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https://github.com/FFmpeg/FFmpeg.git
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avfilter/vf_ssim: add slice threading
This commit is contained in:
Paul B Mahol
parent
680ba23bc2
commit
c2ca1eb2a7
@ -51,6 +51,7 @@ typedef struct SSIMContext {
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FILE *stats_file;
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char *stats_file_str;
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int nb_components;
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int nb_threads;
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int max;
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uint64_t nb_frames;
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double ssim[4], ssim_total;
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@ -59,13 +60,11 @@ typedef struct SSIMContext {
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uint8_t rgba_map[4];
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int planewidth[4];
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int planeheight[4];
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int *temp;
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int **temp;
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int is_rgb;
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double (*ssim_plane)(SSIMDSPContext *dsp,
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uint8_t *main, int main_stride,
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uint8_t *ref, int ref_stride,
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int width, int height, void *temp,
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int max);
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double **score;
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int (*ssim_plane)(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs);
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SSIMDSPContext dsp;
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} SSIMContext;
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@ -221,60 +220,104 @@ static double ssim_endn_8bit(const int (*sum0)[4], const int (*sum1)[4], int wid
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#define SUM_LEN(w) (((w) >> 2) + 3)
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static double ssim_plane_16bit(SSIMDSPContext *dsp,
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uint8_t *main, int main_stride,
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uint8_t *ref, int ref_stride,
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int width, int height, void *temp,
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int max)
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typedef struct ThreadData {
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const uint8_t *main_data[4];
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const uint8_t *ref_data[4];
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int main_linesize[4];
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int ref_linesize[4];
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int planewidth[4];
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int planeheight[4];
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double **score;
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int **temp;
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int nb_components;
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int max;
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SSIMDSPContext *dsp;
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} ThreadData;
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static int ssim_plane_16bit(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs)
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{
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int z = 0, y;
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double ssim = 0.0;
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int64_t (*sum0)[4] = temp;
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int64_t (*sum1)[4] = sum0 + SUM_LEN(width);
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ThreadData *td = arg;
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double *score = td->score[jobnr];
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void *temp = td->temp[jobnr];
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const int max = td->max;
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width >>= 2;
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height >>= 2;
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for (int c = 0; c < td->nb_components; c++) {
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const uint8_t *main = td->main_data[c];
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const uint8_t *ref = td->ref_data[c];
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const int main_stride = td->main_linesize[c];
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const int ref_stride = td->ref_linesize[c];
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int width = td->planewidth[c];
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int height = td->planeheight[c];
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const int slice_start = ((height >> 2) * jobnr) / nb_jobs;
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const int slice_end = ((height >> 2) * (jobnr+1)) / nb_jobs;
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const int ystart = FFMAX(1, slice_start);
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int z = ystart - 1;
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double ssim = 0.0;
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int64_t (*sum0)[4] = temp;
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int64_t (*sum1)[4] = sum0 + SUM_LEN(width);
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for (y = 1; y < height; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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ssim_4x4xn_16bit(&main[4 * z * main_stride], main_stride,
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&ref[4 * z * ref_stride], ref_stride,
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sum0, width);
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width >>= 2;
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height >>= 2;
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for (int y = ystart; y < slice_end; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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ssim_4x4xn_16bit(&main[4 * z * main_stride], main_stride,
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&ref[4 * z * ref_stride], ref_stride,
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sum0, width);
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}
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ssim += ssim_endn_16bit((const int64_t (*)[4])sum0, (const int64_t (*)[4])sum1, width - 1, max);
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}
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ssim += ssim_endn_16bit((const int64_t (*)[4])sum0, (const int64_t (*)[4])sum1, width - 1, max);
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score[c] = ssim;
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}
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return ssim / ((height - 1) * (width - 1));
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return 0;
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}
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static double ssim_plane(SSIMDSPContext *dsp,
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uint8_t *main, int main_stride,
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uint8_t *ref, int ref_stride,
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int width, int height, void *temp,
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int max)
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static int ssim_plane(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs)
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{
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int z = 0, y;
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double ssim = 0.0;
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int (*sum0)[4] = temp;
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int (*sum1)[4] = sum0 + SUM_LEN(width);
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ThreadData *td = arg;
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double *score = td->score[jobnr];
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void *temp = td->temp[jobnr];
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SSIMDSPContext *dsp = td->dsp;
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width >>= 2;
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height >>= 2;
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for (int c = 0; c < td->nb_components; c++) {
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const uint8_t *main = td->main_data[c];
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const uint8_t *ref = td->ref_data[c];
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const int main_stride = td->main_linesize[c];
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const int ref_stride = td->ref_linesize[c];
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int width = td->planewidth[c];
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int height = td->planeheight[c];
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const int slice_start = ((height >> 2) * jobnr) / nb_jobs;
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const int slice_end = ((height >> 2) * (jobnr+1)) / nb_jobs;
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const int ystart = FFMAX(1, slice_start);
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int z = ystart - 1;
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double ssim = 0.0;
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int (*sum0)[4] = temp;
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int (*sum1)[4] = sum0 + SUM_LEN(width);
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for (y = 1; y < height; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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dsp->ssim_4x4_line(&main[4 * z * main_stride], main_stride,
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&ref[4 * z * ref_stride], ref_stride,
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sum0, width);
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width >>= 2;
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height >>= 2;
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for (int y = ystart; y < slice_end; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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dsp->ssim_4x4_line(&main[4 * z * main_stride], main_stride,
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&ref[4 * z * ref_stride], ref_stride,
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sum0, width);
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}
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ssim += dsp->ssim_end_line((const int (*)[4])sum0, (const int (*)[4])sum1, width - 1);
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}
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ssim += dsp->ssim_end_line((const int (*)[4])sum0, (const int (*)[4])sum1, width - 1);
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score[c] = ssim;
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}
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return ssim / ((height - 1) * (width - 1));
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return 0;
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}
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static double ssim_db(double ssim, double weight)
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@ -288,7 +331,8 @@ static int do_ssim(FFFrameSync *fs)
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SSIMContext *s = ctx->priv;
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AVFrame *master, *ref;
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AVDictionary **metadata;
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double c[4] = { 0 }, ssimv = 0.0;
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double c[4] = {0}, ssimv = 0.0;
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ThreadData td;
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int ret, i;
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ret = ff_framesync_dualinput_get(fs, &master, &ref);
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@ -300,14 +344,34 @@ static int do_ssim(FFFrameSync *fs)
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s->nb_frames++;
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td.nb_components = s->nb_components;
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td.dsp = &s->dsp;
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td.score = s->score;
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td.temp = s->temp;
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td.max = s->max;
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for (int n = 0; n < s->nb_components; n++) {
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td.main_data[n] = master->data[n];
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td.ref_data[n] = ref->data[n];
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td.main_linesize[n] = master->linesize[n];
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td.ref_linesize[n] = ref->linesize[n];
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td.planewidth[n] = s->planewidth[n];
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td.planeheight[n] = s->planeheight[n];
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}
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ctx->internal->execute(ctx, s->ssim_plane, &td, NULL, FFMIN((s->planeheight[1] + 3) >> 2, s->nb_threads));
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for (i = 0; i < s->nb_components; i++) {
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for (int j = 0; j < s->nb_threads; j++)
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c[i] += s->score[j][i];
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c[i] = c[i] / (((s->planewidth[i] >> 2) - 1) * ((s->planeheight[i] >> 2) - 1));
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}
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for (i = 0; i < s->nb_components; i++) {
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c[i] = s->ssim_plane(&s->dsp, master->data[i], master->linesize[i],
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ref->data[i], ref->linesize[i],
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s->planewidth[i], s->planeheight[i], s->temp,
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s->max);
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ssimv += s->coefs[i] * c[i];
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s->ssim[i] += c[i];
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}
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for (i = 0; i < s->nb_components; i++) {
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int cidx = s->is_rgb ? s->rgba_map[i] : i;
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set_meta(metadata, "lavfi.ssim.", s->comps[i], c[cidx]);
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@ -383,6 +447,7 @@ static int config_input_ref(AVFilterLink *inlink)
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SSIMContext *s = ctx->priv;
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int sum = 0, i;
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s->nb_threads = ff_filter_get_nb_threads(ctx);
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s->nb_components = desc->nb_components;
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if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
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@ -410,9 +475,15 @@ static int config_input_ref(AVFilterLink *inlink)
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for (i = 0; i < s->nb_components; i++)
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s->coefs[i] = (double) s->planeheight[i] * s->planewidth[i] / sum;
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s->temp = av_mallocz_array(2 * SUM_LEN(inlink->w), (desc->comp[0].depth > 8) ? sizeof(int64_t[4]) : sizeof(int[4]));
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s->temp = av_calloc(s->nb_threads, sizeof(*s->temp));
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if (!s->temp)
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return AVERROR(ENOMEM);
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for (int t = 0; t < s->nb_threads; t++) {
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s->temp[t] = av_mallocz_array(2 * SUM_LEN(inlink->w), (desc->comp[0].depth > 8) ? sizeof(int64_t[4]) : sizeof(int[4]));
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if (!s->temp[t])
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return AVERROR(ENOMEM);
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}
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s->max = (1 << desc->comp[0].depth) - 1;
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s->ssim_plane = desc->comp[0].depth > 8 ? ssim_plane_16bit : ssim_plane;
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@ -421,6 +492,16 @@ static int config_input_ref(AVFilterLink *inlink)
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if (ARCH_X86)
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ff_ssim_init_x86(&s->dsp);
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s->score = av_calloc(s->nb_threads, sizeof(*s->score));
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if (!s->score)
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return AVERROR(ENOMEM);
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for (int t = 0; t < s->nb_threads && s->score; t++) {
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s->score[t] = av_calloc(s->nb_components, sizeof(*s->score[0]));
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if (!s->score[t])
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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@ -482,6 +563,12 @@ static av_cold void uninit(AVFilterContext *ctx)
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if (s->stats_file && s->stats_file != stdout)
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fclose(s->stats_file);
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for (int t = 0; t < s->nb_threads && s->score; t++)
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av_freep(&s->score[t]);
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av_freep(&s->score);
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for (int t = 0; t < s->nb_threads && s->temp; t++)
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av_freep(&s->temp[t]);
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av_freep(&s->temp);
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}
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@ -518,5 +605,5 @@ AVFilter ff_vf_ssim = {
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.priv_class = &ssim_class,
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.inputs = ssim_inputs,
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.outputs = ssim_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
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};
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