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avfilter/vf_eq: Support contrast from -1000 to 1000 

Fixes "-vf eq=0.05,eq=20"

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-07-15 15:38:59 +02:00
parent 51925daafd
commit c4dfb76fa7
1 changed files with 2 additions and 2 deletions
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4
libavfilter/vf_eq.c
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@ -98,7 +98,7 @@ static void check_values(EQParameters *param, EQContext *eq)
{
if (param->contrast == 1.0 && param->brightness == 0.0 && param->gamma == 1.0)
param->adjust = NULL;
else if (param->gamma == 1.0)
else if (param->gamma == 1.0 && fabs(param->contrast) < 7.9)
param->adjust = eq->process;
else
param->adjust = apply_lut;
@ -106,7 +106,7 @@ static void check_values(EQParameters *param, EQContext *eq)
static void set_contrast(EQContext *eq)
{
eq->contrast = av_clipf(av_expr_eval(eq->contrast_pexpr, eq->var_values, eq), -2.0, 2.0);
eq->contrast = av_clipf(av_expr_eval(eq->contrast_pexpr, eq->var_values, eq), -1000.0, 1000.0);
eq->param[0].contrast = eq->contrast;
eq->param[0].lut_clean = 0;
check_values(&eq->param[0], eq);