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Add I422ToRGB565

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BUG=libyuv:699
TESTED=LibYUVConvertTest.I420ToARGB_RGB565_Opt

Change-Id: I87943bcad056fbbe051301f45c7dc0ae0620c837
Reviewed-on: https://chromium-review.googlesource.com/478578
Reviewed-by: Frank Barchard <fbarchard@google.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
This commit is contained in:
Frank Barchard 2017-04-14 17:10:57 -07:00 committed by Commit Bot
parent bd0faedbd2
commit fc02cc3806
3 changed files with 83 additions and 1 deletions
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12
include/libyuv/convert_from.h
View File

@ -200,6 +200,18 @@ int I420ToRGB565(const uint8* src_y,
int width,
int height);
LIBYUV_API
int I422ToRGB565(const uint8* src_y,
int src_stride_y,
const uint8* src_u,
int src_stride_u,
const uint8* src_v,
int src_stride_v,
uint8* dst_frame,
int dst_stride_frame,
int width,
int height);
// Convert I420 To RGB565 with 4x4 dither matrix (16 bytes).
// Values in dither matrix from 0 to 7 recommended.
// The order of the dither matrix is first byte is upper left.

69
source/convert_from.cc
View File

@ -890,6 +890,75 @@ int I420ToRGB565(const uint8* src_y,
return 0;
}
// Convert I422 to RGB565.
LIBYUV_API
int I422ToRGB565(const uint8* src_y,
int src_stride_y,
const uint8* src_u,
int src_stride_u,
const uint8* src_v,
int src_stride_v,
uint8* dst_rgb565,
int dst_stride_rgb565,
int width,
int height) {
int y;
void (*I422ToRGB565Row)(const uint8* y_buf, const uint8* u_buf,
const uint8* v_buf, uint8* rgb_buf,
const struct YuvConstants* yuvconstants, int width) =
I422ToRGB565Row_C;
if (!src_y || !src_u || !src_v || !dst_rgb565 || width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_rgb565 = dst_rgb565 + (height - 1) * dst_stride_rgb565;
dst_stride_rgb565 = -dst_stride_rgb565;
}
#if defined(HAS_I422TORGB565ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToRGB565Row = I422ToRGB565Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TORGB565ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToRGB565Row = I422ToRGB565Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToRGB565Row = I422ToRGB565Row_AVX2;
}
}
#endif
#if defined(HAS_I422TORGB565ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToRGB565Row = I422ToRGB565Row_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_NEON;
}
}
#endif
#if defined(HAS_I422TORGB565ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToRGB565Row = I422ToRGB565Row_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_MSA;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToRGB565Row(src_y, src_u, src_v, dst_rgb565, &kYuvI601Constants, width);
dst_rgb565 += dst_stride_rgb565;
src_y += src_stride_y;
src_u += src_stride_u;
src_v += src_stride_v;
}
return 0;
}
// Ordered 8x8 dither for 888 to 565. Values from 0 to 7.
static const uint8 kDither565_4x4[16] = {
0, 4, 1, 5, 6, 2, 7, 3, 1, 5, 0, 4, 7, 3, 6, 2,

3
unit_test/convert_test.cc
View File

@ -576,6 +576,7 @@ TESTPLANARTOB(I420, 2, 2, RGB565, 2, 2, 1, 9, ARGB, 4)
TESTPLANARTOB(I420, 2, 2, ARGB1555, 2, 2, 1, 9, ARGB, 4)
TESTPLANARTOB(I420, 2, 2, ARGB4444, 2, 2, 1, 17, ARGB, 4)
TESTPLANARTOB(I422, 2, 1, ARGB, 4, 4, 1, 2, ARGB, 4)
TESTPLANARTOB(I422, 2, 1, RGB565, 2, 2, 1, 9, ARGB, 4)
TESTPLANARTOB(J422, 2, 1, ARGB, 4, 4, 1, 2, ARGB, 4)
TESTPLANARTOB(J422, 2, 1, ABGR, 4, 4, 1, 2, ARGB, 4)
TESTPLANARTOB(H422, 2, 1, ARGB, 4, 4, 1, 2, ARGB, 4)
@ -1800,7 +1801,7 @@ TESTPLANARTOE(I420, 2, 2, RAW, 1, 3, ARGB, 4)
TESTPLANARTOE(I420, 2, 2, ARGB, 1, 4, RGB565, 2)
TESTPLANARTOE(I420, 2, 2, ARGB, 1, 4, ARGB1555, 2)
TESTPLANARTOE(I420, 2, 2, ARGB, 1, 4, ARGB4444, 2)
TESTPLANARTOE(I422, 2, 1, ARGB, 1, 4, ARGB, 4)
TESTPLANARTOE(I422, 2, 1, ARGB, 1, 4, RGB565, 2)
TESTPLANARTOE(J422, 2, 1, ARGB, 1, 4, ARGB, 4)
TESTPLANARTOE(J422, 2, 1, ABGR, 1, 4, ARGB, 4)
TESTPLANARTOE(H422, 2, 1, ARGB, 1, 4, ARGB, 4)