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FFV1 initial state 2pass code.

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Originally committed as revision 25584 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-10-26 23:01:17 +00:00
parent 28a3f525c9
commit b7b5bccb8d
1 changed files with 63 additions and 3 deletions
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66
libavcodec/ffv1.c
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@ -742,6 +742,7 @@ static av_cold int init_slice_contexts(FFV1Context *f){
int sye= f->avctx->height*(sy+1) / f->num_v_slices;
f->slice_context[i]= fs;
memcpy(fs, f, sizeof(*fs));
memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));
fs->slice_width = sxe - sxs;
fs->slice_height= sye - sys;
@ -869,7 +870,7 @@ static int sort_stt(FFV1Context *s, uint8_t stt[256]){
static av_cold int encode_init(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
int i, j;
int i, j, k, m;
common_init(avctx);
@ -950,9 +951,18 @@ static av_cold int encode_init(AVCodecContext *avctx)
s->picture_number=0;
if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){
for(i=0; i<s->quant_table_count; i++){
s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));
if(!s->rc_stat2[i])
return AVERROR(ENOMEM);
}
}
if(avctx->stats_in){
char *p= avctx->stats_in;
av_assert0(s->version>=2);
for(;;){
for(j=0; j<256; j++){
for(i=0; i<2; i++){
@ -965,10 +975,38 @@ static av_cold int encode_init(AVCodecContext *avctx)
p=next;
}
}
for(i=0; i<s->quant_table_count; i++){
for(j=0; j<s->context_count[i]; j++){
for(k=0; k<32; k++){
for(m=0; m<2; m++){
char *next;
s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);
if(next==p){
av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);
return -1;
}
p=next;
}
}
}
}
while(*p=='\n' || *p==' ') p++;
if(p[0]==0) break;
}
sort_stt(s, s->state_transition);
for(i=0; i<s->quant_table_count; i++){
for(j=0; j<s->context_count[i]; j++){
for(k=0; k<32; k++){
int p= 128;
if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){
p=256*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]);
}
p= av_clip(p, 1, 254);
s->initial_states[i][j][k]= p;
}
}
}
}
if(s->version>1){
@ -982,7 +1020,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
if(init_slice_state(s) < 0)
return -1;
#define STATS_OUT_SIZE 1024*30
#define STATS_OUT_SIZE 1024*1024*6
if(avctx->flags & CODEC_FLAG_PASS1){
avctx->stats_out= av_mallocz(STATS_OUT_SIZE);
for(i=0; i<s->quant_table_count; i++){
@ -1133,17 +1171,28 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
}
if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){
int j;
int j, k, m;
char *p= avctx->stats_out;
char *end= p + STATS_OUT_SIZE;
memset(f->rc_stat, 0, sizeof(f->rc_stat));
for(i=0; i<f->quant_table_count; i++)
memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i]));
for(j=0; j<f->slice_count; j++){
FFV1Context *fs= f->slice_context[j];
for(i=0; i<256; i++){
f->rc_stat[i][0] += fs->rc_stat[i][0];
f->rc_stat[i][1] += fs->rc_stat[i][1];
}
for(i=0; i<f->quant_table_count; i++){
for(k=0; k<f->context_count[i]; k++){
for(m=0; m<32; m++){
f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
}
}
}
}
for(j=0; j<256; j++){
@ -1151,6 +1200,16 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
p+= strlen(p);
}
snprintf(p, end-p, "\n");
for(i=0; i<f->quant_table_count; i++){
for(j=0; j<f->context_count[i]; j++){
for(m=0; m<32; m++){
snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
p+= strlen(p);
}
}
}
snprintf(p, end-p, "\n");
} else if(avctx->flags&CODEC_FLAG_PASS1)
avctx->stats_out[0] = '\0';
@ -1181,6 +1240,7 @@ static av_cold int common_end(AVCodecContext *avctx){
FFV1Context *sf= s->slice_context[i];
av_freep(&sf->rc_stat2[j]);
}
av_freep(&s->rc_stat2[j]);
}
return 0;