kopia lustrzana https://github.com/Hamlib/Hamlib
388 wiersze
8.8 KiB
C
388 wiersze
8.8 KiB
C
/*
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* Hamlib Tuner backend - Video4Linux (v1) description
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* Copyright (c) 2004-2010 by Stephane Fillod
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdlib.h>
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#include <string.h> /* String function definitions */
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#include <unistd.h> /* UNIX standard function definitions */
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#include <math.h>
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#include <errno.h>
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#include "hamlib/rig.h"
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#include "tuner.h" /* include config.h */
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#include "misc.h"
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef V4L_IOCTL
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#include <stdlib.h>
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#include "idx_builtin.h"
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#define V4L_FUNC (RIG_FUNC_MUTE)
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#define V4L_LEVEL_ALL (RIG_LEVEL_AF|RIG_LEVEL_RAWSTR)
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#define V4L_PARM_ALL (RIG_PARM_NONE)
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#define V4L_VFO (RIG_VFO_A)
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/* FIXME: per card measures? */
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#define V4L_STR_CAL { 2, { \
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{ 0, -60 }, \
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{ 65535, 60 }, \
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} }
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static int v4l_init(RIG *rig);
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static int v4l_open(RIG *rig);
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static int v4l_set_freq(RIG *rig, vfo_t vfo, freq_t freq);
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static int v4l_get_freq(RIG *rig, vfo_t vfo, freq_t *freq);
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static int v4l_set_func(RIG *rig, vfo_t vfo, setting_t func, int status);
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static int v4l_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status);
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static int v4l_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val);
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static int v4l_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val);
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static const char *v4l_get_info(RIG *rig);
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/*
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* v4l (v1) rig capabilities.
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*
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*
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*/
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const struct rig_caps v4l_caps = {
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.rig_model = RIG_MODEL_V4L,
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.model_name = "SW/FM radio",
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.mfg_name = "Video4Linux",
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.version = "0.2.1",
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.copyright = "LGPL",
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.status = RIG_STATUS_BETA,
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.rig_type = RIG_TYPE_PCRECEIVER,
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.ptt_type = RIG_PTT_NONE,
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.dcd_type = RIG_DCD_NONE,
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.port_type = RIG_PORT_DEVICE,
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.write_delay = 0,
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.post_write_delay = 0,
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.timeout = 2000,
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.retry = 1,
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.has_get_func = V4L_FUNC,
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.has_set_func = V4L_FUNC,
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.has_get_level = V4L_LEVEL_ALL,
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.has_set_level = RIG_LEVEL_SET(V4L_LEVEL_ALL),
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.has_get_parm = V4L_PARM_ALL,
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.has_set_parm = RIG_PARM_SET(V4L_PARM_ALL),
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.vfo_ops = RIG_OP_NONE,
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.level_gran = {
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[LVL_RAWSTR] = { .min = { .i = 0 }, .max = { .i = 65535 } },
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},
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.preamp = { RIG_DBLST_END },
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.attenuator = { RIG_DBLST_END },
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.max_rit = Hz(0),
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.max_xit = Hz(0),
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.max_ifshift = Hz(0),
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.targetable_vfo = 0,
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.transceive = RIG_TRN_OFF,
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.bank_qty = 0,
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.chan_desc_sz = 0,
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.chan_list = { RIG_CHAN_END, },
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/* will be rewritten at runtime */
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.rx_range_list1 = {
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{MHz(87.9),MHz(108.9),RIG_MODE_WFM,-1,-1,V4L_VFO},
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RIG_FRNG_END,
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},
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.tx_range_list1 = { RIG_FRNG_END, },
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.rx_range_list2 = {
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{MHz(87.9),MHz(108.9),RIG_MODE_WFM,-1,-1,V4L_VFO},
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RIG_FRNG_END,
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},
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.tx_range_list2 = { RIG_FRNG_END, },
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.tuning_steps = {
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{RIG_MODE_WFM,100},
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RIG_TS_END,
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},
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/* mode/filter list, remember: order matters! */
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.filters = {
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{RIG_MODE_WFM, kHz(230)}, /* guess */
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{RIG_MODE_AM, kHz(8)}, /* guess */
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RIG_FLT_END,
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},
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.str_cal = V4L_STR_CAL,
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.rig_init = v4l_init,
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.rig_open = v4l_open,
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.set_freq = v4l_set_freq,
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.get_freq = v4l_get_freq,
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.set_func = v4l_set_func,
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.get_func = v4l_get_func,
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.set_level = v4l_set_level,
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.get_level = v4l_get_level,
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.get_info = v4l_get_info,
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};
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/*
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* Function definitions below
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*/
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#include "videodev.h"
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#define DEFAULT_V4L_PATH "/dev/radio0"
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int v4l_init(RIG *rig)
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{
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rig->state.rigport.type.rig = RIG_PORT_DEVICE;
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strncpy(rig->state.rigport.pathname, DEFAULT_V4L_PATH, FILPATHLEN - 1);
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return RIG_OK;
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}
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int v4l_open(RIG *rig)
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{
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int ret, i;
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struct video_tuner vt;
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struct rig_state *rs = &rig->state;
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double fact;
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for (i=0; i<8; i++) {
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vt.tuner = i;
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ret = ioctl(rig->state.rigport.fd, VIDIOCGTUNER, &vt);
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if (ret < 0)
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break;
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fact = (vt.flags & VIDEO_TUNER_LOW) == 0 ? 16 : 16000;
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rs->rx_range_list[i].start = vt.rangelow/fact;
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rs->rx_range_list[i].end = vt.rangehigh/fact;
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rs->rx_range_list[i].modes = vt.rangehigh/fact < MHz(30) ? RIG_MODE_AM : RIG_MODE_WFM;
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/* hack! hack! store the resolution in low_power! */
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rs->rx_range_list[i].low_power = rint(fact);
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}
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return RIG_OK;
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}
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int v4l_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
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{
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struct rig_state *rs = &rig->state;
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struct video_tuner vt;
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const freq_range_t *range;
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unsigned long f;
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double fact;
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int ret;
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/* AM or WFM */
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range = rig_get_range (rs->rx_range_list, freq, RIG_MODE_AM|RIG_MODE_WFM);
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if (!range)
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return -RIG_ECONF;
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/* at this point, we are trying to tune to a frequency */
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vt.tuner = (rs->rx_range_list-range)/sizeof(freq_range_t);
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ret = ioctl(rig->state.rigport.fd, VIDIOCSTUNER, &vt); /* set tuner # */
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCSTUNER: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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fact = range->low_power;
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f = rint(freq * fact); /* rounding to nearest int */
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ret = ioctl(rig->state.rigport.fd, VIDIOCSFREQ, &f);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCSFREQ: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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return RIG_OK;
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}
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int v4l_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
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{
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struct rig_state *rs = &rig->state;
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const freq_range_t *range;
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unsigned long f;
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double fact;
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int ret;
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ret = ioctl(rig->state.rigport.fd, VIDIOCGFREQ, &f);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGFREQ: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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/* FIXME: remember tuner and current *fact* */
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range = rig_get_range (rs->rx_range_list, f/16, RIG_MODE_AM|RIG_MODE_WFM);
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if (!range)
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return -RIG_ECONF;
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fact = range->low_power;
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*freq = f/fact;
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return RIG_OK;
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}
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int v4l_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
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{
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struct video_audio va;
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int ret;
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switch ( func ) {
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case RIG_FUNC_MUTE:
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ret = ioctl(rig->state.rigport.fd, VIDIOCGAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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va.flags = status ? VIDEO_AUDIO_MUTE : 0;
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ret = ioctl(rig->state.rigport.fd, VIDIOCSAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCSAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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break;
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default:
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return -RIG_EINVAL;
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}
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return RIG_OK;
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}
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int v4l_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status)
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{
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struct video_audio va;
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int ret;
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switch ( func ) {
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case RIG_FUNC_MUTE:
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ret = ioctl(rig->state.rigport.fd, VIDIOCGAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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*status = (va.flags & VIDEO_AUDIO_MUTE) == VIDEO_AUDIO_MUTE ;
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break;
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default:
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return -RIG_EINVAL;
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}
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return RIG_OK;
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}
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int v4l_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
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{
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struct video_audio va;
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int ret;
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ret = ioctl(rig->state.rigport.fd, VIDIOCGAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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switch ( level ) {
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case RIG_LEVEL_AF:
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va.volume = val.f * 65535;
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break;
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default:
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return -RIG_EINVAL;
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}
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ret = ioctl(rig->state.rigport.fd, VIDIOCSAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCSAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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return RIG_OK;
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}
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int v4l_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
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{
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struct video_audio va;
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struct video_tuner vt;
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int ret;
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switch ( level ) {
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case RIG_LEVEL_AF:
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ret = ioctl(rig->state.rigport.fd, VIDIOCGAUDIO, &va);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGAUDIO: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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val->f = (float)va.volume / 65535.;
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break;
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case RIG_LEVEL_RAWSTR:
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ret = ioctl(rig->state.rigport.fd, VIDIOCGTUNER, &vt); /* get info */
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGTUNER: %s\n",
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strerror(errno));
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return -RIG_EIO;
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}
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val->i = vt.signal;
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break;
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default:
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return -RIG_EINVAL;
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}
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return RIG_OK;
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}
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/*
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* FIXME: static buf does not allow reentrancy!
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*/
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const char *v4l_get_info(RIG *rig)
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{
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static struct video_tuner vt;
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int ret;
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vt.tuner = 0;
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ret = ioctl(rig->state.rigport.fd, VIDIOCGTUNER, &vt);
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if (ret < 0) {
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rig_debug(RIG_DEBUG_ERR, "ioctl VIDIOCGTUNER: %s\n",
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strerror(errno));
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return "Get info failed";
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}
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return vt.name;
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}
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#endif /* V4L_IOCTL */
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