From e01a1ba10c5be8a98f6aca0f24d95dc1738010ac Mon Sep 17 00:00:00 2001
From: Ray <raysan5@gmail.com>
Date: Thu, 18 May 2017 18:57:11 +0200
Subject: [PATCH] Support Gif recording
---
src/core.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 83 insertions(+), 4 deletions(-)
diff --git a/src/core.c b/src/core.c
index fa3687474..07f3bb07b 100644
--- a/src/core.c
+++ b/src/core.c
@@ -44,6 +44,9 @@
* #define SUPPORT_BUSY_WAIT_LOOP
* Use busy wait loop for timming sync, if not defined, a high-resolution timer is setup and used
*
+* #define SUPPORT_GIF_RECORDING
+* Allow automatic gif recording of current screen pressing CTRL+F12, defined in KeyCallback()
+*
* DEPENDENCIES:
* GLFW3 - Manage graphic device, OpenGL context and inputs on PLATFORM_DESKTOP (Windows, Linux, OSX)
* raymath - 3D math functionality (Vector3, Matrix, Quaternion)
@@ -79,6 +82,7 @@
#define SUPPORT_CAMERA_SYSTEM
#define SUPPORT_GESTURES_SYSTEM
#define SUPPORT_BUSY_WAIT_LOOP
+#define SUPPORT_GIF_RECORDING
//-------------------------------------------------
#include "raylib.h"
@@ -97,7 +101,12 @@
#if defined(SUPPORT_CAMERA_SYSTEM) && !defined(PLATFORM_ANDROID)
#define CAMERA_IMPLEMENTATION
- #include "camera.h" // Camera system functionality
+ #include "camera.h" // Camera system functionality
+#endif
+
+#if defined(SUPPORT_GIF_RECORDING)
+ #define GIF_IMPLEMENTATION
+ #include "external/gif.h" // Support GIF recording
#endif
#include <stdio.h> // Standard input / output lib
@@ -318,6 +327,12 @@ static double targetTime = 0.0; // Desired time for one frame, if 0
static char configFlags = 0; // Configuration flags (bit based)
static bool showLogo = false; // Track if showing logo at init is enabled
+#if defined(SUPPORT_GIF_RECORDING)
+static GifWriter gifWriter;
+static int gifFramesCounter = 0;
+static bool gifRecording = false;
+#endif
+
//----------------------------------------------------------------------------------
// Other Modules Functions Declaration (required by core)
//----------------------------------------------------------------------------------
@@ -520,6 +535,14 @@ void InitWindow(int width, int height, void *state)
// Close window and unload OpenGL context
void CloseWindow(void)
{
+#if defined(SUPPORT_GIF_RECORDING)
+ if (gifRecording)
+ {
+ GifEnd(&gifWriter);
+ gifRecording = false;
+ }
+#endif
+
#if defined(SUPPORT_DEFAULT_FONT)
UnloadDefaultFont();
#endif
@@ -770,6 +793,35 @@ void EndDrawing(void)
{
rlglDraw(); // Draw Buffers (Only OpenGL 3+ and ES2)
+#if defined(SUPPORT_GIF_RECORDING)
+
+ #define GIF_RECORD_FRAMERATE 10
+
+ if (gifRecording)
+ {
+ gifFramesCounter++;
+
+ // NOTE: We record one gif frame every 10 game frames
+ if ((gifFramesCounter%GIF_RECORD_FRAMERATE) == 0)
+ {
+ // Get image data for the current frame (from backbuffer)
+ // NOTE: This process is very slow... :(
+ unsigned char *screenData = rlglReadScreenPixels(screenWidth, screenHeight);
+ GifWriteFrame(&gifWriter, screenData, screenWidth, screenHeight, 10, 8, false);
+
+ free(screenData); // Free image data
+ }
+
+ if (((gifFramesCounter/15)%2) == 1)
+ {
+ DrawCircle(30, screenHeight - 20, 10, RED);
+ DrawText("RECORDING", 50, screenHeight - 25, 10, MAROON);
+ }
+
+ rlglDraw(); // Draw RECORDING message
+ }
+#endif
+
SwapBuffers(); // Copy back buffer to front buffer
PollInputEvents(); // Poll user events
@@ -2397,10 +2449,37 @@ static void KeyCallback(GLFWwindow *window, int key, int scancode, int action, i
#if defined(PLATFORM_DESKTOP)
else if (key == GLFW_KEY_F12 && action == GLFW_PRESS)
{
- TakeScreenshot(FormatText("screenshot%03i.png", screenshotCounter));
- screenshotCounter++;
+ #if defined(SUPPORT_GIF_RECORDING)
+ if (mods == GLFW_MOD_CONTROL)
+ {
+ if (gifRecording)
+ {
+ GifEnd(&gifWriter);
+ gifRecording = false;
+
+ TraceLog(INFO, "End animated GIF recording");
+ }
+ else
+ {
+ gifRecording = true;
+ gifFramesCounter = 0;
+
+ // NOTE: delay represents the time between frames in the gif, if we capture a gif frame every
+ // 10 game frames and each frame trakes 16.6ms (60fps), delay between gif frames should be ~16.6*10.
+ GifBegin(&gifWriter, FormatText("screenrec%03i.gif", screenshotCounter), screenWidth, screenHeight, (int)(GetFrameTime()*10.0f), 8, false);
+ screenshotCounter++;
+
+ TraceLog(INFO, "Begin animated GIF recording: %s", FormatText("screenrec%03i.gif", screenshotCounter));
+ }
+ }
+ else
+ #endif // SUPPORT_GIF_RECORDING
+ {
+ TakeScreenshot(FormatText("screenshot%03i.png", screenshotCounter));
+ screenshotCounter++;
+ }
}
-#endif
+#endif // PLATFORM_DESKTOP
else
{
currentKeyState[key] = action;