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Update audio_music_stream.c

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Ray 2022-03-30 20:25:46 +02:00
parent 1612ba63ab
commit 709ec1663d
1 changed files with 11 additions and 9 deletions
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20
examples/audio/audio_music_stream.c
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@ -11,8 +11,10 @@
#include "raylib.h" #include "raylib.h"
#include <stdlib.h> // Required for: NULL
// Audio effect: lowpass filter // Audio effect: lowpass filter
static void AudioProcessEffectLPF(float *buffer, unsigned int frames) static void AudioProcessEffectLPF(void *buffer, unsigned int frames)
{ {
static float low[2] = { 0.0f, 0.0f }; static float low[2] = { 0.0f, 0.0f };
static const float cutoff = 70.0f / 44100.0f; // 70 Hz lowpass filter static const float cutoff = 70.0f / 44100.0f; // 70 Hz lowpass filter
@ -20,11 +22,11 @@ static void AudioProcessEffectLPF(float *buffer, unsigned int frames)
for (unsigned int i = 0; i < frames*2; i += 2) for (unsigned int i = 0; i < frames*2; i += 2)
{ {
float l = buffer[i], r = buffer[i + 1]; float l = ((float *)buffer)[i], r = ((float *)buffer)[i + 1];
low[0] += k * (l - low[0]); low[0] += k * (l - low[0]);
low[1] += k * (r - low[1]); low[1] += k * (r - low[1]);
buffer[i] = low[0]; ((float *)buffer)[i] = low[0];
buffer[i + 1] = low[1]; ((float *)buffer)[i + 1] = low[1];
} }
} }
@ -34,7 +36,7 @@ static unsigned int delayReadIndex = 2;
static unsigned int delayWriteIndex = 0; static unsigned int delayWriteIndex = 0;
// Audio effect: delay // Audio effect: delay
static void AudioProcessEffectDelay(float *buffer, unsigned int frames) static void AudioProcessEffectDelay(void *buffer, unsigned int frames)
{ {
for (unsigned int i = 0; i < frames*2; i += 2) for (unsigned int i = 0; i < frames*2; i += 2)
{ {
@ -43,11 +45,11 @@ static void AudioProcessEffectDelay(float *buffer, unsigned int frames)
if (delayReadIndex == delayBufferSize) delayReadIndex = 0; if (delayReadIndex == delayBufferSize) delayReadIndex = 0;
buffer[i] = 0.5f*buffer[i] + 0.5f*leftDelay; ((float *)buffer)[i] = 0.5f*((float *)buffer)[i] + 0.5f*leftDelay;
buffer[i + 1] = 0.5f*buffer[i + 1] + 0.5f*rightDelay; ((float *)buffer)[i + 1] = 0.5f*((float *)buffer)[i + 1] + 0.5f*rightDelay;
delayBuffer[delayWriteIndex++] = buffer[i]; delayBuffer[delayWriteIndex++] = ((float *)buffer)[i];
delayBuffer[delayWriteIndex++] = buffer[i + 1]; delayBuffer[delayWriteIndex++] = ((float *)buffer)[i + 1];
if (delayWriteIndex == delayBufferSize) delayWriteIndex = 0; if (delayWriteIndex == delayBufferSize) delayWriteIndex = 0;
} }
} }