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https://repo.dec05eba.com/gpu-screen-recorder
synced 2026-04-15 06:44:53 +09:00
260 lines
10 KiB
C
260 lines
10 KiB
C
#include "../../include/codec_query/nvenc.h"
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#include "../../include/cuda.h"
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#include "../../external/nvEncodeAPI.h"
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#include <dlfcn.h>
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#include <stdio.h>
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#include <string.h>
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#define NVENCAPI_MAJOR_VERSION_470 11
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#define NVENCAPI_MINOR_VERSION_470 1
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#define NVENCAPI_VERSION_470 (NVENCAPI_MAJOR_VERSION_470 | (NVENCAPI_MINOR_VERSION_470 << 24))
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#define NVENCAPI_STRUCT_VERSION_CUSTOM(nvenc_api_version, struct_version) ((uint32_t)(nvenc_api_version) | ((struct_version)<<16) | (0x7 << 28))
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static void* open_nvenc_library(void) {
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dlerror(); /* clear */
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void *lib = dlopen("libnvidia-encode.so.1", RTLD_LAZY);
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if(!lib) {
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lib = dlopen("libnvidia-encode.so", RTLD_LAZY);
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if(!lib) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc failed: failed to load libnvidia-encode.so/libnvidia-encode.so.1, error: %s\n", dlerror());
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return NULL;
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}
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}
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return lib;
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}
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static bool profile_is_h264(const GUID *profile_guid) {
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const GUID *h264_guids[] = {
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&NV_ENC_H264_PROFILE_BASELINE_GUID,
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&NV_ENC_H264_PROFILE_MAIN_GUID,
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&NV_ENC_H264_PROFILE_HIGH_GUID,
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&NV_ENC_H264_PROFILE_PROGRESSIVE_HIGH_GUID,
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&NV_ENC_H264_PROFILE_CONSTRAINED_HIGH_GUID
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};
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for(int i = 0; i < 5; ++i) {
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if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0)
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return true;
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}
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return false;
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}
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static bool profile_is_hevc(const GUID *profile_guid) {
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const GUID *h264_guids[] = {
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&NV_ENC_HEVC_PROFILE_MAIN_GUID,
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};
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for(int i = 0; i < 1; ++i) {
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if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0)
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return true;
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}
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return false;
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}
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static bool profile_is_hevc_10bit(const GUID *profile_guid) {
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const GUID *h264_guids[] = {
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&NV_ENC_HEVC_PROFILE_MAIN10_GUID,
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};
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for(int i = 0; i < 1; ++i) {
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if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0)
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return true;
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}
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return false;
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}
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static bool profile_is_av1(const GUID *profile_guid) {
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const GUID *h264_guids[] = {
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&NV_ENC_AV1_PROFILE_MAIN_GUID,
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};
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for(int i = 0; i < 1; ++i) {
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if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0)
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return true;
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}
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return false;
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}
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/* Returns 0 on error */
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static int nvenc_get_encoding_capability(const NV_ENCODE_API_FUNCTION_LIST *function_list, void *nvenc_encoder, const GUID *encode_guid, uint32_t nvenc_api_version, NV_ENC_CAPS cap) {
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NV_ENC_CAPS_PARAM param = {
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.version = NVENCAPI_STRUCT_VERSION_CUSTOM(nvenc_api_version, 1),
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.capsToQuery = cap
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};
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int value = 0;
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if(function_list->nvEncGetEncodeCaps(nvenc_encoder, *encode_guid, ¶m, &value) != NV_ENC_SUCCESS)
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return 0;
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return value;
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}
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static vec2i encoder_get_max_resolution(const NV_ENCODE_API_FUNCTION_LIST *function_list, void *nvenc_encoder, const GUID *encode_guid, uint32_t nvenc_api_version) {
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return (vec2i){
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.x = nvenc_get_encoding_capability(function_list, nvenc_encoder, encode_guid, nvenc_api_version, NV_ENC_CAPS_WIDTH_MAX),
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.y = nvenc_get_encoding_capability(function_list, nvenc_encoder, encode_guid, nvenc_api_version, NV_ENC_CAPS_HEIGHT_MAX),
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};
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}
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static bool encoder_get_supported_profiles(const NV_ENCODE_API_FUNCTION_LIST *function_list, void *nvenc_encoder, const GUID *encoder_guid, gsr_supported_video_codecs *supported_video_codecs, uint32_t nvenc_api_version) {
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bool success = false;
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GUID *profile_guids = NULL;
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uint32_t profile_guid_count = 0;
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if(function_list->nvEncGetEncodeProfileGUIDCount(nvenc_encoder, *encoder_guid, &profile_guid_count) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeProfileGUIDCount failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder));
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goto fail;
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}
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if(profile_guid_count == 0)
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goto fail;
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profile_guids = calloc(profile_guid_count, sizeof(GUID));
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if(!profile_guids) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to allocate %d guids\n", (int)profile_guid_count);
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goto fail;
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}
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if(function_list->nvEncGetEncodeProfileGUIDs(nvenc_encoder, *encoder_guid, profile_guids, profile_guid_count, &profile_guid_count) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeProfileGUIDs failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder));
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goto fail;
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}
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const vec2i max_resolution = encoder_get_max_resolution(function_list, nvenc_encoder, encoder_guid, nvenc_api_version);
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for(uint32_t i = 0; i < profile_guid_count; ++i) {
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if(profile_is_h264(&profile_guids[i])) {
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supported_video_codecs->h264 = (gsr_supported_video_codec){ true, false, max_resolution };
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} else if(profile_is_hevc(&profile_guids[i])) {
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supported_video_codecs->hevc = (gsr_supported_video_codec){ true, false, max_resolution };
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} else if(profile_is_hevc_10bit(&profile_guids[i])) {
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supported_video_codecs->hevc_hdr = (gsr_supported_video_codec){ true, false, max_resolution };
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supported_video_codecs->hevc_10bit = (gsr_supported_video_codec){ true, false, max_resolution };
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} else if(profile_is_av1(&profile_guids[i])) {
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supported_video_codecs->av1 = (gsr_supported_video_codec){ true, false, max_resolution };
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supported_video_codecs->av1_hdr = (gsr_supported_video_codec){ true, false, max_resolution };
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supported_video_codecs->av1_10bit = (gsr_supported_video_codec){ true, false, max_resolution };
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}
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}
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success = true;
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fail:
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if(profile_guids)
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free(profile_guids);
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return success;
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}
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static bool get_supported_video_codecs(const NV_ENCODE_API_FUNCTION_LIST *function_list, void *nvenc_encoder, gsr_supported_video_codecs *supported_video_codecs, uint32_t nvenc_api_version) {
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bool success = false;
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GUID *encoder_guids = NULL;
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*supported_video_codecs = (gsr_supported_video_codecs){0};
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uint32_t encode_guid_count = 0;
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if(function_list->nvEncGetEncodeGUIDCount(nvenc_encoder, &encode_guid_count) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeGUIDCount failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder));
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goto fail;
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}
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if(encode_guid_count == 0)
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goto fail;
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encoder_guids = calloc(encode_guid_count, sizeof(GUID));
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if(!encoder_guids) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to allocate %d guids\n", (int)encode_guid_count);
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goto fail;
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}
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if(function_list->nvEncGetEncodeGUIDs(nvenc_encoder, encoder_guids, encode_guid_count, &encode_guid_count) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeGUIDs failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder));
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goto fail;
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}
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for(uint32_t i = 0; i < encode_guid_count; ++i) {
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encoder_get_supported_profiles(function_list, nvenc_encoder, &encoder_guids[i], supported_video_codecs, nvenc_api_version);
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}
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success = true;
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fail:
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if(encoder_guids)
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free(encoder_guids);
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return success;
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}
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bool gsr_get_supported_video_codecs_nvenc(gsr_supported_video_codecs *video_codecs, bool cleanup) {
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memset(video_codecs, 0, sizeof(*video_codecs));
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bool success = false;
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void *nvenc_lib = NULL;
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void *nvenc_encoder = NULL;
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gsr_cuda cuda;
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memset(&cuda, 0, sizeof(cuda));
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if(!gsr_cuda_load(&cuda, NULL, false)) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to load cuda\n");
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goto done;
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}
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nvenc_lib = open_nvenc_library();
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if(!nvenc_lib)
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goto done;
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typedef NVENCSTATUS NVENCAPI (*FUNC_NvEncodeAPICreateInstance)(NV_ENCODE_API_FUNCTION_LIST *functionList);
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FUNC_NvEncodeAPICreateInstance nvEncodeAPICreateInstance = (FUNC_NvEncodeAPICreateInstance)dlsym(nvenc_lib, "NvEncodeAPICreateInstance");
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if(!nvEncodeAPICreateInstance) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to find NvEncodeAPICreateInstance in libnvidia-encode.so\n");
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goto done;
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}
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NV_ENCODE_API_FUNCTION_LIST function_list;
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memset(&function_list, 0, sizeof(function_list));
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function_list.version = NVENCAPI_STRUCT_VERSION(2);
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if(nvEncodeAPICreateInstance(&function_list) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncodeAPICreateInstance failed\n");
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goto done;
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}
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NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params;
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memset(¶ms, 0, sizeof(params));
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params.version = NVENCAPI_STRUCT_VERSION(1);
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params.deviceType = NV_ENC_DEVICE_TYPE_CUDA;
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params.device = cuda.cu_ctx;
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params.apiVersion = NVENCAPI_VERSION;
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if(function_list.nvEncOpenEncodeSessionEx(¶ms, &nvenc_encoder) != NV_ENC_SUCCESS) {
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// Old nvidia gpus dont support the new nvenc api (which is required for av1).
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// In such cases fallback to old api version if possible and try again.
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function_list.version = NVENCAPI_STRUCT_VERSION_CUSTOM(NVENCAPI_VERSION_470, 2);
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if(nvEncodeAPICreateInstance(&function_list) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncodeAPICreateInstance (retry) failed\n");
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goto done;
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}
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params.version = NVENCAPI_STRUCT_VERSION_CUSTOM(NVENCAPI_VERSION_470, 1);
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params.apiVersion = NVENCAPI_VERSION_470;
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if(function_list.nvEncOpenEncodeSessionEx(¶ms, &nvenc_encoder) != NV_ENC_SUCCESS) {
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fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncOpenEncodeSessionEx (retry) failed\n");
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goto done;
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}
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}
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success = get_supported_video_codecs(&function_list, nvenc_encoder, video_codecs, params.apiVersion);
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done:
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if(cleanup) {
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if(nvenc_encoder)
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function_list.nvEncDestroyEncoder(nvenc_encoder);
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if(nvenc_lib)
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dlclose(nvenc_lib);
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gsr_cuda_unload(&cuda);
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}
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return success;
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}
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