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Replaced tab by 4 spaces and adjust text
This commit is contained in:
raysan5
386
src/audio.c
386
src/audio.c
@ -1,41 +1,41 @@
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/*********************************************************************************************
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*
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* raylib.audio
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* raylib.audio
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*
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* Basic functions to manage Audio: InitAudioDevice, LoadAudioFiles, PlayAudioFiles
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*
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* Uses external lib:
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* OpenAL - Audio device management lib
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* TODO: stb_vorbis - Ogg audio files loading
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* Basic functions to manage Audio: InitAudioDevice, LoadAudioFiles, PlayAudioFiles
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*
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* Uses external lib:
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* OpenAL - Audio device management lib
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* TODO: stb_vorbis - Ogg audio files loading
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*
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* Copyright (c) 2013 Ramon Santamaria (Ray San - raysan@raysanweb.com)
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*
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* This software is provided "as-is", without any express or implied warranty. In no event
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* will the authors be held liable for any damages arising from the use of this software.
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* Copyright (c) 2013 Ramon Santamaria (Ray San - raysan@raysanweb.com)
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*
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* This software is provided "as-is", without any express or implied warranty. In no event
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* will the authors be held liable for any damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose, including commercial
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* applications, and to alter it and redistribute it freely, subject to the following restrictions:
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* Permission is granted to anyone to use this software for any purpose, including commercial
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* applications, and to alter it and redistribute it freely, subject to the following restrictions:
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||||
*
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* 1. The origin of this software must not be misrepresented; you must not claim that you
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||||
* wrote the original software. If you use this software in a product, an acknowledgment
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||||
* in the product documentation would be appreciated but is not required.
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||||
* 1. The origin of this software must not be misrepresented; you must not claim that you
|
||||
* wrote the original software. If you use this software in a product, an acknowledgment
|
||||
* in the product documentation would be appreciated but is not required.
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||||
*
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||||
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
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||||
* as being the original software.
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||||
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
|
||||
* as being the original software.
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||||
*
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* 3. This notice may not be removed or altered from any source distribution.
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* 3. This notice may not be removed or altered from any source distribution.
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*
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**********************************************************************************************/
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#include "raylib.h"
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#include <AL/al.h> // OpenAL basic header
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#include <AL/alc.h> // OpenAL context header (like OpenGL, OpenAL requires a context to work)
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#include <AL/al.h> // OpenAL basic header
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#include <AL/alc.h> // OpenAL context header (like OpenGL, OpenAL requires a context to work)
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#include <stdlib.h> // To use exit() function
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#include <stdio.h> // Used for .WAV loading
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#include <stdlib.h> // To use exit() function
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#include <stdio.h> // Used for .WAV loading
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//#include "stb_vorbis.h" // TODO: OGG loading functions
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//#include "stb_vorbis.h" // TODO: OGG loading functions
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//----------------------------------------------------------------------------------
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// Defines and Macros
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@ -48,11 +48,11 @@
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// Wave file data
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typedef struct Wave {
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unsigned char *data; // Buffer data pointer
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unsigned int sampleRate;
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unsigned int dataSize;
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short channels;
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short format;
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unsigned char *data; // Buffer data pointer
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unsigned int sampleRate;
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unsigned int dataSize;
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short channels;
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short format;
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} Wave;
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//----------------------------------------------------------------------------------
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@ -74,231 +74,231 @@ static void UnloadWAV(Wave wave);
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// Initialize audio device and context
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void InitAudioDevice()
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{
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// Open and initialize a device with default settings
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ALCdevice *device = alcOpenDevice(NULL);
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if(!device)
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{
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fprintf(stderr, "Could not open a device!\n");
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exit(1);
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}
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// Open and initialize a device with default settings
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ALCdevice *device = alcOpenDevice(NULL);
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if(!device)
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{
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fprintf(stderr, "Could not open a device!\n");
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exit(1);
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}
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ALCcontext *context = alcCreateContext(device, NULL);
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if(context == NULL || alcMakeContextCurrent(context) == ALC_FALSE)
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{
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if(context != NULL) alcDestroyContext(context);
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alcCloseDevice(device);
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fprintf(stderr, "Could not set a context!\n");
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exit(1);
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}
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ALCcontext *context = alcCreateContext(device, NULL);
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if(context == NULL || alcMakeContextCurrent(context) == ALC_FALSE)
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{
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if(context != NULL) alcDestroyContext(context);
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alcCloseDevice(device);
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fprintf(stderr, "Could not set a context!\n");
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exit(1);
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}
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printf("Opened \"%s\"\n", alcGetString(device, ALC_DEVICE_SPECIFIER));
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// Listener definition (just for 2D)
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alListener3f(AL_POSITION, 0, 0, 0);
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alListener3f(AL_VELOCITY, 0, 0, 0);
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alListener3f(AL_ORIENTATION, 0, 0, -1);
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printf("Opened \"%s\"\n", alcGetString(device, ALC_DEVICE_SPECIFIER));
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// Listener definition (just for 2D)
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alListener3f(AL_POSITION, 0, 0, 0);
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alListener3f(AL_VELOCITY, 0, 0, 0);
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alListener3f(AL_ORIENTATION, 0, 0, -1);
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}
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// Close the audio device for the current context, and destroys the context
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void CloseAudioDevice()
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{
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ALCdevice *device;
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ALCcontext *context = alcGetCurrentContext();
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if (context == NULL) return;
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ALCdevice *device;
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ALCcontext *context = alcGetCurrentContext();
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if (context == NULL) return;
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device = alcGetContextsDevice(context);
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device = alcGetContextsDevice(context);
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alcMakeContextCurrent(NULL);
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alcDestroyContext(context);
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alcCloseDevice(device);
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alcMakeContextCurrent(NULL);
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alcDestroyContext(context);
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alcCloseDevice(device);
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}
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// Load sound to memory
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Sound LoadSound(char *fileName)
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{
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Sound sound;
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// NOTE: The entire file is loaded to memory to play it all at once (no-streaming)
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// WAV file loading
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// NOTE: Buffer space is allocated inside LoadWAV, Wave must be freed
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Wave wave = LoadWAV(fileName);
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ALenum format;
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// The OpenAL format is worked out by looking at the number of channels and the bits per sample
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if (wave.channels == 1)
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{
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if (wave.sampleRate == 8 ) format = AL_FORMAT_MONO8;
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else if (wave.sampleRate == 16) format = AL_FORMAT_MONO16;
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}
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else if (wave.channels == 2)
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{
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if (wave.sampleRate == 8 ) format = AL_FORMAT_STEREO8;
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else if (wave.sampleRate == 16) format = AL_FORMAT_STEREO16;
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}
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// Create an audio source
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ALuint source;
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alGenSources(1, &source); // Generate pointer to audio source
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Sound sound;
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// NOTE: The entire file is loaded to memory to play it all at once (no-streaming)
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// WAV file loading
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// NOTE: Buffer space is allocated inside LoadWAV, Wave must be freed
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Wave wave = LoadWAV(fileName);
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ALenum format;
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// The OpenAL format is worked out by looking at the number of channels and the bits per sample
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if (wave.channels == 1)
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{
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if (wave.sampleRate == 8 ) format = AL_FORMAT_MONO8;
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else if (wave.sampleRate == 16) format = AL_FORMAT_MONO16;
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}
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else if (wave.channels == 2)
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{
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if (wave.sampleRate == 8 ) format = AL_FORMAT_STEREO8;
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else if (wave.sampleRate == 16) format = AL_FORMAT_STEREO16;
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}
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// Create an audio source
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ALuint source;
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alGenSources(1, &source); // Generate pointer to audio source
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alSourcef(source, AL_PITCH, 1);
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alSourcef(source, AL_GAIN, 1);
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alSource3f(source, AL_POSITION, 0, 0, 0);
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alSource3f(source, AL_VELOCITY, 0, 0, 0);
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alSourcei(source, AL_LOOPING, AL_FALSE);
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// Convert loaded data to OpenAL buffer
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//----------------------------------------
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ALuint buffer;
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alGenBuffers(1, &buffer); // Generate pointer to buffer
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alSourcef(source, AL_PITCH, 1);
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alSourcef(source, AL_GAIN, 1);
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alSource3f(source, AL_POSITION, 0, 0, 0);
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alSource3f(source, AL_VELOCITY, 0, 0, 0);
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alSourcei(source, AL_LOOPING, AL_FALSE);
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// Convert loaded data to OpenAL buffer
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//----------------------------------------
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ALuint buffer;
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alGenBuffers(1, &buffer); // Generate pointer to buffer
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// Upload sound data to buffer
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alBufferData(buffer, format, wave.data, wave.dataSize, wave.sampleRate);
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// Upload sound data to buffer
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alBufferData(buffer, format, wave.data, wave.dataSize, wave.sampleRate);
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// Attach sound buffer to source
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alSourcei(source, AL_BUFFER, buffer);
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// Unallocate WAV data
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UnloadWAV(wave);
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printf("Sample rate: %i\n", wave.sampleRate);
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printf("Channels: %i\n", wave.channels);
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// Attach sound buffer to source
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alSourcei(source, AL_BUFFER, buffer);
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// Unallocate WAV data
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UnloadWAV(wave);
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printf("Sample rate: %i\n", wave.sampleRate);
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printf("Channels: %i\n", wave.channels);
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printf("Format: %i\n", wave.format);
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printf("Audio file loaded...!\n");
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sound.source = source;
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sound.buffer = buffer;
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return sound;
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printf("Audio file loaded...!\n");
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sound.source = source;
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sound.buffer = buffer;
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return sound;
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}
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// Unload sound
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void UnloadSound(Sound sound)
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{
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alDeleteSources(1, &sound.source);
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alDeleteBuffers(1, &sound.buffer);
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alDeleteSources(1, &sound.source);
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alDeleteBuffers(1, &sound.buffer);
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}
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// Play a sound
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void PlaySound(Sound sound)
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{
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alSourcePlay(sound.source); // Play the sound
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printf("Playing sound!\n");
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alSourcePlay(sound.source); // Play the sound
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printf("Playing sound!\n");
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// Find the current position of the sound being played
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// NOTE: Only work when the entire file is in a single buffer
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//int byteOffset;
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//alGetSourcei(sound.source, AL_BYTE_OFFSET, &byteOffset);
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//float seconds = (float)byteOffset / sampleRate; // Number of seconds since the beginning of the sound
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// Find the current position of the sound being played
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// NOTE: Only work when the entire file is in a single buffer
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//int byteOffset;
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//alGetSourcei(sound.source, AL_BYTE_OFFSET, &byteOffset);
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//float seconds = (float)byteOffset / sampleRate; // Number of seconds since the beginning of the sound
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}
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// Play a sound with extended options
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void PlaySoundEx(Sound sound, float timePosition, bool loop)
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{
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// TODO: Review
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// Change the current position (e.g. skip some part of the sound)
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// NOTE: Only work when the entire file is in a single buffer
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//alSourcei(sound.source, AL_BYTE_OFFSET, int(position * sampleRate));
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// TODO: Review
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// Change the current position (e.g. skip some part of the sound)
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// NOTE: Only work when the entire file is in a single buffer
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//alSourcei(sound.source, AL_BYTE_OFFSET, int(position * sampleRate));
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alSourcePlay(sound.source); // Play the sound
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if (loop) alSourcei(sound.source, AL_LOOPING, AL_TRUE);
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else alSourcei(sound.source, AL_LOOPING, AL_FALSE);
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alSourcePlay(sound.source); // Play the sound
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if (loop) alSourcei(sound.source, AL_LOOPING, AL_TRUE);
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else alSourcei(sound.source, AL_LOOPING, AL_FALSE);
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}
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// Pause a sound
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void PauseSound(Sound sound)
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{
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alSourcePause(sound.source);
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alSourcePause(sound.source);
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}
|
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|
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// Stop reproducing a sound
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void StopSound(Sound sound)
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{
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alSourceStop(sound.source);
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alSourceStop(sound.source);
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}
|
||||
|
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// Load WAV file into Wave structure
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static Wave LoadWAV(char *fileName)
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{
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Wave wave;
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Wave wave;
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FILE *wavFile;
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wavFile = fopen(fileName, "rb");
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||||
|
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if (!wavFile)
|
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{
|
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printf("Could not load WAV file.\n");
|
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exit(1);
|
||||
}
|
||||
|
||||
unsigned char id[4]; // Four bytes to hold 'RIFF' and 'WAVE' (and other ids)
|
||||
|
||||
unsigned int size = 0; // File size (useless)
|
||||
|
||||
short format;
|
||||
short channels;
|
||||
short blockAlign;
|
||||
short bitsPerSample;
|
||||
|
||||
unsigned int formatLength;
|
||||
unsigned int sampleRate;
|
||||
unsigned int avgBytesSec;
|
||||
unsigned int dataSize;
|
||||
|
||||
if (!wavFile)
|
||||
{
|
||||
printf("Could not load WAV file.\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
unsigned char id[4]; // Four bytes to hold 'RIFF' and 'WAVE' (and other ids)
|
||||
|
||||
unsigned int size = 0; // File size (useless)
|
||||
|
||||
short format;
|
||||
short channels;
|
||||
short blockAlign;
|
||||
short bitsPerSample;
|
||||
|
||||
unsigned int formatLength;
|
||||
unsigned int sampleRate;
|
||||
unsigned int avgBytesSec;
|
||||
unsigned int dataSize;
|
||||
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read the first four bytes
|
||||
|
||||
if ((id[0] != 'R') || (id[1] != 'I') || (id[2] != 'F') || (id[3] != 'F'))
|
||||
{
|
||||
printf("Invalid RIFF file.\n"); // If not "RIFF" id, exit
|
||||
exit(1);
|
||||
}
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read the first four bytes
|
||||
|
||||
if ((id[0] != 'R') || (id[1] != 'I') || (id[2] != 'F') || (id[3] != 'F'))
|
||||
{
|
||||
printf("Invalid RIFF file.\n"); // If not "RIFF" id, exit
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fread(&size, sizeof(unsigned int), 1, wavFile); // Read file size
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read the next id
|
||||
|
||||
if ((id[0] != 'W') || (id[1] != 'A') || (id[2] != 'V') || (id[3] != 'E'))
|
||||
{
|
||||
printf("Invalid WAVE file.\n"); // If not "WAVE" id, exit
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read 4 bytes id "fmt "
|
||||
fread(&formatLength, sizeof(unsigned int),1,wavFile); // Read format lenght
|
||||
fread(&format, sizeof(short), 1, wavFile); // Read format tag
|
||||
fread(&channels, sizeof(short), 1, wavFile); // Read num channels (1 mono, 2 stereo)
|
||||
fread(&sampleRate, sizeof(unsigned int), 1, wavFile); // Read sample rate (44100, 22050, etc...)
|
||||
fread(&avgBytesSec, sizeof(short), 1, wavFile); // Read average bytes per second (probably won't need this)
|
||||
fread(&blockAlign, sizeof(short), 1, wavFile); // Read block alignment (probably won't need this)
|
||||
fread(&bitsPerSample, sizeof(short), 1, wavFile); // Read bits per sample (8 bit or 16 bit)
|
||||
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read 4 bytes id "data"
|
||||
fread(&dataSize, sizeof(unsigned int), 1, wavFile); // Read data size (in bytes)
|
||||
|
||||
wave.sampleRate = sampleRate;
|
||||
wave.dataSize = dataSize;
|
||||
wave.channels = channels;
|
||||
wave.format = format;
|
||||
|
||||
wave.data = (unsigned char *)malloc(sizeof(unsigned char) * dataSize); // Allocate the required bytes to store data
|
||||
|
||||
fread(wave.data, sizeof(unsigned char), dataSize, wavFile); // Read the whole sound data chunk
|
||||
|
||||
return wave;
|
||||
fread(&size, sizeof(unsigned int), 1, wavFile); // Read file size
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read the next id
|
||||
|
||||
if ((id[0] != 'W') || (id[1] != 'A') || (id[2] != 'V') || (id[3] != 'E'))
|
||||
{
|
||||
printf("Invalid WAVE file.\n"); // If not "WAVE" id, exit
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read 4 bytes id "fmt "
|
||||
fread(&formatLength, sizeof(unsigned int),1,wavFile); // Read format lenght
|
||||
fread(&format, sizeof(short), 1, wavFile); // Read format tag
|
||||
fread(&channels, sizeof(short), 1, wavFile); // Read num channels (1 mono, 2 stereo)
|
||||
fread(&sampleRate, sizeof(unsigned int), 1, wavFile); // Read sample rate (44100, 22050, etc...)
|
||||
fread(&avgBytesSec, sizeof(short), 1, wavFile); // Read average bytes per second (probably won't need this)
|
||||
fread(&blockAlign, sizeof(short), 1, wavFile); // Read block alignment (probably won't need this)
|
||||
fread(&bitsPerSample, sizeof(short), 1, wavFile); // Read bits per sample (8 bit or 16 bit)
|
||||
|
||||
fread(id, sizeof(unsigned char), 4, wavFile); // Read 4 bytes id "data"
|
||||
fread(&dataSize, sizeof(unsigned int), 1, wavFile); // Read data size (in bytes)
|
||||
|
||||
wave.sampleRate = sampleRate;
|
||||
wave.dataSize = dataSize;
|
||||
wave.channels = channels;
|
||||
wave.format = format;
|
||||
|
||||
wave.data = (unsigned char *)malloc(sizeof(unsigned char) * dataSize); // Allocate the required bytes to store data
|
||||
|
||||
fread(wave.data, sizeof(unsigned char), dataSize, wavFile); // Read the whole sound data chunk
|
||||
|
||||
return wave;
|
||||
}
|
||||
|
||||
// Unload WAV file data
|
||||
static void UnloadWAV(Wave wave)
|
||||
{
|
||||
free(wave.data);
|
||||
free(wave.data);
|
||||
}
|
||||
|
||||
// TODO: Ogg data loading
|
||||
|
||||
Reference in New Issue
Block a user