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avfilter/vf_thumbnail: add support for YUV and GBRP formats

This commit is contained in:
Paul B Mahol 2021-02-06 21:59:50 +01:00
parent cc4feff861
commit 3b65c848a6
2 changed files with 41 additions and 8 deletions
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47
libavfilter/vf_thumbnail.c
View File

@ -28,6 +28,7 @@
*/
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
@ -44,6 +45,9 @@ typedef struct ThumbContext {
int n_frames; ///< number of frames for analysis
struct thumb_frame *frames; ///< the n_frames frames
AVRational tb; ///< copy of the input timebase to ease access
int planewidth[4];
int planeheight[4];
} ThumbContext;
#define OFFSET(x) offsetof(ThumbContext, x)
@ -140,14 +144,29 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
// keep a reference of each frame
s->frames[s->n].buf = frame;
// update current frame RGB histogram
for (j = 0; j < inlink->h; j++) {
for (i = 0; i < inlink->w; i++) {
hist[0*256 + p[i*3 ]]++;
hist[1*256 + p[i*3 + 1]]++;
hist[2*256 + p[i*3 + 2]]++;
// update current frame histogram
switch (inlink->format) {
case AV_PIX_FMT_RGB24:
case AV_PIX_FMT_BGR24:
for (j = 0; j < inlink->h; j++) {
for (i = 0; i < inlink->w; i++) {
hist[0*256 + p[i*3 ]]++;
hist[1*256 + p[i*3 + 1]]++;
hist[2*256 + p[i*3 + 2]]++;
}
p += frame->linesize[0];
}
p += frame->linesize[0];
break;
default:
for (int plane = 0; plane < 3; plane++) {
const uint8_t *p = frame->data[plane];
for (j = 0; j < s->planeheight[plane]; j++) {
for (i = 0; i < s->planewidth[plane]; i++)
hist[256*plane + p[i]]++;
p += frame->linesize[plane];
}
}
break;
}
// no selection until the buffer of N frames is filled up
@ -188,8 +207,14 @@ static int config_props(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ThumbContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
s->tb = inlink->time_base;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
return 0;
}
@ -197,6 +222,14 @@ static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
AV_PIX_FMT_NONE
};
AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);

2
tests/ref/fate/filter-thumbnail
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@ -1 +1 @@
thumbnail cd429b3d92c33bcc257e8e6a3284dbf7
thumbnail 8b54dbc891b9cc05742dd0f5b74c0727