* value, and apply it to input video.
*/
+#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
VAR_VARS_NB
};
-typedef struct {
+typedef struct LutContext {
const AVClass *class;
uint8_t lut[4][256]; ///< lookup table for each component
char *comp_expr_str[4];
{ NULL },
};
-static int init(AVFilterContext *ctx)
+static av_cold int init(AVFilterContext *ctx)
{
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
- lut->var_values[VAR_PHI] = M_PHI;
- lut->var_values[VAR_PI] = M_PI;
- lut->var_values[VAR_E ] = M_E;
+ s->var_values[VAR_PHI] = M_PHI;
+ s->var_values[VAR_PI] = M_PI;
+ s->var_values[VAR_E ] = M_E;
- lut->is_rgb = !strcmp(ctx->filter->name, "lutrgb");
- lut->is_yuv = !strcmp(ctx->filter->name, "lutyuv");
+ s->is_rgb = !strcmp(ctx->filter->name, "lutrgb");
+ s->is_yuv = !strcmp(ctx->filter->name, "lutyuv");
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
int i;
for (i = 0; i < 4; i++) {
- av_expr_free(lut->comp_expr[i]);
- lut->comp_expr[i] = NULL;
- av_freep(&lut->comp_expr_str[i]);
+ av_expr_free(s->comp_expr[i]);
+ s->comp_expr[i] = NULL;
+ av_freep(&s->comp_expr_str[i]);
}
}
AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, \
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24
-static enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS, AV_PIX_FMT_NONE };
-static enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS, AV_PIX_FMT_NONE };
-static enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, AV_PIX_FMT_NONE };
+static const enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS, AV_PIX_FMT_NONE };
+static const enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS, AV_PIX_FMT_NONE };
+static const enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, AV_PIX_FMT_NONE };
static int query_formats(AVFilterContext *ctx)
{
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
- enum AVPixelFormat *pix_fmts = lut->is_rgb ? rgb_pix_fmts :
- lut->is_yuv ? yuv_pix_fmts : all_pix_fmts;
+ const enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
+ s->is_yuv ? yuv_pix_fmts :
+ all_pix_fmts;
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
*/
static double clip(void *opaque, double val)
{
- LutContext *lut = opaque;
- double minval = lut->var_values[VAR_MINVAL];
- double maxval = lut->var_values[VAR_MAXVAL];
+ LutContext *s = opaque;
+ double minval = s->var_values[VAR_MINVAL];
+ double maxval = s->var_values[VAR_MAXVAL];
return av_clip(val, minval, maxval);
}
*/
static double compute_gammaval(void *opaque, double gamma)
{
- LutContext *lut = opaque;
- double val = lut->var_values[VAR_CLIPVAL];
- double minval = lut->var_values[VAR_MINVAL];
- double maxval = lut->var_values[VAR_MAXVAL];
+ LutContext *s = opaque;
+ double val = s->var_values[VAR_CLIPVAL];
+ double minval = s->var_values[VAR_MINVAL];
+ double maxval = s->var_values[VAR_MAXVAL];
return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
}
static int config_props(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int min[4], max[4];
int val, comp, ret;
- lut->hsub = desc->log2_chroma_w;
- lut->vsub = desc->log2_chroma_h;
+ s->hsub = desc->log2_chroma_w;
+ s->vsub = desc->log2_chroma_h;
- lut->var_values[VAR_W] = inlink->w;
- lut->var_values[VAR_H] = inlink->h;
+ s->var_values[VAR_W] = inlink->w;
+ s->var_values[VAR_H] = inlink->h;
switch (inlink->format) {
case AV_PIX_FMT_YUV410P:
max[0] = max[1] = max[2] = max[3] = 255;
}
- lut->is_yuv = lut->is_rgb = 0;
- if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) lut->is_yuv = 1;
- else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) lut->is_rgb = 1;
+ s->is_yuv = s->is_rgb = 0;
+ if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) s->is_yuv = 1;
+ else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) s->is_rgb = 1;
- if (lut->is_rgb) {
+ if (s->is_rgb) {
switch (inlink->format) {
- case AV_PIX_FMT_ARGB: lut->rgba_map[A] = 0; lut->rgba_map[R] = 1; lut->rgba_map[G] = 2; lut->rgba_map[B] = 3; break;
- case AV_PIX_FMT_ABGR: lut->rgba_map[A] = 0; lut->rgba_map[B] = 1; lut->rgba_map[G] = 2; lut->rgba_map[R] = 3; break;
+ case AV_PIX_FMT_ARGB: s->rgba_map[A] = 0; s->rgba_map[R] = 1; s->rgba_map[G] = 2; s->rgba_map[B] = 3; break;
+ case AV_PIX_FMT_ABGR: s->rgba_map[A] = 0; s->rgba_map[B] = 1; s->rgba_map[G] = 2; s->rgba_map[R] = 3; break;
case AV_PIX_FMT_RGBA:
- case AV_PIX_FMT_RGB24: lut->rgba_map[R] = 0; lut->rgba_map[G] = 1; lut->rgba_map[B] = 2; lut->rgba_map[A] = 3; break;
+ case AV_PIX_FMT_RGB24: s->rgba_map[R] = 0; s->rgba_map[G] = 1; s->rgba_map[B] = 2; s->rgba_map[A] = 3; break;
case AV_PIX_FMT_BGRA:
- case AV_PIX_FMT_BGR24: lut->rgba_map[B] = 0; lut->rgba_map[G] = 1; lut->rgba_map[R] = 2; lut->rgba_map[A] = 3; break;
+ case AV_PIX_FMT_BGR24: s->rgba_map[B] = 0; s->rgba_map[G] = 1; s->rgba_map[R] = 2; s->rgba_map[A] = 3; break;
}
- lut->step = av_get_bits_per_pixel(desc) >> 3;
+ s->step = av_get_bits_per_pixel(desc) >> 3;
}
for (comp = 0; comp < desc->nb_components; comp++) {
double res;
/* create the parsed expression */
- ret = av_expr_parse(&lut->comp_expr[comp], lut->comp_expr_str[comp],
+ av_expr_free(s->comp_expr[comp]);
+ s->comp_expr[comp] = NULL;
+ ret = av_expr_parse(&s->comp_expr[comp], s->comp_expr_str[comp],
var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR,
"Error when parsing the expression '%s' for the component %d.\n",
- lut->comp_expr_str[comp], comp);
+ s->comp_expr_str[comp], comp);
return AVERROR(EINVAL);
}
- /* compute the lut */
- lut->var_values[VAR_MAXVAL] = max[comp];
- lut->var_values[VAR_MINVAL] = min[comp];
+ /* compute the s */
+ s->var_values[VAR_MAXVAL] = max[comp];
+ s->var_values[VAR_MINVAL] = min[comp];
for (val = 0; val < 256; val++) {
- lut->var_values[VAR_VAL] = val;
- lut->var_values[VAR_CLIPVAL] = av_clip(val, min[comp], max[comp]);
- lut->var_values[VAR_NEGVAL] =
- av_clip(min[comp] + max[comp] - lut->var_values[VAR_VAL],
+ s->var_values[VAR_VAL] = val;
+ s->var_values[VAR_CLIPVAL] = av_clip(val, min[comp], max[comp]);
+ s->var_values[VAR_NEGVAL] =
+ av_clip(min[comp] + max[comp] - s->var_values[VAR_VAL],
min[comp], max[comp]);
- res = av_expr_eval(lut->comp_expr[comp], lut->var_values, lut);
+ res = av_expr_eval(s->comp_expr[comp], s->var_values, s);
if (isnan(res)) {
av_log(ctx, AV_LOG_ERROR,
"Error when evaluating the expression '%s' for the value %d for the component #%d.\n",
- lut->comp_expr_str[comp], val, comp);
+ s->comp_expr_str[comp], val, comp);
return AVERROR(EINVAL);
}
- lut->lut[comp][val] = av_clip((int)res, min[comp], max[comp]);
- av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, lut->lut[comp][val]);
+ s->lut[comp][val] = av_clip((int)res, min[comp], max[comp]);
+ av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
uint8_t *inrow, *outrow, *inrow0, *outrow0;
}
av_frame_copy_props(out, in);
- if (lut->is_rgb) {
+ if (s->is_rgb) {
/* packed */
inrow0 = in ->data[0];
outrow0 = out->data[0];
inrow = inrow0;
outrow = outrow0;
for (j = 0; j < inlink->w; j++) {
- for (k = 0; k < lut->step; k++)
- outrow[k] = lut->lut[lut->rgba_map[k]][inrow[k]];
- outrow += lut->step;
- inrow += lut->step;
+ for (k = 0; k < s->step; k++)
+ outrow[k] = s->lut[s->rgba_map[k]][inrow[k]];
+ outrow += s->step;
+ inrow += s->step;
}
inrow0 += in ->linesize[0];
outrow0 += out->linesize[0];
} else {
/* planar */
for (plane = 0; plane < 4 && in->data[plane]; plane++) {
- int vsub = plane == 1 || plane == 2 ? lut->vsub : 0;
- int hsub = plane == 1 || plane == 2 ? lut->hsub : 0;
+ int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
+ int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
inrow = in ->data[plane];
outrow = out->data[plane];
for (i = 0; i < in->height >> vsub; i ++) {
for (j = 0; j < inlink->w>>hsub; j++)
- outrow[j] = lut->lut[plane][inrow[j]];
+ outrow[j] = s->lut[plane][inrow[j]];
inrow += in ->linesize[plane];
outrow += out->linesize[plane];
}
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
}; \
- AVFilter avfilter_vf_##name_ = { \
+ AVFilter ff_vf_##name_ = { \
.name = #name_, \
.description = NULL_IF_CONFIG_SMALL(description_), \
.priv_size = sizeof(LutContext), \
{ NULL },
};
-static int negate_init(AVFilterContext *ctx)
+static av_cold int negate_init(AVFilterContext *ctx)
{
- LutContext *lut = ctx->priv;
+ LutContext *s = ctx->priv;
int i;
- av_log(ctx, AV_LOG_DEBUG, "negate_alpha:%d\n", lut->negate_alpha);
+ av_log(ctx, AV_LOG_DEBUG, "negate_alpha:%d\n", s->negate_alpha);
for (i = 0; i < 4; i++) {
- lut->comp_expr_str[i] = av_strdup((i == 3 && lut->negate_alpha) ?
+ s->comp_expr_str[i] = av_strdup((i == 3 && s->negate_alpha) ?
"val" : "negval");
- if (!lut->comp_expr_str[i]) {
+ if (!s->comp_expr_str[i]) {
uninit(ctx);
return AVERROR(ENOMEM);
}