int v4l2_is_playing_in_stereo (void ** session_data){
fm_v4l2_data* session;
int ret;
ALOGI("%s:\n", __FUNCTION__);
session = get_session_data(session_data);
ret = get_stereo(session->fd, &session->vt);
return ret;
}
static inline int radio_function(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct radio_device *card=dev->priv;
switch(cmd) {
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *v = arg;
memset(v,0,sizeof(*v));
strlcpy(v->driver, "radio-maxiradio", sizeof (v->driver));
strlcpy(v->card, "Maxi Radio FM2000 radio", sizeof (v->card));
sprintf(v->bus_info,"ISA");
v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER;
return 0;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *v = arg;
if (v->index > 0)
return -EINVAL;
memset(v,0,sizeof(*v));
strcpy(v->name, "FM");
v->type = V4L2_TUNER_RADIO;
v->rangelow=FREQ_LO;
v->rangehigh=FREQ_HI;
v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
v->capability=V4L2_TUNER_CAP_LOW;
if(get_stereo(card->io))
v->audmode = V4L2_TUNER_MODE_STEREO;
else
v->audmode = V4L2_TUNER_MODE_MONO;
v->signal=0xffff*get_tune(card->io);
return 0;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *v = arg;
if (v->index > 0)
return -EINVAL;
return 0;
}
case VIDIOC_S_FREQUENCY:
{
struct v4l2_frequency *f = arg;
if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
return -EINVAL;
card->freq = f->frequency;
set_freq(card->io, FREQ2BITS(card->freq));
msleep(125);
return 0;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *f = arg;
f->type = V4L2_TUNER_RADIO;
f->frequency = card->freq;
return 0;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
int i;
for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
if (qc->id && qc->id == radio_qctrl[i].id) {
memcpy(qc, &(radio_qctrl[i]),
sizeof(*qc));
return (0);
}
}
return -EINVAL;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl= arg;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value=card->muted;
return (0);
}
return -EINVAL;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl= arg;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
card->muted = ctrl->value;
if(card->muted)
turn_power(card->io, 0);
else
set_freq(card->io, FREQ2BITS(card->freq));
return 0;
}
return -EINVAL;
}
default:
return v4l_compat_translate_ioctl(inode,file,cmd,arg,
radio_function);
}
}
static inline int radio_function(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct radio_device *card=dev->priv;
switch(cmd) {
case VIDIOCGCAP: {
struct video_capability *v = arg;
memset(v,0,sizeof(*v));
strcpy(v->name, "Maxi Radio FM2000 radio");
v->type=VID_TYPE_TUNER;
v->channels=v->audios=1;
return 0;
}
case VIDIOCGTUNER: {
struct video_tuner *v = arg;
if(v->tuner)
return -EINVAL;
card->stereo = 0xffff * get_stereo(card->io);
card->tuned = 0xffff * get_tune(card->io);
v->flags = VIDEO_TUNER_LOW | card->stereo;
v->signal = card->tuned;
strcpy(v->name, "FM");
v->rangelow = FREQ_LO;
v->rangehigh = FREQ_HI;
v->mode = VIDEO_MODE_AUTO;
return 0;
}
case VIDIOCSTUNER: {
struct video_tuner *v = arg;
if(v->tuner!=0)
return -EINVAL;
return 0;
}
case VIDIOCGFREQ: {
unsigned long *freq = arg;
*freq = card->freq;
return 0;
}
case VIDIOCSFREQ: {
unsigned long *freq = arg;
if (*freq < FREQ_LO || *freq > FREQ_HI)
return -EINVAL;
card->freq = *freq;
set_freq(card->io, FREQ2BITS(card->freq));
msleep(125);
return 0;
}
case VIDIOCGAUDIO: {
struct video_audio *v = arg;
memset(v,0,sizeof(*v));
strcpy(v->name, "Radio");
v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
v->mode=VIDEO_SOUND_STEREO;
return 0;
}
case VIDIOCSAUDIO: {
struct video_audio *v = arg;
if(v->audio)
return -EINVAL;
card->muted = v->flags & VIDEO_AUDIO_MUTE;
if(card->muted)
turn_power(card->io, 0);
else
set_freq(card->io, FREQ2BITS(card->freq));
return 0;
}
case VIDIOCGUNIT: {
struct video_unit *v = arg;
v->video=VIDEO_NO_UNIT;
v->vbi=VIDEO_NO_UNIT;
v->radio=dev->minor;
v->audio=0;
v->teletext=VIDEO_NO_UNIT;
return 0;
}
default: return -ENOIOCTLCMD;
}
}
