devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Update lcd-as-memframe.S to only rotate YUV data for portrait LCDs (and remove the D2's temporary C implementation). Enable MpegPlayer dithering option for D2.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18055 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rob Purchase 2008-07-15 17:54:58 +00:00
parent bda60d18d8
commit adb6a00c59
5 changed files with 47 additions and 92 deletions
Download patch file Download diff file Expand all files Collapse all files

85
firmware/target/arm/tcc780x/cowond2/lcd-cowond2.c
View file

@ -359,88 +359,11 @@ void lcd_yuv_set_options(unsigned options)
}
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
static void lcd_write_yuv420_lines(fb_data *dst,
unsigned char const * const src[3],
int width,
int stride)
{
int i = 0;
int y;
int rv, guv, bu;
int cb, cr;
int r, g, b;
unsigned const char *y_p = src[0];
extern void lcd_write_yuv420_lines(fb_data *dst,
unsigned char const * const src[3],
int width,
int stride);
for (i = 0; i < width/2; i++)
{
y_p++;
/* YCbCr -> RGB conversion */
cb = src[1][i] - 128;
cr = src[2][i] - 128;
rv = (cr*101 + 56) >> 9;
guv = (128 - cr*51 + cb*24) >> 8;
bu = (cb*128 + 256) >> 9;
y = (*y_p - 16)*74;
r = (y >> 9) + rv;
g = (y >> 8) + guv;
b = (y >> 9) + bu;
if (r < 0) r = 0;
else if (r > 31) r = 31;
if (g < 0) g = 0;
else if (g > 63) g = 63;
if (b < 0) b = 0;
else if (b > 31) b = 31;
dst[i*2] = (r << 11) | (g << 5) | b;
/* YCbCr -> RGB conversion */
y = (*(y_p+stride) - 16)*74;
r = (y >> 9) + rv;
g = (y >> 8) + guv;
b = (y >> 9) + bu;
if (r < 0) r = 0;
else if (r > 31) r = 31;
if (g < 0) g = 0;
else if (g > 63) g = 63;
if (b < 0) b = 0;
else if (b > 31) b = 31;
dst[i*2+LCD_FBWIDTH] = (r << 11) | (g << 5) | b;
y_p++;
/* YCbCr -> RGB conversion */
y = (*y_p - 16)*74;
r = (y >> 9) + rv;
g = (y >> 8) + guv;
b = (y >> 9) + bu;
if (r < 0) r = 0;
else if (r > 31) r = 31;
if (g < 0) g = 0;
else if (g > 63) g = 63;
if (b < 0) b = 0;
else if (b > 31) b = 31;
dst[i*2+1] = (r << 11) | (g << 5) | b;
/* YCbCr -> RGB conversion */
y = (*(y_p+stride) - 16)*74;
r = (y >> 9) + rv;
g = (y >> 8) + guv;
b = (y >> 9) + bu;
if (r < 0) r = 0;
else if (r > 31) r = 31;
if (g < 0) g = 0;
else if (g > 63) g = 63;
if (b < 0) b = 0;
else if (b > 31) b = 31;
dst[i*2+1+LCD_FBWIDTH] = (r << 11) | (g << 5) | b;
}
}
extern void lcd_write_yuv420_lines_odither(fb_data *dst,
unsigned char const * const src[3],
int width,