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OpenCloudOS-Kernel/drivers/media/video/cx18/cx18-controls.c

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/*
* cx18 ioctl control functions
*
* Derived from ivtv-controls.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
*
* 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, or
* (at your option) any later version.
*
* 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 <linux/kernel.h>
#include <linux/slab.h>
#include "cx18-driver.h"
#include "cx18-cards.h"
#include "cx18-ioctl.h"
#include "cx18-audio.h"
#include "cx18-mailbox.h"
#include "cx18-controls.h"
/* Must be sorted from low to high control ID! */
static const u32 user_ctrls[] = {
V4L2_CID_USER_CLASS,
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_AUDIO_VOLUME,
V4L2_CID_AUDIO_BALANCE,
V4L2_CID_AUDIO_BASS,
V4L2_CID_AUDIO_TREBLE,
V4L2_CID_AUDIO_MUTE,
V4L2_CID_AUDIO_LOUDNESS,
0
};
static const u32 *ctrl_classes[] = {
user_ctrls,
cx2341x_mpeg_ctrls,
NULL
};
int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
const char *name;
qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
if (qctrl->id == 0)
return -EINVAL;
switch (qctrl->id) {
/* Standard V4L2 controls */
case V4L2_CID_USER_CLASS:
return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_HUE:
case V4L2_CID_SATURATION:
case V4L2_CID_CONTRAST:
if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
return 0;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_AUDIO_LOUDNESS:
if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
return 0;
default:
if (cx2341x_ctrl_query(&cx->params, qctrl))
qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
return 0;
}
strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
qctrl->name[sizeof(qctrl->name) - 1] = 0;
return 0;
}
int cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
struct v4l2_queryctrl qctrl;
qctrl.id = qmenu->id;
cx18_queryctrl(file, fh, &qctrl);
return v4l2_ctrl_query_menu(qmenu, &qctrl,
cx2341x_ctrl_get_menu(&cx->params, qmenu->id));
}
static int cx18_try_ctrl(struct file *file, void *fh,
struct v4l2_ext_control *vctrl)
{
struct v4l2_queryctrl qctrl;
const char **menu_items = NULL;
int err;
qctrl.id = vctrl->id;
err = cx18_queryctrl(file, fh, &qctrl);
if (err)
return err;
if (qctrl.type == V4L2_CTRL_TYPE_MENU)
menu_items = v4l2_ctrl_get_menu(qctrl.id);
return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
}
static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
{
switch (vctrl->id) {
/* Standard V4L2 controls */
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_HUE:
case V4L2_CID_SATURATION:
case V4L2_CID_CONTRAST:
return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_AUDIO_LOUDNESS:
return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
default:
CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
return -EINVAL;
}
return 0;
}
static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
{
switch (vctrl->id) {
/* Standard V4L2 controls */
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_HUE:
case V4L2_CID_SATURATION:
case V4L2_CID_CONTRAST:
return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_AUDIO_LOUDNESS:
return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
default:
CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
return -EINVAL;
}
return 0;
}
static int cx18_setup_vbi_fmt(struct cx18 *cx,
enum v4l2_mpeg_stream_vbi_fmt fmt,
enum v4l2_mpeg_stream_type type)
{
if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
return -EINVAL;
if (atomic_read(&cx->ana_capturing) > 0)
return -EBUSY;
if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
!(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
/* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
"the MPEG stream\n");
return 0;
}
/* Allocate sliced VBI buffers if needed. */
if (cx->vbi.sliced_mpeg_data[0] == NULL) {
int i;
for (i = 0; i < CX18_VBI_FRAMES; i++) {
cx->vbi.sliced_mpeg_data[i] =
kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
if (cx->vbi.sliced_mpeg_data[i] == NULL) {
while (--i >= 0) {
kfree(cx->vbi.sliced_mpeg_data[i]);
cx->vbi.sliced_mpeg_data[i] = NULL;
}
cx->vbi.insert_mpeg =
V4L2_MPEG_STREAM_VBI_FMT_NONE;
CX18_WARN("Unable to allocate buffers for "
"sliced VBI data insertion\n");
return -ENOMEM;
}
}
}
cx->vbi.insert_mpeg = fmt;
CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
"when sliced VBI is enabled\n");
/*
* If our current settings have no lines set for capture, store a valid,
* default set of service lines to capture, in our current settings.
*/
if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
if (cx->is_60hz)
cx->vbi.sliced_in->service_set =
V4L2_SLICED_CAPTION_525;
else
cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
}
return 0;
}
int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
struct v4l2_control ctrl;
if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
int i;
int err = 0;
for (i = 0; i < c->count; i++) {
ctrl.id = c->controls[i].id;
ctrl.value = c->controls[i].value;
err = cx18_g_ctrl(cx, &ctrl);
c->controls[i].value = ctrl.value;
if (err) {
c->error_idx = i;
break;
}
}
return err;
}
if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
return -EINVAL;
}
int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
struct cx18_open_id *id = fh;
struct cx18 *cx = id->cx;
int ret;
struct v4l2_control ctrl;
ret = v4l2_prio_check(&cx->prio, id->prio);
if (ret)
return ret;
if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
int i;
int err = 0;
for (i = 0; i < c->count; i++) {
ctrl.id = c->controls[i].id;
ctrl.value = c->controls[i].value;
err = cx18_s_ctrl(cx, &ctrl);
c->controls[i].value = ctrl.value;
if (err) {
c->error_idx = i;
break;
}
}
return err;
}
if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
static u32 freqs[3] = { 44100, 48000, 32000 };
struct cx18_api_func_private priv;
struct cx2341x_mpeg_params p = cx->params;
int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
c, VIDIOC_S_EXT_CTRLS);
unsigned int idx;
if (err)
return err;
if (p.video_encoding != cx->params.video_encoding) {
int is_mpeg1 = p.video_encoding ==
V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
struct v4l2_mbus_framefmt fmt;
/* fix videodecoder resolution */
fmt.width = cx->params.width / (is_mpeg1 ? 2 : 1);
fmt.height = cx->params.height;
fmt.code = V4L2_MBUS_FMT_FIXED;
v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &fmt);
}
priv.cx = cx;
priv.s = &cx->streams[id->type];
err = cx2341x_update(&priv, cx18_api_func, &cx->params, &p);
if (!err &&
(cx->params.stream_vbi_fmt != p.stream_vbi_fmt ||
cx->params.stream_type != p.stream_type))
err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt,
p.stream_type);
cx->params = p;
cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
idx = p.audio_properties & 0x03;
/* The audio clock of the digitizer must match the codec sample
rate otherwise you get some very strange effects. */
if (idx < ARRAY_SIZE(freqs))
cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
return err;
}
return -EINVAL;
}
int cx18_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
int i;
int err = 0;
for (i = 0; i < c->count; i++) {
err = cx18_try_ctrl(file, fh, &c->controls[i]);
if (err) {
c->error_idx = i;
break;
}
}
return err;
}
if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
return cx2341x_ext_ctrls(&cx->params,
atomic_read(&cx->ana_capturing),
c, VIDIOC_TRY_EXT_CTRLS);
return -EINVAL;
}
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