forked from mia/Aegisub
87496b8767
Remove pointless volatiles. Throw agi::Exception-derived exceptions rather than bare strings. Eliminate pointless struct which wrapped a few member variables for no apparent reason. Use logging statements rather than printf. Don't set an explicit frame buffer size as the audio providers are fine with variable sizes and portaudio strongly recommends leaving it up to the device to decide. Closes #997. Originally committed to SVN as r5918.
142 lines
4.7 KiB
C++
142 lines
4.7 KiB
C++
// Copyright (c) 2005-2007, Rodrigo Braz Monteiro
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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: audio_player_portaudio.h 4719 2010-08-02 08:03:58Z plorkyeran $
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/// @file audio_player_portaudio.h
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/// @see audio_player_portaudio.cpp
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/// @ingroup audio_output
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///
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#ifdef WITH_PORTAUDIO
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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 <libaegisub/exception.h>
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extern "C" {
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#include <portaudio.h>
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}
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DEFINE_SIMPLE_EXCEPTION_NOINNER(PortAudioError, agi::Exception, "audio/player/portaudio")
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/// @class PortAudioPlayer
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/// @brief PortAudio Player
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///
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class PortAudioPlayer : public AudioPlayer {
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/// PortAudio initilisation reference counter
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static int pa_refcount;
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float volume; ///< Current volume level
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int64_t current; ///< Current position
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int64_t start; ///< Start position
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int64_t end; ///< End position
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PaTime pa_start; ///< PortAudio internal start position
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PaStream *stream; ///< PortAudio stream
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/// @brief PortAudio callback, used to fill buffer for playback, and prime the playback buffer.
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/// @param inputBuffer Input buffer.
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/// @param outputBuffer Output buffer.
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/// @param framesPerBuffer Frames per buffer.
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/// @param timeInfo PortAudio time information.
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/// @param statusFlags Status flags
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/// @param userData Local data to hand callback
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/// @return Whether to stop playback.
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static int paCallback(
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const void *inputBuffer,
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void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo*
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timeInfo,
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PaStreamCallbackFlags
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statusFlags,
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void *userData);
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/// @brief Called when the callback has finished.
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/// @param userData Local data to be handed to the callback.
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static void paStreamFinishedCallback(void *userData);
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public:
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/// @brief Constructor
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PortAudioPlayer();
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/// @brief Destructor
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~PortAudioPlayer();
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/// @brief Open stream
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void OpenStream();
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/// @brief Close stream
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void CloseStream();
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/// @brief Play audio.
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/// @param start Start position.
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/// @param count Frame count
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void Play(int64_t start,int64_t count);
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/// @brief Stop Playback
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/// @param timerToo Stop display timer?
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void Stop(bool timerToo=true);
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/// @brief Whether audio is currently being played.
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/// @return Status
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bool IsPlaying();
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/// @brief Position audio will be played from.
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/// @return Start position.
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int64_t GetStartPosition() { return start; }
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/// @brief End position playback will stop at.
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/// @return End position.
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int64_t GetEndPosition() { return end; }
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/// @brief Get current stream position.
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/// @return Stream position
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int64_t GetCurrentPosition();
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/// @brief Set end position of playback
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/// @param pos End position
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void SetEndPosition(int64_t position) { end = position; }
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/// @brief Set current position of playback.
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/// @param pos Current position
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void SetCurrentPosition(int64_t position) { current = position; }
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/// @brief Set volume level
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/// @param vol Volume
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void SetVolume(double vol) { volume = vol; }
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/// @brief Get current volume level
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/// @return Volume level
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double GetVolume() { return volume; }
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/// Get list of available output devices
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static wxArrayString GetOutputDevices();
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};
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#endif //ifdef WITH_PORTAUDIO
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