generic-library/ffmpeg
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ffv1: move ac->vlc switch to encode_slice()

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This will allow us to use vlc coding in 1.3 too

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-24 22:54:50 +02:00
parent 2b336df3cb
commit e37419a806
1 changed files with 8 additions and 12 deletions
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18
libavcodec/ffv1.c
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@ -181,6 +181,7 @@ typedef struct FFV1Context{
AVFrame picture;
int plane_count;
int ac; ///< 1=range coder <-> 0=golomb rice
int ac_byte_count; ///< number of bytes used for AC coding
PlaneContext plane[MAX_PLANES];
int16_t quant_table[MAX_CONTEXT_INPUTS][256];
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
@ -1195,6 +1196,10 @@ static int encode_slice(AVCodecContext *c, void *arg){
if(f->version > 2){
encode_slice_header(f, fs);
}
if(!fs->ac){
fs->ac_byte_count = f->version > 2 || (!x&&!y) ? ff_rac_terminate(&fs->c) : 0;
init_put_bits(&fs->pb, fs->c.bytestream_start + fs->ac_byte_count, fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
}
if(f->colorspace==0){
const int chroma_width = -((-width )>>f->chroma_h_shift);
@ -1250,11 +1255,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
p->key_frame= 0;
}
if(!f->ac){
used_count += ff_rac_terminate(c);
//printf("pos=%d\n", used_count);
init_put_bits(&f->slice_context[0]->pb, pkt->data + used_count, pkt->size - used_count);
}else if (f->ac>1){
if (f->ac>1){
int i;
for(i=1; i<256; i++){
c->one_state[i]= f->state_transition[i];
@ -1267,11 +1268,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
uint8_t *start = pkt->data + (pkt->size-used_count)*i/f->slice_count;
int len = pkt->size/f->slice_count;
if(fs->ac){
ff_init_range_encoder(&fs->c, start, len);
}else{
init_put_bits(&fs->pb, start, len);
}
}
avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
@ -1286,8 +1283,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
bytes= ff_rac_terminate(&fs->c);
}else{
flush_put_bits(&fs->pb); //nicer padding FIXME
bytes= used_count + (put_bits_count(&fs->pb)+7)/8;
used_count= 0;
bytes= fs->ac_byte_count + (put_bits_count(&fs->pb)+7)/8;
}
if(i>0){
av_assert0(bytes < pkt->size/f->slice_count);