innoHeim/Rsupport Screen Capture Codec decoder
[ffmpeg.git] / libavcodec / mpeg12dec.c
index 49b7d1e..be20414 100644 (file)
  * MPEG-1/2 decoder
  */
 
+#include <inttypes.h>
+
 #include "libavutil/attributes.h"
 #include "libavutil/internal.h"
 #include "libavutil/stereo3d.h"
-#include "internal.h"
+
 #include "avcodec.h"
-#include "dsputil.h"
-#include "mpegvideo.h"
+#include "bytestream.h"
 #include "error_resilience.h"
+#include "idctdsp.h"
+#include "internal.h"
+#include "mpeg_er.h"
 #include "mpeg12.h"
 #include "mpeg12data.h"
-#include "bytestream.h"
-#include "xvmc_internal.h"
+#include "mpegutils.h"
+#include "mpegvideo.h"
+#include "mpegvideodata.h"
 #include "thread.h"
 #include "version.h"
+#include "xvmc_internal.h"
 
 typedef struct Mpeg1Context {
     MpegEncContext mpeg_enc_ctx;
     int mpeg_enc_ctx_allocated; /* true if decoding context allocated */
-    int repeat_field; /* true if we must repeat the field */
-    AVPanScan pan_scan;              /**< some temporary storage for the panscan */
+    int repeat_field;           /* true if we must repeat the field */
+    AVPanScan pan_scan;         /* some temporary storage for the panscan */
+    AVStereo3D stereo3d;
+    int has_stereo3d;
     uint8_t *a53_caption;
     int a53_caption_size;
+    uint8_t afd;
+    int has_afd;
     int slice_count;
     int save_aspect_info;
     int save_width, save_height, save_progressive_seq;
-    AVRational frame_rate_ext;       ///< MPEG-2 specific framerate modificator
-    int sync;                        ///< Did we reach a sync point like a GOP/SEQ/KEYFrame?
-    int closed_gop;                  ///< GOP is closed
+    AVRational frame_rate_ext;  /* MPEG-2 specific framerate modificator */
+    int sync;                   /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */
+    int closed_gop;             /* GOP is closed */
     int first_slice;
     int extradata_decoded;
 } Mpeg1Context;
@@ -84,10 +94,10 @@ static const uint32_t btype2mb_type[11] = {
 };
 
 static const uint8_t non_linear_qscale[32] = {
-    0, 1, 2, 3, 4, 5, 6, 7,
-    8,10,12,14,16,18,20,22,
-    24,28,32,36,40,44,48,52,
-    56,64,72,80,88,96,104,112,
+     0,  1,  2,  3,  4,  5,   6,   7,
+     8, 10, 12, 14, 16, 18,  20,  22,
+    24, 28, 32, 36, 40, 44,  48,  52,
+    56, 64, 72, 80, 88, 96, 104, 112,
 };
 
 /* as H.263, but only 17 codes */
@@ -96,12 +106,10 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
     int code, sign, val, shift;
 
     code = get_vlc2(&s->gb, ff_mv_vlc.table, MV_VLC_BITS, 2);
-    if (code == 0) {
+    if (code == 0)
         return pred;
-    }
-    if (code < 0) {
+    if (code < 0)
         return 0xffff;
-    }
 
     sign  = get_bits1(&s->gb);
     shift = fcode - 1;
@@ -119,12 +127,22 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
     return sign_extend(val, 5 + shift);
 }
 
-static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n)
+#define check_scantable_index(ctx, x)                                         \
+    do {                                                                      \
+        if ((x) > 63) {                                                       \
+            av_log(ctx->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n",     \
+                   ctx->mb_x, ctx->mb_y);                                     \
+            return AVERROR_INVALIDDATA;                                       \
+        }                                                                     \
+    } while (0)
+
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+                                           int16_t *block, int n)
 {
     int level, dc, diff, i, j, run;
     int component;
-    RLTable *rl = &ff_rl_mpeg1;
-    uint8_t * const scantable    = s->intra_scantable.permutated;
+    RLTable *rl                  = &ff_rl_mpeg1;
+    uint8_t *const scantable     = s->intra_scantable.permutated;
     const uint16_t *quant_matrix = s->intra_matrix;
     const int qscale             = s->qscale;
 
@@ -132,40 +150,48 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, in
     component = (n <= 3 ? 0 : n - 4 + 1);
     diff = decode_dc(&s->gb, component);
     if (diff >= 0xffff)
-        return -1;
+        return AVERROR_INVALIDDATA;
     dc  = s->last_dc[component];
     dc += diff;
     s->last_dc[component] = dc;
     block[0] = dc * quant_matrix[0];
-    av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
+    ff_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
     i = 0;
     {
         OPEN_READER(re, &s->gb);
         /* now quantify & encode AC coefficients */
         for (;;) {
             UPDATE_CACHE(re, &s->gb);
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level == 127) {
                 break;
             } else if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
                 level = (level - 1) | 1;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 LAST_SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+                level = SHOW_SBITS(re, &s->gb, 8);
+                SKIP_BITS(re, &s->gb, 8);
                 if (level == -128) {
-                    level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8) - 256;
+                    LAST_SKIP_BITS(re, &s->gb, 8);
                 } else if (level == 0) {
-                    level = SHOW_UBITS(re, &s->gb, 8)      ; LAST_SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8);
+                    LAST_SKIP_BITS(re, &s->gb, 8);
                 }
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = -level;
@@ -177,17 +203,13 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, in
                     level = (level - 1) | 1;
                 }
             }
-            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[j] = level;
         }
         CLOSE_READER(re, &s->gb);
     }
     s->block_last_index[n] = i;
-   return 0;
+    return 0;
 }
 
 int ff_mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n)
@@ -195,11 +217,12 @@ int ff_mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n)
     return mpeg1_decode_block_intra(s, block, n);
 }
 
-static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, int n)
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+                                           int16_t *block, int n)
 {
     int level, i, j, run;
-    RLTable *rl = &ff_rl_mpeg1;
-    uint8_t * const scantable    = s->intra_scantable.permutated;
+    RLTable *rl                  = &ff_rl_mpeg1;
+    uint8_t *const scantable     = s->intra_scantable.permutated;
     const uint16_t *quant_matrix = s->inter_matrix;
     const int qscale             = s->qscale;
 
@@ -208,7 +231,7 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, in
         i = -1;
         // special case for first coefficient, no need to add second VLC table
         UPDATE_CACHE(re, &s->gb);
-        if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+        if (((int32_t) GET_CACHE(re, &s->gb)) < 0) {
             level = (3 * qscale * quant_matrix[0]) >> 5;
             level = (level - 1) | 1;
             if (GET_CACHE(re, &s->gb) & 0x40000000)
@@ -216,31 +239,39 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, in
             block[0] = level;
             i++;
             SKIP_BITS(re, &s->gb, 2);
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 goto end;
         }
         /* now quantify & encode AC coefficients */
         for (;;) {
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
                 level = (level - 1) | 1;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+                level = SHOW_SBITS(re, &s->gb, 8);
+                SKIP_BITS(re, &s->gb, 8);
                 if (level == -128) {
-                    level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8) - 256;
+                    SKIP_BITS(re, &s->gb, 8);
                 } else if (level == 0) {
-                    level = SHOW_UBITS(re, &s->gb, 8)      ; SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8);
+                    SKIP_BITS(re, &s->gb, 8);
                 }
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = -level;
@@ -252,13 +283,9 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, in
                     level = (level - 1) | 1;
                 }
             }
-            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[j] = level;
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 break;
             UPDATE_CACHE(re, &s->gb);
         }
@@ -270,19 +297,20 @@ end:
     return 0;
 }
 
-static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, int16_t *block, int n)
+static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s,
+                                                int16_t *block, int n)
 {
     int level, i, j, run;
-    RLTable *rl = &ff_rl_mpeg1;
-    uint8_t * const scantable = s->intra_scantable.permutated;
-    const int qscale          = s->qscale;
+    RLTable *rl              = &ff_rl_mpeg1;
+    uint8_t *const scantable = s->intra_scantable.permutated;
+    const int qscale         = s->qscale;
 
     {
         OPEN_READER(re, &s->gb);
         i = -1;
-        // special case for first coefficient, no need to add second VLC table
+        // Special case for first coefficient, no need to add second VLC table.
         UPDATE_CACHE(re, &s->gb);
-        if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+        if (((int32_t) GET_CACHE(re, &s->gb)) < 0) {
             level = (3 * qscale) >> 1;
             level = (level - 1) | 1;
             if (GET_CACHE(re, &s->gb) & 0x40000000)
@@ -290,32 +318,40 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, int16_t *bloc
             block[0] = level;
             i++;
             SKIP_BITS(re, &s->gb, 2);
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 goto end;
         }
 
         /* now quantify & encode AC coefficients */
         for (;;) {
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = ((level * 2 + 1) * qscale) >> 1;
                 level = (level - 1) | 1;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
+                level = SHOW_SBITS(re, &s->gb, 8);
+                SKIP_BITS(re, &s->gb, 8);
                 if (level == -128) {
-                    level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8) - 256;
+                    SKIP_BITS(re, &s->gb, 8);
                 } else if (level == 0) {
-                    level = SHOW_UBITS(re, &s->gb, 8)      ; SKIP_BITS(re, &s->gb, 8);
+                    level = SHOW_UBITS(re, &s->gb, 8);
+                    SKIP_BITS(re, &s->gb, 8);
                 }
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = -level;
@@ -329,7 +365,7 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, int16_t *bloc
             }
 
             block[j] = level;
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 break;
             UPDATE_CACHE(re, &s->gb);
         }
@@ -341,12 +377,12 @@ end:
     return 0;
 }
 
-
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, int16_t *block, int n)
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
+                                               int16_t *block, int n)
 {
     int level, i, j, run;
     RLTable *rl = &ff_rl_mpeg1;
-    uint8_t * const scantable = s->intra_scantable.permutated;
+    uint8_t *const scantable = s->intra_scantable.permutated;
     const uint16_t *quant_matrix;
     const int qscale = s->qscale;
     int mismatch;
@@ -361,37 +397,43 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, int16_t *block
         else
             quant_matrix = s->chroma_inter_matrix;
 
-        // special case for first coefficient, no need to add second VLC table
+        // Special case for first coefficient, no need to add second VLC table.
         UPDATE_CACHE(re, &s->gb);
-        if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
-            level= (3 * qscale * quant_matrix[0]) >> 5;
+        if (((int32_t) GET_CACHE(re, &s->gb)) < 0) {
+            level = (3 * qscale * quant_matrix[0]) >> 5;
             if (GET_CACHE(re, &s->gb) & 0x40000000)
                 level = -level;
             block[0]  = level;
             mismatch ^= level;
             i++;
             SKIP_BITS(re, &s->gb, 2);
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 goto end;
         }
 
         /* now quantify & encode AC coefficients */
         for (;;) {
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+                level = SHOW_SBITS(re, &s->gb, 12);
+                SKIP_BITS(re, &s->gb, 12);
 
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
@@ -400,14 +442,10 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, int16_t *block
                     level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
                 }
             }
-            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;
-            }
 
             mismatch ^= level;
             block[j]  = level;
-            if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+            if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
                 break;
             UPDATE_CACHE(re, &s->gb);
         }
@@ -425,22 +463,22 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
                                                     int16_t *block, int n)
 {
     int level, i, j, run;
-    RLTable *rl = &ff_rl_mpeg1;
-    uint8_t * const scantable = s->intra_scantable.permutated;
-    const int qscale          = s->qscale;
+    RLTable *rl              = &ff_rl_mpeg1;
+    uint8_t *const scantable = s->intra_scantable.permutated;
+    const int qscale         = s->qscale;
     OPEN_READER(re, &s->gb);
     i = -1;
 
     // special case for first coefficient, no need to add second VLC table
     UPDATE_CACHE(re, &s->gb);
-    if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
+    if (((int32_t) GET_CACHE(re, &s->gb)) < 0) {
         level = (3 * qscale) >> 1;
         if (GET_CACHE(re, &s->gb) & 0x40000000)
             level = -level;
         block[0] = level;
         i++;
         SKIP_BITS(re, &s->gb, 2);
-        if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+        if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
             goto end;
     }
 
@@ -450,18 +488,23 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
 
         if (level != 0) {
             i += run;
-            j  = scantable[i];
+            check_scantable_index(s, i);
+            j = scantable[i];
             level = ((level * 2 + 1) * qscale) >> 1;
-            level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+            level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                    SHOW_SBITS(re, &s->gb, 1);
             SKIP_BITS(re, &s->gb, 1);
         } else {
             /* escape */
-            run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+            run = SHOW_UBITS(re, &s->gb, 6) + 1;
+            LAST_SKIP_BITS(re, &s->gb, 6);
             UPDATE_CACHE(re, &s->gb);
-            level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+            level = SHOW_SBITS(re, &s->gb, 12);
+            SKIP_BITS(re, &s->gb, 12);
 
             i += run;
-            j  = scantable[i];
+            check_scantable_index(s, i);
+            j = scantable[i];
             if (level < 0) {
                 level = ((-level * 2 + 1) * qscale) >> 1;
                 level = -level;
@@ -471,7 +514,7 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
         }
 
         block[j] = level;
-        if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+        if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
             break;
         UPDATE_CACHE(re, &s->gb);
     }
@@ -482,13 +525,13 @@ end:
     return 0;
 }
 
-
-static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, int n)
+static inline int mpeg2_decode_block_intra(MpegEncContext *s,
+                                           int16_t *block, int n)
 {
     int level, dc, diff, i, j, run;
     int component;
     RLTable *rl;
-    uint8_t * const scantable = s->intra_scantable.permutated;
+    uint8_t *const scantable = s->intra_scantable.permutated;
     const uint16_t *quant_matrix;
     const int qscale = s->qscale;
     int mismatch;
@@ -496,19 +539,19 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, in
     /* DC coefficient */
     if (n < 4) {
         quant_matrix = s->intra_matrix;
-        component = 0;
+        component    = 0;
     } else {
         quant_matrix = s->chroma_intra_matrix;
-        component = (n & 1) + 1;
+        component    = (n & 1) + 1;
     }
     diff = decode_dc(&s->gb, component);
     if (diff >= 0xffff)
-        return -1;
+        return AVERROR_INVALIDDATA;
     dc  = s->last_dc[component];
     dc += diff;
     s->last_dc[component] = dc;
     block[0] = dc << (3 - s->intra_dc_precision);
-    av_dlog(s->avctx, "dc=%d\n", block[0]);
+    ff_dlog(s->avctx, "dc=%d\n", block[0]);
     mismatch = block[0] ^ 1;
     i = 0;
     if (s->intra_vlc_format)
@@ -521,23 +564,29 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, in
         /* now quantify & encode AC coefficients */
         for (;;) {
             UPDATE_CACHE(re, &s->gb);
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level == 127) {
                 break;
             } else if (level != 0) {
                 i += run;
-                j  = scantable[i];
+                check_scantable_index(s, i);
+                j = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 LAST_SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
+                level = SHOW_SBITS(re, &s->gb, 12);
+                SKIP_BITS(re, &s->gb, 12);
                 i += run;
-                j  = scantable[i];
+                check_scantable_index(s, i);
+                j = scantable[i];
                 if (level < 0) {
                     level = (-level * qscale * quant_matrix[j]) >> 4;
                     level = -level;
@@ -545,10 +594,6 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, in
                     level = (level * qscale * quant_matrix[j]) >> 4;
                 }
             }
-            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;
-            }
 
             mismatch ^= level;
             block[j]  = level;
@@ -561,30 +606,32 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, int16_t *block, in
     return 0;
 }
 
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, int16_t *block, int n)
+static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
+                                                int16_t *block, int n)
 {
-    int level, dc, diff, j, run;
+    int level, dc, diff, i, j, run;
     int component;
     RLTable *rl;
-    uint8_t * scantable = s->intra_scantable.permutated;
+    uint8_t *const scantable = s->intra_scantable.permutated;
     const uint16_t *quant_matrix;
     const int qscale = s->qscale;
 
     /* DC coefficient */
     if (n < 4) {
         quant_matrix = s->intra_matrix;
-        component = 0;
+        component    = 0;
     } else {
         quant_matrix = s->chroma_intra_matrix;
-        component = (n & 1) + 1;
+        component    = (n & 1) + 1;
     }
     diff = decode_dc(&s->gb, component);
     if (diff >= 0xffff)
-        return -1;
+        return AVERROR_INVALIDDATA;
     dc = s->last_dc[component];
     dc += diff;
     s->last_dc[component] = dc;
     block[0] = dc << (3 - s->intra_dc_precision);
+    i = 0;
     if (s->intra_vlc_format)
         rl = &ff_rl_mpeg2;
     else
@@ -595,23 +642,29 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, int16_t *bloc
         /* now quantify & encode AC coefficients */
         for (;;) {
             UPDATE_CACHE(re, &s->gb);
-            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+            GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
+                       TEX_VLC_BITS, 2, 0);
 
             if (level == 127) {
                 break;
             } else if (level != 0) {
-                scantable += run;
-                j = *scantable;
+                i += run;
+                check_scantable_index(s, i);
+                j = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
-                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+                level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
+                        SHOW_SBITS(re, &s->gb, 1);
                 LAST_SKIP_BITS(re, &s->gb, 1);
             } else {
                 /* escape */
-                run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
+                run = SHOW_UBITS(re, &s->gb, 6) + 1;
+                LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
-                level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
-                scantable += run;
-                j = *scantable;
+                level = SHOW_SBITS(re, &s->gb, 12);
+                SKIP_BITS(re, &s->gb, 12);
+                i += run;
+                check_scantable_index(s, i);
+                j = scantable[i];
                 if (level < 0) {
                     level = (-level * qscale * quant_matrix[j]) >> 4;
                     level = -level;
@@ -625,7 +678,7 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, int16_t *bloc
         CLOSE_READER(re, &s->gb);
     }
 
-    s->block_last_index[n] = scantable - s->intra_scantable.permutated;
+    s->block_last_index[n] = i;
     return 0;
 }
 
@@ -643,11 +696,10 @@ static inline int get_dmv(MpegEncContext *s)
 static inline int get_qscale(MpegEncContext *s)
 {
     int qscale = get_bits(&s->gb, 5);
-    if (s->q_scale_type) {
+    if (s->q_scale_type)
         return non_linear_qscale[qscale];
-    } else {
+    else
         return qscale << 1;
-    }
 }
 
 /* motion type (for MPEG-2) */
@@ -660,25 +712,28 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
 {
     int i, j, k, cbp, val, mb_type, motion_type;
     const int mb_block_count = 4 + (1 << s->chroma_format);
+    int ret;
 
-    av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
+    ff_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
 
     assert(s->mb_skipped == 0);
 
     if (s->mb_skip_run-- != 0) {
         if (s->pict_type == AV_PICTURE_TYPE_P) {
             s->mb_skipped = 1;
-            s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
+            s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] =
+                MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
         } else {
             int mb_type;
 
             if (s->mb_x)
                 mb_type = s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1];
             else
-                mb_type = s->current_picture.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all
+                // FIXME not sure if this is allowed in MPEG at all
+                mb_type = s->current_picture.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1];
             if (IS_INTRA(mb_type))
-                return -1;
-            s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
+                return AVERROR_INVALIDDATA;
+            s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] =
                 mb_type | MB_TYPE_SKIP;
 //            assert(s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
 
@@ -694,8 +749,10 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
     case AV_PICTURE_TYPE_I:
         if (get_bits1(&s->gb) == 0) {
             if (get_bits1(&s->gb) == 0) {
-                av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "invalid mb type in I Frame at %d %d\n",
+                       s->mb_x, s->mb_y);
+                return AVERROR_INVALIDDATA;
             }
             mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA;
         } else {
@@ -705,34 +762,35 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
     case AV_PICTURE_TYPE_P:
         mb_type = get_vlc2(&s->gb, ff_mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1);
         if (mb_type < 0) {
-            av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
-            return -1;
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
+            return AVERROR_INVALIDDATA;
         }
         mb_type = ptype2mb_type[mb_type];
         break;
     case AV_PICTURE_TYPE_B:
         mb_type = get_vlc2(&s->gb, ff_mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1);
         if (mb_type < 0) {
-            av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
-            return -1;
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
+            return AVERROR_INVALIDDATA;
         }
         mb_type = btype2mb_type[mb_type];
         break;
     }
-    av_dlog(s->avctx, "mb_type=%x\n", mb_type);
+    ff_dlog(s->avctx, "mb_type=%x\n", mb_type);
 //    motion_type = 0; /* avoid warning */
     if (IS_INTRA(mb_type)) {
-        s->dsp.clear_blocks(s->block[0]);
+        s->bdsp.clear_blocks(s->block[0]);
 
-        if (!s->chroma_y_shift) {
-            s->dsp.clear_blocks(s->block[6]);
-        }
+        if (!s->chroma_y_shift)
+            s->bdsp.clear_blocks(s->block[6]);
 
         /* compute DCT type */
-        if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var?
-            !s->frame_pred_frame_dct) {
+        // FIXME: add an interlaced_dct coded var?
+        if (s->picture_structure == PICT_FRAME &&
+            !s->frame_pred_frame_dct)
             s->interlaced_dct = get_bits1(&s->gb);
-        }
 
         if (IS_QUANT(mb_type))
             s->qscale = get_qscale(s);
@@ -740,42 +798,44 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
         if (s->concealment_motion_vectors) {
             /* just parse them */
             if (s->picture_structure != PICT_FRAME)
-                skip_bits1(&s->gb); /* field select */
+                skip_bits1(&s->gb);  /* field select */
 
-            s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
-                mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]);
-            s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
-                mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
+            s->mv[0][0][0]      =
+            s->last_mv[0][0][0] =
+            s->last_mv[0][1][0] = mpeg_decode_motion(s, s->mpeg_f_code[0][0],
+                                                     s->last_mv[0][0][0]);
+            s->mv[0][0][1]      =
+            s->last_mv[0][0][1] =
+            s->last_mv[0][1][1] = mpeg_decode_motion(s, s->mpeg_f_code[0][1],
+                                                     s->last_mv[0][0][1]);
 
             skip_bits1(&s->gb); /* marker */
-        } else
-            memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
+        } else {
+            /* reset mv prediction */
+            memset(s->last_mv, 0, sizeof(s->last_mv));
+        }
         s->mb_intra = 1;
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
         // if 1, we memcpy blocks in xvmcvideo
-        if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+        if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
             ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
-        }
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
 
         if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
-            if (s->flags2 & CODEC_FLAG2_FAST) {
-                for (i = 0; i < 6; i++) {
+            if (s->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
+                for (i = 0; i < 6; i++)
                     mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
-                }
             } else {
-                for (i = 0; i < mb_block_count; i++) {
-                    if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
-                        return -1;
-                }
+                for (i = 0; i < mb_block_count; i++)
+                    if ((ret = mpeg2_decode_block_intra(s, *s->pblocks[i], i)) < 0)
+                        return ret;
             }
         } else {
-            for (i = 0; i < 6; i++) {
-                if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
-                    return -1;
-            }
+            for (i = 0; i < 6; i++)
+                if ((ret = mpeg1_decode_block_intra(s, *s->pblocks[i], i)) < 0)
+                    return ret;
         }
     } else {
         if (mb_type & MB_TYPE_ZERO_MV) {
@@ -787,8 +847,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     s->interlaced_dct = get_bits1(&s->gb);
                 s->mv_type = MV_TYPE_16X16;
             } else {
-                s->mv_type = MV_TYPE_FIELD;
-                mb_type |= MB_TYPE_INTERLACED;
+                s->mv_type            = MV_TYPE_FIELD;
+                mb_type              |= MB_TYPE_INTERLACED;
                 s->field_select[0][0] = s->picture_structure - 1;
             }
 
@@ -799,15 +859,15 @@ FF_ENABLE_DEPRECATION_WARNINGS
             s->last_mv[0][0][1] = 0;
             s->last_mv[0][1][0] = 0;
             s->last_mv[0][1][1] = 0;
-            s->mv[0][0][0] = 0;
-            s->mv[0][0][1] = 0;
+            s->mv[0][0][0]      = 0;
+            s->mv[0][0][1]      = 0;
         } else {
             assert(mb_type & MB_TYPE_L0L1);
             // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
             /* get additional motion vector type */
-            if (s->frame_pred_frame_dct)
+            if (s->frame_pred_frame_dct) {
                 motion_type = MT_FRAME;
-            else {
+            else {
                 motion_type = get_bits(&s->gb, 2);
                 if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
                     s->interlaced_dct = get_bits1(&s->gb);
@@ -818,19 +878,25 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
             /* motion vectors */
             s->mv_dir = (mb_type >> 13) & 3;
-            av_dlog(s->avctx, "motion_type=%d\n", motion_type);
+            ff_dlog(s->avctx, "motion_type=%d\n", motion_type);
             switch (motion_type) {
             case MT_FRAME: /* or MT_16X8 */
                 if (s->picture_structure == PICT_FRAME) {
-                    mb_type |= MB_TYPE_16x16;
+                    mb_type   |= MB_TYPE_16x16;
                     s->mv_type = MV_TYPE_16X16;
                     for (i = 0; i < 2; i++) {
                         if (USES_LIST(mb_type, i)) {
                             /* MT_FRAME */
-                            s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
-                                mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]);
-                            s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] =
-                                mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]);
+                            s->mv[i][0][0]      =
+                            s->last_mv[i][0][0] =
+                            s->last_mv[i][1][0] =
+                                mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+                                                   s->last_mv[i][0][0]);
+                            s->mv[i][0][1]      =
+                            s->last_mv[i][0][1] =
+                            s->last_mv[i][1][1] =
+                                mpeg_decode_motion(s, s->mpeg_f_code[i][1],
+                                                   s->last_mv[i][0][1]);
                             /* full_pel: only for MPEG-1 */
                             if (s->full_pel[i]) {
                                 s->mv[i][0][0] <<= 1;
@@ -839,7 +905,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                         }
                     }
                 } else {
-                    mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+                    mb_type   |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
                     s->mv_type = MV_TYPE_16X8;
                     for (i = 0; i < 2; i++) {
                         if (USES_LIST(mb_type, i)) {
@@ -869,12 +935,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
                                                          s->last_mv[i][j][0]);
                                 s->last_mv[i][j][0] = val;
                                 s->mv[i][j][0]      = val;
-                                av_dlog(s->avctx, "fmx=%d\n", val);
+                                ff_dlog(s->avctx, "fmx=%d\n", val);
                                 val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
                                                          s->last_mv[i][j][1] >> 1);
                                 s->last_mv[i][j][1] = val << 1;
                                 s->mv[i][j][1]      = val;
-                                av_dlog(s->avctx, "fmy=%d\n", val);
+                                ff_dlog(s->avctx, "fmy=%d\n", val);
                             }
                         }
                     }
@@ -945,52 +1011,52 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 }
                 break;
             default:
-                av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
+                return AVERROR_INVALIDDATA;
             }
         }
 
         s->mb_intra = 0;
         if (HAS_CBP(mb_type)) {
-            s->dsp.clear_blocks(s->block[0]);
+            s->bdsp.clear_blocks(s->block[0]);
 
             cbp = get_vlc2(&s->gb, ff_mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
             if (mb_block_count > 6) {
-                 cbp <<= mb_block_count - 6;
-                 cbp  |= get_bits(&s->gb, mb_block_count - 6);
-                 s->dsp.clear_blocks(s->block[6]);
+                cbp <<= mb_block_count - 6;
+                cbp  |= get_bits(&s->gb, mb_block_count - 6);
+                s->bdsp.clear_blocks(s->block[6]);
             }
             if (cbp <= 0) {
-                av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
+                return AVERROR_INVALIDDATA;
             }
 
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
-            //if 1, we memcpy blocks in xvmcvideo
-            if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
+            // if 1, we memcpy blocks in xvmcvideo
+            if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
                 ff_xvmc_pack_pblocks(s, cbp);
-            }
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
 
             if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
-                if (s->flags2 & CODEC_FLAG2_FAST) {
+                if (s->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
                     for (i = 0; i < 6; i++) {
-                        if (cbp & 32) {
+                        if (cbp & 32)
                             mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
-                        } else {
+                        else
                             s->block_last_index[i] = -1;
-                        }
                         cbp += cbp;
                     }
                 } else {
-                    cbp <<= 12-mb_block_count;
+                    cbp <<= 12 - mb_block_count;
 
                     for (i = 0; i < mb_block_count; i++) {
                         if (cbp & (1 << 11)) {
-                            if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
-                                return -1;
+                            if ((ret = mpeg2_decode_block_non_intra(s, *s->pblocks[i], i)) < 0)
+                                return ret;
                         } else {
                             s->block_last_index[i] = -1;
                         }
@@ -998,20 +1064,19 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     }
                 }
             } else {
-                if (s->flags2 & CODEC_FLAG2_FAST) {
+                if (s->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
                     for (i = 0; i < 6; i++) {
-                        if (cbp & 32) {
+                        if (cbp & 32)
                             mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
-                        } else {
+                        else
                             s->block_last_index[i] = -1;
-                        }
                         cbp += cbp;
                     }
                 } else {
                     for (i = 0; i < 6; i++) {
                         if (cbp & 32) {
-                            if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
-                                return -1;
+                            if ((ret = mpeg1_decode_block_inter(s, *s->pblocks[i], i)) < 0)
+                                return ret;
                         } else {
                             s->block_last_index[i] = -1;
                         }
@@ -1032,20 +1097,16 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
 static av_cold int mpeg_decode_init(AVCodecContext *avctx)
 {
-    Mpeg1Context *s = avctx->priv_data;
+    Mpeg1Context *s    = avctx->priv_data;
     MpegEncContext *s2 = &s->mpeg_enc_ctx;
-    int i;
 
-    /* we need some permutation to store matrices,
-     * until MPV_common_init() sets the real permutation. */
-    for (i = 0; i < 64; i++)
-       s2->dsp.idct_permutation[i]=i;
-
-    ff_MPV_decode_defaults(s2);
+    ff_mpv_decode_defaults(s2);
 
     s->mpeg_enc_ctx.avctx  = avctx;
-    s->mpeg_enc_ctx.flags  = avctx->flags;
-    s->mpeg_enc_ctx.flags2 = avctx->flags2;
+
+    /* we need some permutation to store matrices,
+     * until the decoder sets the real permutation. */
+    ff_mpv_idct_init(s2);
     ff_mpeg12_common_init(&s->mpeg_enc_ctx);
     ff_mpeg12_init_vlcs();
 
@@ -1053,7 +1114,7 @@ static av_cold int mpeg_decode_init(AVCodecContext *avctx)
     s->mpeg_enc_ctx.picture_number = 0;
     s->repeat_field                = 0;
     s->mpeg_enc_ctx.codec_id       = avctx->codec->id;
-    avctx->color_range = AVCOL_RANGE_MPEG;
+    avctx->color_range             = AVCOL_RANGE_MPEG;
     if (avctx->codec->id == AV_CODEC_ID_MPEG1VIDEO)
         avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
     else
@@ -1061,20 +1122,27 @@ static av_cold int mpeg_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-static int mpeg_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from)
+static int mpeg_decode_update_thread_context(AVCodecContext *avctx,
+                                             const AVCodecContext *avctx_from)
 {
     Mpeg1Context *ctx = avctx->priv_data, *ctx_from = avctx_from->priv_data;
     MpegEncContext *s = &ctx->mpeg_enc_ctx, *s1 = &ctx_from->mpeg_enc_ctx;
     int err;
 
-    if (avctx == avctx_from || !ctx_from->mpeg_enc_ctx_allocated || !s1->context_initialized)
+    if (avctx == avctx_from               ||
+        !ctx_from->mpeg_enc_ctx_allocated ||
+        !s1->context_initialized)
         return 0;
 
     err = ff_mpeg_update_thread_context(avctx, avctx_from);
-    if (err) return err;
+    if (err)
+        return err;
 
-    if (!ctx->mpeg_enc_ctx_allocated)
-        memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
+    if (!ctx->mpeg_enc_ctx_allocated) {
+        // copy the whole context after the initial MpegEncContext structure
+        memcpy(ctx, ctx_from, sizeof(*ctx));
+        memset(&ctx->mpeg_enc_ctx, 0, sizeof(ctx->mpeg_enc_ctx));
+    }
 
     if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
         s->picture_number++;
@@ -1090,22 +1158,25 @@ static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
 
     memcpy(temp_matrix, matrix, 64 * sizeof(uint16_t));
 
-    for (i = 0; i < 64; i++) {
+    for (i = 0; i < 64; i++)
         matrix[new_perm[i]] = temp_matrix[old_perm[i]];
-    }
 }
 
 #if FF_API_XVMC
 static const enum AVPixelFormat pixfmt_xvmc_mpg2_420[] = {
     AV_PIX_FMT_XVMC_MPEG2_IDCT,
     AV_PIX_FMT_XVMC_MPEG2_MC,
-    AV_PIX_FMT_NONE };
+    AV_PIX_FMT_NONE
+};
 #endif /* FF_API_XVMC */
 
 static const enum AVPixelFormat mpeg12_hwaccel_pixfmt_list_420[] = {
 #if CONFIG_MPEG2_DXVA2_HWACCEL
     AV_PIX_FMT_DXVA2_VLD,
 #endif
+#if CONFIG_MPEG2_D3D11VA_HWACCEL
+    AV_PIX_FMT_D3D11VA_VLD,
+#endif
 #if CONFIG_MPEG2_VAAPI_HWACCEL
     AV_PIX_FMT_VAAPI_VLD,
 #endif
@@ -1116,55 +1187,63 @@ static const enum AVPixelFormat mpeg12_hwaccel_pixfmt_list_420[] = {
     AV_PIX_FMT_NONE
 };
 
+static const enum AVPixelFormat mpeg12_pixfmt_list_422[] = {
+    AV_PIX_FMT_YUV422P,
+    AV_PIX_FMT_NONE
+};
+
+static const enum AVPixelFormat mpeg12_pixfmt_list_444[] = {
+    AV_PIX_FMT_YUV444P,
+    AV_PIX_FMT_NONE
+};
+
 static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
+    const enum AVPixelFormat *pix_fmts;
 
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
     if (avctx->xvmc_acceleration)
-        return avctx->get_format(avctx, pixfmt_xvmc_mpg2_420);
+        return ff_get_format(avctx, pixfmt_xvmc_mpg2_420);
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
 
-    if (s->chroma_format <  2)
-        return avctx->get_format(avctx, mpeg12_hwaccel_pixfmt_list_420);
+    if (s->chroma_format < 2)
+        pix_fmts = mpeg12_hwaccel_pixfmt_list_420;
     else if (s->chroma_format == 2)
-        return AV_PIX_FMT_YUV422P;
+        pix_fmts = mpeg12_pixfmt_list_422;
     else
-        return AV_PIX_FMT_YUV444P;
+        pix_fmts = mpeg12_pixfmt_list_444;
+
+    return ff_get_format(avctx, pix_fmts);
 }
 
 /* Call this function when we know all parameters.
  * It may be called in different places for MPEG-1 and MPEG-2. */
 static int mpeg_decode_postinit(AVCodecContext *avctx)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
     uint8_t old_permutation[64];
     int ret;
 
-    if ((s1->mpeg_enc_ctx_allocated == 0) ||
-        avctx->coded_width  != s->width   ||
-        avctx->coded_height != s->height  ||
+    if ((s1->mpeg_enc_ctx_allocated == 0)                   ||
+        avctx->coded_width       != s->width                ||
+        avctx->coded_height      != s->height               ||
         s1->save_width           != s->width                ||
         s1->save_height          != s->height               ||
         s1->save_aspect_info     != s->aspect_ratio_info    ||
         s1->save_progressive_seq != s->progressive_sequence ||
-        0)
-    {
-
+        0) {
         if (s1->mpeg_enc_ctx_allocated) {
             ParseContext pc = s->parse_context;
             s->parse_context.buffer = 0;
-            ff_MPV_common_end(s);
+            ff_mpv_common_end(s);
             s->parse_context = pc;
         }
 
-        if ((s->width == 0) || (s->height == 0))
-            return -2;
-
         ret = ff_set_dimensions(avctx, s->width, s->height);
         if (ret < 0)
             return ret;
@@ -1180,46 +1259,49 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
         avctx->has_b_frames = !s->low_delay;
 
         if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
-            //MPEG-1 fps
-            avctx->time_base.den = ff_mpeg12_frame_rate_tab[s->frame_rate_index].num;
-            avctx->time_base.num = ff_mpeg12_frame_rate_tab[s->frame_rate_index].den;
-            //MPEG-1 aspect
-            avctx->sample_aspect_ratio = av_d2q(1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255);
-            avctx->ticks_per_frame=1;
-        } else {//MPEG-2
-        //MPEG-2 fps
-            av_reduce(&s->avctx->time_base.den,
-                      &s->avctx->time_base.num,
-                      ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
+            // MPEG-1 fps
+            avctx->framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
+            // MPEG-1 aspect
+            avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255);
+            avctx->ticks_per_frame     = 1;
+        } else { // MPEG-2
+            // MPEG-2 fps
+            av_reduce(&s->avctx->framerate.num,
+                      &s->avctx->framerate.den,
+                      ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num * 2,
                       ff_mpeg12_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
                       1 << 30);
             avctx->ticks_per_frame = 2;
-            //MPEG-2 aspect
+            // MPEG-2 aspect
             if (s->aspect_ratio_info > 1) {
                 AVRational dar =
                     av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
-                                      (AVRational) {s1->pan_scan.width, s1->pan_scan.height}),
-                             (AVRational) {s->width, s->height});
-
-                // we ignore the spec here and guess a bit as reality does not match the spec, see for example
-                // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg
-                // issue1613, 621, 562
+                                      (AVRational) { s1->pan_scan.width,
+                                                     s1->pan_scan.height }),
+                             (AVRational) { s->width, s->height });
+
+                /* We ignore the spec here and guess a bit as reality does not
+                 * match the spec, see for example res_change_ffmpeg_aspect.ts
+                 * and sequence-display-aspect.mpg.
+                 * issue1613, 621, 562 */
                 if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) ||
-                   (av_cmp_q(dar, (AVRational) {4, 3}) && av_cmp_q(dar, (AVRational) {16, 9}))) {
+                    (av_cmp_q(dar, (AVRational) { 4, 3 }) &&
+                     av_cmp_q(dar, (AVRational) { 16, 9 }))) {
                     s->avctx->sample_aspect_ratio =
                         av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
-                                 (AVRational) {s->width, s->height});
+                                 (AVRational) { s->width, s->height });
                 } else {
                     s->avctx->sample_aspect_ratio =
                         av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
-                                 (AVRational) {s1->pan_scan.width, s1->pan_scan.height});
-//issue1613 4/3 16/9 -> 16/9
-//res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
-//widescreen-issue562.mpg 4/3 16/9 -> 16/9
+                                 (AVRational) { s1->pan_scan.width, s1->pan_scan.height });
+// issue1613 4/3 16/9 -> 16/9
+// res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
+// widescreen-issue562.mpg 4/3 16/9 -> 16/9
 //                    s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height});
-                    av_dlog(avctx, "A %d/%d\n",
-                            ff_mpeg2_aspect[s->aspect_ratio_info].num, ff_mpeg2_aspect[s->aspect_ratio_info].den);
-                    av_dlog(avctx, "B %d/%d\n", s->avctx->sample_aspect_ratio.num,
+                    ff_dlog(avctx, "A %d/%d\n",
+                            ff_mpeg2_aspect[s->aspect_ratio_info].num,
+                            ff_mpeg2_aspect[s->aspect_ratio_info].den);
+                    ff_dlog(avctx, "B %d/%d\n", s->avctx->sample_aspect_ratio.num,
                             s->avctx->sample_aspect_ratio.den);
                 }
             } else {
@@ -1228,12 +1310,13 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
             }
         } // MPEG-2
 
+        ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio);
+
         avctx->pix_fmt = mpeg_get_pixelformat(avctx);
-        avctx->hwaccel = ff_find_hwaccel(avctx);
         // until then pix_fmt may be changed right after codec init
 #if FF_API_XVMC
         if ((avctx->pix_fmt == AV_PIX_FMT_XVMC_MPEG2_IDCT ||
-            avctx->hwaccel) && avctx->idct_algo == FF_IDCT_AUTO)
+             avctx->hwaccel) && avctx->idct_algo == FF_IDCT_AUTO)
 #else
         if (avctx->hwaccel && avctx->idct_algo == FF_IDCT_AUTO)
 #endif /* FF_API_XVMC */
@@ -1241,41 +1324,43 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
 
         /* Quantization matrices may need reordering
          * if DCT permutation is changed. */
-        memcpy(old_permutation, s->dsp.idct_permutation, 64 * sizeof(uint8_t));
+        memcpy(old_permutation, s->idsp.idct_permutation, 64 * sizeof(uint8_t));
 
-        if (ff_MPV_common_init(s) < 0)
-            return -2;
+        ff_mpv_idct_init(s);
+        if ((ret = ff_mpv_common_init(s)) < 0)
+            return ret;
 
-        quant_matrix_rebuild(s->intra_matrix,        old_permutation, s->dsp.idct_permutation);
-        quant_matrix_rebuild(s->inter_matrix,        old_permutation, s->dsp.idct_permutation);
-        quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->dsp.idct_permutation);
-        quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->dsp.idct_permutation);
+        quant_matrix_rebuild(s->intra_matrix,        old_permutation, s->idsp.idct_permutation);
+        quant_matrix_rebuild(s->inter_matrix,        old_permutation, s->idsp.idct_permutation);
+        quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->idsp.idct_permutation);
+        quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->idsp.idct_permutation);
 
         s1->mpeg_enc_ctx_allocated = 1;
     }
     return 0;
 }
 
-static int mpeg1_decode_picture(AVCodecContext *avctx,
-                                const uint8_t *buf, int buf_size)
+static int mpeg1_decode_picture(AVCodecContext *avctx, const uint8_t *buf,
+                                int buf_size)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
     int ref, f_code, vbv_delay;
 
-    init_get_bits(&s->gb, buf, buf_size*8);
+    init_get_bits(&s->gb, buf, buf_size * 8);
 
     ref = get_bits(&s->gb, 10); /* temporal ref */
     s->pict_type = get_bits(&s->gb, 3);
     if (s->pict_type == 0 || s->pict_type > 3)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     vbv_delay = get_bits(&s->gb, 16);
-    if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
+    if (s->pict_type == AV_PICTURE_TYPE_P ||
+        s->pict_type == AV_PICTURE_TYPE_B) {
         s->full_pel[0] = get_bits1(&s->gb);
         f_code = get_bits(&s->gb, 3);
         if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
-            return -1;
+            return AVERROR_INVALIDDATA;
         s->mpeg_f_code[0][0] = f_code;
         s->mpeg_f_code[0][1] = f_code;
     }
@@ -1283,15 +1368,16 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
         s->full_pel[1] = get_bits1(&s->gb);
         f_code = get_bits(&s->gb, 3);
         if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
-            return -1;
+            return AVERROR_INVALIDDATA;
         s->mpeg_f_code[1][0] = f_code;
         s->mpeg_f_code[1][1] = f_code;
     }
-    s->current_picture.f.pict_type = s->pict_type;
-    s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
+    s->current_picture.f->pict_type = s->pict_type;
+    s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
     if (avctx->debug & FF_DEBUG_PICT_INFO)
-        av_log(avctx, AV_LOG_DEBUG, "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type);
+        av_log(avctx, AV_LOG_DEBUG,
+               "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type);
 
     s->y_dc_scale = 8;
     s->c_dc_scale = 8;
@@ -1300,14 +1386,14 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
 
 static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
 {
-    MpegEncContext *s= &s1->mpeg_enc_ctx;
+    MpegEncContext *s = &s1->mpeg_enc_ctx;
     int horiz_size_ext, vert_size_ext;
     int bit_rate_ext;
 
     skip_bits(&s->gb, 1); /* profile and level esc*/
     s->avctx->profile       = get_bits(&s->gb, 3);
     s->avctx->level         = get_bits(&s->gb, 4);
-    s->progressive_sequence = get_bits1(&s->gb); /* progressive_sequence */
+    s->progressive_sequence = get_bits1(&s->gb);   /* progressive_sequence */
     s->chroma_format        = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */
     horiz_size_ext          = get_bits(&s->gb, 2);
     vert_size_ext           = get_bits(&s->gb, 2);
@@ -1319,19 +1405,20 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
     s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
 
     s->low_delay = get_bits1(&s->gb);
-    if (s->flags & CODEC_FLAG_LOW_DELAY)
+    if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
         s->low_delay = 1;
 
     s1->frame_rate_ext.num = get_bits(&s->gb, 2) + 1;
     s1->frame_rate_ext.den = get_bits(&s->gb, 5) + 1;
 
-    av_dlog(s->avctx, "sequence extension\n");
-    s->codec_id      = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO;
+    ff_dlog(s->avctx, "sequence extension\n");
+    s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO;
 
     if (s->avctx->debug & FF_DEBUG_PICT_INFO)
-        av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
-               s->avctx->profile, s->avctx->level, s->avctx->rc_buffer_size, s->bit_rate);
-
+        av_log(s->avctx, AV_LOG_DEBUG,
+               "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
+               s->avctx->profile, s->avctx->level,
+               s->avctx->rc_buffer_size, s->bit_rate);
 }
 
 static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
@@ -1347,7 +1434,7 @@ static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
         s->avctx->colorspace      = get_bits(&s->gb, 8);
     }
     w = get_bits(&s->gb, 14);
-    skip_bits(&s->gb, 1); //marker
+    skip_bits(&s->gb, 1); // marker
     h = get_bits(&s->gb, 14);
     // remaining 3 bits are zero padding
 
@@ -1385,22 +1472,24 @@ static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
     }
 
     if (s->avctx->debug & FF_DEBUG_PICT_INFO)
-        av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\n",
+        av_log(s->avctx, AV_LOG_DEBUG,
+               "pde (%"PRId16",%"PRId16") (%"PRId16",%"PRId16") (%"PRId16",%"PRId16")\n",
                s1->pan_scan.position[0][0], s1->pan_scan.position[0][1],
                s1->pan_scan.position[1][0], s1->pan_scan.position[1][1],
                s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]);
 }
 
-static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra)
+static int load_matrix(MpegEncContext *s, uint16_t matrix0[64],
+                       uint16_t matrix1[64], int intra)
 {
     int i;
 
     for (i = 0; i < 64; i++) {
-        int j = s->dsp.idct_permutation[ff_zigzag_direct[i]];
+        int j = s->idsp.idct_permutation[ff_zigzag_direct[i]];
         int v = get_bits(&s->gb, 8);
         if (v == 0) {
             av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         if (intra && i == 0 && v != 8) {
             av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
@@ -1415,25 +1504,30 @@ static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1
 
 static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
 {
-    av_dlog(s->avctx, "matrix extension\n");
+    ff_dlog(s->avctx, "matrix extension\n");
 
-    if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
-    if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
-    if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, NULL           , 1);
-    if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, NULL           , 0);
+    if (get_bits1(&s->gb))
+        load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
+    if (get_bits1(&s->gb))
+        load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
+    if (get_bits1(&s->gb))
+        load_matrix(s, s->chroma_intra_matrix, NULL, 1);
+    if (get_bits1(&s->gb))
+        load_matrix(s, s->chroma_inter_matrix, NULL, 0);
 }
 
 static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
 {
     MpegEncContext *s = &s1->mpeg_enc_ctx;
 
-    s->full_pel[0] = s->full_pel[1] = 0;
+    s->full_pel[0]       = s->full_pel[1] = 0;
     s->mpeg_f_code[0][0] = get_bits(&s->gb, 4);
     s->mpeg_f_code[0][1] = get_bits(&s->gb, 4);
     s->mpeg_f_code[1][0] = get_bits(&s->gb, 4);
     s->mpeg_f_code[1][1] = get_bits(&s->gb, 4);
     if (!s->pict_type && s1->mpeg_enc_ctx_allocated) {
-        av_log(s->avctx, AV_LOG_ERROR, "Missing picture start code, guessing missing values\n");
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Missing picture start code, guessing missing values\n");
         if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) {
             if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15)
                 s->pict_type = AV_PICTURE_TYPE_I;
@@ -1441,8 +1535,8 @@ static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
                 s->pict_type = AV_PICTURE_TYPE_P;
         } else
             s->pict_type = AV_PICTURE_TYPE_B;
-        s->current_picture.f.pict_type = s->pict_type;
-        s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
+        s->current_picture.f->pict_type = s->pict_type;
+        s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
     }
     s->intra_dc_precision         = get_bits(&s->gb, 2);
     s->picture_structure          = get_bits(&s->gb, 2);
@@ -1458,17 +1552,20 @@ static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
 
     if (s->progressive_sequence && !s->progressive_frame) {
         s->progressive_frame = 1;
-        av_log(s->avctx, AV_LOG_ERROR, "interlaced frame in progressive sequence, ignoring\n");
+        av_log(s->avctx, AV_LOG_ERROR,
+               "interlaced frame in progressive sequence, ignoring\n");
     }
 
-    if (s->picture_structure == 0 || (s->progressive_frame && s->picture_structure != PICT_FRAME)) {
-        av_log(s->avctx, AV_LOG_ERROR, "picture_structure %d invalid, ignoring\n", s->picture_structure);
+    if (s->picture_structure == 0 ||
+        (s->progressive_frame && s->picture_structure != PICT_FRAME)) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "picture_structure %d invalid, ignoring\n",
+               s->picture_structure);
         s->picture_structure = PICT_FRAME;
     }
 
-    if (s->progressive_sequence && !s->frame_pred_frame_dct) {
+    if (s->progressive_sequence && !s->frame_pred_frame_dct)
         av_log(s->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n");
-    }
 
     if (s->picture_structure == PICT_FRAME) {
         s->first_field = 0;
@@ -1480,53 +1577,54 @@ static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
     }
 
     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->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
+        ff_init_scantable(s->idsp.idct_permutation, &s->intra_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->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
+        ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
     }
 
     /* composite display not parsed */
-    av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
-    av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure);
-    av_dlog(s->avctx, "top field first=%d\n", s->top_field_first);
-    av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
-    av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
-    av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
-    av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
-    av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
-    av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
+    ff_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
+    ff_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure);
+    ff_dlog(s->avctx, "top field first=%d\n", s->top_field_first);
+    ff_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
+    ff_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
+    ff_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
+    ff_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
+    ff_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
+    ff_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
 }
 
 static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
 {
     AVCodecContext *avctx = s->avctx;
-    Mpeg1Context *s1 = (Mpeg1Context*)s;
+    Mpeg1Context *s1      = (Mpeg1Context *) s;
+    int ret;
 
     /* start frame decoding */
     if (s->first_field || s->picture_structure == PICT_FRAME) {
         AVFrameSideData *pan_scan;
 
-        if (ff_MPV_frame_start(s, avctx) < 0)
-            return -1;
+        if ((ret = ff_mpv_frame_start(s, avctx)) < 0)
+            return ret;
 
         ff_mpeg_er_frame_start(s);
 
         /* first check if we must repeat the frame */
-        s->current_picture_ptr->f.repeat_pict = 0;
+        s->current_picture_ptr->f->repeat_pict = 0;
         if (s->repeat_first_field) {
             if (s->progressive_sequence) {
                 if (s->top_field_first)
-                    s->current_picture_ptr->f.repeat_pict = 4;
+                    s->current_picture_ptr->f->repeat_pict = 4;
                 else
-                    s->current_picture_ptr->f.repeat_pict = 2;
+                    s->current_picture_ptr->f->repeat_pict = 2;
             } else if (s->progressive_frame) {
-                s->current_picture_ptr->f.repeat_pict = 1;
+                s->current_picture_ptr->f->repeat_pict = 1;
             }
         }
 
-        pan_scan = av_frame_new_side_data(&s->current_picture_ptr->f,
+        pan_scan = av_frame_new_side_data(s->current_picture_ptr->f,
                                           AV_FRAME_DATA_PANSCAN,
                                           sizeof(s1->pan_scan));
         if (!pan_scan)
@@ -1535,12 +1633,33 @@ static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
 
         if (s1->a53_caption) {
             AVFrameSideData *sd = av_frame_new_side_data(
-                &s->current_picture_ptr->f, AV_FRAME_DATA_A53_CC,
+                s->current_picture_ptr->f, AV_FRAME_DATA_A53_CC,
                 s1->a53_caption_size);
             if (sd)
                 memcpy(sd->data, s1->a53_caption, s1->a53_caption_size);
             av_freep(&s1->a53_caption);
         }
+
+        if (s1->has_stereo3d) {
+            AVStereo3D *stereo = av_stereo3d_create_side_data(s->current_picture_ptr->f);
+            if (!stereo)
+                return AVERROR(ENOMEM);
+
+            *stereo = s1->stereo3d;
+            s1->has_stereo3d = 0;
+        }
+
+        if (s1->has_afd) {
+            AVFrameSideData *sd =
+                av_frame_new_side_data(s->current_picture_ptr->f,
+                                       AV_FRAME_DATA_AFD, 1);
+            if (!sd)
+                return AVERROR(ENOMEM);
+
+            *sd->data   = s1->afd;
+            s1->has_afd = 0;
+        }
+
         if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME))
             ff_thread_finish_setup(avctx);
     } else { // second field
@@ -1548,31 +1667,32 @@ static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
 
         if (!s->current_picture_ptr) {
             av_log(s->avctx, AV_LOG_ERROR, "first field missing\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
 
         if (s->avctx->hwaccel &&
             (s->avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) {
             if (s->avctx->hwaccel->end_frame(s->avctx) < 0)
-                av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode first field\n");
+                av_log(avctx, AV_LOG_ERROR,
+                       "hardware accelerator failed to decode first field\n");
         }
 
         for (i = 0; i < 4; i++) {
-            s->current_picture.f.data[i] = s->current_picture_ptr->f.data[i];
-            if (s->picture_structure == PICT_BOTTOM_FIELD) {
-                s->current_picture.f.data[i] += s->current_picture_ptr->f.linesize[i];
-            }
+            s->current_picture.f->data[i] = s->current_picture_ptr->f->data[i];
+            if (s->picture_structure == PICT_BOTTOM_FIELD)
+                s->current_picture.f->data[i] +=
+                    s->current_picture_ptr->f->linesize[i];
         }
     }
 
     if (avctx->hwaccel) {
-        if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
-            return -1;
+        if ((ret = avctx->hwaccel->start_frame(avctx, buf, buf_size)) < 0)
+            return ret;
     }
 
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
-// MPV_frame_start will call this function too,
+// ff_mpv_frame_start will call this function too,
 // but we need to call it on every field
     if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
         if (ff_xvmc_field_start(s, avctx) < 0)
@@ -1597,6 +1717,7 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
 {
     AVCodecContext *avctx = s->avctx;
     const int field_pic   = s->picture_structure != PICT_FRAME;
+    int ret;
 
     s->resync_mb_x =
     s->resync_mb_y = -1;
@@ -1612,13 +1733,12 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
 
     if (s->qscale == 0) {
         av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* extra slice info */
-    while (get_bits1(&s->gb) != 0) {
+    while (get_bits1(&s->gb) != 0)
         skip_bits(&s->gb, 8);
-    }
 
     s->mb_x = 0;
 
@@ -1630,12 +1750,11 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
                                 MBINCR_VLC_BITS, 2);
             if (code < 0) {
                 av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             if (code >= 33) {
-                if (code == 33) {
+                if (code == 33)
                     s->mb_x += 33;
-                }
                 /* otherwise, stuffing, nothing to do */
             } else {
                 s->mb_x += code;
@@ -1644,9 +1763,9 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
         }
     }
 
-    if (s->mb_x >= (unsigned)s->mb_width) {
+    if (s->mb_x >= (unsigned) s->mb_width) {
         av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     if (avctx->hwaccel) {
@@ -1669,12 +1788,22 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
 
     if (s->mb_y == 0 && s->mb_x == 0 && (s->first_field || s->picture_structure == PICT_FRAME)) {
         if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
-             av_log(s->avctx, AV_LOG_DEBUG, "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n",
-                    s->qscale, s->mpeg_f_code[0][0], s->mpeg_f_code[0][1], s->mpeg_f_code[1][0], s->mpeg_f_code[1][1],
-                    s->pict_type == AV_PICTURE_TYPE_I ? "I" : (s->pict_type == AV_PICTURE_TYPE_P ? "P" : (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")),
-                    s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"",
-                    s->intra_dc_precision, s->picture_structure, s->frame_pred_frame_dct, s->concealment_motion_vectors,
-                    s->q_scale_type, s->intra_vlc_format, s->repeat_first_field, s->chroma_420_type ? "420" :"");
+            av_log(s->avctx, AV_LOG_DEBUG,
+                   "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n",
+                   s->qscale,
+                   s->mpeg_f_code[0][0], s->mpeg_f_code[0][1],
+                   s->mpeg_f_code[1][0], s->mpeg_f_code[1][1],
+                   s->pict_type  == AV_PICTURE_TYPE_I ? "I" :
+                   (s->pict_type == AV_PICTURE_TYPE_P ? "P" :
+                   (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")),
+                   s->progressive_sequence ? "ps"  : "",
+                   s->progressive_frame    ? "pf"  : "",
+                   s->alternate_scan       ? "alt" : "",
+                   s->top_field_first      ? "top" : "",
+                   s->intra_dc_precision, s->picture_structure,
+                   s->frame_pred_frame_dct, s->concealment_motion_vectors,
+                   s->q_scale_type, s->intra_vlc_format,
+                   s->repeat_first_field, s->chroma_420_type ? "420" : "");
         }
     }
 
@@ -1687,10 +1816,11 @@ FF_DISABLE_DEPRECATION_WARNINGS
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
 
-        if (mpeg_decode_mb(s, s->block) < 0)
-            return -1;
+        if ((ret = mpeg_decode_mb(s, s->block)) < 0)
+            return ret;
 
-        if (s->current_picture.motion_val[0] && !s->encoding) { // note motion_val is normally NULL unless we want to extract the MVs
+        // Note motion_val is normally NULL unless we want to extract the MVs.
+        if (s->current_picture.motion_val[0] && !s->encoding) {
             const int wrap = s->b8_stride;
             int xy         = s->mb_x * 2 + s->mb_y * 2 * wrap;
             int b8_xy      = 4 * (s->mb_x + s->mb_y * s->mb_stride);
@@ -1698,26 +1828,29 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
             for (i = 0; i < 2; i++) {
                 for (dir = 0; dir < 2; dir++) {
-                    if (s->mb_intra || (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) {
+                    if (s->mb_intra ||
+                        (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) {
                         motion_x = motion_y = 0;
-                    } else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)) {
+                    } else if (s->mv_type == MV_TYPE_16X16 ||
+                               (s->mv_type == MV_TYPE_FIELD && field_pic)) {
                         motion_x = s->mv[dir][0][0];
                         motion_y = s->mv[dir][0][1];
-                    } else /*if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8))*/ {
+                    } else { /* if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8)) */
                         motion_x = s->mv[dir][i][0];
                         motion_y = s->mv[dir][i][1];
                     }
 
-                    s->current_picture.motion_val[dir][xy    ][0] = motion_x;
-                    s->current_picture.motion_val[dir][xy    ][1] = motion_y;
+                    s->current_picture.motion_val[dir][xy][0]     = motion_x;
+                    s->current_picture.motion_val[dir][xy][1]     = motion_y;
                     s->current_picture.motion_val[dir][xy + 1][0] = motion_x;
                     s->current_picture.motion_val[dir][xy + 1][1] = motion_y;
-                    s->current_picture.ref_index [dir][b8_xy    ] =
+                    s->current_picture.ref_index [dir][b8_xy]     =
                     s->current_picture.ref_index [dir][b8_xy + 1] = s->field_select[dir][i];
-                    assert(s->field_select[dir][i] == 0 || s->field_select[dir][i] == 1);
+                    assert(s->field_select[dir][i] == 0 ||
+                           s->field_select[dir][i] == 1);
                 }
-                xy += wrap;
-                b8_xy +=2;
+                xy    += wrap;
+                b8_xy += 2;
             }
         }
 
@@ -1725,27 +1858,33 @@ FF_ENABLE_DEPRECATION_WARNINGS
         s->dest[1] += 16 >> s->chroma_x_shift;
         s->dest[2] += 16 >> s->chroma_x_shift;
 
-        ff_MPV_decode_mb(s, s->block);
+        ff_mpv_decode_mb(s, s->block);
 
         if (++s->mb_x >= s->mb_width) {
             const int mb_size = 16;
 
-            ff_mpeg_draw_horiz_band(s, mb_size*(s->mb_y >> field_pic), mb_size);
-            ff_MPV_report_decode_progress(s);
+            ff_mpeg_draw_horiz_band(s, mb_size * (s->mb_y >> field_pic), mb_size);
+            ff_mpv_report_decode_progress(s);
 
-            s->mb_x = 0;
+            s->mb_x  = 0;
             s->mb_y += 1 << field_pic;
 
             if (s->mb_y >= s->mb_height) {
                 int left   = get_bits_left(&s->gb);
-                int is_d10 = s->chroma_format == 2 && s->pict_type == AV_PICTURE_TYPE_I && avctx->profile == 0 && avctx->level == 5
-                             && s->intra_dc_precision == 2 && s->q_scale_type == 1 && s->alternate_scan == 0
-                             && s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/;
-
-                if (left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
-                    || ((avctx->err_recognition & AV_EF_BUFFER) && left > 8)) {
-                    av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23)));
-                    return -1;
+                int is_d10 = s->chroma_format == 2 &&
+                             s->pict_type == AV_PICTURE_TYPE_I &&
+                             avctx->profile == 0 && avctx->level == 5 &&
+                             s->intra_dc_precision == 2 &&
+                             s->q_scale_type == 1 && s->alternate_scan == 0 &&
+                             s->progressive_frame == 0
+                             /* vbv_delay == 0xBBB || 0xE10 */;
+
+                if (left < 0 ||
+                    (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10) ||
+                    ((avctx->err_recognition & AV_EF_BUFFER) && left > 8)) {
+                    av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n",
+                           left, show_bits(&s->gb, FFMIN(left, 23)));
+                    return AVERROR_INVALIDDATA;
                 } else
                     goto eos;
             }
@@ -1762,7 +1901,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                                     MBINCR_VLC_BITS, 2);
                 if (code < 0) {
                     av_log(s->avctx, AV_LOG_ERROR, "mb incr damaged\n");
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
                 if (code >= 33) {
                     if (code == 33) {
@@ -1770,7 +1909,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
                     } else if (code == 35) {
                         if (s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) {
                             av_log(s->avctx, AV_LOG_ERROR, "slice mismatch\n");
-                            return -1;
+                            return AVERROR_INVALIDDATA;
                         }
                         goto eos; /* end of slice */
                     }
@@ -1783,8 +1922,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
             if (s->mb_skip_run) {
                 int i;
                 if (s->pict_type == AV_PICTURE_TYPE_I) {
-                    av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
-                    return -1;
+                    av_log(s->avctx, AV_LOG_ERROR,
+                           "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
+                    return AVERROR_INVALIDDATA;
                 }
 
                 /* skip mb */
@@ -1813,14 +1953,14 @@ FF_ENABLE_DEPRECATION_WARNINGS
         }
     }
 eos: // end of slice
-    *buf += (get_bits_count(&s->gb)-1)/8;
-    av_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
+    *buf += (get_bits_count(&s->gb) - 1) / 8;
+    ff_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
     return 0;
 }
 
 static int slice_decode_thread(AVCodecContext *c, void *arg)
 {
-    MpegEncContext *s   = *(void**)arg;
+    MpegEncContext *s   = *(void **) arg;
     const uint8_t *buf  = s->gb.buffer;
     int mb_y            = s->start_mb_y;
     const int field_pic = s->picture_structure != PICT_FRAME;
@@ -1833,28 +1973,32 @@ static int slice_decode_thread(AVCodecContext *c, void *arg)
 
         ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf);
         emms_c();
-        av_dlog(c, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
+        ff_dlog(c, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
                 ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y,
                 s->start_mb_y, s->end_mb_y, s->er.error_count);
         if (ret < 0) {
             if (c->err_recognition & AV_EF_EXPLODE)
                 return ret;
             if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0)
-                ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
+                ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
+                                s->mb_x, s->mb_y,
+                                ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
         } else {
-            ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_AC_END | ER_DC_END | ER_MV_END);
+            ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
+                            s->mb_x - 1, s->mb_y,
+                            ER_AC_END | ER_DC_END | ER_MV_END);
         }
 
         if (s->mb_y == s->end_mb_y)
             return 0;
 
         start_code = -1;
-        buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
-        mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
+        buf        = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
+        mb_y       = (start_code - SLICE_MIN_START_CODE) << field_pic;
         if (s->picture_structure == PICT_BOTTOM_FIELD)
             mb_y++;
         if (mb_y < 0 || mb_y >= s->end_mb_y)
-            return -1;
+            return AVERROR_INVALIDDATA;
     }
 }
 
@@ -1864,7 +2008,7 @@ static int slice_decode_thread(AVCodecContext *c, void *arg)
  */
 static int slice_end(AVCodecContext *avctx, AVFrame *pict)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
 
     if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
@@ -1872,7 +2016,8 @@ static int slice_end(AVCodecContext *avctx, AVFrame *pict)
 
     if (s->avctx->hwaccel) {
         if (s->avctx->hwaccel->end_frame(s->avctx) < 0)
-            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
+            av_log(avctx, AV_LOG_ERROR,
+                   "hardware accelerator failed to decode picture\n");
     }
 
 #if FF_API_XVMC
@@ -1883,15 +2028,15 @@ FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
 
     /* end of slice reached */
-    if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field) {
+    if (/* s->mb_y << field_pic == s->mb_height && */ !s->first_field) {
         /* end of image */
 
         ff_er_frame_end(&s->er);
 
-        ff_MPV_frame_end(s);
+        ff_mpv_frame_end(s);
 
         if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
-            int ret = av_frame_ref(pict, &s->current_picture_ptr->f);
+            int ret = av_frame_ref(pict, s->current_picture_ptr->f);
             if (ret < 0)
                 return ret;
             ff_print_debug_info(s, s->current_picture_ptr);
@@ -1900,8 +2045,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 s->picture_number++;
             /* latency of 1 frame for I- and P-frames */
             /* XXX: use another variable than picture_number */
-            if (s->last_picture_ptr != NULL) {
-                int ret = av_frame_ref(pict, &s->last_picture_ptr->f);
+            if (s->last_picture_ptr) {
+                int ret = av_frame_ref(pict, s->last_picture_ptr->f);
                 if (ret < 0)
                     return ret;
                 ff_print_debug_info(s, s->last_picture_ptr);
@@ -1917,18 +2062,18 @@ FF_ENABLE_DEPRECATION_WARNINGS
 static int mpeg1_decode_sequence(AVCodecContext *avctx,
                                  const uint8_t *buf, int buf_size)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
     int width, height;
     int i, v, j;
 
-    init_get_bits(&s->gb, buf, buf_size*8);
+    init_get_bits(&s->gb, buf, buf_size * 8);
 
     width  = get_bits(&s->gb, 12);
     height = get_bits(&s->gb, 12);
     if (width == 0 || height == 0) {
-        av_log(avctx, AV_LOG_WARNING, "Invalid horizontal or vertical size "
-               "value.\n");
+        av_log(avctx, AV_LOG_WARNING,
+               "Invalid horizontal or vertical size value.\n");
         if (avctx->err_recognition & AV_EF_BITSTREAM)
             return AVERROR_INVALIDDATA;
     }
@@ -1936,14 +2081,19 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
     if (s->aspect_ratio_info == 0) {
         av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
         if (avctx->err_recognition & AV_EF_BITSTREAM)
-            return -1;
+            return AVERROR_INVALIDDATA;
     }
     s->frame_rate_index = get_bits(&s->gb, 4);
-    if (s->frame_rate_index == 0 || s->frame_rate_index > 13)
-        return -1;
+    if (s->frame_rate_index == 0 || s->frame_rate_index > 13) {
+        av_log(avctx, AV_LOG_WARNING,
+               "frame_rate_index %d is invalid\n", s->frame_rate_index);
+        return AVERROR_INVALIDDATA;
+    }
     s->bit_rate = get_bits(&s->gb, 18) * 400;
-    if (get_bits1(&s->gb) == 0) /* marker */
-        return -1;
+    if (get_bits1(&s->gb) == 0) { /* marker */
+        av_log(avctx, AV_LOG_ERROR, "Marker in sequence header missing\n");
+        return AVERROR_INVALIDDATA;
+    }
     s->width  = width;
     s->height = height;
 
@@ -1955,7 +2105,7 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
         load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
     } else {
         for (i = 0; i < 64; i++) {
-            j = s->dsp.idct_permutation[i];
+            j = s->idsp.idct_permutation[i];
             v = ff_mpeg1_default_intra_matrix[i];
             s->intra_matrix[j]        = v;
             s->chroma_intra_matrix[j] = v;
@@ -1965,7 +2115,7 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
         load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
     } else {
         for (i = 0; i < 64; i++) {
-            int j = s->dsp.idct_permutation[i];
+            int j = s->idsp.idct_permutation[i];
             v = ff_mpeg1_default_non_intra_matrix[i];
             s->inter_matrix[j]        = v;
             s->chroma_inter_matrix[j] = v;
@@ -1974,18 +2124,19 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
 
     if (show_bits(&s->gb, 23) != 0) {
         av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
-    /* we set MPEG-2 parameters so that it emulates MPEG-1 */
+    /* We set MPEG-2 parameters so that it emulates MPEG-1. */
     s->progressive_sequence = 1;
     s->progressive_frame    = 1;
     s->picture_structure    = PICT_FRAME;
     s->frame_pred_frame_dct = 1;
     s->chroma_format        = 1;
-    s->codec_id             = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO;
+    s->codec_id             =
+    s->avctx->codec_id      = AV_CODEC_ID_MPEG1VIDEO;
     s->out_format           = FMT_MPEG1;
-    if (s->flags & CODEC_FLAG_LOW_DELAY)
+    if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
         s->low_delay = 1;
 
     if (s->avctx->debug & FF_DEBUG_PICT_INFO)
@@ -1997,22 +2148,21 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
 
 static int vcr2_init_sequence(AVCodecContext *avctx)
 {
-    Mpeg1Context *s1 = avctx->priv_data;
+    Mpeg1Context *s1  = avctx->priv_data;
     MpegEncContext *s = &s1->mpeg_enc_ctx;
-    int i, v;
+    int i, v, ret;
 
     /* start new MPEG-1 context decoding */
     s->out_format = FMT_MPEG1;
     if (s1->mpeg_enc_ctx_allocated) {
-        ff_MPV_common_end(s);
+        ff_mpv_common_end(s);
     }
-    s->width  = avctx->coded_width;
-    s->height = avctx->coded_height;
+    s->width            = avctx->coded_width;
+    s->height           = avctx->coded_height;
     avctx->has_b_frames = 0; // true?
-    s->low_delay = 1;
+    s->low_delay        = 1;
 
     avctx->pix_fmt = mpeg_get_pixelformat(avctx);
-    avctx->hwaccel = ff_find_hwaccel(avctx);
 
 #if FF_API_XVMC
     if ((avctx->pix_fmt == AV_PIX_FMT_XVMC_MPEG2_IDCT || avctx->hwaccel) &&
@@ -2022,12 +2172,13 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
 #endif /* FF_API_XVMC */
         avctx->idct_algo = FF_IDCT_SIMPLE;
 
-    if (ff_MPV_common_init(s) < 0)
-        return -1;
+    ff_mpv_idct_init(s);
+    if ((ret = ff_mpv_common_init(s)) < 0)
+        return ret;
     s1->mpeg_enc_ctx_allocated = 1;
 
     for (i = 0; i < 64; i++) {
-        int j = s->dsp.idct_permutation[i];
+        int j = s->idsp.idct_permutation[i];
         v = ff_mpeg1_default_intra_matrix[i];
         s->intra_matrix[j]        = v;
         s->chroma_intra_matrix[j] = v;
@@ -2049,7 +2200,6 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
     return 0;
 }
 
-
 static int mpeg_decode_a53_cc(AVCodecContext *avctx,
                               const uint8_t *p, int buf_size)
 {
@@ -2063,14 +2213,13 @@ static int mpeg_decode_a53_cc(AVCodecContext *avctx,
         if (cc_count > 0 && buf_size >= 7 + cc_count * 3) {
             av_freep(&s1->a53_caption);
             s1->a53_caption_size = cc_count * 3;
-            s1->a53_caption = av_malloc(s1->a53_caption_size);
-            if (s1->a53_caption) {
+            s1->a53_caption      = av_malloc(s1->a53_caption_size);
+            if (s1->a53_caption)
                 memcpy(s1->a53_caption, p + 7, s1->a53_caption_size);
-            }
         }
         return 1;
     } else if (buf_size >= 11 &&
-        p[0] == 'C' && p[1] == 'C' && p[2] == 0x01 && p[3] == 0xf8) {
+               p[0] == 'C' && p[1] == 'C' && p[2] == 0x01 && p[3] == 0xf8) {
         /* extract DVD CC data */
         int cc_count = 0;
         int i;
@@ -2082,7 +2231,7 @@ static int mpeg_decode_a53_cc(AVCodecContext *avctx,
         if (cc_count > 0) {
             av_freep(&s1->a53_caption);
             s1->a53_caption_size = cc_count * 6;
-            s1->a53_caption = av_malloc(s1->a53_caption_size);
+            s1->a53_caption      = av_malloc(s1->a53_caption_size);
             if (s1->a53_caption) {
                 uint8_t field1 = !!(p[4] & 0x80);
                 uint8_t *cap = s1->a53_caption;
@@ -2108,6 +2257,7 @@ static void mpeg_decode_user_data(AVCodecContext *avctx,
                                   const uint8_t *p, int buf_size)
 {
     const uint8_t *buf_end = p + buf_size;
+    Mpeg1Context *s1 = avctx->priv_data;
 
     /* we parse the DTG active format information */
     if (buf_end - p >= 5 &&
@@ -2121,7 +2271,13 @@ static void mpeg_decode_user_data(AVCodecContext *avctx,
         if (flags & 0x40) {
             if (buf_end - p < 1)
                 return;
+#if FF_API_AFD
+FF_DISABLE_DEPRECATION_WARNINGS
             avctx->dtg_active_format = p[0] & 0x0f;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif /* FF_API_AFD */
+            s1->has_afd = 1;
+            s1->afd     = p[0] & 0x0f;
         }
     } else if (buf_end - p >= 6 &&
                p[0] == 'J' && p[1] == 'P' && p[2] == '3' && p[3] == 'D' &&
@@ -2133,24 +2289,21 @@ static void mpeg_decode_user_data(AVCodecContext *avctx,
             S3D_video_format_type == 0x04 ||
             S3D_video_format_type == 0x08 ||
             S3D_video_format_type == 0x23) {
-            Mpeg1Context *s1   = avctx->priv_data;
-            MpegEncContext *s  = &s1->mpeg_enc_ctx;
-            AVStereo3D *stereo = av_stereo3d_create_side_data(&s->current_picture_ptr->f);
-            if (!stereo)
-                return;
+
+            s1->has_stereo3d = 1;
 
             switch (S3D_video_format_type) {
             case 0x03:
-                stereo->type = AV_STEREO3D_SIDEBYSIDE;
+                s1->stereo3d.type = AV_STEREO3D_SIDEBYSIDE;
                 break;
             case 0x04:
-                stereo->type = AV_STEREO3D_TOPBOTTOM;
+                s1->stereo3d.type = AV_STEREO3D_TOPBOTTOM;
                 break;
             case 0x08:
-                stereo->type = AV_STEREO3D_2D;
+                s1->stereo3d.type = AV_STEREO3D_2D;
                 break;
             case 0x23:
-                stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
+                s1->stereo3d.type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
                 break;
             }
         }
@@ -2169,7 +2322,7 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
     int time_code_seconds, time_code_pictures;
     int broken_link;
 
-    init_get_bits(&s->gb, buf, buf_size*8);
+    init_get_bits(&s->gb, buf, buf_size * 8);
 
     skip_bits1(&s->gb); /* drop_frame_flag */
 
@@ -2180,20 +2333,20 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
     time_code_pictures = get_bits(&s->gb, 6);
 
     s1->closed_gop = get_bits1(&s->gb);
-    /*broken_link indicate that after editing the
-      reference frames of the first B-Frames after GOP I-Frame
-      are missing (open gop)*/
+    /* broken_link indicate that after editing the
+     * reference frames of the first B-Frames after GOP I-Frame
+     * are missing (open gop) */
     broken_link = get_bits1(&s->gb);
 
     if (s->avctx->debug & FF_DEBUG_PICT_INFO)
-        av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
+        av_log(s->avctx, AV_LOG_DEBUG,
+               "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
                time_code_hours, time_code_minutes, time_code_seconds,
                time_code_pictures, s1->closed_gop, broken_link);
 }
 
-static int decode_chunks(AVCodecContext *avctx,
-                         AVFrame *picture, int *got_output,
-                         const uint8_t *buf, int buf_size)
+static int decode_chunks(AVCodecContext *avctx, AVFrame *picture,
+                         int *got_output, const uint8_t *buf, int buf_size)
 {
     Mpeg1Context *s = avctx->priv_data;
     MpegEncContext *s2 = &s->mpeg_enc_ctx;
@@ -2208,11 +2361,14 @@ static int decode_chunks(AVCodecContext *avctx,
         buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &start_code);
         if (start_code > 0x1ff) {
             if (!skip_frame) {
-                if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) &&
+                if (HAVE_THREADS &&
+                    (avctx->active_thread_type & FF_THREAD_SLICE) &&
                     !avctx->hwaccel) {
                     int i;
 
-                    avctx->execute(avctx, slice_decode_thread,  &s2->thread_context[0], NULL, s->slice_count, sizeof(void*));
+                    avctx->execute(avctx, slice_decode_thread,
+                                   &s2->thread_context[0], NULL,
+                                   s->slice_count, sizeof(void *));
                     for (i = 0; i < s->slice_count; i++)
                         s2->er.error_count += s2->thread_context[i]->er.error_count;
                 }
@@ -2221,7 +2377,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 if (ret < 0)
                     return ret;
                 else if (ret) {
-                    if (s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
+                    // FIXME: merge with the stuff in mpeg_decode_slice
+                    if (s2->last_picture_ptr || s2->low_delay)
                         *got_output = 1;
                 }
             }
@@ -2231,18 +2388,19 @@ static int decode_chunks(AVCodecContext *avctx,
 
         input_size = buf_end - buf_ptr;
 
-        if (avctx->debug & FF_DEBUG_STARTCODE) {
-            av_log(avctx, AV_LOG_DEBUG, "%3X at %td left %d\n", start_code, buf_ptr-buf, input_size);
-        }
+        if (avctx->debug & FF_DEBUG_STARTCODE)
+            av_log(avctx, AV_LOG_DEBUG, "%3"PRIX32" at %td left %d\n",
+                   start_code, buf_ptr - buf, input_size);
 
         /* prepare data for next start code */
         switch (start_code) {
         case SEQ_START_CODE:
             if (last_code == 0) {
                 mpeg1_decode_sequence(avctx, buf_ptr, input_size);
-                s->sync=1;
+                s->sync = 1;
             } else {
-                av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
+                av_log(avctx, AV_LOG_ERROR,
+                       "ignoring SEQ_START_CODE after %X\n", last_code);
                 if (avctx->err_recognition & AV_EF_EXPLODE)
                     return AVERROR_INVALIDDATA;
             }
@@ -2261,7 +2419,7 @@ static int decode_chunks(AVCodecContext *avctx,
 
                 avctx->execute(avctx, slice_decode_thread,
                                s2->thread_context, NULL,
-                               s->slice_count, sizeof(void*));
+                               s->slice_count, sizeof(void *));
                 for (i = 0; i < s->slice_count; i++)
                     s2->er.error_count += s2->thread_context[i]->er.error_count;
                 s->slice_count = 0;
@@ -2269,30 +2427,33 @@ static int decode_chunks(AVCodecContext *avctx,
             if (last_code == 0 || last_code == SLICE_MIN_START_CODE) {
                 ret = mpeg_decode_postinit(avctx);
                 if (ret < 0) {
-                    av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n");
+                    av_log(avctx, AV_LOG_ERROR,
+                           "mpeg_decode_postinit() failure\n");
                     return ret;
                 }
 
-                /* we have a complete image: we try to decompress it */
+                /* We have a complete image: we try to decompress it. */
                 if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0)
                     s2->pict_type = 0;
                 s->first_slice = 1;
-                last_code = PICTURE_START_CODE;
+                last_code      = PICTURE_START_CODE;
             } else {
-                av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
+                av_log(avctx, AV_LOG_ERROR,
+                       "ignoring pic after %X\n", last_code);
                 if (avctx->err_recognition & AV_EF_EXPLODE)
                     return AVERROR_INVALIDDATA;
             }
             break;
         case EXT_START_CODE:
-            init_get_bits(&s2->gb, buf_ptr, input_size*8);
+            init_get_bits(&s2->gb, buf_ptr, input_size * 8);
 
             switch (get_bits(&s2->gb, 4)) {
             case 0x1:
                 if (last_code == 0) {
-                mpeg_decode_sequence_extension(s);
+                    mpeg_decode_sequence_extension(s);
                 } else {
-                    av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
+                    av_log(avctx, AV_LOG_ERROR,
+                           "ignoring seq ext after %X\n", last_code);
                     if (avctx->err_recognition & AV_EF_EXPLODE)
                         return AVERROR_INVALIDDATA;
                 }
@@ -2310,7 +2471,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 if (last_code == PICTURE_START_CODE) {
                     mpeg_decode_picture_coding_extension(s);
                 } else {
-                    av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code);
+                    av_log(avctx, AV_LOG_ERROR,
+                           "ignoring pic cod ext after %X\n", last_code);
                     if (avctx->err_recognition & AV_EF_EXPLODE)
                         return AVERROR_INVALIDDATA;
                 }
@@ -2322,11 +2484,12 @@ static int decode_chunks(AVCodecContext *avctx,
             break;
         case GOP_START_CODE:
             if (last_code == 0) {
-                s2->first_field=0;
+                s2->first_field = 0;
                 mpeg_decode_gop(avctx, buf_ptr, input_size);
-                s->sync=1;
+                s->sync = 1;
             } else {
-                av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
+                av_log(avctx, AV_LOG_ERROR,
+                       "ignoring GOP_START_CODE after %X\n", last_code);
                 if (avctx->err_recognition & AV_EF_EXPLODE)
                     return AVERROR_INVALIDDATA;
             }
@@ -2342,12 +2505,14 @@ static int decode_chunks(AVCodecContext *avctx,
                     mb_y++;
 
                 if (mb_y >= s2->mb_height) {
-                    av_log(s2->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
-                    return -1;
+                    av_log(s2->avctx, AV_LOG_ERROR,
+                           "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
+                    return AVERROR_INVALIDDATA;
                 }
 
-                if (s2->last_picture_ptr == NULL) {
-                /* Skip B-frames if we do not have reference frames and gop is not closed */
+                if (!s2->last_picture_ptr) {
+                    /* Skip B-frames if we do not have reference frames and
+                     * GOP is not closed. */
                     if (s2->pict_type == AV_PICTURE_TYPE_B) {
                         if (!s->closed_gop) {
                             skip_frame = 1;
@@ -2356,17 +2521,20 @@ static int decode_chunks(AVCodecContext *avctx,
                     }
                 }
                 if (s2->pict_type == AV_PICTURE_TYPE_I)
-                    s->sync=1;
-                if (s2->next_picture_ptr == NULL) {
-                /* Skip P-frames if we do not have a reference frame or we have an invalid header. */
+                    s->sync = 1;
+                if (!s2->next_picture_ptr) {
+                    /* Skip P-frames if we do not have a reference frame or
+                     * we have an invalid header. */
                     if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) {
                         skip_frame = 1;
                         break;
                     }
                 }
-                if ((avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type == AV_PICTURE_TYPE_B) ||
-                    (avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type != AV_PICTURE_TYPE_I) ||
-                     avctx->skip_frame >= AVDISCARD_ALL) {
+                if ((avctx->skip_frame >= AVDISCARD_NONREF &&
+                     s2->pict_type == AV_PICTURE_TYPE_B) ||
+                    (avctx->skip_frame >= AVDISCARD_NONKEY &&
+                     s2->pict_type != AV_PICTURE_TYPE_I) ||
+                    avctx->skip_frame >= AVDISCARD_ALL) {
                     skip_frame = 1;
                     break;
                 }
@@ -2375,7 +2543,8 @@ static int decode_chunks(AVCodecContext *avctx,
                     break;
 
                 if (s2->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
-                    if (mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
+                    if (mb_y < avctx->skip_top ||
+                        mb_y >= s2->mb_height - avctx->skip_bottom)
                         break;
                 }
 
@@ -2387,17 +2556,19 @@ static int decode_chunks(AVCodecContext *avctx,
                 }
 
                 if (s->first_slice) {
-                    skip_frame = 0;
+                    skip_frame     = 0;
                     s->first_slice = 0;
-                    if (mpeg_field_start(s2, buf, buf_size) < 0)
-                        return -1;
+                    if ((ret = mpeg_field_start(s2, buf, buf_size)) < 0)
+                        return ret;
                 }
                 if (!s2->current_picture_ptr) {
-                    av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n");
+                    av_log(avctx, AV_LOG_ERROR,
+                           "current_picture not initialized\n");
                     return AVERROR_INVALIDDATA;
                 }
 
-                if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) &&
+                if (HAVE_THREADS &&
+                    (avctx->active_thread_type & FF_THREAD_SLICE) &&
                     !avctx->hwaccel) {
                     int threshold = (s2->mb_height * s->slice_count +
                                      s2->slice_context_count / 2) /
@@ -2408,13 +2579,12 @@ static int decode_chunks(AVCodecContext *avctx,
                         thread_context->start_mb_y = mb_y;
                         thread_context->end_mb_y   = s2->mb_height;
                         if (s->slice_count) {
-                            s2->thread_context[s->slice_count-1]->end_mb_y = mb_y;
-                            ret = ff_update_duplicate_context(thread_context,
-                                                              s2);
+                            s2->thread_context[s->slice_count - 1]->end_mb_y = mb_y;
+                            ret = ff_update_duplicate_context(thread_context, s2);
                             if (ret < 0)
                                 return ret;
                         }
-                        init_get_bits(&thread_context->gb, buf_ptr, input_size*8);
+                        init_get_bits(&thread_context->gb, buf_ptr, input_size * 8);
                         s->slice_count++;
                     }
                     buf_ptr += 2; // FIXME add minimum number of bytes per slice
@@ -2426,9 +2596,13 @@ static int decode_chunks(AVCodecContext *avctx,
                         if (avctx->err_recognition & AV_EF_EXPLODE)
                             return ret;
                         if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0)
-                            ff_er_add_slice(&s2->er, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
+                            ff_er_add_slice(&s2->er, s2->resync_mb_x,
+                                            s2->resync_mb_y, s2->mb_x, s2->mb_y,
+                                            ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR);
                     } else {
-                        ff_er_add_slice(&s2->er, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x-1, s2->mb_y, ER_AC_END | ER_DC_END | ER_MV_END);
+                        ff_er_add_slice(&s2->er, s2->resync_mb_x,
+                                        s2->resync_mb_y, s2->mb_x - 1, s2->mb_y,
+                                        ER_AC_END | ER_DC_END | ER_MV_END);
                     }
                 }
             }
@@ -2437,21 +2611,20 @@ static int decode_chunks(AVCodecContext *avctx,
     }
 }
 
-static int mpeg_decode_frame(AVCodecContext *avctx,
-                             void *data, int *got_output,
-                             AVPacket *avpkt)
+static int mpeg_decode_frame(AVCodecContext *avctx, void *data,
+                             int *got_output, AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     Mpeg1Context *s = avctx->priv_data;
     AVFrame *picture = data;
     MpegEncContext *s2 = &s->mpeg_enc_ctx;
-    av_dlog(avctx, "fill_buffer\n");
+    ff_dlog(avctx, "fill_buffer\n");
 
     if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) {
         /* special case for last picture */
         if (s2->low_delay == 0 && s2->next_picture_ptr) {
-            int ret = av_frame_ref(picture, &s2->next_picture_ptr->f);
+            int ret = av_frame_ref(picture, s2->next_picture_ptr->f);
             if (ret < 0)
                 return ret;
 
@@ -2462,10 +2635,12 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
         return buf_size;
     }
 
-    if (s2->flags & CODEC_FLAG_TRUNCATED) {
-        int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size, NULL);
+    if (s2->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
+        int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf,
+                                           buf_size, NULL);
 
-        if (ff_combine_frame(&s2->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0)
+        if (ff_combine_frame(&s2->parse_context, next,
+                             (const uint8_t **) &buf, &buf_size) < 0)
             return buf_size;
     }
 
@@ -2475,7 +2650,8 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
     s->slice_count = 0;
 
     if (avctx->extradata && !s->extradata_decoded) {
-        int ret = decode_chunks(avctx, picture, got_output, avctx->extradata, avctx->extradata_size);
+        int ret = decode_chunks(avctx, picture, got_output,
+                                avctx->extradata, avctx->extradata_size);
         s->extradata_decoded = 1;
         if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
             return ret;
@@ -2484,12 +2660,11 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
     return decode_chunks(avctx, picture, got_output, buf, buf_size);
 }
 
-
 static void flush(AVCodecContext *avctx)
 {
     Mpeg1Context *s = avctx->priv_data;
 
-    s->sync=0;
+    s->sync       = 0;
     s->closed_gop = 0;
 
     ff_mpeg_flush(avctx);
@@ -2500,7 +2675,7 @@ static av_cold int mpeg_decode_end(AVCodecContext *avctx)
     Mpeg1Context *s = avctx->priv_data;
 
     if (s->mpeg_enc_ctx_allocated)
-        ff_MPV_common_end(&s->mpeg_enc_ctx);
+        ff_mpv_common_end(&s->mpeg_enc_ctx);
     av_freep(&s->a53_caption);
     return 0;
 }
@@ -2514,10 +2689,9 @@ static const AVProfile mpeg2_video_profiles[] = {
     { FF_PROFILE_MPEG2_SIMPLE,       "Simple"             },
     { FF_PROFILE_RESERVED,           "Reserved"           },
     { FF_PROFILE_RESERVED,           "Reserved"           },
-    { FF_PROFILE_UNKNOWN },
+    { FF_PROFILE_UNKNOWN                                  },
 };
 
-
 AVCodec ff_mpeg1video_decoder = {
     .name                  = "mpeg1video",
     .long_name             = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
@@ -2527,9 +2701,9 @@ AVCodec ff_mpeg1video_decoder = {
     .init                  = mpeg_decode_init,
     .close                 = mpeg_decode_end,
     .decode                = mpeg_decode_frame,
-    .capabilities          = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
-                             CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
-                             CODEC_CAP_SLICE_THREADS,
+    .capabilities          = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
+                             AV_CODEC_CAP_TRUNCATED | AV_CODEC_CAP_DELAY |
+                             AV_CODEC_CAP_SLICE_THREADS,
     .flush                 = flush,
     .update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context)
 };
@@ -2543,9 +2717,9 @@ AVCodec ff_mpeg2video_decoder = {
     .init           = mpeg_decode_init,
     .close          = mpeg_decode_end,
     .decode         = mpeg_decode_frame,
-    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
-                      CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
-                      CODEC_CAP_SLICE_THREADS,
+    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
+                      AV_CODEC_CAP_TRUNCATED | AV_CODEC_CAP_DELAY |
+                      AV_CODEC_CAP_SLICE_THREADS,
     .flush          = flush,
     .profiles       = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles),
 };
@@ -2559,7 +2733,7 @@ static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx)
     if (!(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
         return -1;
     if (!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) {
-        av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
+        ff_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
     }
     mpeg_decode_init(avctx);
 
@@ -2578,8 +2752,9 @@ AVCodec ff_mpeg_xvmc_decoder = {
     .init           = mpeg_mc_decode_init,
     .close          = mpeg_decode_end,
     .decode         = mpeg_decode_frame,
-    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
-                      CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
+    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
+                      AV_CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL |
+                      AV_CODEC_CAP_DELAY,
     .flush          = flush,
 };