FFmpeg

Commit Graph

Author	SHA1	Message	Date
Rostislav Pehlivanov	0fc3a51353	lpc: add ff_lpc_calc_ref_coefs_f() function This commit adds a function to get the reflection coefficients on floating point samples. It's functionally identical to ff_lpc_calc_ref_coefs() except it works on float samples and will return the global prediction gain. The Welch window implementation which is more optimized works only on int32_t samples so a slower generic expression was used. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	9 years ago
Rostislav Pehlivanov	a70ee2bdcd	lpc: remove unused ff_lpc_calc_levinson() function Not needed anymore, it was only used by the AAC TNS encoder and was replaced with a more suitable function in the following commit. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	9 years ago
Rostislav Pehlivanov	141d80ded7	lpc: rename ff_lpc_calc_levinsion to ff_lpc_calc_levinson Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	9 years ago
Rostislav Pehlivanov	20962b567b	lpc: create a simplified Levinson-Durbin LPC handling float samples This commit simply duplicates the functionality of ff_lpc_calc_coefs() for the case of a Levinson-Durbin LPC with the only difference being that floating point samples are accepted and the resulting coefficients are raw and unquantized. The motivation behind doing this is the fact that the AAC encoder requires LPC in TNS and LTP and converting non-normalized floating point coefficients to int32_t using SWR and again back for the LPC coefficients was very impractical. The current LPC interfaces were designed for int32_t in mind possibly because FLAC and ALAC use this type for most internal operations. The mathematics in case of floats remains of course identical. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	9 years ago
Djordje Pesut	f85bc147fb	avcodec: Implementation of AAC_fixed_decoder (SBR-module) Add fixed poind code. Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	10 years ago
Michael Niedermayer	c117da9d3e	lpc: remove unneeded {} Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Reimar Döffinger	458aadf862	lpc: Reduce stack usage by allocating LLSModel in context. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Michael Niedermayer	85929b9caa	avcodec/lpc: remove unneeded {} Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Vittorio Giovara	60e0ee7ca2	lpc: always initialize ref and err CC: libav-stable@libav.org Bug-Id: CID 29585 / CID 700759	10 years ago
Michael Niedermayer	1e6816dcda	libavcodec/lpc.h: Fix duplicate words Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Diego Biurrun	c242bbd8b6	Remove unnecessary dsputil.h #includes	12 years ago
Martin Storsjö	8b25a20efb	lpc: Add a function for calculating reflection coefficients from samples Signed-off-by: Martin Storsjö <martin@martin.st>	12 years ago
Justin Ruggles	39ef66f530	lpc: Add a function for calculating reflection coefficients from autocorrelation coefficients Signed-off-by: Martin Storsjö <martin@martin.st>	12 years ago
Michael Niedermayer	a6cac64f69	compute_lpc_coefs: assert that normalize and fail have a supported combination Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Justin Ruggles	4b0e0f31bf	lpc: fix alignment of windowed samples for odd maximum LPC order Fixes crash on x86 due to alignment requirements for w_data in lpc_apply_welch_window_sse2().	13 years ago
Diego Biurrun	32f3c541bc	doxygen: Do not include license boilerplates in Doxygen comment blocks.	13 years ago
Diego Biurrun	da9cea77e3	Fix a bunch of common typos.	13 years ago
Anton Khirnov	188dea1dbf	lavc: move some flac-specific options to its private context.	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	7101b18508	Separate window function from autocorrelation. Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `77a78e9bdc`)	14 years ago
Justin Ruggles	0d8837bdda	Move lpc_compute_autocorr() from DSPContext to a new struct LPCContext. Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `56f8952b25`)	14 years ago
Justin Ruggles	77a78e9bdc	Separate window function from autocorrelation. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	56f8952b25	Move lpc_compute_autocorr() from DSPContext to a new struct LPCContext. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	23940f1405	Add AVCodecContext.lpc_type and Add AVCodecContext.lpc_passes fields. Add AVLPCType enum. Deprecate AVCodecContext.use_lpc. Originally committed as revision 24199 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Måns Rullgård	49bd8e4b84	Fix grammar errors in documentation Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Måns Rullgård	3da1180409	Move some prototypes from dsputil.c to reasonable header files Originally committed as revision 22260 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Vitor Sessak	82ab49dc41	Cosmetics: s/LPC_type/LPC_TYPE/ Originally committed as revision 15202 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Vitor Sessak	1be0fc2909	Avoid duplicating compute_lpc_coefs() function in both the RA288 and AAC decoders. Originally committed as revision 15193 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Stefano Sabatini	987903826b	Globally rename the header inclusion guard names. Consistently apply this rule: the guard name is obtained from the filename by stripping the leading "lib", converting '/' and '.' to '_' and uppercasing the resulting name. Guard names in the root directory have to be prefixed by "FFMPEG_". Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	ee8cc834ae	Add missing header includes to fix 'make checkheaders'. Originally committed as revision 14817 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	38c1a5c4d9	update my email address to one which does not depend on my service provider Originally committed as revision 14797 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	9045f5e72d	cosmetics: adjust line breaks and vertical alignment Originally committed as revision 14795 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	56c07e2989	use limited range of lpc orders when quantizing coefficients Originally committed as revision 14794 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Ramiro Polla	e9e3c9801e	lpc: cosmetics: vertically align declarations and definitions. Originally committed as revision 14792 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Ramiro Polla	c50da3ad6c	flacenc, lpc: Move LPC code from flacenc.c to new lpc.[ch] files. Originally committed as revision 14790 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	f0a838e525	Add missing #includes to fix 'make checkheaders'. Originally committed as revision 11087 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Aurelien Jacobs	f9cdbfa271	cosmetics: Add #endif comment. Originally committed as revision 10829 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Reimar Döffinger	72be7db423	Add support for decrypting asf files Originally committed as revision 10821 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	1b1ab19816	cosmetics: Add #endif comment. Originally committed as revision 10811 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Reimar Döffinger	2e9ad69aaf	Add support for DES en- and decryption. Originally committed as revision 10810 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	5b21bdabe4	Add FFMPEG_ prefix to all multiple inclusion guards. Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Luca Abeni	171dce486c	Support for AAC streaming over RTP. Fragmentation is not implemented yet Originally committed as revision 10491 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Luca Abeni	7fa9d0dd8f	Remove copyright from a function prototype Originally committed as revision 10214 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Luca Abeni	98561024ac	Move the RTP packetization code for MPEG12 video in its own file (rtp_mpv.c) Originally committed as revision 10201 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Diego Biurrun	f5a90186d7	Add missing license headers. Originally committed as revision 8149 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Fabrice Bellard	e3e105b38a	added include for ffserver dynamically loaded modules Originally committed as revision 809 to svn://svn.ffmpeg.org/ffmpeg/trunk	23 years ago

41 Commits (4c8d86eb18e2fc8fcd5819a33599422454fdeff8)