Rectangular slice support for ffv1.2
Originally committed as revision 25474 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
81e5ff7ae2
commit
e2b2f8454c
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@ -32,6 +32,7 @@
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#include "rangecoder.h"
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#include "golomb.h"
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#include "mathops.h"
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#include "libavutil/avassert.h"
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#define MAX_PLANES 4
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#define CONTEXT_SIZE 32
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@ -221,6 +222,8 @@ typedef struct PlaneContext{
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uint8_t interlace_bit_state[2];
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} PlaneContext;
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#define MAX_SLICES 256
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typedef struct FFV1Context{
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AVCodecContext *avctx;
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RangeCoder c;
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@ -246,6 +249,15 @@ typedef struct FFV1Context{
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int quant_table_count;
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DSPContext dsp;
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struct FFV1Context *slice_context[MAX_SLICES];
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int slice_count;
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int num_v_slices;
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int num_h_slices;
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int slice_width;
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int slice_height;
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int slice_x;
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int slice_y;
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}FFV1Context;
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static av_always_inline int fold(int diff, int bits){
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@ -606,7 +618,7 @@ static void write_quant_tables(RangeCoder *c, int16_t quant_table[5][256]){
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static void write_header(FFV1Context *f){
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uint8_t state[CONTEXT_SIZE];
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int i;
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RangeCoder * const c= &f->c;
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RangeCoder * const c= &f->slice_context[0]->c;
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memset(state, 128, sizeof(state));
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@ -646,10 +658,10 @@ static av_cold int common_init(AVCodecContext *avctx){
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s->height= avctx->height;
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assert(s->width && s->height);
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//defaults
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s->num_h_slices=1;
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s->num_v_slices=1;
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s->sample_buffer = av_malloc(6 * (s->width+6) * sizeof(*s->sample_buffer));
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if (!s->sample_buffer)
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return AVERROR(ENOMEM);
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return 0;
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}
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@ -679,6 +691,8 @@ static int write_extra_header(FFV1Context *f){
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put_symbol(c, state, f->chroma_h_shift, 0);
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put_symbol(c, state, f->chroma_v_shift, 0);
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put_rac(c, state, 0); //no transparency plane
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put_symbol(c, state, f->num_h_slices-1, 0);
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put_symbol(c, state, f->num_v_slices-1, 0);
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put_symbol(c, state, f->quant_table_count, 0);
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for(i=0; i<f->quant_table_count; i++)
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@ -689,6 +703,65 @@ static int write_extra_header(FFV1Context *f){
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return 0;
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}
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static int init_slice_state(FFV1Context *f){
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int i, j;
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for(i=0; i<f->slice_count; i++){
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FFV1Context *fs= f->slice_context[i];
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for(j=0; j<f->plane_count; j++){
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PlaneContext * const p= &fs->plane[j];
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if(fs->ac){
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if(!p-> state) p-> state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
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if(!p-> state)
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return AVERROR(ENOMEM);
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}else{
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if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
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if(!p->vlc_state)
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return AVERROR(ENOMEM);
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}
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}
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if (fs->ac>1){
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//FIXME only redo if state_transition changed
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for(j=1; j<256; j++){
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fs->c.one_state [ j]= fs->state_transition[j];
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fs->c.zero_state[256-j]= 256-fs->c.one_state [j];
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}
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}
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}
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return 0;
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}
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static av_cold int init_slice_contexts(FFV1Context *f){
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int i;
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f->slice_count= f->num_h_slices * f->num_v_slices;
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for(i=0; i<f->slice_count; i++){
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FFV1Context *fs= av_mallocz(sizeof(*fs));
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int sx= i % f->num_h_slices;
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int sy= i / f->num_h_slices;
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int sxs= f->avctx->width * sx / f->num_h_slices;
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int sxe= f->avctx->width *(sx+1) / f->num_h_slices;
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int sys= f->avctx->height* sy / f->num_v_slices;
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int sye= f->avctx->height*(sy+1) / f->num_v_slices;
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f->slice_context[i]= fs;
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memcpy(fs, f, sizeof(*fs));
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fs->slice_width = sxe - sxs;
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fs->slice_height= sye - sys;
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fs->slice_x = sxs;
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fs->slice_y = sys;
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fs->sample_buffer = av_malloc(6 * (fs->slice_width+6) * sizeof(*fs->sample_buffer));
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if (!fs->sample_buffer)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static av_cold int encode_init(AVCodecContext *avctx)
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{
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FFV1Context *s = avctx->priv_data;
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@ -732,12 +805,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
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}else{
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p->context_count= (11*11*5*5*5+1)/2;
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}
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if(s->ac){
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if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
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}else{
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if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
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}
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}
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avctx->coded_frame= &s->picture;
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@ -772,8 +839,16 @@ static av_cold int encode_init(AVCodecContext *avctx)
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s->picture_number=0;
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if(s->version>1)
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if(s->version>1){
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s->num_h_slices=2;
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s->num_v_slices=2;
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write_extra_header(s);
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}
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if(init_slice_contexts(s) < 0)
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return -1;
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if(init_slice_state(s) < 0)
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return -1;
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return 0;
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}
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@ -781,16 +856,18 @@ static av_cold int encode_init(AVCodecContext *avctx)
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static void clear_state(FFV1Context *f){
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int i, j;
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int i, si, j;
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for(si=0; si<f->slice_count; si++){
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FFV1Context *fs= f->slice_context[si];
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for(i=0; i<f->plane_count; i++){
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PlaneContext *p= &f->plane[i];
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PlaneContext *p= &fs->plane[i];
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p->interlace_bit_state[0]= 128;
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p->interlace_bit_state[1]= 128;
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for(j=0; j<p->context_count; j++){
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if(f->ac){
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if(fs->ac){
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memset(p->state[j], 128, sizeof(uint8_t)*CONTEXT_SIZE);
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}else{
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p->vlc_state[j].drift= 0;
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@ -800,18 +877,46 @@ static void clear_state(FFV1Context *f){
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}
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}
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}
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}
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}
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#if CONFIG_FFV1_ENCODER
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static int encode_slice(AVCodecContext *c, void *arg){
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FFV1Context *fs= *(void**)arg;
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FFV1Context *f= fs->avctx->priv_data;
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int width = fs->slice_width;
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int height= fs->slice_height;
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int x= fs->slice_x;
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int y= fs->slice_y;
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AVFrame * const p= &f->picture;
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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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const int chroma_height= -((-height)>>f->chroma_v_shift);
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const int cx= x>>f->chroma_h_shift;
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const int cy= y>>f->chroma_v_shift;
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encode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
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encode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
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encode_plane(fs, p->data[2] + cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
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}else{
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encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
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}
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emms_c();
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return 0;
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}
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static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
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FFV1Context *f = avctx->priv_data;
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RangeCoder * const c= &f->c;
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RangeCoder * const c= &f->slice_context[0]->c;
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AVFrame *pict = data;
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const int width= f->width;
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const int height= f->height;
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AVFrame * const p= &f->picture;
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int used_count= 0;
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uint8_t keystate=128;
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uint8_t *buf_p;
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int i;
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ff_init_range_encoder(c, buf, buf_size);
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ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
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@ -832,7 +937,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
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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->pb, buf + used_count, buf_size - used_count);
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init_put_bits(&f->slice_context[0]->pb, buf + used_count, buf_size - used_count);
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}else if (f->ac>1){
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int i;
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for(i=1; i<256; i++){
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@ -841,42 +946,62 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
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}
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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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const int chroma_height= -((-height)>>f->chroma_v_shift);
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for(i=1; i<f->slice_count; i++){
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FFV1Context *fs= f->slice_context[i];
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uint8_t *start= buf + (buf_size-used_count)*i/f->slice_count;
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int len= buf_size/f->slice_count;
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encode_plane(f, p->data[0], width, height, p->linesize[0], 0);
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encode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1);
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encode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1);
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}else{
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encode_rgb_frame(f, (uint32_t*)(p->data[0]), width, height, p->linesize[0]/4);
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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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}
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avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
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buf_p=buf;
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for(i=0; i<f->slice_count; i++){
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FFV1Context *fs= f->slice_context[i];
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int bytes;
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if(fs->ac){
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uint8_t state=128;
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put_rac(&fs->c, &state, 0);
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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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}
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if(i>0){
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av_assert0(bytes < buf_size/f->slice_count);
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memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes);
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av_assert0(bytes < (1<<24));
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AV_WB24(buf_p+bytes, bytes);
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bytes+=3;
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}
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buf_p += bytes;
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}
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emms_c();
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f->picture_number++;
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if(f->ac){
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return ff_rac_terminate(c);
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}else{
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flush_put_bits(&f->pb); //nicer padding FIXME
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return used_count + (put_bits_count(&f->pb)+7)/8;
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}
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return buf_p-buf;
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}
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#endif /* CONFIG_FFV1_ENCODER */
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static av_cold int common_end(AVCodecContext *avctx){
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FFV1Context *s = avctx->priv_data;
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int i;
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int i, j;
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for(j=0; j<s->slice_count; j++){
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FFV1Context *fs= s->slice_context[j];
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for(i=0; i<s->plane_count; i++){
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PlaneContext *p= &s->plane[i];
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PlaneContext *p= &fs->plane[i];
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av_freep(&p->state);
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av_freep(&p->vlc_state);
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}
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av_freep(&s->sample_buffer);
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av_freep(&fs->sample_buffer);
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}
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return 0;
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}
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@ -1015,6 +1140,34 @@ static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
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}
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}
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static int decode_slice(AVCodecContext *c, void *arg){
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FFV1Context *fs= *(void**)arg;
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FFV1Context *f= fs->avctx->priv_data;
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int width = fs->slice_width;
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int height= fs->slice_height;
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int x= fs->slice_x;
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int y= fs->slice_y;
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AVFrame * const p= &f->picture;
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av_assert1(width && height);
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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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const int chroma_height= -((-height)>>f->chroma_v_shift);
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const int cx= x>>f->chroma_h_shift;
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const int cy= y>>f->chroma_v_shift;
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decode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
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decode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
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decode_plane(fs, p->data[2] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[2], 1);
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}else{
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decode_rgb_frame(fs, (uint32_t*)p->data[0] + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
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}
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emms_c();
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return 0;
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}
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static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){
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int v;
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int i=0;
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@ -1080,6 +1233,12 @@ static int read_extra_header(FFV1Context *f){
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f->chroma_v_shift= get_symbol(c, state, 0);
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get_rac(c, state); //transparency plane
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f->plane_count= 2;
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f->num_h_slices= 1 + get_symbol(c, state, 0);
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f->num_v_slices= 1 + get_symbol(c, state, 0);
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if(f->num_h_slices > 256U || f->num_v_slices > 256U || f->num_h_slices*f->num_v_slices > MAX_SLICES){
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av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
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return -1;
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}
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f->quant_table_count= get_symbol(c, state, 0);
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if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
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@ -1096,8 +1255,8 @@ static int read_extra_header(FFV1Context *f){
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static int read_header(FFV1Context *f){
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uint8_t state[CONTEXT_SIZE];
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int i, context_count;
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RangeCoder * const c= &f->c;
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int i, j, context_count;
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RangeCoder * const c= &f->slice_context[0]->c;
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memset(state, 128, sizeof(state));
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@ -1169,16 +1328,19 @@ static int read_header(FFV1Context *f){
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memcpy(f->quant_table, f->quant_tables[i], sizeof(f->quant_table));
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context_count= f->context_count[i];
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}
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for(j=0; j<f->slice_count; j++){
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FFV1Context *fs= f->slice_context[j];
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memcpy(fs->quant_table, f->quant_table, sizeof(fs->quant_table));
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fs->ac= f->ac;
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for(i=0; i<f->plane_count; i++){
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PlaneContext * const p= &f->plane[i];
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PlaneContext * const p= &fs->plane[i];
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p->context_count= context_count;
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if(f->ac){
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if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
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}else{
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if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
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if(p->context_count < context_count){
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av_freep(&p->state);
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av_freep(&p->vlc_state);
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}
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p->context_count= context_count;
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}
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}
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return 0;
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@ -1190,8 +1352,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
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common_init(avctx);
|
||||
|
||||
if(avctx->extradata)
|
||||
return read_extra_header(f);
|
||||
if(avctx->extradata && read_extra_header(f) < 0)
|
||||
return -1;
|
||||
|
||||
if(init_slice_contexts(f) < 0)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1200,12 +1365,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
|
|||
const uint8_t *buf = avpkt->data;
|
||||
int buf_size = avpkt->size;
|
||||
FFV1Context *f = avctx->priv_data;
|
||||
RangeCoder * const c= &f->c;
|
||||
const int width= f->width;
|
||||
const int height= f->height;
|
||||
RangeCoder * const c= &f->slice_context[0]->c;
|
||||
AVFrame * const p= &f->picture;
|
||||
int bytes_read;
|
||||
int bytes_read, i;
|
||||
uint8_t keystate= 128;
|
||||
const uint8_t *buf_p;
|
||||
|
||||
AVFrame *picture = data;
|
||||
|
||||
|
|
@ -1218,6 +1382,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
|
|||
p->key_frame= 1;
|
||||
if(read_header(f) < 0)
|
||||
return -1;
|
||||
if(init_slice_state(f) < 0)
|
||||
return -1;
|
||||
|
||||
clear_state(f);
|
||||
}else{
|
||||
p->key_frame= 0;
|
||||
|
|
@ -1230,9 +1397,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
|
|||
}
|
||||
}
|
||||
|
||||
if(!f->plane[0].state && !f->plane[0].vlc_state)
|
||||
return -1;
|
||||
|
||||
p->reference= 0;
|
||||
if(avctx->get_buffer(avctx, p) < 0){
|
||||
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
||||
|
|
@ -1246,24 +1410,28 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
|
|||
bytes_read = c->bytestream - c->bytestream_start - 1;
|
||||
if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME
|
||||
//printf("pos=%d\n", bytes_read);
|
||||
init_get_bits(&f->gb, buf + bytes_read, buf_size - bytes_read);
|
||||
init_get_bits(&f->slice_context[0]->gb, buf + bytes_read, buf_size - bytes_read);
|
||||
} else {
|
||||
bytes_read = 0; /* avoid warning */
|
||||
}
|
||||
|
||||
if(f->colorspace==0){
|
||||
const int chroma_width = -((-width )>>f->chroma_h_shift);
|
||||
const int chroma_height= -((-height)>>f->chroma_v_shift);
|
||||
decode_plane(f, p->data[0], width, height, p->linesize[0], 0);
|
||||
|
||||
decode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1);
|
||||
decode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1);
|
||||
}else{
|
||||
decode_rgb_frame(f, (uint32_t*)p->data[0], width, height, p->linesize[0]/4);
|
||||
buf_p= buf + buf_size;
|
||||
for(i=f->slice_count-1; i>0; i--){
|
||||
FFV1Context *fs= f->slice_context[i];
|
||||
int v= AV_RB24(buf_p-3)+3;
|
||||
if(buf_p - buf <= v){
|
||||
av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
|
||||
return -1;
|
||||
}
|
||||
buf_p -= v;
|
||||
if(fs->ac){
|
||||
ff_init_range_decoder(&fs->c, buf_p, v);
|
||||
}else{
|
||||
init_get_bits(&fs->gb, buf_p, v);
|
||||
}
|
||||
}
|
||||
|
||||
emms_c();
|
||||
|
||||
avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
|
||||
f->picture_number++;
|
||||
|
||||
*picture= *p;
|
||||
|
|
@ -1272,14 +1440,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
|
|||
|
||||
*data_size = sizeof(AVFrame);
|
||||
|
||||
if(f->ac){
|
||||
bytes_read= c->bytestream - c->bytestream_start - 1;
|
||||
if(bytes_read ==0) av_log(f->avctx, AV_LOG_ERROR, "error at end of frame\n");
|
||||
}else{
|
||||
bytes_read+= (get_bits_count(&f->gb)+7)/8;
|
||||
}
|
||||
|
||||
return bytes_read;
|
||||
return buf_size;
|
||||
}
|
||||
|
||||
AVCodec ffv1_decoder = {
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user