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Code Issues Releases Activity

avformat/brstm: Simplify cleanup after read_header failure

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by setting the FF_FMT_INIT_CLEANUP flag.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2020-03-21 18:31:06 +01:00
parent 1500b7dfa5
commit b10668dd61
1 changed files with 15 additions and 29 deletions
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44
libavformat/brstm.c
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@ -104,7 +104,6 @@ static int read_header(AVFormatContext *s)
int64_t h1offset, pos, toffset;
uint32_t size, asize, start = 0;
AVStream *st;
int ret = AVERROR_EOF;
int loop = 0;
int bfstm = !strcmp("bfstm", s->iformat->name);
@ -288,30 +287,24 @@ static int read_header(AVFormatContext *s)
if (!bfstm)
avio_skip(s->pb, pos + 16LL + b->offsets[ch].offset - avio_tell(s->pb));
if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (avio_read(s->pb, b->table + ch * 32, 32) != 32)
return AVERROR_INVALIDDATA;
if (bfstm)
avio_skip(s->pb, 14);
}
}
if (size < (avio_tell(s->pb) - pos)) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (size < (avio_tell(s->pb) - pos))
return AVERROR_INVALIDDATA;
avio_skip(s->pb, size - (avio_tell(s->pb) - pos));
while (!avio_feof(s->pb)) {
chunk = avio_rl32(s->pb);
size = read32(s);
if (size < 8) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (size < 8)
return AVERROR_INVALIDDATA;
size -= 8;
switch (chunk) {
case MKTAG('S','E','E','K'):
@ -321,19 +314,15 @@ static int read_header(AVFormatContext *s)
goto skip;
asize = b->block_count * st->codecpar->channels * 4;
if (size < asize) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (size < asize)
return AVERROR_INVALIDDATA;
if (b->adpc) {
av_log(s, AV_LOG_WARNING, "skipping additional ADPC chunk\n");
goto skip;
} else {
b->adpc = av_mallocz(asize);
if (!b->adpc) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (!b->adpc)
return AVERROR(ENOMEM);
if (bfstm && codec != AV_CODEC_ID_ADPCM_THP_LE) {
// Big-endian BFSTMs have little-endian SEEK tables
// for some strange reason.
@ -351,10 +340,8 @@ static int read_header(AVFormatContext *s)
case MKTAG('D','A','T','A'):
if ((start < avio_tell(s->pb)) ||
(!b->adpc && (codec == AV_CODEC_ID_ADPCM_THP ||
codec == AV_CODEC_ID_ADPCM_THP_LE))) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
codec == AV_CODEC_ID_ADPCM_THP_LE)))
return AVERROR_INVALIDDATA;
avio_skip(s->pb, start - avio_tell(s->pb));
if (bfstm && (codec == AV_CODEC_ID_ADPCM_THP ||
@ -374,10 +361,7 @@ skip:
}
}
fail:
read_close(s);
return ret;
return AVERROR_EOF;
}
static int read_packet(AVFormatContext *s, AVPacket *pkt)
@ -485,6 +469,7 @@ const AVInputFormat ff_brstm_demuxer = {
.name = "brstm",
.long_name = NULL_IF_CONFIG_SMALL("BRSTM (Binary Revolution Stream)"),
.priv_data_size = sizeof(BRSTMDemuxContext),
.flags_internal = FF_FMT_INIT_CLEANUP,
.read_probe = probe,
.read_header = read_header,
.read_packet = read_packet,
@ -497,6 +482,7 @@ const AVInputFormat ff_bfstm_demuxer = {
.name = "bfstm",
.long_name = NULL_IF_CONFIG_SMALL("BFSTM (Binary Cafe Stream)"),
.priv_data_size = sizeof(BRSTMDemuxContext),
.flags_internal = FF_FMT_INIT_CLEANUP,
.read_probe = probe_bfstm,
.read_header = read_header,
.read_packet = read_packet,