skia/images/bmpdecoderhelper.h - Issue 113827: Remove the remainder of the skia source code from the Chromium repo....

Side by Side Diff: skia/images/bmpdecoderhelper.h

Issue 113827: Remove the remainder of the skia source code from the Chromium repo.... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/

Patch Set: Created 11 years, 6 months ago

Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.

Jump to:

View unified diff | Download patch | Annotate | Revision Log

OLD	NEW
	(Empty)
1 /*

2 * Copyright 2007, The Android Open Source Project

3 *

4 * Licensed under the Apache License, Version 2.0 (the "License");

5 * you may not use this file except in compliance with the License.

6 * You may obtain a copy of the License at

7 *

8 * http://www.apache.org/licenses/LICENSE-2.0

9 *

10 * Unless required by applicable law or agreed to in writing, software

11 * distributed under the License is distributed on an "AS IS" BASIS,

12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

13 * See the License for the specific language governing permissions and

14 * limitations under the License.

15 */

16

17 #ifndef IMAGE_CODEC_BMPDECODERHELPER_H__

18 #define IMAGE_CODEC_BMPDECODERHELPER_H__

19

20 ///////////////////////////////////////////////////////////////////////////////

21 // this section is my current "glue" between google3 code and android.

22 // will be fixed soon

23

24 #include "SkTypes.h"

25 #include <limits.h>

26 #define DISALLOW_EVIL_CONSTRUCTORS(name)

27 #define CHECK(predicate) SkASSERT(predicate)

28 typedef uint8_t uint8;

29 typedef uint32_t uint32;

30

31 template <typename T> class scoped_array {

32 private:

33 T* ptr_;

34 scoped_array(scoped_array const&);

35 scoped_array& operator=(const scoped_array&);

36

37 public:

38 explicit scoped_array(T* p = 0) : ptr_(p) {}

39 ~scoped_array() {

40 delete[] ptr_;

41 }

42

43 void reset(T* p = 0) {

44 if (p != ptr_) {

45 delete[] ptr_;

46 ptr_ = p;

47 }

48 }

49

50 T& operator[](int i) const {

51 return ptr_[i];

52 }

53 };

54

55 ///////////////////////////////////////////////////////////////////////////////

56

57 namespace image_codec {

58

59 class BmpDecoderCallback {

60 public:

61 BmpDecoderCallback() { }

62 virtual ~BmpDecoderCallback() {}

63

64 /**

65 * This is called once for an image. It is passed the width and height and

66 * should return the address of a buffer that is large enough to store

67 * all of the resulting pixels (widht * height * 3 bytes). If it returns NULL,

68 * then the decoder will abort, but return true, as the caller has received

69 * valid dimensions.

70 */

71 virtual uint8* SetSize(int width, int height) = 0;

72

73 private:

74 DISALLOW_EVIL_CONSTRUCTORS(BmpDecoderCallback);

75 };

76

77 class BmpDecoderHelper {

78 public:

79 BmpDecoderHelper() { }

80 ~BmpDecoderHelper() { }

81 bool DecodeImage(const char* data,

82 int len,

83 int max_pixels,

84 BmpDecoderCallback* callback);

85

86 private:

87 DISALLOW_EVIL_CONSTRUCTORS(BmpDecoderHelper);

88

89 void DoRLEDecode();

90 void DoStandardDecode();

91 void PutPixel(int x, int y, uint8 col);

92

93 int GetInt();

94 int GetShort();

95 uint8 GetByte();

96 int CalcShiftRight(uint32 mask);

97 int CalcShiftLeft(uint32 mask);

98

99 const uint8* data_;

100 int pos_;

101 int len_;

102 int width_;

103 int height_;

104 int bpp_;

105 int pixelPad_;

106 int rowPad_;

107 scoped_array<uint8> colTab_;

108 uint32 redBits_;

109 uint32 greenBits_;

110 uint32 blueBits_;

111 int redShiftRight_;

112 int greenShiftRight_;

113 int blueShiftRight_;

114 int redShiftLeft_;

115 int greenShiftLeft_;

116 int blueShiftLeft_;

117 uint8* output_;

118 bool inverted_;

119 };

120

121 } // namespace

122

123 #endif

OLD	NEW

« no previous file with comments | « skia/images/SkStream.cpp ('k') | skia/images/bmpdecoderhelper.cpp » ('j') | no next file with comments »