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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,123 @@ | ||
| This is GStreamer Base Plugins 1.1.90 | ||
| This is GStreamer Base Plugins 1.2.0 | ||
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| Changes since 1.0: | ||
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| New API: | ||
| • GstContext negotiation / sharing / announcing for sharing a | ||
| generic context between elements, e.g. a display handle | ||
| • GL texture upload conversion meta for allowing different | ||
| buffer types to be converted to an OpenGL texture | ||
| • GstCapsFeatures as extension to GstCaps for allowing the | ||
| negotiation of specific memory or meta requirements between | ||
| elements | ||
| • GstMemory flags for contiguous and non-mappable memory | ||
| • The stream-start event has optional flags now, e.g. for signalling | ||
| sparse streams | ||
| • The stream-start even has an optional group-id field now to signal | ||
| all streams that should be played together | ||
| • Allocators library in gst-plugins-base, currently only with generic | ||
| dmabuf memory support | ||
| • insertbin library for easier handling of dynamically linked | ||
| pipelines (in -bad for now) | ||
| • EGL helper library (in -bad for now) | ||
| • MPEG-TS data structure library (in -bad for now) | ||
| • New GstVideoRegionOfInterestMeta to describe a region of interest on | ||
| video frames. | ||
| • GstVideoDecoder/Encoder has new ::flush() vfunc to replace the | ||
| ill-defined ::reset() vfunc. | ||
| • The URI query allows to query the redirected URI now. | ||
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| Major changes: | ||
| • New tool: gst-play-1.0 in gst-plugins-base for basic playback | ||
| testing on the command line. | ||
| • New plugins: | ||
| ∘ mssdemux for Microsoft Smooth Streaming | ||
| ∘ dashdemux for DASH adaptive streaming protocol | ||
| ∘ bluez for interaction with Bluetooth devices | ||
| ∘ openjpeg for JPEG2000 decoding and encoding | ||
| ∘ daala for experimental Daala decoding and encoding | ||
| ∘ vpx plugin has experimental VP9 decoding and encoding support | ||
| ∘ webp plugin for WebP decoding (encoding to be added later) | ||
| ∘ Various others: yadif, srtp, sbc, fluidsynth, midiparse, | ||
| mfc, ivtv, accuraterip and audiofxbad | ||
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| • Moved plugins: | ||
| ∘ dtmf, vp8rtp, scaletempo and rtpmux plugins are in | ||
| gst-plugins-good now | ||
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| • Video: | ||
| ∘ Fix handling of interlaced video in converters such as videoscale | ||
| and videoconvert (e.g. scale both fields independently) | ||
| ∘ videoconvert will try harder to minimise quality losses when | ||
| conversion is necessary | ||
| ∘ The experimental GstSurfaceConverter, GstSurfaceMeta and | ||
| GstVideoContext APIs from the (confusingly-named) | ||
| libgstbasevideo-1.0 library in gst-plugins-bad have now been | ||
| removed and been replaced by new APIs in GStreamer Core and | ||
| gst-plugins-base (see above). Since that was all that was left in | ||
| this library, the entire experimental libgstbasevideo-1.0 library | ||
| has been removed from gst-plugins-bad | ||
| ∘ Chroma subsampling and chroma siting conversion is better handled | ||
| in videoconvert and the support for interlaced video was improved. | ||
| ∘ New pinwheel and spoke patterns in videotestsrc | ||
| ∘ videomixer can now accept different video formats on its sinkpads | ||
| and converts to a common format during mixing | ||
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| • Audio: | ||
| ∘ audioconvert will try harder to minimise quality losses when | ||
| conversion is necessary | ||
| ∘ adder now allows muting/unmuting of its input streams, and also | ||
| per-input stream volume | ||
| ∘ pulseaudio elements can switch between devices during playback now | ||
| ∘ aacparse can convert between ADTS←→RAW | ||
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| • Platform specific changes: | ||
| ∘ Caps, events, etc. are now printed in the GStreamer debug logs | ||
| with their content instead of just the pointer address even on | ||
| non-glibc platforms (e.g. Windows, OSX, Android). | ||
| ∘ Network elements (UDP/TCP) now work better with platforms, | ||
| where IPv6 sockets can't handle IPv4 (e.g. Windows) | ||
| ∘ Linux/BSD: v4l2 had many improvements and cleanups | ||
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| • Other changes: | ||
| ∘ gst-libav now uses libav 9 | ||
| ∘ Static linking of plugins is supported now (also in 1.0.7) | ||
| ∘ rtspsrc: add support for NetClientClock: when the server suggests a | ||
| GstNetTimeProvider in the SDP, set up a GstNetClientClock that | ||
| slaves to the remote clock and suggest this clock in provide_clock. | ||
| Simplifies synchronized playback of a resource from an RTSP server. | ||
| gst-rtsp-server now supports adding this to the SDP and can provide | ||
| a network clock | ||
| ∘ RTP retransmission / NACK support and big RTP jitterbuffer improvements | ||
| ∘ SRTP and DTLS support | ||
| ∘ Changes to many elements and core to use the correct sticky event | ||
| order and also not lose any important sticky events during flushing | ||
| ∘ >1000 fixed bug reports, and many other bug fixes and other | ||
| improvements everywhere that had no bug report | ||
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| Things to look out for: | ||
| • Single header includes for all libraries, e.g. #include | ||
| <gst/video/video.h> - this was needed for some bindings. | ||
| • Stricter (correct) caps subset checking in some cases where this was | ||
| not correct before. Caps will now always fail to be a compatible | ||
| subset of another set of caps if the subset caps are missing some | ||
| fields that the superset caps have. This might lead to not-negotiated | ||
| errors if caps are incomplete now. However, it also prevents possible | ||
| data corruption caused by piping data formatted in an | ||
| incompatible/unexpected way into some elements. Check your h264 caps | ||
| for stream-format and alignment fields and AAC caps for the | ||
| stream-format field. This change will also be included in the next | ||
| stable 1.0.8 release. | ||
| • Stricter checking for missing events and correct sticky event order | ||
| (stream-start, caps, segment) in some places; this is not enabled in | ||
| stable releases by default, but you may get warnings when using git | ||
| builds, development releases or when compiling with | ||
| -UG_DISABLE_ASSERT in CFLAGS | ||
| • x264enc now outputs data in byte-stream by default if downstream has | ||
| ANY caps (e.g. appsink without caps set, filesink, udpsink, | ||
| tcpserversink etc.) | ||
| • The MPEG TS demuxer posts messages contain the PMT, PAT, etc. in a | ||
| different format now. This new format uses the data structures from | ||
| the new MPEGTS library | ||
| • The GstContext API has changed between 1.1.4 and 1.1.90 | ||
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