Trying translate working gst-launch command to the API
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Trying translate working gst-launch command to the API
 
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Re: Trying translate working gst-launch command to the API
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On 24/8/20 5:12 am, Kelly Wiles wrote:
> I am getting a segment fault when I try and convert the following, > which works into the C API. > > gst-launch-1.0 -e -v v4l2src ! > 'video/x-raw,width=1280,height=720,framerate=30/1,format=UYVY' ! tee > name=t ! queue ! v4l2h264enc > extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=500000;" > ! h264parse ! filesink location=foo1.h264 t. ! queue ! v4l2h264enc > extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=2000000;" > ! h264parse ! filesink location=foo2.h264 > > I run the v4l2-ctl commands before executing the gst command. > > v4l2-ctl --set-edid=file=edid5.txt --fix-edid-checksums > v4l2-ctl -v pixelformat=UYVY > v4l2-ctl --set-dv-bt-timings query > > The edid5.txt is. > > 00,FF,FF,FF,FF,FF,FF,00,52,62,88,88,00,88,88,88,1C,15,01,03,80,00,00,78,0A,EE,91,A3,54,4C,99,26,0F,50,54,00,00,00,01,01,01,01,01,0 > > 1,01,01,01,01,01,01,01,01,01,01,01,1D,00,72,51,D0,1E,20,6E,28,55,00,C4,8E,21,00,00,1E,8C,0A,D0,8A,20,E0,2D,10,10,3E,96,00,13,8E,21 > > ,00,00,1E,00,00,00,FC,00,54,6F,73,68,69,62,61,2D,48,32,43,0A,20,00,00,00,FD,00,3B,3D,0F,2E,0F,00,0A,20,20,20,20,20,20,01,6D,02,03, > > 21,41,4D,84,13,03,02,12,11,01,20,21,22,3C,3D,3E,23,09,07,07,66,03,0C,00,30,00,80,E3,00,7F,8C,8C,0A,D0,8A,20,E0,2D,10,10,3E,96,00,C > > 4,8E,21,00,00,18,8C,0A,D0,8A,20,E0,2D,10,10,3E,96,00,13,8E,21,00,00,18,8C,0A,A0,14,51,F0,16,00,26,7C,43,00,13,8E,21,00,00,98,00,00 > > ,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,BE > > > When I run this code it crashes with a segment fault on the > g_object_set function. > > #include <gst/gst.h> > #include <stdio.h> > > // gst-launch-1.0 -e -v v4l2src ! > 'video/x-raw,width=1280,height=720,framerate=30/1,format=UYVY' ! tee > name=t ! queue ! v4l2h264enc > extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=500000;" > ! h264parse ! filesink location=foo1.h264 t. ! queue ! v4l2h264enc > extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=2000000;" > ! h264parse ! filesink location=foo2.h264 > > typedef struct _App { > GstElement *pipeline; > GstElement *appsrc; > > GMainLoop *loop; > guint sourceid; > > GTimer *timer; > } App; > > App app; > > gint main(gint argc, gchar *argv[]) { > > GstElement *src, *split, *enc1, *enc2, *f1, *f2, *h1, *h2, > *q1, *q2; > GstCaps *filtercaps; > GstCaps *enccaps; > > gst_init(&argc, &argv); > > app.loop = g_main_loop_new(NULL, FALSE); > > app.pipeline = gst_pipeline_new("my-pipeline"); > > src = gst_element_factory_make("v4l2src", "src"); > split = gst_element_factory_make("tee", "split"); > h1 = gst_element_factory_make("h264parse", "h1"); > h2 = gst_element_factory_make("h264parse", "h2"); > q1 = gst_element_factory_make("queue", "q1"); > q2 = gst_element_factory_make("queue", "q2"); > enc1 = gst_element_factory_make("v4l2h264enc", "enc1"); > enc2 = gst_element_factory_make("v4l2h264enc", "enc2"); > f1 = gst_element_factory_make("filesink", "f1"); > f2 = gst_element_factory_make("filesink", "f2"); > > if (!app.pipeline || !src || !split || !enc1 || !enc2 || !f1 > || !f2 || !h1 || !h2 || !q1 || !q2) { > g_error ("Could not create > elements\npip=%p\nsrc=%p\nsplit=%p\nenc1=%p\nenc2=%p\nf1=%p\nf2=%p\nh1=%p\nh2=%p\nq1=%p\nq2=%p", > app.pipeline, src, split, enc1, enc2, > f1, f2, h1, h2, q1, q2); > return -1; > } > > g_object_set(f1, "location", "foo1.h264", NULL); > g_object_set(f2, "location", "foo2.h264", NULL); > > fprintf(stderr, "Here 1\n"); > // g_object_set(enc1, "extra-controls", > "controls,h264_profile=4,h264_level=10,video_bitrate=500000;", NULL); > enccaps = gst_caps_new_simple ("controls", > "h264_profile", G_TYPE_INT, 4, > "h264_level", G_TYPE_INT, 10, > "video_bitrate", G_TYPE_INT, 500000, > NULL); > g_object_set (G_OBJECT (enc1), "extra-controls", enccaps, NULL); extra-controls requires a GstStructure, not a GstCaps. Replace gst_caps_new_simple() with gst_structure_new() (and types). > fprintf(stderr, "Here 2\n"); > g_object_set(enc2, "extra-controls", > "controls,h264_profile=4,h264_level=10,video_bitrate=2000000;", NULL); > fprintf(stderr, "Here 3\n"); > > gst_bin_add_many(GST_BIN(app.pipeline), src, split, q1, enc1, > h1, f1, q2, enc2, h2, f2, NULL); > > if (!gst_element_link_many(src, split, NULL) > || !gst_element_link_many(split, q1, enc1, h1, f1, NULL) > || !gst_element_link_many(split, q2, enc2, h2, f2, > NULL)) { > g_error("Failed to link elements ..."); > return -2; > } > > filtercaps = gst_caps_new_simple ("video/x-raw", > "format", G_TYPE_STRING, "UYVY", > "width", G_TYPE_INT, 1280, > "height", G_TYPE_INT, 720, > "framerate", GST_TYPE_FRACTION, 30, 1, > NULL); > g_object_set (G_OBJECT (src), "caps", filtercaps, NULL); > gst_caps_unref (filtercaps); > > gst_element_set_state (app.pipeline, GST_STATE_PLAYING); > > if (gst_element_get_state (app.pipeline, NULL, NULL, -1) == > GST_STATE_CHANGE_FAILURE) { > g_error ("Failed to go into PLAYING state"); > } > > g_print ("Running ...\n"); > g_main_loop_run (app.loop); > > /* exit */ > gst_element_set_state (app.pipeline, GST_STATE_NULL); > gst_object_unref (app.pipeline); > > return 0; > } > > The 'Here 1' prints then it dies, can any one help me to understand why? > > Either method of calling g_object_set fails the same way. > > Thanks > > > _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Re: Trying translate working gst-launch command to the API
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Ok, so i fixed the crash and now getting error
Maybe be due to not enough memory or failing driver The code: #include <gst/gst.h> #include <stdio.h> // gst-launch-1.0 -e -v v4l2src ! 'video/x-raw,width=1280,height=720,framerate=30/1,format=UYVY' ! tee name=t ! // queue ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=500000;" ! h264parse ! // filesink location=foo1.h264 t. ! queue ! // v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=10,video_bitrate=2000000;" ! h264parse ! // filesink location=foo2.h264 typedef struct _App { GstElement *pipeline; GstElement *appsrc; GMainLoop *loop; guint sourceid; GTimer *timer; } App; App app; gint main(gint argc, gchar *argv[]) { GstBus *bus; GstMessage *msg; GstElement *src, *tee, *enc1, *enc2, *f1, *f2, *h1, *h2, *q1, *q2; GstStructure *srcOpts; GstStructure *encOpts; gst_init(&argc, &argv); app.loop = g_main_loop_new(NULL, FALSE); app.pipeline = gst_pipeline_new("my-pipeline"); src = gst_element_factory_make("v4l2src", "src"); tee = gst_element_factory_make("tee", "tee"); h1 = gst_element_factory_make("h264parse", "h1"); h2 = gst_element_factory_make("h264parse", "h2"); q1 = gst_element_factory_make("queue", "q1"); q2 = gst_element_factory_make("queue", "q2"); enc1 = gst_element_factory_make("v4l2h264enc", "enc1"); enc2 = gst_element_factory_make("v4l2h264enc", "enc2"); f1 = gst_element_factory_make("filesink", "f1"); f2 = gst_element_factory_make("filesink", "f2"); if (!app.pipeline || !src || !tee || !enc1 || !enc2 || !f1 || !f2 || !h1 || !h2 || !q1 || !q2) { g_error ("Could not create elements\npip=%p\nsrc=%p\ntee=%p\nenc1=%p\nenc2=%p\nf1=%p\nf2=%p\nh1=%p\nh2=%p\nq1=%p\nq2=%p", app.pipeline, src, tee, enc1, enc2, f1, f2, h1, h2, q1, q2); return -1; } g_object_set(f1, "location", "foo1.h264", NULL); g_object_set(f2, "location", "foo2.h264", NULL); encOpts = gst_structure_new ("controls", "h264_profile", G_TYPE_INT, 4, "h264_level", G_TYPE_INT, 10, "video_bitrate", G_TYPE_INT, 500000, NULL); g_object_set (G_OBJECT (enc1), "extra-controls", encOpts, NULL); encOpts = gst_structure_new ("controls", "h264_profile", G_TYPE_INT, 4, "h264_level", G_TYPE_INT, 10, "video_bitrate", G_TYPE_INT, 200000, NULL); g_object_set (G_OBJECT (enc2), "extra-controls", encOpts, NULL); gst_bin_add_many(GST_BIN(app.pipeline), src, tee, q1, enc1, h1, f1, q2, enc2, h2, f2, NULL); if (!gst_element_link_many(src, tee, NULL) || !gst_element_link_many(tee, q1, enc1, h1, f1, NULL) || !gst_element_link_many(tee, q2, enc2, h2, f2, NULL)) { g_error("Failed to link elements ..."); return -2; } srcOpts = gst_structure_new ("video/x-raw", "format", G_TYPE_STRING, "UYVY", "width", G_TYPE_INT, 1280, "height", G_TYPE_INT, 720, "framerate", GST_TYPE_FRACTION, 30, 1, NULL); g_object_set (G_OBJECT (src), "extra-controls", srcOpts, NULL); // GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(app.pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline"); gst_element_set_state (app.pipeline, GST_STATE_PLAYING); #if(0) if (gst_element_get_state (app.pipeline, NULL, NULL, -1) == GST_STATE_CHANGE_FAILURE) { g_error ("Failed to go into PLAYING state"); } g_print ("Running ...\n"); g_main_loop_run (app.loop); #endif bus = gst_element_get_bus (app.pipeline); msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS); /* exit */ /* Free resources */ if (msg != NULL) { GError *err; gchar *debug_info; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_ERROR: gst_message_parse_error (msg, &err, &debug_info); g_printerr ("Error received from element %s: %s\n", GST_OBJECT_NAME (msg->src), err->message); g_printerr ("Debugging information: %s\n", debug_info ? debug_info : "none"); g_clear_error (&err); g_free (debug_info); break; case GST_MESSAGE_EOS: g_print ("End-Of-Stream reached.\n"); break; default: /* We should not reach here because we only asked for ERRORs and EOS */ g_printerr ("Unexpected message received.\n"); break; } gst_message_unref (msg); } gst_object_unref (bus); gst_element_set_state (app.pipeline, GST_STATE_NULL); gst_object_unref (app.pipeline); return 0; } This works through the command line so I guess i am missing something else in the code. Just do not understand why it works as a command line but not as an API. I enabled the pipeline graph dot files for both the gst-launch-1.0 and my program and they appear to be alike, see attached of my program graph. The graph was created by un-commenting the GST_DEBUG_BIN_TO_DOT_FILE line. I have read most of the tutorials but feel lost if i try anything new that the docs did not cover. Thanks -- This email has been checked for viruses by AVG. https://www.avg.com _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: Trying translate working gst-launch command to the API
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Re: Trying translate working gst-launch command to the API
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Re: Trying translate working gst-launch command to the API
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Re: Trying translate working gst-launch command to the API
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Re: Trying translate working gst-launch command to the API
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Re: Trying translate working gst-launch command to the API
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