c++实现nvidia打开摄像头推流rtsp
时间: 2023-03-22 08:00:51 浏览: 145
要在C语言中使用NVIDIA硬件编码器来打开摄像头并推送RTSP流,您需要使用NVIDIA的多媒体API库,即NVIDIA Video Codec SDK和NVIDIA CUDA Video Decoder SDK。
以下是一个简单的C代码示例,用于打开摄像头并使用NVIDIA硬件编码器将视频流推送到RTSP服务器:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <signal.h>
#include <cuda.h>
#include <nvEncodeAPI.h>
#include <nvUtils.h>
#define WIDTH 640
#define HEIGHT 480
#define FPS 30
#define BITRATE 1000000
// 初始化编码器参数
NVENCSTATUS InitEncoderParams(NV_ENCODE_API_FUNCTION_LIST* nvenc,
NV_ENC_INITIALIZE_PARAMS* initParams,
NV_ENC_CONFIG* encodeConfig,
int width, int height, int fps, int bitrate) {
memset(initParams, 0, sizeof(NV_ENC_INITIALIZE_PARAMS));
initParams->version = NV_ENC_INITIALIZE_PARAMS_VER;
initParams->encodeGUID = NV_ENC_CODEC_H264_GUID;
initParams->presetGUID = NV_ENC_PRESET_LOW_LATENCY_HQ_GUID;
initParams->encodeWidth = width;
initParams->encodeHeight = height;
initParams->maxEncodeWidth = width;
initParams->maxEncodeHeight = height;
initParams->frameRateNum = fps;
initParams->frameRateDen = 1;
initParams->enablePTD = 1;
initParams->reportSliceOffsets = 0;
initParams->enableSubframeWrite = 0;
initParams->enableExternalMEHint = 0;
initParams->encodeConfig = encodeConfig;
memset(encodeConfig, 0, sizeof(NV_ENC_CONFIG));
encodeConfig->version = NV_ENC_CONFIG_VER;
encodeConfig->profileGUID = NV_ENC_H264_PROFILE_BASELINE_GUID;
encodeConfig->gopLength = NVENC_INFINITE_GOPLENGTH;
encodeConfig->rcParams.rateControlMode = NV_ENC_PARAMS_RC_CBR;
encodeConfig->rcParams.averageBitRate = bitrate;
encodeConfig->rcParams.maxBitRate = bitrate;
encodeConfig->rcParams.vbvBufferSize = bitrate;
encodeConfig->rcParams.vbvInitialDelay = bitrate;
NVENCSTATUS nvStatus = nvenc->nvEncInitializeEncoder(initParams);
return nvStatus;
}
// 初始化编码器
NVENCSTATUS InitEncoder(NV_ENCODE_API_FUNCTION_LIST* nvenc,
NV_ENC_INITIALIZE_PARAMS* initParams,
NV_ENC_CONFIG* encodeConfig,
NV_ENC_BUFFER_FORMAT inputFormat,
NV_ENC_BUFFER_FORMAT outputFormat,
NV_ENC_BUFFER_FORMAT dynamicFormat,
int* numBuffers,
NV_ENC_INPUT_RESOURCE_TYPE inputType,
NV_ENC_OUTPUT_PTR* outputBuffer,
NV_ENC_INPUT_PTR* inputBuffer,
NV_ENC_REGISTERED_PTR* registeredResource,
NV_ENC_REGISTERED_PTR* registeredResourceDyn) {
NVENCSTATUS nvStatus = InitEncoderParams(nvenc, initParams, encodeConfig, WIDTH, HEIGHT, FPS, BITRATE);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to initialize encoder.\n");
return nvStatus;
}
nvStatus = nvenc->nvEncCreateInputBuffer(initParams->encodeGUID, initParams->encodeWidth, initParams->encodeHeight, inputBuffer);
if (nvStatus != NV_ENC_SUCCESS) {