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avcodec/flac_parser: Use native endianness when possible

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FLAC sync codes contain a byte equal to 0xFF and so the function that
searches for sync codes first searched for this byte. It did this by
checking four bytes at once; these bytes have been read via AV_RB32, but
the test works just as well with native endianness.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2019-10-06 07:01:13 +02:00 committed by Paul B Mahol
parent 69dd8d3a2a
commit 5e546864b0
1 changed files with 1 additions and 1 deletions
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2
libavcodec/flac_parser.c
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@ -221,7 +221,7 @@ static int find_headers_search(FLACParseContext *fpc, uint8_t *buf, int buf_size
}
for (; i < buf_size - 1; i += 4) {
x = AV_RB32(buf + i);
x = AV_RN32(buf + i);
if (((x & ~(x + 0x01010101)) & 0x80808080)) {
for (j = 0; j < 4; j++) {
if ((AV_RB16(buf + i + j) & 0xFFFE) == 0xFFF8)