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1 /* |
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2 * Copyright (C) 2005 The Android Open Source Project |
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3 * |
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4 * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 * you may not use this file except in compliance with the License. |
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6 * You may obtain a copy of the License at |
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7 * |
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8 * http://www.apache.org/licenses/LICENSE-2.0 |
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9 * |
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10 * Unless required by applicable law or agreed to in writing, software |
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11 * distributed under the License is distributed on an "AS IS" BASIS, |
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 * See the License for the specific language governing permissions and |
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14 * limitations under the License. |
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15 */ |
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16 |
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17 // |
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18 |
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19 // Pixel formats used across the system. |
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20 // These formats might not all be supported by all renderers, for instance |
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21 // skia or SurfaceFlinger are not required to support all of these formats |
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22 // (either as source or destination) |
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23 |
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24 // XXX: we should consolidate these formats and skia's |
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25 |
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26 #ifndef UI_PIXELFORMAT_H |
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27 #define UI_PIXELFORMAT_H |
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28 |
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29 #include <stdint.h> |
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30 #include <sys/types.h> |
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31 #include <utils/Errors.h> |
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32 #include <pixelflinger/format.h> |
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33 #include <hardware/hardware.h> |
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34 |
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35 namespace android { |
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36 |
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37 enum { |
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38 // |
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39 // these constants need to match those |
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40 // in graphics/PixelFormat.java & pixelflinger/format.h |
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41 // |
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42 PIXEL_FORMAT_UNKNOWN = 0, |
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43 PIXEL_FORMAT_NONE = 0, |
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44 |
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45 // logical pixel formats used by the SurfaceFlinger ----------------------- |
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46 PIXEL_FORMAT_CUSTOM = -4, |
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47 // Custom pixel-format described by a PixelFormatInfo structure |
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48 |
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49 PIXEL_FORMAT_TRANSLUCENT = -3, |
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50 // System chooses a format that supports translucency (many alpha bits) |
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51 |
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52 PIXEL_FORMAT_TRANSPARENT = -2, |
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53 // System chooses a format that supports transparency |
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54 // (at least 1 alpha bit) |
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55 |
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56 PIXEL_FORMAT_OPAQUE = -1, |
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57 // System chooses an opaque format (no alpha bits required) |
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58 |
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59 // real pixel formats supported for rendering ----------------------------- |
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60 |
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61 PIXEL_FORMAT_RGBA_8888 = HAL_PIXEL_FORMAT_RGBA_8888, // 4x8-bit RGBA |
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62 PIXEL_FORMAT_RGBX_8888 = HAL_PIXEL_FORMAT_RGBX_8888, // 4x8-bit RGB0 |
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63 PIXEL_FORMAT_RGB_888 = HAL_PIXEL_FORMAT_RGB_888, // 3x8-bit RGB |
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64 PIXEL_FORMAT_RGB_565 = HAL_PIXEL_FORMAT_RGB_565, // 16-bit RGB |
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65 PIXEL_FORMAT_BGRA_8888 = HAL_PIXEL_FORMAT_BGRA_8888, // 4x8-bit BGRA |
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66 PIXEL_FORMAT_RGBA_5551 = HAL_PIXEL_FORMAT_RGBA_5551, // 16-bit ARGB |
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67 PIXEL_FORMAT_RGBA_4444 = HAL_PIXEL_FORMAT_RGBA_4444, // 16-bit ARGB |
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68 PIXEL_FORMAT_A_8 = GGL_PIXEL_FORMAT_A_8, // 8-bit A |
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69 PIXEL_FORMAT_L_8 = GGL_PIXEL_FORMAT_L_8, // 8-bit L (R=G=B=L) |
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70 PIXEL_FORMAT_LA_88 = GGL_PIXEL_FORMAT_LA_88, // 16-bit LA |
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71 PIXEL_FORMAT_RGB_332 = GGL_PIXEL_FORMAT_RGB_332, // 8-bit RGB |
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72 |
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73 // New formats can be added if they're also defined in |
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74 // pixelflinger/format.h |
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75 }; |
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76 |
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77 typedef int32_t PixelFormat; |
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78 |
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79 struct PixelFormatInfo |
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80 { |
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81 enum { |
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82 INDEX_ALPHA = 0, |
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83 INDEX_RED = 1, |
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84 INDEX_GREEN = 2, |
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85 INDEX_BLUE = 3 |
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86 }; |
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87 |
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88 enum { // components |
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89 ALPHA = 1, |
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90 RGB = 2, |
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91 RGBA = 3, |
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92 LUMINANCE = 4, |
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93 LUMINANCE_ALPHA = 5, |
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94 OTHER = 0xFF |
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95 }; |
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96 |
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97 struct szinfo { |
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98 uint8_t h; |
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99 uint8_t l; |
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100 }; |
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101 |
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102 inline PixelFormatInfo() : version(sizeof(PixelFormatInfo)) { } |
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103 size_t getScanlineSize(unsigned int width) const; |
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104 size_t getSize(size_t ci) const { |
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105 return (ci <= 3) ? (cinfo[ci].h - cinfo[ci].l) : 0; |
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106 } |
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107 size_t version; |
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108 PixelFormat format; |
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109 size_t bytesPerPixel; |
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110 size_t bitsPerPixel; |
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111 union { |
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112 szinfo cinfo[4]; |
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113 struct { |
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114 uint8_t h_alpha; |
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115 uint8_t l_alpha; |
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116 uint8_t h_red; |
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117 uint8_t l_red; |
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118 uint8_t h_green; |
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119 uint8_t l_green; |
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120 uint8_t h_blue; |
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121 uint8_t l_blue; |
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122 }; |
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123 }; |
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124 uint8_t components; |
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125 uint8_t reserved0[3]; |
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126 uint32_t reserved1; |
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127 }; |
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128 |
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129 // Consider caching the results of these functions are they're not |
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130 // guaranteed to be fast. |
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131 ssize_t bytesPerPixel(PixelFormat format); |
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132 ssize_t bitsPerPixel(PixelFormat format); |
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133 status_t getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info); |
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134 |
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135 }; // namespace android |
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136 |
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137 #endif // UI_PIXELFORMAT_H |