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117 lines
3.4 KiB
117 lines
3.4 KiB
// Copyright (C) 2019 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "host-common/MediaCudaDriverHelper.h"
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#include <cstdint>
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#include <string>
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#include <vector>
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#include "android/main-emugl.h"
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN 1
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#include <windows.h>
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#include <winioctl.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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extern "C" {
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#define INIT_CUDA_GL 1
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#include "host-common/dynlink_cuda.h"
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#include "host-common/dynlink_cudaGL.h"
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#include "host-common/dynlink_nvcuvid.h"
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}
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#define MEDIA_CUDA_DEBUG 0
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#if MEDIA_CUDA_DEBUG
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#define CUDA_DPRINT(fmt, ...) \
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fprintf(stderr, "media-cuda--driver-helper: %s:%d " fmt "\n", __func__, \
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__LINE__, ##__VA_ARGS__);
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#else
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#define CUDA_DPRINT(fmt, ...)
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#endif
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#define NVDEC_API_CALL(cuvidAPI) \
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do { \
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CUresult errorCode = cuvidAPI; \
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if (errorCode != CUDA_SUCCESS) { \
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CUDA_DPRINT("%s failed with error code %d\n", #cuvidAPI, \
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(int)errorCode); \
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} \
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} while (0)
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namespace android {
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namespace emulation {
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bool MediaCudaDriverHelper::s_isCudaInitialized = false;
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bool MediaCudaDriverHelper::initCudaDrivers() {
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if (s_isCudaInitialized) {
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return true;
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}
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#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
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typedef HMODULE CUDADRIVER;
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#else
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typedef void* CUDADRIVER;
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#endif
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CUDADRIVER hHandleDriver = 0;
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int initResult = CUDA_SUCCESS;
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// try 3 times: especially important after reboot
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// the cuda ko might not be loaded in the firs try
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for (int i = 0; i < 3; ++ i) {
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initResult = cuInit(0, __CUDA_API_VERSION, hHandleDriver);
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if (CUDA_SUCCESS == initResult) {
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break;
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}
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}
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if (initResult != CUDA_SUCCESS) {
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fprintf(stderr,
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"Failed to call cuInit, cannot use nvidia cuvid decoder for "
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"h264 stream\n");
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return false;
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}
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if (CUDA_SUCCESS != cuvidInit(0)) {
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fprintf(stderr,
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"Failed to call cuvidInit, cannot use nvidia cuvid decoder for "
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"h264 stream\n");
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return false;
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}
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int numGpuCards = 0;
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CUresult myres = cuDeviceGetCount(&numGpuCards);
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if (myres != CUDA_SUCCESS) {
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CUDA_DPRINT(
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"Failed to get number of GPU cards installed on host; error "
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"code %d",
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(int)myres);
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return false;
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}
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if (numGpuCards <= 0) {
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CUDA_DPRINT("There are no nvidia GPU cards on this host.");
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return false;
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}
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// lukily, we get cuda initialized.
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s_isCudaInitialized = true;
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return true;
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}
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} // namespace emulation
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} // namespace android
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