{"id":191,"date":"2014-08-03T18:08:46","date_gmt":"2014-08-03T16:08:46","guid":{"rendered":"https:\/\/coaxion.net\/blog\/?p=191"},"modified":"2014-08-05T13:36:55","modified_gmt":"2014-08-05T11:36:55","slug":"gstreamer-playback-api","status":"publish","type":"post","link":"https:\/\/coaxion.net\/blog\/2014\/08\/gstreamer-playback-api\/","title":{"rendered":"GStreamer Playback API"},"content":{"rendered":"

Update: <\/strong> the code is now also available on GitHub<\/a> which probably makes it easier for a few people to use it and contribute. Just send pull requests or create issues in the issue tracker of GitHub.<\/p>\n

Over the last years I noticed that I was copying too much code to create simple GStreamer<\/a> based playback applications. After talking to other people at GUADEC<\/a> this year it was clear that this wasn’t only a problem on my side but a general problem. So here it is, a convenience API for creating GStreamer based playback applications: GstPlayer<\/a>.<\/p>\n

The API<\/a> is really simple but is still missing many features<\/a>:<\/p>\n

GstPlayer *  gst_player_new       (void);\r\n\r\nvoid         gst_player_play      (GstPlayer * player);\r\nvoid         gst_player_pause     (GstPlayer * player);\r\nvoid         gst_player_stop      (GstPlayer * player);\r\nvoid         gst_player_seek      (GstPlayer * player, GstClockTime position);\r\nvoid         gst_player_set_uri   (GstPlayer * player, const gchar * uri);\r\n...\r\n<\/pre>\n
Additionally to that there are a few other properties (which are not only exposed as setters\/getters but also as GObject properties), and signals to be notified about position changes, errors, end-of-stream and other useful information. You can find the complete API documentation here<\/a>. In general the API is modeled similar to other existing APIs like Android’s MediaPlayer<\/a> and iOS’ AVPlayer<\/a>.<\/p>\n
Included are also some very, very simple commandline<\/a>, GTK+<\/a>, Android<\/a> (including nice Java bindings<\/a>) and iOS<\/a> apps. An APK for the Android app can also be found here<\/a>. It provides no way to start a player, but whenever there is a video or audio file to be played it will be proposed as a possible application via the Android intent system.<\/p>\n
In the end the goal is to have a replacement for most of the GStreamer code in e.g. GNOME<\/a>‘s Totem<\/a> video player, Enlightenment<\/a>‘s Emotion<\/a> or really any other playback application, and then have it integrated in a gst-plugins-base library (or a separate module with other convenience APIs).<\/p>\n
While this is all clearly only the start, I hope that people already take a look at this and consider using it for their projects, provide patches, or help making the included sample apps really useful and nice-looking. Apps for other platforms (e.g. a Qt<\/a> app, or one written in other languages like C# or Python) would also be nice to have. And if you’re an Android or iOS or Qt developer and have no idea about GStreamer you can still help by creating an awesome user interface \ud83d\ude42 Ideally I would like to get the Android and iOS app into such a good shape that we can upload them to the app stores as useful GStreamer playback applications, which we could then also use to point people to a good demo.<\/p>\n
If you’re interested and have some time to work on it or try it, please get in contact with me.<\/p>\n","protected":false},"excerpt":{"rendered":"
Update: the code is now also available on GitHub which probably makes it easier for a few people to use it and contribute. Just send pull requests or create issues in the issue tracker of GitHub. Over the last years I noticed that I was copying too much code to create simple GStreamer based playback … Continue reading GStreamer Playback API<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,6,5],"tags":[],"class_list":["post-191","post","type-post","status-publish","format-standard","hentry","category-free-software","category-gnome","category-gstreamer"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/posts\/191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/comments?post=191"}],"version-history":[{"count":22,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/posts\/191\/revisions"}],"predecessor-version":[{"id":214,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/posts\/191\/revisions\/214"}],"wp:attachment":[{"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/media?parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/categories?post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coaxion.net\/blog\/wp-json\/wp\/v2\/tags?post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}