1 #ifndef __DALI_TIZEN_PLATFORM_LOADER_JPEG_H__
2 #define __DALI_TIZEN_PLATFORM_LOADER_JPEG_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/common/vector-wrapper.h>
23 #include <dali/public-api/images/pixel.h>
24 #include "image-encoder.h"
25 #include "image-loader-input.h"
35 struct ImageAttributes;
37 namespace TizenPlatform
40 class ResourceLoadingClient;
44 const unsigned char MAGIC_BYTE_1 = 0xFF;
45 const unsigned char MAGIC_BYTE_2 = 0xD8;
49 * Loads the bitmap from an JPEG file. This function checks the header first
50 * and if it is not a JPEG file, then it returns straight away.
51 * @param[in] fp Pointer to the Image file
52 * @param[in] bitmap The bitmap class where the decoded image will be stored
53 * @param[in] attributes Describes the dimensions, pixel format and other details for loading the image data
54 * @return true if file decoded successfully, false otherwise
56 bool LoadBitmapFromJpeg( const ResourceLoadingClient& client, const ImageLoader::Input& input, Integration::Bitmap& bitmap );
59 * Loads the header of a JPEG file and fills in the width and height appropriately.
60 * If the width and height are set on entry, it will set the width and height
61 * to the closest scaled size (exactly as will be loaded by LoadBitmapFromJpeg with the same
63 * @param[in] fp Pointer to the Image file
64 * @param[in] attributes Describes the dimensions, pixel format and other details for loading the image data
65 * @param[in/out] width Is set with the width of the image
66 * @param[in/out] height Is set with the height of the image
67 * @return true if the file's header was read successully, false otherwise
69 bool LoadJpegHeader( const ImageLoader::Input& input, unsigned int& width, unsigned int& height );
72 * Encode raw pixel data to JPEG format.
73 * @param[in] pixelBuffer Pointer to raw pixel data to be encoded
74 * @param[out] encodedPixels Encoded pixel data. Existing contents will be overwritten
75 * @param[in] width Image width
76 * @param[in] height Image height
77 * @param[in] pixelFormat Input pixel format (must be Pixel::RGB888)
78 * @param[in] quality JPEG quality on usual 1 to 100 scale.
80 bool EncodeToJpeg(const unsigned char* pixelBuffer, std::vector< unsigned char >& encodedPixels, std::size_t width, std::size_t height, Pixel::Format pixelFormat, unsigned quality = 80);
82 } // namespace TizenPlatform
86 #endif // __DALI_TIZEN_PLATFORM_LOADER_JPEG_H__