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#include "../../include/codec_query/cuda.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;
}
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