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lavfi/hue: force table initialization for the first frame

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This commit is contained in:
Stefano Sabatini 2013-12-20 19:10:46 +01:00
parent b07a5e9b6b
commit 70e74e0072
1 changed files with 6 additions and 2 deletions
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8
libavfilter/vf_hue.c
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@ -73,6 +73,7 @@ typedef struct {
AVExpr *brightness_pexpr;
int hsub;
int vsub;
int is_first;
int32_t hue_sin;
int32_t hue_cos;
double var_values[VAR_NB];
@ -207,6 +208,7 @@ static av_cold int init(AVFilterContext *ctx)
"H_expr:%s h_deg_expr:%s s_expr:%s b_expr:%s\n",
hue->hue_expr, hue->hue_deg_expr, hue->saturation_expr, hue->brightness_expr);
compute_sin_and_cos(hue);
hue->is_first = 1;
return 0;
}
@ -356,10 +358,10 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
hue->var_values[VAR_T], (int)hue->var_values[VAR_N]);
compute_sin_and_cos(hue);
if (old_hue_sin != hue->hue_sin || old_hue_cos != hue->hue_cos)
if (hue->is_first || (old_hue_sin != hue->hue_sin || old_hue_cos != hue->hue_cos))
create_chrominance_lut(hue, hue->hue_cos, hue->hue_sin);
if (old_brightness != hue->brightness && hue->brightness)
if (hue->is_first || (old_brightness != hue->brightness && hue->brightness))
create_luma_lut(hue);
if (!direct) {
@ -383,6 +385,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
if (!direct)
av_frame_free(&inpic);
hue->is_first = 0;
return ff_filter_frame(outlink, outpic);
}