mirror of https://github.com/opencv/opencv.git
This code is based on https://github.com/prasannatsm/opencv code.
- added webp (lossy and lossless without alpha channel) - added testspull/610/head
AoD314
12 years ago
parent
fd44322b4f
commit
63d9ee9523
9 changed files with 429 additions and 2 deletions
@ -0,0 +1,33 @@ |
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#============================================================================= |
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# Find WebP library |
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#============================================================================= |
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# Find the native WebP headers and libraries. |
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# |
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# WEBP_INCLUDE_DIRS - where to find webp/decode.h, etc. |
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# WEBP_LIBRARIES - List of libraries when using webp. |
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# WEBP_FOUND - True if webp is found. |
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#============================================================================= |
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# Look for the header file. |
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unset(WEBP_FOUND) |
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FIND_PATH(WEBP_INCLUDE_DIR NAMES webp/decode.h) |
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if(NOT WEBP_INCLUDE_DIR) |
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unset(WEBP_FOUND) |
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else() |
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MARK_AS_ADVANCED(WEBP_INCLUDE_DIR) |
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# Look for the library. |
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FIND_LIBRARY(WEBP_LIBRARY NAMES webp) |
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MARK_AS_ADVANCED(WEBP_LIBRARY) |
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# handle the QUIETLY and REQUIRED arguments and set WEBFOUND_FOUND to TRUE if |
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# all listed variables are TRUE |
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INCLUDE(${CMAKE_ROOT}/Modules/FindPackageHandleStandardArgs.cmake) |
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(WebP DEFAULT_MSG WEBP_LIBRARY WEBP_INCLUDE_DIR) |
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SET(WEBP_LIBRARIES ${WEBP_LIBRARY}) |
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SET(WEBP_INCLUDE_DIRS ${WEBP_INCLUDE_DIR}) |
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endif() |
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@ -0,0 +1,253 @@ |
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
|
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// By downloading, copying, installing or using the software you agree to this license.
|
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// If you do not agree to this license, do not download, install,
|
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// copy or use the software.
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//
|
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//
|
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// License Agreement
|
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// For Open Source Computer Vision Library
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//
|
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
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// Third party copyrights are property of their respective owners.
|
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//
|
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// Redistribution and use in source and binary forms, with or without modification,
|
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// are permitted provided that the following conditions are met:
|
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//
|
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// * Redistribution's of source code must retain the above copyright notice,
|
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// this list of conditions and the following disclaimer.
|
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//
|
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// * Redistribution's in binary form must reproduce the above copyright notice,
|
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// this list of conditions and the following disclaimer in the documentation
|
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// and/or other materials provided with the distribution.
|
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//
|
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// * The name of the copyright holders may not be used to endorse or promote products
|
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// derived from this software without specific prior written permission.
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//
|
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// This software is provided by the copyright holders and contributors "as is" and
|
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
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// In no event shall the Intel Corporation or contributors be liable for any direct,
|
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
|
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// loss of use, data, or profits; or business interruption) however caused
|
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifdef HAVE_WEBP |
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#include "precomp.hpp" |
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#include <webp/decode.h> |
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#include <webp/encode.h> |
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#include <stdio.h> |
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#include <limits.h> |
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#include "grfmt_webp.hpp" |
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#include "opencv2/imgproc/imgproc.hpp" |
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namespace cv |
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{ |
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WebPDecoder::WebPDecoder() |
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{ |
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m_signature = "RIFF....WEBPVP8 "; |
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m_buf_supported = true; |
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} |
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WebPDecoder::~WebPDecoder() |
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{ |
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} |
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ImageDecoder WebPDecoder::newDecoder() const |
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{ |
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return new WebPDecoder; |
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} |
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bool WebPDecoder::checkSignature( const std::string& signature ) const |
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{ |
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size_t len = signatureLength(); |
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bool ret = false; |
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if(signature.size() >= len) |
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{ |
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ret = ( (memcmp(signature.c_str(), m_signature.c_str(), 4) == 0) && |
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(memcmp(signature.c_str() + 8, m_signature.c_str() + 8, 4) == 0) ); |
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} |
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return ret; |
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} |
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bool WebPDecoder::readHeader() |
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{ |
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if (m_buf.empty()) |
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{ |
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FILE * wfile = NULL; |
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wfile = fopen(m_filename.c_str(), "rb"); |
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if(wfile == NULL) |
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{ |
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return false; |
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} |
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fseek(wfile, 0, SEEK_END); |
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size_t wfile_size = ftell(wfile); |
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fseek(wfile, 0, SEEK_SET); |
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if(wfile_size > (size_t)INT_MAX) |
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{ |
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fclose(wfile); |
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return false; |
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} |
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data.create(1, (int)wfile_size, CV_8U); |
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size_t data_size = fread(data.data, 1, wfile_size, wfile); |
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if(wfile) |
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{ |
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fclose(wfile); |
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} |
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if( data_size < wfile_size ) |
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{ |
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return false; |
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} |
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} |
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else |
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{ |
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data = m_buf; |
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} |
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if(WebPGetInfo(data.data, data.total(), &m_width, &m_height) == 1) |
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{ |
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m_type = CV_8UC3; |
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return true; |
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} |
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return false; |
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} |
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bool WebPDecoder::readData(Mat &img) |
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{ |
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if( m_width > 0 && m_height > 0 ) |
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{ |
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uchar* out_data = img.data; |
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unsigned int out_data_size = m_width * m_height * 3 * sizeof(uchar); |
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uchar *res_ptr = WebPDecodeBGRInto(data.data, data.total(), out_data, out_data_size, m_width * 3); |
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if(res_ptr == out_data) |
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{ |
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return true; |
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} |
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} |
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return false; |
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} |
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WebPEncoder::WebPEncoder() |
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{ |
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m_description = "WebP files (*.webp)"; |
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m_buf_supported = true; |
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} |
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WebPEncoder::~WebPEncoder() |
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{ |
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} |
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ImageEncoder WebPEncoder::newEncoder() const |
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{ |
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return new WebPEncoder(); |
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} |
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bool WebPEncoder::write(const Mat& img, const std::vector<int>& params) |
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{ |
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int channels = img.channels(), depth = img.depth(); |
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int width = img.cols, height = img.rows; |
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const Mat *image = &img; |
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Mat temp; |
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int size = 0; |
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bool comp_lossless = true; |
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int quality = 100; |
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if (params.size() > 1) |
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{ |
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if (params[0] == CV_IMWRITE_WEBP_QUALITY) |
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{ |
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comp_lossless = false; |
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quality = params[1]; |
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if (quality < 1) |
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{ |
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quality = 1; |
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} |
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if (quality > 100) |
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{ |
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comp_lossless = true; |
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} |
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} |
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} |
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uint8_t *out = NULL; |
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if(depth != CV_8U) |
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{ |
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return false; |
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} |
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if(channels == 1) |
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{ |
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cvtColor(*image, temp, CV_GRAY2BGR); |
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image = &temp; |
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channels = 3; |
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} |
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if (comp_lossless) |
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{ |
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size = WebPEncodeLosslessBGR(image->data, width, height, ((width * 3 + 3) & ~3), &out); |
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} |
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else |
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{ |
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size = WebPEncodeBGR(image->data, width, height, ((width * 3 + 3) & ~3), (float)quality, &out); |
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} |
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if(size > 0) |
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{ |
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if(m_buf) |
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{ |
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m_buf->resize(size); |
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memcpy(&(*m_buf)[0], out, size); |
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} |
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else |
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{ |
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FILE *fd = fopen(m_filename.c_str(), "wb"); |
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if(fd != NULL) |
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{ |
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fwrite(out, size, sizeof(uint8_t), fd); |
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fclose(fd); fd = NULL; |
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} |
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} |
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} |
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if (out != NULL) |
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{ |
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free(out); |
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out = NULL; |
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} |
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return size > 0; |
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} |
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} |
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#endif |
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@ -0,0 +1,86 @@ |
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
|
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// If you do not agree to this license, do not download, install,
|
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// copy or use the software.
|
||||
//
|
||||
//
|
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
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// Third party copyrights are property of their respective owners.
|
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//
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// Redistribution and use in source and binary forms, with or without modification,
|
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// are permitted provided that the following conditions are met:
|
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//
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// * Redistribution's of source code must retain the above copyright notice,
|
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// this list of conditions and the following disclaimer.
|
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
|
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// this list of conditions and the following disclaimer in the documentation
|
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// and/or other materials provided with the distribution.
|
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//
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// * The name of the copyright holders may not be used to endorse or promote products
|
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
|
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// any express or implied warranties, including, but not limited to, the implied
|
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
|
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// and on any theory of liability, whether in contract, strict liability,
|
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef _GRFMT_WEBP_H_ |
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#define _GRFMT_WEBP_H_ |
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#include "grfmt_base.hpp" |
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#ifdef HAVE_WEBP |
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namespace cv |
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{ |
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class WebPDecoder : public BaseImageDecoder |
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{ |
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public: |
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WebPDecoder(); |
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~WebPDecoder(); |
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bool readData( Mat& img ); |
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bool readHeader(); |
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void close(); |
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bool checkSignature( const std::string& signature ) const; |
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ImageDecoder newDecoder() const; |
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protected: |
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Mat data; |
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}; |
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class WebPEncoder : public BaseImageEncoder |
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{ |
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public: |
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WebPEncoder(); |
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~WebPEncoder(); |
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bool write(const Mat& img, const std::vector<int>& params); |
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ImageEncoder newEncoder() const; |
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}; |
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} |
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#endif |
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#endif /* _GRFMT_WEBP_H_ */ |
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