/********************************************************************************************** * * raylib.audio - Basic funtionality to work with audio * * FEATURES: * - Manage audio device (init/close) * - Load and unload audio files * - Format wave data (sample rate, size, channels) * - Play/Stop/Pause/Resume loaded audio * - Manage mixing channels * - Manage raw audio context * * CONFIGURATION: * * #define AUDIO_STANDALONE * Define to use the module as standalone library (independently of raylib). * Required types and functions are defined in the same module. * * #define SUPPORT_FILEFORMAT_WAV * #define SUPPORT_FILEFORMAT_OGG * #define SUPPORT_FILEFORMAT_XM * #define SUPPORT_FILEFORMAT_MOD * #define SUPPORT_FILEFORMAT_FLAC * #define SUPPORT_FILEFORMAT_MP3 * Selected desired fileformats to be supported for loading. Some of those formats are * supported by default, to remove support, just comment unrequired #define in this module * * LIMITATIONS (only OpenAL Soft): * Only up to two channels supported: MONO and STEREO (for additional channels, use AL_EXT_MCFORMATS) * Only the following sample sizes supported: 8bit PCM, 16bit PCM, 32-bit float PCM (using AL_EXT_FLOAT32) * * DEPENDENCIES: * mini_al - Audio device/context management (https://github.com/dr-soft/mini_al) * stb_vorbis - OGG audio files loading (http://www.nothings.org/stb_vorbis/) * jar_xm - XM module file loading * jar_mod - MOD audio file loading * dr_flac - FLAC audio file loading * * *OpenAL Soft - Audio device management, still used on HTML5 and OSX platforms * * CONTRIBUTORS: * David Reid (github: @mackron) (Nov. 2017): * - Complete port to mini_al library * * Joshua Reisenauer (github: @kd7tck) (2015) * - XM audio module support (jar_xm) * - MOD audio module support (jar_mod) * - Mixing channels support * - Raw audio context support * * * LICENSE: zlib/libpng * * Copyright (c) 2014-2018 Ramon Santamaria (@raysan5) * * This software is provided "as-is", without any express or implied warranty. In no event * will the authors be held liable for any damages arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, including commercial * applications, and to alter it and redistribute it freely, subject to the following restrictions: * * 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. * * 2. Altered source versions must be plainly marked as such, and must not be misrepresented * as being the original software. * * 3. This notice may not be removed or altered from any source distribution. * **********************************************************************************************/ #if defined(AUDIO_STANDALONE) #include "audio.h" #include // Required for: va_list, va_start(), vfprintf(), va_end() #else #include "raylib.h" // Declares module functions // Check if config flags have been externally provided on compilation line #if !defined(EXTERNAL_CONFIG_FLAGS) #include "config.h" // Defines module configuration flags #endif #include "utils.h" // Required for: fopen() Android mapping #endif #include "external/mini_al.h" // mini_al audio library // NOTE: Cannot be implement here because it conflicts with // Win32 APIs: Rectangle, CloseWindow(), ShowCursor(), PlaySoundA() #include // Required for: malloc(), free() #include // Required for: strcmp(), strncmp() #include // Required for: FILE, fopen(), fclose(), fread() #if defined(SUPPORT_FILEFORMAT_OGG) #define STB_VORBIS_IMPLEMENTATION #include "external/stb_vorbis.h" // OGG loading functions #endif #if defined(SUPPORT_FILEFORMAT_XM) #define JAR_XM_IMPLEMENTATION #include "external/jar_xm.h" // XM loading functions #endif #if defined(SUPPORT_FILEFORMAT_MOD) #define JAR_MOD_IMPLEMENTATION #include "external/jar_mod.h" // MOD loading functions #endif #if defined(SUPPORT_FILEFORMAT_FLAC) #define DR_FLAC_IMPLEMENTATION #define DR_FLAC_NO_WIN32_IO #include "external/dr_flac.h" // FLAC loading functions #endif #if defined(SUPPORT_FILEFORMAT_MP3) #define DR_MP3_IMPLEMENTATION #include "external/dr_mp3.h" // MP3 loading functions #endif #if defined(_MSC_VER) #undef bool #endif //---------------------------------------------------------------------------------- // Defines and Macros //---------------------------------------------------------------------------------- #define MAX_STREAM_BUFFERS 2 // Number of buffers for each audio stream // NOTE: Music buffer size is defined by number of samples, independent of sample size and channels number // After some math, considering a sampleRate of 48000, a buffer refill rate of 1/60 seconds // and double-buffering system, I concluded that a 4096 samples buffer should be enough // In case of music-stalls, just increase this number #define AUDIO_BUFFER_SIZE 4096 // PCM data samples (i.e. 16bit, Mono: 8Kb) //---------------------------------------------------------------------------------- // Types and Structures Definition //---------------------------------------------------------------------------------- typedef enum { MUSIC_AUDIO_OGG = 0, MUSIC_AUDIO_FLAC, MUSIC_AUDIO_MP3, MUSIC_MODULE_XM, MUSIC_MODULE_MOD } MusicContextType; // Music type (file streaming from memory) typedef struct MusicData { MusicContextType ctxType; // Type of music context #if defined(SUPPORT_FILEFORMAT_OGG) stb_vorbis *ctxOgg; // OGG audio context #endif #if defined(SUPPORT_FILEFORMAT_FLAC) drflac *ctxFlac; // FLAC audio context #endif #if defined(SUPPORT_FILEFORMAT_MP3) drmp3 ctxMp3; // MP3 audio context #endif #if defined(SUPPORT_FILEFORMAT_XM) jar_xm_context_t *ctxXm; // XM chiptune context #endif #if defined(SUPPORT_FILEFORMAT_MOD) jar_mod_context_t ctxMod; // MOD chiptune context #endif AudioStream stream; // Audio stream (double buffering) int loopCount; // Loops count (times music repeats), -1 means infinite loop unsigned int totalSamples; // Total number of samples unsigned int samplesLeft; // Number of samples left to end } MusicData; #if defined(AUDIO_STANDALONE) typedef enum { LOG_INFO = 0, LOG_ERROR, LOG_WARNING, LOG_DEBUG, LOG_OTHER } TraceLogType; #endif //---------------------------------------------------------------------------------- // Global Variables Definition //---------------------------------------------------------------------------------- // ... //---------------------------------------------------------------------------------- // Module specific Functions Declaration //---------------------------------------------------------------------------------- #if defined(SUPPORT_FILEFORMAT_WAV) static Wave LoadWAV(const char *fileName); // Load WAV file static int SaveWAV(Wave wave, const char *fileName); // Save wave data as WAV file #endif #if defined(SUPPORT_FILEFORMAT_OGG) static Wave LoadOGG(const char *fileName); // Load OGG file #endif #if defined(SUPPORT_FILEFORMAT_FLAC) static Wave LoadFLAC(const char *fileName); // Load FLAC file #endif #if defined(SUPPORT_FILEFORMAT_MP3) static Wave LoadMP3(const char *fileName); // Load MP3 file #endif #if defined(AUDIO_STANDALONE) bool IsFileExtension(const char *fileName, const char *ext); // Check file extension void TraceLog(int msgType, const char *text, ...); // Show trace log messages (LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_DEBUG) #endif //---------------------------------------------------------------------------------- // mini_al AudioBuffer Functionality //---------------------------------------------------------------------------------- #define DEVICE_FORMAT mal_format_f32 #define DEVICE_CHANNELS 2 #define DEVICE_SAMPLE_RATE 44100 typedef enum { AUDIO_BUFFER_USAGE_STATIC = 0, AUDIO_BUFFER_USAGE_STREAM } AudioBufferUsage; // Audio buffer structure // NOTE: Slightly different logic is used when feeding data to the playback device depending on whether or not data is streamed typedef struct AudioBuffer AudioBuffer; struct AudioBuffer { mal_dsp dsp; // Required for format conversion float volume; float pitch; bool playing; bool paused; bool looping; // Always true for AudioStreams int usage; // AudioBufferUsage type bool isSubBufferProcessed[2]; unsigned int frameCursorPos; unsigned int bufferSizeInFrames; AudioBuffer *next; AudioBuffer *prev; unsigned char buffer[1]; }; // mini_al global variables static mal_context context; static mal_device device; static mal_mutex audioLock; static bool isAudioInitialized = MAL_FALSE; static float masterVolume = 1.0f; // Audio buffers are tracked in a linked list static AudioBuffer *firstAudioBuffer = NULL; static AudioBuffer *lastAudioBuffer = NULL; // mini_al functions declaration static void OnLog(mal_context *pContext, mal_device *pDevice, const char *message); static mal_uint32 OnSendAudioDataToDevice(mal_device *pDevice, mal_uint32 frameCount, void *pFramesOut); static mal_uint32 OnAudioBufferDSPRead(mal_dsp *pDSP, mal_uint32 frameCount, void *pFramesOut, void *pUserData); static void MixAudioFrames(float *framesOut, const float *framesIn, mal_uint32 frameCount, float localVolume); // AudioBuffer management functions declaration // NOTE: Those functions are not exposed by raylib... for the moment AudioBuffer *CreateAudioBuffer(mal_format format, mal_uint32 channels, mal_uint32 sampleRate, mal_uint32 bufferSizeInFrames, AudioBufferUsage usage); void DeleteAudioBuffer(AudioBuffer *audioBuffer); bool IsAudioBufferPlaying(AudioBuffer *audioBuffer); void PlayAudioBuffer(AudioBuffer *audioBuffer); void StopAudioBuffer(AudioBuffer *audioBuffer); void PauseAudioBuffer(AudioBuffer *audioBuffer); void ResumeAudioBuffer(AudioBuffer *audioBuffer); void SetAudioBufferVolume(AudioBuffer *audioBuffer, float volume); void SetAudioBufferPitch(AudioBuffer *audioBuffer, float pitch); void TrackAudioBuffer(AudioBuffer *audioBuffer); void UntrackAudioBuffer(AudioBuffer *audioBuffer); // Log callback function static void OnLog(mal_context *pContext, mal_device *pDevice, const char *message) { (void)pContext; (void)pDevice; TraceLog(LOG_ERROR, message); // All log messages from mini_al are errors } // Sending audio data to device callback function static mal_uint32 OnSendAudioDataToDevice(mal_device *pDevice, mal_uint32 frameCount, void *pFramesOut) { // This is where all of the mixing takes place. (void)pDevice; // Mixing is basically just an accumulation. We need to initialize the output buffer to 0. memset(pFramesOut, 0, frameCount*pDevice->channels*mal_get_bytes_per_sample(pDevice->format)); // Using a mutex here for thread-safety which makes things not real-time. This is unlikely to be necessary for this project, but may // want to consider how you might want to avoid this. mal_mutex_lock(&audioLock); { for (AudioBuffer *audioBuffer = firstAudioBuffer; audioBuffer != NULL; audioBuffer = audioBuffer->next) { // Ignore stopped or paused sounds. if (!audioBuffer->playing || audioBuffer->paused) continue; mal_uint32 framesRead = 0; for (;;) { if (framesRead > frameCount) { TraceLog(LOG_DEBUG, "Mixed too many frames from audio buffer"); break; } if (framesRead == frameCount) break; // Just read as much data as we can from the stream. mal_uint32 framesToRead = (frameCount - framesRead); while (framesToRead > 0) { float tempBuffer[1024]; // 512 frames for stereo. mal_uint32 framesToReadRightNow = framesToRead; if (framesToReadRightNow > sizeof(tempBuffer)/sizeof(tempBuffer[0])/DEVICE_CHANNELS) { framesToReadRightNow = sizeof(tempBuffer)/sizeof(tempBuffer[0])/DEVICE_CHANNELS; } mal_uint32 framesJustRead = (mal_uint32)mal_dsp_read(&audioBuffer->dsp, framesToReadRightNow, tempBuffer, audioBuffer->dsp.pUserData); if (framesJustRead > 0) { float *framesOut = (float *)pFramesOut + (framesRead*device.channels); float *framesIn = tempBuffer; MixAudioFrames(framesOut, framesIn, framesJustRead, audioBuffer->volume); framesToRead -= framesJustRead; framesRead += framesJustRead; } // If we weren't able to read all the frames we requested, break. if (framesJustRead < framesToReadRightNow) { if (!audioBuffer->looping) { StopAudioBuffer(audioBuffer); break; } else { // Should never get here, but just for safety, // move the cursor position back to the start and continue the loop. audioBuffer->frameCursorPos = 0; continue; } } } // If for some reason we weren't able to read every frame we'll need to break from the loop. // Not doing this could theoretically put us into an infinite loop. if (framesToRead > 0) break; } } } mal_mutex_unlock(&audioLock); return frameCount; // We always output the same number of frames that were originally requested. } // DSP read from audio buffer callback function static mal_uint32 OnAudioBufferDSPRead(mal_dsp *pDSP, mal_uint32 frameCount, void *pFramesOut, void *pUserData) { AudioBuffer *audioBuffer = (AudioBuffer *)pUserData; mal_uint32 subBufferSizeInFrames = audioBuffer->bufferSizeInFrames/2; mal_uint32 currentSubBufferIndex = audioBuffer->frameCursorPos/subBufferSizeInFrames; if (currentSubBufferIndex > 1) { TraceLog(LOG_DEBUG, "Frame cursor position moved too far forward in audio stream"); return 0; } // Another thread can update the processed state of buffers so we just take a copy here to try and avoid potential synchronization problems. bool isSubBufferProcessed[2]; isSubBufferProcessed[0] = audioBuffer->isSubBufferProcessed[0]; isSubBufferProcessed[1] = audioBuffer->isSubBufferProcessed[1]; mal_uint32 frameSizeInBytes = mal_get_bytes_per_sample(audioBuffer->dsp.formatConverterIn.config.formatIn)*audioBuffer->dsp.formatConverterIn.config.channels; // Fill out every frame until we find a buffer that's marked as processed. Then fill the remainder with 0. mal_uint32 framesRead = 0; for (;;) { // We break from this loop differently depending on the buffer's usage. For static buffers, we simply fill as much data as we can. For // streaming buffers we only fill the halves of the buffer that are processed. Unprocessed halves must keep their audio data in-tact. if (audioBuffer->usage == AUDIO_BUFFER_USAGE_STATIC) { if (framesRead >= frameCount) break; } else { if (isSubBufferProcessed[currentSubBufferIndex]) break; } mal_uint32 totalFramesRemaining = (frameCount - framesRead); if (totalFramesRemaining == 0) break; mal_uint32 framesRemainingInOutputBuffer; if (audioBuffer->usage == AUDIO_BUFFER_USAGE_STATIC) { framesRemainingInOutputBuffer = audioBuffer->bufferSizeInFrames - audioBuffer->frameCursorPos; } else { mal_uint32 firstFrameIndexOfThisSubBuffer = subBufferSizeInFrames * currentSubBufferIndex; framesRemainingInOutputBuffer = subBufferSizeInFrames - (audioBuffer->frameCursorPos - firstFrameIndexOfThisSubBuffer); } mal_uint32 framesToRead = totalFramesRemaining; if (framesToRead > framesRemainingInOutputBuffer) framesToRead = framesRemainingInOutputBuffer; memcpy((unsigned char *)pFramesOut + (framesRead*frameSizeInBytes), audioBuffer->buffer + (audioBuffer->frameCursorPos*frameSizeInBytes), framesToRead*frameSizeInBytes); audioBuffer->frameCursorPos = (audioBuffer->frameCursorPos + framesToRead) % audioBuffer->bufferSizeInFrames; framesRead += framesToRead; // If we've read to the end of the buffer, mark it as processed. if (framesToRead == framesRemainingInOutputBuffer) { audioBuffer->isSubBufferProcessed[currentSubBufferIndex] = true; isSubBufferProcessed[currentSubBufferIndex] = true; currentSubBufferIndex = (currentSubBufferIndex + 1)%2; // We need to break from this loop if we're not looping. if (!audioBuffer->looping) { StopAudioBuffer(audioBuffer); break; } } } // Zero-fill excess. mal_uint32 totalFramesRemaining = (frameCount - framesRead); if (totalFramesRemaining > 0) { memset((unsigned char *)pFramesOut + (framesRead*frameSizeInBytes), 0, totalFramesRemaining*frameSizeInBytes); // For static buffers we can fill the remaining frames with silence for safety, but we don't want // to report those frames as "read". The reason for this is that the caller uses the return value // to know whether or not a non-looping sound has finished playback. if (audioBuffer->usage != AUDIO_BUFFER_USAGE_STATIC) framesRead += totalFramesRemaining; } return framesRead; } // This is the main mixing function. Mixing is pretty simple in this project - it's just an accumulation. // NOTE: framesOut is both an input and an output. It will be initially filled with zeros outside of this function. static void MixAudioFrames(float *framesOut, const float *framesIn, mal_uint32 frameCount, float localVolume) { for (mal_uint32 iFrame = 0; iFrame < frameCount; ++iFrame) { for (mal_uint32 iChannel = 0; iChannel < device.channels; ++iChannel) { float *frameOut = framesOut + (iFrame*device.channels); const float *frameIn = framesIn + (iFrame*device.channels); frameOut[iChannel] += frameIn[iChannel]*masterVolume*localVolume; } } } //---------------------------------------------------------------------------------- // Module Functions Definition - Audio Device initialization and Closing //---------------------------------------------------------------------------------- // Initialize audio device void InitAudioDevice(void) { // Context. mal_context_config contextConfig = mal_context_config_init(OnLog); mal_result result = mal_context_init(NULL, 0, &contextConfig, &context); if (result != MAL_SUCCESS) { TraceLog(LOG_ERROR, "Failed to initialize audio context"); return; } // Device. Using the default device. Format is floating point because it simplifies mixing. mal_device_config deviceConfig = mal_device_config_init(DEVICE_FORMAT, DEVICE_CHANNELS, DEVICE_SAMPLE_RATE, NULL, OnSendAudioDataToDevice); result = mal_device_init(&context, mal_device_type_playback, NULL, &deviceConfig, NULL, &device); if (result != MAL_SUCCESS) { TraceLog(LOG_ERROR, "Failed to initialize audio playback device"); mal_context_uninit(&context); return; } // Keep the device running the whole time. May want to consider doing something a bit smarter and only have the device running // while there's at least one sound being played. result = mal_device_start(&device); if (result != MAL_SUCCESS) { TraceLog(LOG_ERROR, "Failed to start audio playback device"); mal_device_uninit(&device); mal_context_uninit(&context); return; } // Mixing happens on a seperate thread which means we need to synchronize. I'm using a mutex here to make things simple, but may // want to look at something a bit smarter later on to keep everything real-time, if that's necessary. if (mal_mutex_init(&context, &audioLock) != MAL_SUCCESS) { TraceLog(LOG_ERROR, "Failed to create mutex for audio mixing"); mal_device_uninit(&device); mal_context_uninit(&context); return; } TraceLog(LOG_INFO, "Audio device initialized successfully: %s", device.name); TraceLog(LOG_INFO, "Audio backend: mini_al / %s", mal_get_backend_name(context.backend)); TraceLog(LOG_INFO, "Audio format: %s -> %s", mal_get_format_name(device.format), mal_get_format_name(device.internalFormat)); TraceLog(LOG_INFO, "Audio channels: %d -> %d", device.channels, device.internalChannels); TraceLog(LOG_INFO, "Audio sample rate: %d -> %d", device.sampleRate, device.internalSampleRate); TraceLog(LOG_INFO, "Audio buffer size: %d", device.bufferSizeInFrames); isAudioInitialized = MAL_TRUE; } // Close the audio device for all contexts void CloseAudioDevice(void) { if (!isAudioInitialized) { TraceLog(LOG_WARNING, "Could not close audio device because it is not currently initialized"); return; } mal_mutex_uninit(&audioLock); mal_device_uninit(&device); mal_context_uninit(&context); TraceLog(LOG_INFO, "Audio device closed successfully"); } // Check if device has been initialized successfully bool IsAudioDeviceReady(void) { return isAudioInitialized; } // Set master volume (listener) void SetMasterVolume(float volume) { if (volume < 0.0f) volume = 0.0f; else if (volume > 1.0f) volume = 1.0f; masterVolume = volume; } //---------------------------------------------------------------------------------- // Module Functions Definition - Audio Buffer management //---------------------------------------------------------------------------------- // Create a new audio buffer. Initially filled with silence AudioBuffer *CreateAudioBuffer(mal_format format, mal_uint32 channels, mal_uint32 sampleRate, mal_uint32 bufferSizeInFrames, AudioBufferUsage usage) { AudioBuffer *audioBuffer = (AudioBuffer *)calloc(sizeof(*audioBuffer) + (bufferSizeInFrames*channels*mal_get_bytes_per_sample(format)), 1); if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "CreateAudioBuffer() : Failed to allocate memory for audio buffer"); return NULL; } // We run audio data through a format converter. mal_dsp_config dspConfig; memset(&dspConfig, 0, sizeof(dspConfig)); dspConfig.formatIn = format; dspConfig.formatOut = DEVICE_FORMAT; dspConfig.channelsIn = channels; dspConfig.channelsOut = DEVICE_CHANNELS; dspConfig.sampleRateIn = sampleRate; dspConfig.sampleRateOut = DEVICE_SAMPLE_RATE; dspConfig.onRead = OnAudioBufferDSPRead; dspConfig.pUserData = audioBuffer; dspConfig.allowDynamicSampleRate = MAL_TRUE; // <-- Required for pitch shifting. mal_result resultMAL = mal_dsp_init(&dspConfig, &audioBuffer->dsp); if (resultMAL != MAL_SUCCESS) { TraceLog(LOG_ERROR, "CreateAudioBuffer() : Failed to create data conversion pipeline"); free(audioBuffer); return NULL; } audioBuffer->volume = 1; audioBuffer->pitch = 1; audioBuffer->playing = 0; audioBuffer->paused = 0; audioBuffer->looping = 0; audioBuffer->usage = usage; audioBuffer->bufferSizeInFrames = bufferSizeInFrames; audioBuffer->frameCursorPos = 0; // Buffers should be marked as processed by default so that a call to UpdateAudioStream() immediately after initialization works correctly. audioBuffer->isSubBufferProcessed[0] = true; audioBuffer->isSubBufferProcessed[1] = true; TrackAudioBuffer(audioBuffer); return audioBuffer; } // Delete an audio buffer void DeleteAudioBuffer(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "DeleteAudioBuffer() : No audio buffer"); return; } UntrackAudioBuffer(audioBuffer); free(audioBuffer); } // Check if an audio buffer is playing bool IsAudioBufferPlaying(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "IsAudioBufferPlaying() : No audio buffer"); return false; } return audioBuffer->playing && !audioBuffer->paused; } // Play an audio buffer // NOTE: Buffer is restarted to the start. // Use PauseAudioBuffer() and ResumeAudioBuffer() if the playback position should be maintained. void PlayAudioBuffer(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "PlayAudioBuffer() : No audio buffer"); return; } audioBuffer->playing = true; audioBuffer->paused = false; audioBuffer->frameCursorPos = 0; } // Stop an audio buffer void StopAudioBuffer(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "StopAudioBuffer() : No audio buffer"); return; } // Don't do anything if the audio buffer is already stopped. if (!IsAudioBufferPlaying(audioBuffer)) return; audioBuffer->playing = false; audioBuffer->paused = false; audioBuffer->frameCursorPos = 0; audioBuffer->isSubBufferProcessed[0] = true; audioBuffer->isSubBufferProcessed[1] = true; } // Pause an audio buffer void PauseAudioBuffer(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "PauseAudioBuffer() : No audio buffer"); return; } audioBuffer->paused = true; } // Resume an audio buffer void ResumeAudioBuffer(AudioBuffer *audioBuffer) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "ResumeAudioBuffer() : No audio buffer"); return; } audioBuffer->paused = false; } // Set volume for an audio buffer void SetAudioBufferVolume(AudioBuffer *audioBuffer, float volume) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "SetAudioBufferVolume() : No audio buffer"); return; } audioBuffer->volume = volume; } // Set pitch for an audio buffer void SetAudioBufferPitch(AudioBuffer *audioBuffer, float pitch) { if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "SetAudioBufferPitch() : No audio buffer"); return; } audioBuffer->pitch = pitch; // Pitching is just an adjustment of the sample rate. Note that this changes the duration of the sound - higher pitches // will make the sound faster; lower pitches make it slower. mal_uint32 newOutputSampleRate = (mal_uint32)((((float)audioBuffer->dsp.src.config.sampleRateOut / (float)audioBuffer->dsp.src.config.sampleRateIn) / pitch) * audioBuffer->dsp.src.config.sampleRateIn); mal_dsp_set_output_sample_rate(&audioBuffer->dsp, newOutputSampleRate); } // Track audio buffer to linked list next position void TrackAudioBuffer(AudioBuffer *audioBuffer) { mal_mutex_lock(&audioLock); { if (firstAudioBuffer == NULL) firstAudioBuffer = audioBuffer; else { lastAudioBuffer->next = audioBuffer; audioBuffer->prev = lastAudioBuffer; } lastAudioBuffer = audioBuffer; } mal_mutex_unlock(&audioLock); } // Untrack audio buffer from linked list void UntrackAudioBuffer(AudioBuffer *audioBuffer) { mal_mutex_lock(&audioLock); { if (audioBuffer->prev == NULL) firstAudioBuffer = audioBuffer->next; else audioBuffer->prev->next = audioBuffer->next; if (audioBuffer->next == NULL) lastAudioBuffer = audioBuffer->prev; else audioBuffer->next->prev = audioBuffer->prev; audioBuffer->prev = NULL; audioBuffer->next = NULL; } mal_mutex_unlock(&audioLock); } //---------------------------------------------------------------------------------- // Module Functions Definition - Sounds loading and playing (.WAV) //---------------------------------------------------------------------------------- // Load wave data from file Wave LoadWave(const char *fileName) { Wave wave = { 0 }; if (IsFileExtension(fileName, ".wav")) wave = LoadWAV(fileName); #if defined(SUPPORT_FILEFORMAT_OGG) else if (IsFileExtension(fileName, ".ogg")) wave = LoadOGG(fileName); #endif #if defined(SUPPORT_FILEFORMAT_FLAC) else if (IsFileExtension(fileName, ".flac")) wave = LoadFLAC(fileName); #endif #if defined(SUPPORT_FILEFORMAT_MP3) else if (IsFileExtension(fileName, ".mp3")) wave = LoadMP3(fileName); #endif else TraceLog(LOG_WARNING, "[%s] Audio fileformat not supported, it can't be loaded", fileName); return wave; } // Load wave data from raw array data Wave LoadWaveEx(void *data, int sampleCount, int sampleRate, int sampleSize, int channels) { Wave wave; wave.data = data; wave.sampleCount = sampleCount; wave.sampleRate = sampleRate; wave.sampleSize = sampleSize; wave.channels = channels; // NOTE: Copy wave data to work with, user is responsible of input data to free Wave cwave = WaveCopy(wave); WaveFormat(&cwave, sampleRate, sampleSize, channels); return cwave; } // Load sound from file // NOTE: The entire file is loaded to memory to be played (no-streaming) Sound LoadSound(const char *fileName) { Wave wave = LoadWave(fileName); Sound sound = LoadSoundFromWave(wave); UnloadWave(wave); // Sound is loaded, we can unload wave return sound; } // Load sound from wave data // NOTE: Wave data must be unallocated manually Sound LoadSoundFromWave(Wave wave) { Sound sound = { 0 }; if (wave.data != NULL) { // When using mini_al we need to do our own mixing. To simplify this we need convert the format of each sound to be consistent with // the format used to open the playback device. We can do this two ways: // // 1) Convert the whole sound in one go at load time (here). // 2) Convert the audio data in chunks at mixing time. // // I have decided on the first option because it offloads work required for the format conversion to the to the loading stage. // The downside to this is that it uses more memory if the original sound is u8 or s16. mal_format formatIn = ((wave.sampleSize == 8) ? mal_format_u8 : ((wave.sampleSize == 16) ? mal_format_s16 : mal_format_f32)); mal_uint32 frameCountIn = wave.sampleCount/wave.channels; mal_uint32 frameCount = (mal_uint32)mal_convert_frames(NULL, DEVICE_FORMAT, DEVICE_CHANNELS, DEVICE_SAMPLE_RATE, NULL, formatIn, wave.channels, wave.sampleRate, frameCountIn); if (frameCount == 0) TraceLog(LOG_WARNING, "LoadSoundFromWave() : Failed to get frame count for format conversion"); AudioBuffer* audioBuffer = CreateAudioBuffer(DEVICE_FORMAT, DEVICE_CHANNELS, DEVICE_SAMPLE_RATE, frameCount, AUDIO_BUFFER_USAGE_STATIC); if (audioBuffer == NULL) TraceLog(LOG_WARNING, "LoadSoundFromWave() : Failed to create audio buffer"); frameCount = (mal_uint32)mal_convert_frames(audioBuffer->buffer, audioBuffer->dsp.formatConverterIn.config.formatIn, audioBuffer->dsp.formatConverterIn.config.channels, audioBuffer->dsp.src.config.sampleRateIn, wave.data, formatIn, wave.channels, wave.sampleRate, frameCountIn); if (frameCount == 0) TraceLog(LOG_WARNING, "LoadSoundFromWave() : Format conversion failed"); sound.audioBuffer = audioBuffer; } return sound; } // Unload wave data void UnloadWave(Wave wave) { if (wave.data != NULL) free(wave.data); TraceLog(LOG_INFO, "Unloaded wave data from RAM"); } // Unload sound void UnloadSound(Sound sound) { DeleteAudioBuffer((AudioBuffer *)sound.audioBuffer); TraceLog(LOG_INFO, "[SND ID %i][BUFR ID %i] Unloaded sound data from RAM", sound.source, sound.buffer); } // Update sound buffer with new data // NOTE: data must match sound.format void UpdateSound(Sound sound, const void *data, int samplesCount) { AudioBuffer *audioBuffer = (AudioBuffer *)sound.audioBuffer; if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "UpdateSound() : Invalid sound - no audio buffer"); return; } StopAudioBuffer(audioBuffer); // TODO: May want to lock/unlock this since this data buffer is read at mixing time. memcpy(audioBuffer->buffer, data, samplesCount*audioBuffer->dsp.formatConverterIn.config.channels*mal_get_bytes_per_sample(audioBuffer->dsp.formatConverterIn.config.formatIn)); } // Export wave data to file void ExportWave(Wave wave, const char *fileName) { bool success = false; if (IsFileExtension(fileName, ".wav")) success = SaveWAV(wave, fileName); else if (IsFileExtension(fileName, ".raw")) { // Export raw sample data (without header) // NOTE: It's up to the user to track wave parameters FILE *rawFile = fopen(fileName, "wb"); success = fwrite(wave.data, wave.sampleCount*wave.channels*wave.sampleSize/8, 1, rawFile); fclose(rawFile); } if (success) TraceLog(LOG_INFO, "Wave exported successfully: %s", fileName); else TraceLog(LOG_WARNING, "Wave could not be exported."); } // Export wave sample data to code (.h) void ExportWaveAsCode(Wave wave, const char *fileName) { #define BYTES_TEXT_PER_LINE 20 char varFileName[256] = { 0 }; int dataSize = wave.sampleCount*wave.channels*wave.sampleSize/8; FILE *txtFile = fopen(fileName, "wt"); fprintf(txtFile, "\n//////////////////////////////////////////////////////////////////////////////////\n"); fprintf(txtFile, "// //\n"); fprintf(txtFile, "// WaveAsCode exporter v1.0 - Wave data exported as an array of bytes //\n"); fprintf(txtFile, "// //\n"); fprintf(txtFile, "// more info and bugs-report: github.com/raysan5/raylib //\n"); fprintf(txtFile, "// feedback and support: ray[at]raylib.com //\n"); fprintf(txtFile, "// //\n"); fprintf(txtFile, "// Copyright (c) 2018 Ramon Santamaria (@raysan5) //\n"); fprintf(txtFile, "// //\n"); fprintf(txtFile, "//////////////////////////////////////////////////////////////////////////////////\n\n"); // Get file name from path and convert variable name to uppercase strcpy(varFileName, GetFileNameWithoutExt(fileName)); for (int i = 0; varFileName[i] != '\0'; i++) if (varFileName[i] >= 'a' && varFileName[i] <= 'z') { varFileName[i] = varFileName[i] - 32; } fprintf(txtFile, "// Wave data information\n"); fprintf(txtFile, "#define %s_SAMPLE_COUNT %i\n", varFileName, wave.sampleCount); fprintf(txtFile, "#define %s_SAMPLE_RATE %i\n", varFileName, wave.sampleRate); fprintf(txtFile, "#define %s_SAMPLE_SIZE %i\n", varFileName, wave.sampleSize); fprintf(txtFile, "#define %s_CHANNELS %i\n\n", varFileName, wave.channels); // Write byte data as hexadecimal text fprintf(txtFile, "static unsigned char %s_DATA[%i] = { ", varFileName, dataSize); for (int i = 0; i < dataSize - 1; i++) fprintf(txtFile, ((i%BYTES_TEXT_PER_LINE == 0) ? "0x%x,\n" : "0x%x, "), ((unsigned char *)wave.data)[i]); fprintf(txtFile, "0x%x };\n", ((unsigned char *)wave.data)[dataSize - 1]); fclose(txtFile); } // Play a sound void PlaySound(Sound sound) { PlayAudioBuffer((AudioBuffer *)sound.audioBuffer); } // Pause a sound void PauseSound(Sound sound) { PauseAudioBuffer((AudioBuffer *)sound.audioBuffer); } // Resume a paused sound void ResumeSound(Sound sound) { ResumeAudioBuffer((AudioBuffer *)sound.audioBuffer); } // Stop reproducing a sound void StopSound(Sound sound) { StopAudioBuffer((AudioBuffer *)sound.audioBuffer); } // Check if a sound is playing bool IsSoundPlaying(Sound sound) { return IsAudioBufferPlaying((AudioBuffer *)sound.audioBuffer); } // Set volume for a sound void SetSoundVolume(Sound sound, float volume) { SetAudioBufferVolume((AudioBuffer *)sound.audioBuffer, volume); } // Set pitch for a sound void SetSoundPitch(Sound sound, float pitch) { SetAudioBufferPitch((AudioBuffer *)sound.audioBuffer, pitch); } // Convert wave data to desired format void WaveFormat(Wave *wave, int sampleRate, int sampleSize, int channels) { mal_format formatIn = ((wave->sampleSize == 8) ? mal_format_u8 : ((wave->sampleSize == 16) ? mal_format_s16 : mal_format_f32)); mal_format formatOut = (( sampleSize == 8) ? mal_format_u8 : (( sampleSize == 16) ? mal_format_s16 : mal_format_f32)); mal_uint32 frameCountIn = wave->sampleCount; // Is wave->sampleCount actually the frame count? That terminology needs to change, if so. mal_uint32 frameCount = (mal_uint32)mal_convert_frames(NULL, formatOut, channels, sampleRate, NULL, formatIn, wave->channels, wave->sampleRate, frameCountIn); if (frameCount == 0) { TraceLog(LOG_ERROR, "WaveFormat() : Failed to get frame count for format conversion."); return; } void *data = malloc(frameCount*channels*(sampleSize/8)); frameCount = (mal_uint32)mal_convert_frames(data, formatOut, channels, sampleRate, wave->data, formatIn, wave->channels, wave->sampleRate, frameCountIn); if (frameCount == 0) { TraceLog(LOG_ERROR, "WaveFormat() : Format conversion failed."); return; } wave->sampleCount = frameCount; wave->sampleSize = sampleSize; wave->sampleRate = sampleRate; wave->channels = channels; free(wave->data); wave->data = data; } // Copy a wave to a new wave Wave WaveCopy(Wave wave) { Wave newWave = { 0 }; newWave.data = malloc(wave.sampleCount*wave.sampleSize/8*wave.channels); if (newWave.data != NULL) { // NOTE: Size must be provided in bytes memcpy(newWave.data, wave.data, wave.sampleCount*wave.channels*wave.sampleSize/8); newWave.sampleCount = wave.sampleCount; newWave.sampleRate = wave.sampleRate; newWave.sampleSize = wave.sampleSize; newWave.channels = wave.channels; } return newWave; } // Crop a wave to defined samples range // NOTE: Security check in case of out-of-range void WaveCrop(Wave *wave, int initSample, int finalSample) { if ((initSample >= 0) && (initSample < finalSample) && (finalSample > 0) && ((unsigned int)finalSample < wave->sampleCount)) { int sampleCount = finalSample - initSample; void *data = malloc(sampleCount*wave->sampleSize/8*wave->channels); memcpy(data, (unsigned char *)wave->data + (initSample*wave->channels*wave->sampleSize/8), sampleCount*wave->channels*wave->sampleSize/8); free(wave->data); wave->data = data; } else TraceLog(LOG_WARNING, "Wave crop range out of bounds"); } // Get samples data from wave as a floats array // NOTE: Returned sample values are normalized to range [-1..1] float *GetWaveData(Wave wave) { float *samples = (float *)malloc(wave.sampleCount*wave.channels*sizeof(float)); for (unsigned int i = 0; i < wave.sampleCount; i++) { for (unsigned int j = 0; j < wave.channels; j++) { if (wave.sampleSize == 8) samples[wave.channels*i + j] = (float)(((unsigned char *)wave.data)[wave.channels*i + j] - 127)/256.0f; else if (wave.sampleSize == 16) samples[wave.channels*i + j] = (float)((short *)wave.data)[wave.channels*i + j]/32767.0f; else if (wave.sampleSize == 32) samples[wave.channels*i + j] = ((float *)wave.data)[wave.channels*i + j]; } } return samples; } //---------------------------------------------------------------------------------- // Module Functions Definition - Music loading and stream playing (.OGG) //---------------------------------------------------------------------------------- // Load music stream from file Music LoadMusicStream(const char *fileName) { Music music = (MusicData *)malloc(sizeof(MusicData)); bool musicLoaded = true; if (IsFileExtension(fileName, ".ogg")) { // Open ogg audio stream music->ctxOgg = stb_vorbis_open_filename(fileName, NULL, NULL); if (music->ctxOgg == NULL) musicLoaded = false; else { stb_vorbis_info info = stb_vorbis_get_info(music->ctxOgg); // Get Ogg file info // OGG bit rate defaults to 16 bit, it's enough for compressed format music->stream = InitAudioStream(info.sample_rate, 16, info.channels); music->totalSamples = (unsigned int)stb_vorbis_stream_length_in_samples(music->ctxOgg)*info.channels; music->samplesLeft = music->totalSamples; music->ctxType = MUSIC_AUDIO_OGG; music->loopCount = -1; // Infinite loop by default TraceLog(LOG_DEBUG, "[%s] OGG total samples: %i", fileName, music->totalSamples); TraceLog(LOG_DEBUG, "[%s] OGG sample rate: %i", fileName, info.sample_rate); TraceLog(LOG_DEBUG, "[%s] OGG channels: %i", fileName, info.channels); TraceLog(LOG_DEBUG, "[%s] OGG memory required: %i", fileName, info.temp_memory_required); } } #if defined(SUPPORT_FILEFORMAT_FLAC) else if (IsFileExtension(fileName, ".flac")) { music->ctxFlac = drflac_open_file(fileName); if (music->ctxFlac == NULL) musicLoaded = false; else { music->stream = InitAudioStream(music->ctxFlac->sampleRate, music->ctxFlac->bitsPerSample, music->ctxFlac->channels); music->totalSamples = (unsigned int)music->ctxFlac->totalSampleCount; music->samplesLeft = music->totalSamples; music->ctxType = MUSIC_AUDIO_FLAC; music->loopCount = -1; // Infinite loop by default TraceLog(LOG_DEBUG, "[%s] FLAC total samples: %i", fileName, music->totalSamples); TraceLog(LOG_DEBUG, "[%s] FLAC sample rate: %i", fileName, music->ctxFlac->sampleRate); TraceLog(LOG_DEBUG, "[%s] FLAC bits per sample: %i", fileName, music->ctxFlac->bitsPerSample); TraceLog(LOG_DEBUG, "[%s] FLAC channels: %i", fileName, music->ctxFlac->channels); } } #endif #if defined(SUPPORT_FILEFORMAT_MP3) else if (IsFileExtension(fileName, ".mp3")) { int result = drmp3_init_file(&music->ctxMp3, fileName, NULL); if (!result) musicLoaded = false; else { TraceLog(LOG_INFO, "[%s] MP3 sample rate: %i", fileName, music->ctxMp3.sampleRate); TraceLog(LOG_INFO, "[%s] MP3 bits per sample: %i", fileName, 32); TraceLog(LOG_INFO, "[%s] MP3 channels: %i", fileName, music->ctxMp3.channels); music->stream = InitAudioStream(music->ctxMp3.sampleRate, 32, music->ctxMp3.channels); // TODO: There is not an easy way to compute the total number of samples available // in an MP3, frames size could be variable... we tried with a 60 seconds music... but crashes... music->totalSamples = drmp3_get_pcm_frame_count(&music->ctxMp3)*music->ctxMp3.channels; music->samplesLeft = music->totalSamples; music->ctxType = MUSIC_AUDIO_MP3; music->loopCount = -1; // Infinite loop by default TraceLog(LOG_INFO, "[%s] MP3 total samples: %i", fileName, music->totalSamples); } } #endif #if defined(SUPPORT_FILEFORMAT_XM) else if (IsFileExtension(fileName, ".xm")) { int result = jar_xm_create_context_from_file(&music->ctxXm, 48000, fileName); if (!result) // XM context created successfully { jar_xm_set_max_loop_count(music->ctxXm, 0); // Set infinite number of loops // NOTE: Only stereo is supported for XM music->stream = InitAudioStream(48000, 16, 2); music->totalSamples = (unsigned int)jar_xm_get_remaining_samples(music->ctxXm); music->samplesLeft = music->totalSamples; music->ctxType = MUSIC_MODULE_XM; music->loopCount = -1; // Infinite loop by default TraceLog(LOG_INFO, "[%s] XM number of samples: %i", fileName, music->totalSamples); TraceLog(LOG_INFO, "[%s] XM track length: %11.6f sec", fileName, (float)music->totalSamples/48000.0f); } else musicLoaded = false; } #endif #if defined(SUPPORT_FILEFORMAT_MOD) else if (IsFileExtension(fileName, ".mod")) { jar_mod_init(&music->ctxMod); if (jar_mod_load_file(&music->ctxMod, fileName)) { music->stream = InitAudioStream(48000, 16, 2); music->totalSamples = (unsigned int)jar_mod_max_samples(&music->ctxMod); music->samplesLeft = music->totalSamples; music->ctxType = MUSIC_MODULE_MOD; music->loopCount = -1; // Infinite loop by default TraceLog(LOG_DEBUG, "[%s] MOD number of samples: %i", fileName, music->samplesLeft); TraceLog(LOG_DEBUG, "[%s] MOD track length: %11.6f sec", fileName, (float)music->totalSamples/48000.0f); } else musicLoaded = false; } #endif else musicLoaded = false; if (!musicLoaded) { if (music->ctxType == MUSIC_AUDIO_OGG) stb_vorbis_close(music->ctxOgg); #if defined(SUPPORT_FILEFORMAT_FLAC) else if (music->ctxType == MUSIC_AUDIO_FLAC) drflac_free(music->ctxFlac); #endif #if defined(SUPPORT_FILEFORMAT_MP3) else if (music->ctxType == MUSIC_AUDIO_MP3) drmp3_uninit(&music->ctxMp3); #endif #if defined(SUPPORT_FILEFORMAT_XM) else if (music->ctxType == MUSIC_MODULE_XM) jar_xm_free_context(music->ctxXm); #endif #if defined(SUPPORT_FILEFORMAT_MOD) else if (music->ctxType == MUSIC_MODULE_MOD) jar_mod_unload(&music->ctxMod); #endif free(music); music = NULL; TraceLog(LOG_WARNING, "[%s] Music file could not be opened", fileName); } return music; } // Unload music stream void UnloadMusicStream(Music music) { CloseAudioStream(music->stream); if (music->ctxType == MUSIC_AUDIO_OGG) stb_vorbis_close(music->ctxOgg); #if defined(SUPPORT_FILEFORMAT_FLAC) else if (music->ctxType == MUSIC_AUDIO_FLAC) drflac_free(music->ctxFlac); #endif #if defined(SUPPORT_FILEFORMAT_MP3) else if (music->ctxType == MUSIC_AUDIO_MP3) drmp3_uninit(&music->ctxMp3); #endif #if defined(SUPPORT_FILEFORMAT_XM) else if (music->ctxType == MUSIC_MODULE_XM) jar_xm_free_context(music->ctxXm); #endif #if defined(SUPPORT_FILEFORMAT_MOD) else if (music->ctxType == MUSIC_MODULE_MOD) jar_mod_unload(&music->ctxMod); #endif free(music); } // Start music playing (open stream) void PlayMusicStream(Music music) { AudioBuffer *audioBuffer = (AudioBuffer *)music->stream.audioBuffer; if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "PlayMusicStream() : No audio buffer"); return; } // For music streams, we need to make sure we maintain the frame cursor position. This is hack for this section of code in UpdateMusicStream() // // NOTE: In case window is minimized, music stream is stopped, // // just make sure to play again on window restore // if (IsMusicPlaying(music)) PlayMusicStream(music); mal_uint32 frameCursorPos = audioBuffer->frameCursorPos; PlayAudioStream(music->stream); // <-- This resets the cursor position. audioBuffer->frameCursorPos = frameCursorPos; } // Pause music playing void PauseMusicStream(Music music) { PauseAudioStream(music->stream); } // Resume music playing void ResumeMusicStream(Music music) { ResumeAudioStream(music->stream); } // Stop music playing (close stream) // TODO: To clear a buffer, make sure they have been already processed! void StopMusicStream(Music music) { StopAudioStream(music->stream); // Restart music context switch (music->ctxType) { case MUSIC_AUDIO_OGG: stb_vorbis_seek_start(music->ctxOgg); break; #if defined(SUPPORT_FILEFORMAT_FLAC) case MUSIC_AUDIO_FLAC: /* TODO: Restart FLAC context */ break; #endif #if defined(SUPPORT_FILEFORMAT_MP3) case MUSIC_AUDIO_MP3: drmp3_seek_to_pcm_frame(&music->ctxMp3, 0); break; #endif #if defined(SUPPORT_FILEFORMAT_XM) case MUSIC_MODULE_XM: /* TODO: Restart XM context */ break; #endif #if defined(SUPPORT_FILEFORMAT_MOD) case MUSIC_MODULE_MOD: jar_mod_seek_start(&music->ctxMod); break; #endif default: break; } music->samplesLeft = music->totalSamples; } // Update (re-fill) music buffers if data already processed // TODO: Make sure buffers are ready for update... check music state void UpdateMusicStream(Music music) { bool streamEnding = false; unsigned int subBufferSizeInFrames = ((AudioBuffer *)music->stream.audioBuffer)->bufferSizeInFrames/2; // NOTE: Using dynamic allocation because it could require more than 16KB void *pcm = calloc(subBufferSizeInFrames*music->stream.channels*music->stream.sampleSize/8, 1); int samplesCount = 0; // Total size of data steamed in L+R samples for xm floats, individual L or R for ogg shorts while (IsAudioBufferProcessed(music->stream)) { if ((music->samplesLeft/music->stream.channels) >= subBufferSizeInFrames) samplesCount = subBufferSizeInFrames*music->stream.channels; else samplesCount = music->samplesLeft; // TODO: Really don't like ctxType thingy... switch (music->ctxType) { case MUSIC_AUDIO_OGG: { // NOTE: Returns the number of samples to process (be careful! we ask for number of shorts!) stb_vorbis_get_samples_short_interleaved(music->ctxOgg, music->stream.channels, (short *)pcm, samplesCount); } break; #if defined(SUPPORT_FILEFORMAT_FLAC) case MUSIC_AUDIO_FLAC: { // NOTE: Returns the number of samples to process unsigned int numSamplesFlac = (unsigned int)drflac_read_s16(music->ctxFlac, samplesCount, (short *)pcm); } break; #endif #if defined(SUPPORT_FILEFORMAT_MP3) case MUSIC_AUDIO_MP3: { // NOTE: samplesCount, actually refers to framesCount and returns the number of frames processed drmp3_read_pcm_frames_f32(&music->ctxMp3, samplesCount/music->stream.channels, (float *)pcm); } break; #endif #if defined(SUPPORT_FILEFORMAT_XM) case MUSIC_MODULE_XM: { // NOTE: Internally this function considers 2 channels generation, so samplesCount/2 --> WEIRD jar_xm_generate_samples_16bit(music->ctxXm, (short *)pcm, samplesCount/2); } break; #endif #if defined(SUPPORT_FILEFORMAT_MOD) case MUSIC_MODULE_MOD: jar_mod_fillbuffer(&music->ctxMod, pcm, samplesCount, 0); break; #endif default: break; } UpdateAudioStream(music->stream, pcm, samplesCount); music->samplesLeft -= samplesCount; if (music->samplesLeft <= 0) { streamEnding = true; break; } } // Free allocated pcm data free(pcm); // Reset audio stream for looping if (streamEnding) { StopMusicStream(music); // Stop music (and reset) // Decrease loopCount to stop when required if (music->loopCount > 0) { music->loopCount--; // Decrease loop count PlayMusicStream(music); // Play again } else { if (music->loopCount == -1) PlayMusicStream(music); } } else { // NOTE: In case window is minimized, music stream is stopped, // just make sure to play again on window restore if (IsMusicPlaying(music)) PlayMusicStream(music); } } // Check if any music is playing bool IsMusicPlaying(Music music) { return IsAudioStreamPlaying(music->stream); } // Set volume for music void SetMusicVolume(Music music, float volume) { SetAudioStreamVolume(music->stream, volume); } // Set pitch for music void SetMusicPitch(Music music, float pitch) { SetAudioStreamPitch(music->stream, pitch); } // Set music loop count (loop repeats) // NOTE: If set to -1, means infinite loop void SetMusicLoopCount(Music music, int count) { music->loopCount = count; } // Get music time length (in seconds) float GetMusicTimeLength(Music music) { float totalSeconds = (float)music->totalSamples/(music->stream.sampleRate*music->stream.channels); return totalSeconds; } // Get current music time played (in seconds) float GetMusicTimePlayed(Music music) { float secondsPlayed = 0.0f; unsigned int samplesPlayed = music->totalSamples - music->samplesLeft; secondsPlayed = (float)samplesPlayed/(music->stream.sampleRate*music->stream.channels); return secondsPlayed; } // Init audio stream (to stream audio pcm data) AudioStream InitAudioStream(unsigned int sampleRate, unsigned int sampleSize, unsigned int channels) { AudioStream stream = { 0 }; stream.sampleRate = sampleRate; stream.sampleSize = sampleSize; // Only mono and stereo channels are supported, more channels require AL_EXT_MCFORMATS extension if ((channels > 0) && (channels < 3)) stream.channels = channels; else { TraceLog(LOG_WARNING, "Init audio stream: Number of channels not supported: %i", channels); stream.channels = 1; // Fallback to mono channel } mal_format formatIn = ((stream.sampleSize == 8) ? mal_format_u8 : ((stream.sampleSize == 16) ? mal_format_s16 : mal_format_f32)); // The size of a streaming buffer must be at least double the size of a period. unsigned int periodSize = device.bufferSizeInFrames/device.periods; unsigned int subBufferSize = AUDIO_BUFFER_SIZE; if (subBufferSize < periodSize) subBufferSize = periodSize; AudioBuffer *audioBuffer = CreateAudioBuffer(formatIn, stream.channels, stream.sampleRate, subBufferSize*2, AUDIO_BUFFER_USAGE_STREAM); if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "InitAudioStream() : Failed to create audio buffer"); return stream; } audioBuffer->looping = true; // Always loop for streaming buffers. stream.audioBuffer = audioBuffer; TraceLog(LOG_INFO, "[AUD ID %i] Audio stream loaded successfully (%i Hz, %i bit, %s)", stream.source, stream.sampleRate, stream.sampleSize, (stream.channels == 1) ? "Mono" : "Stereo"); return stream; } // Close audio stream and free memory void CloseAudioStream(AudioStream stream) { DeleteAudioBuffer((AudioBuffer *)stream.audioBuffer); TraceLog(LOG_INFO, "[AUD ID %i] Unloaded audio stream data", stream.source); } // Update audio stream buffers with data // NOTE 1: Only updates one buffer of the stream source: unqueue -> update -> queue // NOTE 2: To unqueue a buffer it needs to be processed: IsAudioBufferProcessed() void UpdateAudioStream(AudioStream stream, const void *data, int samplesCount) { AudioBuffer *audioBuffer = (AudioBuffer *)stream.audioBuffer; if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "UpdateAudioStream() : No audio buffer"); return; } if (audioBuffer->isSubBufferProcessed[0] || audioBuffer->isSubBufferProcessed[1]) { mal_uint32 subBufferToUpdate; if (audioBuffer->isSubBufferProcessed[0] && audioBuffer->isSubBufferProcessed[1]) { // Both buffers are available for updating. Update the first one and make sure the cursor is moved back to the front. subBufferToUpdate = 0; audioBuffer->frameCursorPos = 0; } else { // Just update whichever sub-buffer is processed. subBufferToUpdate = (audioBuffer->isSubBufferProcessed[0]) ? 0 : 1; } mal_uint32 subBufferSizeInFrames = audioBuffer->bufferSizeInFrames/2; unsigned char *subBuffer = audioBuffer->buffer + ((subBufferSizeInFrames*stream.channels*(stream.sampleSize/8))*subBufferToUpdate); // Does this API expect a whole buffer to be updated in one go? Assuming so, but if not will need to change this logic. if (subBufferSizeInFrames >= (mal_uint32)samplesCount/stream.channels) { mal_uint32 framesToWrite = subBufferSizeInFrames; if (framesToWrite > ((mal_uint32)samplesCount/stream.channels)) framesToWrite = (mal_uint32)samplesCount/stream.channels; mal_uint32 bytesToWrite = framesToWrite*stream.channels*(stream.sampleSize/8); memcpy(subBuffer, data, bytesToWrite); // Any leftover frames should be filled with zeros. mal_uint32 leftoverFrameCount = subBufferSizeInFrames - framesToWrite; if (leftoverFrameCount > 0) { memset(subBuffer + bytesToWrite, 0, leftoverFrameCount*stream.channels*(stream.sampleSize/8)); } audioBuffer->isSubBufferProcessed[subBufferToUpdate] = false; } else { TraceLog(LOG_ERROR, "UpdateAudioStream() : Attempting to write too many frames to buffer"); return; } } else { TraceLog(LOG_ERROR, "Audio buffer not available for updating"); return; } } // Check if any audio stream buffers requires refill bool IsAudioBufferProcessed(AudioStream stream) { AudioBuffer *audioBuffer = (AudioBuffer *)stream.audioBuffer; if (audioBuffer == NULL) { TraceLog(LOG_ERROR, "IsAudioBufferProcessed() : No audio buffer"); return false; } return audioBuffer->isSubBufferProcessed[0] || audioBuffer->isSubBufferProcessed[1]; } // Play audio stream void PlayAudioStream(AudioStream stream) { PlayAudioBuffer((AudioBuffer *)stream.audioBuffer); } // Play audio stream void PauseAudioStream(AudioStream stream) { PauseAudioBuffer((AudioBuffer *)stream.audioBuffer); } // Resume audio stream playing void ResumeAudioStream(AudioStream stream) { ResumeAudioBuffer((AudioBuffer *)stream.audioBuffer); } // Check if audio stream is playing. bool IsAudioStreamPlaying(AudioStream stream) { return IsAudioBufferPlaying((AudioBuffer *)stream.audioBuffer); } // Stop audio stream void StopAudioStream(AudioStream stream) { StopAudioBuffer((AudioBuffer *)stream.audioBuffer); } void SetAudioStreamVolume(AudioStream stream, float volume) { SetAudioBufferVolume((AudioBuffer *)stream.audioBuffer, volume); } void SetAudioStreamPitch(AudioStream stream, float pitch) { SetAudioBufferPitch((AudioBuffer *)stream.audioBuffer, pitch); } //---------------------------------------------------------------------------------- // Module specific Functions Definition //---------------------------------------------------------------------------------- #if defined(SUPPORT_FILEFORMAT_WAV) // Load WAV file into Wave structure static Wave LoadWAV(const char *fileName) { // Basic WAV headers structs typedef struct { char chunkID[4]; int chunkSize; char format[4]; } WAVRiffHeader; typedef struct { char subChunkID[4]; int subChunkSize; short audioFormat; short numChannels; int sampleRate; int byteRate; short blockAlign; short bitsPerSample; } WAVFormat; typedef struct { char subChunkID[4]; int subChunkSize; } WAVData; WAVRiffHeader wavRiffHeader; WAVFormat wavFormat; WAVData wavData; Wave wave = { 0 }; FILE *wavFile; wavFile = fopen(fileName, "rb"); if (wavFile == NULL) { TraceLog(LOG_WARNING, "[%s] WAV file could not be opened", fileName); wave.data = NULL; } else { // Read in the first chunk into the struct fread(&wavRiffHeader, sizeof(WAVRiffHeader), 1, wavFile); // Check for RIFF and WAVE tags if (strncmp(wavRiffHeader.chunkID, "RIFF", 4) || strncmp(wavRiffHeader.format, "WAVE", 4)) { TraceLog(LOG_WARNING, "[%s] Invalid RIFF or WAVE Header", fileName); } else { // Read in the 2nd chunk for the wave info fread(&wavFormat, sizeof(WAVFormat), 1, wavFile); // Check for fmt tag if ((wavFormat.subChunkID[0] != 'f') || (wavFormat.subChunkID[1] != 'm') || (wavFormat.subChunkID[2] != 't') || (wavFormat.subChunkID[3] != ' ')) { TraceLog(LOG_WARNING, "[%s] Invalid Wave format", fileName); } else { // Check for extra parameters; if (wavFormat.subChunkSize > 16) fseek(wavFile, sizeof(short), SEEK_CUR); // Read in the the last byte of data before the sound file fread(&wavData, sizeof(WAVData), 1, wavFile); // Check for data tag if ((wavData.subChunkID[0] != 'd') || (wavData.subChunkID[1] != 'a') || (wavData.subChunkID[2] != 't') || (wavData.subChunkID[3] != 'a')) { TraceLog(LOG_WARNING, "[%s] Invalid data header", fileName); } else { // Allocate memory for data wave.data = malloc(wavData.subChunkSize); // Read in the sound data into the soundData variable fread(wave.data, wavData.subChunkSize, 1, wavFile); // Store wave parameters wave.sampleRate = wavFormat.sampleRate; wave.sampleSize = wavFormat.bitsPerSample; wave.channels = wavFormat.numChannels; // NOTE: Only support 8 bit, 16 bit and 32 bit sample sizes if ((wave.sampleSize != 8) && (wave.sampleSize != 16) && (wave.sampleSize != 32)) { TraceLog(LOG_WARNING, "[%s] WAV sample size (%ibit) not supported, converted to 16bit", fileName, wave.sampleSize); WaveFormat(&wave, wave.sampleRate, 16, wave.channels); } // NOTE: Only support up to 2 channels (mono, stereo) if (wave.channels > 2) { WaveFormat(&wave, wave.sampleRate, wave.sampleSize, 2); TraceLog(LOG_WARNING, "[%s] WAV channels number (%i) not supported, converted to 2 channels", fileName, wave.channels); } // NOTE: subChunkSize comes in bytes, we need to translate it to number of samples wave.sampleCount = (wavData.subChunkSize/(wave.sampleSize/8))/wave.channels; TraceLog(LOG_INFO, "[%s] WAV file loaded successfully (%i Hz, %i bit, %s)", fileName, wave.sampleRate, wave.sampleSize, (wave.channels == 1) ? "Mono" : "Stereo"); } } } fclose(wavFile); } return wave; } // Save wave data as WAV file static int SaveWAV(Wave wave, const char *fileName) { int success = 0; int dataSize = wave.sampleCount*wave.channels*wave.sampleSize/8; // Basic WAV headers structs typedef struct { char chunkID[4]; int chunkSize; char format[4]; } RiffHeader; typedef struct { char subChunkID[4]; int subChunkSize; short audioFormat; short numChannels; int sampleRate; int byteRate; short blockAlign; short bitsPerSample; } WaveFormat; typedef struct { char subChunkID[4]; int subChunkSize; } WaveData; FILE *wavFile = fopen(fileName, "wb"); if (wavFile == NULL) TraceLog(LOG_WARNING, "[%s] WAV audio file could not be created", fileName); else { RiffHeader riffHeader; WaveFormat waveFormat; WaveData waveData; // Fill structs with data riffHeader.chunkID[0] = 'R'; riffHeader.chunkID[1] = 'I'; riffHeader.chunkID[2] = 'F'; riffHeader.chunkID[3] = 'F'; riffHeader.chunkSize = 44 - 4 + wave.sampleCount*wave.sampleSize/8; riffHeader.format[0] = 'W'; riffHeader.format[1] = 'A'; riffHeader.format[2] = 'V'; riffHeader.format[3] = 'E'; waveFormat.subChunkID[0] = 'f'; waveFormat.subChunkID[1] = 'm'; waveFormat.subChunkID[2] = 't'; waveFormat.subChunkID[3] = ' '; waveFormat.subChunkSize = 16; waveFormat.audioFormat = 1; waveFormat.numChannels = wave.channels; waveFormat.sampleRate = wave.sampleRate; waveFormat.byteRate = wave.sampleRate*wave.sampleSize/8; waveFormat.blockAlign = wave.sampleSize/8; waveFormat.bitsPerSample = wave.sampleSize; waveData.subChunkID[0] = 'd'; waveData.subChunkID[1] = 'a'; waveData.subChunkID[2] = 't'; waveData.subChunkID[3] = 'a'; waveData.subChunkSize = dataSize; success = fwrite(&riffHeader, sizeof(RiffHeader), 1, wavFile); success = fwrite(&waveFormat, sizeof(WaveFormat), 1, wavFile); success = fwrite(&waveData, sizeof(WaveData), 1, wavFile); success = fwrite(wave.data, dataSize, 1, wavFile); fclose(wavFile); } // If all data has been written correctly to file, success = 1 return success; } #endif #if defined(SUPPORT_FILEFORMAT_OGG) // Load OGG file into Wave structure // NOTE: Using stb_vorbis library static Wave LoadOGG(const char *fileName) { Wave wave = { 0 }; stb_vorbis *oggFile = stb_vorbis_open_filename(fileName, NULL, NULL); if (oggFile == NULL) TraceLog(LOG_WARNING, "[%s] OGG file could not be opened", fileName); else { stb_vorbis_info info = stb_vorbis_get_info(oggFile); wave.sampleRate = info.sample_rate; wave.sampleSize = 16; // 16 bit per sample (short) wave.channels = info.channels; wave.sampleCount = (unsigned int)stb_vorbis_stream_length_in_samples(oggFile)*info.channels; // Independent by channel float totalSeconds = stb_vorbis_stream_length_in_seconds(oggFile); if (totalSeconds > 10) TraceLog(LOG_WARNING, "[%s] Ogg audio length is larger than 10 seconds (%f), that's a big file in memory, consider music streaming", fileName, totalSeconds); wave.data = (short *)malloc(wave.sampleCount*wave.channels*sizeof(short)); // NOTE: Returns the number of samples to process (be careful! we ask for number of shorts!) int numSamplesOgg = stb_vorbis_get_samples_short_interleaved(oggFile, info.channels, (short *)wave.data, wave.sampleCount*wave.channels); TraceLog(LOG_DEBUG, "[%s] Samples obtained: %i", fileName, numSamplesOgg); TraceLog(LOG_INFO, "[%s] OGG file loaded successfully (%i Hz, %i bit, %s)", fileName, wave.sampleRate, wave.sampleSize, (wave.channels == 1) ? "Mono" : "Stereo"); stb_vorbis_close(oggFile); } return wave; } #endif #if defined(SUPPORT_FILEFORMAT_FLAC) // Load FLAC file into Wave structure // NOTE: Using dr_flac library static Wave LoadFLAC(const char *fileName) { Wave wave; // Decode an entire FLAC file in one go uint64_t totalSampleCount; wave.data = drflac_open_and_decode_file_s16(fileName, &wave.channels, &wave.sampleRate, &totalSampleCount); wave.sampleCount = (unsigned int)totalSampleCount; wave.sampleSize = 16; // NOTE: Only support up to 2 channels (mono, stereo) if (wave.channels > 2) TraceLog(LOG_WARNING, "[%s] FLAC channels number (%i) not supported", fileName, wave.channels); if (wave.data == NULL) TraceLog(LOG_WARNING, "[%s] FLAC data could not be loaded", fileName); else TraceLog(LOG_INFO, "[%s] FLAC file loaded successfully (%i Hz, %i bit, %s)", fileName, wave.sampleRate, wave.sampleSize, (wave.channels == 1) ? "Mono" : "Stereo"); return wave; } #endif #if defined(SUPPORT_FILEFORMAT_MP3) // Load MP3 file into Wave structure // NOTE: Using dr_mp3 library static Wave LoadMP3(const char *fileName) { Wave wave = { 0 }; // Decode an entire MP3 file in one go uint64_t totalFrameCount = 0; drmp3_config config = { 0 }; wave.data = drmp3_open_file_and_read_f32(fileName, &config, &totalFrameCount); wave.channels = config.outputChannels; wave.sampleRate = config.outputSampleRate; wave.sampleCount = (int)totalFrameCount*wave.channels; wave.sampleSize = 32; // NOTE: Only support up to 2 channels (mono, stereo) if (wave.channels > 2) TraceLog(LOG_WARNING, "[%s] MP3 channels number (%i) not supported", fileName, wave.channels); if (wave.data == NULL) TraceLog(LOG_WARNING, "[%s] MP3 data could not be loaded", fileName); else TraceLog(LOG_INFO, "[%s] MP3 file loaded successfully (%i Hz, %i bit, %s)", fileName, wave.sampleRate, wave.sampleSize, (wave.channels == 1) ? "Mono" : "Stereo"); return wave; } #endif // Some required functions for audio standalone module version #if defined(AUDIO_STANDALONE) // Check file extension bool IsFileExtension(const char *fileName, const char *ext) { bool result = false; const char *fileExt; if ((fileExt = strrchr(fileName, '.')) != NULL) { if (strcmp(fileExt, ext) == 0) result = true; } return result; } // Show trace log messages (LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_DEBUG) void TraceLog(int msgType, const char *text, ...) { va_list args; va_start(args, text); switch (msgType) { case LOG_INFO: fprintf(stdout, "INFO: "); break; case LOG_ERROR: fprintf(stdout, "ERROR: "); break; case LOG_WARNING: fprintf(stdout, "WARNING: "); break; case LOG_DEBUG: fprintf(stdout, "DEBUG: "); break; default: break; } vfprintf(stdout, text, args); fprintf(stdout, "\n"); va_end(args); if (msgType == LOG_ERROR) exit(1); } #endif