mirror of
https://github.com/raysan5/raylib.git
synced 2025-12-25 10:22:33 -05:00
Updated raylib to version 1.0.4
Lots of changes added, check CHANGELOG for detailed description
This commit is contained in:
raysan5
190
src/audio.c
190
src/audio.c
@ -35,6 +35,8 @@
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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 "utils.h" // rRES data decompression utility function
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//#include "stb_vorbis.h" // TODO: OGG loading functions
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//----------------------------------------------------------------------------------
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@ -52,8 +54,7 @@ typedef struct Wave {
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unsigned int sampleRate;
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unsigned int dataSize;
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short bitsPerSample;
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short channels;
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short format;
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short channels;
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} Wave;
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//----------------------------------------------------------------------------------
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@ -179,6 +180,159 @@ Sound LoadSound(char *fileName)
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return sound;
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}
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// Load sound to memory from rRES file (raylib Resource)
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Sound LoadSoundFromRES(const char *rresName, int resId)
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{
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// NOTE: rresName could be directly a char array with all the data!!! --> TODO
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Sound sound;
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bool found = false;
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char id[4]; // rRES file identifier
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unsigned char version; // rRES file version and subversion
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char useless; // rRES header reserved data
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short numRes;
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ResInfoHeader infoHeader;
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FILE *rresFile = fopen(rresName, "rb");
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if (!rresFile) printf("Error opening raylib Resource file\n");
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// Read rres file (basic file check - id)
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fread(&id[0], sizeof(char), 1, rresFile);
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fread(&id[1], sizeof(char), 1, rresFile);
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fread(&id[2], sizeof(char), 1, rresFile);
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fread(&id[3], sizeof(char), 1, rresFile);
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fread(&version, sizeof(char), 1, rresFile);
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fread(&useless, sizeof(char), 1, rresFile);
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if ((id[0] != 'r') && (id[1] != 'R') && (id[2] != 'E') &&(id[3] != 'S'))
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{
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printf("This is not a valid raylib Resource file!\n");
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exit(1);
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}
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// Read number of resources embedded
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fread(&numRes, sizeof(short), 1, rresFile);
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for (int i = 0; i < numRes; i++)
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{
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fread(&infoHeader, sizeof(ResInfoHeader), 1, rresFile);
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if (infoHeader.id == resId)
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{
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found = true;
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// Check data is of valid SOUND type
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if (infoHeader.type == 1) // SOUND data type
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{
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// TODO: Check data compression type
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// NOTE: We suppose compression type 2 (DEFLATE - default)
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// Reading SOUND parameters
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Wave wave;
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short sampleRate, bps;
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char channels, reserved;
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fread(&sampleRate, sizeof(short), 1, rresFile); // Sample rate (frequency)
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fread(&bps, sizeof(short), 1, rresFile); // Bits per sample
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fread(&channels, 1, 1, rresFile); // Channels (1 - mono, 2 - stereo)
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fread(&reserved, 1, 1, rresFile); // <reserved>
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printf("Sample rate: %i\n", (int)sampleRate);
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printf("Bits per sample: %i\n", (int)bps);
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printf("Channels: %i\n", (int)channels);
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wave.sampleRate = sampleRate;
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wave.dataSize = infoHeader.srcSize;
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wave.bitsPerSample = bps;
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wave.channels = (short)channels;
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unsigned char *data = malloc(infoHeader.size);
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fread(data, infoHeader.size, 1, rresFile);
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wave.data = DecompressData(data, infoHeader.size, infoHeader.srcSize);
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free(data);
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// Convert wave to Sound (OpenAL)
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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.bitsPerSample == 8 ) format = AL_FORMAT_MONO8;
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else if (wave.bitsPerSample == 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.bitsPerSample == 8 ) format = AL_FORMAT_STEREO8;
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else if (wave.bitsPerSample == 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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// Upload sound data to buffer
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alBufferData(buffer, format, (void*)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("Audio file loaded...!\n");
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sound.source = source;
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sound.buffer = buffer;
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}
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else
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{
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printf("Required resource do not seem to be a valid IMAGE resource\n");
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exit(2);
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}
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}
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else
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{
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// Depending on type, skip the right amount of parameters
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switch (infoHeader.type)
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{
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case 0: fseek(rresFile, 6, SEEK_CUR); break; // IMAGE: Jump 6 bytes of parameters
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case 1: fseek(rresFile, 6, SEEK_CUR); break; // SOUND: Jump 6 bytes of parameters
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case 2: fseek(rresFile, 5, SEEK_CUR); break; // MODEL: Jump 5 bytes of parameters (TODO: Review)
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case 3: break; // TEXT: No parameters
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case 4: break; // RAW: No parameters
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default: break;
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}
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// Jump DATA to read next infoHeader
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fseek(rresFile, infoHeader.size, SEEK_CUR);
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}
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}
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fclose(rresFile);
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if (!found) printf("Required resource id could not be found in the raylib Resource file!\n");
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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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@ -197,10 +351,18 @@ void PlaySound(Sound sound)
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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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//
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//int sampleRate;
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//alGetBufferi(sound.buffer, AL_FREQUENCY, &sampleRate); // AL_CHANNELS, AL_BITS (bps)
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//float seconds = (float)byteOffset / sampleRate; // Number of seconds since the beginning of the sound
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//or
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//float result;
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//alGetSourcef(sound.source, AL_SEC_OFFSET, &result); // AL_SAMPLE_OFFSET
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}
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// Play a sound with extended options
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// TODO: This function should be reviewed...
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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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@ -227,6 +389,30 @@ void StopSound(Sound sound)
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alSourceStop(sound.source);
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}
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// Check if a sound is playing
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bool IsPlaying(Sound sound)
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{
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bool playing = false;
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ALint state;
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alGetSourcei(sound.source, AL_SOURCE_STATE, &state);
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if (state == AL_PLAYING) playing = true;
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return playing;
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}
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// Set volume for a sound
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void SetVolume(Sound sound, float volume)
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{
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alSourcef(sound.source, AL_GAIN, volume);
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}
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// Set pitch for a sound
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void SetPitch(Sound sound, float pitch)
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{
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alSourcef(sound.source, AL_PITCH, pitch);
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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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