Difference between revisions of "OpusTodo"

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(→‎SILK issues: updates)
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* <s>LLBR stereo issue (has a proposed fix)</s>
 
* <s>LLBR stereo issue (has a proposed fix)</s>
 
** <s>Introduces prefill bug (fixed on greg's tree)</s>
 
** <s>Introduces prefill bug (fixed on greg's tree)</s>
* Artefacts on SILK mono<->stereo switching
+
*<s>Artefacts on SILK mono<->stereo switching</s>
* Artefacts on SILK frame size switching (e.g. 960,480 glitches)
+
* <s>Artefacts on SILK frame size switching (e.g. 960,480 glitches)</s>
 +
* Reduce SILK bandpass switching artefacts
 
* <s>Use of signed overflow (undefined in C), intentionally and otherwise. </s>
 
* <s>Use of signed overflow (undefined in C), intentionally and otherwise. </s>
 
* Encoder triggers DTX randomly (even if not enabled) for 40/60 ms stereo frames
 
* Encoder triggers DTX randomly (even if not enabled) for 40/60 ms stereo frames
 
* <s>CLANG ARITHMETIC UNDEFINED at <silk/silk_NSQ_del_dec.c, (652:33)> : Op: *, Reason : Signed Multiplication Overflow, BINARY OPERATION: left (int32): 90005 right (int32): -25578</s>
 
* <s>CLANG ARITHMETIC UNDEFINED at <silk/silk_NSQ_del_dec.c, (652:33)> : Op: *, Reason : Signed Multiplication Overflow, BINARY OPERATION: left (int32): 90005 right (int32): -25578</s>
 +
* CLANG ARITHMETIC UNDEFINED at <silk/decode_core.c, (108:40)> : Op: *, Reason : Signed Multiplication Overflow, BINARY OPERATION: left (int32): 916258817 right (int32): -3
 +
* CLANG ARITHMETIC UNDEFINED at <silk/decode_core.c, (108:40)> : Op: +, Reason : Signed Addition Overflow, BINARY OPERATION: left (int32): -418535217 right (int32): -1832517634
 +
* CLANG ARITHMETIC UNDEFINED at <./silk/Inlines.h, (120:13)> : Op: -=, Reason : Signed Subtraction Overflow, BINARY OPERATION: left (int32): 2147454976 right (int32): -2147467848
 +
<!-- ./test_opus voip 48000 2 32000 -bandwidth WB -framesize 10 /home/gmaxwell/big-fb.sw /dev/null -->
 
* Review Tim's "LSB with no pulses" fix
 
* Review Tim's "LSB with no pulses" fix
  

Revision as of 17:56, 27 September 2011

Code

For IETF draft

  • Code cleanup (any left?)
  • Multi-channel signalling (done, needs more testing)

SILK issues

  • PLC buffer not fully initialized (fix needs verifying)
  • Mid and side using different sampling rates (fix needs verifying)
  • LLBR stereo issue (has a proposed fix)
    • Introduces prefill bug (fixed on greg's tree)
  • Artefacts on SILK mono<->stereo switching
  • Artefacts on SILK frame size switching (e.g. 960,480 glitches)
  • Reduce SILK bandpass switching artefacts
  • Use of signed overflow (undefined in C), intentionally and otherwise.
  • Encoder triggers DTX randomly (even if not enabled) for 40/60 ms stereo frames
  • CLANG ARITHMETIC UNDEFINED at <silk/silk_NSQ_del_dec.c, (652:33)> : Op: *, Reason : Signed Multiplication Overflow, BINARY OPERATION: left (int32): 90005 right (int32): -25578
  • CLANG ARITHMETIC UNDEFINED at <silk/decode_core.c, (108:40)> : Op: *, Reason : Signed Multiplication Overflow, BINARY OPERATION: left (int32): 916258817 right (int32): -3
  • CLANG ARITHMETIC UNDEFINED at <silk/decode_core.c, (108:40)> : Op: +, Reason : Signed Addition Overflow, BINARY OPERATION: left (int32): -418535217 right (int32): -1832517634
  • CLANG ARITHMETIC UNDEFINED at <./silk/Inlines.h, (120:13)> : Op: -=, Reason : Signed Subtraction Overflow, BINARY OPERATION: left (int32): 2147454976 right (int32): -2147467848
  • Review Tim's "LSB with no pulses" fix

Later

  • Exposed CELT constrained VBR
  • Fixed-point build
  • Fix build system (right now it fails to build shared libraries, drops .o files all over)
  • Floating point API
  • Usable command-line tools (opus is a major regression from libcelt right now)
  • Smart automatic mode decision
  • psymodel based VBR
  • Remove copy in inverse MDCT
  • Save some float<->int conversions

Spec

  • Finish codec draft
  • Ogg mapping (including multi-channel). See: OggOpus
  • RTP payload format

Other

  • Logo
  • Test vectors
  • Listening tests
  • Documentation (at a minimum every exported symbol should have complete and accurate documentation)
  • Add content to opus-codec.org
  • Oggz-validate (should also validate opus toc)
    • The above documentation
    • Presentations
    • Examples and test results (hyperlink to Monty's demo, gmaxwell's HA results page, etc)
  • Useful example software (e.g. streaming software that works correctly) (opus-tools in xiph git)
    • Support for resampling in tools

Third party software

  • Support in ekiga
  • Support in mumble
  • Support in asterisk
  • Support in firefox (rtcweb and in ogg)
  • Support in VLC
  • Support in ogg123
  • Support in ffmpeg
  • Support in rockbox
  • Support in foobar2000
  • Support in gstreamer
  • Support in mplayer
  • Support in xmms
  • Support in oggdsf
  • Support in xiphqt