590 lines
19 KiB
C++
590 lines
19 KiB
C++
//
|
|
// KRAudioSource.cpp
|
|
// KREngine
|
|
//
|
|
// Copyright 2012 Kearwood Gilbert. All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. 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.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''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 KEARWOOD GILBERT 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.
|
|
//
|
|
// The views and conclusions contained in the software and documentation are those of the
|
|
// authors and should not be interpreted as representing official policies, either expressed
|
|
// or implied, of Kearwood Gilbert.
|
|
//
|
|
|
|
#include "KRAudioSource.h"
|
|
#include "KRContext.h"
|
|
#include "KRAudioManager.h"
|
|
#include "KRAudioSample.h"
|
|
#include "KRAudioBuffer.h"
|
|
|
|
OSStatus alcASASetSourceProc(const ALuint property, ALuint source, ALvoid *data, ALuint dataSize);
|
|
|
|
KRAudioSource::KRAudioSource(KRScene &scene, std::string name) : KRNode(scene, name)
|
|
{
|
|
m_currentBufferFrame = 0;
|
|
m_playing = false;
|
|
m_is3d = true;
|
|
m_isPrimed = false;
|
|
m_audioFile = NULL;
|
|
m_sourceID = 0;
|
|
m_gain = 1.0f;
|
|
m_pitch = 1.0f;
|
|
m_looping = false;
|
|
|
|
m_referenceDistance = 1.0f;
|
|
m_reverb = 0.0f;
|
|
m_rolloffFactor = 2.0f;
|
|
m_enable_occlusion = true;
|
|
m_enable_obstruction = true;
|
|
|
|
m_start_audio_frame = -1;
|
|
m_paused_audio_frame = 0;
|
|
}
|
|
|
|
KRAudioSource::~KRAudioSource()
|
|
{
|
|
if(m_sourceID) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alDeleteSources(1, &m_sourceID));
|
|
m_sourceID = 0;
|
|
}
|
|
while(m_audioBuffers.size()) {
|
|
delete m_audioBuffers.front();
|
|
m_audioBuffers.pop();
|
|
}
|
|
}
|
|
|
|
std::string KRAudioSource::getElementName() {
|
|
return "audio_source";
|
|
}
|
|
|
|
tinyxml2::XMLElement *KRAudioSource::saveXML( tinyxml2::XMLNode *parent)
|
|
{
|
|
tinyxml2::XMLElement *e = KRNode::saveXML(parent);
|
|
e->SetAttribute("sample", m_audio_sample_name.c_str());
|
|
e->SetAttribute("gain", m_gain);
|
|
e->SetAttribute("pitch", m_pitch);
|
|
e->SetAttribute("looping", m_looping ? "true" : "false");
|
|
e->SetAttribute("is3d", m_is3d ? "true" : "false");
|
|
e->SetAttribute("reference_distance", &m_referenceDistance);
|
|
e->SetAttribute("reverb", &m_reverb);
|
|
e->SetAttribute("rolloff_factor", &m_rolloffFactor);
|
|
e->SetAttribute("enable_occlusion", m_enable_occlusion ? "true" : "false");
|
|
e->SetAttribute("enable_obstruction", m_enable_obstruction ? "true" : "false");
|
|
return e;
|
|
}
|
|
|
|
void KRAudioSource::loadXML(tinyxml2::XMLElement *e)
|
|
{
|
|
m_audio_sample_name = e->Attribute("sample");
|
|
|
|
float gain = 1.0f;
|
|
if(e->QueryFloatAttribute("gain", &gain) != tinyxml2::XML_SUCCESS) {
|
|
gain = 1.0f;
|
|
}
|
|
setGain(gain);
|
|
|
|
float pitch = 1.0f;
|
|
if(e->QueryFloatAttribute("pitch", &pitch) != tinyxml2::XML_SUCCESS) {
|
|
pitch = 1.0f;
|
|
}
|
|
setPitch(m_pitch);
|
|
|
|
bool looping = false;
|
|
if(e->QueryBoolAttribute("looping", &looping) != tinyxml2::XML_SUCCESS) {
|
|
looping = false;
|
|
}
|
|
setLooping(looping);
|
|
|
|
bool is3d = true;
|
|
if(e->QueryBoolAttribute("is3d", &is3d) != tinyxml2::XML_SUCCESS) {
|
|
is3d = true;
|
|
}
|
|
setIs3D(is3d);
|
|
|
|
float reference_distance = 1.0f;
|
|
if(e->QueryFloatAttribute("reference_distance", &reference_distance) != tinyxml2::XML_SUCCESS) {
|
|
reference_distance = 1.0f;
|
|
}
|
|
setReferenceDistance(reference_distance);
|
|
|
|
float reverb = 0.0f;
|
|
if(e->QueryFloatAttribute("reverb", &reverb) != tinyxml2::XML_SUCCESS) {
|
|
reverb = 0.0f;
|
|
}
|
|
setReverb(reverb);
|
|
|
|
float rolloff_factor = 2.0f;
|
|
if(e->QueryFloatAttribute("rolloff_factor", &rolloff_factor) != tinyxml2::XML_SUCCESS) {
|
|
rolloff_factor = 2.0f;
|
|
}
|
|
setRolloffFactor(rolloff_factor);
|
|
|
|
m_enable_obstruction = true;
|
|
if(e->QueryBoolAttribute("enable_obstruction", &m_enable_obstruction) != tinyxml2::XML_SUCCESS) {
|
|
m_enable_obstruction = true;
|
|
}
|
|
|
|
m_enable_occlusion = true;
|
|
if(e->QueryBoolAttribute("enable_occlusion", &m_enable_occlusion) != tinyxml2::XML_SUCCESS) {
|
|
m_enable_occlusion = true;
|
|
}
|
|
|
|
KRNode::loadXML(e);
|
|
}
|
|
|
|
void KRAudioSource::prime()
|
|
{
|
|
if(!m_isPrimed) {
|
|
if(m_audioFile == NULL && m_audio_sample_name.size() != 0) {
|
|
m_audioFile = getContext().getAudioManager()->get(m_audio_sample_name);
|
|
}
|
|
if(m_audioFile) {
|
|
// Prime the buffer queue
|
|
m_nextBufferIndex = 0;
|
|
for(int i=0; i < KRENGINE_AUDIO_BUFFERS_PER_SOURCE; i++) {
|
|
queueBuffer();
|
|
}
|
|
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
|
|
// Initialize audio source
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
|
|
m_sourceID = 0;
|
|
ALDEBUG(alGenSources(1, &m_sourceID));
|
|
|
|
//alSourcei(_sourceID, AL_BUFFER, firstBuffer.bufferID);
|
|
ALDEBUG(alSourcef(m_sourceID, AL_PITCH, m_pitch));
|
|
ALDEBUG(alSourcei(m_sourceID, AL_LOOPING, m_looping && m_audioFile->getBufferCount() == 1));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_GAIN, m_gain));
|
|
}
|
|
|
|
m_isPrimed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::queueBuffer()
|
|
{
|
|
KRAudioBuffer *buffer = m_audioFile->getBuffer(m_nextBufferIndex);
|
|
m_audioBuffers.push(buffer);
|
|
ALuint buffer_ids[1];
|
|
buffer_ids[0] = buffer->getBufferID();
|
|
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
ALDEBUG(alSourceQueueBuffers(m_sourceID, 1, buffer_ids));
|
|
}
|
|
|
|
m_nextBufferIndex = (m_nextBufferIndex + 1) % m_audioFile->getBufferCount();
|
|
}
|
|
|
|
void KRAudioSource::render(KRCamera *pCamera, std::vector<KRPointLight *> &point_lights, std::vector<KRDirectionalLight *> &directional_lights, std::vector<KRSpotLight *>&spot_lights, const KRViewport &viewport, KRNode::RenderPass renderPass)
|
|
{
|
|
|
|
if(m_lod_visible <= LOD_VISIBILITY_PRESTREAM) return;
|
|
|
|
KRNode::render(pCamera, point_lights, directional_lights, spot_lights, viewport, renderPass);
|
|
|
|
bool bVisualize = false;
|
|
|
|
if(renderPass == KRNode::RENDER_PASS_FORWARD_TRANSPARENT && bVisualize) {
|
|
KRMat4 sphereModelMatrix = getModelMatrix();
|
|
|
|
KRShader *pShader = getContext().getShaderManager()->getShader("visualize_overlay", pCamera, point_lights, directional_lights, spot_lights, 0, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, renderPass);
|
|
|
|
KRVector3 rim_light;
|
|
if(getContext().getShaderManager()->selectShader(*pCamera, pShader, viewport, sphereModelMatrix, point_lights, directional_lights, spot_lights, 0, renderPass, rim_light, 0.0f)) {
|
|
|
|
// Enable additive blending
|
|
GLDEBUG(glEnable(GL_BLEND));
|
|
GLDEBUG(glBlendFunc(GL_ONE, GL_ONE));
|
|
|
|
|
|
// Disable z-buffer write
|
|
GLDEBUG(glDepthMask(GL_FALSE));
|
|
|
|
// Enable z-buffer test
|
|
GLDEBUG(glEnable(GL_DEPTH_TEST));
|
|
GLDEBUG(glDepthFunc(GL_LEQUAL));
|
|
GLDEBUG(glDepthRangef(0.0, 1.0));
|
|
std::vector<KRMesh *> sphereModels = getContext().getMeshManager()->getModel("__sphere");
|
|
if(sphereModels.size()) {
|
|
for(int i=0; i < sphereModels[0]->getSubmeshCount(); i++) {
|
|
sphereModels[0]->renderSubmesh(i, renderPass, getName(), "visualize_overlay");
|
|
}
|
|
}
|
|
|
|
// Enable alpha blending
|
|
GLDEBUG(glEnable(GL_BLEND));
|
|
GLDEBUG(glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA));
|
|
}
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::setGain(float gain)
|
|
{
|
|
m_gain = gain;
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
if(m_isPrimed) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alSourcef(m_sourceID, AL_GAIN, m_gain));
|
|
}
|
|
}
|
|
}
|
|
|
|
float KRAudioSource::getGain()
|
|
{
|
|
return m_gain;
|
|
}
|
|
|
|
void KRAudioSource::setPitch(float pitch)
|
|
{
|
|
m_pitch = pitch;
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
if(m_isPrimed ) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alSourcef(m_sourceID, AL_PITCH, m_pitch));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
float KRAudioSource::getReferenceDistance()
|
|
{
|
|
return m_referenceDistance;
|
|
}
|
|
void KRAudioSource::setReferenceDistance(float reference_distance)
|
|
{
|
|
m_referenceDistance = reference_distance;
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
if(m_isPrimed && m_is3d) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alSourcef(m_sourceID, AL_REFERENCE_DISTANCE, m_referenceDistance));
|
|
}
|
|
}
|
|
}
|
|
|
|
float KRAudioSource::getReverb()
|
|
{
|
|
return m_reverb;
|
|
}
|
|
|
|
void KRAudioSource::setReverb(float reverb)
|
|
{
|
|
m_reverb = reverb;
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
if(m_isPrimed && m_is3d) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alcASASetSourceProc(ALC_ASA_REVERB_SEND_LEVEL, m_sourceID, &m_reverb, sizeof(m_reverb)));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
float KRAudioSource::getRolloffFactor()
|
|
{
|
|
return m_rolloffFactor;
|
|
}
|
|
|
|
void KRAudioSource::setRolloffFactor(float rolloff_factor)
|
|
{
|
|
m_rolloffFactor = rolloff_factor;
|
|
if(getContext().getAudioManager()->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
if(m_isPrimed && m_is3d) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
ALDEBUG(alSourcef(m_sourceID, AL_ROLLOFF_FACTOR, m_rolloffFactor));
|
|
}
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::setLooping(bool looping)
|
|
{
|
|
// Enable or disable looping playback; Audio source must be stopped and re-started for loop mode changes to take effect
|
|
m_looping = looping;
|
|
}
|
|
|
|
bool KRAudioSource::getLooping()
|
|
{
|
|
// Returns true if the playback will automatically loop
|
|
return m_looping;
|
|
}
|
|
|
|
bool KRAudioSource::getEnableOcclusion()
|
|
{
|
|
return m_enable_occlusion;
|
|
}
|
|
|
|
void KRAudioSource::setEnableOcclusion(bool enable_occlusion)
|
|
{
|
|
m_enable_occlusion = enable_occlusion;
|
|
}
|
|
|
|
bool KRAudioSource::getEnableObstruction()
|
|
{
|
|
return m_enable_obstruction;
|
|
}
|
|
|
|
void KRAudioSource::setEnableObstruction(bool enable_obstruction)
|
|
{
|
|
m_enable_obstruction = enable_obstruction;
|
|
}
|
|
|
|
bool KRAudioSource::getIs3D()
|
|
{
|
|
return m_is3d;
|
|
}
|
|
void KRAudioSource::setIs3D(bool is3D)
|
|
{
|
|
// Audio source must be stopped and re-started for mode change to take effect
|
|
m_is3d = is3D;
|
|
}
|
|
|
|
bool KRAudioSource::hasPhysics()
|
|
{
|
|
if(KRNode::hasPhysics()) {
|
|
return true;
|
|
}
|
|
KRAudioManager *audioManager = getContext().getAudioManager();
|
|
return audioManager->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL;
|
|
}
|
|
|
|
void KRAudioSource::advanceBuffer()
|
|
{
|
|
if(m_audioBuffers.size()) {
|
|
delete m_audioBuffers.front();
|
|
m_audioBuffers.pop();
|
|
}
|
|
queueBuffer();
|
|
}
|
|
|
|
void KRAudioSource::physicsUpdate(float deltaTime)
|
|
{
|
|
KRNode::physicsUpdate(deltaTime);
|
|
|
|
KRAudioManager *audioManager = getContext().getAudioManager();
|
|
audioManager->activateAudioSource(this);
|
|
if(audioManager->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
|
|
if(m_isPrimed && m_playing) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
updatePosition();
|
|
ALint processed_count = 0;
|
|
ALDEBUG(alGetSourcei(m_sourceID, AL_BUFFERS_PROCESSED, &processed_count));
|
|
while(processed_count-- > 0) {
|
|
ALuint finished_buffer = 0;
|
|
ALDEBUG(alSourceUnqueueBuffers(m_sourceID, 1, &finished_buffer));
|
|
advanceBuffer();
|
|
}
|
|
|
|
ALint val;
|
|
// Make sure the source is still playing, and restart it if needed.
|
|
ALDEBUG(alGetSourcei(m_sourceID, AL_SOURCE_STATE, &val));
|
|
ALDEBUG(if(val != AL_PLAYING) alSourcePlay(m_sourceID));
|
|
}
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::play()
|
|
{
|
|
// Start playback of audio at the current audio sample position. If audio is already playing, this has no effect.
|
|
// play() does not automatically seek to the beginning of the sample. Call setAudioFrame( 0 ) first if you wish the playback to begin at the start of the audio sample.
|
|
// If not set to looping, audio playback ends automatically at the end of the sample
|
|
|
|
if(!m_playing) {
|
|
KRAudioManager *audioManager = getContext().getAudioManager();
|
|
assert(m_start_audio_frame == -1);
|
|
m_start_audio_frame = audioManager->getAudioFrame() - m_paused_audio_frame;
|
|
m_paused_audio_frame = -1;
|
|
audioManager->activateAudioSource(this);
|
|
if(audioManager->getAudioEngine() == KRAudioManager::KRAKEN_AUDIO_OPENAL) {
|
|
getContext().getAudioManager()->makeCurrentContext();
|
|
prime();
|
|
updatePosition();
|
|
|
|
if(m_is3d) {
|
|
ALDEBUG(alSource3f(m_sourceID, AL_VELOCITY, 0.0f, 0.0f, 0.0f));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_REFERENCE_DISTANCE, m_referenceDistance));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_ROLLOFF_FACTOR, m_rolloffFactor));
|
|
ALDEBUG(alcASASetSourceProc(ALC_ASA_REVERB_SEND_LEVEL, m_sourceID, &m_reverb, sizeof(m_reverb)));
|
|
ALDEBUG(alSourcei(m_sourceID, AL_SOURCE_RELATIVE, AL_FALSE));
|
|
} else {
|
|
ALDEBUG(alSourcei(m_sourceID, AL_SOURCE_RELATIVE, AL_TRUE));
|
|
ALDEBUG(alSource3f(m_sourceID, AL_POSITION, 0.0, 0.0, 0.0));
|
|
}
|
|
ALDEBUG(alSourcePlay(m_sourceID));
|
|
}
|
|
}
|
|
m_playing = true;
|
|
}
|
|
|
|
void KRAudioSource::stop()
|
|
{
|
|
// Stop playback of audio. If audio is already stopped, this has no effect.
|
|
// If play() is called afterwards, playback will continue at the current audio sample position.
|
|
|
|
if(m_playing) {
|
|
m_paused_audio_frame = getAudioFrame();
|
|
m_start_audio_frame = -1;
|
|
m_playing = false;
|
|
getContext().getAudioManager()->deactivateAudioSource(this);
|
|
}
|
|
}
|
|
|
|
bool KRAudioSource::isPlaying()
|
|
{
|
|
// Returns true if audio is playing. Will return false if a non-looped playback has reached the end of the audio sample.
|
|
|
|
return m_playing;
|
|
}
|
|
|
|
|
|
void KRAudioSource::setSample(const std::string &sound_name)
|
|
{
|
|
m_audio_sample_name = sound_name;
|
|
}
|
|
|
|
std::string KRAudioSource::getSample()
|
|
{
|
|
return m_audio_sample_name;
|
|
}
|
|
|
|
KRAudioSample *KRAudioSource::getAudioSample()
|
|
{
|
|
if(m_audioFile == NULL && m_audio_sample_name.size() != 0) {
|
|
m_audioFile = getContext().getAudioManager()->get(m_audio_sample_name);
|
|
}
|
|
return m_audioFile;
|
|
}
|
|
|
|
void KRAudioSource::updatePosition()
|
|
{
|
|
if(m_is3d) {
|
|
ALfloat occlusion = 0.0f; // type ALfloat -100.0 db (most occlusion) - 0.0 db (no occlusion, 0.0 default)
|
|
ALfloat obstruction = 0.0f; // type ALfloat -100.0 db (most obstruction) - 0.0 db (no obstruction, 0.0 default)
|
|
|
|
KRVector3 worldPosition = getWorldTranslation();
|
|
ALDEBUG(alSource3f(m_sourceID, AL_POSITION, worldPosition.x, worldPosition.y, worldPosition.z));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_GAIN, m_gain));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_MIN_GAIN, 0.0));
|
|
ALDEBUG(alSourcef(m_sourceID, AL_MAX_GAIN, 1.0));
|
|
|
|
ALDEBUG(alcASASetSourceProc(ALC_ASA_OCCLUSION, m_sourceID, &occlusion, sizeof(occlusion)));
|
|
ALDEBUG(alcASASetSourceProc(ALC_ASA_OBSTRUCTION, m_sourceID, &obstruction, sizeof(obstruction)));
|
|
ALDEBUG(alcASASetSourceProc(ALC_ASA_REVERB_SEND_LEVEL, m_sourceID, &m_reverb, sizeof(m_reverb)));
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::advanceFrames(int frame_count)
|
|
{
|
|
m_currentBufferFrame += frame_count;
|
|
|
|
KRAudioBuffer *buffer = getBuffer();
|
|
while(buffer != NULL && m_currentBufferFrame >= buffer->getFrameCount()) {
|
|
m_currentBufferFrame -= buffer->getFrameCount();
|
|
advanceBuffer();
|
|
buffer = getBuffer();
|
|
}
|
|
|
|
if(buffer == NULL) {
|
|
m_currentBufferFrame = 0;
|
|
stop();
|
|
}
|
|
}
|
|
|
|
KRAudioBuffer *KRAudioSource::getBuffer()
|
|
{
|
|
if(m_playing) {
|
|
prime();
|
|
return m_audioBuffers.front();
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
int KRAudioSource::getBufferFrame()
|
|
{
|
|
return m_currentBufferFrame;
|
|
}
|
|
|
|
__int64_t KRAudioSource::getAudioFrame()
|
|
{
|
|
// Returns the audio playback position in units of integer audio frames.
|
|
|
|
if(m_playing) {
|
|
return getContext().getAudioManager()->getAudioFrame() - m_start_audio_frame;
|
|
} else {
|
|
return m_paused_audio_frame;
|
|
}
|
|
}
|
|
|
|
void KRAudioSource::setAudioFrame(__int64_t next_frame)
|
|
{
|
|
// Sets the audio playback position with units of integer audio frames.
|
|
if(m_playing) {
|
|
m_start_audio_frame = getContext().getAudioManager()->getAudioFrame() - next_frame;
|
|
} else {
|
|
m_paused_audio_frame = next_frame;
|
|
}
|
|
}
|
|
|
|
|
|
float KRAudioSource::getAudioTime()
|
|
{
|
|
// Gets the audio playback position with units of floating point seconds.
|
|
|
|
return getAudioFrame() / 44100.0f;
|
|
}
|
|
|
|
void KRAudioSource::setAudioTime(float new_position)
|
|
{
|
|
// Sets the audio playback position with units of floating point seconds.
|
|
setAudioFrame(new_position * 44100.0f);
|
|
}
|
|
|
|
void KRAudioSource::sample(int frame_count, int channel, float *buffer, float gain)
|
|
{
|
|
KRAudioSample *source_sample = getAudioSample();
|
|
if(source_sample && m_playing) {
|
|
__int64_t next_frame = getAudioFrame();
|
|
source_sample->sample(next_frame, frame_count, channel, buffer, gain, m_looping);
|
|
if(!m_looping && next_frame > source_sample->getFrameCount()) {
|
|
stop();
|
|
}
|
|
} else {
|
|
memset(buffer, 0, sizeof(float) * frame_count);
|
|
}
|
|
}
|
|
|
|
OSStatus alcASASetSourceProc(const ALuint property, ALuint source, ALvoid *data, ALuint dataSize)
|
|
{
|
|
OSStatus err = noErr;
|
|
static alcASASetSourceProcPtr proc = NULL;
|
|
|
|
if (proc == NULL) {
|
|
proc = (alcASASetSourceProcPtr) alcGetProcAddress(NULL, (const ALCchar*) "alcASASetSource");
|
|
}
|
|
|
|
if (proc)
|
|
err = proc(property, source, data, dataSize);
|
|
return (err);
|
|
}
|