diff options
Diffstat (limited to 'include/NvFBCLibrary.hpp')
| -rw-r--r-- | include/NvFBCLibrary.hpp | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/include/NvFBCLibrary.hpp b/include/NvFBCLibrary.hpp deleted file mode 100644 index 19b9bcc..0000000 --- a/include/NvFBCLibrary.hpp +++ /dev/null @@ -1,278 +0,0 @@ -#pragma once - -#include "../external/NvFBC.h" -#include <dlfcn.h> -#include <string.h> -#include <stdio.h> -#include <string.h> - -class NvFBCLibrary { -public: - ~NvFBCLibrary() { - if(fbc_handle_created) { - NVFBC_DESTROY_CAPTURE_SESSION_PARAMS destroy_capture_params; - memset(&destroy_capture_params, 0, sizeof(destroy_capture_params)); - destroy_capture_params.dwVersion = NVFBC_DESTROY_CAPTURE_SESSION_PARAMS_VER; - nv_fbc_function_list.nvFBCDestroyCaptureSession(nv_fbc_handle, &destroy_capture_params); - - NVFBC_DESTROY_HANDLE_PARAMS destroy_params; - memset(&destroy_params, 0, sizeof(destroy_params)); - destroy_params.dwVersion = NVFBC_DESTROY_HANDLE_PARAMS_VER; - nv_fbc_function_list.nvFBCDestroyHandle(nv_fbc_handle, &destroy_params); - } - - if(library) - dlclose(library); - } - - bool load() { - if(library) - return true; - - dlerror(); // clear - void *lib = dlopen("libnvidia-fbc.so.1", RTLD_LAZY); - if(!lib) { - fprintf(stderr, "Error: failed to load libnvidia-fbc.so.1, error: %s\n", dlerror()); - return false; - } - - nv_fbc_create_instance = (PNVFBCCREATEINSTANCE)dlsym(lib, "NvFBCCreateInstance"); - if(!nv_fbc_create_instance) { - fprintf(stderr, "Error: unable to resolve symbol 'NvFBCCreateInstance'\n"); - dlclose(lib); - return false; - } - - memset(&nv_fbc_function_list, 0, sizeof(nv_fbc_function_list)); - nv_fbc_function_list.dwVersion = NVFBC_VERSION; - NVFBCSTATUS status = nv_fbc_create_instance(&nv_fbc_function_list); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: failed to create NvFBC instance (status: %d)\n", status); - dlclose(lib); - return false; - } - - library = lib; - return true; - } - - // If |display_to_capture| is "screen", then the entire x11 screen is captured (all displays). - bool create(const char *display_to_capture, uint32_t fps, /*out*/ uint32_t *display_width, /*out*/ uint32_t *display_height, uint32_t x = 0, uint32_t y = 0, uint32_t width = 0, uint32_t height = 0, bool direct_capture = false) { - if(!library || !display_to_capture || !display_width || !display_height || fbc_handle_created) - return false; - - const bool capture_region = (x > 0 || y > 0 || width > 0 || height > 0); - - NVFBCSTATUS status; - NVFBC_TRACKING_TYPE tracking_type; - bool capture_session_created = false; - uint32_t output_id = 0; - fbc_handle_created = false; - - NVFBC_CREATE_HANDLE_PARAMS create_params; - memset(&create_params, 0, sizeof(create_params)); - create_params.dwVersion = NVFBC_CREATE_HANDLE_PARAMS_VER; - - status = nv_fbc_function_list.nvFBCCreateHandle(&nv_fbc_handle, &create_params); - if(status != NVFBC_SUCCESS) { - // Reverse engineering for interoperability - const uint8_t enable_key[] = { 0xac, 0x10, 0xc9, 0x2e, 0xa5, 0xe6, 0x87, 0x4f, 0x8f, 0x4b, 0xf4, 0x61, 0xf8, 0x56, 0x27, 0xe9 }; - create_params.privateData = enable_key; - create_params.privateDataSize = 16; - - status = nv_fbc_function_list.nvFBCCreateHandle(&nv_fbc_handle, &create_params); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: %s\n", nv_fbc_function_list.nvFBCGetLastErrorStr(nv_fbc_handle)); - return false; - } - } - fbc_handle_created = true; - - NVFBC_GET_STATUS_PARAMS status_params; - memset(&status_params, 0, sizeof(status_params)); - status_params.dwVersion = NVFBC_GET_STATUS_PARAMS_VER; - - status = nv_fbc_function_list.nvFBCGetStatus(nv_fbc_handle, &status_params); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: %s\n", nv_fbc_function_list.nvFBCGetLastErrorStr(nv_fbc_handle)); - goto error_cleanup; - } - - if(status_params.bCanCreateNow == NVFBC_FALSE) { - fprintf(stderr, "Error: it's not possible to create a capture session on this system\n"); - goto error_cleanup; - } - - tracking_type = strcmp(display_to_capture, "screen") == 0 ? NVFBC_TRACKING_SCREEN : NVFBC_TRACKING_OUTPUT; - if(tracking_type == NVFBC_TRACKING_OUTPUT) { - if(!status_params.bXRandRAvailable) { - fprintf(stderr, "Error: the xrandr extension is not available\n"); - goto error_cleanup; - } - - if(status_params.bInModeset) { - fprintf(stderr, "Error: the x server is in modeset, unable to record\n"); - goto error_cleanup; - } - - output_id = get_output_id_from_display_name(status_params.outputs, status_params.dwOutputNum, display_to_capture, display_width, display_height); - if(output_id == 0) { - fprintf(stderr, "Error: display '%s' not found\n", display_to_capture); - goto error_cleanup; - } - } else { - *display_width = status_params.screenSize.w; - *display_height = status_params.screenSize.h; - } - - NVFBC_CREATE_CAPTURE_SESSION_PARAMS create_capture_params; - memset(&create_capture_params, 0, sizeof(create_capture_params)); - create_capture_params.dwVersion = NVFBC_CREATE_CAPTURE_SESSION_PARAMS_VER; - create_capture_params.eCaptureType = NVFBC_CAPTURE_SHARED_CUDA; - create_capture_params.bWithCursor = (!direct_capture || driver_supports_direct_capture_cursor()) ? NVFBC_TRUE : NVFBC_FALSE; - if(capture_region) { - create_capture_params.captureBox = { x, y, width, height }; - *display_width = width; - *display_height = height; - } - create_capture_params.eTrackingType = tracking_type; - create_capture_params.dwSamplingRateMs = 1000 / fps; - create_capture_params.bAllowDirectCapture = direct_capture ? NVFBC_TRUE : NVFBC_FALSE; - create_capture_params.bPushModel = direct_capture ? NVFBC_TRUE : NVFBC_FALSE; - if(tracking_type == NVFBC_TRACKING_OUTPUT) - create_capture_params.dwOutputId = output_id; - - status = nv_fbc_function_list.nvFBCCreateCaptureSession(nv_fbc_handle, &create_capture_params); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: %s\n", nv_fbc_function_list.nvFBCGetLastErrorStr(nv_fbc_handle)); - goto error_cleanup; - } - capture_session_created = true; - - NVFBC_TOCUDA_SETUP_PARAMS setup_params; - memset(&setup_params, 0, sizeof(setup_params)); - setup_params.dwVersion = NVFBC_TOCUDA_SETUP_PARAMS_VER; - setup_params.eBufferFormat = NVFBC_BUFFER_FORMAT_BGRA; - - status = nv_fbc_function_list.nvFBCToCudaSetUp(nv_fbc_handle, &setup_params); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: %s\n", nv_fbc_function_list.nvFBCGetLastErrorStr(nv_fbc_handle)); - goto error_cleanup; - } - - return true; - - error_cleanup: - if(fbc_handle_created) { - if(capture_session_created) { - NVFBC_DESTROY_CAPTURE_SESSION_PARAMS destroy_capture_params; - memset(&destroy_capture_params, 0, sizeof(destroy_capture_params)); - destroy_capture_params.dwVersion = NVFBC_DESTROY_CAPTURE_SESSION_PARAMS_VER; - nv_fbc_function_list.nvFBCDestroyCaptureSession(nv_fbc_handle, &destroy_capture_params); - } - - NVFBC_DESTROY_HANDLE_PARAMS destroy_params; - memset(&destroy_params, 0, sizeof(destroy_params)); - destroy_params.dwVersion = NVFBC_DESTROY_HANDLE_PARAMS_VER; - nv_fbc_function_list.nvFBCDestroyHandle(nv_fbc_handle, &destroy_params); - fbc_handle_created = false; - } - output_id = 0; - return false; - } - - bool capture(/*out*/ void *cu_device_ptr, uint32_t *byte_size) { - if(!library || !fbc_handle_created || !cu_device_ptr || !byte_size) - return false; - - NVFBCSTATUS status; - NVFBC_FRAME_GRAB_INFO frame_info; - memset(&frame_info, 0, sizeof(frame_info)); - - NVFBC_TOCUDA_GRAB_FRAME_PARAMS grab_params; - memset(&grab_params, 0, sizeof(grab_params)); - grab_params.dwVersion = NVFBC_TOCUDA_GRAB_FRAME_PARAMS_VER; - grab_params.dwFlags = NVFBC_TOCUDA_GRAB_FLAGS_NOWAIT | NVFBC_TOCUDA_GRAB_FLAGS_FORCE_REFRESH; - grab_params.pFrameGrabInfo = &frame_info; - grab_params.pCUDADeviceBuffer = cu_device_ptr; - - status = nv_fbc_function_list.nvFBCToCudaGrabFrame(nv_fbc_handle, &grab_params); - if(status != NVFBC_SUCCESS) { - fprintf(stderr, "Error: %s\n", nv_fbc_function_list.nvFBCGetLastErrorStr(nv_fbc_handle)); - return false; - } - - *byte_size = frame_info.dwByteSize; - // TODO: Check bIsNewFrame - // TODO: Check dwWidth and dwHeight and update size in video output in ffmpeg. This can happen when xrandr is used to change monitor resolution - - return true; - } -private: - static char to_upper(char c) { - if(c >= 'a' && c <= 'z') - return c - 32; - else - return c; - } - - static bool strcase_equals(const char *str1, const char *str2) { - for(;;) { - char c1 = to_upper(*str1); - char c2 = to_upper(*str2); - if(c1 != c2) - return false; - if(c1 == '\0' || c2 == '\0') - return true; - ++str1; - ++str2; - } - } - - // Returns 0 on failure - static uint32_t get_output_id_from_display_name(NVFBC_RANDR_OUTPUT_INFO *outputs, uint32_t num_outputs, const char *display_name, uint32_t *display_width, uint32_t *display_height) { - if(!outputs) - return 0; - - for(uint32_t i = 0; i < num_outputs; ++i) { - if(strcase_equals(outputs[i].name, display_name)) { - *display_width = outputs[i].trackedBox.w; - *display_height = outputs[i].trackedBox.h; - return outputs[i].dwId; - } - } - - return 0; - } - - // TODO: Test with optimus and open kernel modules - static bool driver_supports_direct_capture_cursor() { - FILE *f = fopen("/proc/driver/nvidia/version", "rb"); - if(!f) - return false; - - char buffer[2048]; - size_t bytes_read = fread(buffer, 1, sizeof(buffer) - 1, f); - buffer[bytes_read] = '\0'; - - bool supports_cursor = false; - const char *p = strstr(buffer, "Kernel Module"); - if(p) { - p += 13; - int driver_major_version = 0, driver_minor_version = 0; - if(sscanf(p, "%d.%d", &driver_major_version, &driver_minor_version) == 2) { - if(driver_major_version > 515 || (driver_major_version == 515 && driver_minor_version >= 57)) - supports_cursor = true; - } - } - - fclose(f); - return supports_cursor; - } -private: - void *library = nullptr; - PNVFBCCREATEINSTANCE nv_fbc_create_instance = nullptr; - NVFBC_API_FUNCTION_LIST nv_fbc_function_list; - NVFBC_SESSION_HANDLE nv_fbc_handle; - bool fbc_handle_created = false; -}; |