Displaying 14 results from an estimated 14 matches for "dequant".
2008 Nov 20
4
Dequantizing
I have some data measured with a coarsely-quantized clock. Let's say
the real data are
q<- sort(rexp(100,.5))
The quantized form is floor(q), so a simple quantile plot of one
against the other can be calculated using:
plot(q,type="l"); points(floor(q),col="red")
which of course shows the characteristic stair-step. I would like to
smooth the quantized
2008 Apr 10
2
Delay occurred when the makefile change
...$(enc_arch_dir)/dsp_mmx.c \
$(enc_arch_dir)/dsp_mmxext.c \
$(enc_arch_dir)/recon_mmx.c \
$(enc_arch_dir)/idct_mmx.c \
$(enc_arch_dir)/fdct_mmx.c
endif
endif
endif
decoder_sources = \
dec/apiwrapper.c \
dec/decapiwrapper.c \
dec/decinfo.c \
dec/decode.c \
dec/dequant.c \
dec/fragment.c \
dec/huffdec.c \
dec/idct.c \
dec/info.c \
dec/internal.c \
dec/quant.c \
dec/state.c
if CPU_x86_64
decoder_x86_sources = \
dec/x86/mmxidct.c \
dec/x86/mmxfrag.c \
dec/x86/mmxstate.c \
dec/x86/x86state.c
else
if CPU_x86_32
decoder_x86...
2008 Apr 23
1
Theora got extreamly slow (Makefile.am was changed)
...$(enc_arch_dir)/dsp_mmx.c \
$(enc_arch_dir)/dsp_mmxext.c \
$(enc_arch_dir)/recon_mmx.c \
$(enc_arch_dir)/idct_mmx.c \
$(enc_arch_dir)/fdct_mmx.c
endif
endif
endif
decoder_sources = \
dec/apiwrapper.c \
dec/decapiwrapper.c \
dec/decinfo.c \
dec/decode.c \
dec/dequant.c \
dec/fragment.c \
dec/huffdec.c \
dec/idct.c \
dec/info.c \
dec/internal.c \
dec/quant.c \
dec/state.c
if CPU_x86_64
decoder_x86_sources = \
dec/x86/mmxidct.c \
dec/x86/mmxfrag.c \
dec/x86/mmxstate.c \
dec/x86/x86state.c
else
if CPU_x86_32
decoder_x86...
1999 Nov 19
2
Impulses
...DCT ... (like above)
\
-> -> sum impulse factors -> iDWT -> LPC -> LSP -> quant
i.e. use a wavelet transform to seperate out impulsey signals and
compress them in the time domain.
The decoder complexity really isn't increased much (just one more
dequant/LPC and a sum). I think there are optimized versions of the haar
DWT that go really fast too..
--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
2006 May 30
2
16 bits, cast on idct function
Hi all,
Just a stupid question
The IDctSlow function on file idct.c has this line :
ip[0] = (ogg_int16_t)((_Gd + _Cd ) >> 0);
The ip[0] , _Gd and _Cd are of type ogg_int32_t
My question is:
The result of (_Gd + _Cd) can be a number with more than 16 bits ?
(yes, it can be because they are int32, but the algorithm could
guarantee something about that... I dont know...)
If
2011 Apr 22
2
Can't compile libtheora vs2010
...ectory
1> huffdec.c (TaskId:16)
1>c1 : fatal error C1083: Cannot open source file: '..\lib\dec\huffdec.c':
No such file or directory
1> fragment.c (TaskId:16)
1>c1 : fatal error C1083: Cannot open source file: '..\lib\dec\fragment.c':
No such file or directory
1> dequant.c (TaskId:16)
1>c1 : fatal error C1083: Cannot open source file: '..\lib\dec\dequant.c':
No such file or directory
1> decode.c (TaskId:16)
1>c1 : fatal error C1083: Cannot open source file: '..\lib\dec\decode.c': No
such file or directory
1> decinfo.c (TaskId:16)
1&...
2008 Apr 21
1
Compile libtheora 1.0beta3 with VS2005
...: No
such file or directory c:\Documents and
Settings\Manoj\Desktop\libtheora-1.0beta3\include\theora\theoradec.h 23
Error 10 fatal error C1083: Cannot open include file: 'ogg/ogg.h': No
such file or directory c:\Documents and
Settings\Manoj\Desktop\libtheora-1.0beta3\lib\dec\dequant.c 20
Error 11 fatal error C1083: Cannot open include file: 'ogg/ogg.h': No
such file or directory c:\Documents and
Settings\Manoj\Desktop\libtheora-1.0beta3\include\theora\codec.h 64
Error 12 fatal error C1083: Cannot open include file: 'ogg/ogg.h': No
such file...
2007 Oct 09
1
VC6 Patch
...lib\dec\decapiwrapper.c
# End Source File
# Begin Source File
-SOURCE=..\lib\frarray.c
+SOURCE=..\lib\dec\decinfo.c
# End Source File
# Begin Source File
-SOURCE=..\lib\frinit.c
+SOURCE=..\lib\dec\decode.c
# End Source File
# Begin Source File
-SOURCE=..\lib\huffman.c
+SOURCE=..\lib\dec\dequant.c
# End Source File
# Begin Source File
-SOURCE=..\lib\idct.c
+SOURCE=..\lib\enc\dsp.c
# End Source File
# Begin Source File
-SOURCE=..\lib\mcomp.c
+SOURCE=..\lib\enc\x86_32_vs\dsp_mmx.c
# End Source File
# Begin Source File
-SOURCE=..\lib\misc_common.c
+SOURCE=..\lib\enc\encode.c
# En...
2014 May 05
1
Application crushes
...CAL_C_INCLUDES := $(LOCAL_PATH)/include \
$(LOCAL_PATH)/src \
$(LOCAL_PATH)/src/dec
LOCAL_SRC_FILES := src/dec/apiwrapper.c \
src/dec/internal.c \
src/dec/info.c \
src/dec/decapiwrapper.c \
src/dec/decinfo.c \
src/dec/decode.c \
src/dec/state.c \
src/dec/dequant.c \
src/dec/huffdec.c \
src/dec/quant.c \
src/dec/bitwise2ARM.s \
src/dec/bitwiseARM.s \
src/dec/decodeARM.s \
src/dec/stateARM.s \
src/dec/fragARM.s \
src/dec/idctARM.s\
src/dec/ppARM.s
LOCAL_ARM_NEON := true
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_C_INCLUDE...
2011 Apr 05
0
quantize after fdct, _dequant table, and idct
...125 123 113
--- _dct:
2767 1165 -439 154 15 24 -87 -53
-1254 1080 -245 0 125 -15 -101 -67
-512 260 212 -207 200 -49 -80 -55
-111 -111 300 -166 125 -17 -70 -45
-54 -69 127 18 -31 60 -82 -30
-50 -30 40 83 -74 72 -68 -35
-31 -33 37 48 -40 40 -28 -44
-21 -13 29 12 1 -3 11 -44
--- _dequant:
24 32 32 36 32 32 40 36
36 36 40 40 40 44 48 56
48 48 48 48 48 56 56 56
52 56 60 56 60 60 60 56
60 56 60 64 64 64 60 60
64 60 56 60 64 64 64 64
64 64 64 64 64 60 64 64
64 64 64 64 64 64 64 64
--- _qdct:
115 36 -39 -14 34 -14 4 -7
7 -3 -1 -3 5 0 0 0
3 -4 6 -1 -1 -1 -1 2
-3 4 0 -2 -1 -2...
2013 Jun 19
0
NHW Image codec - lower quality settings
Hello,
I have improved a little the NHW codec.I have improved the dequantization
in the wavelet HH band, and little improved the -l2 (and lower) quality
setting.I have also added a -l3 lower quality setting (-15Ko, exp), I have
increased the quantization for this other setting, and I start to remove
higher wavelet coefficients, but this is not optimal... The artifacts st...
2008 Feb 28
1
Multi-thread Theora Decoder
Hi all,
Does Theora Community have an interest in a multi-thread decoder implementation?
I'm starting to work with multi-thread and I thought that Theora
Decoder is a good choice for me, because I had been working with it in
a FPGA implementation and I have experience with the library.
I'm thinking in working with LoopFilter at first. Do you think I could
start with it or there is a
2018 Dec 16
0
Build from Source on MSVC 2017 cl and MSYS2 32 bit
...ompiler Version 19.16.27024.1 for x86
Copyright (C) Microsoft Corporation. All rights reserved.
cl : Command line warning D9035 : option 'O' has been deprecated and will
be removed in a future release
cl : Command line warning D9002 : ignoring unknown option '-g'
decode.c
CC dequant.lo
CC fragment.lo
CC huffdec.lo
CC idct.lo
CC info.lo
Microsoft (R) C/C++ Optimizing Compiler Version 19.16.27024.1 for x86
Copyright (C) Microsoft Corporation. All rights reserved.
cl : Command line warning D9035 : option 'O' has been deprecated and will
be remove...
2005 Jul 20
1
MMX IDCT for theora-exp
...5 8.9e-04 2 5.2e-04 dump oc_clc_mode_unpack
5 8.9e-04 5 0.0013 dump oc_state_init
3 5.3e-04 0 0 dump oc_set_chroma_mvs00
2 3.5e-04 0 0 dump oc_dequant_tables_init
2 3.5e-04 2 5.2e-04 ld-2.3.2.so (no symbols)
1 1.8e-04 0 0 dump oc_huff_tree_mindepth
1 1.8e-04 0 0 dump oc_huff_tree_occupancy
As you can see loopfilter needs some work. Af...