| 20 | } |
| 21 | |
| 22 | void Sound::init() |
| 23 | { |
| 24 | if(mSampleData != NULL) |
| 25 | deinit(); |
| 26 | |
| 27 | if(mPath.empty()) |
| 28 | return; |
| 29 | |
| 30 | //load wav file via SDL |
| 31 | SDL_AudioSpec wave; |
| 32 | Uint8 * data = NULL; |
| 33 | Uint32 dlen = 0; |
| 34 | if (SDL_LoadWAV(mPath.c_str(), &wave, &data, &dlen) == NULL) { |
| 35 | LOG(LogError) << "Error loading sound \"" << mPath << "\"!\n" << " " << SDL_GetError(); |
| 36 | return; |
| 37 | } |
| 38 | //build conversion buffer |
| 39 | SDL_AudioCVT cvt; |
| 40 | SDL_BuildAudioCVT(&cvt, wave.format, wave.channels, wave.freq, AUDIO_S16, 2, 44100); |
| 41 | //copy data to conversion buffer |
| 42 | cvt.len = dlen; |
| 43 | cvt.buf = new Uint8[cvt.len * cvt.len_mult]; |
| 44 | memcpy(cvt.buf, data, dlen); |
| 45 | //convert buffer to stereo, 16bit, 44.1kHz |
| 46 | if (SDL_ConvertAudio(&cvt) < 0) { |
| 47 | LOG(LogError) << "Error converting sound \"" << mPath << "\" to 44.1kHz, 16bit, stereo format!\n" << " " << SDL_GetError(); |
| 48 | delete[] cvt.buf; |
| 49 | } |
| 50 | else { |
| 51 | //worked. set up member data |
| 52 | SDL_LockAudio(); |
| 53 | mSampleData = cvt.buf; |
| 54 | mSampleLength = cvt.len_cvt; |
| 55 | mSamplePos = 0; |
| 56 | mSampleFormat.channels = 2; |
| 57 | mSampleFormat.freq = 44100; |
| 58 | mSampleFormat.format = AUDIO_S16; |
| 59 | SDL_UnlockAudio(); |
| 60 | } |
| 61 | //free wav data now |
| 62 | SDL_FreeWAV(data); |
| 63 | } |
| 64 | |
| 65 | void Sound::deinit() |
| 66 | { |