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blender/intern/SoundSystem/openal/SND_OpenALDevice.cpp

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/*
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
* SND_OpenALDevice derived from SND_IAudioDevice
*/
#ifdef WIN32
#pragma warning (disable:4786) // get rid of stupid stl-visual compiler debug warning
#endif //WIN32
#include "SND_OpenALDevice.h"
#ifndef __APPLE__
#include "SND_SDLCDDevice.h"
#endif
#include "SoundDefines.h"
#include "SND_Utils.h"
#include <AL/al.h>
#include <AL/alc.h>
#include <AL/alut.h>
#include <stdio.h>
#include <stdlib.h>
#if defined(WIN32)
#include <io.h>
#else
#include <unistd.h>
#endif
#include <fcntl.h>
#include <signal.h>
/* untill openal gets unified we need this hack for non-windows systems */
#if !defined(WIN32) && !defined(ALC_MAJOR_VERSION)
#include <malloc.h>
ALvoid alutLoadWAVMemory(ALbyte *memory,ALenum *format,ALvoid **data,ALsizei *size,ALsizei *freq,ALboolean *loop);
ALvoid alutUnloadWAV(ALenum format,ALvoid *data,ALsizei size,ALsizei freq);
typedef struct /* WAV File-header */
{
ALubyte Id[4];
ALsizei Size;
ALubyte Type[4];
} WAVFileHdr_Struct;
typedef struct /* WAV Fmt-header */
{
ALushort Format;
ALushort Channels;
ALuint SamplesPerSec;
ALuint BytesPerSec;
ALushort BlockAlign;
ALushort BitsPerSample;
} WAVFmtHdr_Struct;
typedef struct /* WAV FmtEx-header */
{
ALushort Size;
ALushort SamplesPerBlock;
} WAVFmtExHdr_Struct;
typedef struct /* WAV Smpl-header */
{
ALuint Manufacturer;
ALuint Product;
ALuint SamplePeriod;
ALuint Note;
ALuint FineTune;
ALuint SMPTEFormat;
ALuint SMPTEOffest;
ALuint Loops;
ALuint SamplerData;
struct
{
ALuint Identifier;
ALuint Type;
ALuint Start;
ALuint End;
ALuint Fraction;
ALuint Count;
} Loop[1];
} WAVSmplHdr_Struct;
typedef struct /* WAV Chunk-header */
{
ALubyte Id[4];
ALuint Size;
} WAVChunkHdr_Struct;
ALvoid alutLoadWAVMemory(ALbyte *memory,ALenum *format,ALvoid **data,ALsizei *size,ALsizei *freq,ALboolean *loop)
{
WAVChunkHdr_Struct ChunkHdr;
WAVFmtExHdr_Struct FmtExHdr;
WAVFileHdr_Struct FileHdr;
WAVSmplHdr_Struct SmplHdr;
WAVFmtHdr_Struct FmtHdr;
ALbyte *Stream;
*format=AL_FORMAT_MONO16;
*data=NULL;
*size=0;
*freq=22050;
*loop=AL_FALSE;
if (memory)
{
Stream=memory;
if (Stream)
{
memcpy(&FileHdr,Stream,sizeof(WAVFileHdr_Struct));
Stream+=sizeof(WAVFileHdr_Struct);
FileHdr.Size=((FileHdr.Size+1)&~1)-4;
while ((FileHdr.Size!=0)&&(memcpy(&ChunkHdr,Stream,sizeof(WAVChunkHdr_Struct))))
{
Stream+=sizeof(WAVChunkHdr_Struct);
if (!memcmp(ChunkHdr.Id,"fmt ",4))
{
memcpy(&FmtHdr,Stream,sizeof(WAVFmtHdr_Struct));
if (FmtHdr.Format==0x0001)
{
*format=(FmtHdr.Channels==1?
(FmtHdr.BitsPerSample==8?AL_FORMAT_MONO8:AL_FORMAT_MONO16):
(FmtHdr.BitsPerSample==8?AL_FORMAT_STEREO8:AL_FORMAT_STEREO16));
*freq=FmtHdr.SamplesPerSec;
Stream+=ChunkHdr.Size;
}
else
{
memcpy(&FmtExHdr,Stream,sizeof(WAVFmtExHdr_Struct));
Stream+=ChunkHdr.Size;
}
}
else if (!memcmp(ChunkHdr.Id,"data",4))
{
if (FmtHdr.Format==0x0001)
{
*size=ChunkHdr.Size;
*data=malloc(ChunkHdr.Size+31);
if (*data) memcpy(*data,Stream,ChunkHdr.Size);
memset(((char *)*data)+ChunkHdr.Size,0,31);
Stream+=ChunkHdr.Size;
}
else if (FmtHdr.Format==0x0011)
{
//IMA ADPCM
}
else if (FmtHdr.Format==0x0055)
{
//MP3 WAVE
}
}
else if (!memcmp(ChunkHdr.Id,"smpl",4))
{
memcpy(&SmplHdr,Stream,sizeof(WAVSmplHdr_Struct));
*loop = (SmplHdr.Loops ? AL_TRUE : AL_FALSE);
Stream+=ChunkHdr.Size;
}
else Stream+=ChunkHdr.Size;
Stream+=ChunkHdr.Size&1;
FileHdr.Size-=(((ChunkHdr.Size+1)&~1)+8);
}
}
}
}
ALvoid alutUnloadWAV(ALenum format,ALvoid *data,ALsizei size,ALsizei freq)
{
if (data)
free(data);
}
#endif /* WIN32 */
#ifdef __APPLE__
#define OUDE_OPENAL 1
#endif
SND_OpenALDevice::SND_OpenALDevice()
: SND_AudioDevice(),
m_context(NULL),
m_device(NULL)
{
/* Removed the functionality for checking if noaudio was provided on */
/* the commandline. */
m_audio = true;
m_context = NULL;
m_buffersinitialized = false;
m_sourcesinitialized = false;
// let's check if we can get openal to initialize...
if (m_audio)
{
#ifdef OUDE_OPENAL
m_audio = true; // openal_2.12
alutInit(NULL, NULL); // openal_2.12
#else
m_audio = false;
ALCdevice *dev = alcOpenDevice(NULL);
if (dev) {
m_context = alcCreateContext(dev, NULL);
if (m_context) {
#ifdef AL_VERSION_1_1
alcMakeContextCurrent((ALCcontext*)m_context);
#else
alcMakeContextCurrent(m_context);
#endif
m_audio = true;
m_device = dev;
#ifdef __linux__
/*
* SIGHUP Hack:
*
* On Linux, alcDestroyContext generates a SIGHUP (Hangup) when killing the OpenAL
* mixer thread, which kills Blender.
*
* So we set the signal to ignore....
*
* TODO: check if this applies to other platforms.
*
*/
signal(SIGHUP, SIG_IGN);
#endif
}
}
#endif
}
// then try to generate some buffers
if (m_audio)
{
// let openal generate its buffers
alGenBuffers(NUM_BUFFERS, m_buffers);
m_buffersinitialized = true;
for (int i = 0; i < NUM_BUFFERS; i++)
{
if (!alIsBuffer(m_buffers[i]))
{
//printf("\n\n WARNING: OpenAL returned with an error. Continuing without audio.\n\n");
m_audio = false;
break;
}
}
}
// next: the sources
if (m_audio)
{
#ifdef OUDE_OPENAL
ALenum alc_error = ALC_NO_ERROR; // openal_2.12
#elif defined(_WIN32)
// alcGetError has no arguments on windows
ALenum alc_error = alcGetError(); // openal_2.14+
#else
ALenum alc_error = alcGetError(NULL); // openal_2.14+
#endif
// let openal generate its sources
if (alc_error == ALC_NO_ERROR)
{
alGenSources(NUM_SOURCES, m_sources);
m_sourcesinitialized = true;
}
}
// let's get us a wavecache
if (m_audio)
{
m_wavecache = new SND_WaveCache();
}
#ifndef __APPLE__
m_cdrom = new SND_SDLCDDevice();
#endif
}
void SND_OpenALDevice::UseCD(void) const
{
// only fmod has CD support, so only create it here
SND_CDObject::CreateSystem();
}
void SND_OpenALDevice::MakeCurrent() const
{
#ifdef WIN32
alcMakeContextCurrent(m_context);
#endif
}
SND_OpenALDevice::~SND_OpenALDevice()
{
MakeCurrent();
if (m_buffersinitialized)
{
alDeleteBuffers(NUM_BUFFERS, m_buffers);
m_buffersinitialized = false;
}
if (m_sourcesinitialized)
{
for (int i = 0; i < NUM_SOURCES; i++)
alSourceStop(m_sources[i]);
alDeleteSources(NUM_SOURCES, m_sources);
m_sourcesinitialized = false;
}
if (m_context) {
MakeCurrent();
#ifdef AL_VERSION_1_1
alcDestroyContext((ALCcontext*)m_context);
#else
alcDestroyContext(m_context);
#endif
m_context = NULL;
}
#ifdef __linux__
// restore the signal state above.
signal(SIGHUP, SIG_DFL);
#endif
// let's see if we used the cd. if not, just leave it alone
SND_CDObject* pCD = SND_CDObject::Instance();
if (pCD)
{
this->StopCD();
SND_CDObject::DisposeSystem();
}
#ifndef __APPLE__
if (m_cdrom)
delete m_cdrom;
#endif
#ifdef OUDE_OPENAL
if (m_audio)
alutExit();
#else
if (m_device)
alcCloseDevice((ALCdevice*) m_device);
#endif
}
SND_WaveSlot* SND_OpenALDevice::LoadSample(const STR_String& name,
void* memlocation,
int size)
{
SND_WaveSlot* waveslot = NULL;
STR_String samplename = name;
if (m_audio)
{
/* create the waveslot */
waveslot = m_wavecache->GetWaveSlot(samplename);
/* do we support this sample? */
if (SND_IsSampleValid(name, memlocation))
{
if (waveslot)
{
int buffer = waveslot->GetBuffer();
void* data = NULL;
#ifndef __APPLE__
char loop = 'a';
#endif
int sampleformat, bitrate, numberofchannels;
ALenum al_error = alGetError();
#ifdef OUDE_OPENAL
ALsizei samplerate, numberofsamples; // openal_2.12
#else
int samplerate, numberofsamples; // openal_2.14+
#endif
/* Give them some safe defaults just incase */
bitrate = numberofchannels = 0;
/* load the sample from memory? */
if (size && memlocation)
{
waveslot->SetFileSize(size);
/* what was (our) buffer? */
int buffer = waveslot->GetBuffer();
/* get some info out of the sample */
SND_GetSampleInfo((signed char*)memlocation, waveslot);
numberofchannels = SND_GetNumberOfChannels(memlocation);
bitrate = SND_GetBitRate(memlocation);
/* load the sample into openal */
#if defined(OUDE_OPENAL) || defined (__APPLE__)
alutLoadWAVMemory((char*)memlocation, &sampleformat, &data, &numberofsamples, &samplerate); // openal_2.12
#else
#ifdef AL_VERSION_1_1
alutLoadWAVMemory((ALbyte*)memlocation, &sampleformat, &data, &numberofsamples, &samplerate, &loop);// openal_2.14+
#else
alutLoadWAVMemory((signed char*)memlocation, &sampleformat, &data, &numberofsamples, &samplerate, &loop);// openal_2.14+
#endif
#endif
/* put it in the buffer */
alBufferData(m_buffers[buffer], sampleformat, data, numberofsamples, samplerate);
}
/* or from file? */
else
{
#ifdef __APPLE__
alutLoadWAVFile((ALbyte *)samplename.Ptr(), &sampleformat, &data, &numberofsamples, &samplerate);
#else
alutLoadWAVFile((ALbyte *)samplename.Ptr(), &sampleformat, &data, &numberofsamples, &samplerate, &loop);
#endif
/* put it in the buffer */
alBufferData(m_buffers[buffer], sampleformat, data, numberofsamples, samplerate);
}
/* fill the waveslot with info */
al_error = alGetError();
if (al_error == AL_NO_ERROR && m_buffers[buffer])
{
waveslot->SetData(data);
waveslot->SetSampleFormat(sampleformat);
waveslot->SetNumberOfChannels(numberofchannels);
waveslot->SetSampleRate(samplerate);
waveslot->SetBitRate(bitrate);
waveslot->SetNumberOfSamples(numberofsamples);
/* if the loading succeeded, mark the waveslot */
waveslot->SetLoaded(true);
}
else
{
/* or when it failed, free the waveslot */
m_wavecache->RemoveSample(waveslot->GetSampleName(), waveslot->GetBuffer());
waveslot = NULL;
}
/* and free the original stuff (copy was made in openal) */
alutUnloadWAV(sampleformat, data, numberofsamples, samplerate);
}
}
else
{
/* sample not supported, remove waveslot */
m_wavecache->RemoveSample(waveslot->GetSampleName(), waveslot->GetBuffer());
waveslot = NULL;
}
}
return waveslot;
}
// listener's and general stuff //////////////////////////////////////////////////////
/* sets the global dopplervelocity */
void SND_OpenALDevice::SetDopplerVelocity(MT_Scalar dopplervelocity) const
{
alDopplerVelocity ((float)dopplervelocity);
}
/* sets the global dopplerfactor */
void SND_OpenALDevice::SetDopplerFactor(MT_Scalar dopplerfactor) const
{
alDopplerFactor ((float)dopplerfactor);
}
/* sets the global rolloff factor */
void SND_OpenALDevice::SetListenerRollOffFactor(MT_Scalar rollofffactor) const
{
// not implemented in openal
}
void SND_OpenALDevice::NextFrame() const
{
// CD
#ifndef __APPLE__
m_cdrom->NextFrame();
#endif
// not needed by openal
}
// set the gain for the listener
void SND_OpenALDevice::SetListenerGain(float gain) const
{
alListenerf (AL_GAIN, gain);
}
void SND_OpenALDevice::InitListener()
{
// initialize the listener with these values that won't change
// (as long as we can have only one listener)
// now we can superimpose all listeners on each other (for they
// have the same settings)
float lispos[3] = {0,0,0};
float lisvel[3] = {0,0,0};
#ifdef WIN32
float lisori[6] = {0,1,0,0,0,1};
#else
float lisori[6] = {0,0,1,0,-1,0};
#endif
alListenerfv(AL_POSITION, lispos);
alListenerfv(AL_VELOCITY, lisvel);
alListenerfv(AL_ORIENTATION, lisori);
}
// source playstate stuff ////////////////////////////////////////////////////////////
/* sets the buffer */
void SND_OpenALDevice::SetObjectBuffer(int id, unsigned int buffer)
{
alSourcei (m_sources[id], AL_BUFFER, m_buffers[buffer]);
}
// check if the sound's still playing
int SND_OpenALDevice::GetPlayState(int id)
{
int alstate = 0;
int result = 0;
#ifdef __APPLE__
alGetSourcei(m_sources[id], AL_SOURCE_STATE, &alstate);
#else
alGetSourceiv(m_sources[id], AL_SOURCE_STATE, &alstate);
#endif
switch(alstate)
{
case AL_INITIAL:
{
result = SND_INITIAL;
break;
}
case AL_PLAYING:
{
result = SND_PLAYING;
break;
}
case AL_PAUSED:
{
result = SND_PAUSED;
break;
}
case AL_STOPPED:
{
result = SND_STOPPED;
break;
}
default:
result = SND_UNKNOWN;
}
return result;
}
// make the source play
void SND_OpenALDevice::PlayObject(int id)
{
alSourcePlay(m_sources[id]);
}
// make the source stop
void SND_OpenALDevice::StopObject(int id) const
{
float obpos[3] = {0,0,0};
float obvel[3] = {0,0,0};
alSourcefv(m_sources[id], AL_POSITION, obpos);
alSourcefv(m_sources[id], AL_VELOCITY, obvel);
alSourcef(m_sources[id], AL_GAIN, 1.0);
alSourcef(m_sources[id], AL_PITCH, 1.0);
alSourcei(m_sources[id], AL_LOOPING, AL_FALSE);
alSourceStop(m_sources[id]);
}
// stop all sources
void SND_OpenALDevice::StopAllObjects()
{
alSourceStopv(NUM_SOURCES, m_sources);
}
// pause the source
void SND_OpenALDevice::PauseObject(int id) const
{
alSourcePause(m_sources[id]);
}
// source properties stuff ////////////////////////////////////////////////////////////
// give openal the object's pitch
void SND_OpenALDevice::SetObjectPitch(int id, MT_Scalar pitch) const
{
alSourcef (m_sources[id], AL_PITCH, (float)pitch);
}
// give openal the object's gain
void SND_OpenALDevice::SetObjectGain(int id, MT_Scalar gain) const
{
alSourcef (m_sources[id], AL_GAIN, (float)gain);
}
// give openal the object's looping
void SND_OpenALDevice::SetObjectLoop(int id, unsigned int loopmode) const
{
if (loopmode == SND_LOOP_OFF)
{
//printf("%d - ", id);
alSourcei (m_sources[id], AL_LOOPING, AL_FALSE);
}
else
alSourcei (m_sources[id], AL_LOOPING, AL_TRUE);
}
void SND_OpenALDevice::SetObjectLoopPoints(int id, unsigned int loopstart, unsigned int loopend) const
{
}
void SND_OpenALDevice::SetObjectMinGain(int id, MT_Scalar mingain) const
{
alSourcef (m_sources[id], AL_MIN_GAIN, (float)mingain);
}
void SND_OpenALDevice::SetObjectMaxGain(int id, MT_Scalar maxgain) const
{
alSourcef (m_sources[id], AL_MAX_GAIN, (float)maxgain);
}
void SND_OpenALDevice::SetObjectRollOffFactor(int id, MT_Scalar rollofffactor) const
{
alSourcef (m_sources[id], AL_ROLLOFF_FACTOR, (float)rollofffactor);
}
void SND_OpenALDevice::SetObjectReferenceDistance(int id, MT_Scalar referencedistance) const
{
alSourcef (m_sources[id], AL_REFERENCE_DISTANCE, (float)referencedistance);
}
// give openal the object's position
void SND_OpenALDevice::ObjectIs2D(int id) const
{
float obpos[3] = {0,0,0};
float obvel[3] = {0,0,0};
alSourcefv(m_sources[id], AL_POSITION, obpos);
alSourcefv(m_sources[id], AL_VELOCITY, obvel);
}
void SND_OpenALDevice::SetObjectTransform(int id,
const MT_Vector3& position,
const MT_Vector3& velocity,
const MT_Matrix3x3& orientation,
const MT_Vector3& lisposition,
const MT_Scalar& rollofffactor) const
{
float obpos[3];
float obvel[3];
obpos[0] = (float)position[0] * (float)rollofffactor; //x (l/r)
obpos[1] = (float)position[1] * (float)rollofffactor;
obpos[2] = (float)position[2] * (float)rollofffactor;
alSourcefv(m_sources[id], AL_POSITION, obpos);
velocity.getValue(obvel);
alSourcefv(m_sources[id], AL_VELOCITY, obvel);
}
void SND_OpenALDevice::PlayCD(int track) const
{
#ifndef __APPLE__
m_cdrom->PlayCD(track);
#endif
}
void SND_OpenALDevice::PauseCD(bool pause) const
{
#ifndef __APPLE__
m_cdrom->PauseCD(pause);
#endif
}
void SND_OpenALDevice::StopCD() const
{
#ifndef __APPLE__
SND_CDObject* pCD = SND_CDObject::Instance();
if (pCD && pCD->GetUsed())
{
m_cdrom->StopCD();
}
#endif
}
void SND_OpenALDevice::SetCDPlaymode(int playmode) const
{
#ifndef __APPLE__
m_cdrom->SetCDPlaymode(playmode);
#endif
}
void SND_OpenALDevice::SetCDGain(MT_Scalar gain) const
{
#ifndef __APPLE__
m_cdrom->SetCDGain(gain);
#endif
}
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