avfilter/vsrc_testsrc: simplify color filter commands parsing

libavfilter/vsrc_testsrc.c

@@ -83,6 +83,7 @@ typedef struct TestSourceContext {
 
 #define OFFSET(x) offsetof(TestSourceContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+#define FLAGSR AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
 
 #define SIZE_OPTIONS \
     { "size",     "set video size",     OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE, {.str = "320x240"}, 0, 0, FLAGS },\
@@ -181,8 +182,8 @@ static int request_frame(AVFilterLink *outlink)
 #if CONFIG_COLOR_FILTER
 
 static const AVOption color_options[] = {
-    { "color", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "c",     "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGS },
+    { "color", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGSR },
+    { "c",     "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGSR },
     COMMON_OPTIONS
     { NULL }
 };
@@ -236,20 +237,13 @@ static int color_process_command(AVFilterContext *ctx, const char *cmd, const ch
     TestSourceContext *test = ctx->priv;
     int ret;
 
-    if (!strcmp(cmd, "color") || !strcmp(cmd, "c")) {
-        uint8_t color_rgba[4];
-
-        ret = av_parse_color(color_rgba, args, -1, ctx);
-        if (ret < 0)
-            return ret;
-
-        memcpy(test->color_rgba, color_rgba, sizeof(color_rgba));
-        ff_draw_color(&test->draw, &test->color, test->color_rgba);
-        test->draw_once_reset = 1;
-        return 0;
-    }
+    ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
+    if (ret < 0)
+        return ret;
 
-    return AVERROR(ENOSYS);
+    ff_draw_color(&test->draw, &test->color, test->color_rgba);
+    test->draw_once_reset = 1;
+    return 0;
 }
 
 static const AVFilterPad color_outputs[] = {