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Code Issues Releases Activity

avfitler/vf_perspective: support slice threading

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2014-08-12 11:29:44 +00:00
parent 1e519b9d40
commit e3212bfd14
1 changed files with 53 additions and 18 deletions
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71
libavfilter/vf_perspective.c
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@ -47,10 +47,8 @@ typedef struct PerspectiveContext {
int hsub, vsub;
int nb_planes;
void (*perspective)(struct PerspectiveContext *s,
uint8_t *dst, int dst_linesize,
uint8_t *src, int src_linesize,
int w, int h, int hsub, int vsub);
int (*perspective)(AVFilterContext *ctx,
void *arg, int job, int nb_jobs);
} PerspectiveContext;
#define OFFSET(x) offsetof(PerspectiveContext, x)
@ -193,15 +191,34 @@ static int config_input(AVFilterLink *inlink)
return 0;
}
static void resample_cubic(PerspectiveContext *s,
uint8_t *dst, int dst_linesize,
uint8_t *src, int src_linesize,
int w, int h, int hsub, int vsub)
typedef struct ThreadData {
uint8_t *dst;
int dst_linesize;
uint8_t *src;
int src_linesize;
int w, h;
int hsub, vsub;
} ThreadData;
static int resample_cubic(AVFilterContext *ctx, void *arg,
int job, int nb_jobs)
{
PerspectiveContext *s = ctx->priv;
ThreadData *td = arg;
uint8_t *dst = td->dst;
int dst_linesize = td->dst_linesize;
uint8_t *src = td->src;
int src_linesize = td->src_linesize;
int w = td->w;
int h = td->h;
int hsub = td->hsub;
int vsub = td->vsub;
int start = (h * job) / nb_jobs;
int end = (h * (job+1)) / nb_jobs;
const int linesize = s->linesize[0];
int x, y;
for (y = 0; y < h; y++) {
for (y = start; y < end; y++) {
int sy = y << vsub;
for (x = 0; x < w; x++) {
int u, v, subU, subV, sum, sx;
@ -259,17 +276,28 @@ static void resample_cubic(PerspectiveContext *s,
dst[x + y * dst_linesize] = sum;
}
}
return 0;
}
static void resample_linear(PerspectiveContext *s,
uint8_t *dst, int dst_linesize,
uint8_t *src, int src_linesize,
int w, int h, int hsub, int vsub)
static int resample_linear(AVFilterContext *ctx, void *arg,
int job, int nb_jobs)
{
PerspectiveContext *s = ctx->priv;
ThreadData *td = arg;
uint8_t *dst = td->dst;
int dst_linesize = td->dst_linesize;
uint8_t *src = td->src;
int src_linesize = td->src_linesize;
int w = td->w;
int h = td->h;
int hsub = td->hsub;
int vsub = td->vsub;
int start = (h * job) / nb_jobs;
int end = (h * (job+1)) / nb_jobs;
const int linesize = s->linesize[0];
int x, y;
for (y = 0; y < h; y++){
for (y = start; y < end; y++){
int sy = y << vsub;
for (x = 0; x < w; x++){
int u, v, subU, subV, sum, sx, index, subUI, subVI;
@ -323,6 +351,7 @@ static void resample_linear(PerspectiveContext *s,
dst[x + y * dst_linesize] = sum;
}
}
return 0;
}
static av_cold int init(AVFilterContext *ctx)
@ -355,9 +384,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
for (plane = 0; plane < s->nb_planes; plane++) {
int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
s->perspective(s, out->data[plane], out->linesize[plane],
frame->data[plane], frame->linesize[plane],
s->linesize[plane], s->height[plane], hsub, vsub);
ThreadData td = {.dst = out->data[plane],
.dst_linesize = out->linesize[plane],
.src = frame->data[plane],
.src_linesize = frame->linesize[plane],
.w = s->linesize[plane],
.h = s->height[plane],
.hsub = hsub,
.vsub = vsub };
ctx->internal->execute(ctx, s->perspective, &td, NULL, FFMIN(td.h, ctx->graph->nb_threads));
}
av_frame_free(&frame);
@ -399,5 +434,5 @@ AVFilter ff_vf_perspective = {
.inputs = perspective_inputs,
.outputs = perspective_outputs,
.priv_class = &perspective_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
};