FFmpeg

Commit Graph

Author	SHA1	Message	Date
Justin Ruggles	cf7c961b19	Do not calculate psd and masking curve if exponents are being reused. Approx. 20% faster in function bit_alloc_masking(). Originally committed as revision 26042 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	68e6b0990d	cosmetics: reindent after last commit Originally committed as revision 26041 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	795063db3b	Copy bap from previous block when exponent strategy is EXP_REUSE. We can do this because exponents are the only bit allocation parameters which change from block-to-block currently. Approx. 57% faster in function bit_alloc(). Approx. 25% faster overall encoding. Originally committed as revision 26040 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	126a29b871	Count grouped mantissas for each block all at once at the end of bit allocation for each block. 24% faster in function bit_alloc(). Approx. 10% faster overall encoding. Originally committed as revision 26039 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	e7536ac567	Count bits for fixed parameters at start of encoding rather than in every frame. Originally committed as revision 26038 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	e86ea34dad	Use a LUT for number of exponent groups. This avoids recalculating it for every block and channel for every frame. Originally committed as revision 26037 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	834550ea0d	Speed up group minimum and group output calculations for EXP_D25 and EXP_D45 in encode_exponents_blk_ch() by removing the inner loops. This is about 30-40% faster for the modified sections. Originally committed as revision 26036 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	cdedf7e625	Convert a for() loop into a while() loop for the downward part of the exponent delta limiting. Originally committed as revision 26035 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	27af78cf0e	Redesign encode_exponents_blk_ch() so that duplicate exponent sets are no longer required. This gets rid of the temp buffer as well as encoded_exp in AC3EncodeContext. It also allows for skipping the exponent grouping for EXP_D15. 56% faster in encode_exponents_blk_ch(). Originally committed as revision 26034 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	8846ee54ad	Use optimized function DSPContext.sad[0]() instead of calc_exp_diff(). 90% faster compute_exp_strategy(). Originally committed as revision 26033 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	7786c384f6	cosmetics: pretty-printing after last commit Originally committed as revision 26031 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	89bedc4d2e	Add a goto for init failure instead of duplicate calls to ac3_encode_close(). Originally committed as revision 26030 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	c41ac4f82e	Use pre-allocated temp buffers in mdct512(). 5% faster in function. Originally committed as revision 26029 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	e29065f7bf	Write results of post-rotation complex multiply directly to output. 2% faster in function mdct512(). Originally committed as revision 26028 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	9d8533368f	Use memcpy() instead of a for loop in mdct512(). 8% faster in function. Originally committed as revision 26027 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	b6f6204db9	Allocate all large per-channel arrays using av_malloc(). Decreases memory usage for less than 6 channels. Originally committed as revision 26026 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	aa645b9888	Make windowed_samples 16-byte aligned. This will allow future SIMD optimization of the window function. Originally committed as revision 26025 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	e8d21fba3f	Allocate planar_samples using av_mallocz(). Lowers memory usage when encoding less than 6 channels. Originally committed as revision 26024 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	171bc51c9b	Allocate bap and bap1 buffers using av_malloc(). This reduces the memory footprint when using less than 6 channels. Modify bit allocation to swap the 2 buffers instead of using memcpy() and use per-block pointers for bap. This is slightly faster (0.3%) in function cbr_bit_allocation(). Originally committed as revision 26023 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	1c3e117e0b	Remove last_samples[] and copy directly from planar_samples[]. Avoids memcpy that was used to store last samples for next frame. Approx. 3% faster in function deinterleave_input_samples() and reduces memory usage by 3kB. Originally committed as revision 26021 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	7eeca961e3	Remove unneeded line. key_frame is already set to 1 in avcodec_alloc_frame(). Originally committed as revision 26020 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	2d82d9b1df	cosmetics: comment clean-up and misc cosmetics Originally committed as revision 26019 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	5901cebecd	Separate most of the per-block arrays into a separate per-block struct. Originally committed as revision 26018 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	cb6247cb30	Split bit allocation search into a separate function. Originally committed as revision 26017 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	06f6f78578	10l: fix typo in compute_exp_strategy() Originally committed as revision 26013 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	266d24be4a	Move large arrays to AC3EncodeContext rather than passing them around. Originally committed as revision 26012 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	7da4dc17d9	cosmetics: line wrap and spacing Originally committed as revision 26011 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	a0d763fc88	Use a single value for SNR offset in the bit allocation search rather than the separate coarse and fine values. Originally committed as revision 26010 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	70fcd7ea80	Change bit_alloc() to return the mantissa bit count. Originally committed as revision 26009 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	937cd1467c	cosmetics: alignment and line wrap after last commit Originally committed as revision 26008 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	359c1d1926	Move bit counts to AC3EncodeContext. Originally committed as revision 26007 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	793bbf9544	Split out setting of bit allocation parameters to a separate function. Th new function only needs to be called at initialization because bit allocation parameters currently do not change during encoding. Originally committed as revision 26003 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	8999944ecb	Split out counting of frame bits into a separate function. Originally committed as revision 26002 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	33a7d549e8	cosmetics: vertical alignment Originally committed as revision 26001 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	d3325d555b	Only calculate num_exp_groups once. Originally committed as revision 26000 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	dc0bc0f84e	Check for bit allocation error in ac3_encode_frame(). Move error log printout to ac3_encode_frame(). Originally committed as revision 25999 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	f94bacc538	Split out grouping of exponents into a separate function. Originally committed as revision 25998 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	b6a1e5236e	Split out mantissa quantization into separate functions. Originally committed as revision 25997 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	5b44ede0ba	cosmetics: rearrange some functions Originally committed as revision 25996 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	d7da80806c	Reverse the exponent & exponent strategy array arrangement to simplify the per-channel exponent strategy decision. This will also make it easier to plug-in other exponent strategy algorithms. Originally committed as revision 25995 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	67d979fede	Move writing of frame to the output bitstream to a separate function. Originally committed as revision 25994 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	084f5c5afe	cosmetics: remove a comment and just spacing Originally committed as revision 25993 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	160d85f5b0	Split frame size adjustment into a separate function. Originally committed as revision 25992 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	dfdf73eb1a	Split exponent processing into separate functions. Originally committed as revision 25991 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	0a0a8500fb	Split applying of MDCT into several separate functions. Originally committed as revision 25990 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	4acc790f3c	Split input sample deinterleaving into a separate function. Originally committed as revision 25989 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	152cc52803	Separate functionally different calculations in ac3_encode_frame(). Originally committed as revision 25988 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	98f6ee4453	cosmetics: rename 2 variables Originally committed as revision 25987 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	12ed622699	Deinterleave whole frame at once instead of per-block. This reduces the amount of memcpy() by using pointers to overlap samples for successive blocks rather than copying. Originally committed as revision 25986 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Justin Ruggles	e0685bc98f	cosmetics: add & alter some comments Originally committed as revision 25985 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago

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281 Commits (a4bda405447b13e84b4004ab281ae01abd230e22)