236 lines
8.8 KiB
Python
236 lines
8.8 KiB
Python
import grpc
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import numpy as np
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from PIL import Image
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from typing import Tuple
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from .enums import CMVRErrorCode
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from .models import CameraState
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from .models import CameraIntrinsics
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class CameraClient:
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"""相机客户端"""
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def __init__(self, device_id: str, stub):
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self.device_id = device_id
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self.stub = stub
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self.generated = None # 推迟导入
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def _import_generated(self):
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"""推迟导入 generated"""
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if self.generated is None:
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try:
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# 从正确的路径导入生成的模块
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from generated.cmvr.api import common_pb2, camera_command_pb2
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self.generated = type('GeneratedModules', (), {
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'common_pb2': common_pb2,
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'camera_command_pb2': camera_command_pb2
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})
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except ImportError as e:
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print(f"导入生成的模块失败: {e}")
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print("请确保已生成 protobuf 代码")
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raise
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return self.generated
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def _create_command_header(self):
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generated = self._import_generated()
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"""创建命令头"""
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header = generated.common_pb2.CommandHeader.Request()
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header.device_id = self.device_id
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header.timestamp.GetCurrentTime()
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return header
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def get_status(self) -> Tuple[CMVRErrorCode, CameraState]:
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"""获取相机状态"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.GetCameraStateCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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response = self.stub.GetStatus(request)
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if not response.header.success:
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return CMVRErrorCode.CMVR_RPC_FAILED, CameraState()
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state = CameraState(
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is_initialized=response.state.is_initialized,
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is_opened=response.state.is_opened,
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is_streaming=response.state.is_streaming,
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is_recording=response.state.is_recording,
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width=response.state.width,
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height=response.state.height,
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fps=response.state.fps
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)
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return CMVRErrorCode.CMVR_SUCCESS, state
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except grpc.RpcError as e:
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print(f"获取相机状态失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED, CameraState()
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def start_camera(self) -> CMVRErrorCode:
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"""启动相机"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.StartCameraCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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response = self.stub.StartCamera(request)
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return CMVRErrorCode.CMVR_SUCCESS if response.header.success else CMVRErrorCode.CMVR_RPC_FAILED
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except grpc.RpcError as e:
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print(f"启动相机失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED
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def stop_camera(self) -> CMVRErrorCode:
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"""停止相机"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.StopCameraCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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response = self.stub.StopCamera(request)
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return CMVRErrorCode.CMVR_SUCCESS if response.header.success else CMVRErrorCode.CMVR_RPC_FAILED
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except grpc.RpcError as e:
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print(f"停止相机失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED
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def get_rgb_image(self) -> Tuple[CMVRErrorCode, np.ndarray, int, int]:
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"""获取RGB图像"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.GetRGBImageCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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response = self.stub.GetRGBImage(request)
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if not response.header.success:
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return CMVRErrorCode.CMVR_RPC_FAILED, np.array([]), 0, 0
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width = response.color_frame.width
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height = response.color_frame.height
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size = len(response.color_frame.data)
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# 将字节数据转换为numpy数组
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img_data = np.frombuffer(response.color_frame.data, dtype=np.uint8)
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# 从 Protobuf 消息中读取 intrinsics 数据
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protobuf_intrinsics = response.intrinsics
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# 构造 Python 数据类对象（字段名称完全对应）
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python_intrinsics = CameraIntrinsics(
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cx=protobuf_intrinsics.cx,
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cy=protobuf_intrinsics.cy,
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fx=protobuf_intrinsics.fx,
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fy=protobuf_intrinsics.fy,
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coeffs=list(protobuf_intrinsics.coeffs) # Protobuf repeated 字段通常是列表类型，直接转换
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)
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# 示例：访问读取后的数据
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print(f"主点坐标: ({python_intrinsics.cx}, {python_intrinsics.cy})")
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print(f"焦距: ({python_intrinsics.fx}, {python_intrinsics.fy})")
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print(f"畸变系数: {python_intrinsics.coeffs}")
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# 重塑为图像格式 (height, width, channels)
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channels = 3 # 假设是RGB图像
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if size == width * height * channels:
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img_array = img_data.reshape((height, width, channels))
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else:
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# 可能是灰度图或其他格式
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img_array = img_data.reshape((height, width))
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return CMVRErrorCode.CMVR_SUCCESS, img_array, width, height
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except grpc.RpcError as e:
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print(f"获取图像失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED, np.array([]), 0, 0
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def start_record(self, video_path: str) -> CMVRErrorCode:
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"""开始录像"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.StartCameraRecordingCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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request.video_path = video_path
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response = self.stub.StartRecording(request)
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return CMVRErrorCode.CMVR_SUCCESS if response.header.success else CMVRErrorCode.CMVR_RPC_FAILED
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except grpc.RpcError as e:
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print(f"开始录像失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED
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def stop_record(self) -> CMVRErrorCode:
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"""停止录像"""
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try:
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generated = self._import_generated()
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request = generated.camera_command_pb2.StopCameraRecordingCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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response = self.stub.StopRecording(request)
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return CMVRErrorCode.CMVR_SUCCESS if response.header.success else CMVRErrorCode.CMVR_RPC_FAILED
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except grpc.RpcError as e:
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print(f"停止录像失败: {e}")
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return CMVRErrorCode.CMVR_RPC_FAILED
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def create_rgb_stream_request(self):
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"""创建流请求（无参数）"""
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generated = self._import_generated()
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request = generated.camera_command_pb2.GetRGBImageStreamCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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# 不需要设置其他参数
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return request
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def get_rgb_stream(self, request_generator):
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"""
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双向流获取传感器数据
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参数:
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request_generator: 请求生成器
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返回:
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传感器数据流迭代器
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"""
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generated = self._import_generated()
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return self.stub.GetRGBImageStream(request_generator)
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def create_depth_stream_request(self):
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"""创建流请求（无参数）"""
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generated = self._import_generated()
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request = generated.camera_command_pb2.GetDepthImageStreamCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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# 不需要设置其他参数
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return request
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def get_depth_stream(self, request_generator):
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"""
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双向流获取传感器数据
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参数:
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request_generator: 请求生成器
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返回:
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传感器数据流迭代器
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"""
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generated = self._import_generated()
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return self.stub.GetDepthImageStream(request_generator)
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def create_rgbd_stream_request(self):
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"""创建流请求（无参数）"""
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generated = self._import_generated()
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request = generated.camera_command_pb2.GetRGBDImageStreamCommand.Request()
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request.header.CopyFrom(self._create_command_header())
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# 不需要设置其他参数
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return request
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def get_rgbd_stream(self, request_generator):
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"""
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双向流获取传感器数据
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参数:
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request_generator: 请求生成器
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返回:
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传感器数据流迭代器
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"""
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generated = self._import_generated()
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return self.stub.GetRGBDImageStream(request_generator) |