#include <stdio.h> #define __STDC_CONSTANT_MACROS #ifdef _WIN32 //Windows extern "C" { #include "libavutil/opt.h" #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" }; #else //Linux... #ifdef __cplusplus extern "C" { #endif #include <libavutil/opt.h> #include <libavcodec/avcodec.h> #include <libavformat/avformat.h> #ifdef __cplusplus }; #endif #endif int _flush_encoder(AVFormatContext *fmt_ctx, unsigned int stream_index){ int ret; int got_frame; AVPacket enc_pkt; if (!(fmt_ctx->streams[stream_index]->codec->codec->capabilities)) return 0; while (1) { enc_pkt.data = NULL; enc_pkt.size = 0; av_init_packet(&enc_pkt); ret = avcodec_encode_video2(fmt_ctx->streams[stream_index]->codec, &enc_pkt, NULL, &got_frame); av_frame_free(NULL); if (ret < 0) break; if (!got_frame){ ret = 0; break; } printf("Flush Encoder: Succeed to encode 1 frame!\tsize:%5d\n", enc_pkt.size); /* mux encoded frame */ ret = av_write_frame(fmt_ctx, &enc_pkt); if (ret < 0) break; } return ret; } int main(int argc, char* argv[]) { AVFormatContext* pFormatCtx; AVOutputFormat* fmt; AVStream* video_st; AVCodecContext* pCodecCtx; AVCodec* pCodec; AVPacket pkt; uint8_t* picture_buf; AVFrame* pFrame; int picture_size; int y_size; int framecnt = 0; FILE *in_file = fopen("./sintel_480x272_yuv420p.yuv", "rb"); //Input raw YUV data int in_w = 480, in_h = 272; //Input data's width and height int framenum = 100; //Frames to encode //const char* out_file = "src01.h264"; //Output Filepath //const char* out_file = "src01.ts"; //const char* out_file = "src01.hevc"; const char* out_file = "sintel.h264"; av_register_all(); //Method1. pFormatCtx = avformat_alloc_context(); //Guess Format fmt = av_guess_format(NULL, out_file, NULL); pFormatCtx->oformat = fmt; //Method 2. //avformat_alloc_output_context2(&pFormatCtx, NULL, NULL, out_file); //fmt = pFormatCtx->oformat; //Open output URL if (avio_open(&pFormatCtx->pb, out_file, AVIO_FLAG_READ_WRITE) < 0){ printf("Failed to open output file! \n"); return -1; } video_st = avformat_new_stream(pFormatCtx, 0); //video_st->time_base.num = 1; //video_st->time_base.den = 25; if (video_st == NULL){ return -1; } //Param that must set pCodecCtx = video_st->codec; //pCodecCtx->codec_id =AV_CODEC_ID_HEVC; pCodecCtx->codec_id = fmt->video_codec; pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO; pCodecCtx->pix_fmt = AV_PIX_FMT_YUV420P; pCodecCtx->width = in_w; pCodecCtx->height = in_h; pCodecCtx->bit_rate = 400000; pCodecCtx->gop_size = 250; pCodecCtx->time_base.num = 1; pCodecCtx->time_base.den = 25; //H264 //pCodecCtx->me_range = 16; //pCodecCtx->max_qdiff = 4; //pCodecCtx->qcompress = 0.6; pCodecCtx->qmin = 10; pCodecCtx->qmax = 51; //Optional Param pCodecCtx->max_b_frames = 3; // Set Option AVDictionary *param = 0; //H.264 if (pCodecCtx->codec_id == AV_CODEC_ID_H264) { av_dict_set(¶m, "preset", "slow", 0); av_dict_set(¶m, "tune", "zerolatency", 0); //av_dict_set(¶m, "profile", "main", 0); } //H.265 if (pCodecCtx->codec_id == AV_CODEC_ID_H265){ av_dict_set(¶m, "preset", "ultrafast", 0); av_dict_set(¶m, "tune", "zero-latency", 0); } //Show some Information av_dump_format(pFormatCtx, 0, out_file, 1); pCodec = avcodec_find_encoder(pCodecCtx->codec_id); if (!pCodec){ printf("Can not find encoder! \n"); return -1; } if (avcodec_open2(pCodecCtx, pCodec, ¶m) < 0){ printf("Failed to open encoder! \n"); return -1; } pFrame = av_frame_alloc(); picture_size = avpicture_get_size(pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height); picture_buf = (uint8_t *)av_malloc(picture_size); avpicture_fill((AVPicture *)pFrame, picture_buf, pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height); //Write File Header avformat_write_header(pFormatCtx, NULL); av_new_packet(&pkt, picture_size); y_size = pCodecCtx->width * pCodecCtx->height; for (int i = 0; i<framenum; i++){ //Read raw YUV data if (fread(picture_buf, 1, y_size * 3 / 2, in_file) <= 0){ printf("Failed to read raw data! \n"); return -1; } else if (feof(in_file)){ break; } pFrame->data[0] = picture_buf; // Y pFrame->data[1] = picture_buf + y_size; // U pFrame->data[2] = picture_buf + y_size * 5 / 4; // V //PTS //pFrame->pts=i; pFrame->pts = i*(video_st->time_base.den) / ((video_st->time_base.num) * 25); int got_picture = 0; //Encode int ret = avcodec_encode_video2(pCodecCtx, &pkt, pFrame, &got_picture); if (ret < 0){ printf("Failed to encode! \n"); return -1; } if (got_picture == 1){ printf("Succeed to encode frame: %5d\tsize:%5d\n", framecnt, pkt.size); framecnt++; pkt.stream_index = video_st->index; ret = av_write_frame(pFormatCtx, &pkt); av_free_packet(&pkt); } } //Flush Encoder int ret = _flush_encoder(pFormatCtx, 0); if (ret < 0) { printf("Flushing encoder failed\n"); return -1; } //Write file trailer av_write_trailer(pFormatCtx); //Clean if (video_st){ avcodec_close(video_st->codec); av_free(pFrame); av_free(picture_buf); } avio_close(pFormatCtx->pb); avformat_free_context(pFormatCtx); fclose(in_file); return 0; }
