1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* post_processor_yuv.cpp - Post Processor using libyuv
*/
#include "post_processor_yuv.h"
#include <libyuv/scale.h>
#include <libcamera/base/log.h>
#include <libcamera/formats.h>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>
#include "libcamera/internal/formats.h"
#include "libcamera/internal/mapped_framebuffer.h"
using namespace libcamera;
LOG_DEFINE_CATEGORY(YUV)
int PostProcessorYuv::configure(const StreamConfiguration &inCfg,
const StreamConfiguration &outCfg)
{
if (inCfg.pixelFormat != outCfg.pixelFormat) {
LOG(YUV, Error) << "Pixel format conversion is not supported"
<< " (from " << inCfg.pixelFormat.toString()
<< " to " << outCfg.pixelFormat.toString() << ")";
return -EINVAL;
}
if (inCfg.size < outCfg.size) {
LOG(YUV, Error) << "Up-scaling is not supported"
<< " (from " << inCfg.size.toString()
<< " to " << outCfg.size.toString() << ")";
return -EINVAL;
}
if (inCfg.pixelFormat != formats::NV12) {
LOG(YUV, Error) << "Unsupported format " << inCfg.pixelFormat
<< " (only NV12 is supported)";
return -EINVAL;
}
calculateLengths(inCfg, outCfg);
return 0;
}
int PostProcessorYuv::process(Camera3RequestDescriptor::StreamBuffer *streamBuffer)
{
const FrameBuffer &source = *streamBuffer->srcBuffer;
CameraBuffer *destination = streamBuffer->dstBuffer.get();
if (!isValidBuffers(source, *destination)) {
processComplete.emit(streamBuffer, PostProcessor::Status::Error);
return -EINVAL;
}
const MappedFrameBuffer sourceMapped(&source, MappedFrameBuffer::MapFlag::Read);
if (!sourceMapped.isValid()) {
LOG(YUV, Error) << "Failed to mmap camera frame buffer";
processComplete.emit(streamBuffer, PostProcessor::Status::Error);
return -EINVAL;
}
int ret = libyuv::NV12Scale(sourceMapped.planes()[0].data(),
sourceStride_[0],
sourceMapped.planes()[1].data(),
sourceStride_[1],
sourceSize_.width, sourceSize_.height,
destination->plane(0).data(),
destinationStride_[0],
destination->plane(1).data(),
destinationStride_[1],
destinationSize_.width,
destinationSize_.height,
libyuv::FilterMode::kFilterBilinear);
if (ret) {
LOG(YUV, Error) << "Failed NV12 scaling: " << ret;
processComplete.emit(streamBuffer, PostProcessor::Status::Error);
return -EINVAL;
}
processComplete.emit(streamBuffer, PostProcessor::Status::Success);
return 0;
}
bool PostProcessorYuv::isValidBuffers(const FrameBuffer &source,
const CameraBuffer &destination) const
{
if (source.planes().size() != 2) {
LOG(YUV, Error) << "Invalid number of source planes: "
<< source.planes().size();
return false;
}
if (destination.numPlanes() != 2) {
LOG(YUV, Error) << "Invalid number of destination planes: "
<< destination.numPlanes();
return false;
}
if (source.planes()[0].length < sourceLength_[0] ||
source.planes()[1].length < sourceLength_[1]) {
LOG(YUV, Error)
<< "The source planes lengths are too small, actual size: {"
<< source.planes()[0].length << ", "
<< source.planes()[1].length
<< "}, expected size: {"
<< sourceLength_[0] << ", "
<< sourceLength_[1] << "}";
return false;
}
if (destination.plane(0).size() < destinationLength_[0] ||
destination.plane(1).size() < destinationLength_[1]) {
LOG(YUV, Error)
<< "The destination planes lengths are too small, actual size: {"
<< destination.plane(0).size() << ", "
<< destination.plane(1).size()
<< "}, expected size: {"
<< sourceLength_[0] << ", "
<< sourceLength_[1] << "}";
return false;
}
return true;
}
void PostProcessorYuv::calculateLengths(const StreamConfiguration &inCfg,
const StreamConfiguration &outCfg)
{
sourceSize_ = inCfg.size;
destinationSize_ = outCfg.size;
const PixelFormatInfo &nv12Info = PixelFormatInfo::info(formats::NV12);
for (unsigned int i = 0; i < 2; i++) {
sourceStride_[i] = inCfg.stride;
destinationStride_[i] = nv12Info.stride(destinationSize_.width, i, 1);
sourceLength_[i] = nv12Info.planeSize(sourceSize_.height, i,
sourceStride_[i]);
destinationLength_[i] = nv12Info.planeSize(destinationSize_.height, i,
destinationStride_[i]);
}
}
|
