Amrit Panesar
39ee821f54
changes to 380 project 4 changes to 350 project 2 Signed-off-by: Amrit Panesar <apanesar@4195tech.com>
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
// GambleKit Copyright (C) 2014 Ivan Donev
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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 Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
//
|
|
// contact: gamblekit@gmail.com
|
|
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
|
|
#include "GkSoundSource.h"
|
|
|
|
#include <string>
|
|
#include <AL\alut.h>
|
|
|
|
#pragma pack(1)
|
|
struct WAVFileHeader
|
|
{
|
|
char chunkID[4]; // "RIFF"
|
|
unsigned int chunkSize;
|
|
char format[4]; // "WAVE"
|
|
|
|
char subchunk1Id[4]; // "fmt "
|
|
unsigned int subchunk1Size;
|
|
unsigned short audioFormat; // 1 - PCM
|
|
unsigned short numChannels; // 1 - mono, 2 - stereo
|
|
unsigned int sampleRate; // 22050, 44100, etc.
|
|
unsigned int byteRate; // == SampleRate * NumChannels * BitsPerSample / 8
|
|
unsigned short blockAlign; // == NumChannels * BitsPerSample / 8. The number of bytes for one sample including
|
|
unsigned short bitsPerSample; // 8, 16, etc.
|
|
//unsigned short extraParamsSize; //if PCM does not exist
|
|
//extraParams; //variable format
|
|
|
|
//char subchunk2Id[4]; // "data"
|
|
//unsigned int subchunk2Size;
|
|
};
|
|
|
|
GkSoundSource::GkSoundSource(void)
|
|
{
|
|
alGenSources(1, &this->handle);
|
|
|
|
this->buffer = 0;
|
|
}
|
|
|
|
|
|
GkSoundSource::~GkSoundSource(void)
|
|
{
|
|
this->UnloadBuffer();
|
|
|
|
alDeleteSources(1, &this->handle);
|
|
}
|
|
|
|
void GkSoundSource::LoadFromMemory(void *wavData)
|
|
{
|
|
ALenum format;
|
|
ALvoid *data;
|
|
ALsizei size, frequency;
|
|
|
|
WAVFileHeader *header = (WAVFileHeader*)wavData;
|
|
int dataOffset = 20 + header->subchunk1Size;
|
|
while (memcmp((char*)&((char*)wavData)[dataOffset], &"data", 4) != 0)
|
|
{
|
|
dataOffset += *((int*)&(((char*)wavData)[dataOffset + 4])) + 8;
|
|
}
|
|
size = *((int*)&(((char*)wavData)[dataOffset + 4]));
|
|
data = (ALvoid*)&(((char*)wavData)[dataOffset + 8]);
|
|
format = header->numChannels == 1 ? header->bitsPerSample == 8 ? AL_FORMAT_MONO8 : AL_FORMAT_MONO16 : header->bitsPerSample == 8 ? AL_FORMAT_STEREO8 : AL_FORMAT_STEREO16;
|
|
frequency = header->sampleRate;
|
|
|
|
this->UnloadBuffer();
|
|
|
|
alGenBuffers(1, &this->buffer);
|
|
alBufferData(this->buffer, format, data, size, frequency);
|
|
|
|
alSourcei(this->handle, AL_BUFFER, this->buffer);
|
|
}
|
|
|
|
void GkSoundSource::UnloadBuffer()
|
|
{
|
|
if (this->buffer == 0)
|
|
return;
|
|
|
|
alDeleteBuffers(1, &this->buffer);
|
|
this->buffer = 0;
|
|
}
|