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Diffstat (limited to 'src/libffmpeg/libavcodec/mpeg12.c')
-rw-r--r--src/libffmpeg/libavcodec/mpeg12.c619
1 files changed, 296 insertions, 323 deletions
diff --git a/src/libffmpeg/libavcodec/mpeg12.c b/src/libffmpeg/libavcodec/mpeg12.c
index 8b2b75d4e..ddecae85d 100644
--- a/src/libffmpeg/libavcodec/mpeg12.c
+++ b/src/libffmpeg/libavcodec/mpeg12.c
@@ -1,7 +1,7 @@
/*
* MPEG1 codec / MPEG2 decoder
* Copyright (c) 2000,2001 Fabrice Bellard.
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -15,14 +15,14 @@
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+
/**
* @file mpeg12.c
* MPEG1/2 codec
*/
-
+
//#define DEBUG
#include "avcodec.h"
#include "dsputil.h"
@@ -42,14 +42,14 @@
/* Start codes. */
-#define SEQ_END_CODE 0x000001b7
-#define SEQ_START_CODE 0x000001b3
-#define GOP_START_CODE 0x000001b8
-#define PICTURE_START_CODE 0x00000100
-#define SLICE_MIN_START_CODE 0x00000101
-#define SLICE_MAX_START_CODE 0x000001af
-#define EXT_START_CODE 0x000001b5
-#define USER_START_CODE 0x000001b2
+#define SEQ_END_CODE 0x000001b7
+#define SEQ_START_CODE 0x000001b3
+#define GOP_START_CODE 0x000001b8
+#define PICTURE_START_CODE 0x00000100
+#define SLICE_MIN_START_CODE 0x00000101
+#define SLICE_MAX_START_CODE 0x000001af
+#define EXT_START_CODE 0x000001b5
+#define USER_START_CODE 0x000001b2
#define DC_VLC_BITS 9
#define MV_VLC_BITS 9
@@ -60,23 +60,23 @@
#define TEX_VLC_BITS 9
#ifdef CONFIG_ENCODERS
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
+static void mpeg1_encode_block(MpegEncContext *s,
+ DCTELEM *block,
int component);
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added
#endif //CONFIG_ENCODERS
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+ DCTELEM *block,
int n);
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n);
static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n);
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block,
int n);
-static inline int mpeg2_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n);
static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n);
static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n);
@@ -96,7 +96,7 @@ const enum PixelFormat pixfmt_yuv_444[]= {PIX_FMT_YUV444P,-1};
const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_XVMC_MPEG2_MC,
- -1};
+ -1};
#ifdef CONFIG_ENCODERS
static uint8_t (*mv_penalty)[MAX_MV*2+1]= NULL;
static uint8_t fcode_tab[MAX_MV*2+1];
@@ -115,12 +115,12 @@ static int8_t mpeg1_max_level[2][64];
static void init_2d_vlc_rl(RLTable *rl, int use_static)
{
int i;
-
- init_vlc(&rl->vlc, TEX_VLC_BITS, rl->n + 2,
+
+ init_vlc(&rl->vlc, TEX_VLC_BITS, rl->n + 2,
&rl->table_vlc[0][1], 4, 2,
&rl->table_vlc[0][0], 4, 2, use_static);
- if(use_static)
+ if(use_static)
rl->rl_vlc[0]= av_mallocz_static(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
else
rl->rl_vlc[0]= av_malloc(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
@@ -129,7 +129,7 @@ static void init_2d_vlc_rl(RLTable *rl, int use_static)
int code= rl->vlc.table[i][0];
int len = rl->vlc.table[i][1];
int level, run;
-
+
if(len==0){ // illegal code
run= 65;
level= MAX_LEVEL;
@@ -163,7 +163,7 @@ static void init_uni_ac_vlc(RLTable *rl, uint32_t *uni_ac_vlc_bits, uint8_t *uni
int run;
for(run=0; run<64; run++){
int len, bits, code;
-
+
int alevel= ABS(level);
int sign= (level>>31)&1;
@@ -173,7 +173,7 @@ static void init_uni_ac_vlc(RLTable *rl, uint32_t *uni_ac_vlc_bits, uint8_t *uni
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
- /* store the vlc & sign at once */
+ /* store the vlc & sign at once */
len= mpeg1_vlc[code][1]+1;
bits= (mpeg1_vlc[code][0]<<1) + sign;
} else {
@@ -239,7 +239,7 @@ static int encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
}
}
-
+
return 0;
}
@@ -260,36 +260,36 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
float best_aspect_error= 1E10;
float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
int constraint_parameter_flag;
-
+
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
-
+
if (s->current_picture.key_frame) {
AVRational framerate= frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
-
+
put_bits(&s->pb, 12, s->width);
put_bits(&s->pb, 12, s->height);
-
+
for(i=1; i<15; i++){
float error= aspect_ratio;
if(s->codec_id == CODEC_ID_MPEG1VIDEO || i <=1)
error-= 1.0/mpeg1_aspect[i];
else
error-= av_q2d(mpeg2_aspect[i])*s->height/s->width;
-
+
error= ABS(error);
-
+
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
}
-
+
put_bits(&s->pb, 4, s->aspect_ratio_info);
put_bits(&s->pb, 4, s->frame_rate_index);
-
+
if(s->avctx->rc_max_rate){
v = (s->avctx->rc_max_rate + 399) / 400;
if (v > 0x3ffff && s->codec_id == CODEC_ID_MPEG1VIDEO)
@@ -309,8 +309,8 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 10, vbv_buffer_size & 0x3FF);
- constraint_parameter_flag=
- s->width <= 768 && s->height <= 576 &&
+ constraint_parameter_flag=
+ s->width <= 768 && s->height <= 576 &&
s->mb_width * s->mb_height <= 396 &&
s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
framerate.num <= framerate.den*30 &&
@@ -318,9 +318,9 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
vbv_buffer_size <= 20 &&
v <= 1856000/400 &&
s->codec_id == CODEC_ID_MPEG1VIDEO;
-
+
put_bits(&s->pb, 1, constraint_parameter_flag);
-
+
ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
@@ -328,7 +328,7 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 1); //seq ext
put_bits(&s->pb, 1, 0); //esc
-
+
if(s->avctx->profile == FF_PROFILE_UNKNOWN){
put_bits(&s->pb, 3, 4); //profile
}else{
@@ -352,7 +352,7 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
put_bits(&s->pb, 2, 0); // frame_rate_ext_n
put_bits(&s->pb, 5, 0); // frame_rate_ext_d
}
-
+
put_header(s, GOP_START_CODE);
put_bits(&s->pb, 1, 0); /* do drop frame */
/* time code : we must convert from the real frame rate to a
@@ -376,7 +376,7 @@ static inline void encode_mb_skip_run(MpegEncContext *s, int run){
put_bits(&s->pb, 11, 0x008);
run -= 33;
}
- put_bits(&s->pb, mbAddrIncrTable[run][1],
+ put_bits(&s->pb, mbAddrIncrTable[run][1],
mbAddrIncrTable[run][0]);
}
#endif //CONFIG_ENCODERS
@@ -413,13 +413,13 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
/* temporal reference */
// RAL: s->picture_number instead of s->fake_picture_number
- put_bits(&s->pb, 10, (s->picture_number -
- s->gop_picture_number) & 0x3ff);
+ put_bits(&s->pb, 10, (s->picture_number -
+ s->gop_picture_number) & 0x3ff);
put_bits(&s->pb, 3, s->pict_type);
s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
-
+
// RAL: Forward f_code also needed for B frames
if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
@@ -428,7 +428,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
-
+
// RAL: Backward f_code necessary for B frames
if (s->pict_type == B_TYPE) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
@@ -457,7 +457,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
-
+
assert(s->picture_structure == PICT_FRAME);
put_bits(&s->pb, 2, s->picture_structure);
if (s->progressive_sequence) {
@@ -468,7 +468,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
/* XXX: optimize the generation of this flag with entropy
measures */
s->frame_pred_frame_dct = s->progressive_sequence;
-
+
put_bits(&s->pb, 1, s->frame_pred_frame_dct);
put_bits(&s->pb, 1, s->concealment_motion_vectors);
put_bits(&s->pb, 1, s->q_scale_type);
@@ -488,17 +488,17 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
-
+
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
-static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
+static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
int has_mv, int field_motion)
{
put_bits(&s->pb, n, bits);
if (!s->frame_pred_frame_dct) {
- if (has_mv)
+ if (has_mv)
put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
put_bits(&s->pb, 1, s->interlaced_dct);
}
@@ -519,9 +519,9 @@ void mpeg1_encode_mb(MpegEncContext *s,
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
-
+
if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
- (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
+ (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
((s->pict_type == P_TYPE && (motion_x | motion_y) == 0) ||
(s->pict_type == B_TYPE && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
@@ -531,7 +531,7 @@ void mpeg1_encode_mb(MpegEncContext *s,
s->misc_bits++;
s->last_bits++;
if(s->pict_type == P_TYPE){
- s->last_mv[0][1][0]= s->last_mv[0][0][0]=
+ s->last_mv[0][1][0]= s->last_mv[0][0][0]=
s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
}
} else {
@@ -541,7 +541,7 @@ void mpeg1_encode_mb(MpegEncContext *s,
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
-
+
if (s->pict_type == I_TYPE) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
@@ -563,7 +563,7 @@ void mpeg1_encode_mb(MpegEncContext *s,
s->misc_bits+= get_bits_diff(s);
s->i_count++;
memset(s->last_mv, 0, sizeof(s->last_mv));
- } else if (s->pict_type == P_TYPE) {
+ } else if (s->pict_type == P_TYPE) {
if(s->mv_type == MV_TYPE_16X16){
if (cbp != 0) {
if ((motion_x|motion_y) == 0) {
@@ -626,7 +626,7 @@ void mpeg1_encode_mb(MpegEncContext *s,
if(cbp)
put_bits(&s->pb, mbPatTable[cbp][1], mbPatTable[cbp][0]);
s->f_count++;
- } else{
+ } else{
static const int mb_type_len[4]={0,3,4,2}; //bak,for,bi
if(s->mv_type == MV_TYPE_16X16){
@@ -648,15 +648,15 @@ void mpeg1_encode_mb(MpegEncContext *s,
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
- mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
- mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
+ mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
+ mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
- mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
- mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
+ mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
+ mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
s->b_count++;
@@ -727,8 +727,8 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
/* zero vector */
code = 0;
put_bits(&s->pb,
- mbMotionVectorTable[0][1],
- mbMotionVectorTable[0][0]);
+ mbMotionVectorTable[0][1],
+ mbMotionVectorTable[0][0]);
} else {
bit_size = f_or_b_code - 1;
range = 1 << bit_size;
@@ -752,8 +752,8 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
assert(code > 0 && code <= 16);
put_bits(&s->pb,
- mbMotionVectorTable[code][1],
- mbMotionVectorTable[code][0]);
+ mbMotionVectorTable[code][1],
+ mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
@@ -771,38 +771,38 @@ void ff_mpeg1_encode_init(MpegEncContext *s)
if(!done){
int f_code;
int mv;
- int i;
+ int i;
done=1;
init_rl(&rl_mpeg1, 1);
- for(i=0; i<64; i++)
- {
- mpeg1_max_level[0][i]= rl_mpeg1.max_level[0][i];
- mpeg1_index_run[0][i]= rl_mpeg1.index_run[0][i];
- }
-
+ for(i=0; i<64; i++)
+ {
+ mpeg1_max_level[0][i]= rl_mpeg1.max_level[0][i];
+ mpeg1_index_run[0][i]= rl_mpeg1.index_run[0][i];
+ }
+
init_uni_ac_vlc(&rl_mpeg1, uni_mpeg1_ac_vlc_bits, uni_mpeg1_ac_vlc_len);
- /* build unified dc encoding tables */
- for(i=-255; i<256; i++)
- {
- int adiff, index;
- int bits, code;
- int diff=i;
-
- adiff = ABS(diff);
- if(diff<0) diff--;
- index = av_log2(2*adiff);
-
- bits= vlc_dc_lum_bits[index] + index;
- code= (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
- mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
-
- bits= vlc_dc_chroma_bits[index] + index;
- code= (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
- mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
- }
+ /* build unified dc encoding tables */
+ for(i=-255; i<256; i++)
+ {
+ int adiff, index;
+ int bits, code;
+ int diff=i;
+
+ adiff = ABS(diff);
+ if(diff<0) diff--;
+ index = av_log2(2*adiff);
+
+ bits= vlc_dc_lum_bits[index] + index;
+ code= (vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
+ mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
+
+ bits= vlc_dc_chroma_bits[index] + index;
+ code= (vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
+ mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
+ }
mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
@@ -818,7 +818,7 @@ void ff_mpeg1_encode_init(MpegEncContext *s)
range = 1 << bit_size;
val=mv;
- if (val < 0)
+ if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
@@ -832,7 +832,7 @@ void ff_mpeg1_encode_init(MpegEncContext *s)
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
-
+
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
@@ -868,32 +868,32 @@ static inline void encode_dc(MpegEncContext *s, int diff, int component)
}
if (component == 0) {
put_bits(
- &s->pb,
+ &s->pb,
vlc_dc_lum_bits[index] + index,
(vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
- &s->pb,
+ &s->pb,
vlc_dc_chroma_bits[index] + index,
(vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
}
}else{
if (component == 0) {
put_bits(
- &s->pb,
- mpeg1_lum_dc_uni[diff+255]&0xFF,
- mpeg1_lum_dc_uni[diff+255]>>8);
+ &s->pb,
+ mpeg1_lum_dc_uni[diff+255]&0xFF,
+ mpeg1_lum_dc_uni[diff+255]>>8);
} else {
put_bits(
- &s->pb,
- mpeg1_chr_dc_uni[diff+255]&0xFF,
- mpeg1_chr_dc_uni[diff+255]>>8);
+ &s->pb,
+ mpeg1_chr_dc_uni[diff+255]&0xFF,
+ mpeg1_chr_dc_uni[diff+255]>>8);
}
}
}
-static void mpeg1_encode_block(MpegEncContext *s,
- DCTELEM *block,
+static void mpeg1_encode_block(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
@@ -941,11 +941,11 @@ static void mpeg1_encode_block(MpegEncContext *s,
#if 0
if (level != 0)
dprintf("level[%d]=%d\n", i, level);
-#endif
+#endif
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
-
+
alevel= level;
MASK_ABS(sign, alevel)
sign&=1;
@@ -953,10 +953,10 @@ static void mpeg1_encode_block(MpegEncContext *s,
// code = get_rl_index(rl, 0, run, alevel);
if (alevel <= mpeg1_max_level[0][run]){
code= mpeg1_index_run[0][run] + alevel - 1;
- /* store the vlc & sign at once */
+ /* store the vlc & sign at once */
put_bits(&s->pb, mpeg1_vlc[code][1]+1, (mpeg1_vlc[code][0]<<1) + sign);
} else {
- /* escape seems to be pretty rare <5% so i dont optimize it */
+ /* escape seems to be pretty rare <5% so i dont optimize it */
put_bits(&s->pb, mpeg1_vlc[111/*rl->n*/][1], mpeg1_vlc[111/*rl->n*/][0]);
/* escape: only clip in this case */
put_bits(&s->pb, 6, run);
@@ -1000,26 +1000,26 @@ static void init_vlcs(void)
if (!done) {
done = 1;
- init_vlc(&dc_lum_vlc, DC_VLC_BITS, 12,
+ init_vlc(&dc_lum_vlc, DC_VLC_BITS, 12,
vlc_dc_lum_bits, 1, 1,
vlc_dc_lum_code, 2, 2, 1);
- init_vlc(&dc_chroma_vlc, DC_VLC_BITS, 12,
+ init_vlc(&dc_chroma_vlc, DC_VLC_BITS, 12,
vlc_dc_chroma_bits, 1, 1,
vlc_dc_chroma_code, 2, 2, 1);
- init_vlc(&mv_vlc, MV_VLC_BITS, 17,
+ init_vlc(&mv_vlc, MV_VLC_BITS, 17,
&mbMotionVectorTable[0][1], 2, 1,
&mbMotionVectorTable[0][0], 2, 1, 1);
- init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
+ init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
&mbAddrIncrTable[0][1], 2, 1,
&mbAddrIncrTable[0][0], 2, 1, 1);
init_vlc(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
&mbPatTable[0][1], 2, 1,
&mbPatTable[0][0], 2, 1, 1);
-
- init_vlc(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
+
+ init_vlc(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
&table_mb_ptype[0][1], 2, 1,
&table_mb_ptype[0][0], 2, 1, 1);
- init_vlc(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
+ init_vlc(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
&table_mb_btype[0][1], 2, 1,
&table_mb_btype[0][0], 2, 1, 1);
init_rl(&rl_mpeg1, 1);
@@ -1032,7 +1032,7 @@ static void init_vlcs(void)
static inline int get_dmv(MpegEncContext *s)
{
- if(get_bits1(&s->gb))
+ if(get_bits1(&s->gb))
return 1 - (get_bits1(&s->gb) << 1);
else
return 0;
@@ -1069,7 +1069,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
-
+
/* skip mb */
s->mb_intra = 0;
for(i=0;i<12;i++)
@@ -1089,25 +1089,25 @@ static int mpeg_decode_mb(MpegEncContext *s,
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,
+ 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,
if(IS_INTRA(mb_type))
return -1;
-
+
/* if B type, reuse previous vectors and directions */
s->mv[0][0][0] = s->last_mv[0][0][0];
s->mv[0][0][1] = s->last_mv[0][0][1];
s->mv[1][0][0] = s->last_mv[1][0][0];
s->mv[1][0][1] = s->last_mv[1][0][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));
- if((s->mv[0][0][0]|s->mv[0][0][1]|s->mv[1][0][0]|s->mv[1][0][1])==0)
+ if((s->mv[0][0][0]|s->mv[0][0][1]|s->mv[1][0][0]|s->mv[1][0][1])==0)
s->mb_skipped = 1;
}
@@ -1148,11 +1148,11 @@ static int mpeg_decode_mb(MpegEncContext *s,
// motion_type = 0; /* avoid warning */
if (IS_INTRA(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
-
+
if(!s->chroma_y_shift){
s->dsp.clear_blocks(s->block[6]);
}
-
+
/* compute dct type */
if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
!s->frame_pred_frame_dct) {
@@ -1161,15 +1161,15 @@ static int mpeg_decode_mb(MpegEncContext *s,
if (IS_QUANT(mb_type))
s->qscale = get_qscale(s);
-
+
if (s->concealment_motion_vectors) {
/* just parse them */
- if (s->picture_structure != PICT_FRAME)
+ if (s->picture_structure != PICT_FRAME)
skip_bits1(&s->gb); /* field select */
-
- s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
+
+ 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] =
+ 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 */
@@ -1234,7 +1234,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
assert(mb_type & MB_TYPE_L0L1);
//FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
/* get additionnal motion vector type */
- if (s->frame_pred_frame_dct)
+ if (s->frame_pred_frame_dct)
motion_type = MT_FRAME;
else{
motion_type = get_bits(&s->gb, 2);
@@ -1259,11 +1259,11 @@ static int mpeg_decode_mb(MpegEncContext *s,
case MT_FRAME: /* or MT_16X8 */
if (s->picture_structure == PICT_FRAME) {
/* MT_FRAME */
- mb_type |= MB_TYPE_16x16;
+ mb_type |= MB_TYPE_16x16;
s->mv_type = MV_TYPE_16X16;
- s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
+ 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] =
+ 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 mpeg1 */
if (s->full_pel[i]){
@@ -1272,7 +1272,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
}
} else {
/* MT_16X8 */
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
s->mv_type = MV_TYPE_16X8;
for(j=0;j<2;j++) {
s->field_select[i][j] = get_bits1(&s->gb);
@@ -1288,7 +1288,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
case MT_FIELD:
s->mv_type = MV_TYPE_FIELD;
if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
for(j=0;j<2;j++) {
s->field_select[i][j] = get_bits1(&s->gb);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
@@ -1303,7 +1303,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
dprintf("fmy=%d\n", val);
}
} else {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
s->field_select[i][0] = get_bits1(&s->gb);
for(k=0;k<2;k++) {
val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
@@ -1318,12 +1318,12 @@ static int mpeg_decode_mb(MpegEncContext *s,
{
int dmx, dmy, mx, my, m;
- mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
+ mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
s->last_mv[i][0][0]);
s->last_mv[i][0][0] = mx;
s->last_mv[i][1][0] = mx;
dmx = get_dmv(s);
- my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
+ my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
s->last_mv[i][0][1] >> 1);
dmy = get_dmv(s);
s->mv_type = MV_TYPE_DMV;
@@ -1338,7 +1338,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
s->mv[i][1][1] = my;//not used
if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
//m = 1 + 2 * s->top_field_first;
m = s->top_field_first ? 1 : 3;
@@ -1356,7 +1356,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
if(s->picture_structure == PICT_TOP_FIELD)
s->mv[i][2][1]--;
- else
+ else
s->mv[i][2][1]++;
}
}
@@ -1368,11 +1368,11 @@ static int mpeg_decode_mb(MpegEncContext *s,
}
}
}
-
+
s->mb_intra = 0;
if (HAS_CBP(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
-
+
if(!s->chroma_y_shift){
s->dsp.clear_blocks(s->block[6]);
}
@@ -1383,8 +1383,8 @@ static int mpeg_decode_mb(MpegEncContext *s,
return -1;
}
if(mb_block_count > 6){
- cbp<<= mb_block_count-6;
- cbp |= get_bits(&s->gb, mb_block_count-6);
+ cbp<<= mb_block_count-6;
+ cbp |= get_bits(&s->gb, mb_block_count-6);
}
#ifdef HAVE_XVMC
@@ -1394,7 +1394,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
if(s->swap_uv){
exchange_uv(s);
}
- }
+ }
#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
@@ -1409,7 +1409,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
}
}else{
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)
@@ -1443,7 +1443,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
}
}
}else{
- for(i=0;i<6;i++)
+ for(i=0;i<12;i++)
s->block_last_index[i] = -1;
}
}
@@ -1477,7 +1477,7 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
if (sign)
val = -val;
val += pred;
-
+
/* modulo decoding */
l= INT_BIT - 5 - shift;
val = (val<<l)>>l;
@@ -1505,8 +1505,8 @@ static inline int decode_dc(GetBitContext *gb, int component)
return diff;
}
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, i, j, run;
@@ -1528,12 +1528,12 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s,
dprintf("dc=%d diff=%d\n", dc, diff);
i = 0;
{
- OPEN_READER(re, &s->gb);
+ OPEN_READER(re, &s->gb);
/* now quantify & encode AC coefs */
for(;;) {
UPDATE_CACHE(re, &s->gb);
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) {
@@ -1578,8 +1578,8 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s,
return 0;
}
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, i, j, run;
@@ -1608,7 +1608,7 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s,
/* now quantify & encode AC coefs */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
+
if(level != 0) {
i += run;
j = scantable[i];
@@ -1683,7 +1683,7 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
/* now quantify & encode AC coefs */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
+
if(level != 0) {
i += run;
j = scantable[i];
@@ -1728,8 +1728,8 @@ end:
}
-static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, i, j, run;
@@ -1766,7 +1766,7 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
/* now quantify & encode AC coefs */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
+
if(level != 0) {
i += run;
j = scantable[i];
@@ -1792,7 +1792,7 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
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)
@@ -1804,13 +1804,13 @@ end:
CLOSE_READER(re, &s->gb);
}
block[63] ^= (mismatch & 1);
-
+
s->block_last_index[n] = i;
return 0;
}
-static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, i, j, run;
@@ -1836,7 +1836,7 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
/* now quantify & encode AC coefs */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
-
+
if(level != 0) {
i += run;
j = scantable[i];
@@ -1858,22 +1858,22 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
level= ((level*2+1)*qscale)>>1;
}
}
-
+
block[j] = level;
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break;
UPDATE_CACHE(re, &s->gb);
}
end:
- LAST_SKIP_BITS(re, &s->gb, 2);
+ LAST_SKIP_BITS(re, &s->gb, 2);
CLOSE_READER(re, &s->gb);
s->block_last_index[n] = i;
return 0;
}
-static inline int mpeg2_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, i, j, run;
@@ -1887,7 +1887,7 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s,
/* DC coef */
if (n < 4){
quant_matrix = s->intra_matrix;
- component = 0;
+ component = 0;
}else{
quant_matrix = s->chroma_intra_matrix;
component = (n&1) + 1;
@@ -1908,12 +1908,12 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s,
rl = &rl_mpeg1;
{
- OPEN_READER(re, &s->gb);
+ OPEN_READER(re, &s->gb);
/* now quantify & encode AC coefs */
for(;;) {
UPDATE_CACHE(re, &s->gb);
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) {
@@ -1940,20 +1940,20 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s,
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;
}
CLOSE_READER(re, &s->gb);
}
block[63]^= mismatch&1;
-
+
s->block_last_index[n] = i;
return 0;
}
-static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
- DCTELEM *block,
+static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
int n)
{
int level, dc, diff, j, run;
@@ -1966,7 +1966,7 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
/* DC coef */
if (n < 4){
quant_matrix = s->intra_matrix;
- component = 0;
+ component = 0;
}else{
quant_matrix = s->chroma_intra_matrix;
component = (n&1) + 1;
@@ -1984,12 +1984,12 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
rl = &rl_mpeg1;
{
- OPEN_READER(re, &s->gb);
+ OPEN_READER(re, &s->gb);
/* now quantify & encode AC coefs */
for(;;) {
UPDATE_CACHE(re, &s->gb);
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) {
@@ -2012,12 +2012,12 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
level= (level*qscale*quant_matrix[j])>>4;
}
}
-
+
block[j] = level;
}
CLOSE_READER(re, &s->gb);
}
-
+
s->block_last_index[n] = scantable - s->intra_scantable.permutated;
return 0;
}
@@ -2039,15 +2039,15 @@ static int mpeg_decode_init(AVCodecContext *avctx)
Mpeg1Context *s = avctx->priv_data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
int i;
-
+
//we need some parmutation to store
//matrixes, until MPV_common_init()
- //set the real permutatuon
+ //set the real permutatuon
for(i=0;i<64;i++)
s2->dsp.idct_permutation[i]=i;
MPV_decode_defaults(s2);
-
+
s->mpeg_enc_ctx.avctx= avctx;
s->mpeg_enc_ctx.flags= avctx->flags;
s->mpeg_enc_ctx.flags2= avctx->flags2;
@@ -2061,16 +2061,16 @@ static int mpeg_decode_init(AVCodecContext *avctx)
return 0;
}
-static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
+static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
const uint8_t *new_perm){
uint16_t temp_matrix[64];
int i;
memcpy(temp_matrix,matrix,64*sizeof(uint16_t));
-
+
for(i=0;i<64;i++){
matrix[new_perm[i]] = temp_matrix[old_perm[i]];
- }
+ }
}
//Call this function when we know all parameters
@@ -2081,13 +2081,13 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
uint8_t old_permutation[64];
if (
- (s1->mpeg_enc_ctx_allocated == 0)||
+ (s1->mpeg_enc_ctx_allocated == 0)||
avctx->coded_width != s->width ||
avctx->coded_height != s->height||
s1->save_aspect_info != s->aspect_ratio_info||
0)
{
-
+
if (s1->mpeg_enc_ctx_allocated) {
ParseContext pc= s->parse_context;
s->parse_context.buffer=0;
@@ -2095,8 +2095,8 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
s->parse_context= pc;
}
- if( (s->width == 0 )||(s->height == 0))
- return -2;
+ if( (s->width == 0 )||(s->height == 0))
+ return -2;
avcodec_set_dimensions(avctx, s->width, s->height);
avctx->bit_rate = s->bit_rate;
@@ -2117,28 +2117,28 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
}else{//mpeg2
//mpeg2 fps
av_reduce(
- &s->avctx->time_base.den,
- &s->avctx->time_base.num,
+ &s->avctx->time_base.den,
+ &s->avctx->time_base.num,
frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num,
frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
1<<30);
//mpeg2 aspect
if(s->aspect_ratio_info > 1){
if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) ){
- s->avctx->sample_aspect_ratio=
+ s->avctx->sample_aspect_ratio=
av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
+ mpeg2_aspect[s->aspect_ratio_info],
(AVRational){s->width, s->height}
);
}else{
- s->avctx->sample_aspect_ratio=
+ s->avctx->sample_aspect_ratio=
av_div_q(
- mpeg2_aspect[s->aspect_ratio_info],
+ mpeg2_aspect[s->aspect_ratio_info],
(AVRational){s1->pan_scan.width, s1->pan_scan.height}
);
- }
+ }
}else{
- s->avctx->sample_aspect_ratio=
+ s->avctx->sample_aspect_ratio=
mpeg2_aspect[s->aspect_ratio_info];
}
}//mpeg2
@@ -2161,7 +2161,7 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
- //quantization matrixes may need reordering
+ //quantization matrixes may need reordering
//if dct permutation is changed
memcpy(old_permutation,s->dsp.idct_permutation,64*sizeof(uint8_t));
@@ -2178,41 +2178,14 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
return 0;
}
-/* return the 8 bit start code value and update the search
- state. Return -1 if no start code found */
-static int find_start_code(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
-{
- const uint8_t *buf_ptr= *pbuf_ptr;
-
- buf_ptr++; //gurantees that -1 is within the array
- buf_end -= 2; // gurantees that +2 is within the array
-
- while (buf_ptr < buf_end) {
- if(*buf_ptr==0){
- while(buf_ptr < buf_end && buf_ptr[1]==0)
- buf_ptr++;
-
- if(buf_ptr[-1] == 0 && buf_ptr[1] == 1){
- *pbuf_ptr = buf_ptr+3;
- return buf_ptr[2] + 0x100;
- }
- }
- buf_ptr += 2;
- }
- buf_end += 2; //undo the hack above
-
- *pbuf_ptr = buf_end;
- return -1;
-}
-
-static int mpeg1_decode_picture(AVCodecContext *avctx,
+static int mpeg1_decode_picture(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
int ref, f_code, vbv_delay;
- if(mpeg_decode_postinit(s->avctx) < 0)
+ if(mpeg_decode_postinit(s->avctx) < 0)
return -2;
init_get_bits(&s->gb, buf, buf_size*8);
@@ -2241,10 +2214,10 @@ static int mpeg1_decode_picture(AVCodecContext *avctx,
}
s->current_picture.pict_type= s->pict_type;
s->current_picture.key_frame= s->pict_type == I_TYPE;
-
+
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);
-
+
s->y_dc_scale = 8;
s->c_dc_scale = 8;
s->first_slice = 1;
@@ -2282,7 +2255,7 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
s->avctx->sub_id = 2; /* indicates mpeg2 found */
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",
+ 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);
}
@@ -2303,10 +2276,10 @@ static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
skip_bits(&s->gb, 1); //marker
h= get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
-
+
s1->pan_scan.width= 16*w;
s1->pan_scan.height=16*h;
-
+
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h);
}
@@ -2319,16 +2292,16 @@ static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
nofco = 1;
if(s->progressive_sequence){
if(s->repeat_first_field){
- nofco++;
- if(s->top_field_first)
- nofco++;
- }
+ nofco++;
+ if(s->top_field_first)
+ nofco++;
+ }
}else{
if(s->picture_structure == PICT_FRAME){
nofco++;
- if(s->repeat_first_field)
- nofco++;
- }
+ if(s->repeat_first_field)
+ nofco++;
+ }
}
for(i=0; i<nofco; i++){
s1->pan_scan.position[i][0]= get_sbits(&s->gb, 16);
@@ -2336,11 +2309,11 @@ static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
s1->pan_scan.position[i][1]= get_sbits(&s->gb, 16);
skip_bits(&s->gb, 1); //marker
}
-
+
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\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],
+ av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\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]
);
}
@@ -2408,7 +2381,7 @@ static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
s->first_field ^= 1;
memset(s->mbskip_table, 0, s->mb_stride*s->mb_height);
}
-
+
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);
@@ -2416,7 +2389,7 @@ static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
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);
}
-
+
/* composite display not parsed */
dprintf("intra_dc_precision=%d\n", s->intra_dc_precision);
dprintf("picture_structure=%d\n", s->picture_structure);
@@ -2429,7 +2402,7 @@ static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
dprintf("progressive_frame=%d\n", s->progressive_frame);
}
-static void mpeg_decode_extension(AVCodecContext *avctx,
+static void mpeg_decode_extension(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
@@ -2437,7 +2410,7 @@ static void mpeg_decode_extension(AVCodecContext *avctx,
int ext_type;
init_get_bits(&s->gb, buf, buf_size*8);
-
+
ext_type = get_bits(&s->gb, 4);
switch(ext_type) {
case 0x1:
@@ -2486,22 +2459,22 @@ static int mpeg_field_start(MpegEncContext *s){
} else if (s->progressive_frame) {
s->current_picture_ptr->repeat_pict = 1;
}
- }
+ }
*s->current_picture_ptr->pan_scan= s1->pan_scan;
}else{ //second field
int i;
-
+
if(!s->current_picture_ptr){
av_log(s->avctx, AV_LOG_ERROR, "first field missing\n");
return -1;
}
-
+
for(i=0; i<4; i++){
s->current_picture.data[i] = s->current_picture_ptr->data[i];
if(s->picture_structure == PICT_BOTTOM_FIELD){
s->current_picture.data[i] += s->current_picture_ptr->linesize[i];
- }
+ }
}
}
#ifdef HAVE_XVMC
@@ -2538,7 +2511,7 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
av_log(s->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s->mb_height);
return -1;
}
-
+
init_get_bits(&s->gb, *buf, buf_size*8);
ff_mpeg1_clean_buffers(s);
@@ -2550,12 +2523,12 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n");
return -1;
}
-
+
/* extra slice info */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
-
+
s->mb_x=0;
for(;;) {
@@ -2582,15 +2555,15 @@ static int mpeg_decode_slice(Mpeg1Context *s1, 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",
+ 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 == I_TYPE ? "I" : (s->pict_type == P_TYPE ? "P" : (s->pict_type == B_TYPE ? "B" : "S")),
- s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"",
+ s->pict_type == I_TYPE ? "I" : (s->pict_type == P_TYPE ? "P" : (s->pict_type == B_TYPE ? "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" :"");
}
- }
-
+ }
+
for(;;) {
#ifdef HAVE_XVMC
//one 1 we memcpy blocks in xvmcvideo
@@ -2641,7 +2614,7 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
s->dest[2] += 16 >> (s->chroma_x_shift + lowres);
MPV_decode_mb(s, s->block);
-
+
if (++s->mb_x >= s->mb_width) {
const int mb_size= 16>>s->avctx->lowres;
@@ -2660,7 +2633,7 @@ static int mpeg_decode_slice(Mpeg1Context *s1, int mb_y,
}else
goto eos;
}
-
+
ff_init_block_index(s);
}
@@ -2710,7 +2683,7 @@ static int slice_decode_thread(AVCodecContext *c, void *arg){
ret= mpeg_decode_slice((Mpeg1Context*)s, mb_y, &buf, s->gb.buffer_end - buf);
emms_c();
-//av_log(c, AV_LOG_DEBUG, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
+//av_log(c, AV_LOG_DEBUG, "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->error_count);
if(ret < 0){
if(s->resync_mb_x>=0 && s->resync_mb_y>=0)
@@ -2718,28 +2691,29 @@ static int slice_decode_thread(AVCodecContext *c, void *arg){
}else{
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
}
-
+
if(s->mb_y == s->end_mb_y)
return 0;
-
- start_code = find_start_code(&buf, s->gb.buffer_end);
+
+ start_code= -1;
+ buf = ff_find_start_code(buf, s->gb.buffer_end, &start_code);
mb_y= start_code - SLICE_MIN_START_CODE;
if(mb_y < 0 || mb_y >= s->end_mb_y)
return -1;
}
-
+
return 0; //not reached
}
/**
* handles slice ends.
- * @return 1 if it seems to be the last slice of
+ * @return 1 if it seems to be the last slice of
*/
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
-
+
if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
return 0;
@@ -2776,7 +2750,7 @@ static int slice_end(AVCodecContext *avctx, AVFrame *pict)
}
}
-static int mpeg1_decode_sequence(AVCodecContext *avctx,
+static int mpeg1_decode_sequence(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
Mpeg1Context *s1 = avctx->priv_data;
@@ -2861,7 +2835,7 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
s->chroma_inter_matrix[j] = v;
}
}
-
+
if(show_bits(&s->gb, 23) != 0){
av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n");
return -1;
@@ -2878,11 +2852,11 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
s->out_format = FMT_MPEG1;
s->swap_uv = 0;//AFAIK VCR2 don't have SEQ_HEADER
if(s->flags & CODEC_FLAG_LOW_DELAY) s->low_delay=1;
-
+
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
s->avctx->rc_buffer_size, s->bit_rate);
-
+
return 0;
}
@@ -2911,11 +2885,11 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
-
+
if (MPV_common_init(s) < 0)
return -1;
exchange_uv(s);//common init reset pblocks, so we swap them here
- s->swap_uv = 1;// in case of xvmc we need to swap uv for each MB
+ s->swap_uv = 1;// in case of xvmc we need to swap uv for each MB
s1->mpeg_enc_ctx_allocated = 1;
for(i=0;i<64;i++) {
@@ -2940,7 +2914,7 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
}
-static void mpeg_decode_user_data(AVCodecContext *avctx,
+static void mpeg_decode_user_data(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
const uint8_t *p;
@@ -2969,7 +2943,7 @@ static void mpeg_decode_user_data(AVCodecContext *avctx,
}
}
-static void mpeg_decode_gop(AVCodecContext *avctx,
+static void mpeg_decode_gop(AVCodecContext *avctx,
const uint8_t *buf, int buf_size){
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
@@ -2982,7 +2956,7 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
init_get_bits(&s->gb, buf, buf_size*8);
drop_frame_flag = get_bits1(&s->gb);
-
+
time_code_hours=get_bits(&s->gb,5);
time_code_minutes = get_bits(&s->gb,6);
skip_bits1(&s->gb);//marker bit
@@ -2996,8 +2970,8 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) broken_link=%d\n",
- time_code_hours, time_code_minutes, time_code_seconds,
- time_code_pictures, broken_link);
+ time_code_hours, time_code_minutes, time_code_seconds,
+ time_code_pictures, broken_link);
}
/**
* finds the end of the current frame in the bitstream.
@@ -3006,14 +2980,12 @@ static void mpeg_decode_gop(AVCodecContext *avctx,
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
{
int i;
- uint32_t state;
-
- state= pc->state;
-
+ uint32_t state= pc->state;
+
i=0;
if(!pc->frame_start_found){
for(i=0; i<buf_size; i++){
- state= (state<<8) | buf[i];
+ i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
if(state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE){
i++;
pc->frame_start_found=1;
@@ -3021,28 +2993,28 @@ int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
}
}
}
-
+
if(pc->frame_start_found){
/* EOF considered as end of frame */
if (buf_size == 0)
return 0;
for(; i<buf_size; i++){
- state= (state<<8) | buf[i];
+ i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
if((state&0xFFFFFF00) == 0x100){
if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){
pc->frame_start_found=0;
- pc->state=-1;
+ pc->state=-1;
return i-3;
}
}
}
- }
+ }
pc->state= state;
return END_NOT_FOUND;
}
/* handle buffering and image synchronisation */
-static int mpeg_decode_frame(AVCodecContext *avctx,
+static int mpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
@@ -3055,28 +3027,28 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
dprintf("fill_buffer\n");
if (buf_size == 0) {
- /* special case for last picture */
- if (s2->low_delay==0 && s2->next_picture_ptr) {
- *picture= *(AVFrame*)s2->next_picture_ptr;
- s2->next_picture_ptr= NULL;
+ /* special case for last picture */
+ if (s2->low_delay==0 && s2->next_picture_ptr) {
+ *picture= *(AVFrame*)s2->next_picture_ptr;
+ s2->next_picture_ptr= NULL;
- *data_size = sizeof(AVFrame);
- }
+ *data_size = sizeof(AVFrame);
+ }
return 0;
}
if(s2->flags&CODEC_FLAG_TRUNCATED){
int next= ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size);
-
+
if( ff_combine_frame(&s2->parse_context, next, &buf, &buf_size) < 0 )
return buf_size;
- }
-
+ }
+
buf_ptr = buf;
buf_end = buf + buf_size;
-#if 0
- if (s->repeat_field % 2 == 1) {
+#if 0
+ if (s->repeat_field % 2 == 1) {
s->repeat_field++;
//fprintf(stderr,"\nRepeating last frame: %d -> %d! pict: %d %d", avctx->frame_number-1, avctx->frame_number,
// s2->picture_number, s->repeat_field);
@@ -3089,12 +3061,13 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
if(s->mpeg_enc_ctx_allocated==0 && avctx->codec_tag == ff_get_fourcc("VCR2"))
vcr2_init_sequence(avctx);
-
+
s->slice_count= 0;
-
+
for(;;) {
/* find start next code */
- start_code = find_start_code(&buf_ptr, buf_end);
+ start_code = -1;
+ buf_ptr = ff_find_start_code(buf_ptr,buf_end, &start_code);
if (start_code < 0){
if(s2->pict_type != B_TYPE || avctx->skip_frame <= AVDISCARD_DEFAULT){
if(avctx->thread_count > 1){
@@ -3111,7 +3084,7 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
}
return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
}
-
+
input_size = buf_end - buf_ptr;
if(avctx->debug & FF_DEBUG_STARTCODE){
@@ -3121,33 +3094,33 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
/* prepare data for next start code */
switch(start_code) {
case SEQ_START_CODE:
- mpeg1_decode_sequence(avctx, buf_ptr,
- input_size);
+ mpeg1_decode_sequence(avctx, buf_ptr,
+ input_size);
break;
-
+
case PICTURE_START_CODE:
/* we have a complete image : we try to decompress it */
- mpeg1_decode_picture(avctx,
- buf_ptr, input_size);
+ mpeg1_decode_picture(avctx,
+ buf_ptr, input_size);
break;
case EXT_START_CODE:
mpeg_decode_extension(avctx,
buf_ptr, input_size);
break;
case USER_START_CODE:
- mpeg_decode_user_data(avctx,
+ mpeg_decode_user_data(avctx,
buf_ptr, input_size);
break;
case GOP_START_CODE:
s2->first_field=0;
- mpeg_decode_gop(avctx,
+ mpeg_decode_gop(avctx,
buf_ptr, input_size);
break;
default:
if (start_code >= SLICE_MIN_START_CODE &&
start_code <= SLICE_MAX_START_CODE) {
int mb_y= start_code - SLICE_MIN_START_CODE;
-
+
if(s2->last_picture_ptr==NULL){
/* skip b frames if we dont have reference frames */
if(s2->pict_type==B_TYPE) break;
@@ -3162,25 +3135,25 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
break;
/* skip everything if we are in a hurry>=5 */
if(avctx->hurry_up>=5) break;
-
+
if (!s->mpeg_enc_ctx_allocated) break;
if(s2->codec_id == CODEC_ID_MPEG2VIDEO){
if(mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
break;
}
-
+
if(s2->first_slice){
s2->first_slice=0;
if(mpeg_field_start(s2) < 0)
return -1;
}
-
+
if(avctx->thread_count > 1){
int threshold= (s2->mb_height*s->slice_count + avctx->thread_count/2) / avctx->thread_count;
if(threshold <= mb_y){
MpegEncContext *thread_context= s2->thread_context[s->slice_count];
-
+
thread_context->start_mb_y= mb_y;
thread_context->end_mb_y = s2->mb_height;
if(s->slice_count){
@@ -3290,7 +3263,7 @@ AVCodec mpeg2video_encoder = {
static int mpeg_mc_decode_init(AVCodecContext *avctx){
Mpeg1Context *s;
- if( avctx->thread_count > 1)
+ if( avctx->thread_count > 1)
return -1;
if( !(avctx->slice_flags & SLICE_FLAG_CODED_ORDER) )
return -1;
@@ -3321,7 +3294,7 @@ AVCodec mpeg_xvmc_decoder = {
#endif
-/* this is ugly i know, but the alternative is too make
+/* this is ugly i know, but the alternative is too make
hundreds of vars global and prefix them with ff_mpeg1_
which is far uglier. */
-#include "mdec.c"
+#include "mdec.c"
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 21:14:40 +0000