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| author | Ray San <raysan5@gmail.com> | 2017-02-06 18:48:56 +0100 |
|---|---|---|
| committer | Ray San <raysan5@gmail.com> | 2017-02-06 18:48:56 +0100 |
| commit | 1f6eb1fc61d2cc0cca54a79c1516432f09c86313 (patch) | |
| tree | 9ddff0e6ddba65004557c3628a3d56dfaf47ea4b /docs/examples/src/audio_raw_stream.c | |
| parent | f2f05a734d4999ffdc19629c838f46914650bbd0 (diff) | |
| download | raylib-1f6eb1fc61d2cc0cca54a79c1516432f09c86313.tar.gz raylib-1f6eb1fc61d2cc0cca54a79c1516432f09c86313.zip | |
Moved raylib webpage to docs folder
raylib webpage has been completely reorganized and moved from gh-pages
(a pain to work with) to docs folder. Useless libs have been removed,
webs have been renamed, etc.
Now it would be easier (hopefully) to update webpage. :)
Diffstat (limited to 'docs/examples/src/audio_raw_stream.c')
| -rw-r--r-- | docs/examples/src/audio_raw_stream.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/docs/examples/src/audio_raw_stream.c b/docs/examples/src/audio_raw_stream.c new file mode 100644 index 00000000..c044a7e0 --- /dev/null +++ b/docs/examples/src/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; +}
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