ni_xcoder_transcode_filter.c

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/*******************************************************************************
 *
 * Copyright (C) 2022 NETINT Technologies
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * furnished to do so, subject to the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 ******************************************************************************/
 
/*!*****************************************************************************
 *  \file   ni_xcoder_transcode_filter.c
 *
 *  \brief  Video transcoding and filtering demo application directly using
 *          Netint Libxcoder API
 ******************************************************************************/
 
#include "ni_generic_utils.h"
#include "ni_decode_utils.h"
#include "ni_encode_utils.h"
#include "ni_filter_utils.h"
#include "ni_log.h"
#include "ni_util.h"
 
#ifdef _WIN32
#include "ni_getopt.h"
#elif __linux__ || __APPLE__
#include <getopt.h>
#include <unistd.h>
#endif
 
static void print_usage(void)
{
    ni_log(NI_LOG_ERROR,
        "Video transcoding demo application directly using Netint Libxcoder version %s\n"
        "Usage: ni_xcoder_transcode_filter [options]\n"
        "\n"
        "options:\n"
        "-h | --help                    Show this message.\n"
        "-v | --version                 Print version info.\n"
        "-i | --input                   (Required) Input file path.\n"
        "-o | --output                  (Required) Output file path.\n"
        "                               Can be specified multiple (max %d) times\n"
        "                               to run multiple encoding instances simultaneously.\n"
        "-m | --dec-codec               (Required) Decoder codec format. Must match the codec of input file.\n"
        "                               [a|avc, h|hevc, v|vp9]\n"
        "-n | --enc-codec               (Required) Encoder codec format.\n"
        "                               [a|avc, h|hevc, x|av1] (x is in ivf container format)\n"
        "-l | --loglevel                Set loglevel of this application and libxcoder API.\n"
        "                               [none, fatal, error, info, debug, trace]\n"
        "                               (Default: info)\n"
        "-c | --card                    Set card index to use.\n"
        "                               See `ni_rsrc_mon` for info of cards on system.\n"
        "                               (Default: 0)\n"
        "-r | --repeat                  To loop input X times. Must be a positive integer\n"
        "                               (Default: 1)\n"
        "-d | --decoder-params          Decoding params. See \"Decoding Parameters\" chapter in\n"
        "                               QuadraIntegration&ProgrammingGuide*.pdf for help.\n"
        "                               (Default: \"\")\n"
        "-e | --encoder-params          Encoding params. See \"Encoding Parameters\" chapter in\n"
        "                               QuadraIntegration&ProgrammingGuide*.pdf for help.\n"
        "                               Can be specified multiple (max %d) times,\n"
        "                               must match the number of -o specified.\n"
        "                               (Default: \"\")\n"
        "-g | --encoder-gop             Custom GOP for encoding. See \"Custom Gop Structure\" chapter in\n"
        "                               QuadraIntegration&ProgrammingGuide*.pdf for help.\n"
        "                               gopPresetIdx must be set to 0 to be in effect.\n"
        "                               (Default: \"\")\n"
        "-u | --user-data-sei-passthru  (No argument) Enable user data unregistered SEI passthrough when specified\n"
        "-f | --vf                      Video filter params. The only supported filters in this demo are:\n"
        "                               ni_quadra_scale - supported params [width, height, format]\n"
        "                               e.g. ni_quadra_scale=width=1280:height=720:format=yuv420p\n"
        "                               ni_quadra_drawbox - supported params [x, y, width, height]\n"
        "                               e.g. ni_quadra_drawbox=x=300:y=150:width=600:height=400\n"
        "                               (Default: \"\")\n"
        , NI_XCODER_REVISION, MAX_OUTPUT_FILES, MAX_OUTPUT_FILES);
}
 
int main(int argc, char *argv[])
{
    int i, ret = 0;
    ni_demo_context_t ctx = {0};
    char in_filename[FILE_NAME_LEN] = {0};
    char out_filename[MAX_OUTPUT_FILES][FILE_NAME_LEN] = {0};
    FILE *output_fp[MAX_OUTPUT_FILES] = {0};
    int o_index = 0, e_index = 0, g_index = 0, f_index = 0;
    int output_total = 0;
    int input_width = 0, input_height = 0, bit_depth = 8;
    int output_width[MAX_OUTPUT_FILES] = {0};
    int output_height[MAX_OUTPUT_FILES] = {0};
    int dec_codec_format = -1, enc_codec_format = -1;
    ni_log_level_t log_level;
    int xcoderGUID = 0;
    char *n;
    char dec_conf_params[2048] = {0};
    char filter_conf_params[MAX_OUTPUT_FILES][2048] = {0};
    char enc_conf_params[MAX_OUTPUT_FILES][2048] = {0};
    char enc_gop_params[MAX_OUTPUT_FILES][2048] = {0};
    int user_data_sei_passthru = 0;
    ni_h264_sps_t avc_sps = {0};
    ni_h265_sps_t hevc_sps = {0};
    ni_vp9_header_info_t vp9_info = {0};
    ni_xcoder_params_t *p_dec_api_param = NULL;
    ni_xcoder_params_t *p_enc_api_param = NULL;
    ni_session_context_t dec_ctx = {0};
    ni_session_context_t enc_ctx[MAX_OUTPUT_FILES] = {0};
    ni_session_context_t sca_ctx[MAX_OUTPUT_FILES] = {0};
    ni_session_context_t crop_ctx = {0};
    ni_session_context_t pad_ctx = {0};
    ni_session_context_t ovly_ctx = {0};
    ni_session_context_t fmt_ctx = {0};
    int send_rc = NI_TEST_RETCODE_SUCCESS, receive_rc = NI_TEST_RETCODE_SUCCESS, rx_size = 0;
    void *p_stream_info = NULL;
    int fps_num = 30, fps_den = 1, bitrate = 200000;
    uint64_t current_time, previous_time;
    ni_session_data_io_t in_pkt = {0};
    ni_session_data_io_t out_frame = {0};
    ni_session_data_io_t filter_out_frame[MAX_OUTPUT_FILES] = {0};
    ni_session_data_io_t *frame_to_enc[MAX_OUTPUT_FILES];
    ni_session_data_io_t enc_in_frame = {0};
    ni_session_data_io_t out_packet[MAX_OUTPUT_FILES] = {0};
    niFrameSurface1_t *p_hwframe = NULL;
    niFrameSurface1_t *p_hwframe2[MAX_OUTPUT_FILES];
    int encoder_opened = 0, end_of_all_streams = 0;
    ni_scale_params_t scale_params[MAX_OUTPUT_FILES] = {0};
    ni_drawbox_params_t drawbox_params = {0};
    ni_pix_fmt_t enc_pix_fmt[MAX_OUTPUT_FILES];
    int hw_frame_ref_flag = 0;
    int recycle_hw_frame_for_scaler = 0;
 
    int opt;
    int opt_index;
    const char *opt_string = "hvi:o:m:n:l:c:r:d:e:g:uf:";
    static struct option long_options[] = {
        {"help", no_argument, NULL, 'h'},
        {"version", no_argument, NULL, 'v'},
        {"input", required_argument, NULL, 'i'},
        {"output", required_argument, NULL, 'o'},
        {"dec-codec", required_argument, NULL, 'n'},
        {"enc-codec", required_argument, NULL, 'm'},
        {"loglevel", required_argument, NULL, 'l'},
        {"card", required_argument, NULL, 'c'},
        {"repeat", required_argument, NULL, 'r'},
        {"decoder-params", required_argument, NULL, 'd'},
        {"encoder-params", required_argument, NULL, 'e'},
        {"encoder-gop", required_argument, NULL, 'g'},
        {"user-data-sei-passthru", no_argument, NULL, 'u'},
        {"vf", required_argument, NULL, 'f'},
        {NULL, 0, NULL, 0},
    };
 
    while ((opt = getopt_long(argc, argv, opt_string, long_options, &opt_index)) != -1)
    {
        switch (opt)
        {
            case 'h':
                print_usage();
                ret = 0;
                goto end;
            case 'v':
                print_version();
                ret = 0;
                goto end;
            case 'i':
                ni_strcpy(in_filename, FILE_NAME_LEN, optarg);
                break;
            case 'o':
                if (o_index == MAX_OUTPUT_FILES)
                {
                    ni_log(NI_LOG_ERROR, "Error: number of output files cannot exceed %d\n", MAX_OUTPUT_FILES);
                    ret = -1;
                    goto end;
                }
 
                for (i = 0; i < o_index; i++)
                {
                    if (0 == strcmp(out_filename[i], optarg))
                    {
                        ni_log(NI_LOG_ERROR, "Error: output file names must be unique: %s\n", optarg);
                        ret = -1;
                        goto end;
                    }
                }
 
                ni_strcpy(out_filename[o_index], FILE_NAME_LEN, optarg);
                o_index++;
                break;
            case 'm':
                // Accept both upper and lower case
                for (i = 0; i < strlen(optarg); i++)
                {
                    optarg[i] = (char)tolower((unsigned char)optarg[i]);
                }
                if (strcmp(optarg, "a") == 0 || strcmp(optarg, "avc") == 0)
                {
                    dec_codec_format = NI_CODEC_FORMAT_H264;
                }
                else if (strcmp(optarg, "h") == 0 || strcmp(optarg, "hevc") == 0)
                {
                    dec_codec_format = NI_CODEC_FORMAT_H265;
                }
                else if (strcmp(optarg, "v") == 0 || strcmp(optarg, "vp9") == 0)
                {
                    dec_codec_format = NI_CODEC_FORMAT_VP9;
                }
                else
                {
                    ni_log(NI_LOG_ERROR, "Error: Invalid value \"%s\" for -m | --dec-codec option\n"
                           "Must be one of [a|avc, h|hevc, v|vp9]\n", optarg);
                    ret = -1;
                    goto end;
                }
                break;
            case 'n':
                // Accept both upper and lower case
                for (i = 0; i < strlen(optarg); i++)
                {
                    optarg[i] = (char)tolower((unsigned char)optarg[i]);
                }
                if (strcmp(optarg, "a") == 0 || strcmp(optarg, "avc") == 0)
                {
                    enc_codec_format = NI_CODEC_FORMAT_H264;
                }
                else if (strcmp(optarg, "h") == 0 || strcmp(optarg, "hevc") == 0)
                {
                    enc_codec_format = NI_CODEC_FORMAT_H265;
                }
                else if (strcmp(optarg, "x") == 0 || strcmp(optarg, "av1") == 0)
                {
                    enc_codec_format = NI_CODEC_FORMAT_AV1;
                }
                else
                {
                    ni_log(NI_LOG_ERROR, "Error: Invalid value \"%s\" for -n | --enc-codec option\n"
                           "Must be one of [a|avc, h|hevc, x|av1]\n", optarg);
                    ret = -1;
                    goto end;
                }
                break;
            case 'l':
                log_level = arg_to_ni_log_level(optarg);
                if (log_level != NI_LOG_INVALID)
                {
                    ni_log_set_level(log_level);
                }
                else
                {
                    ni_log(NI_LOG_ERROR, "Error: Invalid value \"%s\" for -l | --loglevel option\n"
                           "Must be one of [none, fatal, error, info, debug, trace]\n", optarg);
                    ret = -1;
                    goto end;
                }
                break;
            case 'c':
                xcoderGUID = (int)strtol(optarg, &n, 10);
                if (n == optarg || *n != '\0' || xcoderGUID < 0)
                {
                    ni_log(NI_LOG_ERROR, "Error: Invalid value \"%s\" for -c | --card option\n"
                           "Must be a non-negative integer\n", optarg);
                    ret = -1;
                    goto end;
                }
                break;
            case 'r':
                ctx.loops_left = strtol(optarg, &n, 10);
                if (n == optarg || *n != '\0' || !(ctx.loops_left >= 1))
                {
                    ni_log(NI_LOG_ERROR, "Error: Invalid value \"%s\" for -r | --repeat option\n"
                           "Must be a positive integer\n", optarg);
                    ret = -1;
                    goto end;
                }
                break;
            case 'd':
                ni_strcpy(dec_conf_params, sizeof(dec_conf_params), optarg);
                break;
            case 'e':
                if (e_index == MAX_OUTPUT_FILES)
                {
                    ni_log(NI_LOG_ERROR, "Error: number of encoder config cannot exceed %d\n", MAX_OUTPUT_FILES);
                    ret = -1;
                    goto end;
                }
                ni_strcpy(enc_conf_params[e_index], sizeof(enc_conf_params[e_index]), optarg);
                e_index++;
                break;
            case 'g':
                if (g_index == MAX_OUTPUT_FILES)
                {
                    ni_log(NI_LOG_ERROR, "Error: number of encoder gop settings cannot exceed %d\n", MAX_OUTPUT_FILES);
                    ret = -1;
                    goto end;
                }
                ni_strcpy(enc_gop_params[g_index], sizeof(enc_gop_params[g_index]), optarg);
                g_index++;
                break;
            case 'u':
                user_data_sei_passthru = 1;
                break;
            case 'f':
                if (f_index == MAX_OUTPUT_FILES)
                {
                    ni_log(NI_LOG_ERROR, "Error: number of filter config cannot exceed %d\n", MAX_OUTPUT_FILES);
                    ret = -1;
                    goto end;
                }
                ni_strcpy(filter_conf_params[f_index], sizeof(filter_conf_params[f_index]), optarg);
                f_index++;
                break;
            default:
                print_usage();
                ret = -1;
                goto end;
        }
    }
 
    if (!in_filename[0]) {
        ni_log(NI_LOG_ERROR, "Error: Missing input file argument (-i | --input)\n");
        ret = -1;
        goto end;
    }
 
    if (o_index == 0) {
        ni_log(NI_LOG_ERROR, "Error: Missing output file argument (-o | --output)\n");
        ret = -1;
        goto end;
    }
 
    if (dec_codec_format == -1) {
        ni_log(NI_LOG_ERROR, "Error: Missing decoder codec argument (-m | --dec-codec)\n");
        ret = -1;
        goto end;
    }
 
    if (enc_codec_format == -1) {
        ni_log(NI_LOG_ERROR, "Error: Missing encoder codec argument (-n | --enc-codec)\n");
        ret = -1;
        goto end;
    }
 
    ret = read_and_cache_file(&ctx, in_filename);
    if (ret)
    {
        ni_log(NI_LOG_ERROR, "Error: Read input file failure\n");
        goto end;
    }
 
    output_total = o_index;
    for (i = 0; i < output_total; i++)
    {
        if (strcmp(out_filename[i], "null") != 0 &&
            strcmp(out_filename[i], "/dev/null") != 0)
        {
            output_fp[i] = NULL;
            ni_fopen(&(output_fp[i]), out_filename[i], "wb");
            if (!output_fp[i])
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to open %s\n", out_filename[i]);
                ret = -1;
                goto end;
            }
            ni_log(NI_LOG_INFO, "Opened output file: %s\n", out_filename[i]);
        } else
        {
            output_fp[i] = NULL;
            ni_log(NI_LOG_INFO, "Note: Requested NULL output for index %d, no output file will be generated\n", i);
        }
 
        frame_to_enc[i] = NULL;
        enc_pix_fmt[i] = NI_PIX_FMT_YUV420P;
        p_hwframe2[i] = NULL;
    }
 
    p_dec_api_param = malloc(sizeof(ni_xcoder_params_t));
    if (!p_dec_api_param)
    {
        ni_log(NI_LOG_ERROR, "Error: failed to allocate p_dec_api_param\n");
        ret = -1;
        goto end;
    }
 
    p_enc_api_param = calloc(output_total, sizeof(ni_xcoder_params_t));
    if (!p_enc_api_param)
    {
        ni_log(NI_LOG_ERROR, "Error: Failed to allocate memory for p_enc_api_param\n");
        ret = -1;
        goto end;
    }
 
    if (dec_codec_format == NI_CODEC_FORMAT_H264)
    {
        ret = probe_h264_stream_info(&ctx, &avc_sps);
        if (ret)
        {
            ni_log(NI_LOG_ERROR,
                   "ERROR: Failed to probe input file as H.264, file format not supported!\n");
            goto end;
        }
 
        bit_depth = avc_sps.bit_depth_luma;
        input_width = avc_sps.width;
        input_height = avc_sps.height;
        ni_log(NI_LOG_DEBUG, "Using probed H.264 source info: %d bits, resolution %dx%d\n",
               bit_depth, input_width, input_height);
    } else if (dec_codec_format == NI_CODEC_FORMAT_H265)
    {
        ret = probe_h265_stream_info(&ctx, &hevc_sps);
        if (ret)
        {
            ni_log(NI_LOG_ERROR,
                   "ERROR: Failed to probe input file as H.265, file format not supported!\n");
            goto end;
        }
        bit_depth = hevc_sps.bit_depth_chroma;
        input_width = (int)(hevc_sps.width -
                      (hevc_sps.pic_conf_win.left_offset +
                       hevc_sps.pic_conf_win.right_offset));
        input_height = (int)(hevc_sps.height -
                       (hevc_sps.pic_conf_win.top_offset +
                        hevc_sps.pic_conf_win.bottom_offset));
        ni_log(NI_LOG_INFO, "Using probed H.265 source info: %d bits, resolution %dx%d\n",
               bit_depth, input_width, input_height);
    } else if (dec_codec_format == NI_CODEC_FORMAT_VP9)
    {
        ret = probe_vp9_stream_info(&ctx, &vp9_info);
        if (ret)
        {
            ni_log(NI_LOG_ERROR,
                    "ERROR: Failed to probe input file as VP9, file format not supported!\n");
            goto end;
        }
        bit_depth = vp9_info.profile ? 10 : 8;
        input_width = vp9_info.width;
        input_height = vp9_info.height;
        ni_log(NI_LOG_INFO,
               "Using probed VP9 source info: %d bits, resolution %dx%d, timebase %u/%u\n",
               bit_depth, input_width, input_height,
               vp9_info.timebase.den, vp9_info.timebase.num);
    }
 
    // set up decoder config params with some hard-coded values
    ret = ni_decoder_init_default_params(p_dec_api_param, 25, 1, 200000, input_width, input_height);
    if (ret)
    {
        ni_log(NI_LOG_ERROR, "Error: Failed to init default decoder config\n");
        goto end;
    }
 
    ret = ni_device_session_context_init(&dec_ctx);
    if (ret)
    {
        ni_log(NI_LOG_ERROR, "Error: Failed to init decoder context\n");
        goto end;
    }
 
    dec_ctx.codec_format = dec_codec_format;
    dec_ctx.src_bit_depth = bit_depth;
    dec_ctx.bit_depth_factor = 1;
    if (10 == dec_ctx.src_bit_depth)
    {
        dec_ctx.bit_depth_factor = 2;
    }
    if ((NI_CODEC_FORMAT_H264 == dec_codec_format) || (NI_CODEC_FORMAT_H265 == dec_codec_format))
        dec_ctx.enable_user_data_sei_passthru = user_data_sei_passthru;
 
    // check and set ni_decoder_params from --xcoder-params
    ret = ni_retrieve_decoder_params(dec_conf_params, p_dec_api_param, &dec_ctx);
    if (ret)
    {
        ni_log(NI_LOG_ERROR, "Error: decoder config params parsing error\n");
        goto end;
    }
 
    // Decode, use all the parameters specified by user
    ret = decoder_open_session(&dec_ctx, xcoderGUID, p_dec_api_param);
    if (ret)
    {
        ni_log(NI_LOG_ERROR, "Error: Failed to open decoder session\n");
        goto end;
    }
 
    for (i = 0; i < output_total; i++)
    {
        if (ni_device_session_context_init(&enc_ctx[i]) < 0)
        {
            ni_log(NI_LOG_ERROR, "Error: init encoder %d context error\n", i);
            ret = -1;
            goto end;
        }
    }
 
    for (i = 0; i < output_total; i++)
    {
        enc_ctx[i].codec_format = enc_codec_format;
        output_width[i] = input_width;
        output_height[i] = input_height;
    }
 
    if (dec_codec_format == NI_CODEC_FORMAT_H264)
        p_stream_info = &avc_sps;
    else if (dec_codec_format == NI_CODEC_FORMAT_H265)
        p_stream_info = &hevc_sps;
    else if (dec_codec_format == NI_CODEC_FORMAT_VP9)
    {
        p_stream_info = &vp9_info;
        fps_num = vp9_info.timebase.den;
        fps_den = vp9_info.timebase.num;
    }
 
    for (i = 0; i < output_total; i++)
    {
        if (filter_conf_params[i][0])
        {
            if (!dec_ctx.hw_action) {
                ni_log(NI_LOG_ERROR, "Error: filters are only supported when hwframe is enabled (out=hw)\n");
                ret = -1;
                goto end;
            }
 
            ret = retrieve_filter_params(filter_conf_params[i], &scale_params[i], &drawbox_params);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: failed to parse filter parameters: %s\n", filter_conf_params[i]);
                goto end;
            }
        }
 
        if (scale_params[i].enabled)
        {
            ret = ni_device_session_context_init(&sca_ctx[i]);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to init scale context\n");
                goto end;
            }
            output_width[i] = scale_params[i].width;
            output_height[i] = scale_params[i].height;
        }
        else if ((drawbox_params.enabled)) // drawbox is only supported for a single instance in this example.
        {
            ret = ni_device_session_context_init(&crop_ctx);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to init crop context\n");
                goto end;
            }
            ret = ni_device_session_context_init(&pad_ctx);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to init pad context\n");
                goto end;
            }
            ret = ni_device_session_context_init(&ovly_ctx);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to init overlay context\n");
                goto end;
            }
            ret = ni_device_session_context_init(&fmt_ctx);
            if (ret)
            {
                ni_log(NI_LOG_ERROR, "Error: Failed to init format context\n");
                goto end;
            }
            break;
        }
    }
 
    for (i = 0; i < output_total; i++)
    {
        if (drawbox_params.enabled && scale_params[i].enabled){
            ni_log(NI_LOG_ERROR, "Error: Mixing scale and drawbox filter is not supported in this demo\n");
            goto end;
        }
        ni_log(NI_LOG_INFO, "(Task %d) Starting to transcode: HWFrames %d, video resolution %dx%d -> %dx%d\n",
               i, dec_ctx.hw_action, input_width, input_height, output_width[i], output_height[i]);
    }
 
    ctx.start_time = ni_gettime_ns();
    previous_time = ctx.start_time;
 
    while (!end_of_all_streams &&
        (send_rc == NI_TEST_RETCODE_SUCCESS || receive_rc == NI_TEST_RETCODE_SUCCESS ||
         (send_rc == NI_TEST_RETCODE_EAGAIN && receive_rc == NI_TEST_RETCODE_EAGAIN)))
    {
        // bitstream Sending
decode_send:
        send_rc = decoder_send_data(&ctx, &dec_ctx, &in_pkt, input_width, input_height, p_stream_info);
        if (send_rc < 0)
        {
            ni_log(NI_LOG_ERROR, "Error: decoder send packet failed\n");
            ret = send_rc;
            break;
        }
 
        // YUV Receiving: not writing to file
        receive_rc = decoder_receive_data(&ctx, &dec_ctx, &out_frame, input_width,
                                          input_height, NULL, 0, &rx_size);
 
        for (i = 0; i < output_total; i++)
        {
            frame_to_enc[i] = &out_frame;
        }
 
        if (receive_rc < 0)
        {
            ni_log(NI_LOG_ERROR, "Error: decoder receive frame failed\n");
            ret = receive_rc;
            break;
        }
        else if (receive_rc == NI_TEST_RETCODE_EAGAIN)
        {
            if (!dec_ctx.hw_action)
            {
                ni_decoder_frame_buffer_free(&(out_frame.data.frame));
            } else
            {
                ni_frame_buffer_free(&(out_frame.data.frame));
            }
 
            // use first encode config low delay flag for call flow
            if (p_enc_api_param[0].low_delay_mode <= 0 && encoder_opened)
            {
                ni_log(NI_LOG_DEBUG, "no decoder output, jump to encoder receive!\n");
                goto encode_recv;
            } else
            {
                ni_log(NI_LOG_DEBUG, "no decoder output, encode low_delay, jump to decoder send!\n");
                goto decode_send;
            }
        }
        else if (receive_rc != NI_TEST_RETCODE_END_OF_STREAM)
        {
 
            p_hwframe = (niFrameSurface1_t *)out_frame.data.frame.p_data[3];
            recycle_hw_frame_for_scaler = 1;
            for (i = 0; i < output_total; i++)
            {
                if (scale_params[i].enabled)
                {
                    if(!hw_frame_ref_flag)
                    {
                        hw_frame_ref_flag = 1;
                        ni_hw_frame_ref(p_hwframe);
                    }
 
                    scale_filter(&sca_ctx[i], &out_frame.data.frame, &filter_out_frame[i], xcoderGUID, scale_params[i].width,
                                scale_params[i].height, ni_to_gc620_pix_fmt(dec_ctx.pixel_format), scale_params[i].format);
                    frame_to_enc[i] = &filter_out_frame[i];
                }
                else if (drawbox_params.enabled)
                {
                    if(!hw_frame_ref_flag)
                    {
                        hw_frame_ref_flag = 1;
                        ni_hw_frame_ref(p_hwframe);
                    }
 
                    drawbox_filter(&crop_ctx, &pad_ctx, &ovly_ctx, &fmt_ctx, &out_frame.data.frame, &filter_out_frame[0],
                                   &drawbox_params, xcoderGUID, ni_to_gc620_pix_fmt(dec_ctx.pixel_format), GC620_I420);
                    for (i = 0; i < output_total; i++)
                    {
                        frame_to_enc[i] = &filter_out_frame[0];
                    }
                    break;
                }
 
                if (!scale_params[i].enabled)
                    recycle_hw_frame_for_scaler = 0;
            }
 
            // If the decoder generates a hardware frame, that frame is passed to the filter or the encoder directly.
            // Once the (scaler) filter has used it, the frame should be recycled/unreferenced. (It is done here.)
            // The filter then creates a new hardware frame, which is sent to the encoder and later recycled.
            // When one transcoder uses a filter and another transcoder does not, the hardware frame produced
            // by the decoder must NOT be recycled after the filter, because it will still be used by
            // the encoder and will be recycled later. recycle_hw_frame_for_scaler is a flag for this purpose.
            if((hw_frame_ref_flag) && (recycle_hw_frame_for_scaler))
            {
                hw_frame_ref_flag = 0;
                ni_hw_frame_unref(p_hwframe->ui16FrameIdx);
            }
 
            if (!encoder_opened)
            {
                for (i = 0; i < output_total; i++)
                {
                    p_hwframe2[i] = dec_ctx.hw_action == NI_CODEC_HW_ENABLE ?
                    (niFrameSurface1_t *)frame_to_enc[i]->data.frame.p_data[3] : NULL;
 
                    if (scale_params[i].enabled)
                        enc_pix_fmt[i] = gc620_to_ni_pix_fmt(scale_params[i].format);
                    else if (drawbox_params.enabled)
                        enc_pix_fmt[i] = NI_PIX_FMT_YUV420P;
                    else
                        enc_pix_fmt[i] = dec_ctx.pixel_format;
                }
 
                ret = encoder_open2(&ctx, enc_ctx, p_enc_api_param, output_total, enc_conf_params,
                                   enc_gop_params, &out_frame.data.frame, output_width, output_height,
                                   fps_num, fps_den, bitrate, enc_codec_format, enc_pix_fmt,
                                   out_frame.data.frame.aspect_ratio_idc, xcoderGUID, p_hwframe2, 0, false);
                if (ret != 0)
                {
                    break;
                }
                encoder_opened = 1;
 
                do
                {
                    receive_rc = encoder_receive2(&ctx, enc_ctx, &enc_in_frame, out_packet,
                                                 output_width, output_height, output_total, output_fp);
                }
                while (receive_rc == NI_TEST_RETCODE_EAGAIN);
 
                if (receive_rc == NI_TEST_RETCODE_SUCCESS)
                {
                    ni_log(NI_LOG_INFO, "Got encoded sequence header packet\n");
                }
                else
                {
                    ni_log(NI_LOG_ERROR, "Failed to get encoded sequence header packet, retcode %d\n", receive_rc);
                    ret = receive_rc;
                    break;
                }
            }
        }
 
        //encode_send
        for (i = 0; i < output_total; i++)
        {
            ctx.curr_enc_index = i;
            // YUV Sending
            send_rc = encoder_send_data2(&ctx, &enc_ctx[i], frame_to_enc[i], &enc_in_frame, output_width[i], output_height[i]);
 
            if (send_rc < 0)   //Error
            {
                if (dec_ctx.hw_action)
                {
                    p_hwframe = (niFrameSurface1_t *)frame_to_enc[i]->data.frame.p_data[3];
                    ni_hw_frame_ref(p_hwframe);
                } else
                {
                    ni_decoder_frame_buffer_free(&frame_to_enc[i]->data.frame);
                }
                break;
            } else if (send_rc == NI_TEST_RETCODE_EAGAIN)
            {
                // need to resend
                i--;
                continue;
            } else if (dec_ctx.hw_action && !ctx.enc_eos_sent[i])
            {
                p_hwframe = (niFrameSurface1_t *)frame_to_enc[i]->data.frame.p_data[3];
                ni_hw_frame_ref(p_hwframe);
            }
 
            // encoder send handling
            if (dec_ctx.hw_action)
            {
                ni_frame_wipe_aux_data(&frame_to_enc[i]->data.frame);
            } else
            {
                ni_decoder_frame_buffer_free(&frame_to_enc[i]->data.frame);
            }
        }
 
        if (send_rc < 0)
        {
            break;
        }
 
encode_recv:
        receive_rc = encoder_receive2(&ctx, enc_ctx, &enc_in_frame, out_packet,
                                     output_width, output_height, output_total, output_fp);
 
        for (i = 0; receive_rc >= 0 && i < output_total; i++)
        {
            if (!ctx.enc_eos_received[i])
            {
                ni_log(NI_LOG_DEBUG, "enc %d continues to read!\n", i);
                end_of_all_streams = 0;
                break;
            } else
            {
                ni_log(NI_LOG_DEBUG, "enc %d eos !\n", i);
                end_of_all_streams = 1;
            }
        }
 
        current_time = ni_gettime_ns();
        if (current_time - previous_time >= (uint64_t)1000000000) {
            ni_log(NI_LOG_INFO, "Decoder stats: received %u frames, fps %.2f, total bytes %u\n",
                   ctx.num_frames_received,
                   (float)ctx.num_frames_received / (float)(current_time - ctx.start_time) * (float)1000000000,
                   ctx.dec_total_bytes_received);
            for (i = 0; i < output_total; i++)
            {
                ni_log(NI_LOG_INFO, "Encoder %d stats: received %u packets, fps %.2f, total bytes %u\n",
                        i, ctx.num_packets_received[i],
                        (float)enc_ctx[i].frame_num / (float)(current_time - ctx.start_time) * (float)1000000000,
                        ctx.enc_total_bytes_received[i]);
            }
            previous_time = current_time;
        }
    }
 
    decoder_stat_report_and_close(&ctx, &dec_ctx);
    encoder_stat_report_and_close(&ctx, enc_ctx, output_total);
 
end:
    ni_packet_buffer_free(&in_pkt.data.packet);
    if (dec_ctx.hw_action == NI_CODEC_HW_ENABLE)
    {
        ni_frame_buffer_free(&out_frame.data.frame);
    } else
    {
        ni_decoder_frame_buffer_free(&out_frame.data.frame);
    }
    for (i = 0; i < output_total; i++)
    {
        ni_frame_buffer_free(&filter_out_frame[i].data.frame);
    }
 
    ni_frame_buffer_free(&enc_in_frame.data.frame);
    for (i = 0; i < output_total; i++)
    {
        ni_packet_buffer_free(&out_packet[i].data.packet);
    }
 
    ni_device_session_context_clear(&dec_ctx);
    for (i = 0; i < output_total; i++)
    {
        ni_device_session_context_clear(&enc_ctx[i]);
        if (output_fp[i] != NULL)
        {
            fclose(output_fp[i]);
        }
        if (scale_params[i].enabled)
        {
            ni_device_session_context_clear(&sca_ctx[i]);
        }
    }
    if (drawbox_params.enabled)
    {
        ni_device_session_context_clear(&crop_ctx);
        ni_device_session_context_clear(&pad_ctx);
        ni_device_session_context_clear(&ovly_ctx);
        ni_device_session_context_clear(&fmt_ctx);
    }
 
    free(ctx.file_cache);
 
    for(i = 0; i < MAX_OUTPUT_FILES; ++i)
    {
        free(ctx.enc_pts_queue[i]);
        ctx.enc_pts_queue[i] = NULL;
    }
 
    free(p_dec_api_param);
    free(p_enc_api_param);
 
    return ret;
}