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/*
* $Id: AUD_FFMPEGWriter.h 39792 2011-08-30 09:15:55Z nexyon $
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* Audaspace 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.
*
* AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/ffmpeg/AUD_FFMPEGWriter.h
* \ingroup audffmpeg
*/
#ifndef AUD_FFMPEGWRITER
#define AUD_FFMPEGWRITER
#include "AUD_ConverterFunctions.h"
#include "AUD_Buffer.h"
#include "AUD_IWriter.h"
#include <string>
struct AVCodecContext;
extern "C" {
#include <libavformat/avformat.h>
}
/**
* This class writes a sound file via ffmpeg.
*/
class AUD_FFMPEGWriter : public AUD_IWriter
{
private:
/**
* The current position in samples.
*/
int m_position;
/**
* The specification of the audio data.
*/
AUD_DeviceSpecs m_specs;
/**
* The AVFormatContext structure for using ffmpeg.
*/
AVFormatContext* m_formatCtx;
/**
* The AVCodecContext structure for using ffmpeg.
*/
AVCodecContext* m_codecCtx;
/**
* The AVOutputFormat structure for using ffmpeg.
*/
AVOutputFormat* m_outputFmt;
/**
* The AVStream structure for using ffmpeg.
*/
AVStream* m_stream;
/**
* The input buffer for the format converted data before encoding.
*/
AUD_Buffer m_input_buffer;
/**
* The output buffer for the encoded audio data.
*/
AUD_Buffer m_output_buffer;
/**
* The count of input samples we have so far.
*/
unsigned int m_input_samples;
/**
* The count of input samples necessary to encode a packet.
*/
unsigned int m_input_size;
/**
* Converter function.
*/
AUD_convert_f m_convert;
// hide copy constructor and operator=
AUD_FFMPEGWriter(const AUD_FFMPEGWriter&);
AUD_FFMPEGWriter& operator=(const AUD_FFMPEGWriter&);
/**
* Encodes to the output buffer.
* \param data Pointer to the data to encode.
*/
void encode(sample_t* data);
public:
/**
* Creates a new writer.
* \param filename The path to the file to be read.
* \param specs The file's audio specification.
* \param format The file's container format.
* \param codec The codec used for encoding the audio data.
* \param bitrate The bitrate for encoding.
* \exception AUD_Exception Thrown if the file specified does not exist or
* cannot be read with ffmpeg.
*/
AUD_FFMPEGWriter(std::string filename, AUD_DeviceSpecs specs, AUD_Container format, AUD_Codec codec, unsigned int bitrate);
/**
* Destroys the writer and closes the file.
*/
virtual ~AUD_FFMPEGWriter();
virtual int getPosition() const;
virtual AUD_DeviceSpecs getSpecs() const;
virtual void write(unsigned int length, sample_t* buffer);
};
#endif //AUD_FFMPEGWRITER
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