292 lines
9.7 KiB
C
292 lines
9.7 KiB
C
/**********************************************************************************************
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*
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* raylib.utils
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*
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* Utils Functions Definitions
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*
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* Uses external libs:
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* tinfl - zlib DEFLATE algorithm decompression lib
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* stb_image_write - PNG writting functions
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*
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* Copyright (c) 2014 Ramon Santamaria (Ray San - raysan@raysanweb.com)
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*
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* This software is provided "as-is", without any express or implied warranty. In no event
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* will the authors be held liable for any damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose, including commercial
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* applications, and to alter it and redistribute it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not claim that you
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* wrote the original software. If you use this software in a product, an acknowledgment
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* in the product documentation would be appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
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* as being the original software.
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*
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* 3. This notice may not be removed or altered from any source distribution.
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*
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**********************************************************************************************/
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#include "utils.h"
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#if defined(PLATFORM_ANDROID)
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#include <errno.h>
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#include <android/log.h>
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#include <android/asset_manager.h>
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#endif
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#include <stdlib.h> // malloc(), free()
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#include <stdio.h> // printf(), fprintf()
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#include <stdarg.h> // Used for functions with variable number of parameters (TraceLog())
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//#include <string.h> // String management functions: strlen(), strrchr(), strcmp()
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#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
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#define STB_IMAGE_WRITE_IMPLEMENTATION
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#include "stb_image_write.h" // Create PNG file
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#endif
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#include "tinfl.c"
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//----------------------------------------------------------------------------------
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// Global Variables Definition
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//----------------------------------------------------------------------------------
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#if defined(PLATFORM_ANDROID)
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AAssetManager *assetManager;
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#endif
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//----------------------------------------------------------------------------------
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// Module specific Functions Declaration
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//----------------------------------------------------------------------------------
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#if defined(PLATFORM_ANDROID)
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static int android_read(void *cookie, char *buf, int size);
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static int android_write(void *cookie, const char *buf, int size);
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static fpos_t android_seek(void *cookie, fpos_t offset, int whence);
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static int android_close(void *cookie);
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#endif
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//----------------------------------------------------------------------------------
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// Module Functions Definition - Utilities
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//----------------------------------------------------------------------------------
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// Data decompression function
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// NOTE: Allocated data MUST be freed!
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unsigned char *DecompressData(const unsigned char *data, unsigned long compSize, int uncompSize)
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{
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int tempUncompSize;
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unsigned char *pUncomp;
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// Allocate buffer to hold decompressed data
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pUncomp = (mz_uint8 *)malloc((size_t)uncompSize);
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// Check correct memory allocation
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if (!pUncomp)
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{
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TraceLog(WARNING, "Out of memory while decompressing data");
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}
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else
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{
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// Decompress data
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tempUncompSize = tinfl_decompress_mem_to_mem(pUncomp, (size_t)uncompSize, data, compSize, 1);
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if (tempUncompSize == -1)
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{
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TraceLog(WARNING, "Data decompression failed");
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free(pUncomp);
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}
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if (uncompSize != (int)tempUncompSize)
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{
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TraceLog(WARNING, "Expected uncompressed size do not match, data may be corrupted");
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TraceLog(WARNING, " -- Expected uncompressed size: %i", uncompSize);
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TraceLog(WARNING, " -- Returned uncompressed size: %i", tempUncompSize);
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}
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TraceLog(INFO, "Data decompressed successfully from %u bytes to %u bytes", (mz_uint32)compSize, (mz_uint32)tempUncompSize);
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}
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return pUncomp;
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}
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#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
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// Creates a bitmap (BMP) file from an array of pixel data
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// NOTE: This function is not explicitly available to raylib users
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void WriteBitmap(const char *fileName, unsigned char *imgData, int width, int height)
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{
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int filesize = 54 + 3*width*height;
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unsigned char bmpFileHeader[14] = {'B','M', 0,0,0,0, 0,0, 0,0, 54,0,0,0}; // Standard BMP file header
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unsigned char bmpInfoHeader[40] = {40,0,0,0, 0,0,0,0, 0,0,0,0, 1,0, 24,0}; // Standard BMP info header
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bmpFileHeader[2] = (unsigned char)(filesize);
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bmpFileHeader[3] = (unsigned char)(filesize>>8);
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bmpFileHeader[4] = (unsigned char)(filesize>>16);
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bmpFileHeader[5] = (unsigned char)(filesize>>24);
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bmpInfoHeader[4] = (unsigned char)(width);
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bmpInfoHeader[5] = (unsigned char)(width>>8);
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bmpInfoHeader[6] = (unsigned char)(width>>16);
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bmpInfoHeader[7] = (unsigned char)(width>>24);
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bmpInfoHeader[8] = (unsigned char)(height);
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bmpInfoHeader[9] = (unsigned char)(height>>8);
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bmpInfoHeader[10] = (unsigned char)(height>>16);
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bmpInfoHeader[11] = (unsigned char)(height>>24);
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FILE *bmpFile = fopen(fileName, "wb"); // Define a pointer to bitmap file and open it in write-binary mode
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// NOTE: fwrite parameters are: data pointer, size in bytes of each element to be written, number of elements, file-to-write pointer
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fwrite(bmpFileHeader, sizeof(unsigned char), 14, bmpFile); // Write BMP file header data
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fwrite(bmpInfoHeader, sizeof(unsigned char), 40, bmpFile); // Write BMP info header data
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// Write pixel data to file
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for (int y = 0; y < height ; y++)
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{
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for (int x = 0; x < width; x++)
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{
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fputc(imgData[(x*4)+2 + (y*width*4)], bmpFile);
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fputc(imgData[(x*4)+1 + (y*width*4)], bmpFile);
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fputc(imgData[(x*4) + (y*width*4)], bmpFile);
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}
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}
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fclose(bmpFile); // Close bitmap file
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}
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// Creates a PNG image file from an array of pixel data
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// NOTE: Uses stb_image_write
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void WritePNG(const char *fileName, unsigned char *imgData, int width, int height)
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{
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stbi_write_png(fileName, width, height, 4, imgData, width*4); // It WORKS!!!
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}
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// Outputs a trace log message (INFO, ERROR, WARNING)
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// NOTE: If a file has been init, output log is written there
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void TraceLog(int msgType, const char *text, ...)
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{
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va_list args;
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int traceDebugMsgs = 1;
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#ifdef DO_NOT_TRACE_DEBUG_MSGS
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traceDebugMsgs = 0;
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#endif
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switch(msgType)
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{
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case INFO: fprintf(stdout, "INFO: "); break;
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case ERROR: fprintf(stdout, "ERROR: "); break;
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case WARNING: fprintf(stdout, "WARNING: "); break;
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case DEBUG: if (traceDebugMsgs) fprintf(stdout, "DEBUG: "); break;
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default: break;
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}
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if ((msgType != DEBUG) || ((msgType == DEBUG) && (traceDebugMsgs)))
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{
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va_start(args, text);
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vfprintf(stdout, text, args);
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va_end(args);
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fprintf(stdout, "\n");
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}
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if (msgType == ERROR) exit(1); // If ERROR message, exit program
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}
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#endif
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#if defined(PLATFORM_ANDROID)
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void TraceLog(int msgType, const char *text, ...)
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{
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static char buffer[100];
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switch(msgType)
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{
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case INFO: strcpy(buffer, "INFO: "); break;
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case ERROR: strcpy(buffer, "ERROR: "); break;
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case WARNING: strcpy(buffer, "WARNING: "); break;
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case DEBUG: strcpy(buffer, "DEBUG: "); break;
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default: break;
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}
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strcat(buffer, text);
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strcat(buffer, "\n");
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va_list args;
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va_start(args, buffer);
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switch(msgType)
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{
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case INFO: __android_log_vprint(ANDROID_LOG_INFO, "raylib", buffer, args); break;
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case ERROR: __android_log_vprint(ANDROID_LOG_ERROR, "raylib", buffer, args); break;
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case WARNING: __android_log_vprint(ANDROID_LOG_WARN, "raylib", buffer, args); break;
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case DEBUG: __android_log_vprint(ANDROID_LOG_DEBUG, "raylib", buffer, args); break;
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default: break;
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}
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va_end(args);
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if (msgType == ERROR) exit(1);
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}
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// Initialize asset manager from android app
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void InitAssetManager(AAssetManager *manager)
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{
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assetManager = manager;
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}
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// Replacement for fopen
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FILE *android_fopen(const char *fileName, const char *mode)
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{
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if (mode[0] == 'w') return NULL;
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AAsset *asset = AAssetManager_open(assetManager, fileName, 0);
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if(!asset) return NULL;
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return funopen(asset, android_read, android_write, android_seek, android_close);
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}
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#endif
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// Keep track of memory allocated
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// NOTE: mallocType defines the type of data allocated
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/*
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void RecordMalloc(int mallocType, int mallocSize, const char *msg)
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{
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// TODO: Investigate how to record memory allocation data...
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// Maybe creating my own malloc function...
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}
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*/
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// Get the extension for a filename
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const char *GetExtension(const char *fileName)
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{
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const char *dot = strrchr(fileName, '.');
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if(!dot || dot == fileName) return "";
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return (dot + 1);
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}
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//----------------------------------------------------------------------------------
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// Module specific Functions Definition
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//----------------------------------------------------------------------------------
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#if defined(PLATFORM_ANDROID)
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static int android_read(void *cookie, char *buf, int size)
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{
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return AAsset_read((AAsset *)cookie, buf, size);
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}
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static int android_write(void *cookie, const char *buf, int size)
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{
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TraceLog(ERROR, "Can't provide write access to the APK");
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return EACCES;
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}
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static fpos_t android_seek(void *cookie, fpos_t offset, int whence)
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{
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return AAsset_seek((AAsset *)cookie, offset, whence);
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}
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static int android_close(void *cookie)
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{
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AAsset_close((AAsset *)cookie);
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return 0;
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}
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#endif
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