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lavc: preserve the original private data in avcodec_copy_context()

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If a non-NULL codec was passed to avcodec_alloc_context3(), private data
will be already allocated in dest.
This commit is contained in:
Anton Khirnov 2014-04-05 07:38:16 +02:00
parent c9281a01b7
commit efc7df6c1f
1 changed files with 6 additions and 2 deletions
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8
libavcodec/options.c
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@ -137,6 +137,9 @@ AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
{
const AVCodec *orig_codec = dest->codec;
uint8_t *orig_priv_data = dest->priv_data;
if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
av_log(dest, AV_LOG_ERROR,
"Tried to copy AVCodecContext %p into already-initialized %p\n",
@ -145,9 +148,10 @@ int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
}
memcpy(dest, src, sizeof(*dest));
dest->priv_data = orig_priv_data;
dest->codec = orig_codec;
/* set values specific to opened codecs back to their default state */
dest->priv_data = NULL;
dest->codec = NULL;
dest->slice_offset = NULL;
dest->hwaccel = NULL;
dest->internal = NULL;