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Do the clamping a little better.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13254 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-04-24 03:38:19 +00:00
parent 0d032d1fa1
commit 72e6dd5e0c
1 changed files with 16 additions and 19 deletions
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35
apps/plugins/mpegplayer/video_out_rockbox.c
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@ -31,9 +31,6 @@ extern struct plugin_api* rb;
#include "mpeg2.h" #include "mpeg2.h"
#include "video_out.h" #include "video_out.h"
#define CSUB_X 2
#define CSUB_Y 2
static int image_width; static int image_width;
static int image_height; static int image_height;
static int image_chroma_x; static int image_chroma_x;
@ -119,11 +116,11 @@ static void yuv_bitmap_part(unsigned char * const src[3],
g = y + guv; g = y + guv;
b = y + bu; b = y + bu;
if ((unsigned)(r | g | b) > 63*256) if ((unsigned)(r | g | b) > 64*256-1)
{ {
r = clamp(r, 0, 63*256); r = clamp(r, 0, 64*256-1);
g = clamp(g, 0, 63*256); g = clamp(g, 0, 64*256-1);
b = clamp(b, 0, 63*256); b = clamp(b, 0, 64*256-1);
} }
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
@ -139,11 +136,11 @@ static void yuv_bitmap_part(unsigned char * const src[3],
g = y + guv; g = y + guv;
b = y + bu; b = y + bu;
if ((unsigned)(r | g | b) > 63*256) if ((unsigned)(r | g | b) > 64*256-1)
{ {
r = clamp(r, 0, 63*256); r = clamp(r, 0, 64*256-1);
g = clamp(g, 0, 63*256); g = clamp(g, 0, 64*256-1);
b = clamp(b, 0, 63*256); b = clamp(b, 0, 64*256-1);
} }
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
@ -184,11 +181,11 @@ static void yuv_bitmap_part(unsigned char * const src[3],
g = y + guv; g = y + guv;
b = y + bu; b = y + bu;
if ((unsigned)(r | g | b) > 63*256) if ((unsigned)(r | g | b) > 64*256-1)
{ {
r = clamp(r, 0, 63*256); r = clamp(r, 0, 64*256-1);
g = clamp(g, 0, 63*256); g = clamp(g, 0, 64*256-1);
b = clamp(b, 0, 63*256); b = clamp(b, 0, 64*256-1);
} }
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
@ -204,11 +201,11 @@ static void yuv_bitmap_part(unsigned char * const src[3],
g = y + guv; g = y + guv;
b = y + bu; b = y + bu;
if ((unsigned)(r | g | b) > 63*256) if ((unsigned)(r | g | b) > 64*256-1)
{ {
r = clamp(r, 0, 63*256); r = clamp(r, 0, 64*256-1);
g = clamp(g, 0, 63*256); g = clamp(g, 0, 64*256-1);
b = clamp(b, 0, 63*256); b = clamp(b, 0, 64*256-1);
} }
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);