写一个nvidia c++视频编码代码
时间: 2023-03-15 17:59:31 浏览: 68
我可以为你提供一个基于NVIDIA C的视频编码代码的示例:#include <stdio.h>
#include <nvEncodeAPI.h>int main(int argc, char *argv[])
{
NV_ENCODE_API_FUNCTION_LIST encodeAPI;
NV_ENC_INITIALIZE_PARAMS initializeParams;
NV_ENC_CONFIG encodeConfig;
NV_ENCODE_API_CALL_BACKS encodeCallbacks;
NV_ENC_HANDLE encoder;
uint32_t width = 1280, height = 720;
uint32_t maxEncodeWidth, maxEncodeHeight;
NV_ENC_PRESET_CONFIG presetConfig;
memset(&encodeAPI, 0, sizeof(encodeAPI));
memset(&initializeParams, 0, sizeof(initializeParams));
memset(&encodeConfig, 0, sizeof(encodeConfig));
memset(&encodeCallbacks, 0, sizeof(encodeCallbacks));
memset(&encoder, 0, sizeof(encoder));
memset(&presetConfig, 0, sizeof(presetConfig));
// Initialize the encode API
NVENCSTATUS nvStatus = NvEncodeAPICreateInstance(&encodeAPI);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to initialize the encoder API.\n");
return 1;
}
// Get the maximum encode size
nvStatus = encodeAPI.nvEncGetEncodeCaps(
encodeAPI.device, NV_ENC_CODEC_H264_GUID, &maxEncodeWidth, &maxEncodeHeight);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to get maximum encode size.\n");
return 1;
}
// Clamp the resolution to the maximum
width = width > maxEncodeWidth ? maxEncodeWidth : width;
height = height > maxEncodeHeight ? maxEncodeHeight : height;
// Initialize the encoder
initializeParams.version = NV_ENC_INITIALIZE_PARAMS_VER;
initializeParams.encodeConfig = &encodeConfig;
initializeParams.encodeWidth = width;
initializeParams.encodeHeight = height;
initializeParams.maxEncodeWidth = maxEncodeWidth;
initializeParams.maxEncodeHeight = maxEncodeHeight;
nvStatus = encodeAPI.nvEncInitializeEncoder(
&initializeParams, &encoder);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to initialize the encoder.\n");
return 1;
}
// Configure the encoder
presetConfig.version = NV_ENC_PRESET_CONFIG_VER;
presetConfig.presetCfg.version = NV_ENC_CONFIG_VER;
presetConfig.presetCfg.profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
nvStatus = encodeAPI.nvEncSetEncodePresetConfig(
encoder, NV_ENC_CODEC_H264_GUID, &presetConfig);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to configure the encoder.\n");
return 1;
}
// Encode frame
uint32_t frameSize = width * height * 3;
void *inBuffer;
NV_ENC_LOCK_INPUT_BUFFER lockBufferParams;
memset(&lockBufferParams, 0, sizeof(lockBufferParams));
lockBufferParams.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
lockBufferParams.inputBuffer = &inBuffer;
nvStatus = encodeAPI.nvEncLockInputBuffer(
encoder, &lockBufferParams);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to lock input buffer.\n");
return 1;
}
// Copy frame data
memcpy(inBuffer, frameData, frameSize);
// Encode frame
NV_ENC_PIC_PARAMS picParams;
memset(&picParams, 0, sizeof(picParams));
picParams.version = NV_ENC_PIC_PARAMS_VER;
picParams.inputWidth = width;
picParams.inputHeight = height;
nvStatus = encodeAPI.nvEncEncodePicture(
encoder, &picParams);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to encode frame.\n");
return 1;
}
// Unlock the input buffer
nvStatus = encodeAPI.nvEncUnlockInputBuffer(encoder, inBuffer);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to unlock input buffer.\n");
return 1;
}
// Destroy the encoder
nvStatus = encodeAPI.nvEncDestroyEncoder(encoder);
if (nvStatus != NV_ENC_SUCCESS) {
printf("Failed to destroy the encoder.\n");
return 1;
}
return 0;
}