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flv dropable p frame support

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Originally committed as revision 3027 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-04-17 13:36:21 +00:00
parent 068f2a22db
commit 14e2a9404e
3 changed files with 14 additions and 5 deletions
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4
libavcodec/h263.c
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@ -6054,8 +6054,10 @@ int flv_h263_decode_picture_header(MpegEncContext *s)
s->height = height;
s->pict_type = I_TYPE + get_bits(&s->gb, 2);
if (s->pict_type > P_TYPE)
s->dropable= s->pict_type > P_TYPE;
if (s->dropable)
s->pict_type = P_TYPE;
skip_bits1(&s->gb); /* deblocking flag */
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);

12
libavcodec/mpegvideo.c
View File

@ -1338,7 +1338,7 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
/* mark&release old frames */
if (s->pict_type != B_TYPE && s->last_picture_ptr && s->last_picture_ptr->data[0]) {
if (s->pict_type != B_TYPE && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->data[0]) {
avctx->release_buffer(avctx, (AVFrame*)s->last_picture_ptr);
/* release forgotten pictures */
@ -1368,7 +1368,7 @@ alloc:
pic= (AVFrame*)&s->picture[i];
}
pic->reference= s->pict_type != B_TYPE ? 3 : 0;
pic->reference= s->pict_type != B_TYPE && !s->dropable ? 3 : 0;
pic->coded_picture_number= s->coded_picture_number++;
@ -1390,8 +1390,14 @@ alloc:
if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
if (s->pict_type != B_TYPE) {
s->last_picture_ptr= s->next_picture_ptr;
s->next_picture_ptr= s->current_picture_ptr;
if(!s->dropable)
s->next_picture_ptr= s->current_picture_ptr;
}
/* av_log(s->avctx, AV_LOG_DEBUG, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n", s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
s->last_picture_ptr ? s->last_picture_ptr->data[0] : NULL,
s->next_picture_ptr ? s->next_picture_ptr->data[0] : NULL,
s->current_picture_ptr ? s->current_picture_ptr->data[0] : NULL,
s->pict_type, s->dropable);*/
if(s->last_picture_ptr) copy_picture(&s->last_picture, s->last_picture_ptr);
if(s->next_picture_ptr) copy_picture(&s->next_picture, s->next_picture_ptr);

3
libavcodec/mpegvideo.h
View File

@ -355,8 +355,9 @@ typedef struct MpegEncContext {
int adaptive_quant; ///< use adaptive quantization
int dquant; ///< qscale difference to prev qscale
int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
int last_pict_type;
int last_pict_type; //FIXME removes
int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
int dropable;
int frame_rate_index;
int frame_rate_ext_n; ///< MPEG-2 specific framerate modificators (numerator)
int frame_rate_ext_d; ///< MPEG-2 specific framerate modificators (denominator)