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audioconvert.h
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audioconvert.h
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/*
* Class AudioConvert
* Created by Jean-Yves Avenard on 10/06/13.
*
* Copyright (C) Bubblestuff Pty Ltd 2013
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MythXCode_audioconvert
#define MythXCode_audioconvert
#include "libmyth/mythexp.h"
#include "libmyth/audio/audiooutputsettings.h"
class AudioConvertInternal;
class MPUBLIC AudioConvert
{
public:
AudioConvert(AudioFormat in, AudioFormat out)
: m_in(in), m_out(out) {}
virtual ~AudioConvert();
/**
* Process
* Parameters:
* out : destination buffer where converted samples will be copied
* in : source buffer
* bytes: size in bytes of source buffer
*
* Return Value: size in bytes of samples converted or <= 0 if error
*/
int Process(void* out, const void* in, int bytes, bool noclip = false);
AudioFormat Out(void) { return m_out; }
AudioFormat In(void) { return m_in; }
bool operator==(const AudioConvert& rhs) const
{ return m_in == rhs.m_in && m_out == rhs.m_out; }
bool operator!=(const AudioConvert& rhs) const
{ return m_in != rhs.m_in || m_out != rhs.m_out; }
void DeinterleaveSamples(int channels,
uint8_t* output, const uint8_t* input,
int data_size);
void InterleaveSamples(int channels,
uint8_t* output, const uint8_t* const* input,
int data_size);
void InterleaveSamples(int channels,
uint8_t* output, const uint8_t* input,
int data_size);
// static utilities
static int toFloat(AudioFormat format, void* out, const void* in, int bytes);
static int fromFloat(AudioFormat format, void* out, const void* in, int bytes);
static void MonoToStereo(void* dst, const void* src, int samples);
static void DeinterleaveSamples(AudioFormat format, int channels,
uint8_t* output, const uint8_t* input,
int data_size);
static void InterleaveSamples(AudioFormat format, int channels,
uint8_t* output, const uint8_t* const* input,
int data_size);
static void InterleaveSamples(AudioFormat format, int channels,
uint8_t* output, const uint8_t* input,
int data_size);
private:
AudioConvertInternal* m_ctx {nullptr};
AudioFormat m_in, m_out;
};
#endif /* defined(MythXCode_audioconvert) */