410 lines
9.4 KiB
C
410 lines
9.4 KiB
C
/*
|
|
*
|
|
*
|
|
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "pvrusb2-std.h"
|
|
#include "pvrusb2-debug.h"
|
|
#include <asm/string.h>
|
|
#include <linux/slab.h>
|
|
|
|
struct std_name {
|
|
const char *name;
|
|
v4l2_std_id id;
|
|
};
|
|
|
|
|
|
#define CSTD_PAL \
|
|
(V4L2_STD_PAL_B| \
|
|
V4L2_STD_PAL_B1| \
|
|
V4L2_STD_PAL_G| \
|
|
V4L2_STD_PAL_H| \
|
|
V4L2_STD_PAL_I| \
|
|
V4L2_STD_PAL_D| \
|
|
V4L2_STD_PAL_D1| \
|
|
V4L2_STD_PAL_K| \
|
|
V4L2_STD_PAL_M| \
|
|
V4L2_STD_PAL_N| \
|
|
V4L2_STD_PAL_Nc| \
|
|
V4L2_STD_PAL_60)
|
|
|
|
#define CSTD_NTSC \
|
|
(V4L2_STD_NTSC_M| \
|
|
V4L2_STD_NTSC_M_JP| \
|
|
V4L2_STD_NTSC_M_KR| \
|
|
V4L2_STD_NTSC_443)
|
|
|
|
#define CSTD_ATSC \
|
|
(V4L2_STD_ATSC_8_VSB| \
|
|
V4L2_STD_ATSC_16_VSB)
|
|
|
|
#define CSTD_SECAM \
|
|
(V4L2_STD_SECAM_B| \
|
|
V4L2_STD_SECAM_D| \
|
|
V4L2_STD_SECAM_G| \
|
|
V4L2_STD_SECAM_H| \
|
|
V4L2_STD_SECAM_K| \
|
|
V4L2_STD_SECAM_K1| \
|
|
V4L2_STD_SECAM_L| \
|
|
V4L2_STD_SECAM_LC)
|
|
|
|
#define TSTD_B (V4L2_STD_PAL_B|V4L2_STD_SECAM_B)
|
|
#define TSTD_B1 (V4L2_STD_PAL_B1)
|
|
#define TSTD_D (V4L2_STD_PAL_D|V4L2_STD_SECAM_D)
|
|
#define TSTD_D1 (V4L2_STD_PAL_D1)
|
|
#define TSTD_G (V4L2_STD_PAL_G|V4L2_STD_SECAM_G)
|
|
#define TSTD_H (V4L2_STD_PAL_H|V4L2_STD_SECAM_H)
|
|
#define TSTD_I (V4L2_STD_PAL_I)
|
|
#define TSTD_K (V4L2_STD_PAL_K|V4L2_STD_SECAM_K)
|
|
#define TSTD_K1 (V4L2_STD_SECAM_K1)
|
|
#define TSTD_L (V4L2_STD_SECAM_L)
|
|
#define TSTD_M (V4L2_STD_PAL_M|V4L2_STD_NTSC_M)
|
|
#define TSTD_N (V4L2_STD_PAL_N)
|
|
#define TSTD_Nc (V4L2_STD_PAL_Nc)
|
|
#define TSTD_60 (V4L2_STD_PAL_60)
|
|
|
|
#define CSTD_ALL (CSTD_PAL|CSTD_NTSC|CSTD_ATSC|CSTD_SECAM)
|
|
|
|
/* Mapping of standard bits to color system */
|
|
static const struct std_name std_groups[] = {
|
|
{"PAL",CSTD_PAL},
|
|
{"NTSC",CSTD_NTSC},
|
|
{"SECAM",CSTD_SECAM},
|
|
{"ATSC",CSTD_ATSC},
|
|
};
|
|
|
|
/* Mapping of standard bits to modulation system */
|
|
static const struct std_name std_items[] = {
|
|
{"B",TSTD_B},
|
|
{"B1",TSTD_B1},
|
|
{"D",TSTD_D},
|
|
{"D1",TSTD_D1},
|
|
{"G",TSTD_G},
|
|
{"H",TSTD_H},
|
|
{"I",TSTD_I},
|
|
{"K",TSTD_K},
|
|
{"K1",TSTD_K1},
|
|
{"L",TSTD_L},
|
|
{"LC",V4L2_STD_SECAM_LC},
|
|
{"M",TSTD_M},
|
|
{"Mj",V4L2_STD_NTSC_M_JP},
|
|
{"443",V4L2_STD_NTSC_443},
|
|
{"Mk",V4L2_STD_NTSC_M_KR},
|
|
{"N",TSTD_N},
|
|
{"Nc",TSTD_Nc},
|
|
{"60",TSTD_60},
|
|
{"8VSB",V4L2_STD_ATSC_8_VSB},
|
|
{"16VSB",V4L2_STD_ATSC_16_VSB},
|
|
};
|
|
|
|
|
|
// Search an array of std_name structures and return a pointer to the
|
|
// element with the matching name.
|
|
static const struct std_name *find_std_name(const struct std_name *arrPtr,
|
|
unsigned int arrSize,
|
|
const char *bufPtr,
|
|
unsigned int bufSize)
|
|
{
|
|
unsigned int idx;
|
|
const struct std_name *p;
|
|
for (idx = 0; idx < arrSize; idx++) {
|
|
p = arrPtr + idx;
|
|
if (strlen(p->name) != bufSize) continue;
|
|
if (!memcmp(bufPtr,p->name,bufSize)) return p;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr,
|
|
unsigned int bufSize)
|
|
{
|
|
v4l2_std_id id = 0;
|
|
v4l2_std_id cmsk = 0;
|
|
v4l2_std_id t;
|
|
int mMode = 0;
|
|
unsigned int cnt;
|
|
char ch;
|
|
const struct std_name *sp;
|
|
|
|
while (bufSize) {
|
|
if (!mMode) {
|
|
cnt = 0;
|
|
while ((cnt < bufSize) && (bufPtr[cnt] != '-')) cnt++;
|
|
if (cnt >= bufSize) return 0; // No more characters
|
|
sp = find_std_name(std_groups, ARRAY_SIZE(std_groups),
|
|
bufPtr,cnt);
|
|
if (!sp) return 0; // Illegal color system name
|
|
cnt++;
|
|
bufPtr += cnt;
|
|
bufSize -= cnt;
|
|
mMode = !0;
|
|
cmsk = sp->id;
|
|
continue;
|
|
}
|
|
cnt = 0;
|
|
while (cnt < bufSize) {
|
|
ch = bufPtr[cnt];
|
|
if (ch == ';') {
|
|
mMode = 0;
|
|
break;
|
|
}
|
|
if (ch == '/') break;
|
|
cnt++;
|
|
}
|
|
sp = find_std_name(std_items, ARRAY_SIZE(std_items),
|
|
bufPtr,cnt);
|
|
if (!sp) return 0; // Illegal modulation system ID
|
|
t = sp->id & cmsk;
|
|
if (!t) return 0; // Specific color + modulation system illegal
|
|
id |= t;
|
|
if (cnt < bufSize) cnt++;
|
|
bufPtr += cnt;
|
|
bufSize -= cnt;
|
|
}
|
|
|
|
if (idPtr) *idPtr = id;
|
|
return !0;
|
|
}
|
|
|
|
|
|
unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize,
|
|
v4l2_std_id id)
|
|
{
|
|
unsigned int idx1,idx2;
|
|
const struct std_name *ip,*gp;
|
|
int gfl,cfl;
|
|
unsigned int c1,c2;
|
|
cfl = 0;
|
|
c1 = 0;
|
|
for (idx1 = 0; idx1 < ARRAY_SIZE(std_groups); idx1++) {
|
|
gp = std_groups + idx1;
|
|
gfl = 0;
|
|
for (idx2 = 0; idx2 < ARRAY_SIZE(std_items); idx2++) {
|
|
ip = std_items + idx2;
|
|
if (!(gp->id & ip->id & id)) continue;
|
|
if (!gfl) {
|
|
if (cfl) {
|
|
c2 = scnprintf(bufPtr,bufSize,";");
|
|
c1 += c2;
|
|
bufSize -= c2;
|
|
bufPtr += c2;
|
|
}
|
|
cfl = !0;
|
|
c2 = scnprintf(bufPtr,bufSize,
|
|
"%s-",gp->name);
|
|
gfl = !0;
|
|
} else {
|
|
c2 = scnprintf(bufPtr,bufSize,"/");
|
|
}
|
|
c1 += c2;
|
|
bufSize -= c2;
|
|
bufPtr += c2;
|
|
c2 = scnprintf(bufPtr,bufSize,
|
|
ip->name);
|
|
c1 += c2;
|
|
bufSize -= c2;
|
|
bufPtr += c2;
|
|
}
|
|
}
|
|
return c1;
|
|
}
|
|
|
|
|
|
// Template data for possible enumerated video standards. Here we group
|
|
// standards which share common frame rates and resolution.
|
|
static struct v4l2_standard generic_standards[] = {
|
|
{
|
|
.id = (TSTD_B|TSTD_B1|
|
|
TSTD_D|TSTD_D1|
|
|
TSTD_G|
|
|
TSTD_H|
|
|
TSTD_I|
|
|
TSTD_K|TSTD_K1|
|
|
TSTD_L|
|
|
V4L2_STD_SECAM_LC |
|
|
TSTD_N|TSTD_Nc),
|
|
.frameperiod =
|
|
{
|
|
.numerator = 1,
|
|
.denominator= 25
|
|
},
|
|
.framelines = 625,
|
|
.reserved = {0,0,0,0}
|
|
}, {
|
|
.id = (TSTD_M|
|
|
V4L2_STD_NTSC_M_JP|
|
|
V4L2_STD_NTSC_M_KR),
|
|
.frameperiod =
|
|
{
|
|
.numerator = 1001,
|
|
.denominator= 30000
|
|
},
|
|
.framelines = 525,
|
|
.reserved = {0,0,0,0}
|
|
}, { // This is a total wild guess
|
|
.id = (TSTD_60),
|
|
.frameperiod =
|
|
{
|
|
.numerator = 1001,
|
|
.denominator= 30000
|
|
},
|
|
.framelines = 525,
|
|
.reserved = {0,0,0,0}
|
|
}, { // This is total wild guess
|
|
.id = V4L2_STD_NTSC_443,
|
|
.frameperiod =
|
|
{
|
|
.numerator = 1001,
|
|
.denominator= 30000
|
|
},
|
|
.framelines = 525,
|
|
.reserved = {0,0,0,0}
|
|
}
|
|
};
|
|
|
|
#define generic_standards_cnt ARRAY_SIZE(generic_standards)
|
|
|
|
static struct v4l2_standard *match_std(v4l2_std_id id)
|
|
{
|
|
unsigned int idx;
|
|
for (idx = 0; idx < generic_standards_cnt; idx++) {
|
|
if (generic_standards[idx].id & id) {
|
|
return generic_standards + idx;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int pvr2_std_fill(struct v4l2_standard *std,v4l2_std_id id)
|
|
{
|
|
struct v4l2_standard *template;
|
|
int idx;
|
|
unsigned int bcnt;
|
|
template = match_std(id);
|
|
if (!template) return 0;
|
|
idx = std->index;
|
|
memcpy(std,template,sizeof(*template));
|
|
std->index = idx;
|
|
std->id = id;
|
|
bcnt = pvr2_std_id_to_str(std->name,sizeof(std->name)-1,id);
|
|
std->name[bcnt] = 0;
|
|
pvr2_trace(PVR2_TRACE_STD,"Set up standard idx=%u name=%s",
|
|
std->index,std->name);
|
|
return !0;
|
|
}
|
|
|
|
/* These are special cases of combined standards that we should enumerate
|
|
separately if the component pieces are present. */
|
|
static v4l2_std_id std_mixes[] = {
|
|
V4L2_STD_PAL_B | V4L2_STD_PAL_G,
|
|
V4L2_STD_PAL_D | V4L2_STD_PAL_K,
|
|
V4L2_STD_SECAM_B | V4L2_STD_SECAM_G,
|
|
V4L2_STD_SECAM_D | V4L2_STD_SECAM_K,
|
|
};
|
|
|
|
struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
|
|
v4l2_std_id id)
|
|
{
|
|
unsigned int std_cnt = 0;
|
|
unsigned int idx,bcnt,idx2;
|
|
v4l2_std_id idmsk,cmsk,fmsk;
|
|
struct v4l2_standard *stddefs;
|
|
|
|
if (pvrusb2_debug & PVR2_TRACE_STD) {
|
|
char buf[100];
|
|
bcnt = pvr2_std_id_to_str(buf,sizeof(buf),id);
|
|
pvr2_trace(
|
|
PVR2_TRACE_STD,"Mapping standards mask=0x%x (%.*s)",
|
|
(int)id,bcnt,buf);
|
|
}
|
|
|
|
*countptr = 0;
|
|
std_cnt = 0;
|
|
fmsk = 0;
|
|
for (idmsk = 1, cmsk = id; cmsk; idmsk <<= 1) {
|
|
if (!(idmsk & cmsk)) continue;
|
|
cmsk &= ~idmsk;
|
|
if (match_std(idmsk)) {
|
|
std_cnt++;
|
|
continue;
|
|
}
|
|
fmsk |= idmsk;
|
|
}
|
|
|
|
for (idx2 = 0; idx2 < ARRAY_SIZE(std_mixes); idx2++) {
|
|
if ((id & std_mixes[idx2]) == std_mixes[idx2]) std_cnt++;
|
|
}
|
|
|
|
/* Don't complain about ATSC standard values */
|
|
fmsk &= ~CSTD_ATSC;
|
|
|
|
if (fmsk) {
|
|
char buf[100];
|
|
bcnt = pvr2_std_id_to_str(buf,sizeof(buf),fmsk);
|
|
pvr2_trace(
|
|
PVR2_TRACE_ERROR_LEGS,
|
|
"WARNING:"
|
|
" Failed to classify the following standard(s): %.*s",
|
|
bcnt,buf);
|
|
}
|
|
|
|
pvr2_trace(PVR2_TRACE_STD,"Setting up %u unique standard(s)",
|
|
std_cnt);
|
|
if (!std_cnt) return NULL; // paranoia
|
|
|
|
stddefs = kzalloc(sizeof(struct v4l2_standard) * std_cnt,
|
|
GFP_KERNEL);
|
|
for (idx = 0; idx < std_cnt; idx++) stddefs[idx].index = idx;
|
|
|
|
idx = 0;
|
|
|
|
/* Enumerate potential special cases */
|
|
for (idx2 = 0; (idx2 < ARRAY_SIZE(std_mixes)) && (idx < std_cnt);
|
|
idx2++) {
|
|
if (!(id & std_mixes[idx2])) continue;
|
|
if (pvr2_std_fill(stddefs+idx,std_mixes[idx2])) idx++;
|
|
}
|
|
/* Now enumerate individual pieces */
|
|
for (idmsk = 1, cmsk = id; cmsk && (idx < std_cnt); idmsk <<= 1) {
|
|
if (!(idmsk & cmsk)) continue;
|
|
cmsk &= ~idmsk;
|
|
if (!pvr2_std_fill(stddefs+idx,idmsk)) continue;
|
|
idx++;
|
|
}
|
|
|
|
*countptr = std_cnt;
|
|
return stddefs;
|
|
}
|
|
|
|
v4l2_std_id pvr2_std_get_usable(void)
|
|
{
|
|
return CSTD_ALL;
|
|
}
|
|
|
|
|
|
/*
|
|
Stuff for Emacs to see, in order to encourage consistent editing style:
|
|
*** Local Variables: ***
|
|
*** mode: c ***
|
|
*** fill-column: 75 ***
|
|
*** tab-width: 8 ***
|
|
*** c-basic-offset: 8 ***
|
|
*** End: ***
|
|
*/
|