diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/audio/audio_music_stream.c | 87 |
1 files changed, 2 insertions, 85 deletions
diff --git a/examples/audio/audio_music_stream.c b/examples/audio/audio_music_stream.c index 8d583737..ade7cebc 100644 --- a/examples/audio/audio_music_stream.c +++ b/examples/audio/audio_music_stream.c @@ -2,7 +2,7 @@ * * raylib [audio] example - Music playing (streaming) * -* Example originally created with raylib 1.3, last time updated with raylib 4.2 +* Example originally created with raylib 1.3, last time updated with raylib 4.0 * * Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, * BSD-like license that allows static linking with closed source software @@ -13,49 +13,6 @@ #include "raylib.h" -#include <stdlib.h> // Required for: NULL - -// Audio effect: lowpass filter -static void AudioProcessEffectLPF(void *buffer, unsigned int frames) -{ - static float low[2] = { 0.0f, 0.0f }; - static const float cutoff = 70.0f / 44100.0f; // 70 Hz lowpass filter - const float k = cutoff / (cutoff + 0.1591549431f); // RC filter formula - - for (unsigned int i = 0; i < frames*2; i += 2) - { - float l = ((float *)buffer)[i], r = ((float *)buffer)[i + 1]; - low[0] += k * (l - low[0]); - low[1] += k * (r - low[1]); - ((float *)buffer)[i] = low[0]; - ((float *)buffer)[i + 1] = low[1]; - } -} - -static float *delayBuffer = NULL; -static unsigned int delayBufferSize = 0; -static unsigned int delayReadIndex = 2; -static unsigned int delayWriteIndex = 0; - -// Audio effect: delay -static void AudioProcessEffectDelay(void *buffer, unsigned int frames) -{ - for (unsigned int i = 0; i < frames*2; i += 2) - { - float leftDelay = delayBuffer[delayReadIndex++]; // ERROR: Reading buffer -> WHY??? Maybe thread related??? - float rightDelay = delayBuffer[delayReadIndex++]; - - if (delayReadIndex == delayBufferSize) delayReadIndex = 0; - - ((float *)buffer)[i] = 0.5f*((float *)buffer)[i] + 0.5f*leftDelay; - ((float *)buffer)[i + 1] = 0.5f*((float *)buffer)[i + 1] + 0.5f*rightDelay; - - delayBuffer[delayWriteIndex++] = ((float *)buffer)[i]; - delayBuffer[delayWriteIndex++] = ((float *)buffer)[i + 1]; - if (delayWriteIndex == delayBufferSize) delayWriteIndex = 0; - } -} - //------------------------------------------------------------------------------------ // Program main entry point //------------------------------------------------------------------------------------ @@ -72,19 +29,12 @@ int main(void) Music music = LoadMusicStream("resources/country.mp3"); - // Allocate buffer for the delay effect - delayBufferSize = 48000 * 2; - delayBuffer = (float *)RL_CALLOC(delayBufferSize, sizeof(float)); // 1 second delay (device sampleRate*channels) - PlayMusicStream(music); - - bool hasFilter = true; - bool hasDelay = true; float timePlayed = 0.0f; // Time played normalized [0.0f..1.0f] bool pause = false; // Music playing paused - SetTargetFPS(60); // Set our game to run at 60 frames-per-second + SetTargetFPS(30); // Set our game to run at 60 frames-per-second //-------------------------------------------------------------------------------------- // Main game loop @@ -94,37 +44,6 @@ int main(void) //---------------------------------------------------------------------------------- UpdateMusicStream(music); // Update music buffer with new stream data - // Restart music playing (stop and play) - if (IsKeyPressed(KEY_SPACE)) - { - StopMusicStream(music); - PlayMusicStream(music); - } - - // Pause/Resume music playing - if (IsKeyPressed(KEY_P)) - { - pause = !pause; - - if (pause) PauseMusicStream(music); - else ResumeMusicStream(music); - } - - // Add/Remove effect: lowpass filter - if (IsKeyPressed(KEY_F)) - { - hasFilter = !hasFilter; - if (hasFilter) AttachAudioStreamProcessor(music.stream, AudioProcessEffectLPF); - else DetachAudioStreamProcessor(music.stream, AudioProcessEffectLPF); - } - - // Add/Remove effect: delay - if (IsKeyPressed(KEY_D)) - { - hasDelay = !hasDelay; - if (hasDelay) AttachAudioStreamProcessor(music.stream, AudioProcessEffectDelay); - else DetachAudioStreamProcessor(music.stream, AudioProcessEffectDelay); - } // Get normalized time played for current music stream timePlayed = GetMusicTimePlayed(music)/GetMusicTimeLength(music); @@ -156,8 +75,6 @@ int main(void) CloseAudioDevice(); // Close audio device (music streaming is automatically stopped) - RL_FREE(delayBuffer); // Free delay buffer - CloseWindow(); // Close window and OpenGL context //-------------------------------------------------------------------------------------- |