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Add I410Copy and I410ToI420 methods

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The I410To420 implementation does a two step approach for scaling down and 10-to-8 bit conversion using the Y plane as temporal storage.

Bug: libyuv:950
Change-Id: I3d35fad4b99e17253230456233fbd947e013c0ec
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/4110783
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
This commit is contained in:
Sergio Garcia Murillo 2022-12-21 08:34:00 +01:00 committed by libyuv LUCI CQ
parent 3abd6f36b6
commit f583b1b4b8
7 changed files with 132 additions and 2 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: 1854
Version: 1855
License: BSD
License File: LICENSE

17
include/libyuv/convert.h
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@ -299,6 +299,23 @@ int I210ToI422(const uint16_t* src_y,
int width,
int height);
#define H410ToH420 I410ToI420
LIBYUV_API
int I410ToI420(const uint16_t* src_y,
int src_stride_y,
const uint16_t* src_u,
int src_stride_u,
const uint16_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* dst_u,
int dst_stride_u,
uint8_t* dst_v,
int dst_stride_v,
int width,
int height);
#define H410ToH444 I410ToI444
LIBYUV_API
int I410ToI444(const uint16_t* src_y,

18
include/libyuv/planar_functions.h
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@ -392,6 +392,24 @@ int I210Copy(const uint16_t* src_y,
int width,
int height);
// Copy I410 to I410.
#define I410ToI410 I410Copy
LIBYUV_API
int I410Copy(const uint16_t* src_y,
int src_stride_y,
const uint16_t* src_u,
int src_stride_u,
const uint16_t* src_v,
int src_stride_v,
uint16_t* dst_y,
int dst_stride_y,
uint16_t* dst_u,
int dst_stride_u,
uint16_t* dst_v,
int dst_stride_v,
int width,
int height);
// Copy NV12. Supports inverting.
LIBYUV_API
int NV12Copy(const uint8_t* src_y,

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 1854
#define LIBYUV_VERSION 1855
#endif // INCLUDE_LIBYUV_VERSION_H_

55
source/convert.cc
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@ -291,6 +291,61 @@ int I210ToI422(const uint16_t* src_y,
0, 10);
}
LIBYUV_API
int I410ToI420(const uint16_t* src_y,
int src_stride_y,
const uint16_t* src_u,
int src_stride_u,
const uint16_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* dst_u,
int dst_stride_u,
uint8_t* dst_v,
int dst_stride_v,
int width,
int height) {
const int depth = 10;
const int scale = 1 << (24 - depth);
if (width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_y = src_y + (height - 1) * src_stride_y;
src_u = src_u + (height - 1) * src_stride_u;
src_v = src_v + (height - 1) * src_stride_v;
src_stride_y = -src_stride_y;
src_stride_u = -src_stride_u;
src_stride_v = -src_stride_v;
}
{
const int uv_width = SUBSAMPLE(width, 1, 1);
const int uv_stride = uv_width;
const int uv_height = SUBSAMPLE(height, 1, 1);
// Scale uv planes using Y plane as temp buffer and then convert to 8 bits.
ScalePlane_12(src_u, src_stride_u, width, height, (uint16_t*)dst_y,
uv_stride, uv_width, uv_height, kFilterBilinear);
Convert16To8Plane((uint16_t*)dst_y, uv_stride, dst_u, dst_stride_u, scale,
uv_width, uv_height);
ScalePlane_12(src_v, src_stride_v, width, height, (uint16_t*)dst_y,
uv_stride, uv_width, uv_height, kFilterBilinear);
Convert16To8Plane((uint16_t*)dst_y, uv_stride, dst_v, dst_stride_v, scale,
uv_width, uv_height);
// Convert Y plane last.
Convert16To8Plane(src_y, src_stride_y, dst_y, dst_stride_y, scale, width,
height);
}
return 0;
}
LIBYUV_API
int I410ToI444(const uint16_t* src_y,
int src_stride_y,

39
source/planar_functions.cc
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@ -333,6 +333,45 @@ int I210Copy(const uint16_t* src_y,
return 0;
}
// Copy I444.
LIBYUV_API
int I410Copy(const uint16_t* src_y,
int src_stride_y,
const uint16_t* src_u,
int src_stride_u,
const uint16_t* src_v,
int src_stride_v,
uint16_t* dst_y,
int dst_stride_y,
uint16_t* dst_u,
int dst_stride_u,
uint16_t* dst_v,
int dst_stride_v,
int width,
int height) {
if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_y = src_y + (height - 1) * src_stride_y;
src_u = src_u + (height - 1) * src_stride_u;
src_v = src_v + (height - 1) * src_stride_v;
src_stride_y = -src_stride_y;
src_stride_u = -src_stride_u;
src_stride_v = -src_stride_v;
}
if (dst_y) {
CopyPlane_16(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
}
CopyPlane_16(src_u, src_stride_u, dst_u, dst_stride_u, width, height);
CopyPlane_16(src_v, src_stride_v, dst_v, dst_stride_v, width, height);
return 0;
}
// Copy I400.
LIBYUV_API
int I400ToI400(const uint8_t* src_y,

1
unit_test/convert_test.cc
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@ -180,6 +180,7 @@ TESTPLANARTOP(I212, uint16_t, 2, 2, 1, I012, uint16_t, 2, 2, 2, 12)
TESTPLANARTOP(I010, uint16_t, 2, 2, 2, I420, uint8_t, 1, 2, 2, 10)
TESTPLANARTOP(I210, uint16_t, 2, 2, 1, I420, uint8_t, 1, 2, 2, 10)
TESTPLANARTOP(I210, uint16_t, 2, 2, 1, I422, uint8_t, 1, 2, 1, 10)
TESTPLANARTOP(I410, uint16_t, 2, 1, 1, I420, uint8_t, 1, 2, 2, 10)
TESTPLANARTOP(I410, uint16_t, 2, 1, 1, I444, uint8_t, 1, 1, 1, 10)
TESTPLANARTOP(I012, uint16_t, 2, 2, 2, I420, uint8_t, 1, 2, 2, 12)
TESTPLANARTOP(I212, uint16_t, 2, 2, 1, I422, uint8_t, 1, 2, 1, 12)