@note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
However, for codecs with avctx->frame_size equal to 0 (e.g. PCM) the user
will know how much space is needed because it depends on the value passed
in buf_size as described below. In that case a lower value can be used.
@param avctx the codec context
@paramout buf the output buffer
@paramin buf_size the output buffer size
@paramin samples the input buffer containing the samples
The number of samples read from this buffer is frame_size*channels,
both of which are defined in avctx.
For codecs which have avctx->frame_size equal to 0 (e.g. PCM) the number of
samples read from samples is equal to:
buf_size * 8 / (avctx->channels * av_get_bits_per_sample(avctx->codec_id))
This also implies that av_get_bits_per_sample() must not return 0 for these
codecs.
@return On error a negative value is returned, on success zero or the number
of bytes used to encode the data read from the input buffer.
Encode an audio frame from samples into buf.
@deprecated Use avcodec_encode_audio2 instead.
@note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. However, for codecs with avctx->frame_size equal to 0 (e.g. PCM) the user will know how much space is needed because it depends on the value passed in buf_size as described below. In that case a lower value can be used.
@param avctx the codec context @paramout buf the output buffer @paramin buf_size the output buffer size @paramin samples the input buffer containing the samples The number of samples read from this buffer is frame_size*channels, both of which are defined in avctx. For codecs which have avctx->frame_size equal to 0 (e.g. PCM) the number of samples read from samples is equal to: buf_size * 8 / (avctx->channels * av_get_bits_per_sample(avctx->codec_id)) This also implies that av_get_bits_per_sample() must not return 0 for these codecs. @return On error a negative value is returned, on success zero or the number of bytes used to encode the data read from the input buffer.