// Copyright (c) 2007, Niels Martin Hansen // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // * Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // * Neither the name of the Aegisub Group nor the names of its contributors // may be used to endorse or promote products derived from this software // without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGE. // // Aegisub Project http://www.aegisub.org/ // // $Id$ /// @file audio_player_openal.h /// @see audio_player_openal.cpp /// @ingroup audio_output /// #ifdef WITH_OPENAL #include "include/aegisub/audio_player.h" #include "include/aegisub/audio_provider.h" #ifdef __WINDOWS__ #include #include #elif defined(__APPLE__) #include #include #else #include #include #endif #ifndef AGI_PRE #include #include #endif /// DOCME /// @class OpenALPlayer /// @brief DOCME /// /// DOCME class OpenALPlayer : public AudioPlayer, wxTimer { /// Number of OpenAL buffers to use static const ALsizei num_buffers = 8; bool open; ///< Is the player ready to play? bool playing; ///< Is audio currently playing? float volume; ///< Current audio volume ALsizei samplerate; ///< Sample rate of the audio int bpf; ///< Bytes per frame int64_t start_frame; ///< First frame of playbacka int64_t cur_frame; ///< Next frame to write to playback buffers int64_t end_frame; ///< Last frame to play ALCdevice *device; ///< OpenAL device handle ALCcontext *context; ///< OpenAL sound context ALuint buffers[num_buffers]; ///< OpenAL sound buffers ALuint source; ///< OpenAL playback source /// Index into buffers, first free (unqueued) buffer to be filled ALsizei buf_first_free; /// Index into buffers, first queued (non-free) buffer ALsizei buf_first_queued; /// Number of free buffers ALsizei buffers_free; /// Number of buffers which have been fully played since playback was last started ALsizei buffers_played; /// DOCME wxStopWatch playback_segment_timer; /// Buffer to decode audio into std::vector decode_buffer; /// Fill count OpenAL buffers void FillBuffers(ALsizei count); protected: /// wxTimer override to periodically fill available buffers void Notify(); public: OpenALPlayer(); ~OpenALPlayer(); void OpenStream(); void CloseStream(); void Play(int64_t start,int64_t count); void Stop(); bool IsPlaying() { return playing; } int64_t GetStartPosition() { return start_frame; } int64_t GetEndPosition() { return end_frame; } int64_t GetCurrentPosition(); void SetEndPosition(int64_t pos); void SetCurrentPosition(int64_t pos); void SetVolume(double vol) { volume = vol; } double GetVolume() { return volume; } }; #endif