mirror of https://github.com/odrling/Aegisub
Verbatium copy of audio_player_portaudio.* -> audio_player_portaudio2.*
Originally committed to SVN as r2782.
This commit is contained in:
Amar Takhar
parent
d39d308d0d
commit
23eea68fdd
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// 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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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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#include "config.h"
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#ifdef WITH_PORTAUDIO
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///////////
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// Headers
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#include "audio_player_portaudio.h"
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#include "audio_provider_manager.h"
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#include "utils.h"
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#ifdef HAVE_PA_GETSTREAMTIME
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#define Pa_StreamTime Pa_GetStreamTime /* PortAudio v19 */
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#define PaTimestamp PaTime
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#endif
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///////////
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// Library
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#if __VISUALC__ >= 1200
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#pragma comment(lib,"portaudio.lib")
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#endif
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/////////////////////
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// Reference counter
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int PortAudioPlayer::pa_refcount = 0;
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///////////////
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// Constructor
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PortAudioPlayer::PortAudioPlayer() {
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// Initialize portaudio
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if (!pa_refcount) {
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PaError err = Pa_Initialize();
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if (err != paNoError) {
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static wchar_t errormsg[2048];
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swprintf(errormsg, 2048, L"Failed opening PortAudio: %s", Pa_GetErrorText(err));
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throw (const wchar_t *)errormsg;
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}
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pa_refcount++;
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}
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// Variables
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playing = false;
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stopping = false;
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volume = 1.0f;
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paStart = 0.0;
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}
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//////////////
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// Destructor
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PortAudioPlayer::~PortAudioPlayer() {
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// Deinit portaudio
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if (!--pa_refcount) Pa_Terminate();
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}
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//////////////////////
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// PortAudio callback
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#ifndef HAVE_PA_GETSTREAMTIME
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int PortAudioPlayer::paCallback(void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, PaTimestamp outTime, void *userData) {
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#else
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int PortAudioPlayer::paCallback(const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timei,
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PaStreamCallbackFlags flags, void *userData) {
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#endif
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// Get provider
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PortAudioPlayer *player = (PortAudioPlayer *) userData;
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AudioProvider *provider = player->GetProvider();
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int end = 0;
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// Calculate how much left
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int64_t lenAvailable = player->endPos - player->playPos;
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uint64_t avail = 0;
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if (lenAvailable > 0) {
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avail = lenAvailable;
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if (avail > framesPerBuffer) {
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lenAvailable = framesPerBuffer;
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avail = lenAvailable;
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}
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}
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else {
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lenAvailable = 0;
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avail = 0;
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}
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// Play something
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if (lenAvailable > 0) {
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provider->GetAudio(outputBuffer,player->playPos,lenAvailable);
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}
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// Set volume
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short *output = (short*) outputBuffer;
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for (unsigned int i=0;i<avail;i++) output[i] = MID(-(1<<15),int(output[i] * player->GetVolume()),(1<<15)-1);
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// Fill rest with blank
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for (unsigned int i=avail;i<framesPerBuffer;i++) output[i]=0;
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// Set play position (and real one)
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player->playPos += framesPerBuffer;
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#ifndef __APPLE__
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player->realPlayPos = (int64_t)(Pa_StreamTime(player->stream) - player->paStart) + player->startPos;
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#else
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// AudioDeviceGetCurrentTime(), used by Pa_StreamTime() on OS X, is buggered, so use playPos for now
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player->realPlayPos = player->playPos;
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#endif
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// Cap to start if lower
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return end;
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}
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////////
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// Play
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void PortAudioPlayer::Play(int64_t start,int64_t count) {
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// Stop if it's already playing
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wxMutexLocker locker(PAMutex);
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// Set values
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endPos = start + count;
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playPos = start;
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realPlayPos = start;
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startPos = start;
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// Start playing
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if (!playing) {
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PaError err = Pa_StartStream(stream);
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if (err != paNoError) {
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return;
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}
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}
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playing = true;
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paStart = Pa_StreamTime(stream);
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// Update timer
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if (displayTimer && !displayTimer->IsRunning()) displayTimer->Start(15);
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}
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////////
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// Stop
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void PortAudioPlayer::Stop(bool timerToo) {
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//wxMutexLocker locker(PAMutex);
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//softStop = false;
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// Stop stream
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playing = false;
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Pa_StopStream (stream);
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// Stop timer
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if (timerToo && displayTimer) {
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displayTimer->Stop();
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}
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}
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///////////////
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// Open stream
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void PortAudioPlayer::OpenStream() {
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// Open stream
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PaError err = Pa_OpenDefaultStream(&stream,0,provider->GetChannels(),paInt16,provider->GetSampleRate(),256,
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#ifndef HAVE_PA_GETSTREAMTIME
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16, /* Pa v19 doesn't have a numberOfBuffers parameter */
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#endif
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paCallback,this);
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if (err != paNoError) {
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throw wxString(_T("Failed initializing PortAudio stream with error: ") + wxString(Pa_GetErrorText(err),wxConvLocal));
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}
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}
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///////////////
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// Close stream
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void PortAudioPlayer::CloseStream() {
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try {
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Stop(false);
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Pa_CloseStream(stream);
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} catch (...) {}
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}
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#endif // WITH_PORTAUDIO
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@ -0,0 +1,108 @@
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// 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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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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#ifdef WITH_PORTAUDIO
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///////////
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// Headers
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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 "utils.h"
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extern "C" {
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#include <portaudio.h>
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}
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////////////////////
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// Portaudio player
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class PortAudioPlayer : public AudioPlayer {
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private:
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static int pa_refcount;
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wxMutex PAMutex;
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volatile bool stopping;
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//bool softStop;
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bool playing;
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float volume;
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volatile int64_t playPos;
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volatile int64_t startPos;
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volatile int64_t endPos;
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void *stream;
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PaTimestamp paStart;
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volatile int64_t realPlayPos;
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#ifndef HAVE_PA_GETSTREAMTIME
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static int paCallback(void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, PaTimestamp outTime, void *userData);
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#else
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static int paCallback(const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo *timei,
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PaStreamCallbackFlags flags, void *userData);
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#endif
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public:
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PortAudioPlayer();
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~PortAudioPlayer();
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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() { return playing; }
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int64_t GetStartPosition() { return startPos; }
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int64_t GetEndPosition() { return endPos; }
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int64_t GetCurrentPosition() { return realPlayPos; }
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void SetEndPosition(int64_t pos) { endPos = pos; }
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void SetCurrentPosition(int64_t pos) { playPos = pos; realPlayPos = pos; }
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void SetVolume(double vol) { volume = vol; }
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double GetVolume() { return volume; }
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wxMutex *GetMutex() { return &PAMutex; }
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};
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///////////
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// Factory
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class PortAudioPlayerFactory : public AudioPlayerFactory {
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public:
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AudioPlayer *CreatePlayer() { return new PortAudioPlayer(); }
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};
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#endif
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