blob: 6c87adba98fbb9fde53b9ce3699f474fad9cd58f (
plain)
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019-2021, Google Inc.
*
* camera_request.cpp - libcamera Android Camera Request Descriptor
*/
#include "camera_request.h"
#include <libcamera/base/span.h>
#include "camera_buffer.h"
using namespace libcamera;
/*
* \class Camera3RequestDescriptor
*
* A utility class that groups information about a capture request to be later
* reused at request complete time to notify the framework.
*
*******************************************************************************
* Lifetime of a Camera3RequestDescriptor tracking a capture request placed by
* Android Framework
*******************************************************************************
*
*
* Android Framework
* │
* │ ┌──────────────────────────────────┐
* │ │camera3_capture_request_t │
* │ │ │
* │ │Requested output streams │
* │ │ stream1 stream2 stream3 ... │
* │ └──────────────────────────────────┘
* ▼
* ┌─────────────────────────────────────────────────────────────┐
* │ libcamera HAL │
* ├─────────────────────────────────────────────────────────────┤
* │ CameraDevice │
* │ │
* │ processCaptureRequest(camera3_capture_request_t request) │
* │ │
* │ - Create Camera3RequestDescriptor tracking this request │
* │ - Streams requiring post-processing are stored in the │
* │ pendingStreamsToProcess map │
* │ - Add this Camera3RequestDescriptor to descriptors' queue │
* │ CameraDevice::descriptors_ │
* │ │ ┌─────────────────────────┐
* │ - Queue the capture request to libcamera core ────────────┤►│libcamera core │
* │ │ ├─────────────────────────┤
* │ │ │- Capture from Camera │
* │ │ │ │
* │ │ │- Emit │
* │ │ │ Camera::requestComplete│
* │ requestCompleted(Request *request) ◄───────────────────────┼─┼──── │
* │ │ │ │
* │ - Check request completion status │ └─────────────────────────┘
* │ │
* │ - if (pendingStreamsToProcess > 0) │
* │ Queue all entries from pendingStreamsToProcess │
* │ else │ │
* │ completeDescriptor() │ └──────────────────────┐
* │ │ │
* │ ┌──────────────────────────┴───┬──────────────────┐ │
* │ │ │ │ │
* │ ┌──────────▼────────────┐ ┌───────────▼─────────┐ ▼ │
* │ │CameraStream1 │ │CameraStream2 │ .... │
* │ ├┬───┬───┬──────────────┤ ├┬───┬───┬────────────┤ │
* │ ││ │ │ │ ││ │ │ │ │
* │ │▼───▼───▼──────────────┤ │▼───▼───▼────────────┤ │
* │ │PostProcessorWorker │ │PostProcessorWorker │ │
* │ │ │ │ │ │
* │ │ +------------------+ │ │ +------------------+│ │
* │ │ | PostProcessor | │ │ | PostProcessor |│ │
* │ │ | process() | │ │ | process() |│ │
* │ │ | | │ │ | |│ │
* │ │ | Emit | │ │ | Emit |│ │
* │ │ | processComplete | │ │ | processComplete |│ │
* │ │ | | │ │ | |│ │
* │ │ +--------------│---+ │ │ +--------------│---+│ │
* │ │ │ │ │ │ │ │
* │ │ │ │ │ │ │ │
* │ └────────────────┼──────┘ └────────────────┼────┘ │
* │ │ │ │
* │ │ │ │
* │ │ │ │
* │ ▼ ▼ │
* │ +---------------------------------------+ +--------------+ │
* │ | CameraDevice | | | │
* │ | | | | │
* │ | streamProcessingComplete() | | | │
* │ | | | | │
* │ | - Check and set buffer status | | .... | │
* │ | - Remove post+processing entry | | | │
* │ | from pendingStreamsToProcess | | | │
* │ | | | | │
* │ | - if (pendingStreamsToProcess.empty())| | | │
* │ | completeDescriptor | | | │
* │ | | | | │
* │ +---------------------------------------+ +--------------+ │
* │ │
* └────────────────────────────────────────────────────────────────────────────────────┘
*
* +-------------+
* | | - PostProcessorWorker's thread
* | |
* +-------------+
*/
Camera3RequestDescriptor::Camera3RequestDescriptor(
Camera *camera, const camera3_capture_request_t *camera3Request)
{
frameNumber_ = camera3Request->frame_number;
/* Copy the camera3 request stream information for later access. */
const Span<const camera3_stream_buffer_t> buffers{
camera3Request->output_buffers,
camera3Request->num_output_buffers
};
buffers_.reserve(buffers.size());
for (const camera3_stream_buffer_t &buffer : buffers) {
CameraStream *stream =
static_cast<CameraStream *>(buffer.stream->priv);
buffers_.emplace_back(stream, buffer, this);
}
/* Clone the controls associated with the camera3 request. */
settings_ = CameraMetadata(camera3Request->settings);
/*
* Create the CaptureRequest, stored as a unique_ptr<> to tie its
* lifetime to the descriptor.
*/
request_ = camera->createRequest(reinterpret_cast<uint64_t>(this));
}
Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;
/**
* \struct Camera3RequestDescriptor::StreamBuffer
* \brief Group information for per-stream buffer of Camera3RequestDescriptor
*
* A capture request placed to the libcamera HAL can contain multiple streams.
* Each stream will have an associated buffer to be filled. StreamBuffer
* tracks this buffer with contextual information which aids in the stream's
* generation. The generation of the stream will depend on its type (refer to
* the CameraStream::Type documentation).
*
* \var Camera3RequestDescriptor::StreamBuffer::stream
* \brief Pointer to the corresponding CameraStream
*
* \var Camera3RequestDescriptor::StreamBuffer::camera3Buffer
* \brief Native handle to the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::frameBuffer
* \brief Encapsulate the dmabuf handle inside a libcamera::FrameBuffer for
* direct streams
*
* \var Camera3RequestDescriptor::StreamBuffer::fence
* \brief Acquire fence of the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::status
* \brief Track the status of the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::internalBuffer
* \brief Pointer to a buffer internally handled by CameraStream (if any)
*
* \var Camera3RequestDescriptor::StreamBuffer::srcBuffer
* \brief Pointer to the source frame buffer used for post-processing
*
* \var Camera3RequestDescriptor::StreamBuffer::dstBuffer
* \brief Pointer to the destination frame buffer used for post-processing
*
* \var Camera3RequestDescriptor::StreamBuffer::request
* \brief Back pointer to the Camera3RequestDescriptor to which the StreamBuffer belongs
*/
Camera3RequestDescriptor::StreamBuffer::StreamBuffer(
CameraStream *cameraStream, const camera3_stream_buffer_t &buffer,
Camera3RequestDescriptor *requestDescriptor)
: stream(cameraStream), camera3Buffer(buffer.buffer),
fence(buffer.acquire_fence), request(requestDescriptor)
{
}
Camera3RequestDescriptor::StreamBuffer::~StreamBuffer() = default;
Camera3RequestDescriptor::StreamBuffer::StreamBuffer(StreamBuffer &&) = default;
Camera3RequestDescriptor::StreamBuffer &
Camera3RequestDescriptor::StreamBuffer::operator=(Camera3RequestDescriptor::StreamBuffer &&) = default;
|
