278 lines
8.7 KiB
C++
278 lines
8.7 KiB
C++
#include "core/PointCloudProcessor.h"
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#include <QDebug>
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#include <vector>
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PointCloudProcessor::PointCloudProcessor(QObject *parent)
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: QObject(parent)
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, m_fx(1432.8957f)
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, m_fy(1432.6590f)
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, m_cx(637.5117f)
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, m_cy(521.8720f)
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, m_zScale(0.2f)
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, m_imageWidth(1224)
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, m_imageHeight(1024)
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, m_totalPoints(1224 * 1024)
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, m_platform(nullptr)
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, m_device(nullptr)
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, m_context(nullptr)
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, m_queue(nullptr)
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, m_program(nullptr)
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, m_kernel(nullptr)
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, m_depthBuffer(nullptr)
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, m_xyzBuffer(nullptr)
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, m_clInitialized(false)
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{
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}
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PointCloudProcessor::~PointCloudProcessor()
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{
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cleanupOpenCL();
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}
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void PointCloudProcessor::setCameraIntrinsics(float fx, float fy, float cx, float cy)
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{
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m_fx = fx;
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m_fy = fy;
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m_cx = cx;
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m_cy = cy;
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}
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void PointCloudProcessor::setZScaleFactor(float scale)
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{
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m_zScale = scale;
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}
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bool PointCloudProcessor::initializeOpenCL()
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{
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if (m_clInitialized) {
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return true;
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}
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cl_int err;
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qDebug() << "[OpenCL] Starting initialization...";
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// 1. 获取平台
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err = clGetPlatformIDs(1, &m_platform, nullptr);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to get OpenCL platform");
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return false;
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}
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// 2. 获取设备（优先GPU）
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err = clGetDeviceIDs(m_platform, CL_DEVICE_TYPE_GPU, 1, &m_device, nullptr);
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if (err != CL_SUCCESS) {
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qDebug() << "[OpenCL] GPU not available, using CPU";
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err = clGetDeviceIDs(m_platform, CL_DEVICE_TYPE_CPU, 1, &m_device, nullptr);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to get OpenCL device");
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return false;
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}
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}
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// 3. 创建上下文
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m_context = clCreateContext(nullptr, 1, &m_device, nullptr, nullptr, &err);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create OpenCL context");
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return false;
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}
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// 4. 创建命令队列
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#if CL_TARGET_OPENCL_VERSION >= 200
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cl_queue_properties props[] = { CL_QUEUE_ON_DEVICE_DEFAULT, 0 };
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m_queue = clCreateCommandQueueWithProperties(m_context, m_device, props, &err);
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#else
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m_queue = clCreateCommandQueue(m_context, m_device, 0, &err);
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#endif
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create command queue");
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cleanupOpenCL();
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return false;
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}
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qDebug() << "[OpenCL] Platform, device, context, and queue created successfully";
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// 5. 创建并编译OpenCL程序
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const char* kernelSource =
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"__kernel void compute_xyz(__global const float* depth, "
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"__global float* xyz, int width, int height, "
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"float inv_fx, float inv_fy, float cx, float cy, float z_scale) { "
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"int idx = get_global_id(0); "
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"if (idx >= width * height) return; "
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"int y = idx / width; "
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"int x = idx % width; "
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"float z = depth[idx] * z_scale; "
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// 完全平面的圆柱投影：X和Y直接使用像素坐标，缩放到合适的范围
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"xyz[idx*3] = (x - cx) * 2.0f; " // X坐标，缩放系数2.0
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"xyz[idx*3+1] = -(y - cy) * 2.0f; " // Y坐标取反，修正上下颠倒
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"xyz[idx*3+2] = z; "
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"}";
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m_program = clCreateProgramWithSource(m_context, 1, &kernelSource, nullptr, &err);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create OpenCL program");
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cleanupOpenCL();
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return false;
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}
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err = clBuildProgram(m_program, 1, &m_device, nullptr, nullptr, nullptr);
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if (err != CL_SUCCESS) {
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char buildLog[4096];
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clGetProgramBuildInfo(m_program, m_device, CL_PROGRAM_BUILD_LOG, sizeof(buildLog), buildLog, nullptr);
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emit errorOccurred(QString("Failed to build OpenCL program: %1").arg(buildLog));
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cleanupOpenCL();
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return false;
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}
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qDebug() << "[OpenCL] Program compiled successfully";
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// 6. 创建kernel
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m_kernel = clCreateKernel(m_program, "compute_xyz", &err);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create OpenCL kernel");
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cleanupOpenCL();
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return false;
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}
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// 7. 创建缓冲区
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m_depthBuffer = clCreateBuffer(m_context, CL_MEM_READ_ONLY,
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sizeof(float) * m_totalPoints, nullptr, &err);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create depth buffer");
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cleanupOpenCL();
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return false;
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}
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m_xyzBuffer = clCreateBuffer(m_context, CL_MEM_WRITE_ONLY,
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sizeof(float) * m_totalPoints * 3, nullptr, &err);
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if (err != CL_SUCCESS) {
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emit errorOccurred("Failed to create XYZ buffer");
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cleanupOpenCL();
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return false;
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}
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m_clInitialized = true;
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qDebug() << "[OpenCL] Initialization complete";
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return true;
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}
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void PointCloudProcessor::processDepthData(const QByteArray &depthData, uint32_t blockId)
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{
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if (!m_clInitialized) {
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if (!initializeOpenCL()) {
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return;
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}
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}
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// 验证数据大小
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if (depthData.size() != m_totalPoints * sizeof(int16_t)) {
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qDebug() << "[PointCloud] Invalid depth data size:" << depthData.size()
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<< "expected:" << (m_totalPoints * sizeof(int16_t));
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return;
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}
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// 转换int16_t到float
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const int16_t* depthShort = reinterpret_cast<const int16_t*>(depthData.constData());
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std::vector<float> depthFloat(m_totalPoints);
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for (size_t i = 0; i < m_totalPoints; i++) {
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depthFloat[i] = static_cast<float>(depthShort[i]);
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}
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// 注释掉频繁的日志输出
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// qDebug() << "[PointCloud] Processing block" << blockId << "with" << m_totalPoints << "points";
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// 上传深度数据到GPU
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cl_int err = clEnqueueWriteBuffer(m_queue, m_depthBuffer, CL_TRUE, 0,
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sizeof(float) * m_totalPoints, depthFloat.data(),
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0, nullptr, nullptr);
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if (err != CL_SUCCESS) {
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emit errorOccurred(QString("Failed to upload depth data: %1").arg(err));
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return;
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}
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// 设置kernel参数
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float inv_fx = 1.0f / m_fx;
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float inv_fy = 1.0f / m_fy;
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int width = m_imageWidth;
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int height = m_imageHeight;
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clSetKernelArg(m_kernel, 0, sizeof(cl_mem), &m_depthBuffer);
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clSetKernelArg(m_kernel, 1, sizeof(cl_mem), &m_xyzBuffer);
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clSetKernelArg(m_kernel, 2, sizeof(int), &width);
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clSetKernelArg(m_kernel, 3, sizeof(int), &height);
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clSetKernelArg(m_kernel, 4, sizeof(float), &inv_fx);
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clSetKernelArg(m_kernel, 5, sizeof(float), &inv_fy);
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clSetKernelArg(m_kernel, 6, sizeof(float), &m_cx);
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clSetKernelArg(m_kernel, 7, sizeof(float), &m_cy);
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clSetKernelArg(m_kernel, 8, sizeof(float), &m_zScale);
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// 执行kernel
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size_t local = 256;
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size_t global = ((m_totalPoints + local - 1) / local) * local;
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err = clEnqueueNDRangeKernel(m_queue, m_kernel, 1, nullptr,
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&global, &local, 0, nullptr, nullptr);
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if (err != CL_SUCCESS) {
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emit errorOccurred(QString("Failed to execute kernel: %1").arg(err));
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return;
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}
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clFinish(m_queue);
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// 读取结果
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std::vector<float> xyz(m_totalPoints * 3);
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err = clEnqueueReadBuffer(m_queue, m_xyzBuffer, CL_TRUE, 0,
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sizeof(float) * m_totalPoints * 3, xyz.data(),
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0, nullptr, nullptr);
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if (err != CL_SUCCESS) {
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emit errorOccurred(QString("Failed to read XYZ data: %1").arg(err));
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return;
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}
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// 创建PCL点云
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pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
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cloud->width = m_imageWidth;
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cloud->height = m_imageHeight;
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cloud->is_dense = false;
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cloud->points.resize(m_totalPoints);
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// 填充点云数据（过滤全零点）
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for (size_t i = 0; i < m_totalPoints; i++) {
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cloud->points[i].x = xyz[i * 3];
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cloud->points[i].y = xyz[i * 3 + 1];
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cloud->points[i].z = xyz[i * 3 + 2];
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}
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// 注释掉频繁的日志输出
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// qDebug() << "[PointCloud] Block" << blockId << "processed successfully";
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emit pointCloudReady(cloud, blockId);
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}
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void PointCloudProcessor::cleanupOpenCL()
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{
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if (m_depthBuffer) {
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clReleaseMemObject(m_depthBuffer);
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m_depthBuffer = nullptr;
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}
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if (m_xyzBuffer) {
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clReleaseMemObject(m_xyzBuffer);
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m_xyzBuffer = nullptr;
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}
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if (m_kernel) {
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clReleaseKernel(m_kernel);
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m_kernel = nullptr;
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}
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if (m_program) {
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clReleaseProgram(m_program);
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m_program = nullptr;
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}
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if (m_queue) {
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clReleaseCommandQueue(m_queue);
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m_queue = nullptr;
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}
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if (m_context) {
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clReleaseContext(m_context);
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m_context = nullptr;
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}
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m_clInitialized = false;
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qDebug() << "[OpenCL] Cleanup complete";
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}
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