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libyuv: Adding I420rotate. Updating gyp file to include rotation.

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Review URL: http://webrtc-codereview.appspot.com/230002

git-svn-id: http://libyuv.googlecode.com/svn/trunk@30 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
mikhal@webrtc.org 2011-10-14 01:37:12 +00:00
parent 8b071f6dc2
commit ec9d86cab3
3 changed files with 85 additions and 2 deletions
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15
include/general.h
View File

@ -21,11 +21,11 @@
namespace libyuv {
// Supported rotation
enum VideoRotationMode
enum RotationMode
{
kRotateNone = 0,
kRotateClockwise = 90,
kRotateCounterClockwise = -90,
kRotateCounterClockwise = 270,
kRotate180 = 180,
};
@ -51,6 +51,17 @@ I420Crop(uint8* frame,
int src_width, int src_height,
int dst_width, int dst_height);
// Rotate I420 frame
int
I420Rotate(const uint8* src_yplane, int src_ystride,
const uint8* src_uplane, int src_ustride,
const uint8* src_vplane, int src_vstride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int width, int height,
RotationMode mode);
} // namespace libyuv

3
libyuv.gyp
View File

@ -33,6 +33,7 @@
'common/common.h',
'common/constructor_magic.h',
'source/cpu_id.h',
'source/rotate.h'
'source/row.h',
'source/video_common.h',
@ -42,6 +43,8 @@
'source/format_conversion.cc',
'source/general.cc',
'source/planar_functions.cc',
'source/rotate.cc',
'source/rotate_deinterleave.cc',
'source/row_table.cc',
'source/scale.cc',
'source/video_common.cc',

69
source/general.cc
View File

@ -12,6 +12,10 @@
#include <string.h> // memcpy(), memset()
#include "planar_functions.h"
#include "rotate.h"
namespace libyuv {
int
@ -305,4 +309,69 @@ I420CropPad(const uint8* src_frame, int src_width,
return 0;
}
int
I420Rotate(const uint8* src_yplane, int src_ystride,
const uint8* src_uplane, int src_ustride,
const uint8* src_vplane, int src_vstride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int width, int height,
RotationMode mode)
{
switch (mode){
// TODO: should return int
case kRotateNone:
// copy frame
I420Copy(src_yplane, src_ystride,
src_uplane, src_ustride,
src_vplane, src_vstride,
dst_yplane, dst_ystride,
dst_uplane, dst_ustride,
dst_vplane, dst_vstride,
width, height);
return 0;
break;
case kRotateClockwise:
Rotate90(src_yplane, src_ystride,
dst_yplane, dst_ystride,
width, height);
Rotate90(src_uplane, src_ustride,
dst_uplane, dst_ustride,
width, height);
Rotate90(src_vplane, src_vstride,
dst_vplane, dst_vstride,
width, height);
return 0;
break;
case kRotateCounterClockwise:
Rotate270(src_yplane, src_ystride,
dst_yplane, dst_ystride,
width, height);
Rotate270(src_uplane, src_ustride,
dst_uplane, dst_ustride,
width, height);
Rotate270(src_vplane, src_vstride,
dst_vplane, dst_vstride,
width, height);
return 0;
break;
case kRotate180:
Rotate180(src_yplane, src_ystride,
dst_yplane, dst_ystride,
width, height);
Rotate180(src_uplane, src_ustride,
dst_uplane, dst_ustride,
width, height);
Rotate180(src_vplane, src_vstride,
dst_vplane, dst_vstride,
width, height);
return 0;
break;
default:
return -1;
break;
}
}
} // nmaespace libyuv