Theora:Beta1ToDo

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'''Open for Beta1'''
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{{historical}}
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* According to [http://trac.xiph.org/cgi-bin/trac.cgi/ticket/589 this ticket], beta1 should ship with a decoder supporting the whole spec.
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Beta 2 has been released. Please see the [[TheoraTodo]] page for newer work.
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* Main things from rillian's todo are:
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** Implement non-vp3 qi matrix support in the reference decoder.
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'''Open for Beta 1''' (obsolete ?)
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** Implement per-block qi switching as per the spec.
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** API updates. clean up api to add theora_ctl() for setting codec options, and move non-info-header data out of the theora_info struct into theora_state.
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* Add API call to request a duplicate compressed frame. (not release critical)
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* 4:2:2 and 4:4:4 pixel format support in the reference codec.
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----
----
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'''This can wait for the next beta but doesn't have to'''
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'''Further ideas'''
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* Add some sort of mmx(?) wims,VP3HoSwiYO or rodolphes sugestion?
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* API cleanup. Really, we should move non-info-header data out of the theora_info struct into theora_state. rillian wanted to do this for beta 1, but the alpha api has been in use so long, it's now felt that we should maintain compatibility for the 1.0 release. Instead we can provide theora_control() switches for this, and mark the theora_info struct entries as deprecated to encourage transition. Improvements should be made directly to the theora-exp api. When that's stable it can become the recommended client api, with the current compatibility layer in place for legacy applications.
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** There is a branch with liboil calls: [http://svn.xiph.org/branches/theora-oil/ theora-oil].
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** There is a branch of theora-lib with MMX optimization for encoding: [http://svn.xiph.org/branches/theora-mmx/ theora-mmx].
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** Also there is [http://svn.xiph.org/experimental/derf/theora-exp/ theora-exp], an experimental library supporting the whole spec and having also MMX optimization for decoding.
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----
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'''Already done:'''
'''Already done:'''
* Specs are finished.
* Specs are finished.
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* API updates: theora_packet_isheader(), theora_packet_iskeyframe(), theora_encoder_ctl(), theora_decoder_ctl() '''(in 1.0alpha4)'''.
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* API updates: theora_packet_isheader(), theora_packet_iskeyframe(), theora_encoder_ctl(), theora_decoder_ctl() were added in 1.0 alpha 4.
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* The encoder/decoder inloop filter mismatch was [http://trac.xiph.org/cgi-bin/trac.cgi/changeset/7026 fixed] in alpha4.
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* The encoder/decoder inloop filter mismatch was [http://trac.xiph.org/changeset/7026 fixed] in 1.0 alpha 4.
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* [http://trac.xiph.org/changeset/11119 Zero-length-packet is duplicate frame] as per the spec was implemented in 1.0 alpha 6.
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* MMX optimizations for encoding from /branches/theora-mmx/ were merged in 1.0 alpha 6 and enabled in 1.0 alpha 7.
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* According to [https://trac.xiph.org/ticket/589 this ticket], beta 1 should ship with a decoder supporting the whole spec.
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* Add theora_control() for setting codec options.
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* Change spec and implementation of the Ogg mapping to base granulepos on the count of decoded frames rather than the index of the current frames to match other Xiph codecs. Recommendation from Thomasvs.
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** http://lists.xiph.org/pipermail/theora-dev/2005-June/002798.html
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[[Category:Theora]]

Latest revision as of 08:55, 4 May 2008

This page is currently inactive and is kept primarily for historical interest.

Beta 2 has been released. Please see the TheoraTodo page for newer work.

Open for Beta 1 (obsolete ?)

  • Add API call to request a duplicate compressed frame. (not release critical)

Further ideas

  • API cleanup. Really, we should move non-info-header data out of the theora_info struct into theora_state. rillian wanted to do this for beta 1, but the alpha api has been in use so long, it's now felt that we should maintain compatibility for the 1.0 release. Instead we can provide theora_control() switches for this, and mark the theora_info struct entries as deprecated to encourage transition. Improvements should be made directly to the theora-exp api. When that's stable it can become the recommended client api, with the current compatibility layer in place for legacy applications.

Already done:

  • Specs are finished.
  • API updates: theora_packet_isheader(), theora_packet_iskeyframe(), theora_encoder_ctl(), theora_decoder_ctl() were added in 1.0 alpha 4.
  • The encoder/decoder inloop filter mismatch was fixed in 1.0 alpha 4.
  • Zero-length-packet is duplicate frame as per the spec was implemented in 1.0 alpha 6.
  • MMX optimizations for encoding from /branches/theora-mmx/ were merged in 1.0 alpha 6 and enabled in 1.0 alpha 7.
  • According to this ticket, beta 1 should ship with a decoder supporting the whole spec.
  • Add theora_control() for setting codec options.
  • Change spec and implementation of the Ogg mapping to base granulepos on the count of decoded frames rather than the index of the current frames to match other Xiph codecs. Recommendation from Thomasvs.
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