diff options
Diffstat (limited to 'drivers/media/usb/pvrusb2/pvrusb2-std.c')
| -rw-r--r-- | drivers/media/usb/pvrusb2/pvrusb2-std.c | 195 |
1 files changed, 1 insertions, 194 deletions
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-std.c b/drivers/media/usb/pvrusb2/pvrusb2-std.c index 453627b07833..81c994e62241 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-std.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-std.c @@ -1,21 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * - * * 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" @@ -226,186 +212,7 @@ unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize, } -// 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: *** - */ |