FFmpeg

Commit Graph

Author	SHA1	Message	Date
Jason Garrett-Glaser	2a1f431d38	H.264/SVQ3: make chroma DC work the same way as luma DC No speed improvement, but necessary for some future stuff. Also opens up the possibility of asm chroma dc idct/dequant. Originally committed as revision 26349 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Jason Garrett-Glaser	5657d14094	H.264: switch to x264-style tracking of luma/chroma DC NNZ Useful so that we don't have to run the hierarchical DC iDCT if there aren't any coefficients. Opens up some future opportunities for optimization as well. Originally committed as revision 26337 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Jason Garrett-Glaser	19fb234e4a	H.264: split luma dc idct out and implement MMX/SSE2 versions About 2.5x the speed. NOTE: the way that the asm code handles large qmuls is a bit suboptimal. If x264-style dequant was used (separate shift and qmul values), it might be possible to get some extra speed. Originally committed as revision 26336 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Diego Biurrun	ba87f0801d	Remove explicit filename from Doxygen @file commands. Passing an explicit filename to this command is only necessary if the documentation in the @file block refers to a file different from the one the block resides in. Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Benoit Fouet	32e543f866	Replace @returns by @return . Originally committed as revision 22729 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Alexander Strange	767738f7a3	h264: Use + instead of \| in some places 6 insns less on x86-64/gcc 4.2. Originally committed as revision 22692 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Alexander Strange	601ca8c55c	h264: Remove unused function argument Originally committed as revision 22690 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Alexander Strange	f7ba470d58	h264: Simplify decode_cabac_residual() specialization Gives more consistent inlining with some compilers (such as llvm). Originally committed as revision 22689 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	8897b247a5	Remove some unneeded fill_rectangle() for 16x16 blocks. Originally committed as revision 22124 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Zhou Zongyi	821fe7f3e6	Optimize (amvd>2)+(amvd>32), about 1 cpu cycles faster. patch by Zhou Zongyi @ zhouzy () os punkt pku dot edu speck cn Originally committed as revision 22084 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	b5bd070029	Change mvd_cache & mvd_table to 8bit, this is overall a bit faster for high resolution videos. about 20cycles faster per MB for cathederal. Originally committed as revision 22038 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	81b5e4ee92	Calculate mvd without abs() same speed (ask gcc why, i dont know) Originally committed as revision 22035 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	855a1ba5e8	switch back to (amvd>2)+(amvd>32), its 5 cpu cycles faster now. Originally committed as revision 22032 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	01b35be14a	Factorize common code from the top of decode_cabac_mb_mvd() 10-15 cpu cycles faster. Originally committed as revision 22029 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	6d0155c79c	Replace mvd>2 + mvd>32 by MIN((mvd+28)*17>>9, 2) same speed as far as i can meassure but it might have fewer branches on some archs. Idea from x264 / jason Originally committed as revision 22027 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	90332debfe	Replace ad-hoc fill rectangle by fill_rectangle(). Originally committed as revision 22025 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	f4ce853125	get rid of an if() 1 cpu cycle faster. Originally committed as revision 21889 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	e69bfde6b2	Get rid of a local variable, 10 cpu cycles faster. Originally committed as revision 21888 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	a305449df6	Move abs() from decode_cabac_mb_mvd() to the code that writes mvd_cache. 4-8 cycles faster Originally committed as revision 21887 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	90a5849efd	Speedup decode_cabac_field_decoding_flag() by 9 cpu cycles. Originally committed as revision 21875 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	69cc31832f	Move check for and call of predict_field_decoding_flag() from the mb code to the row code. This function would only be needed on a MB basis for MBAFF+FMO Originally committed as revision 21860 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	59f733d1b1	2x faster ff_h264_init_cabac_states(), 4k cpu cycles less. Sadly this is just per slice so the speedup with normal files should be negligible. Originally committed as revision 21859 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	37a9719a97	2 cpu cycles faster context calculation for decode_cabac_intra_mb_type() Originally committed as revision 21845 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	5806e8cd1f	Drop a few redundant slice_num checks. Originally committed as revision 21844 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	053074276b	Drop compute_mb_neighbors() and move fill_decode_neighbors() up to take its role. Should be faster as this is a strict code removial. Originally committed as revision 21843 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	c1bb66ac19	Split setting neighboring MBs from fill_decode_caches() no speed change. Originally committed as revision 21842 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	cf55f59d5e	Simplify decode_cabac_mb_intra4x4_pred_mode(). same speed Originally committed as revision 21839 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	f4060611e9	Merge decode_cabac_mb_type_b() into calling code. This avoids a conditional branch and is about 3 cpu cyclues faster. Originally committed as revision 21838 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	64dd1b0a1d	Merge the single line function decode_cabac_mb_transform_size() into the calling code. 8 cpu cycles faster Originally committed as revision 21828 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	8b38d10761	indent Originally committed as revision 21827 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	f4b8b82514	Merge decode_cabac_mb_dqp() with surronding code. ~20 cpu cycles faster Originally committed as revision 21826 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	a59b9ee33d	Set sub_mb_type in direct_cache instead of just the direct flag. Simpler, cleaner and faster. Originally committed as revision 21822 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	2dc380ca8e	Store sub_mb_type in direct_cache/direct_table. This is equal complexity but could be more usefull. Originally committed as revision 21821 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	3d2c3ef4b4	Remove slice_table checks from decode_cabac_mb_cbp_luma() and set left/top_cbp so these checks arent needed. Originally committed as revision 21819 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	2773920698	Optimize decode_cabac_field_decoding_flag(). ~4 cpu cycles faster Originally committed as revision 21447 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Måns Rullgård	c67278098d	Move array specifiers outside DECLARE_ALIGNED() invocations Originally committed as revision 21377 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	7231ccf4d5	Cosmetic, get rid of &x[0] Originally committed as revision 21309 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	f432b43b08	Split fill_caches() between filter and decoder. Originally committed as revision 21271 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	c988f97566	Rearchitecturing the stiched up goose part 1 Run loop filter per row instead of per MB, this also should make it much easier to switch to per frame filtering and also doing so in a seperate thread in the future if some volunteer wants to try. Overall decoding speedup of 1.7% (single thread on pentium dual / cathedral sample) This change also allows some optimizations to be tried that would not have been possible before. Originally committed as revision 21270 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	ddd60f28d8	Replace cabac checks in inline functions from h264.h with constants. No benchmark because its just replacing variables with litteral constants (so no risk for slowdown outside gcc silliness) and i need sleep. Originally committed as revision 21237 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Michael Niedermayer	cc51b28299	Split cabac decoding code out of h264.c. not slower according to benchmarks. Originally committed as revision 21181 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago

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91 Commits (194be1f43ea391eb986732707435176e579265aa)