1 // Copyright 2016 Google Inc. All Rights Reserved. 2 // 3 // Use of this source code is governed by a BSD-style license 4 // that can be found in the COPYING file in the root of the source 5 // tree. An additional intellectual property rights grant can be found 6 // in the file PATENTS. All contributing project authors may 7 // be found in the AUTHORS file in the root of the source tree. 8 // ----------------------------------------------------------------------------- 9 // 10 // All-in-one library to decode PNG/JPEG/WebP/TIFF/WIC input images. 11 // 12 // Author: Skal ([email protected]) 13 14 #ifndef WEBP_IMAGEIO_IMAGE_DEC_H_ 15 #define WEBP_IMAGEIO_IMAGE_DEC_H_ 16 17 #include "webp/types.h" 18 19 #ifdef HAVE_CONFIG_H 20 #include "webp/config.h" 21 #endif 22 23 #include "./metadata.h" 24 #include "./jpegdec.h" 25 #include "./pngdec.h" 26 #include "./pnmdec.h" 27 #include "./tiffdec.h" 28 #include "./webpdec.h" 29 #include "./wicdec.h" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 typedef enum { 36 WEBP_PNG_FORMAT = 0, 37 WEBP_JPEG_FORMAT, 38 WEBP_TIFF_FORMAT, 39 WEBP_WEBP_FORMAT, 40 WEBP_PNM_FORMAT, 41 WEBP_UNSUPPORTED_FORMAT 42 } WebPInputFileFormat; 43 44 // Returns a comma separated list of enabled input formats. 45 const char* WebPGetEnabledInputFileFormats(void); 46 47 // Try to infer the image format. 'data_size' should be larger than 12. 48 // Returns WEBP_UNSUPPORTED_FORMAT if format can't be guess safely. 49 WebPInputFileFormat WebPGuessImageType(const uint8_t* const data, 50 size_t data_size); 51 52 // Signature for common image-reading functions (ReadPNG, ReadJPEG, ...) 53 typedef int (*WebPImageReader)(const uint8_t* const data, size_t data_size, 54 struct WebPPicture* const pic, 55 int keep_alpha, struct Metadata* const metadata); 56 57 // Return the reader associated to a given file format. 58 WebPImageReader WebPGetImageReader(WebPInputFileFormat format); 59 60 // This function is similar to WebPGuessImageType(), but returns a 61 // suitable reader function. The returned reader is never NULL, but 62 // unknown formats will return an always-failing valid reader. 63 WebPImageReader WebPGuessImageReader(const uint8_t* const data, 64 size_t data_size); 65 66 #ifdef __cplusplus 67 } // extern "C" 68 #endif 69 70 #endif // WEBP_IMAGEIO_IMAGE_DEC_H_ 71