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support feeding individual NAL units to the decoder instead of just complete frames

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Originally committed as revision 8197 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-03-02 23:35:26 +00:00
parent 700b971156
commit 66a4b2c179
2 changed files with 37 additions and 33 deletions
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5
libavcodec/avcodec.h
View File

@ -37,8 +37,8 @@ extern "C" {
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define LIBAVCODEC_VERSION_INT ((51<<16)+(35<<8)+0)
#define LIBAVCODEC_VERSION 51.35.0
#define LIBAVCODEC_VERSION_INT ((51<<16)+(36<<8)+0)
#define LIBAVCODEC_VERSION 51.36.0
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@ -384,6 +384,7 @@ typedef struct RcOverride{
#define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format
#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skiping
#define CODEC_FLAG2_CHUNKS 0x00008000 ///< input bitstream might be truncated at a packet boundaries instead of only at frame boundaries
/* Unsupported options :
* Syntax Arithmetic coding (SAC)

65
libavcodec/h264.c
View File

@ -4516,6 +4516,11 @@ static int decode_slice_header(H264Context *h){
first_mb_in_slice= get_ue_golomb(&s->gb);
if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
h->slice_num = 0;
s->current_picture_ptr= NULL;
}
slice_type= get_ue_golomb(&s->gb);
if(slice_type > 9){
av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
@ -8095,8 +8100,11 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
}
#endif
h->slice_num = 0;
s->current_picture_ptr= NULL;
if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
h->slice_num = 0;
s->current_picture_ptr= NULL;
}
for(;;){
int consumed;
int dst_length;
@ -8232,24 +8240,6 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
}
}
if(!s->current_picture_ptr) return buf_index; //no frame
s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
s->current_picture_ptr->pict_type= s->pict_type;
h->prev_frame_num_offset= h->frame_num_offset;
h->prev_frame_num= h->frame_num;
if(s->current_picture_ptr->reference){
h->prev_poc_msb= h->poc_msb;
h->prev_poc_lsb= h->poc_lsb;
}
if(s->current_picture_ptr->reference)
execute_ref_pic_marking(h, h->mmco, h->mmco_index);
ff_er_frame_end(s);
MPV_frame_end(s);
return buf_index;
}
@ -8365,23 +8355,36 @@ static int decode_frame(AVCodecContext *avctx,
if(buf_index < 0)
return -1;
if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
Picture *out = s->current_picture_ptr;
Picture *cur = s->current_picture_ptr;
Picture *prev = h->delayed_output_pic;
int i, pics, cross_idr, out_of_order, out_idx;
s->mb_y= 0;
s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
s->current_picture_ptr->pict_type= s->pict_type;
h->prev_frame_num_offset= h->frame_num_offset;
h->prev_frame_num= h->frame_num;
if(s->current_picture_ptr->reference){
h->prev_poc_msb= h->poc_msb;
h->prev_poc_lsb= h->poc_lsb;
}
if(s->current_picture_ptr->reference)
execute_ref_pic_marking(h, h->mmco, h->mmco_index);
ff_er_frame_end(s);
MPV_frame_end(s);
//FIXME do something with unavailable reference frames
// if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_index, buf_size);
if(!s->current_picture_ptr){
av_log(h->s.avctx, AV_LOG_DEBUG, "error, NO frame\n");
return -1;
}
{
Picture *out = s->current_picture_ptr;
#if 0 //decode order
*data_size = sizeof(AVFrame);
#else
/* Sort B-frames into display order */
Picture *cur = s->current_picture_ptr;
Picture *prev = h->delayed_output_pic;
int i, pics, cross_idr, out_of_order, out_idx;
if(h->sps.bitstream_restriction_flag
&& s->avctx->has_b_frames < h->sps.num_reorder_frames){