mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
ffv1 rgb support
Originally committed as revision 2463 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
eb592f6af1
commit
2cbb7820c9
@ -177,11 +177,25 @@ typedef struct FFV1Context{
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int ac; ///< 1-> CABAC 0-> golomb rice
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PlaneContext plane[MAX_PLANES];
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int16_t quant_table[5][256];
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int run_index;
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int colorspace;
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DSPContext dsp;
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}FFV1Context;
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static inline int predict(uint8_t *src, uint8_t *last){
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static always_inline int fold(int diff, int bits){
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if(bits==8)
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diff= (int8_t)diff;
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else{
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diff+= 1<<(bits-1);
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diff&=(1<<bits)-1;
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diff-= 1<<(bits-1);
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}
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return diff;
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}
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static inline int predict(int_fast16_t *src, int_fast16_t *last){
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const int LT= last[-1];
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const int T= last[ 0];
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const int L = src[-1];
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@ -189,7 +203,7 @@ static inline int predict(uint8_t *src, uint8_t *last){
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return mid_pred(L, L + T - LT, T);
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}
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static inline int get_context(FFV1Context *f, uint8_t *src, uint8_t *last, uint8_t *last2){
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static inline int get_context(FFV1Context *f, int_fast16_t *src, int_fast16_t *last, int_fast16_t *last2){
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const int LT= last[-1];
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const int T= last[ 0];
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const int RT= last[ 1];
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@ -289,11 +303,11 @@ static inline void update_vlc_state(VlcState * const state, const int v){
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state->count= count;
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}
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static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v){
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static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v, int bits){
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int i, k, code;
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//printf("final: %d ", v);
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v = (int8_t)(v - state->bias);
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v = fold(v - state->bias, bits);
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i= state->count;
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k=0;
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while(i < state->error_sum){ //FIXME optimize
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@ -313,12 +327,12 @@ static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int
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code = -2*code-1;
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code^= (code>>31);
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//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);
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set_ur_golomb(pb, code, k, 12, 8);
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set_ur_golomb(pb, code, k, 12, bits);
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update_vlc_state(state, v);
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}
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static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state){
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static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){
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int k, i, v, ret;
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i= state->count;
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@ -330,7 +344,7 @@ static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state){
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assert(k<=8);
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v= get_ur_golomb(gb, k, 12, 8);
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v= get_ur_golomb(gb, k, 12, bits);
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//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
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v++;
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@ -343,91 +357,141 @@ static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state){
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v ^= ((2*state->drift + state->count)>>31);
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#endif
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ret= (int8_t)(v + state->bias);
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ret= fold(v + state->bias, bits);
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update_vlc_state(state, v);
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//printf("final: %d\n", ret);
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return ret;
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}
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static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
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static always_inline void encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){
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PlaneContext * const p= &s->plane[plane_index];
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CABACContext * const c= &s->c;
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int x;
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int run_index= s->run_index;
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int run_count=0;
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int run_mode=0;
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for(x=0; x<w; x++){
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int diff, context;
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context= get_context(s, sample[1]+x, sample[0]+x, sample[1]+x);
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diff= sample[1][x] - predict(sample[1]+x, sample[0]+x);
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if(context < 0){
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context = -context;
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diff= -diff;
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}
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diff= fold(diff, bits);
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if(s->ac){
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put_symbol(c, p->state[context], diff, 1, bits-1);
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}else{
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if(context == 0) run_mode=1;
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if(run_mode){
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if(diff){
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while(run_count >= 1<<log2_run[run_index]){
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run_count -= 1<<log2_run[run_index];
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run_index++;
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put_bits(&s->pb, 1, 1);
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}
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put_bits(&s->pb, 1 + log2_run[run_index], run_count);
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if(run_index) run_index--;
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run_count=0;
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run_mode=0;
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if(diff>0) diff--;
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}else{
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run_count++;
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}
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}
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// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)get_bit_count(&s->pb));
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if(run_mode == 0)
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put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
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}
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}
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if(run_mode){
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while(run_count >= 1<<log2_run[run_index]){
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run_count -= 1<<log2_run[run_index];
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run_index++;
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put_bits(&s->pb, 1, 1);
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}
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if(run_count)
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put_bits(&s->pb, 1, 1);
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}
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s->run_index= run_index;
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}
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static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
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int x,y;
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uint8_t sample_buffer[2][w+6];
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uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
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int run_index=0;
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int_fast16_t sample_buffer[2][w+6];
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int_fast16_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
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s->run_index=0;
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memset(sample_buffer, 0, sizeof(sample_buffer));
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for(y=0; y<h; y++){
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uint8_t *temp= sample[0]; //FIXME try a normal buffer
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int run_count=0;
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int run_mode=0;
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int_fast16_t *temp= sample[0]; //FIXME try a normal buffer
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sample[0]= sample[1];
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sample[1]= temp;
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sample[1][-1]= sample[0][0 ];
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sample[0][ w]= sample[0][w-1];
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//{START_TIMER
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for(x=0; x<w; x++){
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uint8_t *temp_src= src + x + stride*y;
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int diff, context;
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context= get_context(s, sample[1]+x, sample[0]+x, sample[1]+x);
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diff= temp_src[0] - predict(sample[1]+x, sample[0]+x);
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if(context < 0){
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context = -context;
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diff= -diff;
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}
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diff= (int8_t)diff;
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if(s->ac){
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put_symbol(c, p->state[context], diff, 1, 7);
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}else{
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if(context == 0) run_mode=1;
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if(run_mode){
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if(diff){
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while(run_count >= 1<<log2_run[run_index]){
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run_count -= 1<<log2_run[run_index];
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run_index++;
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put_bits(&s->pb, 1, 1);
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}
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put_bits(&s->pb, 1 + log2_run[run_index], run_count);
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if(run_index) run_index--;
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run_count=0;
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run_mode=0;
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if(diff>0) diff--;
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}else{
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run_count++;
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}
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}
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// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)get_bit_count(&s->pb));
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if(run_mode == 0)
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put_vlc_symbol(&s->pb, &p->vlc_state[context], diff);
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}
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sample[1][x]= temp_src[0];
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sample[1][x]= src[x + stride*y];
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}
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if(run_mode){
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while(run_count >= 1<<log2_run[run_index]){
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run_count -= 1<<log2_run[run_index];
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run_index++;
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put_bits(&s->pb, 1, 1);
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}
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encode_line(s, w, sample, plane_index, 8);
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//STOP_TIMER("encode line")}
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}
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}
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if(run_count)
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put_bits(&s->pb, 1, 1);
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static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
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int x, y, p;
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int_fast16_t sample_buffer[3][2][w+6];
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int_fast16_t *sample[3][2]= {
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{sample_buffer[0][0]+3, sample_buffer[0][1]+3},
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{sample_buffer[1][0]+3, sample_buffer[1][1]+3},
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{sample_buffer[2][0]+3, sample_buffer[2][1]+3}};
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s->run_index=0;
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memset(sample_buffer, 0, sizeof(sample_buffer));
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for(y=0; y<h; y++){
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for(x=0; x<w; x++){
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int v= src[x + stride*y];
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int b= v&0xFF;
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int g= (v>>8)&0xFF;
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int r= (v>>16)&0xFF;
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b -= g;
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r -= g;
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g += (b + r)>>2;
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b += 0x100;
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r += 0x100;
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// assert(g>=0 && b>=0 && r>=0);
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// assert(g<256 && b<512 && r<512);
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sample[0][0][x]= g;
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sample[1][0][x]= b;
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sample[2][0][x]= r;
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}
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for(p=0; p<3; p++){
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int_fast16_t *temp= sample[p][0]; //FIXME try a normal buffer
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sample[p][0]= sample[p][1];
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sample[p][1]= temp;
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sample[p][1][-1]= sample[p][0][0 ];
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sample[p][0][ w]= sample[p][0][w-1];
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encode_line(s, w, sample[p], FFMIN(p, 1), 9);
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}
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}
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}
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@ -453,7 +517,7 @@ static void write_header(FFV1Context *f){
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put_symbol(c, state, f->version, 0, 7);
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put_symbol(c, state, f->avctx->coder_type, 0, 7);
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put_symbol(c, state, 0, 0, 7); //YUV cs type
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put_symbol(c, state, f->colorspace, 0, 7); //YUV cs type
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put_cabac(c, state, 1); //chroma planes
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put_symbol(c, state, f->chroma_h_shift, 0, 7);
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put_symbol(c, state, f->chroma_v_shift, 0, 7);
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@ -528,14 +592,17 @@ static int encode_init(AVCodecContext *avctx)
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case PIX_FMT_YUV420P:
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case PIX_FMT_YUV411P:
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case PIX_FMT_YUV410P:
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avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
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s->colorspace= 0;
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break;
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case PIX_FMT_RGBA32:
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s->colorspace= 1;
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break;
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default:
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fprintf(stderr, "format not supported\n");
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return -1;
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}
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avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
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s->picture_number=0;
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return 0;
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@ -602,7 +669,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
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init_put_bits(&f->pb, buf + used_count, buf_size - used_count);
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}
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if(1){
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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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@ -610,6 +677,8 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
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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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}
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emms_c();
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@ -642,76 +711,128 @@ static int encode_end(AVCodecContext *avctx)
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return 0;
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}
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static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
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static always_inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){
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PlaneContext * const p= &s->plane[plane_index];
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CABACContext * const c= &s->c;
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int x,y;
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uint8_t sample_buffer[2][w+6];
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uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
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int run_index=0;
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int x;
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int run_count=0;
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int run_mode=0;
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int run_index= s->run_index;
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for(x=0; x<w; x++){
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int diff, context, sign;
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context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x);
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if(context < 0){
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context= -context;
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sign=1;
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}else
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sign=0;
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if(s->ac)
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diff= get_symbol(c, p->state[context], 1, bits-1);
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else{
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if(context == 0 && run_mode==0) run_mode=1;
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if(run_mode){
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if(run_count==0 && run_mode==1){
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if(get_bits1(&s->gb)){
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run_count = 1<<log2_run[run_index];
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if(x + run_count <= w) run_index++;
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}else{
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if(log2_run[run_index]) run_count = get_bits(&s->gb, log2_run[run_index]);
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else run_count=0;
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if(run_index) run_index--;
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run_mode=2;
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}
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}
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run_count--;
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if(run_count < 0){
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run_mode=0;
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run_count=0;
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diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
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if(diff>=0) diff++;
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}else
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diff=0;
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}else
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diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
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// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
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}
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if(sign) diff= -diff;
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sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);
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}
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s->run_index= run_index;
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}
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static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
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int x, y;
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int_fast16_t sample_buffer[2][w+6];
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int_fast16_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
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s->run_index=0;
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memset(sample_buffer, 0, sizeof(sample_buffer));
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for(y=0; y<h; y++){
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uint8_t *temp= sample[0]; //FIXME try a normal buffer
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int run_count=0;
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int run_mode=0;
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int_fast16_t *temp= sample[0]; //FIXME try a normal buffer
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sample[0]= sample[1];
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sample[1]= temp;
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sample[1][-1]= sample[0][0 ];
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sample[0][ w]= sample[0][w-1];
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//{START_TIMER
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decode_line(s, w, sample, plane_index, 8);
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for(x=0; x<w; x++){
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uint8_t *temp_src= src + x + stride*y;
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int diff, context, sign;
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context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x);
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if(context < 0){
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context= -context;
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sign=1;
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}else
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sign=0;
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src[x + stride*y]= sample[1][x];
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}
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//STOP_TIMER("decode-line")}
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}
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}
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static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
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int x, y, p;
|
||||
int_fast16_t sample_buffer[3][2][w+6];
|
||||
int_fast16_t *sample[3][2]= {
|
||||
{sample_buffer[0][0]+3, sample_buffer[0][1]+3},
|
||||
{sample_buffer[1][0]+3, sample_buffer[1][1]+3},
|
||||
{sample_buffer[2][0]+3, sample_buffer[2][1]+3}};
|
||||
|
||||
s->run_index=0;
|
||||
|
||||
memset(sample_buffer, 0, sizeof(sample_buffer));
|
||||
|
||||
for(y=0; y<h; y++){
|
||||
for(p=0; p<3; p++){
|
||||
int_fast16_t *temp= sample[p][0]; //FIXME try a normal buffer
|
||||
|
||||
sample[p][0]= sample[p][1];
|
||||
sample[p][1]= temp;
|
||||
|
||||
sample[p][1][-1]= sample[p][0][0 ];
|
||||
sample[p][0][ w]= sample[p][0][w-1];
|
||||
decode_line(s, w, sample[p], FFMIN(p, 1), 9);
|
||||
}
|
||||
for(x=0; x<w; x++){
|
||||
int g= sample[0][1][x];
|
||||
int b= sample[1][1][x];
|
||||
int r= sample[2][1][x];
|
||||
|
||||
// assert(g>=0 && b>=0 && r>=0);
|
||||
// assert(g<256 && b<512 && r<512);
|
||||
|
||||
|
||||
if(s->ac)
|
||||
diff= get_symbol(c, p->state[context], 1, 7);
|
||||
else{
|
||||
if(context == 0 && run_mode==0) run_mode=1;
|
||||
|
||||
if(run_mode){
|
||||
if(run_count==0 && run_mode==1){
|
||||
if(get_bits1(&s->gb)){
|
||||
run_count = 1<<log2_run[run_index];
|
||||
if(x + run_count <= w) run_index++;
|
||||
}else{
|
||||
if(log2_run[run_index]) run_count = get_bits(&s->gb, log2_run[run_index]);
|
||||
else run_count=0;
|
||||
if(run_index) run_index--;
|
||||
run_mode=2;
|
||||
}
|
||||
}
|
||||
run_count--;
|
||||
if(run_count < 0){
|
||||
run_mode=0;
|
||||
run_count=0;
|
||||
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]);
|
||||
if(diff>=0) diff++;
|
||||
}else
|
||||
diff=0;
|
||||
}else
|
||||
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]);
|
||||
|
||||
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
|
||||
}
|
||||
|
||||
if(sign) diff= (int8_t)(-diff); //FIXME remove cast
|
||||
|
||||
sample[1][x]=
|
||||
temp_src[0] = predict(sample[1] + x, sample[0] + x) + diff;
|
||||
b -= 0x100;
|
||||
r -= 0x100;
|
||||
g -= (b + r)>>2;
|
||||
b += g;
|
||||
r += g;
|
||||
|
||||
assert(diff>= -128 && diff <= 127);
|
||||
src[x + stride*y]= b + (g<<8) + (r<<16);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -749,23 +870,35 @@ static int read_header(FFV1Context *f){
|
||||
|
||||
f->version= get_symbol(c, state, 0, 7);
|
||||
f->ac= f->avctx->coder_type= get_symbol(c, state, 0, 7);
|
||||
get_symbol(c, state, 0, 7); //YUV cs type
|
||||
f->colorspace= get_symbol(c, state, 0, 7); //YUV cs type
|
||||
get_cabac(c, state); //no chroma = false
|
||||
f->chroma_h_shift= get_symbol(c, state, 0, 7);
|
||||
f->chroma_v_shift= get_symbol(c, state, 0, 7);
|
||||
get_cabac(c, state); //transparency plane
|
||||
f->plane_count= 2;
|
||||
|
||||
switch(16*f->chroma_h_shift + f->chroma_v_shift){
|
||||
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;
|
||||
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;
|
||||
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;
|
||||
case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;
|
||||
case 0x33: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;
|
||||
default:
|
||||
fprintf(stderr, "format not supported\n");
|
||||
if(f->colorspace==0){
|
||||
switch(16*f->chroma_h_shift + f->chroma_v_shift){
|
||||
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;
|
||||
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;
|
||||
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;
|
||||
case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;
|
||||
case 0x33: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;
|
||||
default:
|
||||
fprintf(stderr, "format not supported\n");
|
||||
return -1;
|
||||
}
|
||||
}else if(f->colorspace==1){
|
||||
if(f->chroma_h_shift || f->chroma_v_shift){
|
||||
fprintf(stderr, "chroma subsampling not supported in this colorspace\n");
|
||||
return -1;
|
||||
}
|
||||
f->avctx->pix_fmt= PIX_FMT_RGBA32;
|
||||
}else{
|
||||
fprintf(stderr, "colorspace not supported\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
|
||||
|
||||
context_count=1;
|
||||
@ -799,27 +932,6 @@ static int decode_init(AVCodecContext *avctx)
|
||||
|
||||
common_init(avctx);
|
||||
|
||||
#if 0
|
||||
switch(s->bitstream_bpp){
|
||||
case 12:
|
||||
avctx->pix_fmt = PIX_FMT_YUV420P;
|
||||
break;
|
||||
case 16:
|
||||
avctx->pix_fmt = PIX_FMT_YUV422P;
|
||||
break;
|
||||
case 24:
|
||||
case 32:
|
||||
if(s->bgr32){
|
||||
avctx->pix_fmt = PIX_FMT_RGBA32;
|
||||
}else{
|
||||
avctx->pix_fmt = PIX_FMT_BGR24;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -869,13 +981,15 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
|
||||
bytes_read = 0; /* avoid warning */
|
||||
}
|
||||
|
||||
if(1){
|
||||
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);
|
||||
}
|
||||
|
||||
emms_c();
|
||||
|
@ -147,6 +147,7 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
|
||||
.color_type = FF_COLOR_RGB,
|
||||
.pixel_type = FF_PIXEL_PACKED,
|
||||
.depth = 8,
|
||||
.x_chroma_shift = 0, .y_chroma_shift = 0,
|
||||
},
|
||||
[PIX_FMT_BGR24] = {
|
||||
.name = "bgr24",
|
||||
@ -154,6 +155,7 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
|
||||
.color_type = FF_COLOR_RGB,
|
||||
.pixel_type = FF_PIXEL_PACKED,
|
||||
.depth = 8,
|
||||
.x_chroma_shift = 0, .y_chroma_shift = 0,
|
||||
},
|
||||
[PIX_FMT_RGBA32] = {
|
||||
.name = "rgba32",
|
||||
@ -161,6 +163,7 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
|
||||
.color_type = FF_COLOR_RGB,
|
||||
.pixel_type = FF_PIXEL_PACKED,
|
||||
.depth = 8,
|
||||
.x_chroma_shift = 0, .y_chroma_shift = 0,
|
||||
},
|
||||
[PIX_FMT_RGB565] = {
|
||||
.name = "rgb565",
|
||||
@ -168,6 +171,7 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
|
||||
.color_type = FF_COLOR_RGB,
|
||||
.pixel_type = FF_PIXEL_PACKED,
|
||||
.depth = 5,
|
||||
.x_chroma_shift = 0, .y_chroma_shift = 0,
|
||||
},
|
||||
[PIX_FMT_RGB555] = {
|
||||
.name = "rgb555",
|
||||
@ -175,6 +179,7 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
|
||||
.color_type = FF_COLOR_RGB,
|
||||
.pixel_type = FF_PIXEL_PACKED,
|
||||
.depth = 5,
|
||||
.x_chroma_shift = 0, .y_chroma_shift = 0,
|
||||
},
|
||||
|
||||
/* gray / mono formats */
|
||||
|
Loading…
Reference in New Issue
Block a user