PixelFormat.cpp revision 5773d3f5b2694c647e010246dff99acc70131289 
1/*
2 * Copyright (C) 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#include <ui/PixelFormat.h>
18#include <hardware/hardware.h>
19
20// ----------------------------------------------------------------------------
21namespace android {
22// ----------------------------------------------------------------------------
23
24ssize_t bytesPerPixel(PixelFormat format) {
25    switch (format) {
26        case HAL_PIXEL_FORMAT_RGBA_8888:
27        case HAL_PIXEL_FORMAT_RGBX_8888:
28        case HAL_PIXEL_FORMAT_BGRA_8888:
29            return 4;
30        case HAL_PIXEL_FORMAT_RGB_888:
31            return 3;
32        case HAL_PIXEL_FORMAT_RGB_565:
33        case HAL_PIXEL_FORMAT_RGBA_5551:
34        case HAL_PIXEL_FORMAT_RGBA_4444:
35            return 2;
36        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
37        case HAL_PIXEL_FORMAT_YCbCr_422_I:
38        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
39        case HAL_PIXEL_FORMAT_YV12:
40            return 1;
41    }
42    return BAD_VALUE;
43}
44
45ssize_t bitsPerPixel(PixelFormat format) {
46    switch (format) {
47        case HAL_PIXEL_FORMAT_RGBA_8888:
48        case HAL_PIXEL_FORMAT_RGBX_8888:
49        case HAL_PIXEL_FORMAT_BGRA_8888:
50            return 32;
51        case HAL_PIXEL_FORMAT_RGB_888:
52            return 24;
53        case HAL_PIXEL_FORMAT_RGB_565:
54        case HAL_PIXEL_FORMAT_RGBA_5551:
55        case HAL_PIXEL_FORMAT_RGBA_4444:
56        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
57        case HAL_PIXEL_FORMAT_YCbCr_422_I:
58            return 16;
59        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
60        case HAL_PIXEL_FORMAT_YV12:
61            return 12;
62    }
63    return BAD_VALUE;
64}
65
66// ----------------------------------------------------------------------------
67}; // namespace android
68// ----------------------------------------------------------------------------
69
70