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authorVittorio Giovara <vittorio.giovara@gmail.com>2014-02-04 13:57:54 +0000
committerVittorio Giovara <vittorio.giovara@gmail.com>2014-02-04 22:29:53 +0100
commita91d3658d9a73db120e49219c9c2b6a9470b1c9f (patch)
treed7b8273dbb94183e7c579af4b49fa1018170d74b /libavcodec/mpeg12dec.c
parent9ecb858775483a76c137e8e1ad45a95e318bca61 (diff)
downloadffmpeg-a91d3658d9a73db120e49219c9c2b6a9470b1c9f.tar.gz
mpeg: K&R formatting cosmetics
Also adjust header #include order and some comments. Signed-off-by: Diego Biurrun <diego@biurrun.de> Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Diffstat (limited to 'libavcodec/mpeg12dec.c')
-rw-r--r--libavcodec/mpeg12dec.c801
1 files changed, 456 insertions, 345 deletions
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index f0e390d790..149d5f49ef 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -28,31 +28,32 @@
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "libavutil/stereo3d.h"
-#include "internal.h"
+
#include "avcodec.h"
+#include "bytestream.h"
#include "dsputil.h"
-#include "mpegvideo.h"
#include "error_resilience.h"
+#include "internal.h"
#include "mpeg12.h"
#include "mpeg12data.h"
-#include "bytestream.h"
-#include "xvmc_internal.h"
+#include "mpegvideo.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 */
uint8_t *a53_caption;
int a53_caption_size;
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 +85,10 @@ 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 +97,10 @@ 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;
@@ -119,21 +118,22 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
return sign_extend(val, 5 + shift);
}
-#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)
+#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;
@@ -153,7 +153,8 @@ static inline int mpeg1_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;
@@ -163,17 +164,22 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, in
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);
@@ -194,7 +200,7 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, in
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)
@@ -202,11 +208,12 @@ 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;
@@ -215,7 +222,7 @@ 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)
@@ -223,12 +230,13 @@ 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;
@@ -236,17 +244,22 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, in
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);
@@ -263,7 +276,7 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s, int16_t *block, in
}
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);
}
@@ -275,19 +288,20 @@ 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)
@@ -295,13 +309,14 @@ 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;
@@ -309,17 +324,22 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, int16_t *bloc
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);
@@ -336,7 +356,7 @@ 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);
}
@@ -348,12 +368,12 @@ 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;
@@ -368,36 +388,40 @@ 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);
@@ -412,7 +436,7 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, int16_t *block
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);
}
@@ -430,22 +454,22 @@ 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;
}
@@ -456,19 +480,22 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
if (level != 0) {
i += run;
check_scantable_index(s, i);
- j = scantable[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;
check_scantable_index(s, i);
- j = scantable[i];
+ j = scantable[i];
if (level < 0) {
level = ((-level * 2 + 1) * qscale) >> 1;
level = -level;
@@ -478,7 +505,7 @@ 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);
}
@@ -489,13 +516,13 @@ 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;
@@ -503,10 +530,10 @@ 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)
@@ -528,25 +555,29 @@ 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;
check_scantable_index(s, i);
- j = scantable[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;
check_scantable_index(s, i);
- j = scantable[i];
+ j = scantable[i];
if (level < 0) {
level = (-level * qscale * quant_matrix[j]) >> 4;
level = -level;
@@ -566,22 +597,23 @@ 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, 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;
/* 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)
@@ -601,25 +633,29 @@ 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) {
i += run;
check_scantable_index(s, i);
- j = scantable[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;
check_scantable_index(s, i);
- j = scantable[i];
+ j = scantable[i];
if (level < 0) {
level = (-level * qscale * quant_matrix[j]) >> 4;
level = -level;
@@ -651,11 +687,10 @@ 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) */
@@ -676,17 +711,19 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
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] =
+ 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));
@@ -702,7 +739,9 @@ 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);
+ 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;
}
mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA;
@@ -713,7 +752,8 @@ 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);
+ 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;
}
mb_type = ptype2mb_type[mb_type];
@@ -721,7 +761,8 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
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);
+ 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;
}
mb_type = btype2mb_type[mb_type];
@@ -732,15 +773,14 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64])
if (IS_INTRA(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
- if (!s->chroma_y_shift) {
+ if (!s->chroma_y_shift)
s->dsp.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);
@@ -748,42 +788,44 @@ 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++) {
+ 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++) {
+ for (i = 0; i < mb_block_count; i++)
if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
- }
}
} else {
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < 6; i++)
if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
- }
}
} else {
if (mb_type & MB_TYPE_ZERO_MV) {
@@ -795,8 +837,8 @@ 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;
}
@@ -807,15 +849,15 @@ 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);
@@ -830,15 +872,21 @@ FF_ENABLE_DEPRECATION_WARNINGS
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;
@@ -847,7 +895,7 @@ 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)) {
@@ -953,7 +1001,8 @@ 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);
+ av_log(s->avctx, AV_LOG_ERROR,
+ "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}
@@ -964,36 +1013,35 @@ FF_ENABLE_DEPRECATION_WARNINGS
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->dsp.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);
+ av_log(s->avctx, AV_LOG_ERROR,
+ "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
return -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 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) {
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)) {
@@ -1008,11 +1056,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
} else {
if (s->flags2 & 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 {
@@ -1040,14 +1087,14 @@ 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;
+ s2->dsp.idct_permutation[i] = i;
ff_MPV_decode_defaults(s2);
@@ -1061,7 +1108,7 @@ 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
@@ -1069,17 +1116,21 @@ 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));
@@ -1098,16 +1149,16 @@ 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[] = {
@@ -1126,7 +1177,7 @@ static const enum AVPixelFormat mpeg12_hwaccel_pixfmt_list_420[] = {
static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx)
{
- Mpeg1Context *s1 = avctx->priv_data;
+ Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
#if FF_API_XVMC
@@ -1136,7 +1187,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_XVMC */
- if (s->chroma_format < 2)
+ if (s->chroma_format < 2)
return avctx->get_format(avctx, mpeg12_hwaccel_pixfmt_list_420);
else if (s->chroma_format == 2)
return AV_PIX_FMT_YUV422P;
@@ -1148,21 +1199,19 @@ FF_ENABLE_DEPRECATION_WARNINGS
* 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;
@@ -1188,45 +1237,49 @@ 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
+ // 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
+ // 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,
+ 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);
+ 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,
s->avctx->sample_aspect_ratio.den);
}
@@ -1241,7 +1294,7 @@ static int mpeg_decode_postinit(AVCodecContext *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 */
@@ -1264,14 +1317,14 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
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);
@@ -1279,7 +1332,8 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
return -1;
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))
@@ -1299,7 +1353,8 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
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;
@@ -1308,14 +1363,14 @@ 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);
@@ -1334,12 +1389,13 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
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;
+ 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)
@@ -1355,7 +1411,7 @@ 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
@@ -1399,7 +1455,8 @@ static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
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;
@@ -1425,23 +1482,28 @@ static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
{
av_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;
@@ -1466,17 +1528,20 @@ 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;
@@ -1510,7 +1575,7 @@ static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
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;
/* start frame decoding */
if (s->first_field || s->picture_structure == PICT_FRAME) {
@@ -1562,14 +1627,15 @@ static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
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];
- }
+ if (s->picture_structure == PICT_BOTTOM_FIELD)
+ s->current_picture.f.data[i] +=
+ s->current_picture_ptr->f.linesize[i];
}
}
@@ -1624,9 +1690,8 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
}
/* extra slice info */
- while (get_bits1(&s->gb) != 0) {
+ while (get_bits1(&s->gb) != 0)
skip_bits(&s->gb, 8);
- }
s->mb_x = 0;
@@ -1641,9 +1706,8 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
return -1;
}
if (code >= 33) {
- if (code == 33) {
+ if (code == 33)
s->mb_x += 33;
- }
/* otherwise, stuffing, nothing to do */
} else {
s->mb_x += code;
@@ -1652,7 +1716,7 @@ 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;
}
@@ -1677,12 +1741,22 @@ 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" : "");
}
}
@@ -1698,7 +1772,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (mpeg_decode_mb(s, s->block) < 0)
return -1;
- 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);
@@ -1706,26 +1781,29 @@ 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;
}
}
@@ -1738,21 +1816,27 @@ FF_ENABLE_DEPRECATION_WARNINGS
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_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)));
+ 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;
} else
goto eos;
@@ -1791,7 +1875,8 @@ 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);
+ av_log(s->avctx, AV_LOG_ERROR,
+ "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
@@ -1821,14 +1906,14 @@ FF_ENABLE_DEPRECATION_WARNINGS
}
}
eos: // end of slice
- *buf += (get_bits_count(&s->gb)-1)/8;
+ *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);
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;
@@ -1848,17 +1933,21 @@ static int slice_decode_thread(AVCodecContext *c, void *arg)
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)
@@ -1872,7 +1961,7 @@ 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)
@@ -1880,7 +1969,8 @@ 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
@@ -1891,7 +1981,7 @@ 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);
@@ -1925,18 +2015,18 @@ 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;
}
@@ -1985,13 +2075,14 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
return -1;
}
- /* 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)
s->low_delay = 1;
@@ -2005,7 +2096,7 @@ 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;
@@ -2014,10 +2105,10 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
if (s1->mpeg_enc_ctx_allocated) {
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);
@@ -2057,7 +2148,6 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
return 0;
}
-
static int mpeg_decode_a53_cc(AVCodecContext *avctx,
const uint8_t *p, int buf_size)
{
@@ -2071,14 +2161,13 @@ 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;
@@ -2090,7 +2179,7 @@ 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;
@@ -2143,7 +2232,8 @@ static void mpeg_decode_user_data(AVCodecContext *avctx,
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);
+ AVStereo3D *stereo =
+ av_stereo3d_create_side_data(&s->current_picture_ptr->f);
if (!stereo)
return;
@@ -2177,7 +2267,7 @@ 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 */
@@ -2188,20 +2278,20 @@ 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;
@@ -2216,11 +2306,14 @@ 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;
}
@@ -2229,7 +2322,8 @@ 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;
}
}
@@ -2239,18 +2333,19 @@ 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, "%3X 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;
}
@@ -2269,7 +2364,7 @@ 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;
@@ -2277,30 +2372,33 @@ 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;
}
@@ -2318,7 +2416,8 @@ 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;
}
@@ -2330,11 +2429,12 @@ 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;
}
@@ -2350,12 +2450,14 @@ 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);
+ av_log(s2->avctx, AV_LOG_ERROR,
+ "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
return -1;
}
if (s2->last_picture_ptr == NULL) {
- /* Skip B-frames if we do not have reference frames and gop is not closed */
+ /* 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;
@@ -2364,17 +2466,20 @@ static int decode_chunks(AVCodecContext *avctx,
}
}
if (s2->pict_type == AV_PICTURE_TYPE_I)
- s->sync=1;
+ 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. */
+ /* 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;
}
@@ -2383,7 +2488,8 @@ 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;
}
@@ -2395,17 +2501,19 @@ 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 (!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) /
@@ -2416,13 +2524,12 @@ 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
@@ -2434,9 +2541,13 @@ 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);
}
}
}
@@ -2445,9 +2556,8 @@ 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;
@@ -2471,9 +2581,11 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
}
if (s2->flags & CODEC_FLAG_TRUNCATED) {
- int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size, NULL);
+ 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;
}
@@ -2483,7 +2595,8 @@ 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;
@@ -2492,12 +2605,11 @@ 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);
@@ -2522,10 +2634,9 @@ 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"),
@@ -2587,7 +2698,7 @@ AVCodec ff_mpeg_xvmc_decoder = {
.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,
+ CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
.flush = flush,
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 20:22:25 +0000