#define NB_COMP 3
+enum preset {
+ PRESET_NONE,
+ PRESET_COLOR_NEGATIVE,
+ PRESET_CROSS_PROCESS,
+ PRESET_DARKER,
+ PRESET_INCREASE_CONTRAST,
+ PRESET_LIGHTER,
+ PRESET_LINEAR_CONTRAST,
+ PRESET_MEDIUM_CONTRAST,
+ PRESET_NEGATIVE,
+ PRESET_STRONG_CONTRAST,
+ PRESET_VINTAGE,
+ NB_PRESETS,
+};
+
typedef struct {
const AVClass *class;
- char *preset;
+ enum preset preset;
char *comp_points_str[NB_COMP];
+ char *comp_points_str_all;
uint8_t graph[NB_COMP][256];
} CurvesContext;
{ "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 },
- { "preset", "select a color curves preset", OFFSET(preset), 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" },
+ { "darker", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_DARKER}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "increase_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_INCREASE_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "lighter", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LIGHTER}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "linear_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LINEAR_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "medium_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_MEDIUM_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_NEGATIVE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "strong_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_STRONG_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
+ { "vintage", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_VINTAGE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(curves);
static const struct {
- const char *name;
const char *r;
const char *g;
const char *b;
-} curves_presets[] = { {
- "color_negative",
+} curves_presets[] = {
+ [PRESET_COLOR_NEGATIVE] = {
"0/1 0.129/1 0.466/0.498 0.725/0 1/0",
"0/1 0.109/1 0.301/0.498 0.517/0 1/0",
"0/1 0.098/1 0.235/0.498 0.423/0 1/0",
- },{
- "cross_process",
+ },
+ [PRESET_CROSS_PROCESS] = {
"0.25/0.156 0.501/0.501 0.686/0.745",
"0.25/0.188 0.38/0.501 0.745/0.815 1/0.815",
"0.231/0.094 0.709/0.874",
- },{
- "darker", "0.5/0.4", "0.5/0.4", "0.5/0.4",
- },{
- "increase_contrast",
+ },
+ [PRESET_DARKER] = {
+ "0.5/0.4", "0.5/0.4", "0.5/0.4",
+ },
+ [PRESET_INCREASE_CONTRAST] = {
"0.149/0.066 0.831/0.905 0.905/0.98",
"0.149/0.066 0.831/0.905 0.905/0.98",
"0.149/0.066 0.831/0.905 0.905/0.98",
- },{
- "lighter", "0.4/0.5", "0.4/0.5", "0.4/0.5",
- },{
- "linear_contrast",
+ },
+ [PRESET_LIGHTER] = {
+ "0.4/0.5", "0.4/0.5", "0.4/0.5",
+ },
+ [PRESET_LINEAR_CONTRAST] = {
"0.305/0.286 0.694/0.713",
"0.305/0.286 0.694/0.713",
"0.305/0.286 0.694/0.713",
- },{
- "medium_contrast",
+ },
+ [PRESET_MEDIUM_CONTRAST] = {
"0.286/0.219 0.639/0.643",
"0.286/0.219 0.639/0.643",
"0.286/0.219 0.639/0.643",
- },{
- "negative", "0/1 1/0", "0/1 1/0", "0/1 1/0",
- },{
- "strong_contrast",
+ },
+ [PRESET_NEGATIVE] = {
+ "0/1 1/0", "0/1 1/0", "0/1 1/0",
+ },
+ [PRESET_STRONG_CONTRAST] = {
"0.301/0.196 0.592/0.6 0.686/0.737",
"0.301/0.196 0.592/0.6 0.686/0.737",
"0.301/0.196 0.592/0.6 0.686/0.737",
- },{
- "vintage",
+ },
+ [PRESET_VINTAGE] = {
"0/0.11 0.42/0.51 1/0.95",
"0.50/0.48",
"0/0.22 0.49/0.44 1/0.8",
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) {
- char **pts = curves->comp_points_str;
+ if (curves->preset != PRESET_NONE) {
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");
return AVERROR(EINVAL);
}
- for (i = 0; i < FF_ARRAY_ELEMS(curves_presets); i++) {
- if (!strcmp(curves->preset, curves_presets[i].name)) {
- pts[0] = av_strdup(curves_presets[i].r);
- pts[1] = av_strdup(curves_presets[i].g);
- pts[2] = av_strdup(curves_presets[i].b);
- if (!pts[0] || !pts[1] || !pts[2])
- return AVERROR(ENOMEM);
- break;
- }
- }
- if (i == FF_ARRAY_ELEMS(curves_presets)) {
- av_log(ctx, AV_LOG_ERROR, "Preset '%s' not found. Available presets:",
- curves->preset);
- for (i = 0; i < FF_ARRAY_ELEMS(curves_presets); i++)
- av_log(ctx, AV_LOG_ERROR, " %s", curves_presets[i].name);
- av_log(ctx, AV_LOG_ERROR, ".\n");
- return AVERROR(EINVAL);
- }
+ pts[0] = av_strdup(curves_presets[curves->preset].r);
+ pts[1] = av_strdup(curves_presets[curves->preset].g);
+ pts[2] = av_strdup(curves_presets[curves->preset].b);
+ if (!pts[0] || !pts[1] || !pts[2])
+ return AVERROR(ENOMEM);
}
for (i = 0; i < NB_COMP; i++) {
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