Compile FrogPilot
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@@ -1,138 +0,0 @@
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#include "system/camerad/cameras/camera_util.h"
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#include <string.h>
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#include <cassert>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include "common/swaglog.h"
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#include "common/util.h"
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// ************** low level camera helpers ****************
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int do_cam_control(int fd, int op_code, void *handle, int size) {
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struct cam_control camcontrol = {0};
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camcontrol.op_code = op_code;
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camcontrol.handle = (uint64_t)handle;
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if (size == 0) {
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camcontrol.size = 8;
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camcontrol.handle_type = CAM_HANDLE_MEM_HANDLE;
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} else {
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camcontrol.size = size;
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camcontrol.handle_type = CAM_HANDLE_USER_POINTER;
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}
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int ret = HANDLE_EINTR(ioctl(fd, VIDIOC_CAM_CONTROL, &camcontrol));
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if (ret == -1) {
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LOGE("VIDIOC_CAM_CONTROL error: op_code %d - errno %d", op_code, errno);
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}
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return ret;
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}
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std::optional<int32_t> device_acquire(int fd, int32_t session_handle, void *data, uint32_t num_resources) {
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struct cam_acquire_dev_cmd cmd = {
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.session_handle = session_handle,
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.handle_type = CAM_HANDLE_USER_POINTER,
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.num_resources = (uint32_t)(data ? num_resources : 0),
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.resource_hdl = (uint64_t)data,
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};
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int err = do_cam_control(fd, CAM_ACQUIRE_DEV, &cmd, sizeof(cmd));
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return err == 0 ? std::make_optional(cmd.dev_handle) : std::nullopt;
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}
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int device_config(int fd, int32_t session_handle, int32_t dev_handle, uint64_t packet_handle) {
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struct cam_config_dev_cmd cmd = {
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.session_handle = session_handle,
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.dev_handle = dev_handle,
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.packet_handle = packet_handle,
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};
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return do_cam_control(fd, CAM_CONFIG_DEV, &cmd, sizeof(cmd));
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}
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int device_control(int fd, int op_code, int session_handle, int dev_handle) {
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// start stop and release are all the same
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struct cam_start_stop_dev_cmd cmd { .session_handle = session_handle, .dev_handle = dev_handle };
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return do_cam_control(fd, op_code, &cmd, sizeof(cmd));
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}
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void *alloc_w_mmu_hdl(int video0_fd, int len, uint32_t *handle, int align, int flags, int mmu_hdl, int mmu_hdl2) {
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struct cam_mem_mgr_alloc_cmd mem_mgr_alloc_cmd = {0};
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mem_mgr_alloc_cmd.len = len;
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mem_mgr_alloc_cmd.align = align;
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mem_mgr_alloc_cmd.flags = flags;
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mem_mgr_alloc_cmd.num_hdl = 0;
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if (mmu_hdl != 0) {
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mem_mgr_alloc_cmd.mmu_hdls[0] = mmu_hdl;
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mem_mgr_alloc_cmd.num_hdl++;
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}
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if (mmu_hdl2 != 0) {
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mem_mgr_alloc_cmd.mmu_hdls[1] = mmu_hdl2;
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mem_mgr_alloc_cmd.num_hdl++;
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}
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do_cam_control(video0_fd, CAM_REQ_MGR_ALLOC_BUF, &mem_mgr_alloc_cmd, sizeof(mem_mgr_alloc_cmd));
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*handle = mem_mgr_alloc_cmd.out.buf_handle;
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void *ptr = NULL;
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if (mem_mgr_alloc_cmd.out.fd > 0) {
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ptr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, mem_mgr_alloc_cmd.out.fd, 0);
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assert(ptr != MAP_FAILED);
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}
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// LOGD("allocated: %x %d %llx mapped %p", mem_mgr_alloc_cmd.out.buf_handle, mem_mgr_alloc_cmd.out.fd, mem_mgr_alloc_cmd.out.vaddr, ptr);
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return ptr;
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}
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void release(int video0_fd, uint32_t handle) {
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int ret;
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struct cam_mem_mgr_release_cmd mem_mgr_release_cmd = {0};
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mem_mgr_release_cmd.buf_handle = handle;
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ret = do_cam_control(video0_fd, CAM_REQ_MGR_RELEASE_BUF, &mem_mgr_release_cmd, sizeof(mem_mgr_release_cmd));
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assert(ret == 0);
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}
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void release_fd(int video0_fd, uint32_t handle) {
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// handle to fd
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close(handle>>16);
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release(video0_fd, handle);
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}
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void *MemoryManager::alloc_buf(int size, uint32_t *handle) {
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lock.lock();
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void *ptr;
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if (!cached_allocations[size].empty()) {
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ptr = cached_allocations[size].front();
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cached_allocations[size].pop();
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*handle = handle_lookup[ptr];
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} else {
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ptr = alloc_w_mmu_hdl(video0_fd, size, handle);
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handle_lookup[ptr] = *handle;
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size_lookup[ptr] = size;
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}
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lock.unlock();
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memset(ptr, 0, size);
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return ptr;
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}
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void MemoryManager::free(void *ptr) {
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lock.lock();
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cached_allocations[size_lookup[ptr]].push(ptr);
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lock.unlock();
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}
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MemoryManager::~MemoryManager() {
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for (auto& x : cached_allocations) {
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while (!x.second.empty()) {
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void *ptr = x.second.front();
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x.second.pop();
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LOGD("freeing cached allocation %p with size %d", ptr, size_lookup[ptr]);
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munmap(ptr, size_lookup[ptr]);
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release_fd(video0_fd, handle_lookup[ptr]);
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handle_lookup.erase(ptr);
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size_lookup.erase(ptr);
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}
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}
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}
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