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| author | Mateusz <mateuszb@poczta.onet.pl> | 2017-12-18 04:02:25 +0100 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2017-12-18 14:48:37 +0100 |
| commit | 6260ab60a80fd8baebf79f9ce9299b0db72333b5 (patch) | |
| tree | 6aa3a99bef44d71d040e31fdd2083768f621a40c /libavfilter/vf_overlay.c | |
| parent | df3222d4bb18cbceda443def17b1b29067ed6e3f (diff) | |
| download | ffmpeg-streaming-6260ab60a80fd8baebf79f9ce9299b0db72333b5.zip ffmpeg-streaming-6260ab60a80fd8baebf79f9ce9299b0db72333b5.tar.gz | |
avfilter/vf_overlay: fix packed_rgb case
Signed-off-by: Mateusz Brzostek <mateuszb@poczta.onet.pl>
Diffstat (limited to 'libavfilter/vf_overlay.c')
| -rw-r--r-- | libavfilter/vf_overlay.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c index a7d3906..aa5835a 100644 --- a/libavfilter/vf_overlay.c +++ b/libavfilter/vf_overlay.c @@ -456,9 +456,12 @@ static av_always_inline void blend_image_packed_rgb(AVFilterContext *ctx, default: // main_value = main_value * (1 - alpha) + overlay_value * alpha // since alpha is in the range 0-255, the result must divided by 255 - d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + S[sr] * alpha) : FAST_DIV255(d[dr] * (255 - alpha) + S[sr]); - d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + S[sg] * alpha) : FAST_DIV255(d[dr] * (255 - alpha) + S[sr]); - d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + S[sb] * alpha) : FAST_DIV255(d[dr] * (255 - alpha) + S[sr]); + d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + S[sr] * alpha) : + FFMIN(FAST_DIV255(d[dr] * (255 - alpha)) + S[sr], 255); + d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + S[sg] * alpha) : + FFMIN(FAST_DIV255(d[dg] * (255 - alpha)) + S[sg], 255); + d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + S[sb] * alpha) : + FFMIN(FAST_DIV255(d[db] * (255 - alpha)) + S[sb], 255); } if (main_has_alpha) { switch (alpha) { @@ -742,22 +745,22 @@ static void blend_image_gbrap_pm(AVFilterContext *ctx, AVFrame *dst, const AVFra static void blend_image_rgb(AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y) { - blend_image_packed_rgb(ctx, dst, src, 0, x, y, 0); + blend_image_packed_rgb(ctx, dst, src, 0, x, y, 1); } static void blend_image_rgba(AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y) { - blend_image_packed_rgb(ctx, dst, src, 1, x, y, 0); + blend_image_packed_rgb(ctx, dst, src, 1, x, y, 1); } static void blend_image_rgb_pm(AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y) { - blend_image_packed_rgb(ctx, dst, src, 0, x, y, 1); + blend_image_packed_rgb(ctx, dst, src, 0, x, y, 0); } static void blend_image_rgba_pm(AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y) { - blend_image_packed_rgb(ctx, dst, src, 1, x, y, 1); + blend_image_packed_rgb(ctx, dst, src, 1, x, y, 0); } static int config_input_main(AVFilterLink *inlink) |
