!35 add video save and stream in intel hw by ffmpeg
Merge pull request !35 from Daniel/intel_vaapi
This commit is contained in:
jario-jin
Gitee
commit
c556994c45
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@ -195,6 +195,13 @@ if(USE_CUDA)
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list(APPEND spirecv_SRCS ${ALG_SRC_FILES})
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file(GLOB ALG_SRC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/algorithm/veri/cuda/*.cpp)
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list(APPEND spirecv_SRCS ${ALG_SRC_FILES})
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file(GLOB ALG_SRC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/video_io/ffmpeg/x86_cuda/*.cpp)
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list(APPEND spirecv_SRCS ${ALG_SRC_FILES})
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endif()
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if(USE_INTEL)
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file(GLOB ALG_SRC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/video_io/ffmpeg/x86_intel/*.cpp)
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list(APPEND spirecv_SRCS ${ALG_SRC_FILES})
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endif()
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if(USE_INTEL)
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@ -0,0 +1,50 @@
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#pragma once
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#include <string>
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#include <vector>
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#include <chrono>
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// 获取当前系统启动以来的毫秒数
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static int64_t getCurTime()
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{
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// tv_sec (s) tv_nsec (ns-纳秒)
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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return (now.tv_sec * 1000 + now.tv_nsec / 1000000);
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}
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struct VideoFrame
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{
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public:
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enum VideoFrameType
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{
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BGR = 0,
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RGB ,
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YUV420P,
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};
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// VideoFrame(VideoFrameType type, int width, int height,int size)
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VideoFrame(VideoFrameType type, int width, int height)
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{
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this->type = type;
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this->width = width;
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this->height = height;
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this->size = width*height*3;
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this->data = new uint8_t[this->size];
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}
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~VideoFrame()
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{
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delete[] this->data;
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this->data = nullptr;
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}
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VideoFrameType type;
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int size;
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int width;
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int height;
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uint8_t *data;
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};
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@ -0,0 +1,635 @@
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#include "bs_push_streamer.h"
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/*
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amov_rtsp
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2914e3c44737811096c5e1797fe5373d12fcdd39
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*/
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// char av_error[AV_ERROR_MAX_STRING_SIZE] = { 0 };
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// #define av_err2str(errnum) av_make_error_string(av_error, AV_ERROR_MAX_STRING_SIZE, errnum)
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BsPushStreamer::BsPushStreamer()
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{
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}
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BsPushStreamer::~BsPushStreamer()
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{
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mThread->join();
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mThread = nullptr;
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}
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static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx, int width, int height)
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{
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AVBufferRef *hw_frames_ref;
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AVHWFramesContext *frames_ctx = NULL;
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int err = 0;
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if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx)))
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{
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fprintf(stderr, "Failed to create VAAPI frame context.\n");
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return -1;
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}
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frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
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frames_ctx->format = AV_PIX_FMT_VAAPI;
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frames_ctx->sw_format = AV_PIX_FMT_NV12;
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frames_ctx->width = width;
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frames_ctx->height = height;
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frames_ctx->initial_pool_size = 20;
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if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0)
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{
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// fprintf(stderr, "Failed to initialize VAAPI frame context."
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// "Error code: %s\n",av_err2str(err));
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av_buffer_unref(&hw_frames_ref);
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return err;
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}
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ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
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if (!ctx->hw_frames_ctx)
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err = AVERROR(ENOMEM);
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av_buffer_unref(&hw_frames_ref);
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return err;
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}
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bool BsPushStreamer::setup(std::string name, int width, int height, int fps, std::string encoder, int bitrate = 4)
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{
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if (!connect(name, width, height, fps, encoder, bitrate))
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{
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std::cout << "BsPushStreamer::setup error\n";
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return false;
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}
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mVideoFrame = new VideoFrame(VideoFrame::BGR, width, height);
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// std::cout << "BsStreamer::setup Success!\n";
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start();
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return true;
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}
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void BsPushStreamer::start()
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{
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mThread = new std::thread(BsPushStreamer::encodeVideoAndWriteStreamThread, this);
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mThread->native_handle();
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push_running = true;
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}
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bool BsPushStreamer::connect(std::string name, int width, int height, int fps, std::string encoder, int bitrate)
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{
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// 初始化上下文
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if (avformat_alloc_output_context2(&mFmtCtx, NULL, "rtsp", name.c_str()) < 0)
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{
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std::cout << "avformat_alloc_output_context2 error\n";
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return false;
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}
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// 初始化视频编码器
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// AVCodec *videoCodec = avcodec_find_encoder(AV_CODEC_ID_H264);
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// AVCodec *videoCodec = avcodec_find_encoder_by_name("h264_nvenc");
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err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,
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NULL, NULL, 0);
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AVCodec *videoCodec = avcodec_find_encoder_by_name(encoder.c_str());
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if (!videoCodec)
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{
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// std::cout << fmt::format("Using encoder:[{}] error!\n", encoder);
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videoCodec = avcodec_find_encoder(AV_CODEC_ID_H264);
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if (!videoCodec)
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{
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std::cout << "avcodec_alloc_context3 error";
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return false;
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}
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std::cout << "Using default H264 encoder!\n";
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}
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mVideoCodecCtx = avcodec_alloc_context3(videoCodec);
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if (!mVideoCodecCtx)
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{
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std::cout << "avcodec_alloc_context3 error";
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return false;
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}
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// 压缩视频bit位大小 300kB
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int bit_rate = bitrate * 1024 * 1024 * 8;
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// CBR：Constant BitRate - 固定比特率
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mVideoCodecCtx->flags |= AV_CODEC_FLAG_QSCALE;
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mVideoCodecCtx->bit_rate = bit_rate;
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mVideoCodecCtx->rc_min_rate = bit_rate;
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mVideoCodecCtx->rc_max_rate = bit_rate;
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mVideoCodecCtx->bit_rate_tolerance = bit_rate;
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mVideoCodecCtx->codec_id = videoCodec->id;
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// 不支持AV_PIX_FMT_BGR24直接进行编码
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mVideoCodecCtx->pix_fmt = AV_PIX_FMT_VAAPI;
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mVideoCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
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mVideoCodecCtx->width = width;
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mVideoCodecCtx->height = height;
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mVideoCodecCtx->time_base = {1, fps};
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mVideoCodecCtx->framerate = {fps, 1};
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mVideoCodecCtx->gop_size = 12;
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mVideoCodecCtx->max_b_frames = 0;
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mVideoCodecCtx->thread_count = 1;
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mVideoCodecCtx->sample_aspect_ratio = (AVRational){1, 1};
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// 手动设置PPS
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// unsigned char sps_pps[] = {
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// 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x2a, 0x96, 0x35, 0x40, 0xf0, 0x04,
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// 0x4f, 0xcb, 0x37, 0x01, 0x01, 0x01, 0x40, 0x00, 0x01, 0xc2, 0x00, 0x00, 0x57,
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// 0xe4, 0x01, 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x3c, 0x80, 0x00
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// };
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AVDictionary *video_codec_options = NULL;
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av_dict_set(&video_codec_options, "profile", "main", 0);
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// av_dict_set(&video_codec_options, "preset", "superfast", 0);
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av_dict_set(&video_codec_options, "tune", "fastdecode", 0);
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if ((err = set_hwframe_ctx(mVideoCodecCtx, hw_device_ctx, width, height)) < 0)
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{
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std::cout << "set_hwframe_ctx error\n";
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return false;
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}
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if (avcodec_open2(mVideoCodecCtx, videoCodec, &video_codec_options) < 0)
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{
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std::cout << "avcodec_open2 error\n";
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return false;
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}
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mVideoStream = avformat_new_stream(mFmtCtx, videoCodec);
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if (!mVideoStream)
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{
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std::cout << "avformat_new_stream error\n";
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return false;
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}
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mVideoStream->id = mFmtCtx->nb_streams - 1;
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// stream的time_base参数非常重要，它表示将现实中的一秒钟分为多少个时间基, 在下面调用avformat_write_header时自动完成
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avcodec_parameters_from_context(mVideoStream->codecpar, mVideoCodecCtx);
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mVideoIndex = mVideoStream->id;
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// open output url
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av_dump_format(mFmtCtx, 0, name.c_str(), 1);
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if (!(mFmtCtx->oformat->flags & AVFMT_NOFILE))
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{
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int ret = avio_open(&mFmtCtx->pb, name.c_str(), AVIO_FLAG_WRITE);
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if (ret < 0)
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{
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// std::cout << fmt::format("avio_open error url: {}\n", name.c_str());
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// std::cout << fmt::format("ret = {} : {}\n", ret, av_err2str(ret));
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// std::cout << fmt::format("ret = {}\n", ret);
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return false;
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}
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}
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AVDictionary *fmt_options = NULL;
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av_dict_set(&fmt_options, "bufsize", "1024", 0);
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av_dict_set(&fmt_options, "rw_timeout", "30000000", 0); // 设置rtmp/http-flv连接超时（单位 us）
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av_dict_set(&fmt_options, "stimeout", "30000000", 0); // 设置rtsp连接超时（单位 us）
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av_dict_set(&fmt_options, "rtsp_transport", "tcp", 0);
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mFmtCtx->video_codec_id = mFmtCtx->oformat->video_codec;
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mFmtCtx->audio_codec_id = mFmtCtx->oformat->audio_codec;
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// 调用该函数会将所有stream的time_base，自动设置一个值，通常是1/90000或1/1000，这表示一秒钟表示的时间基长度
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if (avformat_write_header(mFmtCtx, &fmt_options) < 0)
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{
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std::cout << "avformat_write_header error\n";
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return false;
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}
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return true;
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}
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void BsPushStreamer::encodeVideoAndWriteStreamThread(void *arg)
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{
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// PushExecutor *executor = (PushExecutor *)arg;
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BsPushStreamer *mBsPushStreamer = (BsPushStreamer *)arg;
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int width = mBsPushStreamer->mVideoFrame->width;
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int height = mBsPushStreamer->mVideoFrame->height;
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// 未编码的视频帧（bgr格式）
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// VideoFrame *videoFrame = NULL;
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// 未编码视频帧队列当前长度
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// int videoFrameQSize = 0;
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AVFrame *hw_frame = NULL;
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AVFrame *frame_nv12 = av_frame_alloc();
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frame_nv12->format = AV_PIX_FMT_NV12;
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frame_nv12->width = width;
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frame_nv12->height = height;
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int frame_nv12_buff_size = av_image_get_buffer_size(AV_PIX_FMT_NV12, width, height, 1);
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uint8_t *frame_nv12_buff = (uint8_t *)av_malloc(frame_nv12_buff_size);
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av_image_fill_arrays(
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frame_nv12->data, frame_nv12->linesize,
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frame_nv12_buff,
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AV_PIX_FMT_NV12,
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width, height, 1);
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if (!(hw_frame = av_frame_alloc()))
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{
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std::cout << "Error while av_frame_alloc().\n";
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}
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if (av_hwframe_get_buffer(mBsPushStreamer->mVideoCodecCtx->hw_frames_ctx, hw_frame, 0) < 0)
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{
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std::cout << "Error while av_hwframe_get_buffer.\n";
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}
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if (!hw_frame->hw_frames_ctx)
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{
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std::cout << "Error while hw_frames_ctx.\n";
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}
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// 编码后的视频帧
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AVPacket *pkt = av_packet_alloc();
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int64_t encodeSuccessCount = 0;
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int64_t frameCount = 0;
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int64_t t1 = 0;
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int64_t t2 = 0;
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int ret = -1;
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auto cnt_time = std::chrono::system_clock::now().time_since_epoch();
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auto last_update_time = std::chrono::system_clock::now().time_since_epoch();
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while (mBsPushStreamer->push_running)
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{
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// if (mBsPushStreamer->getVideoFrame(videoFrame, videoFrameQSize))
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if (mBsPushStreamer->nd_push_frame)
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{
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mBsPushStreamer->nd_push_frame = false;
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// frame_bgr 转 frame_nv12
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//mBsPushStreamer->bgr24ToYuv420p(mBsPushStreamer->mVideoFrame->data, width, height, frame_nv12_buff);
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mBsPushStreamer->Rgb2NV12(mBsPushStreamer->mVideoFrame->data, 3, width, height, frame_nv12_buff);
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frame_nv12->pts = frame_nv12->pkt_dts = av_rescale_q_rnd(
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frameCount,
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mBsPushStreamer->mVideoCodecCtx->time_base,
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mBsPushStreamer->mVideoStream->time_base,
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(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
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frame_nv12->pkt_duration = av_rescale_q_rnd(
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1,
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mBsPushStreamer->mVideoCodecCtx->time_base,
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mBsPushStreamer->mVideoStream->time_base,
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(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
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frame_nv12->pkt_pos = -1;
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hw_frame->pts = hw_frame->pkt_dts = av_rescale_q_rnd(
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frameCount,
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mBsPushStreamer->mVideoCodecCtx->time_base,
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mBsPushStreamer->mVideoStream->time_base,
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(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
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hw_frame->pkt_duration = av_rescale_q_rnd(
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1,
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mBsPushStreamer->mVideoCodecCtx->time_base,
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mBsPushStreamer->mVideoStream->time_base,
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(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
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hw_frame->pkt_pos = -1;
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if (av_hwframe_transfer_data(hw_frame, frame_nv12, 0) < 0)
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{
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std::cout << "Error while transferring frame data to surface.\n";
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}
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t1 = getCurTime();
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ret = avcodec_send_frame(mBsPushStreamer->mVideoCodecCtx, hw_frame);
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if (ret >= 0)
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{
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ret = avcodec_receive_packet(mBsPushStreamer->mVideoCodecCtx, pkt);
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if (ret >= 0)
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{
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t2 = getCurTime();
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encodeSuccessCount++;
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// 如果实际推流的是flv文件，不会执行里面的fix_packet_pts
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if (pkt->pts == AV_NOPTS_VALUE)
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{
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std::cout << "pkt->pts == AV_NOPTS_VALUE\n";
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}
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pkt->stream_index = mBsPushStreamer->mVideoIndex;
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pkt->pos = -1;
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pkt->duration = frame_nv12->pkt_duration;
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ret = mBsPushStreamer->writePkt(pkt);
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if (ret < 0)
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{
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// std::cout << fmt::format("writePkt : ret = {}\n", ret);
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}
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}
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else
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{
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// std::cout << fmt::format("avcodec_receive_packet error : ret = {}\n", ret);
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}
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}
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else
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{
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// std::cout << fmt::format("avcodec_send_frame error : ret = {}\n", ret);
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}
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frameCount++;
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}
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else
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(5));
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}
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}
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// std::cout << fmt::format("push_running is false!\n");
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// std::cout << fmt::format("end stream!\n");
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// av_write_trailer(mFmtCtx); //写文件尾
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av_packet_unref(pkt);
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pkt = NULL;
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av_free(frame_nv12_buff);
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frame_nv12_buff = NULL;
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av_frame_free(&frame_nv12);
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av_frame_unref(hw_frame);
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frame_nv12 = NULL;
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hw_frame = NULL;
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}
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int BsPushStreamer::writePkt(AVPacket *pkt)
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{
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mWritePkt_mtx.lock();
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int ret = av_write_frame(mFmtCtx, pkt);
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mWritePkt_mtx.unlock();
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return ret;
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}
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bool BsPushStreamer::getVideoFrame(VideoFrame *&frame, int &frameQSize)
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{
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mRGB_VideoFrameQ_mtx.lock();
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|
||||
if (!mRGB_VideoFrameQ.empty())
|
||||
{
|
||||
frame = mRGB_VideoFrameQ.front();
|
||||
mRGB_VideoFrameQ.pop();
|
||||
frameQSize = mRGB_VideoFrameQ.size();
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
frameQSize = 0;
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// void BsPushStreamer::pushVideoFrame(unsigned char *data, int width,int height)
|
||||
void BsPushStreamer::stream(cv::Mat &image)
|
||||
{
|
||||
|
||||
int size = image.cols * image.rows * image.channels();
|
||||
//VideoFrame *frame = new VideoFrame(VideoFrame::BGR, image.cols, image.rows);
|
||||
cv::Mat bgr = cv::Mat::zeros(image.size(), CV_8UC3);
|
||||
cv::cvtColor(image, bgr, cv::COLOR_BGR2RGB);
|
||||
|
||||
memcpy(mVideoFrame->data, bgr.data, size);
|
||||
|
||||
mRGB_VideoFrameQ_mtx.lock();
|
||||
nd_push_frame = true;
|
||||
// mRGB_VideoFrameQ.push(frame);
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
}
|
||||
|
||||
bool BsPushStreamer::videoFrameQisEmpty()
|
||||
{
|
||||
return mRGB_VideoFrameQ.empty();
|
||||
}
|
||||
|
||||
unsigned char BsPushStreamer::clipValue(unsigned char x, unsigned char min_val, unsigned char max_val)
|
||||
{
|
||||
if (x > max_val)
|
||||
{
|
||||
return max_val;
|
||||
}
|
||||
else if (x < min_val)
|
||||
{
|
||||
return min_val;
|
||||
}
|
||||
else
|
||||
{
|
||||
return x;
|
||||
}
|
||||
}
|
||||
|
||||
bool BsPushStreamer::bgr24ToYuv420p(unsigned char *bgrBuf, int w, int h, unsigned char *yuvBuf)
|
||||
{
|
||||
|
||||
unsigned char *ptrY, *ptrU, *ptrV, *ptrRGB;
|
||||
memset(yuvBuf, 0, w * h * 3 / 2);
|
||||
ptrY = yuvBuf;
|
||||
ptrU = yuvBuf + w * h;
|
||||
ptrV = ptrU + (w * h * 1 / 4);
|
||||
unsigned char y, u, v, r, g, b;
|
||||
|
||||
for (int j = 0; j < h; ++j)
|
||||
{
|
||||
|
||||
ptrRGB = bgrBuf + w * j * 3;
|
||||
for (int i = 0; i < w; i++)
|
||||
{
|
||||
b = *(ptrRGB++);
|
||||
g = *(ptrRGB++);
|
||||
r = *(ptrRGB++);
|
||||
|
||||
y = (unsigned char)((66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
|
||||
u = (unsigned char)((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
|
||||
v = (unsigned char)((112 * r - 94 * g - 18 * b + 128) >> 8) + 128;
|
||||
*(ptrY++) = clipValue(y, 0, 255);
|
||||
if (j % 2 == 0 && i % 2 == 0)
|
||||
{
|
||||
*(ptrU++) = clipValue(u, 0, 255);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (i % 2 == 0)
|
||||
{
|
||||
*(ptrV++) = clipValue(v, 0, 255);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// https://software.intel.com/en-us/node/503873
|
||||
// YCbCr Color Model:
|
||||
// The YCbCr color space is used for component digital video and was developed as part of the ITU-R BT.601 Recommendation. YCbCr is a scaled and offset version of the YUV color space.
|
||||
// The Intel IPP functions use the following basic equations [Jack01] to convert between R'G'B' in the range 0-255 and Y'Cb'Cr' (this notation means that all components are derived from gamma-corrected R'G'B'):
|
||||
// Y' = 0.257*R' + 0.504*G' + 0.098*B' + 16
|
||||
// Cb' = -0.148*R' - 0.291*G' + 0.439*B' + 128
|
||||
// Cr' = 0.439*R' - 0.368*G' - 0.071*B' + 128
|
||||
|
||||
// Y' = 0.257*R' + 0.504*G' + 0.098*B' + 16
|
||||
static float Rgb2Y(float r0, float g0, float b0)
|
||||
{
|
||||
float y0 = 0.257f * r0 + 0.504f * g0 + 0.098f * b0 + 16.0f;
|
||||
return y0;
|
||||
}
|
||||
|
||||
// U equals Cb'
|
||||
// Cb' = -0.148*R' - 0.291*G' + 0.439*B' + 128
|
||||
static float Rgb2U(float r0, float g0, float b0)
|
||||
{
|
||||
float u0 = -0.148f * r0 - 0.291f * g0 + 0.439f * b0 + 128.0f;
|
||||
return u0;
|
||||
}
|
||||
|
||||
// V equals Cr'
|
||||
// Cr' = 0.439*R' - 0.368*G' - 0.071*B' + 128
|
||||
static float Rgb2V(float r0, float g0, float b0)
|
||||
{
|
||||
float v0 = 0.439f * r0 - 0.368f * g0 - 0.071f * b0 + 128.0f;
|
||||
return v0;
|
||||
}
|
||||
|
||||
// Convert two rows from RGB to two Y rows, and one row of interleaved U,V.
|
||||
// I0 and I1 points two sequential source rows.
|
||||
// I0 -> rgbrgbrgbrgbrgbrgb...
|
||||
// I1 -> rgbrgbrgbrgbrgbrgb...
|
||||
// Y0 and Y1 points two sequential destination rows of Y plane.
|
||||
// Y0 -> yyyyyy
|
||||
// Y1 -> yyyyyy
|
||||
// UV0 points destination rows of interleaved UV plane.
|
||||
// UV0 -> uvuvuv
|
||||
static void Rgb2NV12TwoRows(const unsigned char I0[],
|
||||
const unsigned char I1[],
|
||||
int step,
|
||||
const int image_width,
|
||||
unsigned char Y0[],
|
||||
unsigned char Y1[],
|
||||
unsigned char UV0[])
|
||||
{
|
||||
int x; // Column index
|
||||
|
||||
// Process 4 source pixels per iteration (2 pixels of row I0 and 2 pixels of row I1).
|
||||
for (x = 0; x < image_width; x += 2)
|
||||
{
|
||||
// Load R,G,B elements from first row (and convert to float).
|
||||
float r00 = (float)I0[x * step + 0];
|
||||
float g00 = (float)I0[x * step + 1];
|
||||
float b00 = (float)I0[x * step + 2];
|
||||
|
||||
// Load next R,G,B elements from first row (and convert to float).
|
||||
float r01 = (float)I0[x * step + step + 0];
|
||||
float g01 = (float)I0[x * step + step + 1];
|
||||
float b01 = (float)I0[x * step + step + 2];
|
||||
|
||||
// Load R,G,B elements from second row (and convert to float).
|
||||
float r10 = (float)I1[x * step + 0];
|
||||
float g10 = (float)I1[x * step + 1];
|
||||
float b10 = (float)I1[x * step + 2];
|
||||
|
||||
// Load next R,G,B elements from second row (and convert to float).
|
||||
float r11 = (float)I1[x * step + step + 0];
|
||||
float g11 = (float)I1[x * step + step + 1];
|
||||
float b11 = (float)I1[x * step + step + 2];
|
||||
|
||||
// Calculate 4 Y elements.
|
||||
float y00 = Rgb2Y(r00, g00, b00);
|
||||
float y01 = Rgb2Y(r01, g01, b01);
|
||||
float y10 = Rgb2Y(r10, g10, b10);
|
||||
float y11 = Rgb2Y(r11, g11, b11);
|
||||
|
||||
// Calculate 4 U elements.
|
||||
float u00 = Rgb2U(r00, g00, b00);
|
||||
float u01 = Rgb2U(r01, g01, b01);
|
||||
float u10 = Rgb2U(r10, g10, b10);
|
||||
float u11 = Rgb2U(r11, g11, b11);
|
||||
|
||||
// Calculate 4 V elements.
|
||||
float v00 = Rgb2V(r00, g00, b00);
|
||||
float v01 = Rgb2V(r01, g01, b01);
|
||||
float v10 = Rgb2V(r10, g10, b10);
|
||||
float v11 = Rgb2V(r11, g11, b11);
|
||||
|
||||
// Calculate destination U element: average of 2x2 "original" U elements.
|
||||
float u0 = (u00 + u01 + u10 + u11) * 0.25f;
|
||||
|
||||
// Calculate destination V element: average of 2x2 "original" V elements.
|
||||
float v0 = (v00 + v01 + v10 + v11) * 0.25f;
|
||||
|
||||
// Store 4 Y elements (two in first row and two in second row).
|
||||
Y0[x + 0] = (unsigned char)(y00 + 0.5f);
|
||||
Y0[x + 1] = (unsigned char)(y01 + 0.5f);
|
||||
Y1[x + 0] = (unsigned char)(y10 + 0.5f);
|
||||
Y1[x + 1] = (unsigned char)(y11 + 0.5f);
|
||||
|
||||
// Store destination U element.
|
||||
UV0[x + 0] = (unsigned char)(u0 + 0.5f);
|
||||
|
||||
// Store destination V element (next to stored U element).
|
||||
UV0[x + 1] = (unsigned char)(v0 + 0.5f);
|
||||
}
|
||||
}
|
||||
|
||||
// Convert image I from pixel ordered RGB to NV12 format.
|
||||
// I - Input image in pixel ordered RGB format
|
||||
// image_width - Number of columns of I
|
||||
// image_height - Number of rows of I
|
||||
// J - Destination "image" in NV12 format.
|
||||
|
||||
// I is pixel ordered RGB color format (size in bytes is image_width*image_height*3):
|
||||
// RGBRGBRGBRGBRGBRGB
|
||||
// RGBRGBRGBRGBRGBRGB
|
||||
// RGBRGBRGBRGBRGBRGB
|
||||
// RGBRGBRGBRGBRGBRGB
|
||||
//
|
||||
// J is in NV12 format (size in bytes is image_width*image_height*3/2):
|
||||
// YYYYYY
|
||||
// YYYYYY
|
||||
// UVUVUV
|
||||
// Each element of destination U is average of 2x2 "original" U elements
|
||||
// Each element of destination V is average of 2x2 "original" V elements
|
||||
//
|
||||
// Limitations:
|
||||
// 1. image_width must be a multiple of 2.
|
||||
// 2. image_height must be a multiple of 2.
|
||||
// 3. I and J must be two separate arrays (in place computation is not supported).
|
||||
void BsPushStreamer::Rgb2NV12(const unsigned char I[], int step,
|
||||
const int image_width,
|
||||
const int image_height,
|
||||
unsigned char J[])
|
||||
{
|
||||
// In NV12 format, UV plane starts below Y plane.
|
||||
unsigned char *UV = &J[image_width * image_height];
|
||||
|
||||
// I0 and I1 points two sequential source rows.
|
||||
const unsigned char *I0; // I0 -> rgbrgbrgbrgbrgbrgb...
|
||||
const unsigned char *I1; // I1 -> rgbrgbrgbrgbrgbrgb...
|
||||
|
||||
// Y0 and Y1 points two sequential destination rows of Y plane.
|
||||
unsigned char *Y0; // Y0 -> yyyyyy
|
||||
unsigned char *Y1; // Y1 -> yyyyyy
|
||||
|
||||
// UV0 points destination rows of interleaved UV plane.
|
||||
unsigned char *UV0; // UV0 -> uvuvuv
|
||||
|
||||
int y; // Row index
|
||||
|
||||
// In each iteration: process two rows of Y plane, and one row of interleaved UV plane.
|
||||
for (y = 0; y < image_height; y += 2)
|
||||
{
|
||||
I0 = &I[y * image_width * step]; // Input row width is image_width*3 bytes (each pixel is R,G,B).
|
||||
I1 = &I[(y + 1) * image_width * step];
|
||||
|
||||
Y0 = &J[y * image_width]; // Output Y row width is image_width bytes (one Y element per pixel).
|
||||
Y1 = &J[(y + 1) * image_width];
|
||||
|
||||
UV0 = &UV[(y / 2) * image_width]; // Output UV row - width is same as Y row width.
|
||||
|
||||
// Process two source rows into: Two Y destination row, and one destination interleaved U,V row.
|
||||
Rgb2NV12TwoRows(I0,
|
||||
I1,
|
||||
step,
|
||||
image_width,
|
||||
Y0,
|
||||
Y1,
|
||||
UV0);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,88 @@
|
|||
#pragma once
|
||||
|
||||
#include <iostream>
|
||||
#include <thread>
|
||||
#include <chrono>
|
||||
|
||||
// #include <fmt/core.h>
|
||||
// #include <glog/logging.h>
|
||||
|
||||
#include <queue>
|
||||
#include <mutex>
|
||||
extern "C"
|
||||
{
|
||||
#include <libavcodec/avcodec.h>
|
||||
#include <libavformat/avformat.h>
|
||||
#include <libswscale/swscale.h>
|
||||
#include <libavutil/imgutils.h>
|
||||
// #include <libavutil/error.h>
|
||||
#include <libswresample/swresample.h>
|
||||
|
||||
#include <libavutil/pixdesc.h>
|
||||
#include <libavutil/hwcontext.h>
|
||||
}
|
||||
|
||||
#include <opencv2/core/core.hpp>
|
||||
#include <opencv2/opencv.hpp>
|
||||
#include "bs_common.h"
|
||||
|
||||
using namespace cv;
|
||||
|
||||
class BsPushStreamer
|
||||
{
|
||||
public:
|
||||
BsPushStreamer();
|
||||
~BsPushStreamer();
|
||||
|
||||
// 用于初始化视频推流，仅调用一次
|
||||
bool setup(std::string name, int width, int height, int fps, std::string encoder, int bitrate);
|
||||
// 推流一帧图像，在循环中被调用
|
||||
void stream(cv::Mat &image);
|
||||
|
||||
// 连接流媒体服务器
|
||||
bool connect(std::string name, int width, int height, int fps, std::string encoder, int bitrate);
|
||||
void start();
|
||||
void stop() { push_running = false; };
|
||||
|
||||
// 编码视频帧并推流
|
||||
static void encodeVideoAndWriteStreamThread(void *arg);
|
||||
|
||||
bool videoFrameQisEmpty();
|
||||
|
||||
int writePkt(AVPacket *pkt);
|
||||
|
||||
// 上下文
|
||||
AVFormatContext *mFmtCtx = nullptr;
|
||||
// 视频帧
|
||||
AVCodecContext *mVideoCodecCtx = NULL;
|
||||
AVStream *mVideoStream = NULL;
|
||||
|
||||
VideoFrame *mVideoFrame = NULL;
|
||||
AVBufferRef *hw_device_ctx = NULL;
|
||||
|
||||
int err;
|
||||
|
||||
int mVideoIndex = -1;
|
||||
|
||||
// YAML::Node yaml_cfg;
|
||||
|
||||
private:
|
||||
// 从mRGB_VideoFrameQ里面获取RGBframe
|
||||
bool getVideoFrame(VideoFrame *&frame, int &frameQSize);
|
||||
|
||||
// bgr24转yuv420p
|
||||
unsigned char clipValue(unsigned char x, unsigned char min_val, unsigned char max_val);
|
||||
bool bgr24ToYuv420p(unsigned char *bgrBuf, int w, int h, unsigned char *yuvBuf);
|
||||
void Rgb2NV12(const unsigned char I[], int step, const int image_width, const int image_height, unsigned char J[]);
|
||||
|
||||
bool push_running = false;
|
||||
bool nd_push_frame = false;
|
||||
|
||||
// 视频帧
|
||||
std::queue<VideoFrame *> mRGB_VideoFrameQ;
|
||||
std::mutex mRGB_VideoFrameQ_mtx;
|
||||
|
||||
// 推流锁
|
||||
std::mutex mWritePkt_mtx;
|
||||
std::thread *mThread;
|
||||
};
|
||||
|
|
@ -0,0 +1,655 @@
|
|||
#include "bs_video_saver.h"
|
||||
|
||||
/*
|
||||
amov_rtsp
|
||||
53248e16cc899903cf296df468977c60d7d73aa7
|
||||
*/
|
||||
BsVideoSaver::BsVideoSaver()
|
||||
{
|
||||
}
|
||||
|
||||
BsVideoSaver::~BsVideoSaver()
|
||||
{
|
||||
}
|
||||
|
||||
static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx, int width, int height)
|
||||
{
|
||||
AVBufferRef *hw_frames_ref;
|
||||
AVHWFramesContext *frames_ctx = NULL;
|
||||
int err = 0;
|
||||
|
||||
if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx)))
|
||||
{
|
||||
fprintf(stderr, "Failed to create VAAPI frame context.\n");
|
||||
return -1;
|
||||
}
|
||||
frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
|
||||
frames_ctx->format = AV_PIX_FMT_VAAPI;
|
||||
frames_ctx->sw_format = AV_PIX_FMT_NV12;
|
||||
frames_ctx->width = width;
|
||||
frames_ctx->height = height;
|
||||
frames_ctx->initial_pool_size = 20;
|
||||
if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0)
|
||||
{
|
||||
// fprintf(stderr, "Failed to initialize VAAPI frame context."
|
||||
// "Error code: %s\n",av_err2str(err));
|
||||
av_buffer_unref(&hw_frames_ref);
|
||||
return err;
|
||||
}
|
||||
ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
|
||||
if (!ctx->hw_frames_ctx)
|
||||
err = AVERROR(ENOMEM);
|
||||
|
||||
av_buffer_unref(&hw_frames_ref);
|
||||
return err;
|
||||
}
|
||||
|
||||
bool BsVideoSaver::setup(std::string name, int width, int height, int fps, std::string encoder, int bitrate = 4)
|
||||
{
|
||||
// 重置状态然后初始化
|
||||
this->width = width;
|
||||
this->height = height;
|
||||
|
||||
// 线程停止
|
||||
if (mThread != nullptr)
|
||||
{
|
||||
this->stop();
|
||||
}
|
||||
|
||||
// 编码器重置
|
||||
if (mVideoCodecCtx != NULL)
|
||||
{
|
||||
avcodec_free_context(&mVideoCodecCtx);
|
||||
}
|
||||
|
||||
if (!this->init(name, width, height, fps, encoder, bitrate))
|
||||
{
|
||||
std::cout << "BsVideoSaver::setup error\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
std::cout << "BsStreamer::setup Success!\n";
|
||||
start();
|
||||
return true;
|
||||
}
|
||||
|
||||
void BsVideoSaver::start()
|
||||
{
|
||||
mThread = new std::thread(BsVideoSaver::encodeVideoAndSaveThread, this);
|
||||
mThread->native_handle();
|
||||
push_running = true;
|
||||
}
|
||||
|
||||
void BsVideoSaver::stop()
|
||||
{
|
||||
if (mThread != nullptr)
|
||||
{
|
||||
push_running = false;
|
||||
mThread->join();
|
||||
mThread = nullptr;
|
||||
}
|
||||
}
|
||||
|
||||
bool BsVideoSaver::init(std::string name, int width, int height, int fps, std::string encoder, int bitrate)
|
||||
{
|
||||
// 初始化上下文
|
||||
if (avformat_alloc_output_context2(&mFmtCtx, NULL, NULL, name.c_str()) < 0)
|
||||
{
|
||||
std::cout << "avformat_alloc_output_context2 error\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
// 初始化视频编码器
|
||||
// AVCodec *videoCodec = avcodec_find_encoder(AV_CODEC_ID_H264);
|
||||
// AVCodec *videoCodec = avcodec_find_encoder_by_name("h264_nvenc");
|
||||
err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,
|
||||
NULL, NULL, 0);
|
||||
|
||||
AVCodec *videoCodec = avcodec_find_encoder_by_name(encoder.c_str());
|
||||
if (!videoCodec)
|
||||
{
|
||||
// std::cout << fmt::format("Using encoder:[{}] error!\n", encoder);
|
||||
videoCodec = avcodec_find_encoder(AV_CODEC_ID_H264);
|
||||
|
||||
if (!videoCodec)
|
||||
{
|
||||
std::cout << "avcodec_alloc_context3 error";
|
||||
return false;
|
||||
}
|
||||
|
||||
std::cout << "Using default H264 encoder!\n";
|
||||
}
|
||||
|
||||
mVideoCodecCtx = avcodec_alloc_context3(videoCodec);
|
||||
if (!mVideoCodecCtx)
|
||||
{
|
||||
std::cout << "avcodec_alloc_context3 error";
|
||||
return false;
|
||||
}
|
||||
|
||||
// 压缩视频bit位大小 300kB
|
||||
int bit_rate = bitrate * 1024 * 1024 * 8;
|
||||
|
||||
// CBR：Constant BitRate - 固定比特率
|
||||
mVideoCodecCtx->flags |= AV_CODEC_FLAG_QSCALE;
|
||||
mVideoCodecCtx->bit_rate = bit_rate;
|
||||
mVideoCodecCtx->rc_min_rate = bit_rate;
|
||||
mVideoCodecCtx->rc_max_rate = bit_rate;
|
||||
mVideoCodecCtx->bit_rate_tolerance = bit_rate;
|
||||
|
||||
mVideoCodecCtx->codec_id = videoCodec->id;
|
||||
// 不支持AV_PIX_FMT_BGR24直接进行编码
|
||||
mVideoCodecCtx->pix_fmt = AV_PIX_FMT_VAAPI;
|
||||
mVideoCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
|
||||
mVideoCodecCtx->width = width;
|
||||
mVideoCodecCtx->height = height;
|
||||
mVideoCodecCtx->time_base = {1, fps};
|
||||
mVideoCodecCtx->framerate = {fps, 1};
|
||||
mVideoCodecCtx->gop_size = 12;
|
||||
mVideoCodecCtx->max_b_frames = 0;
|
||||
mVideoCodecCtx->thread_count = 1;
|
||||
// mVideoCodecCtx->sample_aspect_ratio = (AVRational){1, 1};
|
||||
|
||||
AVDictionary *video_codec_options = NULL;
|
||||
av_dict_set(&video_codec_options, "profile", "main", 0);
|
||||
// av_dict_set(&video_codec_options, "preset", "superfast", 0);
|
||||
av_dict_set(&video_codec_options, "tune", "fastdecode", 0);
|
||||
if ((err = set_hwframe_ctx(mVideoCodecCtx, hw_device_ctx, width, height)) < 0)
|
||||
{
|
||||
std::cout << "set_hwframe_ctx error\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
if (avcodec_open2(mVideoCodecCtx, videoCodec, &video_codec_options) < 0)
|
||||
{
|
||||
std::cout << "avcodec_open2 error\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
mVideoStream = avformat_new_stream(mFmtCtx, videoCodec);
|
||||
if (!mVideoStream)
|
||||
{
|
||||
std::cout << "avformat_new_stream error\n";
|
||||
return false;
|
||||
}
|
||||
mVideoStream->id = mFmtCtx->nb_streams - 1;
|
||||
// stream的time_base参数非常重要，它表示将现实中的一秒钟分为多少个时间基, 在下面调用avformat_write_header时自动完成
|
||||
avcodec_parameters_from_context(mVideoStream->codecpar, mVideoCodecCtx);
|
||||
mVideoIndex = mVideoStream->id;
|
||||
|
||||
// open output url
|
||||
av_dump_format(mFmtCtx, 0, name.c_str(), 1);
|
||||
if (!(mFmtCtx->oformat->flags & AVFMT_NOFILE))
|
||||
{
|
||||
int ret = avio_open(&mFmtCtx->pb, name.c_str(), AVIO_FLAG_WRITE);
|
||||
if (ret < 0)
|
||||
{
|
||||
// std::cout << fmt::format("avio_open error url: {}\n", name.c_str());
|
||||
// std::cout << fmt::format("ret = {} : {}\n", ret, av_err2str(ret));
|
||||
// std::cout << fmt::format("ret = {}\n", ret);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
AVDictionary *fmt_options = NULL;
|
||||
av_dict_set(&fmt_options, "bufsize", "1024", 0);
|
||||
|
||||
mFmtCtx->video_codec_id = mFmtCtx->oformat->video_codec;
|
||||
mFmtCtx->audio_codec_id = mFmtCtx->oformat->audio_codec;
|
||||
|
||||
// 调用该函数会将所有stream的time_base，自动设置一个值，通常是1/90000或1/1000，这表示一秒钟表示的时间基长度
|
||||
if (avformat_write_header(mFmtCtx, &fmt_options) < 0)
|
||||
{
|
||||
std::cout << "avformat_write_header error\n";
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void BsVideoSaver::encodeVideoAndSaveThread(void *arg)
|
||||
{
|
||||
// PushExecutor *executor = (PushExecutor *)arg;
|
||||
BsVideoSaver *mBsVideoSaver = (BsVideoSaver *)arg;
|
||||
int width = mBsVideoSaver->width;
|
||||
int height = mBsVideoSaver->height;
|
||||
|
||||
// 未编码的视频帧（bgr格式）
|
||||
VideoFrame *videoFrame = NULL;
|
||||
// 未编码视频帧队列当前长度
|
||||
int videoFrameQSize = 0;
|
||||
|
||||
AVFrame *hw_frame = NULL;
|
||||
AVFrame *frame_nv12 = av_frame_alloc();
|
||||
frame_nv12->format = AV_PIX_FMT_NV12;
|
||||
frame_nv12->width = width;
|
||||
frame_nv12->height = height;
|
||||
|
||||
int frame_nv12_buff_size = av_image_get_buffer_size(AV_PIX_FMT_NV12, width, height, 1);
|
||||
uint8_t *frame_nv12_buff = (uint8_t *)av_malloc(frame_nv12_buff_size);
|
||||
av_image_fill_arrays(
|
||||
frame_nv12->data, frame_nv12->linesize,
|
||||
frame_nv12_buff,
|
||||
AV_PIX_FMT_NV12,
|
||||
width, height, 1);
|
||||
|
||||
/* read data into software frame, and transfer them into hw frame */
|
||||
// sw_frame->width = width;
|
||||
// sw_frame->height = height;
|
||||
// sw_frame->format = AV_PIX_FMT_NV12;
|
||||
|
||||
if (!(hw_frame = av_frame_alloc()))
|
||||
{
|
||||
std::cout << "Error while av_frame_alloc().\n";
|
||||
}
|
||||
if (av_hwframe_get_buffer(mBsVideoSaver->mVideoCodecCtx->hw_frames_ctx, hw_frame, 0) < 0)
|
||||
{
|
||||
std::cout << "Error while av_hwframe_get_buffer.\n";
|
||||
}
|
||||
if (!hw_frame->hw_frames_ctx)
|
||||
{
|
||||
std::cout << "Error while hw_frames_ctx.\n";
|
||||
}
|
||||
|
||||
// 编码后的视频帧
|
||||
AVPacket *pkt = av_packet_alloc();
|
||||
int64_t encodeSuccessCount = 0;
|
||||
int64_t frameCount = 0;
|
||||
|
||||
int64_t t1 = 0;
|
||||
int64_t t2 = 0;
|
||||
int ret = -1;
|
||||
|
||||
while (mBsVideoSaver->push_running)
|
||||
{
|
||||
if (mBsVideoSaver->getVideoFrame(videoFrame, videoFrameQSize))
|
||||
{
|
||||
|
||||
// frame_bgr 转 frame_nv12
|
||||
//mBsVideoSaver->bgr24ToYuv420p(videoFrame->data, width, height, frame_nv12_buff);
|
||||
mBsVideoSaver->Rgb2NV12(videoFrame->data, 3, width, height, frame_nv12_buff);
|
||||
// RGB2YUV_NV12(videoFrame->data, frame_nv12_buff, width, height );
|
||||
|
||||
frame_nv12->pts = frame_nv12->pkt_dts = av_rescale_q_rnd(
|
||||
frameCount,
|
||||
mBsVideoSaver->mVideoCodecCtx->time_base,
|
||||
mBsVideoSaver->mVideoStream->time_base,
|
||||
(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
|
||||
|
||||
frame_nv12->pkt_duration = av_rescale_q_rnd(
|
||||
1,
|
||||
mBsVideoSaver->mVideoCodecCtx->time_base,
|
||||
mBsVideoSaver->mVideoStream->time_base,
|
||||
(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
|
||||
|
||||
frame_nv12->pkt_pos = frameCount;
|
||||
|
||||
hw_frame->pts = hw_frame->pkt_dts = av_rescale_q_rnd(
|
||||
frameCount,
|
||||
mBsVideoSaver->mVideoCodecCtx->time_base,
|
||||
mBsVideoSaver->mVideoStream->time_base,
|
||||
(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
|
||||
|
||||
hw_frame->pkt_duration = av_rescale_q_rnd(
|
||||
1,
|
||||
mBsVideoSaver->mVideoCodecCtx->time_base,
|
||||
mBsVideoSaver->mVideoStream->time_base,
|
||||
(AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
|
||||
|
||||
hw_frame->pkt_pos = frameCount;
|
||||
|
||||
if (av_hwframe_transfer_data(hw_frame, frame_nv12, 0) < 0)
|
||||
{
|
||||
std::cout << "Error while transferring frame data to surface.\n";
|
||||
}
|
||||
|
||||
t1 = getCurTime();
|
||||
ret = avcodec_send_frame(mBsVideoSaver->mVideoCodecCtx, hw_frame);
|
||||
if (ret >= 0)
|
||||
{
|
||||
ret = avcodec_receive_packet(mBsVideoSaver->mVideoCodecCtx, pkt);
|
||||
if (ret >= 0)
|
||||
{
|
||||
t2 = getCurTime();
|
||||
encodeSuccessCount++;
|
||||
|
||||
pkt->stream_index = mBsVideoSaver->mVideoIndex;
|
||||
|
||||
pkt->pos = frameCount;
|
||||
pkt->duration = frame_nv12->pkt_duration;
|
||||
|
||||
ret = mBsVideoSaver->writePkt(pkt);
|
||||
|
||||
if (ret < 0)
|
||||
{
|
||||
// std::cout << fmt::format("writePkt : ret = {}\n", ret);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// std::cout << fmt::format("avcodec_receive_packet error : ret = {}\n", ret);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// std::cout << fmt::format("avcodec_send_frame error : ret = {}\n", ret);
|
||||
}
|
||||
|
||||
frameCount++;
|
||||
|
||||
// 释放资源
|
||||
delete videoFrame;
|
||||
videoFrame = NULL;
|
||||
}
|
||||
else
|
||||
{
|
||||
std::this_thread::sleep_for(std::chrono::milliseconds(1));
|
||||
}
|
||||
}
|
||||
// std::cout << fmt::format("push_running is false!\n");
|
||||
// std::cout << fmt::format("end stream!\n");
|
||||
|
||||
// 写文件尾
|
||||
av_write_trailer(mBsVideoSaver->mFmtCtx);
|
||||
|
||||
av_packet_unref(pkt);
|
||||
pkt = NULL;
|
||||
|
||||
av_free(frame_nv12_buff);
|
||||
frame_nv12_buff = NULL;
|
||||
|
||||
av_frame_free(&frame_nv12);
|
||||
av_frame_free(&hw_frame);
|
||||
// av_frame_unref(frame_nv12);
|
||||
frame_nv12 = NULL;
|
||||
}
|
||||
|
||||
int BsVideoSaver::writePkt(AVPacket *pkt)
|
||||
{
|
||||
mWritePkt_mtx.lock();
|
||||
int ret = av_write_frame(mFmtCtx, pkt);
|
||||
mWritePkt_mtx.unlock();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool BsVideoSaver::getVideoFrame(VideoFrame *&frame, int &frameQSize)
|
||||
{
|
||||
|
||||
mRGB_VideoFrameQ_mtx.lock();
|
||||
|
||||
if (!mRGB_VideoFrameQ.empty())
|
||||
{
|
||||
frame = mRGB_VideoFrameQ.front();
|
||||
mRGB_VideoFrameQ.pop();
|
||||
frameQSize = mRGB_VideoFrameQ.size();
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
frameQSize = 0;
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
void BsVideoSaver::write(cv::Mat &image)
|
||||
{
|
||||
|
||||
int size = image.cols * image.rows * image.channels();
|
||||
VideoFrame *frame = new VideoFrame(VideoFrame::BGR, image.cols, image.rows);
|
||||
cv::Mat bgr = cv::Mat::zeros(image.size(), CV_8UC3);
|
||||
cv::cvtColor(image, bgr, cv::COLOR_BGR2RGB);
|
||||
|
||||
memcpy(frame->data, bgr.data, size);
|
||||
|
||||
mRGB_VideoFrameQ_mtx.lock();
|
||||
mRGB_VideoFrameQ.push(frame);
|
||||
mRGB_VideoFrameQ_mtx.unlock();
|
||||
}
|
||||
|
||||
bool BsVideoSaver::videoFrameQisEmpty()
|
||||
{
|
||||
return mRGB_VideoFrameQ.empty();
|
||||
}
|
||||
|
||||
unsigned char BsVideoSaver::clipValue(unsigned char x, unsigned char min_val, unsigned char max_val)
|
||||
{
|
||||
if (x > max_val)
|
||||
{
|
||||
return max_val;
|
||||
}
|
||||
else if (x < min_val)
|
||||
{
|
||||
return min_val;
|
||||
}
|
||||
else
|
||||
{
|
||||
return x;
|
||||
}
|
||||
}
|
||||
|
||||
bool BsVideoSaver::bgr24ToYuv420p(unsigned char *bgrBuf, int w, int h, unsigned char *yuvBuf)
|
||||
{
|
||||
|
||||
unsigned char *ptrY, *ptrU, *ptrV, *ptrRGB;
|
||||
memset(yuvBuf, 0, w * h * 3 / 2);
|
||||
ptrY = yuvBuf;
|
||||
ptrU = yuvBuf + w * h;
|
||||
ptrV = ptrU + (w * h * 1 / 4);
|
||||
unsigned char y, u, v, r, g, b;
|
||||
|
||||
for (int j = 0; j < h; ++j)
|
||||
{
|
||||
|
||||
ptrRGB = bgrBuf + w * j * 3;
|
||||
for (int i = 0; i < w; i++)
|
||||
{
|
||||
b = *(ptrRGB++);
|
||||
g = *(ptrRGB++);
|
||||
r = *(ptrRGB++);
|
||||
|
||||
y = (unsigned char)((66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
|
||||
u = (unsigned char)((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
|
||||
v = (unsigned char)((112 * r - 94 * g - 18 * b + 128) >> 8) + 128;
|
||||
*(ptrY++) = clipValue(y, 0, 255);
|
||||
if (j % 2 == 0 && i % 2 == 0)
|
||||
{
|
||||
*(ptrU++) = clipValue(u, 0, 255);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (i % 2 == 0)
|
||||
{
|
||||
*(ptrV++) = clipValue(v, 0, 255);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//https://software.intel.com/en-us/node/503873
|
||||
//YCbCr Color Model:
|
||||
// The YCbCr color space is used for component digital video and was developed as part of the ITU-R BT.601 Recommendation. YCbCr is a scaled and offset version of the YUV color space.
|
||||
// The Intel IPP functions use the following basic equations [Jack01] to convert between R'G'B' in the range 0-255 and Y'Cb'Cr' (this notation means that all components are derived from gamma-corrected R'G'B'):
|
||||
// Y' = 0.257*R' + 0.504*G' + 0.098*B' + 16
|
||||
// Cb' = -0.148*R' - 0.291*G' + 0.439*B' + 128
|
||||
// Cr' = 0.439*R' - 0.368*G' - 0.071*B' + 128
|
||||
|
||||
|
||||
//Y' = 0.257*R' + 0.504*G' + 0.098*B' + 16
|
||||
static float Rgb2Y(float r0, float g0, float b0)
|
||||
{
|
||||
float y0 = 0.257f*r0 + 0.504f*g0 + 0.098f*b0 + 16.0f;
|
||||
return y0;
|
||||
}
|
||||
|
||||
//U equals Cb'
|
||||
//Cb' = -0.148*R' - 0.291*G' + 0.439*B' + 128
|
||||
static float Rgb2U(float r0, float g0, float b0)
|
||||
{
|
||||
float u0 = -0.148f*r0 - 0.291f*g0 + 0.439f*b0 + 128.0f;
|
||||
return u0;
|
||||
}
|
||||
|
||||
//V equals Cr'
|
||||
//Cr' = 0.439*R' - 0.368*G' - 0.071*B' + 128
|
||||
static float Rgb2V(float r0, float g0, float b0)
|
||||
{
|
||||
float v0 = 0.439f*r0 - 0.368f*g0 - 0.071f*b0 + 128.0f;
|
||||
return v0;
|
||||
}
|
||||
|
||||
//Convert two rows from RGB to two Y rows, and one row of interleaved U,V.
|
||||
//I0 and I1 points two sequential source rows.
|
||||
//I0 -> rgbrgbrgbrgbrgbrgb...
|
||||
//I1 -> rgbrgbrgbrgbrgbrgb...
|
||||
//Y0 and Y1 points two sequential destination rows of Y plane.
|
||||
//Y0 -> yyyyyy
|
||||
//Y1 -> yyyyyy
|
||||
//UV0 points destination rows of interleaved UV plane.
|
||||
//UV0 -> uvuvuv
|
||||
static void Rgb2NV12TwoRows(const unsigned char I0[],
|
||||
const unsigned char I1[],
|
||||
int step,
|
||||
const int image_width,
|
||||
unsigned char Y0[],
|
||||
unsigned char Y1[],
|
||||
unsigned char UV0[])
|
||||
{
|
||||
int x; //Column index
|
||||
|
||||
//Process 4 source pixels per iteration (2 pixels of row I0 and 2 pixels of row I1).
|
||||
for (x = 0; x < image_width; x += 2)
|
||||
{
|
||||
//Load R,G,B elements from first row (and convert to float).
|
||||
float r00 = (float)I0[x*step + 0];
|
||||
float g00 = (float)I0[x*step + 1];
|
||||
float b00 = (float)I0[x*step + 2];
|
||||
|
||||
//Load next R,G,B elements from first row (and convert to float).
|
||||
float r01 = (float)I0[x*step + step+0];
|
||||
float g01 = (float)I0[x*step + step+1];
|
||||
float b01 = (float)I0[x*step + step+2];
|
||||
|
||||
//Load R,G,B elements from second row (and convert to float).
|
||||
float r10 = (float)I1[x*step + 0];
|
||||
float g10 = (float)I1[x*step + 1];
|
||||
float b10 = (float)I1[x*step + 2];
|
||||
|
||||
//Load next R,G,B elements from second row (and convert to float).
|
||||
float r11 = (float)I1[x*step + step+0];
|
||||
float g11 = (float)I1[x*step + step+1];
|
||||
float b11 = (float)I1[x*step + step+2];
|
||||
|
||||
//Calculate 4 Y elements.
|
||||
float y00 = Rgb2Y(r00, g00, b00);
|
||||
float y01 = Rgb2Y(r01, g01, b01);
|
||||
float y10 = Rgb2Y(r10, g10, b10);
|
||||
float y11 = Rgb2Y(r11, g11, b11);
|
||||
|
||||
//Calculate 4 U elements.
|
||||
float u00 = Rgb2U(r00, g00, b00);
|
||||
float u01 = Rgb2U(r01, g01, b01);
|
||||
float u10 = Rgb2U(r10, g10, b10);
|
||||
float u11 = Rgb2U(r11, g11, b11);
|
||||
|
||||
//Calculate 4 V elements.
|
||||
float v00 = Rgb2V(r00, g00, b00);
|
||||
float v01 = Rgb2V(r01, g01, b01);
|
||||
float v10 = Rgb2V(r10, g10, b10);
|
||||
float v11 = Rgb2V(r11, g11, b11);
|
||||
|
||||
//Calculate destination U element: average of 2x2 "original" U elements.
|
||||
float u0 = (u00 + u01 + u10 + u11)*0.25f;
|
||||
|
||||
//Calculate destination V element: average of 2x2 "original" V elements.
|
||||
float v0 = (v00 + v01 + v10 + v11)*0.25f;
|
||||
|
||||
//Store 4 Y elements (two in first row and two in second row).
|
||||
Y0[x + 0] = (unsigned char)(y00 + 0.5f);
|
||||
Y0[x + 1] = (unsigned char)(y01 + 0.5f);
|
||||
Y1[x + 0] = (unsigned char)(y10 + 0.5f);
|
||||
Y1[x + 1] = (unsigned char)(y11 + 0.5f);
|
||||
|
||||
//Store destination U element.
|
||||
UV0[x + 0] = (unsigned char)(u0 + 0.5f);
|
||||
|
||||
//Store destination V element (next to stored U element).
|
||||
UV0[x + 1] = (unsigned char)(v0 + 0.5f);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//Convert image I from pixel ordered RGB to NV12 format.
|
||||
//I - Input image in pixel ordered RGB format
|
||||
//image_width - Number of columns of I
|
||||
//image_height - Number of rows of I
|
||||
//J - Destination "image" in NV12 format.
|
||||
|
||||
//I is pixel ordered RGB color format (size in bytes is image_width*image_height*3):
|
||||
//RGBRGBRGBRGBRGBRGB
|
||||
//RGBRGBRGBRGBRGBRGB
|
||||
//RGBRGBRGBRGBRGBRGB
|
||||
//RGBRGBRGBRGBRGBRGB
|
||||
//
|
||||
//J is in NV12 format (size in bytes is image_width*image_height*3/2):
|
||||
//YYYYYY
|
||||
//YYYYYY
|
||||
//UVUVUV
|
||||
//Each element of destination U is average of 2x2 "original" U elements
|
||||
//Each element of destination V is average of 2x2 "original" V elements
|
||||
//
|
||||
//Limitations:
|
||||
//1. image_width must be a multiple of 2.
|
||||
//2. image_height must be a multiple of 2.
|
||||
//3. I and J must be two separate arrays (in place computation is not supported).
|
||||
void BsVideoSaver::Rgb2NV12(const unsigned char I[], int step,
|
||||
const int image_width,
|
||||
const int image_height,
|
||||
unsigned char J[])
|
||||
{
|
||||
//In NV12 format, UV plane starts below Y plane.
|
||||
unsigned char *UV = &J[image_width*image_height];
|
||||
|
||||
//I0 and I1 points two sequential source rows.
|
||||
const unsigned char *I0; //I0 -> rgbrgbrgbrgbrgbrgb...
|
||||
const unsigned char *I1; //I1 -> rgbrgbrgbrgbrgbrgb...
|
||||
|
||||
//Y0 and Y1 points two sequential destination rows of Y plane.
|
||||
unsigned char *Y0; //Y0 -> yyyyyy
|
||||
unsigned char *Y1; //Y1 -> yyyyyy
|
||||
|
||||
//UV0 points destination rows of interleaved UV plane.
|
||||
unsigned char *UV0; //UV0 -> uvuvuv
|
||||
|
||||
int y; //Row index
|
||||
|
||||
//In each iteration: process two rows of Y plane, and one row of interleaved UV plane.
|
||||
for (y = 0; y < image_height; y += 2)
|
||||
{
|
||||
I0 = &I[y*image_width*step]; //Input row width is image_width*3 bytes (each pixel is R,G,B).
|
||||
I1 = &I[(y+1)*image_width*step];
|
||||
|
||||
Y0 = &J[y*image_width]; //Output Y row width is image_width bytes (one Y element per pixel).
|
||||
Y1 = &J[(y+1)*image_width];
|
||||
|
||||
UV0 = &UV[(y/2)*image_width]; //Output UV row - width is same as Y row width.
|
||||
|
||||
//Process two source rows into: Two Y destination row, and one destination interleaved U,V row.
|
||||
Rgb2NV12TwoRows(I0,
|
||||
I1,
|
||||
step,
|
||||
image_width,
|
||||
Y0,
|
||||
Y1,
|
||||
UV0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
#pragma once
|
||||
|
||||
#include <iostream>
|
||||
#include <thread>
|
||||
#include <chrono>
|
||||
|
||||
|
||||
#include <fmt/core.h>
|
||||
// #include <glog/logging.h>
|
||||
|
||||
#include <queue>
|
||||
#include <mutex>
|
||||
extern "C"
|
||||
{
|
||||
#include <libavcodec/avcodec.h>
|
||||
#include <libavformat/avformat.h>
|
||||
#include <libswscale/swscale.h>
|
||||
#include <libavutil/imgutils.h>
|
||||
// #include <libavutil/error.h>
|
||||
#include <libswresample/swresample.h>
|
||||
|
||||
#include <libavutil/pixdesc.h>
|
||||
#include <libavutil/hwcontext.h>
|
||||
}
|
||||
|
||||
#include <opencv2/core/core.hpp>
|
||||
#include <opencv2/opencv.hpp>
|
||||
#include "bs_common.h"
|
||||
|
||||
using namespace cv;
|
||||
class BsVideoSaver
|
||||
{
|
||||
public:
|
||||
BsVideoSaver();
|
||||
~BsVideoSaver();
|
||||
|
||||
// 用于初始化视频推流，仅调用一次
|
||||
bool setup(std::string name, int width, int height, int fps, std::string encoder, int bitrate);
|
||||
// 推流一帧图像，在循环中被调用
|
||||
void write(cv::Mat& image);
|
||||
|
||||
|
||||
// 连接流媒体服务器
|
||||
bool init(std::string name, int width, int height, int fps, std::string encoder, int bitrate);
|
||||
void start();
|
||||
void stop();
|
||||
|
||||
// 编码视频帧并推流
|
||||
static void encodeVideoAndSaveThread(void* arg);
|
||||
|
||||
bool videoFrameQisEmpty();
|
||||
|
||||
int writePkt(AVPacket *pkt);
|
||||
|
||||
|
||||
// 上下文
|
||||
AVFormatContext *mFmtCtx = nullptr;
|
||||
// 视频帧
|
||||
AVCodecContext *mVideoCodecCtx = NULL;
|
||||
AVStream *mVideoStream = NULL;
|
||||
|
||||
AVBufferRef *hw_device_ctx = NULL;
|
||||
|
||||
int err;
|
||||
|
||||
|
||||
int mVideoIndex = -1;
|
||||
|
||||
|
||||
private:
|
||||
|
||||
// 从mRGB_VideoFrameQ里面获取RGBframe
|
||||
bool getVideoFrame(VideoFrame *&frame, int &frameQSize);
|
||||
|
||||
|
||||
// bgr24转yuv420p
|
||||
unsigned char clipValue(unsigned char x, unsigned char min_val, unsigned char max_val);
|
||||
bool bgr24ToYuv420p(unsigned char *bgrBuf, int w, int h, unsigned char *yuvBuf);
|
||||
void Rgb2NV12(const unsigned char I[], int step, const int image_width, const int image_height, unsigned char J[]);
|
||||
// void RGB2YUV_NV12(uint8_t* rgbBufIn, uint8_t* yuvBufOut, int nWidth, int nHeight);
|
||||
|
||||
int width = -1;
|
||||
int height = -1;
|
||||
|
||||
|
||||
|
||||
|
||||
bool push_running = false;
|
||||
bool nd_push_frame = false;
|
||||
|
||||
// 视频帧
|
||||
std::queue<VideoFrame *> mRGB_VideoFrameQ;
|
||||
std::mutex mRGB_VideoFrameQ_mtx;
|
||||
|
||||
|
||||
// 推流锁
|
||||
std::mutex mWritePkt_mtx;
|
||||
std::thread* mThread = nullptr;
|
||||
|
||||
|
||||
};
|
||||
|
|
@ -6,8 +6,13 @@
|
|||
#include "writer_gstreamer_impl.h"
|
||||
#endif
|
||||
#ifdef WITH_FFMPEG
|
||||
#include "bs_push_streamer.h"
|
||||
#include "bs_video_saver.h"
|
||||
#ifdef PLATFORM_X86_CUDA
|
||||
#include "x86_cuda/bs_push_streamer.h"
|
||||
#include "x86_cuda/bs_video_saver.h"
|
||||
#else
|
||||
#include "x86_intel/bs_push_streamer.h"
|
||||
#include "x86_intel/bs_video_saver.h"
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
|
|
@ -40,7 +45,7 @@ bool VideoWriter::setupImpl(std::string file_name_)
|
|||
#ifdef PLATFORM_X86_CUDA
|
||||
std::string enc = "h264_nvenc";
|
||||
#else
|
||||
std::string enc = "";
|
||||
std::string enc = "h264_vaapi";
|
||||
#endif
|
||||
return this->_ffmpeg_impl->setup(file_path + file_name_ + ".avi", img_sz.width, img_sz.height, (int)fps, enc, 4);
|
||||
#endif
|
||||
|
|
@ -108,7 +113,7 @@ bool VideoStreamer::setupImpl()
|
|||
#ifdef PLATFORM_X86_CUDA
|
||||
std::string enc = "h264_nvenc";
|
||||
#else
|
||||
std::string enc = "";
|
||||
std::string enc = "h264_vaapi";
|
||||
#endif
|
||||
return this->_ffmpeg_impl->setup(rtsp_url, img_sz.width, img_sz.height, 24, enc, bitrate);
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue