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mpv/stream/stream_pvr.c
Marcin Kurczewski f43017bfe9 Update license headers 
Signed-off-by: wm4 <wm4@nowhere>
2015-04-13 12:10:01 +02:00

1616 lines
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/*
* stream layer for hardware MPEG 1/2/4 encoders a.k.a PVR
* (such as WinTV PVR-150/250/350/500 (a.k.a IVTV), pvrusb2 and cx88)
* See http://ivtvdriver.org/index.php/Main_Page for more details on the
* cards supported by the ivtv driver.
*
* Copyright (C) 2006 Benjamin Zores
* Copyright (C) 2007 Sven Gothel (channel navigation)
*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <inttypes.h>
#include <poll.h>
#include <linux/videodev2.h>
#include <libavutil/common.h>
#include <libavutil/avstring.h>
#include "osdep/io.h"
#include "common/msg.h"
#include "common/common.h"
#include "options/options.h"
#include "stream.h"
#include "tv.h"
#include "frequencies.h"
#define PVR_DEFAULT_DEVICE "/dev/video0"
#define PVR_MAX_CONTROLS 10
/* audio codec mode */
#define PVR_AUDIO_MODE_ARG_STEREO "stereo"
#define PVR_AUDIO_MODE_ARG_JOINT_STEREO "joint_stereo"
#define PVR_AUDIO_MODE_ARG_DUAL "dual"
#define PVR_AUDIO_MODE_ARG_MONO "mono"
/* video codec bitrate mode */
#define PVR_VIDEO_BITRATE_MODE_ARG_VBR "vbr"
#define PVR_VIDEO_BITRATE_MODE_ARG_CBR "cbr"
/* video codec stream type */
#define PVR_VIDEO_STREAM_TYPE_PS "ps"
#define PVR_VIDEO_STREAM_TYPE_TS "ts"
#define PVR_VIDEO_STREAM_TYPE_MPEG1 "mpeg1"
#define PVR_VIDEO_STREAM_TYPE_DVD "dvd"
#define PVR_VIDEO_STREAM_TYPE_VCD "vcd"
#define PVR_VIDEO_STREAM_TYPE_SVCD "svcd"
#define PVR_STATION_NAME_SIZE 256
/* command line arguments */
struct pvr_params {
int aspect_ratio;
int sample_rate;
int audio_layer;
int audio_bitrate;
char *audio_mode;
int bitrate;
char *bitrate_mode;
int bitrate_peak;
char *stream_type;
};
#define OPT_BASE_STRUCT struct pvr_params
const struct m_sub_options stream_pvr_conf = {
.opts = (const m_option_t[]) {
OPT_INT("aspect", aspect_ratio, 0),
OPT_INT("arate", sample_rate, 0),
OPT_INT("alayer", audio_layer, 0),
OPT_INT("abitrate", audio_bitrate, 0),
OPT_STRING("amode", audio_mode, 0),
OPT_INT("vbitrate", bitrate, 0),
OPT_STRING("vmode", bitrate_mode, 0),
OPT_INT("vpeak", bitrate_peak, 0),
OPT_STRING("fmt", stream_type, 0),
{0}
},
.size = sizeof(struct pvr_params),
};
#define BUFSTRCPY(d, s) av_strlcpy(d, s, sizeof(d))
#define BUFPRINTF(d, ...) snprintf(d, sizeof(d), __VA_ARGS__)
typedef struct station_elem_s {
char name[PVR_STATION_NAME_SIZE];
int freq;
char station[PVR_STATION_NAME_SIZE];
int enabled;
int priority;
} station_elem_t;
typedef struct stationlist_s {
char name[PVR_STATION_NAME_SIZE];
station_elem_t *list;
int total; /* total number */
int used; /* used number */
int enabled; /* enabled number */
} stationlist_t;
struct pvr_t {
struct mp_log *log;
tv_param_t *tv_params;
struct pvr_params *params;
int dev_fd;
char *video_dev;
int chantab;
/* v4l2 params */
int mute;
int input;
int normid;
int brightness;
int contrast;
int hue;
int saturation;
int width;
int height;
int freq;
int chan_idx;
int chan_idx_last;
stationlist_t stationlist;
/* dups the tv_param_channel, or the url's channel param */
char *param_channel;
/* encoder params */
int aspect;
int samplerate;
int layer;
int audio_rate;
int audio_mode;
int bitrate;
int bitrate_mode;
int bitrate_peak;
int stream_type;
};
static int pvr_stream_control(struct stream *s, int cmd, void *arg);
static struct pvr_t *pvr_init(void)
{
struct pvr_t *pvr = NULL;
pvr = calloc(1, sizeof (struct pvr_t));
pvr->dev_fd = -1;
pvr->video_dev = strdup(PVR_DEFAULT_DEVICE);
pvr->chantab = 5;
/* v4l2 params */
pvr->mute = 0;
pvr->input = 0;
pvr->normid = -1;
pvr->brightness = 0;
pvr->contrast = 0;
pvr->hue = 0;
pvr->saturation = 0;
pvr->width = -1;
pvr->height = -1;
pvr->freq = -1;
pvr->chan_idx = -1;
pvr->chan_idx_last = -1;
/* set default encoding settings
* may be overlapped by user parameters
* Use VBR MPEG_PS encoding at 6 Mbps (peak at 9.6 Mbps)
* with 48 KHz L2 384 kbps audio.
*/
pvr->aspect = V4L2_MPEG_VIDEO_ASPECT_4x3;
pvr->samplerate = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
pvr->layer = V4L2_MPEG_AUDIO_ENCODING_LAYER_2;
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
pvr->audio_mode = V4L2_MPEG_AUDIO_MODE_STEREO;
pvr->bitrate = 6000000;
pvr->bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
pvr->bitrate_peak = 9600000;
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_PS;
return pvr;
}
static void pvr_uninit(struct pvr_t *pvr)
{
if (!pvr)
return;
/* close device */
if (pvr->dev_fd != -1)
close(pvr->dev_fd);
free(pvr->video_dev);
free(pvr->stationlist.list);
free(pvr->param_channel);
free(pvr);
}
/**
* @brief Copy Constructor for stationlist
*
* @see parse_setup_stationlist
*/
static int copycreate_stationlist(struct pvr_t *pvr, stationlist_t *stationlist,
int num)
{
int i;
if (pvr->chantab < 0 || !stationlist)
return -1;
num = FFMAX(num, chanlists[pvr->chantab].count);
free(stationlist->list);
stationlist->list = NULL;
stationlist->total = 0;
stationlist->enabled = 0;
stationlist->used = 0;
stationlist->list = calloc(num, sizeof (station_elem_t));
if (!stationlist->list) {
MP_ERR(pvr, "No memory allocated for station list, giving up\n");
return -1;
}
/* transport the channel list data to our extented struct */
stationlist->total = num;
BUFSTRCPY(stationlist->name, chanlists[pvr->chantab].name);
for (i = 0; i < chanlists[pvr->chantab].count; i++) {
stationlist->list[i].station[0] = '\0'; /* no station name yet */
BUFSTRCPY(stationlist->list[i].name,
chanlists[pvr->chantab].list[i].name);
stationlist->list[i].freq = chanlists[pvr->chantab].list[i].freq;
stationlist->list[i].enabled = 1; /* default enabled */
stationlist->enabled++;
stationlist->used++;
}
return 0;
}
static int print_all_stations(struct pvr_t *pvr)
{
int i;
if (!pvr || !pvr->stationlist.list)
return -1;
for (i = 0; i < pvr->stationlist.total; i++) {
MP_VERBOSE(pvr, "%3d: [%c] channel: %8s - freq: %8d - station: %s\n",
i, (pvr->stationlist.list[i].enabled) ? 'X' : ' ',
pvr->stationlist.list[i].name, pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
}
return 0;
}
/**
* Disables all stations
*
* @see parse_setup_stationlist
*/
static void disable_all_stations(struct pvr_t *pvr)
{
int i;
for (i = 0; i < pvr->stationlist.total; i++)
pvr->stationlist.list[i].enabled = 0;
pvr->stationlist.enabled = 0;
}
/**
* Update or add a station
*
* @see parse_setup_stationlist
*/
static int set_station(struct pvr_t *pvr, const char *station,
const char *channel, int freq, int priority)
{
int i;
if (!pvr || !pvr->stationlist.list)
return -1;
if (0 >= pvr->stationlist.total || (!channel && !freq))
return -1;
/* select channel */
for (i = 0; i < pvr->stationlist.used; i++) {
if (channel && !strcasecmp(pvr->stationlist.list[i].name, channel))
break; /* found existing channel entry */
if (freq > 0 && pvr->stationlist.list[i].freq == freq)
break; /* found existing frequency entry */
}
if (i < pvr->stationlist.used) {
/**
* found an existing entry,
* which is about to change with the user data.
* it is also enabled ..
*/
if (!pvr->stationlist.list[i].enabled) {
pvr->stationlist.list[i].enabled = 1;
pvr->stationlist.enabled++;
}
if (station)
BUFSTRCPY(pvr->stationlist.list[i].station, station);
else if (channel)
BUFSTRCPY(pvr->stationlist.list[i].station, channel);
else
BUFPRINTF(pvr->stationlist.list[i].station, "F %d", freq);
pvr->stationlist.list[i].priority = priority;
MP_DBG(pvr, "Set user station channel: %8s - freq: %8d - station: %s\n",
pvr->stationlist.list[i].name,
pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
return 0;
}
/* from here on, we have to create a new entry, frequency is mandatory */
if (freq < 0) {
MP_ERR(pvr, "Cannot add new station/channel without frequency\n");
return -1;
}
if (pvr->stationlist.total < i) {
/**
* we have to extend the stationlist about
* an arbitrary size, even though this path is not performance critical
*/
pvr->stationlist.total += 10;
pvr->stationlist.list =
realloc(pvr->stationlist.list,
pvr->stationlist.total * sizeof (station_elem_t));
if (!pvr->stationlist.list) {
MP_ERR(pvr, "No memory allocated for station list, giving up\n");
return -1;
}
/* clear the new space ..*/
memset(&(pvr->stationlist.list[pvr->stationlist.used]), 0,
(pvr->stationlist.total - pvr->stationlist.used)
* sizeof (station_elem_t));
}
/* here we go, our actual new entry */
pvr->stationlist.used++;
pvr->stationlist.list[i].enabled = 1;
pvr->stationlist.list[i].priority = priority;
pvr->stationlist.enabled++;
if (station)
BUFSTRCPY(pvr->stationlist.list[i].station, station);
if (channel)
BUFSTRCPY(pvr->stationlist.list[i].name, channel);
else
BUFPRINTF(pvr->stationlist.list[i].name, "F %d", freq);
pvr->stationlist.list[i].freq = freq;
MP_DBG(pvr, "Add user station channel: %8s - freq: %8d - station: %s\n",
pvr->stationlist.list[i].name,
pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
return 0;
}
static int compare_priority(const void *pa, const void *pb)
{
const station_elem_t *a = pa;
const station_elem_t *b = pb;
if (a->priority < b->priority)
return -1;
if (a->priority > b->priority)
return 1;
return 0;
}
/**
* Here we set our stationlist, as follow
* - choose the frequency channel table, e.g. ntsc-cable
* - create our stationlist, same element size as the channellist
* - copy the channellist content to our stationlist
* - IF the user provides his channel-mapping, THEN:
* - disable all stations
* - update and/or create entries in the stationlist and enable them
*/
static int parse_setup_stationlist(struct pvr_t *pvr)
{
int i;
if (!pvr)
return -1;
/* Create our station/channel list */
if (pvr->tv_params->chanlist) {
/* select channel list */
for (i = 0; chanlists[i].name != NULL; i++) {
if (!strcasecmp(chanlists[i].name, pvr->tv_params->chanlist)) {
pvr->chantab = i;
break;
}
}
if (!chanlists[i].name) {
MP_ERR(pvr, "unable to find channel list %s, using default %s\n",
pvr->tv_params->chanlist, chanlists[pvr->chantab].name);
} else {
MP_INFO(pvr, "select channel list %s, entries %d\n",
chanlists[pvr->chantab].name, chanlists[pvr->chantab].count);
}
}
if (0 > pvr->chantab) {
MP_FATAL(pvr, "No channel list selected, giving up\n");
return -1;
}
if (copycreate_stationlist(pvr, &(pvr->stationlist), -1) < 0) {
MP_FATAL(pvr, "No memory allocated for station list, giving up\n");
return -1;
}
/* Handle user channel mappings */
if (pvr->tv_params->channels) {
char channel[PVR_STATION_NAME_SIZE];
char station[PVR_STATION_NAME_SIZE];
char **channels = pvr->tv_params->channels;
disable_all_stations(pvr);
int prio = 0;
for (i = 0; i < pvr->stationlist.total; i++)
pvr->stationlist.list[i].priority = ++prio;
while (*channels) {
char *tmp = *(channels++);
char *sep = strchr(tmp, '-');
int freq = -1;
if (!sep)
continue; /* Wrong syntax, but mplayer should not crash */
BUFSTRCPY(station, sep + 1);
sep[0] = '\0';
BUFSTRCPY(channel, tmp);
while ((sep = strchr(station, '_')))
sep[0] = ' ';
/* if channel number is a number and larger than 1000 treat it as
* frequency tmp still contain pointer to null-terminated string with
* channel number here
*/
if ((freq = atoi(channel)) <= 1000)
freq = -1;
if (set_station(pvr, station, (freq <= 0) ? channel : NULL, freq,
++prio) < 0)
{
MP_ERR(pvr, "Unable to set user station channel: %8s - "
"freq: %8d - station: %s\n", channel, freq, station);
}
}
qsort(pvr->stationlist.list, pvr->stationlist.total,
sizeof(station_elem_t), compare_priority);
}
return print_all_stations(pvr);
}
static int get_v4l2_freq(struct pvr_t *pvr)
{
int freq;
struct v4l2_frequency vf;
struct v4l2_tuner vt;
if (!pvr)
return -1;
if (pvr->dev_fd < 0)
return -1;
memset(&vt, 0, sizeof (vt));
memset(&vf, 0, sizeof (vf));
if (ioctl(pvr->dev_fd, VIDIOC_G_TUNER, &vt) < 0) {
MP_ERR(pvr, "can't set tuner (%s).\n", mp_strerror(errno));
return -1;
}
if (ioctl(pvr->dev_fd, VIDIOC_G_FREQUENCY, &vf) < 0) {
MP_ERR(pvr, "can't get frequency (%s).\n", mp_strerror(errno));
return -1;
}
freq = vf.frequency;
if (!(vt.capability & V4L2_TUNER_CAP_LOW))
freq *= 1000;
freq /= 16;
return freq;
}
static int set_v4l2_freq(struct pvr_t *pvr)
{
struct v4l2_frequency vf;
struct v4l2_tuner vt;
if (!pvr)
return -1;
if (0 >= pvr->freq) {
MP_ERR(pvr, "Frequency invalid %d !!!\n", pvr->freq);
return -1;
}
/* don't set the frequency, if it's already set.
* setting it here would interrupt the stream.
*/
if (get_v4l2_freq(pvr) == pvr->freq) {
MP_INFO(pvr, "Frequency %d already set.\n", pvr->freq);
return 0;
}
if (pvr->dev_fd < 0)
return -1;
memset(&vf, 0, sizeof (vf));
memset(&vt, 0, sizeof (vt));
if (ioctl(pvr->dev_fd, VIDIOC_G_TUNER, &vt) < 0) {
MP_ERR(pvr, "can't get tuner (%s).\n", mp_strerror(errno));
return -1;
}
vf.type = vt.type;
vf.frequency = pvr->freq * 16;
if (!(vt.capability & V4L2_TUNER_CAP_LOW))
vf.frequency /= 1000;
if (ioctl(pvr->dev_fd, VIDIOC_S_FREQUENCY, &vf) < 0) {
MP_ERR(pvr, "can't set frequency (%s).\n", mp_strerror(errno));
return -1;
}
memset(&vt, 0, sizeof(vt));
if (ioctl(pvr->dev_fd, VIDIOC_G_TUNER, &vt) < 0) {
MP_ERR(pvr, "can't set tuner (%s).\n", mp_strerror(errno));
return -1;
}
/* just a notification */
if (!vt.signal) {
MP_ERR(pvr, "NO SIGNAL at frequency %d (%d)\n", pvr->freq, vf.frequency);
} else {
MP_INFO(pvr, "Got signal at frequency %d (%d)\n", pvr->freq,
vf.frequency);
}
return 0;
}
static int set_station_by_step(struct pvr_t *pvr, int step, int v4lAction)
{
if (!pvr || !pvr->stationlist.list)
return -1;
if (pvr->stationlist.enabled >= abs(step)) {
int gotcha = 0;
int chidx = pvr->chan_idx + step;
while (!gotcha) {
chidx = (chidx + pvr->stationlist.used) % pvr->stationlist.used;
MP_DBG(pvr, "Offset switch: current %d, enabled %d, step %d -> %d\n",
pvr->chan_idx, pvr->stationlist.enabled, step,
chidx);
if (!pvr->stationlist.list[chidx].enabled) {
MP_DBG(pvr, "Switch disabled to user station channel: %8s - "
"freq: %8d - station: %s\n",
pvr->stationlist.list[chidx].name,
pvr->stationlist.list[chidx].freq,
pvr->stationlist.list[chidx].station);
chidx += FFSIGN(step);
} else {
gotcha = 1;
}
}
pvr->freq = pvr->stationlist.list[chidx].freq;
pvr->chan_idx_last = pvr->chan_idx;
pvr->chan_idx = chidx;
MP_INFO(pvr, "Switch to user station channel: %8s - freq: %8d - station: %s\n",
pvr->stationlist.list[chidx].name,
pvr->stationlist.list[chidx].freq,
pvr->stationlist.list[chidx].station);
if (v4lAction)
return set_v4l2_freq(pvr);
return (pvr->freq > 0) ? 0 : -1;
}
MP_ERR(pvr, "Ooops couldn't set freq by channel entry step %d to "
"current %d, enabled %d\n",
step, pvr->chan_idx, pvr->stationlist.enabled);
return -1;
}
static int set_station_by_channelname_or_freq(struct pvr_t *pvr,
const char *channel,
int freq, int v4lAction)
{
int i = 0;
if (!pvr || !pvr->stationlist.list)
return -1;
if (0 >= pvr->stationlist.enabled) {
MP_WARN(pvr, "No enabled station, cannot switch channel/frequency\n");
return -1;
}
if (channel) {
/* select by channel */
for (i = 0; i < pvr->stationlist.used; i++) {
if (!strcasecmp(pvr->stationlist.list[i].name, channel)) {
if (!pvr->stationlist.list[i].enabled) {
MP_WARN(pvr, "Switch disabled to user station channel: %8s "
"- freq: %8d - station: %s\n",
pvr->stationlist.list[i].name,
pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
return -1;
}
pvr->freq = pvr->stationlist.list[i].freq;
pvr->chan_idx_last = pvr->chan_idx;
pvr->chan_idx = i;
break;
}
}
} else if (freq >= 0) {
/* select by freq */
for (i = 0; i < pvr->stationlist.used; i++) {
if (pvr->stationlist.list[i].freq == freq) {
if (!pvr->stationlist.list[i].enabled) {
MP_WARN(pvr, "Switch disabled to user station channel: "
"%8s - freq: %8d - station: %s\n",
pvr->stationlist.list[i].name,
pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
return -1;
}
pvr->freq = pvr->stationlist.list[i].freq;
pvr->chan_idx_last = pvr->chan_idx;
pvr->chan_idx = i;
break;
}
}
}
if (i >= pvr->stationlist.used) {
if (channel) {
MP_WARN(pvr, "unable to find channel %s\n", channel);
} else {
MP_WARN(pvr, "unable to find frequency %d\n", freq);
}
return -1;
}
MP_INFO(pvr, "Switch to user station channel: %8s - freq: %8d - station: %s\n",
pvr->stationlist.list[i].name,
pvr->stationlist.list[i].freq,
pvr->stationlist.list[i].station);
if (v4lAction)
return set_v4l2_freq(pvr);
return (pvr->freq > 0) ? 0 : -1;
}
static void parse_encoder_options(struct pvr_t *pvr)
{
if (!pvr)
return;
/* -pvr aspect=digit */
if (pvr->params->aspect_ratio >= 0 && pvr->params->aspect_ratio <= 3)
pvr->aspect = pvr->params->aspect_ratio;
/* -pvr arate=x */
if (pvr->params->sample_rate != 0) {
switch (pvr->params->sample_rate) {
case 32000:
pvr->samplerate = V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000;
break;
case 44100:
pvr->samplerate = V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100;
break;
case 48000:
pvr->samplerate = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
break;
default:
break;
}
}
/* -pvr alayer=x */
if (pvr->params->audio_layer == 1) {
pvr->layer = V4L2_MPEG_AUDIO_ENCODING_LAYER_1;
} else if (pvr->params->audio_layer == 2) {
pvr->layer = V4L2_MPEG_AUDIO_ENCODING_LAYER_2;
} else if (pvr->params->audio_layer == 3) {
pvr->layer = V4L2_MPEG_AUDIO_ENCODING_LAYER_3;
}
/* -pvr abitrate=x */
if (pvr->params->audio_bitrate != 0) {
if (pvr->layer == V4L2_MPEG_AUDIO_ENCODING_LAYER_1) {
switch (pvr->params->audio_bitrate) {
case 32:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_32K;
break;
case 64:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_64K;
break;
case 96:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_96K;
break;
case 128:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_128K;
break;
case 160:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_160K;
break;
case 192:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_192K;
break;
case 224:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_224K;
break;
case 256:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_256K;
break;
case 288:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_288K;
break;
case 320:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_320K;
break;
case 352:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_352K;
break;
case 384:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_384K;
break;
case 416:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_416K;
break;
case 448:
pvr->audio_rate = V4L2_MPEG_AUDIO_L1_BITRATE_448K;
break;
default:
break;
}
} else if (pvr->layer == V4L2_MPEG_AUDIO_ENCODING_LAYER_2) {
switch (pvr->params->audio_bitrate) {
case 32:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_32K;
break;
case 48:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_48K;
break;
case 56:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_56K;
break;
case 64:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_64K;
break;
case 80:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_80K;
break;
case 96:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_96K;
break;
case 112:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_112K;
break;
case 128:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_128K;
break;
case 160:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_160K;
break;
case 192:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_192K;
break;
case 224:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_224K;
break;
case 256:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
break;
case 320:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_320K;
break;
case 384:
pvr->audio_rate = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
break;
default:
break;
}
} else if (pvr->layer == V4L2_MPEG_AUDIO_ENCODING_LAYER_3) {
switch (pvr->params->audio_bitrate) {
case 32:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_32K;
break;
case 40:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_40K;
break;
case 48:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_48K;
break;
case 56:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_56K;
break;
case 64:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_64K;
break;
case 80:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_80K;
break;
case 96:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_96K;
break;
case 112:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_112K;
break;
case 128:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_128K;
break;
case 160:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_160K;
break;
case 192:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_192K;
break;
case 224:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_224K;
break;
case 256:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_256K;
break;
case 320:
pvr->audio_rate = V4L2_MPEG_AUDIO_L3_BITRATE_320K;
break;
default:
break;
}
}
}
/* -pvr amode=x */
if (pvr->params->audio_mode) {
if (!strcmp(pvr->params->audio_mode, PVR_AUDIO_MODE_ARG_STEREO)) {
pvr->audio_mode = V4L2_MPEG_AUDIO_MODE_STEREO;
} else if (!strcmp(pvr->params->audio_mode,
PVR_AUDIO_MODE_ARG_JOINT_STEREO))
{
pvr->audio_mode = V4L2_MPEG_AUDIO_MODE_JOINT_STEREO;
} else if (!strcmp(pvr->params->audio_mode, PVR_AUDIO_MODE_ARG_DUAL)) {
pvr->audio_mode = V4L2_MPEG_AUDIO_MODE_DUAL;
} else if (!strcmp(pvr->params->audio_mode, PVR_AUDIO_MODE_ARG_MONO)) {
pvr->audio_mode = V4L2_MPEG_AUDIO_MODE_MONO;
}
}
/* -pvr vbitrate=x */
if (pvr->params->bitrate)
pvr->bitrate = pvr->params->bitrate;
/* -pvr vmode=x */
if (pvr->params->bitrate_mode) {
if (!strcmp(pvr->params->bitrate_mode, PVR_VIDEO_BITRATE_MODE_ARG_VBR)) {
pvr->bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
} else if (!strcmp(pvr->params->bitrate_mode,
PVR_VIDEO_BITRATE_MODE_ARG_CBR))
{
pvr->bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_CBR;
}
}
/* -pvr vpeak=x */
if (pvr->params->bitrate_peak)
pvr->bitrate_peak = pvr->params->bitrate_peak;
/* -pvr fmt=x */
if (pvr->params->stream_type) {
if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_PS)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_PS;
} else if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_TS)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
} else if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_MPEG1)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG1_SS;
} else if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_DVD)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_DVD;
} else if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_VCD)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG1_VCD;
} else if (!strcmp(pvr->params->stream_type, PVR_VIDEO_STREAM_TYPE_SVCD)) {
pvr->stream_type = V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD;
}
}
}
static void add_v4l2_ext_control(struct v4l2_ext_control *ctrl,
uint32_t id, int32_t value)
{
ctrl->id = id;
ctrl->value = value;
}
static int set_encoder_settings(struct pvr_t *pvr)
{
struct v4l2_ext_control *ext_ctrl = NULL;
struct v4l2_ext_controls ctrls;
uint32_t count = 0;
if (!pvr)
return -1;
if (pvr->dev_fd < 0)
return -1;
ext_ctrl = malloc(PVR_MAX_CONTROLS * sizeof (struct v4l2_ext_control));
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_VIDEO_ASPECT,
pvr->aspect);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
pvr->samplerate);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_ENCODING,
pvr->layer);
switch (pvr->layer) {
case V4L2_MPEG_AUDIO_ENCODING_LAYER_1:
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_L1_BITRATE,
pvr->audio_rate);
break;
case V4L2_MPEG_AUDIO_ENCODING_LAYER_2:
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_L2_BITRATE,
pvr->audio_rate);
break;
case V4L2_MPEG_AUDIO_ENCODING_LAYER_3:
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_L3_BITRATE,
pvr->audio_rate);
break;
default:
break;
}
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_AUDIO_MODE,
pvr->audio_mode);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_VIDEO_BITRATE,
pvr->bitrate);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
pvr->bitrate_peak);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
pvr->bitrate_mode);
add_v4l2_ext_control(&ext_ctrl[count++], V4L2_CID_MPEG_STREAM_TYPE,
pvr->stream_type);
/* set new encoding settings */
ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
ctrls.count = count;
ctrls.controls = ext_ctrl;
if (ioctl(pvr->dev_fd, VIDIOC_S_EXT_CTRLS, &ctrls) < 0) {
MP_ERR(pvr, "Error setting MPEG controls (%s).\n", mp_strerror(errno));
free(ext_ctrl);
return -1;
}
free(ext_ctrl);
return 0;
}
static void parse_v4l2_tv_options(struct pvr_t *pvr)
{
if (!pvr)
return;
/* Create our station/channel list */
parse_setup_stationlist(pvr);
if (pvr->param_channel) {
if (set_station_by_channelname_or_freq(pvr, pvr->param_channel,
-1, 0) >= 0) {
if (pvr->tv_params->freq) {
MP_INFO(pvr, "tv param freq %s is overwritten by channel "
"setting freq %d\n", pvr->tv_params->freq, pvr->freq);
}
}
}
if (pvr->freq < 0 && pvr->tv_params->freq) {
MP_INFO(pvr, "tv param freq %s is used directly\n",
pvr->tv_params->freq);
if (set_station_by_channelname_or_freq(pvr, NULL,
atoi(pvr->tv_params->freq),
0) < 0) {
MP_WARN(pvr, "tv param freq %s invalid to set station\n",
pvr->tv_params->freq);
}
}
if (pvr->tv_params->device) {
free(pvr->video_dev);
pvr->video_dev = strdup(pvr->tv_params->device);
}
if (!pvr->tv_params->audio)
pvr->mute = !pvr->tv_params->audio;
if (pvr->tv_params->input)
pvr->input = pvr->tv_params->input;
if (pvr->tv_params->normid)
pvr->normid = pvr->tv_params->normid;
if (pvr->tv_params->brightness)
pvr->brightness = pvr->tv_params->brightness;
if (pvr->tv_params->contrast)
pvr->contrast = pvr->tv_params->contrast;
if (pvr->tv_params->hue)
pvr->hue = pvr->tv_params->hue;
if (pvr->tv_params->saturation)
pvr->saturation = pvr->tv_params->saturation;
if (pvr->tv_params->width)
pvr->width = pvr->tv_params->width;
if (pvr->tv_params->height)
pvr->height = pvr->tv_params->height;
}
static int set_v4l2_settings(struct pvr_t *pvr)
{
if (!pvr)
return -1;
if (pvr->dev_fd < 0)
return -1;
/* -tv noaudio */
if (pvr->mute) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_AUDIO_MUTE;
ctrl.value = 1;
if (ioctl(pvr->dev_fd, VIDIOC_S_CTRL, &ctrl) < 0) {
MP_ERR(pvr, "can't mute (%s).\n", mp_strerror(errno));
return -1;
}
}
/* -tv input=x */
if (pvr->input != 0) {
if (ioctl(pvr->dev_fd, VIDIOC_S_INPUT, &pvr->input) < 0) {
MP_ERR(pvr, "can't set input (%s)\n", mp_strerror(errno));
return -1;
}
}
/* -tv normid=x */
if (pvr->normid != -1) {
struct v4l2_standard std;
std.index = pvr->normid;
if (ioctl(pvr->dev_fd, VIDIOC_ENUMSTD, &std) < 0) {
MP_ERR(pvr, "can't set norm (%s)\n", mp_strerror(errno));
return -1;
}
MP_VERBOSE(pvr, "set norm to %s\n", std.name);
if (ioctl(pvr->dev_fd, VIDIOC_S_STD, &std.id) < 0) {
MP_ERR(pvr, "can't set norm (%s)\n", mp_strerror(errno));
return -1;
}
}
/* -tv brightness=x */
if (pvr->brightness != 0) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_BRIGHTNESS;
ctrl.value = pvr->brightness;
if (ctrl.value < 0)
ctrl.value = 0;
if (ctrl.value > 255)
ctrl.value = 255;
if (ioctl(pvr->dev_fd, VIDIOC_S_CTRL, &ctrl) < 0) {
MP_ERR(pvr, "can't set brightness to %d (%s).\n",
ctrl.value, mp_strerror(errno));
return -1;
}
}
/* -tv contrast=x */
if (pvr->contrast != 0) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_CONTRAST;
ctrl.value = pvr->contrast;
if (ctrl.value < 0)
ctrl.value = 0;
if (ctrl.value > 127)
ctrl.value = 127;
if (ioctl(pvr->dev_fd, VIDIOC_S_CTRL, &ctrl) < 0) {
MP_ERR(pvr, "can't set contrast to %d (%s).\n",
ctrl.value, mp_strerror(errno));
return -1;
}
}
/* -tv hue=x */
if (pvr->hue != 0) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_HUE;
ctrl.value = pvr->hue;
if (ctrl.value < -128)
ctrl.value = -128;
if (ctrl.value > 127)
ctrl.value = 127;
if (ioctl(pvr->dev_fd, VIDIOC_S_CTRL, &ctrl) < 0) {
MP_ERR(pvr, "can't set hue to %d (%s).\n",
ctrl.value, mp_strerror(errno));
return -1;
}
}
/* -tv saturation=x */
if (pvr->saturation != 0) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_SATURATION;
ctrl.value = pvr->saturation;
if (ctrl.value < 0)
ctrl.value = 0;
if (ctrl.value > 127)
ctrl.value = 127;
if (ioctl(pvr->dev_fd, VIDIOC_S_CTRL, &ctrl) < 0) {
MP_ERR(pvr, "can't set saturation to %d (%s).\n",
ctrl.value, mp_strerror(errno));
return -1;
}
}
/* -tv width=x:height=y */
if (pvr->width && pvr->height) {
struct v4l2_format vfmt;
vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vfmt.fmt.pix.width = pvr->width;
vfmt.fmt.pix.height = pvr->height;
if (ioctl(pvr->dev_fd, VIDIOC_S_FMT, &vfmt) < 0) {
MP_ERR(pvr, "can't set resolution to %dx%d (%s).\n",
pvr->width, pvr->height, mp_strerror(errno));
return -1;
}
}
if (pvr->freq < 0) {
int freq = get_v4l2_freq(pvr);
MP_INFO(pvr, "Using current set frequency %d, to set channel\n", freq);
if (0 < freq)
return set_station_by_channelname_or_freq(pvr, NULL, freq, 1);
}
if (0 < pvr->freq)
return set_v4l2_freq(pvr);
return 0;
}
static int v4l2_list_capabilities(struct pvr_t *pvr)
{
struct v4l2_audio vaudio;
struct v4l2_standard vs;
struct v4l2_input vin;
int err = 0;
if (!pvr)
return -1;
if (pvr->dev_fd < 0)
return -1;
/* list available video inputs */
vin.index = 0;
err = 1;
MP_INFO(pvr, "Available video inputs: ");
while (ioctl(pvr->dev_fd, VIDIOC_ENUMINPUT, &vin) >= 0) {
err = 0;
MP_INFO(pvr, "'#%d, %s' ", vin.index, vin.name);
vin.index++;
}
if (err) {
MP_INFO(pvr, "none\n");
return -1;
} else {
MP_INFO(pvr, "\n");
}
/* list available audio inputs */
vaudio.index = 0;
err = 1;
MP_INFO(pvr, "Available audio inputs: ");
while (ioctl(pvr->dev_fd, VIDIOC_ENUMAUDIO, &vaudio) >= 0) {
err = 0;
MP_INFO(pvr, "'#%d, %s' ", vaudio.index, vaudio.name);
vaudio.index++;
}
if (err) {
MP_INFO(pvr, "none\n");
return -1;
} else {
MP_INFO(pvr, "\n");
}
/* list available norms */
vs.index = 0;
MP_INFO(pvr, "Available norms: ");
while (ioctl(pvr->dev_fd, VIDIOC_ENUMSTD, &vs) >= 0) {
err = 0;
MP_INFO(pvr, "'#%d, %s' ", vs.index, vs.name);
vs.index++;
}
if (err) {
MP_INFO(pvr, "none\n");
return -1;
} else {
MP_INFO(pvr, "\n");
}
return 0;
}
static int v4l2_display_settings(struct pvr_t *pvr)
{
struct v4l2_audio vaudio;
struct v4l2_standard vs;
struct v4l2_input vin;
v4l2_std_id std;
int input;
if (!pvr)
return -1;
if (pvr->dev_fd < 0)
return -1;
/* get current video input */
if (ioctl(pvr->dev_fd, VIDIOC_G_INPUT, &input) == 0) {
vin.index = input;
if (ioctl(pvr->dev_fd, VIDIOC_ENUMINPUT, &vin) < 0) {
MP_ERR(pvr, "can't get input (%s).\n", mp_strerror(errno));
return -1;
} else {
MP_INFO(pvr, "Video input: %s\n", vin.name);
}
} else {
MP_ERR(pvr, "can't get input (%s).\n", mp_strerror(errno));
return -1;
}
/* get current audio input */
if (ioctl(pvr->dev_fd, VIDIOC_G_AUDIO, &vaudio) == 0) {
MP_INFO(pvr, "Audio input: %s\n", vaudio.name);
} else {
MP_ERR(pvr, "can't get input (%s).\n", mp_strerror(errno));
return -1;
}
/* get current video format */
if (ioctl(pvr->dev_fd, VIDIOC_G_STD, &std) == 0) {
vs.index = 0;
while (ioctl(pvr->dev_fd, VIDIOC_ENUMSTD, &vs) >= 0) {
if (vs.id == std) {
MP_INFO(pvr, "Norm: %s.\n", vs.name);
break;
}
vs.index++;
}
} else {
MP_ERR(pvr, "can't get norm (%s)\n", mp_strerror(errno));
return -1;
}
return 0;
}
/* stream layer */
static void pvr_stream_close(stream_t *stream)
{
struct pvr_t *pvr;
if (!stream)
return;
pvr = (struct pvr_t *) stream->priv;
pvr_uninit(pvr);
}
static int pvr_stream_read(stream_t *stream, char *buffer, int size)
{
struct pollfd pfds[1];
struct pvr_t *pvr;
int rk, fd, pos;
if (!stream || !buffer)
return 0;
pvr = (struct pvr_t *) stream->priv;
fd = pvr->dev_fd;
pos = 0;
if (fd < 0)
return 0;
while (pos < size) {
pfds[0].fd = fd;
pfds[0].events = POLLIN | POLLPRI;
rk = size - pos;
int r = poll(pfds, 1, 5000);
if (r <= 0) {
if (r < 0) {
MP_ERR(pvr, "failed with '%s' when reading %d bytes\n",
mp_strerror(errno), size - pos);
} else {
MP_ERR(pvr, "timeout when trying to read from device\n");
}
break;
}
rk = read(fd, &buffer[pos], rk);
if (rk > 0) {
pos += rk;
MP_TRACE(pvr, "read (%d) bytes\n", pos);
}
}
if (!pos)
MP_ERR(pvr, "read %d bytes\n", pos);
return pos;
}
static int pvr_stream_open(stream_t *stream)
{
struct v4l2_capability vcap;
struct v4l2_ext_controls ctrls;
struct pvr_t *pvr = NULL;
pvr = pvr_init();
pvr->tv_params = stream->opts->tv_params;
pvr->log = stream->log;
pvr->params = stream->opts->stream_pvr_opts;
/**
* if the url, i.e. 'pvr://8', contains the channel, use it,
* else use the tv parameter.
*/
if (stream->url && strlen(stream->url) > 6 && stream->url[6] != '\0') {
pvr->param_channel = strdup(stream->url + 6);
} else if (pvr->tv_params->channel && strlen(pvr->tv_params->channel)) {
pvr->param_channel = strdup(pvr->tv_params->channel);
}
parse_v4l2_tv_options(pvr);
parse_encoder_options(pvr);
/* open device */
pvr->dev_fd = open(pvr->video_dev, O_RDWR | O_CLOEXEC);
MP_INFO(pvr, "Using device %s\n", pvr->video_dev);
if (pvr->dev_fd == -1) {
MP_ERR(pvr, "error opening device %s\n", pvr->video_dev);
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* query capabilities (i.e test V4L2 support) */
if (ioctl(pvr->dev_fd, VIDIOC_QUERYCAP, &vcap) < 0) {
MP_ERR(pvr, "device is not V4L2 compliant (%s).\n", mp_strerror(errno));
pvr_uninit(pvr);
return STREAM_ERROR;
} else {
MP_INFO(pvr, "Detected %s\n", vcap.card);
}
/* check for a valid V4L2 capture device */
if (!(vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
MP_ERR(pvr, "device is not a valid V4L2 capture device.\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* check for device hardware MPEG encoding capability */
ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
ctrls.count = 0;
ctrls.controls = NULL;
if (ioctl(pvr->dev_fd, VIDIOC_G_EXT_CTRLS, &ctrls) < 0) {
MP_ERR(pvr, "device do not support MPEG input.\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* list V4L2 capabilities */
if (v4l2_list_capabilities(pvr) == -1) {
MP_ERR(pvr, "can't get v4l2 capabilities\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* apply V4L2 settings */
if (set_v4l2_settings(pvr) == -1) {
MP_ERR(pvr, "can't set v4l2 settings\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* apply encoder settings */
if (set_encoder_settings(pvr) == -1) {
MP_ERR(pvr, "can't set encoder settings\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
/* display current V4L2 settings */
if (v4l2_display_settings(pvr) == -1) {
MP_ERR(pvr, "can't get v4l2 settings\n");
pvr_uninit(pvr);
return STREAM_ERROR;
}
stream->priv = pvr;
stream->fill_buffer = pvr_stream_read;
stream->close = pvr_stream_close;
stream->control = pvr_stream_control;
return STREAM_OK;
}
/* PVR Public API access */
#if 0
static const char *pvr_get_current_stationname(stream_t *stream)
{
struct pvr_t *pvr;
if (!stream || stream->type != STREAMTYPE_PVR)
return NULL;
pvr = (struct pvr_t *) stream->priv;
if (pvr->stationlist.list &&
pvr->stationlist.used > pvr->chan_idx &&
pvr->chan_idx >= 0)
return pvr->stationlist.list[pvr->chan_idx].station;
return NULL;
}
static const char *pvr_get_current_channelname(stream_t *stream)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
if (pvr->stationlist.list &&
pvr->stationlist.used > pvr->chan_idx &&
pvr->chan_idx >= 0)
return pvr->stationlist.list[pvr->chan_idx].name;
return NULL;
}
#endif
static int pvr_get_current_frequency(stream_t *stream)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
return pvr->freq;
}
static int pvr_set_channel(stream_t *stream, const char *channel)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
return set_station_by_channelname_or_freq(pvr, channel, -1, 1);
}
static int pvr_set_lastchannel(stream_t *stream)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
if (pvr->stationlist.list &&
pvr->stationlist.used > pvr->chan_idx_last &&
pvr->chan_idx_last >= 0)
return set_station_by_channelname_or_freq(
pvr, pvr->stationlist.list[pvr->chan_idx_last].name, -1, 1);
return -1;
}
static int pvr_set_freq(stream_t *stream, int freq)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
return set_station_by_channelname_or_freq(pvr, NULL, freq, 1);
}
static int pvr_set_channel_step(stream_t *stream, int step)
{
struct pvr_t *pvr = (struct pvr_t *) stream->priv;
return set_station_by_step(pvr, step, 1);
}
static int pvr_stream_control(struct stream *s, int cmd, void *arg)
{
switch (cmd) {
case STREAM_CTRL_SET_TV_FREQ:
pvr_set_freq(s, (int)(*(float *)arg + 0.5f));
return STREAM_OK;
case STREAM_CTRL_GET_TV_FREQ:
*(float *)arg = pvr_get_current_frequency(s);
return STREAM_OK;
case STREAM_CTRL_TV_SET_CHAN:
pvr_set_channel(s, (char *)arg);
return STREAM_OK;
case STREAM_CTRL_TV_STEP_CHAN:
pvr_set_channel_step(s, *(int *)arg);
return STREAM_OK;
case STREAM_CTRL_TV_LAST_CHAN:
pvr_set_lastchannel(s);
return STREAM_OK;
}
return STREAM_UNSUPPORTED;
}
const stream_info_t stream_info_pvr = {
.name = "pvr",
.open = pvr_stream_open,
.protocols = (const char *const[]){ "pvr", NULL },
};
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