diff options
Diffstat (limited to 'firmware/target/arm/sandisk/sansa-c200/lcd-c200.c')
| -rw-r--r-- | firmware/target/arm/sandisk/sansa-c200/lcd-c200.c | 54 |
1 files changed, 43 insertions, 11 deletions
diff --git a/firmware/target/arm/sandisk/sansa-c200/lcd-c200.c b/firmware/target/arm/sandisk/sansa-c200/lcd-c200.c index 5975ab159d..fa8581f286 100644 --- a/firmware/target/arm/sandisk/sansa-c200/lcd-c200.c +++ b/firmware/target/arm/sandisk/sansa-c200/lcd-c200.c @@ -22,6 +22,9 @@ #include "kernel.h" #include "system.h" +/* Display status */ +static unsigned lcd_yuv_options NOCACHEBSS_ATTR = 0; + /* LCD command set for Samsung S6B33B2 */ #define R_OSCILLATION_MODE 0x02 @@ -206,10 +209,20 @@ void lcd_blit(const fb_data* data, int x, int by, int width, (void)stride; } +void lcd_yuv_set_options(unsigned options) +{ + lcd_yuv_options = options; +} + /* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */ extern void lcd_write_yuv420_lines(unsigned char const * const src[3], int width, int stride); +extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3], + int width, + int stride, + int x_screen, /* To align dither pattern */ + int y_screen); /* Performance function to blit a YUV bitmap directly to the LCD */ void lcd_yuv_blit(unsigned char * const src[3], int src_x, int src_y, int stride, @@ -236,19 +249,38 @@ void lcd_yuv_blit(unsigned char * const src[3], lcd_send_command(x); lcd_send_command(x + width - 1); - do + if (lcd_yuv_options & LCD_YUV_DITHER) { - lcd_send_command(R_Y_ADDR_AREA); - lcd_send_command(y); - lcd_send_command(y + 1); - - lcd_write_yuv420_lines(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; - y += 2; + do + { + lcd_send_command(R_Y_ADDR_AREA); + lcd_send_command(y); + lcd_send_command(y + 1); + + lcd_write_yuv420_lines_odither(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; + y += 2; + } + while (--height > 0); + } + else + { + do + { + lcd_send_command(R_Y_ADDR_AREA); + lcd_send_command(y); + lcd_send_command(y + 1); + + lcd_write_yuv420_lines(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; + y += 2; + } + while (--height > 0); } - while (--height > 0); } /* Update the display. |