How to change source pixel format from YUYV to MJPG

Accelerated Computing Intelligent Video Analytics DeepStream SDK
7

Hi DaneLLL,
Finally, it works.
I really appreciate your help.

bin->cap_filter =
      gst_element_factory_make (NVDS_ELEM_CAPS_FILTER, "src_cap_filter");
  if (!bin->cap_filter) {
    NVGSTDS_ERR_MSG_V ("Could not create 'src_cap_filter'");
    goto done;
  }
  caps = gst_caps_new_simple ("image/jpeg",
      "width", G_TYPE_INT, config->source_width, "height", G_TYPE_INT,
      config->source_height, "framerate", GST_TYPE_FRACTION,
      config->source_fps_n, config->source_fps_d, NULL);
  
  if (config->type == NV_DS_SOURCE_CAMERA_CSI) {
    GstCapsFeatures *feature = NULL;
    feature = gst_caps_features_new ("memory:NVMM", NULL);
    gst_caps_set_features (caps, 0, feature);
  }

  //g_object_set (G_OBJECT (bin->cap_filter), "caps", caps, NULL);
  if (config->type == NV_DS_SOURCE_CAMERA_V4L2) {
    GstElement *jpg_dec, *nvvidconv1, *nvvidconv2;
    GstCapsFeatures *feature = NULL;


    jpg_dec = gst_element_factory_make ("jpegdec", "jpeg-decoder");
    if (!jpg_dec) {
      NVGSTDS_ERR_MSG_V ("Failed to create 'jpg_dec'");
      goto done;
    }

    nvvidconv1 = gst_element_factory_make ("videoconvert", "nvvidconv1");
    if (!nvvidconv1) {
      NVGSTDS_ERR_MSG_V ("Failed to create 'nvvidconv1'");
      goto done;
    }
    
    GstCaps *lnvcaps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,"NV12", "width", G_TYPE_INT, config->source_width, "height", G_TYPE_INT, config->source_height, "framerate", GST_TYPE_FRACTION, config->source_fps_n, config->source_fps_d, NULL);
    feature = gst_caps_features_new ("memory:NVMM", NULL);
    gst_caps_set_features (lnvcaps, 0, feature);
    g_object_set (G_OBJECT (bin->cap_filter), "caps", lnvcaps, NULL);
    

    nvvidconv2 = gst_element_factory_make ("nvvideoconvert", "nvvidconv2");
    if (!nvvidconv2) {
      NVGSTDS_ERR_MSG_V ("Failed to create 'nvvidconv2'");
      goto done;
    }

    g_object_set (G_OBJECT (nvvidconv2), "gpu-id", config->gpu_id,
        "nvbuf-memory-type", config->nvbuf_memory_type, NULL);

    gst_bin_add_many (GST_BIN (bin->bin), bin->src_elem, jpg_dec, nvvidconv1, nvvidconv2, bin->cap_filter, NULL);

    gst_element_link_filtered (bin->src_elem, jpg_dec, caps);

    NVGSTDS_LINK_ELEMENT (jpg_dec, nvvidconv1);

    NVGSTDS_LINK_ELEMENT (nvvidconv1, nvvidconv2);

    NVGSTDS_LINK_ELEMENT (nvvidconv2, bin->cap_filter);

    NVGSTDS_BIN_ADD_GHOST_PAD (bin->bin, bin->cap_filter, "src");

  } else {

    g_object_set (G_OBJECT (bin->cap_filter), "caps", caps, NULL);

    gst_bin_add_many (GST_BIN (bin->bin), bin->src_elem, bin->cap_filter, NULL);

    NVGSTDS_LINK_ELEMENT (bin->src_elem, bin->cap_filter);

    NVGSTDS_BIN_ADD_GHOST_PAD (bin->bin, bin->cap_filter, "src");
  }

Thank you,
Chris Jung