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libyuv
Commit abe14f80 authored by mikhal@webrtc.org's avatar mikhal@webrtc.org
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libyuv: Adding conversion functions 

Review URL: http://webrtc-codereview.appspot.com/213005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@21 16f28f9a-4ce2-e073-06de-1de4eb20be90
parent 280f4fd8
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Inline Side-by-side
Showing with 159 additions and 15 deletions
include/convert.h
View file @ abe14f80
......@@ -59,6 +59,7 @@ class Convert {
const uint8* src_vplane, int src_vstride,
uint8* dst_frame, int dst_stride,
int src_width, int src_height);
static int
I420ToUYVY(const uint8* src_yplane, int src_ystride,
const uint8* src_uplane, int src_ustride,
......@@ -97,19 +98,35 @@ class Convert {
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height);
static int
I420ToABGR(const uint8* src_yplane, int src_ystride,
const uint8* src_uplane, int src_ustride,
const uint8* src_vplane, int src_vstride,
uint8* dst_frame, int dst_stride,
int src_width, int src_height);
int
static int
I420ToBGRA(const uint8* src_yplane, int src_ystride,
const uint8* src_uplane, int src_ustride,
const uint8* src_vplane, int src_vstride,
uint8* dst_frame, int dst_stride,
int src_width, int src_height);
static int`
BGRAToI420(const uint8* src_frame, int src_stride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height);
int static
ARGBToI420(const uint8* src_frame, int src_stride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height);
static int
NV12ToRGB565(const uint8* src_yplane, int src_ystride,
const uint8* src_uvplane, int src_uvstride,
......
source/convert.cc
View file @ abe14f80
......@@ -969,7 +969,6 @@ Convert::RGB24ToI420(const uint8* src_frame, int src_stride,
const uint8* inpPtr2;
int h, w;
// Assuming RGB in a bottom up orientation.
yStartPtr = dst_yplane;
yStartPtr2 = yStartPtr + dst_ystride;
uStartPtr = dst_uplane;
......@@ -1032,7 +1031,6 @@ Convert::RAWToI420(const uint8* src_frame, int src_stride,
const uint8* inpPtr2;
int h, w;
// Assuming RGB in a bottom up orientation.
yStartPtr = dst_yplane;
yStartPtr2 = yStartPtr + dst_ystride;
uStartPtr = dst_uplane;
......@@ -1080,16 +1078,15 @@ Convert::RAWToI420(const uint8* src_frame, int src_stride,
int
Convert::ABGRToI420(const uint8* src_frame, int src_stride,
Convert::BGRAToI420(const uint8* src_frame, int src_stride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height)
{
if (src_frame == NULL || dst_yplane == NULL ||
dst_vplane == NULL || dst_vplane == NULL){
dst_vplane == NULL || dst_vplane == NULL)
return -1;
}
uint8* yStartPtr;
uint8* yStartPtr2;
......@@ -1097,15 +1094,17 @@ Convert::ABGRToI420(const uint8* src_frame, int src_stride,
uint8* vStartPtr;
const uint8* inpPtr;
const uint8* inpPtr2;
int h, w;
// Assuming RGB in a bottom up orientation.
yStartPtr = dst_yplane;
yStartPtr2 = yStartPtr + dst_ystride;
uStartPtr = dst_uplane;
vStartPtr = dst_vplane;
inpPtr = src_frame;
inpPtr2 = inpPtr + 4 * src_stride;
int h, w;
for (h = 0; h < ((src_height + 1) >> 1); h++){
inpPtr = src_frame + src_stride * src_height * 3 - 3 * src_height;
inpPtr2 = inpPtr - 3 * src_stride;
for (h = 0; h < ((src_height + 1) >> 1); h++ ){
for (w = 0; w < ((src_width + 1) >> 1); w++){
// Y
yStartPtr[0] = (uint8)((66 * inpPtr[1] + 129 * inpPtr[2]
......@@ -1116,13 +1115,141 @@ Convert::ABGRToI420(const uint8* src_frame, int src_stride,
yStartPtr[1] = (uint8)((66 * inpPtr[5] + 129 * inpPtr[6]
+ 25 * inpPtr[7] + 128) >> 8) + 16;
yStartPtr2[1] = (uint8)((66 * inpPtr2[5] + 129 * inpPtr2[6]
+ 25 * inpPtr2[7] + 128) >> 8) + 16;
+ 25 * inpPtr2[7] + 128) >> 8 ) + 16;
// U
uStartPtr[0] = (uint8)((-38 * inpPtr[1] - 74 * inpPtr[2] +
112 * inpPtr[3] + 128) >> 8) + 128;
// V
vStartPtr[0] = (uint8)((112 * inpPtr[1] -94 * inpPtr[2] -
18 * inpPtr[3] + 128) >> 8) + 128;
yStartPtr += 2;
yStartPtr2 += 2;
uStartPtr++;
vStartPtr++;
inpPtr += 6;
inpPtr2 += 6;
} // end for w
yStartPtr += dst_ystride + dst_ystride - src_width;
yStartPtr2 += dst_ystride + dst_ystride - src_width;
uStartPtr += dst_ustride + dst_ustride - ((src_width + 1) >> 1);
vStartPtr += dst_vstride + dst_vstride - ((src_width + 1) >> 1);
inpPtr -= 3 * (2 * src_stride + src_width);
inpPtr2 -= 3 * (2 * src_stride + src_width);
} // end for h
return 0;
}
int
Convert::ARGBToI420(const uint8* src_frame, int src_stride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height)
{
if (src_frame == NULL || dst_yplane == NULL ||
dst_vplane == NULL || dst_vplane == NULL)
return -1;
uint8* yStartPtr;
uint8* yStartPtr2;
uint8* uStartPtr;
uint8* vStartPtr;
const uint8* inpPtr;
const uint8* inpPtr2;
int h, w;
yStartPtr = dst_yplane;
yStartPtr2 = yStartPtr + dst_ystride;
uStartPtr = dst_uplane;
vStartPtr = dst_vplane;
inpPtr = src_frame + src_stride * src_height * 3 - 3 * src_height;
inpPtr2 = inpPtr - 3 * src_stride;
for (h = 0; h < ((src_height + 1) >> 1); h++ ){
for (w = 0; w < ((src_width + 1) >> 1); w++){
// Y
yStartPtr[0] = (uint8)((66 * inpPtr[2] + 129 * inpPtr[1]
+ 25 * inpPtr[0] + 128) >> 8) + 16;
yStartPtr2[0] = (uint8)((66 * inpPtr2[2] + 129 * inpPtr2[1]
+ 25 * inpPtr2[0] + 128) >> 8) + 16;
// Moving to next column
yStartPtr[1] = (uint8)((66 * inpPtr[6] + 129 * inpPtr[5]
+ 25 * inpPtr[4] + 128) >> 8) + 16;
yStartPtr2[1] = (uint8)((66 * inpPtr2[5] + 129 * inpPtr2[4]
+ 25 * inpPtr2[3] + 128) >> 8 ) + 16;
// U
uStartPtr[0] = (uint8)((-38 * inpPtr[2] - 74 * inpPtr[1] +
112 * inpPtr[0] + 128) >> 8) + 128;
// V
vStartPtr[0] = (uint8)((112 * inpPtr[2] -94 * inpPtr[1] -
18 * inpPtr[0] + 128) >> 8) + 128;
yStartPtr += 2;
yStartPtr2 += 2;
uStartPtr++;
vStartPtr++;
inpPtr += 6;
inpPtr2 += 6;
} // end for w
yStartPtr += dst_ystride + dst_ystride - src_width;
yStartPtr2 += dst_ystride + dst_ystride - src_width;
uStartPtr += dst_ustride + dst_ustride - ((src_width + 1) >> 1);
vStartPtr += dst_vstride + dst_vstride - ((src_width + 1) >> 1);
inpPtr -= 3 * (2 * src_stride + src_width);
inpPtr2 -= 3 * (2 * src_stride + src_width);
} // end for h
return 0;
}
int
Convert::ABGRToI420(const uint8* src_frame, int src_stride,
uint8* dst_yplane, int dst_ystride,
uint8* dst_uplane, int dst_ustride,
uint8* dst_vplane, int dst_vstride,
int src_width, int src_height)
{
if (src_frame == NULL || dst_yplane == NULL ||
dst_vplane == NULL || dst_vplane == NULL){
return -1;
}
uint8* yStartPtr;
uint8* yStartPtr2;
uint8* uStartPtr;
uint8* vStartPtr;
const uint8* inpPtr;
const uint8* inpPtr2;
yStartPtr = dst_yplane;
yStartPtr2 = yStartPtr + dst_ystride;
uStartPtr = dst_uplane;
vStartPtr = dst_vplane;
inpPtr = src_frame;
inpPtr2 = inpPtr + 4 * src_stride;
int h, w;
// RGBA in memory
for (h = 0; h < ((src_height + 1) >> 1); h++){
for (w = 0; w < ((src_width + 1) >> 1); w++){
// Y
yStartPtr[0] = (uint8)((66 * inpPtr[0] + 129 * inpPtr[1]
+ 25 * inpPtr[2] + 128) >> 8) + 16;
yStartPtr2[0] = (uint8)((66 * inpPtr2[0] + 129 * inpPtr2[1]
+ 25 * inpPtr2[2] + 128) >> 8) + 16;
// Moving to next column
yStartPtr[1] = (uint8)((66 * inpPtr[4] + 129 * inpPtr[5]
+ 25 * inpPtr[6] + 128) >> 8) + 16;
yStartPtr2[1] = (uint8)((66 * inpPtr2[4] + 129 * inpPtr2[5]
+ 25 * inpPtr2[6] + 128) >> 8) + 16;
// U
uStartPtr[0] = (uint8)((-38 * inpPtr[1] - 74 * inpPtr[2]
+ 112 * inpPtr[3] + 128) >> 8) + 128;
uStartPtr[0] = (uint8)((-38 * inpPtr[0] - 74 * inpPtr[1]
+ 112 * inpPtr[2] + 128) >> 8) + 128;
// V
vStartPtr[0] = (uint8)((112 * inpPtr[1] - 94 * inpPtr[2]
- 18 * inpPtr[3] + 128) >> 8) + 128;
vStartPtr[0] = (uint8)((112 * inpPtr[0] - 94 * inpPtr[1]
- 18 * inpPtr[2] + 128) >> 8) + 128;
yStartPtr += 2;
yStartPtr2 += 2;
......
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