diff options
Diffstat (limited to 'src/codec_query/vulkan.c')
| -rw-r--r-- | src/codec_query/vulkan.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/codec_query/vulkan.c b/src/codec_query/vulkan.c new file mode 100644 index 0000000..c19c4f7 --- /dev/null +++ b/src/codec_query/vulkan.c @@ -0,0 +1,153 @@ +#include "../../include/codec_query/vulkan.h" + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <xf86drm.h> +#include <vulkan/vulkan.h> + +#define MAX_PHYSICAL_DEVICES 32 + +static const char *required_device_extensions[] = { + "VK_KHR_external_memory_fd", + "VK_KHR_external_semaphore_fd", + "VK_KHR_video_encode_queue", + "VK_KHR_video_queue", + "VK_KHR_video_maintenance1", + "VK_EXT_external_memory_dma_buf", + "VK_EXT_external_memory_host", + "VK_EXT_image_drm_format_modifier" +}; +static int num_required_device_extensions = 8; + +bool gsr_get_supported_video_codecs_vulkan(gsr_supported_video_codecs *video_codecs, const char *card_path, bool cleanup) { + memset(video_codecs, 0, sizeof(*video_codecs)); +#if 0 + bool success = false; + VkInstance instance = NULL; + VkPhysicalDevice physical_devices[MAX_PHYSICAL_DEVICES]; + VkDevice device = NULL; + VkExtensionProperties *device_extensions = NULL; + + const VkApplicationInfo app_info = { + .sType = VK_STRUCTURE_TYPE_APPLICATION_INFO, + .pApplicationName = "GPU Screen Recorder", + .applicationVersion = VK_MAKE_VERSION(1, 0, 0), + .pEngineName = "GPU Screen Recorder", + .engineVersion = VK_MAKE_VERSION(1, 0, 0), + .apiVersion = VK_API_VERSION_1_3, + }; + + const VkInstanceCreateInfo instance_create_info = { + .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO, + .pApplicationInfo = &app_info + }; + + if(vkCreateInstance(&instance_create_info, NULL, &instance) != VK_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkCreateInstance failed\n"); + goto done; + } + + uint32_t num_devices = 0; + if(vkEnumeratePhysicalDevices(instance, &num_devices, NULL) != VK_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumeratePhysicalDevices (query num devices) failed\n"); + goto done; + } + + if(num_devices == 0) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: no vulkan capable device found\n"); + goto done; + } + + if(num_devices > MAX_PHYSICAL_DEVICES) + num_devices = MAX_PHYSICAL_DEVICES; + + if(vkEnumeratePhysicalDevices(instance, &num_devices, physical_devices) != VK_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumeratePhysicalDevices (get data) failed\n"); + goto done; + } + + VkPhysicalDevice physical_device = NULL; + char device_card_path[128]; + for(uint32_t i = 0; i < num_devices; ++i) { + VkPhysicalDeviceDrmPropertiesEXT device_drm_properties = { + .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRM_PROPERTIES_EXT + }; + + VkPhysicalDeviceProperties2 device_properties = { + .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2, + .pNext = &device_drm_properties + }; + vkGetPhysicalDeviceProperties2(physical_devices[i], &device_properties); + + if(!device_drm_properties.hasPrimary) + continue; + + snprintf(device_card_path, sizeof(device_card_path), DRM_DEV_NAME, DRM_DIR_NAME, (int)device_drm_properties.primaryMinor); + if(strcmp(device_card_path, card_path) == 0) { + physical_device = physical_devices[i]; + break; + } + } + + if(!physical_device) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: failed to find a vulkan device that matches opengl device %s\n", card_path); + goto done; + } + + const VkDeviceCreateInfo device_create_info = { + .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO, + .enabledExtensionCount = num_required_device_extensions, + .ppEnabledExtensionNames = required_device_extensions + }; + + if(vkCreateDevice(physical_device, &device_create_info, NULL, &device) != VK_SUCCESS) { + //fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkCreateDevice failed. Device %s likely doesn't support vulkan video encoding\n", card_path); + goto done; + } + + uint32_t num_device_extensions = 0; + if(vkEnumerateDeviceExtensionProperties(physical_device, NULL, &num_device_extensions, NULL) != VK_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumerateDeviceExtensionProperties (query num device extensions) failed\n"); + goto done; + } + + device_extensions = calloc(num_device_extensions, sizeof(VkExtensionProperties)); + if(!device_extensions) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: failed to allocate %d device extensions\n", num_device_extensions); + goto done; + } + + if(vkEnumerateDeviceExtensionProperties(physical_device, NULL, &num_device_extensions, device_extensions) != VK_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_vulkan: vkEnumerateDeviceExtensionProperties (get data) failed\n"); + goto done; + } + + for(uint32_t i = 0; i < num_device_extensions; ++i) { + if(strcmp(device_extensions[i].extensionName, "VK_KHR_video_encode_h264") == 0) { + video_codecs->h264 = true; + } else if(strcmp(device_extensions[i].extensionName, "VK_KHR_video_encode_h265") == 0) { + // TODO: Verify if 10bit and hdr are actually supported + video_codecs->hevc = true; + video_codecs->hevc_10bit = true; + video_codecs->hevc_hdr = true; + } + } + + success = true; + + done: + if(cleanup) { + if(device) + vkDestroyDevice(device, NULL); + if(instance) + vkDestroyInstance(instance, NULL); + } + if(device_extensions) + free(device_extensions); + return success; +#else + video_codecs->h264 = true; + return true; +#endif +} |