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Attila's Linux 2.2 patch, and contrast control applied 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4488 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
eyck 2002-02-02 23:38:35 +00:00
parent 80168a072d
commit 6a6350bce0
1 changed files with 50 additions and 4 deletions
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54
drivers/mga_vid.c
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@ -88,9 +88,8 @@ MODULE_AUTHOR("Aaron Holtzman <aholtzma@engr.uvic.ca>");
MODULE_LICENSE("GPL");
#endif
// WARNING - eyck changes
#define PARAM_BRIGHTNESS "brightness="
#define PARAM_SATURATION "saturation="
#define PARAM_CONTRAST "contrast="
#define PARAM_BLACKIE "blackie="
#define PARAM_BUFF_SIZE 4096
@ -98,7 +97,44 @@ static uint8_t *mga_param_buff = NULL;
static uint32_t mga_param_buff_size=0;
static uint32_t mga_param_buff_len=0;
// end eyck
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
#include <linux/ctype.h>
#define min(x,y) (((x)<(y))?(x):(y))
unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
{
unsigned long result = 0,value;
if (!base) {
base = 10;
if (*cp == '0') {
base = 8;
cp++;
if ((*cp == 'x') && isxdigit(cp[1])) {
cp++;
base = 16;
}
}
}
while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
? toupper(*cp) : *cp)-'A'+10) < base) {
result = result*base + value;
cp++;
}
if (endp)
*endp = (char *)cp;
return result;
}
long simple_strtol(const char *cp,char **endp,unsigned int base)
{
if(*cp=='-')
return -simple_strtoul(cp+1,endp,base);
return simple_strtoul(cp,endp,base);
}
#endif
typedef struct bes_registers_s
{
@ -167,6 +203,7 @@ typedef struct bes_registers_s
//configurable stuff
int brightness;
int contrast;
int blackie;
} bes_registers_t;
@ -706,7 +743,7 @@ switch(config->format){
// brightness ; default is 0x7f;
regs.beslumactl = (regs.brightness << 16);
// contrast:
regs.beslumactl|= (0x80<<0);
regs.beslumactl|= ((regs.contrast+0x80)<<0);
//Setup destination window boundaries
besleft = x > 0 ? x : 0;
@ -1355,6 +1392,15 @@ static ssize_t mga_vid_write(struct file *file, const char *buf, size_t count, l
// printk(KERN_DEBUG "mga_vid: brightness modified ( %d ) \n",brightness);
regs.brightness=brightness;
} else
if(memcmp(buf,PARAM_CONTRAST,min(count,strlen(PARAM_CONTRAST))) == 0)
{
short contrast;
contrast=simple_strtol(&buf[strlen(PARAM_CONTRAST)],NULL,10);
if (contrast>127 || contrast<-128) { contrast=0;}
// printk(KERN_DEBUG "mga_vid: contrast modified ( %d ) \n",contrast);
regs.contrast=contrast;
} else
if(memcmp(buf,PARAM_BLACKIE,min(count,strlen(PARAM_BLACKIE))) == 0)
{
short blackie;