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1 /*
2  * Copyright (C) 2011 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 /*
18  * Contains implementation of a class EmulatedQemuCamera that encapsulates
19  * functionality of an emulated camera connected to the host.
20  */
21 
22 #define LOG_NDEBUG 0
23 #define LOG_TAG "EmulatedCamera_QemuCamera"
24 #include "EmulatedQemuCamera.h"
25 #include <cutils/log.h>
26 #include "EmulatedCameraFactory.h"
27 
28 namespace android {
29 
30 EmulatedQemuCamera::EmulatedQemuCamera(int cameraId, struct hw_module_t* module)
31     : EmulatedCamera(cameraId, module), mQemuCameraDevice(this) {}
32 
33 EmulatedQemuCamera::~EmulatedQemuCamera() {}
34 
35 /****************************************************************************
36  * EmulatedCamera virtual overrides.
37  ***************************************************************************/
38 
39 status_t EmulatedQemuCamera::Initialize(const char* device_name,
40                                         const char* frame_dims,
41                                         const char* facing_dir) {
42   ALOGV("%s:\n   Name=%s\n   Facing '%s'\n   Dimensions=%s", __FUNCTION__,
43         device_name, facing_dir, frame_dims);
44   /* Save dimensions. */
45   mFrameDims = frame_dims;
46 
47   /* Initialize camera device. */
48   status_t res = mQemuCameraDevice.Initialize(device_name);
49   if (res != NO_ERROR) {
50     return res;
51   }
52 
53   /* Initialize base class. */
54   res = EmulatedCamera::Initialize();
55   if (res != NO_ERROR) {
56     return res;
57   }
58 
59   /*
60    * Set customizable parameters.
61    */
62 
63   mParameters.set(EmulatedCamera::FACING_KEY, facing_dir);
64   mParameters.set(EmulatedCamera::ORIENTATION_KEY,
65                   gEmulatedCameraFactory.getQemuCameraOrientation());
66   mParameters.set(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES, frame_dims);
67   mParameters.set(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES, frame_dims);
68 
69   /*
70    * Use first dimension reported by the device to set current preview and
71    * picture sizes.
72    */
73 
74   char first_dim[128];
75   /* Dimensions are separated with ',' */
76   const char* c = strchr(frame_dims, ',');
77   if (c == NULL) {
78     strncpy(first_dim, frame_dims, sizeof(first_dim));
79     first_dim[sizeof(first_dim) - 1] = '\0';
80   } else if (static_cast<size_t>(c - frame_dims) < sizeof(first_dim)) {
81     memcpy(first_dim, frame_dims, c - frame_dims);
82     first_dim[c - frame_dims] = '\0';
83   } else {
84     memcpy(first_dim, frame_dims, sizeof(first_dim));
85     first_dim[sizeof(first_dim) - 1] = '\0';
86   }
87 
88   /* Width and height are separated with 'x' */
89   char* sep = strchr(first_dim, 'x');
90   if (sep == NULL) {
91     ALOGE("%s: Invalid first dimension format in %s", __FUNCTION__, frame_dims);
92     return EINVAL;
93   }
94 
95   *sep = '\0';
96   const int x = atoi(first_dim);
97   const int y = atoi(sep + 1);
98   mParameters.setPreviewSize(x, y);
99   mParameters.setPictureSize(x, y);
100 
101   ALOGV("%s: Qemu camera %s is initialized. Current frame is %dx%d",
102         __FUNCTION__, device_name, x, y);
103 
104   return NO_ERROR;
105 }
106 
107 EmulatedCameraDevice* EmulatedQemuCamera::getCameraDevice() {
108   return &mQemuCameraDevice;
109 }
110 
111 }; /* namespace android */
112