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Original commit message from CVS: * docs/manual/advanced-autoplugging.xml: * docs/manual/basics-helloworld.xml: * docs/manual/basics-pads.xml: * docs/random/ds/0.9-suggested-changes: * gst/gstelement.c: (gst_element_class_init), (gst_element_seek): * gst/gstelement.h: * gst/gstevent.h: * gst/gstformat.h: * gst/gstquery.h: * gst/gststructure.c: (gst_structure_value_get_generic_type), (gst_structure_parse_array), (gst_structure_parse_value): * gst/gstvalue.c: (gst_type_is_fixed), (gst_value_list_prepend_value), (gst_value_list_append_value), (gst_value_list_get_size), (gst_value_list_get_value), (gst_value_transform_array_string), (gst_value_serialize_array), (gst_value_deserialize_array), (gst_value_intersect_array), (gst_value_is_fixed), (_gst_value_initialize): * gst/gstvalue.h: GstElement::new-pad -> pad-added, GstElement::state-change -> state-changed, GstValueFixedList -> GstValueArray, add format and flags as their own arguments in gst_element_seek() (should improve "bindeability"), remove function generators since they don't work under a whole bunch of compilers (they were deprecated already anyway).
143 lines
5 KiB
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143 lines
5 KiB
Text
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API:
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- MAKE A DOCUMENT THAT LISTS ALL API CHANGES AND HOW TO DEAL WITH THEM
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- GstElementState should be a real enum, not something that looks like flags
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changing state can be done with ++ and -- instead of >> and <<
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- replace object/structure set/get macros with actual functions.
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- events should all use GstStructure
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- reorganize headers (split app headers vs plugin headers maybe)
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while at it also make sure to only allow including of the main headers like
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glib, so we can freely shuffle stuff around
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- make GstPadLinkReturn internal (to either plugins+core or just core)
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and return gboolean to apps.
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- rewrite GstIndex (it's gross)
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- gst_init() et al. need to work correctly when called multiple times
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and from libraries, etc.
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- gst_pad_get_pad_template_caps -> gst_pad_get_template_caps()
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- make templates mandatory for pads.
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- force pads to use a pad template from the element they belong to.
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- s/PadTemplate/PadFactory/ to describe better what it is and be more in line
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with the rest of the API?
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- add ways for autopluggers to manage negotiation of their children.
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This would allow autopluggers to no longer need helper identities.
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(Though the main reason for identities atm is to be able to connect without
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plugging - Company)
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- remove float support from dparams
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- dparams: should be converted into some kind of special pad and
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object property combination.
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- read/write locks on buffers
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- be able to send events to unlinked pads (bug #114442)
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- caps should have a flag on fields to indicate that the field is optional
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- deprecate gst_buffer_merge() and replace with a function that takes
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ownership of the buffers. (bug #136408)
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- fakesrc handoff should be changed to return a GstData * or carry a
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GstData **, wo the user can provide own buffers and events.
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- remove GST_OBJECT_DESTROYED()
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- fix plugin code to load plugins with RTLD_LOCAL
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- don't install gstmarshal.h
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- remove unnecessary headers from gst.h (gstqueue.h in particular)
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- make sure GstClockTime is used wherever it should (e.g. gstplay)
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- make gst_bin_get_list virtual so subclasses can override it (e.g.
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gst-play which contains an internal thread not inside the bin that is
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gstplay)
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- make gst_bin_get_by_interface search on the list provided by this get_list
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so that you can search a GstPlay for an element implementing the interface
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(right now gstplay has added a gst_play_get_by_interface)
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- make multichannel properties on audio caps manditory
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- talk to vektor about various wierdness with NTSC video (combinations of
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24 fps pulled down to 60 and straight video, etc) and make sure our
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video stream descriptions make sense.
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- remove GstMemChunk
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- do an audit to remove GtkObject-isms from gtk-1.2
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caps:
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(Company:)
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"An idea I had once was to force registration of mimetypes and then
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only allow caps with a registered mimetype - like it's done now with caps.
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You could then add functions to those registrations like
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- gchar *get_human_readable_string (caps);
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should be kinda selfexplanatory. Would return stuff like "16bit signed
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integer audio", "MPEG2 video" or "video format in RGB colorspace" (for
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unfixed RGB)
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- GstCaps *default_fixate (const GstCaps *caps);
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A default fixation function, so we don't fixate to minimum integer
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anymore but have the ability to fixate to 320x240 for video or 44100 for
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audio rates
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- gboolean validate (const GstCaps *caps);
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check if the given caps are ok for this mimetype - debugging only function
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I'd _really_ like to have - especially during gst_register.
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But that's 0.10 material."
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(Thaytan)
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- Add rowstride as a property so that video frames don't have to have
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rowstride == width. For example, gdkpixbufdec would prefer to pad
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rowstrides to multiples of 4 bytes.
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negotiation:
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- autopluggers would be easier to write if there was a core method
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to do what plugidentities do.
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- there should be a way to hook into negotiation and be able to do something if
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negotiation fails. Autopluggers would need that for exchanging elements when
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they can't link.
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bugs with interesting info:
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XML descriptions of plugin information:
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http://bugzilla.gnome.org/show_bug.cgi?id=114216
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object hierarchy:
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- a method for elements to know when downstream elements are ignoring
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the data stream. This would allow automatic shutoff of pipelines
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whose processing is being dumped.
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- object properties:
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- all bitrates should be bits per second, since they're specified
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as integers
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- use device for nodes (not location; dvdreadsrc, dvdnavsrc, cdparanoia).
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Also figure out if we want to continue separating uri/location.
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- categorization of plugins:
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- categories were intended from the start as a list of keywords, instead
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of an implicit tree.
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- this makes a lot more sense and probably fixes our constant discussion
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about categorizing
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- make this explicit by having a list of keywords instead of a fixed string
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with slashes
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- fix the editor/el browser to display this nicely
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