nvmpi_decoder_get_frame function return -1 in C++

[GiBeom-Song]

Here is my test code to utilize jetson-ffmpeg.

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <cassert>
#include <iostream>
#include <sys/time.h>
#include <fstream>

#include <chrono>
#include <ctime>
#include <cstdio>

#include <cstdlib>
#include <thread>
#include <mutex>

#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>

#include <dirent.h>
#include <fstream>
#include <FreeImage.h>
#include <vector>

extern "C"{
    #include <nvmpi.h>
    #include "jetson_ffmpeg/avcodec.h"
    #include "jetson_ffmpeg/decode.h"
    #include "jetson_ffmpeg/internal.h"
    #include <libavcodec/avcodec.h>
    #include <libavutil/buffer.h>
    #include <libavutil/common.h>
    #include <libavutil/frame.h>
    #include <libavcodec/avcodec.h>
    #include <libavformat/avformat.h>
    #include <libavutil/pixdesc.h>
    #include <libavutil/hwcontext.h>
    #include <libavutil/hwcontext_drm.h>
    #include <libavutil/opt.h>
    #include <libavutil/avassert.h>
    #include <libavutil/imgutils.h>
    #include <libavutil/log.h>
}

using namespace std;
static AVBufferRef *hw_device_ctx = NULL;
enum AVHWDeviceType type; 
static enum AVPixelFormat hw_pix_fmt;

typedef struct {
    char eos_reached;
    nvmpictx* ctx;
    AVClass *av_class;
} nvmpiDecodeContext;

static int hw_decoder_init(AVCodecContext *ctx, const enum AVHWDeviceType type)
{
    int err = 0;

    if ((err = av_hwdevice_ctx_create(&hw_device_ctx, type,
                                      NULL, NULL, 0)) < 0) {
        fprintf(stderr, "Failed to create specified HW device.\n");
        return err;
    }
    ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);

    return err;
}

static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
                                        const enum AVPixelFormat *pix_fmts)
{
    const enum AVPixelFormat *p;

    for (p = pix_fmts; *p != -1; p++) {
        if (*p == hw_pix_fmt)
            return *p;
    }

    fprintf(stderr, "Failed to get HW surface format.\n");
    return AV_PIX_FMT_NONE;
}



static nvCodingType nvmpi_get_codingtype(AVCodecContext *avctx)
{
    switch (avctx->codec_id) {
        case AV_CODEC_ID_H264:          return NV_VIDEO_CodingH264;
        case AV_CODEC_ID_HEVC:          return NV_VIDEO_CodingHEVC;
        case AV_CODEC_ID_VP8:           return NV_VIDEO_CodingVP8;
        case AV_CODEC_ID_VP9:           return NV_VIDEO_CodingVP9;
        case AV_CODEC_ID_MPEG4:     return NV_VIDEO_CodingMPEG4;
        case AV_CODEC_ID_MPEG2VIDEO:    return NV_VIDEO_CodingMPEG2;
        default:                        return NV_VIDEO_CodingUnused;
    }
};
static int nvmpi_init_decoder(AVCodecContext *avctx){
    int ret=0;

    nvmpiDecodeContext *nvmpi_context = (nvmpiDecodeContext *)avctx->priv_data;
    nvCodingType codectype=NV_VIDEO_CodingUnused;

    codectype =nvmpi_get_codingtype(avctx); // NV_VIDEO_CodingH264

    if (codectype == NV_VIDEO_CodingUnused) {
        av_log(avctx, AV_LOG_ERROR, "Unknown codec type (%d).\n", avctx->codec_id);
        ret = AVERROR_UNKNOWN;
        return ret;
    }

    nvmpi_context->ctx=nvmpi_create_decoder(codectype,NV_PIX_YUV420);

    if(!nvmpi_context->ctx){
        av_log(avctx, AV_LOG_ERROR, "Failed to nvmpi_create_decoder (code = %d).\n", ret);
        ret = AVERROR_UNKNOWN;
        return ret;
    }
    return ret;
}

static int nvmpi_close(AVCodecContext *avctx){

    nvmpiDecodeContext *nvmpi_context = (nvmpiDecodeContext *)avctx->priv_data;
    return nvmpi_decoder_close(nvmpi_context->ctx);
}


static int nvmpi_decode(AVCodecContext *avctx,void *data,int *got_frame, AVPacket *avpkt){

    //nvmpiDecodeContext *nvmpi_context = avctx->priv_data;
    nvmpiDecodeContext *nvmpi_context = (nvmpiDecodeContext*)avctx->priv_data;
    AVFrame *frame = (AVFrame *)data;
    nvFrame _nvframe={0};
    nvPacket packet;
    uint8_t* ptrs[3];
    int res,linesize[3];

    if(avpkt->size){
        packet.payload_size=avpkt->size;
        packet.payload=avpkt->data;
        packet.pts=avpkt->pts;

        res=nvmpi_decoder_put_packet(nvmpi_context->ctx,&packet);
        cout << "RES TEST:" << res << endl;
    }

    res=nvmpi_decoder_get_frame(nvmpi_context->ctx,&_nvframe,avctx->flags & AV_CODEC_FLAG_LOW_DELAY);

    cout << "decode RES:" << res << endl;

    if(res<0)
        return avpkt->size;

    //if (ff_get_buffer(avctx, frame, 0) < 0) {
        //return AVERROR(ENOMEM);
    //}

    int ret;
    ret = avcodec_receive_frame(avctx, frame);
    cout << "TEST" << ret << endl;
        //return AVERROR(ENOMEM);

    linesize[0]=_nvframe.linesize[0];
    linesize[1]=_nvframe.linesize[1];
    linesize[2]=_nvframe.linesize[2];

    cout << "TEST" << endl;
    cout << linesize[0] << endl;
    cout << linesize[1] << endl;
    cout << linesize[2] << endl;

    ptrs[0]=_nvframe.payload[0];
    ptrs[1]=_nvframe.payload[1];
    ptrs[2]=_nvframe.payload[2];

    av_image_copy(frame->data, frame->linesize, (const uint8_t **) ptrs, linesize, avctx->pix_fmt, _nvframe.width,_nvframe.height);

    frame->width=_nvframe.width;
    frame->height=_nvframe.height;

    frame->format=AV_PIX_FMT_YUV420P;
    frame->pts=_nvframe.timestamp;
    frame->pkt_dts = AV_NOPTS_VALUE;

    avctx->coded_width=_nvframe.width;
    avctx->coded_height=_nvframe.height;
    avctx->width=_nvframe.width;
    avctx->height=_nvframe.height;

    *got_frame = 1;
    return avpkt->size;
}
int main(){
    AVFormatContext *input_ctx = NULL;
    AVInputFormat *input_fmt;
    int video_stream, ret;
    AVStream *video = NULL;
    AVCodecContext *decoder_ctx = NULL;
    AVCodec *decoder = NULL;
    AVPacket packet;
    double fps;

    // Jetson nano testing 
    int ret2;
    nvmpictx *ctx_nvmpi = NULL;
    nvPacket packet_nvmpi;
    int got_frame;


    string path = "sample_convert5.h264";
    //string path = "/usr/src/jetson_multimedia_api/data/Video/sample_outdoor_car_1080p_10fps.h264";
    input_fmt = av_find_input_format("h264_nvmpi");


    //if (avformat_open_input(&input_ctx, path.c_str(), input_fmt, NULL) != 0){
    if (avformat_open_input(&input_ctx, path.c_str(), NULL, NULL) != 0){
        avformat_close_input(&input_ctx);
        cout << "FORMAT OPEN ERROR" << endl;
        return -1;
    }

    if (avformat_find_stream_info(input_ctx, NULL) < 0) {
        fprintf(stderr, "Cannot find input stream information.\n");
        return -1;
    }

    /* find the video stream information */
    ret = av_find_best_stream(input_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
    if (ret < 0) {
        fprintf(stderr, "Cannot find a video stream in the input file\n");
        return -1;
    }
    video_stream = ret;

    //decoder_ctx = input_ctx->streams[video_stream]->codec; 
    decoder = avcodec_find_decoder(AV_CODEC_ID_H264);
    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
        return AVERROR(ENOMEM);

    ret = avcodec_open2(decoder_ctx, decoder, NULL);
    cout << "DECODEROPEN:" << ret << endl;

    ret = nvmpi_init_decoder(decoder_ctx);
    cout << ret << endl;
    if (ret == AVERROR_UNKNOWN)
        cout << "NVMPI_INIT_ERROR" << endl;

    AVFrame *frame;

    for(int i = 0; i<5; i ++){
        cout << "PRINT TEST" << endl;
        if ((ret = av_read_frame(input_ctx, &packet)) < 0){
            cout << "[DEBUG] FRAME_READ_FAILED" << endl;
            packet.data = NULL;
            packet.size = 0;
            av_packet_unref(&packet);
            return -1;
        }

        //AVFrame *frame = NULL; 
        ret = nvmpi_decode(decoder_ctx, frame, &got_frame, &packet);
        //ret = nvmpi_decode(decoder_ctx, packet.data, &got_frame, &packet); 
        cout << "decode ret:" << ret << endl;
        cout << "frame:" << frame << endl;
    }

    cout << "TEST" << endl;
    nvmpi_close(decoder_ctx);
    cout << "TEST" << endl;

    return 0;

The result of test code is like that

How can I use jetson-ffmpeg to decode frames in C++? Also, ff_get_buffer cause linking error (undefined reference to ff_get_buffer)

[ou525]

@GiBeom-Song Is the problem solved?