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FS#10118 & FS#10165 : lcd_blit_yuv() for Sansa Fuze & Sansa e200v2

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20919 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré 2009-05-12 13:22:39 +00:00
parent f2c18d6922
commit b1d03ccee7
8 changed files with 681 additions and 51 deletions
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99
firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
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@ -74,7 +74,7 @@ static volatile bool lcd_busy = false;
#define R_GAMMA_GRAD_ADJ_NEG 0x37
#define R_GAMMA_AMP_ADJ_RES_POS 0x38
#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
#define R_GATE_SCAN_POS 0x40
#define R_VERT_SCROLL_CONTROL 0x41
@ -89,6 +89,7 @@ static volatile bool lcd_busy = false;
static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL;
#define R_ENTRY_MODE_VERT 0x7038
#define R_ENTRY_MODE_SOLID_VERT 0x1038
#define R_ENTRY_MODE_VIDEO 0x7020
/* Reverse Flag */
@ -182,7 +183,7 @@ void lcd_set_invert_display(bool yesno)
void lcd_set_flip(bool yesno)
{
display_flipped = yesno;
r_entry_mode = yesno ? R_ENTRY_MODE_HORZ_FLIPPED :
R_ENTRY_MODE_HORZ_NORMAL;
}
@ -253,13 +254,13 @@ static void _display_on(void)
/* DC12-10 = 000b: Step-up1 = clock/8,
* DC02-00 = 000b: Step-up2 = clock/16,
* VC2-0 = 010b: VciOUT = 0.87 * VciLVL */
lcd_write_reg(R_POWER_CONTROL2, 0x0002);
lcd_write_reg(R_POWER_CONTROL2, 0x0002);
/* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */
lcd_write_reg(R_POWER_CONTROL3, 0x0008);
lcd_delay(40);
lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */
/* This register is unknown */
@ -270,8 +271,8 @@ static void _display_on(void)
lcd_delay(10);
lcd_write_reg(R_POWER_CONTROL2, 0x0000);
lcd_write_reg(R_POWER_CONTROL3, 0x0013);
lcd_write_reg(R_POWER_CONTROL2, 0x0000);
lcd_write_reg(R_POWER_CONTROL3, 0x0013);
lcd_delay(20);
@ -296,7 +297,7 @@ static void _display_on(void)
lcd_write_reg(R_GATE_SCAN_POS, 0);
lcd_write_reg(R_VERT_SCROLL_CONTROL, 0);
lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
lcd_write_reg(R_2ND_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
@ -356,6 +357,30 @@ bool lcd_active(void)
/*** update 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(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);
void lcd_yuv_set_options(unsigned options)
{
lcd_yuv_options = options;
}
static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
{
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
lcd_write_reg(R_RAM_ADDR_SET, (ymin << 8) | (LCD_WIDTH-1 - xmin));
}
/* Performance function to blit a YUV bitmap directly to the LCD
* src_x, src_y, width and height should be even
* x, y, width and height have to be within LCD bounds
@ -364,14 +389,58 @@ 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)
{
(void)src;
(void)src_x;
(void)src_y;
(void)stride;
(void)x;
(void)y;
(void)width;
(void)height;
unsigned char const * yuv_src[3];
off_t z;
lcd_busy = true;
/* Sorry, but width and height must be >= 2 or else */
width &= ~1;
height >>= 1;
z = stride*src_y;
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]);
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO);
if (lcd_yuv_options & LCD_YUV_DITHER)
{
do
{
lcd_window_blit(y, x, y+1, x+width-1);
/* Start write to GRAM */
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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_window_blit(y, x, y+1, x+width-1);
/* Start write to GRAM */
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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);
}
lcd_busy = false;
}
/* Update the display.