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package: starfive: v4l2_test: Add ayuv to nv12

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Add ayuv to nv12.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
This commit is contained in:
Changhuang Liang
2023-06-27 14:54:41 +08:00
parent 4e6c0bc9d0
commit 434bff4603
4 changed files with 81 additions and 2 deletions
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package/starfive/v4l2_test/convert.c
+60
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@@ -859,3 +859,63 @@ int convert_rgb888_to_rgb(const uint8_t *inBuf, uint8_t *outBuf, int imgWidth, i
free(tmp);
return 0;
}
enum AYUV
{
AYUV_V = 0,
AYUV_U = 1,
AYUV_Y = 2,
AYUV_A = 3,
};
int convert_ayuv32_to_nv12(const uint8_t *inBuf, uint8_t *outBuf, int imgWidth, int imgHeight)
{
int i, j;
unsigned int uv_start_index = imgWidth * imgHeight, frameWidthProd4 = imgWidth * 4;
unsigned int frameWidthDiv2 = imgWidth / 2, frameWidthDiv4 = imgWidth / 4;
unsigned int rowsFrameWidth, rowsFrameWidthProd4, rowsFrameWidthProd4ColsProd4, rowsAdd1FrameWidthProd4ColsProd4;
unsigned int uvStartIndexRowsFrameWidthDiv2, uvStartIndexRowsFrameWidthDiv2Cols;
int dstSize = imgWidth * imgHeight * 3 / 2;
/* 1. Execute the AYUVToNV12 algorithm. */
/* Y/U/V components extraction for even index i */
for (i = 0; i < imgHeight; i += 2)
{
rowsFrameWidth = i * imgWidth;
rowsFrameWidthProd4 = i * frameWidthProd4;
uvStartIndexRowsFrameWidthDiv2 = uv_start_index + i * frameWidthDiv2;
for (j = 0; j < frameWidthDiv4; j++)
{
/* Y components extraction for even index i */
outBuf[rowsFrameWidth + j] = inBuf[rowsFrameWidthProd4 + j * 4 + AYUV_Y];
rowsFrameWidthProd4ColsProd4 = rowsFrameWidthProd4 + j * 16;
rowsAdd1FrameWidthProd4ColsProd4 = rowsFrameWidthProd4ColsProd4 + frameWidthProd4;
uvStartIndexRowsFrameWidthDiv2Cols = uvStartIndexRowsFrameWidthDiv2 + j * 4;
/* UV components extraction for even index i: processing 4 elements every time */
outBuf[uvStartIndexRowsFrameWidthDiv2Cols] = inBuf[rowsFrameWidthProd4ColsProd4 + 1];
outBuf[uvStartIndexRowsFrameWidthDiv2Cols + 1] = inBuf[rowsAdd1FrameWidthProd4ColsProd4];
outBuf[uvStartIndexRowsFrameWidthDiv2Cols + 2] = inBuf[rowsFrameWidthProd4ColsProd4 + 9];
outBuf[uvStartIndexRowsFrameWidthDiv2Cols + 3] = inBuf[rowsAdd1FrameWidthProd4ColsProd4 + 8];
}
for (; j < imgWidth; j++)
{
outBuf[rowsFrameWidth + j] = inBuf[rowsFrameWidthProd4 + j * 4 + AYUV_Y];
}
}
/* Y components extraction for odd index i */
for (i = 1; i < imgHeight; i += 2)
{
rowsFrameWidth = i * imgWidth;
rowsFrameWidthProd4 = i * frameWidthProd4;
for (j = 0; j < imgWidth; j++)
{
outBuf[rowsFrameWidth + j] = inBuf[rowsFrameWidthProd4 + j * 4 + AYUV_Y];
}
}
return 0;
}