On Wed, May 22, 2019 at 12:24 PM Li, Zhong <zhong...@intel.com> wrote: > > > From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf > > Of Jun Zhao > > Sent: Tuesday, May 21, 2019 7:21 PM > > To: ffmpeg-devel@ffmpeg.org > > Cc: Jun Zhao <barryjz...@tencent.com> > > Subject: [FFmpeg-devel] [PATCH V2] lavfi/colorlevels: Add slice threading > > support > > > > From: Jun Zhao <barryjz...@tencent.com> > > > > Add slice threading support, use the command like: > > > > ./ffmpeg -i input -vf colorlevel with 1080p h264 clip, the fps from 39 fps > > to > > 79 fps in the local > > > > Signed-off-by: Jun Zhao <barryjz...@tencent.com> > > --- > > libavfilter/vf_colorlevels.c | 125 > > +++++++++++++++++++++++++++++++++++------ > > 1 files changed, 106 insertions(+), 19 deletions(-) > > > > diff --git a/libavfilter/vf_colorlevels.c b/libavfilter/vf_colorlevels.c > > index > > 5385a5e..68668e7 100644 > > --- a/libavfilter/vf_colorlevels.c > > +++ b/libavfilter/vf_colorlevels.c > > @@ -105,6 +105,83 @@ static int config_input(AVFilterLink *inlink) > > return 0; > > } > > > > +struct thread_data { > > + const uint8_t *srcrow; > > + uint8_t *dstrow; > > + int dst_linesize; > > + int src_linesize; > > + > > + double coeff; > > + uint8_t offset; > > + > > + int h; > > + > > + int imin; > > + int omin; > > +}; > > + > > +static int colorlevel_slice_8(AVFilterContext *ctx, void *arg, int > > +jobnr, int nb_jobs) { > > + ColorLevelsContext *s = ctx->priv; > > + const struct thread_data *td = arg; > > + > > + int process_h = td->h; > > + const int slice_start = (process_h * jobnr ) / nb_jobs; > > + const int slice_end = (process_h * (jobnr+1)) / nb_jobs; > > + int x, y; > > + const uint8_t *srcrow = td->srcrow; > > + uint8_t *dstrow = td->dstrow; > > + const int step = s->step; > > + const uint8_t offset = td->offset; > > + > > + int imin = td->imin; > > + int omin = td->omin; > > + double coeff = td->coeff; > > + > > + for (y = slice_start; y < slice_end; y++) { > > + const uint8_t *src = srcrow; > > + uint8_t *dst = dstrow; > > + > > + for (x = 0; x < s->linesize; x += step) > > + dst[x + offset] = av_clip_uint8((src[x + offset] - imin) * > > coeff > > + omin); > > + dstrow += td->dst_linesize; > > + srcrow += td->src_linesize; > > + } > > + > > + return 0; > > +} > > + > > +static int colorlevel_slice_16(AVFilterContext *ctx, void *arg, int > > +jobnr, int nb_jobs) { > > + ColorLevelsContext *s = ctx->priv; > > + const struct thread_data *td = arg; > > + > > + int process_h = td->h; > > + const int slice_start = (process_h * jobnr ) / nb_jobs; > > + const int slice_end = (process_h * (jobnr+1)) / nb_jobs; > > + int x, y; > > + const uint8_t *srcrow = td->srcrow; > > + uint8_t *dstrow = td->dstrow; > > + const int step = s->step; > > + const uint8_t offset = td->offset; > > + > > + int imin = td->imin; > > + int omin = td->omin; > > + double coeff = td->coeff; > > + > > + for (y = slice_start; y < slice_end; y++) { > > + const uint16_t *src = (const uint16_t *)srcrow; > > + uint16_t *dst = (uint16_t *)dstrow; > > Function colorlevel_slice_16() is same as colorlevel_slice_8 expect here to > replace unit8_t to be unit16t. > Would better to define a template function to be reused. I don't like to get in C to templates is some ugly macro code for function overloading, this is the reason use 2 function for 8bits/16bits _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
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