FFmpeg

Commit Graph

Author	SHA1	Message	Date
Mans Rullgard	1eb1f6f281	g723.1: remove useless uses of MUL64() The operands in both cases are 16-bit so cannot overflow a 32-bit destination. In gain_scale() the inputs are reduced to 14-bit, so even the shift cannot overflow. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	5a43eba956	g723.1: remove unnecessary argument 'shift' from dot_product() The 'shift' argument is always 1 so there is no need to pass it explicitly in every call. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	8b0de73464	g723.1: deobfuscate "(x << 4) - x" to "15 * x" The compiler performs this optimisation. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	05c36e0e5f	g723.1: fix addition overflow This addition must be done as 64-bit to avoid overflow and for the subsequent clipping to be meaningful. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	52aa3015a3	g723.1: simplify and fix multiplication overflow In 16-bit arithmetic, x * 0xffffc is simply x * -4 with extra overflows, (and the constant was probably meant to be 0xfffc). Combined with the shift, this simplifies to -x >> 1. Finally, clearing the low two bits with a 32-bit mask and switching to a 32-bit type allows more efficient code on 32-bit machines. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	e141cf2c57	g723.1: deobfuscate an expression (x << 2) - x is just an optimisation of 3 * x the compiler is perfectly capable of doing on its own. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	e2b7c5783d	g723.1: remove unused #includes Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Kostya Shishkov	e78e6c37ef	g723_1: clip argument for 15-bit version of normalize_bits() It expects maximum value to be 32767 but calculations in scale_vector() which uses this function can give it ABS(-32768) which leads to wrong result and thus clipping is needed.	13 years ago
Kostya Shishkov	f86b2f3661	g723_1: use all LPC vectors in formant postfilter Due to some mistake LPC vector for the first subframe was used for all subframes instead of their own LPC vectors.	13 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	13 years ago
Michael Niedermayer	70bcdfb39f	g732_1: reduce difference to qatar Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Kostya Shishkov	d3e0766fc0	g723_1: scale output as supposed for the case with postfilter disabled	13 years ago
Kostya Shishkov	94bfdfd6f0	g723_1: increase excitation storage by 4 Fixed codebook mode in 5300 rate may write up to SUBFRAME_LEN + 4 and that is considered normal by the reference decoder. Without that additional padding it might overwrite first elements of LPC history.	13 years ago
Kostya Shishkov	802bcdcb2f	g723_1: fix upper bound parameter from inverse maximum autocorrelation	13 years ago
Kostya Shishkov	8ddadea171	g723_1: make scale_vector() behave like the reference	13 years ago
Kostya Shishkov	8772d2511a	g723_1: fix off-by-one error in normalize_bits()	13 years ago
Kostya Shishkov	7f92db14f9	g723_1: save/restore excitation with offset to store LPC history The same buffer with saved data is used later in LPC reconstruction, so it should have some head space for LPC history.	13 years ago
Michael Niedermayer	62514ca012	g723.1dec: Make postfilter user switchable Code from qatar (`55c3a4f617`) Author of the code was probably Mohamed or Kostya Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	1eb1392690	g723.1: various cosmetics and changes that should have no user vissible effect. code from qatar (`55c3a4f617`) Author of the code was probably Mohamed or Kostya Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Mohamed Naufal Basheer	55c3a4f617	G.723.1 demuxer and decoder Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>	13 years ago
Paul B Mahol	60351ec13c	g723_1: add CODEC_CAP_DR1 Signed-off-by: Paul B Mahol <onemda@gmail.com>	13 years ago
Michael Niedermayer	1ebf6f941e	g723_1: change to encode2() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	a407baba85	g723_1: Fix "libavcodec/g723_1.c:988:8: warning: assignment from incompatible pointer type [enabled by default]" Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Paul B Mahol	69d766daa0	lavc: replace rest of deprecated SAMPLE_FMT_* with AV_SAMPLE_FMT_* Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	eac5987c4f	g723_1dec: update to new API Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	5174032953	g723.1: use memmove() where overlapping src and dst can happen. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Mohamed Naufal	ef64c45c94	g723.1 encoder Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Reimar Döffinger	812010c17e	Remove unused variable. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	13 years ago
Michael Niedermayer	04b4353f07	g723.1: very minor simplify of gen_acb_excitation() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	631eee6e90	g723.1: use MULL(a,b,15) for MULL2() idea by vitor Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	cb58adaaa3	g723.1: simplify scale_vector() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	431f8af824	g723.1: replace loop of normalize_bits( by av_log2() idea by vitor Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Vitor Sessak	6e505547f1	g723.1: cleanup square_root() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	c02c52f7b2	g723.1_ use skip_bits1() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	fac3ac3970	g723.1: use get_bits1() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	11512367d3	celp_math: cleanup ff_dot_product() based on code & idea by vitor Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Mohamed Naufal Basheer	f990dc374e	Add the G723.1 demuxer and decoder	13 years ago

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52 Commits (94170e041107a3831fdd39ebb53f4f50d06edea4)