diff options
Diffstat (limited to 'src/codec_query/nvenc.c')
| -rw-r--r-- | src/codec_query/nvenc.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/codec_query/nvenc.c b/src/codec_query/nvenc.c new file mode 100644 index 0000000..0501851 --- /dev/null +++ b/src/codec_query/nvenc.c @@ -0,0 +1,235 @@ +#include "../../include/codec_query/nvenc.h" +#include "../../include/cuda.h" +#include "../../external/nvEncodeAPI.h" + +#include <dlfcn.h> +#include <stdio.h> +#include <string.h> + +static void* open_nvenc_library(void) { + dlerror(); /* clear */ + void *lib = dlopen("libnvidia-encode.so.1", RTLD_LAZY); + if(!lib) { + lib = dlopen("libnvidia-encode.so", RTLD_LAZY); + if(!lib) { + 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()); + return NULL; + } + } + return lib; +} + +static bool profile_is_h264(const GUID *profile_guid) { + const GUID *h264_guids[] = { + &NV_ENC_H264_PROFILE_BASELINE_GUID, + &NV_ENC_H264_PROFILE_MAIN_GUID, + &NV_ENC_H264_PROFILE_HIGH_GUID, + &NV_ENC_H264_PROFILE_PROGRESSIVE_HIGH_GUID, + &NV_ENC_H264_PROFILE_CONSTRAINED_HIGH_GUID + }; + + for(int i = 0; i < 5; ++i) { + if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0) + return true; + } + + return false; +} + +static bool profile_is_hevc(const GUID *profile_guid) { + const GUID *h264_guids[] = { + &NV_ENC_HEVC_PROFILE_MAIN_GUID, + }; + + for(int i = 0; i < 1; ++i) { + if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0) + return true; + } + + return false; +} + +static bool profile_is_hevc_10bit(const GUID *profile_guid) { + const GUID *h264_guids[] = { + &NV_ENC_HEVC_PROFILE_MAIN10_GUID, + }; + + for(int i = 0; i < 1; ++i) { + if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0) + return true; + } + + return false; +} + +static bool profile_is_av1(const GUID *profile_guid) { + const GUID *h264_guids[] = { + &NV_ENC_AV1_PROFILE_MAIN_GUID, + }; + + for(int i = 0; i < 1; ++i) { + if(memcmp(profile_guid, h264_guids[i], sizeof(GUID)) == 0) + return true; + } + + return false; +} + +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) { + bool success = false; + GUID *profile_guids = NULL; + + uint32_t profile_guid_count = 0; + if(function_list->nvEncGetEncodeProfileGUIDCount(nvenc_encoder, *encoder_guid, &profile_guid_count) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeProfileGUIDCount failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder)); + goto fail; + } + + if(profile_guid_count == 0) + goto fail; + + profile_guids = calloc(profile_guid_count, sizeof(GUID)); + if(!profile_guids) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to allocate %d guids\n", (int)profile_guid_count); + goto fail; + } + + if(function_list->nvEncGetEncodeProfileGUIDs(nvenc_encoder, *encoder_guid, profile_guids, profile_guid_count, &profile_guid_count) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeProfileGUIDs failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder)); + goto fail; + } + + for(uint32_t i = 0; i < profile_guid_count; ++i) { + if(profile_is_h264(&profile_guids[i])) { + supported_video_codecs->h264 = (gsr_supported_video_codec){ true, false }; + } else if(profile_is_hevc(&profile_guids[i])) { + supported_video_codecs->hevc = (gsr_supported_video_codec){ true, false }; + } else if(profile_is_hevc_10bit(&profile_guids[i])) { + supported_video_codecs->hevc_hdr = (gsr_supported_video_codec){ true, false }; + supported_video_codecs->hevc_10bit = (gsr_supported_video_codec){ true, false }; + } else if(profile_is_av1(&profile_guids[i])) { + supported_video_codecs->av1 = (gsr_supported_video_codec){ true, false }; + supported_video_codecs->av1_hdr = (gsr_supported_video_codec){ true, false }; + supported_video_codecs->av1_10bit = (gsr_supported_video_codec){ true, false }; + } + } + + success = true; + fail: + + if(profile_guids) + free(profile_guids); + + return success; +} + +static bool get_supported_video_codecs(const NV_ENCODE_API_FUNCTION_LIST *function_list, void *nvenc_encoder, gsr_supported_video_codecs *supported_video_codecs) { + bool success = false; + GUID *encoder_guids = NULL; + *supported_video_codecs = (gsr_supported_video_codecs){0}; + + uint32_t encode_guid_count = 0; + if(function_list->nvEncGetEncodeGUIDCount(nvenc_encoder, &encode_guid_count) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeGUIDCount failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder)); + goto fail; + } + + if(encode_guid_count == 0) + goto fail; + + encoder_guids = calloc(encode_guid_count, sizeof(GUID)); + if(!encoder_guids) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to allocate %d guids\n", (int)encode_guid_count); + goto fail; + } + + if(function_list->nvEncGetEncodeGUIDs(nvenc_encoder, encoder_guids, encode_guid_count, &encode_guid_count) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncGetEncodeGUIDs failed, error: %s\n", function_list->nvEncGetLastErrorString(nvenc_encoder)); + goto fail; + } + + for(uint32_t i = 0; i < encode_guid_count; ++i) { + encoder_get_supported_profiles(function_list, nvenc_encoder, &encoder_guids[i], supported_video_codecs); + } + + success = true; + fail: + + if(encoder_guids) + free(encoder_guids); + + return success; +} + +#define NVENCAPI_VERSION_470 (11 | (1 << 24)) +#define NVENCAPI_STRUCT_VERSION_470(ver) ((uint32_t)NVENCAPI_VERSION_470 | ((ver)<<16) | (0x7 << 28)) + +bool gsr_get_supported_video_codecs_nvenc(gsr_supported_video_codecs *video_codecs, bool cleanup) { + memset(video_codecs, 0, sizeof(*video_codecs)); + + bool success = false; + void *nvenc_lib = NULL; + void *nvenc_encoder = NULL; + gsr_cuda cuda; + memset(&cuda, 0, sizeof(cuda)); + + if(!gsr_cuda_load(&cuda, NULL, false)) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to load cuda\n"); + goto done; + } + + nvenc_lib = open_nvenc_library(); + if(!nvenc_lib) + goto done; + + typedef NVENCSTATUS NVENCAPI (*FUNC_NvEncodeAPICreateInstance)(NV_ENCODE_API_FUNCTION_LIST *functionList); + FUNC_NvEncodeAPICreateInstance nvEncodeAPICreateInstance = (FUNC_NvEncodeAPICreateInstance)dlsym(nvenc_lib, "NvEncodeAPICreateInstance"); + if(!nvEncodeAPICreateInstance) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: failed to find NvEncodeAPICreateInstance in libnvidia-encode.so\n"); + goto done; + } + + NV_ENCODE_API_FUNCTION_LIST function_list; + memset(&function_list, 0, sizeof(function_list)); + function_list.version = NVENCAPI_STRUCT_VERSION(2); + if(nvEncodeAPICreateInstance(&function_list) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncodeAPICreateInstance failed\n"); + goto done; + } + + NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params; + memset(¶ms, 0, sizeof(params)); + params.version = NVENCAPI_STRUCT_VERSION(1); + params.deviceType = NV_ENC_DEVICE_TYPE_CUDA; + params.device = cuda.cu_ctx; + params.apiVersion = NVENCAPI_VERSION; + if(function_list.nvEncOpenEncodeSessionEx(¶ms, &nvenc_encoder) != NV_ENC_SUCCESS) { + // Old nvidia gpus dont support the new nvenc api (which is required for av1). + // In such cases fallback to old api version if possible and try again. + function_list.version = NVENCAPI_STRUCT_VERSION_470(2); + if(nvEncodeAPICreateInstance(&function_list) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncodeAPICreateInstance (retry) failed\n"); + goto done; + } + + params.version = NVENCAPI_STRUCT_VERSION_470(1); + params.apiVersion = NVENCAPI_VERSION_470; + if(function_list.nvEncOpenEncodeSessionEx(¶ms, &nvenc_encoder) != NV_ENC_SUCCESS) { + fprintf(stderr, "gsr error: gsr_get_supported_video_codecs_nvenc: nvEncOpenEncodeSessionEx (retry) failed\n"); + goto done; + } + } + + success = get_supported_video_codecs(&function_list, nvenc_encoder, video_codecs); + + done: + if(cleanup) { + if(nvenc_encoder) + function_list.nvEncDestroyEncoder(nvenc_encoder); + if(nvenc_lib) + dlclose(nvenc_lib); + gsr_cuda_unload(&cuda); + } + + return success; +} |