89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_PCM_FORMAT_HXX
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#define MPD_PCM_FORMAT_HXX
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#include "AudioFormat.hxx"
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#include <stdint.h>
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#include <stddef.h>
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template<typename T> struct ConstBuffer;
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class PcmBuffer;
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class PcmDither;
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/**
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* Converts PCM samples to 16 bit. If the source format is 24 bit,
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* then dithering is applied.
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*
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* @param buffer a PcmBuffer object
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* @param dither a pcm_dither object for 24-to-16 conversion
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* @param bits the number of in the source buffer
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* @param src the source PCM buffer
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* @return the destination buffer
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*/
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gcc_pure
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ConstBuffer<int16_t>
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pcm_convert_to_16(PcmBuffer &buffer, PcmDither &dither,
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SampleFormat src_format, ConstBuffer<void> src);
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/**
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* Converts PCM samples to 24 bit (32 bit alignment).
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*
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* @param buffer a PcmBuffer object
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* @param bits the number of in the source buffer
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* @param src the source PCM buffer
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* @return the destination buffer
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*/
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gcc_pure
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ConstBuffer<int32_t>
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pcm_convert_to_24(PcmBuffer &buffer,
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SampleFormat src_format, ConstBuffer<void> src);
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/**
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* Converts PCM samples to 32 bit.
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*
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* @param buffer a PcmBuffer object
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* @param bits the number of in the source buffer
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* @param src the source PCM buffer
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* @return the destination buffer
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*/
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gcc_pure
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ConstBuffer<int32_t>
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pcm_convert_to_32(PcmBuffer &buffer,
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SampleFormat src_format, ConstBuffer<void> src);
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/**
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* Converts PCM samples to 32 bit floating point.
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*
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* @param buffer a PcmBuffer object
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* @param bits the number of in the source buffer
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* @param src the source PCM buffer
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* @param src_size the size of #src in bytes
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* @param dest_size_r returns the number of bytes of the destination buffer
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* @return the destination buffer
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*/
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gcc_pure
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ConstBuffer<float>
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pcm_convert_to_float(PcmBuffer &buffer,
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SampleFormat src_format, ConstBuffer<void> src);
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#endif
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