Reorganize examples folder

examples/audio/audio_raw_stream.c

@@ -0,0 +1,114 @@
+/*******************************************************************************************
+*
+*   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             22050
+#define MAX_SAMPLES_PER_UPDATE   4096
+
+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: 16bit-short, channels: 1-mono)
+    AudioStream stream = InitAudioStream(22050, 16, 1);
+    
+    // Generate samples data from sine wave
+    short *data = (short *)malloc(sizeof(short)*MAX_SAMPLES);
+    
+    // TODO: Review data generation, it seems data is discontinued for loop,
+    // for that reason, there is a clip everytime audio stream is looped...
+    for (int i = 0; i < MAX_SAMPLES; i++)
+    {
+        data[i] = (short)(sinf(((2*PI*(float)i)/2)*DEG2RAD)*32000);
+    }
+    
+    PlayAudioStream(stream);        // Start processing stream buffer (no data loaded currently)
+    
+    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
+        // NOTE: Every update we check if stream data has been already consumed and we update
+        // buffer with new data from the generated samples, we upload data at a rate (MAX_SAMPLES_PER_UPDATE),
+        // but notice that at some point we update < MAX_SAMPLES_PER_UPDATE data...
+        if (IsAudioBufferProcessed(stream)) 
+        {
+            int numSamples = 0;
+            if (samplesLeft >= MAX_SAMPLES_PER_UPDATE) numSamples = MAX_SAMPLES_PER_UPDATE;
+            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, proportional values)
+            for (int i = 0; i < GetScreenWidth(); i++)
+            {
+                position.x = i;
+                position.y = 250 + 50*data[i]/32000;
+                
+                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;
+}