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video: bmp: Support rgba8888 pixel format

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Adding the support for RGBA8888 format for BMP decoding.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/322910eb24692f6140a001796501270eb1c53d9a.1684312924.git.michal.simek@amd.com
This commit is contained in:
Michal Simek 2023-05-17 10:42:08 +02:00
parent e9500ba9e0
commit f6de01d6af
1 changed files with 36 additions and 0 deletions
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36
drivers/video/video_bmp.c
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@ -42,6 +42,18 @@ static u32 get_bmp_col_x2r10g10b10(struct bmp_color_table_entry *cte)
(cte->blue << 2U));
}
/**
* get_bmp_col_rgba8888() - Convert a colour-table entry into a rgba8888 pixel value
*
* Return: value to write to the rgba8888 frame buffer for this palette entry
*/
static u32 get_bmp_col_rgba8888(struct bmp_color_table_entry *cte)
{
return ((cte->red) |
(cte->green << 8U) |
(cte->blue << 16U) | 0xff << 24U);
}
/**
* write_pix8() - Write a pixel from a BMP image into the framebuffer
*
@ -71,6 +83,8 @@ static void write_pix8(u8 *fb, uint bpix, enum video_format eformat,
*fb++ = cte->blue;
} else if (eformat == VIDEO_X2R10G10B10) {
*(u32 *)fb = get_bmp_col_x2r10g10b10(cte);
} else if (eformat == VIDEO_RGBA8888) {
*(u32 *)fb = get_bmp_col_rgba8888(cte);
} else {
*fb++ = cte->blue;
*fb++ = cte->green;
@ -382,6 +396,17 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
*fb++ = (pix >> 8) & 0xff;
*fb++ = (pix >> 16) & 0xff;
*fb++ = pix >> 24;
} else if (eformat == VIDEO_RGBA8888) {
u32 pix;
pix = *bmap++ << 8U; /* blue */
pix |= *bmap++ << 16U; /* green */
pix |= *bmap++ << 24U; /* red */
*fb++ = (pix >> 24) & 0xff;
*fb++ = (pix >> 16) & 0xff;
*fb++ = (pix >> 8) & 0xff;
*fb++ = 0xff;
} else {
*fb++ = *bmap++;
*fb++ = *bmap++;
@ -409,6 +434,17 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
*fb++ = (pix >> 8) & 0xff;
*fb++ = (pix >> 16) & 0xff;
*fb++ = pix >> 24;
} else if (eformat == VIDEO_RGBA8888) {
u32 pix;
pix = *bmap++ << 8U; /* blue */
pix |= *bmap++ << 16U; /* green */
pix |= *bmap++ << 24U; /* red */
bmap++;
*fb++ = (pix >> 24) & 0xff;
*fb++ = (pix >> 16) & 0xff;
*fb++ = (pix >> 8) & 0xff;
*fb++ = 0xff; /* opacity */
} else {
*fb++ = *bmap++;
*fb++ = *bmap++;