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Diffstat (limited to 'src/3ds/audio.c')
| -rw-r--r-- | src/3ds/audio.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/src/3ds/audio.c b/src/3ds/audio.c new file mode 100644 index 0000000..a63c88e --- /dev/null +++ b/src/3ds/audio.c @@ -0,0 +1,316 @@ +#include "audio.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +const int MODE_NDSP = 1, + MODE_CSND = 2; + +int audioMode = 0; + +PHL_Sound loadWav(char* fname); +PHL_Music loadRaw(char* fname, u32 sampleRate, u32 bitsPerSample, u16 numChannels, u8 loop); + +void PHL_AudioInit() +{ + int loadMode = 0; + + Result rdsp = ndspInit(); + if (rdsp) { + //printf("\nNDSP Failed: %08lX\n", rdsp); + //loadMode = MODE_CSND; + loadMode = 0; //DSP or no sound for you! CSND a shit. + }else{ + loadMode = MODE_NDSP; + } + + if (loadMode == MODE_NDSP) { + //printf("\nNDSP Audio Mode"); + + ndspSetOutputMode(NDSP_OUTPUT_STEREO); + ndspSetOutputCount(1); + + audioMode = MODE_NDSP; + } + + else if (loadMode == MODE_CSND) { + //printf("\nCSND Audio Mode"); + + csndInit(); + audioMode = MODE_CSND; + } +} + +void PHL_AudioClose() +{ + if (audioMode == MODE_NDSP) { + ndspExit(); + } + + else if (audioMode == MODE_CSND) { + csndExit(); + } +} + +//Each system can use a custom music file format +PHL_Music PHL_LoadMusic(char* fname, int loop) +{ + return loadRaw(fname, 32000, 16, 1, loop); +} + +PHL_Music loadRaw(char* fname, u32 sampleRate, u32 bitsPerSample, u16 numChannels, u8 loop) +{ + PHL_Music result; + + char fullPath[128]; + strcpy(fullPath, "romfs:/"); + strcat(fullPath, fname); + strcat(fullPath, ".raw"); + + FILE* file; + if ((file = fopen(fullPath, "rb"))) + { + u32 size; + + fseek(file, 0, SEEK_END); + size = ftell(file); + + fseek(file, 0, SEEK_SET); + + result.sampleRate = sampleRate; + result.dataSize = size; + result.bitsPerSample = bitsPerSample; + result.numChannels = numChannels; + + if(bitsPerSample == 8) { + result.ndspFormat = (numChannels == 1) ? + NDSP_FORMAT_MONO_PCM8 : + NDSP_FORMAT_STEREO_PCM8; + } + else { + result.ndspFormat = (numChannels == 1) ? + NDSP_FORMAT_MONO_PCM16 : + NDSP_FORMAT_STEREO_PCM16; + } + + result.loop = loop; + + result.data = linearAlloc(size); + fread(result.data, 1, size, file); + + fclose(file); + } + + return result; + +} + +PHL_Sound PHL_LoadSound(char* fname) +{ + return loadWav(fname); +} + +PHL_Sound loadWav(char* fname) +{ + PHL_Sound snd; + + char fullPath[128]; + strcpy(fullPath, "romfs:/"); + strcat(fullPath, fname); + + FILE* f; + if ( (f = fopen(fullPath, "rb")) ) + { + //Check for valid fileName + u32 sig; + fread(&sig, 4, 1, f); + + if (sig == 0x46464952) //RIFF + { + u32 chunkSize; + u32 format; + + fread(&chunkSize, 4, 1, f); + fread(&format, 4, 1, f); + + if (format == 0x45564157) //WAVE + { + u32 subchunk1ID; + fread(&subchunk1ID, 4, 1, f); + + if (subchunk1ID == 0x20746D66) //fmt + { + u32 subchunk1Size; + u16 audioFormat; + u16 numChannels; + u32 sampleRate; + u32 byteRate; + u16 blockAlign; + u16 bitsPerSample; + + fread(&subchunk1Size, 4, 1, f); + fread(&audioFormat, 2, 1, f); + fread(&numChannels, 2, 1, f); + fread(&sampleRate, 4, 1, f); + fread(&byteRate, 4, 1, f); + fread(&blockAlign, 2, 1, f); + fread(&bitsPerSample, 2, 1, f); + + //Search for 'data' + for (int i = 0; i < 100; i++) { + u8 c; + fread(&c, 1, 1, f); + if (c == 0x64) { //'d' + fread(&c, 1, 1, f); + if (c == 0x61) { //'a' + fread(&c, 1, 1, f); + if (c == 0x74) { //'t' + fread(&c, 1, 1, f); + if (c == 0x61) { //'a' + i = 100; + } + } + } + } + } + + u32 subchunk2Size; + fread(&subchunk2Size, 4, 1, f); + + snd.numChannels = numChannels; + + if(bitsPerSample == 8) + { + snd.ndspFormat = (numChannels == 1) ? + NDSP_FORMAT_MONO_PCM8 : + NDSP_FORMAT_STEREO_PCM8; + } + else + { + snd.ndspFormat = (numChannels == 1) ? + NDSP_FORMAT_MONO_PCM16 : + NDSP_FORMAT_STEREO_PCM16; + } + + snd.sampleRate = sampleRate; + snd.dataSize = subchunk2Size; + snd.bitsPerSample = bitsPerSample; + + snd.data = (u8*)(linearAlloc(subchunk2Size)); + fread(snd.data, 1, subchunk2Size, f); + } + } + } + + fclose(f); + } + + return snd; +} + +void PHL_PlayMusic(PHL_Music snd) +{ + if (snd.data != NULL) { + if (audioMode == MODE_NDSP) + { + ndspChnReset(0); + ndspChnSetInterp(0, NDSP_INTERP_NONE); + ndspChnSetRate(0, (float)snd.sampleRate); + ndspChnSetFormat(0, snd.ndspFormat); + + + memset(&waveBuf[0], 0, sizeof(ndspWaveBuf)); + waveBuf[0].data_vaddr = (u32)(snd.data); + waveBuf[0].nsamples = snd.dataSize / (snd.bitsPerSample >> 3) / snd.numChannels; + waveBuf[0].looping = snd.loop; + waveBuf[0].status = NDSP_WBUF_FREE; + + DSP_FlushDataCache(snd.data, snd.dataSize); + ndspChnWaveBufAdd(0, &waveBuf[0]); + } + + else if (audioMode == MODE_CSND) + { + u32 flags = SOUND_FORMAT_16BIT; + + if (snd.loop == 1) { + flags = SOUND_FORMAT_16BIT | SOUND_REPEAT; + } + + int channel = (0 + 1) * 8; + csndPlaySound(channel, flags, snd.sampleRate, 1, 0, snd.data, snd.data, snd.dataSize); + } + } +} + +void PHL_PlaySound(PHL_Sound snd, int channel) +{ + if (snd.data != NULL) { + if (audioMode == MODE_NDSP) + { + ndspChnReset(channel); + ndspChnSetInterp(channel, NDSP_INTERP_NONE); + ndspChnSetRate(channel, (float)snd.sampleRate); + ndspChnSetFormat(channel, snd.ndspFormat); + + + memset(&waveBuf[channel], 0, sizeof(ndspWaveBuf)); + waveBuf[channel].data_vaddr = (u32)(snd.data); + waveBuf[channel].nsamples = snd.dataSize / (snd.bitsPerSample >> 3) / snd.numChannels; + waveBuf[channel].looping = false; + waveBuf[channel].status = NDSP_WBUF_FREE; + + DSP_FlushDataCache(snd.data, snd.dataSize); + ndspChnWaveBufAdd(channel, &waveBuf[channel]); + } + + else if (audioMode == MODE_CSND) + { + channel = (channel + 1) * 8; + csndPlaySound(channel, SOUND_FORMAT_16BIT, snd.sampleRate, 1, 0, snd.data, snd.data, snd.dataSize); + } + } +} + +void PHL_StopMusic() +{ + if (audioMode == MODE_NDSP) + { + ndspChnWaveBufClear(0); + } + + else if (audioMode == MODE_CSND) + { + CSND_SetPlayState(8, 0); + } +} + +void PHL_StopSound(PHL_Sound snd, int channel) +{ + if (audioMode == MODE_NDSP) + { + ndspChnWaveBufClear(channel); + } + + else if (audioMode == MODE_CSND) + { + channel = (channel + 1) * 8; + CSND_SetPlayState(channel, 0); + } +} + +void PHL_FreeMusic(PHL_Music snd) +{ + if (snd.data != NULL) { + linearFree(snd.data); + snd.data = NULL; + } +} + +void PHL_FreeSound(PHL_Sound snd) +{ + if (snd.data != NULL) { + linearFree(snd.data); + snd.data = NULL; + } +}
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