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ConvertFromI420: use halfstride instead of halfwidth

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BUG=libyuv:660
TEST=try bots
R=kjellander@chromium.org

Review URL: https://codereview.chromium.org/2554213003 .
This commit is contained in:
Frank Barchard 2016-12-07 10:16:16 -08:00
parent 56b5bbb0be
commit dde8ba7009
3 changed files with 28 additions and 23 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 1635
Version: 1636
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 1635
#define LIBYUV_VERSION 1636
#endif // INCLUDE_LIBYUV_VERSION_H_

47
source/convert_from.cc
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@ -1094,53 +1094,58 @@ int ConvertFromI420(const uint8* y,
}
// TODO(fbarchard): Add M420.
// Triplanar formats
// TODO(fbarchard): halfstride instead of halfwidth
case FOURCC_I420:
case FOURCC_YV12: {
int halfwidth = (width + 1) / 2;
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
int halfstride = (dst_sample_stride + 1) / 2;
int halfheight = (height + 1) / 2;
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV12) {
dst_v = dst_sample + width * height;
dst_u = dst_v + halfwidth * halfheight;
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + halfstride * halfheight;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + halfwidth * halfheight;
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + halfstride * halfheight;
}
r = I420Copy(y, y_stride, u, u_stride, v, v_stride, dst_sample, width,
dst_u, halfwidth, dst_v, halfwidth, width, height);
r = I420Copy(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, halfstride, dst_v, halfstride,
width, height);
break;
}
case FOURCC_I422:
case FOURCC_YV16: {
int halfwidth = (width + 1) / 2;
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
int halfstride = (dst_sample_stride + 1) / 2;
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV16) {
dst_v = dst_sample + width * height;
dst_u = dst_v + halfwidth * height;
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + halfstride * height;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + halfwidth * height;
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + halfstride * height;
}
r = I420ToI422(y, y_stride, u, u_stride, v, v_stride, dst_sample, width,
dst_u, halfwidth, dst_v, halfwidth, width, height);
r = I420ToI422(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, halfstride, dst_v, halfstride,
width, height);
break;
}
case FOURCC_I444:
case FOURCC_YV24: {
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV24) {
dst_v = dst_sample + width * height;
dst_u = dst_v + width * height;
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + dst_sample_stride * height;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + width * height;
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + dst_sample_stride * height;
}
r = I420ToI444(y, y_stride, u, u_stride, v, v_stride, dst_sample, width,
dst_u, width, dst_v, width, width, height);
r = I420ToI444(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, dst_sample_stride, dst_v,
dst_sample_stride, width, height);
break;
}
// Formats not supported - MJPG, biplanar, some rgb formats.