diff options
Diffstat (limited to 'libavfilter/vf_hflip.c')
| -rw-r--r-- | libavfilter/vf_hflip.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c index af0404c805..ba8e100019 100644 --- a/libavfilter/vf_hflip.c +++ b/libavfilter/vf_hflip.c @@ -80,6 +80,21 @@ static int config_props(AVFilterLink *inlink) return 0; } +static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref) +{ + AVFilterLink *outlink = inlink->dst->outputs[0]; + + outlink->out_buf = + avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h); + avfilter_copy_buffer_ref_props(outlink->out_buf, picref); + + /* copy palette if required */ + if (av_pix_fmt_descriptors[inlink->format].flags & PIX_FMT_PAL) + memcpy(inlink->dst->outputs[0]->out_buf->data[1], picref->data[1], AVPALETTE_SIZE); + + avfilter_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0)); +} + static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir) { FlipContext *flip = inlink->dst->priv; @@ -152,6 +167,7 @@ AVFilter avfilter_vf_hflip = { .inputs = (const AVFilterPad[]) {{ .name = "default", .type = AVMEDIA_TYPE_VIDEO, + .start_frame = start_frame, .draw_slice = draw_slice, .config_props = config_props, .min_perms = AV_PERM_READ, }, |