forked from mia/Aegisub
138 lines
4.5 KiB
C++
138 lines
4.5 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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/// @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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extern "C" {
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#include <portaudio.h>
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}
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#include <map>
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#include <string>
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#include <vector>
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class wxArrayString;
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/// @class PortAudioPlayer
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/// @brief PortAudio Player
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///
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class PortAudioPlayer final : public AudioPlayer {
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typedef std::vector<PaDeviceIndex> DeviceVec;
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/// Map of supported output devices from name -> device index
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std::map<std::string, DeviceVec> devices;
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/// The index of the default output devices sorted by host API priority
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DeviceVec default_device;
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float volume = 1.f; ///< Current volume level
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int64_t current = 0; ///< Current position
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int64_t start = 0; ///< Start position
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int64_t end = 0; ///< End position
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PaTime pa_start; ///< PortAudio internal start position
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PaStream *stream = nullptr; ///< 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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/// Gather the list of output devices supported by a host API
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/// @param host_idx Host API ID
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void GatherDevices(PaHostApiIndex host_idx);
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void OpenStream();
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public:
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/// @brief Constructor
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PortAudioPlayer(AudioProvider *provider);
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/// @brief Destructor
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~PortAudioPlayer();
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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();
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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 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 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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