Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavf: fix multiplication overflow in avformat_find_stream_info()
  cosmetics: indentation
  mpegaudiodec: init static tables in AVCodec.init_static_data()

Conflicts:
	libavcodec/mpegaudiodec.c
	libavformat/utils.c

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

2 files changed, 182 insertions, 178 deletions

diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index f7f2644370..875d1c8af1 100644
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -269,213 +269,207 @@ static inline int l3_unscale(int value, int exponent)
     return m;
 }
 
-static av_cold int decode_init(AVCodecContext * avctx)
+static void decode_init_static(AVCodec *codec)
 {
-    MPADecodeContext *s = avctx->priv_data;
-    static int init = 0;
     int i, j, k;
+    int offset;
+
+    /* scale factors table for layer 1/2 */
+    for (i = 0; i < 64; i++) {
+        int shift, mod;
+        /* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */
+        shift = i / 3;
+        mod   = i % 3;
+        scale_factor_modshift[i] = mod | (shift << 2);
+    }
 
-    s->avctx = avctx;
-
-    ff_mpadsp_init(&s->mpadsp);
-
-    avctx->sample_fmt= OUT_FMT;
-    s->err_recognition = avctx->err_recognition;
-
-#if FF_API_PARSE_FRAME
-    if (!init && !avctx->parse_only) {
-#else
-    if (!init) {
-#endif
-        int offset;
-
-        /* scale factors table for layer 1/2 */
-        for (i = 0; i < 64; i++) {
-            int shift, mod;
-            /* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */
-            shift = i / 3;
-            mod   = i % 3;
-            scale_factor_modshift[i] = mod | (shift << 2);
-        }
-
-        /* scale factor multiply for layer 1 */
-        for (i = 0; i < 15; i++) {
-            int n, norm;
-            n = i + 2;
-            norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1);
-            scale_factor_mult[i][0] = MULLx(norm, FIXR(1.0          * 2.0), FRAC_BITS);
-            scale_factor_mult[i][1] = MULLx(norm, FIXR(0.7937005259 * 2.0), FRAC_BITS);
-            scale_factor_mult[i][2] = MULLx(norm, FIXR(0.6299605249 * 2.0), FRAC_BITS);
-            av_dlog(avctx, "%d: norm=%x s=%x %x %x\n", i, norm,
-                    scale_factor_mult[i][0],
-                    scale_factor_mult[i][1],
-                    scale_factor_mult[i][2]);
-        }
+    /* scale factor multiply for layer 1 */
+    for (i = 0; i < 15; i++) {
+        int n, norm;
+        n = i + 2;
+        norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1);
+        scale_factor_mult[i][0] = MULLx(norm, FIXR(1.0          * 2.0), FRAC_BITS);
+        scale_factor_mult[i][1] = MULLx(norm, FIXR(0.7937005259 * 2.0), FRAC_BITS);
+        scale_factor_mult[i][2] = MULLx(norm, FIXR(0.6299605249 * 2.0), FRAC_BITS);
+        av_dlog(NULL, "%d: norm=%x s=%x %x %x\n", i, norm,
+                scale_factor_mult[i][0],
+                scale_factor_mult[i][1],
+                scale_factor_mult[i][2]);
+    }
 
-        RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window));
+    RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window));
 
-        /* huffman decode tables */
-        offset = 0;
-        for (i = 1; i < 16; i++) {
-            const HuffTable *h = &mpa_huff_tables[i];
-            int xsize, x, y;
-            uint8_t  tmp_bits [512];
-            uint16_t tmp_codes[512];
+    /* huffman decode tables */
+    offset = 0;
+    for (i = 1; i < 16; i++) {
+        const HuffTable *h = &mpa_huff_tables[i];
+        int xsize, x, y;
+        uint8_t  tmp_bits [512];
+        uint16_t tmp_codes[512];
 
-            memset(tmp_bits , 0, sizeof(tmp_bits ));
-            memset(tmp_codes, 0, sizeof(tmp_codes));
+        memset(tmp_bits , 0, sizeof(tmp_bits ));
+        memset(tmp_codes, 0, sizeof(tmp_codes));
 
-            xsize = h->xsize;
+        xsize = h->xsize;
 
-            j = 0;
-            for (x = 0; x < xsize; x++) {
-                for (y = 0; y < xsize; y++) {
-                    tmp_bits [(x << 5) | y | ((x&&y)<<4)]= h->bits [j  ];
-                    tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++];
-                }
+        j = 0;
+        for (x = 0; x < xsize; x++) {
+            for (y = 0; y < xsize; y++) {
+                tmp_bits [(x << 5) | y | ((x&&y)<<4)]= h->bits [j  ];
+                tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++];
             }
-
-            /* XXX: fail test */
-            huff_vlc[i].table = huff_vlc_tables+offset;
-            huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i];
-            init_vlc(&huff_vlc[i], 7, 512,
-                     tmp_bits, 1, 1, tmp_codes, 2, 2,
-                     INIT_VLC_USE_NEW_STATIC);
-            offset += huff_vlc_tables_sizes[i];
-        }
-        assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables));
-
-        offset = 0;
-        for (i = 0; i < 2; i++) {
-            huff_quad_vlc[i].table = huff_quad_vlc_tables+offset;
-            huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i];
-            init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16,
-                     mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1,
-                     INIT_VLC_USE_NEW_STATIC);
-            offset += huff_quad_vlc_tables_sizes[i];
         }
-        assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables));
 
-        for (i = 0; i < 9; i++) {
-            k = 0;
-            for (j = 0; j < 22; j++) {
-                band_index_long[i][j] = k;
-                k += band_size_long[i][j];
-            }
-            band_index_long[i][22] = k;
+        /* XXX: fail test */
+        huff_vlc[i].table = huff_vlc_tables+offset;
+        huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i];
+        init_vlc(&huff_vlc[i], 7, 512,
+                 tmp_bits, 1, 1, tmp_codes, 2, 2,
+                 INIT_VLC_USE_NEW_STATIC);
+        offset += huff_vlc_tables_sizes[i];
+    }
+    assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables));
+
+    offset = 0;
+    for (i = 0; i < 2; i++) {
+        huff_quad_vlc[i].table = huff_quad_vlc_tables+offset;
+        huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i];
+        init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16,
+                 mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1,
+                 INIT_VLC_USE_NEW_STATIC);
+        offset += huff_quad_vlc_tables_sizes[i];
+    }
+    assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables));
+
+    for (i = 0; i < 9; i++) {
+        k = 0;
+        for (j = 0; j < 22; j++) {
+            band_index_long[i][j] = k;
+            k += band_size_long[i][j];
         }
+        band_index_long[i][22] = k;
+    }
 
-        /* compute n ^ (4/3) and store it in mantissa/exp format */
-
-        mpegaudio_tableinit();
-
-        for (i = 0; i < 4; i++) {
-            if (ff_mpa_quant_bits[i] < 0) {
-                for (j = 0; j < (1 << (-ff_mpa_quant_bits[i]+1)); j++) {
-                    int val1, val2, val3, steps;
-                    int val = j;
-                    steps   = ff_mpa_quant_steps[i];
-                    val1    = val % steps;
-                    val    /= steps;
-                    val2    = val % steps;
-                    val3    = val / steps;
-                    division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8);
-                }
+    /* compute n ^ (4/3) and store it in mantissa/exp format */
+
+    mpegaudio_tableinit();
+
+    for (i = 0; i < 4; i++) {
+        if (ff_mpa_quant_bits[i] < 0) {
+            for (j = 0; j < (1 << (-ff_mpa_quant_bits[i]+1)); j++) {
+                int val1, val2, val3, steps;
+                int val = j;
+                steps   = ff_mpa_quant_steps[i];
+                val1    = val % steps;
+                val    /= steps;
+                val2    = val % steps;
+                val3    = val / steps;
+                division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8);
             }
         }
+    }
 
 
-        for (i = 0; i < 7; i++) {
-            float f;
-            INTFLOAT v;
-            if (i != 6) {
-                f = tan((double)i * M_PI / 12.0);
-                v = FIXR(f / (1.0 + f));
-            } else {
-                v = FIXR(1.0);
-            }
-            is_table[0][    i] = v;
-            is_table[1][6 - i] = v;
+    for (i = 0; i < 7; i++) {
+        float f;
+        INTFLOAT v;
+        if (i != 6) {
+            f = tan((double)i * M_PI / 12.0);
+            v = FIXR(f / (1.0 + f));
+        } else {
+            v = FIXR(1.0);
         }
-        /* invalid values */
-        for (i = 7; i < 16; i++)
-            is_table[0][i] = is_table[1][i] = 0.0;
-
-        for (i = 0; i < 16; i++) {
-            double f;
-            int e, k;
-
-            for (j = 0; j < 2; j++) {
-                e = -(j + 1) * ((i + 1) >> 1);
-                f = pow(2.0, e / 4.0);
-                k = i & 1;
-                is_table_lsf[j][k ^ 1][i] = FIXR(f);
-                is_table_lsf[j][k    ][i] = FIXR(1.0);
-                av_dlog(avctx, "is_table_lsf %d %d: %f %f\n",
-                        i, j, (float) is_table_lsf[j][0][i],
-                        (float) is_table_lsf[j][1][i]);
-            }
+        is_table[0][    i] = v;
+        is_table[1][6 - i] = v;
+    }
+    /* invalid values */
+    for (i = 7; i < 16; i++)
+        is_table[0][i] = is_table[1][i] = 0.0;
+
+    for (i = 0; i < 16; i++) {
+        double f;
+        int e, k;
+
+        for (j = 0; j < 2; j++) {
+            e = -(j + 1) * ((i + 1) >> 1);
+            f = pow(2.0, e / 4.0);
+            k = i & 1;
+            is_table_lsf[j][k ^ 1][i] = FIXR(f);
+            is_table_lsf[j][k    ][i] = FIXR(1.0);
+            av_dlog(NULL, "is_table_lsf %d %d: %f %f\n",
+                    i, j, (float) is_table_lsf[j][0][i],
+                    (float) is_table_lsf[j][1][i]);
         }
+    }
 
-        for (i = 0; i < 8; i++) {
-            float ci, cs, ca;
-            ci = ci_table[i];
-            cs = 1.0 / sqrt(1.0 + ci * ci);
-            ca = cs * ci;
+    for (i = 0; i < 8; i++) {
+        float ci, cs, ca;
+        ci = ci_table[i];
+        cs = 1.0 / sqrt(1.0 + ci * ci);
+        ca = cs * ci;
 #if !CONFIG_FLOAT
-            csa_table[i][0] = FIXHR(cs/4);
-            csa_table[i][1] = FIXHR(ca/4);
-            csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4);
-            csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4);
+        csa_table[i][0] = FIXHR(cs/4);
+        csa_table[i][1] = FIXHR(ca/4);
+        csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4);
+        csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4);
 #else
-            csa_table[i][0] = cs;
-            csa_table[i][1] = ca;
-            csa_table[i][2] = ca + cs;
-            csa_table[i][3] = ca - cs;
+        csa_table[i][0] = cs;
+        csa_table[i][1] = ca;
+        csa_table[i][2] = ca + cs;
+        csa_table[i][3] = ca - cs;
 #endif
-        }
-
-        /* compute mdct windows */
-        for (i = 0; i < 36; i++) {
-            for (j = 0; j < 4; j++) {
-                double d;
-
-                if (j == 2 && i % 3 != 1)
-                    continue;
-
-                d = sin(M_PI * (i + 0.5) / 36.0);
-                if (j == 1) {
-                    if      (i >= 30) d = 0;
-                    else if (i >= 24) d = sin(M_PI * (i - 18 + 0.5) / 12.0);
-                    else if (i >= 18) d = 1;
-                } else if (j == 3) {
-                    if      (i <   6) d = 0;
-                    else if (i <  12) d = sin(M_PI * (i -  6 + 0.5) / 12.0);
-                    else if (i <  18) d = 1;
-                }
-                //merge last stage of imdct into the window coefficients
-                d *= 0.5 / cos(M_PI * (2 * i + 19) / 72);
-
-                if (j == 2)
-                    mdct_win[j][i/3] = FIXHR((d / (1<<5)));
-                else {
-                    int idx = i < 18 ? i : i + 2;
-                    mdct_win[j][idx] = FIXHR((d / (1<<5)));
-                }
-            }
-        }
+    }
 
-        /* NOTE: we do frequency inversion adter the MDCT by changing
-           the sign of the right window coefs */
+    /* compute mdct windows */
+    for (i = 0; i < 36; i++) {
         for (j = 0; j < 4; j++) {
-            for (i = 0; i < 40; i += 2) {
-                mdct_win[j + 4][i    ] =  mdct_win[j][i    ];
-                mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1];
+            double d;
+
+            if (j == 2 && i % 3 != 1)
+                continue;
+
+            d = sin(M_PI * (i + 0.5) / 36.0);
+            if (j == 1) {
+                if      (i >= 30) d = 0;
+                else if (i >= 24) d = sin(M_PI * (i - 18 + 0.5) / 12.0);
+                else if (i >= 18) d = 1;
+            } else if (j == 3) {
+                if      (i <   6) d = 0;
+                else if (i <  12) d = sin(M_PI * (i -  6 + 0.5) / 12.0);
+                else if (i <  18) d = 1;
+            }
+            //merge last stage of imdct into the window coefficients
+            d *= 0.5 / cos(M_PI * (2 * i + 19) / 72);
+
+            if (j == 2)
+                mdct_win[j][i/3] = FIXHR((d / (1<<5)));
+            else {
+                int idx = i < 18 ? i : i + 2;
+                mdct_win[j][idx] = FIXHR((d / (1<<5)));
             }
         }
+    }
 
-        init = 1;
+    /* NOTE: we do frequency inversion adter the MDCT by changing
+        the sign of the right window coefs */
+    for (j = 0; j < 4; j++) {
+        for (i = 0; i < 40; i += 2) {
+            mdct_win[j + 4][i    ] =  mdct_win[j][i    ];
+            mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1];
+        }
     }
+}
+
+static av_cold int decode_init(AVCodecContext * avctx)
+{
+    MPADecodeContext *s = avctx->priv_data;
+
+    s->avctx = avctx;
+
+    ff_mpadsp_init(&s->mpadsp);
+
+    avctx->sample_fmt= OUT_FMT;
+    s->err_recognition = avctx->err_recognition;
 
     if (avctx->codec_id == CODEC_ID_MP3ADU)
         s->adu_mode = 1;
@@ -2002,6 +1996,7 @@ AVCodec ff_mp1_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP1,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -2017,6 +2012,7 @@ AVCodec ff_mp2_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP2,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -2032,6 +2028,7 @@ AVCodec ff_mp3_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -2047,6 +2044,7 @@ AVCodec ff_mp3adu_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3ADU,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame_adu,
 #if FF_API_PARSE_FRAME
@@ -2062,6 +2060,7 @@ AVCodec ff_mp3on4_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3ON4,
     .priv_data_size = sizeof(MP3On4DecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init_mp3on4,
     .close          = decode_close_mp3on4,
     .decode         = decode_frame_mp3on4,
diff --git a/libavcodec/mpegaudiodec_float.c b/libavcodec/mpegaudiodec_float.c
index 4482168a3e..a0bc7696bf 100644
--- a/libavcodec/mpegaudiodec_float.c
+++ b/libavcodec/mpegaudiodec_float.c
@@ -28,6 +28,7 @@ AVCodec ff_mp1float_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP1,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -43,6 +44,7 @@ AVCodec ff_mp2float_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP2,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -58,6 +60,7 @@ AVCodec ff_mp3float_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame,
 #if FF_API_PARSE_FRAME
@@ -73,6 +76,7 @@ AVCodec ff_mp3adufloat_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3ADU,
     .priv_data_size = sizeof(MPADecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init,
     .decode         = decode_frame_adu,
 #if FF_API_PARSE_FRAME
@@ -88,6 +92,7 @@ AVCodec ff_mp3on4float_decoder = {
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = CODEC_ID_MP3ON4,
     .priv_data_size = sizeof(MP3On4DecodeContext),
+    .init_static_data = decode_init_static,
     .init           = decode_init_mp3on4,
     .close          = decode_close_mp3on4,
     .decode         = decode_frame_mp3on4,