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avfilter/vf_mix: add fast filtering in case all tmix weights are same

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This commit is contained in:
Paul B Mahol 2023-06-02 01:08:56 +02:00
parent da23151eaf
commit 9a9b56c870
1 changed files with 73 additions and 2 deletions
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75
libavfilter/vf_mix.c
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@ -43,8 +43,10 @@ typedef struct MixContext {
float scale;
float wfactor;
int fast;
int tmix;
int nb_frames;
int nb_unique_frames;
int depth;
int max;
@ -53,6 +55,8 @@ typedef struct MixContext {
int linesizes[4];
int height[4];
uint8_t *sum[4];
uint8_t **data;
int *linesize;
@ -81,6 +85,7 @@ static int parse_weights(AVFilterContext *ctx)
char *p, *arg, *saveptr = NULL;
int i, last = 0;
s->fast = 1;
s->wfactor = 0.f;
p = s->weights_str;
for (i = 0; i < s->nb_inputs; i++) {
@ -93,6 +98,8 @@ static int parse_weights(AVFilterContext *ctx)
return AVERROR(EINVAL);
}
s->wfactor += s->weights[i];
if (i > 0)
s->fast &= s->weights[i] == s->weights[0];
last = i;
}
@ -103,6 +110,8 @@ static int parse_weights(AVFilterContext *ctx)
if (s->scale == 0) {
s->wfactor = 1 / s->wfactor;
} else {
if (s->scale != 1.f / s->wfactor)
s->fast = 0;
s->wfactor = s->scale;
}
@ -145,13 +154,52 @@ typedef struct ThreadData {
AVFrame **in, *out;
} ThreadData;
#define FAST_TMIX_SLICE(type, stype, round) \
for (int p = 0; p < s->nb_planes; p++) { \
const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
const int width = s->linesizes[p] / sizeof(type); \
stype *sum = (stype *)(s->sum[p] + slice_start * s->linesizes[p] * 2); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
const ptrdiff_t sum_linesize = (s->linesizes[p] * 2) / sizeof(stype); \
const ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
const int idx = FFMAX(0, nb_inputs - nb_unique); \
const ptrdiff_t src_linesize[2] = { in[idx]->linesize[p], \
in[nb_inputs-1]->linesize[p] }; \
const type *src[2]; \
\
if (!((1 << p) & s->planes)) { \
av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
in[0]->data[p] + slice_start * in[0]->linesize[p], \
in[0]->linesize[p], \
s->linesizes[p], slice_end - slice_start); \
continue; \
} \
\
src[0] = (const type *)(in[idx]->data[p] + slice_start*src_linesize[0]); \
src[1] = (const type *)(in[nb_inputs-1]->data[p] + slice_start * src_linesize[1]); \
\
for (int y = slice_start; y < slice_end; y++) { \
for (int x = 0; x < width; x++) { \
sum[x] += src[1][x] * (1 + (nb_inputs - 1) * (idx == (nb_inputs - 1))); \
dst[x] = (sum[x] + (round)) / nb_inputs; \
sum[x] -= src[0][x]; \
} \
\
dst += dst_linesize; \
sum += sum_linesize; \
src[0] += src_linesize[0] / sizeof(type); \
src[1] += src_linesize[1] / sizeof(type); \
} \
}
#define MIX_SLICE(type, fun, clip) \
for (int p = 0; p < s->nb_planes; p++) { \
const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
const int width = s->linesizes[p] / sizeof(type); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
const ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
\
if (!((1 << p) & s->planes)) { \
av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
@ -200,10 +248,23 @@ static int mix_frames(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
const float *weights = s->weights;
uint8_t **srcf = s->data + jobnr * s->nb_inputs;
int *linesize = s->linesize + jobnr * s->nb_inputs;
const int nb_unique = s->nb_unique_frames;
const int nb_inputs = s->nb_inputs;
const float wfactor = s->wfactor;
const int max = s->max;
if (s->tmix && s->fast) {
if (s->depth <= 8) {
FAST_TMIX_SLICE(uint8_t, uint16_t, nb_inputs >> 1)
} else if (s->depth <= 16) {
FAST_TMIX_SLICE(uint16_t, uint32_t, nb_inputs >> 1)
} else {
FAST_TMIX_SLICE(float, float, 0.f)
}
return 0;
}
if (s->depth <= 8) {
MIX_SLICE(uint8_t, lrintf, CLIP8)
} else if (s->depth <= 16) {
@ -294,8 +355,14 @@ static int config_output(AVFilterLink *outlink)
if (!s->linesize)
return AVERROR(ENOMEM);
if (s->tmix)
if (s->tmix) {
for (int p = 0; p < s->nb_planes; p++) {
s->sum[p] = av_calloc(s->linesizes[p], s->height[p] * sizeof(*s->sum) * 2);
if (!s->sum[p])
return AVERROR(ENOMEM);
}
return 0;
}
outlink->w = width;
outlink->h = height;
@ -335,6 +402,8 @@ static av_cold void uninit(AVFilterContext *ctx)
av_freep(&s->linesize);
if (s->tmix) {
for (i = 0; i < 4; i++)
av_freep(&s->sum[i]);
for (i = 0; i < s->nb_frames && s->frames; i++)
av_frame_free(&s->frames[i]);
}
@ -418,6 +487,7 @@ static int tmix_filter_frame(AVFilterLink *inlink, AVFrame *in)
if (s->nb_frames < s->nb_inputs) {
s->frames[s->nb_frames] = in;
s->nb_frames++;
s->nb_unique_frames++;
while (s->nb_frames < s->nb_inputs) {
s->frames[s->nb_frames] = av_frame_clone(s->frames[s->nb_frames - 1]);
if (!s->frames[s->nb_frames])
@ -425,6 +495,7 @@ static int tmix_filter_frame(AVFilterLink *inlink, AVFrame *in)
s->nb_frames++;
}
} else {
s->nb_unique_frames = FFMIN(s->nb_unique_frames + 1, s->nb_inputs);
av_frame_free(&s->frames[0]);
memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
s->frames[s->nb_inputs - 1] = in;