build: Group general components separate from de/encoders in arch Makefiles
[ffmpeg.git] / libavcodec / mpeg4videodec.c
index 32ffbb8..9405a02 100644 (file)
@@ -22,6 +22,7 @@
 
 #include "error_resilience.h"
 #include "internal.h"
+#include "mpegutils.h"
 #include "mpegvideo.h"
 #include "mpeg4video.h"
 #include "h263.h"
@@ -172,7 +173,7 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
     if (w <= 0 || h <= 0)
         return AVERROR_INVALIDDATA;
 
-    for (i = 0; i < s->num_sprite_warping_points; i++) {
+    for (i = 0; i < ctx->num_sprite_warping_points; i++) {
         int length;
         int x = 0, y = 0;
 
@@ -188,11 +189,11 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
             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;
+        ctx->sprite_traj[i][0] = d[i][0] = x;
+        ctx->sprite_traj[i][1] = d[i][1] = y;
     }
     for (; i < 4; i++)
-        s->sprite_traj[i][0] = s->sprite_traj[i][1] = 0;
+        ctx->sprite_traj[i][0] = ctx->sprite_traj[i][1] = 0;
 
     while ((1 << alpha) < w)
         alpha++;
@@ -240,7 +241,7 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
                         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) {
+    switch (ctx->num_sprite_warping_points) {
     case 0:
         s->sprite_offset[0][0] =
         s->sprite_offset[0][1] =
@@ -250,8 +251,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
         s->sprite_delta[0][1]  =
         s->sprite_delta[1][0]  = 0;
         s->sprite_delta[1][1]  = a;
-        s->sprite_shift[0]     =
-        s->sprite_shift[1]     = 0;
+        ctx->sprite_shift[0]   =
+        ctx->sprite_shift[1]   = 0;
         break;
     case 1:     // GMC only
         s->sprite_offset[0][0] = sprite_ref[0][0] - a * vop_ref[0][0];
@@ -264,8 +265,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
         s->sprite_delta[0][1]  =
         s->sprite_delta[1][0]  = 0;
         s->sprite_delta[1][1]  = a;
-        s->sprite_shift[0]     =
-        s->sprite_shift[1]     = 0;
+        ctx->sprite_shift[0]   =
+        ctx->sprite_shift[1]   = 0;
         break;
     case 2:
         s->sprite_offset[0][0] = (sprite_ref[0][0] << (alpha + rho)) +
@@ -293,8 +294,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
         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;
+        ctx->sprite_shift[0]  = alpha + rho;
+        ctx->sprite_shift[1]  = alpha + rho + 2;
         break;
     case 3:
         min_ab = FFMIN(alpha, beta);
@@ -329,37 +330,37 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
         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;
+        ctx->sprite_shift[0]  = alpha + beta + rho - min_ab;
+        ctx->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] &&
+    if (s->sprite_delta[0][0] == a << ctx->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[1][1] == a << ctx->sprite_shift[0]) {
+        s->sprite_offset[0][0] >>= ctx->sprite_shift[0];
+        s->sprite_offset[0][1] >>= ctx->sprite_shift[0];
+        s->sprite_offset[1][0] >>= ctx->sprite_shift[1];
+        s->sprite_offset[1][1] >>= ctx->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;
+        ctx->sprite_shift[0] = 0;
+        ctx->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];
+        int shift_y = 16 - ctx->sprite_shift[0];
+        int shift_c = 16 - ctx->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;
+            ctx->sprite_shift[i]     = 16;
         }
-        s->real_sprite_warping_points = s->num_sprite_warping_points;
+        s->real_sprite_warping_points = ctx->num_sprite_warping_points;
     }
 
     return 0;
@@ -493,7 +494,7 @@ static inline int get_amv(Mpeg4DecContext *ctx, int n)
     } else {
         dx    = s->sprite_delta[n][0];
         dy    = s->sprite_delta[n][1];
-        shift = s->sprite_shift[0];
+        shift = ctx->sprite_shift[0];
         if (n)
             dy -= 1 << (shift + a + 1);
         else
@@ -925,9 +926,10 @@ int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx)
  * Decode a block.
  * @return <0 if an error occurred
  */
-static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
+static inline int mpeg4_decode_block(Mpeg4DecContext *ctx, int16_t *block,
                                      int n, int coded, int intra, int rvlc)
 {
+    MpegEncContext *s = &ctx->m;
     int level, i, last, run, qmul, qadd, dc_pred_dir;
     RLTable *rl;
     RL_VLC_ELEM *rl_vlc;
@@ -936,7 +938,7 @@ static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
     // Note intra & rvlc should be optimized away if this is inlined
 
     if (intra) {
-        if (s->use_intra_dc_vlc) {
+        if (ctx->use_intra_dc_vlc) {
             /* DC coef */
             if (s->partitioned_frame) {
                 level = s->dc_val[0][s->block_index[n]];
@@ -1151,7 +1153,7 @@ static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
 
 not_coded:
     if (intra) {
-        if (!s->use_intra_dc_vlc) {
+        if (!ctx->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;
@@ -1178,7 +1180,7 @@ static int mpeg4_decode_partitioned_mb(MpegEncContext *s, int16_t block[6][64])
     mb_type = s->current_picture.mb_type[xy];
     cbp     = s->cbp_table[xy];
 
-    s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
+    ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
 
     if (s->current_picture.qscale_table[xy] != s->qscale)
         ff_set_qscale(s, s->current_picture.qscale_table[xy]);
@@ -1228,7 +1230,7 @@ static int mpeg4_decode_partitioned_mb(MpegEncContext *s, int16_t block[6][64])
         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, ctx->rvlc) < 0) {
+            if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, s->mb_intra, ctx->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);
@@ -1576,7 +1578,7 @@ intra:
         }
         cbp = (cbpc & 3) | (cbpy << 2);
 
-        s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
+        ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
 
         if (dquant)
             ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]);
@@ -1587,7 +1589,7 @@ intra:
         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)
+            if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 1, 0) < 0)
                 return -1;
             cbp += cbp;
         }
@@ -1596,7 +1598,7 @@ intra:
 
     /* decode each block */
     for (i = 0; i < 6; i++) {
-        if (mpeg4_decode_block(s, block[i], i, cbp & 32, 0, 0) < 0)
+        if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 0, 0) < 0)
             return -1;
         cbp += cbp;
     }
@@ -1780,16 +1782,16 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
                 skip_bits(gb, 13); // sprite_top
                 skip_bits1(gb); /* marker */
             }
-            s->num_sprite_warping_points = get_bits(gb, 6);
-            if (s->num_sprite_warping_points > 3) {
+            ctx->num_sprite_warping_points = get_bits(gb, 6);
+            if (ctx->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;
+                       ctx->num_sprite_warping_points);
+                ctx->num_sprite_warping_points = 0;
                 return -1;
             }
             s->sprite_warping_accuracy  = get_bits(gb, 2);
-            s->sprite_brightness_change = get_bits1(gb);
+            ctx->sprite_brightness_change = get_bits1(gb);
             if (ctx->vol_sprite_usage == STATIC_SPRITE)
                 skip_bits1(gb); // low_latency_sprite
         }
@@ -1953,9 +1955,9 @@ no_cplx_est:
             ctx->new_pred = 0;
         }
 
-        s->scalability = get_bits1(gb);
+        ctx->scalability = get_bits1(gb);
 
-        if (s->scalability) {
+        if (ctx->scalability) {
             GetBitContext bak = *gb;
             int h_sampling_factor_n;
             int h_sampling_factor_m;
@@ -1969,13 +1971,13 @@ no_cplx_est:
             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);
+            ctx->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;
+                ctx->scalability = 0;
                 *gb            = bak;
             } else
                 av_log(s->avctx, AV_LOG_ERROR, "scalability not supported\n");
@@ -2015,10 +2017,10 @@ static int decode_user_data(Mpeg4DecContext *ctx, GetBitContext *gb)
         ctx->divx_version = ver;
         ctx->divx_build   = build;
         s->divx_packed  = e == 3 && last == 'p';
-        if (s->divx_packed && !s->showed_packed_warning) {
+        if (s->divx_packed && !ctx->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;
+            ctx->showed_packed_warning = 1;
         }
     }
 
@@ -2043,6 +2045,35 @@ static int decode_user_data(Mpeg4DecContext *ctx, GetBitContext *gb)
     if (e == 1)
         ctx->xvid_build = build;
 
+    if (ctx->xvid_build == -1 && ctx->divx_version == -1 && ctx->lavc_build == -1) {
+        if (s->stream_codec_tag == AV_RL32("XVID") ||
+            s->codec_tag        == AV_RL32("XVID") ||
+            s->codec_tag        == AV_RL32("XVIX") ||
+            s->codec_tag        == AV_RL32("RMP4") ||
+            s->codec_tag        == AV_RL32("ZMP4") ||
+            s->codec_tag        == AV_RL32("SIPP"))
+            ctx->xvid_build = 0;
+    }
+
+    if (ctx->xvid_build == -1 && ctx->divx_version == -1 && ctx->lavc_build == -1)
+        if (s->codec_tag == AV_RL32("DIVX") && s->vo_type == 0 &&
+            s->vol_control_parameters == 0)
+            ctx->divx_version = 400;  // divx 4
+
+    if (ctx->xvid_build >= 0 && ctx->divx_version >= 0) {
+        ctx->divx_version =
+        ctx->divx_build   = -1;
+    }
+
+#if HAVE_MMX
+    if (ctx->xvid_build >= 0                &&
+        s->avctx->idct_algo == FF_IDCT_AUTO &&
+        (av_get_cpu_flags() & AV_CPU_FLAG_MMX)) {
+        s->avctx->idct_algo = FF_IDCT_XVIDMMX;
+        ff_dct_common_init(s);
+    }
+#endif
+
     return 0;
 }
 
@@ -2179,7 +2210,7 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
         if (s->pict_type == AV_PICTURE_TYPE_B)
             skip_bits_long(gb, ctx->cplx_estimation_trash_b);
 
-        s->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
+        ctx->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
         if (!s->progressive_sequence) {
             s->top_field_first = get_bits1(gb);
             s->alternate_scan  = get_bits1(gb);
@@ -2204,7 +2235,7 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
          ctx->vol_sprite_usage == GMC_SPRITE)) {
         if (mpeg4_decode_sprite_trajectory(ctx, gb) < 0)
             return AVERROR_INVALIDDATA;
-        if (s->sprite_brightness_change)
+        if (ctx->sprite_brightness_change)
             av_log(s->avctx, AV_LOG_ERROR,
                    "sprite_brightness_change not supported\n");
         if (ctx->vol_sprite_usage == STATIC_SPRITE)
@@ -2242,18 +2273,18 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
                    gb->size_in_bits, s->progressive_sequence, s->alternate_scan,
                    s->top_field_first, s->quarter_sample ? "q" : "h",
                    s->data_partitioning, ctx->resync_marker,
-                   s->num_sprite_warping_points, s->sprite_warping_accuracy,
+                   ctx->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->vol_control_parameters ? " VOLC" : " ", ctx->intra_dc_threshold,
                    ctx->cplx_estimation_trash_i, ctx->cplx_estimation_trash_p,
                    ctx->cplx_estimation_trash_b);
         }
 
-        if (!s->scalability) {
+        if (!ctx->scalability) {
             if (ctx->shape != RECT_SHAPE && s->pict_type != AV_PICTURE_TYPE_I)
                 skip_bits1(gb);  // vop shape coding type
         } else {
-            if (s->enhancement_type) {
+            if (ctx->enhancement_type) {
                 int load_backward_shape = get_bits1(gb);
                 if (load_backward_shape)
                     av_log(s->avctx, AV_LOG_ERROR,
@@ -2404,26 +2435,6 @@ end:
         s->low_delay = 1;
     s->avctx->has_b_frames = !s->low_delay;
 
-    if (ctx->xvid_build == -1 && ctx->divx_version == -1 && ctx->lavc_build == -1) {
-        if (s->stream_codec_tag == AV_RL32("XVID") ||
-            s->codec_tag        == AV_RL32("XVID") ||
-            s->codec_tag        == AV_RL32("XVIX") ||
-            s->codec_tag        == AV_RL32("RMP4") ||
-            s->codec_tag        == AV_RL32("ZMP4") ||
-            s->codec_tag        == AV_RL32("SIPP"))
-            ctx->xvid_build = 0;
-    }
-
-    if (ctx->xvid_build == -1 && ctx->divx_version == -1 && ctx->lavc_build == -1)
-        if (s->codec_tag == AV_RL32("DIVX") && s->vo_type == 0 &&
-            s->vol_control_parameters == 0)
-            ctx->divx_version = 400;  // divx 4
-
-    if (ctx->xvid_build >= 0 && ctx->divx_version >= 0) {
-        ctx->divx_version =
-        ctx->divx_build   = -1;
-    }
-
     if (s->workaround_bugs & FF_BUG_AUTODETECT) {
         if (s->codec_tag == AV_RL32("XVIX"))
             s->workaround_bugs |= FF_BUG_XVID_ILACE;
@@ -2474,15 +2485,6 @@ end:
             s->workaround_bugs |= FF_BUG_HPEL_CHROMA;
     }
 
-#if HAVE_MMX
-    if (s->codec_id == AV_CODEC_ID_MPEG4 && ctx->xvid_build >= 0 &&
-        s->avctx->idct_algo == FF_IDCT_AUTO &&
-        (av_get_cpu_flags() & AV_CPU_FLAG_MMX)) {
-        s->avctx->idct_algo = FF_IDCT_XVIDMMX;
-        ff_dct_common_init(s);
-        s->picture_number = 0;
-    }
-#endif
 
     if (s->avctx->debug & FF_DEBUG_BUGS)
         av_log(s->avctx, AV_LOG_DEBUG,