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Side by Side Diff: third_party/WebKit/Source/platform/image-encoders/PNGImageEncoder.cpp

Issue 1950253002: Remove Source/platform/image-encoders/skia (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Fix compile: adjust platform and core file #includes. Created 4 years, 7 months ago
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1 /* 1 /*
2 * Copyright (c) 2010, Google Inc. All rights reserved. 2 * Copyright (c) 2010, Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are 5 * modification, are permitted provided that the following conditions are
6 * met: 6 * met:
7 * 7 *
8 * * Redistributions of source code must retain the above copyright 8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above 10 * * Redistributions in binary form must reproduce the above
(...skipping 10 matching lines...) Expand all
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */ 29 */
30 30
31 #include "platform/image-encoders/skia/PNGImageEncoder.h" 31 #include "platform/image-encoders/PNGImageEncoder.h"
32 32
33 #include "platform/graphics/ImageBuffer.h" 33 #include "platform/graphics/ImageBuffer.h"
34 #include "wtf/OwnPtr.h" 34 #include "wtf/OwnPtr.h"
35 35
36 namespace blink { 36 namespace blink {
37 37
38 PNGImageEncoderState::~PNGImageEncoderState() 38 PNGImageEncoderState::~PNGImageEncoderState()
39 { 39 {
40 png_destroy_write_struct(&m_png, &m_info); 40 png_destroy_write_struct(&m_png, &m_info);
41 } 41 }
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63 // - the delta filter is 1 ("sub") instead of 5 ("all"), to reduce the filte r computations. 63 // - the delta filter is 1 ("sub") instead of 5 ("all"), to reduce the filte r computations.
64 // The zlib memory level (8) and strategy (Z_FILTERED) will be set inside li bpng. 64 // The zlib memory level (8) and strategy (Z_FILTERED) will be set inside li bpng.
65 // 65 //
66 // Avoid the zlib strategies Z_HUFFMAN_ONLY or Z_RLE. 66 // Avoid the zlib strategies Z_HUFFMAN_ONLY or Z_RLE.
67 // Although they are the fastest for poorly-compressible images (e.g. photog raphs), 67 // Although they are the fastest for poorly-compressible images (e.g. photog raphs),
68 // they are very slow for highly-compressible images (e.g. text, drawings or business graphics) 68 // they are very slow for highly-compressible images (e.g. text, drawings or business graphics)
69 png_set_compression_level(png, 3); 69 png_set_compression_level(png, 3);
70 png_set_filter(png, PNG_FILTER_TYPE_BASE, PNG_FILTER_SUB); 70 png_set_filter(png, PNG_FILTER_TYPE_BASE, PNG_FILTER_SUB);
71 71
72 png_set_write_fn(png, output, writeOutput, 0); 72 png_set_write_fn(png, output, writeOutput, 0);
73 png_set_IHDR(png, info, imageSize.width(), imageSize.height(), 73 png_set_IHDR(png, info, imageSize.width(), imageSize.height(), 8, PNG_COLOR_ TYPE_RGB_ALPHA, 0, 0, 0);
74 8, PNG_COLOR_TYPE_RGB_ALPHA, 0, 0, 0);
75 png_write_info(png, info); 74 png_write_info(png, info);
76 75
77 return adoptPtr(new PNGImageEncoderState(png, info)); 76 return adoptPtr(new PNGImageEncoderState(png, info));
78 } 77 }
79 78
80 void PNGImageEncoder::writeOneRowToPng(unsigned char* pixels, PNGImageEncoderSta te* encoderState) 79 void PNGImageEncoder::writeOneRowToPng(unsigned char* pixels, PNGImageEncoderSta te* encoderState)
81 { 80 {
82 png_write_row(encoderState->png(), pixels); 81 png_write_row(encoderState->png(), pixels);
83 } 82 }
84 83
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106 105
107 bool PNGImageEncoder::encode(const ImageDataBuffer& imageData, Vector<unsigned c har>* output) 106 bool PNGImageEncoder::encode(const ImageDataBuffer& imageData, Vector<unsigned c har>* output)
108 { 107 {
109 if (!imageData.pixels()) 108 if (!imageData.pixels())
110 return false; 109 return false;
111 110
112 return encodePixels(imageData.size(), imageData.pixels(), output); 111 return encodePixels(imageData.size(), imageData.pixels(), output);
113 } 112 }
114 113
115 } // namespace blink 114 } // namespace blink
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