| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright (c) 2010, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 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. | |
| 29 */ | |
| 30 | |
| 31 #ifndef JPEGImageEncoder_h | |
| 32 #define JPEGImageEncoder_h | |
| 33 | |
| 34 #include <memory> | |
| 35 #include "platform/geometry/IntSize.h" | |
| 36 #include "platform/wtf/Allocator.h" | |
| 37 #include "platform/wtf/Vector.h" | |
| 38 | |
| 39 namespace blink { | |
| 40 | |
| 41 struct ImageDataBuffer; | |
| 42 | |
| 43 class PLATFORM_EXPORT JPEGImageEncoderState { | |
| 44 USING_FAST_MALLOC(JPEGImageEncoderState); | |
| 45 WTF_MAKE_NONCOPYABLE(JPEGImageEncoderState); | |
| 46 | |
| 47 public: | |
| 48 static std::unique_ptr<JPEGImageEncoderState> Create( | |
| 49 const IntSize& image_size, | |
| 50 const double& quality, | |
| 51 Vector<unsigned char>* output); | |
| 52 JPEGImageEncoderState() {} | |
| 53 virtual ~JPEGImageEncoderState() {} | |
| 54 }; | |
| 55 | |
| 56 class PLATFORM_EXPORT JPEGImageEncoder { | |
| 57 STATIC_ONLY(JPEGImageEncoder); | |
| 58 | |
| 59 public: | |
| 60 enum { kProgressiveEncodeFailed = -1 }; | |
| 61 | |
| 62 // Encode the image data with a compression quality in [0-100]. | |
| 63 // Warning: Calling this method off the main thread may result in data race | |
| 64 // problems; instead, call JPEGImageEncoderState::create on main thread | |
| 65 // first followed by encodeWithPreInitializedState off the main thread will | |
| 66 // be safer. | |
| 67 static bool Encode(const ImageDataBuffer&, | |
| 68 const double& quality, | |
| 69 Vector<unsigned char>*); | |
| 70 | |
| 71 static bool EncodeWithPreInitializedState( | |
| 72 std::unique_ptr<JPEGImageEncoderState>, | |
| 73 const unsigned char*, | |
| 74 int num_rows_completed = 0); | |
| 75 static int ProgressiveEncodeRowsJpegHelper(JPEGImageEncoderState*, | |
| 76 unsigned char*, | |
| 77 int, | |
| 78 const double, | |
| 79 double); | |
| 80 static int ComputeCompressionQuality(const double& quality); | |
| 81 | |
| 82 private: | |
| 83 // For callers: provide a reasonable compression quality default. | |
| 84 enum Quality { kDefaultCompressionQuality = 92 }; | |
| 85 }; | |
| 86 | |
| 87 } // namespace blink | |
| 88 | |
| 89 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2878333004:
Use SkJpegEncoder in WebKit platform (Closed)
