PixelFormat.h revision 6a5d35dd5cd8710c6c9f100076e62ffbdb0b868b 
1/*
2 * Copyright (C) 2005 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//
18
19// Pixel formats used across the system.
20// These formats might not all be supported by all renderers, for instance
21// skia or SurfaceFlinger are not required to support all of these formats
22// (either as source or destination)
23
24
25#ifndef UI_PIXELFORMAT_H
26#define UI_PIXELFORMAT_H
27
28#include <stdint.h>
29#include <sys/types.h>
30#include <utils/Errors.h>
31#include <hardware/hardware.h>
32
33namespace android {
34
35enum {
36    //
37    // these constants need to match those
38    // in graphics/PixelFormat.java & pixelflinger/format.h
39    //
40    PIXEL_FORMAT_UNKNOWN    =   0,
41    PIXEL_FORMAT_NONE       =   0,
42
43    // logical pixel formats used by the SurfaceFlinger -----------------------
44    PIXEL_FORMAT_CUSTOM         = -4,
45        // Custom pixel-format described by a PixelFormatInfo structure
46
47    PIXEL_FORMAT_TRANSLUCENT    = -3,
48        // System chooses a format that supports translucency (many alpha bits)
49
50    PIXEL_FORMAT_TRANSPARENT    = -2,
51        // System chooses a format that supports transparency
52        // (at least 1 alpha bit)
53
54    PIXEL_FORMAT_OPAQUE         = -1,
55        // System chooses an opaque format (no alpha bits required)
56
57    // real pixel formats supported for rendering -----------------------------
58
59    PIXEL_FORMAT_RGBA_8888   = HAL_PIXEL_FORMAT_RGBA_8888,   // 4x8-bit RGBA
60    PIXEL_FORMAT_RGBX_8888   = HAL_PIXEL_FORMAT_RGBX_8888,   // 4x8-bit RGB0
61    PIXEL_FORMAT_RGB_888     = HAL_PIXEL_FORMAT_RGB_888,     // 3x8-bit RGB
62    PIXEL_FORMAT_RGB_565     = HAL_PIXEL_FORMAT_RGB_565,     // 16-bit RGB
63    PIXEL_FORMAT_BGRA_8888   = HAL_PIXEL_FORMAT_BGRA_8888,   // 4x8-bit BGRA
64    PIXEL_FORMAT_RGBA_5551   = 6,                            // 16-bit ARGB
65    PIXEL_FORMAT_RGBA_4444   = 7,                            // 16-bit ARGB
66    PIXEL_FORMAT_sRGB_A_8888 = HAL_PIXEL_FORMAT_sRGB_A_8888, // 4x8-bit sRGB + A
67    PIXEL_FORMAT_sRGB_X_8888 = HAL_PIXEL_FORMAT_sRGB_X_8888, // 4x8-bit sRGB, no A
68};
69
70typedef int32_t PixelFormat;
71
72ssize_t bytesPerPixel(PixelFormat format);
73ssize_t bitsPerPixel(PixelFormat format);
74
75}; // namespace android
76
77#endif // UI_PIXELFORMAT_H
78