diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2010-01-07 23:53:49 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2010-01-07 23:53:49 +0000 |
| commit | ca334dd14b957c4af7fcab5e97b6ed675c97caad (patch) | |
| tree | dd6bfecae0337a32bf00ca80a08dd33d2a8299f8 /libavcodec/h263.c | |
| parent | 84f0aba18dc8815c5cd408238909e4dc8b60684f (diff) | |
Split the mpeg4 encoder and decoder off h263.c
Originally committed as revision 21079 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h263.c')
| -rw-r--r-- | libavcodec/h263.c | 3742 |
1 files changed, 15 insertions, 3727 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c index 9040e3d43a..e3a3f29b02 100644 --- a/libavcodec/h263.c +++ b/libavcodec/h263.c @@ -37,11 +37,12 @@ #include "dsputil.h" #include "avcodec.h" #include "mpegvideo.h" +#include "h263.h" #include "h263data.h" -#include "mpeg4data.h" #include "mathops.h" #include "unary.h" #include "flv.h" +#include "mpeg4video.h" //#undef NDEBUG //#include <assert.h> @@ -50,26 +51,12 @@ // reading vlc values. Changing these may improve speed and data cache needs // be aware though that decreasing them may need the number of stages that is // passed to get_vlc* to be increased. -#define INTRA_MCBPC_VLC_BITS 6 -#define INTER_MCBPC_VLC_BITS 7 -#define CBPY_VLC_BITS 6 #define MV_VLC_BITS 9 -#define DC_VLC_BITS 9 -#define SPRITE_TRAJ_VLC_BITS 6 -#define MB_TYPE_B_VLC_BITS 4 -#define TEX_VLC_BITS 9 #define H263_MBTYPE_B_VLC_BITS 6 #define CBPC_B_VLC_BITS 3 -#if CONFIG_ENCODERS -//The uni_DCtab_* tables below contain unified bits+length tables to encode DC -//differences in mpeg4. Unified in the sense that the specification specifies -//this encoding in several steps. -static uint8_t uni_DCtab_lum_len[512]; -static uint8_t uni_DCtab_chrom_len[512]; -static uint16_t uni_DCtab_lum_bits[512]; -static uint16_t uni_DCtab_chrom_bits[512]; +#if CONFIG_ENCODERS /** * Table of number of bits a motion vector component needs. */ @@ -88,34 +75,16 @@ static uint8_t umv_fcode_tab[MAX_MV*2+1]; //unified encoding tables for run length encoding of coefficients //unified in the sense that the specification specifies the encoding in several steps. -static uint32_t uni_mpeg4_intra_rl_bits[64*64*2*2]; -static uint8_t uni_mpeg4_intra_rl_len [64*64*2*2]; -static uint32_t uni_mpeg4_inter_rl_bits[64*64*2*2]; -static uint8_t uni_mpeg4_inter_rl_len [64*64*2*2]; static uint8_t uni_h263_intra_aic_rl_len [64*64*2*2]; static uint8_t uni_h263_inter_rl_len [64*64*2*2]; //#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level)) //#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64) #define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level)) -/* mpeg4 -inter -max level: 24/6 -max run: 53/63 - -intra -max level: 53/16 -max run: 29/41 -*/ #endif -static uint8_t static_rl_table_store[5][2][2*MAX_RUN + MAX_LEVEL + 3]; +static uint8_t static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3]; -#if 0 //3IV1 is quite rare and it slows things down a tiny bit -#define IS_3IV1 s->codec_tag == AV_RL32("3IV1") -#else -#define IS_3IV1 0 -#endif int h263_get_picture_format(int width, int height) { @@ -159,13 +128,13 @@ void ff_h263_show_pict_info(MpegEncContext *s){ * This may be one of the standard aspect ratios or it specifies * that the aspect will be stored explicitly later. */ -static av_const int aspect_to_info(AVRational aspect){ +av_const int ff_h263_aspect_to_info(AVRational aspect){ int i; if(aspect.num==0) aspect= (AVRational){1,1}; for(i=1; i<6; i++){ - if(av_cmp_q(pixel_aspect[i], aspect) == 0){ + if(av_cmp_q(ff_h263_pixel_aspect[i], aspect) == 0){ return i; } } @@ -265,7 +234,7 @@ void h263_encode_picture_header(MpegEncContext * s, int picture_number) if (format == 7) { /* Custom Picture Format (CPFMT) */ - s->aspect_ratio_info= aspect_to_info(s->avctx->sample_aspect_ratio); + s->aspect_ratio_info= ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio); put_bits(&s->pb,4,s->aspect_ratio_info); put_bits(&s->pb,9,(s->width >> 2) - 1); @@ -342,149 +311,6 @@ void h263_encode_gob_header(MpegEncContext * s, int mb_line) } /** - * Returns the number of bits that encoding the 8x8 block in block would need. - * @param[in] block_last_index last index in scantable order that refers to a non zero element in block. - */ -static inline int get_block_rate(MpegEncContext * s, DCTELEM block[64], int block_last_index, uint8_t scantable[64]){ - int last=0; - int j; - int rate=0; - - for(j=1; j<=block_last_index; j++){ - const int index= scantable[j]; - int level= block[index]; - if(level){ - level+= 64; - if((level&(~127)) == 0){ - if(j<block_last_index) rate+= s->intra_ac_vlc_length [UNI_AC_ENC_INDEX(j-last-1, level)]; - else rate+= s->intra_ac_vlc_last_length[UNI_AC_ENC_INDEX(j-last-1, level)]; - }else - rate += s->ac_esc_length; - - last= j; - } - } - - return rate; -} - - -/** - * Restores the ac coefficients in block that have been changed by decide_ac_pred(). - * This function also restores s->block_last_index. - * @param[in,out] block MB coefficients, these will be restored - * @param[in] dir ac prediction direction for each 8x8 block - * @param[out] st scantable for each 8x8 block - * @param[in] zigzag_last_index index refering to the last non zero coefficient in zigzag order - */ -static inline void restore_ac_coeffs(MpegEncContext * s, DCTELEM block[6][64], const int dir[6], uint8_t *st[6], const int zigzag_last_index[6]) -{ - int i, n; - memcpy(s->block_last_index, zigzag_last_index, sizeof(int)*6); - - for(n=0; n<6; n++){ - int16_t *ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - - st[n]= s->intra_scantable.permutated; - if(dir[n]){ - /* top prediction */ - for(i=1; i<8; i++){ - block[n][s->dsp.idct_permutation[i ]] = ac_val[i+8]; - } - }else{ - /* left prediction */ - for(i=1; i<8; i++){ - block[n][s->dsp.idct_permutation[i<<3]]= ac_val[i ]; - } - } - } -} - -/** - * Returns the optimal value (0 or 1) for the ac_pred element for the given MB in mpeg4. - * This function will also update s->block_last_index and s->ac_val. - * @param[in,out] block MB coefficients, these will be updated if 1 is returned - * @param[in] dir ac prediction direction for each 8x8 block - * @param[out] st scantable for each 8x8 block - * @param[out] zigzag_last_index index refering to the last non zero coefficient in zigzag order - */ -static inline int decide_ac_pred(MpegEncContext * s, DCTELEM block[6][64], const int dir[6], uint8_t *st[6], int zigzag_last_index[6]) -{ - int score= 0; - int i, n; - int8_t * const qscale_table= s->current_picture.qscale_table; - - memcpy(zigzag_last_index, s->block_last_index, sizeof(int)*6); - - for(n=0; n<6; n++){ - int16_t *ac_val, *ac_val1; - - score -= get_block_rate(s, block[n], s->block_last_index[n], s->intra_scantable.permutated); - - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val1= ac_val; - if(dir[n]){ - const int xy= s->mb_x + s->mb_y*s->mb_stride - s->mb_stride; - /* top prediction */ - ac_val-= s->block_wrap[n]*16; - if(s->mb_y==0 || s->qscale == qscale_table[xy] || n==2 || n==3){ - /* same qscale */ - for(i=1; i<8; i++){ - const int level= block[n][s->dsp.idct_permutation[i ]]; - block[n][s->dsp.idct_permutation[i ]] = level - ac_val[i+8]; - ac_val1[i ]= block[n][s->dsp.idct_permutation[i<<3]]; - ac_val1[i+8]= level; - } - }else{ - /* different qscale, we must rescale */ - for(i=1; i<8; i++){ - const int level= block[n][s->dsp.idct_permutation[i ]]; - block[n][s->dsp.idct_permutation[i ]] = level - ROUNDED_DIV(ac_val[i + 8]*qscale_table[xy], s->qscale); - ac_val1[i ]= block[n][s->dsp.idct_permutation[i<<3]]; - ac_val1[i+8]= level; - } - } - st[n]= s->intra_h_scantable.permutated; - }else{ - const int xy= s->mb_x-1 + s->mb_y*s->mb_stride; - /* left prediction */ - ac_val-= 16; - if(s->mb_x==0 || s->qscale == qscale_table[xy] || n==1 || n==3){ - /* same qscale */ - for(i=1; i<8; i++){ - const int level= block[n][s->dsp.idct_permutation[i<<3]]; - block[n][s->dsp.idct_permutation[i<<3]]= level - ac_val[i]; - ac_val1[i ]= level; - ac_val1[i+8]= block[n][s->dsp.idct_permutation[i ]]; - } - }else{ - /* different qscale, we must rescale */ - for(i=1; i<8; i++){ - const int level= block[n][s->dsp.idct_permutation[i<<3]]; - block[n][s->dsp.idct_permutation[i<<3]]= level - ROUNDED_DIV(ac_val[i]*qscale_table[xy], s->qscale); - ac_val1[i ]= level; - ac_val1[i+8]= block[n][s->dsp.idct_permutation[i ]]; - } - } - st[n]= s->intra_v_scantable.permutated; - } - - for(i=63; i>0; i--) //FIXME optimize - if(block[n][ st[n][i] ]) break; - s->block_last_index[n]= i; - - score += get_block_rate(s, block[n], s->block_last_index[n], st[n]); - } - - if(score < 0){ - return 1; - }else{ - restore_ac_coeffs(s, block, dir, st, zigzag_last_index); - return 0; - } -} - -/** * modify qscale so that encoding is acually possible in h263 (limit difference to -2..2) */ void ff_clean_h263_qscales(MpegEncContext *s){ @@ -513,49 +339,12 @@ void ff_clean_h263_qscales(MpegEncContext *s){ } } -/** - * modify mb_type & qscale so that encoding is acually possible in mpeg4 - */ -void ff_clean_mpeg4_qscales(MpegEncContext *s){ - int i; - int8_t * const qscale_table= s->current_picture.qscale_table; - - ff_clean_h263_qscales(s); - - if(s->pict_type== FF_B_TYPE){ - int odd=0; - /* ok, come on, this isn't funny anymore, there's more code for handling this mpeg4 mess than for the actual adaptive quantization */ - - for(i=0; i<s->mb_num; i++){ - int mb_xy= s->mb_index2xy[i]; - odd += qscale_table[mb_xy]&1; - } - - if(2*odd > s->mb_num) odd=1; - else odd=0; - - for(i=0; i<s->mb_num; i++){ - int mb_xy= s->mb_index2xy[i]; - if((qscale_table[mb_xy]&1) != odd) - qscale_table[mb_xy]++; - if(qscale_table[mb_xy] > 31) - qscale_table[mb_xy]= 31; - } - - for(i=1; i<s->mb_num; i++){ - int mb_xy= s->mb_index2xy[i]; - if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_DIRECT)){ - s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_BIDIR; - } - } - } -} - #endif //CONFIG_ENCODERS #define tab_size ((signed)FF_ARRAY_ELEMS(s->direct_scale_mv[0])) #define tab_bias (tab_size/2) +//used by mpeg4 and rv10 decoder void ff_mpeg4_init_direct_mv(MpegEncContext *s){ int i; for(i=0; i<tab_size; i++){ @@ -702,828 +491,10 @@ void ff_h263_update_motion_val(MpegEncContext * s){ } } -/** - * predicts the dc. - * encoding quantized level -> quantized diff - * decoding quantized diff -> quantized level - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir_ptr pointer to an integer where the prediction direction will be stored - */ -static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding) -{ - int a, b, c, wrap, pred, scale, ret; - int16_t *dc_val; - - /* find prediction */ - if (n < 4) { - scale = s->y_dc_scale; - } else { - scale = s->c_dc_scale; - } - if(IS_3IV1) - scale= 8; - - wrap= s->block_wrap[n]; - dc_val = s->dc_val[0] + s->block_index[n]; - - /* B C - * A X - */ - a = dc_val[ - 1]; - b = dc_val[ - 1 - wrap]; - c = dc_val[ - wrap]; - - /* outside slice handling (we can't do that by memset as we need the dc for error resilience) */ - if(s->first_slice_line && n!=3){ - if(n!=2) b=c= 1024; - if(n!=1 && s->mb_x == s->resync_mb_x) b=a= 1024; - } - if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1){ - if(n==0 || n==4 || n==5) - b=1024; - } - - if (abs(a - b) < abs(b - c)) { - pred = c; - *dir_ptr = 1; /* top */ - } else { - pred = a; - *dir_ptr = 0; /* left */ - } - /* we assume pred is positive */ - pred = FASTDIV((pred + (scale >> 1)), scale); - - if(encoding){ - ret = level - pred; - }else{ - level += pred; - ret= level; - if(s->error_recognition>=3){ - if(level<0){ - av_log(s->avctx, AV_LOG_ERROR, "dc<0 at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - if(level*scale > 2048 + scale){ - av_log(s->avctx, AV_LOG_ERROR, "dc overflow at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - } - } - level *=scale; - if(level&(~2047)){ - if(level<0) - level=0; - else if(!(s->workaround_bugs&FF_BUG_DC_CLIP)) - level=2047; - } - dc_val[0]= level; - - return ret; -} - #if CONFIG_ENCODERS -/** - * encodes the dc value. - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n) -{ -#if 1 - level+=256; - if (n < 4) { - /* luminance */ - put_bits(s, uni_DCtab_lum_len[level], uni_DCtab_lum_bits[level]); - } else { - /* chrominance */ - put_bits(s, uni_DCtab_chrom_len[level], uni_DCtab_chrom_bits[level]); - } -#else - int size, v; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (n < 4) { - /* luminance */ - put_bits(&s->pb, DCtab_lum[size][1], DCtab_lum[size][0]); - } else { - /* chrominance */ - put_bits(&s->pb, DCtab_chrom[size][1], DCtab_chrom[size][0]); - } - - /* encode remaining bits */ - if (size > 0) { - if (level < 0) - level = (-level) ^ ((1 << size) - 1); - put_bits(&s->pb, size, level); - if (size > 8) - put_bits(&s->pb, 1, 1); - } -#endif -} - -static inline int mpeg4_get_dc_length(int level, int n){ - if (n < 4) { - return uni_DCtab_lum_len[level + 256]; - } else { - return uni_DCtab_chrom_len[level + 256]; - } -} - -/** - * encodes a 8x8 block - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, - uint8_t *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb) -{ - int i, last_non_zero; -#if 0 //variables for the outcommented version - int code, sign, last; -#endif - const RLTable *rl; - uint32_t *bits_tab; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - - if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - mpeg4_encode_dc(dc_pb, intra_dc, n); - if(last_index<1) return; - i = 1; - rl = &rl_intra; - bits_tab= uni_mpeg4_intra_rl_bits; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if(last_index<0) return; - i = 0; - rl = &rl_inter; - bits_tab= uni_mpeg4_inter_rl_bits; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; -#if 1 - for (; i < last_index; i++) { - int level = block[ scan_table[i] ]; - if (level) { - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(0, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - }else{ //ESC3 - put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); - } - last_non_zero = i; - } - } - /*if(i<=last_index)*/{ - int level = block[ scan_table[i] ]; - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(1, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - }else{ //ESC3 - put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); - } - } -#else - for (; i <= last_index; i++) { - const int slevel = block[ scan_table[i] ]; - if (slevel) { - int level; - int run = i - last_non_zero - 1; - last = (i == last_index); - sign = 0; - level = slevel; - if (level < 0) { - sign = 1; - level = -level; - } - code = get_rl_index(rl, last, run, level); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - if (code == rl->n) { - int level1, run1; - level1 = level - rl->max_level[last][run]; - if (level1 < 1) - goto esc2; - code = get_rl_index(rl, last, run, level1); - if (code == rl->n) { - esc2: - put_bits(ac_pb, 1, 1); - if (level > MAX_LEVEL) - goto esc3; - run1 = run - rl->max_run[last][level] - 1; - if (run1 < 0) - goto esc3; - code = get_rl_index(rl, last, run1, level); - if (code == rl->n) { - esc3: - /* third escape */ - put_bits(ac_pb, 1, 1); - put_bits(ac_pb, 1, last); - put_bits(ac_pb, 6, run); - put_bits(ac_pb, 1, 1); - put_sbits(ac_pb, 12, slevel); - put_bits(ac_pb, 1, 1); - } else { - /* second escape */ - put_bits(ac_pb, 1, 0); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(ac_pb, 1, sign); - } - } else { - /* first escape */ - put_bits(ac_pb, 1, 0); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(ac_pb, 1, sign); - } - } else { - put_bits(ac_pb, 1, sign); - } - last_non_zero = i; - } - } -#endif -} - -static int mpeg4_get_block_length(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, - uint8_t *scan_table) -{ - int i, last_non_zero; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - int len=0; - - if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - len += mpeg4_get_dc_length(intra_dc, n); - if(last_index<1) return len; - i = 1; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if(last_index<0) return 0; - i = 0; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; - for (; i < last_index; i++) { - int level = block[ scan_table[i] ]; - if (level) { - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(0, run, level); - len += len_tab[index]; - }else{ //ESC3 - len += 7+2+1+6+1+12+1; - } - last_non_zero = i; - } - } - /*if(i<=last_index)*/{ - int level = block[ scan_table[i] ]; - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(1, run, level); - len += len_tab[index]; - }else{ //ESC3 - len += 7+2+1+6+1+12+1; - } - } - - return len; -} - -static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){ - int l, bit_size, code; - - if (val == 0) { - return mvtab[0][1]; - } else { - bit_size = f_code - 1; - /* modulo encoding */ - l= INT_BIT - 6 - bit_size; - val = (val<<l)>>l; - val--; - code = (val >> bit_size) + 1; - - return mvtab[code][1] + 1 + bit_size; - } -} - -static inline void ff_h263_encode_motion_vector(MpegEncContext * s, int x, int y, int f_code){ - if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){ - skip_put_bits(&s->pb, - h263_get_motion_length(s, x, f_code) - +h263_get_motion_length(s, y, f_code)); - }else{ - ff_h263_encode_motion(s, x, f_code); - ff_h263_encode_motion(s, y, f_code); - } -} - -static inline int get_p_cbp(MpegEncContext * s, - DCTELEM block[6][64], - int motion_x, int motion_y){ - int cbp, i; - - if(s->flags & CODEC_FLAG_CBP_RD){ - int best_cbpy_score= INT_MAX; - int best_cbpc_score= INT_MAX; - int cbpc = (-1), cbpy= (-1); - const int offset= (s->mv_type==MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0); - const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6); - - for(i=0; i<4; i++){ - int score= inter_MCBPC_bits[i + offset] * lambda; - if(i&1) score += s->coded_score[5]; - if(i&2) score += s->coded_score[4]; - - if(score < best_cbpc_score){ - best_cbpc_score= score; - cbpc= i; - } - } - - for(i=0; i<16; i++){ - int score= cbpy_tab[i ^ 0xF][1] * lambda; - if(i&1) score += s->coded_score[3]; - if(i&2) score += s->coded_score[2]; - if(i&4) score += s->coded_score[1]; - if(i&8) score += s->coded_score[0]; - - if(score < best_cbpy_score){ - best_cbpy_score= score; - cbpy= i; - } - } - cbp= cbpc + 4*cbpy; - if ((motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16){ - if(best_cbpy_score + best_cbpc_score + 2*lambda >= 0) - cbp= 0; - } - - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){ - s->block_last_index[i]= -1; - s->dsp.clear_block(s->block[i]); - } - } - }else{ - cbp= 0; - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0) - cbp |= 1 << (5 - i); - } - } - return cbp; -} - -static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64], - int motion_x, int motion_y, int mb_type){ - int cbp=0, i; - - if(s->flags & CODEC_FLAG_CBP_RD){ - int score=0; - const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6); - - for(i=0; i<6; i++){ - if(s->coded_score[i] < 0){ - score += s->coded_score[i]; - cbp |= 1 << (5 - i); - } - } - - if(cbp){ - int zero_score= -6; - if ((motion_x | motion_y | s->dquant | mb_type) == 0){ - zero_score-= 4; //2*MV + mb_type + cbp bit - } - - zero_score*= lambda; - if(zero_score <= score){ - cbp=0; - } - } - - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){ - s->block_last_index[i]= -1; - s->dsp.clear_block(s->block[i]); - } - } - }else{ - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0) - cbp |= 1 << (5 - i); - } - } - return cbp; -} - -static inline void mpeg4_encode_blocks(MpegEncContext * s, DCTELEM block[6][64], int intra_dc[6], - uint8_t **scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb){ - int i; - - if(scan_table){ - if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){ - for (i = 0; i < 6; i++) { - skip_put_bits(&s->pb, mpeg4_get_block_length(s, block[i], i, intra_dc[i], scan_table[i])); - } - }else{ - /* encode each block */ - for (i = 0; i < 6; i++) { - mpeg4_encode_block(s, block[i], i, intra_dc[i], scan_table[i], dc_pb, ac_pb); - } - } - }else{ - if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){ - for (i = 0; i < 6; i++) { - skip_put_bits(&s->pb, mpeg4_get_block_length(s, block[i], i, 0, s->intra_scantable.permutated)); - } - }else{ - /* encode each block */ - for (i = 0; i < 6; i++) { - mpeg4_encode_block(s, block[i], i, 0, s->intra_scantable.permutated, dc_pb, ac_pb); - } - } - } -} - static const int dquant_code[5]= {1,0,9,2,3}; -void mpeg4_encode_mb(MpegEncContext * s, - DCTELEM block[6][64], - int motion_x, int motion_y) -{ - int cbpc, cbpy, pred_x, pred_y; - PutBitContext * const pb2 = s->data_partitioning ? &s->pb2 : &s->pb; - PutBitContext * const tex_pb = s->data_partitioning && s->pict_type!=FF_B_TYPE ? &s->tex_pb : &s->pb; - PutBitContext * const dc_pb = s->data_partitioning && s->pict_type!=FF_I_TYPE ? &s->pb2 : &s->pb; - const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1) && !s->data_partitioning ? 1 : 0; - - if (!s->mb_intra) { - int i, cbp; - - if(s->pict_type==FF_B_TYPE){ - static const int mb_type_table[8]= {-1, 3, 2, 1,-1,-1,-1, 0}; /* convert from mv_dir to type */ - int mb_type= mb_type_table[s->mv_dir]; - - if(s->mb_x==0){ - for(i=0; i<2; i++){ - s->last_mv[i][0][0]= - s->last_mv[i][0][1]= - s->last_mv[i][1][0]= - s->last_mv[i][1][1]= 0; - } - } - - assert(s->dquant>=-2 && s->dquant<=2); - assert((s->dquant&1)==0); - assert(mb_type>=0); - - /* nothing to do if this MB was skipped in the next P Frame */ - if(s->next_picture.mbskip_table[s->mb_y * s->mb_stride + s->mb_x]){ //FIXME avoid DCT & ... - s->skip_count++; - s->mv[0][0][0]= - s->mv[0][0][1]= - s->mv[1][0][0]= - s->mv[1][0][1]= 0; - s->mv_dir= MV_DIR_FORWARD; //doesn't matter - s->qscale -= s->dquant; -// s->mb_skipped=1; - - return; - } - - cbp= get_b_cbp(s, block, motion_x, motion_y, mb_type); - - if ((cbp | motion_x | motion_y | mb_type) ==0) { - /* direct MB with MV={0,0} */ - assert(s->dquant==0); - - put_bits(&s->pb, 1, 1); /* mb not coded modb1=1 */ - - if(interleaved_stats){ - s->misc_bits++; - s->last_bits++; - } - s->skip_count++; - return; - } - - put_bits(&s->pb, 1, 0); /* mb coded modb1=0 */ - put_bits(&s->pb, 1, cbp ? 0 : 1); /* modb2 */ //FIXME merge - put_bits(&s->pb, mb_type+1, 1); // this table is so simple that we don't need it :) - if(cbp) put_bits(&s->pb, 6, cbp); - - if(cbp && mb_type){ - if(s->dquant) - put_bits(&s->pb, 2, (s->dquant>>2)+3); - else - put_bits(&s->pb, 1, 0); - }else - s->qscale -= s->dquant; - - if(!s->progressive_sequence){ - if(cbp) - put_bits(&s->pb, 1, s->interlaced_dct); - if(mb_type) // not direct mode - put_bits(&s->pb, 1, s->mv_type == MV_TYPE_FIELD); - } - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - if(mb_type == 0){ - assert(s->mv_dir & MV_DIRECT); - ff_h263_encode_motion_vector(s, motion_x, motion_y, 1); - s->b_count++; - s->f_count++; - }else{ - assert(mb_type > 0 && mb_type < 4); - if(s->mv_type != MV_TYPE_FIELD){ - if(s->mv_dir & MV_DIR_FORWARD){ - ff_h263_encode_motion_vector(s, s->mv[0][0][0] - s->last_mv[0][0][0], - s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code); - s->last_mv[0][0][0]= s->last_mv[0][1][0]= s->mv[0][0][0]; - s->last_mv[0][0][1]= s->last_mv[0][1][1]= s->mv[0][0][1]; - s->f_count++; - } - if(s->mv_dir & MV_DIR_BACKWARD){ - ff_h263_encode_motion_vector(s, s->mv[1][0][0] - s->last_mv[1][0][0], - s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code); - s->last_mv[1][0][0]= s->last_mv[1][1][0]= s->mv[1][0][0]; - s->last_mv[1][0][1]= s->last_mv[1][1][1]= s->mv[1][0][1]; - s->b_count++; - } - }else{ - if(s->mv_dir & MV_DIR_FORWARD){ - put_bits(&s->pb, 1, s->field_select[0][0]); - put_bits(&s->pb, 1, s->field_select[0][1]); - } - if(s->mv_dir & MV_DIR_BACKWARD){ - put_bits(&s->pb, 1, s->field_select[1][0]); - put_bits(&s->pb, 1, s->field_select[1][1]); - } - if(s->mv_dir & MV_DIR_FORWARD){ - for(i=0; i<2; i++){ - ff_h263_encode_motion_vector(s, s->mv[0][i][0] - s->last_mv[0][i][0] , - s->mv[0][i][1] - s->last_mv[0][i][1]/2, s->f_code); - s->last_mv[0][i][0]= s->mv[0][i][0]; - s->last_mv[0][i][1]= s->mv[0][i][1]*2; - } - s->f_count++; - } - if(s->mv_dir & MV_DIR_BACKWARD){ - for(i=0; i<2; i++){ - ff_h263_encode_motion_vector(s, s->mv[1][i][0] - s->last_mv[1][i][0] , - s->mv[1][i][1] - s->last_mv[1][i][1]/2, s->b_code); - s->last_mv[1][i][0]= s->mv[1][i][0]; - s->last_mv[1][i][1]= s->mv[1][i][1]*2; - } - s->b_count++; - } - } - } - - if(interleaved_stats){ - s->mv_bits+= get_bits_diff(s); - } - - mpeg4_encode_blocks(s, block, NULL, NULL, NULL, &s->pb); - - if(interleaved_stats){ - s->p_tex_bits+= get_bits_diff(s); - } - - }else{ /* s->pict_type==FF_B_TYPE */ - cbp= get_p_cbp(s, block, motion_x, motion_y); - - if ((cbp | motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16) { - /* check if the B frames can skip it too, as we must skip it if we skip here - why didn't they just compress the skip-mb bits instead of reusing them ?! */ - if(s->max_b_frames>0){ - int i; - int x,y, offset; - uint8_t *p_pic; - - x= s->mb_x*16; - y= s->mb_y*16; - if(x+16 > s->width) x= s->width-16; - if(y+16 > s->height) y= s->height-16; - - offset= x + y*s->linesize; - p_pic= s->new_picture.data[0] + offset; - - s->mb_skipped=1; - for(i=0; i<s->max_b_frames; i++){ - uint8_t *b_pic; - int diff; - Picture *pic= s->reordered_input_picture[i+1]; - - if(pic==NULL || pic->pict_type!=FF_B_TYPE) break; - - b_pic= pic->data[0] + offset; - if(pic->type != FF_BUFFER_TYPE_SHARED) - b_pic+= INPLACE_OFFSET; - diff= s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16); - if(diff>s->qscale*70){ //FIXME check that 70 is optimal - s->mb_skipped=0; - break; - } - } - }else - s->mb_skipped=1; - - if(s->mb_skipped==1){ - /* skip macroblock */ - put_bits(&s->pb, 1, 1); - - if(interleaved_stats){ - s->misc_bits++; - s->last_bits++; - } - s->skip_count++; - - return; - } - } - - put_bits(&s->pb, 1, 0); /* mb coded */ - cbpc = cbp & 3; - cbpy = cbp >> 2; - cbpy ^= 0xf; - if(s->mv_type==MV_TYPE_16X16){ - if(s->dquant) cbpc+= 8; - put_bits(&s->pb, - inter_MCBPC_bits[cbpc], - inter_MCBPC_code[cbpc]); - - put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(pb2, 2, dquant_code[s->dquant+2]); - - if(!s->progressive_sequence){ - if(cbp) - put_bits(pb2, 1, s->interlaced_dct); - put_bits(pb2, 1, 0); - } - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - /* motion vectors: 16x16 mode */ - h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - - ff_h263_encode_motion_vector(s, motion_x - pred_x, - motion_y - pred_y, s->f_code); - }else if(s->mv_type==MV_TYPE_FIELD){ - if(s->dquant) cbpc+= 8; - put_bits(&s->pb, - inter_MCBPC_bits[cbpc], - inter_MCBPC_code[cbpc]); - - put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(pb2, 2, dquant_code[s->dquant+2]); - - assert(!s->progressive_sequence); - if(cbp) - put_bits(pb2, 1, s->interlaced_dct); - put_bits(pb2, 1, 1); - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - /* motion vectors: 16x8 interlaced mode */ - h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - pred_y /=2; - - put_bits(&s->pb, 1, s->field_select[0][0]); - put_bits(&s->pb, 1, s->field_select[0][1]); - - ff_h263_encode_motion_vector(s, s->mv[0][0][0] - pred_x, - s->mv[0][0][1] - pred_y, s->f_code); - ff_h263_encode_motion_vector(s, s->mv[0][1][0] - pred_x, - s->mv[0][1][1] - pred_y, s->f_code); - }else{ - assert(s->mv_type==MV_TYPE_8X8); - put_bits(&s->pb, - inter_MCBPC_bits[cbpc+16], - inter_MCBPC_code[cbpc+16]); - put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]); - - if(!s->progressive_sequence){ - if(cbp) - put_bits(pb2, 1, s->interlaced_dct); - } - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - for(i=0; i<4; i++){ - /* motion vectors: 8x8 mode*/ - h263_pred_motion(s, i, 0, &pred_x, &pred_y); - - ff_h263_encode_motion_vector(s, s->current_picture.motion_val[0][ s->block_index[i] ][0] - pred_x, - s->current_picture.motion_val[0][ s->block_index[i] ][1] - pred_y, s->f_code); - } - } - - if(interleaved_stats){ - s->mv_bits+= get_bits_diff(s); - } - - mpeg4_encode_blocks(s, block, NULL, NULL, NULL, tex_pb); - - if(interleaved_stats){ - s->p_tex_bits+= get_bits_diff(s); - } - s->f_count++; - } - } else { - int cbp; - int dc_diff[6]; //dc values with the dc prediction subtracted - int dir[6]; //prediction direction - int zigzag_last_index[6]; - uint8_t *scan_table[6]; - int i; - - for(i=0; i<6; i++){ - dc_diff[i]= ff_mpeg4_pred_dc(s, i, block[i][0], &dir[i], 1); - } - - if(s->flags & CODEC_FLAG_AC_PRED){ - s->ac_pred= decide_ac_pred(s, block, dir, scan_table, zigzag_last_index); - }else{ - for(i=0; i<6; i++) - scan_table[i]= s->intra_scantable.permutated; - } - - /* compute cbp */ - cbp = 0; - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 1) - cbp |= 1 << (5 - i); - } - - cbpc = cbp & 3; - if (s->pict_type == FF_I_TYPE) { - if(s->dquant) cbpc+=4; - put_bits(&s->pb, - intra_MCBPC_bits[cbpc], - intra_MCBPC_code[cbpc]); - } else { - if(s->dquant) cbpc+=8; - put_bits(&s->pb, 1, 0); /* mb coded */ - put_bits(&s->pb, - inter_MCBPC_bits[cbpc + 4], - inter_MCBPC_code[cbpc + 4]); - } - put_bits(pb2, 1, s->ac_pred); - cbpy = cbp >> 2; - put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(dc_pb, 2, dquant_code[s->dquant+2]); - - if(!s->progressive_sequence){ - put_bits(dc_pb, 1, s->interlaced_dct); - } - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - mpeg4_encode_blocks(s, block, dc_diff, scan_table, dc_pb, tex_pb); - - if(interleaved_stats){ - s->i_tex_bits+= get_bits_diff(s); - } - s->i_count++; - - /* restore ac coeffs & last_index stuff if we messed them up with the prediction */ - if(s->ac_pred) - restore_ac_coeffs(s, block, dir, scan_table, zigzag_last_index); - } -} - /** * encodes a 8x8 block. * @param block the 8x8 block @@ -2155,259 +1126,6 @@ int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir, #if CONFIG_ENCODERS /***************************************************/ -/** - * add mpeg4 stuffing bits (01...1) - */ -void ff_mpeg4_stuffing(PutBitContext * pbc) -{ - int length; - put_bits(pbc, 1, 0); - length= (-put_bits_count(pbc))&7; - if(length) put_bits(pbc, length, (1<<length)-1); -} - -/* must be called before writing the header */ -void ff_set_mpeg4_time(MpegEncContext * s){ - if(s->pict_type==FF_B_TYPE){ - ff_mpeg4_init_direct_mv(s); - }else{ - s->last_time_base= s->time_base; - s->time_base= s->time/s->avctx->time_base.den; - } -} - -static void mpeg4_encode_gop_header(MpegEncContext * s){ - int hours, minutes, seconds; - int64_t time; - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, GOP_STARTCODE); - - time= s->current_picture_ptr->pts; - if(s->reordered_input_picture[1]) - time= FFMIN(time, s->reordered_input_picture[1]->pts); - time= time*s->avctx->time_base.num; - - seconds= time/s->avctx->time_base.den; - minutes= seconds/60; seconds %= 60; - hours= minutes/60; minutes %= 60; - hours%=24; - - put_bits(&s->pb, 5, hours); - put_bits(&s->pb, 6, minutes); - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 6, seconds); - - put_bits(&s->pb, 1, !!(s->flags&CODEC_FLAG_CLOSED_GOP)); - put_bits(&s->pb, 1, 0); //broken link == NO - - s->last_time_base= time / s->avctx->time_base.den; - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_visual_object_header(MpegEncContext * s){ - int profile_and_level_indication; - int vo_ver_id; - - if(s->avctx->profile != FF_PROFILE_UNKNOWN){ - profile_and_level_indication = s->avctx->profile << 4; - }else if(s->max_b_frames || s->quarter_sample){ - profile_and_level_indication= 0xF0; // adv simple - }else{ - profile_and_level_indication= 0x00; // simple - } - - if(s->avctx->level != FF_LEVEL_UNKNOWN){ - profile_and_level_indication |= s->avctx->level; - }else{ - profile_and_level_indication |= 1; //level 1 - } - - if(profile_and_level_indication>>4 == 0xF){ - vo_ver_id= 5; - }else{ - vo_ver_id= 1; - } - - //FIXME levels - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VOS_STARTCODE); - - put_bits(&s->pb, 8, profile_and_level_indication); - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE); - - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 4, vo_ver_id); - put_bits(&s->pb, 3, 1); //priority - - put_bits(&s->pb, 4, 1); //visual obj type== video obj - - put_bits(&s->pb, 1, 0); //video signal type == no clue //FIXME - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number) -{ - int vo_ver_id; - - if (!CONFIG_MPEG4_ENCODER) return; - - if(s->max_b_frames || s->quarter_sample){ - vo_ver_id= 5; - s->vo_type= ADV_SIMPLE_VO_TYPE; - }else{ - vo_ver_id= 1; - s->vo_type= SIMPLE_VO_TYPE; - } - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x100 + vo_number); /* video obj */ - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x120 + vol_number); /* video obj layer */ - - put_bits(&s->pb, 1, 0); /* random access vol */ - put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */ - if(s->workaround_bugs & FF_BUG_MS) { - put_bits(&s->pb, 1, 0); /* is obj layer id= no */ - } else { - put_bits(&s->pb, 1, 1); /* is obj layer id= yes */ - put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */ - put_bits(&s->pb, 3, 1); /* is obj layer priority */ - } - - s->aspect_ratio_info= aspect_to_info(s->avctx->sample_aspect_ratio); - - put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */ - if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){ - put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num); - put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den); - } - - if(s->workaround_bugs & FF_BUG_MS) { // - put_bits(&s->pb, 1, 0); /* vol control parameters= no @@@ */ - } else { - put_bits(&s->pb, 1, 1); /* vol control parameters= yes */ - put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */ - put_bits(&s->pb, 1, s->low_delay); - put_bits(&s->pb, 1, 0); /* vbv parameters= no */ - } - - put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */ - put_bits(&s->pb, 1, 1); /* marker bit */ - - put_bits(&s->pb, 16, s->avctx->time_base.den); - if (s->time_increment_bits < 1) - s->time_increment_bits = 1; - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, 0); /* fixed vop rate=no */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->width); /* vol width */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->height); /* vol height */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1); - put_bits(&s->pb, 1, 1); /* obmc disable */ - if (vo_ver_id == 1) { - put_bits(&s->pb, 1, s->vol_sprite_usage); /* sprite enable */ - }else{ - put_bits(&s->pb, 2, s->vol_sprite_usage); /* sprite enable */ - } - - put_bits(&s->pb, 1, 0); /* not 8 bit == false */ - put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/ - - if(s->mpeg_quant){ - ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix); - ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix); - } - - if (vo_ver_id != 1) - put_bits(&s->pb, 1, s->quarter_sample); - put_bits(&s->pb, 1, 1); /* complexity estimation disable */ - s->resync_marker= s->rtp_mode; - put_bits(&s->pb, 1, s->resync_marker ? 0 : 1);/* resync marker disable */ - put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0); - if(s->data_partitioning){ - put_bits(&s->pb, 1, 0); /* no rvlc */ - } - - if (vo_ver_id != 1){ - put_bits(&s->pb, 1, 0); /* newpred */ - put_bits(&s->pb, 1, 0); /* reduced res vop */ - } - put_bits(&s->pb, 1, 0); /* scalability */ - - ff_mpeg4_stuffing(&s->pb); - - /* user data */ - if(!(s->flags & CODEC_FLAG_BITEXACT)){ - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x1B2); /* user_data */ - ff_put_string(&s->pb, LIBAVCODEC_IDENT, 0); - } -} - -/* write mpeg4 VOP header */ -void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number) -{ - int time_incr; - int time_div, time_mod; - - if(s->pict_type==FF_I_TYPE){ - if(!(s->flags&CODEC_FLAG_GLOBAL_HEADER)){ - if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT) //HACK, the reference sw is buggy - mpeg4_encode_visual_object_header(s); - if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT || picture_number==0) //HACK, the reference sw is buggy - mpeg4_encode_vol_header(s, 0, 0); - } - if(!(s->workaround_bugs & FF_BUG_MS)) - mpeg4_encode_gop_header(s); - } - - s->partitioned_frame= s->data_partitioning && s->pict_type!=FF_B_TYPE; - - put_bits(&s->pb, 16, 0); /* vop header */ - put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */ - put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */ - - assert(s->time>=0); - time_div= s->time/s->avctx->time_base.den; - time_mod= s->time%s->avctx->time_base.den; - time_incr= time_div - s->last_time_base; - assert(time_incr >= 0); - while(time_incr--) - put_bits(&s->pb, 1, 1); - - put_bits(&s->pb, 1, 0); - - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */ - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, 1, 1); /* vop coded */ - if ( s->pict_type == FF_P_TYPE - || (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) { - put_bits(&s->pb, 1, s->no_rounding); /* rounding type */ - } - put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */ - if(!s->progressive_sequence){ - put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first); - put_bits(&s->pb, 1, s->alternate_scan); - } - //FIXME sprite stuff - - put_bits(&s->pb, 5, s->qscale); - - if (s->pict_type != FF_I_TYPE) - put_bits(&s->pb, 3, s->f_code); /* fcode_for */ - if (s->pict_type == FF_B_TYPE) - put_bits(&s->pb, 3, s->b_code); /* fcode_back */ -} - void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code) { int range, l, bit_size, sign, code, bits; @@ -2479,139 +1197,6 @@ static void init_mv_penalty_and_fcode(MpegEncContext *s) } } -static void init_uni_dc_tab(void) -{ - int level, uni_code, uni_len; - - for(level=-256; level<256; level++){ - int size, v, l; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (level < 0) - l= (-level) ^ ((1 << size) - 1); - else - l= level; - - /* luminance */ - uni_code= DCtab_lum[size][0]; - uni_len = DCtab_lum[size][1]; - - if (size > 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } - } - uni_DCtab_lum_bits[level+256]= uni_code; - uni_DCtab_lum_len [level+256]= uni_len; - - /* chrominance */ - uni_code= DCtab_chrom[size][0]; - uni_len = DCtab_chrom[size][1]; - - if (size > 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } - } - uni_DCtab_chrom_bits[level+256]= uni_code; - uni_DCtab_chrom_len [level+256]= uni_len; - - } -} - -static void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab){ - int slevel, run, last; - - assert(MAX_LEVEL >= 64); - assert(MAX_RUN >= 63); - - for(slevel=-64; slevel<64; slevel++){ - if(slevel==0) continue; - for(run=0; run<64; run++){ - for(last=0; last<=1; last++){ - const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64); - int level= slevel < 0 ? -slevel : slevel; - int sign= slevel < 0 ? 1 : 0; - int bits, len, code; - int level1, run1; - - len_tab[index]= 100; - - /* ESC0 */ - code= get_rl_index(rl, last, run, level); - bits= rl->table_vlc[code][0]; - len= rl->table_vlc[code][1]; - bits=bits*2+sign; len++; - - if(code!=rl->n && len < len_tab[index]){ - bits_tab[index]= bits; - len_tab [index]= len; - } - /* ESC1 */ - bits= rl->table_vlc[rl->n][0]; - len= rl->table_vlc[rl->n][1]; - bits=bits*2; len++; //esc1 - level1= level - rl->max_level[last][run]; - if(level1>0){ - code= get_rl_index(rl, last, run, level1); - bits<<= rl->table_vlc[code][1]; - len += rl->table_vlc[code][1]; - bits += rl->table_vlc[code][0]; - bits=bits*2+sign; len++; - - if(code!=rl->n && len < len_tab[index]){ - bits_tab[index]= bits; - len_tab [index]= len; - } - } - /* ESC2 */ - bits= rl->table_vlc[rl->n][0]; - len= rl->table_vlc[rl->n][1]; - bits=bits*4+2; len+=2; //esc2 - run1 = run - rl->max_run[last][level] - 1; - if(run1>=0){ - code= get_rl_index(rl, last, run1, level); - bits<<= rl->table_vlc[code][1]; - len += rl->table_vlc[code][1]; - bits += rl->table_vlc[code][0]; - bits=bits*2+sign; len++; - - if(code!=rl->n && len < len_tab[index]){ - bits_tab[index]= bits; - len_tab [index]= len; - } - } - /* ESC3 */ - bits= rl->table_vlc[rl->n][0]; - len = rl->table_vlc[rl->n][1]; - bits=bits*4+3; len+=2; //esc3 - bits=bits*2+last; len++; - bits=bits*64+run; len+=6; - bits=bits*2+1; len++; //marker - bits=bits*4096+(slevel&0xfff); len+=12; - bits=bits*2+1; len++; //marker - - if(len < len_tab[index]){ - bits_tab[index]= bits; - len_tab [index]= len; - } - } - } - } -} - static void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab){ int slevel, run, last; @@ -2662,14 +1247,8 @@ void h263_encode_init(MpegEncContext *s) if (!done) { done = 1; - init_uni_dc_tab(); - init_rl(&rl_inter, static_rl_table_store[0]); - init_rl(&rl_intra, static_rl_table_store[1]); - init_rl(&rl_intra_aic, static_rl_table_store[2]); - - init_uni_mpeg4_rl_tab(&rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len); - init_uni_mpeg4_rl_tab(&rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len); + init_rl(&rl_intra_aic, static_rl_table_store[1]); init_uni_h263_rl_tab(&rl_intra_aic, NULL, uni_h263_intra_aic_rl_len); init_uni_h263_rl_tab(&rl_inter , NULL, uni_h263_inter_rl_len); @@ -2690,32 +1269,6 @@ void h263_encode_init(MpegEncContext *s) switch(s->codec_id){ case CODEC_ID_MPEG4: s->fcode_tab= fcode_tab; - s->min_qcoeff= -2048; - s->max_qcoeff= 2047; - s->intra_ac_vlc_length = uni_mpeg4_intra_rl_len; - s->intra_ac_vlc_last_length= uni_mpeg4_intra_rl_len + 128*64; - s->inter_ac_vlc_length = uni_mpeg4_inter_rl_len; - s->inter_ac_vlc_last_length= uni_mpeg4_inter_rl_len + 128*64; - s->luma_dc_vlc_length= uni_DCtab_lum_len; - s->chroma_dc_vlc_length= uni_DCtab_chrom_len; - s->ac_esc_length= 7+2+1+6+1+12+1; - s->y_dc_scale_table= ff_mpeg4_y_dc_scale_table; - s->c_dc_scale_table= ff_mpeg4_c_dc_scale_table; - - if(s->flags & CODEC_FLAG_GLOBAL_HEADER){ - - s->avctx->extradata= av_malloc(1024); - init_put_bits(&s->pb, s->avctx->extradata, 1024); - - if(!(s->workaround_bugs & FF_BUG_MS)) - mpeg4_encode_visual_object_header(s); - mpeg4_encode_vol_header(s, 0, 0); - -// ff_mpeg4_stuffing(&s->pb); ? - flush_put_bits(&s->pb); - s->avctx->extradata_size= (put_bits_count(&s->pb)+7)>>3; - } - break; case CODEC_ID_H263P: if(s->umvplus) @@ -2749,76 +1302,13 @@ void h263_encode_init(MpegEncContext *s) } #endif //CONFIG_ENCODERS -/** - * predicts the ac. - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir the ac prediction direction - */ -void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, - int dir) -{ - int i; - int16_t *ac_val, *ac_val1; - int8_t * const qscale_table= s->current_picture.qscale_table; - - /* find prediction */ - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val1 = ac_val; - if (s->ac_pred) { - if (dir == 0) { - const int xy= s->mb_x-1 + s->mb_y*s->mb_stride; - /* left prediction */ - ac_val -= 16; - - if(s->mb_x==0 || s->qscale == qscale_table[xy] || n==1 || n==3){ - /* same qscale */ - for(i=1;i<8;i++) { - block[s->dsp.idct_permutation[i<<3]] += ac_val[i]; - } - }else{ - /* different qscale, we must rescale */ - for(i=1;i<8;i++) { - block[s->dsp.idct_permutation[i<<3]] += ROUNDED_DIV(ac_val[i]*qscale_table[xy], s->qscale); - } - } - } else { - const int xy= s->mb_x + s->mb_y*s->mb_stride - s->mb_stride; - /* top prediction */ - ac_val -= 16 * s->block_wrap[n]; - - if(s->mb_y==0 || s->qscale == qscale_table[xy] || n==2 || n==3){ - /* same qscale */ - for(i=1;i<8;i++) { - block[s->dsp.idct_permutation[i]] += ac_val[i + 8]; - } - }else{ - /* different qscale, we must rescale */ - for(i=1;i<8;i++) { - block[s->dsp.idct_permutation[i]] += ROUNDED_DIV(ac_val[i + 8]*qscale_table[xy], s->qscale); - } - } - } - } - /* left copy */ - for(i=1;i<8;i++) - ac_val1[i ] = block[s->dsp.idct_permutation[i<<3]]; - - /* top copy */ - for(i=1;i<8;i++) - ac_val1[8 + i] = block[s->dsp.idct_permutation[i ]]; - -} - /***********************************************/ /* decoding */ -static VLC intra_MCBPC_vlc; -static VLC inter_MCBPC_vlc; -static VLC cbpy_vlc; +VLC intra_MCBPC_vlc; +VLC inter_MCBPC_vlc; +VLC cbpy_vlc; static VLC mv_vlc; -static VLC dc_lum, dc_chrom; -static VLC sprite_trajectory; -static VLC mb_type_b_vlc; static VLC h263_mbtype_b_vlc; static VLC cbpc_b_vlc; @@ -2845,27 +1335,9 @@ void h263_decode_init_vlc(MpegEncContext *s) &mvtab[0][1], 2, 1, &mvtab[0][0], 2, 1, 538); init_rl(&rl_inter, static_rl_table_store[0]); - init_rl(&rl_intra, static_rl_table_store[1]); - init_rl(&rvlc_rl_inter, static_rl_table_store[3]); - init_rl(&rvlc_rl_intra, static_rl_table_store[4]); - init_rl(&rl_intra_aic, static_rl_table_store[2]); + init_rl(&rl_intra_aic, static_rl_table_store[1]); INIT_VLC_RL(rl_inter, 554); - INIT_VLC_RL(rl_intra, 554); - INIT_VLC_RL(rvlc_rl_inter, 1072); - INIT_VLC_RL(rvlc_rl_intra, 1072); INIT_VLC_RL(rl_intra_aic, 554); - INIT_VLC_STATIC(&dc_lum, DC_VLC_BITS, 10 /* 13 */, - &DCtab_lum[0][1], 2, 1, - &DCtab_lum[0][0], 2, 1, 512); - INIT_VLC_STATIC(&dc_chrom, DC_VLC_BITS, 10 /* 13 */, - &DCtab_chrom[0][1], 2, 1, - &DCtab_chrom[0][0], 2, 1, 512); - INIT_VLC_STATIC(&sprite_trajectory, SPRITE_TRAJ_VLC_BITS, 15, - &sprite_trajectory_tab[0][1], 4, 2, - &sprite_trajectory_tab[0][0], 4, 2, 128); - INIT_VLC_STATIC(&mb_type_b_vlc, MB_TYPE_B_VLC_BITS, 4, - &mb_type_b_tab[0][1], 2, 1, - &mb_type_b_tab[0][0], 2, 1, 16); INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15, &h263_mbtype_b_tab[0][1], 2, 1, &h263_mbtype_b_tab[0][0], 2, 1, 80); @@ -2974,438 +1446,6 @@ static inline void memsetw(short *tab, int val, int n) tab[i] = val; } -#if CONFIG_ENCODERS - -void ff_mpeg4_init_partitions(MpegEncContext *s) -{ - uint8_t *start= put_bits_ptr(&s->pb); - uint8_t *end= s->pb.buf_end; - int size= end - start; - int pb_size = (((intptr_t)start + size/3)&(~3)) - (intptr_t)start; - int tex_size= (size - 2*pb_size)&(~3); - - set_put_bits_buffer_size(&s->pb, pb_size); - init_put_bits(&s->tex_pb, start + pb_size , tex_size); - init_put_bits(&s->pb2 , start + pb_size + tex_size, pb_size); -} - -void ff_mpeg4_merge_partitions(MpegEncContext *s) -{ - const int pb2_len = put_bits_count(&s->pb2 ); - const int tex_pb_len= put_bits_count(&s->tex_pb); - const int bits= put_bits_count(&s->pb); - - if(s->pict_type==FF_I_TYPE){ - put_bits(&s->pb, 19, DC_MARKER); - s->misc_bits+=19 + pb2_len + bits - s->last_bits; - s->i_tex_bits+= tex_pb_len; - }else{ - put_bits(&s->pb, 17, MOTION_MARKER); - s->misc_bits+=17 + pb2_len; - s->mv_bits+= bits - s->last_bits; - s->p_tex_bits+= tex_pb_len; - } - - flush_put_bits(&s->pb2); - flush_put_bits(&s->tex_pb); - - set_put_bits_buffer_size(&s->pb, s->pb2.buf_end - s->pb.buf); - ff_copy_bits(&s->pb, s->pb2.buf , pb2_len); - ff_copy_bits(&s->pb, s->tex_pb.buf, tex_pb_len); - s->last_bits= put_bits_count(&s->pb); -} - -#endif //CONFIG_ENCODERS - -int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s){ - switch(s->pict_type){ - case FF_I_TYPE: - return 16; - case FF_P_TYPE: - case FF_S_TYPE: - return s->f_code+15; - case FF_B_TYPE: - return FFMAX3(s->f_code, s->b_code, 2) + 15; - default: - return -1; - } -} - -#if CONFIG_ENCODERS - -void ff_mpeg4_encode_video_packet_header(MpegEncContext *s) -{ - int mb_num_bits= av_log2(s->mb_num - 1) + 1; - - put_bits(&s->pb, ff_mpeg4_get_video_packet_prefix_length(s), 0); - put_bits(&s->pb, 1, 1); - - put_bits(&s->pb, mb_num_bits, s->mb_x + s->mb_y*s->mb_width); - put_bits(&s->pb, s->quant_precision, s->qscale); - put_bits(&s->pb, 1, 0); /* no HEC */ -} - -#endif //CONFIG_ENCODERS - -/** - * check if the next stuff is a resync marker or the end. - * @return 0 if not - */ -static inline int mpeg4_is_resync(MpegEncContext *s){ - int bits_count= get_bits_count(&s->gb); - int v= show_bits(&s->gb, 16); - - if(s->workaround_bugs&FF_BUG_NO_PADDING){ - return 0; - } - - while(v<=0xFF){ - if(s->pict_type==FF_B_TYPE || (v>>(8-s->pict_type)!=1) || s->partitioned_frame) - break; - skip_bits(&s->gb, 8+s->pict_type); - bits_count+= 8+s->pict_type; - v= show_bits(&s->gb, 16); - } - - if(bits_count + 8 >= s->gb.size_in_bits){ - v>>=8; - v|= 0x7F >> (7-(bits_count&7)); - - if(v==0x7F) - return 1; - }else{ - if(v == ff_mpeg4_resync_prefix[bits_count&7]){ - int len; - GetBitContext gb= s->gb; - - skip_bits(&s->gb, 1); - align_get_bits(&s->gb); - - for(len=0; len<32; len++){ - if(get_bits1(&s->gb)) break; - } - - s->gb= gb; - - if(len>=ff_mpeg4_get_video_packet_prefix_length(s)) - return 1; - } - } - return 0; -} - -static void mpeg4_decode_sprite_trajectory(MpegEncContext * s, GetBitContext *gb) -{ - int i; - int a= 2<<s->sprite_warping_accuracy; - int rho= 3-s->sprite_warping_accuracy; - int r=16/a; - const int vop_ref[4][2]= {{0,0}, {s->width,0}, {0, s->height}, {s->width, s->height}}; // only true for rectangle shapes - int d[4][2]={{0,0}, {0,0}, {0,0}, {0,0}}; - int sprite_ref[4][2]; - int virtual_ref[2][2]; - int w2, h2, w3, h3; - int alpha=0, beta=0; - int w= s->width; - int h= s->height; - int min_ab; - - for(i=0; i<s->num_sprite_warping_points; i++){ - int length; - int x=0, y=0; - - length= get_vlc2(gb, sprite_trajectory.table, SPRITE_TRAJ_VLC_BITS, 3); - if(length){ - x= get_xbits(gb, length); - } - if(!(s->divx_version==500 && s->divx_build==413)) skip_bits1(gb); /* marker bit */ - - length= get_vlc2(gb, sprite_trajectory.table, SPRITE_TRAJ_VLC_BITS, 3); - if(length){ - y=get_xbits(gb, length); - } - skip_bits1(gb); /* marker bit */ - s->sprite_traj[i][0]= d[i][0]= x; - s->sprite_traj[i][1]= d[i][1]= y; - } - for(; i<4; i++) - s->sprite_traj[i][0]= s->sprite_traj[i][1]= 0; - - while((1<<alpha)<w) alpha++; - while((1<<beta )<h) beta++; // there seems to be a typo in the mpeg4 std for the definition of w' and h' - w2= 1<<alpha; - h2= 1<<beta; - -// Note, the 4th point isn't used for GMC - if(s->divx_version==500 && s->divx_build==413){ - sprite_ref[0][0]= a*vop_ref[0][0] + d[0][0]; - sprite_ref[0][1]= a*vop_ref[0][1] + d[0][1]; - sprite_ref[1][0]= a*vop_ref[1][0] + d[0][0] + d[1][0]; - sprite_ref[1][1]= a*vop_ref[1][1] + d[0][1] + d[1][1]; - sprite_ref[2][0]= a*vop_ref[2][0] + d[0][0] + d[2][0]; - sprite_ref[2][1]= a*vop_ref[2][1] + d[0][1] + d[2][1]; - } else { - sprite_ref[0][0]= (a>>1)*(2*vop_ref[0][0] + d[0][0]); - sprite_ref[0][1]= (a>>1)*(2*vop_ref[0][1] + d[0][1]); - sprite_ref[1][0]= (a>>1)*(2*vop_ref[1][0] + d[0][0] + d[1][0]); - sprite_ref[1][1]= (a>>1)*(2*vop_ref[1][1] + d[0][1] + d[1][1]); - sprite_ref[2][0]= (a>>1)*(2*vop_ref[2][0] + d[0][0] + d[2][0]); - sprite_ref[2][1]= (a>>1)*(2*vop_ref[2][1] + d[0][1] + d[2][1]); - } -/* sprite_ref[3][0]= (a>>1)*(2*vop_ref[3][0] + d[0][0] + d[1][0] + d[2][0] + d[3][0]); - sprite_ref[3][1]= (a>>1)*(2*vop_ref[3][1] + d[0][1] + d[1][1] + d[2][1] + d[3][1]); */ - -// this is mostly identical to the mpeg4 std (and is totally unreadable because of that ...) -// perhaps it should be reordered to be more readable ... -// the idea behind this virtual_ref mess is to be able to use shifts later per pixel instead of divides -// so the distance between points is converted from w&h based to w2&h2 based which are of the 2^x form - virtual_ref[0][0]= 16*(vop_ref[0][0] + w2) - + ROUNDED_DIV(((w - w2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + w2*(r*sprite_ref[1][0] - 16*vop_ref[1][0])),w); - virtual_ref[0][1]= 16*vop_ref[0][1] - + ROUNDED_DIV(((w - w2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + w2*(r*sprite_ref[1][1] - 16*vop_ref[1][1])),w); - virtual_ref[1][0]= 16*vop_ref[0][0] - + ROUNDED_DIV(((h - h2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + h2*(r*sprite_ref[2][0] - 16*vop_ref[2][0])),h); - virtual_ref[1][1]= 16*(vop_ref[0][1] + h2) - + ROUNDED_DIV(((h - h2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + h2*(r*sprite_ref[2][1] - 16*vop_ref[2][1])),h); - - switch(s->num_sprite_warping_points) - { - case 0: - s->sprite_offset[0][0]= 0; - s->sprite_offset[0][1]= 0; - s->sprite_offset[1][0]= 0; - s->sprite_offset[1][1]= 0; - s->sprite_delta[0][0]= a; - s->sprite_delta[0][1]= 0; - s->sprite_delta[1][0]= 0; - s->sprite_delta[1][1]= a; - s->sprite_shift[0]= 0; - s->sprite_shift[1]= 0; - break; - case 1: //GMC only - s->sprite_offset[0][0]= sprite_ref[0][0] - a*vop_ref[0][0]; - s->sprite_offset[0][1]= sprite_ref[0][1] - a*vop_ref[0][1]; - s->sprite_offset[1][0]= ((sprite_ref[0][0]>>1)|(sprite_ref[0][0]&1)) - a*(vop_ref[0][0]/2); - s->sprite_offset[1][1]= ((sprite_ref[0][1]>>1)|(sprite_ref[0][1]&1)) - a*(vop_ref[0][1]/2); - s->sprite_delta[0][0]= a; - s->sprite_delta[0][1]= 0; - s->sprite_delta[1][0]= 0; - s->sprite_delta[1][1]= a; - s->sprite_shift[0]= 0; - s->sprite_shift[1]= 0; - break; - case 2: - s->sprite_offset[0][0]= (sprite_ref[0][0]<<(alpha+rho)) - + (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-vop_ref[0][0]) - + ( r*sprite_ref[0][1] - virtual_ref[0][1])*(-vop_ref[0][1]) - + (1<<(alpha+rho-1)); - s->sprite_offset[0][1]= (sprite_ref[0][1]<<(alpha+rho)) - + (-r*sprite_ref[0][1] + virtual_ref[0][1])*(-vop_ref[0][0]) - + (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-vop_ref[0][1]) - + (1<<(alpha+rho-1)); - s->sprite_offset[1][0]= ( (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-2*vop_ref[0][0] + 1) - +( r*sprite_ref[0][1] - virtual_ref[0][1])*(-2*vop_ref[0][1] + 1) - +2*w2*r*sprite_ref[0][0] - - 16*w2 - + (1<<(alpha+rho+1))); - s->sprite_offset[1][1]= ( (-r*sprite_ref[0][1] + virtual_ref[0][1])*(-2*vop_ref[0][0] + 1) - +(-r*sprite_ref[0][0] + virtual_ref[0][0])*(-2*vop_ref[0][1] + 1) - +2*w2*r*sprite_ref[0][1] - - 16*w2 - + (1<<(alpha+rho+1))); - s->sprite_delta[0][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0]); - s->sprite_delta[0][1]= (+r*sprite_ref[0][1] - virtual_ref[0][1]); - s->sprite_delta[1][0]= (-r*sprite_ref[0][1] + virtual_ref[0][1]); - s->sprite_delta[1][1]= (-r*sprite_ref[0][0] + virtual_ref[0][0]); - - s->sprite_shift[0]= alpha+rho; - s->sprite_shift[1]= alpha+rho+2; - break; - case 3: - min_ab= FFMIN(alpha, beta); - w3= w2>>min_ab; - h3= h2>>min_ab; - s->sprite_offset[0][0]= (sprite_ref[0][0]<<(alpha+beta+rho-min_ab)) - + (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3*(-vop_ref[0][0]) - + (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3*(-vop_ref[0][1]) - + (1<<(alpha+beta+rho-min_ab-1)); - s->sprite_offset[0][1]= (sprite_ref[0][1]<<(alpha+beta+rho-min_ab)) - + (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3*(-vop_ref[0][0]) - + (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3*(-vop_ref[0][1]) - + (1<<(alpha+beta+rho-min_ab-1)); - s->sprite_offset[1][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3*(-2*vop_ref[0][0] + 1) - + (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3*(-2*vop_ref[0][1] + 1) - + 2*w2*h3*r*sprite_ref[0][0] - - 16*w2*h3 - + (1<<(alpha+beta+rho-min_ab+1)); - s->sprite_offset[1][1]= (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3*(-2*vop_ref[0][0] + 1) - + (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3*(-2*vop_ref[0][1] + 1) - + 2*w2*h3*r*sprite_ref[0][1] - - 16*w2*h3 - + (1<<(alpha+beta+rho-min_ab+1)); - s->sprite_delta[0][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3; - s->sprite_delta[0][1]= (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3; - s->sprite_delta[1][0]= (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3; - s->sprite_delta[1][1]= (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3; - - s->sprite_shift[0]= alpha + beta + rho - min_ab; - s->sprite_shift[1]= alpha + beta + rho - min_ab + 2; - break; - } - /* try to simplify the situation */ - if( s->sprite_delta[0][0] == a<<s->sprite_shift[0] - && s->sprite_delta[0][1] == 0 - && s->sprite_delta[1][0] == 0 - && s->sprite_delta[1][1] == a<<s->sprite_shift[0]) - { - s->sprite_offset[0][0]>>=s->sprite_shift[0]; - s->sprite_offset[0][1]>>=s->sprite_shift[0]; - s->sprite_offset[1][0]>>=s->sprite_shift[1]; - s->sprite_offset[1][1]>>=s->sprite_shift[1]; - s->sprite_delta[0][0]= a; - s->sprite_delta[0][1]= 0; - s->sprite_delta[1][0]= 0; - s->sprite_delta[1][1]= a; - s->sprite_shift[0]= 0; - s->sprite_shift[1]= 0; - s->real_sprite_warping_points=1; - } - else{ - int shift_y= 16 - s->sprite_shift[0]; - int shift_c= 16 - s->sprite_shift[1]; - for(i=0; i<2; i++){ - s->sprite_offset[0][i]<<= shift_y; - s->sprite_offset[1][i]<<= shift_c; - s->sprite_delta[0][i]<<= shift_y; - s->sprite_delta[1][i]<<= shift_y; - s->sprite_shift[i]= 16; - } - s->real_sprite_warping_points= s->num_sprite_warping_points; - } -} - -/** - * decodes the next video packet. - * @return <0 if something went wrong - */ -static int mpeg4_decode_video_packet_header(MpegEncContext *s) -{ - int mb_num_bits= av_log2(s->mb_num - 1) + 1; - int header_extension=0, mb_num, len; - - /* is there enough space left for a video packet + header */ - if( get_bits_count(&s->gb) > s->gb.size_in_bits-20) return -1; - - for(len=0; len<32; len++){ - if(get_bits1(&s->gb)) break; - } - - if(len!=ff_mpeg4_get_video_packet_prefix_length(s)){ - av_log(s->avctx, AV_LOG_ERROR, "marker does not match f_code\n"); - return -1; - } - - if(s->shape != RECT_SHAPE){ - header_extension= get_bits1(&s->gb); - //FIXME more stuff here - } - - mb_num= get_bits(&s->gb, mb_num_bits); - if(mb_num>=s->mb_num){ - av_log(s->avctx, AV_LOG_ERROR, "illegal mb_num in video packet (%d %d) \n", mb_num, s->mb_num); - return -1; - } - if(s->pict_type == FF_B_TYPE){ - while(s->next_picture.mbskip_table[ s->mb_index2xy[ mb_num ] ]) mb_num++; - if(mb_num >= s->mb_num) return -1; // slice contains just skipped MBs which where already decoded - } - - s->mb_x= mb_num % s->mb_width; - s->mb_y= mb_num / s->mb_width; - - if(s->shape != BIN_ONLY_SHAPE){ - int qscale= get_bits(&s->gb, s->quant_precision); - if(qscale) - s->chroma_qscale=s->qscale= qscale; - } - - if(s->shape == RECT_SHAPE){ - header_extension= get_bits1(&s->gb); - } - if(header_extension){ - int time_increment; - int time_incr=0; - - while (get_bits1(&s->gb) != 0) - time_incr++; - - check_marker(&s->gb, "before time_increment in video packed header"); - time_increment= get_bits(&s->gb, s->time_increment_bits); - check_marker(&s->gb, "before vop_coding_type in video packed header"); - - skip_bits(&s->gb, 2); /* vop coding type */ - //FIXME not rect stuff here - - if(s->shape != BIN_ONLY_SHAPE){ - skip_bits(&s->gb, 3); /* intra dc vlc threshold */ -//FIXME don't just ignore everything - if(s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE){ - mpeg4_decode_sprite_trajectory(s, &s->gb); - av_log(s->avctx, AV_LOG_ERROR, "untested\n"); - } - - //FIXME reduced res stuff here - - if (s->pict_type != FF_I_TYPE) { - int f_code = get_bits(&s->gb, 3); /* fcode_for */ - if(f_code==0){ - av_log(s->avctx, AV_LOG_ERROR, "Error, video packet header damaged (f_code=0)\n"); - } - } - if (s->pict_type == FF_B_TYPE) { - int b_code = get_bits(&s->gb, 3); - if(b_code==0){ - av_log(s->avctx, AV_LOG_ERROR, "Error, video packet header damaged (b_code=0)\n"); - } - } - } - } - //FIXME new-pred stuff - - return 0; -} - -void ff_mpeg4_clean_buffers(MpegEncContext *s) -{ - int c_wrap, c_xy, l_wrap, l_xy; - - l_wrap= s->b8_stride; - l_xy= (2*s->mb_y-1)*l_wrap + s->mb_x*2 - 1; - c_wrap= s->mb_stride; - c_xy= (s->mb_y-1)*c_wrap + s->mb_x - 1; - -#if 0 - /* clean DC */ - memsetw(s->dc_val[0] + l_xy, 1024, l_wrap*2+1); - memsetw(s->dc_val[1] + c_xy, 1024, c_wrap+1); - memsetw(s->dc_val[2] + c_xy, 1024, c_wrap+1); -#endif - - /* clean AC */ - memset(s->ac_val[0] + l_xy, 0, (l_wrap*2+1)*16*sizeof(int16_t)); - memset(s->ac_val[1] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t)); - memset(s->ac_val[2] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t)); - - /* clean MV */ - // we can't clear the MVs as they might be needed by a b frame -// memset(s->motion_val + l_xy, 0, (l_wrap*2+1)*2*sizeof(int16_t)); -// memset(s->motion_val, 0, 2*sizeof(int16_t)*(2 + s->mb_width*2)*(2 + s->mb_height*2)); - s->last_mv[0][0][0]= - s->last_mv[0][0][1]= - s->last_mv[1][0][0]= - s->last_mv[1][0][1]= 0; -} - /** * finds the next resync_marker * @param p pointer to buffer to scan @@ -3473,7 +1513,7 @@ int ff_h263_resync(MpegEncContext *s){ return -1; } -static int h263_decode_motion(MpegEncContext * s, int pred, int f_code) +int h263_decode_motion(MpegEncContext * s, int pred, int f_code) { int code, val, sign, shift, l; code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2); @@ -3510,745 +1550,6 @@ static int h263_decode_motion(MpegEncContext * s, int pred, int f_code) return val; } -/** - * gets the average motion vector for a GMC MB. - * @param n either 0 for the x component or 1 for y - * @returns the average MV for a GMC MB - */ -static inline int get_amv(MpegEncContext *s, int n){ - int x, y, mb_v, sum, dx, dy, shift; - int len = 1 << (s->f_code + 4); - const int a= s->sprite_warping_accuracy; - - if(s->workaround_bugs & FF_BUG_AMV) - len >>= s->quarter_sample; - - if(s->real_sprite_warping_points==1){ - if(s->divx_version==500 && s->divx_build==413) - sum= s->sprite_offset[0][n] / (1<<(a - s->quarter_sample)); - else - sum= RSHIFT(s->sprite_offset[0][n]<<s->quarter_sample, a); - }else{ - dx= s->sprite_delta[n][0]; - dy= s->sprite_delta[n][1]; - shift= s->sprite_shift[0]; - if(n) dy -= 1<<(shift + a + 1); - else dx -= 1<<(shift + a + 1); - mb_v= s->sprite_offset[0][n] + dx*s->mb_x*16 + dy*s->mb_y*16; - - sum=0; - for(y=0; y<16; y++){ - int v; - - v= mb_v + dy*y; - //XXX FIXME optimize - for(x=0; x<16; x++){ - sum+= v>>shift; - v+= dx; - } - } - sum= RSHIFT(sum, a+8-s->quarter_sample); - } - - if (sum < -len) sum= -len; - else if (sum >= len) sum= len-1; - - return sum; -} - -/** - * decodes the dc value. - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir_ptr the prediction direction will be stored here - * @return the quantized dc - */ -static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) -{ - int level, code; - - if (n < 4) - code = get_vlc2(&s->gb, dc_lum.table, DC_VLC_BITS, 1); - else - code = get_vlc2(&s->gb, dc_chrom.table, DC_VLC_BITS, 1); - if (code < 0 || code > 9 /* && s->nbit<9 */){ - av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); - return -1; - } - if (code == 0) { - level = 0; - } else { - if(IS_3IV1){ - if(code==1) - level= 2*get_bits1(&s->gb)-1; - else{ - if(get_bits1(&s->gb)) - level = get_bits(&s->gb, code-1) + (1<<(code-1)); - else - level = -get_bits(&s->gb, code-1) - (1<<(code-1)); - } - }else{ - level = get_xbits(&s->gb, code); - } - - if (code > 8){ - if(get_bits1(&s->gb)==0){ /* marker */ - if(s->error_recognition>=2){ - av_log(s->avctx, AV_LOG_ERROR, "dc marker bit missing\n"); - return -1; - } - } - } - } - - return ff_mpeg4_pred_dc(s, n, level, dir_ptr, 0); -} - -/** - * decodes first partition. - * @return number of MBs decoded or <0 if an error occurred - */ -static int mpeg4_decode_partition_a(MpegEncContext *s){ - int mb_num; - static const int8_t quant_tab[4] = { -1, -2, 1, 2 }; - - /* decode first partition */ - mb_num=0; - s->first_slice_line=1; - for(; s->mb_y<s->mb_height; s->mb_y++){ - ff_init_block_index(s); - for(; s->mb_x<s->mb_width; s->mb_x++){ - const int xy= s->mb_x + s->mb_y*s->mb_stride; - int cbpc; - int dir=0; - - mb_num++; - ff_update_block_index(s); - if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1) - s->first_slice_line=0; - - if(s->pict_type==FF_I_TYPE){ - int i; - - do{ - if(show_bits_long(&s->gb, 19)==DC_MARKER){ - return mb_num-1; - } - - cbpc = get_vlc2(&s->gb, intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2); - if (cbpc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - }while(cbpc == 8); - - s->cbp_table[xy]= cbpc & 3; - s->current_picture.mb_type[xy]= MB_TYPE_INTRA; - s->mb_intra = 1; - - if(cbpc & 4) { - ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]); - } - s->current_picture.qscale_table[xy]= s->qscale; - - s->mbintra_table[xy]= 1; - for(i=0; i<6; i++){ - int dc_pred_dir; - int dc= mpeg4_decode_dc(s, i, &dc_pred_dir); - if(dc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "DC corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - dir<<=1; - if(dc_pred_dir) dir|=1; - } - s->pred_dir_table[xy]= dir; - }else{ /* P/S_TYPE */ - int mx, my, pred_x, pred_y, bits; - int16_t * const mot_val= s->current_picture.motion_val[0][s->block_index[0]]; - const int stride= s->b8_stride*2; - -try_again: - bits= show_bits(&s->gb, 17); - if(bits==MOTION_MARKER){ - return mb_num-1; - } - skip_bits1(&s->gb); - if(bits&0x10000){ - /* skip mb */ - if(s->pict_type==FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE){ - s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_GMC | MB_TYPE_L0; - mx= get_amv(s, 0); - my= get_amv(s, 1); - }else{ - s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0; - mx=my=0; - } - mot_val[0 ]= mot_val[2 ]= - mot_val[0+stride]= mot_val[2+stride]= mx; - mot_val[1 ]= mot_val[3 ]= - mot_val[1+stride]= mot_val[3+stride]= my; - - if(s->mbintra_table[xy]) - ff_clean_intra_table_entries(s); - continue; - } - - cbpc = get_vlc2(&s->gb, inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2); - if (cbpc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - if(cbpc == 20) - goto try_again; - - s->cbp_table[xy]= cbpc&(8+3); //8 is dquant - - s->mb_intra = ((cbpc & 4) != 0); - - if(s->mb_intra){ - s->current_picture.mb_type[xy]= MB_TYPE_INTRA; - s->mbintra_table[xy]= 1; - mot_val[0 ]= mot_val[2 ]= - mot_val[0+stride]= mot_val[2+stride]= 0; - mot_val[1 ]= mot_val[3 ]= - mot_val[1+stride]= mot_val[3+stride]= 0; - }else{ - if(s->mbintra_table[xy]) - ff_clean_intra_table_entries(s); - - if(s->pict_type==FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE && (cbpc & 16) == 0) - s->mcsel= get_bits1(&s->gb); - else s->mcsel= 0; - - if ((cbpc & 16) == 0) { - /* 16x16 motion prediction */ - - h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - if(!s->mcsel){ - mx = h263_decode_motion(s, pred_x, s->f_code); - if (mx >= 0xffff) - return -1; - - my = h263_decode_motion(s, pred_y, s->f_code); - if (my >= 0xffff) - return -1; - s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0; - } else { - mx = get_amv(s, 0); - my = get_amv(s, 1); - s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_GMC | MB_TYPE_L0; - } - - mot_val[0 ]= mot_val[2 ] = - mot_val[0+stride]= mot_val[2+stride]= mx; - mot_val[1 ]= mot_val[3 ]= - mot_val[1+stride]= mot_val[3+stride]= my; - } else { - int i; - s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0; - for(i=0;i<4;i++) { - int16_t *mot_val= h263_pred_motion(s, i, 0, &pred_x, &pred_y); - mx = h263_decode_motion(s, pred_x, s->f_code); - if (mx >= 0xffff) - return -1; - - my = h263_decode_motion(s, pred_y, s->f_code); - if (my >= 0xffff) - return -1; - mot_val[0] = mx; - mot_val[1] = my; - } - } - } - } - } - s->mb_x= 0; - } - - return mb_num; -} - -/** - * decode second partition. - * @return <0 if an error occurred - */ -static int mpeg4_decode_partition_b(MpegEncContext *s, int mb_count){ - int mb_num=0; - static const int8_t quant_tab[4] = { -1, -2, 1, 2 }; - - s->mb_x= s->resync_mb_x; - s->first_slice_line=1; - for(s->mb_y= s->resync_mb_y; mb_num < mb_count; s->mb_y++){ - ff_init_block_index(s); - for(; mb_num < mb_count && s->mb_x<s->mb_width; s->mb_x++){ - const int xy= s->mb_x + s->mb_y*s->mb_stride; - - mb_num++; - ff_update_block_index(s); - if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1) - s->first_slice_line=0; - - if(s->pict_type==FF_I_TYPE){ - int ac_pred= get_bits1(&s->gb); - int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpy corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - s->cbp_table[xy]|= cbpy<<2; - s->current_picture.mb_type[xy] |= ac_pred*MB_TYPE_ACPRED; - }else{ /* P || S_TYPE */ - if(IS_INTRA(s->current_picture.mb_type[xy])){ - int dir=0,i; - int ac_pred = get_bits1(&s->gb); - int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "I cbpy corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - if(s->cbp_table[xy] & 8) { - ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]); - } - s->current_picture.qscale_table[xy]= s->qscale; - - for(i=0; i<6; i++){ - int dc_pred_dir; - int dc= mpeg4_decode_dc(s, i, &dc_pred_dir); - if(dc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "DC corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - dir<<=1; - if(dc_pred_dir) dir|=1; - } - s->cbp_table[xy]&= 3; //remove dquant - s->cbp_table[xy]|= cbpy<<2; - s->current_picture.mb_type[xy] |= ac_pred*MB_TYPE_ACPRED; - s->pred_dir_table[xy]= dir; - }else if(IS_SKIP(s->current_picture.mb_type[xy])){ - s->current_picture.qscale_table[xy]= s->qscale; - s->cbp_table[xy]= 0; - }else{ - int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "P cbpy corrupted at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - if(s->cbp_table[xy] & 8) { - ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]); - } - s->current_picture.qscale_table[xy]= s->qscale; - - s->cbp_table[xy]&= 3; //remove dquant - s->cbp_table[xy]|= (cbpy^0xf)<<2; - } - } - } - if(mb_num >= mb_count) return 0; - s->mb_x= 0; - } - return 0; -} - -/** - * decodes the first & second partition - * @return <0 if error (and sets error type in the error_status_table) - */ -int ff_mpeg4_decode_partitions(MpegEncContext *s) -{ - int mb_num; - const int part_a_error= s->pict_type==FF_I_TYPE ? (DC_ERROR|MV_ERROR) : MV_ERROR; - const int part_a_end = s->pict_type==FF_I_TYPE ? (DC_END |MV_END) : MV_END; - - mb_num= mpeg4_decode_partition_a(s); - if(mb_num<0){ - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, part_a_error); - return -1; - } - - if(s->resync_mb_x + s->resync_mb_y*s->mb_width + mb_num > s->mb_num){ - av_log(s->avctx, AV_LOG_ERROR, "slice below monitor ...\n"); - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, part_a_error); - return -1; - } - - s->mb_num_left= mb_num; - - if(s->pict_type==FF_I_TYPE){ - while(show_bits(&s->gb, 9) == 1) - skip_bits(&s->gb, 9); - if(get_bits_long(&s->gb, 19)!=DC_MARKER){ - av_log(s->avctx, AV_LOG_ERROR, "marker missing after first I partition at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - }else{ - while(show_bits(&s->gb, 10) == 1) - skip_bits(&s->gb, 10); - if(get_bits(&s->gb, 17)!=MOTION_MARKER){ - av_log(s->avctx, AV_LOG_ERROR, "marker missing after first P partition at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - } - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, part_a_end); - - if( mpeg4_decode_partition_b(s, mb_num) < 0){ - if(s->pict_type==FF_P_TYPE) - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, DC_ERROR); - return -1; - }else{ - if(s->pict_type==FF_P_TYPE) - ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, DC_END); - } - - return 0; -} - -/** - * decodes a block. - * @return <0 if an error occurred - */ -static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block, - int n, int coded, int intra, int rvlc) -{ - int level, i, last, run; - int dc_pred_dir; - RLTable * rl; - RL_VLC_ELEM * rl_vlc; - const uint8_t * scan_table; - int qmul, qadd; - - //Note intra & rvlc should be optimized away if this is inlined - - if(intra) { - if(s->use_intra_dc_vlc){ - /* DC coef */ - if(s->partitioned_frame){ - level = s->dc_val[0][ s->block_index[n] ]; - if(n<4) level= FASTDIV((level + (s->y_dc_scale>>1)), s->y_dc_scale); - else level= FASTDIV((level + (s->c_dc_scale>>1)), s->c_dc_scale); - dc_pred_dir= (s->pred_dir_table[s->mb_x + s->mb_y*s->mb_stride]<<n)&32; - }else{ - level = mpeg4_decode_dc(s, n, &dc_pred_dir); - if (level < 0) - return -1; - } - block[0] = level; - i = 0; - }else{ - i = -1; - ff_mpeg4_pred_dc(s, n, 0, &dc_pred_dir, 0); - } - if (!coded) - goto not_coded; - - if(rvlc){ - rl = &rvlc_rl_intra; - rl_vlc = rvlc_rl_intra.rl_vlc[0]; - }else{ - rl = &rl_intra; - rl_vlc = rl_intra.rl_vlc[0]; - } - if (s->ac_pred) { - if (dc_pred_dir == 0) - scan_table = s->intra_v_scantable.permutated; /* left */ - else - scan_table = s->intra_h_scantable.permutated; /* top */ - } else { - scan_table = s->intra_scantable.permutated; - } - qmul=1; - qadd=0; - } else { - i = -1; - if (!coded) { - s->block_last_index[n] = i; - return 0; - } - if(rvlc) rl = &rvlc_rl_inter; - else rl = &rl_inter; - - scan_table = s->intra_scantable.permutated; - - if(s->mpeg_quant){ - qmul=1; - qadd=0; - if(rvlc){ - rl_vlc = rvlc_rl_inter.rl_vlc[0]; - }else{ - rl_vlc = rl_inter.rl_vlc[0]; - } - }else{ - qmul = s->qscale << 1; - qadd = (s->qscale - 1) | 1; - if(rvlc){ - rl_vlc = rvlc_rl_inter.rl_vlc[s->qscale]; - }else{ - rl_vlc = rl_inter.rl_vlc[s->qscale]; - } - } - } - { - OPEN_READER(re, &s->gb); - for(;;) { - UPDATE_CACHE(re, &s->gb); - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 0); - if (level==0) { - /* escape */ - if(rvlc){ - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in rvlc esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); - run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); - SKIP_COUNTER(re, &s->gb, 1+1+6); - UPDATE_CACHE(re, &s->gb); - - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in rvlc esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - level= SHOW_UBITS(re, &s->gb, 11); SKIP_CACHE(re, &s->gb, 11); - - if(SHOW_UBITS(re, &s->gb, 5)!=0x10){ - av_log(s->avctx, AV_LOG_ERROR, "reverse esc missing\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 5); - - level= level * qmul + qadd; - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); LAST_SKIP_CACHE(re, &s->gb, 1); - SKIP_COUNTER(re, &s->gb, 1+11+5+1); - - i+= run + 1; - if(last) i+=192; - }else{ - int cache; - cache= GET_CACHE(re, &s->gb); - - if(IS_3IV1) - cache ^= 0xC0000000; - - if (cache&0x80000000) { - if (cache&0x40000000) { - /* third escape */ - SKIP_CACHE(re, &s->gb, 2); - last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); - run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); - SKIP_COUNTER(re, &s->gb, 2+1+6); - UPDATE_CACHE(re, &s->gb); - - if(IS_3IV1){ - level= SHOW_SBITS(re, &s->gb, 12); LAST_SKIP_BITS(re, &s->gb, 12); - }else{ - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in 3. esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - level= SHOW_SBITS(re, &s->gb, 12); SKIP_CACHE(re, &s->gb, 12); - - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in 3. esc\n"); - return -1; - }; LAST_SKIP_CACHE(re, &s->gb, 1); - - SKIP_COUNTER(re, &s->gb, 1+12+1); - } - -#if 0 - if(s->error_recognition >= FF_ER_COMPLIANT){ - const int abs_level= FFABS(level); - if(abs_level<=MAX_LEVEL && run<=MAX_RUN){ - const int run1= run - rl->max_run[last][abs_level] - 1; - if(abs_level <= rl->max_level[last][run]){ - av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, vlc encoding possible\n"); - return -1; - } - if(s->error_recognition > FF_ER_COMPLIANT){ - if(abs_level <= rl->max_level[last][run]*2){ - av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, esc 1 encoding possible\n"); - return -1; - } - if(run1 >= 0 && abs_level <= rl->max_level[last][run1]){ - av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, esc 2 encoding possible\n"); - return -1; - } - } - } - } -#endif - if (level>0) level= level * qmul + qadd; - else level= level * qmul - qadd; - - if((unsigned)(level + 2048) > 4095){ - if(s->error_recognition > FF_ER_COMPLIANT){ - if(level > 2560 || level<-2560){ - av_log(s->avctx, AV_LOG_ERROR, "|level| overflow in 3. esc, qp=%d\n", s->qscale); - return -1; - } - } - level= level<0 ? -2048 : 2047; - } - - i+= run + 1; - if(last) i+=192; - } else { - /* second escape */ -#if MIN_CACHE_BITS < 20 - LAST_SKIP_BITS(re, &s->gb, 2); - UPDATE_CACHE(re, &s->gb); -#else - SKIP_BITS(re, &s->gb, 2); -#endif - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); - i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - } else { - /* first escape */ -#if MIN_CACHE_BITS < 19 - LAST_SKIP_BITS(re, &s->gb, 1); - UPDATE_CACHE(re, &s->gb); -#else - SKIP_BITS(re, &s->gb, 1); -#endif - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); - i+= run; - level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - } - } else { - i+= run; - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - if (i > 62){ - i-= 192; - if(i&(~63)){ - av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - block[scan_table[i]] = level; - break; - } - - block[scan_table[i]] = level; - } - CLOSE_READER(re, &s->gb); - } - not_coded: - if (intra) { - if(!s->use_intra_dc_vlc){ - block[0] = ff_mpeg4_pred_dc(s, n, block[0], &dc_pred_dir, 0); - - i -= i>>31; //if(i == -1) i=0; - } - - mpeg4_pred_ac(s, block, n, dc_pred_dir); - if (s->ac_pred) { - i = 63; /* XXX: not optimal */ - } - } - s->block_last_index[n] = i; - return 0; -} - -/** - * decode partition C of one MB. - * @return <0 if an error occurred - */ -static int mpeg4_decode_partitioned_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, mb_type; - const int xy= s->mb_x + s->mb_y*s->mb_stride; - - mb_type= s->current_picture.mb_type[xy]; - cbp = s->cbp_table[xy]; - - s->use_intra_dc_vlc= s->qscale < s->intra_dc_threshold; - - if(s->current_picture.qscale_table[xy] != s->qscale){ - ff_set_qscale(s, s->current_picture.qscale_table[xy] ); - } - - if (s->pict_type == FF_P_TYPE || s->pict_type==FF_S_TYPE) { - int i; - for(i=0; i<4; i++){ - s->mv[0][i][0] = s->current_picture.motion_val[0][ s->block_index[i] ][0]; - s->mv[0][i][1] = s->current_picture.motion_val[0][ s->block_index[i] ][1]; - } - s->mb_intra = IS_INTRA(mb_type); - - if (IS_SKIP(mb_type)) { - /* skip mb */ - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - if(s->pict_type==FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE){ - s->mcsel=1; - s->mb_skipped = 0; - }else{ - s->mcsel=0; - s->mb_skipped = 1; - } - }else if(s->mb_intra){ - s->ac_pred = IS_ACPRED(s->current_picture.mb_type[xy]); - }else if(!s->mb_intra){ -// s->mcsel= 0; //FIXME do we need to init that - - s->mv_dir = MV_DIR_FORWARD; - if (IS_8X8(mb_type)) { - s->mv_type = MV_TYPE_8X8; - } else { - s->mv_type = MV_TYPE_16X16; - } - } - } else { /* I-Frame */ - s->mb_intra = 1; - s->ac_pred = IS_ACPRED(s->current_picture.mb_type[xy]); - } - - if (!IS_SKIP(mb_type)) { - int i; - s->dsp.clear_blocks(s->block[0]); - /* decode each block */ - for (i = 0; i < 6; i++) { - if(mpeg4_decode_block(s, block[i], i, cbp&32, s->mb_intra, s->rvlc) < 0){ - av_log(s->avctx, AV_LOG_ERROR, "texture corrupted at %d %d %d\n", s->mb_x, s->mb_y, s->mb_intra); - return -1; - } - cbp+=cbp; - } - } - - /* per-MB end of slice check */ - - if(--s->mb_num_left <= 0){ - if(mpeg4_is_resync(s)) - return SLICE_END; - else - return SLICE_NOEND; - }else{ - if(mpeg4_is_resync(s)){ - const int delta= s->mb_x + 1 == s->mb_width ? 2 : 1; - if(s->cbp_table[xy+delta]) - return SLICE_END; - } - return SLICE_OK; - } -} /* Decodes RVLC of H.263+ UMV */ static int h263p_decode_umotion(MpegEncContext * s, int pred) @@ -4807,335 +2108,6 @@ end: return SLICE_OK; } -int ff_mpeg4_decode_mb(MpegEncContext *s, - DCTELEM block[6][64]) -{ - int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant; - int16_t *mot_val; - static int8_t quant_tab[4] = { -1, -2, 1, 2 }; - const int xy= s->mb_x + s->mb_y * s->mb_stride; - - assert(s->h263_pred); - - if (s->pict_type == FF_P_TYPE || s->pict_type==FF_S_TYPE) { - do{ - if (get_bits1(&s->gb)) { - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - if(s->pict_type==FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE){ - s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_GMC | MB_TYPE_16x16 | MB_TYPE_L0; - s->mcsel=1; - s->mv[0][0][0]= get_amv(s, 0); - s->mv[0][0][1]= get_amv(s, 1); - - s->mb_skipped = 0; - }else{ - s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0; - s->mcsel=0; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mb_skipped = 1; - } - goto end; - } - cbpc = get_vlc2(&s->gb, inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2); - if (cbpc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc damaged at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - }while(cbpc == 20); - - s->dsp.clear_blocks(s->block[0]); - dquant = cbpc & 8; - s->mb_intra = ((cbpc & 4) != 0); - if (s->mb_intra) goto intra; - - if(s->pict_type==FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE && (cbpc & 16) == 0) - s->mcsel= get_bits1(&s->gb); - else s->mcsel= 0; - cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1) ^ 0x0F; - - cbp = (cbpc & 3) | (cbpy << 2); - if (dquant) { - ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]); - } - if((!s->progressive_sequence) && (cbp || (s->workaround_bugs&FF_BUG_XVID_ILACE))) - s->interlaced_dct= get_bits1(&s->gb); - - s->mv_dir = MV_DIR_FORWARD; - if ((cbpc & 16) == 0) { - if(s->mcsel){ - s->current_picture.mb_type[xy]= MB_TYPE_GMC | MB_TYPE_16x16 | MB_TYPE_L0; - /* 16x16 global motion prediction */ - s->mv_type = MV_TYPE_16X16; - mx= get_amv(s, 0); - my= get_amv(s, 1); - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - }else if((!s->progressive_sequence) && get_bits1(&s->gb)){ - s->current_picture.mb_type[xy]= MB_TYPE_16x8 | MB_TYPE_L0 | MB_TYPE_INTERLACED; - /* 16x8 field motion prediction */ - s->mv_type= MV_TYPE_FIELD; - - s->field_select[0][0]= get_bits1(&s->gb); - s->field_select[0][1]= get_bits1(&s->gb); - - h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - - for(i=0; i<2; i++){ - mx = h263_decode_motion(s, pred_x, s->f_code); - if (mx >= 0xffff) - return -1; - - my = h263_decode_motion(s, pred_y/2, s->f_code); - if (my >= 0xffff) - return -1; - - s->mv[0][i][0] = mx; - s->mv[0][i][1] = my; - } - }else{ - s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0; - /* 16x16 motion prediction */ - s->mv_type = MV_TYPE_16X16; - h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - mx = h263_decode_motion(s, pred_x, s->f_code); - - if (mx >= 0xffff) - return -1; - - my = h263_decode_motion(s, pred_y, s->f_code); - - if (my >= 0xffff) - return -1; - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - } - } else { - s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0; - s->mv_type = MV_TYPE_8X8; - for(i=0;i<4;i++) { - mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y); - mx = h263_decode_motion(s, pred_x, s->f_code); - if (mx >= 0xffff) - return -1; - - my = h263_decode_motion(s, pred_y, s->f_code); - if (my >= 0xffff) - return -1; - s->mv[0][i][0] = mx; - s->mv[0][i][1] = my; - mot_val[0] = mx; - mot_val[1] = my; - } - } - } else if(s->pict_type==FF_B_TYPE) { - int modb1; // first bit of modb - int modb2; // second bit of modb - int mb_type; - - s->mb_intra = 0; //B-frames never contain intra blocks - s->mcsel=0; // ... true gmc blocks - - if(s->mb_x==0){ - for(i=0; i<2; i++){ - s->last_mv[i][0][0]= - s->last_mv[i][0][1]= - s->last_mv[i][1][0]= - s->last_mv[i][1][1]= 0; - } - } - - /* if we skipped it in the future P Frame than skip it now too */ - s->mb_skipped= s->next_picture.mbskip_table[s->mb_y * s->mb_stride + s->mb_x]; // Note, skiptab=0 if last was GMC - - if(s->mb_skipped){ - /* skip mb */ - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mv[1][0][0] = 0; - s->mv[1][0][1] = 0; - s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0; - goto end; - } - - modb1= get_bits1(&s->gb); - if(modb1){ - mb_type= MB_TYPE_DIRECT2 | MB_TYPE_SKIP | MB_TYPE_L0L1; //like MB_TYPE_B_DIRECT but no vectors coded - cbp=0; - }else{ - modb2= get_bits1(&s->gb); - mb_type= get_vlc2(&s->gb, mb_type_b_vlc.table, MB_TYPE_B_VLC_BITS, 1); - if(mb_type<0){ - av_log(s->avctx, AV_LOG_ERROR, "illegal MB_type\n"); - return -1; - } - mb_type= mb_type_b_map[ mb_type ]; - if(modb2) cbp= 0; - else{ - s->dsp.clear_blocks(s->block[0]); - cbp= get_bits(&s->gb, 6); - } - - if ((!IS_DIRECT(mb_type)) && cbp) { - if(get_bits1(&s->gb)){ - ff_set_qscale(s, s->qscale + get_bits1(&s->gb)*4 - 2); - } - } - - if(!s->progressive_sequence){ - if(cbp) - s->interlaced_dct= get_bits1(&s->gb); - - if(!IS_DIRECT(mb_type) && get_bits1(&s->gb)){ - mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; - mb_type &= ~MB_TYPE_16x16; - - if(USES_LIST(mb_type, 0)){ - s->field_select[0][0]= get_bits1(&s->gb); - s->field_select[0][1]= get_bits1(&s->gb); - } - if(USES_LIST(mb_type, 1)){ - s->field_select[1][0]= get_bits1(&s->gb); - s->field_select[1][1]= get_bits1(&s->gb); - } - } - } - - s->mv_dir = 0; - if((mb_type & (MB_TYPE_DIRECT2|MB_TYPE_INTERLACED)) == 0){ - s->mv_type= MV_TYPE_16X16; - - if(USES_LIST(mb_type, 0)){ - s->mv_dir = MV_DIR_FORWARD; - - mx = h263_decode_motion(s, s->last_mv[0][0][0], s->f_code); - my = h263_decode_motion(s, s->last_mv[0][0][1], s->f_code); - s->last_mv[0][1][0]= s->last_mv[0][0][0]= s->mv[0][0][0] = mx; - s->last_mv[0][1][1]= s->last_mv[0][0][1]= s->mv[0][0][1] = my; - } - - if(USES_LIST(mb_type, 1)){ - s->mv_dir |= MV_DIR_BACKWARD; - - mx = h263_decode_motion(s, s->last_mv[1][0][0], s->b_code); - my = h263_decode_motion(s, s->last_mv[1][0][1], s->b_code); - s->last_mv[1][1][0]= s->last_mv[1][0][0]= s->mv[1][0][0] = mx; - s->last_mv[1][1][1]= s->last_mv[1][0][1]= s->mv[1][0][1] = my; - } - }else if(!IS_DIRECT(mb_type)){ - s->mv_type= MV_TYPE_FIELD; - - if(USES_LIST(mb_type, 0)){ - s->mv_dir = MV_DIR_FORWARD; - - for(i=0; i<2; i++){ - mx = h263_decode_motion(s, s->last_mv[0][i][0] , s->f_code); - my = h263_decode_motion(s, s->last_mv[0][i][1]/2, s->f_code); - s->last_mv[0][i][0]= s->mv[0][i][0] = mx; - s->last_mv[0][i][1]= (s->mv[0][i][1] = my)*2; - } - } - - if(USES_LIST(mb_type, 1)){ - s->mv_dir |= MV_DIR_BACKWARD; - - for(i=0; i<2; i++){ - mx = h263_decode_motion(s, s->last_mv[1][i][0] , s->b_code); - my = h263_decode_motion(s, s->last_mv[1][i][1]/2, s->b_code); - s->last_mv[1][i][0]= s->mv[1][i][0] = mx; - s->last_mv[1][i][1]= (s->mv[1][i][1] = my)*2; - } - } - } - } - - if(IS_DIRECT(mb_type)){ - if(IS_SKIP(mb_type)) - mx=my=0; - else{ - mx = h263_decode_motion(s, 0, 1); - my = h263_decode_motion(s, 0, 1); - } - - s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT; - mb_type |= ff_mpeg4_set_direct_mv(s, mx, my); - } - s->current_picture.mb_type[xy]= mb_type; - } else { /* I-Frame */ - do{ - cbpc = get_vlc2(&s->gb, intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2); - if (cbpc < 0){ - av_log(s->avctx, AV_LOG_ERROR, "I cbpc damaged at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - }while(cbpc == 8); - - dquant = cbpc & 4; - s->mb_intra = 1; -intra: - s->ac_pred = get_bits1(&s->gb); - if(s->ac_pred) - s->current_picture.mb_type[xy]= MB_TYPE_INTRA | MB_TYPE_ACPRED; - else - s->current_picture.mb_type[xy]= MB_TYPE_INTRA; - - cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "I cbpy damaged at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - cbp = (cbpc & 3) | (cbpy << 2); - - s->use_intra_dc_vlc= s->qscale < s->intra_dc_threshold; - - if (dquant) { - ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]); - } - - if(!s->progressive_sequence) - s->interlaced_dct= get_bits1(&s->gb); - - s->dsp.clear_blocks(s->block[0]); - /* decode each block */ - for (i = 0; i < 6; i++) { - if (mpeg4_decode_block(s, block[i], i, cbp&32, 1, 0) < 0) - return -1; - cbp+=cbp; - } - goto end; - } - - /* decode each block */ - for (i = 0; i < 6; i++) { - if (mpeg4_decode_block(s, block[i], i, cbp&32, 0, 0) < 0) - return -1; - cbp+=cbp; - } -end: - - /* per-MB end of slice check */ - if(s->codec_id==CODEC_ID_MPEG4){ - if(mpeg4_is_resync(s)){ - const int delta= s->mb_x + 1 == s->mb_width ? 2 : 1; - if(s->pict_type==FF_B_TYPE && s->next_picture.mbskip_table[xy + delta]) - return SLICE_OK; - return SLICE_END; - } - } - - return SLICE_OK; -} - /* most is hardcoded. should extend to handle all h263 streams */ int h263_decode_picture_header(MpegEncContext *s) { @@ -5294,7 +2266,7 @@ int h263_decode_picture_header(MpegEncContext *s) s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 8); s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 8); }else{ - s->avctx->sample_aspect_ratio= pixel_aspect[s->aspect_ratio_info]; + s->avctx->sample_aspect_ratio= ff_h263_pixel_aspect[s->aspect_ratio_info]; } } else { width = h263_format[format][0]; @@ -5403,688 +2375,4 @@ int h263_decode_picture_header(MpegEncContext *s) return 0; } -static int mpeg4_decode_gop_header(MpegEncContext * s, GetBitContext *gb){ - int hours, minutes, seconds; - - hours= get_bits(gb, 5); - minutes= get_bits(gb, 6); - skip_bits1(gb); - seconds= get_bits(gb, 6); - - s->time_base= seconds + 60*(minutes + 60*hours); - - skip_bits1(gb); - skip_bits1(gb); - - return 0; -} - -static int decode_vol_header(MpegEncContext *s, GetBitContext *gb){ - int width, height, vo_ver_id; - - /* vol header */ - skip_bits(gb, 1); /* random access */ - s->vo_type= get_bits(gb, 8); - if (get_bits1(gb) != 0) { /* is_ol_id */ - vo_ver_id = get_bits(gb, 4); /* vo_ver_id */ - skip_bits(gb, 3); /* vo_priority */ - } else { - vo_ver_id = 1; - } - s->aspect_ratio_info= get_bits(gb, 4); - if(s->aspect_ratio_info == FF_ASPECT_EXTENDED){ - s->avctx->sample_aspect_ratio.num= get_bits(gb, 8); // par_width - s->avctx->sample_aspect_ratio.den= get_bits(gb, 8); // par_height - }else{ - s->avctx->sample_aspect_ratio= pixel_aspect[s->aspect_ratio_info]; - } - - if ((s->vol_control_parameters=get_bits1(gb))) { /* vol control parameter */ - int chroma_format= get_bits(gb, 2); - if(chroma_format!=CHROMA_420){ - av_log(s->avctx, AV_LOG_ERROR, "illegal chroma format\n"); - } - s->low_delay= get_bits1(gb); - if(get_bits1(gb)){ /* vbv parameters */ - get_bits(gb, 15); /* first_half_bitrate */ - skip_bits1(gb); /* marker */ - get_bits(gb, 15); /* latter_half_bitrate */ - skip_bits1(gb); /* marker */ - get_bits(gb, 15); /* first_half_vbv_buffer_size */ - skip_bits1(gb); /* marker */ - get_bits(gb, 3); /* latter_half_vbv_buffer_size */ - get_bits(gb, 11); /* first_half_vbv_occupancy */ - skip_bits1(gb); /* marker */ - get_bits(gb, 15); /* latter_half_vbv_occupancy */ - skip_bits1(gb); /* marker */ - } - }else{ - // set low delay flag only once the smartest? low delay detection won't be overriden - if(s->picture_number==0) - s->low_delay=0; - } - s->shape = get_bits(gb, 2); /* vol shape */ - if(s->shape != RECT_SHAPE) av_log(s->avctx, AV_LOG_ERROR, "only rectangular vol supported\n"); - if(s->shape == GRAY_SHAPE && vo_ver_id != 1){ - av_log(s->avctx, AV_LOG_ERROR, "Gray shape not supported\n"); - skip_bits(gb, 4); //video_object_layer_shape_extension - } - - check_marker(gb, "before time_increment_resolution"); - - s->avctx->time_base.den = get_bits(gb, 16); - if(!s->avctx->time_base.den){ - av_log(s->avctx, AV_LOG_ERROR, "time_base.den==0\n"); - return -1; - } - - s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1; - if (s->time_increment_bits < 1) - s->time_increment_bits = 1; - - check_marker(gb, "before fixed_vop_rate"); - - if (get_bits1(gb) != 0) { /* fixed_vop_rate */ - s->avctx->time_base.num = get_bits(gb, s->time_increment_bits); - }else - s->avctx->time_base.num = 1; - - s->t_frame=0; - - if (s->shape != BIN_ONLY_SHAPE) { - if (s->shape == RECT_SHAPE) { - skip_bits1(gb); /* marker */ - width = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - height = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - if(width && height && !(s->width && s->codec_tag == AV_RL32("MP4S"))){ /* they should be non zero but who knows ... */ - s->width = width; - s->height = height; - } - } - - s->progressive_sequence= - s->progressive_frame= get_bits1(gb)^1; - s->interlaced_dct=0; - if(!get_bits1(gb) && (s->avctx->debug & FF_DEBUG_PICT_INFO)) - av_log(s->avctx, AV_LOG_INFO, "MPEG4 OBMC not supported (very likely buggy encoder)\n"); /* OBMC Disable */ - if (vo_ver_id == 1) { - s->vol_sprite_usage = get_bits1(gb); /* vol_sprite_usage */ - } else { - s->vol_sprite_usage = get_bits(gb, 2); /* vol_sprite_usage */ - } - if(s->vol_sprite_usage==STATIC_SPRITE) av_log(s->avctx, AV_LOG_ERROR, "Static Sprites not supported\n"); - if(s->vol_sprite_usage==STATIC_SPRITE || s->vol_sprite_usage==GMC_SPRITE){ - if(s->vol_sprite_usage==STATIC_SPRITE){ - s->sprite_width = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - s->sprite_height= get_bits(gb, 13); - skip_bits1(gb); /* marker */ - s->sprite_left = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - s->sprite_top = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - } - s->num_sprite_warping_points= get_bits(gb, 6); - if(s->num_sprite_warping_points > 3){ - av_log(s->avctx, AV_LOG_ERROR, "%d sprite_warping_points\n", s->num_sprite_warping_points); - s->num_sprite_warping_points= 0; - return -1; - } - s->sprite_warping_accuracy = get_bits(gb, 2); - s->sprite_brightness_change= get_bits1(gb); - if(s->vol_sprite_usage==STATIC_SPRITE) - s->low_latency_sprite= get_bits1(gb); - } - // FIXME sadct disable bit if verid!=1 && shape not rect - - if (get_bits1(gb) == 1) { /* not_8_bit */ - s->quant_precision = get_bits(gb, 4); /* quant_precision */ - if(get_bits(gb, 4)!=8) av_log(s->avctx, AV_LOG_ERROR, "N-bit not supported\n"); /* bits_per_pixel */ - if(s->quant_precision!=5) av_log(s->avctx, AV_LOG_ERROR, "quant precision %d\n", s->quant_precision); - } else { - s->quant_precision = 5; - } - - // FIXME a bunch of grayscale shape things - - if((s->mpeg_quant=get_bits1(gb))){ /* vol_quant_type */ - int i, v; - - /* load default matrixes */ - for(i=0; i<64; i++){ - int j= s->dsp.idct_permutation[i]; - v= ff_mpeg4_default_intra_matrix[i]; - s->intra_matrix[j]= v; - s->chroma_intra_matrix[j]= v; - - v= ff_mpeg4_default_non_intra_matrix[i]; - s->inter_matrix[j]= v; - s->chroma_inter_matrix[j]= v; - } - - /* load custom intra matrix */ - if(get_bits1(gb)){ - int last=0; - for(i=0; i<64; i++){ - int j; - v= get_bits(gb, 8); - if(v==0) break; - - last= v; - j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ]; - s->intra_matrix[j]= v; - s->chroma_intra_matrix[j]= v; - } - - /* replicate last value */ - for(; i<64; i++){ - int j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ]; - s->intra_matrix[j]= last; - s->chroma_intra_matrix[j]= last; - } - } - - /* load custom non intra matrix */ - if(get_bits1(gb)){ - int last=0; - for(i=0; i<64; i++){ - int j; - v= get_bits(gb, 8); - if(v==0) break; - - last= v; - j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ]; - s->inter_matrix[j]= v; - s->chroma_inter_matrix[j]= v; - } - - /* replicate last value */ - for(; i<64; i++){ - int j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ]; - s->inter_matrix[j]= last; - s->chroma_inter_matrix[j]= last; - } - } - - // FIXME a bunch of grayscale shape things - } - - if(vo_ver_id != 1) - s->quarter_sample= get_bits1(gb); - else s->quarter_sample=0; - - if(!get_bits1(gb)){ - int pos= get_bits_count(gb); - int estimation_method= get_bits(gb, 2); - if(estimation_method<2){ - if(!get_bits1(gb)){ - s->cplx_estimation_trash_i += 8*get_bits1(gb); //opaque - s->cplx_estimation_trash_i += 8*get_bits1(gb); //transparent - s->cplx_estimation_trash_i += 8*get_bits1(gb); //intra_cae - s->cplx_estimation_trash_i += 8*get_bits1(gb); //inter_cae - s->cplx_estimation_trash_i += 8*get_bits1(gb); //no_update - s->cplx_estimation_trash_i += 8*get_bits1(gb); //upampling - } - if(!get_bits1(gb)){ - s->cplx_estimation_trash_i += 8*get_bits1(gb); //intra_blocks - s->cplx_estimation_trash_p += 8*get_bits1(gb); //inter_blocks - s->cplx_estimation_trash_p += 8*get_bits1(gb); //inter4v_blocks - s->cplx_estimation_trash_i += 8*get_bits1(gb); //not coded blocks - } - if(!check_marker(gb, "in complexity estimation part 1")){ - skip_bits_long(gb, pos - get_bits_count(gb)); - goto no_cplx_est; - } - if(!get_bits1(gb)){ - s->cplx_estimation_trash_i += 8*get_bits1(gb); //dct_coeffs - s->cplx_estimation_trash_i += 8*get_bits1(gb); //dct_lines - s->cplx_estimation_trash_i += 8*get_bits1(gb); //vlc_syms - s->cplx_estimation_trash_i += 4*get_bits1(gb); //vlc_bits - } - if(!get_bits1(gb)){ - s->cplx_estimation_trash_p += 8*get_bits1(gb); //apm - s->cplx_estimation_trash_p += 8*get_bits1(gb); //npm - s->cplx_estimation_trash_b += 8*get_bits1(gb); //interpolate_mc_q - s->cplx_estimation_trash_p += 8*get_bits1(gb); //forwback_mc_q - s->cplx_estimation_trash_p += 8*get_bits1(gb); //halfpel2 - s->cplx_estimation_trash_p += 8*get_bits1(gb); //halfpel4 - } - if(!check_marker(gb, "in complexity estimation part 2")){ - skip_bits_long(gb, pos - get_bits_count(gb)); - goto no_cplx_est; - } - if(estimation_method==1){ - s->cplx_estimation_trash_i += 8*get_bits1(gb); //sadct - s->cplx_estimation_trash_p += 8*get_bits1(gb); //qpel - } - }else - av_log(s->avctx, AV_LOG_ERROR, "Invalid Complexity estimation method %d\n", estimation_method); - }else{ -no_cplx_est: - s->cplx_estimation_trash_i= - s->cplx_estimation_trash_p= - s->cplx_estimation_trash_b= 0; - } - - s->resync_marker= !get_bits1(gb); /* resync_marker_disabled */ - - s->data_partitioning= get_bits1(gb); - if(s->data_partitioning){ - s->rvlc= get_bits1(gb); - } - - if(vo_ver_id != 1) { - s->new_pred= get_bits1(gb); - if(s->new_pred){ - av_log(s->avctx, AV_LOG_ERROR, "new pred not supported\n"); - skip_bits(gb, 2); /* requested upstream message type */ - skip_bits1(gb); /* newpred segment type */ - } - s->reduced_res_vop= get_bits1(gb); - if(s->reduced_res_vop) av_log(s->avctx, AV_LOG_ERROR, "reduced resolution VOP not supported\n"); - } - else{ - s->new_pred=0; - s->reduced_res_vop= 0; - } - - s->scalability= get_bits1(gb); - - if (s->scalability) { - GetBitContext bak= *gb; - int ref_layer_id; - int ref_layer_sampling_dir; - int h_sampling_factor_n; - int h_sampling_factor_m; - int v_sampling_factor_n; - int v_sampling_factor_m; - - s->hierachy_type= get_bits1(gb); - ref_layer_id= get_bits(gb, 4); - ref_layer_sampling_dir= get_bits1(gb); - h_sampling_factor_n= get_bits(gb, 5); - h_sampling_factor_m= get_bits(gb, 5); - v_sampling_factor_n= get_bits(gb, 5); - v_sampling_factor_m= get_bits(gb, 5); - s->enhancement_type= get_bits1(gb); - - if( h_sampling_factor_n==0 || h_sampling_factor_m==0 - || v_sampling_factor_n==0 || v_sampling_factor_m==0){ - /* illegal scalability header (VERY broken encoder), - * trying to workaround */ - s->scalability=0; - *gb= bak; - }else - av_log(s->avctx, AV_LOG_ERROR, "scalability not supported\n"); - - // bin shape stuff FIXME - } - } - return 0; -} - -/** - * decodes the user data stuff in the header. - * Also initializes divx/xvid/lavc_version/build. - */ -static int decode_user_data(MpegEncContext *s, GetBitContext *gb){ - char buf[256]; - int i; - int e; - int ver = 0, build = 0, ver2 = 0, ver3 = 0; - char last; - - for(i=0; i<255 && get_bits_count(gb) < gb->size_in_bits; i++){ - if(show_bits(gb, 23) == 0) break; - buf[i]= get_bits(gb, 8); - } - buf[i]=0; - - /* divx detection */ - e=sscanf(buf, "DivX%dBuild%d%c", &ver, &build, &last); - if(e<2) - e=sscanf(buf, "DivX%db%d%c", &ver, &build, &last); - if(e>=2){ - s->divx_version= ver; - s->divx_build= build; - s->divx_packed= e==3 && last=='p'; - if(s->divx_packed && !s->showed_packed_warning) { - av_log(s->avctx, AV_LOG_WARNING, "Invalid and inefficient vfw-avi packed B frames detected\n"); - s->showed_packed_warning=1; - } - } - - /* ffmpeg detection */ - e=sscanf(buf, "FFmpe%*[^b]b%d", &build)+3; - if(e!=4) - e=sscanf(buf, "FFmpeg v%d.%d.%d / libavcodec build: %d", &ver, &ver2, &ver3, &build); - if(e!=4){ - e=sscanf(buf, "Lavc%d.%d.%d", &ver, &ver2, &ver3)+1; - if (e>1) - build= (ver<<16) + (ver2<<8) + ver3; - } - if(e!=4){ - if(strcmp(buf, "ffmpeg")==0){ - s->lavc_build= 4600; - } - } - if(e==4){ - s->lavc_build= build; - } - - /* Xvid detection */ - e=sscanf(buf, "XviD%d", &build); - if(e==1){ - s->xvid_build= build; - } - - return 0; -} - -static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){ - int time_incr, time_increment; - - s->pict_type = get_bits(gb, 2) + FF_I_TYPE; /* pict type: I = 0 , P = 1 */ - if(s->pict_type==FF_B_TYPE && s->low_delay && s->vol_control_parameters==0 && !(s->flags & CODEC_FLAG_LOW_DELAY)){ - av_log(s->avctx, AV_LOG_ERROR, "low_delay flag incorrectly, clearing it\n"); - s->low_delay=0; - } - - s->partitioned_frame= s->data_partitioning && s->pict_type!=FF_B_TYPE; - if(s->partitioned_frame) - s->decode_mb= mpeg4_decode_partitioned_mb; - else - s->decode_mb= ff_mpeg4_decode_mb; - - time_incr=0; - while (get_bits1(gb) != 0) - time_incr++; - - check_marker(gb, "before time_increment"); - - if(s->time_increment_bits==0 || !(show_bits(gb, s->time_increment_bits+1)&1)){ - av_log(s->avctx, AV_LOG_ERROR, "hmm, seems the headers are not complete, trying to guess time_increment_bits\n"); - - for(s->time_increment_bits=1 ;s->time_increment_bits<16; s->time_increment_bits++){ - if ( s->pict_type == FF_P_TYPE - || (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) { - if((show_bits(gb, s->time_increment_bits+6)&0x37) == 0x30) break; - }else - if((show_bits(gb, s->time_increment_bits+5)&0x1F) == 0x18) break; - } - - av_log(s->avctx, AV_LOG_ERROR, "my guess is %d bits ;)\n",s->time_increment_bits); - } - - if(IS_3IV1) time_increment= get_bits1(gb); //FIXME investigate further - else time_increment= get_bits(gb, s->time_increment_bits); - - if(s->pict_type!=FF_B_TYPE){ - s->last_time_base= s->time_base; - s->time_base+= time_incr; - s->time= s->time_base*s->avctx->time_base.den + time_increment; - if(s->workaround_bugs&FF_BUG_UMP4){ - if(s->time < s->last_non_b_time){ - /* header is not mpeg-4-compatible, broken encoder, - * trying to workaround */ - s->time_base++; - s->time+= s->avctx->time_base.den; - } - } - s->pp_time= s->time - s->last_non_b_time; - s->last_non_b_time= s->time; - }else{ - s->time= (s->last_time_base + time_incr)*s->avctx->time_base.den + time_increment; - s->pb_time= s->pp_time - (s->last_non_b_time - s->time); - if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){ - /* messed up order, maybe after seeking? skipping current b-frame */ - return FRAME_SKIPPED; - } - ff_mpeg4_init_direct_mv(s); - - if(s->t_frame==0) s->t_frame= s->pb_time; - if(s->t_frame==0) s->t_frame=1; // 1/0 protection - s->pp_field_time= ( ROUNDED_DIV(s->last_non_b_time, s->t_frame) - - ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2; - s->pb_field_time= ( ROUNDED_DIV(s->time, s->t_frame) - - ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2; - if(!s->progressive_sequence){ - if(s->pp_field_time <= s->pb_field_time || s->pb_field_time <= 1) - return FRAME_SKIPPED; - } - } - - if(s->avctx->time_base.num) - s->current_picture_ptr->pts= (s->time + s->avctx->time_base.num/2) / s->avctx->time_base.num; - else - s->current_picture_ptr->pts= AV_NOPTS_VALUE; - if(s->avctx->debug&FF_DEBUG_PTS) - av_log(s->avctx, AV_LOG_DEBUG, "MPEG4 PTS: %"PRId64"\n", s->current_picture_ptr->pts); - - check_marker(gb, "before vop_coded"); - - /* vop coded */ - if (get_bits1(gb) != 1){ - if(s->avctx->debug&FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_ERROR, "vop not coded\n"); - return FRAME_SKIPPED; - } - if (s->shape != BIN_ONLY_SHAPE && ( s->pict_type == FF_P_TYPE - || (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE))) { - /* rounding type for motion estimation */ - s->no_rounding = get_bits1(gb); - } else { - s->no_rounding = 0; - } -//FIXME reduced res stuff - - if (s->shape != RECT_SHAPE) { - if (s->vol_sprite_usage != 1 || s->pict_type != FF_I_TYPE) { - int width, height, hor_spat_ref, ver_spat_ref; - - width = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - height = get_bits(gb, 13); - skip_bits1(gb); /* marker */ - hor_spat_ref = get_bits(gb, 13); /* hor_spat_ref */ - skip_bits1(gb); /* marker */ - ver_spat_ref = get_bits(gb, 13); /* ver_spat_ref */ - } - skip_bits1(gb); /* change_CR_disable */ - - if (get_bits1(gb) != 0) { - skip_bits(gb, 8); /* constant_alpha_value */ - } - } -//FIXME complexity estimation stuff - - if (s->shape != BIN_ONLY_SHAPE) { - skip_bits_long(gb, s->cplx_estimation_trash_i); - if(s->pict_type != FF_I_TYPE) - skip_bits_long(gb, s->cplx_estimation_trash_p); - if(s->pict_type == FF_B_TYPE) - skip_bits_long(gb, s->cplx_estimation_trash_b); - - s->intra_dc_threshold= mpeg4_dc_threshold[ get_bits(gb, 3) ]; - if(!s->progressive_sequence){ - s->top_field_first= get_bits1(gb); - s->alternate_scan= get_bits1(gb); - }else - s->alternate_scan= 0; - } - - 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); - ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_vertical_scan); - ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan); - } 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); - ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan); - ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan); - } - - if(s->pict_type == FF_S_TYPE && (s->vol_sprite_usage==STATIC_SPRITE || s->vol_sprite_usage==GMC_SPRITE)){ - mpeg4_decode_sprite_trajectory(s, gb); - if(s->sprite_brightness_change) av_log(s->avctx, AV_LOG_ERROR, "sprite_brightness_change not supported\n"); - if(s->vol_sprite_usage==STATIC_SPRITE) av_log(s->avctx, AV_LOG_ERROR, "static sprite not supported\n"); - } - - if (s->shape != BIN_ONLY_SHAPE) { - s->chroma_qscale= s->qscale = get_bits(gb, s->quant_precision); - if(s->qscale==0){ - av_log(s->avctx, AV_LOG_ERROR, "Error, header damaged or not MPEG4 header (qscale=0)\n"); - return -1; // makes no sense to continue, as there is nothing left from the image then - } - - if (s->pict_type != FF_I_TYPE) { - s->f_code = get_bits(gb, 3); /* fcode_for */ - if(s->f_code==0){ - av_log(s->avctx, AV_LOG_ERROR, "Error, header damaged or not MPEG4 header (f_code=0)\n"); - return -1; // makes no sense to continue, as the MV decoding will break very quickly - } - }else - s->f_code=1; - - if (s->pict_type == FF_B_TYPE) { - s->b_code = get_bits(gb, 3); - }else - s->b_code=1; - - if(s->avctx->debug&FF_DEBUG_PICT_INFO){ - av_log(s->avctx, AV_LOG_DEBUG, "qp:%d fc:%d,%d %s size:%d pro:%d alt:%d top:%d %spel part:%d resync:%d w:%d a:%d rnd:%d vot:%d%s dc:%d ce:%d/%d/%d\n", - s->qscale, s->f_code, s->b_code, - s->pict_type == FF_I_TYPE ? "I" : (s->pict_type == FF_P_TYPE ? "P" : (s->pict_type == FF_B_TYPE ? "B" : "S")), - gb->size_in_bits,s->progressive_sequence, s->alternate_scan, s->top_field_first, - s->quarter_sample ? "q" : "h", s->data_partitioning, s->resync_marker, s->num_sprite_warping_points, - s->sprite_warping_accuracy, 1-s->no_rounding, s->vo_type, s->vol_control_parameters ? " VOLC" : " ", s->intra_dc_threshold, s->cplx_estimation_trash_i, s->cplx_estimation_trash_p, s->cplx_estimation_trash_b); - } - - if(!s->scalability){ - if (s->shape!=RECT_SHAPE && s->pict_type!=FF_I_TYPE) { - skip_bits1(gb); // vop shape coding type - } - }else{ - if(s->enhancement_type){ - int load_backward_shape= get_bits1(gb); - if(load_backward_shape){ - av_log(s->avctx, AV_LOG_ERROR, "load backward shape isn't supported\n"); - } - } - skip_bits(gb, 2); //ref_select_code - } - } - /* detect buggy encoders which don't set the low_delay flag (divx4/xvid/opendivx)*/ - // note we cannot detect divx5 without b-frames easily (although it's buggy too) - if(s->vo_type==0 && s->vol_control_parameters==0 && s->divx_version==0 && s->picture_number==0){ - av_log(s->avctx, AV_LOG_ERROR, "looks like this file was encoded with (divx4/(old)xvid/opendivx) -> forcing low_delay flag\n"); - s->low_delay=1; - } - - s->picture_number++; // better than pic number==0 always ;) - - s->y_dc_scale_table= ff_mpeg4_y_dc_scale_table; //FIXME add short header support - s->c_dc_scale_table= ff_mpeg4_c_dc_scale_table; - - if(s->workaround_bugs&FF_BUG_EDGE){ - s->h_edge_pos= s->width; - s->v_edge_pos= s->height; - } - return 0; -} - -/** - * decode mpeg4 headers - * @return <0 if no VOP found (or a damaged one) - * FRAME_SKIPPED if a not coded VOP is found - * 0 if a VOP is found - */ -int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb) -{ - int startcode, v; - - /* search next start code */ - align_get_bits(gb); - - if(s->codec_tag == AV_RL32("WV1F") && show_bits(gb, 24) == 0x575630){ - skip_bits(gb, 24); - if(get_bits(gb, 8) == 0xF0) - goto end; - } - - startcode = 0xff; - for(;;) { - if(get_bits_count(gb) >= gb->size_in_bits){ - if(gb->size_in_bits==8 && (s->divx_version || s->xvid_build)){ - av_log(s->avctx, AV_LOG_ERROR, "frame skip %d\n", gb->size_in_bits); - return FRAME_SKIPPED; //divx bug - }else - return -1; //end of stream - } - - /* use the bits after the test */ - v = get_bits(gb, 8); - startcode = ((startcode << 8) | v) & 0xffffffff; - - if((startcode&0xFFFFFF00) != 0x100) - continue; //no startcode - - if(s->avctx->debug&FF_DEBUG_STARTCODE){ - av_log(s->avctx, AV_LOG_DEBUG, "startcode: %3X ", startcode); - if (startcode<=0x11F) av_log(s->avctx, AV_LOG_DEBUG, "Video Object Start"); - else if(startcode<=0x12F) av_log(s->avctx, AV_LOG_DEBUG, "Video Object Layer Start"); - else if(startcode<=0x13F) av_log(s->avctx, AV_LOG_DEBUG, "Reserved"); - else if(startcode<=0x15F) av_log(s->avctx, AV_LOG_DEBUG, "FGS bp start"); - else if(startcode<=0x1AF) av_log(s->avctx, AV_LOG_DEBUG, "Reserved"); - else if(startcode==0x1B0) av_log(s->avctx, AV_LOG_DEBUG, "Visual Object Seq Start"); - else if(startcode==0x1B1) av_log(s->avctx, AV_LOG_DEBUG, "Visual Object Seq End"); - else if(startcode==0x1B2) av_log(s->avctx, AV_LOG_DEBUG, "User Data"); - else if(startcode==0x1B3) av_log(s->avctx, AV_LOG_DEBUG, "Group of VOP start"); - else if(startcode==0x1B4) av_log(s->avctx, AV_LOG_DEBUG, "Video Session Error"); - else if(startcode==0x1B5) av_log(s->avctx, AV_LOG_DEBUG, "Visual Object Start"); - else if(startcode==0x1B6) av_log(s->avctx, AV_LOG_DEBUG, "Video Object Plane start"); - else if(startcode==0x1B7) av_log(s->avctx, AV_LOG_DEBUG, "slice start"); - else if(startcode==0x1B8) av_log(s->avctx, AV_LOG_DEBUG, "extension start"); - else if(startcode==0x1B9) av_log(s->avctx, AV_LOG_DEBUG, "fgs start"); - else if(startcode==0x1BA) av_log(s->avctx, AV_LOG_DEBUG, "FBA Object start"); - else if(startcode==0x1BB) av_log(s->avctx, AV_LOG_DEBUG, "FBA Object Plane start"); - else if(startcode==0x1BC) av_log(s->avctx, AV_LOG_DEBUG, "Mesh Object start"); - else if(startcode==0x1BD) av_log(s->avctx, AV_LOG_DEBUG, "Mesh Object Plane start"); - else if(startcode==0x1BE) av_log(s->avctx, AV_LOG_DEBUG, "Still Texture Object start"); - else if(startcode==0x1BF) av_log(s->avctx, AV_LOG_DEBUG, "Texture Spatial Layer start"); - else if(startcode==0x1C0) av_log(s->avctx, AV_LOG_DEBUG, "Texture SNR Layer start"); - else if(startcode==0x1C1) av_log(s->avctx, AV_LOG_DEBUG, "Texture Tile start"); - else if(startcode==0x1C2) av_log(s->avctx, AV_LOG_DEBUG, "Texture Shape Layer start"); - else if(startcode==0x1C3) av_log(s->avctx, AV_LOG_DEBUG, "stuffing start"); - else if(startcode<=0x1C5) av_log(s->avctx, AV_LOG_DEBUG, "reserved"); - else if(startcode<=0x1FF) av_log(s->avctx, AV_LOG_DEBUG, "System start"); - av_log(s->avctx, AV_LOG_DEBUG, " at %d\n", get_bits_count(gb)); - } - - if(startcode >= 0x120 && startcode <= 0x12F){ - if(decode_vol_header(s, gb) < 0) - return -1; - } - else if(startcode == USER_DATA_STARTCODE){ - decode_user_data(s, gb); - } - else if(startcode == GOP_STARTCODE){ - mpeg4_decode_gop_header(s, gb); - } - else if(startcode == VOP_STARTCODE){ - break; - } - - align_get_bits(gb); - startcode = 0xff; - } -end: - if(s->flags& CODEC_FLAG_LOW_DELAY) - s->low_delay=1; - s->avctx->has_b_frames= !s->low_delay; - return decode_vop_header(s, gb); -} |