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avformat/spdifenc: Fix leak upon error 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit e38cbb8d19)
This commit is contained in:
Andreas Rheinhardt 2021-02-22 09:10:40 +01:00
parent de2229421e
commit c0aa40d334
1 changed files with 4 additions and 2 deletions
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6
libavformat/spdifenc.c
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@ -122,14 +122,16 @@ static int spdif_header_eac3(AVFormatContext *s, AVPacket *pkt)
IEC61937Context *ctx = s->priv_data;
static const uint8_t eac3_repeat[4] = {6, 3, 2, 1};
int repeat = 1;
uint8_t *tmp;
int bsid = pkt->data[5] >> 3;
if (bsid > 10 && (pkt->data[4] & 0xc0) != 0xc0) /* fscod */
repeat = eac3_repeat[(pkt->data[4] & 0x30) >> 4]; /* numblkscod */
ctx->hd_buf[0] = av_fast_realloc(ctx->hd_buf[0], &ctx->hd_buf_size, ctx->hd_buf_filled + pkt->size);
if (!ctx->hd_buf[0])
tmp = av_fast_realloc(ctx->hd_buf[0], &ctx->hd_buf_size, ctx->hd_buf_filled + pkt->size);
if (!tmp)
return AVERROR(ENOMEM);
ctx->hd_buf[0] = tmp;
memcpy(&ctx->hd_buf[0][ctx->hd_buf_filled], pkt->data, pkt->size);