forked from mia/Aegisub
130 lines
4.2 KiB
C++
130 lines
4.2 KiB
C++
// Copyright (c) 2007, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:jiifurusu@gmail.com
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//
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#ifdef WITH_PULSEAUDIO
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///////////
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// Headers
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#include <wx/wxprec.h>
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#include <stdio.h>
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#include "audio_player.h"
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#include "audio_provider.h"
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#include "utils.h"
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#include "options.h"
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#include <pulse/pulseaudio.h>
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//////////////
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// Prototypes
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class PulseAudioPlayer;
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//////////////////////
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// Pulse Audio player
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class PulseAudioPlayer : public AudioPlayer {
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private:
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float volume;
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bool open;
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bool is_playing;
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// Audio data info
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volatile unsigned long start_frame;
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volatile unsigned long cur_frame;
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volatile unsigned long end_frame;
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unsigned long bpf; // bytes per frame
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// Used for synchronising with async events
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wxSemaphore context_notify;
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wxSemaphore context_success;
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volatile int context_success_val;
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wxSemaphore stream_notify;
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wxSemaphore stream_success;
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volatile int stream_success_val;
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// PulseAudio data
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pa_threaded_mainloop *mainloop; // pulseaudio mainloop handle
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pa_context *context; // connection context
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volatile pa_context_state_t cstate;
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pa_stream *stream;
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volatile pa_stream_state_t sstate;
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volatile pa_usec_t play_start_time; // timestamp when playback was started
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int paerror;
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// Called by PA to notify about contetxt operation completion
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static void pa_context_success(pa_context *c, int success, PulseAudioPlayer *thread);
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// Called by PA to notify about other context-related stuff
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static void pa_context_notify(pa_context *c, PulseAudioPlayer *thread);
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// Called by PA when a stream operation completes
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static void pa_stream_success(pa_stream *p, int success, PulseAudioPlayer *thread);
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// Called by PA to request more data written to stream
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static void pa_stream_write(pa_stream *p, size_t length, PulseAudioPlayer *thread);
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// Called by PA to notify about other stream-related stuff
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static void pa_stream_notify(pa_stream *p, PulseAudioPlayer *thread);
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public:
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PulseAudioPlayer();
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~PulseAudioPlayer();
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void OpenStream();
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void CloseStream();
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void Play(int64_t start,int64_t count);
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void Stop(bool timerToo=true);
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bool IsPlaying();
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int64_t GetStartPosition();
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int64_t GetEndPosition();
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int64_t GetCurrentPosition();
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void SetEndPosition(int64_t pos);
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void SetCurrentPosition(int64_t pos);
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void SetVolume(double vol) { volume = vol; }
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double GetVolume() { return volume; }
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};
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///////////
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// Factory
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class PulseAudioPlayerFactory : public AudioPlayerFactory {
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public:
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AudioPlayer *CreatePlayer() { return new PulseAudioPlayer(); }
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PulseAudioPlayerFactory() : AudioPlayerFactory(_T("pulse")) {}
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};
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#endif
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