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Implementation of lcd_yuv_blit() for the ipod 5g.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10487 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2006-08-08 21:28:08 +00:00
parent c4c56a3da7
commit 13b23fbcdb
5 changed files with 169 additions and 6 deletions
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3
apps/plugin.c
View file

@ -464,7 +464,8 @@ static const struct plugin_api rockbox_api = {
#endif
#if (CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300) && !defined(SIMULATOR)
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO) && \
!defined(SIMULATOR)
lcd_yuv_blit,
#endif

3
apps/plugin.h
View file

@ -540,7 +540,8 @@ struct plugin_api {
int height);
#endif
#if (CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300) && !defined(SIMULATOR)
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO) && \
!defined(SIMULATOR)
void (*lcd_yuv_blit)(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height);

3
apps/plugins/mpegplayer/video_out_rockbox.c
View file

@ -201,7 +201,8 @@ static void rockbox_draw_frame (vo_instance_t * instance,
(void)instance;
#if (CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300) && !defined(SIMULATOR)
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO) \
&& !defined(SIMULATOR)
rb->lcd_yuv_blit(buf,
0,0,image_width,
output_x,output_y,output_width,output_height);

164
firmware/drivers/lcd-ipodvideo.c
View file

@ -118,12 +118,12 @@ static unsigned lcd_bcm_read32(unsigned address) {
return inw(0x30000000) | inw(0x30000000) << 16;
}
static int finishup_needed = 0;
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height) ICODE_ATTR;
void lcd_update_rect(int x, int y, int width, int height)
{
static int finishup_needed = 0;
{
int endy = x + width;
/* Ensure x and width are both even - so we can read 32-bit aligned
@ -204,3 +204,163 @@ void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
#define CSUB_X 2
#define CSUB_Y 2
#define RYFAC (31*257)
#define GYFAC (63*257)
#define BYFAC (31*257)
#define RVFAC 11170 /* 31 * 257 * 1.402 */
#define GVFAC (-11563) /* 63 * 257 * -0.714136 */
#define GUFAC (-5572) /* 63 * 257 * -0.344136 */
#define BUFAC 14118 /* 31 * 257 * 1.772 */
#define ROUNDOFFS (127*257)
/* 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,
int x, int y, int width, int height)
{
int ymax;
width = (width + 1) & ~1;
if (finishup_needed) {
unsigned int data;
/* Bottom-half of original lcd_bcm_finishup() function */
do {
/* This function takes about 14ms to execute - so we yield() */
yield();
data = lcd_bcm_read32(0x1F8);
} while (data == 0xFFFA0005 || data == 0xFFFF);
}
lcd_bcm_read32(0x1FC);
{
int rect1, rect2, rect3, rect4;
int count = (width * height) << 1;
/* calculate the drawing region */
rect1 = x; /* start horiz */
rect2 = y; /* start vert */
rect3 = (x + width) - 1; /* max horiz */
rect4 = (y + height) - 1; /* max vert */
/* setup the drawing region */
lcd_bcm_setup_rect(0x34, rect1, rect2, rect3, rect4, count);
}
/* write out destination address as two 16bit values */
outw((0xE0020 & 0xffff), 0x30010000);
outw((0xE0020 >> 16), 0x30010000);
/* wait for it to be write ready */
while ((inw(0x30030000) & 0x2) == 0);
ymax = y + height - 1 ;
for (; y <= ymax ; y++)
{
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
const unsigned char *usrc = src[1] + (stride/CSUB_X) * (src_y/CSUB_Y)
+ (src_x/CSUB_X);
const unsigned char *vsrc = src[2] + (stride/CSUB_X) * (src_y/CSUB_Y)
+ (src_x/CSUB_X);
const unsigned char *row_end = ysrc + width;
int y, u, v;
int red, green, blue;
unsigned rbits, gbits, bbits;
unsigned short pixel;
int rc, gc, bc;
do
{
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
bc = BUFAC * u + ROUNDOFFS;
/* Pixel 1 */
y = *ysrc++;
red = RYFAC * y + rc;
green = GYFAC * y + gc;
blue = BYFAC * y + bc;
if ((unsigned)red > (RYFAC*255+ROUNDOFFS))
{
if (red < 0)
red = 0;
else
red = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green > (GYFAC*255+ROUNDOFFS))
{
if (green < 0)
green = 0;
else
green = (GYFAC*255+ROUNDOFFS);
}
if ((unsigned)blue > (BYFAC*255+ROUNDOFFS))
{
if (blue < 0)
blue = 0;
else
blue = (BYFAC*255+ROUNDOFFS);
}
rbits = ((unsigned)red) >> 16 ;
gbits = ((unsigned)green) >> 16 ;
bbits = ((unsigned)blue) >> 16 ;
outw((rbits << 11) | (gbits << 5) | bbits, 0x30000000);
/* Pixel 2 */
y = *ysrc++;
red = RYFAC * y + rc;
green = GYFAC * y + gc;
blue = BYFAC * y + bc;
if ((unsigned)red > (RYFAC*255+ROUNDOFFS))
{
if (red < 0)
red = 0;
else
red = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green > (GYFAC*255+ROUNDOFFS))
{
if (green < 0)
green = 0;
else
green = (GYFAC*255+ROUNDOFFS);
}
if ((unsigned)blue > (BYFAC*255+ROUNDOFFS))
{
if (blue < 0)
blue = 0;
else
blue = (BYFAC*255+ROUNDOFFS);
}
rbits = ((unsigned)red) >> 16 ;
gbits = ((unsigned)green) >> 16 ;
bbits = ((unsigned)blue) >> 16 ;
outw((rbits << 11) | (gbits << 5) | bbits, 0x30000000);
}
while (ysrc < row_end);
src_y++;
}
/* Top-half of original lcd_bcm_finishup() function */
outw(0x31, 0x30030000);
lcd_bcm_read32(0x1FC);
finishup_needed = 1;
}

2
firmware/export/lcd.h
View file

@ -72,7 +72,7 @@ extern void lcd_puts_scroll_style(int x, int y, const unsigned char* string,
extern void lcd_icon(int icon, bool enable);
#if CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO
void lcd_yuv_blit(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height);