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submodule
opencv
Commits
dbaf125f
Commit
dbaf125f
authored
Dec 28, 2013
by
Andrey Pavlenko
Committed by
OpenCV Buildbot
Dec 28, 2013
Browse files
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Merge pull request #2075 from ilya-lavrenov:tapi_mixchannels
parents
0913dd7f
73c96cbd
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Showing
4 changed files
with
337 additions
and
20 deletions
+337
-20
convert.cpp
modules/core/src/convert.cpp
+111
-6
mixchannels.cl
modules/core/src/opencl/mixchannels.cl
+64
-0
test_split_merge.cpp
modules/core/test/ocl/test_split_merge.cpp
+154
-12
histogram.cpp
modules/imgproc/src/histogram.cpp
+8
-2
No files found.
modules/core/src/convert.cpp
View file @
dbaf125f
...
...
@@ -612,16 +612,111 @@ void cv::mixChannels( const Mat* src, size_t nsrcs, Mat* dst, size_t ndsts, cons
}
}
namespace
cv
{
static
void
getUMatIndex
(
const
std
::
vector
<
UMat
>
&
um
,
int
cn
,
int
&
idx
,
int
&
cnidx
)
{
int
totalChannels
=
0
;
for
(
size_t
i
=
0
,
size
=
um
.
size
();
i
<
size
;
++
i
)
{
int
ccn
=
um
[
i
].
channels
();
totalChannels
+=
ccn
;
if
(
totalChannels
==
cn
)
{
idx
=
(
int
)(
i
+
1
);
cnidx
=
0
;
return
;
}
else
if
(
totalChannels
>
cn
)
{
idx
=
(
int
)
i
;
cnidx
=
i
==
0
?
cn
:
(
cn
-
totalChannels
+
ccn
);
return
;
}
}
idx
=
cnidx
=
-
1
;
}
static
bool
ocl_mixChannels
(
InputArrayOfArrays
_src
,
InputOutputArrayOfArrays
_dst
,
const
int
*
fromTo
,
size_t
npairs
)
{
const
std
::
vector
<
UMat
>
&
src
=
*
(
const
std
::
vector
<
UMat
>
*
)
_src
.
getObj
();
std
::
vector
<
UMat
>
&
dst
=
*
(
std
::
vector
<
UMat
>
*
)
_dst
.
getObj
();
size_t
nsrc
=
src
.
size
(),
ndst
=
dst
.
size
();
CV_Assert
(
nsrc
>
0
&&
ndst
>
0
);
Size
size
=
src
[
0
].
size
();
int
depth
=
src
[
0
].
depth
(),
esz
=
CV_ELEM_SIZE
(
depth
);
for
(
size_t
i
=
1
,
ssize
=
src
.
size
();
i
<
ssize
;
++
i
)
CV_Assert
(
src
[
i
].
size
()
==
size
&&
src
[
i
].
depth
()
==
depth
);
for
(
size_t
i
=
0
,
dsize
=
dst
.
size
();
i
<
dsize
;
++
i
)
CV_Assert
(
dst
[
i
].
size
()
==
size
&&
dst
[
i
].
depth
()
==
depth
);
String
declsrc
,
decldst
,
declproc
,
declcn
;
std
::
vector
<
UMat
>
srcargs
(
npairs
),
dstargs
(
npairs
);
for
(
size_t
i
=
0
;
i
<
npairs
;
++
i
)
{
int
scn
=
fromTo
[
i
<<
1
],
dcn
=
fromTo
[(
i
<<
1
)
+
1
];
int
src_idx
,
src_cnidx
,
dst_idx
,
dst_cnidx
;
getUMatIndex
(
src
,
scn
,
src_idx
,
src_cnidx
);
getUMatIndex
(
dst
,
dcn
,
dst_idx
,
dst_cnidx
);
CV_Assert
(
dst_idx
>=
0
&&
src_idx
>=
0
);
srcargs
[
i
]
=
src
[
src_idx
];
srcargs
[
i
].
offset
+=
src_cnidx
*
esz
;
dstargs
[
i
]
=
dst
[
dst_idx
];
dstargs
[
i
].
offset
+=
dst_cnidx
*
esz
;
declsrc
+=
format
(
"DECLARE_INPUT_MAT(%d)"
,
i
);
decldst
+=
format
(
"DECLARE_OUTPUT_MAT(%d)"
,
i
);
declproc
+=
format
(
"PROCESS_ELEM(%d)"
,
i
);
declcn
+=
format
(
" -D scn%d=%d -D dcn%d=%d"
,
i
,
src
[
src_idx
].
channels
(),
i
,
dst
[
dst_idx
].
channels
());
}
ocl
::
Kernel
k
(
"mixChannels"
,
ocl
::
core
::
mixchannels_oclsrc
,
format
(
"-D T=%s -D DECLARE_INPUT_MATS=%s -D DECLARE_OUTPUT_MATS=%s"
" -D PROCESS_ELEMS=%s%s"
,
ocl
::
memopTypeToStr
(
depth
),
declsrc
.
c_str
(),
decldst
.
c_str
(),
declproc
.
c_str
(),
declcn
.
c_str
()));
if
(
k
.
empty
())
return
false
;
int
argindex
=
0
;
for
(
size_t
i
=
0
;
i
<
npairs
;
++
i
)
argindex
=
k
.
set
(
argindex
,
ocl
::
KernelArg
::
ReadOnlyNoSize
(
srcargs
[
i
]));
for
(
size_t
i
=
0
;
i
<
npairs
;
++
i
)
argindex
=
k
.
set
(
argindex
,
ocl
::
KernelArg
::
ReadOnlyNoSize
(
dstargs
[
i
]));
k
.
set
(
k
.
set
(
argindex
,
size
.
height
),
size
.
width
);
size_t
globalsize
[
2
]
=
{
size
.
width
,
size
.
height
};
return
k
.
run
(
2
,
globalsize
,
NULL
,
false
);
}
}
void
cv
::
mixChannels
(
InputArrayOfArrays
src
,
InputOutputArrayOfArrays
dst
,
const
int
*
fromTo
,
size_t
npairs
)
{
if
(
npairs
==
0
)
if
(
npairs
==
0
||
fromTo
==
NULL
)
return
;
if
(
ocl
::
useOpenCL
()
&&
src
.
isUMatVector
()
&&
dst
.
isUMatVector
()
&&
ocl_mixChannels
(
src
,
dst
,
fromTo
,
npairs
))
return
;
bool
src_is_mat
=
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_MAT
&&
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
;
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
&&
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_UMAT
;
bool
dst_is_mat
=
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_MAT
&&
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
;
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
&&
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_UMAT
;
int
i
;
int
nsrc
=
src_is_mat
?
1
:
(
int
)
src
.
total
();
int
ndst
=
dst_is_mat
?
1
:
(
int
)
dst
.
total
();
...
...
@@ -639,12 +734,22 @@ void cv::mixChannels(InputArrayOfArrays src, InputOutputArrayOfArrays dst,
void
cv
::
mixChannels
(
InputArrayOfArrays
src
,
InputOutputArrayOfArrays
dst
,
const
std
::
vector
<
int
>&
fromTo
)
{
if
(
fromTo
.
empty
())
if
(
fromTo
.
empty
())
return
;
if
(
ocl
::
useOpenCL
()
&&
src
.
isUMatVector
()
&&
dst
.
isUMatVector
()
/*&&
ocl_mixChannels(src, dst, &fromTo[0], fromTo.size()>>1)*/
)
{
CV_Assert
(
ocl_mixChannels
(
src
,
dst
,
&
fromTo
[
0
],
fromTo
.
size
()
>>
1
));
return
;
}
bool
src_is_mat
=
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_MAT
&&
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
;
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
&&
src
.
kind
()
!=
_InputArray
::
STD_VECTOR_UMAT
;
bool
dst_is_mat
=
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_MAT
&&
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
;
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_VECTOR
&&
dst
.
kind
()
!=
_InputArray
::
STD_VECTOR_UMAT
;
int
i
;
int
nsrc
=
src_is_mat
?
1
:
(
int
)
src
.
total
();
int
ndst
=
dst_is_mat
?
1
:
(
int
)
dst
.
total
();
...
...
modules/core/src/opencl/mixchannels.cl
0 → 100644
View file @
dbaf125f
/*M///////////////////////////////////////////////////////////////////////////////////////
//
//
IMPORTANT:
READ
BEFORE
DOWNLOADING,
COPYING,
INSTALLING
OR
USING.
//
//
By
downloading,
copying,
installing
or
using
the
software
you
agree
to
this
license.
//
If
you
do
not
agree
to
this
license,
do
not
download,
install,
//
copy
or
use
the
software.
//
//
//
License
Agreement
//
For
Open
Source
Computer
Vision
Library
//
//
Copyright
(
C
)
2010-2012,
Institute
Of
Software
Chinese
Academy
Of
Science,
all
rights
reserved.
//
Copyright
(
C
)
2010-2012,
Advanced
Micro
Devices,
Inc.,
all
rights
reserved.
//
Copyright
(
C
)
2013
,
OpenCV
Foundation,
all
rights
reserved.
//
Third
party
copyrights
are
property
of
their
respective
owners.
//
//
Redistribution
and
use
in
source
and
binary
forms,
with
or
without
modification,
//
are
permitted
provided
that
the
following
conditions
are
met:
//
//
*
Redistribution
's
of
source
code
must
retain
the
above
copyright
notice,
//
this
list
of
conditions
and
the
following
disclaimer.
//
//
*
Redistribution
's
in
binary
form
must
reproduce
the
above
copyright
notice,
//
this
list
of
conditions
and
the
following
disclaimer
in
the
documentation
//
and/or
other
materials
provided
with
the
distribution.
//
//
*
The
name
of
the
copyright
holders
may
not
be
used
to
endorse
or
promote
products
//
derived
from
this
software
without
specific
prior
written
permission.
//
//
This
software
is
provided
by
the
copyright
holders
and
contributors
as
is
and
//
any
express
or
implied
warranties,
including,
but
not
limited
to,
the
implied
//
warranties
of
merchantability
and
fitness
for
a
particular
purpose
are
disclaimed.
//
In
no
event
shall
the
copyright
holders
or
contributors
be
liable
for
any
direct,
//
indirect,
incidental,
special,
exemplary,
or
consequential
damages
//
(
including,
but
not
limited
to,
procurement
of
substitute
goods
or
services
;
//
loss
of
use,
data,
or
profits
; or business interruption) however caused
//
and
on
any
theory
of
liability,
whether
in
contract,
strict
liability,
//
or
tort
(
including
negligence
or
otherwise
)
arising
in
any
way
out
of
//
the
use
of
this
software,
even
if
advised
of
the
possibility
of
such
damage.
//
//M*/
#
define
DECLARE_INPUT_MAT
(
i
)
\
__global
const
uchar
*
src##i##ptr,
int
src##i##_step,
int
src##i##_offset,
#
define
DECLARE_OUTPUT_MAT
(
i
)
\
__global
const
uchar
*
dst##i##ptr,
int
dst##i##_step,
int
dst##i##_offset,
#
define
PROCESS_ELEM
(
i
)
\
int
src##i##_index
=
mad24
(
src##i##_step,
y,
x
*
(
int
)
sizeof
(
T
)
*
scn##i
+
src##i##_offset
)
; \
__global
const
T
*
src##i
=
(
__global
const
T
*
)(
src##i##ptr
+
src##i##_index
)
; \
int
dst##i##_index
=
mad24
(
dst##i##_step,
y,
x
*
(
int
)
sizeof
(
T
)
*
dcn##i
+
dst##i##_offset
)
; \
__global
T
*
dst##i
=
(
__global
T
*
)(
dst##i##ptr
+
dst##i##_index
)
; \
dst##i[0]
=
src##i[0]
;
__kernel
void
mixChannels
(
DECLARE_INPUT_MATS
DECLARE_OUTPUT_MATS
int
rows,
int
cols
)
{
int
x
=
get_global_id
(
0
)
;
int
y
=
get_global_id
(
1
)
;
if
(
x
<
cols
&&
y
<
rows
)
{
PROCESS_ELEMS
}
}
modules/core/test/ocl/test_split_merge.cpp
View file @
dbaf125f
...
...
@@ -52,7 +52,9 @@
namespace
cvtest
{
namespace
ocl
{
PARAM_TEST_CASE
(
MergeTestBase
,
MatDepth
,
Channels
,
bool
)
//////////////////////////////////////// Merge ///////////////////////////////////////////////
PARAM_TEST_CASE
(
Merge
,
MatDepth
,
Channels
,
bool
)
{
int
depth
,
cn
;
bool
use_roi
;
...
...
@@ -75,7 +77,7 @@ PARAM_TEST_CASE(MergeTestBase, MatDepth, Channels, bool)
CV_Assert
(
cn
>=
1
&&
cn
<=
4
);
}
void
random_roi
()
void
generateTestData
()
{
Size
roiSize
=
randomSize
(
1
,
MAX_VALUE
);
...
...
@@ -117,13 +119,11 @@ PARAM_TEST_CASE(MergeTestBase, MatDepth, Channels, bool)
}
};
typedef
MergeTestBase
Merge
;
OCL_TEST_P
(
Merge
,
Accuracy
)
{
for
(
int
j
=
0
;
j
<
test_loop_times
;
j
++
)
{
random_roi
();
generateTestData
();
OCL_OFF
(
cv
::
merge
(
src_roi
,
dst_roi
));
OCL_ON
(
cv
::
merge
(
usrc_roi
,
udst_roi
));
...
...
@@ -132,7 +132,9 @@ OCL_TEST_P(Merge, Accuracy)
}
}
PARAM_TEST_CASE
(
SplitTestBase
,
MatType
,
Channels
,
bool
)
//////////////////////////////////////// Split ///////////////////////////////////////////////
PARAM_TEST_CASE
(
Split
,
MatType
,
Channels
,
bool
)
{
int
depth
,
cn
;
bool
use_roi
;
...
...
@@ -155,7 +157,7 @@ PARAM_TEST_CASE(SplitTestBase, MatType, Channels, bool)
CV_Assert
(
cn
>=
1
&&
cn
<=
4
);
}
void
random_roi
()
void
generateTestData
()
{
Size
roiSize
=
randomSize
(
1
,
MAX_VALUE
);
Border
srcBorder
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
...
...
@@ -195,13 +197,11 @@ PARAM_TEST_CASE(SplitTestBase, MatType, Channels, bool)
}
};
typedef
SplitTestBase
Split
;
OCL_TEST_P
(
Split
,
DISABLED_Accuracy
)
{
for
(
int
j
=
0
;
j
<
test_loop_times
;
j
++
)
{
random_roi
();
generateTestData
();
OCL_OFF
(
cv
::
split
(
src_roi
,
dst_roi
));
OCL_ON
(
cv
::
split
(
usrc_roi
,
udst_roi
));
...
...
@@ -214,8 +214,150 @@ OCL_TEST_P(Split, DISABLED_Accuracy)
}
}
OCL_INSTANTIATE_TEST_CASE_P
(
SplitMerge
,
Merge
,
Combine
(
OCL_ALL_DEPTHS
,
OCL_ALL_CHANNELS
,
Bool
()));
OCL_INSTANTIATE_TEST_CASE_P
(
SplitMerge
,
Split
,
Combine
(
OCL_ALL_DEPTHS
,
OCL_ALL_CHANNELS
,
Bool
()));
//////////////////////////////////////// MixChannels ///////////////////////////////////////////////
PARAM_TEST_CASE
(
MixChannels
,
MatType
,
bool
)
{
int
depth
;
bool
use_roi
;
TEST_DECLARE_INPUT_PARAMETER
(
src1
)
TEST_DECLARE_INPUT_PARAMETER
(
src2
)
TEST_DECLARE_INPUT_PARAMETER
(
src3
)
TEST_DECLARE_INPUT_PARAMETER
(
src4
)
TEST_DECLARE_OUTPUT_PARAMETER
(
dst1
)
TEST_DECLARE_OUTPUT_PARAMETER
(
dst2
)
TEST_DECLARE_OUTPUT_PARAMETER
(
dst3
)
TEST_DECLARE_OUTPUT_PARAMETER
(
dst4
)
std
::
vector
<
Mat
>
src_roi
,
dst_roi
,
dst
;
std
::
vector
<
UMat
>
usrc_roi
,
udst_roi
,
udst
;
std
::
vector
<
int
>
fromTo
;
virtual
void
SetUp
()
{
depth
=
GET_PARAM
(
0
);
use_roi
=
GET_PARAM
(
1
);
}
// generate number of channels and create type
int
type
()
{
int
cn
=
randomInt
(
1
,
5
);
return
CV_MAKE_TYPE
(
depth
,
cn
);
}
void
generateTestData
()
{
src_roi
.
clear
();
dst_roi
.
clear
();
dst
.
clear
();
usrc_roi
.
clear
();
udst_roi
.
clear
();
udst
.
clear
();
fromTo
.
clear
();
Size
roiSize
=
randomSize
(
1
,
MAX_VALUE
);
{
Border
src1Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
src1
,
src1_roi
,
roiSize
,
src1Border
,
type
(),
2
,
11
);
Border
src2Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
src2
,
src2_roi
,
roiSize
,
src2Border
,
type
(),
-
1540
,
1740
);
Border
src3Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
src3
,
src3_roi
,
roiSize
,
src3Border
,
type
(),
-
1540
,
1740
);
Border
src4Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
src4
,
src4_roi
,
roiSize
,
src4Border
,
type
(),
-
1540
,
1740
);
}
{
Border
dst1Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
dst1
,
dst1_roi
,
roiSize
,
dst1Border
,
type
(),
2
,
11
);
Border
dst2Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
dst2
,
dst2_roi
,
roiSize
,
dst2Border
,
type
(),
-
1540
,
1740
);
Border
dst3Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
dst3
,
dst3_roi
,
roiSize
,
dst3Border
,
type
(),
-
1540
,
1740
);
Border
dst4Border
=
randomBorder
(
0
,
use_roi
?
MAX_VALUE
:
0
);
randomSubMat
(
dst4
,
dst4_roi
,
roiSize
,
dst4Border
,
type
(),
-
1540
,
1740
);
}
UMAT_UPLOAD_INPUT_PARAMETER
(
src1
)
UMAT_UPLOAD_INPUT_PARAMETER
(
src2
)
UMAT_UPLOAD_INPUT_PARAMETER
(
src3
)
UMAT_UPLOAD_INPUT_PARAMETER
(
src4
)
UMAT_UPLOAD_OUTPUT_PARAMETER
(
dst1
)
UMAT_UPLOAD_OUTPUT_PARAMETER
(
dst2
)
UMAT_UPLOAD_OUTPUT_PARAMETER
(
dst3
)
UMAT_UPLOAD_OUTPUT_PARAMETER
(
dst4
)
int
nsrc
=
randomInt
(
1
,
5
),
ndst
=
randomInt
(
1
,
5
);
src_roi
.
push_back
(
src1_roi
),
usrc_roi
.
push_back
(
usrc1_roi
);
if
(
nsrc
>=
2
)
src_roi
.
push_back
(
src2_roi
),
usrc_roi
.
push_back
(
usrc2_roi
);
if
(
nsrc
>=
3
)
src_roi
.
push_back
(
src3_roi
),
usrc_roi
.
push_back
(
usrc3_roi
);
if
(
nsrc
>=
4
)
src_roi
.
push_back
(
src4_roi
),
usrc_roi
.
push_back
(
usrc4_roi
);
dst_roi
.
push_back
(
dst1_roi
),
udst_roi
.
push_back
(
udst1_roi
),
dst
.
push_back
(
dst1
),
udst
.
push_back
(
udst1
);
if
(
ndst
>=
2
)
dst_roi
.
push_back
(
dst2_roi
),
udst_roi
.
push_back
(
udst2_roi
),
dst
.
push_back
(
dst2
),
udst
.
push_back
(
udst2
);
if
(
ndst
>=
3
)
dst_roi
.
push_back
(
dst3_roi
),
udst_roi
.
push_back
(
udst3_roi
),
dst
.
push_back
(
dst3
),
udst
.
push_back
(
udst3
);
if
(
ndst
>=
4
)
dst_roi
.
push_back
(
dst4_roi
),
udst_roi
.
push_back
(
udst4_roi
),
dst
.
push_back
(
dst4
),
udst
.
push_back
(
udst4
);
int
scntotal
=
0
,
dcntotal
=
0
;
for
(
int
i
=
0
;
i
<
nsrc
;
++
i
)
scntotal
+=
src_roi
[
i
].
channels
();
for
(
int
i
=
0
;
i
<
ndst
;
++
i
)
dcntotal
+=
dst_roi
[
i
].
channels
();
int
npairs
=
randomInt
(
1
,
std
::
min
(
scntotal
,
dcntotal
)
+
1
);
fromTo
.
resize
(
npairs
<<
1
);
for
(
int
i
=
0
;
i
<
npairs
;
++
i
)
{
fromTo
[
i
<<
1
]
=
randomInt
(
0
,
scntotal
);
fromTo
[(
i
<<
1
)
+
1
]
=
randomInt
(
0
,
dcntotal
);
}
}
};
OCL_TEST_P
(
MixChannels
,
Accuracy
)
{
for
(
int
j
=
0
;
j
<
test_loop_times
+
10
;
j
++
)
{
generateTestData
();
OCL_OFF
(
cv
::
mixChannels
(
src_roi
,
dst_roi
,
fromTo
));
OCL_ON
(
cv
::
mixChannels
(
usrc_roi
,
udst_roi
,
fromTo
));
for
(
size_t
i
=
0
,
size
=
dst_roi
.
size
();
i
<
size
;
++
i
)
{
EXPECT_MAT_NEAR
(
dst
[
i
],
udst
[
i
],
0.0
);
EXPECT_MAT_NEAR
(
dst_roi
[
i
],
udst_roi
[
i
],
0.0
);
}
}
}
//////////////////////////////////////// Instantiation ///////////////////////////////////////////////
OCL_INSTANTIATE_TEST_CASE_P
(
Channels
,
Merge
,
Combine
(
OCL_ALL_DEPTHS
,
OCL_ALL_CHANNELS
,
Bool
()));
OCL_INSTANTIATE_TEST_CASE_P
(
Channels
,
Split
,
Combine
(
OCL_ALL_DEPTHS
,
OCL_ALL_CHANNELS
,
Bool
()));
OCL_INSTANTIATE_TEST_CASE_P
(
Channels
,
MixChannels
,
Combine
(
OCL_ALL_DEPTHS
,
Bool
()));
}
}
// namespace cvtest::ocl
...
...
modules/imgproc/src/histogram.cpp
View file @
dbaf125f
...
...
@@ -1940,10 +1940,16 @@ static void getUMatIndex(const std::vector<UMat> & um, int cn, int & idx, int &
int
ccn
=
um
[
i
].
channels
();
totalChannels
+=
ccn
;
if
(
totalChannels
>=
cn
)
if
(
totalChannels
==
cn
)
{
idx
=
(
int
)(
i
+
1
);
cnidx
=
0
;
return
;
}
else
if
(
totalChannels
>
cn
)
{
idx
=
(
int
)
i
;
cnidx
=
i
==
0
?
cn
:
cn
%
(
totalChannels
-
ccn
);
cnidx
=
i
==
0
?
cn
:
(
cn
-
totalChannels
+
ccn
);
return
;
}
}
...
...
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