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avformat/swfdec: Do not change the pixel format

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This is currently not supported
Fixes part of Ticket 3539

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-09-02 16:42:33 +02:00
parent 1b2390e2bc
commit c2430304df
1 changed files with 10 additions and 3 deletions
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13
libavformat/swfdec.c
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@ -289,6 +289,7 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
const int bmp_fmt = avio_r8(pb);
const int width = avio_rl16(pb);
const int height = avio_rl16(pb);
int pix_fmt;
len -= 2+1+2+2;
@ -367,7 +368,7 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
switch (bmp_fmt) {
case 3:
st->codec->pix_fmt = AV_PIX_FMT_PAL8;
pix_fmt = AV_PIX_FMT_PAL8;
for (i = 0; i < colormapsize; i++)
if (alpha_bmp) colormap[i] = buf[3]<<24 | AV_RB24(buf + 4*i);
else colormap[i] = 0xffU <<24 | AV_RB24(buf + 3*i);
@ -379,14 +380,20 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
memcpy(pal, colormap, AVPALETTE_SIZE);
break;
case 4:
st->codec->pix_fmt = AV_PIX_FMT_RGB555;
pix_fmt = AV_PIX_FMT_RGB555;
break;
case 5:
st->codec->pix_fmt = alpha_bmp ? AV_PIX_FMT_ARGB : AV_PIX_FMT_0RGB;
pix_fmt = alpha_bmp ? AV_PIX_FMT_ARGB : AV_PIX_FMT_0RGB;
break;
default:
av_assert0(0);
}
if (st->codec->pix_fmt != AV_PIX_FMT_NONE && st->codec->pix_fmt != pix_fmt) {
av_log(s, AV_LOG_ERROR, "pixel format change unsupported\n");
res = AVERROR_PATCHWELCOME;
goto bitmap_end;
}
st->codec->pix_fmt = pix_fmt;
if (linesize * height > pkt->size) {
res = AVERROR_INVALIDDATA;