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framecrcenc: workaround design flaw in sidedata palette

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This should be reverted once palettes are dealt with in a endian independant way
in packets

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-30 11:44:13 +02:00
parent a0adeb1f9f
commit 147a45fca4
1 changed files with 13 additions and 4 deletions
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17
libavformat/framecrcenc.c
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@ -34,13 +34,22 @@ static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
if (pkt->flags != AV_PKT_FLAG_KEY)
av_strlcatf(buf, sizeof(buf), ", F=0x%0X", pkt->flags);
if (pkt->side_data_elems) {
int i;
int i, j;
av_strlcatf(buf, sizeof(buf), ", S=%d", pkt->side_data_elems);
for (i=0; i<pkt->side_data_elems; i++) {
uint32_t side_data_crc = av_adler32_update(0,
pkt->side_data[i].data,
pkt->side_data[i].size);
uint32_t side_data_crc = 0;
if (HAVE_BIGENDIAN && AV_PKT_DATA_PALETTE == pkt->side_data[i].type) {
for (j=0; j<pkt->side_data[i].size; j++) {
side_data_crc = av_adler32_update(side_data_crc,
pkt->side_data[i].data + (j^3),
1);
}
} else {
side_data_crc = av_adler32_update(0,
pkt->side_data[i].data,
pkt->side_data[i].size);
}
av_strlcatf(buf, sizeof(buf), ", %8d, 0x%08x", pkt->side_data[i].size, side_data_crc);
}
}