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Code Issues Releases Activity

avformat/redspark: remove av_malloc usage

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-06-12 16:30:32 -03:00
parent aafdad1b45
commit 8fdad638f9
1 changed files with 8 additions and 21 deletions
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29
libavformat/redspark.c
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@ -59,7 +59,7 @@ static int redspark_read_header(AVFormatContext *s)
GetByteContext gbc;
int i, coef_off, ret = 0;
uint32_t key, data;
uint8_t *header, *pbc;
uint8_t header[HEADER_SIZE];
AVStream *st;
st = avformat_new_stream(s, NULL);
@ -67,20 +67,15 @@ static int redspark_read_header(AVFormatContext *s)
return AVERROR(ENOMEM);
par = st->codecpar;
header = av_malloc(HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE);
if (!header)
return AVERROR(ENOMEM);
pbc = header;
/* Decrypt header */
data = avio_rb32(pb);
data = data ^ (key = data ^ 0x52656453);
bytestream_put_be32(&pbc, data);
AV_WB32(header, data);
key = (key << 11) | (key >> 21);
for (i = 4; i < HEADER_SIZE; i += 4) {
data = avio_rb32(pb) ^ (key = ((key << 3) | (key >> 29)) + key);
bytestream_put_be32(&pbc, data);
AV_WB32(header + i, data);
}
par->codec_id = AV_CODEC_ID_ADPCM_THP;
@ -91,8 +86,7 @@ static int redspark_read_header(AVFormatContext *s)
par->sample_rate = bytestream2_get_be32u(&gbc);
if (par->sample_rate <= 0 || par->sample_rate > 96000) {
av_log(s, AV_LOG_ERROR, "Invalid sample rate: %d\n", par->sample_rate);
ret = AVERROR_INVALIDDATA;
goto fail;
return AVERROR_INVALIDDATA;
}
st->duration = bytestream2_get_be32u(&gbc) * 14;
@ -100,8 +94,7 @@ static int redspark_read_header(AVFormatContext *s)
bytestream2_skipu(&gbc, 10);
par->channels = bytestream2_get_byteu(&gbc);
if (!par->channels) {
ret = AVERROR_INVALIDDATA;
goto fail;
return AVERROR_INVALIDDATA;
}
coef_off = 0x54 + par->channels * 8;
@ -109,30 +102,24 @@ static int redspark_read_header(AVFormatContext *s)
coef_off += 16;
if (coef_off + par->channels * (32 + 14) > HEADER_SIZE) {
ret = AVERROR_INVALIDDATA;
goto fail;
return AVERROR_INVALIDDATA;
}
if (ff_alloc_extradata(par, 32 * par->channels)) {
ret = AVERROR(ENOMEM);
goto fail;
return AVERROR_INVALIDDATA;
}
/* Get the ADPCM table */
bytestream2_seek(&gbc, coef_off, SEEK_SET);
for (i = 0; i < par->channels; i++) {
if (bytestream2_get_bufferu(&gbc, par->extradata + i * 32, 32) != 32) {
ret = AVERROR_INVALIDDATA;
goto fail;
return AVERROR_INVALIDDATA;
}
bytestream2_skipu(&gbc, 14);
}
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
fail:
av_free(header);
return ret;
}