diff options
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-std.c')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-std.c | 411 |
1 files changed, 0 insertions, 411 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-std.c b/drivers/media/video/pvrusb2/pvrusb2-std.c deleted file mode 100644 index 453627b07833..000000000000 --- a/drivers/media/video/pvrusb2/pvrusb2-std.c +++ /dev/null @@ -1,411 +0,0 @@ -/* - * - * - * 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} - } -}; - -static struct v4l2_standard *match_std(v4l2_std_id id) -{ - unsigned int idx; - for (idx = 0; idx < ARRAY_SIZE(generic_standards); 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); - if (!stddefs) - return NULL; - - 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: *** - */ |