Bundle raylib C sources and switch to develop branch

raylib/utils.c

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+/**********************************************************************************************
+*
+*   raylib.utils
+*
+*   Some utility functions
+*
+*   External libs:
+*       tinfl           - zlib DEFLATE algorithm decompression
+*       stb_image_write - PNG writting functions
+*
+*   Module Configuration Flags:
+*       DO_NOT_TRACE_DEBUG_MSGS - Avoid showing DEBUG TraceLog() messages
+*
+*
+*   Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+#include "utils.h"
+
+#if defined(PLATFORM_ANDROID)
+    #include <errno.h>
+    #include <android/log.h>
+    #include <android/asset_manager.h>
+#endif
+
+#include <stdlib.h>                 // Required for: malloc(), free()
+#include <stdio.h>                  // Required for: fopen(), fclose(), fputc(), fwrite(), printf(), fprintf(), funopen()
+#include <stdarg.h>                 // Required for: va_list, va_start(), vfprintf(), va_end()
+#include <string.h>                 // Required for: strlen(), strrchr(), strcmp()
+
+#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
+    #define STB_IMAGE_WRITE_IMPLEMENTATION
+    #include "external/stb_image_write.h"    // Required for: stbi_write_bmp(), stbi_write_png()
+#endif
+
+#define RRES_IMPLEMENTATION
+#include "rres.h"
+
+//#define NO_TRACELOG                 // Avoid TraceLog() output (any type)
+#define DO_NOT_TRACE_DEBUG_MSGS     // Avoid DEBUG messages tracing
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+AAssetManager *assetManager;
+#endif
+
+//----------------------------------------------------------------------------------
+// Module specific Functions Declaration
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+static int android_read(void *cookie, char *buf, int size);
+static int android_write(void *cookie, const char *buf, int size);
+static fpos_t android_seek(void *cookie, fpos_t offset, int whence);
+static int android_close(void *cookie);
+#endif
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition - Utilities
+//----------------------------------------------------------------------------------
+// Outputs a trace log message
+void TraceLog(int msgType, const char *text, ...)
+{
+#if !defined(NO_TRACELOG)
+    static char buffer[128];
+    int traceDebugMsgs = 1;
+    
+#ifdef DO_NOT_TRACE_DEBUG_MSGS
+    traceDebugMsgs = 0;
+#endif
+
+    switch(msgType)
+    {
+        case INFO: strcpy(buffer, "INFO: "); break;
+        case ERROR: strcpy(buffer, "ERROR: "); break;
+        case WARNING: strcpy(buffer, "WARNING: "); break;
+        case DEBUG: strcpy(buffer, "DEBUG: "); break;
+        default: break;
+    }
+
+    strcat(buffer, text);
+    strcat(buffer, "\n");
+
+    va_list args;
+    va_start(args, text);
+
+#if defined(PLATFORM_ANDROID)
+    switch(msgType)
+    {
+        case INFO: __android_log_vprint(ANDROID_LOG_INFO, "raylib", buffer, args); break;
+        case ERROR: __android_log_vprint(ANDROID_LOG_ERROR, "raylib", buffer, args); break;
+        case WARNING: __android_log_vprint(ANDROID_LOG_WARN, "raylib", buffer, args); break;
+        case DEBUG: if (traceDebugMsgs) __android_log_vprint(ANDROID_LOG_DEBUG, "raylib", buffer, args); break;
+        default: break;
+    }
+#else
+    if ((msgType != DEBUG) || ((msgType == DEBUG) && (traceDebugMsgs))) vprintf(buffer, args);
+#endif
+
+    va_end(args);
+
+    if (msgType == ERROR) exit(1);  // If ERROR message, exit program
+    
+#endif  // NO_TRACELOG
+}
+
+#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
+// Creates a BMP image file from an array of pixel data
+void SaveBMP(const char *fileName, unsigned char *imgData, int width, int height, int compSize)
+{
+    stbi_write_bmp(fileName, width, height, compSize, imgData);
+}
+
+// Creates a PNG image file from an array of pixel data
+void SavePNG(const char *fileName, unsigned char *imgData, int width, int height, int compSize)
+{
+    stbi_write_png(fileName, width, height, compSize, imgData, width*compSize);
+}
+#endif
+
+#if defined(PLATFORM_ANDROID)
+// Initialize asset manager from android app
+void InitAssetManager(AAssetManager *manager)
+{
+    assetManager = manager;
+}
+
+// Replacement for fopen
+FILE *android_fopen(const char *fileName, const char *mode)
+{
+    if (mode[0] == 'w') return NULL;
+
+    AAsset *asset = AAssetManager_open(assetManager, fileName, 0);
+
+    if (!asset) return NULL;
+
+    return funopen(asset, android_read, android_write, android_seek, android_close);
+}
+#endif
+
+// Keep track of memory allocated
+// NOTE: mallocType defines the type of data allocated
+/*
+void RecordMalloc(int mallocType, int mallocSize, const char *msg)
+{
+    // TODO: Investigate how to record memory allocation data...
+    // Maybe creating my own malloc function...
+}
+*/
+
+// Get the extension for a filename
+const char *GetExtension(const char *fileName)
+{
+    const char *dot = strrchr(fileName, '.');
+    if (!dot || dot == fileName) return "";
+    return (dot + 1);
+}
+
+//----------------------------------------------------------------------------------
+// Module specific Functions Definition
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+static int android_read(void *cookie, char *buf, int size)
+{
+    return AAsset_read((AAsset *)cookie, buf, size);
+}
+
+static int android_write(void *cookie, const char *buf, int size)
+{
+    TraceLog(ERROR, "Can't provide write access to the APK");
+
+    return EACCES;
+}
+
+static fpos_t android_seek(void *cookie, fpos_t offset, int whence)
+{
+    return AAsset_seek((AAsset *)cookie, offset, whence);
+}
+
+static int android_close(void *cookie)
+{
+    AAsset_close((AAsset *)cookie);
+    return 0;
+}
+#endif