Aegisub/aegisub/audio_provider_pcm.h

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// Copyright (c) 2007, Niels Martin Hansen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:jiifurusu@gmail.com
//
#pragma once
///////////
// Headers
#include "include/aegisub/audio_provider.h"
#include <wx/file.h>
#include <wx/thread.h>
#include <vector>
/////////////////////////////
// Audio provider base class
class PCMAudioProvider : public AudioProvider {
protected:
wxMutex filemutex;
wxFile file;
// Hold data for an index point,
// to support files where audio data are
// split into multiple blocks.
// Using int64_t's should be safe on most compilers,
// wx defines wxFileOffset as int64 when possible
struct IndexPoint {
int64_t start_byte;
int64_t start_sample;
int64_t num_samples;
};
typedef std::vector<IndexPoint> IndexVector;
IndexVector index_points;
public:
virtual void GetAudio(void *buf, int64_t start, int64_t count);
};
// Construct the right PCM audio provider (if any) for the file
AudioProvider *CreatePCMAudioProvider(const wxString &filename);