[Bug 730697] New: GES Memory management problems when playing a list of files

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=730697
  GStreamer | gst-editing-services | 1.2.4

           Summary: GES Memory management problems when playing a list of
                    files
    Classification: Platform
           Product: GStreamer
           Version: 1.2.4
        OS/Version: Windows
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-editing-services
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: el.el86 at yahoo.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I faced problem with memory management with GES. I have a program which plays a
list of video files. You can add files to the list and play it. User can replay
the list without shutting the program down. Video files list elements are basic
C strings and I build timeline from scratch whenever I start playing my videos
list. The problem is that GES stores clips into the memory and does not release
it after all the timeline is played. That is, after each time I play my
timeline, the total consumption of the RAM my application uses just
accumulates, for example after the first time I play my timeline my application
RAM consumption is 100MB, after I play it second time it doubles and it uses
200mb. There must be a problem with memory management. I use assets, I unref
them, I use static timeline and pipiline, maybe that is the cause? do I need to
unref timeline and pipeline? I use     g_object_unref (pipeline);
g_object_unref (timeline); but it does not help The code below represents my
problem:

#include <ges/ges.h>
#include <stdio.h>

static GESTimeline *timeline;
static GESPipeline *pipeline;

int
main (int argc, char **argv)
{
    gchar *firstFileAddress = "C:/videoSamples/sample2.mkv";
    gchar *secondFileAddress = "C:/videoSamples/sample2.mkv";
    int a = 0;
      gst_init (NULL, NULL);
      ges_init ();

    printf ("check process memory consumption before playing video files(enter
any number! and press enter) \n");

    scanf("%d",&a);
    // lets play first playlist
    if(1){
        GMainLoop *mainloop;
        timeline = ges_timeline_new_audio_video ();


        // Adding clips to the timeline
        if(1) {
            GESAsset *src_asset;
            GESLayer *layer;
            gchar *uri;
            GESUriClipAsset *asset;        

            layer = ges_timeline_append_layer(timeline);

            uri = gst_filename_to_uri (firstFileAddress, NULL);
            asset = ges_uri_clip_asset_request_sync(uri,NULL);
            src_asset = GES_ASSET(asset);
            ges_layer_add_asset (layer, src_asset, 0*GST_SECOND, 5*GST_SECOND,
2*GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
            gst_object_unref (src_asset);
            g_free(uri); 
        }    

        // Adding clips to the timeline
        if(1) {
            GESAsset *src_asset;
            GESLayer *layer;
            gchar *uri;
            GESUriClipAsset *asset;        

            layer = ges_timeline_append_layer(timeline);

            uri = gst_filename_to_uri (secondFileAddress, NULL);
            asset = ges_uri_clip_asset_request_sync(uri,NULL);
            src_asset = GES_ASSET(asset);
            ges_layer_add_asset (layer, src_asset, 2*GST_SECOND, 5*GST_SECOND,
2*GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
            gst_object_unref (src_asset);
            g_free(uri); 
        }    

        pipeline = ges_pipeline_new ();
        if (!ges_pipeline_set_timeline (pipeline, timeline))
            return;

        ges_timeline_commit(timeline);

        gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
        mainloop = g_main_loop_new (NULL, FALSE);
        g_timeout_add_seconds (4+1, (GSourceFunc) g_main_loop_quit, mainloop);
        g_main_loop_run (mainloop);

        gst_object_unref (timeline);
        gst_object_unref (pipeline);
    }
    printf
("+-------------------------------------------------------------------------------------+\n");
    printf ("check memory consumption after playing first playlist (enter any
number! and press enter)\n");
    printf ("you can close video window\n");
    scanf("%d",&a);
    if(1){
        GMainLoop *mainloop;
        timeline = ges_timeline_new_audio_video ();


        // Adding clips to the timeline
        if(1) {
            GESAsset *src_asset;
            GESLayer *layer;
            gchar *uri;
            GESUriClipAsset *asset;        

            layer = ges_timeline_append_layer(timeline);

            uri = gst_filename_to_uri (firstFileAddress, NULL);
            asset = ges_uri_clip_asset_request_sync(uri,NULL);
            src_asset = GES_ASSET(asset);
            ges_layer_add_asset (layer, src_asset, 0*GST_SECOND, 5*GST_SECOND,
2*GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
            gst_object_unref (src_asset);
            g_free(uri); 
        }    

        // Adding clips to the timeline
        if(1) {
            GESAsset *src_asset;
            GESLayer *layer;
            gchar *uri;
            GESUriClipAsset *asset;        

            layer = ges_timeline_append_layer(timeline);

            uri = gst_filename_to_uri (secondFileAddress, NULL);
            asset = ges_uri_clip_asset_request_sync(uri,NULL);
            src_asset = GES_ASSET(asset);
            ges_layer_add_asset (layer, src_asset, 2*GST_SECOND, 5*GST_SECOND,
2*GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
            gst_object_unref (src_asset);
            g_free(uri); 
        }    

        pipeline = ges_pipeline_new ();
        if (!ges_pipeline_set_timeline (pipeline, timeline))
            return;

        ges_timeline_commit(timeline);

        gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
        mainloop = g_main_loop_new (NULL, FALSE);
        g_timeout_add_seconds (4+1, (GSourceFunc) g_main_loop_quit, mainloop);
        g_main_loop_run (mainloop);

        gst_object_unref (timeline);
        gst_object_unref (pipeline);
    }

    printf ("check process memory consumption after playing final playlist\n");
    scanf("%d",&a);
      return 0;
}

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