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Clarify avcodec_encode_audio() vs. PCM audio.
patch by Stefano Sabatini, stefano.sabatini-lala poste it Originally committed as revision 13445 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -2750,6 +2750,8 @@ int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
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* @param[in] samples the input buffer containing the samples
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* The number of samples read from this buffer is frame_size*channels,
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* both of which are defined in \p avctx.
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* For PCM audio the number of samples read from \p samples is equal to
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* \p buf_size * input_sample_size / output_sample_size.
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* @return On error a negative value is returned, on success zero or the number
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* of bytes used to encode the data read from the input buffer.
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*/
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