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share/public_html/static/music_inc/src/miniaudio.h  view on Meta::CPAN

        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_pink(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = ma_noise_f32_pink(pNoise, iChannel);
                }
            }
        }
    } else if (pNoise->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_int16 s = ma_noise_s16_pink(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = ma_noise_s16_pink(pNoise, iChannel);
                }
            }
        }
    } else {
        ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
        ma_uint32 bpf = bps * pNoise->config.channels;
        
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_pink(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    float s = ma_noise_f32_pink(pNoise, iChannel);
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        }
    }

    return frameCount;
}


static MA_INLINE float ma_noise_f32_brownian(ma_noise* pNoise, ma_uint32 iChannel)
{
    double result;
    
    result = (ma_lcg_rand_f64(&pNoise->lcg) + pNoise->state.brownian.accumulation[iChannel]);
    result /= 1.005; /* Don't escape the -1..1 range on average. */

    pNoise->state.brownian.accumulation[iChannel] = result;
    result /= 20;

    return (float)(result * pNoise->config.amplitude);
}

static MA_INLINE ma_int16 ma_noise_s16_brownian(ma_noise* pNoise, ma_uint32 iChannel)
{
    return ma_pcm_sample_f32_to_s16(ma_noise_f32_brownian(pNoise, iChannel));
}

static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__brownian(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;

    if (pNoise->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutF32[iFrame*pNoise->config.channels + iChannel] = ma_noise_f32_brownian(pNoise, iChannel);
                }
            }
        }
    } else if (pNoise->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_int16 s = ma_noise_s16_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    pFramesOutS16[iFrame*pNoise->config.channels + iChannel] = ma_noise_s16_brownian(pNoise, iChannel);
                }
            }
        }
    } else {
        ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
        ma_uint32 bpf = bps * pNoise->config.channels;
        
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < pNoise->config.channels; iChannel += 1) {
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }