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vf_lut: use the name 's' for the pointer to the private context

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This is shorter and consistent across filters.
This commit is contained in:
Anton Khirnov 2013-03-18 20:44:36 +01:00
parent 4753f802c0
commit 8d2565c28b
1 changed files with 60 additions and 60 deletions
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120
libavfilter/vf_lut.c
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@ -104,27 +104,27 @@ static const AVOption lut_options[] = {
static av_cold 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; s->var_values[VAR_PHI] = M_PHI;
lut->var_values[VAR_PI] = M_PI; s->var_values[VAR_PI] = M_PI;
lut->var_values[VAR_E ] = M_E; s->var_values[VAR_E ] = M_E;
lut->is_rgb = !strcmp(ctx->filter->name, "lutrgb"); s->is_rgb = !strcmp(ctx->filter->name, "lutrgb");
lut->is_yuv = !strcmp(ctx->filter->name, "lutyuv"); s->is_yuv = !strcmp(ctx->filter->name, "lutyuv");
return 0; return 0;
} }
static av_cold void uninit(AVFilterContext *ctx) static av_cold void uninit(AVFilterContext *ctx)
{ {
LutContext *lut = ctx->priv; LutContext *s = ctx->priv;
int i; int i;
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
av_expr_free(lut->comp_expr[i]); av_expr_free(s->comp_expr[i]);
lut->comp_expr[i] = NULL; s->comp_expr[i] = NULL;
av_freep(&lut->comp_expr_str[i]); av_freep(&s->comp_expr_str[i]);
} }
} }
@ -146,10 +146,10 @@ static enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, AV_PIX_FM
static int query_formats(AVFilterContext *ctx) static int query_formats(AVFilterContext *ctx)
{ {
LutContext *lut = ctx->priv; LutContext *s = ctx->priv;
enum AVPixelFormat *pix_fmts = lut->is_rgb ? rgb_pix_fmts : enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
lut->is_yuv ? yuv_pix_fmts : all_pix_fmts; s->is_yuv ? yuv_pix_fmts : all_pix_fmts;
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0; return 0;
@ -160,9 +160,9 @@ static int query_formats(AVFilterContext *ctx)
*/ */
static double clip(void *opaque, double val) static double clip(void *opaque, double val)
{ {
LutContext *lut = opaque; LutContext *s = opaque;
double minval = lut->var_values[VAR_MINVAL]; double minval = s->var_values[VAR_MINVAL];
double maxval = lut->var_values[VAR_MAXVAL]; double maxval = s->var_values[VAR_MAXVAL];
return av_clip(val, minval, maxval); return av_clip(val, minval, maxval);
} }
@ -173,10 +173,10 @@ static double clip(void *opaque, double val)
*/ */
static double compute_gammaval(void *opaque, double gamma) static double compute_gammaval(void *opaque, double gamma)
{ {
LutContext *lut = opaque; LutContext *s = opaque;
double val = lut->var_values[VAR_CLIPVAL]; double val = s->var_values[VAR_CLIPVAL];
double minval = lut->var_values[VAR_MINVAL]; double minval = s->var_values[VAR_MINVAL];
double maxval = lut->var_values[VAR_MAXVAL]; double maxval = s->var_values[VAR_MAXVAL];
return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval; return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
} }
@ -196,16 +196,16 @@ static const char * const funcs1_names[] = {
static int config_props(AVFilterLink *inlink) static int config_props(AVFilterLink *inlink)
{ {
AVFilterContext *ctx = inlink->dst; AVFilterContext *ctx = inlink->dst;
LutContext *lut = ctx->priv; LutContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int min[4], max[4]; int min[4], max[4];
int val, comp, ret; int val, comp, ret;
lut->hsub = desc->log2_chroma_w; s->hsub = desc->log2_chroma_w;
lut->vsub = desc->log2_chroma_h; s->vsub = desc->log2_chroma_h;
lut->var_values[VAR_W] = inlink->w; s->var_values[VAR_W] = inlink->w;
lut->var_values[VAR_H] = inlink->h; s->var_values[VAR_H] = inlink->h;
switch (inlink->format) { switch (inlink->format) {
case AV_PIX_FMT_YUV410P: case AV_PIX_FMT_YUV410P:
@ -225,55 +225,55 @@ static int config_props(AVFilterLink *inlink)
max[0] = max[1] = max[2] = max[3] = 255; max[0] = max[1] = max[2] = max[3] = 255;
} }
lut->is_yuv = lut->is_rgb = 0; s->is_yuv = s->is_rgb = 0;
if (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) lut->is_yuv = 1; 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)) lut->is_rgb = 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) { 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_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: 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_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_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_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++) { for (comp = 0; comp < desc->nb_components; comp++) {
double res; double res;
/* create the parsed expression */ /* create the parsed expression */
ret = av_expr_parse(&lut->comp_expr[comp], lut->comp_expr_str[comp], ret = av_expr_parse(&s->comp_expr[comp], s->comp_expr_str[comp],
var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx); var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
if (ret < 0) { if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, av_log(ctx, AV_LOG_ERROR,
"Error when parsing the expression '%s' for the component %d.\n", "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); return AVERROR(EINVAL);
} }
/* compute the lut */ /* compute the s */
lut->var_values[VAR_MAXVAL] = max[comp]; s->var_values[VAR_MAXVAL] = max[comp];
lut->var_values[VAR_MINVAL] = min[comp]; s->var_values[VAR_MINVAL] = min[comp];
for (val = 0; val < 256; val++) { for (val = 0; val < 256; val++) {
lut->var_values[VAR_VAL] = val; s->var_values[VAR_VAL] = val;
lut->var_values[VAR_CLIPVAL] = av_clip(val, min[comp], max[comp]); s->var_values[VAR_CLIPVAL] = av_clip(val, min[comp], max[comp]);
lut->var_values[VAR_NEGVAL] = s->var_values[VAR_NEGVAL] =
av_clip(min[comp] + max[comp] - lut->var_values[VAR_VAL], av_clip(min[comp] + max[comp] - s->var_values[VAR_VAL],
min[comp], max[comp]); 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)) { if (isnan(res)) {
av_log(ctx, AV_LOG_ERROR, av_log(ctx, AV_LOG_ERROR,
"Error when evaluating the expression '%s' for the value %d for the component #%d.\n", "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); return AVERROR(EINVAL);
} }
lut->lut[comp][val] = av_clip((int)res, min[comp], max[comp]); 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, lut->lut[comp][val]); av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
} }
} }
@ -283,7 +283,7 @@ static int config_props(AVFilterLink *inlink)
static int filter_frame(AVFilterLink *inlink, AVFrame *in) static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{ {
AVFilterContext *ctx = inlink->dst; AVFilterContext *ctx = inlink->dst;
LutContext *lut = ctx->priv; LutContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0]; AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out; AVFrame *out;
uint8_t *inrow, *outrow, *inrow0, *outrow0; uint8_t *inrow, *outrow, *inrow0, *outrow0;
@ -296,7 +296,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
} }
av_frame_copy_props(out, in); av_frame_copy_props(out, in);
if (lut->is_rgb) { if (s->is_rgb) {
/* packed */ /* packed */
inrow0 = in ->data[0]; inrow0 = in ->data[0];
outrow0 = out->data[0]; outrow0 = out->data[0];
@ -305,10 +305,10 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
inrow = inrow0; inrow = inrow0;
outrow = outrow0; outrow = outrow0;
for (j = 0; j < inlink->w; j++) { for (j = 0; j < inlink->w; j++) {
for (k = 0; k < lut->step; k++) for (k = 0; k < s->step; k++)
outrow[k] = lut->lut[lut->rgba_map[k]][inrow[k]]; outrow[k] = s->lut[s->rgba_map[k]][inrow[k]];
outrow += lut->step; outrow += s->step;
inrow += lut->step; inrow += s->step;
} }
inrow0 += in ->linesize[0]; inrow0 += in ->linesize[0];
outrow0 += out->linesize[0]; outrow0 += out->linesize[0];
@ -316,15 +316,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
} else { } else {
/* planar */ /* planar */
for (plane = 0; plane < 4 && in->data[plane]; plane++) { for (plane = 0; plane < 4 && in->data[plane]; plane++) {
int vsub = plane == 1 || plane == 2 ? lut->vsub : 0; int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
int hsub = plane == 1 || plane == 2 ? lut->hsub : 0; int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
inrow = in ->data[plane]; inrow = in ->data[plane];
outrow = out->data[plane]; outrow = out->data[plane];
for (i = 0; i < in->height >> vsub; i ++) { for (i = 0; i < in->height >> vsub; i ++) {
for (j = 0; j < inlink->w>>hsub; j++) 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]; inrow += in ->linesize[plane];
outrow += out->linesize[plane]; outrow += out->linesize[plane];
} }
@ -388,15 +388,15 @@ static const AVOption negate_options[] = {
static av_cold int negate_init(AVFilterContext *ctx) static av_cold int negate_init(AVFilterContext *ctx)
{ {
LutContext *lut = ctx->priv; LutContext *s = ctx->priv;
int i; 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++) { 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"); "val" : "negval");
if (!lut->comp_expr_str[i]) { if (!s->comp_expr_str[i]) {
uninit(ctx); uninit(ctx);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }