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/*
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 "ivtv-driver.h"
#include "ivtv-ioctl.h"
#include "ivtv-controls.h"
static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
{
struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
/* 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;
}
static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
{
struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
struct v4l2_mbus_framefmt fmt;
/* fix videodecoder resolution */
fmt.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
fmt.height = cxhdl->height;
fmt.code = V4L2_MBUS_FMT_FIXED;
v4l2_subdev_call(itv->sd_video, video, s_mbus_fmt, &fmt);
return 0;
}
static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
{
static const u32 freqs[3] = { 44100, 48000, 32000 };
struct ivtv *itv = container_of(cxhdl, struct ivtv, 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))
ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
return 0;
}
static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
{
struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
itv->dualwatch_stereo_mode = val;
return 0;
}
struct cx2341x_handler_ops ivtv_cxhdl_ops = {
.s_audio_mode = ivtv_s_audio_mode,
.s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
.s_video_encoding = ivtv_s_video_encoding,
.s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
};
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