mirror of https://git.ffmpeg.org/ffmpeg.git
ffv1: move ac->vlc switch to encode_slice()
This will allow us to use vlc coding in 1.3 too Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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2b336df3cb
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@ -181,6 +181,7 @@ typedef struct FFV1Context{
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AVFrame picture;
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int plane_count;
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int ac; ///< 1=range coder <-> 0=golomb rice
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int ac_byte_count; ///< number of bytes used for AC coding
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PlaneContext plane[MAX_PLANES];
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int16_t quant_table[MAX_CONTEXT_INPUTS][256];
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int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
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@ -1195,6 +1196,10 @@ static int encode_slice(AVCodecContext *c, void *arg){
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if(f->version > 2){
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encode_slice_header(f, fs);
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}
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if(!fs->ac){
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fs->ac_byte_count = f->version > 2 || (!x&&!y) ? ff_rac_terminate(&fs->c) : 0;
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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);
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}
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if(f->colorspace==0){
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const int chroma_width = -((-width )>>f->chroma_h_shift);
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@ -1250,11 +1255,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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p->key_frame= 0;
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}
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if(!f->ac){
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used_count += ff_rac_terminate(c);
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//printf("pos=%d\n", used_count);
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init_put_bits(&f->slice_context[0]->pb, pkt->data + used_count, pkt->size - used_count);
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}else if (f->ac>1){
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if (f->ac>1){
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int i;
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for(i=1; i<256; i++){
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c->one_state[i]= f->state_transition[i];
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@ -1267,11 +1268,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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uint8_t *start = pkt->data + (pkt->size-used_count)*i/f->slice_count;
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int len = pkt->size/f->slice_count;
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if(fs->ac){
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ff_init_range_encoder(&fs->c, start, len);
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}else{
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init_put_bits(&fs->pb, start, len);
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}
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ff_init_range_encoder(&fs->c, start, len);
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}
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avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
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@ -1286,8 +1283,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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bytes= ff_rac_terminate(&fs->c);
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}else{
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flush_put_bits(&fs->pb); //nicer padding FIXME
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bytes= used_count + (put_bits_count(&fs->pb)+7)/8;
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used_count= 0;
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bytes= fs->ac_byte_count + (put_bits_count(&fs->pb)+7)/8;
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}
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if(i>0){
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av_assert0(bytes < pkt->size/f->slice_count);
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