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avfilter/vf_mergeplanes: make map code more verbose

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This commit is contained in:
Paul B Mahol 2022-04-05 11:25:16 +02:00
parent e5189b1382
commit f92e4636fe
1 changed files with 14 additions and 9 deletions
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23
libavfilter/vf_mergeplanes.c
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@ -27,6 +27,11 @@
#include "internal.h"
#include "framesync.h"
typedef struct Mapping {
uint8_t input;
uint8_t plane;
} Mapping;
typedef struct InputParam {
int depth[4];
int nb_planes;
@ -42,7 +47,7 @@ typedef struct MergePlanesContext {
int nb_planes;
int planewidth[4];
int planeheight[4];
int map[4][2];
Mapping map[4];
const AVPixFmtDescriptor *outdesc;
FFFrameSync fs;
@ -73,17 +78,17 @@ static av_cold int init(AVFilterContext *ctx)
s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
for (i = s->nb_planes - 1; i >= 0; i--) {
s->map[i][0] = m & 0xf;
s->map[i].plane = m & 0xf;
m >>= 4;
s->map[i][1] = m & 0xf;
s->map[i].input = m & 0xf;
m >>= 4;
if (s->map[i][0] > 3 || s->map[i][1] > 3) {
if (s->map[i].plane > 3 || s->map[i].input > 3) {
av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
return AVERROR(EINVAL);
}
s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1);
s->nb_inputs = FFMAX(s->nb_inputs, s->map[i].input + 1);
}
av_assert0(s->nb_inputs && s->nb_inputs <= 4);
@ -151,8 +156,8 @@ static int process_frame(FFFrameSync *fs)
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
for (i = 0; i < s->nb_planes; i++) {
const int input = s->map[i][1];
const int plane = s->map[i][0];
const int input = s->map[i].input;
const int plane = s->map[i].plane;
av_image_copy_plane(out->data[i], out->linesize[i],
in[input]->data[plane], in[input]->linesize[plane],
@ -231,8 +236,8 @@ static int config_output(AVFilterLink *outlink)
}
for (i = 0; i < s->nb_planes; i++) {
const int input = s->map[i][1];
const int plane = s->map[i][0];
const int input = s->map[i].input;
const int plane = s->map[i].plane;
InputParam *inputp = &inputsp[input];
if (plane + 1 > inputp->nb_planes) {