Commit graph

11 commits

Author SHA1 Message Date
Mark Nauwelaerts
578861abea replace gst_element_class_set_details_simple with gst_element_class_set_metadata 2012-09-14 17:27:49 +02:00
Ole André Vadla Ravnås
f3d8e3920d applemedia: only enqueue buffers in the VideoToolbox callbacks
These callbacks may fire from any thread, hence we should only enqueue
buffers and let the streaming thread take care of the rest as soon as
the blocking encode or decode operation has finished.
2010-12-10 04:07:05 +01:00
Ole André Vadla Ravnås
ebd2a6d6e9 applemedia: don't push synchronously from callback
The codec that called us might be holding locks to shared resources, so
we should never push downstream from within its buffer callback.

Note that a GstBufferList is not used here because we need to preserve
the buffer metadata held by our GstBuffer subclasses.
2010-11-11 00:22:31 +01:00
Ole André Vadla Ravnås
6b63954f63 vtenc: bump H.264 level from 1.3 to 3.0
This should be turned into a property.
2010-11-11 00:22:31 +01:00
Ole André Vadla Ravnås
d10e029f51 applemedia: biplanar is actually NV12, not I420
D'oh!
2010-11-08 23:58:25 +01:00
Ole André Vadla Ravnås
d865feca82 vtenc: remove keyframe enforcement workaround
Was only needed for old iOS where the H.264 encoder didn't support
kVTEncodeFrameOptionKey_ForceKeyFrame.
2010-11-08 23:58:25 +01:00
Ole André Vadla Ravnås
c2672f71cd applemedia: improve vtenc/vtdec performance
Profiling of H.264 encode and decode revealed that conversions
between packed and planar were happening behind the scenes.

Hence we now choose I420 instead of YUY2.
2010-11-08 14:02:50 +01:00
Ole André Vadla Ravnås
50c6e05924 applemedia: fix stream-format caps used for H.264
The stream-format's "avc-sample" member is now called just "avc".
2010-11-04 14:32:09 +01:00
Ole André Vadla Ravnås
c6b32b42de applemedia: switch vtapi to CFTypeRef style typedefs 2010-11-02 23:14:26 +01:00
Ole André Vadla Ravnås
2e349576eb applemedia: support public version of CoreMedia
Also rename the relevant API so we mirror the public API more closely, and
switch to CoreFoundation CFTypeRef style typedefs. We still support the old
private CoreMedia in order to not break OS X support.

This means that vtenc and vtdec are now compatible with iOS 4.x, and in
theory also future versions of OS X, where this API may turn public like
it has on iOS.
2010-11-02 23:14:26 +01:00
Ole André Vadla Ravnås
0e4e351b83 applemedia: New plugin for Apple multimedia APIs
Provides the following elements:

qtkitvideosrc: OS X video source relying on the QTKit API. Comes with
hard-coded caps as the API does not provide any way of querying for
formats supported by the hardware. Hasn't been tested a lot, but seems
to work.

miovideosrc: OS X video source which uses the undocumented/private
CoreMediaIOServices API, which is also the one used by iChat.
Present on latest version of Leopard and all versions of Snow Leopard.
Has been tested extensively with built-in cameras and TANDBERG's
PrecisionHD USB camera.

vtenc, vtdec: Generic codec wrappers which make use of the undocumented/
private VideoToolbox API on OS X and iOS. List of codecs are currently
hard-coded to H.264 for vtenc, and H.264 + JPEG for vtdec. Can easily be
expanded by adding new entries to the lists, but haven't yet had time to
do that. Should probably also implement probing as available codecs depend
on the OS and its version, and there doesn't seem to be any way to
enumerate the available codecs.

vth264decbin, vth264encbin: Wrapper bins to make it easier to use
vtdec_h264/vtenc_h264 in live scenarios.

iphonecamerasrc: iPhone camera source relying on the undocumented/private
Celestial API. Tested on iOS 3.1 running on an iPhone 3GS. Stops working
after a few minutes, presumably because of a resource leak. Needs some
love.

Note that the iOS parts haven't yet been ported to iOS 4.x.
2010-10-28 15:08:08 +02:00