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easycap_ioctl.c
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easycap_ioctl.c
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/******************************************************************************
* *
* easycap_ioctl.c *
* *
******************************************************************************/
/*
*
* Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
*
*
* This 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, or
* (at your option) any later version.
*
* The software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*****************************************************************************/
#include <linux/version.h>
#include "easycap.h"
/*--------------------------------------------------------------------------*/
/*
* UNLESS THERE IS A PREMATURE ERROR RETURN THIS ROUTINE UPDATES THE
* FOLLOWING:
* peasycap->standard_offset
* peasycap->inputset[peasycap->input].standard_offset
* peasycap->fps
* peasycap->usec
* peasycap->tolerate
* peasycap->skip
*/
/*---------------------------------------------------------------------------*/
int adjust_standard(struct easycap *peasycap, v4l2_std_id std_id)
{
struct easycap_standard const *peasycap_standard;
u16 reg, set;
int ir, rc, need, k;
unsigned int itwas, isnow;
bool resubmit;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
peasycap_standard = &easycap_standard[0];
while (0xFFFF != peasycap_standard->mask) {
if (std_id == peasycap_standard->v4l2_standard.id)
break;
peasycap_standard++;
}
if (0xFFFF == peasycap_standard->mask) {
peasycap_standard = &easycap_standard[0];
while (0xFFFF != peasycap_standard->mask) {
if (std_id & peasycap_standard->v4l2_standard.id)
break;
peasycap_standard++;
}
}
if (0xFFFF == peasycap_standard->mask) {
SAM("ERROR: 0x%08X=std_id: standard not found\n",
(unsigned int)std_id);
return -EINVAL;
}
SAM("selected standard: %s\n",
&(peasycap_standard->v4l2_standard.name[0]));
if (peasycap->standard_offset == peasycap_standard - easycap_standard) {
SAM("requested standard already in effect\n");
return 0;
}
peasycap->standard_offset = peasycap_standard - easycap_standard;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].standard_offset_ok) {
peasycap->inputset[k].standard_offset =
peasycap->standard_offset;
}
}
if ((0 <= peasycap->input) && (INPUT_MANY > peasycap->input)) {
peasycap->inputset[peasycap->input].standard_offset =
peasycap->standard_offset;
peasycap->inputset[peasycap->input].standard_offset_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
peasycap->fps = peasycap_standard->v4l2_standard.frameperiod.denominator /
peasycap_standard->v4l2_standard.frameperiod.numerator;
switch (peasycap->fps) {
case 6:
case 30: {
peasycap->ntsc = true;
break;
}
case 5:
case 25: {
peasycap->ntsc = false;
break;
}
default: {
SAM("MISTAKE: %i=frames-per-second\n", peasycap->fps);
return -ENOENT;
}
}
JOM(8, "%i frames-per-second\n", peasycap->fps);
if (0x8000 & peasycap_standard->mask) {
peasycap->skip = 5;
peasycap->usec = 1000000 / (2 * (5 * peasycap->fps));
peasycap->tolerate = 1000 * (25 / (5 * peasycap->fps));
} else {
peasycap->skip = 0;
peasycap->usec = 1000000 / (2 * peasycap->fps);
peasycap->tolerate = 1000 * (25 / peasycap->fps);
}
if (peasycap->video_isoc_streaming) {
resubmit = true;
kill_video_urbs(peasycap);
} else
resubmit = false;
/*--------------------------------------------------------------------------*/
/*
* SAA7113H DATASHEET PAGE 44, TABLE 42
*/
/*--------------------------------------------------------------------------*/
need = 0;
itwas = 0;
reg = 0x00;
set = 0x00;
switch (peasycap_standard->mask & 0x000F) {
case NTSC_M_JP: {
reg = 0x0A;
set = 0x95;
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: cannot read SAA register 0x%02X\n", reg);
else
itwas = (unsigned int)ir;
rc = write_saa(peasycap->pusb_device, reg, set);
if (rc)
SAM("ERROR: failed to set SAA register "
"0x%02X to 0x%02X for JP standard\n", reg, set);
else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed "
"to 0x%02X\n", reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
reg = 0x0B;
set = 0x48;
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: cannot read SAA register 0x%02X\n", reg);
else
itwas = (unsigned int)ir;
rc = write_saa(peasycap->pusb_device, reg, set);
if (rc)
SAM("ERROR: failed to set SAA register 0x%02X to 0x%02X "
"for JP standard\n", reg, set);
else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed "
"to 0x%02X\n", reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
/*--------------------------------------------------------------------------*/
/*
* NOTE: NO break HERE: RUN ON TO NEXT CASE
*/
/*--------------------------------------------------------------------------*/
}
case NTSC_M:
case PAL_BGHIN: {
reg = 0x0E;
set = 0x01;
need = 1;
break;
}
case NTSC_N_443:
case PAL_60: {
reg = 0x0E;
set = 0x11;
need = 1;
break;
}
case NTSC_443:
case PAL_Nc: {
reg = 0x0E;
set = 0x21;
need = 1;
break;
}
case NTSC_N:
case PAL_M: {
reg = 0x0E;
set = 0x31;
need = 1;
break;
}
case SECAM: {
reg = 0x0E;
set = 0x51;
need = 1;
break;
}
default:
break;
}
/*--------------------------------------------------------------------------*/
if (need) {
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: failed to read SAA register 0x%02X\n", reg);
else
itwas = (unsigned int)ir;
rc = write_saa(peasycap->pusb_device, reg, set);
if (0 != write_saa(peasycap->pusb_device, reg, set)) {
SAM("ERROR: failed to set SAA register "
"0x%02X to 0x%02X for table 42\n", reg, set);
} else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed "
"to 0x%02X\n", reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
}
/*--------------------------------------------------------------------------*/
/*
* SAA7113H DATASHEET PAGE 41
*/
/*--------------------------------------------------------------------------*/
reg = 0x08;
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: failed to read SAA register 0x%02X "
"so cannot reset\n", reg);
else {
itwas = (unsigned int)ir;
if (peasycap_standard->mask & 0x0001)
set = itwas | 0x40 ;
else
set = itwas & ~0x40 ;
rc = write_saa(peasycap->pusb_device, reg, set);
if (rc)
SAM("ERROR: failed to set SAA register 0x%02X to 0x%02X\n",
reg, set);
else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed to 0x%02X\n",
reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
}
/*--------------------------------------------------------------------------*/
/*
* SAA7113H DATASHEET PAGE 51, TABLE 57
*/
/*---------------------------------------------------------------------------*/
reg = 0x40;
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: failed to read SAA register 0x%02X "
"so cannot reset\n", reg);
else {
itwas = (unsigned int)ir;
if (peasycap_standard->mask & 0x0001)
set = itwas | 0x80 ;
else
set = itwas & ~0x80 ;
rc = write_saa(peasycap->pusb_device, reg, set);
if (rc)
SAM("ERROR: failed to set SAA register 0x%02X to 0x%02X\n",
reg, set);
else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed to 0x%02X\n",
reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
}
/*--------------------------------------------------------------------------*/
/*
* SAA7113H DATASHEET PAGE 53, TABLE 66
*/
/*--------------------------------------------------------------------------*/
reg = 0x5A;
ir = read_saa(peasycap->pusb_device, reg);
if (0 > ir)
SAM("ERROR: failed to read SAA register 0x%02X but continuing\n", reg);
itwas = (unsigned int)ir;
if (peasycap_standard->mask & 0x0001)
set = 0x0A ;
else
set = 0x07 ;
if (0 != write_saa(peasycap->pusb_device, reg, set))
SAM("ERROR: failed to set SAA register 0x%02X to 0x%02X\n",
reg, set);
else {
isnow = (unsigned int)read_saa(peasycap->pusb_device, reg);
if (0 > ir)
JOM(8, "SAA register 0x%02X changed "
"to 0x%02X\n", reg, isnow);
else
JOM(8, "SAA register 0x%02X changed "
"from 0x%02X to 0x%02X\n", reg, itwas, isnow);
}
if (resubmit)
submit_video_urbs(peasycap);
return 0;
}
/*****************************************************************************/
/*--------------------------------------------------------------------------*/
/*
* THE ALGORITHM FOR RESPONDING TO THE VIDIO_S_FMT IOCTL REQUIRES
* A VALID VALUE OF peasycap->standard_offset, OTHERWISE -EBUSY IS RETURNED.
*
* PROVIDED THE ARGUMENT try IS false AND THERE IS NO PREMATURE ERROR RETURN
* THIS ROUTINE UPDATES THE FOLLOWING:
* peasycap->format_offset
* peasycap->inputset[peasycap->input].format_offset
* peasycap->pixelformat
* peasycap->height
* peasycap->width
* peasycap->bytesperpixel
* peasycap->byteswaporder
* peasycap->decimatepixel
* peasycap->frame_buffer_used
* peasycap->videofieldamount
* peasycap->offerfields
*
* IF SUCCESSFUL THE FUNCTION RETURNS THE OFFSET IN easycap_format[]
* IDENTIFYING THE FORMAT WHICH IS TO RETURNED TO THE USER.
* ERRORS RETURN A NEGATIVE NUMBER.
*/
/*--------------------------------------------------------------------------*/
int adjust_format(struct easycap *peasycap,
u32 width, u32 height, u32 pixelformat, int field, bool try)
{
struct easycap_format *peasycap_format, *peasycap_best_format;
u16 mask;
struct usb_device *p;
int miss, multiplier, best, k;
char bf[5], fo[32], *pc;
u32 uc;
bool resubmit;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (0 > peasycap->standard_offset) {
JOM(8, "%i=peasycap->standard_offset\n", peasycap->standard_offset);
return -EBUSY;
}
p = peasycap->pusb_device;
if (!p) {
SAM("ERROR: peaycap->pusb_device is NULL\n");
return -EFAULT;
}
pc = &bf[0];
uc = pixelformat;
memcpy((void *)pc, (void *)(&uc), 4);
bf[4] = 0;
mask = 0xFF & easycap_standard[peasycap->standard_offset].mask;
SAM("sought: %ix%i,%s(0x%08X),%i=field,0x%02X=std mask\n",
width, height, pc, pixelformat, field, mask);
switch (field) {
case V4L2_FIELD_ANY: {
strcpy(&fo[0], "V4L2_FIELD_ANY ");
break;
}
case V4L2_FIELD_NONE: {
strcpy(&fo[0], "V4L2_FIELD_NONE");
break;
}
case V4L2_FIELD_TOP: {
strcpy(&fo[0], "V4L2_FIELD_TOP");
break;
}
case V4L2_FIELD_BOTTOM: {
strcpy(&fo[0], "V4L2_FIELD_BOTTOM");
break;
}
case V4L2_FIELD_INTERLACED: {
strcpy(&fo[0], "V4L2_FIELD_INTERLACED");
break;
}
case V4L2_FIELD_SEQ_TB: {
strcpy(&fo[0], "V4L2_FIELD_SEQ_TB");
break;
}
case V4L2_FIELD_SEQ_BT: {
strcpy(&fo[0], "V4L2_FIELD_SEQ_BT");
break;
}
case V4L2_FIELD_ALTERNATE: {
strcpy(&fo[0], "V4L2_FIELD_ALTERNATE");
break;
}
case V4L2_FIELD_INTERLACED_TB: {
strcpy(&fo[0], "V4L2_FIELD_INTERLACED_TB");
break;
}
case V4L2_FIELD_INTERLACED_BT: {
strcpy(&fo[0], "V4L2_FIELD_INTERLACED_BT");
break;
}
default: {
strcpy(&fo[0], "V4L2_FIELD_... UNKNOWN ");
break;
}
}
SAM("sought: %s\n", &fo[0]);
if (V4L2_FIELD_ANY == field) {
field = V4L2_FIELD_NONE;
SAM("prefer: V4L2_FIELD_NONE=field, was V4L2_FIELD_ANY\n");
}
peasycap_best_format = NULL;
peasycap_format = &easycap_format[0];
while (0 != peasycap_format->v4l2_format.fmt.pix.width) {
JOM(16, ".> %i %i 0x%08X %ix%i\n",
peasycap_format->mask & 0x01,
peasycap_format->v4l2_format.fmt.pix.field,
peasycap_format->v4l2_format.fmt.pix.pixelformat,
peasycap_format->v4l2_format.fmt.pix.width,
peasycap_format->v4l2_format.fmt.pix.height);
if (((peasycap_format->mask & 0x1F) == (mask & 0x1F)) &&
(peasycap_format->v4l2_format.fmt.pix.field == field) &&
(peasycap_format->v4l2_format.fmt.pix.pixelformat == pixelformat) &&
(peasycap_format->v4l2_format.fmt.pix.width == width) &&
(peasycap_format->v4l2_format.fmt.pix.height == height)) {
peasycap_best_format = peasycap_format;
break;
}
peasycap_format++;
}
if (0 == peasycap_format->v4l2_format.fmt.pix.width) {
SAM("cannot do: %ix%i with standard mask 0x%02X\n",
width, height, mask);
peasycap_format = &easycap_format[0];
best = -1;
while (0 != peasycap_format->v4l2_format.fmt.pix.width) {
if (((peasycap_format->mask & 0x1F) == (mask & 0x1F)) &&
(peasycap_format->v4l2_format.fmt.pix.field == field) &&
(peasycap_format->v4l2_format.fmt.pix.pixelformat == pixelformat)) {
miss = abs(peasycap_format->v4l2_format.fmt.pix.width - width);
if ((best > miss) || (best < 0)) {
best = miss;
peasycap_best_format = peasycap_format;
if (!miss)
break;
}
}
peasycap_format++;
}
if (-1 == best) {
SAM("cannot do %ix... with standard mask 0x%02X\n",
width, mask);
SAM("cannot do ...x%i with standard mask 0x%02X\n",
height, mask);
SAM(" %ix%i unmatched\n", width, height);
return peasycap->format_offset;
}
}
if (!peasycap_best_format) {
SAM("MISTAKE: peasycap_best_format is NULL");
return -EINVAL;
}
peasycap_format = peasycap_best_format;
/*...........................................................................*/
if (try)
return peasycap_best_format - easycap_format;
/*...........................................................................*/
if (false != try) {
SAM("MISTAKE: true==try where is should be false\n");
return -EINVAL;
}
SAM("actioning: %ix%i %s\n",
peasycap_format->v4l2_format.fmt.pix.width,
peasycap_format->v4l2_format.fmt.pix.height,
&peasycap_format->name[0]);
peasycap->height = peasycap_format->v4l2_format.fmt.pix.height;
peasycap->width = peasycap_format->v4l2_format.fmt.pix.width;
peasycap->pixelformat = peasycap_format->v4l2_format.fmt.pix.pixelformat;
peasycap->format_offset = peasycap_format - easycap_format;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].format_offset_ok) {
peasycap->inputset[k].format_offset =
peasycap->format_offset;
}
}
if ((0 <= peasycap->input) && (INPUT_MANY > peasycap->input)) {
peasycap->inputset[peasycap->input].format_offset =
peasycap->format_offset;
peasycap->inputset[peasycap->input].format_offset_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
peasycap->bytesperpixel = (0x00E0 & peasycap_format->mask) >> 5 ;
if (0x0100 & peasycap_format->mask)
peasycap->byteswaporder = true;
else
peasycap->byteswaporder = false;
if (0x0200 & peasycap_format->mask)
peasycap->skip = 5;
else
peasycap->skip = 0;
if (0x0800 & peasycap_format->mask)
peasycap->decimatepixel = true;
else
peasycap->decimatepixel = false;
if (0x1000 & peasycap_format->mask)
peasycap->offerfields = true;
else
peasycap->offerfields = false;
if (peasycap->decimatepixel)
multiplier = 2;
else
multiplier = 1;
peasycap->videofieldamount =
multiplier * peasycap->width * multiplier * peasycap->height;
peasycap->frame_buffer_used =
peasycap->bytesperpixel * peasycap->width * peasycap->height;
if (peasycap->video_isoc_streaming) {
resubmit = true;
kill_video_urbs(peasycap);
} else
resubmit = false;
/*---------------------------------------------------------------------------*/
/*
* PAL
*/
/*---------------------------------------------------------------------------*/
if (0 == (0x01 & peasycap_format->mask)) {
if (((720 == peasycap_format->v4l2_format.fmt.pix.width) &&
(576 == peasycap_format->v4l2_format.fmt.pix.height)) ||
((360 == peasycap_format->v4l2_format.fmt.pix.width) &&
(288 == peasycap_format->v4l2_format.fmt.pix.height))) {
if (set_resolution(p, 0x0000, 0x0001, 0x05A0, 0x0121)) {
SAM("ERROR: set_resolution() failed\n");
return -EINVAL;
}
} else if ((704 == peasycap_format->v4l2_format.fmt.pix.width) &&
(576 == peasycap_format->v4l2_format.fmt.pix.height)) {
if (set_resolution(p, 0x0004, 0x0001, 0x0584, 0x0121)) {
SAM("ERROR: set_resolution() failed\n");
return -EINVAL;
}
} else if (((640 == peasycap_format->v4l2_format.fmt.pix.width) &&
(480 == peasycap_format->v4l2_format.fmt.pix.height)) ||
((320 == peasycap_format->v4l2_format.fmt.pix.width) &&
(240 == peasycap_format->v4l2_format.fmt.pix.height))) {
if (set_resolution(p, 0x0014, 0x0020, 0x0514, 0x0110)) {
SAM("ERROR: set_resolution() failed\n");
return -EINVAL;
}
} else {
SAM("MISTAKE: bad format, cannot set resolution\n");
return -EINVAL;
}
/*---------------------------------------------------------------------------*/
/*
* NTSC
*/
/*---------------------------------------------------------------------------*/
} else {
if (((720 == peasycap_format->v4l2_format.fmt.pix.width) &&
(480 == peasycap_format->v4l2_format.fmt.pix.height)) ||
((360 == peasycap_format->v4l2_format.fmt.pix.width) &&
(240 == peasycap_format->v4l2_format.fmt.pix.height))) {
if (set_resolution(p, 0x0000, 0x0003, 0x05A0, 0x00F3)) {
SAM("ERROR: set_resolution() failed\n");
return -EINVAL;
}
} else if (((640 == peasycap_format->v4l2_format.fmt.pix.width) &&
(480 == peasycap_format->v4l2_format.fmt.pix.height)) ||
((320 == peasycap_format->v4l2_format.fmt.pix.width) &&
(240 == peasycap_format->v4l2_format.fmt.pix.height))) {
if (set_resolution(p, 0x0014, 0x0003, 0x0514, 0x00F3)) {
SAM("ERROR: set_resolution() failed\n");
return -EINVAL;
}
} else {
SAM("MISTAKE: bad format, cannot set resolution\n");
return -EINVAL;
}
}
/*---------------------------------------------------------------------------*/
if (resubmit)
submit_video_urbs(peasycap);
return peasycap_best_format - easycap_format;
}
/*****************************************************************************/
int adjust_brightness(struct easycap *peasycap, int value)
{
unsigned int mood;
int i1, k;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_BRIGHTNESS == easycap_control[i1].id) {
if ((easycap_control[i1].minimum > value) ||
(easycap_control[i1].maximum < value))
value = easycap_control[i1].default_value;
if ((easycap_control[i1].minimum <= peasycap->brightness) &&
(easycap_control[i1].maximum >= peasycap->brightness)) {
if (peasycap->brightness == value) {
SAM("unchanged brightness at 0x%02X\n",
value);
return 0;
}
}
peasycap->brightness = value;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].brightness_ok)
peasycap->inputset[k].brightness =
peasycap->brightness;
}
if ((0 <= peasycap->input) && (INPUT_MANY > peasycap->input)) {
peasycap->inputset[peasycap->input].brightness =
peasycap->brightness;
peasycap->inputset[peasycap->input].brightness_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
mood = 0x00FF & (unsigned int)peasycap->brightness;
if (!write_saa(peasycap->pusb_device, 0x0A, mood)) {
SAM("adjusting brightness to 0x%02X\n", mood);
return 0;
} else {
SAM("WARNING: failed to adjust brightness "
"to 0x%02X\n", mood);
return -ENOENT;
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust brightness: control not found\n");
return -ENOENT;
}
/*****************************************************************************/
int adjust_contrast(struct easycap *peasycap, int value)
{
unsigned int mood;
int i1, k;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_CONTRAST == easycap_control[i1].id) {
if ((easycap_control[i1].minimum > value) ||
(easycap_control[i1].maximum < value))
value = easycap_control[i1].default_value;
if ((easycap_control[i1].minimum <= peasycap->contrast) &&
(easycap_control[i1].maximum >= peasycap->contrast)) {
if (peasycap->contrast == value) {
SAM("unchanged contrast at 0x%02X\n", value);
return 0;
}
}
peasycap->contrast = value;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].contrast_ok)
peasycap->inputset[k].contrast = peasycap->contrast;
}
if ((0 <= peasycap->input) && (INPUT_MANY > peasycap->input)) {
peasycap->inputset[peasycap->input].contrast =
peasycap->contrast;
peasycap->inputset[peasycap->input].contrast_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
mood = 0x00FF & (unsigned int) (peasycap->contrast - 128);
if (!write_saa(peasycap->pusb_device, 0x0B, mood)) {
SAM("adjusting contrast to 0x%02X\n", mood);
return 0;
} else {
SAM("WARNING: failed to adjust contrast to "
"0x%02X\n", mood);
return -ENOENT;
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust contrast: control not found\n");
return -ENOENT;
}
/*****************************************************************************/
int adjust_saturation(struct easycap *peasycap, int value)
{
unsigned int mood;
int i1, k;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_SATURATION == easycap_control[i1].id) {
if ((easycap_control[i1].minimum > value) ||
(easycap_control[i1].maximum < value))
value = easycap_control[i1].default_value;
if ((easycap_control[i1].minimum <= peasycap->saturation) &&
(easycap_control[i1].maximum >= peasycap->saturation)) {
if (peasycap->saturation == value) {
SAM("unchanged saturation at 0x%02X\n",
value);
return 0;
}
}
peasycap->saturation = value;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].saturation_ok)
peasycap->inputset[k].saturation =
peasycap->saturation;
}
if ((0 <= peasycap->input) && (INPUT_MANY > peasycap->input)) {
peasycap->inputset[peasycap->input].saturation =
peasycap->saturation;
peasycap->inputset[peasycap->input].saturation_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
mood = 0x00FF & (unsigned int) (peasycap->saturation - 128);
if (!write_saa(peasycap->pusb_device, 0x0C, mood)) {
SAM("adjusting saturation to 0x%02X\n", mood);
return 0;
} else {
SAM("WARNING: failed to adjust saturation to "
"0x%02X\n", mood);
return -ENOENT;
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust saturation: control not found\n");
return -ENOENT;
}
/*****************************************************************************/
int adjust_hue(struct easycap *peasycap, int value)
{
unsigned int mood;
int i1, i2, k;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_HUE == easycap_control[i1].id) {
if ((easycap_control[i1].minimum > value) ||
(easycap_control[i1].maximum < value))
value = easycap_control[i1].default_value;
if ((easycap_control[i1].minimum <= peasycap->hue) &&
(easycap_control[i1].maximum >= peasycap->hue)) {
if (peasycap->hue == value) {
SAM("unchanged hue at 0x%02X\n", value);
return 0;
}
}
peasycap->hue = value;
for (k = 0; k < INPUT_MANY; k++) {
if (!peasycap->inputset[k].hue_ok)
peasycap->inputset[k].hue = peasycap->hue;
}
if (0 <= peasycap->input && INPUT_MANY > peasycap->input) {
peasycap->inputset[peasycap->input].hue = peasycap->hue;
peasycap->inputset[peasycap->input].hue_ok = 1;
} else
JOM(8, "%i=peasycap->input\n", peasycap->input);
i2 = peasycap->hue - 128;
mood = 0x00FF & ((int) i2);
if (!write_saa(peasycap->pusb_device, 0x0D, mood)) {
SAM("adjusting hue to 0x%02X\n", mood);
return 0;
} else {
SAM("WARNING: failed to adjust hue to 0x%02X\n", mood);
return -ENOENT;
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust hue: control not found\n");
return -ENOENT;
}
/*****************************************************************************/
int adjust_volume(struct easycap *peasycap, int value)
{
s8 mood;
int i1;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_AUDIO_VOLUME == easycap_control[i1].id) {
if ((easycap_control[i1].minimum > value) ||
(easycap_control[i1].maximum < value))
value = easycap_control[i1].default_value;
if ((easycap_control[i1].minimum <= peasycap->volume) &&
(easycap_control[i1].maximum >= peasycap->volume)) {
if (peasycap->volume == value) {
SAM("unchanged volume at 0x%02X\n", value);
return 0;
}
}
peasycap->volume = value;
mood = (16 > peasycap->volume) ? 16 :
((31 < peasycap->volume) ? 31 :
(s8) peasycap->volume);
if (!audio_gainset(peasycap->pusb_device, mood)) {
SAM("adjusting volume to 0x%02X\n", mood);
return 0;
} else {
SAM("WARNING: failed to adjust volume to "
"0x%2X\n", mood);
return -ENOENT;
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust volume: control not found\n");
return -ENOENT;
}
/*****************************************************************************/
/*---------------------------------------------------------------------------*/
/*
* AN ALTERNATIVE METHOD OF MUTING MIGHT SEEM TO BE:
* usb_set_interface(peasycap->pusb_device,
* peasycap->audio_interface,
* peasycap->audio_altsetting_off);
* HOWEVER, AFTER THIS COMMAND IS ISSUED ALL SUBSEQUENT URBS RECEIVE STATUS
* -ESHUTDOWN. THE HANDLER ROUTINE easyxxx_complete() DECLINES TO RESUBMIT
* THE URB AND THE PIPELINE COLLAPSES IRRETRIEVABLY. BEWARE.
*/
/*---------------------------------------------------------------------------*/
static int adjust_mute(struct easycap *peasycap, int value)
{
int i1;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -EFAULT;
}
if (!peasycap->pusb_device) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
i1 = 0;
while (0xFFFFFFFF != easycap_control[i1].id) {
if (V4L2_CID_AUDIO_MUTE == easycap_control[i1].id) {
peasycap->mute = value;
switch (peasycap->mute) {
case 1: {
peasycap->audio_idle = 1;
SAM("adjusting mute: %i=peasycap->audio_idle\n",
peasycap->audio_idle);
return 0;
}
default: {
peasycap->audio_idle = 0;
SAM("adjusting mute: %i=peasycap->audio_idle\n",
peasycap->audio_idle);
return 0;
}
}
break;
}
i1++;
}
SAM("WARNING: failed to adjust mute: control not found\n");
return -ENOENT;
}
/*---------------------------------------------------------------------------*/
long easycap_unlocked_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct easycap *peasycap;
struct usb_device *p;
int kd;
if (!file) {
SAY("ERROR: file is NULL\n");
return -ERESTARTSYS;
}
peasycap = file->private_data;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return -1;
}
p = peasycap->pusb_device;
if (!p) {
SAM("ERROR: peasycap->pusb_device is NULL\n");
return -EFAULT;
}
kd = isdongle(peasycap);
if (0 <= kd && DONGLE_MANY > kd) {
if (mutex_lock_interruptible(&easycapdc60_dongle[kd].mutex_video)) {
SAY("ERROR: cannot lock "
"easycapdc60_dongle[%i].mutex_video\n", kd);
return -ERESTARTSYS;
}
JOM(4, "locked easycapdc60_dongle[%i].mutex_video\n", kd);
/*---------------------------------------------------------------------------*/
/*
* MEANWHILE, easycap_usb_disconnect() MAY HAVE FREED POINTER peasycap,
* IN WHICH CASE A REPEAT CALL TO isdongle() WILL FAIL.
* IF NECESSARY, BAIL OUT.
*/
/*---------------------------------------------------------------------------*/
if (kd != isdongle(peasycap))
return -ERESTARTSYS;
if (!file) {
SAY("ERROR: file is NULL\n");
mutex_unlock(&easycapdc60_dongle[kd].mutex_video);
return -ERESTARTSYS;
}
peasycap = file->private_data;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
mutex_unlock(&easycapdc60_dongle[kd].mutex_video);
return -ERESTARTSYS;