FFmpeg

Commit Graph

Author	SHA1	Message	Date
Michael Niedermayer	99cd59e58f	minor optimization Originally committed as revision 4128 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	3c096ac791	optimizing unpack_coeffs() Originally committed as revision 4127 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Yartrebo	86e59cc01d	Snow segfault bug in revision 1.43 patch by (Yartrebo /yartrebo earthlink net/) Originally committed as revision 4126 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	f5a719287d	rescale coefficients during IDWT, that way the lifting steps are much simpler and faster Originally committed as revision 4119 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	a0a74ad9f0	increasing precission of the quantization parameter this is needed as the quantization stepsize for each subband is also in this precission and insignificant changes to the wavelet like scaling its coefficients slightly differently would lead to wildly variing PSNR and bitrate note, a encoder could also simply choose to leave the least significant bits of the quantization parameters zero which would give the exact previous behaviour except a y very tiny number of bits in the header Originally committed as revision 4115 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	c97de57c39	fix QROOT != 8 Originally committed as revision 4114 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	538a38418c	10% faster unpack_coeffs Originally committed as revision 4108 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	3cff4572ce	fixing lossless snow Originally committed as revision 4107 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	565a45ace3	merge vertical lifting steps and a little cleanup Originally committed as revision 4104 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Yartrebo	a0d1931c0e	Snow Slicing patch by (Yartrebo) yartrebo earthlink net Originally committed as revision 4101 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Loren Merritt	f9e6ebf7f9	slice-based idwt (10% faster decoding) Originally committed as revision 4040 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	53513831da	-strict -1 comment fix Originally committed as revision 3976 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	934982c4ac	avoid buf_size == 0 checks in every decoder Originally committed as revision 3872 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Matthieu Castet	d06c75a830	10l patch by (matthieu castet <castet.matthieu free fr>) Originally committed as revision 3842 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	0ecca7a49f	various security fixes and precautionary checks Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Gianluigi Tiesi	8ff53f5b07	Disable encoders patch by (Gianluigi Tiesi <mplayer netfarm it>) Originally committed as revision 3797 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	2554db9b5f	fix for build on IRIX by (Michel Bardiaux {mbardiaux peaktime be}) Originally committed as revision 3713 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	2886975773	CABAC -> range coder Originally committed as revision 3655 to svn://svn.ffmpeg.org/ffmpeg/trunk	20 years ago
Michael Niedermayer	d7d51926dd	unused Originally committed as revision 3502 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	715a97f0c0	merge predict_plane() with DWTELEM->8bit conversation (21% faster) Originally committed as revision 3499 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	034aff036f	8 -> FRAC_BITS Originally committed as revision 3489 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
D Richard Felker III	aa25a462b6	consistent use of types patch by (D Richard Felker III <dalias at aerifal dot cx>) Originally committed as revision 3480 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Loren Merritt	7c2425d239	simplify getsymbol patch by (Loren Merritt <lorenm at u dot washington dot edu>) Originally committed as revision 3476 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	bd368b565b	per picture psnr Originally committed as revision 3465 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	d92b58073e	100l (forgot to set the 8x8 mc functions, so ME did use the mpeg ones ...) Originally committed as revision 3456 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	ec69758781	use h264 MC code if possible 50% faster predict_plane() if mmx2/3dnow is available 0.1% bitrate increase Originally committed as revision 3455 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	3924dac4c8	use pointer arithmetic in mc_block(), 25% faster Originally committed as revision 3452 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	ff158dc95d	20% faster predict_plane() moion vector max/min fix Originally committed as revision 3434 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	19aa028dc5	10l (keyframes and context resets) Originally committed as revision 3426 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	39c61bbbd3	cleanup Originally committed as revision 3425 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	fff6d4ea4e	10l more benchmarking code inline Originally committed as revision 3424 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	ea7d9cd4bc	merge decode_subband() and dequantize() Originally committed as revision 3422 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	ff76515933	11% faster decode_subband() Originally committed as revision 3421 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	0cea8a037c	5% faster decode_subband() a little cleanup Originally committed as revision 3420 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	7b49c30974	46% faster decode_subband() Originally committed as revision 3419 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	3c1adccd1c	50% faster decode_subband() Originally committed as revision 3418 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	155ec6edf8	quad tree based motion compensation (currently only 16x16 & 8x8 OBMC blocks, but can be extended to other block sizes easily) different intra block coding (previous was just an ugly hack) 1.8% bitrate reduction -0.01PSNR (foreman@352x288 qscale=8) 1.5% bitrate reduction +0.05PSNR (foreman@352x288 qscale=1) Originally committed as revision 3416 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	64886072f5	edge bugfix 1-1.3% lower bitrate and +0.01 PSNR (foremen@352x288 qscale=1,8) Originally committed as revision 3414 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	46c281e8c1	cleanup Originally committed as revision 3377 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	93fbdb5ac5	lossless support Originally committed as revision 3374 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	3bb9f096d4	cleanup Originally committed as revision 3373 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	0635cbfc32	improved magnitude coding, 0.2% lower bitrate (foreman@352x288 qscale 1 and 8) Originally committed as revision 3372 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	bc68bfdde0	cleanup Originally committed as revision 3367 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	4f4e963383	various subband encoders (all either worse or complicated so they are commented out) different 0-context encoding, 1.2% lower bitrate (foreman@352x288 qscale=8) no significant change at qscale=1 Originally committed as revision 3366 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	620ab797f0	1/0 fix Originally committed as revision 3357 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	2ff9ff5bdf	dont segfault without -strict -1 Originally committed as revision 3356 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	da66b6313e	optimize quantizaton (about 3x faster) further opt is easily possible but could lead to overflows depening upon coefficient range, so this wont be done yet as it would make the code somewhat less flexible Originally committed as revision 3354 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	a8d73e56e6	cleanup remove ugly and slow vertical scaning code 0.1% bitrate increase (foreman@352x288 qp=1) 0.3% bitrate increase (foreman@352x288 qp=8) Originally committed as revision 3353 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	7848640356	use parent sample to predict significance & magnitude 1% bitrate reduction (foreman@352x288 qscale 1 & 8) Originally committed as revision 3352 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago
Michael Niedermayer	e071139a96	log2() & bsd Originally committed as revision 3350 to svn://svn.ffmpeg.org/ffmpeg/trunk	21 years ago

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203 Commits (b25d439233d1024a911bbb4a0f4f571d65607bc4)