diff options
| author | Ray <[email protected]> | 2017-04-09 23:46:47 +0200 |
|---|---|---|
| committer | Ray <[email protected]> | 2017-04-09 23:46:47 +0200 |
| commit | f7bebf9861734c47d0840868f243b186a59a96ba (patch) | |
| tree | f5ca2d320c680ef5926b5455e4498646031cd5ac /docs/examples/src/audio/audio_raw_stream.c | |
| parent | 8374460c3986b16c68a6dea0643e9af541987d52 (diff) | |
| download | raylib-f7bebf9861734c47d0840868f243b186a59a96ba.tar.gz raylib-f7bebf9861734c47d0840868f243b186a59a96ba.zip | |
Working on web examples
Reorganizing folders
Review examples
Work on makefile and loader.html
Diffstat (limited to 'docs/examples/src/audio/audio_raw_stream.c')
| -rw-r--r-- | docs/examples/src/audio/audio_raw_stream.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/docs/examples/src/audio/audio_raw_stream.c b/docs/examples/src/audio/audio_raw_stream.c new file mode 100644 index 00000000..c044a7e0 --- /dev/null +++ b/docs/examples/src/audio/audio_raw_stream.c @@ -0,0 +1,111 @@ +/******************************************************************************************* +* +* raylib [audio] example - Raw audio streaming +* +* NOTE: This example requires OpenAL Soft library installed +* +* This example has been created using raylib 1.6 (www.raylib.com) +* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) +* +* Copyright (c) 2015 Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#include "raylib.h" + +#include <stdlib.h> // Required for: malloc(), free() +#include <math.h> // Required for: sinf() + +#define MAX_SAMPLES 20000 + +int main() +{ + // Initialization + //-------------------------------------------------------------------------------------- + int screenWidth = 800; + int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [audio] example - raw audio streaming"); + + InitAudioDevice(); // Initialize audio device + + // Init raw audio stream (sample rate: 22050, sample size: 32bit-float, channels: 1-mono) + AudioStream stream = InitAudioStream(22050, 32, 1); + + // Fill audio stream with some samples (sine wave) + float *data = (float *)malloc(sizeof(float)*MAX_SAMPLES); + + for (int i = 0; i < MAX_SAMPLES; i++) + { + data[i] = sinf(((2*PI*(float)i)/2)*DEG2RAD); + } + + // NOTE: The generated MAX_SAMPLES do not fit to close a perfect loop + // for that reason, there is a clip everytime audio stream is looped + + PlayAudioStream(stream); + + int totalSamples = MAX_SAMPLES; + int samplesLeft = totalSamples; + + Vector2 position = { 0, 0 }; + + SetTargetFPS(30); // Set our game to run at 30 frames-per-second + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + + // Refill audio stream if required + if (IsAudioBufferProcessed(stream)) + { + int numSamples = 0; + if (samplesLeft >= 4096) numSamples = 4096; + else numSamples = samplesLeft; + + UpdateAudioStream(stream, data + (totalSamples - samplesLeft), numSamples); + + samplesLeft -= numSamples; + + // Reset samples feeding (loop audio) + if (samplesLeft <= 0) samplesLeft = totalSamples; + } + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + DrawText("SINE WAVE SHOULD BE PLAYING!", 240, 140, 20, LIGHTGRAY); + + // NOTE: Draw a part of the sine wave (only screen width) + for (int i = 0; i < GetScreenWidth(); i++) + { + position.x = i; + position.y = 250 + 50*data[i]; + + DrawPixelV(position, RED); + } + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + free(data); // Unload sine wave data + + CloseAudioStream(stream); // Close raw audio stream and delete buffers from RAM + + CloseAudioDevice(); // Close audio device (music streaming is automatically stopped) + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
\ No newline at end of file |
