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blender/intern/SoundSystem/openal/SND_OpenALDevice.cpp
Brecht Van Lommel c8b4cf9206 2.50: 
svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r19820:HEAD

Notes:
* Game and sequencer RNA, and sequencer header are now out of date
  a bit after changes in trunk.
* I didn't know how to port these bugfixes, most likely they are
  not needed anymore.
  * Fix "duplicate strip" always increase the user count for ipo.
  * IPO pinning on sequencer strips was lost during Undo.
2009-06-08 20:08:19 +00:00

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/*
* $Id$
*
* ***** BEGIN GPL 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.
*
* 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 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"
#ifdef APPLE_FRAMEWORK_FIX
#include <al.h>
#include <alc.h>
#else
#include <AL/al.h>
#include <AL/alc.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#if defined(WIN32)
#include <io.h>
#else
#include <unistd.h>
#endif
#include <fcntl.h>
#include <signal.h>
/*************************** ALUT replacement *****************************/
/* instead of relying on alut, we just implement our own
* WAV loading functions, hopefully more reliable */
#include <stdlib.h>
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;
static void *SND_loadFileIntoMemory(const char *filename, int *len_r)
{
FILE *fp= fopen(filename, "rb");
void *data;
if (!fp) {
*len_r= -1;
return NULL;
}
fseek(fp, 0L, SEEK_END);
*len_r= ftell(fp);
fseek(fp, 0L, SEEK_SET);
data= malloc(*len_r);
if (!data) {
*len_r= -1;
return NULL;
}
if (fread(data, *len_r, 1, fp)!=1) {
*len_r= -1;
free(data);
return NULL;
}
return data;
}
#define TEST_SWITCH_INT(a) if(big_endian) { \
char s_i, *p_i; \
p_i= (char *)&(a); \
s_i=p_i[0]; p_i[0]=p_i[3]; p_i[3]=s_i; \
s_i=p_i[1]; p_i[1]=p_i[2]; p_i[2]=s_i; }
#define TEST_SWITCH_SHORT(a) if(big_endian) { \
char s_i, *p_i; \
p_i= (char *)&(a); \
s_i=p_i[0]; p_i[0]=p_i[1]; p_i[1]=s_i; }
static int stream_read(void *out, ALbyte **stream, ALsizei size, ALsizei *memsize)
{
if(size <= *memsize) {
memcpy(out, *stream, size);
return 1;
}
else {
memset(out, 0, size);
return 0;
}
}
static int stream_skip(ALbyte **stream, ALsizei size, ALsizei *memsize)
{
if(size <= *memsize) {
*stream += size;
*memsize -= size;
return 1;
}
else
return 0;
}
ALvoid SND_alutLoadWAVMemory(ALbyte *memory,ALsizei memsize,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= memory;
int test_endian= 1;
int big_endian= !((char*)&test_endian)[0];
*format=AL_FORMAT_MONO16;
*data=NULL;
*size=0;
*freq=22050;
*loop=AL_FALSE;
if(!Stream)
return;
stream_read(&FileHdr,&Stream,sizeof(WAVFileHdr_Struct),&memsize);
stream_skip(&Stream,sizeof(WAVFileHdr_Struct),&memsize);
TEST_SWITCH_INT(FileHdr.Size);
FileHdr.Size=((FileHdr.Size+1)&~1)-4;
while((FileHdr.Size!=0) && stream_read(&ChunkHdr,&Stream,sizeof(WAVChunkHdr_Struct),&memsize))
{
TEST_SWITCH_INT(ChunkHdr.Size);
stream_skip(&Stream,sizeof(WAVChunkHdr_Struct),&memsize);
if (!memcmp(ChunkHdr.Id,"fmt ",4))
{
stream_read(&FmtHdr,&Stream,sizeof(WAVFmtHdr_Struct),&memsize);
TEST_SWITCH_SHORT(FmtHdr.Format);
TEST_SWITCH_SHORT(FmtHdr.Channels);
TEST_SWITCH_INT(FmtHdr.SamplesPerSec);
TEST_SWITCH_INT(FmtHdr.BytesPerSec);
TEST_SWITCH_SHORT(FmtHdr.BlockAlign);
TEST_SWITCH_SHORT(FmtHdr.BitsPerSample);
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;
}
else
{
stream_read(&FmtExHdr,&Stream,sizeof(WAVFmtExHdr_Struct),&memsize);
TEST_SWITCH_SHORT(FmtExHdr.Size);
TEST_SWITCH_SHORT(FmtExHdr.SamplesPerBlock);
}
}
else if (!memcmp(ChunkHdr.Id,"data",4))
{
if (FmtHdr.Format==0x0001)
{
if((ALsizei)ChunkHdr.Size <= memsize)
{
*size=ChunkHdr.Size;
*data=malloc(ChunkHdr.Size+31);
if (*data) {
stream_read(*data,&Stream,ChunkHdr.Size,&memsize);
memset(((char *)*data)+ChunkHdr.Size,0,31);
if(FmtHdr.BitsPerSample == 16 && big_endian) {
int a, len= *size/2;
short *samples= (short*)*data;
for(a=0; a<len; a++) {
TEST_SWITCH_SHORT(samples[a])
}
}
}
}
}
else if (FmtHdr.Format==0x0011)
{
//IMA ADPCM
}
else if (FmtHdr.Format==0x0055)
{
//MP3 WAVE
}
}
else if (!memcmp(ChunkHdr.Id,"smpl",4))
{
stream_read(&SmplHdr,&Stream,sizeof(WAVSmplHdr_Struct),&memsize);
TEST_SWITCH_INT(SmplHdr.Manufacturer);
TEST_SWITCH_INT(SmplHdr.Product);
TEST_SWITCH_INT(SmplHdr.SamplePeriod);
TEST_SWITCH_INT(SmplHdr.Note);
TEST_SWITCH_INT(SmplHdr.FineTune);
TEST_SWITCH_INT(SmplHdr.SMPTEFormat);
TEST_SWITCH_INT(SmplHdr.SMPTEOffest);
TEST_SWITCH_INT(SmplHdr.Loops);
TEST_SWITCH_INT(SmplHdr.SamplerData);
*loop = (SmplHdr.Loops ? AL_TRUE : AL_FALSE);
}
if(!stream_skip(&Stream, ChunkHdr.Size + (ChunkHdr.Size&1), &memsize))
break;
FileHdr.Size-=(((ChunkHdr.Size+1)&~1)+8);
}
}
ALvoid SND_alutUnloadWAV(ALenum format,ALvoid *data,ALsizei size,ALsizei freq)
{
if (data)
free(data);
}
/************************ Device Implementation ****************************/
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)
{
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
}
}
}
// 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 __APPLE__
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)
{
int i;
for (i=0;i<NUM_SOURCES;i++)
m_sources[i] = 0;
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
{
// we use SDL for CD, so we create the system
SND_CDObject::CreateSystem();
}
void SND_OpenALDevice::MakeCurrent() const
{
#ifdef WIN32
alcMakeContextCurrent(m_context);
#endif
}
SND_OpenALDevice::~SND_OpenALDevice()
{
MakeCurrent();
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_buffersinitialized)
{
alDeleteBuffers(NUM_BUFFERS, m_buffers);
m_buffersinitialized = 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
if (m_device)
alcCloseDevice((ALCdevice*) m_device);
}
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)
{
bool freemem = false;
int buffer = waveslot->GetBuffer();
void* data = NULL;
char loop = 'a';
int sampleformat, bitrate, numberofchannels;
ALenum al_error = alGetError();
ALsizei samplerate, numberofsamples; // openal_2.14+
/* Give them some safe defaults just incase */
bitrate = numberofchannels = 0;
if (!(size && memlocation)) {
memlocation = SND_loadFileIntoMemory(samplename.Ptr(), &size);
freemem = true;
}
/* 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 */
SND_alutLoadWAVMemory((ALbyte*)memlocation, size, &sampleformat, &data, &numberofsamples, &samplerate, &loop);
/* put it in the buffer */
alBufferData(m_buffers[buffer], sampleformat, data, numberofsamples, samplerate);
}
if(freemem)
free(memlocation);
/* 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) */
SND_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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