// Copyright 2012 Google Inc. All Rights Reserved. // // Use of this source code is governed by a BSD-style license // that can be found in the COPYING file in the root of the source // tree. An additional intellectual property rights grant can be found // in the file PATENTS. All contributing project authors may // be found in the AUTHORS file in the root of the source tree. // ----------------------------------------------------------------------------- // // Utility functions used by the example programs. // #ifndef WEBP_EXAMPLES_EXAMPLE_UTIL_H_ #define WEBP_EXAMPLES_EXAMPLE_UTIL_H_ #include "webp/types.h" #include "webp/mux_types.h" #ifdef __cplusplus extern "C" { #endif //------------------------------------------------------------------------------ // String parsing // Parses 'v' using strto(ul|l|d)(). If error is non-NULL, '*error' is set to // true on failure while on success it is left unmodified to allow chaining of // calls. An error is only printed on the first occurrence. uint32_t ExUtilGetUInt(const char* const v, int base, int* const error); int ExUtilGetInt(const char* const v, int base, int* const error); float ExUtilGetFloat(const char* const v, int* const error); // This variant of ExUtilGetInt() will parse multiple integers from a // comma-separated list. Up to 'max_output' integers are parsed. // The result is placed in the output[] array, and the number of integers // actually parsed is returned, or -1 if an error occurred. int ExUtilGetInts(const char* v, int base, int max_output, int output[]); // Reads a file named 'filename' into a WebPData structure. The content of // webp_data is overwritten. Returns false in case of error. int ExUtilReadFileToWebPData(const char* const filename, WebPData* const webp_data); //------------------------------------------------------------------------------ // Command-line arguments CommandLineArguments; // Initializes the structure from the command-line parameters. If there is // only one parameter and it does not start with a '-', then it is assumed to // be a file name. This file will be read and tokenized into command-line // arguments. The content of 'args' is overwritten. // Returns false in case of error (memory allocation failure, non // existing file, too many arguments, ...). int ExUtilInitCommandLineArguments(int argc, const char* argv[], CommandLineArguments* const args); // Deallocate all memory and reset 'args'. void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args); #ifdef __cplusplus } // extern "C" #endif #endif // WEBP_EXAMPLES_EXAMPLE_UTIL_H_