Aegisub/aegisub/src/audio_player_portaudio.h

142 lines
4.1 KiB
C++

// Copyright (c) 2005-2007, 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 Project http://www.aegisub.org/
//
// $Id$
/// @file audio_player_portaudio.h
/// @see audio_player_portaudio.cpp
/// @ingroup audio_output
///
#ifdef WITH_PORTAUDIO
///////////
// Headers
#include "include/aegisub/audio_player.h"
#include "include/aegisub/audio_provider.h"
#include "utils.h"
extern "C" {
#include <portaudio.h>
}
/// @class PortAudioPlayer
/// @brief PortAudio Player
///
class PortAudioPlayer : public AudioPlayer {
private:
/// PortAudio initilisation reference counter.
static int pa_refcount;
/// Current volume level.
float volume;
/// @brief Stream playback position info.
struct PositionInfo {
volatile int64_t current; /// Current position.
volatile int64_t start; /// Start position.
volatile int64_t end; /// End position.
PaTime pa_start; /// PortAudio internal start position.
};
PositionInfo pos;
/// PortAudio stream.
void *stream;
static int paCallback(
const void *inputBuffer,
void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo*
timeInfo,
PaStreamCallbackFlags
statusFlags,
void *userData);
static void paStreamFinishedCallback(void *userData);
public:
PortAudioPlayer();
~PortAudioPlayer();
void OpenStream();
void CloseStream();
void Play(int64_t start,int64_t count);
void Stop(bool timerToo=true);
/// @brief Whether audio is currently being played.
/// @return Status
bool IsPlaying();
/// @brief Position audio will be played from.
/// @return Start position.
int64_t GetStartPosition() { return pos.start; }
/// @brief End position playback will stop at.
/// @return End position.
int64_t GetEndPosition() { return pos.end; }
int64_t GetCurrentPosition();
/// @brief Set end position of playback
/// @param pos End position
void SetEndPosition(int64_t position) { pos.end = position; }
/// @brief Set current position of playback.
/// @param pos Current position
void SetCurrentPosition(int64_t position) { pos.current = position; }
/// @brief Set volume level
/// @param vol Volume
void SetVolume(double vol) { volume = vol; }
/// @brief Get current volume level
/// @return Volume level
double GetVolume() { return volume; }
wxArrayString GetOutputDevices(wxString favorite);
};
/// @class PortAudioPlayerFactory
/// @brief PortAudio Player Factory
class PortAudioPlayerFactory : public AudioPlayerFactory {
public:
/// @brief Create player
/// @return New PortAudio Player
AudioPlayer *CreatePlayer() { return new PortAudioPlayer(); }
};
#endif //ifdef WITH_PORTAUDIO