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vf_curves: add option to set all curves at once

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Reviewed-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-09 23:04:24 +02:00
parent 81c1ed748b
commit 9280fc7da1
2 changed files with 17 additions and 1 deletions
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5
doc/filters.texi
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@ -2385,6 +2385,11 @@ Set the key points for the red component.
Set the key points for the green component.
@item blue, b
Set the key points for the blue component.
@item all
Set the key points for all components.
Can be used in addition to the other key points component
options. In this case, the unset component(s) will fallback on this
@option{all} setting.
@item preset
Select one of the available color presets. This option can not be used in
addition to the @option{r}, @option{g}, @option{b} parameters.

13
libavfilter/vf_curves.c
View File

@ -52,6 +52,7 @@ typedef struct {
const AVClass *class;
enum preset preset;
char *comp_points_str[NB_COMP];
char *comp_points_str_all;
uint8_t graph[NB_COMP][256];
} CurvesContext;
@ -64,6 +65,7 @@ static const AVOption curves_options[] = {
{ "g", "set green points coordinates", OFFSET(comp_points_str[1]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "blue", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "b", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "all", "set points coordinates for all components", OFFSET(comp_points_str_all),AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "preset", "select a color curves preset", OFFSET(preset), AV_OPT_TYPE_INT, {.i64=PRESET_NONE}, PRESET_NONE, NB_PRESETS-1, FLAGS, "preset_name" },
{ "color_negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_COLOR_NEGATIVE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
{ "cross_process", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_CROSS_PROCESS}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
@ -318,9 +320,18 @@ static av_cold int init(AVFilterContext *ctx, const char *args)
int i, j, ret;
CurvesContext *curves = ctx->priv;
struct keypoint *comp_points[NB_COMP] = {0};
char **pts = curves->comp_points_str;
if (curves->comp_points_str_all) {
for (i = 0; i < NB_COMP; i++) {
if (!pts[i])
pts[i] = av_strdup(curves->comp_points_str_all);
if (!pts[i])
return AVERROR(ENOMEM);
}
}
if (curves->preset != PRESET_NONE) {
char **pts = curves->comp_points_str;
if (pts[0] || pts[1] || pts[2]) {
av_log(ctx, AV_LOG_ERROR, "It is not possible to mix a preset "
"with explicit points placements\n");