/*
- * MPEG1/2 decoder
- * Copyright (c) 2000,2001 Fabrice Bellard.
+ * MPEG-1/2 decoder
+ * Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*/
/**
- * @file mpeg12.c
- * MPEG1/2 decoder
+ * @file
+ * MPEG-1/2 decoder
*/
//#define DEBUG
+#include "internal.h"
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mpeg12data.h"
#include "mpeg12decdata.h"
#include "bytestream.h"
+#include "vdpau_internal.h"
+#include "xvmc_internal.h"
//#undef NDEBUG
//#include <assert.h>
-#define DC_VLC_BITS 9
#define MV_VLC_BITS 9
#define MBINCR_VLC_BITS 9
#define MB_PAT_VLC_BITS 9
#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
-#define TEX_VLC_BITS 9
-static inline int mpeg1_decode_block_inter(MpegEncContext *s,
+static inline int mpeg1_decode_block_intra(MpegEncContext *s,
DCTELEM *block,
int n);
-static inline int mpeg1_decode_block_intra(MpegEncContext *s,
+static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
int n);
static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n);
static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred);
static void exchange_uv(MpegEncContext *s);
-extern int XVMC_field_start(MpegEncContext *s, AVCodecContext *avctx);
-extern int XVMC_field_end(MpegEncContext *s);
-extern void XVMC_pack_pblocks(MpegEncContext *s,int cbp);
-extern void XVMC_init_block(MpegEncContext *s);//set s->block
-
-static const enum PixelFormat pixfmt_yuv_420[]= {PIX_FMT_YUV420P,-1};
-static const enum PixelFormat pixfmt_yuv_422[]= {PIX_FMT_YUV422P,-1};
-static const enum PixelFormat pixfmt_yuv_444[]= {PIX_FMT_YUV444P,-1};
static const enum PixelFormat pixfmt_xvmc_mpg2_420[] = {
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_XVMC_MPEG2_MC,
- -1};
+ PIX_FMT_NONE};
uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
-static void init_2d_vlc_rl(RLTable *rl, int use_static)
-{
- int i;
- 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);
+#define INIT_2D_VLC_RL(rl, static_size)\
+{\
+ static RL_VLC_ELEM rl_vlc_table[static_size];\
+ INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
+ &rl.table_vlc[0][1], 4, 2,\
+ &rl.table_vlc[0][0], 4, 2, static_size);\
+\
+ rl.rl_vlc[0]= rl_vlc_table;\
+ init_2d_vlc_rl(&rl);\
+}
- 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));
+static void init_2d_vlc_rl(RLTable *rl)
+{
+ int i;
for(i=0; i<rl->vlc.table_size; i++){
int code= rl->vlc.table[i][0];
{
s->y_dc_scale_table=
- s->c_dc_scale_table= mpeg2_dc_scale_table[s->intra_dc_precision];
+ s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];
}
/******************************************/
/* decoding */
-static VLC dc_lum_vlc;
-static VLC dc_chroma_vlc;
+VLC ff_dc_lum_vlc;
+VLC ff_dc_chroma_vlc;
+
static VLC mv_vlc;
static VLC mbincr_vlc;
static VLC mb_ptype_vlc;
static VLC mb_btype_vlc;
static VLC mb_pat_vlc;
-static void init_vlcs(void)
+av_cold void ff_mpeg12_init_vlcs(void)
{
static int done = 0;
if (!done) {
done = 1;
- init_vlc(&dc_lum_vlc, DC_VLC_BITS, 12,
+ INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_lum_bits, 1, 1,
- ff_mpeg12_vlc_dc_lum_code, 2, 2, 1);
- init_vlc(&dc_chroma_vlc, DC_VLC_BITS, 12,
+ ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
+ INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
- ff_mpeg12_vlc_dc_chroma_code, 2, 2, 1);
- init_vlc(&mv_vlc, MV_VLC_BITS, 17,
+ ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
+ INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 17,
&ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
- &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 1);
- init_vlc(&mbincr_vlc, MBINCR_VLC_BITS, 36,
+ &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
+ INIT_VLC_STATIC(&mbincr_vlc, MBINCR_VLC_BITS, 36,
&ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
- &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 1);
- init_vlc(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
+ &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
+ INIT_VLC_STATIC(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
&ff_mpeg12_mbPatTable[0][1], 2, 1,
- &ff_mpeg12_mbPatTable[0][0], 2, 1, 1);
+ &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
- init_vlc(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
+ INIT_VLC_STATIC(&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,
+ &table_mb_ptype[0][0], 2, 1, 64);
+ INIT_VLC_STATIC(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
&table_mb_btype[0][1], 2, 1,
- &table_mb_btype[0][0], 2, 1, 1);
+ &table_mb_btype[0][0], 2, 1, 64);
init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
- init_2d_vlc_rl(&ff_rl_mpeg1, 1);
- init_2d_vlc_rl(&ff_rl_mpeg2, 1);
+ INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
+ INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
}
}
}
}
-/* motion type (for mpeg2) */
+/* motion type (for MPEG-2) */
#define MT_FIELD 1
#define MT_FRAME 2
#define MT_16X8 2
int i, j, k, cbp, val, mb_type, motion_type;
const int mb_block_count = 4 + (1<< s->chroma_format);
- dprintf(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
+ av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
assert(s->mb_skipped==0);
if (s->mb_skip_run-- != 0) {
- if(s->pict_type == I_TYPE){
- 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++)
- s->block_last_index[i] = -1;
- if(s->picture_structure == PICT_FRAME)
- s->mv_type = MV_TYPE_16X16;
- else
- s->mv_type = MV_TYPE_FIELD;
- if (s->pict_type == P_TYPE) {
- /* if P type, zero motion vector is implied */
- s->mv_dir = MV_DIR_FORWARD;
- s->mv[0][0][0] = s->mv[0][0][1] = 0;
- s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0;
- s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0;
- s->field_select[0][0]= s->picture_structure - 1;
+ if (s->pict_type == FF_P_TYPE) {
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;
} else {
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 ]=
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));
switch(s->pict_type) {
default:
- case I_TYPE:
+ case FF_I_TYPE:
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);
mb_type = MB_TYPE_INTRA;
}
break;
- case P_TYPE:
+ case FF_P_TYPE:
mb_type = get_vlc2(&s->gb, 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);
}
mb_type = ptype2mb_type[ mb_type ];
break;
- case B_TYPE:
+ case FF_B_TYPE:
mb_type = get_vlc2(&s->gb, 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);
mb_type = btype2mb_type[ mb_type ];
break;
}
- dprintf(s->avctx, "mb_type=%x\n", mb_type);
+ av_dlog(s->avctx, "mb_type=%x\n", mb_type);
// motion_type = 0; /* avoid warning */
if (IS_INTRA(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
s->dsp.clear_blocks(s->block[6]);
}
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
+ /* compute DCT type */
+ if (s->picture_structure == PICT_FRAME && //FIXME add an interlaced_dct coded var?
!s->frame_pred_frame_dct) {
s->interlaced_dct = get_bits1(&s->gb);
}
}else
memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
s->mb_intra = 1;
-#ifdef HAVE_XVMC
- //one 1 we memcpy blocks in xvmcvideo
- if(s->avctx->xvmc_acceleration > 1){
- XVMC_pack_pblocks(s,-1);//inter are always full blocks
+ //if 1, we memcpy blocks in xvmcvideo
+ if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1){
+ ff_xvmc_pack_pblocks(s,-1);//inter are always full blocks
if(s->swap_uv){
exchange_uv(s);
}
}
-#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
if(s->flags2 & CODEC_FLAG2_FAST){
for(i=0;i<6;i++) {
- mpeg2_fast_decode_block_intra(s, s->pblocks[i], i);
+ mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
}
}else{
for(i=0;i<mb_block_count;i++) {
- if (mpeg2_decode_block_intra(s, s->pblocks[i], i) < 0)
+ if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
}
}
} else {
for(i=0;i<6;i++) {
- if (mpeg1_decode_block_intra(s, s->pblocks[i], i) < 0)
+ if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
return -1;
}
}
if (mb_type & MB_TYPE_ZERO_MV){
assert(mb_type & MB_TYPE_CBP);
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
- !s->frame_pred_frame_dct) {
- s->interlaced_dct = get_bits1(&s->gb);
- }
-
- if (IS_QUANT(mb_type))
- s->qscale = get_qscale(s);
-
s->mv_dir = MV_DIR_FORWARD;
- if(s->picture_structure == PICT_FRAME)
+ if(s->picture_structure == PICT_FRAME){
+ if(!s->frame_pred_frame_dct)
+ s->interlaced_dct = get_bits1(&s->gb);
s->mv_type = MV_TYPE_16X16;
- else{
+ }else{
s->mv_type = MV_TYPE_FIELD;
mb_type |= MB_TYPE_INTERLACED;
s->field_select[0][0]= s->picture_structure - 1;
}
+
+ if (IS_QUANT(mb_type))
+ s->qscale = get_qscale(s);
+
s->last_mv[0][0][0] = 0;
s->last_mv[0][0][1] = 0;
s->last_mv[0][1][0] = 0;
motion_type = MT_FRAME;
else{
motion_type = get_bits(&s->gb, 2);
- }
-
- /* compute dct type */
- if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var?
- !s->frame_pred_frame_dct && HAS_CBP(mb_type)) {
- s->interlaced_dct = get_bits1(&s->gb);
+ if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
+ s->interlaced_dct = get_bits1(&s->gb);
}
if (IS_QUANT(mb_type))
s->qscale = get_qscale(s);
/* motion vectors */
- s->mv_dir = 0;
- for(i=0;i<2;i++) {
- if (USES_LIST(mb_type, i)) {
- s->mv_dir |= (MV_DIR_FORWARD >> i);
- dprintf(s->avctx, "motion_type=%d\n", motion_type);
- switch(motion_type) {
- case MT_FRAME: /* or MT_16X8 */
- if (s->picture_structure == PICT_FRAME) {
+ s->mv_dir= (mb_type>>13)&3;
+ av_dlog(s->avctx, "motion_type=%d\n", motion_type);
+ switch(motion_type) {
+ case MT_FRAME: /* or MT_16X8 */
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16;
+ s->mv_type = MV_TYPE_16X16;
+ for(i=0;i<2;i++) {
+ if (USES_LIST(mb_type, i)) {
/* MT_FRAME */
- 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] =
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 mpeg1 */
+ /* full_pel: only for MPEG-1 */
if (s->full_pel[i]){
s->mv[i][0][0] <<= 1;
s->mv[i][0][1] <<= 1;
}
- } else {
+ }
+ }
+ } else {
+ 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)) {
/* MT_16X8 */
- 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);
for(k=0;k<2;k++) {
}
}
}
- break;
- case MT_FIELD:
- s->mv_type = MV_TYPE_FIELD;
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ }
+ }
+ break;
+ case MT_FIELD:
+ s->mv_type = MV_TYPE_FIELD;
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
+ for(i=0;i<2;i++) {
+ if (USES_LIST(mb_type, i)) {
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],
s->last_mv[i][j][0]);
s->last_mv[i][j][0] = val;
s->mv[i][j][0] = val;
- dprintf(s->avctx, "fmx=%d\n", val);
+ av_dlog(s->avctx, "fmx=%d\n", val);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
s->last_mv[i][j][1] >> 1);
s->last_mv[i][j][1] = val << 1;
s->mv[i][j][1] = val;
- dprintf(s->avctx, "fmy=%d\n", val);
+ av_dlog(s->avctx, "fmy=%d\n", val);
}
- } else {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ }
+ }
+ } else {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+ for(i=0;i<2;i++) {
+ if (USES_LIST(mb_type, i)) {
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],
s->mv[i][0][k] = val;
}
}
- break;
- case MT_DMV:
- {
- int dmx, dmy, mx, my, m;
-
- 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],
- s->last_mv[i][0][1] >> 1);
- dmy = get_dmv(s);
- s->mv_type = MV_TYPE_DMV;
-
-
- s->last_mv[i][0][1] = my<<1;
- s->last_mv[i][1][1] = my<<1;
-
- s->mv[i][0][0] = mx;
- s->mv[i][0][1] = my;
- s->mv[i][1][0] = mx;//not used
- s->mv[i][1][1] = my;//not used
-
- if (s->picture_structure == PICT_FRAME) {
- mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
-
- //m = 1 + 2 * s->top_field_first;
- m = s->top_field_first ? 1 : 3;
-
- /* top -> top pred */
- s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
- m = 4 - m;
- s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
- s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
- } else {
- mb_type |= MB_TYPE_16x16;
-
- s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
- s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
- if(s->picture_structure == PICT_TOP_FIELD)
- s->mv[i][2][1]--;
- else
- s->mv[i][2][1]++;
- }
+ }
+ }
+ break;
+ case MT_DMV:
+ s->mv_type = MV_TYPE_DMV;
+ for(i=0;i<2;i++) {
+ if (USES_LIST(mb_type, i)) {
+ int dmx, dmy, mx, my, m;
+ const int my_shift= s->picture_structure == PICT_FRAME;
+
+ 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],
+ s->last_mv[i][0][1] >> my_shift);
+ dmy = get_dmv(s);
+
+
+ s->last_mv[i][0][1] = my<<my_shift;
+ s->last_mv[i][1][1] = my<<my_shift;
+
+ s->mv[i][0][0] = mx;
+ s->mv[i][0][1] = my;
+ s->mv[i][1][0] = mx;//not used
+ s->mv[i][1][1] = my;//not used
+
+ if (s->picture_structure == PICT_FRAME) {
+ mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
+
+ //m = 1 + 2 * s->top_field_first;
+ m = s->top_field_first ? 1 : 3;
+
+ /* top -> top pred */
+ s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
+ m = 4 - m;
+ s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
+ s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
+ } else {
+ mb_type |= MB_TYPE_16x16;
+
+ s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
+ s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
+ if(s->picture_structure == PICT_TOP_FIELD)
+ s->mv[i][2][1]--;
+ else
+ s->mv[i][2][1]++;
}
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
- return -1;
}
}
+ break;
+ default:
+ av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
}
}
if (HAS_CBP(mb_type)) {
s->dsp.clear_blocks(s->block[0]);
- if(!s->chroma_y_shift){
- s->dsp.clear_blocks(s->block[6]);
- }
-
cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
- if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){
- av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
- return -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]);
+ }
+ if (cbp <= 0){
+ av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
}
-#ifdef HAVE_XVMC
- //on 1 we memcpy blocks in xvmcvideo
- if(s->avctx->xvmc_acceleration > 1){
- XVMC_pack_pblocks(s,cbp);
+ //if 1, we memcpy blocks in xvmcvideo
+ if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1){
+ ff_xvmc_pack_pblocks(s,cbp);
if(s->swap_uv){
exchange_uv(s);
}
}
-#endif
if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
if(s->flags2 & CODEC_FLAG2_FAST){
for(i=0;i<6;i++) {
if(cbp & 32) {
- mpeg2_fast_decode_block_non_intra(s, s->pblocks[i], i);
+ mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
} else {
s->block_last_index[i] = -1;
}
for(i=0;i<mb_block_count;i++) {
if ( cbp & (1<<11) ) {
- if (mpeg2_decode_block_non_intra(s, s->pblocks[i], i) < 0)
+ if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
return -1;
} else {
s->block_last_index[i] = -1;
if(s->flags2 & CODEC_FLAG2_FAST){
for(i=0;i<6;i++) {
if (cbp & 32) {
- mpeg1_fast_decode_block_inter(s, s->pblocks[i], i);
+ mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
} else {
s->block_last_index[i] = -1;
}
}else{
for(i=0;i<6;i++) {
if (cbp & 32) {
- if (mpeg1_decode_block_inter(s, s->pblocks[i], i) < 0)
+ if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
return -1;
} else {
s->block_last_index[i] = -1;
return 0;
}
-/* as h263, but only 17 codes */
+/* as H.263, but only 17 codes */
static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
{
int code, sign, val, l, shift;
return val;
}
-static inline int decode_dc(GetBitContext *gb, int component)
-{
- int code, diff;
-
- if (component == 0) {
- code = get_vlc2(gb, dc_lum_vlc.table, DC_VLC_BITS, 2);
- } else {
- code = get_vlc2(gb, dc_chroma_vlc.table, DC_VLC_BITS, 2);
- }
- if (code < 0){
- av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
- return 0xffff;
- }
- if (code == 0) {
- diff = 0;
- } else {
- diff = get_xbits(gb, code);
- }
- return diff;
-}
-
static inline int mpeg1_decode_block_intra(MpegEncContext *s,
DCTELEM *block,
int n)
const uint16_t *quant_matrix= s->intra_matrix;
const int qscale= s->qscale;
- /* DC coef */
+ /* DC coefficient */
component = (n <= 3 ? 0 : n - 4 + 1);
diff = decode_dc(&s->gb, component);
if (diff >= 0xffff)
dc = s->last_dc[component];
dc += diff;
s->last_dc[component] = dc;
- block[0] = dc<<3;
- dprintf(s->avctx, "dc=%d diff=%d\n", dc, diff);
+ block[0] = dc*quant_matrix[0];
+ av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
i = 0;
{
OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
+ /* 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);
return 0;
}
+int ff_mpeg1_decode_block_intra(MpegEncContext *s,
+ DCTELEM *block,
+ int n)
+{
+ return mpeg1_decode_block_intra(s, block, n);
+}
+
static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
int n)
{
OPEN_READER(re, &s->gb);
i = -1;
- /* special case for the first coef. no need to add a 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)) <= (int32_t)0xBFFFFFFF)
goto end;
}
-
- /* now quantify & encode AC coefs */
+ /* now quantify & encode AC coefficients */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
{
OPEN_READER(re, &s->gb);
i = -1;
- /* special case for the first coef. no need to add a 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)>>1;
goto end;
}
- /* now quantify & encode AC coefs */
+ /* now quantify & encode AC coefficients */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
else
quant_matrix = s->chroma_inter_matrix;
- /* special case for the first coef. no need to add a 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;
goto end;
}
- /* now quantify & encode AC coefs */
+ /* now quantify & encode AC coefficients */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
OPEN_READER(re, &s->gb);
i = -1;
- /* special case for the first coef. no need to add a 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)>>1;
goto end;
}
- /* now quantify & encode AC coefs */
+ /* now quantify & encode AC coefficients */
for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
const int qscale= s->qscale;
int mismatch;
- /* DC coef */
+ /* DC coefficient */
if (n < 4){
quant_matrix = s->intra_matrix;
component = 0;
dc += diff;
s->last_dc[component] = dc;
block[0] = dc << (3 - s->intra_dc_precision);
- dprintf(s->avctx, "dc=%d\n", block[0]);
+ av_dlog(s->avctx, "dc=%d\n", block[0]);
mismatch = block[0] ^ 1;
i = 0;
if (s->intra_vlc_format)
{
OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
+ /* 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);
const uint16_t *quant_matrix;
const int qscale= s->qscale;
- /* DC coef */
+ /* DC coefficient */
if (n < 4){
quant_matrix = s->intra_matrix;
component = 0;
{
OPEN_READER(re, &s->gb);
- /* now quantify & encode AC coefs */
+ /* 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);
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 */
+ AVPanScan pan_scan; /**< some temporary storage for the panscan */
int slice_count;
int swap_uv;//indicate VCR2
int save_aspect_info;
- int save_width, save_height;
+ 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?
} Mpeg1Context;
-static int mpeg_decode_init(AVCodecContext *avctx)
+static av_cold 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
+ /* 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;
s->mpeg_enc_ctx.flags= avctx->flags;
s->mpeg_enc_ctx.flags2= avctx->flags2;
ff_mpeg12_common_init(&s->mpeg_enc_ctx);
- init_vlcs();
+ ff_mpeg12_init_vlcs();
s->mpeg_enc_ctx_allocated = 0;
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;
+ if (avctx->codec->id == CODEC_ID_MPEG1VIDEO)
+ avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
+ else
+ avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
return 0;
}
}
}
-//Call this function when we know all parameters
-//it may be called in different places for mpeg1 and mpeg2
+static enum PixelFormat mpeg_get_pixelformat(AVCodecContext *avctx){
+ Mpeg1Context *s1 = avctx->priv_data;
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
+
+ if(avctx->xvmc_acceleration)
+ return avctx->get_format(avctx,pixfmt_xvmc_mpg2_420);
+ else if(avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
+ if(avctx->codec_id == CODEC_ID_MPEG1VIDEO)
+ return PIX_FMT_VDPAU_MPEG1;
+ else
+ return PIX_FMT_VDPAU_MPEG2;
+ }else{
+ if(s->chroma_format < 2)
+ return avctx->get_format(avctx,ff_hwaccel_pixfmt_list_420);
+ else if(s->chroma_format == 2)
+ return PIX_FMT_YUV422P;
+ else
+ return PIX_FMT_YUV444P;
+ }
+}
+
+/* Call this function when we know all parameters.
+ * It may be called in different places for MPEG-1 and MPEG-2. */
static int mpeg_decode_postinit(AVCodecContext *avctx){
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
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)
{
s1->save_aspect_info = s->aspect_ratio_info;
s1->save_width = s->width;
s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
- //low_delay may be forced, in this case we will have B frames
- //that behave like P frames
+ /* low_delay may be forced, in this case we will have B-frames
+ * that behave like P-frames. */
avctx->has_b_frames = !(s->low_delay);
- if(avctx->sub_id==1){//s->codec_id==avctx->codec_id==CODEC_ID
- //mpeg1 fps
+ assert((avctx->sub_id==1) == (avctx->codec_id==CODEC_ID_MPEG1VIDEO));
+ if(avctx->codec_id==CODEC_ID_MPEG1VIDEO){
+ //MPEG-1 fps
avctx->time_base.den= ff_frame_rate_tab[s->frame_rate_index].num;
avctx->time_base.num= ff_frame_rate_tab[s->frame_rate_index].den;
- //mpeg1 aspect
+ //MPEG-1 aspect
avctx->sample_aspect_ratio= av_d2q(
1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255);
-
- }else{//mpeg2
- //mpeg2 fps
+ avctx->ticks_per_frame=1;
+ }else{//MPEG-2
+ //MPEG-2 fps
av_reduce(
&s->avctx->time_base.den,
&s->avctx->time_base.num,
- ff_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num,
+ ff_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
ff_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
1<<30);
- //mpeg2 aspect
+ avctx->ticks_per_frame=2;
+ //MPEG-2 aspect
if(s->aspect_ratio_info > 1){
- if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) ){
+ //we ignore the spec here as reality does not match the spec, see for example
+ // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg
+ if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) || 1){
s->avctx->sample_aspect_ratio=
av_div_q(
ff_mpeg2_aspect[s->aspect_ratio_info],
s->avctx->sample_aspect_ratio=
ff_mpeg2_aspect[s->aspect_ratio_info];
}
- }//mpeg2
+ }//MPEG-2
- if(avctx->xvmc_acceleration){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_xvmc_mpg2_420);
- }else{
- if(s->chroma_format < 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_420);
- }else
- if(s->chroma_format == 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_422);
- }else
- if(s->chroma_format > 2){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_444);
- }
- }
+ avctx->pix_fmt = mpeg_get_pixelformat(avctx);
+ avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
//until then pix_fmt may be changed right after codec init
- if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
+ if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT ||
+ avctx->hwaccel ||
+ s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU )
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
- //quantization matrixes may need reordering
- //if dct permutation is changed
+ /* Quantization matrices may need reordering
+ * if DCT permutation is changed. */
memcpy(old_permutation,s->dsp.idct_permutation,64*sizeof(uint8_t));
if (MPV_common_init(s) < 0)
MpegEncContext *s = &s1->mpeg_enc_ctx;
int ref, f_code, vbv_delay;
- if(mpeg_decode_postinit(s->avctx) < 0)
- return -2;
-
init_get_bits(&s->gb, buf, buf_size*8);
ref = get_bits(&s->gb, 10); /* temporal ref */
return -1;
vbv_delay= get_bits(&s->gb, 16);
- if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) {
+ if (s->pict_type == FF_P_TYPE || s->pict_type == FF_B_TYPE) {
s->full_pel[0] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
+ if (f_code == 0 && avctx->error_recognition >= FF_ER_COMPLIANT)
return -1;
s->mpeg_f_code[0][0] = f_code;
s->mpeg_f_code[0][1] = f_code;
}
- if (s->pict_type == B_TYPE) {
+ if (s->pict_type == FF_B_TYPE) {
s->full_pel[1] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && avctx->error_resilience >= FF_ER_COMPLIANT)
+ if (f_code == 0 && avctx->error_recognition >= FF_ER_COMPLIANT)
return -1;
s->mpeg_f_code[1][0] = f_code;
s->mpeg_f_code[1][1] = f_code;
}
s->current_picture.pict_type= s->pict_type;
- s->current_picture.key_frame= s->pict_type == I_TYPE;
+ s->current_picture.key_frame= s->pict_type == FF_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;
return 0;
}
int horiz_size_ext, vert_size_ext;
int bit_rate_ext;
- skip_bits(&s->gb, 1); /* profil and level esc*/
+ 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 */
s1->frame_rate_ext.num = get_bits(&s->gb, 2)+1;
s1->frame_rate_ext.den = get_bits(&s->gb, 5)+1;
- dprintf(s->avctx, "sequence extension\n");
+ av_dlog(s->avctx, "sequence extension\n");
s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG2VIDEO;
- s->avctx->sub_id = 2; /* indicates mpeg2 found */
+ s->avctx->sub_id = 2; /* indicates MPEG-2 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",
skip_bits(&s->gb, 3); /* video format */
color_description= get_bits1(&s->gb);
if(color_description){
- skip_bits(&s->gb, 8); /* color primaries */
- skip_bits(&s->gb, 8); /* transfer_characteristics */
- skip_bits(&s->gb, 8); /* matrix_coefficients */
+ s->avctx->color_primaries= get_bits(&s->gb, 8);
+ s->avctx->color_trc = get_bits(&s->gb, 8);
+ s->avctx->colorspace = get_bits(&s->gb, 8);
}
w= get_bits(&s->gb, 14);
skip_bits(&s->gb, 1); //marker
h= get_bits(&s->gb, 14);
- skip_bits(&s->gb, 1); //marker
+ // remaining 3 bits are zero padding
s1->pan_scan.width= 16*w;
s1->pan_scan.height=16*h;
);
}
-static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
-{
- int i, v, j;
-
- dprintf(s->avctx, "matrix extension\n");
+static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra){
+ int i;
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_intra_matrix[j] = v;
+ for(i=0; i<64; i++) {
+ int j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
+ int v = get_bits(&s->gb, 8);
+ if(v==0){
+ av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n");
+ return -1;
}
- }
- if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- j= s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->chroma_inter_matrix[j] = v;
+ if(intra && i==0 && v!=8){
+ av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
+ v= 8; // needed by pink.mpg / issue1046
}
+ matrix0[j] = v;
+ if(matrix1)
+ matrix1[j] = v;
}
+ return 0;
+}
+
+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);
}
-static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
+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->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");
+ 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= FF_I_TYPE;
+ else
+ s->pict_type= FF_P_TYPE;
+ }else
+ s->pict_type= FF_B_TYPE;
+ s->current_picture.pict_type= s->pict_type;
+ s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
+ }
s->intra_dc_precision = get_bits(&s->gb, 2);
s->picture_structure = get_bits(&s->gb, 2);
s->top_field_first = get_bits1(&s->gb);
s->chroma_420_type = get_bits1(&s->gb);
s->progressive_frame = get_bits1(&s->gb);
+ 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");
+ }
+
+ 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){
+ av_log(s->avctx, AV_LOG_ERROR, "invalid frame_pred_frame_dct\n");
+ s->frame_pred_frame_dct= 1;
+ }
+
if(s->picture_structure == PICT_FRAME){
s->first_field=0;
s->v_edge_pos= 16*s->mb_height;
}
/* composite display not parsed */
- dprintf(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
- dprintf(s->avctx, "picture_structure=%d\n", s->picture_structure);
- dprintf(s->avctx, "top field first=%d\n", s->top_field_first);
- dprintf(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
- dprintf(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
- dprintf(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
- dprintf(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
- dprintf(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
- dprintf(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
-}
-
-static void mpeg_decode_extension(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
-{
- Mpeg1Context *s1 = avctx->priv_data;
- MpegEncContext *s = &s1->mpeg_enc_ctx;
- int ext_type;
-
- init_get_bits(&s->gb, buf, buf_size*8);
-
- ext_type = get_bits(&s->gb, 4);
- switch(ext_type) {
- case 0x1:
- mpeg_decode_sequence_extension(s1);
- break;
- case 0x2:
- mpeg_decode_sequence_display_extension(s1);
- break;
- case 0x3:
- mpeg_decode_quant_matrix_extension(s);
- break;
- case 0x7:
- mpeg_decode_picture_display_extension(s1);
- break;
- case 0x8:
- mpeg_decode_picture_coding_extension(s);
- break;
- }
+ av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
+ av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure);
+ av_dlog(s->avctx, "top field first=%d\n", s->top_field_first);
+ av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
+ av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
+ av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
+ av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
+ av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
+ av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
}
static void exchange_uv(MpegEncContext *s){
- short * tmp = s->pblocks[4];
+ DCTELEM (*tmp)[64];
+
+ tmp = s->pblocks[4];
s->pblocks[4] = s->pblocks[5];
s->pblocks[5] = tmp;
}
-static int mpeg_field_start(MpegEncContext *s){
+static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size){
AVCodecContext *avctx= s->avctx;
Mpeg1Context *s1 = (Mpeg1Context*)s;
}
}
}
-#ifdef HAVE_XVMC
+
+ if (avctx->hwaccel) {
+ if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
+ return -1;
+ }
+
// MPV_frame_start will call this function too,
// but we need to call it on every field
- if(s->avctx->xvmc_acceleration)
- XVMC_field_start(s,avctx);
-#endif
+ if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+ if(ff_xvmc_field_start(s,avctx) < 0)
+ return -1;
return 0;
}
{
MpegEncContext *s = &s1->mpeg_enc_ctx;
AVCodecContext *avctx= s->avctx;
- int ret;
const int field_pic= s->picture_structure != PICT_FRAME;
const int lowres= s->avctx->lowres;
s->resync_mb_x=
s->resync_mb_y= -1;
- if (mb_y<<field_pic >= s->mb_height){
- av_log(s->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s->mb_height);
- return -1;
- }
+ assert(mb_y < s->mb_height);
init_get_bits(&s->gb, *buf, buf_size*8);
s->mb_x=0;
- for(;;) {
- int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
- if (code < 0){
- av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
- return -1;
- }
- if (code >= 33) {
- if (code == 33) {
- s->mb_x += 33;
+ if(mb_y==0 && s->codec_tag == AV_RL32("SLIF")){
+ skip_bits1(&s->gb);
+ }else{
+ for(;;) {
+ int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
+ if (code < 0){
+ av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
+ return -1;
+ }
+ if (code >= 33) {
+ if (code == 33) {
+ s->mb_x += 33;
+ }
+ /* otherwise, stuffing, nothing to do */
+ } else {
+ s->mb_x += code;
+ break;
}
- /* otherwise, stuffing, nothing to do */
- } else {
- s->mb_x += code;
- break;
}
}
+
if(s->mb_x >= (unsigned)s->mb_width){
av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n");
return -1;
}
+ if (avctx->hwaccel) {
+ const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */
+ int start_code = -1;
+ buf_end = ff_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
+ if (buf_end < *buf + buf_size)
+ buf_end -= 4;
+ s->mb_y = mb_y;
+ if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_end - buf_start) < 0)
+ return DECODE_SLICE_ERROR;
+ *buf = buf_end;
+ return DECODE_SLICE_OK;
+ }
+
s->resync_mb_x= s->mb_x;
s->resync_mb_y= s->mb_y= mb_y;
s->mb_skip_run= 0;
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 == I_TYPE ? "I" : (s->pict_type == P_TYPE ? "P" : (s->pict_type == B_TYPE ? "B" : "S")),
+ s->pict_type == FF_I_TYPE ? "I" : (s->pict_type == FF_P_TYPE ? "P" : (s->pict_type == FF_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
- if(s->avctx->xvmc_acceleration > 1)
- XVMC_init_block(s);//set s->block
-#endif
-
- ret = mpeg_decode_mb(s, s->block);
+ //If 1, we memcpy blocks in xvmcvideo.
+ if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
+ ff_xvmc_init_block(s);//set s->block
- dprintf(s->avctx, "ret=%d\n", ret);
- if (ret < 0)
+ 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
- const int wrap = field_pic ? 2*s->b8_stride : s->b8_stride;
+ 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);
int motion_x, motion_y, dir, i;
- if(field_pic && !s->first_field)
- xy += wrap/2;
for(i=0; i<2; i++){
for(dir=0; dir<2; dir++){
- if (s->mb_intra || (dir==1 && s->pict_type != B_TYPE)) {
+ if (s->mb_intra || (dir==1 && s->pict_type != FF_B_TYPE)) {
motion_x = motion_y = 0;
}else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)){
motion_x = s->mv[dir][0][0];
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][xy ]=
- s->current_picture.ref_index [dir][xy + 1]= s->field_select[dir][i];
+ 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);
}
xy += wrap;
+ b8_xy +=2;
}
}
s->dest[0] += 16 >> lowres;
- s->dest[1] += 16 >> (s->chroma_x_shift + lowres);
- s->dest[2] += 16 >> (s->chroma_x_shift + lowres);
+ s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift;
+ s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift;
MPV_decode_mb(s, s->block);
if (++s->mb_x >= s->mb_width) {
const int mb_size= 16>>s->avctx->lowres;
- ff_draw_horiz_band(s, mb_size*s->mb_y, mb_size);
+ ff_draw_horiz_band(s, mb_size*(s->mb_y>>field_pic), mb_size);
s->mb_x = 0;
- s->mb_y++;
+ s->mb_y += 1<<field_pic;
- if(s->mb_y<<field_pic >= s->mb_height){
- int left= s->gb.size_in_bits - get_bits_count(&s->gb);
- int is_d10= s->chroma_format==2 && s->pict_type==I_TYPE && avctx->profile==0 && avctx->level==5
+ if(s->mb_y >= s->mb_height){
+ int left= get_bits_left(&s->gb);
+ int is_d10= s->chroma_format==2 && s->pict_type==FF_I_TYPE && 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->error_resilience >= FF_ER_AGGRESSIVE && left>8)){
+ || (avctx->error_recognition >= FF_ER_AGGRESSIVE && 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
/* skip mb handling */
if (s->mb_skip_run == -1) {
- /* read again increment */
+ /* read increment again */
s->mb_skip_run = 0;
for(;;) {
int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
break;
}
}
+ if(s->mb_skip_run){
+ int i;
+ if(s->pict_type == FF_I_TYPE){
+ 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++)
+ s->block_last_index[i] = -1;
+ if(s->picture_structure == PICT_FRAME)
+ s->mv_type = MV_TYPE_16X16;
+ else
+ s->mv_type = MV_TYPE_FIELD;
+ if (s->pict_type == FF_P_TYPE) {
+ /* if P type, zero motion vector is implied */
+ s->mv_dir = MV_DIR_FORWARD;
+ s->mv[0][0][0] = s->mv[0][0][1] = 0;
+ s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0;
+ s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0;
+ s->field_select[0][0]= (s->picture_structure - 1) & 1;
+ } else {
+ /* 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];
+ }
+ }
}
}
eos: // end of slice
- *buf += get_bits_count(&s->gb)/8 - 1;
+ *buf += (get_bits_count(&s->gb)-1)/8;
//printf("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= 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;
- s->error_count= 3*(s->end_mb_y - s->start_mb_y)*s->mb_width;
+ s->error_count= (3*(s->end_mb_y - s->start_mb_y)*s->mb_width) >> field_pic;
for(;;){
uint32_t start_code;
}
/**
- * handles slice ends.
- * @return 1 if it seems to be the last slice of
+ * Handle slice ends.
+ * @return 1 if it seems to be the last slice
*/
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
{
if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
return 0;
-#ifdef HAVE_XVMC
- if(s->avctx->xvmc_acceleration)
- XVMC_field_end(s);
-#endif
+ 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");
+ }
+
+ if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+ ff_xvmc_field_end(s);
+
/* end of slice reached */
if (/*s->mb_y<<field_pic == s->mb_height &&*/ !s->first_field) {
/* end of image */
MPV_frame_end(s);
- if (s->pict_type == B_TYPE || s->low_delay) {
+ if (s->pict_type == FF_B_TYPE || s->low_delay) {
*pict= *(AVFrame*)s->current_picture_ptr;
ff_print_debug_info(s, pict);
} else {
s->picture_number++;
- /* latency of 1 frame for I and P frames */
+ /* latency of 1 frame for I- and P-frames */
/* XXX: use another variable than picture_number */
if (s->last_picture_ptr != NULL) {
*pict= *(AVFrame*)s->last_picture_ptr;
width = get_bits(&s->gb, 12);
height = get_bits(&s->gb, 12);
- if (width <= 0 || height <= 0 ||
- (width % 2) != 0 || (height % 2) != 0)
+ if (width <= 0 || height <= 0)
return -1;
s->aspect_ratio_info= get_bits(&s->gb, 4);
- if (s->aspect_ratio_info == 0)
- return -1;
+ if (s->aspect_ratio_info == 0) {
+ av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
+ if (avctx->error_recognition >= FF_ER_COMPLIANT)
+ return -1;
+ }
s->frame_rate_index = get_bits(&s->gb, 4);
if (s->frame_rate_index == 0 || s->frame_rate_index > 13)
return -1;
/* get matrix */
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "intra matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf(s->avctx, "intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(s->avctx, " %d", s->intra_matrix[s->dsp.idct_permutation[i]]);
- dprintf(s->avctx, "\n");
-#endif
+ load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
} else {
for(i=0;i<64;i++) {
j = s->dsp.idct_permutation[i];
}
}
if (get_bits1(&s->gb)) {
- for(i=0;i<64;i++) {
- v = get_bits(&s->gb, 8);
- if(v==0){
- av_log(s->avctx, AV_LOG_ERROR, "inter matrix damaged\n");
- return -1;
- }
- j = s->dsp.idct_permutation[ ff_zigzag_direct[i] ];
- s->inter_matrix[j] = v;
- s->chroma_inter_matrix[j] = v;
- }
-#ifdef DEBUG
- dprintf(s->avctx, "non intra matrix present\n");
- for(i=0;i<64;i++)
- dprintf(s->avctx, " %d", s->inter_matrix[s->dsp.idct_permutation[i]]);
- dprintf(s->avctx, "\n");
-#endif
+ load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
} else {
for(i=0;i<64;i++) {
int j= s->dsp.idct_permutation[i];
return -1;
}
- /* we set mpeg2 parameters so that it emulates mpeg1 */
+ /* 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= CODEC_ID_MPEG1VIDEO;
- avctx->sub_id = 1; /* indicates mpeg1 */
+ avctx->sub_id = 1; /* indicates MPEG-1 */
s->out_format = FMT_MPEG1;
- s->swap_uv = 0;//AFAIK VCR2 don't have SEQ_HEADER
+ s->swap_uv = 0;//AFAIK VCR2 does not have SEQ_HEADER
if(s->flags & CODEC_FLAG_LOW_DELAY) s->low_delay=1;
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
MpegEncContext *s = &s1->mpeg_enc_ctx;
int i, v;
- /* start new mpeg1 context decoding */
+ /* start new MPEG-1 context decoding */
s->out_format = FMT_MPEG1;
if (s1->mpeg_enc_ctx_allocated) {
MPV_common_end(s);
avctx->has_b_frames= 0; //true?
s->low_delay= 1;
- if(avctx->xvmc_acceleration){
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_xvmc_mpg2_420);
- }else{
- avctx->pix_fmt = avctx->get_format(avctx,pixfmt_yuv_420);
- }
+ avctx->pix_fmt = mpeg_get_pixelformat(avctx);
+ avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
- if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT )
+ if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT || avctx->hwaccel ||
+ s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU )
if( avctx->idct_algo == FF_IDCT_AUTO )
avctx->idct_algo = FF_IDCT_SIMPLE;
s->frame_pred_frame_dct = 1;
s->chroma_format = 1;
s->codec_id= s->avctx->codec_id= CODEC_ID_MPEG2VIDEO;
- avctx->sub_id = 2; /* indicates mpeg2 */
+ avctx->sub_id = 2; /* indicates MPEG-2 */
+ s1->save_width = s->width;
+ s1->save_height = s->height;
+ s1->save_progressive_seq = s->progressive_sequence;
return 0;
}
static void mpeg_decode_user_data(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
+ const uint8_t *p, int buf_size)
{
- const uint8_t *p;
- int len, flags;
- p = buf;
- len = buf_size;
+ const uint8_t *buf_end = p+buf_size;
/* we parse the DTG active format information */
- if (len >= 5 &&
+ if (buf_end - p >= 5 &&
p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') {
- flags = p[4];
+ int flags = p[4];
p += 5;
- len -= 5;
if (flags & 0x80) {
/* skip event id */
- if (len < 2)
- return;
p += 2;
- len -= 2;
}
if (flags & 0x40) {
- if (len < 1)
+ if (buf_end - p < 1)
return;
avctx->dtg_active_format = p[0] & 0x0f;
}
time_code_seconds = get_bits(&s->gb,6);
time_code_pictures = get_bits(&s->gb,6);
+ s->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 = get_bits1(&s->gb);
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "GOP (%2d:%02d:%02d.[%02d]) 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, broken_link);
+ time_code_pictures, s->closed_gop, broken_link);
}
/**
- * finds the end of the current frame in the bitstream.
+ * Find the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or -1
*/
-int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
+int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
{
int i;
uint32_t state= pc->state;
- i=0;
- if(!pc->frame_start_found){
- for(i=0; i<buf_size; i++){
+ /* EOF considered as end of frame */
+ if (buf_size == 0)
+ return 0;
+
+/*
+ 0 frame start -> 1/4
+ 1 first_SEQEXT -> 0/2
+ 2 first field start -> 3/0
+ 3 second_SEQEXT -> 2/0
+ 4 searching end
+*/
+
+ for(i=0; i<buf_size; i++){
+ assert(pc->frame_start_found>=0 && pc->frame_start_found<=4);
+ if(pc->frame_start_found&1){
+ if(state == EXT_START_CODE && (buf[i]&0xF0) != 0x80)
+ pc->frame_start_found--;
+ else if(state == EXT_START_CODE+2){
+ if((buf[i]&3) == 3) pc->frame_start_found= 0;
+ else pc->frame_start_found= (pc->frame_start_found+1)&3;
+ }
+ state++;
+ }else{
i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
- if(state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE){
+ if(pc->frame_start_found==0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE){
i++;
- pc->frame_start_found=1;
- break;
+ pc->frame_start_found=4;
}
- }
- }
-
- if(pc->frame_start_found){
- /* EOF considered as end of frame */
- if (buf_size == 0)
- return 0;
- for(; i<buf_size; i++){
- i= ff_find_start_code(buf+i, buf+buf_size, &state) - buf - 1;
- if((state&0xFFFFFF00) == 0x100){
+ if(state == SEQ_END_CODE){
+ pc->state=-1;
+ return i+1;
+ }
+ if(pc->frame_start_found==2 && state == SEQ_START_CODE)
+ pc->frame_start_found= 0;
+ if(pc->frame_start_found<4 && state == EXT_START_CODE)
+ pc->frame_start_found++;
+ if(pc->frame_start_found == 4 && (state&0xFFFFFF00) == 0x100){
if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){
pc->frame_start_found=0;
pc->state=-1;
return i-3;
}
}
+ if(pc->frame_start_found == 0 && s && state == PICTURE_START_CODE){
+ ff_fetch_timestamp(s, i-3, 1);
+ }
}
}
pc->state= state;
return END_NOT_FOUND;
}
+static int decode_chunks(AVCodecContext *avctx,
+ AVFrame *picture, int *data_size,
+ const uint8_t *buf, int buf_size);
+
/* handle buffering and image synchronisation */
static int mpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
Mpeg1Context *s = avctx->priv_data;
- const uint8_t *buf_end;
- const uint8_t *buf_ptr;
- uint32_t start_code;
- int ret, input_size;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
- dprintf(avctx, "fill_buffer\n");
+ av_dlog(avctx, "fill_buffer\n");
- if (buf_size == 0) {
+ if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) {
/* special case for last picture */
if (s2->low_delay==0 && s2->next_picture_ptr) {
*picture= *(AVFrame*)s2->next_picture_ptr;
*data_size = sizeof(AVFrame);
}
- return 0;
+ return buf_size;
}
if(s2->flags&CODEC_FLAG_TRUNCATED){
- int next= ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size);
+ 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 )
return buf_size;
}
- buf_ptr = buf;
- buf_end = buf + buf_size;
-
#if 0
if (s->repeat_field % 2 == 1) {
s->repeat_field++;
}
#endif
- if(s->mpeg_enc_ctx_allocated==0 && avctx->codec_tag == ff_get_fourcc("VCR2"))
+ if(s->mpeg_enc_ctx_allocated==0 && avctx->codec_tag == AV_RL32("VCR2"))
vcr2_init_sequence(avctx);
s->slice_count= 0;
+ if(avctx->extradata && !avctx->frame_number)
+ decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size);
+
+ return decode_chunks(avctx, picture, data_size, buf, buf_size);
+}
+
+static int decode_chunks(AVCodecContext *avctx,
+ AVFrame *picture, int *data_size,
+ const uint8_t *buf, int buf_size)
+{
+ Mpeg1Context *s = avctx->priv_data;
+ MpegEncContext *s2 = &s->mpeg_enc_ctx;
+ const uint8_t *buf_ptr = buf;
+ const uint8_t *buf_end = buf + buf_size;
+ int ret, input_size;
+ int last_code= 0;
+
for(;;) {
- /* find start next code */
- start_code = -1;
+ /* find next start code */
+ uint32_t start_code = -1;
buf_ptr = ff_find_start_code(buf_ptr,buf_end, &start_code);
if (start_code > 0x1ff){
- if(s2->pict_type != B_TYPE || avctx->skip_frame <= AVDISCARD_DEFAULT){
+ if(s2->pict_type != FF_B_TYPE || avctx->skip_frame <= AVDISCARD_DEFAULT){
if(avctx->thread_count > 1){
int i;
- avctx->execute(avctx, slice_decode_thread, (void**)&(s2->thread_context[0]), NULL, s->slice_count);
+ 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->error_count += s2->thread_context[i]->error_count;
}
+
+ if (CONFIG_MPEG_VDPAU_DECODER && avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+ ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count);
+
if (slice_end(avctx, picture)) {
if(s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
*data_size = sizeof(AVPicture);
}
}
+ s2->pict_type= 0;
return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
}
input_size = buf_end - buf_ptr;
if(avctx->debug & FF_DEBUG_STARTCODE){
- av_log(avctx, AV_LOG_DEBUG, "%3X at %zd left %d\n", start_code, buf_ptr-buf, input_size);
+ 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;
+ }else{
+ av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
+ }
break;
case PICTURE_START_CODE:
- /* we have a complete image : we try to decompress it */
- mpeg1_decode_picture(avctx,
- buf_ptr, input_size);
+ if(last_code == 0 || last_code == SLICE_MIN_START_CODE){
+ if(mpeg_decode_postinit(avctx) < 0){
+ av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n");
+ return -1;
+ }
+
+ /* we have a complete image: we try to decompress it */
+ if(mpeg1_decode_picture(avctx,
+ buf_ptr, input_size) < 0)
+ s2->pict_type=0;
+ s2->first_slice = 1;
+ last_code= PICTURE_START_CODE;
+ }else{
+ av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
+ }
break;
case EXT_START_CODE:
- mpeg_decode_extension(avctx,
- buf_ptr, input_size);
+ 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);
+ }else{
+ av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
+ }
+ break;
+ case 0x2:
+ mpeg_decode_sequence_display_extension(s);
+ break;
+ case 0x3:
+ mpeg_decode_quant_matrix_extension(s2);
+ break;
+ case 0x7:
+ mpeg_decode_picture_display_extension(s);
+ break;
+ case 0x8:
+ 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);
+ }
+ break;
+ }
break;
case USER_START_CODE:
mpeg_decode_user_data(avctx,
buf_ptr, input_size);
break;
case GOP_START_CODE:
+ if(last_code == 0){
s2->first_field=0;
mpeg_decode_gop(avctx,
buf_ptr, input_size);
+ s->sync=1;
+ }else{
+ av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
+ }
break;
default:
if (start_code >= SLICE_MIN_START_CODE &&
- start_code <= SLICE_MAX_START_CODE) {
- int mb_y= start_code - SLICE_MIN_START_CODE;
+ start_code <= SLICE_MAX_START_CODE && last_code!=0) {
+ const int field_pic= s2->picture_structure != PICT_FRAME;
+ int mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
+ last_code= SLICE_MIN_START_CODE;
+
+ if(s2->picture_structure == PICT_BOTTOM_FIELD)
+ mb_y++;
+
+ if (mb_y >= s2->mb_height){
+ av_log(s2->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
+ return -1;
+ }
if(s2->last_picture_ptr==NULL){
- /* Skip B-frames if we do not have reference frames. */
- if(s2->pict_type==B_TYPE) break;
- /* Skip P-frames if we do not have reference frame no valid header. */
-// if(s2->pict_type==P_TYPE && s2->first_field && !s2->first_slice) break;
+ /* Skip B-frames if we do not have reference frames and gop is not closed */
+ if(s2->pict_type==FF_B_TYPE){
+ if(!s2->closed_gop)
+ break;
+ }
+ }
+ if(s2->pict_type==FF_I_TYPE)
+ 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. */
+ if(s2->pict_type==FF_P_TYPE && !s->sync) break;
}
/* Skip B-frames if we are in a hurry. */
- if(avctx->hurry_up && s2->pict_type==B_TYPE) break;
- if( (avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type==B_TYPE)
- ||(avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type!=I_TYPE)
+ if(avctx->hurry_up && s2->pict_type==FF_B_TYPE) break;
+ if( (avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type==FF_B_TYPE)
+ ||(avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type!=FF_I_TYPE)
|| avctx->skip_frame >= AVDISCARD_ALL)
break;
/* Skip everything if we are in a hurry>=5. */
break;
}
+ if(!s2->pict_type){
+ av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n");
+ break;
+ }
+
if(s2->first_slice){
s2->first_slice=0;
- if(mpeg_field_start(s2) < 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");
return -1;
}
+ if (avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) {
+ s->slice_count++;
+ break;
+ }
+
if(avctx->thread_count > 1){
int threshold= (s2->mb_height*s->slice_count + avctx->thread_count/2) / avctx->thread_count;
if(threshold <= mb_y){
init_get_bits(&thread_context->gb, buf_ptr, input_size*8);
s->slice_count++;
}
- buf_ptr += 2; //FIXME add minimum num of bytes per slice
+ buf_ptr += 2; //FIXME add minimum number of bytes per slice
}else{
ret = mpeg_decode_slice(s, mb_y, &buf_ptr, input_size);
emms_c();
}
}
+static void flush(AVCodecContext *avctx){
+ Mpeg1Context *s = avctx->priv_data;
+
+ s->sync=0;
+
+ ff_mpeg_flush(avctx);
+}
+
static int mpeg_decode_end(AVCodecContext *avctx)
{
Mpeg1Context *s = avctx->priv_data;
return 0;
}
-AVCodec mpeg1video_decoder = {
+AVCodec ff_mpeg1video_decoder = {
"mpeg1video",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG1VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_end,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+ .flush= flush,
+ .max_lowres= 3,
+ .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
};
-AVCodec mpeg2video_decoder = {
+AVCodec ff_mpeg2video_decoder = {
"mpeg2video",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_end,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+ .flush= flush,
+ .max_lowres= 3,
+ .long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"),
};
//legacy decoder
-AVCodec mpegvideo_decoder = {
+AVCodec ff_mpegvideo_decoder = {
"mpegvideo",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO,
sizeof(Mpeg1Context),
mpeg_decode_init,
mpeg_decode_end,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+ .flush= flush,
+ .max_lowres= 3,
+ .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
};
-#ifdef HAVE_XVMC
-static int mpeg_mc_decode_init(AVCodecContext *avctx){
- Mpeg1Context *s;
-
+#if CONFIG_MPEG_XVMC_DECODER
+static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx){
if( avctx->thread_count > 1)
return -1;
if( !(avctx->slice_flags & SLICE_FLAG_CODED_ORDER) )
return -1;
if( !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD) ){
- dprintf(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
+ av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
}
mpeg_decode_init(avctx);
- s = avctx->priv_data;
avctx->pix_fmt = PIX_FMT_XVMC_MPEG2_IDCT;
avctx->xvmc_acceleration = 2;//2 - the blocks are packed!
return 0;
}
-AVCodec mpeg_xvmc_decoder = {
+AVCodec ff_mpeg_xvmc_decoder = {
"mpegvideo_xvmc",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_MPEG2VIDEO_XVMC,
sizeof(Mpeg1Context),
mpeg_mc_decode_init,
mpeg_decode_end,
mpeg_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
- .flush= ff_mpeg_flush,
+ .flush= flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video XvMC (X-Video Motion Compensation)"),
};
#endif
-/* 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"
+#if CONFIG_MPEG_VDPAU_DECODER
+AVCodec ff_mpeg_vdpau_decoder = {
+ "mpegvideo_vdpau",
+ AVMEDIA_TYPE_VIDEO,
+ CODEC_ID_MPEG2VIDEO,
+ sizeof(Mpeg1Context),
+ mpeg_decode_init,
+ NULL,
+ mpeg_decode_end,
+ mpeg_decode_frame,
+ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush= flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"),
+};
+#endif
+
+#if CONFIG_MPEG1_VDPAU_DECODER
+AVCodec ff_mpeg1_vdpau_decoder = {
+ "mpeg1video_vdpau",
+ AVMEDIA_TYPE_VIDEO,
+ CODEC_ID_MPEG1VIDEO,
+ sizeof(Mpeg1Context),
+ mpeg_decode_init,
+ NULL,
+ mpeg_decode_end,
+ mpeg_decode_frame,
+ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush= flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"),
+};
+#endif
+