Implements connection with the emulator

Change-Id: Ie3910a98e927f7b8ea556c403f8ced27e06bcdec

tools/emulator/system/camera/emulated_qemu_camera.cpp

@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/*
+ * Contains implementation of a class EmulatedQemuCamera that encapsulates
+ * functionality of an emulated camera connected to the host.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera_QemuCamera"
+#include <cutils/log.h>
+#include "emulated_qemu_camera.h"
+#include "emulated_camera_factory.h"
+
+namespace android {
+
+EmulatedQemuCamera::EmulatedQemuCamera(int cameraId, struct hw_module_t* module)
+        : EmulatedCamera(cameraId, module),
+          qemu_camera_dev_(this)
+{
+}
+
+EmulatedQemuCamera::~EmulatedQemuCamera()
+{
+}
+
+/****************************************************************************
+ * EmulatedCamera virtual overrides.
+ ***************************************************************************/
+
+status_t EmulatedQemuCamera::Initialize(const char* device_name,
+                                        const char* frame_dims)
+{
+    /* Save dimensions. */
+    frame_dims_ = frame_dims;
+
+    /* Initialize camera device. */
+    status_t res = qemu_camera_dev_.Initialize(device_name);
+    if (res != NO_ERROR) {
+        return res;
+    }
+
+    /* Initialize base class. */
+    res = EmulatedCamera::Initialize();
+    if (res != NO_ERROR) {
+        return res;
+    }
+
+    /*
+     * Set customizable parameters.
+     */
+
+    const char* facing = EmulatedCamera::FACING_FRONT;
+    if (_emulated_camera_factory.GetQemuCameraOrientation() == CAMERA_FACING_BACK) {
+        facing = EmulatedCamera::FACING_BACK;
+    }
+    parameters_.set(EmulatedCamera::FACING_KEY, facing);
+    parameters_.set(EmulatedCamera::ORIENTATION_KEY,
+                    _emulated_camera_factory.GetQemuCameraOrientation());
+    parameters_.set(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES, frame_dims);
+    parameters_.set(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES, frame_dims);
+
+    /*
+     * Use first dimension reported by the device to set current preview and
+     * picture sizes.
+     */
+
+    char first_dim[128];
+    /* Dimensions are separated with ',' */
+    const char* c = strchr(frame_dims, ',');
+    if (c == NULL) {
+        strncpy(first_dim, frame_dims, sizeof(first_dim));
+        first_dim[sizeof(first_dim)-1] = '\0';
+    } else if ((c - frame_dims) < sizeof(first_dim)) {
+        memcpy(first_dim, frame_dims, c - frame_dims);
+        first_dim[c - frame_dims] = '\0';
+    } else {
+        memcpy(first_dim, frame_dims, sizeof(first_dim));
+        first_dim[sizeof(first_dim)-1] = '\0';
+    }
+
+    /* Width and height are separated with 'x' */
+    char* sep = strchr(first_dim, 'x');
+    if (sep == NULL) {
+        LOGE("%s: Invalid first dimension format in %s",
+             __FUNCTION__, frame_dims);
+        return EINVAL;
+    }
+
+    *sep = '\0';
+    const int x = atoi(first_dim);
+    const int y = atoi(sep + 1);
+    parameters_.setPreviewSize(x, y);
+    parameters_.setPictureSize(x, y);
+
+    LOGV("%s: Qemu camera %s is initialized. Current frame is %dx%d",
+         __FUNCTION__, device_name, x, y);
+
+    return NO_ERROR;
+}
+
+EmulatedCameraDevice* EmulatedQemuCamera::GetCameraDevice()
+{
+    return &qemu_camera_dev_;
+}
+
+};  /* namespace android */