<div dir="ltr">Hi, Please help me find a solution to this issue: - I have YUV data file as input and I should output H264 file, using hardware encoding supported by nvidia Jetson TX2 (omxh264enc). - I should use c/c++ to write my program. - I have already done the following line command and I obtain the h264 as output and I I have succeeded in playing it using vlc. gst-launch-1.0 filesrc blocksize=345600 location=Basketball.yuv ! 'video/x-raw, width=(int)640, height=(int)360, format=(string)I420, framerate=(fraction)25/1' ! omxh264enc ! 'video/x-h264, stream-format=(string)byte-stream' ! filesink location=results_block_size_345600.h264 -So now I should convert this command line to a code and replace the filesrc by an appsrc, but I obtain error when executing it: //gcc -Wall $(pkg-config --cflags gstreamer-1.0) YUV_to_H264.c -o yuvtoh264 $(pkg-config --libs gstreamer-1.0) -lgstapp-1.0 #include <gst/gst.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <gst/app/gstappsrc.h> #define WIDTH 640 #define HEIGHT 360 #define BUFFER_SIZE (WIDTH*HEIGHT*3/2) /* Structure to contain all our information */ typedef struct _CustomData { GstElement *pipeline, *source, *encoder, *filter, *fsink; GMainLoop *loop; FILE *yuv_file; } CustomData; static void cb_need_data (GstElement *source, guint size, CustomData *data) { static GstClockTime timestamp = 0; char* data_pointer; //size_t read_bytes; GstBuffer *buffer; GstFlowReturn ret; data_pointer = (char*)malloc (BUFFER_SIZE); g_assert(data_pointer != NULL); fread(data_pointer, 1 , BUFFER_SIZE, data->yuv_file); buffer = gst_buffer_new_wrapped (data_pointer, BUFFER_SIZE); free(data_pointer); GST_BUFFER_PTS(buffer) = timestamp; GST_BUFFER_DTS(buffer) = timestamp; //GST_BUFFER_DURATION(buffer) = gst_util_uint64_scale_int (1, GST_SECOND, 1); GST_BUFFER_DURATION(buffer) = GST_CLOCK_TIME_NONE; timestamp += GST_BUFFER_DURATION (buffer); g_signal_emit_by_name (source, "push-buffer", buffer, &ret); gst_buffer_unref (buffer); if (ret != GST_FLOW_OK) { g_main_loop_quit (data->loop); } } gint main (gint argc, gchar *argv[]) { CustomData data; GstCaps *input_enc_caps, *output_enc_caps; GstStateChangeReturn state_ret; long yuv_file_size; /*Initialize cumstom data structure */ memset (&data, 0, sizeof (data)); /* Initialize GStreamer and create the mainloop */ gst_init (&argc, &argv); data.loop = g_main_loop_new (NULL, FALSE); /* Create the elements */ data.source = gst_element_factory_make ("appsrc", "myapp_source"); data.encoder = gst_element_factory_make ("omxh264enc", "myapp_encoder"); data.filter = gst_element_factory_make ("capsfilter", "myapp_filter"); data.fsink = gst_element_factory_make ("filesink", "myapp_sink"); /* Create the empty pipeline */ data.pipeline = gst_pipeline_new ("myapp_pipeline"); if (!data.pipeline || !data.source || !data.encoder || !data.filter || !data.fsink) { g_printerr ("Not all elements could be created.\n"); return -1; } /* Get a pointer to the YUV input file*/ data.yuv_file = fopen("/media/ubuntu/6634-3132/Basketball.yuv", "rb"); g_assert(data.yuv_file != NULL); /* Obtain the YUV file size */ fseek (data.yuv_file , 0 , SEEK_END); yuv_file_size = ftell (data.yuv_file); rewind (data.yuv_file); //printf("\n %ld); /* Configure source, filter and fsink */ input_enc_caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING, "I420", "width", G_TYPE_INT, WIDTH, "height", G_TYPE_INT, HEIGHT, "framerate", GST_TYPE_FRACTION, 25, 1, NULL); output_enc_caps = gst_caps_new_simple ("video/x-h264", "stream-format", G_TYPE_STRING, "byte-stream", NULL); g_object_set (G_OBJECT (data.source), "caps", input_enc_caps, "stream-type", 2, "format", GST_FORMAT_BYTES, "size", (gint64)(yuv_file_size), NULL); g_signal_connect (data.source, "need-data", G_CALLBACK (cb_need_data), NULL); g_object_set (G_OBJECT (data.filter), "caps", output_enc_caps, NULL); g_object_set (G_OBJECT (data.fsink), "location", "/media/ubuntu/6634-3132/Basketball.h264", NULL); gst_caps_unref (input_enc_caps); gst_caps_unref (output_enc_caps); //gint64 out_size = gst_app_src_get_size(data.source); //g_print("%" G_GINT64_FORMAT, out_size); /* Link all elements that can be automatically linked*/ gst_bin_add_many (GST_BIN (data.pipeline), data.source, data.encoder, data.filter, data.fsink, NULL); if ((gst_element_link_many (data.source, data.encoder, data.filter, data.fsink, NULL)) != TRUE ) { g_printerr ("Elements could not be linked.\n"); gst_object_unref (data.pipeline); return -1; } /* Start playing the pipeline */ state_ret = gst_element_set_state (data.pipeline, GST_STATE_PLAYING); //g_assert(state_ret == GST_STATE_CHANGE_ASYNC); if (state_ret == GST_STATE_CHANGE_FAILURE) { g_printerr ("Unable to set the pipeline to the playing state.\n"); gst_object_unref (data.pipeline); return -1; } /* Set the MainLoop to run */ g_main_loop_run (data.loop); /* clean up */ fclose (data.yuv_file); gst_element_set_state (data.pipeline, GST_STATE_NULL); gst_object_unref (GST_OBJECT (data.pipeline)); g_main_loop_unref (data.loop); return 0; } ERRORS : ubuntu@tegra-ubuntu:~/Desktop$ ./yuvtoh264 Inside NvxLiteH264DecoderLowLatencyInitNvxLiteH264DecoderLowLatencyInit set DPB and MjstreamingInside NvxLiteH265DecoderLowLatencyInitNvxLiteH265DecoderLowLatencyInit set DPB and MjstreamingUnable to set the pipeline to the playing state. Thanks to help to resolve the isuue. Regards, -- <div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>AKRA Hanine.</div><div> </div> </div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div> </div>