mirror of https://github.com/odrling/Aegisub
116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
// 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 Project http://www.aegisub.org/
|
|
//
|
|
// $Id$
|
|
|
|
/// @file audio_player_alsa.h
|
|
/// @see audio_player_alsa.cpp
|
|
/// @ingroup audio_output
|
|
///
|
|
|
|
|
|
#ifdef WITH_ALSA
|
|
|
|
|
|
///////////
|
|
// Headers
|
|
#include <wx/wxprec.h>
|
|
#include "include/aegisub/audio_player.h"
|
|
#include "include/aegisub/audio_provider.h"
|
|
#include "utils.h"
|
|
#include "main.h"
|
|
#include "frame_main.h"
|
|
#include <alsa/asoundlib.h>
|
|
#include "options.h"
|
|
|
|
|
|
///////////////
|
|
// Alsa player
|
|
class AlsaPlayer : public AudioPlayer {
|
|
private:
|
|
bool open;
|
|
volatile bool playing;
|
|
volatile float volume;
|
|
|
|
volatile unsigned long start_frame; // first frame of playback
|
|
volatile unsigned long cur_frame; // last written frame + 1
|
|
volatile unsigned long end_frame; // last frame to play
|
|
unsigned long bpf; // bytes per frame
|
|
|
|
AudioProvider *provider;
|
|
snd_pcm_t *pcm_handle; // device handle
|
|
snd_pcm_stream_t stream; // stream direction
|
|
snd_async_handler_t *pcm_callback;
|
|
|
|
snd_pcm_format_t sample_format;
|
|
unsigned int rate; // sample rate of audio
|
|
unsigned int real_rate; // actual sample rate played back
|
|
unsigned int period_len; // length of period in microseconds
|
|
unsigned int buflen; // length of buffer in microseconds
|
|
snd_pcm_uframes_t period; // size of period in frames
|
|
snd_pcm_uframes_t bufsize; // size of buffer in frames
|
|
|
|
void SetUpHardware();
|
|
void SetUpAsync();
|
|
|
|
static void async_write_handler(snd_async_handler_t *pcm_callback);
|
|
|
|
public:
|
|
AlsaPlayer();
|
|
~AlsaPlayer();
|
|
|
|
void OpenStream();
|
|
void CloseStream();
|
|
|
|
void Play(int64_t start,int64_t count);
|
|
void Stop(bool timerToo=true);
|
|
bool IsPlaying();
|
|
|
|
int64_t GetStartPosition();
|
|
int64_t GetEndPosition();
|
|
int64_t GetCurrentPosition();
|
|
void SetEndPosition(int64_t pos);
|
|
void SetCurrentPosition(int64_t pos);
|
|
|
|
void SetVolume(double vol) { volume = vol; }
|
|
double GetVolume() { return volume; }
|
|
};
|
|
|
|
|
|
|
|
///////////
|
|
// Factory
|
|
class AlsaPlayerFactory : public AudioPlayerFactory {
|
|
public:
|
|
AudioPlayer *CreatePlayer() { return new AlsaPlayer(); }
|
|
};
|
|
|
|
#endif
|
|
|