Aegisub/aegisub/audio_provider_lavc.h

99 lines
2.9 KiB
C++

// Copyright (c) 2005-2006, Rodrigo Braz Monteiro, Fredrik Mellbin
// 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:zeratul@cellosoft.com
//
///////////
// Headers
#ifdef WITH_FFMPEG
#ifdef WIN32
#define EMULATE_INTTYPES
#endif
#include <wx/wxprec.h>
/* avcodec.h uses INT64_C in a *single* place. This prolly breaks on Win32,
* but, well. Let's at least fix it for Linux.
*
#define __STDC_CONSTANT_MACROS 1
#include <stdint.h>
* - done in posix/defines.h
*/
extern "C" {
#include <ffmpeg/avcodec.h>
#include <ffmpeg/avformat.h>
}
#include "mkv_wrap.h"
#include "lavc_file.h"
#include "include/aegisub/audio_provider.h"
#include "lavc_file.h"
#include <vector>
///////////////////////
// LAVC Audio Provider
class LAVCAudioProvider : public AudioProvider {
private:
LAVCFile *lavcfile;
AVCodecContext *codecContext;
ReSampleContext *rsct;
float resample_ratio;
AVStream *stream;
int audStream;
int16_t *buffer;
std::vector<int16_t> overshoot_buffer;
int leftover_samples;
void Destroy();
public:
LAVCAudioProvider(Aegisub::String _filename);
virtual ~LAVCAudioProvider();
virtual void GetAudio(void *buf, int64_t start, int64_t count);
};
///////////
// Factory
class LAVCAudioProviderFactory : public AudioProviderFactory {
public:
AudioProvider *CreateProvider(Aegisub::String file) { return new LAVCAudioProvider(file); }
};
#endif