On 11/25/2012 05:41 PM, Justin Ruggles wrote:
> This is needed for the AAC decoder, which may need to call get_buffer()
> more than once if the channel configuration changes.
> ---
> libavcodec/avcodec.h | 7 ++++++-
> 1 files changed, 6 insertions(+), 1 deletions(-)
>
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index 58ea1bc..5e358ca 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -2218,7 +2218,12 @@ typedef struct AVCodecContext {
> *
> * Decoders cannot use the buffer after returning from
> * avcodec_decode_audio4(), so they will not call release_buffer(), as it
> - * is assumed to be released immediately upon return.
> + * is assumed to be released immediately upon return. In some rare cases,
> + * a decoder may need to call get_buffer() more than once in a single
> + * call to avcodec_decode_audio4(). In that case, when get_buffer() is
> + * called again after it has already been called once, the previously
> + * acquired buffer is assumed to be released at that time and may not be
> + * reused by the decoder.
> *
> * As a convenience, av_samples_get_buffer_size() and
> * av_samples_fill_arrays() in libavutil may be used by custom
> get_buffer()
Ok.
lu
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