Aegisub/core/audio_provider.h

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2006-01-16 22:02:54 +01:00
// Copyright (c) 2005, Rodrigo Braz Monteiro
// 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
//
#ifndef AUDIO_PROVIDER_H
#define AUDIO_PROVIDER_H
///////////
// Headers
#include <wx/wxprec.h>
#include "avisynth_wrap.h"
#include <fstream>
#include <time.h>
//////////////
// Prototypes
class AudioDisplay;
//////////////
// Types enum
enum AudioProviderType {
AUDIO_PROVIDER_NONE,
AUDIO_PROVIDER_AVS,
AUDIO_PROVIDER_CACHE,
AUDIO_PROVIDER_DISK_CACHE
};
////////////////////////
// Audio provider class
class AudioProvider : public wxEvtHandler, public AviSynthWrapper {
private:
static int pa_refcount;
wxMutex diskmutex;
AudioProviderType type;
char** blockcache;
int blockcount;
void *raw;
int raw_len;
AudioDisplay *display;
std::ifstream file_cache;
wxString filename;
PClip clip;
int channels;
__int64 num_samples;
int sample_rate;
int bytes_per_sample;
void OpenStream();
void CloseStream();
void ConvertToRAMCache(PClip &tempclip);
void ConvertToDiskCache(PClip &tempclip);
void LoadFromClip(AVSValue clip);
void OpenAVSAudio();
void OnStopAudio(wxCommandEvent &event);
static wxString DiskCachePath();
static wxString DiskCacheName();
void SetFile();
void Unload();
public:
wxMutex PAMutex;
volatile bool stopping;
bool softStop;
bool playing;
bool spectrum;
float volume;
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volatile __int64 playPos;
volatile __int64 startPos;
volatile __int64 endPos;
volatile __int64 realPlayPos;
volatile __int64 startMS;
void *stream;
clock_t span;
AudioProvider(wxString _filename, AudioDisplay *_display);
~AudioProvider();
wxString GetFilename();
void GetAudio(void *buf, __int64 start, __int64 count);
void GetWaveForm(int *min,int *peak,__int64 start,int w,int h,int samples,float scale);
void Play(__int64 start,__int64 count);
void Stop(bool timerToo=true);
void RequestStop();
int GetChannels();
__int64 GetNumSamples();
int GetSampleRate();
DECLARE_EVENT_TABLE()
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};
/////////
// Event
DECLARE_EVENT_TYPE(wxEVT_STOP_AUDIO, -1)
#endif