/*
* H.263 decoder
* Copyright (c) 2001 Fabrice Bellard.
+ * 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
*
* 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 h263dec.c
* H.263 decoder.
*/
-
+
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
s->avctx = avctx;
s->out_format = FMT_H263;
- s->width = avctx->width;
- s->height = avctx->height;
+ s->width = avctx->coded_width;
+ s->height = avctx->coded_height;
s->workaround_bugs= avctx->workaround_bugs;
// set defaults
+ MPV_decode_defaults(s);
s->quant_precision=5;
- s->progressive_sequence=1;
s->decode_mb= ff_h263_decode_mb;
s->low_delay= 1;
avctx->pix_fmt= PIX_FMT_YUV420P;
/* select sub codec */
switch(avctx->codec->id) {
case CODEC_ID_H263:
- s->gob_number = 0;
s->unrestricted_mv= 0;
break;
case CODEC_ID_MPEG4:
s->h263_pred = 1;
s->msmpeg4_version=5;
break;
+ case CODEC_ID_WMV3:
+ s->h263_msmpeg4 = 1;
+ s->h263_pred = 1;
+ s->msmpeg4_version=6;
+ break;
case CODEC_ID_H263I:
- s->h263_intel = 1;
break;
case CODEC_ID_FLV1:
s->h263_flv = 1;
ff_msmpeg4_decode_init(s);
else
h263_decode_init_vlc(s);
-
+
return 0;
}
}
/**
- * retunrs the number of bytes consumed for building the current frame
+ * returns the number of bytes consumed for building the current frame
*/
static int get_consumed_bytes(MpegEncContext *s, int buf_size){
int pos= (get_bits_count(&s->gb)+7)>>3;
-
+
if(s->divx_packed){
//we would have to scan through the whole buf to handle the weird reordering ...
- return buf_size;
+ return buf_size;
}else if(s->flags&CODEC_FLAG_TRUNCATED){
pos -= s->parse_context.last_index;
if(pos<0) pos=0; // padding is not really read so this might be -1
static int decode_slice(MpegEncContext *s){
const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
+ const int mb_size= 16>>s->avctx->lowres;
s->last_resync_gb= s->gb;
s->first_slice_line= 1;
-
+
s->resync_mb_x= s->mb_x;
s->resync_mb_y= s->mb_y;
- s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
- s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
-
+ ff_set_qscale(s, s->qscale);
+
if(s->partitioned_frame){
const int qscale= s->qscale;
if(s->codec_id==CODEC_ID_MPEG4){
if(ff_mpeg4_decode_partitions(s) < 0)
- return -1;
+ return -1;
}
-
+
/* restore variables which were modified */
s->first_slice_line=1;
s->mb_x= s->resync_mb_x;
s->mb_y= s->resync_mb_y;
- s->chroma_qscale= s->qscale= qscale;
- s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
- s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
+ ff_set_qscale(s, qscale);
}
for(; s->mb_y < s->mb_height; s->mb_y++) {
return 0;
}
}
-
+
if(s->msmpeg4_version==1){
s->last_dc[0]=
s->last_dc[1]=
s->last_dc[2]= 128;
}
-
+
ff_init_block_index(s);
for(; s->mb_x < s->mb_width; s->mb_x++) {
int ret;
ff_update_block_index(s);
if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){
- s->first_slice_line=0;
+ s->first_slice_line=0;
}
/* DCT & quantize */
- s->dsp.clear_blocks(s->block[0]);
-
+
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
-// s->mb_skiped = 0;
+// s->mb_skipped = 0;
//printf("%d %d %06X\n", ret, get_bits_count(&s->gb), show_bits(&s->gb, 24));
ret= s->decode_mb(s, s->block);
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
s->padding_bug_score--;
-
+
if(++s->mb_x >= s->mb_width){
s->mb_x=0;
- ff_draw_horiz_band(s, s->mb_y*16, 16);
+ ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
s->mb_y++;
}
- return 0;
+ return 0;
}else if(ret==SLICE_NOEND){
av_log(s->avctx, AV_LOG_ERROR, "Slice mismatch at MB: %d\n", xy);
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)&part_mask);
}
av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
-
+
return -1;
}
if(s->loop_filter)
ff_h263_loop_filter(s);
}
-
- ff_draw_horiz_band(s, s->mb_y*16, 16);
-
+
+ ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
+
s->mb_x= 0;
}
-
+
assert(s->mb_x==0 && s->mb_y==s->mb_height);
/* try to detect the padding bug */
if( s->codec_id==CODEC_ID_MPEG4
- && (s->workaround_bugs&FF_BUG_AUTODETECT)
+ && (s->workaround_bugs&FF_BUG_AUTODETECT)
&& s->gb.size_in_bits - get_bits_count(&s->gb) >=0
&& s->gb.size_in_bits - get_bits_count(&s->gb) < 48
// && !s->resync_marker
&& !s->data_partitioning){
-
+
const int bits_count= get_bits_count(&s->gb);
const int bits_left = s->gb.size_in_bits - bits_count;
-
+
if(bits_left==0){
s->padding_bug_score+=16;
- }else if(bits_left>8){
- s->padding_bug_score++;
} else if(bits_left != 1){
int v= show_bits(&s->gb, 8);
v|= 0x7F >> (7-(bits_count&7));
- if(v==0x7F)
+ if(v==0x7F && bits_left<=8)
s->padding_bug_score--;
+ else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16)
+ s->padding_bug_score+= 4;
else
- s->padding_bug_score++;
- }
+ s->padding_bug_score++;
+ }
}
- // handle formats which dont have unique end markers
+ if(s->workaround_bugs&FF_BUG_AUTODETECT){
+ if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version || !s->resync_marker)*/)
+ s->workaround_bugs |= FF_BUG_NO_PADDING;
+ else
+ s->workaround_bugs &= ~FF_BUG_NO_PADDING;
+ }
+
+ // handle formats which don't have unique end markers
if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly
int left= s->gb.size_in_bits - get_bits_count(&s->gb);
int max_extra=7;
-
+
/* no markers in M$ crap */
if(s->msmpeg4_version && s->pict_type==I_TYPE)
max_extra+= 17;
-
+
/* buggy padding but the frame should still end approximately at the bitstream end */
if((s->workaround_bugs&FF_BUG_NO_PADDING) && s->error_resilience>=3)
max_extra+= 48;
else if((s->workaround_bugs&FF_BUG_NO_PADDING))
max_extra+= 256*256*256*64;
-
+
if(left>max_extra){
av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
}
av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
}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);
-
+
return 0;
}
- av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
+ av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
s->gb.size_in_bits - get_bits_count(&s->gb),
show_bits(&s->gb, 24), s->padding_bug_score);
-
+
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
return -1;
* finds the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or -1
*/
-static int mpeg4_find_frame_end(MpegEncContext *s, uint8_t *buf, int buf_size){
- ParseContext *pc= &s->parse_context;
+int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
int vop_found, i;
uint32_t state;
-
+
vop_found= pc->frame_start_found;
state= pc->state;
-
+
i=0;
if(!vop_found){
for(i=0; i<buf_size; i++){
}
}
- if(vop_found){
- for(; i<buf_size; i++){
- state= (state<<8) | buf[i];
- if((state&0xFFFFFF00) == 0x100){
- pc->frame_start_found=0;
- pc->state=-1;
- return i-3;
+ if(vop_found){
+ /* EOF considered as end of frame */
+ if (buf_size == 0)
+ return 0;
+ for(; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if((state&0xFFFFFF00) == 0x100){
+ pc->frame_start_found=0;
+ pc->state=-1;
+ return i-3;
+ }
}
- }
}
pc->frame_start_found= vop_found;
pc->state= state;
return END_NOT_FOUND;
}
-static int h263_find_frame_end(MpegEncContext *s, uint8_t *buf, int buf_size){
- ParseContext *pc= &s->parse_context;
+static int h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
int vop_found, i;
uint32_t state;
-
+
vop_found= pc->frame_start_found;
state= pc->state;
-
+
i=0;
if(!vop_found){
for(i=0; i<buf_size; i++){
}
}
- if(vop_found){
+ if(vop_found){
for(; i<buf_size; i++){
state= (state<<8) | buf[i];
if(state>>(32-22) == 0x20){
pc->frame_start_found=0;
- pc->state=-1;
+ pc->state=-1;
return i-3;
}
}
}
pc->frame_start_found= vop_found;
pc->state= state;
-
+
return END_NOT_FOUND;
}
-int ff_h263_decode_frame(AVCodecContext *avctx,
+static int h263_parse(AVCodecParserContext *s,
+ AVCodecContext *avctx,
+ uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size)
+{
+ ParseContext *pc = s->priv_data;
+ int next;
+
+ next= h263_find_frame_end(pc, buf, buf_size);
+
+ if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
+ *poutbuf = NULL;
+ *poutbuf_size = 0;
+ return buf_size;
+ }
+
+ *poutbuf = (uint8_t *)buf;
+ *poutbuf_size = buf_size;
+ return next;
+}
+
+int ff_h263_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
MpegEncContext *s = avctx->priv_data;
int ret;
- AVFrame *pict = data;
-
+ AVFrame *pict = data;
+
#ifdef PRINT_FRAME_TIME
uint64_t time= rdtsc();
#endif
printf("bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
#endif
s->flags= avctx->flags;
-
- *data_size = 0;
+ s->flags2= avctx->flags2;
/* no supplementary picture */
if (buf_size == 0) {
if(s->flags&CODEC_FLAG_TRUNCATED){
int next;
-
+
if(s->codec_id==CODEC_ID_MPEG4){
- next= mpeg4_find_frame_end(s, buf, buf_size);
+ next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
}else if(s->codec_id==CODEC_ID_H263){
- next= h263_find_frame_end(s, buf, buf_size);
+ next= h263_find_frame_end(&s->parse_context, buf, buf_size);
}else{
- av_log(s->avctx, AV_LOG_ERROR, "this codec doesnt support truncated bitstreams\n");
+ av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n");
return -1;
}
-
- if( ff_combine_frame(s, next, &buf, &buf_size) < 0 )
+
+ if( ff_combine_frame(&s->parse_context, next, &buf, &buf_size) < 0 )
return buf_size;
}
+
retry:
-
- if(s->bitstream_buffer_size && buf_size<20){ //divx 5.01+ frame reorder
+
+ if(s->bitstream_buffer_size && (s->divx_packed || buf_size<20)){ //divx 5.01+/xvid frame reorder
init_get_bits(&s->gb, s->bitstream_buffer, s->bitstream_buffer_size*8);
}else
init_get_bits(&s->gb, buf, buf_size*8);
if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
return -1;
}
-
+
//we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
int i= ff_find_unused_picture(s, 0);
s->current_picture_ptr= &s->picture[i];
}
-
+
/* let's go :-) */
if (s->msmpeg4_version==5) {
ret= ff_wmv2_decode_picture_header(s);
} else if (s->h263_pred) {
if(s->avctx->extradata_size && s->picture_number==0){
GetBitContext gb;
-
+
init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
ret = ff_mpeg4_decode_picture_header(s, &gb);
}
if(s->flags& CODEC_FLAG_LOW_DELAY)
s->low_delay=1;
- } else if (s->h263_intel) {
+ } else if (s->codec_id == CODEC_ID_H263I) {
ret = intel_h263_decode_picture_header(s);
} else if (s->h263_flv) {
ret = flv_h263_decode_picture_header(s);
} else {
ret = h263_decode_picture_header(s);
}
-
- if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_size);
+
+ if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
/* skip if the header was thrashed */
if (ret < 0){
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
return -1;
}
-
+
avctx->has_b_frames= !s->low_delay;
-
+
if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
- if(s->avctx->stream_codec_tag == ff_get_fourcc("XVID") ||
+ if(s->avctx->stream_codec_tag == ff_get_fourcc("XVID") ||
s->avctx->codec_tag == ff_get_fourcc("XVID") || s->avctx->codec_tag == ff_get_fourcc("XVIX"))
s->xvid_build= -1;
#if 0
if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==1
- && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
+ && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
s->xvid_build= -1;
#endif
}
s->divx_version= 400; //divx 4
}
- if(s->workaround_bugs&FF_BUG_AUTODETECT){
- s->workaround_bugs &= ~FF_BUG_NO_PADDING;
-
- if(s->padding_bug_score > -2 && !s->data_partitioning && (s->divx_version || !s->resync_marker))
- s->workaround_bugs |= FF_BUG_NO_PADDING;
+ if(s->xvid_build && s->divx_version){
+ s->divx_version=
+ s->divx_build= 0;
+ }
- if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
+ if(s->workaround_bugs&FF_BUG_AUTODETECT){
+ if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
s->workaround_bugs|= FF_BUG_XVID_ILACE;
if(s->avctx->codec_tag == ff_get_fourcc("UMP4")){
if(s->xvid_build && s->xvid_build<=3)
s->padding_bug_score= 256*256*256*64;
-
+
if(s->xvid_build && s->xvid_build<=1)
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
if(s->xvid_build && s->xvid_build<=12)
s->workaround_bugs|= FF_BUG_EDGE;
+ if(s->xvid_build && s->xvid_build<=32)
+ s->workaround_bugs|= FF_BUG_DC_CLIP;
+
#define SET_QPEL_FUNC(postfix1, postfix2) \
s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
if(s->lavc_build && s->lavc_build<4653)
s->workaround_bugs|= FF_BUG_STD_QPEL;
-
+
if(s->lavc_build && s->lavc_build<4655)
s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
s->workaround_bugs|= FF_BUG_EDGE;
}
+ if(s->lavc_build && s->lavc_build<=4712)
+ s->workaround_bugs|= FF_BUG_DC_CLIP;
+
if(s->divx_version)
s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
//printf("padding_bug_score: %d\n", s->padding_bug_score);
if(s->divx_version && s->divx_version<500){
s->workaround_bugs|= FF_BUG_EDGE;
}
-
+
+ if(s->divx_version)
+ s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
#if 0
if(s->divx_version==500)
s->padding_bug_score= 256*256*256*64;
if( s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==0
&& s->codec_id==CODEC_ID_MPEG4 && s->vo_type==0)
s->workaround_bugs|= FF_BUG_NO_PADDING;
-
+
if(s->lavc_build && s->lavc_build<4609) //FIXME not sure about the version num but a 4609 file seems ok
s->workaround_bugs|= FF_BUG_NO_PADDING;
#endif
}
-
+
if(s->workaround_bugs& FF_BUG_STD_QPEL){
SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c)
SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c)
}
if(avctx->debug & FF_DEBUG_BUGS)
- av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n",
s->workaround_bugs, s->lavc_build, s->xvid_build, s->divx_version, s->divx_build,
s->divx_packed ? "p" : "");
-
+
#if 0 // dump bits per frame / qp / complexity
{
static FILE *f=NULL;
fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size*(double)s->qscale);
}
#endif
-
+
+#if defined(HAVE_MMX) && defined(CONFIG_GPL)
+ if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & MM_MMX)){
+ avctx->idct_algo= FF_IDCT_XVIDMMX;
+ avctx->coded_width= 0; // force reinit
+// dsputil_init(&s->dsp, avctx);
+ s->picture_number=0;
+ }
+#endif
+
/* After H263 & mpeg4 header decode we have the height, width,*/
/* and other parameters. So then we could init the picture */
/* FIXME: By the way H263 decoder is evolving it should have */
/* an H263EncContext */
-
- if ( s->width != avctx->width || s->height != avctx->height) {
+
+ if ( s->width != avctx->coded_width
+ || s->height != avctx->coded_height) {
/* H.263 could change picture size any time */
ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat
s->parse_context.buffer=0;
s->parse_context= pc;
}
if (!s->context_initialized) {
- avctx->width = s->width;
- avctx->height = s->height;
+ avcodec_set_dimensions(avctx, s->width, s->height);
goto retry;
}
if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P))
s->gob_index = ff_h263_get_gob_height(s);
-
+
// for hurry_up==5
s->current_picture.pict_type= s->pict_type;
s->current_picture.key_frame= s->pict_type == I_TYPE;
- /* skip b frames if we dont have reference frames */
- if(s->last_picture_ptr==NULL && s->pict_type==B_TYPE) return get_consumed_bytes(s, buf_size);
+ /* skip B-frames if we don't have reference frames */
+ if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size);
/* skip b frames if we are in a hurry */
if(avctx->hurry_up && s->pict_type==B_TYPE) return get_consumed_bytes(s, buf_size);
+ if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
+ || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
+ || avctx->skip_frame >= AVDISCARD_ALL)
+ return get_consumed_bytes(s, buf_size);
/* skip everything if we are in a hurry>=5 */
if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
-
+
if(s->next_p_frame_damaged){
if(s->pict_type==B_TYPE)
return get_consumed_bytes(s, buf_size);
#endif
ff_er_frame_start(s);
-
+
//the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type
//which isnt available before MPV_frame_start()
if (s->msmpeg4_version==5){
}
/* decode each macroblock */
- s->mb_x=0;
+ s->mb_x=0;
s->mb_y=0;
-
+
decode_slice(s);
while(s->mb_y<s->mb_height){
if(s->msmpeg4_version){
if(ff_h263_resync(s)<0)
break;
}
-
+
if(s->msmpeg4_version<4 && s->h263_pred)
ff_mpeg4_clean_buffers(s);
if(msmpeg4_decode_ext_header(s, buf_size) < 0){
s->error_status_table[s->mb_num-1]= AC_ERROR|DC_ERROR|MV_ERROR;
}
-
+
/* divx 5.01+ bistream reorder stuff */
if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_packed){
int current_pos= get_bits_count(&s->gb)>>3;
+ int startcode_found=0;
- if( buf_size - current_pos > 5
- && buf_size - current_pos < BITSTREAM_BUFFER_SIZE){
+ if(buf_size - current_pos > 5){
int i;
- int startcode_found=0;
for(i=current_pos; i<buf_size-3; i++){
if(buf[i]==0 && buf[i+1]==0 && buf[i+2]==1 && buf[i+3]==0xB6){
startcode_found=1;
break;
}
}
- if(startcode_found){
- memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
- s->bitstream_buffer_size= buf_size - current_pos;
- }
+ }
+ if(s->gb.buffer == s->bitstream_buffer && buf_size>20){ //xvid style
+ startcode_found=1;
+ current_pos=0;
+ }
+
+ if(startcode_found){
+ s->bitstream_buffer= av_fast_realloc(
+ s->bitstream_buffer,
+ &s->allocated_bitstream_buffer_size,
+ buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE);
+ memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
+ s->bitstream_buffer_size= buf_size - current_pos;
}
}
assert(s->current_picture.pict_type == s->pict_type);
if(s->pict_type==B_TYPE || s->low_delay){
*pict= *(AVFrame*)&s->current_picture;
- ff_print_debug_info(s, s->current_picture_ptr);
+ ff_print_debug_info(s, pict);
} else {
*pict= *(AVFrame*)&s->last_picture;
- ff_print_debug_info(s, s->last_picture_ptr);
+ if(pict)
+ ff_print_debug_info(s, pict);
}
/* Return the Picture timestamp as the frame number */
/* we substract 1 because it is added on utils.c */
avctx->frame_number = s->picture_number - 1;
- /* dont output the last pic after seeking */
+ /* don't output the last pic after seeking */
if(s->last_picture_ptr || s->low_delay)
*data_size = sizeof(AVFrame);
#ifdef PRINT_FRAME_TIME
return get_consumed_bytes(s, buf_size);
}
-static const AVOption mpeg4_decoptions[] =
-{
- AVOPTION_SUB(avoptions_workaround_bug),
- AVOPTION_END()
-};
-
AVCodec mpeg4_decoder = {
"mpeg4",
CODEC_TYPE_VIDEO,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
- .options = mpeg4_decoptions,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
};
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
};
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- mpeg4_decoptions,
};
AVCodec msmpeg4v2_decoder = {
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- mpeg4_decoptions,
};
AVCodec msmpeg4v3_decoder = {
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- .options = mpeg4_decoptions,
};
AVCodec wmv1_decoder = {
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- mpeg4_decoptions,
};
AVCodec h263i_decoder = {
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- mpeg4_decoptions,
};
AVCodec flv_decoder = {
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1
};
+
+AVCodecParser h263_parser = {
+ { CODEC_ID_H263 },
+ sizeof(ParseContext),
+ NULL,
+ h263_parse,
+ ff_parse_close,
+};
projects / ffmpeg / blobdiff