aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/ivtv/ivtv-controls.c
blob: 4a9c8ce0ecb307cc07d167a0c6685bcd3583fefe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*
    ioctl control functions
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2005-2007  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 "ivtv-driver.h"
#include "ivtv-cards.h"
#include "ivtv-ioctl.h"
#include "ivtv-routing.h"
#include "ivtv-i2c.h"
#include "ivtv-mailbox.h"
#include "ivtv-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 ivtv_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	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(itv->sd_video, 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(itv->sd_audio, core, queryctrl, qctrl))
			qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
		return 0;

	default:
		if (cx2341x_ctrl_query(&itv->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 ivtv_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	struct v4l2_queryctrl qctrl;

	qctrl.id = qmenu->id;
	ivtv_queryctrl(file, fh, &qctrl);
	return v4l2_ctrl_query_menu(qmenu, &qctrl,
			cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
}

static int ivtv_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 = ivtv_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 ivtv_s_ctrl(struct ivtv *itv, 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(itv->sd_video, 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(itv->sd_audio, core, s_ctrl, vctrl);

	default:
		IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_g_ctrl(struct ivtv *itv, 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(itv->sd_video, 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(itv->sd_audio, core, g_ctrl, vctrl);
	default:
		IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
{
	if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
		return -EINVAL;
	if (atomic_read(&itv->capturing) > 0)
		return -EBUSY;

	/* First try to allocate sliced VBI buffers if needed. */
	if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
		int i;

		for (i = 0; i < IVTV_VBI_FRAMES; i++) {
			/* Yuck, hardcoded. Needs to be a define */
			itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
			if (itv->vbi.sliced_mpeg_data[i] == NULL) {
				while (--i >= 0) {
					kfree(itv->vbi.sliced_mpeg_data[i]);
					itv->vbi.sliced_mpeg_data[i] = NULL;
				}
				return -ENOMEM;
			}
		}
	}

	itv->vbi.insert_mpeg = fmt;

	if (itv->vbi.insert_mpeg == 0) {
		return 0;
	}
	/* Need sliced data for mpeg insertion */
	if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
		if (itv->is_60hz)
			itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
		else
			itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
		ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
	}
	return 0;
}

int ivtv_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	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 = ivtv_g_ctrl(itv, &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(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
	return -EINVAL;
}

int ivtv_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	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 = ivtv_s_ctrl(itv, &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 cx2341x_mpeg_params p = itv->params;
		int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
		unsigned idx;

		if (err)
			return err;

		if (p.video_encoding != itv->params.video_encoding) {
			int is_mpeg1 = p.video_encoding ==
				V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
			struct v4l2_format fmt;

			/* fix videodecoder resolution */
			fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
			fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
			fmt.fmt.pix.height = itv->params.height;
			v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
		}
		err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
		if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
			err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
		itv->params = p;
		itv->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))
			ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
		return err;
	}
	return -EINVAL;
}

int ivtv_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;

	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
		int i;
		int err = 0;

		for (i = 0; i < c->count; i++) {
			err = ivtv_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(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
	return -EINVAL;
}