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Merge pull request #110 from kd7tck/develop

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quick fix (module audio support)
This commit is contained in:
Ray 2016-04-27 09:09:31 +02:00
commit eb36c351cf
3 changed files with 80 additions and 51 deletions
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94
src/audio.c
View File

@ -42,9 +42,6 @@
#include <string.h> // Required for strcmp()
#include <stdio.h> // Used for .WAV loading
#define JAR_XM_IMPLEMENTATION
#include "jar_xm.h" // For playing .xm files
#if defined(AUDIO_STANDALONE)
#include <stdarg.h> // Used for functions with variable number of parameters (TraceLog())
#else
@ -53,7 +50,10 @@
#endif
//#define STB_VORBIS_HEADER_ONLY
#include "stb_vorbis.h" // OGG loading functions
#include "stb_vorbis.h" // OGG loading functions
#define JAR_XM_IMPLEMENTATION
#include "jar_xm.h" // For playing .xm files
//----------------------------------------------------------------------------------
// Defines and Macros
@ -85,6 +85,7 @@ typedef struct Music {
int channels;
int sampleRate;
int totalSamplesLeft;
float totalLengthSeconds;
bool loop;
bool chipTune; // True if chiptune is loaded
} Music;
@ -566,23 +567,47 @@ void PlayMusicStream(char *fileName)
// NOTE: Regularly, we must check if a buffer has been processed and refill it: UpdateMusicStream()
currentMusic.totalSamplesLeft = stb_vorbis_stream_length_in_samples(currentMusic.stream) * currentMusic.channels;
currentMusic.totalLengthSeconds = stb_vorbis_stream_length_in_seconds(currentMusic.stream);
}
}
else if (strcmp(GetExtension(fileName),"xm") == 0)
{
// Stop current music, clean buffers, unload current stream
StopMusicStream();
// new song settings for xm chiptune
currentMusic.chipTune = true;
currentMusic.channels = 2;
currentMusic.sampleRate = 48000;
currentMusic.loop = true;
// only stereo/float is supported for xm
if(info.channels == 2 && !jar_xm_create_context_from_file(&currentMusic.chipctx, currentMusic.sampleRate, fileName))
// only stereo is supported for xm
if(!jar_xm_create_context_from_file(&currentMusic.chipctx, currentMusic.sampleRate, fileName))
{
currentMusic.format = AL_FORMAT_STEREO_FLOAT32;
jar_xm_set_max_loop_count(currentMusic.chipctx, 0); //infinite number of loops
//currentMusic.totalSamplesLeft = ; // Unsure of how to calculate this
currentMusic.format = AL_FORMAT_STEREO16;
jar_xm_set_max_loop_count(currentMusic.chipctx, 0); // infinite number of loops
currentMusic.totalSamplesLeft = jar_xm_get_remaining_samples(currentMusic.chipctx);
currentMusic.totalLengthSeconds = ((float)currentMusic.totalSamplesLeft) / ((float)currentMusic.sampleRate);
musicEnabled = true;
TraceLog(INFO, "[%s] XM number of samples: %i", fileName, currentMusic.totalSamplesLeft);
TraceLog(INFO, "[%s] XM track length: %11.6f sec", fileName, currentMusic.totalLengthSeconds);
// Set up OpenAL
alGenSources(1, &currentMusic.source);
alSourcef(currentMusic.source, AL_PITCH, 1);
alSourcef(currentMusic.source, AL_GAIN, 1);
alSource3f(currentMusic.source, AL_POSITION, 0, 0, 0);
alSource3f(currentMusic.source, AL_VELOCITY, 0, 0, 0);
alGenBuffers(2, currentMusic.buffers);
BufferMusicStream(currentMusic.buffers[0]);
BufferMusicStream(currentMusic.buffers[1]);
alSourceQueueBuffers(currentMusic.source, 2, currentMusic.buffers);
alSourcePlay(currentMusic.source);
// NOTE: Regularly, we must check if a buffer has been processed and refill it: UpdateMusicStream()
}
else TraceLog(WARNING, "[%s] XM file could not be opened", fileName);
}
else TraceLog(WARNING, "[%s] Music extension not recognized, it can't be loaded", fileName);
}
@ -661,7 +686,7 @@ float GetMusicTimeLength(void)
float totalSeconds;
if (currentMusic.chipTune)
{
//totalSeconds = (float)samples; // Need to figure out how toget this
totalSeconds = currentMusic.totalLengthSeconds;
}
else
{
@ -678,8 +703,8 @@ float GetMusicTimePlayed(void)
if (currentMusic.chipTune)
{
uint64_t samples;
jar_xm_get_position(currentMusic.chipctx, NULL, NULL, NULL, &samples); // Unsure if this is the desired value
secondsPlayed = (float)samples / (currentMusic.sampleRate * currentMusic.channels);
jar_xm_get_position(currentMusic.chipctx, NULL, NULL, NULL, &samples);
secondsPlayed = (float)samples / (currentMusic.sampleRate * currentMusic.channels); // Not sure if this is the correct value
}
else
{
@ -700,38 +725,37 @@ float GetMusicTimePlayed(void)
static bool BufferMusicStream(ALuint buffer)
{
short pcm[MUSIC_BUFFER_SIZE];
int size = 0; // Total size of data steamed (in bytes)
int streamedBytes = 0; // Bytes of data obtained in one samples get
int streamedBytes = 0; // samples of data obtained, channels are not included in calculation
bool active = true; // We can get more data from stream (not finished)
if (musicEnabled)
{
while (size < MUSIC_BUFFER_SIZE)
if (currentMusic.chipTune) // There is no end of stream for xmfiles, once the end is reached zeros are generated for non looped chiptunes.
{
if (currentMusic.chipTune)
{
jar_xm_generate_samples(currentMusic.chipctx, pcm + size, (MUSIC_BUFFER_SIZE - size) / 2);
streamedBytes = (MUSIC_BUFFER_SIZE - size)/2; // There is no end of stream for xmfiles, once the end is reached zeros are generated for non looped chiptunes.
}
else
int readlen = MUSIC_BUFFER_SIZE / 2;
jar_xm_generate_samples_16bit(currentMusic.chipctx, pcm, readlen); // reads 2*readlen shorts and moves them to buffer+size memory location
size += readlen * currentMusic.channels; // Not sure if this is what it needs
}
else
{
while (size < MUSIC_BUFFER_SIZE)
{
streamedBytes = stb_vorbis_get_samples_short_interleaved(currentMusic.stream, currentMusic.channels, pcm + size, MUSIC_BUFFER_SIZE - size);
if (streamedBytes > 0) size += (streamedBytes*currentMusic.channels);
else break;
}
if (streamedBytes > 0) size += (streamedBytes*currentMusic.channels);
else break;
}
//TraceLog(DEBUG, "Streaming music data to buffer. Bytes streamed: %i", size);
TraceLog(DEBUG, "Streaming music data to buffer. Bytes streamed: %i", size);
}
if (size > 0)
{
alBufferData(buffer, currentMusic.format, pcm, size*sizeof(short), currentMusic.sampleRate);
currentMusic.totalSamplesLeft -= size;
if(currentMusic.totalSamplesLeft <= 0) active = false; // end if no more samples left
}
else
{
@ -781,16 +805,22 @@ void UpdateMusicStream(void)
// If no more data to stream, restart music (if loop)
if ((!active) && (currentMusic.loop))
{
stb_vorbis_seek_start(currentMusic.stream);
currentMusic.totalSamplesLeft = stb_vorbis_stream_length_in_samples(currentMusic.stream)*currentMusic.channels;
if(currentMusic.chipTune)
{
currentMusic.totalSamplesLeft = currentMusic.totalLengthSeconds * currentMusic.sampleRate;
}
else
{
stb_vorbis_seek_start(currentMusic.stream);
currentMusic.totalSamplesLeft = stb_vorbis_stream_length_in_samples(currentMusic.stream)*currentMusic.channels;
}
active = BufferMusicStream(buffer);
}
// Add refilled buffer to queue again... don't let the music stop!
alSourceQueueBuffers(currentMusic.source, 1, &buffer);
if (alGetError() != AL_NO_ERROR) TraceLog(WARNING, "Ogg playing, error buffering data...");
if (alGetError() != AL_NO_ERROR) TraceLog(WARNING, "Error buffering data...");
processed--;
}

33
src/jar_xm.h
View File

@ -59,10 +59,11 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <limits.h>
#include <string.h>
//-------------------------------------------------------------------------------
#ifdef __cplusplus
extern "C" {
@ -120,51 +121,47 @@ void jar_xm_free_context(jar_xm_context_t*);
/** Play the module and put the sound samples in an output buffer.
*
* @param output buffer of 2*numsamples elements
* @param output buffer of 2*numsamples elements (A left and right value for each sample)
* @param numsamples number of samples to generate
*/
void jar_xm_generate_samples(jar_xm_context_t*, float* output, size_t numsamples);
/** Play the module, resample from 32 bit to 16 bit, and put the sound samples in an output buffer.
*
* @param output buffer of 2*numsamples elements
* @param output buffer of 2*numsamples elements (A left and right value for each sample)
* @param numsamples number of samples to generate
*/
void jar_xm_generate_samples_16bit(jar_xm_context_t* ctx, short* output, size_t numsamples)
{
float* musicBuffer = malloc((2*numsamples)*sizeof(float));
short* musicBuffer2 = malloc((2*numsamples)*sizeof(short));
jar_xm_generate_samples(ctx, musicBuffer, numsamples);
int x;
for(x=0;x<2*numsamples;x++)
musicBuffer2[x] = musicBuffer[x] * SHRT_MAX;
if(output){
int x;
for(x=0;x<2*numsamples;x++)
output[x] = musicBuffer[x] * SHRT_MAX;
}
memcpy(output, musicBuffer2, (2*numsamples)*sizeof(short));
free(musicBuffer);
free(musicBuffer2);
}
/** Play the module, resample from 32 bit to 8 bit, and put the sound samples in an output buffer.
*
* @param output buffer of 2*numsamples elements
* @param output buffer of 2*numsamples elements (A left and right value for each sample)
* @param numsamples number of samples to generate
*/
void jar_xm_generate_samples_8bit(jar_xm_context_t* ctx, char* output, size_t numsamples)
{
float* musicBuffer = malloc((2*numsamples)*sizeof(float));
char* musicBuffer2 = malloc((2*numsamples)*sizeof(char));
jar_xm_generate_samples(ctx, musicBuffer, numsamples);
int x;
for(x=0;x<2*numsamples;x++)
musicBuffer2[x] = musicBuffer[x] * CHAR_MAX;
if(output){
int x;
for(x=0;x<2*numsamples;x++)
output[x] = musicBuffer[x] * CHAR_MAX;
}
memcpy(output, musicBuffer2, (2*numsamples)*sizeof(char));
free(musicBuffer);
free(musicBuffer2);
}

4
src/raylib.h
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@ -261,7 +261,9 @@
//----------------------------------------------------------------------------------
#ifndef __cplusplus
// Boolean type
typedef enum { false, true } bool;
#ifndef true
typedef enum { false, true } bool;
#endif
#endif
// byte type