diff --git a/src/audio.c b/src/audio.c index 93b83599..0be257d9 100644 --- a/src/audio.c +++ b/src/audio.c @@ -42,9 +42,6 @@ #include // Required for strcmp() #include // Used for .WAV loading -#define JAR_XM_IMPLEMENTATION -#include "jar_xm.h" // For playing .xm files - #if defined(AUDIO_STANDALONE) #include // 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(¤tMusic.chipctx, currentMusic.sampleRate, fileName)) + // only stereo is supported for xm + if(!jar_xm_create_context_from_file(¤tMusic.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, ¤tMusic.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--; } diff --git a/src/jar_xm.h b/src/jar_xm.h index 4fda948b..f9ddb511 100644 --- a/src/jar_xm.h +++ b/src/jar_xm.h @@ -59,10 +59,11 @@ #include #include #include -#include #include #include + + //------------------------------------------------------------------------------- #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); } diff --git a/src/raylib.h b/src/raylib.h index 0c80b957..699fbbdb 100644 --- a/src/raylib.h +++ b/src/raylib.h @@ -261,7 +261,9 @@ //---------------------------------------------------------------------------------- #ifndef __cplusplus // Boolean type -typedef enum { false, true } bool; + #ifndef true + typedef enum { false, true } bool; + #endif #endif // byte type