cc/resources/resource_format.cc - Issue 2121043002: 16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

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Issue 2121043002: 16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support. Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: 8 bpp support added. R200 camera supported. Created 4 years, 5 months ago

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1 // Copyright 2013 The Chromium Authors. All rights reserved.	1 // Copyright 2013 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be	2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.	3 // found in the LICENSE file.

4	4

5 #include "cc/resources/resource_format.h"	5 #include "cc/resources/resource_format.h"

6	6

7 #include "third_party/khronos/GLES2/gl2.h"	7 #include "third_party/khronos/GLES2/gl2.h"

8 #include "third_party/khronos/GLES2/gl2ext.h"	8 #include "third_party/khronos/GLES2/gl2ext.h"

9	9

10 namespace cc {	10 namespace cc {

11	11

12 int BitsPerPixel(ResourceFormat format) {	12 int BitsPerPixel(ResourceFormat format) {

13 switch (format) {	13 switch (format) {

14 case BGRA_8888:	14 case BGRA_8888:

15 case RGBA_8888:	15 case RGBA_8888:

16 return 32;	16 return 32;

17 case RGBA_4444:	17 case RGBA_4444:

18 case RGB_565:	18 case RGB_565:

	19 case RG_88:

19 case LUMINANCE_F16:	20 case LUMINANCE_F16:

20 return 16;	21 return 16;

21 case ALPHA_8:	22 case ALPHA_8:

22 case LUMINANCE_8:	23 case LUMINANCE_8:

23 case RED_8:	24 case RED_8:

24 return 8;	25 return 8;

25 case ETC1:	26 case ETC1:

26 return 4;	27 return 4;

27 }	28 }

28 NOTREACHED();	29 NOTREACHED();

29 return 0;	30 return 0;

30 }	31 }

31	32

32 GLenum GLDataType(ResourceFormat format) {	33 GLenum GLDataType(ResourceFormat format) {

33 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	34 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

34 static const GLenum format_gl_data_type[] = {	35 static const GLenum format_gl_data_type[] = {

35 GL_UNSIGNED_BYTE, // RGBA_8888	36 GL_UNSIGNED_BYTE, // RGBA_8888

36 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444	37 GL_UNSIGNED_SHORT_4_4_4_4, // RGBA_4444

37 GL_UNSIGNED_BYTE, // BGRA_8888	38 GL_UNSIGNED_BYTE, // BGRA_8888

38 GL_UNSIGNED_BYTE, // ALPHA_8	39 GL_UNSIGNED_BYTE, // ALPHA_8

39 GL_UNSIGNED_BYTE, // LUMINANCE_8	40 GL_UNSIGNED_BYTE, // LUMINANCE_8

40 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,	41 GL_UNSIGNED_SHORT_5_6_5, // RGB_565,

41 GL_UNSIGNED_BYTE, // ETC1	42 GL_UNSIGNED_BYTE, // ETC1

42 GL_UNSIGNED_BYTE, // RED_8	43 GL_UNSIGNED_BYTE, // RED_8

43 GL_HALF_FLOAT_OES, // LUMINANCE_F16	44 GL_HALF_FLOAT_OES, // LUMINANCE_F16

	45 GL_UNSIGNED_BYTE, // RG_88

44 };	46 };

45 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),	47 static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),

46 "format_gl_data_type does not handle all cases.");	48 "format_gl_data_type does not handle all cases.");

47	49

48 return format_gl_data_type[format];	50 return format_gl_data_type[format];

49 }	51 }

50	52

51 GLenum GLDataFormat(ResourceFormat format) {	53 GLenum GLDataFormat(ResourceFormat format) {

52 DCHECK_LE(format, RESOURCE_FORMAT_MAX);	54 DCHECK_LE(format, RESOURCE_FORMAT_MAX);

53 static const GLenum format_gl_data_format[] = {	55 static const GLenum format_gl_data_format[] = {

54 GL_RGBA, // RGBA_8888	56 GL_RGBA, // RGBA_8888

55 GL_RGBA, // RGBA_4444	57 GL_RGBA, // RGBA_4444

56 GL_BGRA_EXT, // BGRA_8888	58 GL_BGRA_EXT, // BGRA_8888

57 GL_ALPHA, // ALPHA_8	59 GL_ALPHA, // ALPHA_8

58 GL_LUMINANCE, // LUMINANCE_8	60 GL_LUMINANCE, // LUMINANCE_8

59 GL_RGB, // RGB_565	61 GL_RGB, // RGB_565

60 GL_ETC1_RGB8_OES, // ETC1	62 GL_ETC1_RGB8_OES, // ETC1

61 GL_RED_EXT, // RED_8	63 GL_RED_EXT, // RED_8

62 GL_LUMINANCE, // LUMINANCE_F16	64 GL_LUMINANCE, // LUMINANCE_F16

	65 GL_RG_EXT, // RG_88

63 };	66 };

64 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),	67 static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),

65 "format_gl_data_format does not handle all cases.");	68 "format_gl_data_format does not handle all cases.");

66	69

67 return format_gl_data_format[format];	70 return format_gl_data_format[format];

68 }	71 }

69	72

70 GLenum GLInternalFormat(ResourceFormat format) {	73 GLenum GLInternalFormat(ResourceFormat format) {

71 return GLDataFormat(format);	74 return GLDataFormat(format);

72 }	75 }

73	76

74 gfx::BufferFormat BufferFormat(ResourceFormat format) {	77 gfx::BufferFormat BufferFormat(ResourceFormat format) {

75 switch (format) {	78 switch (format) {

76 case BGRA_8888:	79 case BGRA_8888:

77 return gfx::BufferFormat::BGRA_8888;	80 return gfx::BufferFormat::BGRA_8888;

78 case RED_8:	81 case RED_8:

79 return gfx::BufferFormat::R_8;	82 return gfx::BufferFormat::R_8;

80 case RGBA_4444:	83 case RGBA_4444:

81 return gfx::BufferFormat::RGBA_4444;	84 return gfx::BufferFormat::RGBA_4444;

82 case RGBA_8888:	85 case RGBA_8888:

83 return gfx::BufferFormat::RGBA_8888;	86 return gfx::BufferFormat::RGBA_8888;

84 case ETC1:	87 case ETC1:

85 return gfx::BufferFormat::ETC1;	88 return gfx::BufferFormat::ETC1;

86 case ALPHA_8:	89 case ALPHA_8:

87 case LUMINANCE_8:	90 case LUMINANCE_8:

88 case RGB_565:	91 case RGB_565:

89 case LUMINANCE_F16:	92 case LUMINANCE_F16:

	93 case RG_88:

90 break;	94 break;

91 }	95 }

92 NOTREACHED();	96 NOTREACHED();

93 return gfx::BufferFormat::RGBA_8888;	97 return gfx::BufferFormat::RGBA_8888;

94 }	98 }

95	99

96 bool IsResourceFormatCompressed(ResourceFormat format) {	100 bool IsResourceFormatCompressed(ResourceFormat format) {

97 return format == ETC1;	101 return format == ETC1;

98 }	102 }

99	103

100 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {	104 bool DoesResourceFormatSupportAlpha(ResourceFormat format) {

101 switch (format) {	105 switch (format) {

102 case RGBA_4444:	106 case RGBA_4444:

103 case RGBA_8888:	107 case RGBA_8888:

104 case BGRA_8888:	108 case BGRA_8888:

105 case ALPHA_8:	109 case ALPHA_8:

106 return true;	110 return true;

107 case LUMINANCE_8:	111 case LUMINANCE_8:

108 case RGB_565:	112 case RGB_565:

109 case ETC1:	113 case ETC1:

110 case RED_8:	114 case RED_8:

111 case LUMINANCE_F16:	115 case LUMINANCE_F16:

	116 case RG_88:

112 return false;	117 return false;

113 }	118 }

114 NOTREACHED();	119 NOTREACHED();

115 return false;	120 return false;

116 }	121 }

117	122

118 } // namespace cc	123 } // namespace cc

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