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cleanup / cosmetics 

Originally committed as revision 2001 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-07-02 16:50:20 +00:00
parent 085565f71f
commit d9ced4ca4b
1 changed files with 22 additions and 26 deletions
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48
libavcodec/ffv1.c
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@ -353,31 +353,29 @@ static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
PlaneContext * const p= &s->plane[plane_index];
CABACContext * const c= &s->c;
int x,y;
uint8_t pred_diff_buffer[4][w+6]; //FIXME rema,e
uint8_t *pred_diff[4]= {pred_diff_buffer[0]+3, pred_diff_buffer[1]+3, pred_diff_buffer[2]+3, pred_diff_buffer[3]+3};
uint8_t sample_buffer[2][w+6];
uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
int run_index=0;
memset(pred_diff_buffer, 0, sizeof(pred_diff_buffer));
memset(sample_buffer, 0, sizeof(sample_buffer));
for(y=0; y<h; y++){
uint8_t *temp= pred_diff[0]; //FIXME try a normal buffer
uint8_t *temp= sample[0]; //FIXME try a normal buffer
int run_count=0;
int run_mode=0;
pred_diff[0]= pred_diff[1];
pred_diff[1]= pred_diff[2];
pred_diff[2]= pred_diff[3];
pred_diff[3]= temp;
sample[0]= sample[1];
sample[1]= temp;
pred_diff[3][-1]= pred_diff[2][0 ];
pred_diff[2][ w]= pred_diff[2][w-1];
sample[1][-1]= sample[0][0 ];
sample[0][ w]= sample[0][w-1];
for(x=0; x<w; x++){
uint8_t *temp_src= src + x + stride*y;
int diff, context;
context= get_context(s, pred_diff[3]+x, pred_diff[2]+x, pred_diff[1]+x);
diff= temp_src[0] - predict(pred_diff[3]+x, pred_diff[2]+x);
context= get_context(s, sample[1]+x, sample[0]+x, sample[1]+x);
diff= temp_src[0] - predict(sample[1]+x, sample[0]+x);
if(context < 0){
context = -context;
@ -416,7 +414,7 @@ static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
put_vlc_symbol(&s->pb, &p->vlc_state[context], diff);
}
pred_diff[3][x]= temp_src[0];
sample[1][x]= temp_src[0];
}
if(run_mode){
while(run_count >= 1<<log2_run[run_index]){
@ -645,30 +643,28 @@ static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
PlaneContext * const p= &s->plane[plane_index];
CABACContext * const c= &s->c;
int x,y;
uint8_t pred_diff_buffer[4][w+6];
uint8_t *pred_diff[4]= {pred_diff_buffer[0]+3, pred_diff_buffer[1]+3, pred_diff_buffer[2]+3, pred_diff_buffer[3]+3};
uint8_t sample_buffer[2][w+6];
uint8_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
int run_index=0;
memset(pred_diff_buffer, 0, sizeof(pred_diff_buffer));
memset(sample_buffer, 0, sizeof(sample_buffer));
for(y=0; y<h; y++){
uint8_t *temp= pred_diff[0]; //FIXME try a normal buffer
uint8_t *temp= sample[0]; //FIXME try a normal buffer
int run_count=0;
int run_mode=0;
pred_diff[0]= pred_diff[1];
pred_diff[1]= pred_diff[2];
pred_diff[2]= pred_diff[3];
pred_diff[3]= temp;
sample[0]= sample[1];
sample[1]= temp;
pred_diff[3][-1]= pred_diff[2][0 ];
pred_diff[2][ w]= pred_diff[2][w-1];
sample[1][-1]= sample[0][0 ];
sample[0][ w]= sample[0][w-1];
for(x=0; x<w; x++){
uint8_t *temp_src= src + x + stride*y;
int diff, context, sign;
context= get_context(s, pred_diff[3] + x, pred_diff[2] + x, pred_diff[1] + x);
context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x);
if(context < 0){
context= -context;
sign=1;
@ -709,8 +705,8 @@ static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride,
if(sign) diff= (int8_t)(-diff); //FIXME remove cast
pred_diff[3][x]=
temp_src[0] = predict(pred_diff[3] + x, pred_diff[2] + x) + diff;
sample[1][x]=
temp_src[0] = predict(sample[1] + x, sample[0] + x) + diff;
assert(diff>= -128 && diff <= 127);
}