mirror of https://github.com/odrling/Aegisub
99 lines
3.6 KiB
C++
99 lines
3.6 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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// Aegisub Project http://www.aegisub.org/
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/// @file audio_player_pulse.h
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/// @see audio_player_pulse.cpp
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/// @ingroup audio_output
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///
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#ifdef WITH_LIBPULSE
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#include <pulse/pulseaudio.h>
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#include "include/aegisub/audio_player.h"
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class PulseAudioPlayer;
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class PulseAudioPlayer final : public AudioPlayer {
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float volume = 1.f;
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bool is_playing = false;
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volatile unsigned long start_frame = 0;
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volatile unsigned long cur_frame = 0;
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volatile unsigned long end_frame = 0;
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unsigned long bpf = 0; // bytes per frame
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wxSemaphore context_notify{0, 1};
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wxSemaphore context_success{0, 1};
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volatile int context_success_val;
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wxSemaphore stream_notify{0, 1};
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wxSemaphore stream_success{0, 1};
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volatile int stream_success_val;
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pa_threaded_mainloop *mainloop = nullptr; // pulseaudio mainloop handle
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pa_context *context = nullptr; // connection context
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volatile pa_context_state_t cstate;
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pa_stream *stream = nullptr;
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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 = 0;
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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(AudioProvider *provider);
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~PulseAudioPlayer();
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void Play(int64_t start,int64_t count);
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void Stop();
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bool IsPlaying() { return is_playing; }
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int64_t GetEndPosition() { return end_frame; }
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int64_t GetCurrentPosition();
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void SetEndPosition(int64_t pos);
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void SetVolume(double vol) { volume = vol; }
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};
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#endif
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