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Commit Graph

20 Commits

Author SHA1 Message Date
Michael Niedermayer
6580a7b2b2
avcodec/celp_math: avoid overflow in shift
by making gain unsigned we have 1 bit more available
alternatively we can clip twice as in the g729 reference

Fixes: left shift of 23404 by 17 places cannot be represented in type 'int'
Fixes: 61728/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ACELP_KELVIN_fuzzer-6280412547383296

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2023-09-22 23:47:40 +02:00
Hendrik Leppkes
90c93fb129 Merge commit 'f023d57d355ff3b917f1aad9b03db5c293ec4244'
* commit 'f023d57d355ff3b917f1aad9b03db5c293ec4244':
  lavc: G.723.1 encoder

Split existing FFmpeg G.723.1 encoder into a new file.

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2015-12-07 15:50:45 +01:00
Mohamed Naufal
f023d57d35 lavc: G.723.1 encoder
Additional improvements by Michael Niedermayer <michaelni@gmx.at>.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2015-11-30 10:58:46 -05:00
Michael Niedermayer
dcbff35199 Merge commit 'd15c21e5fa3961f10026da1a3080a3aa3cf4cec9'
* commit 'd15c21e5fa3961f10026da1a3080a3aa3cf4cec9':
  avutil: Add a copy of ff_sqrt_tab back into avutil to restore ABI compatibility
  avutil: make some tables visible again
  avutil: remove inline av_log2 from public API
  celp_math: rename ff_log2 to ff_log2_q15

Conflicts:
	libavutil/libavutil.v

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-21 13:35:42 +02:00
Mans Rullgard
f0c07be649 celp_math: rename ff_log2 to ff_log2_q15
This name is more descriptive as the function returns a fixed-point
value with 15 fraction bits.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-10-20 12:28:45 +01:00
Michael Niedermayer
416d2f7a12 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  vc1: export some functions
  configure: use HOSTCC_C/O in check_host_cc
  configure: use AS_O setting in check_as
  configure: use LD_O setting in check_ld()
  Revert "dsputil: make {add/put/put_signed}_pixels_clamped() non-static."
  build: Restore dependency of acelp_filters.o on celp_math.o
  celp_math: Replace duplicate ff_dot_productf() by ff_scalarproduct_c()
  celp_math: Move ff_cos() to the only place it is used
  build: Use portable abstraction for linker/hostcc output file syntax
  configure: Fix shared library creation for OpenBSD
  vp56: Don't use DECLARE_ALIGN on a typedef name
  mss1: move code that will be reused by MSS2 decoder into separate file
  mss1: merge decode_intra() and decode_inter()
  avprobe: Get rid of ugly casts in the options table
  vf_hqdn3d: Remove a duplicate inline declaration

Conflicts:
	Makefile
	configure
	ffprobe.c
	libavcodec/Makefile
	libavcodec/amrnbdec.c
	libavcodec/amrwbdec.c
	libavcodec/celp_math.c
	libavcodec/celp_math.h
	libavcodec/dsputil.c
	libavcodec/lsp.c
	libavcodec/mss1.c
	libavcodec/ra288.c
	libavcodec/vc1dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-28 16:28:48 +02:00
Diego Biurrun
dafcbfe443 celp_math: Replace duplicate ff_dot_productf() by ff_scalarproduct_c() 2012-08-27 20:37:49 +02:00
Diego Biurrun
5549854335 celp_math: Move ff_cos() to the only place it is used 2012-08-27 20:37:48 +02:00
Nedeljko Babic
3827a86eac Optimization of AMR NB and WB decoders for MIPS
AMR NB and WB decoders are optimized for MIPS architecture.
Appropriate Makefiles are changed accordingly.

Cnfigure script is changed in order to support optimizations.
 Optimizations are enabled by default when compiling is done for
  mips architecture.
 Appropriate cflags are automatically set.
 Support for several mips CPUs is added in configure script.

New ffmpeg options are added for disabling optimizations.

The FFMPEG option --disable-mipsfpu disables MIPS floating point
 optimizations.
The FFMPEG option --disable-mips32r2 disables MIPS32R2
 optimizations.
The FFMPEG option --disable-mipsdspr1 disables MIPS DSP ASE R1
 optimizations.
The FFMPEG option --disable-mipsdspr2 disables MIPS DSP ASE R2
 optimizations.

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Reviewed-by: Vitor Sessak <vitor1001@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-06-11 21:12:39 +02:00
Michael Niedermayer
8bc7fe4daf Merge remote-tracking branch 'qatar/master'
* qatar/master:
  doxygen: misc consistency, spelling and wording fixes
  vcr1: drop unnecessary emms_c() calls without MMX code
  Replace all uses of av_close_input_file() with avformat_close_input().
  lavf: add avformat_close_input().
  lavf: deprecate av_close_input_stream().
  lavf doxy: add some basic demuxing documentation.
  lavf doxy: add some general lavf information.
  lavf doxy: add misc utility functions to a group.
  lavf doxy: add av_guess_codec/format to the encoding group.
  lavf doxy: add core functions to a doxy group.
  Add basic libavdevice documentation.
  lavc: convert error_recognition to err_recognition.
  avconv: update -map option help text
  x86: Require 7 registers for the cabac asm
  x86: bswap: remove test for bswap instruction
  bswap: make generic implementation more compiler-friendly
  h264: remove useless cast
  proresdec: fix decode_slice() prototype

Conflicts:
	configure
	doc/APIchanges
	ffprobe.c
	libavcodec/avcodec.h
	libavcodec/celp_math.h
	libavcodec/h264.c
	libavfilter/src_movie.c
	libavformat/anm.c
	libavformat/avformat.h
	libavformat/version.h
	libavutil/avstring.h
	libavutil/bswap.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-12-13 00:39:48 +01:00
Diego Biurrun
58c42af722 doxygen: misc consistency, spelling and wording fixes 2011-12-12 23:06:23 +01:00
Michael Niedermayer
78f08c06e6 ff_dot_product(): change return value to int64_t
Idea-by: Vitor
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-10-01 23:16:25 +02:00
Michael Niedermayer
11512367d3 celp_math: cleanup ff_dot_product()
based on code & idea by vitor

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-09-29 21:44:03 +02:00
Mohamed Naufal Basheer
a82c6238ae Add dot_product function for use by the G.723.1 decoder 2011-09-29 21:44:03 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Måns Rullgård
49bd8e4b84 Fix grammar errors in documentation
Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-30 15:38:06 +00:00
Aurelien Jacobs
275131628d Remove duplicated dot product code. Use dsputil's
scalarproduct instead. Patch by Aurelien Jacobs.

Originally committed as revision 16391 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-29 17:14:30 +00:00
Diego Biurrun
9686df2be5 Delete unnecessary 'extern' keywords.
Originally committed as revision 15990 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-03 15:23:30 +00:00
Kenan Gillet
0bc484ad51 Add ff_dot_productf() to celp_math.{c,h}
Part of the QCELP patch by Kenan Gillet, kenan.gillet gmail com

Originally committed as revision 15753 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-10-30 21:04:17 +00:00
Kenan Gillet
60c25a4beb Rename acelp_math.[ch] to celp_math.[ch] to prepare for QCELP decoder merge.
patch by Kenan Gillet, kenan.gillet gmail com

Originally committed as revision 15679 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-10-24 21:20:29 +00:00