GStreamer C Code to play video
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Hi,
I have identified the below pipleine to play the video. gst-launch-0.10 -v filesrc location=/home/administrator/Desktop/Test.mp4 ! qtdemux ! ffdec_mpeg4 ! autovideosink With gst-launch i am able to play the video. I converted the pipeline to a C Code and tried to play the video but it displays the error:GStreamer General Stream Error. This is code i am using for testing. Code: #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *videosrc, *colorspace, *videoenc, *videoq, *audiosrc, *conv, *audioenc, *audioq, *muxer, *sink; GstBus *bus; /* Initialisation */ gst_init ((NULL, NULL); loop = g_main_loop_new (NULL, FALSE); /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); videosrc = gst_element_factory_make ("filesrc", "videosrc"); muxer = gst_element_factory_make ("qtdemux", "mux"); videoenc = gst_element_factory_make ("ffdec_mpeg4", "videoenc"); sink = gst_element_factory_make ("autovideosink", "sink"); if (!pipeline || !videosrc || !muxer || !videoenc || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ g_print ("Elements are created\n"); /* set the properties of other elements */ g_object_set (G_OBJECT (videosrc), "location", "/home/administrator/Desktop/Test.mp4", NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), videosrc, muxer, videoenc, sink, NULL); g_print ("Added all the Elements into the pipeline\n"); /* we link the elements together */ gst_element_link_many (videosrc, muxer, videoenc, sink, NULL); g_print ("Linked all the Elements together\n"); /* Set the pipeline to "playing" state*/ g_print ("Playing the video\n"); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } Please let me know if there is any error in the code. Thanks in advance. |
Re: GStreamer C Code to play video
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Hi,
You need to check the return status of gst_element_link_many (videosrc, muxer, videoenc, sink,
NULL); it may be a failure. You may be required to do dynamic linking between mux and decoder.
-Ashwini
On Wed, Aug 3, 2011 at 4:25 PM, Durga <[hidden email]> wrote: Hi, _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Ashwini Thank you so much for your reply.
I corrected that and it works fine now!! I have one other issue :( When i run the code, it displays the video with the title bar "<unknown>". I do not want the title bar at all. What should i do for that?? |
Re: GStreamer C Code to play video
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For that, may be you can create your own window and then set the x_overlay thru "gst_x_overlay_set_xwindow_id"
You can see the gst-player code for help.....
-Ashwini
On Wed, Aug 3, 2011 at 5:18 PM, Durga <[hidden email]> wrote: Ashwini Thank you so much for your reply. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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If you only whant to have
your program name in title bar, you could use the gst_init(&argc, &argv): int main (int argc, char
*argv[]) { gst_init (&argc,
&argv); Bernhard Von:
gstreamer-devel-bounces+bernhard.graaf=[hidden email]
[mailto:gstreamer-devel-bounces+bernhard.graaf=[hidden email]] Im Auftrag von Ashwini Sharma For that, may be you can create your own window and then set the
x_overlay thru "gst_x_overlay_set_xwindow_id" You can see the gst-player code for help..... -Ashwini On Wed, Aug 3, 2011 at 5:18 PM, Durga <[hidden email]> wrote: Ashwini Thank you so much for your reply. Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by ak.ashwini
Hi Ashwini,
Thanks for the reply!! Could you please give more input on this.. because i am completely new to gstreamer..!! Any kind of help is appreciated..!! Thanks in advance. |
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In reply to this post by BGraaf
BGraaf,
Thanks for the reply..!! I do not want the title bar at all..! What should i do for that? |
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Then you should follow Ashwinis tip.
e.g.: https://github.com/felipec/gst-player/blob/568a67ec342fc20dbc41cade9c4e317f0 c1d00ba/ui.c -----Ursprüngliche Nachricht----- Von: gstreamer-devel-bounces+bernhard.graaf=[hidden email] [mailto:gstreamer-devel-bounces+bernhard.graaf=[hidden email]] Im Auftrag von Durga Gesendet: Mittwoch, 3. August 2011 14:31 An: [hidden email] Betreff: Re: AW: GStreamer C Code to play video BGraaf, Thanks for the reply..!! I do not want the title bar at all..! What should i do for that? -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3715276.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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BGraaf,
I saw that code, but i have no clue as how i can create a window / link the sink to that window. Could you please give more input on this!! Thanks. |
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In reply to this post by akaChella
Hi Durga,
I'm about to start the same thing. Could you post your working c-code so that I can try it too. Thanks in advance. Steve -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Durga Sent: 03 August 2011 09:31 To: [hidden email] Subject: Re: AW: GStreamer C Code to play video BGraaf, Thanks for the reply..!! I do not want the title bar at all..! What should i do for that? -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3715276.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by akaChella
Hi,
Did you do anythink with gtk+? If you whant to program windowing, you should use something like this. Gstreamer only use this interface. -----Ursprüngliche Nachricht----- Von: gstreamer-devel-bounces+bernhard.graaf=[hidden email] [mailto:gstreamer-devel-bounces+bernhard.graaf=[hidden email]] Im Auftrag von Durga Gesendet: Mittwoch, 3. August 2011 16:25 An: [hidden email] Betreff: Re: AW: AW: GStreamer C Code to play video BGraaf, I saw that code, but i have no clue as how i can create a window / link the sink to that window. Could you please give more input on this!! Thanks. -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3715644.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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I have no idea about gtk+...
Actually i completely new to gstreamer :( |
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Could you please give some example, as how i can do that?
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BGraaf and Ashwini,
What are the packages that i need to install in order to create a new window or to run the application ui.c which was shared by BGraaf from the following path: https://github.com/felipec/gst-player/blob/568a67ec342fc20dbc41cade9c4e317f0 |
Re: AW: AW: AW: GStreamer C Code to play video
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gtk+, and ofcourse the dependencies of it.... which you can see when configuring compiling gtk+
On Thu, Aug 4, 2011 at 2:55 PM, Durga <[hidden email]> wrote: BGraaf and Ashwini, _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by it
Steve,
This is the working code! #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink; GstBus *bus; /* Initialisation */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); /* Check input arguments */ if (argc != 2) { g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]); return -1; } /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); source = gst_element_factory_make ("filesrc", "file-source"); demuxer = gst_element_factory_make ("qtdemux", "demuxer"); decoder = gst_element_factory_make ("ffdec_mpeg4", "decoder"); sink = gst_element_factory_make ("autovideosink", "video-output"); if (!pipeline || !source || !demuxer || !decoder || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ /* we set the input filename to the source element */ g_object_set (G_OBJECT (source), "location", argv[1], NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), source, demuxer, decoder, sink, NULL); /* we link the elements together */ gst_element_link (source, demuxer); gst_element_link_many (decoder, sink, NULL); g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added), decoder); /* note that the demuxer will be linked to the decoder dynamically. The reason is that Ogg may contain various streams (for example audio and video). The source pad(s) will be created at run time, by the demuxer when it detects the amount and nature of streams. Therefore we connect a callback function which will be executed when the "pad-added" is emitted.*/ /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\n", argv[1]); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } |
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Thanks Durga,
Sorry to sound so dim, but do you have a script to compile and link it, please? So far I've been only working in Perl, so this is my first excursion into Perl. Thanks in advance. Steve -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Durga Sent: 04 August 2011 06:30 To: [hidden email] Subject: RE: AW: GStreamer C Code to play video Steve, This is the working code! #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink; GstBus *bus; /* Initialisation */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); /* Check input arguments */ if (argc != 2) { g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]); return -1; } /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); source = gst_element_factory_make ("filesrc", "file-source"); demuxer = gst_element_factory_make ("qtdemux", "demuxer"); decoder = gst_element_factory_make ("ffdec_mpeg4", "decoder"); sink = gst_element_factory_make ("autovideosink", "video-output"); if (!pipeline || !source || !demuxer || !decoder || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ /* we set the input filename to the source element */ g_object_set (G_OBJECT (source), "location", argv[1], NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), source, demuxer, decoder, sink, NULL); /* we link the elements together */ gst_element_link (source, demuxer); gst_element_link_many (decoder, sink, NULL); g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added), decoder); /* note that the demuxer will be linked to the decoder dynamically. The reason is that Ogg may contain various streams (for example audio and video). The source pad(s) will be created at run time, by the demuxer when it detects the amount and nature of streams. Therefore we connect a callback function which will be executed when the "pad-added" is emitted.*/ /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\n", argv[1]); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3718109.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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>So far I've been only working in Perl, so this is my first excursion into
>Perl. Whoops, typo: so this is my first excursion into C++. -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Steve Sent: 04 August 2011 08:19 To: 'Discussion of the development of and with GStreamer' Subject: RE: AW: GStreamer C Code to play video Thanks Durga, Sorry to sound so dim, but do you have a script to compile and link it, please? So far I've been only working in Perl, so this is my first excursion into Perl. Thanks in advance. Steve -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Durga Sent: 04 August 2011 06:30 To: [hidden email] Subject: RE: AW: GStreamer C Code to play video Steve, This is the working code! #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink; GstBus *bus; /* Initialisation */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); /* Check input arguments */ if (argc != 2) { g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]); return -1; } /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); source = gst_element_factory_make ("filesrc", "file-source"); demuxer = gst_element_factory_make ("qtdemux", "demuxer"); decoder = gst_element_factory_make ("ffdec_mpeg4", "decoder"); sink = gst_element_factory_make ("autovideosink", "video-output"); if (!pipeline || !source || !demuxer || !decoder || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ /* we set the input filename to the source element */ g_object_set (G_OBJECT (source), "location", argv[1], NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), source, demuxer, decoder, sink, NULL); /* we link the elements together */ gst_element_link (source, demuxer); gst_element_link_many (decoder, sink, NULL); g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added), decoder); /* note that the demuxer will be linked to the decoder dynamically. The reason is that Ogg may contain various streams (for example audio and video). The source pad(s) will be created at run time, by the demuxer when it detects the amount and nature of streams. Therefore we connect a callback function which will be executed when the "pad-added" is emitted.*/ /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\n", argv[1]); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3718109.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by akaChella
Hi Durga,
Well I compiled your code with Code::Blocks and it compiled and ran first time. I get a window with a pop-up box saying information or close. But I don't yet have a video running. I have two questions: 1 - What format of file name must I use? 2 - I'm not sure what container or codec I should be using. I am using a '.ogg' video file. By maybe I need a specific codec? Thanks Steve. -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Durga Sent: 04 August 2011 06:30 To: [hidden email] Subject: RE: AW: GStreamer C Code to play video Steve, This is the working code! #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink; GstBus *bus; /* Initialisation */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); /* Check input arguments */ if (argc != 2) { g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]); return -1; } /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); source = gst_element_factory_make ("filesrc", "file-source"); demuxer = gst_element_factory_make ("qtdemux", "demuxer"); decoder = gst_element_factory_make ("ffdec_mpeg4", "decoder"); sink = gst_element_factory_make ("autovideosink", "video-output"); if (!pipeline || !source || !demuxer || !decoder || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ /* we set the input filename to the source element */ g_object_set (G_OBJECT (source), "location", argv[1], NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), source, demuxer, decoder, sink, NULL); /* we link the elements together */ gst_element_link (source, demuxer); gst_element_link_many (decoder, sink, NULL); g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added), decoder); /* note that the demuxer will be linked to the decoder dynamically. The reason is that Ogg may contain various streams (for example audio and video). The source pad(s) will be created at run time, by the demuxer when it detects the amount and nature of streams. Therefore we connect a callback function which will be executed when the "pad-added" is emitted.*/ /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\n", argv[1]); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3718109.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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OK, well, this seems not to be correct. It seems I have compiled the
default program that comes with Code::Blocks. I'll get back to you when I've got the right program compiled. Sorry. Steve -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Steve Sent: 04 August 2011 14:45 To: 'Discussion of the development of and with GStreamer' Subject: RE: AW: GStreamer C Code to play video Hi Durga, Well I compiled your code with Code::Blocks and it compiled and ran first time. I get a window with a pop-up box saying information or close. But I don't yet have a video running. I have two questions: 1 - What format of file name must I use? 2 - I'm not sure what container or codec I should be using. I am using a '.ogg' video file. By maybe I need a specific codec? Thanks Steve. -----Original Message----- From: gstreamer-devel-bounces+it=[hidden email] [mailto:gstreamer-devel-bounces+it=[hidden email]] On Behalf Of Durga Sent: 04 August 2011 06:30 To: [hidden email] Subject: RE: AW: GStreamer C Code to play video Steve, This is the working code! #include <gst/gst.h> #include <glib.h> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } int main (int argc, char *argv[]) { GMainLoop *loop; GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink; GstBus *bus; /* Initialisation */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); /* Check input arguments */ if (argc != 2) { g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]); return -1; } /* Create gstreamer elements */ pipeline = gst_pipeline_new ("audio-player"); source = gst_element_factory_make ("filesrc", "file-source"); demuxer = gst_element_factory_make ("qtdemux", "demuxer"); decoder = gst_element_factory_make ("ffdec_mpeg4", "decoder"); sink = gst_element_factory_make ("autovideosink", "video-output"); if (!pipeline || !source || !demuxer || !decoder || !sink) { g_printerr ("One element could not be created. Exiting.\n"); return -1; } /* Set up the pipeline */ /* we set the input filename to the source element */ g_object_set (G_OBJECT (source), "location", argv[1], NULL); /* we add a message handler */ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /* we add all elements into the pipeline */ gst_bin_add_many (GST_BIN (pipeline), source, demuxer, decoder, sink, NULL); /* we link the elements together */ gst_element_link (source, demuxer); gst_element_link_many (decoder, sink, NULL); g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added), decoder); /* note that the demuxer will be linked to the decoder dynamically. The reason is that Ogg may contain various streams (for example audio and video). The source pad(s) will be created at run time, by the demuxer when it detects the amount and nature of streams. Therefore we connect a callback function which will be executed when the "pad-added" is emitted.*/ /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\n", argv[1]); gst_element_set_state (pipeline, GST_STATE_PLAYING); /* Iterate */ g_print ("Running...\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\n"); gst_element_set_state (pipeline, GST_STATE_NULL); g_print ("Deleting pipeline\n"); gst_object_unref (GST_OBJECT (pipeline)); return 0; } -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/GStreamer-C-Code-to-play-video-t p3715064p3718109.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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