89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
/*
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* Copyright 2003-2018 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 PCM_CONVERT_HXX
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#define PCM_CONVERT_HXX
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#include "FormatConverter.hxx"
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#include "ChannelsConverter.hxx"
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#include "GlueResampler.hxx"
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#include "AudioFormat.hxx"
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#include "config.h"
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#ifdef ENABLE_DSD
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#include "PcmDsd.hxx"
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#endif
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template<typename T> struct ConstBuffer;
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struct ConfigData;
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/**
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* This object is statically allocated (within another struct), and
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* holds buffer allocations and the state for all kinds of PCM
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* conversions.
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*/
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class PcmConvert {
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#ifdef ENABLE_DSD
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PcmDsd dsd;
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#endif
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GluePcmResampler resampler;
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PcmFormatConverter format_converter;
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PcmChannelsConverter channels_converter;
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const AudioFormat src_format;
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bool enable_resampler, enable_format, enable_channels;
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public:
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/**
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* Throws on error.
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*/
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PcmConvert(AudioFormat _src_format, AudioFormat _dest_format);
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~PcmConvert() noexcept;
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/**
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* Reset the filter's state, e.g. drop/flush buffers.
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*/
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void Reset() noexcept;
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/**
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* Converts PCM data between two audio formats.
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*
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* Throws std::runtime_error on error.
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*
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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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ConstBuffer<void> Convert(ConstBuffer<void> src);
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/**
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* Flush pending data and return it. This should be called
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* repepatedly until it returns nullptr.
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*/
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ConstBuffer<void> Flush();
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};
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void
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pcm_convert_global_init(const ConfigData &config);
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#endif
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