summaryrefslogtreecommitdiff
path: root/drivers/media/pci/cx18/cx18-controls.c
blob: 812a2507945ae27fe931453d85f193ef9898e17a (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
/*
 *  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"

static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
	int type = cxhdl->stream_type->val;

	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;
}

static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
	int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
	struct v4l2_subdev_format format = {
		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
	};
	struct v4l2_mbus_framefmt *fmt = &format.format;

	/* fix videodecoder resolution */
	fmt->width = cxhdl->width / (is_mpeg1 ? 2 : 1);
	fmt->height = cxhdl->height;
	fmt->code = MEDIA_BUS_FMT_FIXED;
	v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
	return 0;
}

static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
{
	static const u32 freqs[3] = { 44100, 48000, 32000 };
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);

	/* 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 0;
}

static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);

	cx->dualwatch_stereo_mode = val;
	return 0;
}

const struct cx2341x_handler_ops cx18_cxhdl_ops = {
	.s_audio_mode = cx18_s_audio_mode,
	.s_audio_sampling_freq = cx18_s_audio_sampling_freq,
	.s_video_encoding = cx18_s_video_encoding,
	.s_stream_vbi_fmt = cx18_s_stream_vbi_fmt,
};