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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Camera2-FrameProcessorBase"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <utils/Trace.h>
#include "common/FrameProcessorBase.h"
#include "common/CameraDeviceBase.h"
namespace android {
namespace camera2 {
FrameProcessorBase::FrameProcessorBase(wp<CameraDeviceBase> device) :
Thread(/*canCallJava*/false),
mDevice(device),
mNumPartialResults(1) {
sp<CameraDeviceBase> cameraDevice = device.promote();
if (cameraDevice != 0 &&
cameraDevice->getDeviceVersion() >= CAMERA_DEVICE_API_VERSION_3_2) {
CameraMetadata staticInfo = cameraDevice->info();
camera_metadata_entry_t entry = staticInfo.find(ANDROID_REQUEST_PARTIAL_RESULT_COUNT);
if (entry.count > 0) {
mNumPartialResults = entry.data.i32[0];
}
}
}
FrameProcessorBase::~FrameProcessorBase() {
ALOGV("%s: Exit", __FUNCTION__);
}
status_t FrameProcessorBase::registerListener(int32_t minId,
int32_t maxId, wp<FilteredListener> listener, bool sendPartials) {
Mutex::Autolock l(mInputMutex);
List<RangeListener>::iterator item = mRangeListeners.begin();
while (item != mRangeListeners.end()) {
if (item->minId == minId &&
item->maxId == maxId &&
item->listener == listener) {
// already registered, just return
ALOGV("%s: Attempt to register the same client twice, ignoring",
__FUNCTION__);
return OK;
}
item++;
}
ALOGV("%s: Registering listener for frame id range %d - %d",
__FUNCTION__, minId, maxId);
RangeListener rListener = { minId, maxId, listener, sendPartials };
mRangeListeners.push_back(rListener);
return OK;
}
status_t FrameProcessorBase::removeListener(int32_t minId,
int32_t maxId,
wp<FilteredListener> listener) {
Mutex::Autolock l(mInputMutex);
List<RangeListener>::iterator item = mRangeListeners.begin();
while (item != mRangeListeners.end()) {
if (item->minId == minId &&
item->maxId == maxId &&
item->listener == listener) {
item = mRangeListeners.erase(item);
} else {
item++;
}
}
return OK;
}
void FrameProcessorBase::dump(int fd, const Vector<String16>& /*args*/) {
String8 result(" Latest received frame:\n");
write(fd, result.string(), result.size());
CameraMetadata lastFrame;
{
// Don't race while dumping metadata
Mutex::Autolock al(mLastFrameMutex);
lastFrame = CameraMetadata(mLastFrame);
}
lastFrame.dump(fd, 2, 6);
}
bool FrameProcessorBase::threadLoop() {
status_t res;
sp<CameraDeviceBase> device;
{
device = mDevice.promote();
if (device == 0) return false;
}
res = device->waitForNextFrame(kWaitDuration);
if (res == OK) {
processNewFrames(device);
} else if (res != TIMED_OUT) {
ALOGE("FrameProcessorBase: Error waiting for new "
"frames: %s (%d)", strerror(-res), res);
}
return true;
}
void FrameProcessorBase::processNewFrames(const sp<CameraDeviceBase> &device) {
status_t res;
ATRACE_CALL();
CaptureResult result;
ALOGV("%s: Camera %d: Process new frames", __FUNCTION__, device->getId());
while ( (res = device->getNextResult(&result)) == OK) {
// TODO: instead of getting frame number from metadata, we should read
// this from result.mResultExtras when CameraDeviceBase interface is fixed.
camera_metadata_entry_t entry;
entry = result.mMetadata.find(ANDROID_REQUEST_FRAME_COUNT);
if (entry.count == 0) {
ALOGE("%s: Camera %d: Error reading frame number",
__FUNCTION__, device->getId());
break;
}
ATRACE_INT("cam2_frame", entry.data.i32[0]);
if (!processSingleFrame(result, device)) {
break;
}
if (!result.mMetadata.isEmpty()) {
Mutex::Autolock al(mLastFrameMutex);
mLastFrame.acquire(result.mMetadata);
}
}
if (res != NOT_ENOUGH_DATA) {
ALOGE("%s: Camera %d: Error getting next frame: %s (%d)",
__FUNCTION__, device->getId(), strerror(-res), res);
return;
}
return;
}
bool FrameProcessorBase::processSingleFrame(CaptureResult &result,
const sp<CameraDeviceBase> &device) {
ALOGV("%s: Camera %d: Process single frame (is empty? %d)",
__FUNCTION__, device->getId(), result.mMetadata.isEmpty());
return processListeners(result, device) == OK;
}
status_t FrameProcessorBase::processListeners(const CaptureResult &result,
const sp<CameraDeviceBase> &device) {
ATRACE_CALL();
camera_metadata_ro_entry_t entry;
// Check if this result is partial.
bool isPartialResult = false;
if (device->getDeviceVersion() >= CAMERA_DEVICE_API_VERSION_3_2) {
isPartialResult = result.mResultExtras.partialResultCount < mNumPartialResults;
} else {
entry = result.mMetadata.find(ANDROID_QUIRKS_PARTIAL_RESULT);
if (entry.count != 0 &&
entry.data.u8[0] == ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) {
ALOGV("%s: Camera %d: This is a partial result",
__FUNCTION__, device->getId());
isPartialResult = true;
}
}
// TODO: instead of getting requestID from CameraMetadata, we should get it
// from CaptureResultExtras. This will require changing Camera2Device.
// Currently Camera2Device uses MetadataQueue to store results, which does not
// include CaptureResultExtras.
entry = result.mMetadata.find(ANDROID_REQUEST_ID);
if (entry.count == 0) {
ALOGE("%s: Camera %d: Error reading frame id", __FUNCTION__, device->getId());
return BAD_VALUE;
}
int32_t requestId = entry.data.i32[0];
List<sp<FilteredListener> > listeners;
{
Mutex::Autolock l(mInputMutex);
List<RangeListener>::iterator item = mRangeListeners.begin();
// Don't deliver partial results to listeners that don't want them
while (item != mRangeListeners.end()) {
if (requestId >= item->minId && requestId < item->maxId &&
(!isPartialResult || item->sendPartials)) {
sp<FilteredListener> listener = item->listener.promote();
if (listener == 0) {
item = mRangeListeners.erase(item);
continue;
} else {
listeners.push_back(listener);
}
}
item++;
}
}
ALOGV("%s: Camera %d: Got %zu range listeners out of %zu", __FUNCTION__,
device->getId(), listeners.size(), mRangeListeners.size());
List<sp<FilteredListener> >::iterator item = listeners.begin();
for (; item != listeners.end(); item++) {
(*item)->onResultAvailable(result);
}
return OK;
}
}; // namespace camera2
}; // namespace android
|
