forked from mia/Aegisub
774fb0f674
* Wrapping all headers that are in agi_pre.h with AGI_PRE. * Sorting alphabetically. * Same operation as r3515. Note: This is broken when precompiled headers are not in use, I'll fix that after this commit so the two changes don't get jumbled up. Originally committed to SVN as r3525.
171 lines
3.9 KiB
C++
171 lines
3.9 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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//
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// $Id$
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/// @file audio_player_alsa.h
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/// @see audio_player_alsa.cpp
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/// @ingroup audio_output
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///
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#ifdef WITH_ALSA
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///////////
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// Headers
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#include <alsa/asoundlib.h>
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#include "frame_main.h"
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#include "include/aegisub/audio_player.h"
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#include "include/aegisub/audio_provider.h"
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#include "options.h"
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#include "utils.h"
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/// DOCME
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/// @class AlsaPlayer
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/// @brief DOCME
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///
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/// DOCME
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class AlsaPlayer : public AudioPlayer {
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private:
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/// DOCME
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bool open;
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/// DOCME
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volatile bool playing;
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/// DOCME
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volatile float volume;
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/// DOCME
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volatile unsigned long start_frame; // first frame of playback
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/// DOCME
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volatile unsigned long cur_frame; // last written frame + 1
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/// DOCME
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volatile unsigned long end_frame; // last frame to play
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/// DOCME
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unsigned long bpf; // bytes per frame
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/// DOCME
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AudioProvider *provider;
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/// DOCME
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snd_pcm_t *pcm_handle; // device handle
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/// DOCME
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snd_pcm_stream_t stream; // stream direction
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/// DOCME
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snd_async_handler_t *pcm_callback;
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/// DOCME
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snd_pcm_format_t sample_format;
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/// DOCME
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unsigned int rate; // sample rate of audio
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/// DOCME
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unsigned int real_rate; // actual sample rate played back
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/// DOCME
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unsigned int period_len; // length of period in microseconds
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/// DOCME
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unsigned int buflen; // length of buffer in microseconds
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/// DOCME
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snd_pcm_uframes_t period; // size of period in frames
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/// DOCME
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snd_pcm_uframes_t bufsize; // size of buffer in frames
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void SetUpHardware();
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void SetUpAsync();
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static void async_write_handler(snd_async_handler_t *pcm_callback);
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public:
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AlsaPlayer();
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~AlsaPlayer();
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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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/// @brief DOCME
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/// @param vol
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/// @return
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///
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void SetVolume(double vol) { volume = vol; }
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/// @brief DOCME
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/// @return
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///
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double GetVolume() { return volume; }
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};
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/// DOCME
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/// @class AlsaPlayerFactory
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/// @brief DOCME
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///
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/// DOCME
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class AlsaPlayerFactory : public AudioPlayerFactory {
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public:
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/// @brief DOCME
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///
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AudioPlayer *CreatePlayer() { return new AlsaPlayer(); }
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};
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#endif
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