create slightly more correct headers & add "ffmpeg" user-data section


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- Changes on AVI and WAV muxers to support MP3.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@324 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

- Changes on AVI and WAV muxers to support MP3 encoding.


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q-pel mc support
neither is totally bugfree yet though :(


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  fixing some compilation problems


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- Now the properties of the AVIs are correctly shown, but the MP2 audio
isn't playable, it seems the problems is that Fraunhoffer MP3 decoder
included on Windows cannot decode MP2 streams.


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sure it works ok. Also it's slow, so use it only when you _really_ need to
measure quality.
- Fix libavcodec Makefile to enable profiling.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@314 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

fixing msmpeg4 decoding if fps < 16 (i thought it was a indicator for the ext header, its the fps indeed)


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- H.263+ should be able to decode streams with AIC now :)


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git-svn-id: file:///var/local/repositories/ffmpeg/trunk@310 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

   by:  Philipp Matthias Hahn <pmhahn@titan.lahn.de>


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@309 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

  - introduced MOVQ_WONE, MOVQ_WTWO
* unrolled put_pixels_clamped_mmx
* added .baling where the jump address would be compiled on odd address
* added some testing code to disable all these routines (for time measurement)


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* ignoring error from msmpeg4_decode_block


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* simplified indexing


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bug found by Lennert Buytenhek <buytenh@gnu.org>


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optimized the normal bitstream writer, its faster than the alternative one on p3 now ... lets hope its at least not slower on p4 & k7


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(makeing some constant arrays global, merging put_bits(), ...)


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alternative bitstream writer (disabled by default, uncomment #define ALT_BISTREAM_WRITER in common.h if u want to try it)


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average variance for picture's MBs so we can adjust qscale on the MB layer.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@294 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

DCT/Quantization is done after we have calculated all the MV of the picture.
- This is the preamble for a better bit rate control.


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- RTP callback system implemented for H.263/H.263+.
- Bug fix on DC coefficients of H.263.
- H.263 decoder now returns PTS on picture number.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@292 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

this includes the range for quantized dct coefficients in dct_quantize()  (-1023...1023)


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this patch enhances the jpeg header writer. It can be asked to omit
quantisation and huffman tables and it can write different horizontal and
vertical sampling factors. (the last thing is useless for libavcodec
itself (because libavcodec only handles YUV420P at ecoder level), but the
values are initialized so that operation of libavcodec is not impaired)


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