/*
 * $Id$
 *
 * ***** BEGIN LGPL LICENSE BLOCK *****
 *
 * Copyright 2009 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 Lesser General Public License as published by
 * the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with AudaSpace.  If not, see <http://www.gnu.org/licenses/>.
 *
 * ***** END LGPL LICENSE BLOCK *****
 */

#include "AUD_FFMPEGFactory.h"
#include "AUD_FFMPEGReader.h"
#include "AUD_Space.h"

extern "C" {
#include <libavformat/avformat.h>
}

AUD_FFMPEGFactory::AUD_FFMPEGFactory(const char* filename)
{
	if(filename != 0)
	{
		m_filename = new char[strlen(filename)+1]; AUD_NEW("string")
		strcpy(m_filename, filename);
	}
	else
		m_filename = 0;
	m_buffer = 0;
	m_size = 0;
}

AUD_FFMPEGFactory::AUD_FFMPEGFactory(unsigned char* buffer, int size)
{
	m_filename = 0;
	m_buffer = (unsigned char*)av_malloc(size); AUD_NEW("buffer")
	m_size = size;
	memcpy(m_buffer, buffer, size);
}

AUD_FFMPEGFactory::~AUD_FFMPEGFactory()
{
	if(m_filename)
	{
		delete[] m_filename; AUD_DELETE("string")
	}
	if(m_buffer)
	{
		av_free(m_buffer); AUD_DELETE("buffer")
	}
}

AUD_IReader* AUD_FFMPEGFactory::createReader()
{
	try
	{
		AUD_IReader* reader;
		if(m_filename)
			reader = new AUD_FFMPEGReader(m_filename);
		else
			reader = new AUD_FFMPEGReader(m_buffer, m_size);
		AUD_NEW("reader")
		return reader;
	}
	catch(AUD_Exception e)
	{
		// return 0 if ffmpeg cannot read the file
		if(e.error == AUD_ERROR_FFMPEG)
			return 0;
		// but throw an exception if the file doesn't exist
		else
			throw;
	}
}