ADDED: Audio recording

examples/audio/audio_stream_recording.c

@@ -0,0 +1,148 @@
+/*******************************************************************************************
+*
+*   raylib [audio] example - stream recording
+*
+*   Example complexity rating: [★★★☆] 3/4
+*
+*   Example originally created with raylib 6.0, last time updated with raylib 6.0
+*
+*   Example created by Jairo Correa (@jn-jairo) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2026 Jairo Correa (@jn-jairo)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <stdlib.h> // Required for: NULL
+#include <string.h> // Required for: memcpy()
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+static unsigned int maxFrameCount = 0;
+static Wave wave = { 0 };
+
+//------------------------------------------------------------------------------------
+// Module Functions Declaration
+//------------------------------------------------------------------------------------
+static void RecordingCallback(const void *framesIn, unsigned int frameCount);
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [audio] example - stream recording");
+
+    InitAudioDevice();
+    InitAudioRecordingDevice();
+    // InitAudioRecordingDeviceEx(24000, 16, 1);
+
+    // Configure it so that RecordingCallback is called whenever new samples are read from the microphone
+    SetAudioRecordingCallback(RecordingCallback);
+
+    // Configure the wave to match the recording
+    wave.sampleRate = GetAudioRecordingSampleRate();
+    wave.sampleSize = GetAudioRecordingSampleSize();
+    wave.channels = GetAudioRecordingChannels();
+
+    // Allocate buffer for the audio recording
+    maxFrameCount = wave.sampleRate*5; // 5 seconds
+    wave.data = RL_CALLOC(maxFrameCount*wave.channels, wave.sampleSize/8);
+
+    Sound sound = { 0 };
+
+    float timeRecorded = 0.0f;
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+
+        // Space key pressed or the recording buffer is full
+        if (IsKeyPressed(KEY_SPACE) || (IsAudioRecording() && (wave.frameCount == maxFrameCount)))
+        {
+            if (IsAudioRecording())
+            {
+                StopAudioRecording();
+
+                // Reload and play the sound
+                UnloadSound(sound);
+                sound = LoadSoundFromWave(wave);
+                PlaySound(sound);
+            }
+            else
+            {
+                // Stop the sound and reset the recording frameCount
+                StopSound(sound);
+                wave.frameCount = 0;
+
+                StartAudioRecording();
+            }
+        }
+
+        // Get timeRecorded scaled to bar dimensions
+        timeRecorded = ((float)wave.frameCount/(float)maxFrameCount)*(screenWidth - 40);
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // Draw time bar
+            DrawRectangle(20, screenHeight - 20 - 12, screenWidth - 40, 12, LIGHTGRAY);
+            DrawRectangle(20, screenHeight - 20 - 12, (int)timeRecorded, 12, MAROON);
+            DrawRectangleLines(20, screenHeight - 20 - 12, screenWidth - 40, 12, GRAY);
+
+            // Draw help instructions
+            DrawText("Press SPACE to START/STOP recording the sound!", 130, 180, 20, LIGHTGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseAudioRecordingDevice(); // Close audio recording device (recording is automatically stopped)
+    CloseAudioDevice();          // Close audio device (music streaming is automatically stopped)
+
+    UnloadSound(sound);
+    UnloadWave(wave);
+
+    CloseWindow();               // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+
+//------------------------------------------------------------------------------------
+// Module Functions Definition
+//------------------------------------------------------------------------------------
+static void RecordingCallback(const void *framesIn, unsigned int frameCount)
+{
+    // Check how many frames left in the buffer
+    unsigned int framesLeft = maxFrameCount - wave.frameCount;
+
+    // Do not overflow the buffer
+    if (framesLeft == 0) return;
+    unsigned int framesToCopy = (frameCount < framesLeft)? frameCount : framesLeft;
+
+    // Append the new data
+    memcpy((unsigned char *)wave.data + wave.frameCount*wave.channels*wave.sampleSize/8, framesIn, framesToCopy*wave.channels*wave.sampleSize/8);
+    wave.frameCount += framesToCopy;
+}