@@ -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.

@@ -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");