diff options
Diffstat (limited to '1.2-netsec/channels/chan_alsa.c')
| -rw-r--r-- | 1.2-netsec/channels/chan_alsa.c | 1140 |
1 files changed, 0 insertions, 1140 deletions
diff --git a/1.2-netsec/channels/chan_alsa.c b/1.2-netsec/channels/chan_alsa.c deleted file mode 100644 index 6f0d36070..000000000 --- a/1.2-netsec/channels/chan_alsa.c +++ /dev/null @@ -1,1140 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * By Matthew Fredrickson <creslin@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * \brief ALSA sound card channel driver - * - * \par See also - * \arg Config_alsa - * - * \ingroup channel_drivers - */ - - -#include <unistd.h> -#include <fcntl.h> -#include <errno.h> -#include <sys/ioctl.h> -#include <sys/time.h> -#include <string.h> -#include <stdlib.h> -#include <stdio.h> - -#define ALSA_PCM_NEW_HW_PARAMS_API -#define ALSA_PCM_NEW_SW_PARAMS_API -#include <alsa/asoundlib.h> - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include "asterisk/frame.h" -#include "asterisk/logger.h" -#include "asterisk/channel.h" -#include "asterisk/module.h" -#include "asterisk/options.h" -#include "asterisk/pbx.h" -#include "asterisk/config.h" -#include "asterisk/cli.h" -#include "asterisk/utils.h" -#include "asterisk/causes.h" -#include "asterisk/endian.h" - -#include "busy.h" -#include "ringtone.h" -#include "ring10.h" -#include "answer.h" - -#ifdef ALSA_MONITOR -#include "alsa-monitor.h" -#endif - -#define DEBUG 0 -/* Which device to use */ -#define ALSA_INDEV "default" -#define ALSA_OUTDEV "default" -#define DESIRED_RATE 8000 - -/* Lets use 160 sample frames, just like GSM. */ -#define FRAME_SIZE 160 -#define PERIOD_FRAMES 80 /* 80 Frames, at 2 bytes each */ - -/* When you set the frame size, you have to come up with - the right buffer format as well. */ -/* 5 64-byte frames = one frame */ -#define BUFFER_FMT ((buffersize * 10) << 16) | (0x0006); - -/* Don't switch between read/write modes faster than every 300 ms */ -#define MIN_SWITCH_TIME 600 - -#if __BYTE_ORDER == __LITTLE_ENDIAN -static snd_pcm_format_t format = SND_PCM_FORMAT_S16_LE; -#else -static snd_pcm_format_t format = SND_PCM_FORMAT_S16_BE; -#endif - -/* static int block = O_NONBLOCK; */ -static char indevname[50] = ALSA_INDEV; -static char outdevname[50] = ALSA_OUTDEV; - -#if 0 -static struct timeval lasttime; -#endif - -static int usecnt; -static int silencesuppression = 0; -static int silencethreshold = 1000; - -AST_MUTEX_DEFINE_STATIC(usecnt_lock); -AST_MUTEX_DEFINE_STATIC(alsalock); - -static const char type[] = "Console"; -static const char desc[] = "ALSA Console Channel Driver"; -static const char tdesc[] = "ALSA Console Channel Driver"; -static const char config[] = "alsa.conf"; - -static char context[AST_MAX_CONTEXT] = "default"; -static char language[MAX_LANGUAGE] = ""; -static char exten[AST_MAX_EXTENSION] = "s"; - -static int hookstate=0; - -static short silence[FRAME_SIZE] = {0, }; - -struct sound { - int ind; - short *data; - int datalen; - int samplen; - int silencelen; - int repeat; -}; - -static struct sound sounds[] = { - { AST_CONTROL_RINGING, ringtone, sizeof(ringtone)/2, 16000, 32000, 1 }, - { AST_CONTROL_BUSY, busy, sizeof(busy)/2, 4000, 4000, 1 }, - { AST_CONTROL_CONGESTION, busy, sizeof(busy)/2, 2000, 2000, 1 }, - { AST_CONTROL_RING, ring10, sizeof(ring10)/2, 16000, 32000, 1 }, - { AST_CONTROL_ANSWER, answer, sizeof(answer)/2, 2200, 0, 0 }, -}; - -/* Sound command pipe */ -static int sndcmd[2]; - -static struct chan_alsa_pvt { - /* We only have one ALSA structure -- near sighted perhaps, but it - keeps this driver as simple as possible -- as it should be. */ - struct ast_channel *owner; - char exten[AST_MAX_EXTENSION]; - char context[AST_MAX_CONTEXT]; -#if 0 - snd_pcm_t *card; -#endif - snd_pcm_t *icard, *ocard; - -} alsa; - -/* Number of buffers... Each is FRAMESIZE/8 ms long. For example - with 160 sample frames, and a buffer size of 3, we have a 60ms buffer, - usually plenty. */ - -pthread_t sthread; - -#define MAX_BUFFER_SIZE 100 - -/* File descriptors for sound device */ -static int readdev = -1; -static int writedev = -1; - -static int autoanswer = 1; - -static int cursound = -1; -static int sampsent = 0; -static int silencelen=0; -static int offset=0; -static int nosound=0; - -/* ZZ */ -static struct ast_channel *alsa_request(const char *type, int format, void *data, int *cause); -static int alsa_digit(struct ast_channel *c, char digit); -static int alsa_text(struct ast_channel *c, const char *text); -static int alsa_hangup(struct ast_channel *c); -static int alsa_answer(struct ast_channel *c); -static struct ast_frame *alsa_read(struct ast_channel *chan); -static int alsa_call(struct ast_channel *c, char *dest, int timeout); -static int alsa_write(struct ast_channel *chan, struct ast_frame *f); -static int alsa_indicate(struct ast_channel *chan, int cond); -static int alsa_fixup(struct ast_channel *oldchan, struct ast_channel *newchan); - -static const struct ast_channel_tech alsa_tech = { - .type = type, - .description = tdesc, - .capabilities = AST_FORMAT_SLINEAR, - .requester = alsa_request, - .send_digit = alsa_digit, - .send_text = alsa_text, - .hangup = alsa_hangup, - .answer = alsa_answer, - .read = alsa_read, - .call = alsa_call, - .write = alsa_write, - .indicate = alsa_indicate, - .fixup = alsa_fixup, -}; - -static int send_sound(void) -{ - short myframe[FRAME_SIZE]; - int total = FRAME_SIZE; - short *frame = NULL; - int amt=0; - int res; - int myoff; - snd_pcm_state_t state; - - if (cursound > -1) { - res = total; - if (sampsent < sounds[cursound].samplen) { - myoff=0; - while(total) { - amt = total; - if (amt > (sounds[cursound].datalen - offset)) - amt = sounds[cursound].datalen - offset; - memcpy(myframe + myoff, sounds[cursound].data + offset, amt * 2); - total -= amt; - offset += amt; - sampsent += amt; - myoff += amt; - if (offset >= sounds[cursound].datalen) - offset = 0; - } - /* Set it up for silence */ - if (sampsent >= sounds[cursound].samplen) - silencelen = sounds[cursound].silencelen; - frame = myframe; - } else { - if (silencelen > 0) { - frame = silence; - silencelen -= res; - } else { - if (sounds[cursound].repeat) { - /* Start over */ - sampsent = 0; - offset = 0; - } else { - cursound = -1; - nosound = 0; - } - return 0; - } - } - - if (res == 0 || !frame) { - return 0; - } -#ifdef ALSA_MONITOR - alsa_monitor_write((char *)frame, res * 2); -#endif - state = snd_pcm_state(alsa.ocard); - if (state == SND_PCM_STATE_XRUN) { - snd_pcm_prepare(alsa.ocard); - } - res = snd_pcm_writei(alsa.ocard, frame, res); - if (res > 0) - return 0; - return 0; - } - return 0; -} - -static void *sound_thread(void *unused) -{ - fd_set rfds; - fd_set wfds; - int max; - int res; - for(;;) { - FD_ZERO(&rfds); - FD_ZERO(&wfds); - max = sndcmd[0]; - FD_SET(sndcmd[0], &rfds); - if (cursound > -1) { - FD_SET(writedev, &wfds); - if (writedev > max) - max = writedev; - } -#ifdef ALSA_MONITOR - if (!alsa.owner) { - FD_SET(readdev, &rfds); - if (readdev > max) - max = readdev; - } -#endif - res = ast_select(max + 1, &rfds, &wfds, NULL, NULL); - if (res < 1) { - ast_log(LOG_WARNING, "select failed: %s\n", strerror(errno)); - continue; - } -#ifdef ALSA_MONITOR - if (FD_ISSET(readdev, &rfds)) { - /* Keep the pipe going with read audio */ - snd_pcm_state_t state; - short buf[FRAME_SIZE]; - int r; - - state = snd_pcm_state(alsa.ocard); - if (state == SND_PCM_STATE_XRUN) { - snd_pcm_prepare(alsa.ocard); - } - r = snd_pcm_readi(alsa.icard, buf, FRAME_SIZE); - if (r == -EPIPE) { -#if DEBUG - ast_log(LOG_ERROR, "XRUN read\n"); -#endif - snd_pcm_prepare(alsa.icard); - } else if (r == -ESTRPIPE) { - ast_log(LOG_ERROR, "-ESTRPIPE\n"); - snd_pcm_prepare(alsa.icard); - } else if (r < 0) { - ast_log(LOG_ERROR, "Read error: %s\n", snd_strerror(r)); - } else - alsa_monitor_read((char *)buf, r * 2); - } -#endif - if (FD_ISSET(sndcmd[0], &rfds)) { - read(sndcmd[0], &cursound, sizeof(cursound)); - silencelen = 0; - offset = 0; - sampsent = 0; - } - if (FD_ISSET(writedev, &wfds)) - if (send_sound()) - ast_log(LOG_WARNING, "Failed to write sound\n"); - } - /* Never reached */ - return NULL; -} - -static snd_pcm_t *alsa_card_init(char *dev, snd_pcm_stream_t stream) -{ - int err; - int direction; - snd_pcm_t *handle = NULL; - snd_pcm_hw_params_t *hwparams = NULL; - snd_pcm_sw_params_t *swparams = NULL; - struct pollfd pfd; - snd_pcm_uframes_t period_size = PERIOD_FRAMES * 4; - /* int period_bytes = 0; */ - snd_pcm_uframes_t buffer_size = 0; - - unsigned int rate = DESIRED_RATE; -#if 0 - unsigned int per_min = 1; -#endif - /* unsigned int per_max = 8; */ - snd_pcm_uframes_t start_threshold, stop_threshold; - - err = snd_pcm_open(&handle, dev, stream, O_NONBLOCK); - if (err < 0) { - ast_log(LOG_ERROR, "snd_pcm_open failed: %s\n", snd_strerror(err)); - return NULL; - } else { - ast_log(LOG_DEBUG, "Opening device %s in %s mode\n", dev, (stream == SND_PCM_STREAM_CAPTURE) ? "read" : "write"); - } - - snd_pcm_hw_params_alloca(&hwparams); - snd_pcm_hw_params_any(handle, hwparams); - - err = snd_pcm_hw_params_set_access(handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED); - if (err < 0) { - ast_log(LOG_ERROR, "set_access failed: %s\n", snd_strerror(err)); - } - - err = snd_pcm_hw_params_set_format(handle, hwparams, format); - if (err < 0) { - ast_log(LOG_ERROR, "set_format failed: %s\n", snd_strerror(err)); - } - - err = snd_pcm_hw_params_set_channels(handle, hwparams, 1); - if (err < 0) { - ast_log(LOG_ERROR, "set_channels failed: %s\n", snd_strerror(err)); - } - - direction = 0; - err = snd_pcm_hw_params_set_rate_near(handle, hwparams, &rate, &direction); - if (rate != DESIRED_RATE) { - ast_log(LOG_WARNING, "Rate not correct, requested %d, got %d\n", DESIRED_RATE, rate); - } - - direction = 0; - err = snd_pcm_hw_params_set_period_size_near(handle, hwparams, &period_size, &direction); - if (err < 0) { - ast_log(LOG_ERROR, "period_size(%ld frames) is bad: %s\n", period_size, snd_strerror(err)); - } else { - ast_log(LOG_DEBUG, "Period size is %d\n", err); - } - - buffer_size = 4096 * 2; /* period_size * 16; */ - err = snd_pcm_hw_params_set_buffer_size_near(handle, hwparams, &buffer_size); - if (err < 0) { - ast_log(LOG_WARNING, "Problem setting buffer size of %ld: %s\n", buffer_size, snd_strerror(err)); - } else { - ast_log(LOG_DEBUG, "Buffer size is set to %d frames\n", err); - } - -#if 0 - direction = 0; - err = snd_pcm_hw_params_set_periods_min(handle, hwparams, &per_min, &direction); - if (err < 0) { - ast_log(LOG_ERROR, "periods_min: %s\n", snd_strerror(err)); - } - - err = snd_pcm_hw_params_set_periods_max(handle, hwparams, &per_max, 0); - if (err < 0) { - ast_log(LOG_ERROR, "periods_max: %s\n", snd_strerror(err)); - } -#endif - - err = snd_pcm_hw_params(handle, hwparams); - if (err < 0) { - ast_log(LOG_ERROR, "Couldn't set the new hw params: %s\n", snd_strerror(err)); - } - - snd_pcm_sw_params_alloca(&swparams); - snd_pcm_sw_params_current(handle, swparams); - -#if 1 - if (stream == SND_PCM_STREAM_PLAYBACK) { - start_threshold = period_size; - } else { - start_threshold = 1; - } - - err = snd_pcm_sw_params_set_start_threshold(handle, swparams, start_threshold); - if (err < 0) { - ast_log(LOG_ERROR, "start threshold: %s\n", snd_strerror(err)); - } -#endif - -#if 1 - if (stream == SND_PCM_STREAM_PLAYBACK) { - stop_threshold = buffer_size; - } else { - stop_threshold = buffer_size; - } - err = snd_pcm_sw_params_set_stop_threshold(handle, swparams, stop_threshold); - if (err < 0) { - ast_log(LOG_ERROR, "stop threshold: %s\n", snd_strerror(err)); - } -#endif -#if 0 - err = snd_pcm_sw_params_set_xfer_align(handle, swparams, PERIOD_FRAMES); - if (err < 0) { - ast_log(LOG_ERROR, "Unable to set xfer alignment: %s\n", snd_strerror(err)); - } -#endif - -#if 0 - err = snd_pcm_sw_params_set_silence_threshold(handle, swparams, silencethreshold); - if (err < 0) { - ast_log(LOG_ERROR, "Unable to set silence threshold: %s\n", snd_strerror(err)); - } -#endif - err = snd_pcm_sw_params(handle, swparams); - if (err < 0) { - ast_log(LOG_ERROR, "sw_params: %s\n", snd_strerror(err)); - } - - err = snd_pcm_poll_descriptors_count(handle); - if (err <= 0) { - ast_log(LOG_ERROR, "Unable to get a poll descriptors count, error is %s\n", snd_strerror(err)); - } - - if (err != 1) { - ast_log(LOG_DEBUG, "Can't handle more than one device\n"); - } - - snd_pcm_poll_descriptors(handle, &pfd, err); - ast_log(LOG_DEBUG, "Acquired fd %d from the poll descriptor\n", pfd.fd); - - if (stream == SND_PCM_STREAM_CAPTURE) - readdev = pfd.fd; - else - writedev = pfd.fd; - - return handle; -} - -static int soundcard_init(void) -{ - alsa.icard = alsa_card_init(indevname, SND_PCM_STREAM_CAPTURE); - alsa.ocard = alsa_card_init(outdevname, SND_PCM_STREAM_PLAYBACK); - - if (!alsa.icard || !alsa.ocard) { - ast_log(LOG_ERROR, "Problem opening alsa I/O devices\n"); - return -1; - } - - return readdev; -} - -static int alsa_digit(struct ast_channel *c, char digit) -{ - ast_mutex_lock(&alsalock); - ast_verbose( " << Console Received digit %c >> \n", digit); - ast_mutex_unlock(&alsalock); - return 0; -} - -static int alsa_text(struct ast_channel *c, const char *text) -{ - ast_mutex_lock(&alsalock); - ast_verbose( " << Console Received text %s >> \n", text); - ast_mutex_unlock(&alsalock); - return 0; -} - -static void grab_owner(void) -{ - while(alsa.owner && ast_mutex_trylock(&alsa.owner->lock)) { - ast_mutex_unlock(&alsalock); - usleep(1); - ast_mutex_lock(&alsalock); - } -} - -static int alsa_call(struct ast_channel *c, char *dest, int timeout) -{ - int res = 3; - struct ast_frame f = { AST_FRAME_CONTROL }; - ast_mutex_lock(&alsalock); - ast_verbose( " << Call placed to '%s' on console >> \n", dest); - if (autoanswer) { - ast_verbose( " << Auto-answered >> \n" ); - grab_owner(); - if (alsa.owner) { - f.subclass = AST_CONTROL_ANSWER; - ast_queue_frame(alsa.owner, &f); - ast_mutex_unlock(&alsa.owner->lock); - } - } else { - ast_verbose( " << Type 'answer' to answer, or use 'autoanswer' for future calls >> \n"); - grab_owner(); - if (alsa.owner) { - f.subclass = AST_CONTROL_RINGING; - ast_queue_frame(alsa.owner, &f); - ast_mutex_unlock(&alsa.owner->lock); - } - write(sndcmd[1], &res, sizeof(res)); - } - snd_pcm_prepare(alsa.icard); - snd_pcm_start(alsa.icard); - ast_mutex_unlock(&alsalock); - return 0; -} - -static void answer_sound(void) -{ - int res; - nosound = 1; - res = 4; - write(sndcmd[1], &res, sizeof(res)); - -} - -static int alsa_answer(struct ast_channel *c) -{ - ast_mutex_lock(&alsalock); - ast_verbose( " << Console call has been answered >> \n"); - answer_sound(); - ast_setstate(c, AST_STATE_UP); - cursound = -1; - snd_pcm_prepare(alsa.icard); - snd_pcm_start(alsa.icard); - ast_mutex_unlock(&alsalock); - return 0; -} - -static int alsa_hangup(struct ast_channel *c) -{ - int res; - ast_mutex_lock(&alsalock); - cursound = -1; - c->tech_pvt = NULL; - alsa.owner = NULL; - ast_verbose( " << Hangup on console >> \n"); - ast_mutex_lock(&usecnt_lock); - usecnt--; - ast_mutex_unlock(&usecnt_lock); - if (hookstate) { - if (autoanswer) { - hookstate = 0; - } else { - /* Congestion noise */ - res = 2; - write(sndcmd[1], &res, sizeof(res)); - hookstate = 0; - } - } - snd_pcm_drop(alsa.icard); - ast_mutex_unlock(&alsalock); - return 0; -} - -static int alsa_write(struct ast_channel *chan, struct ast_frame *f) -{ - static char sizbuf[8000]; - static int sizpos = 0; - int len = sizpos; - int pos; - int res = 0; - /* size_t frames = 0; */ - snd_pcm_state_t state; - /* Immediately return if no sound is enabled */ - if (nosound) - return 0; - ast_mutex_lock(&alsalock); - /* Stop any currently playing sound */ - if (cursound != -1) { - snd_pcm_drop(alsa.ocard); - snd_pcm_prepare(alsa.ocard); - cursound = -1; - } - - - /* We have to digest the frame in 160-byte portions */ - if (f->datalen > sizeof(sizbuf) - sizpos) { - ast_log(LOG_WARNING, "Frame too large\n"); - res = -1; - } else { - memcpy(sizbuf + sizpos, f->data, f->datalen); - len += f->datalen; - pos = 0; -#ifdef ALSA_MONITOR - alsa_monitor_write(sizbuf, len); -#endif - state = snd_pcm_state(alsa.ocard); - if (state == SND_PCM_STATE_XRUN) { - snd_pcm_prepare(alsa.ocard); - } - res = snd_pcm_writei(alsa.ocard, sizbuf, len/2); - if (res == -EPIPE) { -#if DEBUG - ast_log(LOG_DEBUG, "XRUN write\n"); -#endif - snd_pcm_prepare(alsa.ocard); - res = snd_pcm_writei(alsa.ocard, sizbuf, len/2); - if (res != len/2) { - ast_log(LOG_ERROR, "Write error: %s\n", snd_strerror(res)); - res = -1; - } else if (res < 0) { - ast_log(LOG_ERROR, "Write error %s\n", snd_strerror(res)); - res = -1; - } - } else { - if (res == -ESTRPIPE) { - ast_log(LOG_ERROR, "You've got some big problems\n"); - } else if (res < 0) - ast_log(LOG_NOTICE, "Error %d on write\n", res); - } - } - ast_mutex_unlock(&alsalock); - if (res > 0) - res = 0; - return res; -} - - -static struct ast_frame *alsa_read(struct ast_channel *chan) -{ - static struct ast_frame f; - static short __buf[FRAME_SIZE + AST_FRIENDLY_OFFSET/2]; - short *buf; - static int readpos = 0; - static int left = FRAME_SIZE; - snd_pcm_state_t state; - int r = 0; - int off = 0; - - ast_mutex_lock(&alsalock); - /* Acknowledge any pending cmd */ - f.frametype = AST_FRAME_NULL; - f.subclass = 0; - f.samples = 0; - f.datalen = 0; - f.data = NULL; - f.offset = 0; - f.src = type; - f.mallocd = 0; - f.delivery.tv_sec = 0; - f.delivery.tv_usec = 0; - - state = snd_pcm_state(alsa.icard); - if ((state != SND_PCM_STATE_PREPARED) && - (state != SND_PCM_STATE_RUNNING)) { - snd_pcm_prepare(alsa.icard); - } - - buf = __buf + AST_FRIENDLY_OFFSET/2; - - r = snd_pcm_readi(alsa.icard, buf + readpos, left); - if (r == -EPIPE) { -#if DEBUG - ast_log(LOG_ERROR, "XRUN read\n"); -#endif - snd_pcm_prepare(alsa.icard); - } else if (r == -ESTRPIPE) { - ast_log(LOG_ERROR, "-ESTRPIPE\n"); - snd_pcm_prepare(alsa.icard); - } else if (r < 0) { - ast_log(LOG_ERROR, "Read error: %s\n", snd_strerror(r)); - } else if (r >= 0) { - off -= r; - } - /* Update positions */ - readpos += r; - left -= r; - - if (readpos >= FRAME_SIZE) { - /* A real frame */ - readpos = 0; - left = FRAME_SIZE; - if (chan->_state != AST_STATE_UP) { - /* Don't transmit unless it's up */ - ast_mutex_unlock(&alsalock); - return &f; - } - f.frametype = AST_FRAME_VOICE; - f.subclass = AST_FORMAT_SLINEAR; - f.samples = FRAME_SIZE; - f.datalen = FRAME_SIZE * 2; - f.data = buf; - f.offset = AST_FRIENDLY_OFFSET; - f.src = type; - f.mallocd = 0; -#ifdef ALSA_MONITOR - alsa_monitor_read((char *)buf, FRAME_SIZE * 2); -#endif - - } - ast_mutex_unlock(&alsalock); - return &f; -} - -static int alsa_fixup(struct ast_channel *oldchan, struct ast_channel *newchan) -{ - struct chan_alsa_pvt *p = newchan->tech_pvt; - ast_mutex_lock(&alsalock); - p->owner = newchan; - ast_mutex_unlock(&alsalock); - return 0; -} - -static int alsa_indicate(struct ast_channel *chan, int cond) -{ - int res = 0; - ast_mutex_lock(&alsalock); - switch(cond) { - case AST_CONTROL_BUSY: - res = 1; - break; - case AST_CONTROL_CONGESTION: - res = 2; - break; - case AST_CONTROL_RINGING: - res = 0; - break; - case -1: - res = -1; - break; - case AST_CONTROL_VIDUPDATE: - res = -1; - break; - default: - ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", cond, chan->name); - res = -1; - } - if (res > -1) { - write(sndcmd[1], &res, sizeof(res)); - } - ast_mutex_unlock(&alsalock); - return res; -} - -static struct ast_channel *alsa_new(struct chan_alsa_pvt *p, int state) -{ - struct ast_channel *tmp; - tmp = ast_channel_alloc(1); - if (tmp) { - tmp->tech = &alsa_tech; - snprintf(tmp->name, sizeof(tmp->name), "ALSA/%s", indevname); - tmp->type = type; - tmp->fds[0] = readdev; - tmp->nativeformats = AST_FORMAT_SLINEAR; - tmp->readformat = AST_FORMAT_SLINEAR; - tmp->writeformat = AST_FORMAT_SLINEAR; - tmp->tech_pvt = p; - if (!ast_strlen_zero(p->context)) - ast_copy_string(tmp->context, p->context, sizeof(tmp->context)); - if (!ast_strlen_zero(p->exten)) - ast_copy_string(tmp->exten, p->exten, sizeof(tmp->exten)); - if (!ast_strlen_zero(language)) - ast_copy_string(tmp->language, language, sizeof(tmp->language)); - p->owner = tmp; - ast_setstate(tmp, state); - ast_mutex_lock(&usecnt_lock); - usecnt++; - ast_mutex_unlock(&usecnt_lock); - ast_update_use_count(); - if (state != AST_STATE_DOWN) { - if (ast_pbx_start(tmp)) { - ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name); - ast_hangup(tmp); - tmp = NULL; - } - } - } - return tmp; -} - -static struct ast_channel *alsa_request(const char *type, int format, void *data, int *cause) -{ - int oldformat = format; - struct ast_channel *tmp=NULL; - format &= AST_FORMAT_SLINEAR; - if (!format) { - ast_log(LOG_NOTICE, "Asked to get a channel of format '%d'\n", oldformat); - return NULL; - } - ast_mutex_lock(&alsalock); - if (alsa.owner) { - ast_log(LOG_NOTICE, "Already have a call on the ALSA channel\n"); - *cause = AST_CAUSE_BUSY; - } else { - tmp= alsa_new(&alsa, AST_STATE_DOWN); - if (!tmp) { - ast_log(LOG_WARNING, "Unable to create new ALSA channel\n"); - } - } - ast_mutex_unlock(&alsalock); - return tmp; -} - -static int console_autoanswer(int fd, int argc, char *argv[]) -{ - int res = RESULT_SUCCESS;; - if ((argc != 1) && (argc != 2)) - return RESULT_SHOWUSAGE; - ast_mutex_lock(&alsalock); - if (argc == 1) { - ast_cli(fd, "Auto answer is %s.\n", autoanswer ? "on" : "off"); - } else { - if (!strcasecmp(argv[1], "on")) - autoanswer = -1; - else if (!strcasecmp(argv[1], "off")) - autoanswer = 0; - else - res = RESULT_SHOWUSAGE; - } - ast_mutex_unlock(&alsalock); - return res; -} - -static char *autoanswer_complete(char *line, char *word, int pos, int state) -{ -#ifndef MIN -#define MIN(a,b) ((a) < (b) ? (a) : (b)) -#endif - switch(state) { - case 0: - if (!ast_strlen_zero(word) && !strncasecmp(word, "on", MIN(strlen(word), 2))) - return strdup("on"); - case 1: - if (!ast_strlen_zero(word) && !strncasecmp(word, "off", MIN(strlen(word), 3))) - return strdup("off"); - default: - return NULL; - } - return NULL; -} - -static char autoanswer_usage[] = -"Usage: autoanswer [on|off]\n" -" Enables or disables autoanswer feature. If used without\n" -" argument, displays the current on/off status of autoanswer.\n" -" The default value of autoanswer is in 'alsa.conf'.\n"; - -static int console_answer(int fd, int argc, char *argv[]) -{ - int res = RESULT_SUCCESS; - if (argc != 1) - return RESULT_SHOWUSAGE; - ast_mutex_lock(&alsalock); - if (!alsa.owner) { - ast_cli(fd, "No one is calling us\n"); - res = RESULT_FAILURE; - } else { - hookstate = 1; - cursound = -1; - grab_owner(); - if (alsa.owner) { - struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER }; - ast_queue_frame(alsa.owner, &f); - ast_mutex_unlock(&alsa.owner->lock); - } - answer_sound(); - } - snd_pcm_prepare(alsa.icard); - snd_pcm_start(alsa.icard); - ast_mutex_unlock(&alsalock); - return RESULT_SUCCESS; -} - -static char sendtext_usage[] = -"Usage: send text <message>\n" -" Sends a text message for display on the remote terminal.\n"; - -static int console_sendtext(int fd, int argc, char *argv[]) -{ - int tmparg = 2; - int res = RESULT_SUCCESS; - if (argc < 2) - return RESULT_SHOWUSAGE; - ast_mutex_lock(&alsalock); - if (!alsa.owner) { - ast_cli(fd, "No one is calling us\n"); - res = RESULT_FAILURE; - } else { - struct ast_frame f = { AST_FRAME_TEXT, 0 }; - char text2send[256] = ""; - text2send[0] = '\0'; - while(tmparg < argc) { - strncat(text2send, argv[tmparg++], sizeof(text2send) - strlen(text2send) - 1); - strncat(text2send, " ", sizeof(text2send) - strlen(text2send) - 1); - } - text2send[strlen(text2send) - 1] = '\n'; - f.data = text2send; - f.datalen = strlen(text2send) + 1; - grab_owner(); - if (alsa.owner) { - ast_queue_frame(alsa.owner, &f); - f.frametype = AST_FRAME_CONTROL; - f.subclass = AST_CONTROL_ANSWER; - f.data = NULL; - f.datalen = 0; - ast_queue_frame(alsa.owner, &f); - ast_mutex_unlock(&alsa.owner->lock); - } - } - ast_mutex_unlock(&alsalock); - return res; -} - -static char answer_usage[] = -"Usage: answer\n" -" Answers an incoming call on the console (ALSA) channel.\n"; - -static int console_hangup(int fd, int argc, char *argv[]) -{ - int res = RESULT_SUCCESS; - if (argc != 1) - return RESULT_SHOWUSAGE; - cursound = -1; - ast_mutex_lock(&alsalock); - if (!alsa.owner && !hookstate) { - ast_cli(fd, "No call to hangup up\n"); - res = RESULT_FAILURE; - } else { - hookstate = 0; - grab_owner(); - if (alsa.owner) { - ast_queue_hangup(alsa.owner); - ast_mutex_unlock(&alsa.owner->lock); - } - } - ast_mutex_unlock(&alsalock); - return res; -} - -static char hangup_usage[] = -"Usage: hangup\n" -" Hangs up any call currently placed on the console.\n"; - - -static int console_dial(int fd, int argc, char *argv[]) -{ - char tmp[256], *tmp2; - char *mye, *myc; - char *d; - int res = RESULT_SUCCESS; - if ((argc != 1) && (argc != 2)) - return RESULT_SHOWUSAGE; - ast_mutex_lock(&alsalock); - if (alsa.owner) { - if (argc == 2) { - d = argv[1]; - grab_owner(); - if (alsa.owner) { - struct ast_frame f = { AST_FRAME_DTMF }; - while(*d) { - f.subclass = *d; - ast_queue_frame(alsa.owner, &f); - d++; - } - ast_mutex_unlock(&alsa.owner->lock); - } - } else { - ast_cli(fd, "You're already in a call. You can use this only to dial digits until you hangup\n"); - res = RESULT_FAILURE; - } - } else { - mye = exten; - myc = context; - if (argc == 2) { - char *stringp=NULL; - strncpy(tmp, argv[1], sizeof(tmp)-1); - stringp=tmp; - strsep(&stringp, "@"); - tmp2 = strsep(&stringp, "@"); - if (!ast_strlen_zero(tmp)) - mye = tmp; - if (!ast_strlen_zero(tmp2)) - myc = tmp2; - } - if (ast_exists_extension(NULL, myc, mye, 1, NULL)) { - strncpy(alsa.exten, mye, sizeof(alsa.exten)-1); - strncpy(alsa.context, myc, sizeof(alsa.context)-1); - hookstate = 1; - alsa_new(&alsa, AST_STATE_RINGING); - } else - ast_cli(fd, "No such extension '%s' in context '%s'\n", mye, myc); - } - ast_mutex_unlock(&alsalock); - return res; -} - -static char dial_usage[] = -"Usage: dial [extension[@context]]\n" -" Dials a given extension (and context if specified)\n"; - - -static struct ast_cli_entry myclis[] = { - { { "answer", NULL }, console_answer, "Answer an incoming console call", answer_usage }, - { { "hangup", NULL }, console_hangup, "Hangup a call on the console", hangup_usage }, - { { "dial", NULL }, console_dial, "Dial an extension on the console", dial_usage }, - { { "send", "text", NULL }, console_sendtext, "Send text to the remote device", sendtext_usage }, - { { "autoanswer", NULL }, console_autoanswer, "Sets/displays autoanswer", autoanswer_usage, autoanswer_complete } -}; - -int load_module() -{ - int res; - int x; - struct ast_config *cfg; - struct ast_variable *v; - if ((cfg = ast_config_load(config))) { - v = ast_variable_browse(cfg, "general"); - while(v) { - if (!strcasecmp(v->name, "autoanswer")) - autoanswer = ast_true(v->value); - else if (!strcasecmp(v->name, "silencesuppression")) - silencesuppression = ast_true(v->value); - else if (!strcasecmp(v->name, "silencethreshold")) - silencethreshold = atoi(v->value); - else if (!strcasecmp(v->name, "context")) - strncpy(context, v->value, sizeof(context)-1); - else if (!strcasecmp(v->name, "language")) - strncpy(language, v->value, sizeof(language)-1); - else if (!strcasecmp(v->name, "extension")) - strncpy(exten, v->value, sizeof(exten)-1); - else if (!strcasecmp(v->name, "input_device")) - strncpy(indevname, v->value, sizeof(indevname)-1); - else if (!strcasecmp(v->name, "output_device")) - strncpy(outdevname, v->value, sizeof(outdevname)-1); - v=v->next; - } - ast_config_destroy(cfg); - } - res = pipe(sndcmd); - if (res) { - ast_log(LOG_ERROR, "Unable to create pipe\n"); - return -1; - } - res = soundcard_init(); - if (res < 0) { - if (option_verbose > 1) { - ast_verbose(VERBOSE_PREFIX_2 "No sound card detected -- console channel will be unavailable\n"); - ast_verbose(VERBOSE_PREFIX_2 "Turn off ALSA support by adding 'noload=chan_alsa.so' in /etc/asterisk/modules.conf\n"); - } - return 0; - } - - res = ast_channel_register(&alsa_tech); - if (res < 0) { - ast_log(LOG_ERROR, "Unable to register channel class '%s'\n", type); - return -1; - } - for (x=0;x<sizeof(myclis)/sizeof(struct ast_cli_entry); x++) - ast_cli_register(myclis + x); - ast_pthread_create(&sthread, NULL, sound_thread, NULL); -#ifdef ALSA_MONITOR - if (alsa_monitor_start()) { - ast_log(LOG_ERROR, "Problem starting Monitoring\n"); - } -#endif - return 0; -} - - - -int unload_module() -{ - int x; - - ast_channel_unregister(&alsa_tech); - for (x=0;x<sizeof(myclis)/sizeof(struct ast_cli_entry); x++) - ast_cli_unregister(myclis + x); - if (alsa.icard) - snd_pcm_close(alsa.icard); - if (alsa.ocard) - snd_pcm_close(alsa.ocard); - if (sndcmd[0] > 0) { - close(sndcmd[0]); - close(sndcmd[1]); - } - if (alsa.owner) - ast_softhangup(alsa.owner, AST_SOFTHANGUP_APPUNLOAD); - if (alsa.owner) - return -1; - return 0; -} - -char *description() -{ - return (char *) desc; -} - -int usecount() -{ - return usecnt; -} - -char *key() -{ - return ASTERISK_GPL_KEY; -} |