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avfilter/vf_noise: use per component rand_shift 

This allows using different shifts per plane

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-16 14:51:04 +02:00
parent aba61b22f7
commit ed3efbcd0c
1 changed files with 6 additions and 6 deletions
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12
libavfilter/vf_noise.c
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@ -51,6 +51,8 @@ typedef struct {
int seed;
int8_t *noise;
int8_t *prev_shift[MAX_RES][3];
int rand_shift[MAX_RES];
int rand_shift_init;
} FilterParams;
typedef struct {
@ -60,8 +62,6 @@ typedef struct {
int height[4];
FilterParams all;
FilterParams param[4];
int rand_shift[MAX_RES];
int rand_shift_init;
void (*line_noise)(uint8_t *dst, const uint8_t *src, const int8_t *noise, int len, int shift);
void (*line_noise_avg)(uint8_t *dst, const uint8_t *src, int len, const int8_t * const *shift);
} NoiseContext;
@ -344,7 +344,7 @@ static void noise(uint8_t *dst, const uint8_t *src,
int x;
for (x=0; x < width; x+= MAX_RES) {
int w = FFMIN(width - x, MAX_RES);
int shift = n->rand_shift[ix];
int shift = p->rand_shift[ix];
if (flags & NOISE_AVERAGED) {
n->line_noise_avg(dst + x, src + x, w, (const int8_t**)p->prev_shift[ix]);
@ -399,12 +399,12 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
for (comp = 0; comp < 4; comp++) {
FilterParams *fp = &n->param[comp];
if ((!n->rand_shift_init || (fp->flags & NOISE_TEMPORAL)) && fp->strength) {
if ((!fp->rand_shift_init || (fp->flags & NOISE_TEMPORAL)) && fp->strength) {
for (i = 0; i < MAX_RES; i++) {
n->rand_shift[i] = av_lfg_get(&fp->lfg) & (MAX_SHIFT - 1);
fp->rand_shift[i] = av_lfg_get(&fp->lfg) & (MAX_SHIFT - 1);
}
n->rand_shift_init = 1;
fp->rand_shift_init = 1;
}
}