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Clean up the #ifdefs surrounding the definition of lcd_yuv_blit() and add an initial (untested) implementation for the Gigabeat

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10541 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2006-08-12 09:27:26 +00:00
parent 2c002d894d
commit 7fe7427de8
3 changed files with 104 additions and 10 deletions
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5
apps/plugins/mpegplayer/video_out_rockbox.c
View file

@ -200,10 +200,7 @@ static void rockbox_draw_frame (vo_instance_t * instance,
(void)id;
(void)instance;
#if (CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO \
|| CONFIG_LCD == LCD_X5) \
&& !defined(SIMULATOR)
#if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR)
rb->lcd_yuv_blit(buf,
0,0,image_width,
output_x,output_y,output_width,output_height);

6
firmware/export/lcd.h
View file

@ -71,10 +71,8 @@ extern void lcd_puts_scroll_style(int x, int y, const unsigned char* string,
int style);
extern void lcd_icon(int icon, bool enable);
#if CONFIG_LCD == LCD_IPODCOLOR || CONFIG_LCD == LCD_IPODNANO \
|| CONFIG_LCD == LCD_H300 || CONFIG_LCD == LCD_IPODVIDEO \
|| CONFIG_LCD == LCD_X5
void lcd_yuv_blit(unsigned char * const src[3],
#if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR)
extern 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);
#endif

99
firmware/target/arm/gigabeat/meg-fx/lcd-meg-fx.c
View file

@ -29,3 +29,102 @@ 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)
{
fb_data *dst, *dst_end;
width = (width + 1) & ~1;
dst = (fb_data*)FRAME + LCD_WIDTH * y + x;
dst_end = dst + LCD_WIDTH * height;
do
{
fb_data *dst_row = dst;
fb_data *row_end = dst_row + width;
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
int y, u, v;
int red, green, blue;
unsigned rbits, gbits, bbits;
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
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);
int xphase = src_x % CSUB_X;
int rc, gc, bc;
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
bc = BUFAC * u + ROUNDOFFS;
do
{
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 ;
*dst_row++ = (rbits << 11) | (gbits << 5) | bbits;
if (++xphase >= CSUB_X)
{
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
bc = BUFAC * u + ROUNDOFFS;
xphase = 0;
}
}
while (dst_row < row_end);
src_y++;
dst += LCD_WIDTH;
}
while (dst < dst_end);
}