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Revert "Remove YUV blitting functions and LCD modes"

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This reverts commit fe6aa21e9e.

Change-Id: I8bb1e5d6c52ed1478002d2140ef494ec5d62b8e3
This commit is contained in:
Solomon Peachy 2022-10-13 11:03:53 -04:00
parent f9ea1fc79d
commit 418169aff8
54 changed files with 9638 additions and 3 deletions
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98
firmware/drivers/lcd-memframe.c
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@ -110,3 +110,101 @@ void lcd_update_rect(int x, int y, int width, int height)
}
}
#endif /* LCD_OPTIMIZED_UPDATE_RECT */
/*** YUV functions ***/
static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
extern void lcd_write_yuv420_lines(fb_data *dst,
unsigned char const * const src[3],
int width,
int stride);
extern void lcd_write_yuv420_lines_odither(fb_data *dst,
unsigned char const * const src[3],
int width,
int stride,
int x_screen, /* To align dither pattern */
int y_screen);
void lcd_yuv_set_options(unsigned options)
{
lcd_yuv_options = options;
}
#ifndef LCD_OPTIMIZED_BLIT_YUV
/* Performance function to blit a YUV bitmap directly to the LCD
* src_x, src_y, width and height should be even and within the LCD's
* boundaries.
*
* For portrait LCDs, show it rotated counterclockwise by 90 degrees
*/
void lcd_blit_yuv(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
/* Macrofy the bits that change between orientations */
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
#define LCD_FRAMEBUF_ADDR_ORIENTED(col, row) \
LCD_FRAMEBUF_ADDR(row, col)
#define lcd_write_yuv420_lines_odither_oriented(dst, src, w, s, col, row) \
lcd_write_yuv420_lines_odither(dst, src, w, s, row, col)
#define YUV_NEXTLINE() dst -= 2
#define YUV_DITHER_NEXTLINE() dst -= 2, y -= 2
#else
#define LCD_FRAMEBUF_ADDR_ORIENTED(col, row) \
LCD_FRAMEBUF_ADDR(col, row)
#define lcd_write_yuv420_lines_odither_oriented(dst, src, w, s, col, row) \
lcd_write_yuv420_lines_odither(dst, src, w, s, col, row)
#define YUV_NEXTLINE() dst += 2*LCD_FBWIDTH
#define YUV_DITHER_NEXTLINE() dst += 2*LCD_FBWIDTH, y += 2
#endif
if (!lcd_write_enabled())
return;
/* Sorry, but width and height must be >= 2 or else */
width &= ~1;
height >>= 1;
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
/* Adjust portrait coordinates to make (0, 0) the upper right corner */
y = LCD_WIDTH - 1 - y;
#endif
fb_data *dst = LCD_FRAMEBUF_ADDR_ORIENTED(x, y);
int z = stride*src_y;
unsigned char const * yuv_src[3];
yuv_src[0] = src[0] + z + src_x;
yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
if (lcd_yuv_options & LCD_YUV_DITHER)
{
do
{
lcd_write_yuv420_lines_odither_oriented(dst, yuv_src, width,
stride, x, y);
yuv_src[0] += stride << 1; /* Skip down two luma lines */
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
yuv_src[2] += stride >> 1;
YUV_DITHER_NEXTLINE();
}
while (--height > 0);
}
else
{
do
{
lcd_write_yuv420_lines(dst, yuv_src, width, stride);
yuv_src[0] += stride << 1; /* Skip down two luma lines */
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
yuv_src[2] += stride >> 1;
YUV_NEXTLINE();
}
while (--height > 0);
}
}
#endif /* LCD_OPTIMIZED_BLIT_YUV */