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Diffstat (limited to 'libavcodec/ffv1.c')
-rw-r--r--libavcodec/ffv1.c128
1 files changed, 64 insertions, 64 deletions
diff --git a/libavcodec/ffv1.c b/libavcodec/ffv1.c
index 57ed9adb52..71bb887318 100644
--- a/libavcodec/ffv1.c
+++ b/libavcodec/ffv1.c
@@ -18,7 +18,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
-
+
/**
* @file ffv1.c
* FF Video Codec 1 (an experimental lossless codec)
@@ -144,8 +144,8 @@ static const int8_t quant13[256]={
};
static const uint8_t log2_run[32]={
- 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
- 4, 4, 5, 5, 6, 6, 7, 7,
+ 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
+ 4, 4, 5, 5, 6, 6, 7, 7,
8, 9,10,11,12,13,14,15,
};
@@ -180,8 +180,8 @@ typedef struct FFV1Context{
int16_t quant_table[5][256];
int run_index;
int colorspace;
-
- DSPContext dsp;
+
+ DSPContext dsp;
}FFV1Context;
static always_inline int fold(int diff, int bits){
@@ -226,7 +226,7 @@ static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signe
const int a= ABS(v);
const int e= av_log2(a);
put_rac(c, state+0, 0);
-
+
assert(e<=9);
for(i=0; i<e; i++){
@@ -283,15 +283,15 @@ static inline void update_vlc_state(VlcState * const state, const int v){
if(drift <= -count){
if(state->bias > -128) state->bias--;
-
+
drift += count;
if(drift <= -count)
drift= -count + 1;
}else if(drift > 0){
if(state->bias < 127) state->bias++;
-
+
drift -= count;
- if(drift > 0)
+ if(drift > 0)
drift= 0;
}
@@ -319,7 +319,7 @@ static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int
#else
code= v ^ ((2*state->drift + state->count)>>31);
#endif
-
+
//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);
set_sr_golomb(pb, code, k, 12, bits);
@@ -348,7 +348,7 @@ static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int
#endif
ret= fold(v + state->bias, bits);
-
+
update_vlc_state(state, v);
//printf("final: %d\n", ret);
return ret;
@@ -376,7 +376,7 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
for(x=0; x<w; x++){
int diff, context;
-
+
context= get_context(s, sample[0]+x, sample[1]+x, sample[2]+x);
diff= sample[0][x] - predict(sample[0]+x, sample[1]+x);
@@ -386,12 +386,12 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
}
diff= fold(diff, bits);
-
+
if(s->ac){
put_symbol(c, p->state[context], diff, 1);
}else{
if(context == 0) run_mode=1;
-
+
if(run_mode){
if(diff){
@@ -400,7 +400,7 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
run_index++;
put_bits(&s->pb, 1, 1);
}
-
+
put_bits(&s->pb, 1 + log2_run[run_index], run_count);
if(run_index) run_index--;
run_count=0;
@@ -410,7 +410,7 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
run_count++;
}
}
-
+
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));
if(run_mode == 0)
@@ -428,7 +428,7 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
put_bits(&s->pb, 1, 1);
}
s->run_index= run_index;
-
+
return 0;
}
@@ -437,13 +437,13 @@ static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
const int ring_size= s->avctx->context_model ? 3 : 2;
int_fast16_t sample_buffer[ring_size][w+6], *sample[ring_size];
s->run_index=0;
-
+
memset(sample_buffer, 0, sizeof(sample_buffer));
-
+
for(y=0; y<h; y++){
for(i=0; i<ring_size; i++)
sample[i]= sample_buffer[(h+i-y)%ring_size]+3;
-
+
sample[0][-1]= sample[1][0 ];
sample[1][ w]= sample[1][w-1];
//{START_TIMER
@@ -460,9 +460,9 @@ static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
const int ring_size= s->avctx->context_model ? 3 : 2;
int_fast16_t sample_buffer[3][ring_size][w+6], *sample[3][ring_size];
s->run_index=0;
-
+
memset(sample_buffer, 0, sizeof(sample_buffer));
-
+
for(y=0; y<h; y++){
for(i=0; i<ring_size; i++)
for(p=0; p<3; p++)
@@ -473,13 +473,13 @@ static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
int b= v&0xFF;
int g= (v>>8)&0xFF;
int r= (v>>16)&0xFF;
-
+
b -= g;
r -= g;
g += (b + r)>>2;
b += 0x100;
r += 0x100;
-
+
// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);
sample[0][0][x]= g;
@@ -515,10 +515,10 @@ static void write_header(FFV1Context *f){
RangeCoder * const c= &f->c;
memset(state, 128, sizeof(state));
-
+
put_symbol(c, state, f->version, 0);
put_symbol(c, state, f->avctx->coder_type, 0);
- put_symbol(c, state, f->colorspace, 0); //YUV cs type
+ put_symbol(c, state, f->colorspace, 0); //YUV cs type
put_rac(c, state, 1); //chroma planes
put_symbol(c, state, f->chroma_h_shift, 0);
put_symbol(c, state, f->chroma_v_shift, 0);
@@ -534,12 +534,12 @@ static int common_init(AVCodecContext *avctx){
s->avctx= avctx;
s->flags= avctx->flags;
-
+
dsputil_init(&s->dsp, avctx);
-
+
width= s->width= avctx->width;
height= s->height= avctx->height;
-
+
assert(width && height);
return 0;
@@ -555,12 +555,12 @@ static int encode_init(AVCodecContext *avctx)
"use vstrict=-2 / -strict -2 to use it anyway\n");
return -1;
}
-
+
common_init(avctx);
-
+
s->version=0;
s->ac= avctx->coder_type;
-
+
s->plane_count=2;
for(i=0; i<256; i++){
s->quant_table[0][i]= quant11[i];
@@ -578,10 +578,10 @@ static int encode_init(AVCodecContext *avctx)
for(i=0; i<s->plane_count; i++){
PlaneContext * const p= &s->plane[i];
-
+
if(avctx->context_model==0){
p->context_count= (11*11*11+1)/2;
- }else{
+ }else{
p->context_count= (11*11*5*5*5+1)/2;
}
@@ -611,7 +611,7 @@ static int encode_init(AVCodecContext *avctx)
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
s->picture_number=0;
-
+
return 0;
}
@@ -624,7 +624,7 @@ static void clear_state(FFV1Context *f){
p->interlace_bit_state[0]= 128;
p->interlace_bit_state[1]= 128;
-
+
for(j=0; j<p->context_count; j++){
if(f->ac){
memset(p->state[j], 128, sizeof(uint8_t)*CONTEXT_SIZE);
@@ -654,7 +654,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
*p = *pict;
p->pict_type= FF_I_TYPE;
-
+
if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){
put_rac(c, &keystate, 1);
p->key_frame= 1;
@@ -670,7 +670,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
//printf("pos=%d\n", used_count);
init_put_bits(&f->pb, buf + used_count, buf_size - used_count);
}
-
+
if(f->colorspace==0){
const int chroma_width = -((-width )>>f->chroma_h_shift);
const int chroma_height= -((-height)>>f->chroma_v_shift);
@@ -683,7 +683,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
encode_rgb_frame(f, (uint32_t*)(p->data[0]), width, height, p->linesize[0]/4);
}
emms_c();
-
+
f->picture_number++;
if(f->ac){
@@ -695,7 +695,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
}
static void common_end(FFV1Context *s){
- int i;
+ int i;
for(i=0; i<s->plane_count; i++){
PlaneContext *p= &s->plane[i];
@@ -723,20 +723,20 @@ static inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], i
for(x=0; x<w; x++){
int diff, context, sign;
-
+
context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x);
if(context < 0){
context= -context;
sign=1;
}else
sign=0;
-
+
if(s->ac){
diff= get_symbol(c, p->state[context], 1);
}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)){
@@ -759,7 +759,7 @@ static inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], i
diff=0;
}else
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
-
+
// 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));
}
@@ -767,7 +767,7 @@ static inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], i
sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);
}
- s->run_index= run_index;
+ s->run_index= run_index;
}
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
@@ -776,9 +776,9 @@ static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
int_fast16_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
s->run_index=0;
-
+
memset(sample_buffer, 0, sizeof(sample_buffer));
-
+
for(y=0; y<h; y++){
int_fast16_t *temp= sample[0]; //FIXME try a normal buffer
@@ -787,7 +787,7 @@ static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
sample[1][-1]= sample[0][0 ];
sample[0][ w]= sample[0][w-1];
-
+
//{START_TIMER
decode_line(s, w, sample, plane_index, 8);
for(x=0; x<w; x++){
@@ -806,9 +806,9 @@ static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
{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
@@ -827,13 +827,13 @@ static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int st
// assert(g>=0 && b>=0 && r>=0);
// assert(g<256 && b<512 && r<512);
-
+
b -= 0x100;
r -= 0x100;
g -= (b + r)>>2;
b += g;
r += g;
-
+
src[x + stride*y]= b + (g<<8) + (r<<16);
}
}
@@ -850,7 +850,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){
int len= get_symbol(c, state, 0) + 1;
if(len + i > 128) return -1;
-
+
while(len--){
quant_table[i] = scale*v;
i++;
@@ -863,7 +863,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){
quant_table[256-i]= -quant_table[i];
}
quant_table[128]= -quant_table[127];
-
+
return 2*v - 1;
}
@@ -871,7 +871,7 @@ static int read_header(FFV1Context *f){
uint8_t state[CONTEXT_SIZE];
int i, context_count;
RangeCoder * const c= &f->c;
-
+
memset(state, 128, sizeof(state));
f->version= get_symbol(c, state, 0);
@@ -916,7 +916,7 @@ static int read_header(FFV1Context *f){
}
}
context_count= (context_count+1)/2;
-
+
for(i=0; i<f->plane_count; i++){
PlaneContext * const p= &f->plane[i];
@@ -928,7 +928,7 @@ static int read_header(FFV1Context *f){
if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
}
}
-
+
return 0;
}
@@ -937,7 +937,7 @@ static int decode_init(AVCodecContext *avctx)
// FFV1Context *s = avctx->priv_data;
common_init(avctx);
-
+
return 0;
}
@@ -973,7 +973,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
if(avctx->debug&FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
-
+
if(!f->ac){
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
@@ -982,28 +982,28 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
} 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);
}
-
+
emms_c();
f->picture_number++;
*picture= *p;
-
+
avctx->release_buffer(avctx, p); //FIXME
*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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 00:46:40 +0000