1 /*
2  * Copyright (C) 2017 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 EVS_VTS_FORMATCONVERT_H
18 #define EVS_VTS_FORMATCONVERT_H
19 
20 #include <queue>
21 #include <stdint.h>
22 
23 namespace android {
24 namespace automotive {
25 namespace evs {
26 namespace support {
27 
28 // Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx values.
29 // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
30 // U/V array.  It assumes an even width and height for the overall image, and a horizontal
31 // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
32 void copyNV21toRGB32(unsigned width, unsigned height,
33                      uint8_t* src,
34                      uint32_t* dst, unsigned dstStridePixels);
35 
36 
37 // Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx values.
38 // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
39 // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
40 // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
41 // and V arrays.
42 void copyYV12toRGB32(unsigned width, unsigned height,
43                      uint8_t* src,
44                      uint32_t* dst, unsigned dstStridePixels);
45 
46 
47 // Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx values.
48 // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
49 // U/V array.  It assumes an even width and height for the overall image, and a horizontal
50 // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
51 void copyYUYVtoRGB32(unsigned width, unsigned height,
52                      uint8_t* src, unsigned srcStrideBytes,
53                      uint32_t* dst, unsigned dstStrideBytes);
54 
55 
56 // Given an simple rectangular image buffer with an integer number of bytes per pixel,
57 // copy the pixel values into a new rectangular buffer (potentially with a different stride).
58 // This is typically used to copy RGBx data into an RGBx output buffer.
59 void copyMatchedInterleavedFormats(unsigned width, unsigned height,
60                                    void* src, unsigned srcStridePixels,
61                                    void* dst, unsigned dstStridePixels,
62                                    unsigned pixelSize);
63 
64 }  // namespace support
65 }  // namespace evs
66 }  // namespace automotive
67 }  // namespace android
68 
69 #endif // EVS_VTS_FORMATCONVERT_H
70