Merge remote-tracking branch 'qatar/master'

* qatar/master:
  adpcmenc: cosmetics: pretty-printing
  ac3dec: cosmetics: pretty-printing
  yuv4mpeg: cosmetics: pretty-printing
  shorten: remove dead initialization
  roqvideodec: set AVFrame reference before reget_buffer.
  bmp: fix some 1bit samples.
  latmdec: add fate test for audio config change
  oma: PCM support
  oma: better format detection with small probe buffer
  oma: clearify ambiguous if condition
  wavpack: Properly clip samples during lossy decode
  Code clean-up for crc.c, lfg.c, log.c, random_see.d, rational.c and tree.c.
  Cleaned pixdesc.c file in libavutil
  zmbv.c: coding style clean-up.
  xan.c: coding style clean-up.
  mpegvideo.c: code cleanup - first 500 lines.

Conflicts:
	Changelog
	libavcodec/adpcmenc.c
	libavcodec/bmp.c
	libavcodec/zmbv.c
	libavutil/log.c
	libavutil/pixdesc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

8 files changed, 849 insertions, 715 deletions

diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index c650881430..5e8b36404b 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -44,7 +44,6 @@
  */
 static uint8_t ungroup_3_in_7_bits_tab[128][3];
 
-
 /** tables for ungrouping mantissas */
 static int b1_mantissas[32][3];
 static int b2_mantissas[128][3];
@@ -124,7 +123,7 @@ static av_cold void ac3_tables_init(void)
 
     /* generate table for ungrouping 3 values in 7 bits
        reference: Section 7.1.3 Exponent Decoding */
-    for(i=0; i<128; i++) {
+    for (i = 0; i < 128; i++) {
         ungroup_3_in_7_bits_tab[i][0] =  i / 25;
         ungroup_3_in_7_bits_tab[i][1] = (i % 25) / 5;
         ungroup_3_in_7_bits_tab[i][2] = (i % 25) % 5;
@@ -132,13 +131,13 @@ static av_cold void ac3_tables_init(void)
 
     /* generate grouped mantissa tables
        reference: Section 7.3.5 Ungrouping of Mantissas */
-    for(i=0; i<32; i++) {
+    for (i = 0; i < 32; i++) {
         /* bap=1 mantissas */
         b1_mantissas[i][0] = symmetric_dequant(ff_ac3_ungroup_3_in_5_bits_tab[i][0], 3);
         b1_mantissas[i][1] = symmetric_dequant(ff_ac3_ungroup_3_in_5_bits_tab[i][1], 3);
         b1_mantissas[i][2] = symmetric_dequant(ff_ac3_ungroup_3_in_5_bits_tab[i][2], 3);
     }
-    for(i=0; i<128; i++) {
+    for (i = 0; i < 128; i++) {
         /* bap=2 mantissas */
         b2_mantissas[i][0] = symmetric_dequant(ungroup_3_in_7_bits_tab[i][0], 5);
         b2_mantissas[i][1] = symmetric_dequant(ungroup_3_in_7_bits_tab[i][1], 5);
@@ -150,24 +149,23 @@ static av_cold void ac3_tables_init(void)
     }
     /* generate ungrouped mantissa tables
        reference: Tables 7.21 and 7.23 */
-    for(i=0; i<7; i++) {
+    for (i = 0; i < 7; i++) {
         /* bap=3 mantissas */
         b3_mantissas[i] = symmetric_dequant(i, 7);
     }
-    for(i=0; i<15; i++) {
+    for (i = 0; i < 15; i++) {
         /* bap=5 mantissas */
         b5_mantissas[i] = symmetric_dequant(i, 15);
     }
 
     /* generate dynamic range table
        reference: Section 7.7.1 Dynamic Range Control */
-    for(i=0; i<256; i++) {
+    for (i = 0; i < 256; i++) {
         int v = (i >> 5) - ((i >> 7) << 3) - 5;
         dynamic_range_tab[i] = powf(2.0f, v) * ((i & 0x1F) | 0x20);
     }
 }
 
-
 /**
  * AVCodec initialization
  */
@@ -250,7 +248,7 @@ static int ac3_parse_header(AC3DecodeContext *s)
         i = get_bits(gbc, 6);
         do {
             skip_bits(gbc, 8);
-        } while(i--);
+        } while (i--);
     }
 
     return 0;
@@ -265,7 +263,7 @@ static int parse_frame_header(AC3DecodeContext *s)
     int err;
 
     err = avpriv_ac3_parse_header(&s->gbc, &hdr);
-    if(err)
+    if (err)
         return err;
 
     /* get decoding parameters from header info */
@@ -287,9 +285,9 @@ static int parse_frame_header(AC3DecodeContext *s)
     s->frame_type                   = hdr.frame_type;
     s->substreamid                  = hdr.substreamid;
 
-    if(s->lfe_on) {
-        s->start_freq[s->lfe_ch] = 0;
-        s->end_freq[s->lfe_ch] = 7;
+    if (s->lfe_on) {
+        s->start_freq[s->lfe_ch]     = 0;
+        s->end_freq[s->lfe_ch]       = 7;
         s->num_exp_groups[s->lfe_ch] = 2;
         s->channel_in_cpl[s->lfe_ch] = 0;
     }
@@ -326,38 +324,39 @@ static void set_downmix_coeffs(AC3DecodeContext *s)
     float smix = gain_levels[surround_levels[s->surround_mix_level]];
     float norm0, norm1;
 
-    for(i=0; i<s->fbw_channels; i++) {
+    for (i = 0; i < s->fbw_channels; i++) {
         s->downmix_coeffs[i][0] = gain_levels[ac3_default_coeffs[s->channel_mode][i][0]];
         s->downmix_coeffs[i][1] = gain_levels[ac3_default_coeffs[s->channel_mode][i][1]];
     }
-    if(s->channel_mode > 1 && s->channel_mode & 1) {
+    if (s->channel_mode > 1 && s->channel_mode & 1) {
         s->downmix_coeffs[1][0] = s->downmix_coeffs[1][1] = cmix;
     }
-    if(s->channel_mode == AC3_CHMODE_2F1R || s->channel_mode == AC3_CHMODE_3F1R) {
+    if (s->channel_mode == AC3_CHMODE_2F1R || s->channel_mode == AC3_CHMODE_3F1R) {
         int nf = s->channel_mode - 2;
         s->downmix_coeffs[nf][0] = s->downmix_coeffs[nf][1] = smix * LEVEL_MINUS_3DB;
     }
-    if(s->channel_mode == AC3_CHMODE_2F2R || s->channel_mode == AC3_CHMODE_3F2R) {
+    if (s->channel_mode == AC3_CHMODE_2F2R || s->channel_mode == AC3_CHMODE_3F2R) {
         int nf = s->channel_mode - 4;
         s->downmix_coeffs[nf][0] = s->downmix_coeffs[nf+1][1] = smix;
     }
 
     /* renormalize */
     norm0 = norm1 = 0.0;
-    for(i=0; i<s->fbw_channels; i++) {
+    for (i = 0; i < s->fbw_channels; i++) {
         norm0 += s->downmix_coeffs[i][0];
         norm1 += s->downmix_coeffs[i][1];
     }
     norm0 = 1.0f / norm0;
     norm1 = 1.0f / norm1;
-    for(i=0; i<s->fbw_channels; i++) {
+    for (i = 0; i < s->fbw_channels; i++) {
         s->downmix_coeffs[i][0] *= norm0;
         s->downmix_coeffs[i][1] *= norm1;
     }
 
-    if(s->output_mode == AC3_CHMODE_MONO) {
-        for(i=0; i<s->fbw_channels; i++)
-            s->downmix_coeffs[i][0] = (s->downmix_coeffs[i][0] + s->downmix_coeffs[i][1]) * LEVEL_MINUS_3DB;
+    if (s->output_mode == AC3_CHMODE_MONO) {
+        for (i = 0; i < s->fbw_channels; i++)
+            s->downmix_coeffs[i][0] = (s->downmix_coeffs[i][0] +
+                                       s->downmix_coeffs[i][1]) * LEVEL_MINUS_3DB;
     }
 }
 
@@ -374,7 +373,7 @@ static int decode_exponents(GetBitContext *gbc, int exp_strategy, int ngrps,
 
     /* unpack groups */
     group_size = exp_strategy + (exp_strategy == EXP_D45);
-    for(grp=0,i=0; grp<ngrps; grp++) {
+    for (grp = 0, i = 0; grp < ngrps; grp++) {
         expacc = get_bits(gbc, 7);
         dexp[i++] = ungroup_3_in_7_bits_tab[expacc][0];
         dexp[i++] = ungroup_3_in_7_bits_tab[expacc][1];
@@ -383,15 +382,15 @@ static int decode_exponents(GetBitContext *gbc, int exp_strategy, int ngrps,
 
     /* convert to absolute exps and expand groups */
     prevexp = absexp;
-    for(i=0,j=0; i<ngrps*3; i++) {
+    for (i = 0, j = 0; i < ngrps * 3; i++) {
         prevexp += dexp[i] - 2;
         if (prevexp > 24U)
             return -1;
         switch (group_size) {
-            case 4: dexps[j++] = prevexp;
-                    dexps[j++] = prevexp;
-            case 2: dexps[j++] = prevexp;
-            case 1: dexps[j++] = prevexp;
+        case 4: dexps[j++] = prevexp;
+                dexps[j++] = prevexp;
+        case 2: dexps[j++] = prevexp;
+        case 1: dexps[j++] = prevexp;
         }
     }
     return 0;
@@ -414,7 +413,8 @@ static void calc_transform_coeffs_cpl(AC3DecodeContext *s)
             if (s->channel_in_cpl[ch]) {
                 int cpl_coord = s->cpl_coords[ch][band] << 5;
                 for (bin = band_start; bin < band_end; bin++) {
-                    s->fixed_coeffs[ch][bin] = MULH(s->fixed_coeffs[CPL_CH][bin] << 4, cpl_coord);
+                    s->fixed_coeffs[ch][bin] =
+                        MULH(s->fixed_coeffs[CPL_CH][bin] << 4, cpl_coord);
                 }
                 if (ch == 2 && s->phase_flags[band]) {
                     for (bin = band_start; bin < band_end; bin++)
@@ -445,73 +445,70 @@ typedef struct {
 static void ac3_decode_transform_coeffs_ch(AC3DecodeContext *s, int ch_index, mant_groups *m)
 {
     int start_freq = s->start_freq[ch_index];
-    int end_freq = s->end_freq[ch_index];
-    uint8_t *baps = s->bap[ch_index];
-    int8_t *exps = s->dexps[ch_index];
-    int *coeffs = s->fixed_coeffs[ch_index];
-    int dither = (ch_index == CPL_CH) || s->dither_flag[ch_index];
+    int end_freq   = s->end_freq[ch_index];
+    uint8_t *baps  = s->bap[ch_index];
+    int8_t *exps   = s->dexps[ch_index];
+    int *coeffs    = s->fixed_coeffs[ch_index];
+    int dither     = (ch_index == CPL_CH) || s->dither_flag[ch_index];
     GetBitContext *gbc = &s->gbc;
     int freq;
 
-    for(freq = start_freq; freq < end_freq; freq++){
+    for (freq = start_freq; freq < end_freq; freq++) {
         int bap = baps[freq];
         int mantissa;
-        switch(bap){
-            case 0:
-                if (dither)
-                    mantissa = (av_lfg_get(&s->dith_state) & 0x7FFFFF) - 0x400000;
-                else
-                    mantissa = 0;
-                break;
-            case 1:
-                if(m->b1){
-                    m->b1--;
-                    mantissa = m->b1_mant[m->b1];
-                }
-                else{
-                    int bits      = get_bits(gbc, 5);
-                    mantissa      = b1_mantissas[bits][0];
-                    m->b1_mant[1] = b1_mantissas[bits][1];
-                    m->b1_mant[0] = b1_mantissas[bits][2];
-                    m->b1         = 2;
-                }
-                break;
-            case 2:
-                if(m->b2){
-                    m->b2--;
-                    mantissa = m->b2_mant[m->b2];
-                }
-                else{
-                    int bits      = get_bits(gbc, 7);
-                    mantissa      = b2_mantissas[bits][0];
-                    m->b2_mant[1] = b2_mantissas[bits][1];
-                    m->b2_mant[0] = b2_mantissas[bits][2];
-                    m->b2         = 2;
-                }
-                break;
-            case 3:
-                mantissa = b3_mantissas[get_bits(gbc, 3)];
-                break;
-            case 4:
-                if(m->b4){
-                    m->b4 = 0;
-                    mantissa = m->b4_mant;
-                }
-                else{
-                    int bits   = get_bits(gbc, 7);
-                    mantissa   = b4_mantissas[bits][0];
-                    m->b4_mant = b4_mantissas[bits][1];
-                    m->b4      = 1;
-                }
-                break;
-            case 5:
-                mantissa = b5_mantissas[get_bits(gbc, 4)];
-                break;
-            default: /* 6 to 15 */
-                /* Shift mantissa and sign-extend it. */
-                mantissa = get_sbits(gbc, quantization_tab[bap]);
-                mantissa <<= 24 - quantization_tab[bap];
-                break;
+        switch (bap) {
+        case 0:
+            if (dither)
+                mantissa = (av_lfg_get(&s->dith_state) & 0x7FFFFF) - 0x400000;
+            else
+                mantissa = 0;
+            break;
+        case 1:
+            if (m->b1) {
+                m->b1--;
+                mantissa = m->b1_mant[m->b1];
+            } else {
+                int bits      = get_bits(gbc, 5);
+                mantissa      = b1_mantissas[bits][0];
+                m->b1_mant[1] = b1_mantissas[bits][1];
+                m->b1_mant[0] = b1_mantissas[bits][2];
+                m->b1         = 2;
+            }
+            break;
+        case 2:
+            if (m->b2) {
+                m->b2--;
+                mantissa = m->b2_mant[m->b2];
+            } else {
+                int bits      = get_bits(gbc, 7);
+                mantissa      = b2_mantissas[bits][0];
+                m->b2_mant[1] = b2_mantissas[bits][1];
+                m->b2_mant[0] = b2_mantissas[bits][2];
+                m->b2         = 2;
+            }
+            break;
+        case 3:
+            mantissa = b3_mantissas[get_bits(gbc, 3)];
+            break;
+        case 4:
+            if (m->b4) {
+                m->b4 = 0;
+                mantissa = m->b4_mant;
+            } else {
+                int bits   = get_bits(gbc, 7);
+                mantissa   = b4_mantissas[bits][0];
+                m->b4_mant = b4_mantissas[bits][1];
+                m->b4      = 1;
+            }
+            break;
+        case 5:
+            mantissa = b5_mantissas[get_bits(gbc, 4)];
+            break;
+        default: /* 6 to 15 */
+            /* Shift mantissa and sign-extend it. */
+            mantissa = get_sbits(gbc, quantization_tab[bap]);
+            mantissa <<= 24 - quantization_tab[bap];
+            break;
         }
         coeffs[freq] = mantissa >> exps[freq];
     }
@@ -525,10 +522,10 @@ static void ac3_decode_transform_coeffs_ch(AC3DecodeContext *s, int ch_index, ma
 static void remove_dithering(AC3DecodeContext *s) {
     int ch, i;
 
-    for(ch=1; ch<=s->fbw_channels; ch++) {
-        if(!s->dither_flag[ch] && s->channel_in_cpl[ch]) {
-            for(i = s->start_freq[CPL_CH]; i<s->end_freq[CPL_CH]; i++) {
-                if(!s->bap[CPL_CH][i])
+    for (ch = 1; ch <= s->fbw_channels; ch++) {
+        if (!s->dither_flag[ch] && s->channel_in_cpl[ch]) {
+            for (i = s->start_freq[CPL_CH]; i < s->end_freq[CPL_CH]; i++) {
+                if (!s->bap[CPL_CH][i])
                     s->fixed_coeffs[ch][i] = 0;
             }
         }
@@ -536,7 +533,7 @@ static void remove_dithering(AC3DecodeContext *s) {
 }
 
 static void decode_transform_coeffs_ch(AC3DecodeContext *s, int blk, int ch,
-                                    mant_groups *m)
+                                       mant_groups *m)
 {
     if (!s->channel_uses_aht[ch]) {
         ac3_decode_transform_coeffs_ch(s, ch, m);
@@ -580,7 +577,7 @@ static void decode_transform_coeffs(AC3DecodeContext *s, int blk)
         }
         do
             s->fixed_coeffs[ch][end] = 0;
-        while(++end < 256);
+        while (++end < 256);
     }
 
     /* zero the dithered coefficients for appropriate channels */
@@ -598,10 +595,10 @@ static void do_rematrixing(AC3DecodeContext *s)
 
     end = FFMIN(s->end_freq[1], s->end_freq[2]);
 
-    for(bnd=0; bnd<s->num_rematrixing_bands; bnd++) {
-        if(s->rematrixing_flags[bnd]) {
-            bndend = FFMIN(end, ff_ac3_rematrix_band_tab[bnd+1]);
-            for(i=ff_ac3_rematrix_band_tab[bnd]; i<bndend; i++) {
+    for (bnd = 0; bnd < s->num_rematrixing_bands; bnd++) {
+        if (s->rematrixing_flags[bnd]) {
+            bndend = FFMIN(end, ff_ac3_rematrix_band_tab[bnd + 1]);
+            for (i = ff_ac3_rematrix_band_tab[bnd]; i < bndend; i++) {
                 int tmp0 = s->fixed_coeffs[1][i];
                 s->fixed_coeffs[1][i] += s->fixed_coeffs[2][i];
                 s->fixed_coeffs[2][i]  = tmp0 - s->fixed_coeffs[2][i];
@@ -619,21 +616,23 @@ static inline void do_imdct(AC3DecodeContext *s, int channels)
 {
     int ch;
 
-    for (ch=1; ch<=channels; ch++) {
+    for (ch = 1; ch <= channels; ch++) {
         if (s->block_switch[ch]) {
             int i;
-            float *x = s->tmp_output+128;
-            for(i=0; i<128; i++)
-                x[i] = s->transform_coeffs[ch][2*i];
+            float *x = s->tmp_output + 128;
+            for (i = 0; i < 128; i++)
+                x[i] = s->transform_coeffs[ch][2 * i];
             s->imdct_256.imdct_half(&s->imdct_256, s->tmp_output, x);
-            s->dsp.vector_fmul_window(s->output[ch-1], s->delay[ch-1], s->tmp_output, s->window, 128);
-            for(i=0; i<128; i++)
-                x[i] = s->transform_coeffs[ch][2*i+1];
-            s->imdct_256.imdct_half(&s->imdct_256, s->delay[ch-1], x);
+            s->dsp.vector_fmul_window(s->output[ch - 1], s->delay[ch - 1],
+                                      s->tmp_output, s->window, 128);
+            for (i = 0; i < 128; i++)
+                x[i] = s->transform_coeffs[ch][2 * i + 1];
+            s->imdct_256.imdct_half(&s->imdct_256, s->delay[ch - 1], x);
         } else {
             s->imdct_512.imdct_half(&s->imdct_512, s->tmp_output, s->transform_coeffs[ch]);
-            s->dsp.vector_fmul_window(s->output[ch-1], s->delay[ch-1], s->tmp_output, s->window, 128);
-            memcpy(s->delay[ch-1], s->tmp_output+128, 128*sizeof(float));
+            s->dsp.vector_fmul_window(s->output[ch - 1], s->delay[ch - 1],
+                                      s->tmp_output, s->window, 128);
+            memcpy(s->delay[ch - 1], s->tmp_output + 128, 128 * sizeof(float));
         }
     }
 }
@@ -641,24 +640,25 @@ static inline void do_imdct(AC3DecodeContext *s, int channels)
 /**
  * Downmix the output to mono or stereo.
  */
-void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len)
+void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
+                      int out_ch, int in_ch, int len)
 {
     int i, j;
     float v0, v1;
-    if(out_ch == 2) {
-        for(i=0; i<len; i++) {
+    if (out_ch == 2) {
+        for (i = 0; i < len; i++) {
             v0 = v1 = 0.0f;
-            for(j=0; j<in_ch; j++) {
+            for (j = 0; j < in_ch; j++) {
                 v0 += samples[j][i] * matrix[j][0];
                 v1 += samples[j][i] * matrix[j][1];
             }
             samples[0][i] = v0;
             samples[1][i] = v1;
         }
-    } else if(out_ch == 1) {
-        for(i=0; i<len; i++) {
+    } else if (out_ch == 1) {
+        for (i = 0; i < len; i++) {
             v0 = 0.0f;
-            for(j=0; j<in_ch; j++)
+            for (j = 0; j < in_ch; j++)
                 v0 += samples[j][i] * matrix[j][0];
             samples[0][i] = v0;
         }
@@ -671,25 +671,25 @@ void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2], int out_ch, int
 static void ac3_upmix_delay(AC3DecodeContext *s)
 {
     int channel_data_size = sizeof(s->delay[0]);
-    switch(s->channel_mode) {
-        case AC3_CHMODE_DUALMONO:
-        case AC3_CHMODE_STEREO:
-            /* upmix mono to stereo */
-            memcpy(s->delay[1], s->delay[0], channel_data_size);
-            break;
-        case AC3_CHMODE_2F2R:
-            memset(s->delay[3], 0, channel_data_size);
-        case AC3_CHMODE_2F1R:
-            memset(s->delay[2], 0, channel_data_size);
-            break;
-        case AC3_CHMODE_3F2R:
-            memset(s->delay[4], 0, channel_data_size);
-        case AC3_CHMODE_3F1R:
-            memset(s->delay[3], 0, channel_data_size);
-        case AC3_CHMODE_3F:
-            memcpy(s->delay[2], s->delay[1], channel_data_size);
-            memset(s->delay[1], 0, channel_data_size);
-            break;
+    switch (s->channel_mode) {
+    case AC3_CHMODE_DUALMONO:
+    case AC3_CHMODE_STEREO:
+        /* upmix mono to stereo */
+        memcpy(s->delay[1], s->delay[0], channel_data_size);
+        break;
+    case AC3_CHMODE_2F2R:
+        memset(s->delay[3], 0, channel_data_size);
+    case AC3_CHMODE_2F1R:
+        memset(s->delay[2], 0, channel_data_size);
+        break;
+    case AC3_CHMODE_3F2R:
+        memset(s->delay[4], 0, channel_data_size);
+    case AC3_CHMODE_3F1R:
+        memset(s->delay[3], 0, channel_data_size);
+    case AC3_CHMODE_3F:
+        memcpy(s->delay[2], s->delay[1], channel_data_size);
+        memset(s->delay[1], 0, channel_data_size);
+        break;
     }
 }
 
@@ -742,7 +742,7 @@ static void decode_band_structure(GetBitContext *gbc, int blk, int eac3,
         bnd_sz[0] = ecpl ? 6 : 12;
         for (bnd = 0, subbnd = 1; subbnd < n_subbands; subbnd++) {
             int subbnd_size = (ecpl && subbnd < 4) ? 6 : 12;
-            if (band_struct[subbnd-1]) {
+            if (band_struct[subbnd - 1]) {
                 n_bands--;
                 bnd_sz[bnd] += subbnd_size;
             } else {
@@ -779,7 +779,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     if (s->block_switch_syntax) {
         for (ch = 1; ch <= fbw_channels; ch++) {
             s->block_switch[ch] = get_bits1(gbc);
-            if(ch > 1 && s->block_switch[ch] != s->block_switch[1])
+            if (ch > 1 && s->block_switch[ch] != s->block_switch[1])
                 different_transforms = 1;
         }
     }
@@ -794,13 +794,13 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     /* dynamic range */
     i = !(s->channel_mode);
     do {
-        if(get_bits1(gbc)) {
-            s->dynamic_range[i] = ((dynamic_range_tab[get_bits(gbc, 8)]-1.0) *
-                                  s->drc_scale)+1.0;
-        } else if(blk == 0) {
+        if (get_bits1(gbc)) {
+            s->dynamic_range[i] = ((dynamic_range_tab[get_bits(gbc, 8)] - 1.0) *
+                                  s->drc_scale) + 1.0;
+        } else if (blk == 0) {
             s->dynamic_range[i] = 1.0f;
         }
-    } while(i--);
+    } while (i--);
 
     /* spectral extension strategy */
     if (s->eac3 && (!blk || get_bits1(gbc))) {
@@ -881,7 +881,8 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                         bandsize = s->spx_band_sizes[bnd];
                         nratio = ((float)((bin + (bandsize >> 1))) / s->spx_dst_end_freq) - spx_blend;
                         nratio = av_clipf(nratio, 0.0f, 1.0f);
-                        nblend = sqrtf(3.0f * nratio); // noise is scaled by sqrt(3) to give unity variance
+                        nblend = sqrtf(3.0f * nratio); // noise is scaled by sqrt(3)
+                                                       // to give unity variance
                         sblend = sqrtf(1.0f - nratio);
                         bin += bandsize;
 
@@ -891,7 +892,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                         if (spx_coord_exp == 15) spx_coord_mant <<= 1;
                         else                     spx_coord_mant += 4;
                         spx_coord_mant <<= (25 - spx_coord_exp - master_spx_coord);
-                        spx_coord = spx_coord_mant * (1.0f/(1<<23));
+                        spx_coord = spx_coord_mant * (1.0f / (1 << 23));
 
                         /* multiply noise and signal blending factors by spx coordinate */
                         s->spx_noise_blend [ch][bnd] = nblend * spx_coord;
@@ -964,8 +965,9 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             s->phase_flags_in_use = 0;
         }
     } else if (!s->eac3) {
-        if(!blk) {
-            av_log(s->avctx, AV_LOG_ERROR, "new coupling strategy must be present in block 0\n");
+        if (!blk) {
+            av_log(s->avctx, AV_LOG_ERROR, "new coupling strategy must "
+                   "be present in block 0\n");
             return -1;
         } else {
             s->cpl_in_use[blk] = s->cpl_in_use[blk-1];
@@ -994,7 +996,8 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                         s->cpl_coords[ch][bnd] >>= (cpl_coord_exp + master_cpl_coord);
                     }
                 } else if (!blk) {
-                    av_log(s->avctx, AV_LOG_ERROR, "new coupling coordinates must be present in block 0\n");
+                    av_log(s->avctx, AV_LOG_ERROR, "new coupling coordinates must "
+                           "be present in block 0\n");
                     return -1;
                 }
             } else {
@@ -1019,10 +1022,11 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             } else if (s->spx_in_use && s->spx_src_start_freq <= 61) {
                 s->num_rematrixing_bands--;
             }
-            for(bnd=0; bnd<s->num_rematrixing_bands; bnd++)
+            for (bnd = 0; bnd < s->num_rematrixing_bands; bnd++)
                 s->rematrixing_flags[bnd] = get_bits1(gbc);
         } else if (!blk) {
-            av_log(s->avctx, AV_LOG_WARNING, "Warning: new rematrixing strategy not present in block 0\n");
+            av_log(s->avctx, AV_LOG_WARNING, "Warning: "
+                   "new rematrixing strategy not present in block 0\n");
             s->num_rematrixing_bands = 0;
         }
     }
@@ -1031,7 +1035,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     for (ch = !cpl_in_use; ch <= s->channels; ch++) {
         if (!s->eac3)
             s->exp_strategy[blk][ch] = get_bits(gbc, 2 - (ch == s->lfe_ch));
-        if(s->exp_strategy[blk][ch] != EXP_REUSE)
+        if (s->exp_strategy[blk][ch] != EXP_REUSE)
             bit_alloc_stages[ch] = 3;
     }
 
@@ -1054,8 +1058,8 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                 s->end_freq[ch] = bandwidth_code * 3 + 73;
             }
             group_size = 3 << (s->exp_strategy[blk][ch] - 1);
-            s->num_exp_groups[ch] = (s->end_freq[ch]+group_size-4) / group_size;
-            if(blk > 0 && s->end_freq[ch] != prev)
+            s->num_exp_groups[ch] = (s->end_freq[ch] + group_size-4) / group_size;
+            if (blk > 0 && s->end_freq[ch] != prev)
                 memset(bit_alloc_stages, 3, AC3_MAX_CHANNELS);
         }
     }
@@ -1074,7 +1078,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                 av_log(s->avctx, AV_LOG_ERROR, "exponent out-of-range\n");
                 return -1;
             }
-            if(ch != CPL_CH && ch != s->lfe_ch)
+            if (ch != CPL_CH && ch != s->lfe_ch)
                 skip_bits(gbc, 2); /* skip gainrng */
         }
     }
@@ -1087,17 +1091,18 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             s->bit_alloc_params.slow_gain  = ff_ac3_slow_gain_tab[get_bits(gbc, 2)];
             s->bit_alloc_params.db_per_bit = ff_ac3_db_per_bit_tab[get_bits(gbc, 2)];
             s->bit_alloc_params.floor  = ff_ac3_floor_tab[get_bits(gbc, 3)];
-            for(ch=!cpl_in_use; ch<=s->channels; ch++)
+            for (ch = !cpl_in_use; ch <= s->channels; ch++)
                 bit_alloc_stages[ch] = FFMAX(bit_alloc_stages[ch], 2);
         } else if (!blk) {
-            av_log(s->avctx, AV_LOG_ERROR, "new bit allocation info must be present in block 0\n");
+            av_log(s->avctx, AV_LOG_ERROR, "new bit allocation info must "
+                   "be present in block 0\n");
             return -1;
         }
     }
 
     /* signal-to-noise ratio offsets and fast gains (signal-to-mask ratios) */
-    if(!s->eac3 || !blk){
-        if(s->snr_offset_strategy && get_bits1(gbc)) {
+    if (!s->eac3 || !blk) {
+        if (s->snr_offset_strategy && get_bits1(gbc)) {
             int snr = 0;
             int csnr;
             csnr = (get_bits(gbc, 6) - 15) << 4;
@@ -1106,7 +1111,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                 if (ch == i || s->snr_offset_strategy == 2)
                     snr = (csnr + get_bits(gbc, 4)) << 2;
                 /* run at least last bit allocation stage if snr offset changes */
-                if(blk && s->snr_offset[ch] != snr) {
+                if (blk && s->snr_offset[ch] != snr) {
                     bit_alloc_stages[ch] = FFMAX(bit_alloc_stages[ch], 1);
                 }
                 s->snr_offset[ch] = snr;
@@ -1116,7 +1121,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                     int prev = s->fast_gain[ch];
                     s->fast_gain[ch] = ff_ac3_fast_gain_tab[get_bits(gbc, 3)];
                     /* run last 2 bit allocation stages if fast gain changes */
-                    if(blk && prev != s->fast_gain[ch])
+                    if (blk && prev != s->fast_gain[ch])
                         bit_alloc_stages[ch] = FFMAX(bit_alloc_stages[ch], 2);
                 }
             }
@@ -1132,7 +1137,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             int prev = s->fast_gain[ch];
             s->fast_gain[ch] = ff_ac3_fast_gain_tab[get_bits(gbc, 3)];
             /* run last 2 bit allocation stages if fast gain changes */
-            if(blk && prev != s->fast_gain[ch])
+            if (blk && prev != s->fast_gain[ch])
                 bit_alloc_stages[ch] = FFMAX(bit_alloc_stages[ch], 2);
         }
     } else if (s->eac3 && !blk) {
@@ -1152,14 +1157,15 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             int sl = get_bits(gbc, 3);
             /* run last 2 bit allocation stages for coupling channel if
                coupling leak changes */
-            if(blk && (fl != s->bit_alloc_params.cpl_fast_leak ||
-                       sl != s->bit_alloc_params.cpl_slow_leak)) {
+            if (blk && (fl != s->bit_alloc_params.cpl_fast_leak ||
+                sl != s->bit_alloc_params.cpl_slow_leak)) {
                 bit_alloc_stages[CPL_CH] = FFMAX(bit_alloc_stages[CPL_CH], 2);
             }
             s->bit_alloc_params.cpl_fast_leak = fl;
             s->bit_alloc_params.cpl_slow_leak = sl;
         } else if (!s->eac3 && !blk) {
-            av_log(s->avctx, AV_LOG_ERROR, "new coupling leak info must be present in block 0\n");
+            av_log(s->avctx, AV_LOG_ERROR, "new coupling leak info must "
+                   "be present in block 0\n");
             return -1;
         }
         s->first_cpl_leak = 0;
@@ -1183,40 +1189,40 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
                 for (seg = 0; seg < s->dba_nsegs[ch]; seg++) {
                     s->dba_offsets[ch][seg] = get_bits(gbc, 5);
                     s->dba_lengths[ch][seg] = get_bits(gbc, 4);
-                    s->dba_values[ch][seg] = get_bits(gbc, 3);
+                    s->dba_values[ch][seg]  = get_bits(gbc, 3);
                 }
                 /* run last 2 bit allocation stages if new dba values */
                 bit_alloc_stages[ch] = FFMAX(bit_alloc_stages[ch], 2);
             }
         }
-    } else if(blk == 0) {
-        for(ch=0; ch<=s->channels; ch++) {
+    } else if (blk == 0) {
+        for (ch = 0; ch <= s->channels; ch++) {
             s->dba_mode[ch] = DBA_NONE;
         }
     }
 
     /* Bit allocation */
-    for(ch=!cpl_in_use; ch<=s->channels; ch++) {
-        if(bit_alloc_stages[ch] > 2) {
+    for (ch = !cpl_in_use; ch <= s->channels; ch++) {
+        if (bit_alloc_stages[ch] > 2) {
             /* Exponent mapping into PSD and PSD integration */
             ff_ac3_bit_alloc_calc_psd(s->dexps[ch],
                                       s->start_freq[ch], s->end_freq[ch],
                                       s->psd[ch], s->band_psd[ch]);
         }
-        if(bit_alloc_stages[ch] > 1) {
+        if (bit_alloc_stages[ch] > 1) {
             /* Compute excitation function, Compute masking curve, and
                Apply delta bit allocation */
             if (ff_ac3_bit_alloc_calc_mask(&s->bit_alloc_params, s->band_psd[ch],
-                                           s->start_freq[ch], s->end_freq[ch],
-                                           s->fast_gain[ch], (ch == s->lfe_ch),
-                                           s->dba_mode[ch], s->dba_nsegs[ch],
+                                           s->start_freq[ch],  s->end_freq[ch],
+                                           s->fast_gain[ch],   (ch == s->lfe_ch),
+                                           s->dba_mode[ch],    s->dba_nsegs[ch],
                                            s->dba_offsets[ch], s->dba_lengths[ch],
-                                           s->dba_values[ch], s->mask[ch])) {
+                                           s->dba_values[ch],  s->mask[ch])) {
                 av_log(s->avctx, AV_LOG_ERROR, "error in bit allocation\n");
                 return -1;
             }
         }
-        if(bit_alloc_stages[ch] > 0) {
+        if (bit_alloc_stages[ch] > 0) {
             /* Compute bit allocation */
             const uint8_t *bap_tab = s->channel_uses_aht[ch] ?
                                      ff_eac3_hebap_tab : ff_ac3_bap_tab;
@@ -1231,7 +1237,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     /* unused dummy data */
     if (s->skip_syntax && get_bits1(gbc)) {
         int skipl = get_bits(gbc, 9);
-        while(skipl--)
+        while (skipl--)
             skip_bits(gbc, 8);
     }
 
@@ -1242,18 +1248,19 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     /* TODO: generate enhanced coupling coordinates and uncouple */
 
     /* recover coefficients if rematrixing is in use */
-    if(s->channel_mode == AC3_CHMODE_STEREO)
+    if (s->channel_mode == AC3_CHMODE_STEREO)
         do_rematrixing(s);
 
     /* apply scaling to coefficients (headroom, dynrng) */
-    for(ch=1; ch<=s->channels; ch++) {
+    for (ch = 1; ch <= s->channels; ch++) {
         float gain = s->mul_bias / 4194304.0f;
-        if(s->channel_mode == AC3_CHMODE_DUALMONO) {
-            gain *= s->dynamic_range[2-ch];
+        if (s->channel_mode == AC3_CHMODE_DUALMONO) {
+            gain *= s->dynamic_range[2 - ch];
         } else {
             gain *= s->dynamic_range[0];
         }
-        s->fmt_conv.int32_to_float_fmul_scalar(s->transform_coeffs[ch], s->fixed_coeffs[ch], gain, 256);
+        s->fmt_conv.int32_to_float_fmul_scalar(s->transform_coeffs[ch],
+                                               s->fixed_coeffs[ch], gain, 256);
     }
 
     /* apply spectral extension to high frequency bins */
@@ -1267,27 +1274,30 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
     downmix_output = s->channels != s->out_channels &&
                      !((s->output_mode & AC3_OUTPUT_LFEON) &&
                      s->fbw_channels == s->out_channels);
-    if(different_transforms) {
+    if (different_transforms) {
         /* the delay samples have already been downmixed, so we upmix the delay
            samples in order to reconstruct all channels before downmixing. */
-        if(s->downmixed) {
+        if (s->downmixed) {
             s->downmixed = 0;
             ac3_upmix_delay(s);
         }
 
         do_imdct(s, s->channels);
 
-        if(downmix_output) {
-            s->dsp.ac3_downmix(s->output, s->downmix_coeffs, s->out_channels, s->fbw_channels, 256);
+        if (downmix_output) {
+            s->dsp.ac3_downmix(s->output, s->downmix_coeffs,
+                               s->out_channels, s->fbw_channels, 256);
         }
     } else {
-        if(downmix_output) {
-            s->dsp.ac3_downmix(s->transform_coeffs+1, s->downmix_coeffs, s->out_channels, s->fbw_channels, 256);
+        if (downmix_output) {
+            s->dsp.ac3_downmix(s->transform_coeffs + 1, s->downmix_coeffs,
+                               s->out_channels, s->fbw_channels, 256);
         }
 
-        if(downmix_output && !s->downmixed) {
+        if (downmix_output && !s->downmixed) {
             s->downmixed = 1;
-            s->dsp.ac3_downmix(s->delay, s->downmix_coeffs, s->out_channels, s->fbw_channels, 128);
+            s->dsp.ac3_downmix(s->delay, s->downmix_coeffs, s->out_channels,
+                               s->fbw_channels, 128);
         }
 
         do_imdct(s, s->out_channels);
@@ -1327,33 +1337,34 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
     err = parse_frame_header(s);
 
     if (err) {
-        switch(err) {
-            case AAC_AC3_PARSE_ERROR_SYNC:
-                av_log(avctx, AV_LOG_ERROR, "frame sync error\n");
-                return -1;
-            case AAC_AC3_PARSE_ERROR_BSID:
-                av_log(avctx, AV_LOG_ERROR, "invalid bitstream id\n");
-                break;
-            case AAC_AC3_PARSE_ERROR_SAMPLE_RATE:
-                av_log(avctx, AV_LOG_ERROR, "invalid sample rate\n");
-                break;
-            case AAC_AC3_PARSE_ERROR_FRAME_SIZE:
-                av_log(avctx, AV_LOG_ERROR, "invalid frame size\n");
-                break;
-            case AAC_AC3_PARSE_ERROR_FRAME_TYPE:
-                /* skip frame if CRC is ok. otherwise use error concealment. */
-                /* TODO: add support for substreams and dependent frames */
-                if(s->frame_type == EAC3_FRAME_TYPE_DEPENDENT || s->substreamid) {
-                    av_log(avctx, AV_LOG_ERROR, "unsupported frame type : skipping frame\n");
-                    *got_frame_ptr = 0;
-                    return s->frame_size;
-                } else {
-                    av_log(avctx, AV_LOG_ERROR, "invalid frame type\n");
-                }
-                break;
-            default:
-                av_log(avctx, AV_LOG_ERROR, "invalid header\n");
-                break;
+        switch (err) {
+        case AAC_AC3_PARSE_ERROR_SYNC:
+            av_log(avctx, AV_LOG_ERROR, "frame sync error\n");
+            return -1;
+        case AAC_AC3_PARSE_ERROR_BSID:
+            av_log(avctx, AV_LOG_ERROR, "invalid bitstream id\n");
+            break;
+        case AAC_AC3_PARSE_ERROR_SAMPLE_RATE:
+            av_log(avctx, AV_LOG_ERROR, "invalid sample rate\n");
+            break;
+        case AAC_AC3_PARSE_ERROR_FRAME_SIZE:
+            av_log(avctx, AV_LOG_ERROR, "invalid frame size\n");
+            break;
+        case AAC_AC3_PARSE_ERROR_FRAME_TYPE:
+            /* skip frame if CRC is ok. otherwise use error concealment. */
+            /* TODO: add support for substreams and dependent frames */
+            if (s->frame_type == EAC3_FRAME_TYPE_DEPENDENT || s->substreamid) {
+                av_log(avctx, AV_LOG_ERROR, "unsupported frame type : "
+                       "skipping frame\n");
+                *got_frame_ptr = 0;
+                return s->frame_size;
+            } else {
+                av_log(avctx, AV_LOG_ERROR, "invalid frame type\n");
+            }
+            break;
+        default:
+            av_log(avctx, AV_LOG_ERROR, "invalid header\n");
+            break;
         }
     } else {
         /* check that reported frame size fits in input buffer */
@@ -1362,7 +1373,8 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
             err = AAC_AC3_PARSE_ERROR_FRAME_SIZE;
         } else if (avctx->err_recognition & AV_EF_CRCCHECK) {
             /* check for crc mismatch */
-            if (av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, &buf[2], s->frame_size-2)) {
+            if (av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, &buf[2],
+                       s->frame_size - 2)) {
                 av_log(avctx, AV_LOG_ERROR, "frame CRC mismatch\n");
                 err = AAC_AC3_PARSE_ERROR_CRC;
             }
@@ -1372,12 +1384,12 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
     /* if frame is ok, set audio parameters */
     if (!err) {
         avctx->sample_rate = s->sample_rate;
-        avctx->bit_rate = s->bit_rate;
+        avctx->bit_rate    = s->bit_rate;
 
         /* channel config */
         s->out_channels = s->channels;
-        s->output_mode = s->channel_mode;
-        if(s->lfe_on)
+        s->output_mode  = s->channel_mode;
+        if (s->lfe_on)
             s->output_mode |= AC3_OUTPUT_LFEON;
         if (avctx->request_channels > 0 && avctx->request_channels <= 2 &&
                 avctx->request_channels < s->channels) {
@@ -1385,7 +1397,7 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
             s->output_mode  = avctx->request_channels == 1 ? AC3_CHMODE_MONO : AC3_CHMODE_STEREO;
             s->channel_layout = ff_ac3_channel_layout_tab[s->output_mode];
         }
-        avctx->channels = s->out_channels;
+        avctx->channels       = s->out_channels;
         avctx->channel_layout = s->channel_layout;
 
         s->loro_center_mix_level   = gain_levels[  center_levels[s->  center_mix_level]];
@@ -1393,13 +1405,13 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
         s->ltrt_center_mix_level   = LEVEL_MINUS_3DB;
         s->ltrt_surround_mix_level = LEVEL_MINUS_3DB;
         /* set downmixing coefficients if needed */
-        if(s->channels != s->out_channels && !((s->output_mode & AC3_OUTPUT_LFEON) &&
+        if (s->channels != s->out_channels && !((s->output_mode & AC3_OUTPUT_LFEON) &&
                 s->fbw_channels == s->out_channels)) {
             set_downmix_coeffs(s);
         }
     } else if (!s->out_channels) {
         s->out_channels = avctx->channels;
-        if(s->out_channels < s->channels)
+        if (s->out_channels < s->channels)
             s->output_mode  = s->out_channels == 1 ? AC3_CHMODE_MONO : AC3_CHMODE_STEREO;
     }
     /* set audio service type based on bitstream mode for AC-3 */
@@ -1476,19 +1488,19 @@ static const AVClass ac3_decoder_class = {
 };
 
 AVCodec ff_ac3_decoder = {
-    .name = "ac3",
-    .type = AVMEDIA_TYPE_AUDIO,
-    .id = CODEC_ID_AC3,
+    .name           = "ac3",
+    .type           = AVMEDIA_TYPE_AUDIO,
+    .id             = CODEC_ID_AC3,
     .priv_data_size = sizeof (AC3DecodeContext),
-    .init = ac3_decode_init,
-    .close = ac3_decode_end,
-    .decode = ac3_decode_frame,
-    .capabilities = CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
-    .sample_fmts = (const enum AVSampleFormat[]) {
-        AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
-    },
-    .priv_class = &ac3_decoder_class,
+    .init           = ac3_decode_init,
+    .close          = ac3_decode_end,
+    .decode         = ac3_decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
+    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLT,
+                                                      AV_SAMPLE_FMT_S16,
+                                                      AV_SAMPLE_FMT_NONE },
+    .priv_class     = &ac3_decoder_class,
 };
 
 #if CONFIG_EAC3_DECODER
@@ -1498,19 +1510,20 @@ static const AVClass eac3_decoder_class = {
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };
+
 AVCodec ff_eac3_decoder = {
-    .name = "eac3",
-    .type = AVMEDIA_TYPE_AUDIO,
-    .id = CODEC_ID_EAC3,
+    .name           = "eac3",
+    .type           = AVMEDIA_TYPE_AUDIO,
+    .id             = CODEC_ID_EAC3,
     .priv_data_size = sizeof (AC3DecodeContext),
-    .init = ac3_decode_init,
-    .close = ac3_decode_end,
-    .decode = ac3_decode_frame,
-    .capabilities = CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("ATSC A/52B (AC-3, E-AC-3)"),
-    .sample_fmts = (const enum AVSampleFormat[]) {
-        AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
-    },
-    .priv_class = &eac3_decoder_class,
+    .init           = ac3_decode_init,
+    .close          = ac3_decode_end,
+    .decode         = ac3_decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("ATSC A/52B (AC-3, E-AC-3)"),
+    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLT,
+                                                      AV_SAMPLE_FMT_S16,
+                                                      AV_SAMPLE_FMT_NONE },
+    .priv_class     = &eac3_decoder_class,
 };
 #endif
diff --git a/libavcodec/adpcmenc.c b/libavcodec/adpcmenc.c
index c193f5c7ef..e500a1cdbf 100644
--- a/libavcodec/adpcmenc.c
+++ b/libavcodec/adpcmenc.c
@@ -66,37 +66,45 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
     if (avctx->channels > 2)
         return -1; /* only stereo or mono =) */
 
-    if(avctx->trellis && (unsigned)avctx->trellis > 16U){
+    if (avctx->trellis && (unsigned)avctx->trellis > 16U) {
         av_log(avctx, AV_LOG_ERROR, "invalid trellis size\n");
         return -1;
     }
 
     if (avctx->trellis) {
-        int frontier = 1 << avctx->trellis;
+        int frontier  = 1 << avctx->trellis;
         int max_paths =  frontier * FREEZE_INTERVAL;
-        FF_ALLOC_OR_GOTO(avctx, s->paths,     max_paths * sizeof(*s->paths), error);
-        FF_ALLOC_OR_GOTO(avctx, s->node_buf,  2 * frontier * sizeof(*s->node_buf), error);
-        FF_ALLOC_OR_GOTO(avctx, s->nodep_buf, 2 * frontier * sizeof(*s->nodep_buf), error);
-        FF_ALLOC_OR_GOTO(avctx, s->trellis_hash, 65536 * sizeof(*s->trellis_hash), error);
+        FF_ALLOC_OR_GOTO(avctx, s->paths,
+                         max_paths * sizeof(*s->paths), error);
+        FF_ALLOC_OR_GOTO(avctx, s->node_buf,
+                         2 * frontier * sizeof(*s->node_buf),  error);
+        FF_ALLOC_OR_GOTO(avctx, s->nodep_buf,
+                         2 * frontier * sizeof(*s->nodep_buf), error);
+        FF_ALLOC_OR_GOTO(avctx, s->trellis_hash,
+                         65536 * sizeof(*s->trellis_hash), error);
     }
 
     avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id);
 
-    switch(avctx->codec->id) {
+    switch (avctx->codec->id) {
     case CODEC_ID_ADPCM_IMA_WAV:
-        avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 / (4 * avctx->channels) + 1; /* each 16 bits sample gives one nibble */
-                                                             /* and we have 4 bytes per channel overhead */
+        /* each 16 bits sample gives one nibble
+           and we have 4 bytes per channel overhead */
+        avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 /
+                            (4 * avctx->channels) + 1;
+        /* seems frame_size isn't taken into account...
+           have to buffer the samples :-( */
         avctx->block_align = BLKSIZE;
         avctx->bits_per_coded_sample = 4;
-        /* seems frame_size isn't taken into account... have to buffer the samples :-( */
         break;
     case CODEC_ID_ADPCM_IMA_QT:
-        avctx->frame_size = 64;
+        avctx->frame_size  = 64;
         avctx->block_align = 34 * avctx->channels;
         break;
     case CODEC_ID_ADPCM_MS:
-        avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2; /* each 16 bits sample gives one nibble */
-                                                             /* and we have 7 bytes per channel overhead */
+        /* each 16 bits sample gives one nibble
+           and we have 7 bytes per channel overhead */
+        avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2;
         avctx->block_align = BLKSIZE;
         avctx->bits_per_coded_sample = 4;
         avctx->extradata_size = 32;
@@ -111,14 +119,15 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
         }
         break;
     case CODEC_ID_ADPCM_YAMAHA:
-        avctx->frame_size = BLKSIZE * avctx->channels;
+        avctx->frame_size  = BLKSIZE * avctx->channels;
         avctx->block_align = BLKSIZE;
         break;
     case CODEC_ID_ADPCM_SWF:
         if (avctx->sample_rate != 11025 &&
             avctx->sample_rate != 22050 &&
             avctx->sample_rate != 44100) {
-            av_log(avctx, AV_LOG_ERROR, "Sample rate must be 11025, 22050 or 44100\n");
+            av_log(avctx, AV_LOG_ERROR, "Sample rate must be 11025, "
+                   "22050 or 44100\n");
             goto error;
         }
         avctx->frame_size = 512 * (avctx->sample_rate / 11025);
@@ -127,7 +136,7 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
         goto error;
     }
 
-    avctx->coded_frame= avcodec_alloc_frame();
+    avctx->coded_frame = avcodec_alloc_frame();
     avctx->coded_frame->key_frame= 1;
 
     return 0;
@@ -152,19 +161,23 @@ static av_cold int adpcm_encode_close(AVCodecContext *avctx)
 }
 
 
-static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c, short sample)
+static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c,
+                                                      short sample)
 {
-    int delta = sample - c->prev_sample;
-    int nibble = FFMIN(7, abs(delta)*4/ff_adpcm_step_table[c->step_index]) + (delta<0)*8;
-    c->prev_sample += ((ff_adpcm_step_table[c->step_index] * ff_adpcm_yamaha_difflookup[nibble]) / 8);
+    int delta  = sample - c->prev_sample;
+    int nibble = FFMIN(7, abs(delta) * 4 /
+                       ff_adpcm_step_table[c->step_index]) + (delta < 0) * 8;
+    c->prev_sample += ((ff_adpcm_step_table[c->step_index] *
+                        ff_adpcm_yamaha_difflookup[nibble]) / 8);
     c->prev_sample = av_clip_int16(c->prev_sample);
-    c->step_index = av_clip(c->step_index + ff_adpcm_index_table[nibble], 0, 88);
+    c->step_index  = av_clip(c->step_index + ff_adpcm_index_table[nibble], 0, 88);
     return nibble;
 }
 
-static inline unsigned char adpcm_ima_qt_compress_sample(ADPCMChannelStatus *c, short sample)
+static inline unsigned char adpcm_ima_qt_compress_sample(ADPCMChannelStatus *c,
+                                                         short sample)
 {
-    int delta = sample - c->prev_sample;
+    int delta  = sample - c->prev_sample;
     int diff, step = ff_adpcm_step_table[c->step_index];
     int nibble = 8*(delta < 0);
 
@@ -173,17 +186,17 @@ static inline unsigned char adpcm_ima_qt_compress_sample(ADPCMChannelStatus *c,
 
     if (delta >= step) {
         nibble |= 4;
-        delta -= step;
+        delta  -= step;
     }
     step >>= 1;
     if (delta >= step) {
         nibble |= 2;
-        delta -= step;
+        delta  -= step;
     }
     step >>= 1;
     if (delta >= step) {
         nibble |= 1;
-        delta -= step;
+        delta  -= step;
     }
     diff -= delta;
 
@@ -193,47 +206,53 @@ static inline unsigned char adpcm_ima_qt_compress_sample(ADPCMChannelStatus *c,
         c->prev_sample += diff;
 
     c->prev_sample = av_clip_int16(c->prev_sample);
-    c->step_index = av_clip(c->step_index + ff_adpcm_index_table[nibble], 0, 88);
+    c->step_index  = av_clip(c->step_index + ff_adpcm_index_table[nibble], 0, 88);
 
     return nibble;
 }
 
-static inline unsigned char adpcm_ms_compress_sample(ADPCMChannelStatus *c, short sample)
+static inline unsigned char adpcm_ms_compress_sample(ADPCMChannelStatus *c,
+                                                     short sample)
 {
     int predictor, nibble, bias;
 
-    predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
+    predictor = (((c->sample1) * (c->coeff1)) +
+                (( c->sample2) * (c->coeff2))) / 64;
 
-    nibble= sample - predictor;
-    if(nibble>=0) bias= c->idelta/2;
-    else          bias=-c->idelta/2;
+    nibble = sample - predictor;
+    if (nibble >= 0)
+        bias =  c->idelta / 2;
+    else
+        bias = -c->idelta / 2;
 
-    nibble= (nibble + bias) / c->idelta;
-    nibble= av_clip(nibble, -8, 7)&0x0F;
+    nibble = (nibble + bias) / c->idelta;
+    nibble = av_clip(nibble, -8, 7) & 0x0F;
 
-    predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
+    predictor += (signed)((nibble & 0x08) ? (nibble - 0x10) : nibble) * c->idelta;
 
     c->sample2 = c->sample1;
     c->sample1 = av_clip_int16(predictor);
 
     c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
-    if (c->idelta < 16) c->idelta = 16;
+    if (c->idelta < 16)
+        c->idelta = 16;
 
     return nibble;
 }
 
-static inline unsigned char adpcm_yamaha_compress_sample(ADPCMChannelStatus *c, short sample)
+static inline unsigned char adpcm_yamaha_compress_sample(ADPCMChannelStatus *c,
+                                                         short sample)
 {
     int nibble, delta;
 
-    if(!c->step) {
+    if (!c->step) {
         c->predictor = 0;
-        c->step = 127;
+        c->step      = 127;
     }
 
     delta = sample - c->predictor;
 
-    nibble = FFMIN(7, abs(delta)*4/c->step) + (delta<0)*8;
+    nibble = FFMIN(7, abs(delta) * 4 / c->step) + (delta < 0) * 8;
 
     c->predictor += ((c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8);
     c->predictor = av_clip_int16(c->predictor);
@@ -249,57 +268,61 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
     //FIXME 6% faster if frontier is a compile-time constant
     ADPCMEncodeContext *s = avctx->priv_data;
     const int frontier = 1 << avctx->trellis;
-    const int stride = avctx->channels;
-    const int version = avctx->codec->id;
-    TrellisPath *paths = s->paths, *p;
-    TrellisNode *node_buf = s->node_buf;
-    TrellisNode **nodep_buf = s->nodep_buf;
-    TrellisNode **nodes = nodep_buf; // nodes[] is always sorted by .ssd
+    const int stride   = avctx->channels;
+    const int version  = avctx->codec->id;
+    TrellisPath *paths       = s->paths, *p;
+    TrellisNode *node_buf    = s->node_buf;
+    TrellisNode **nodep_buf  = s->nodep_buf;
+    TrellisNode **nodes      = nodep_buf; // nodes[] is always sorted by .ssd
     TrellisNode **nodes_next = nodep_buf + frontier;
     int pathn = 0, froze = -1, i, j, k, generation = 0;
     uint8_t *hash = s->trellis_hash;
     memset(hash, 0xff, 65536 * sizeof(*hash));
 
     memset(nodep_buf, 0, 2 * frontier * sizeof(*nodep_buf));
-    nodes[0] = node_buf + frontier;
-    nodes[0]->ssd = 0;
-    nodes[0]->path = 0;
-    nodes[0]->step = c->step_index;
+    nodes[0]          = node_buf + frontier;
+    nodes[0]->ssd     = 0;
+    nodes[0]->path    = 0;
+    nodes[0]->step    = c->step_index;
     nodes[0]->sample1 = c->sample1;
     nodes[0]->sample2 = c->sample2;
-    if((version == CODEC_ID_ADPCM_IMA_WAV) || (version == CODEC_ID_ADPCM_IMA_QT) || (version == CODEC_ID_ADPCM_SWF))
+    if (version == CODEC_ID_ADPCM_IMA_WAV ||
+        version == CODEC_ID_ADPCM_IMA_QT  ||
+        version == CODEC_ID_ADPCM_SWF)
         nodes[0]->sample1 = c->prev_sample;
-    if(version == CODEC_ID_ADPCM_MS)
+    if (version == CODEC_ID_ADPCM_MS)
         nodes[0]->step = c->idelta;
-    if(version == CODEC_ID_ADPCM_YAMAHA) {
-        if(c->step == 0) {
-            nodes[0]->step = 127;
+    if (version == CODEC_ID_ADPCM_YAMAHA) {
+        if (c->step == 0) {
+            nodes[0]->step    = 127;
             nodes[0]->sample1 = 0;
         } else {
-            nodes[0]->step = c->step;
+            nodes[0]->step    = c->step;
             nodes[0]->sample1 = c->predictor;
         }
     }
 
-    for(i=0; i<n; i++) {
+    for (i = 0; i < n; i++) {
         TrellisNode *t = node_buf + frontier*(i&1);
         TrellisNode **u;
-        int sample = samples[i*stride];
+        int sample   = samples[i * stride];
         int heap_pos = 0;
-        memset(nodes_next, 0, frontier*sizeof(TrellisNode*));
-        for(j=0; j<frontier && nodes[j]; j++) {
-            // higher j have higher ssd already, so they're likely to yield a suboptimal next sample too
-            const int range = (j < frontier/2) ? 1 : 0;
-            const int step = nodes[j]->step;
+        memset(nodes_next, 0, frontier * sizeof(TrellisNode*));
+        for (j = 0; j < frontier && nodes[j]; j++) {
+            // higher j have higher ssd already, so they're likely
+            // to yield a suboptimal next sample too
+            const int range = (j < frontier / 2) ? 1 : 0;
+            const int step  = nodes[j]->step;
             int nidx;
-            if(version == CODEC_ID_ADPCM_MS) {
-                const int predictor = ((nodes[j]->sample1 * c->coeff1) + (nodes[j]->sample2 * c->coeff2)) / 64;
-                const int div = (sample - predictor) / step;
+            if (version == CODEC_ID_ADPCM_MS) {
+                const int predictor = ((nodes[j]->sample1 * c->coeff1) +
+                                       (nodes[j]->sample2 * c->coeff2)) / 64;
+                const int div  = (sample - predictor) / step;
                 const int nmin = av_clip(div-range, -8, 6);
                 const int nmax = av_clip(div+range, -7, 7);
-                for(nidx=nmin; nidx<=nmax; nidx++) {
+                for (nidx = nmin; nidx <= nmax; nidx++) {
                     const int nibble = nidx & 0xf;
-                    int dec_sample = predictor + nidx * step;
+                    int dec_sample   = predictor + nidx * step;
 #define STORE_NODE(NAME, STEP_INDEX)\
                     int d;\
                     uint32_t ssd;\
@@ -334,25 +357,26 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
                     } else {\
                         /* Try to replace one of the leaf nodes with the new \
                          * one, but try a different slot each time. */\
-                        pos = (frontier >> 1) + (heap_pos & ((frontier >> 1) - 1));\
+                        pos = (frontier >> 1) +\
+                              (heap_pos & ((frontier >> 1) - 1));\
                         if (ssd > nodes_next[pos]->ssd)\
                             goto next_##NAME;\
                         heap_pos++;\
                     }\
                     *h = generation;\
-                    u = nodes_next[pos];\
-                    if(!u) {\
-                        assert(pathn < FREEZE_INTERVAL<<avctx->trellis);\
+                    u  = nodes_next[pos];\
+                    if (!u) {\
+                        assert(pathn < FREEZE_INTERVAL << avctx->trellis);\
                         u = t++;\
                         nodes_next[pos] = u;\
                         u->path = pathn++;\
                     }\
-                    u->ssd = ssd;\
+                    u->ssd  = ssd;\
                     u->step = STEP_INDEX;\
                     u->sample2 = nodes[j]->sample1;\
                     u->sample1 = dec_sample;\
                     paths[u->path].nibble = nibble;\
-                    paths[u->path].prev = nodes[j]->path;\
+                    paths[u->path].prev   = nodes[j]->path;\
                     /* Sift the newly inserted node up in the heap to \
                      * restore the heap property. */\
                     while (pos > 0) {\
@@ -363,24 +387,34 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
                         pos = parent;\
                     }\
                     next_##NAME:;
-                    STORE_NODE(ms, FFMAX(16, (ff_adpcm_AdaptationTable[nibble] * step) >> 8));
+                    STORE_NODE(ms, FFMAX(16,
+                               (ff_adpcm_AdaptationTable[nibble] * step) >> 8));
                 }
-            } else if((version == CODEC_ID_ADPCM_IMA_WAV)|| (version == CODEC_ID_ADPCM_IMA_QT)|| (version == CODEC_ID_ADPCM_SWF)) {
+            } else if (version == CODEC_ID_ADPCM_IMA_WAV ||
+                       version == CODEC_ID_ADPCM_IMA_QT  ||
+                       version == CODEC_ID_ADPCM_SWF) {
 #define LOOP_NODES(NAME, STEP_TABLE, STEP_INDEX)\
                 const int predictor = nodes[j]->sample1;\
                 const int div = (sample - predictor) * 4 / STEP_TABLE;\
-                int nmin = av_clip(div-range, -7, 6);\
-                int nmax = av_clip(div+range, -6, 7);\
-                if(nmin<=0) nmin--; /* distinguish -0 from +0 */\
-                if(nmax<0) nmax--;\
-                for(nidx=nmin; nidx<=nmax; nidx++) {\
-                    const int nibble = nidx<0 ? 7-nidx : nidx;\
-                    int dec_sample = predictor + (STEP_TABLE * ff_adpcm_yamaha_difflookup[nibble]) / 8;\
+                int nmin = av_clip(div - range, -7, 6);\
+                int nmax = av_clip(div + range, -6, 7);\
+                if (nmin <= 0)\
+                    nmin--; /* distinguish -0 from +0 */\
+                if (nmax < 0)\
+                    nmax--;\
+                for (nidx = nmin; nidx <= nmax; nidx++) {\
+                    const int nibble = nidx < 0 ? 7 - nidx : nidx;\
+                    int dec_sample = predictor +\
+                                    (STEP_TABLE *\
+                                     ff_adpcm_yamaha_difflookup[nibble]) / 8;\
                     STORE_NODE(NAME, STEP_INDEX);\
                 }
-                LOOP_NODES(ima, ff_adpcm_step_table[step], av_clip(step + ff_adpcm_index_table[nibble], 0, 88));
+                LOOP_NODES(ima, ff_adpcm_step_table[step],
+                           av_clip(step + ff_adpcm_index_table[nibble], 0, 88));
             } else { //CODEC_ID_ADPCM_YAMAHA
-                LOOP_NODES(yamaha, step, av_clip((step * ff_adpcm_yamaha_indexscale[nibble]) >> 8, 127, 24567));
+                LOOP_NODES(yamaha, step,
+                           av_clip((step * ff_adpcm_yamaha_indexscale[nibble]) >> 8,
+                                   127, 24567));
 #undef LOOP_NODES
 #undef STORE_NODE
             }
@@ -397,16 +431,16 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
         }
 
         // prevent overflow
-        if(nodes[0]->ssd > (1<<28)) {
-            for(j=1; j<frontier && nodes[j]; j++)
+        if (nodes[0]->ssd > (1 << 28)) {
+            for (j = 1; j < frontier && nodes[j]; j++)
                 nodes[j]->ssd -= nodes[0]->ssd;
             nodes[0]->ssd = 0;
         }
 
         // merge old paths to save memory
-        if(i == froze + FREEZE_INTERVAL) {
+        if (i == froze + FREEZE_INTERVAL) {
             p = &paths[nodes[0]->path];
-            for(k=i; k>froze; k--) {
+            for (k = i; k > froze; k--) {
                 dst[k] = p->nibble;
                 p = &paths[p->prev];
             }
@@ -415,26 +449,26 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
             // other nodes might use paths that don't coincide with the frozen one.
             // checking which nodes do so is too slow, so just kill them all.
             // this also slightly improves quality, but I don't know why.
-            memset(nodes+1, 0, (frontier-1)*sizeof(TrellisNode*));
+            memset(nodes + 1, 0, (frontier - 1) * sizeof(TrellisNode*));
         }
     }
 
     p = &paths[nodes[0]->path];
-    for(i=n-1; i>froze; i--) {
+    for (i = n - 1; i > froze; i--) {
         dst[i] = p->nibble;
         p = &paths[p->prev];
     }
 
-    c->predictor = nodes[0]->sample1;
-    c->sample1 = nodes[0]->sample1;
-    c->sample2 = nodes[0]->sample2;
+    c->predictor  = nodes[0]->sample1;
+    c->sample1    = nodes[0]->sample1;
+    c->sample2    = nodes[0]->sample2;
     c->step_index = nodes[0]->step;
-    c->step = nodes[0]->step;
-    c->idelta = nodes[0]->step;
+    c->step       = nodes[0]->step;
+    c->idelta     = nodes[0]->step;
 }
 
 static int adpcm_encode_frame(AVCodecContext *avctx,
-                            unsigned char *frame, int buf_size, void *data)
+                              unsigned char *frame, int buf_size, void *data)
 {
     int n, i, st;
     short *samples;
@@ -444,98 +478,96 @@ static int adpcm_encode_frame(AVCodecContext *avctx,
 
     dst = frame;
     samples = (short *)data;
-    st= avctx->channels == 2;
-/*    n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */
+    st = avctx->channels == 2;
+    /* n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */
 
     switch(avctx->codec->id) {
     case CODEC_ID_ADPCM_IMA_WAV:
         n = avctx->frame_size / 8;
-            c->status[0].prev_sample = (signed short)samples[0]; /* XXX */
-/*            c->status[0].step_index = 0; *//* XXX: not sure how to init the state machine */
-            bytestream_put_le16(&dst, c->status[0].prev_sample);
-            *dst++ = (unsigned char)c->status[0].step_index;
-            *dst++ = 0; /* unknown */
+        c->status[0].prev_sample = (signed short)samples[0]; /* XXX */
+        /* c->status[0].step_index = 0;
+        XXX: not sure how to init the state machine */
+        bytestream_put_le16(&dst, c->status[0].prev_sample);
+        *dst++ = (unsigned char)c->status[0].step_index;
+        *dst++ = 0; /* unknown */
+        samples++;
+        if (avctx->channels == 2) {
+            c->status[1].prev_sample = (signed short)samples[0];
+            /* c->status[1].step_index = 0; */
+            bytestream_put_le16(&dst, c->status[1].prev_sample);
+            *dst++ = (unsigned char)c->status[1].step_index;
+            *dst++ = 0;
             samples++;
-            if (avctx->channels == 2) {
-                c->status[1].prev_sample = (signed short)samples[0];
-/*                c->status[1].step_index = 0; */
-                bytestream_put_le16(&dst, c->status[1].prev_sample);
-                *dst++ = (unsigned char)c->status[1].step_index;
-                *dst++ = 0;
-                samples++;
-            }
+        }
 
-            /* stereo: 4 bytes (8 samples) for left, 4 bytes for right, 4 bytes left, ... */
-            if(avctx->trellis > 0) {
-                FF_ALLOC_OR_GOTO(avctx, buf, 2*n*8, error);
-                adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n*8);
-                if(avctx->channels == 2)
-                    adpcm_compress_trellis(avctx, samples+1, buf + n*8, &c->status[1], n*8);
-                for(i=0; i<n; i++) {
-                    *dst++ = buf[8*i+0] | (buf[8*i+1] << 4);
-                    *dst++ = buf[8*i+2] | (buf[8*i+3] << 4);
-                    *dst++ = buf[8*i+4] | (buf[8*i+5] << 4);
-                    *dst++ = buf[8*i+6] | (buf[8*i+7] << 4);
-                    if (avctx->channels == 2) {
-                        uint8_t *buf1 = buf + n*8;
-                        *dst++ = buf1[8*i+0] | (buf1[8*i+1] << 4);
-                        *dst++ = buf1[8*i+2] | (buf1[8*i+3] << 4);
-                        *dst++ = buf1[8*i+4] | (buf1[8*i+5] << 4);
-                        *dst++ = buf1[8*i+6] | (buf1[8*i+7] << 4);
-                    }
+        /* stereo: 4 bytes (8 samples) for left,
+            4 bytes for right, 4 bytes left, ... */
+        if (avctx->trellis > 0) {
+            FF_ALLOC_OR_GOTO(avctx, buf, 2 * n * 8, error);
+            adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n * 8);
+            if (avctx->channels == 2)
+                adpcm_compress_trellis(avctx, samples + 1, buf + n * 8,
+                                       &c->status[1], n * 8);
+            for (i = 0; i < n; i++) {
+                *dst++ = buf[8 * i + 0] | (buf[8 * i + 1] << 4);
+                *dst++ = buf[8 * i + 2] | (buf[8 * i + 3] << 4);
+                *dst++ = buf[8 * i + 4] | (buf[8 * i + 5] << 4);
+                *dst++ = buf[8 * i + 6] | (buf[8 * i + 7] << 4);
+                if (avctx->channels == 2) {
+                    uint8_t *buf1 = buf + n * 8;
+                    *dst++ = buf1[8 * i + 0] | (buf1[8 * i + 1] << 4);
+                    *dst++ = buf1[8 * i + 2] | (buf1[8 * i + 3] << 4);
+                    *dst++ = buf1[8 * i + 4] | (buf1[8 * i + 5] << 4);
+                    *dst++ = buf1[8 * i + 6] | (buf1[8 * i + 7] << 4);
                 }
-                av_free(buf);
-            } else
-            for (; n>0; n--) {
-                *dst = adpcm_ima_compress_sample(&c->status[0], samples[0]);
-                *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels]) << 4;
-                dst++;
-                *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]);
-                *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4;
-                dst++;
-                *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]);
-                *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4;
-                dst++;
-                *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]);
-                *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4;
-                dst++;
+            }
+            av_free(buf);
+        } else {
+            for (; n > 0; n--) {
+                *dst    = adpcm_ima_compress_sample(&c->status[0], samples[0]);
+                *dst++ |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels    ]) << 4;
+                *dst    = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]);
+                *dst++ |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4;
+                *dst    = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]);
+                *dst++ |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4;
+                *dst    = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]);
+                *dst++ |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4;
                 /* right channel */
                 if (avctx->channels == 2) {
-                    *dst = adpcm_ima_compress_sample(&c->status[1], samples[1]);
-                    *dst |= adpcm_ima_compress_sample(&c->status[1], samples[3]) << 4;
-                    dst++;
-                    *dst = adpcm_ima_compress_sample(&c->status[1], samples[5]);
-                    *dst |= adpcm_ima_compress_sample(&c->status[1], samples[7]) << 4;
-                    dst++;
-                    *dst = adpcm_ima_compress_sample(&c->status[1], samples[9]);
-                    *dst |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4;
-                    dst++;
-                    *dst = adpcm_ima_compress_sample(&c->status[1], samples[13]);
-                    *dst |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4;
-                    dst++;
+                    *dst    = adpcm_ima_compress_sample(&c->status[1], samples[1 ]);
+                    *dst++ |= adpcm_ima_compress_sample(&c->status[1], samples[3 ]) << 4;
+                    *dst    = adpcm_ima_compress_sample(&c->status[1], samples[5 ]);
+                    *dst++ |= adpcm_ima_compress_sample(&c->status[1], samples[7 ]) << 4;
+                    *dst    = adpcm_ima_compress_sample(&c->status[1], samples[9 ]);
+                    *dst++ |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4;
+                    *dst    = adpcm_ima_compress_sample(&c->status[1], samples[13]);
+                    *dst++ |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4;
                 }
                 samples += 8 * avctx->channels;
             }
+        }
         break;
     case CODEC_ID_ADPCM_IMA_QT:
     {
         int ch, i;
         PutBitContext pb;
-        init_put_bits(&pb, dst, buf_size*8);
+        init_put_bits(&pb, dst, buf_size * 8);
 
-        for(ch=0; ch<avctx->channels; ch++){
+        for (ch = 0; ch < avctx->channels; ch++) {
             put_bits(&pb, 9, (c->status[ch].prev_sample + 0x10000) >> 7);
-            put_bits(&pb, 7, c->status[ch].step_index);
-            if(avctx->trellis > 0) {
+            put_bits(&pb, 7,  c->status[ch].step_index);
+            if (avctx->trellis > 0) {
                 uint8_t buf[64];
                 adpcm_compress_trellis(avctx, samples+ch, buf, &c->status[ch], 64);
-                for(i=0; i<64; i++)
-                    put_bits(&pb, 4, buf[i^1]);
+                for (i = 0; i < 64; i++)
+                    put_bits(&pb, 4, buf[i ^ 1]);
             } else {
-                for (i=0; i<64; i+=2){
+                for (i = 0; i < 64; i += 2) {
                     int t1, t2;
-                    t1 = adpcm_ima_qt_compress_sample(&c->status[ch], samples[avctx->channels*(i+0)+ch]);
-                    t2 = adpcm_ima_qt_compress_sample(&c->status[ch], samples[avctx->channels*(i+1)+ch]);
+                    t1 = adpcm_ima_qt_compress_sample(&c->status[ch],
+                                                      samples[avctx->channels * (i + 0) + ch]);
+                    t2 = adpcm_ima_qt_compress_sample(&c->status[ch],
+                                                      samples[avctx->channels * (i + 1) + ch]);
                     put_bits(&pb, 4, t2);
                     put_bits(&pb, 4, t1);
                 }
@@ -543,119 +575,120 @@ static int adpcm_encode_frame(AVCodecContext *avctx,
         }
 
         flush_put_bits(&pb);
-        dst += put_bits_count(&pb)>>3;
+        dst += put_bits_count(&pb) >> 3;
         break;
     }
     case CODEC_ID_ADPCM_SWF:
     {
         int i;
         PutBitContext pb;
-        init_put_bits(&pb, dst, buf_size*8);
+        init_put_bits(&pb, dst, buf_size * 8);
 
-        n = avctx->frame_size-1;
+        n = avctx->frame_size - 1;
 
-        //Store AdpcmCodeSize
-        put_bits(&pb, 2, 2);                //Set 4bits flash adpcm format
+        // store AdpcmCodeSize
+        put_bits(&pb, 2, 2);    // set 4-bit flash adpcm format
 
-        //Init the encoder state
-        for(i=0; i<avctx->channels; i++){
-            c->status[i].step_index = av_clip(c->status[i].step_index, 0, 63); // clip step so it fits 6 bits
+        // init the encoder state
+        for (i = 0; i < avctx->channels; i++) {
+            // clip step so it fits 6 bits
+            c->status[i].step_index = av_clip(c->status[i].step_index, 0, 63);
             put_sbits(&pb, 16, samples[i]);
             put_bits(&pb, 6, c->status[i].step_index);
             c->status[i].prev_sample = (signed short)samples[i];
         }
 
-        if(avctx->trellis > 0) {
-            FF_ALLOC_OR_GOTO(avctx, buf, 2*n, error);
-            adpcm_compress_trellis(avctx, samples+2, buf, &c->status[0], n);
+        if (avctx->trellis > 0) {
+            FF_ALLOC_OR_GOTO(avctx, buf, 2 * n, error);
+            adpcm_compress_trellis(avctx, samples + 2, buf, &c->status[0], n);
             if (avctx->channels == 2)
-                adpcm_compress_trellis(avctx, samples+3, buf+n, &c->status[1], n);
-            for(i=0; i<n; i++) {
+                adpcm_compress_trellis(avctx, samples + 3, buf + n,
+                                       &c->status[1], n);
+            for (i = 0; i < n; i++) {
                 put_bits(&pb, 4, buf[i]);
                 if (avctx->channels == 2)
-                    put_bits(&pb, 4, buf[n+i]);
+                    put_bits(&pb, 4, buf[n + i]);
             }
             av_free(buf);
         } else {
-            for (i=1; i<avctx->frame_size; i++) {
-                put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels*i]));
+            for (i = 1; i < avctx->frame_size; i++) {
+                put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[0],
+                         samples[avctx->channels * i]));
                 if (avctx->channels == 2)
-                    put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[1], samples[2*i+1]));
+                    put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[1],
+                             samples[2 * i + 1]));
             }
         }
         flush_put_bits(&pb);
-        dst += put_bits_count(&pb)>>3;
+        dst += put_bits_count(&pb) >> 3;
         break;
     }
     case CODEC_ID_ADPCM_MS:
-        for(i=0; i<avctx->channels; i++){
-            int predictor=0;
-
+        for (i = 0; i < avctx->channels; i++) {
+            int predictor = 0;
             *dst++ = predictor;
             c->status[i].coeff1 = ff_adpcm_AdaptCoeff1[predictor];
             c->status[i].coeff2 = ff_adpcm_AdaptCoeff2[predictor];
         }
-        for(i=0; i<avctx->channels; i++){
+        for (i = 0; i < avctx->channels; i++) {
             if (c->status[i].idelta < 16)
                 c->status[i].idelta = 16;
-
             bytestream_put_le16(&dst, c->status[i].idelta);
         }
-        for(i=0; i<avctx->channels; i++){
+        for (i = 0; i < avctx->channels; i++)
             c->status[i].sample2= *samples++;
-        }
-        for(i=0; i<avctx->channels; i++){
-            c->status[i].sample1= *samples++;
-
+        for (i = 0; i < avctx->channels; i++) {
+            c->status[i].sample1 = *samples++;
             bytestream_put_le16(&dst, c->status[i].sample1);
         }
-        for(i=0; i<avctx->channels; i++)
+        for (i = 0; i < avctx->channels; i++)
             bytestream_put_le16(&dst, c->status[i].sample2);
 
-        if(avctx->trellis > 0) {
-            int n = avctx->block_align - 7*avctx->channels;
-            FF_ALLOC_OR_GOTO(avctx, buf, 2*n, error);
-            if(avctx->channels == 1) {
+        if (avctx->trellis > 0) {
+            int n = avctx->block_align - 7 * avctx->channels;
+            FF_ALLOC_OR_GOTO(avctx, buf, 2 * n, error);
+            if (avctx->channels == 1) {
                 adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
-                for(i=0; i<n; i+=2)
-                    *dst++ = (buf[i] << 4) | buf[i+1];
+                for (i = 0; i < n; i += 2)
+                    *dst++ = (buf[i] << 4) | buf[i + 1];
             } else {
-                adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
-                adpcm_compress_trellis(avctx, samples+1, buf+n, &c->status[1], n);
-                for(i=0; i<n; i++)
-                    *dst++ = (buf[i] << 4) | buf[n+i];
+                adpcm_compress_trellis(avctx, samples,     buf,     &c->status[0], n);
+                adpcm_compress_trellis(avctx, samples + 1, buf + n, &c->status[1], n);
+                for (i = 0; i < n; i++)
+                    *dst++ = (buf[i] << 4) | buf[n + i];
             }
             av_free(buf);
-        } else
-        for(i=7*avctx->channels; i<avctx->block_align; i++) {
-            int nibble;
-            nibble = adpcm_ms_compress_sample(&c->status[ 0], *samples++)<<4;
-            nibble|= adpcm_ms_compress_sample(&c->status[st], *samples++);
-            *dst++ = nibble;
+        } else {
+            for (i = 7 * avctx->channels; i < avctx->block_align; i++) {
+                int nibble;
+                nibble  = adpcm_ms_compress_sample(&c->status[ 0], *samples++) << 4;
+                nibble |= adpcm_ms_compress_sample(&c->status[st], *samples++);
+                *dst++  = nibble;
+            }
         }
         break;
     case CODEC_ID_ADPCM_YAMAHA:
         n = avctx->frame_size / 2;
-        if(avctx->trellis > 0) {
-            FF_ALLOC_OR_GOTO(avctx, buf, 2*n*2, error);
+        if (avctx->trellis > 0) {
+            FF_ALLOC_OR_GOTO(avctx, buf, 2 * n * 2, error);
             n *= 2;
-            if(avctx->channels == 1) {
+            if (avctx->channels == 1) {
                 adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
-                for(i=0; i<n; i+=2)
-                    *dst++ = buf[i] | (buf[i+1] << 4);
+                for (i = 0; i < n; i += 2)
+                    *dst++ = buf[i] | (buf[i + 1] << 4);
             } else {
-                adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
-                adpcm_compress_trellis(avctx, samples+1, buf+n, &c->status[1], n);
-                for(i=0; i<n; i++)
-                    *dst++ = buf[i] | (buf[n+i] << 4);
+                adpcm_compress_trellis(avctx, samples,     buf,     &c->status[0], n);
+                adpcm_compress_trellis(avctx, samples + 1, buf + n, &c->status[1], n);
+                for (i = 0; i < n; i++)
+                    *dst++ = buf[i] | (buf[n + i] << 4);
             }
             av_free(buf);
         } else
-            for (n *= avctx->channels; n>0; n--) {
+            for (n *= avctx->channels; n > 0; n--) {
                 int nibble;
                 nibble  = adpcm_yamaha_compress_sample(&c->status[ 0], *samples++);
                 nibble |= adpcm_yamaha_compress_sample(&c->status[st], *samples++) << 4;
-                *dst++ = nibble;
+                *dst++  = nibble;
             }
         break;
     default:
@@ -675,12 +708,13 @@ AVCodec ff_ ## name_ ## _encoder = {                        \
     .init           = adpcm_encode_init,                    \
     .encode         = adpcm_encode_frame,                   \
     .close          = adpcm_encode_close,                   \
-    .sample_fmts    = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE}, \
+    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16,   \
+                                                      AV_SAMPLE_FMT_NONE}, \
     .long_name      = NULL_IF_CONFIG_SMALL(long_name_),     \
 }
 
-ADPCM_ENCODER(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, "ADPCM IMA QuickTime");
+ADPCM_ENCODER(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt,   "ADPCM IMA QuickTime");
 ADPCM_ENCODER(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, "ADPCM IMA WAV");
-ADPCM_ENCODER(CODEC_ID_ADPCM_MS, adpcm_ms, "ADPCM Microsoft");
-ADPCM_ENCODER(CODEC_ID_ADPCM_SWF, adpcm_swf, "ADPCM Shockwave Flash");
-ADPCM_ENCODER(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha, "ADPCM Yamaha");
+ADPCM_ENCODER(CODEC_ID_ADPCM_MS, adpcm_ms,           "ADPCM Microsoft");
+ADPCM_ENCODER(CODEC_ID_ADPCM_SWF, adpcm_swf,         "ADPCM Shockwave Flash");
+ADPCM_ENCODER(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha,   "ADPCM Yamaha");
diff --git a/libavcodec/bmp.c b/libavcodec/bmp.c
index 81ecf6e50b..5971145401 100644
--- a/libavcodec/bmp.c
+++ b/libavcodec/bmp.c
@@ -263,9 +263,9 @@ static int bmp_decode_frame(AVCodecContext *avctx,
     }else{
         switch(depth){
         case 1:
-            for(i = 0; i < avctx->height; i++){
+            for (i = 0; i < avctx->height; i++) {
                 int j;
-                for(j = 0; j < n; j++){
+                for (j = 0; j < n; j++) {
                     ptr[j*8+0] =  buf[j] >> 7;
                     ptr[j*8+1] = (buf[j] >> 6) & 1;
                     ptr[j*8+2] = (buf[j] >> 5) & 1;
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 1d3bb0cdf2..d72e6d23de 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -66,44 +66,61 @@ static void dct_unquantize_h263_inter_c(MpegEncContext *s,
 //#define DEBUG
 
 
-static const uint8_t ff_default_chroma_qscale_table[32]={
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
+static const uint8_t ff_default_chroma_qscale_table[32] = {
+//   0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
+     0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+    16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
 };
 
-const uint8_t ff_mpeg1_dc_scale_table[128]={
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+const uint8_t ff_mpeg1_dc_scale_table[128] = {
+//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
 };
 
-static const uint8_t mpeg2_dc_scale_table1[128]={
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+static const uint8_t mpeg2_dc_scale_table1[128] = {
+//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 };
 
-static const uint8_t mpeg2_dc_scale_table2[128]={
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+static const uint8_t mpeg2_dc_scale_table2[128] = {
+//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 };
 
-static const uint8_t mpeg2_dc_scale_table3[128]={
-//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+static const uint8_t mpeg2_dc_scale_table3[128] = {
+//  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 };
 
-const uint8_t * const ff_mpeg2_dc_scale_table[4]={
+const uint8_t *const ff_mpeg2_dc_scale_table[4] = {
     ff_mpeg1_dc_scale_table,
     mpeg2_dc_scale_table1,
     mpeg2_dc_scale_table2,
@@ -123,34 +140,37 @@ const enum PixelFormat ff_hwaccel_pixfmt_list_420[] = {
     PIX_FMT_NONE
 };
 
-const uint8_t *avpriv_mpv_find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
+const uint8_t *avpriv_mpv_find_start_code(const uint8_t *restrict p,
+                                          const uint8_t *end,
+                                          uint32_t * restrict state)
+{
     int i;
 
-    assert(p<=end);
-    if(p>=end)
+    assert(p <= end);
+    if (p >= end)
         return end;
 
-    for(i=0; i<3; i++){
-        uint32_t tmp= *state << 8;
-        *state= tmp + *(p++);
-        if(tmp == 0x100 || p==end)
+    for (i = 0; i < 3; i++) {
+        uint32_t tmp = *state << 8;
+        *state = tmp + *(p++);
+        if (tmp == 0x100 || p == end)
             return p;
     }
 
-    while(p<end){
-        if     (p[-1] > 1      ) p+= 3;
-        else if(p[-2]          ) p+= 2;
-        else if(p[-3]|(p[-1]-1)) p++;
-        else{
+    while (p < end) {
+        if      (p[-1] > 1      ) p += 3;
+        else if (p[-2]          ) p += 2;
+        else if (p[-3]|(p[-1]-1)) p++;
+        else {
             p++;
             break;
         }
     }
 
-    p= FFMIN(p, end)-4;
-    *state= AV_RB32(p);
+    p = FFMIN(p, end) - 4;
+    *state = AV_RB32(p);
 
-    return p+4;
+    return p + 4;
 }
 
 /* init common dct for both encoder and decoder */
@@ -163,11 +183,11 @@ av_cold int ff_dct_common_init(MpegEncContext *s)
     s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
     s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
     s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
-    if(s->flags & CODEC_FLAG_BITEXACT)
+    if (s->flags & CODEC_FLAG_BITEXACT)
         s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
     s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
 
-#if   HAVE_MMX
+#if HAVE_MMX
     MPV_common_init_mmx(s);
 #elif ARCH_ALPHA
     MPV_common_init_axp(s);
@@ -184,12 +204,12 @@ av_cold int ff_dct_common_init(MpegEncContext *s)
 #endif
 
     /* load & permutate scantables
-       note: only wmv uses different ones
-    */
-    if(s->alternate_scan){
+     * note: only wmv uses different ones
+     */
+    if (s->alternate_scan) {
         ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable  , ff_alternate_vertical_scan);
         ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable  , ff_alternate_vertical_scan);
-    }else{
+    } else {
         ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable  , ff_zigzag_direct);
         ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable  , ff_zigzag_direct);
     }
@@ -199,9 +219,10 @@ av_cold int ff_dct_common_init(MpegEncContext *s)
     return 0;
 }
 
-void ff_copy_picture(Picture *dst, Picture *src){
+void ff_copy_picture(Picture *dst, Picture *src)
+{
     *dst = *src;
-    dst->f.type= FF_BUFFER_TYPE_COPY;
+    dst->f.type = FF_BUFFER_TYPE_COPY;
 }
 
 /**
@@ -210,11 +231,12 @@ void ff_copy_picture(Picture *dst, Picture *src){
 static void free_frame_buffer(MpegEncContext *s, Picture *pic)
 {
     /* Windows Media Image codecs allocate internal buffers with different
-       dimensions; ignore user defined callbacks for these */
+     * dimensions; ignore user defined callbacks for these
+     */
     if (s->codec_id != CODEC_ID_WMV3IMAGE && s->codec_id != CODEC_ID_VC1IMAGE)
-        ff_thread_release_buffer(s->avctx, (AVFrame*)pic);
+        ff_thread_release_buffer(s->avctx, (AVFrame *) pic);
     else
-        avcodec_default_release_buffer(s->avctx, (AVFrame*)pic);
+        avcodec_default_release_buffer(s->avctx, (AVFrame *) pic);
     av_freep(&pic->f.hwaccel_picture_private);
 }
 
@@ -237,9 +259,9 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
     }
 
     if (s->codec_id != CODEC_ID_WMV3IMAGE && s->codec_id != CODEC_ID_VC1IMAGE)
-        r = ff_thread_get_buffer(s->avctx, (AVFrame*)pic);
+        r = ff_thread_get_buffer(s->avctx, (AVFrame *) pic);
     else
-        r = avcodec_default_get_buffer(s->avctx, (AVFrame*)pic);
+        r = avcodec_default_get_buffer(s->avctx, (AVFrame *) pic);
 
     if (r < 0 || !pic->f.age || !pic->f.type || !pic->f.data[0]) {
         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n",
@@ -248,14 +270,17 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
         return -1;
     }
 
-    if (s->linesize && (s->linesize != pic->f.linesize[0] || s->uvlinesize != pic->f.linesize[1])) {
-        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (stride changed)\n");
+    if (s->linesize && (s->linesize   != pic->f.linesize[0] ||
+                        s->uvlinesize != pic->f.linesize[1])) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "get_buffer() failed (stride changed)\n");
         free_frame_buffer(s, pic);
         return -1;
     }
 
     if (pic->f.linesize[1] != pic->f.linesize[2]) {
-        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n");
+        av_log(s->avctx, AV_LOG_ERROR,
+               "get_buffer() failed (uv stride mismatch)\n");
         free_frame_buffer(s, pic);
         return -1;
     }
@@ -265,21 +290,25 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
 
 /**
  * allocates a Picture
- * The pixels are allocated/set by calling get_buffer() if shared=0
+ * The pixels are allocated/set by calling get_buffer() if shared = 0
  */
-int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared){
-    const int big_mb_num= s->mb_stride*(s->mb_height+1) + 1; //the +1 is needed so memset(,,stride*height) does not sig11
-    const int mb_array_size= s->mb_stride*s->mb_height;
-    const int b8_array_size= s->b8_stride*s->mb_height*2;
-    const int b4_array_size= s->b4_stride*s->mb_height*4;
+int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
+{
+    const int big_mb_num = s->mb_stride * (s->mb_height + 1) + 1;
+
+    // the + 1 is needed so memset(,,stride*height) does not sig11
+
+    const int mb_array_size = s->mb_stride * s->mb_height;
+    const int b8_array_size = s->b8_stride * s->mb_height * 2;
+    const int b4_array_size = s->b4_stride * s->mb_height * 4;
     int i;
-    int r= -1;
+    int r = -1;
 
-    if(shared){
+    if (shared) {
         assert(pic->f.data[0]);
         assert(pic->f.type == 0 || pic->f.type == FF_BUFFER_TYPE_SHARED);
         pic->f.type = FF_BUFFER_TYPE_SHARED;
-    }else{
+    } else {
         assert(!pic->f.data[0]);
 
         if (alloc_frame_buffer(s, pic) < 0)
@@ -291,49 +320,69 @@ int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared){
 
     if (pic->f.qscale_table == NULL) {
         if (s->encoding) {
-            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_var   , mb_array_size * sizeof(int16_t)  , fail)
-            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mc_mb_var, mb_array_size * sizeof(int16_t)  , fail)
-            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_mean  , mb_array_size * sizeof(int8_t )  , fail)
+            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_var,
+                              mb_array_size * sizeof(int16_t), fail)
+            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mc_mb_var,
+                              mb_array_size * sizeof(int16_t), fail)
+            FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_mean,
+                              mb_array_size * sizeof(int8_t ), fail)
         }
 
-        FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.mbskip_table, mb_array_size * sizeof(uint8_t) + 2, fail) //the +2 is for the slice end check
-        FF_ALLOCZ_OR_GOTO(s->avctx, pic->qscale_table_base , (big_mb_num + s->mb_stride) * sizeof(uint8_t)  , fail)
-        FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_type_base , (big_mb_num + s->mb_stride) * sizeof(uint32_t), fail)
-        pic->f.mb_type = pic->mb_type_base + 2*s->mb_stride + 1;
-        pic->f.qscale_table = pic->qscale_table_base + 2*s->mb_stride + 1;
-        if(s->out_format == FMT_H264){
-            for(i=0; i<2; i++){
-                FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i], 2 * (b4_array_size+4)  * sizeof(int16_t), fail)
+        FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.mbskip_table,
+                          mb_array_size * sizeof(uint8_t) + 2, fail)// the + 2 is for the slice end check
+        FF_ALLOCZ_OR_GOTO(s->avctx, pic->qscale_table_base,
+                          (big_mb_num + s->mb_stride) * sizeof(uint8_t),
+                          fail)
+        FF_ALLOCZ_OR_GOTO(s->avctx, pic->mb_type_base,
+                          (big_mb_num + s->mb_stride) * sizeof(uint32_t),
+                          fail)
+        pic->f.mb_type = pic->mb_type_base + 2 * s->mb_stride + 1;
+        pic->f.qscale_table = pic->qscale_table_base + 2 * s->mb_stride + 1;
+        if (s->out_format == FMT_H264) {
+            for (i = 0; i < 2; i++) {
+                FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i],
+                                  2 * (b4_array_size + 4) * sizeof(int16_t),
+                                  fail)
                 pic->f.motion_val[i] = pic->motion_val_base[i] + 4;
-                FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i], 4*mb_array_size * sizeof(uint8_t), fail)
+                FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i],
+                                  4 * mb_array_size * sizeof(uint8_t), fail)
             }
             pic->f.motion_subsample_log2 = 2;
-        }else if(s->out_format == FMT_H263 || s->encoding || (s->avctx->debug&FF_DEBUG_MV) || (s->avctx->debug_mv)){
-            for(i=0; i<2; i++){
-                FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i], 2 * (b8_array_size+4) * sizeof(int16_t), fail)
+        } else if (s->out_format == FMT_H263 || s->encoding ||
+                   (s->avctx->debug & FF_DEBUG_MV) || s->avctx->debug_mv) {
+            for (i = 0; i < 2; i++) {
+                FF_ALLOCZ_OR_GOTO(s->avctx, pic->motion_val_base[i],
+                                  2 * (b8_array_size + 4) * sizeof(int16_t),
+                                  fail)
                 pic->f.motion_val[i] = pic->motion_val_base[i] + 4;
-                FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i], 4*mb_array_size * sizeof(uint8_t), fail)
+                FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.ref_index[i],
+                                  4 * mb_array_size * sizeof(uint8_t), fail)
             }
             pic->f.motion_subsample_log2 = 3;
         }
-        if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
-            FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.dct_coeff, 64 * mb_array_size * sizeof(DCTELEM) * 6, fail)
+        if (s->avctx->debug&FF_DEBUG_DCT_COEFF) {
+            FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.dct_coeff,
+                              64 * mb_array_size * sizeof(DCTELEM) * 6, fail)
         }
         pic->f.qstride = s->mb_stride;
-        FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.pan_scan , 1 * sizeof(AVPanScan), fail)
+        FF_ALLOCZ_OR_GOTO(s->avctx, pic->f.pan_scan,
+                          1 * sizeof(AVPanScan), fail)
     }
 
     /* It might be nicer if the application would keep track of these
      * but it would require an API change. */
-    memmove(s->prev_pict_types+1, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE-1);
-    s->prev_pict_types[0]= s->dropable ? AV_PICTURE_TYPE_B : s->pict_type;
-    if (pic->f.age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->f.age] == AV_PICTURE_TYPE_B)
-        pic->f.age = INT_MAX; // Skipped MBs in B-frames are quite rare in MPEG-1/2 and it is a bit tricky to skip them anyway.
+    memmove(s->prev_pict_types + 1, s->prev_pict_types,
+            PREV_PICT_TYPES_BUFFER_SIZE-1);
+    s->prev_pict_types[0] =  s->dropable ? AV_PICTURE_TYPE_B : s->pict_type;
+    if (pic->f.age < PREV_PICT_TYPES_BUFFER_SIZE &&
+        s->prev_pict_types[pic->f.age] == AV_PICTURE_TYPE_B)
+        pic->f.age = INT_MAX; // Skipped MBs in B-frames are quite rare in MPEG-1/2
+                              // and it is a bit tricky to skip them anyway.
     pic->owner2 = s;
 
     return 0;
-fail: //for the FF_ALLOCZ_OR_GOTO macro
-    if(r>=0)
+fail: // for  the FF_ALLOCZ_OR_GOTO macro
+    if (r >= 0)
         free_frame_buffer(s, pic);
     return -1;
 }
@@ -341,7 +390,8 @@ fail: //for the FF_ALLOCZ_OR_GOTO macro
 /**
  * deallocates a picture
  */
-static void free_picture(MpegEncContext *s, Picture *pic){
+static void free_picture(MpegEncContext *s, Picture *pic)
+{
     int i;
 
     if (pic->f.data[0] && pic->f.type != FF_BUFFER_TYPE_SHARED) {
@@ -357,13 +407,13 @@ static void free_picture(MpegEncContext *s, Picture *pic){
     av_freep(&pic->f.dct_coeff);
     av_freep(&pic->f.pan_scan);
     pic->f.mb_type = NULL;
-    for(i=0; i<2; i++){
+    for (i = 0; i < 2; i++) {
         av_freep(&pic->motion_val_base[i]);
         av_freep(&pic->f.ref_index[i]);
     }
 
     if (pic->f.type == FF_BUFFER_TYPE_SHARED) {
-        for(i=0; i<4; i++){
+        for (i = 0; i < 4; i++) {
             pic->f.base[i] =
             pic->f.data[i] = NULL;
         }
@@ -371,38 +421,47 @@ static void free_picture(MpegEncContext *s, Picture *pic){
     }
 }
 
-static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
+static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base)
+{
     int y_size = s->b8_stride * (2 * s->mb_height + 1);
     int c_size = s->mb_stride * (s->mb_height + 1);
     int yc_size = y_size + 2 * c_size;
     int i;
 
-    // edge emu needs blocksize + filter length - 1 (=17x17 for halfpel / 21x21 for h264)
-    FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, (s->width+64)*2*21*2, fail); //(width + edge + align)*interlaced*MBsize*tolerance
-
-     //FIXME should be linesize instead of s->width*2 but that is not known before get_buffer()
-    FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad,  (s->width+64)*4*16*2*sizeof(uint8_t), fail)
-    s->me.temp=         s->me.scratchpad;
-    s->rd_scratchpad=   s->me.scratchpad;
-    s->b_scratchpad=    s->me.scratchpad;
-    s->obmc_scratchpad= s->me.scratchpad + 16;
+    // edge emu needs blocksize + filter length - 1
+    // (= 17x17 for  halfpel / 21x21 for  h264)
+    FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer,
+                      (s->width + 64) * 2 * 21 * 2, fail);    // (width + edge + align)*interlaced*MBsize*tolerance
+
+    // FIXME should be linesize instead of s->width * 2
+    // but that is not known before get_buffer()
+    FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad,
+                      (s->width + 64) * 4 * 16 * 2 * sizeof(uint8_t), fail)
+    s->me.temp         = s->me.scratchpad;
+    s->rd_scratchpad   = s->me.scratchpad;
+    s->b_scratchpad    = s->me.scratchpad;
+    s->obmc_scratchpad = s->me.scratchpad + 16;
     if (s->encoding) {
-        FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map      , ME_MAP_SIZE*sizeof(uint32_t), fail)
-        FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map, ME_MAP_SIZE*sizeof(uint32_t), fail)
-        if(s->avctx->noise_reduction){
-            FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum, 2 * 64 * sizeof(int), fail)
+        FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
+                          ME_MAP_SIZE * sizeof(uint32_t), fail)
+        FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
+                          ME_MAP_SIZE * sizeof(uint32_t), fail)
+        if (s->avctx->noise_reduction) {
+            FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
+                              2 * 64 * sizeof(int), fail)
         }
     }
-    FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64*12*2 * sizeof(DCTELEM), fail)
-    s->block= s->blocks[0];
+    FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(DCTELEM), fail)
+    s->block = s->blocks[0];
 
-    for(i=0;i<12;i++){
+    for (i = 0; i < 12; i++) {
         s->pblocks[i] = &s->block[i];
     }
 
     if (s->out_format == FMT_H263) {
         /* ac values */
-        FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base, yc_size * sizeof(int16_t) * 16, fail);
+        FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
+                          yc_size * sizeof(int16_t) * 16, fail);
         s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
         s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
         s->ac_val[2] = s->ac_val[1] + c_size;
@@ -410,29 +469,32 @@ static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
 
     return 0;
 fail:
-    return -1; //free() through MPV_common_end()
+    return -1; // free() through MPV_common_end()
 }
 
-static void free_duplicate_context(MpegEncContext *s){
-    if(s==NULL) return;
+static void free_duplicate_context(MpegEncContext *s)
+{
+    if (s == NULL)
+        return;
 
     av_freep(&s->edge_emu_buffer);
     av_freep(&s->me.scratchpad);
-    s->me.temp=
-    s->rd_scratchpad=
-    s->b_scratchpad=
-    s->obmc_scratchpad= NULL;
+    s->me.temp =
+    s->rd_scratchpad =
+    s->b_scratchpad =
+    s->obmc_scratchpad = NULL;
 
     av_freep(&s->dct_error_sum);
     av_freep(&s->me.map);
     av_freep(&s->me.score_map);
     av_freep(&s->blocks);
     av_freep(&s->ac_val_base);
-    s->block= NULL;
+    s->block = NULL;
 }
 
-static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src){
-#define COPY(a) bak->a= src->a
+static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
+{
+#define COPY(a) bak->a = src->a
     COPY(edge_emu_buffer);
     COPY(me.scratchpad);
     COPY(me.temp);
@@ -457,28 +519,33 @@ static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src){
 #undef COPY
 }
 
-void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src){
+void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
+{
     MpegEncContext bak;
     int i;
-    //FIXME copy only needed parts
-//START_TIMER
+    // FIXME copy only needed parts
+    // START_TIMER
     backup_duplicate_context(&bak, dst);
     memcpy(dst, src, sizeof(MpegEncContext));
     backup_duplicate_context(dst, &bak);
-    for(i=0;i<12;i++){
+    for (i = 0; i < 12; i++) {
         dst->pblocks[i] = &dst->block[i];
     }
-//STOP_TIMER("update_duplicate_context") //about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
+    // STOP_TIMER("update_duplicate_context")
+    // about 10k cycles / 0.01 sec for  1000frames on 1ghz with 2 threads
 }
 
-int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
+int ff_mpeg_update_thread_context(AVCodecContext *dst,
+                                  const AVCodecContext *src)
 {
     MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
 
-    if(dst == src || !s1->context_initialized) return 0;
+    if (dst == src || !s1->context_initialized)
+        return 0;
 
-    //FIXME can parameters change on I-frames? in that case dst may need a reinit
-    if(!s->context_initialized){
+    // FIXME can parameters change on I-frames?
+    // in that case dst may need a reinit
+    if (!s->context_initialized) {
         memcpy(s, s1, sizeof(MpegEncContext));
 
         s->avctx                 = dst;
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index 26ce6fe885..f0a173cc7e 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -331,7 +331,6 @@ static int read_header(ShortenContext *s)
 
     s->lpcqoffset = 0;
     s->blocksize = DEFAULT_BLOCK_SIZE;
-    s->channels = 1;
     s->nmean = -1;
     s->version = get_bits(&s->gb, 8);
     s->internal_ftype = get_uint(s, TYPESIZE);
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 1ccaec665d..1a8c25943f 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -110,7 +110,7 @@ typedef struct WavpackFrameContext {
     int extra_bits;
     int and, or, shift;
     int post_shift;
-    int hybrid, hybrid_bitrate;
+    int hybrid, hybrid_bitrate, hybrid_maxclip;
     int float_flag;
     int float_shift;
     int float_max_exp;
@@ -403,8 +403,14 @@ static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc, in
             *crc = *crc * 9 + (S&0xffff) * 3 + ((unsigned)S>>16);
         }
     }
+
     bit = (S & s->and) | s->or;
-    return (((S + bit) << s->shift) - bit) << s->post_shift;
+    bit = (((S + bit) << s->shift) - bit);
+
+    if(s->hybrid)
+        bit = av_clip(bit, -s->hybrid_maxclip, s->hybrid_maxclip - 1);
+
+    return bit << s->post_shift;
 }
 
 static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
@@ -792,6 +798,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
     s->joint = s->frame_flags & WV_JOINT_STEREO;
     s->hybrid = s->frame_flags & WV_HYBRID_MODE;
     s->hybrid_bitrate = s->frame_flags & WV_HYBRID_BITRATE;
+    s->hybrid_maxclip = 1 << ((((s->frame_flags & 0x03) + 1) << 3) - 1);
     s->post_shift = 8 * (bpp-1-(s->frame_flags&0x03)) + ((s->frame_flags >> 13) & 0x1f);
     s->CRC = AV_RL32(buf); buf += 4;
     if(wc->mkv_mode)
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index edd4fe8197..c469594e34 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -113,13 +113,13 @@ static int xan_huffman_decode(unsigned char *dest, int dest_len,
 
     init_get_bits(&gb, ptr, ptr_len * 8);
 
-    while ( val != 0x16 ) {
+    while (val != 0x16) {
         unsigned idx = val - 0x17 + get_bits1(&gb) * byte;
         if (idx >= 2 * byte)
             return -1;
         val = src[idx];
 
-        if ( val < 0x16 ) {
+        if (val < 0x16) {
             if (dest >= dest_end)
                 return 0;
             *dest++ = val;
@@ -149,27 +149,23 @@ static void xan_unpack(unsigned char *dest, int dest_len,
 
         if (opcode < 0xe0) {
             int size2, back;
-            if ( (opcode & 0x80) == 0 ) {
-
+            if ((opcode & 0x80) == 0) {
                 size = opcode & 3;
 
                 back  = ((opcode & 0x60) << 3) + *src++ + 1;
                 size2 = ((opcode & 0x1c) >> 2) + 3;
-
-            } else if ( (opcode & 0x40) == 0 ) {
-
+            } else if ((opcode & 0x40) == 0) {
                 size = *src >> 6;
 
                 back  = (bytestream_get_be16(&src) & 0x3fff) + 1;
                 size2 = (opcode & 0x3f) + 4;
-
             } else {
-
                 size = opcode & 3;
 
                 back  = ((opcode & 0x10) << 12) + bytestream_get_be16(&src) + 1;
                 size2 = ((opcode & 0x0c) <<  6) + *src++ + 5;
             }
+
             if (dest_end - dest < size + size2 ||
                 dest + size - dest_org < back ||
                 src_end - src < size)
@@ -205,7 +201,7 @@ static inline void xan_wc3_output_pixel_run(XanContext *s,
     line_inc = stride - width;
     index = y * stride + x;
     current_x = x;
-    while(pixel_count && (index < s->frame_size)) {
+    while (pixel_count && index < s->frame_size) {
         int count = FFMIN(pixel_count, width - current_x);
         memcpy(palette_plane + index, pixel_buffer, count);
         pixel_count  -= count;
@@ -220,8 +216,9 @@ static inline void xan_wc3_output_pixel_run(XanContext *s,
     }
 }
 
-static inline void xan_wc3_copy_pixel_run(XanContext *s,
-    int x, int y, int pixel_count, int motion_x, int motion_y)
+static inline void xan_wc3_copy_pixel_run(XanContext *s, int x, int y,
+                                          int pixel_count, int motion_x,
+                                          int motion_y)
 {
     int stride;
     int line_inc;
@@ -230,8 +227,8 @@ static inline void xan_wc3_copy_pixel_run(XanContext *s,
     int width = s->avctx->width;
     unsigned char *palette_plane, *prev_palette_plane;
 
-    if ( y + motion_y < 0 || y + motion_y >= s->avctx->height ||
-         x + motion_x < 0 || x + motion_x >= s->avctx->width)
+    if (y + motion_y < 0 || y + motion_y >= s->avctx->height ||
+        x + motion_x < 0 || x + motion_x >= s->avctx->width)
         return;
 
     palette_plane = s->current_frame.data[0];
@@ -244,12 +241,14 @@ static inline void xan_wc3_copy_pixel_run(XanContext *s,
     curframe_x = x;
     prevframe_index = (y + motion_y) * stride + x + motion_x;
     prevframe_x = x + motion_x;
-    while(pixel_count &&
-          curframe_index  < s->frame_size &&
-          prevframe_index < s->frame_size) {
-        int count = FFMIN3(pixel_count, width - curframe_x, width - prevframe_x);
-
-        memcpy(palette_plane + curframe_index, prev_palette_plane + prevframe_index, count);
+    while (pixel_count &&
+           curframe_index  < s->frame_size &&
+           prevframe_index < s->frame_size) {
+        int count = FFMIN3(pixel_count, width - curframe_x,
+                           width - prevframe_x);
+
+        memcpy(palette_plane + curframe_index,
+               prev_palette_plane + prevframe_index, count);
         pixel_count     -= count;
         curframe_index  += count;
         prevframe_index += count;
@@ -270,7 +269,7 @@ static inline void xan_wc3_copy_pixel_run(XanContext *s,
 
 static int xan_wc3_decode_frame(XanContext *s) {
 
-    int width = s->avctx->width;
+    int width  = s->avctx->width;
     int height = s->avctx->height;
     int total_pixels = width * height;
     unsigned char opcode;
@@ -289,7 +288,8 @@ static int xan_wc3_decode_frame(XanContext *s) {
     const unsigned char *size_segment;
     const unsigned char *vector_segment;
     const unsigned char *imagedata_segment;
-    int huffman_offset, size_offset, vector_offset, imagedata_offset, imagedata_size;
+    int huffman_offset, size_offset, vector_offset, imagedata_offset,
+        imagedata_size;
 
     if (s->size < 8)
         return AVERROR_INVALIDDATA;
@@ -374,6 +374,7 @@ static int xan_wc3_decode_frame(XanContext *s) {
             size_segment += 3;
             break;
         }
+
         if (size > total_pixels)
             break;
 
@@ -518,7 +519,8 @@ static int xan_decode_frame(AVCodecContext *avctx,
                     return AVERROR_INVALIDDATA;
                 if (s->palettes_count >= PALETTES_MAX)
                     return AVERROR_INVALIDDATA;
-                tmpptr = av_realloc(s->palettes, (s->palettes_count + 1) * AVPALETTE_SIZE);
+                tmpptr = av_realloc(s->palettes,
+                                    (s->palettes_count + 1) * AVPALETTE_SIZE);
                 if (!tmpptr)
                     return AVERROR(ENOMEM);
                 s->palettes = tmpptr;
@@ -569,7 +571,8 @@ static int xan_decode_frame(AVCodecContext *avctx,
     if (!s->frame_size)
         s->frame_size = s->current_frame.linesize[0] * s->avctx->height;
 
-    memcpy(s->current_frame.data[1], s->palettes + s->cur_palette * AVPALETTE_COUNT, AVPALETTE_SIZE);
+    memcpy(s->current_frame.data[1],
+           s->palettes + s->cur_palette * AVPALETTE_COUNT, AVPALETTE_SIZE);
 
     s->buf = buf;
     s->size = buf_size;
@@ -617,5 +620,5 @@ AVCodec ff_xan_wc3_decoder = {
     .close          = xan_decode_end,
     .decode         = xan_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("Wing Commander III / Xan"),
+    .long_name      = NULL_IF_CONFIG_SMALL("Wing Commander III / Xan"),
 };
diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c
index 2eb12e8031..6f89c7e3ad 100644
--- a/libavcodec/zmbv.c
+++ b/libavcodec/zmbv.c
@@ -88,8 +88,8 @@ static int zmbv_decode_xor_8(ZmbvContext *c)
     output = c->cur;
     prev = c->prev;
 
-    if(c->flags & ZMBV_DELTAPAL){
-        for(i = 0; i < 768; i++)
+    if (c->flags & ZMBV_DELTAPAL) {
+        for (i = 0; i < 768; i++)
             c->pal[i] ^= *src++;
     }
 
@@ -97,9 +97,9 @@ static int zmbv_decode_xor_8(ZmbvContext *c)
     src += ((c->bx * c->by * 2 + 3) & ~3);
 
     block = 0;
-    for(y = 0; y < c->height; y += c->bh) {
+    for (y = 0; y < c->height; y += c->bh) {
         bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
-        for(x = 0; x < c->width; x += c->bw) {
+        for (x = 0; x < c->width; x += c->bw) {
             uint8_t *out, *tprev;
 
             d = mvec[block] & 1;
@@ -114,12 +114,12 @@ static int zmbv_decode_xor_8(ZmbvContext *c)
             tprev = prev + x + dx + dy * c->width;
             mx = x + dx;
             my = y + dy;
-            for(j = 0; j < bh2; j++){
-                if((my + j < 0) || (my + j >= c->height)) {
+            for (j = 0; j < bh2; j++) {
+                if (my + j < 0 || my + j >= c->height) {
                     memset(out, 0, bw2);
                 } else {
-                    for(i = 0; i < bw2; i++){
-                        if((mx + i < 0) || (mx + i >= c->width))
+                    for (i = 0; i < bw2; i++) {
+                        if (mx + i < 0 || mx + i >= c->width)
                             out[i] = 0;
                         else
                             out[i] = tprev[i];
@@ -129,10 +129,10 @@ static int zmbv_decode_xor_8(ZmbvContext *c)
                 tprev += c->width;
             }
 
-            if(d) { /* apply XOR'ed difference */
+            if (d) { /* apply XOR'ed difference */
                 out = output + x;
-                for(j = 0; j < bh2; j++){
-                    for(i = 0; i < bw2; i++)
+                for (j = 0; j < bh2; j++) {
+                    for (i = 0; i < bw2; i++)
                         out[i] ^= *src++;
                     out += c->width;
                 }
@@ -141,8 +141,9 @@ static int zmbv_decode_xor_8(ZmbvContext *c)
         output += c->width * c->bh;
         prev += c->width * c->bh;
     }
-    if(src - c->decomp_buf != c->decomp_len)
-        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n", src-c->decomp_buf, c->decomp_len);
+    if (src - c->decomp_buf != c->decomp_len)
+        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n",
+               src-c->decomp_buf, c->decomp_len);
     return 0;
 }
 
@@ -168,9 +169,9 @@ static int zmbv_decode_xor_16(ZmbvContext *c)
     src += ((c->bx * c->by * 2 + 3) & ~3);
 
     block = 0;
-    for(y = 0; y < c->height; y += c->bh) {
+    for (y = 0; y < c->height; y += c->bh) {
         bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
-        for(x = 0; x < c->width; x += c->bw) {
+        for (x = 0; x < c->width; x += c->bw) {
             uint16_t *out, *tprev;
 
             d = mvec[block] & 1;
@@ -185,12 +186,12 @@ static int zmbv_decode_xor_16(ZmbvContext *c)
             tprev = prev + x + dx + dy * c->width;
             mx = x + dx;
             my = y + dy;
-            for(j = 0; j < bh2; j++){
-                if((my + j < 0) || (my + j >= c->height)) {
+            for (j = 0; j < bh2; j++) {
+                if (my + j < 0 || my + j >= c->height) {
                     memset(out, 0, bw2 * 2);
                 } else {
-                    for(i = 0; i < bw2; i++){
-                        if((mx + i < 0) || (mx + i >= c->width))
+                    for (i = 0; i < bw2; i++) {
+                        if (mx + i < 0 || mx + i >= c->width)
                             out[i] = 0;
                         else
                             out[i] = tprev[i];
@@ -200,10 +201,10 @@ static int zmbv_decode_xor_16(ZmbvContext *c)
                 tprev += c->width;
             }
 
-            if(d) { /* apply XOR'ed difference */
+            if (d) { /* apply XOR'ed difference */
                 out = output + x;
-                for(j = 0; j < bh2; j++){
-                    for(i = 0; i < bw2; i++) {
+                for (j = 0; j < bh2; j++){
+                    for (i = 0; i < bw2; i++) {
                         out[i] ^= *((uint16_t*)src);
                         src += 2;
                     }
@@ -214,8 +215,9 @@ static int zmbv_decode_xor_16(ZmbvContext *c)
         output += c->width * c->bh;
         prev += c->width * c->bh;
     }
-    if(src - c->decomp_buf != c->decomp_len)
-        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n", src-c->decomp_buf, c->decomp_len);
+    if (src - c->decomp_buf != c->decomp_len)
+        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n",
+               src-c->decomp_buf, c->decomp_len);
     return 0;
 }
 
@@ -244,9 +246,9 @@ static int zmbv_decode_xor_24(ZmbvContext *c)
     src += ((c->bx * c->by * 2 + 3) & ~3);
 
     block = 0;
-    for(y = 0; y < c->height; y += c->bh) {
+    for (y = 0; y < c->height; y += c->bh) {
         bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
-        for(x = 0; x < c->width; x += c->bw) {
+        for (x = 0; x < c->width; x += c->bw) {
             uint8_t *out, *tprev;
 
             d = mvec[block] & 1;
@@ -261,12 +263,12 @@ static int zmbv_decode_xor_24(ZmbvContext *c)
             tprev = prev + (x + dx) * 3 + dy * stride;
             mx = x + dx;
             my = y + dy;
-            for(j = 0; j < bh2; j++){
-                if((my + j < 0) || (my + j >= c->height)) {
+            for (j = 0; j < bh2; j++) {
+                if (my + j < 0 || my + j >= c->height) {
                     memset(out, 0, bw2 * 3);
                 } else {
-                    for(i = 0; i < bw2; i++){
-                        if((mx + i < 0) || (mx + i >= c->width)) {
+                    for (i = 0; i < bw2; i++){
+                        if (mx + i < 0 || mx + i >= c->width) {
                             out[i * 3 + 0] = 0;
                             out[i * 3 + 1] = 0;
                             out[i * 3 + 2] = 0;
@@ -281,10 +283,10 @@ static int zmbv_decode_xor_24(ZmbvContext *c)
                 tprev += stride;
             }
 
-            if(d) { /* apply XOR'ed difference */
+            if (d) { /* apply XOR'ed difference */
                 out = output + x * 3;
-                for(j = 0; j < bh2; j++){
-                    for(i = 0; i < bw2; i++) {
+                for (j = 0; j < bh2; j++) {
+                    for (i = 0; i < bw2; i++) {
                         out[i * 3 + 0] ^= *src++;
                         out[i * 3 + 1] ^= *src++;
                         out[i * 3 + 2] ^= *src++;
@@ -296,8 +298,9 @@ static int zmbv_decode_xor_24(ZmbvContext *c)
         output += stride * c->bh;
         prev += stride * c->bh;
     }
-    if(src - c->decomp_buf != c->decomp_len)
-        av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n", src-c->decomp_buf, c->decomp_len);
+    if (src - c->decomp_buf != c->decomp_len)
+        av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n",
+               src-c->decomp_buf, c->decomp_len);
     return 0;
 }
 #endif //ZMBV_ENABLE_24BPP
@@ -324,9 +327,9 @@ static int zmbv_decode_xor_32(ZmbvContext *c)
     src += ((c->bx * c->by * 2 + 3) & ~3);
 
     block = 0;
-    for(y = 0; y < c->height; y += c->bh) {
+    for (y = 0; y < c->height; y += c->bh) {
         bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
-        for(x = 0; x < c->width; x += c->bw) {
+        for (x = 0; x < c->width; x += c->bw) {
             uint32_t *out, *tprev;
 
             d = mvec[block] & 1;
@@ -341,12 +344,12 @@ static int zmbv_decode_xor_32(ZmbvContext *c)
             tprev = prev + x + dx + dy * c->width;
             mx = x + dx;
             my = y + dy;
-            for(j = 0; j < bh2; j++){
-                if((my + j < 0) || (my + j >= c->height)) {
+            for (j = 0; j < bh2; j++) {
+                if (my + j < 0 || my + j >= c->height) {
                     memset(out, 0, bw2 * 4);
                 } else {
-                    for(i = 0; i < bw2; i++){
-                        if((mx + i < 0) || (mx + i >= c->width))
+                    for (i = 0; i < bw2; i++){
+                        if (mx + i < 0 || mx + i >= c->width)
                             out[i] = 0;
                         else
                             out[i] = tprev[i];
@@ -356,11 +359,11 @@ static int zmbv_decode_xor_32(ZmbvContext *c)
                 tprev += c->width;
             }
 
-            if(d) { /* apply XOR'ed difference */
+            if (d) { /* apply XOR'ed difference */
                 out = output + x;
-                for(j = 0; j < bh2; j++){
-                    for(i = 0; i < bw2; i++) {
-                        out[i] ^= *((uint32_t*)src);
+                for (j = 0; j < bh2; j++){
+                    for (i = 0; i < bw2; i++) {
+                        out[i] ^= *((uint32_t *) src);
                         src += 4;
                     }
                     out += c->width;
@@ -368,10 +371,11 @@ static int zmbv_decode_xor_32(ZmbvContext *c)
             }
         }
         output += c->width * c->bh;
-        prev += c->width * c->bh;
+        prev   += c->width * c->bh;
     }
-    if(src - c->decomp_buf != c->decomp_len)
-        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n", src-c->decomp_buf, c->decomp_len);
+    if (src - c->decomp_buf != c->decomp_len)
+        av_log(c->avctx, AV_LOG_ERROR, "Used %ti of %i bytes\n",
+               src-c->decomp_buf, c->decomp_len);
     return 0;
 }
 
@@ -401,12 +405,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     int len = buf_size;
     int hi_ver, lo_ver;
 
-    if(c->pic.data[0])
+    if (c->pic.data[0])
             avctx->release_buffer(avctx, &c->pic);
 
     c->pic.reference = 3;
     c->pic.buffer_hints = FF_BUFFER_HINTS_VALID;
-    if(avctx->get_buffer(avctx, &c->pic) < 0){
+    if (avctx->get_buffer(avctx, &c->pic) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
@@ -414,7 +418,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     /* parse header */
     c->flags = buf[0];
     buf++; len--;
-    if(c->flags & ZMBV_KEYFRAME) {
+    if (c->flags & ZMBV_KEYFRAME) {
         void *decode_intra = NULL;
         c->decode_intra= NULL;
         hi_ver = buf[0];
@@ -426,21 +430,26 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
 
         buf += 6;
         len -= 6;
-        av_log(avctx, AV_LOG_DEBUG, "Flags=%X ver=%i.%i comp=%i fmt=%i blk=%ix%i\n",c->flags,hi_ver,lo_ver,c->comp,c->fmt,c->bw,c->bh);
-        if(hi_ver != 0 || lo_ver != 1) {
-            av_log(avctx, AV_LOG_ERROR, "Unsupported version %i.%i\n", hi_ver, lo_ver);
+        av_log(avctx, AV_LOG_DEBUG,
+               "Flags=%X ver=%i.%i comp=%i fmt=%i blk=%ix%i\n",
+               c->flags,hi_ver,lo_ver,c->comp,c->fmt,c->bw,c->bh);
+        if (hi_ver != 0 || lo_ver != 1) {
+            av_log(avctx, AV_LOG_ERROR, "Unsupported version %i.%i\n",
+            hi_ver, lo_ver);
             return -1;
         }
-        if(c->bw == 0 || c->bh == 0) {
-            av_log(avctx, AV_LOG_ERROR, "Unsupported block size %ix%i\n", c->bw, c->bh);
+        if (c->bw == 0 || c->bh == 0) {
+            av_log(avctx, AV_LOG_ERROR, "Unsupported block size %ix%i\n",
+                   c->bw, c->bh);
             return -1;
         }
-        if(c->comp != 0 && c->comp != 1) {
-            av_log(avctx, AV_LOG_ERROR, "Unsupported compression type %i\n", c->comp);
+        if (c->comp != 0 && c->comp != 1) {
+            av_log(avctx, AV_LOG_ERROR, "Unsupported compression type %i\n",
+                   c->comp);
             return -1;
         }
 
-        switch(c->fmt) {
+        switch (c->fmt) {
         case ZMBV_FMT_8BPP:
             c->bpp = 8;
             decode_intra = zmbv_decode_intra;
@@ -466,7 +475,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             break;
         default:
             c->decode_xor = NULL;
-            av_log(avctx, AV_LOG_ERROR, "Unsupported (for now) format %i\n", c->fmt);
+            av_log(avctx, AV_LOG_ERROR,
+                   "Unsupported (for now) format %i\n", c->fmt);
             return -1;
         }
 
@@ -476,21 +486,21 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             return -1;
         }
 
-        c->cur = av_realloc_f(c->cur, avctx->width * avctx->height,  (c->bpp / 8));
+        c->cur  = av_realloc_f(c->cur, avctx->width * avctx->height,  (c->bpp / 8));
         c->prev = av_realloc_f(c->prev, avctx->width * avctx->height,  (c->bpp / 8));
         c->bx = (c->width + c->bw - 1) / c->bw;
         c->by = (c->height+ c->bh - 1) / c->bh;
-        if(!c->cur || !c->prev)
+        if (!c->cur || !c->prev)
             return -1;
         c->decode_intra= decode_intra;
     }
 
-    if(c->decode_intra == NULL) {
+    if (c->decode_intra == NULL) {
         av_log(avctx, AV_LOG_ERROR, "Error! Got no format or no keyframe!\n");
         return -1;
     }
 
-    if(c->comp == 0) { //Uncompressed data
+    if (c->comp == 0) { //Uncompressed data
         memcpy(c->decomp_buf, buf, len);
         c->decomp_size = 1;
     } else { // ZLIB-compressed data
@@ -502,14 +512,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
         inflate(&c->zstream, Z_FINISH);
         c->decomp_len = c->zstream.total_out;
     }
-    if(c->flags & ZMBV_KEYFRAME) {
+    if (c->flags & ZMBV_KEYFRAME) {
         c->pic.key_frame = 1;
         c->pic.pict_type = AV_PICTURE_TYPE_I;
         c->decode_intra(c);
     } else {
         c->pic.key_frame = 0;
         c->pic.pict_type = AV_PICTURE_TYPE_P;
-        if(c->decomp_len)
+        if (c->decomp_len)
             c->decode_xor(c);
     }
 
@@ -520,10 +530,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
 
         out = c->pic.data[0];
         src = c->cur;
-        switch(c->fmt) {
+        switch (c->fmt) {
         case ZMBV_FMT_8BPP:
-            for(j = 0; j < c->height; j++) {
-                for(i = 0; i < c->width; i++) {
+            for (j = 0; j < c->height; j++) {
+                for (i = 0; i < c->width; i++) {
                     out[i * 3 + 0] = c->pal[(*src) * 3 + 0];
                     out[i * 3 + 1] = c->pal[(*src) * 3 + 1];
                     out[i * 3 + 2] = c->pal[(*src) * 3 + 2];
@@ -533,8 +543,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             }
             break;
         case ZMBV_FMT_15BPP:
-            for(j = 0; j < c->height; j++) {
-                for(i = 0; i < c->width; i++) {
+            for (j = 0; j < c->height; j++) {
+                for (i = 0; i < c->width; i++) {
                     uint16_t tmp = AV_RL16(src);
                     src += 2;
                     out[i * 3 + 0] = (tmp & 0x7C00) >> 7;
@@ -545,8 +555,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             }
             break;
         case ZMBV_FMT_16BPP:
-            for(j = 0; j < c->height; j++) {
-                for(i = 0; i < c->width; i++) {
+            for (j = 0; j < c->height; j++) {
+                for (i = 0; i < c->width; i++) {
                     uint16_t tmp = AV_RL16(src);
                     src += 2;
                     out[i * 3 + 0] = (tmp & 0xF800) >> 8;
@@ -558,7 +568,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             break;
 #ifdef ZMBV_ENABLE_24BPP
         case ZMBV_FMT_24BPP:
-            for(j = 0; j < c->height; j++) {
+            for (j = 0; j < c->height; j++) {
                 memcpy(out, src, c->width * 3);
                 src += c->width * 3;
                 out += c->pic.linesize[0];
@@ -566,8 +576,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
             break;
 #endif //ZMBV_ENABLE_24BPP
         case ZMBV_FMT_32BPP:
-            for(j = 0; j < c->height; j++) {
-                for(i = 0; i < c->width; i++) {
+            for (j = 0; j < c->height; j++) {
+                for (i = 0; i < c->width; i++) {
                     uint32_t tmp = AV_RL32(src);
                     src += 4;
                     AV_WB24(out+(i*3), tmp);
@@ -616,7 +626,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
     /* Allocate decompression buffer */
     if (c->decomp_size) {
         if ((c->decomp_buf = av_malloc(c->decomp_size)) == NULL) {
-            av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
+            av_log(avctx, AV_LOG_ERROR,
+                   "Can't allocate decompression buffer.\n");
             return 1;
         }
     }