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Implement I010ToNV12 conversion

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I010, also known as YUV420P10, is 10 bit YUV pixel format with 3 planes.
Both I010 and NV12 are 4:2:0 subsampling. NV12 has a Y plane, and an
interleaved UV plane.

Bug: 357721018
Change-Id: If215529b9eda8e0fb32aed666ca179c90244aaff
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5764823
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
This commit is contained in:
Chunbo Hua 2024-08-06 15:51:34 +08:00 committed by Frank Barchard
parent 32ccd53bb3
commit fc94178260
2 changed files with 64 additions and 0 deletions
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15
include/libyuv/convert.h
View File

@ -525,6 +525,21 @@ int I010ToP010(const uint16_t* src_y,
int width,
int height);
// Convert 10 bit YUV I010 to NV12
LIBYUV_API
int I010ToNV12(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_uv,
int dst_stride_uv,
int width,
int height);
// Convert I210 to P210
LIBYUV_API
int I210ToP210(const uint16_t* src_y,

49
source/convert.cc
View File

@ -645,6 +645,55 @@ int I010ToP010(const uint16_t* src_y,
width, height, 1, 1, 10);
}
LIBYUV_API
int I010ToNV12(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_uv,
int dst_stride_uv,
int width,
int height) {
// Allocate temporary buffers for 3 planes in 8 bit.
uint8_t* temp_y = (uint8_t*)malloc(width * height);
uint8_t* temp_u = (uint8_t*)malloc((width / 2) * (height / 2));
uint8_t* temp_v = (uint8_t*)malloc((width / 2) * (height / 2));
int temp_stride_y = width;
int temp_stride_u = width / 2;
int temp_stride_v = width / 2;
// The first step is to convert 10 bit YUV I010 to 8 bit I420 with 3 planes.
if (I010ToI420(src_y, src_stride_y, src_u, src_stride_u, src_v, src_stride_v,
temp_y, temp_stride_y, temp_u, temp_stride_u, temp_v,
temp_stride_v, width, height) == -1) {
free(temp_y);
free(temp_u);
free(temp_v);
return -1;
}
// The second step is to convert 8 bit I420 with 3 planes to 8 bit NV12 with 2 planes.
if (I420ToNV12(temp_y, temp_stride_y, temp_u, temp_stride_u, temp_v,
temp_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
width, height) == -1) {
free(temp_y);
free(temp_u);
free(temp_v);
return -1;
}
// Free temporary buffers.
free(temp_y);
free(temp_u);
free(temp_v);
return 0;
}
LIBYUV_API
int I210ToP210(const uint16_t* src_y,
int src_stride_y,