#include "PL_H264Encoder.h"
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#include "MaterialBuffer.h"
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#include "logger.h"
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extern "C"
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{
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#include <libavcodec/avcodec.h>
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#include <libavutil/frame.h>
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#include <libavutil/imgutils.h>
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#include <libavutil/opt.h>
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#include <libavformat/avformat.h>
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}
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#include <libyuv.h>
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PL_H264Encoder_Config::PL_H264Encoder_Config() :
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inBufferSize(2*1024*1024), // 2MByte
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resetPTS(false),
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bytesBufferImageWidth(0), bytesBufferImageHeight(0),
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avc_bit_rate(1*1024*1024*8), //1Mbit
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avc_fps(25), avc_gop(25), avc_max_b_frames(0), avc_profile(FF_PROFILE_H264_BASELINE),
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av_opt_preset("superfast"), av_opt_tune(""), avc_profile_str("")
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{
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// av_opt_tune: zerolatency
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}
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struct H264Encoder_Internal
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{
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uint8_t* buffer;
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size_t buffSize;
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bool payError;
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bool ffmpegInited;
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size_t frameCount;
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MB_Frame lastFrame;
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PL_H264Encoder_Config config;
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AVCodecContext* pAVCodecContext;
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AVFrame* pAVFrame;//#todo delete
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AVFormatContext* pAVFormatContext;
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H264Encoder_Internal() :
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buffer(nullptr), buffSize(0),
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payError(true), ffmpegInited(false), frameCount(0), lastFrame(), config(),
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pAVCodecContext(nullptr), pAVFrame(nullptr), pAVFormatContext(nullptr)
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{
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}
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~H264Encoder_Internal()
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{
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delete[] buffer;
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buffer = nullptr;
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}
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void reset()
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{
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buffSize = 0;
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payError = true;
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ffmpegInited = false;
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frameCount = 0;
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MB_Frame _lastFrame;
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lastFrame = _lastFrame;
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PL_H264Encoder_Config _config;
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config = _config;
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pAVCodecContext = nullptr;
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pAVFrame = nullptr;
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pAVFormatContext = nullptr;
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if (buffer != nullptr)
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{
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delete[] buffer;
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buffer = nullptr;
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}
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}
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};
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PipeLineElem* create_PL_H264Encoder()
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{
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return new PL_H264Encoder;
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}
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PL_H264Encoder::PL_H264Encoder() : internal(new H264Encoder_Internal)
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{
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}
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PL_H264Encoder::~PL_H264Encoder()
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{
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delete (H264Encoder_Internal*)internal;
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internal= nullptr;
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}
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bool PL_H264Encoder::init(void* args)
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{
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H264Encoder_Internal* in = (H264Encoder_Internal*)internal;
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in->reset();
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if (args != nullptr)
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{
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PL_H264Encoder_Config* config = (PL_H264Encoder_Config*)args;
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in->config = *config;
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}
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in->buffer = new uint8_t[in->config.inBufferSize];
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return true;
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}
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void PL_H264Encoder::finit()
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{
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H264Encoder_Internal* in = (H264Encoder_Internal*)internal;
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}
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bool initH264EncoderEnv(H264Encoder_Internal* in)
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{
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av_register_all();
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// find the video encoder
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AVCodec* avCodec = avcodec_find_encoder(AV_CODEC_ID_H264);
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if (!avCodec)
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{
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LOG_ERROR << "codec not found!" << std::endl;
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return false;
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}
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in->pAVCodecContext = avcodec_alloc_context3(avCodec);
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in->pAVCodecContext->bit_rate = in->config.avc_bit_rate;
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in->pAVCodecContext->width = in->config.bytesBufferImageWidth;
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in->pAVCodecContext->height = in->config.bytesBufferImageHeight;
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in->pAVCodecContext->time_base.num = 1;
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in->pAVCodecContext->time_base.den = in->config.avc_fps;
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in->pAVCodecContext->gop_size = in->config.avc_gop;
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in->pAVCodecContext->max_b_frames = in->config.avc_max_b_frames;
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in->pAVCodecContext->pix_fmt = AV_PIX_FMT_YUV420P;
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if (!in->config.av_opt_preset.empty())
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av_opt_set(in->pAVCodecContext->priv_data, "preset", in->config.av_opt_preset.c_str(), 0);
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if (!in->config.av_opt_tune.empty())
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av_opt_set(in->pAVCodecContext->priv_data, "tune", in->config.av_opt_tune.c_str(), 0);
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if (!in->config.avc_profile_str.empty())
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av_opt_set(in->pAVCodecContext->priv_data, "profile", in->config.avc_profile_str.c_str(), 0);
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else
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in->pAVCodecContext->profile = in->config.avc_profile;
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if(avcodec_open2(in->pAVCodecContext, avCodec, NULL) >= 0)
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{
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in->pAVFrame = av_frame_alloc(); // Allocate video frame
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in->pAVFrame->format = in->pAVCodecContext->pix_fmt;
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in->pAVFrame->width = in->pAVCodecContext->width;
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in->pAVFrame->height = in->pAVCodecContext->height;
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int ret = av_image_alloc(in->pAVFrame->data, in->pAVFrame->linesize,
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in->pAVCodecContext->width, in->pAVCodecContext->height,
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in->pAVCodecContext->pix_fmt, 16);
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if (ret < 0)
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{
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LOG_ERROR << "av_image_alloc error" << std::endl;
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return false;
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}
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}
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else
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{
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LOG_ERROR << "avcodec_open2 error" << std::endl;
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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 copyAVFrame(AVFrame* dest, AVFrame* src)
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{
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//#test
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//#define SUBSAMPLE(v, a) ((((v) + (a) - 1)) / (a))
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//int src_width = src->width;
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//int src_height = src->height;
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//int dst_width = dest->width;
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//int dst_height = dest->height;
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//printf("I420Scale sw=%d, sh=%d, dw=%d, dh=%d\n", src_width,src_height,dst_width, dst_height);
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//
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//libyuv::I420Scale(src->data[0], src_width,
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// src->data[1], SUBSAMPLE(src_width, 2),
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// src->data[2], SUBSAMPLE(src_width, 2),
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// src_width, src_height,
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// dest->data[0], dst_width,
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// dest->data[1], SUBSAMPLE(dst_width, 2),
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// dest->data[2], SUBSAMPLE(dst_width, 2),
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// dst_width, dst_height,
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// libyuv::kFilterNone );
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//static size_t f=0;
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//char fname[50];
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//sprintf(fname, "%u.yuv420", ++f);
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//FILE * pFile = fopen (fname,"wb");
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//fwrite (dest->data[0] , sizeof(char), dst_width * dst_height, pFile);
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//fwrite (dest->data[1] , sizeof(char), dst_width * dst_height / 4, pFile);
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//fwrite (dest->data[2] , sizeof(char), dst_width * dst_height / 4, pFile);
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//fclose(pFile);
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dest->data[0] = src->data[0];
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dest->data[1] = src->data[1];
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dest->data[2] = src->data[2];
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//int height = dest->height;
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//int width = dest->width;
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//memcpy(dest->data[0], src->data[0], height * width); // Y
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//memcpy(dest->data[1], src->data[1], height * width / 4); // U
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//memcpy(dest->data[2], src->data[2], height * width / 4); // V
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}
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bool encodeH264(H264Encoder_Internal* in, AVFrame* pAVFrame, timeval pts)
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{
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in->buffSize = 0;
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copyAVFrame(in->pAVFrame, pAVFrame);
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//in->pAVFrame->pts = (1.0 / 25) * 90000 * in->frameCount;
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//in->pAVFrame->pts = time(nullptr);
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//in->pAVFrame->pts = (pts.tv_sec * 1000 * 1000 + pts.tv_usec) / 90000 + in->frameCount;
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//in->pAVFrame->pts = (pts.tv_sec * 1000 * 1000 + pts.tv_usec) / 90000 + ((1.0 / 25) * 90000 * in->frameCount);
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in->pAVFrame->pts = (pts.tv_sec * 1000 * 1000 + pts.tv_usec) / 90000;
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//in->pAVFrame->pts = pAVFrame->pkt_pts;
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//in->pAVFrame->pts = (1.0 / 25) * 90000 * in->frameCount;
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AVPacket pAVPacket = {0};
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av_init_packet(&pAVPacket);
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// encode the image
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int gotPacket = 0;
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int ret = avcodec_encode_video2(in->pAVCodecContext, &pAVPacket, in->pAVFrame, &gotPacket);
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if (ret < 0)
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{
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LOG_WARN << "avcodec_encode_video2 (1) error=" << ret << std::endl;
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return false;
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}
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if (gotPacket > 0)
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{
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in->frameCount++;
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LOGP(DEBUG, "Succeed to encode (1) frame=%d, size=%d", in->frameCount, pAVPacket.size);
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memcpy(in->buffer, pAVPacket.data, pAVPacket.size);//#todo check inBufferSize
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in->buffSize = pAVPacket.size;
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av_free_packet(&pAVPacket);
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}
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//#todo finit
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//Flush Encoder, when stop encoder
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//while (gotPacket > 0)
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//{
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// ret = avcodec_encode_video2(in->pAVCodecContext, &pAVPacket, NULL, &gotPacket);
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// if (ret < 0)
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// {
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// printf("avcodec_encode_video2 (2) error=%d\n", ret);
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// return false;
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// }
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// if (gotPacket > 0)
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// {
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// printf("Succeed to encode (2) frame=%d, size=%d\n", in->frameCount, pAVPacket.size);
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// memcpy(in->buffer + in->buffSize, pAVPacket.data, pAVPacket.size);
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// in->buffSize += pAVPacket.size;
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// av_free_packet(&pAVPacket);
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// }
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//}
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//#test
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//if (in->buffSize > 0)
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//{
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// static FILE * pFile = fopen("out.h264","wba+");
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// fwrite (in->buffer , sizeof(char), in->buffSize, pFile);
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// fflush(pFile);
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//}
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in->payError = (in->buffSize == 0);
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return !(in->payError);
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}
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bool encodeH264(H264Encoder_Internal* in, uint8_t* buffer, timeval pts)
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{
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uint16_t width = in->config.bytesBufferImageWidth;
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uint16_t height = in->config.bytesBufferImageHeight;
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AVFrame avFrame;
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avFrame.width = width;
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avFrame.height = height;
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avFrame.data[0] = buffer;
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avFrame.data[1] = buffer + width*height;
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avFrame.data[2] = buffer + width*height + width*height/4;
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return encodeH264(in, &avFrame, pts);
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}
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bool PL_H264Encoder::pay(const PipeMaterial& pm)
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{
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H264Encoder_Internal* in = (H264Encoder_Internal*)internal;
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in->payError = true;
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if (!in->ffmpegInited)
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{
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MB_Frame* frame = (MB_Frame*)pm.buffer;
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if (frame != nullptr && frame->buffer != nullptr &&
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(in->config.bytesBufferImageWidth == 0 || in->config.bytesBufferImageHeight == 0))
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{
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if (frame->type == MB_Frame::MBFT_PTR_AVFRAME)
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{
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AVFrame* pAVFrame = (AVFrame*)frame->buffer;
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if (pAVFrame != nullptr)
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{
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in->config.bytesBufferImageWidth = pAVFrame->width;
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in->config.bytesBufferImageHeight = pAVFrame->height;
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LOGP(NOTICE, "Set codec size from AVFrame width=%d, height=%d",
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in->config.bytesBufferImageWidth, in->config.bytesBufferImageHeight);
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}
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}
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else if (frame->type == MB_Frame::MBFT_YUV420)
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{
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in->config.bytesBufferImageWidth = frame->width;
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in->config.bytesBufferImageHeight = frame->height;
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LOGP(NOTICE, "Set codec size from frame width=%d, height=%d",
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in->config.bytesBufferImageWidth, in->config.bytesBufferImageHeight);
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}
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}
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bool ret = initH264EncoderEnv(in);
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if (!ret)
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{
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LOG_ERROR << "initH264EncoderEnv error" << std::endl;
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return false;
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}
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else
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in->ffmpegInited = true;
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}
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if (pm.type != PipeMaterial::PMT_FRAME)
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{
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LOG_ERROR << "Only support PMT_FRAME" << std::endl;
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return false;
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}
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if (pm.buffer == nullptr)
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return false;
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MB_Frame* frame = (MB_Frame*)pm.buffer;
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bool ret;
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if (frame->type == MB_Frame::MBFT_PTR_AVFRAME)
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ret = encodeH264(in, (AVFrame*)(frame->buffer), frame->pts);
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else if (frame->type == MB_Frame::MBFT_YUV420)
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ret = encodeH264(in, (uint8_t*)(frame->buffer), frame->pts);
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else
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{
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LOG_ERROR << "Only support MBFT_PTR_AVFRAME / MBFT_YUV420" << std::endl;
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in->payError = true;
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return false;
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}
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in->payError = !ret;
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if (ret)
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{
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in->lastFrame.type = MB_Frame::MBFT_H264_NALU;
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in->lastFrame.buffer = in->buffer;
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in->lastFrame.buffSize = in->buffSize;
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in->lastFrame.width = frame->width;
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in->lastFrame.height = frame->height;
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if (in->config.resetPTS)
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gettimeofday(&(in->lastFrame.pts),NULL);
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else
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in->lastFrame.pts = frame->pts;
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}
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return ret;
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}
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bool PL_H264Encoder::gain(PipeMaterial& pm)
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{
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H264Encoder_Internal* in = (H264Encoder_Internal*)internal;
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if (!in->payError)
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{
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pm.type = PipeMaterial::PMT_FRAME;
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pm.buffer = &(in->lastFrame);
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pm.buffSize = 0;
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}
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pm.former = this;
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return !in->payError;
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}
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