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Added support for YUV2RGB[A]_NV21 and YUV2BGR[A]_NV21 conversion

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This commit is contained in:
Alexander Karsakov 2014-10-01 18:08:07 +04:00
parent 54b59c3cfb
commit 85b60ee3cb
3 changed files with 23 additions and 11 deletions
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18
modules/imgproc/src/color.cpp
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@ -4848,7 +4848,7 @@ static bool ocl_cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
bool ok = false;
UMat src = _src.getUMat(), dst;
Size sz = src.size(), dstSz = sz;
int scn = src.channels(), depth = src.depth(), bidx;
int scn = src.channels(), depth = src.depth(), bidx, uidx;
int dims = 2, stripeSize = 1;
ocl::Kernel k;
@ -4960,17 +4960,21 @@ static bool ocl_cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
opts + format("-D dcn=%d -D bidx=%d", dcn, bidx));
break;
}
case COLOR_YUV2RGB_NV12: case COLOR_YUV2BGR_NV12:
case COLOR_YUV2RGBA_NV12: case COLOR_YUV2BGRA_NV12:
case COLOR_YUV2RGB_NV12: case COLOR_YUV2BGR_NV12: case COLOR_YUV2RGB_NV21: case COLOR_YUV2BGR_NV21:
case COLOR_YUV2RGBA_NV12: case COLOR_YUV2BGRA_NV12: case COLOR_YUV2RGBA_NV21: case COLOR_YUV2BGRA_NV21:
{
CV_Assert( scn == 1 );
CV_Assert( sz.width % 2 == 0 && sz.height % 3 == 0 && depth == CV_8U );
dcn = code == COLOR_YUV2BGRA_NV12 || code == COLOR_YUV2RGBA_NV12 ? 4 : 3;
bidx = code == COLOR_YUV2BGRA_NV12 || code == COLOR_YUV2BGR_NV12 ? 0 : 2;
dcn = code == COLOR_YUV2BGRA_NV12 || code == COLOR_YUV2RGBA_NV12 ||
code == COLOR_YUV2BGRA_NV21 || code == COLOR_YUV2RGBA_NV21 ? 4 : 3;
bidx = code == COLOR_YUV2BGRA_NV12 || code == COLOR_YUV2BGR_NV12 ||
code == COLOR_YUV2BGRA_NV21 || code == COLOR_YUV2BGR_NV21 ? 0 : 2;
uidx = code == COLOR_YUV2RGBA_NV21 || code == COLOR_YUV2RGB_NV21 ||
code == COLOR_YUV2BGRA_NV21 || code == COLOR_YUV2BGR_NV21 ? 1 : 0;
dstSz = Size(sz.width, sz.height * 2 / 3);
k.create("YUV2RGB_NV12", ocl::imgproc::cvtcolor_oclsrc,
opts + format("-D dcn=%d -D bidx=%d", dcn, bidx));
k.create("YUV2RGB_NVx", ocl::imgproc::cvtcolor_oclsrc,
opts + format("-D dcn=%d -D bidx=%d -D uidx=%d", dcn, bidx, uidx));
break;
}
case COLOR_BGR2YCrCb:

10
modules/imgproc/src/opencl/cvtcolor.cl
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@ -111,6 +111,10 @@ enum
#define B_COMP w
#endif
#ifndef uidx
#define uidx 0
#endif
#define __CAT(x, y) x##y
#define CAT(x, y) __CAT(x, y)
@ -297,7 +301,7 @@ __constant int ITUR_BT_601_CVG = 852492;
__constant int ITUR_BT_601_CVR = 1673527;
__constant int ITUR_BT_601_SHIFT = 20;
__kernel void YUV2RGB_NV12(__global const uchar* srcptr, int src_step, int src_offset,
__kernel void YUV2RGB_NVx(__global const uchar* srcptr, int src_step, int src_offset,
__global uchar* dstptr, int dst_step, int dt_offset,
int rows, int cols)
{
@ -321,8 +325,8 @@ __kernel void YUV2RGB_NV12(__global const uchar* srcptr, int src_step, int src_o
int Y3 = ysrc[src_step];
int Y4 = ysrc[src_step + 1];
int U = usrc[0] - 128;
int V = usrc[1] - 128;
int U = usrc[uidx] - 128;
int V = usrc[1 - uidx] - 128;
int ruv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CVR * V;
int guv = (1 << (ITUR_BT_601_SHIFT - 1)) - ITUR_BT_601_CVG * V - ITUR_BT_601_CUG * U;

6
modules/imgproc/test/ocl/test_color.cpp
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@ -320,7 +320,7 @@ OCL_TEST_P(CvtColor8u32f, Luv2RGBA) { performTest(3, 4, CVTCODE(Luv2RGB), depth
OCL_TEST_P(CvtColor8u32f, Luv2LBGRA) { performTest(3, 4, CVTCODE(Luv2LBGR), depth == CV_8U ? 1 : 1e-5); }
OCL_TEST_P(CvtColor8u32f, Luv2LRGBA) { performTest(3, 4, CVTCODE(Luv2LRGB), depth == CV_8U ? 1 : 1e-5); }
// YUV -> RGBA_NV12
// YUV -> RGBA_NVx
struct CvtColor_YUV420 :
public CvtColor
@ -348,6 +348,10 @@ OCL_TEST_P(CvtColor_YUV420, YUV2RGBA_NV12) { performTest(1, 4, COLOR_YUV2RGBA_NV
OCL_TEST_P(CvtColor_YUV420, YUV2BGRA_NV12) { performTest(1, 4, COLOR_YUV2BGRA_NV12); }
OCL_TEST_P(CvtColor_YUV420, YUV2RGB_NV12) { performTest(1, 3, COLOR_YUV2RGB_NV12); }
OCL_TEST_P(CvtColor_YUV420, YUV2BGR_NV12) { performTest(1, 3, COLOR_YUV2BGR_NV12); }
OCL_TEST_P(CvtColor_YUV420, YUV2RGBA_NV21) { performTest(1, 4, COLOR_YUV2RGBA_NV21); }
OCL_TEST_P(CvtColor_YUV420, YUV2BGRA_NV21) { performTest(1, 4, COLOR_YUV2BGRA_NV21); }
OCL_TEST_P(CvtColor_YUV420, YUV2RGB_NV21) { performTest(1, 3, COLOR_YUV2RGB_NV21); }
OCL_TEST_P(CvtColor_YUV420, YUV2BGR_NV21) { performTest(1, 3, COLOR_YUV2BGR_NV21); }
OCL_INSTANTIATE_TEST_CASE_P(ImgProc, CvtColor8u,