On 6/2/15, Donny Yang <w...@kota.moe> wrote: > On 3 June 2015 at 03:38, Paul B Mahol <one...@gmail.com> wrote: > >> Dana 2. 6. 2015. 17:50 osoba "Donny Yang" <w...@kota.moe> napisala je: >> > >> > Signed-off-by: Donny Yang <w...@kota.moe> >> > --- >> > libavcodec/pngdec.c | 8 +++++++- >> > 1 file changed, 7 insertions(+), 1 deletion(-) >> > >> > diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c >> > index 1f5c433..1667530 100644 >> > --- a/libavcodec/pngdec.c >> > +++ b/libavcodec/pngdec.c >> > @@ -891,7 +891,8 @@ static int handle_p_frame_apng(AVCodecContext >> > *avctx, >> PNGDecContext *s, >> > return AVERROR(ENOMEM); >> > >> > if (s->blend_op == APNG_BLEND_OP_OVER && >> > - avctx->pix_fmt != AV_PIX_FMT_RGBA) { >> > + avctx->pix_fmt != AV_PIX_FMT_RGBA && >> > + avctx->pix_fmt != AV_PIX_FMT_GRAY8A) { >> > avpriv_request_sample(avctx, "Blending with pixel format %s", >> > av_get_pix_fmt_name(avctx->pix_fmt)); >> > return AVERROR_PATCHWELCOME; >> > @@ -935,6 +936,11 @@ static int handle_p_frame_apng(AVCodecContext >> *avctx, PNGDecContext *s, >> > foreground_alpha = foreground[3]; >> > background_alpha = background[3]; >> > break; >> > + >> > + case AV_PIX_FMT_GRAY8A: >> > + foreground_alpha = foreground[1]; >> > + background_alpha = background[1]; >> > + break; >> > } >> > >> > if (foreground_alpha == 0) >> > -- >> > 2.4.0 >> >> Is there actual sample? >> > > I have not actually found an apng sample using gray8a, but this is > implemented through reading the spec and firefox's source and understanding > that gray8a is treated the same as rgba, just with less bytes. > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >
ok, patch lgtm _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel