/*
* 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"
//#define DEBUG
//#define PRINT_FRAME_TIME
-#ifdef PRINT_FRAME_TIME
-static inline long long rdtsc()
-{
- long long l;
- asm volatile( "rdtsc\n\t"
- : "=A" (l)
- );
-// printf("%d\n", int(l/1000));
- return l;
-}
-#endif
int ff_h263_decode_init(AVCodecContext *avctx)
{
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;
+ s->unrestricted_mv= 1;
/* 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->decode_mb= ff_mpeg4_decode_mb;
s->time_increment_bits = 4; /* default value for broken headers */
s->h263_pred = 1;
s->low_delay = 0; //default, might be overriden in the vol header during header parsing
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;
break;
default:
return -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_version>=500){
+
+ 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 where modified */
+
+ /* 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->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++) {
/* per-row end of slice checks */
if(s->msmpeg4_version){
if(s->resync_mb_y + s->slice_height == s->mb_y){
- const int xy= s->mb_x + s->mb_y*s->mb_width;
- s->error_status_table[xy-1]|= AC_END|DC_END|MV_END;
+ 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;
}
}
-
+
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);
-
- MPV_decode_mb(s, s->block);
+
+ if (s->pict_type!=B_TYPE)
+ ff_h263_update_motion_val(s);
if(ret<0){
- const int xy= s->mb_x + s->mb_y*s->mb_width;
+ const int xy= s->mb_x + s->mb_y*s->mb_stride;
if(ret==SLICE_END){
+ MPV_decode_mb(s, s->block);
+ if(s->loop_filter)
+ ff_h263_loop_filter(s);
+
//printf("%d %d %d %06X\n", s->mb_x, s->mb_y, s->gb.size*8 - get_bits_count(&s->gb), show_bits(&s->gb, 24));
- s->error_status_table[xy]|= AC_END;
- if(!s->partitioned_frame)
- s->error_status_table[xy]|= MV_END|DC_END;
+ 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){
- fprintf(stderr,"Slice mismatch at MB: %d\n", xy);
+ 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);
return -1;
}
- fprintf(stderr,"Error at MB: %d\n", xy);
- s->error_status_table[xy]|= AC_ERROR;
- if(!s->partitioned_frame)
- s->error_status_table[xy]|= DC_ERROR|MV_ERROR;
-
+ 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;
}
+
+ MPV_decode_mb(s, s->block);
+ 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){
- fprintf(stderr, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
+ av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
}
else if(left<0){
- fprintf(stderr, "overreading %d bits\n", -left);
+ av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
}else
- s->error_status_table[s->mb_num-1]|= AC_END|MV_END|DC_END;
-
+ 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;
}
- fprintf(stderr, "slice end not reached but screenspace end (%d left %06X)\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));
+ 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++){
}
}
}
-
- 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 -1;
+ return END_NOT_FOUND;
}
-/**
- * draws an line from (ex, ey) -> (sx, sy).
- * @param w width of the image
- * @param h height of the image
- * @param stride stride/linesize of the image
- * @param color color of the arrow
- */
-static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
- int t, x, y, f;
-
- ex= clip(ex, 0, w-1);
- ey= clip(ey, 0, h-1);
-
- buf[sy*stride + sx]+= color;
-
- if(ABS(ex - sx) > ABS(ey - sy)){
- if(sx > ex){
- t=sx; sx=ex; ex=t;
- t=sy; sy=ey; ey=t;
- }
- buf+= sx + sy*stride;
- ex-= sx;
- f= ((ey-sy)<<16)/ex;
- for(x= 0; x <= ex; x++){
- y= ((x*f) + (1<<15))>>16;
- buf[y*stride + x]+= color;
- }
- }else{
- if(sy > ey){
- t=sx; sx=ex; ex=t;
- t=sy; sy=ey; ey=t;
+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++){
+ state= (state<<8) | buf[i];
+ if(state>>(32-22) == 0x20){
+ i++;
+ vop_found=1;
+ break;
+ }
}
- buf+= sx + sy*stride;
- ey-= sy;
- if(ey) f= ((ex-sx)<<16)/ey;
- else f= 0;
- for(y= 0; y <= ey; y++){
- x= ((y*f) + (1<<15))>>16;
- buf[y*stride + x]+= color;
+ }
+
+ 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;
+ return i-3;
}
+ }
}
+ pc->frame_start_found= vop_found;
+ pc->state= state;
+
+ return END_NOT_FOUND;
}
-/**
- * draws an arrow from (ex, ey) -> (sx, sy).
- * @param w width of the image
- * @param h height of the image
- * @param stride stride/linesize of the image
- * @param color color of the arrow
- */
-static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
- int dx= ex - sx;
- int dy= ey - sy;
-
- if(dx*dx + dy*dy > 3*3){
- int rx= dx + dy;
- int ry= -dx + dy;
- int length= ff_sqrt((rx*rx + ry*ry)<<8);
-
- //FIXME subpixel accuracy
- rx= ROUNDED_DIV(rx*3<<4, length);
- ry= ROUNDED_DIV(ry*3<<4, length);
-
- draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
- draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
+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;
}
- draw_line(buf, sx, sy, ex, ey, w, h, stride, color);
+
+ *poutbuf = (uint8_t *)buf;
+ *poutbuf_size = buf_size;
+ return next;
}
-int ff_h263_decode_frame(AVCodecContext *avctx,
+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,i;
- AVFrame *pict = data;
- float new_aspect;
-
+ int ret;
+ 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;
+ s->flags2= avctx->flags2;
- *data_size = 0;
-
- /* no supplementary picture */
+ /* no supplementary picture */
if (buf_size == 0) {
+ /* special case for last picture */
+ if (s->low_delay==0 && s->next_picture_ptr) {
+ *pict= *(AVFrame*)s->next_picture_ptr;
+ s->next_picture_ptr= NULL;
+
+ *data_size = sizeof(AVFrame);
+ }
+
return 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->parse_context, buf, buf_size);
}else{
- fprintf(stderr, "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);
}
- avctx->has_b_frames= !s->low_delay;
- if(s->workaround_bugs&FF_BUG_AUTODETECT){
- if(s->padding_bug_score > -2 && !s->data_partitioning)
- s->workaround_bugs |= FF_BUG_NO_PADDING;
- else
- s->workaround_bugs &= ~FF_BUG_NO_PADDING;
+ if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
- if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
- s->workaround_bugs|= FF_BUG_XVID_ILACE;
+ /* 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") ||
+ 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("MP4S"))
- s->workaround_bugs|= FF_BUG_AC_VLC;
-
- if(s->avctx->codec_tag == ff_get_fourcc("M4S2"))
- s->workaround_bugs|= FF_BUG_AC_VLC;
+ 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->xvid_build= -1;
#endif
+ }
+
+ if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
+ if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
+ s->divx_version= 400; //divx 4
+ }
+
+ if(s->xvid_build && s->divx_version){
+ s->divx_version=
+ s->divx_build= 0;
+ }
+
+ 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")){
s->workaround_bugs|= FF_BUG_UMP4;
- s->workaround_bugs|= FF_BUG_AC_VLC;
}
- if(s->divx_version){
+ if(s->divx_version>=500){
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
}
s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
}
- if(s->avctx->codec_tag == ff_get_fourcc("XVID") && s->xvid_build==0)
- s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
-
- if(s->avctx->codec_tag == ff_get_fourcc("XVID") && s->xvid_build==0)
- s->padding_bug_score= 256*256*256*64;
-
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;
+ if(s->lavc_build && s->lavc_build<4670){
+ 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==501 && s->divx_build==20020416)
s->padding_bug_score= 256*256*256*64;
+
+ 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)
SET_QPEL_FUNC(qpel_pixels_tab[1][15], qpel8_mc33_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",
+ 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->aspected_height)
- new_aspect= s->aspected_width*s->width / (float)(s->height*s->aspected_height);
- else
- new_aspect=0;
-
- if ( s->width != avctx->width || s->height != avctx->height
- || ABS(new_aspect - avctx->aspect_ratio) > 0.001) {
+
+ 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;
MPV_common_end(s);
- s->context_initialized=0;
+ s->parse_context= pc;
}
if (!s->context_initialized) {
- avctx->width = s->width;
- avctx->height = s->height;
- avctx->aspect_ratio= new_aspect;
+ 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);
- if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_size);
- /* skip if the header was thrashed */
- if (ret < 0){
- fprintf(stderr, "header damaged\n");
- return -1;
- }
-
// 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.data[0]==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);
printf("qscale=%d\n", s->qscale);
#endif
- if(s->error_resilience)
- memset(s->error_status_table, MV_ERROR|AC_ERROR|DC_ERROR|VP_START|AC_END|DC_END|MV_END, s->mb_num*sizeof(uint8_t));
-
+ 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){
+ if(ff_wmv2_decode_secondary_picture_header(s) < 0)
+ return -1;
+ }
+
/* decode each macroblock */
- s->block_wrap[0]=
- s->block_wrap[1]=
- s->block_wrap[2]=
- s->block_wrap[3]= s->mb_width*2 + 2;
- s->block_wrap[4]=
- s->block_wrap[5]= s->mb_width + 2;
- s->mb_x=0;
+ s->mb_x=0;
s->mb_y=0;
-
+
decode_slice(s);
- s->error_status_table[0]|= VP_START;
- while(s->mb_y<s->mb_height && s->gb.size_in_bits - get_bits_count(&s->gb)>16){
+ while(s->mb_y<s->mb_height){
if(s->msmpeg4_version){
- if(s->mb_x!=0 || (s->mb_y%s->slice_height)!=0)
+ if(s->mb_x!=0 || (s->mb_y%s->slice_height)!=0 || get_bits_count(&s->gb) > s->gb.size_in_bits)
break;
}else{
if(ff_h263_resync(s)<0)
break;
}
-
+
if(s->msmpeg4_version<4 && s->h263_pred)
ff_mpeg4_clean_buffers(s);
decode_slice(s);
-
- s->error_status_table[s->resync_mb_x + s->resync_mb_y*s->mb_width]|= VP_START;
}
if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type==I_TYPE)
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_version>=500){
+ 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->error_resilience){
- int error=0, num_end_markers=0;
- for(i=0; i<s->mb_num; i++){
- int status= s->error_status_table[i];
-#if 0
- if(i%s->mb_width == 0) printf("\n");
- printf("%2X ", status);
-#endif
- if(status==0) continue;
-
- if(status&(DC_ERROR|AC_ERROR|MV_ERROR))
- error=1;
- if(status&VP_START){
- if(num_end_markers)
- error=1;
- num_end_markers=3;
- }
- if(status&AC_END)
- num_end_markers--;
- if(status&DC_END)
- num_end_markers--;
- if(status&MV_END)
- num_end_markers--;
+ if(s->gb.buffer == s->bitstream_buffer && buf_size>20){ //xvid style
+ startcode_found=1;
+ current_pos=0;
}
- if(num_end_markers || error){
- fprintf(stderr, "concealing errors\n");
- ff_error_resilience(s);
- }
- }
- MPV_frame_end(s);
-
- if((avctx->debug&FF_DEBUG_VIS_MV) && s->last_picture.data[0]){
- const int shift= 1 + s->quarter_sample;
- int mb_y;
- uint8_t *ptr= s->last_picture.data[0];
- s->low_delay=0; //needed to see the vectors without trashing the buffers
-
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- int mb_x;
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- const int mb_index= mb_x + mb_y*s->mb_width;
- if(s->co_located_type_table[mb_index] == MV_TYPE_8X8){
- int i;
- for(i=0; i<4; i++){
- int sx= mb_x*16 + 4 + 8*(i&1);
- int sy= mb_y*16 + 4 + 8*(i>>1);
- int xy= 1 + mb_x*2 + (i&1) + (mb_y*2 + 1 + (i>>1))*(s->mb_width*2 + 2);
- int mx= (s->motion_val[xy][0]>>shift) + sx;
- int my= (s->motion_val[xy][1]>>shift) + sy;
- draw_arrow(ptr, sx, sy, mx, my, s->width, s->height, s->linesize, 100);
- }
- }else{
- int sx= mb_x*16 + 8;
- int sy= mb_y*16 + 8;
- int xy= 1 + mb_x*2 + (mb_y*2 + 1)*(s->mb_width*2 + 2);
- int mx= (s->motion_val[xy][0]>>shift) + sx;
- int my= (s->motion_val[xy][1]>>shift) + sy;
- draw_arrow(ptr, sx, sy, mx, my, s->width, s->height, s->linesize, 100);
- }
- s->mbskip_table[mb_index]=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;
}
}
+ ff_er_frame_end(s);
+
+ MPV_frame_end(s);
+assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
+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, pict);
} else {
*pict= *(AVFrame*)&s->last_picture;
- }
-
- if(avctx->debug&FF_DEBUG_QP){
- int8_t *qtab= pict->qscale_table;
- int x,y;
-
- for(y=0; y<s->mb_height; y++){
- for(x=0; x<s->mb_width; x++){
- printf("%2d ", qtab[x + y*s->mb_width]);
- }
- printf("\n");
- }
- printf("\n");
+ 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 */
- if(s->last_picture.data[0] || s->low_delay)
+ /* don't output the last pic after seeking */
+ if(s->last_picture_ptr || s->low_delay)
*data_size = sizeof(AVFrame);
#ifdef PRINT_FRAME_TIME
printf("%Ld\n", rdtsc()-time);
#endif
+
return get_consumed_bytes(s, buf_size);
}
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,
};
AVCodec h263_decoder = {
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
+ CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
+ .flush= ff_mpeg_flush,
};
AVCodec msmpeg4v1_decoder = {
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
};
+AVCodec flv_decoder = {
+ "flv",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_FLV1,
+ sizeof(MpegEncContext),
+ ff_h263_decode_init,
+ NULL,
+ ff_h263_decode_end,
+ 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