[FFmpeg-devel] [PATCH 5/8] avcodec/nvenc: use dynamically loaded CUDA
Timo Rothenpieler
timo at rothenpieler.org
Wed Oct 19 15:00:33 EEST 2016
---
configure | 1 +
libavcodec/nvenc.c | 129 +++++++++--------------------------------------------
libavcodec/nvenc.h | 46 ++-----------------
3 files changed, 26 insertions(+), 150 deletions(-)
diff --git a/configure b/configure
index 8c5742f..78113e2 100755
--- a/configure
+++ b/configure
@@ -2692,6 +2692,7 @@ vaapi_encode_deps="vaapi"
hwupload_cuda_filter_deps="cuda"
scale_npp_filter_deps="cuda libnpp"
+nvenc_deps="cuda"
nvenc_deps_any="dlopen LoadLibrary"
nvenc_encoder_deps="nvenc"
h263_cuvid_decoder_deps="cuda cuvid"
diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 2505c3d..d71a445 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -21,60 +21,20 @@
#include "config.h"
-#if defined(_WIN32) || defined(__CYGWIN__)
-# define CUDA_LIBNAME "nvcuda.dll"
-# if ARCH_X86_64
-# define NVENC_LIBNAME "nvEncodeAPI64.dll"
-# else
-# define NVENC_LIBNAME "nvEncodeAPI.dll"
-# endif
-#else
-# define CUDA_LIBNAME "libcuda.so.1"
-# define NVENC_LIBNAME "libnvidia-encode.so.1"
-#endif
-
-#if defined(_WIN32)
-#include <windows.h>
-
-#define dlopen(filename, flags) LoadLibrary(TEXT(filename))
-#define dlsym(handle, symbol) GetProcAddress(handle, symbol)
-#define dlclose(handle) FreeLibrary(handle)
-#else
-#include <dlfcn.h>
-#endif
+#include "nvenc.h"
+#include "libavutil/hwcontext_cuda.h"
#include "libavutil/hwcontext.h"
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "internal.h"
-#include "nvenc.h"
#define NVENC_CAP 0x30
#define IS_CBR(rc) (rc == NV_ENC_PARAMS_RC_CBR || \
rc == NV_ENC_PARAMS_RC_2_PASS_QUALITY || \
rc == NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP)
-#define LOAD_LIBRARY(l, path) \
- do { \
- if (!((l) = dlopen(path, RTLD_LAZY))) { \
- av_log(avctx, AV_LOG_ERROR, \
- "Cannot load %s\n", \
- path); \
- return AVERROR_UNKNOWN; \
- } \
- } while (0)
-
-#define LOAD_SYMBOL(fun, lib, symbol) \
- do { \
- if (!((fun) = dlsym(lib, symbol))) { \
- av_log(avctx, AV_LOG_ERROR, \
- "Cannot load %s\n", \
- symbol); \
- return AVERROR_UNKNOWN; \
- } \
- } while (0)
-
const enum AVPixelFormat ff_nvenc_pix_fmts[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NV12,
@@ -83,9 +43,7 @@ const enum AVPixelFormat ff_nvenc_pix_fmts[] = {
AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_0RGB32,
AV_PIX_FMT_0BGR32,
-#if CONFIG_CUDA
AV_PIX_FMT_CUDA,
-#endif
AV_PIX_FMT_NONE
};
@@ -157,42 +115,19 @@ static av_cold int nvenc_load_libraries(AVCodecContext *avctx)
{
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
- PNVENCODEAPIGETMAXSUPPORTEDVERSION nvenc_get_max_ver;
- PNVENCODEAPICREATEINSTANCE nvenc_create_instance;
NVENCSTATUS err;
uint32_t nvenc_max_ver;
+ int ret;
-#if CONFIG_CUDA
- dl_fn->cu_init = cuInit;
- dl_fn->cu_device_get_count = cuDeviceGetCount;
- dl_fn->cu_device_get = cuDeviceGet;
- dl_fn->cu_device_get_name = cuDeviceGetName;
- dl_fn->cu_device_compute_capability = cuDeviceComputeCapability;
- dl_fn->cu_ctx_create = cuCtxCreate_v2;
- dl_fn->cu_ctx_pop_current = cuCtxPopCurrent_v2;
- dl_fn->cu_ctx_destroy = cuCtxDestroy_v2;
-#else
- LOAD_LIBRARY(dl_fn->cuda, CUDA_LIBNAME);
-
- LOAD_SYMBOL(dl_fn->cu_init, dl_fn->cuda, "cuInit");
- LOAD_SYMBOL(dl_fn->cu_device_get_count, dl_fn->cuda, "cuDeviceGetCount");
- LOAD_SYMBOL(dl_fn->cu_device_get, dl_fn->cuda, "cuDeviceGet");
- LOAD_SYMBOL(dl_fn->cu_device_get_name, dl_fn->cuda, "cuDeviceGetName");
- LOAD_SYMBOL(dl_fn->cu_device_compute_capability, dl_fn->cuda,
- "cuDeviceComputeCapability");
- LOAD_SYMBOL(dl_fn->cu_ctx_create, dl_fn->cuda, "cuCtxCreate_v2");
- LOAD_SYMBOL(dl_fn->cu_ctx_pop_current, dl_fn->cuda, "cuCtxPopCurrent_v2");
- LOAD_SYMBOL(dl_fn->cu_ctx_destroy, dl_fn->cuda, "cuCtxDestroy_v2");
-#endif
-
- LOAD_LIBRARY(dl_fn->nvenc, NVENC_LIBNAME);
+ ret = cuda_load_functions(&dl_fn->cuda_dl);
+ if (ret < 0)
+ return ret;
- LOAD_SYMBOL(nvenc_get_max_ver, dl_fn->nvenc,
- "NvEncodeAPIGetMaxSupportedVersion");
- LOAD_SYMBOL(nvenc_create_instance, dl_fn->nvenc,
- "NvEncodeAPICreateInstance");
+ ret = nvenc_load_functions(&dl_fn->nvenc_dl);
+ if (ret < 0)
+ return ret;
- err = nvenc_get_max_ver(&nvenc_max_ver);
+ err = dl_fn->nvenc_dl->NvEncodeAPIGetMaxSupportedVersion(&nvenc_max_ver);
if (err != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, err, "Failed to query nvenc max version");
@@ -208,7 +143,7 @@ static av_cold int nvenc_load_libraries(AVCodecContext *avctx)
dl_fn->nvenc_funcs.version = NV_ENCODE_API_FUNCTION_LIST_VER;
- err = nvenc_create_instance(&dl_fn->nvenc_funcs);
+ err = dl_fn->nvenc_dl->NvEncodeAPICreateInstance(&dl_fn->nvenc_funcs);
if (err != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, err, "Failed to create nvenc instance");
@@ -380,7 +315,7 @@ static av_cold int nvenc_check_device(AVCodecContext *avctx, int idx)
if (ctx->device == LIST_DEVICES)
loglevel = AV_LOG_INFO;
- cu_res = dl_fn->cu_device_get(&cu_device, idx);
+ cu_res = dl_fn->cuda_dl->cuDeviceGet(&cu_device, idx);
if (cu_res != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot access the CUDA device %d\n",
@@ -388,11 +323,11 @@ static av_cold int nvenc_check_device(AVCodecContext *avctx, int idx)
return -1;
}
- cu_res = dl_fn->cu_device_get_name(name, sizeof(name), cu_device);
+ cu_res = dl_fn->cuda_dl->cuDeviceGetName(name, sizeof(name), cu_device);
if (cu_res != CUDA_SUCCESS)
return -1;
- cu_res = dl_fn->cu_device_compute_capability(&major, &minor, cu_device);
+ cu_res = dl_fn->cuda_dl->cuDeviceComputeCapability(&major, &minor, cu_device);
if (cu_res != CUDA_SUCCESS)
return -1;
@@ -402,7 +337,7 @@ static av_cold int nvenc_check_device(AVCodecContext *avctx, int idx)
goto fail;
}
- cu_res = dl_fn->cu_ctx_create(&ctx->cu_context_internal, 0, cu_device);
+ cu_res = dl_fn->cuda_dl->cuCtxCreate(&ctx->cu_context_internal, 0, cu_device);
if (cu_res != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed creating CUDA context for NVENC: 0x%x\n", (int)cu_res);
goto fail;
@@ -410,7 +345,7 @@ static av_cold int nvenc_check_device(AVCodecContext *avctx, int idx)
ctx->cu_context = ctx->cu_context_internal;
- cu_res = dl_fn->cu_ctx_pop_current(&dummy);
+ cu_res = dl_fn->cuda_dl->cuCtxPopCurrent(&dummy);
if (cu_res != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed popping CUDA context: 0x%x\n", (int)cu_res);
goto fail2;
@@ -434,7 +369,7 @@ fail3:
ctx->nvencoder = NULL;
fail2:
- dl_fn->cu_ctx_destroy(ctx->cu_context_internal);
+ dl_fn->cuda_dl->cuCtxDestroy(ctx->cu_context_internal);
ctx->cu_context_internal = NULL;
fail:
@@ -458,7 +393,6 @@ static av_cold int nvenc_setup_device(AVCodecContext *avctx)
}
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
-#if CONFIG_CUDA
AVHWFramesContext *frames_ctx;
AVCUDADeviceContext *device_hwctx;
int ret;
@@ -480,19 +414,16 @@ static av_cold int nvenc_setup_device(AVCodecContext *avctx)
av_log(avctx, AV_LOG_FATAL, "Provided device doesn't support required NVENC features\n");
return ret;
}
-#else
- return AVERROR_BUG;
-#endif
} else {
int i, nb_devices = 0;
- if ((dl_fn->cu_init(0)) != CUDA_SUCCESS) {
+ if ((dl_fn->cuda_dl->cuInit(0)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot init CUDA\n");
return AVERROR_UNKNOWN;
}
- if ((dl_fn->cu_device_get_count(&nb_devices)) != CUDA_SUCCESS) {
+ if ((dl_fn->cuda_dl->cuDeviceGetCount(&nb_devices)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot enumerate the CUDA devices\n");
return AVERROR_UNKNOWN;
@@ -1269,30 +1200,14 @@ av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
ctx->nvencoder = NULL;
if (ctx->cu_context_internal)
- dl_fn->cu_ctx_destroy(ctx->cu_context_internal);
+ dl_fn->cuda_dl->cuCtxDestroy(ctx->cu_context_internal);
ctx->cu_context = ctx->cu_context_internal = NULL;
- if (dl_fn->nvenc)
- dlclose(dl_fn->nvenc);
- dl_fn->nvenc = NULL;
+ nvenc_free_functions(&dl_fn->nvenc_dl);
+ cuda_free_functions(&dl_fn->cuda_dl);
dl_fn->nvenc_device_count = 0;
-#if !CONFIG_CUDA
- if (dl_fn->cuda)
- dlclose(dl_fn->cuda);
- dl_fn->cuda = NULL;
-#endif
-
- dl_fn->cu_init = NULL;
- dl_fn->cu_device_get_count = NULL;
- dl_fn->cu_device_get = NULL;
- dl_fn->cu_device_get_name = NULL;
- dl_fn->cu_device_compute_capability = NULL;
- dl_fn->cu_ctx_create = NULL;
- dl_fn->cu_ctx_pop_current = NULL;
- dl_fn->cu_ctx_destroy = NULL;
-
av_log(avctx, AV_LOG_VERBOSE, "Nvenc unloaded\n");
return 0;
diff --git a/libavcodec/nvenc.h b/libavcodec/nvenc.h
index bad659a..5bc0cba 100644
--- a/libavcodec/nvenc.h
+++ b/libavcodec/nvenc.h
@@ -23,29 +23,12 @@
#include "config.h"
+#include "compat/cuda/dynlink_loader.h"
#include "libavutil/fifo.h"
#include "libavutil/opt.h"
#include "avcodec.h"
-#if CONFIG_CUDA
-#include "libavutil/hwcontext_cuda.h"
-#else
-
-#if defined(_WIN32)
-#define CUDAAPI __stdcall
-#else
-#define CUDAAPI
-#endif
-
-typedef enum cudaError_enum {
- CUDA_SUCCESS = 0
-} CUresult;
-typedef int CUdevice;
-typedef void* CUcontext;
-typedef void* CUdeviceptr;
-#endif
-
#define MAX_REGISTERED_FRAMES 64
typedef struct NvencSurface
@@ -64,33 +47,10 @@ typedef struct NvencSurface
int lockCount;
} NvencSurface;
-typedef CUresult(CUDAAPI *PCUINIT)(unsigned int Flags);
-typedef CUresult(CUDAAPI *PCUDEVICEGETCOUNT)(int *count);
-typedef CUresult(CUDAAPI *PCUDEVICEGET)(CUdevice *device, int ordinal);
-typedef CUresult(CUDAAPI *PCUDEVICEGETNAME)(char *name, int len, CUdevice dev);
-typedef CUresult(CUDAAPI *PCUDEVICECOMPUTECAPABILITY)(int *major, int *minor, CUdevice dev);
-typedef CUresult(CUDAAPI *PCUCTXCREATE)(CUcontext *pctx, unsigned int flags, CUdevice dev);
-typedef CUresult(CUDAAPI *PCUCTXPOPCURRENT)(CUcontext *pctx);
-typedef CUresult(CUDAAPI *PCUCTXDESTROY)(CUcontext ctx);
-
-typedef NVENCSTATUS (NVENCAPI *PNVENCODEAPIGETMAXSUPPORTEDVERSION)(uint32_t* version);
-typedef NVENCSTATUS (NVENCAPI *PNVENCODEAPICREATEINSTANCE)(NV_ENCODE_API_FUNCTION_LIST *functionList);
-
typedef struct NvencDynLoadFunctions
{
-#if !CONFIG_CUDA
- void *cuda;
-#endif
- void *nvenc;
-
- PCUINIT cu_init;
- PCUDEVICEGETCOUNT cu_device_get_count;
- PCUDEVICEGET cu_device_get;
- PCUDEVICEGETNAME cu_device_get_name;
- PCUDEVICECOMPUTECAPABILITY cu_device_compute_capability;
- PCUCTXCREATE cu_ctx_create;
- PCUCTXPOPCURRENT cu_ctx_pop_current;
- PCUCTXDESTROY cu_ctx_destroy;
+ CudaFunctions *cuda_dl;
+ NvencFunctions *nvenc_dl;
NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
int nvenc_device_count;
--
2.10.1
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