git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5490 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1111 lines
27 KiB
C
Executable file
1111 lines
27 KiB
C
Executable file
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Copyright (C) 2002 - 2005, Digium, Inc.
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*
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* By Matthew Fredrickson <creslin@digium.com>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include "asterisk/frame.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/module.h"
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#include "asterisk/options.h"
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#include "asterisk/pbx.h"
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#include "asterisk/config.h"
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#include "asterisk/cli.h"
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#include "asterisk/utils.h"
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#include "asterisk/causes.h"
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#include "asterisk/endian.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#define ALSA_PCM_NEW_SW_PARAMS_API
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#include <alsa/asoundlib.h>
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#include "busy.h"
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#include "ringtone.h"
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#include "ring10.h"
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#include "answer.h"
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#ifdef ALSA_MONITOR
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#include "alsa-monitor.h"
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#endif
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#define DEBUG 0
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/* Which device to use */
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#define ALSA_INDEV "default"
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#define ALSA_OUTDEV "default"
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#define DESIRED_RATE 8000
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/* Lets use 160 sample frames, just like GSM. */
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#define FRAME_SIZE 160
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#define PERIOD_FRAMES 80 /* 80 Frames, at 2 bytes each */
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/* When you set the frame size, you have to come up with
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the right buffer format as well. */
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/* 5 64-byte frames = one frame */
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#define BUFFER_FMT ((buffersize * 10) << 16) | (0x0006);
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/* Don't switch between read/write modes faster than every 300 ms */
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#define MIN_SWITCH_TIME 600
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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static snd_pcm_format_t format = SND_PCM_FORMAT_S16_LE;
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#else
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static snd_pcm_format_t format = SND_PCM_FORMAT_S16_BE;
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#endif
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/* static int block = O_NONBLOCK; */
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static char indevname[50] = ALSA_INDEV;
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static char outdevname[50] = ALSA_OUTDEV;
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#if 0
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static struct timeval lasttime;
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#endif
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static int usecnt;
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static int silencesuppression = 0;
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static int silencethreshold = 1000;
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AST_MUTEX_DEFINE_STATIC(usecnt_lock);
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AST_MUTEX_DEFINE_STATIC(alsalock);
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static const char type[] = "Console";
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static const char desc[] = "ALSA Console Channel Driver";
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static const char tdesc[] = "ALSA Console Channel Driver";
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static const char config[] = "alsa.conf";
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static char context[AST_MAX_EXTENSION] = "default";
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static char language[MAX_LANGUAGE] = "";
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static char exten[AST_MAX_EXTENSION] = "s";
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static int hookstate=0;
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static short silence[FRAME_SIZE] = {0, };
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struct sound {
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int ind;
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short *data;
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int datalen;
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int samplen;
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int silencelen;
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int repeat;
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};
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static struct sound sounds[] = {
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{ AST_CONTROL_RINGING, ringtone, sizeof(ringtone)/2, 16000, 32000, 1 },
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{ AST_CONTROL_BUSY, busy, sizeof(busy)/2, 4000, 4000, 1 },
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{ AST_CONTROL_CONGESTION, busy, sizeof(busy)/2, 2000, 2000, 1 },
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{ AST_CONTROL_RING, ring10, sizeof(ring10)/2, 16000, 32000, 1 },
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{ AST_CONTROL_ANSWER, answer, sizeof(answer)/2, 2200, 0, 0 },
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};
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/* Sound command pipe */
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static int sndcmd[2];
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static struct chan_alsa_pvt {
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/* We only have one ALSA structure -- near sighted perhaps, but it
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keeps this driver as simple as possible -- as it should be. */
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struct ast_channel *owner;
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char exten[AST_MAX_EXTENSION];
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char context[AST_MAX_EXTENSION];
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#if 0
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snd_pcm_t *card;
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#endif
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snd_pcm_t *icard, *ocard;
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} alsa;
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/* Number of buffers... Each is FRAMESIZE/8 ms long. For example
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with 160 sample frames, and a buffer size of 3, we have a 60ms buffer,
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usually plenty. */
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pthread_t sthread;
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#define MAX_BUFFER_SIZE 100
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/* File descriptors for sound device */
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static int readdev = -1;
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static int writedev = -1;
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static int autoanswer = 1;
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static int cursound = -1;
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static int sampsent = 0;
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static int silencelen=0;
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static int offset=0;
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static int nosound=0;
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/* ZZ */
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static struct ast_channel *alsa_request(const char *type, int format, void *data, int *cause);
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static int alsa_digit(struct ast_channel *c, char digit);
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static int alsa_text(struct ast_channel *c, const char *text);
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static int alsa_hangup(struct ast_channel *c);
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static int alsa_answer(struct ast_channel *c);
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static struct ast_frame *alsa_read(struct ast_channel *chan);
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static int alsa_call(struct ast_channel *c, char *dest, int timeout);
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static int alsa_write(struct ast_channel *chan, struct ast_frame *f);
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static int alsa_indicate(struct ast_channel *chan, int cond);
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static int alsa_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
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static const struct ast_channel_tech alsa_tech = {
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.type = type,
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.description = tdesc,
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.capabilities = AST_FORMAT_SLINEAR,
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.requester = alsa_request,
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.send_digit = alsa_digit,
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.send_text = alsa_text,
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.hangup = alsa_hangup,
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.answer = alsa_answer,
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.read = alsa_read,
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.call = alsa_call,
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.write = alsa_write,
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.indicate = alsa_indicate,
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.fixup = alsa_fixup,
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};
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static int send_sound(void)
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{
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short myframe[FRAME_SIZE];
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int total = FRAME_SIZE;
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short *frame = NULL;
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int amt=0;
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int res;
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int myoff;
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snd_pcm_state_t state;
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if (cursound > -1) {
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res = total;
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if (sampsent < sounds[cursound].samplen) {
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myoff=0;
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while(total) {
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amt = total;
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if (amt > (sounds[cursound].datalen - offset))
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amt = sounds[cursound].datalen - offset;
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memcpy(myframe + myoff, sounds[cursound].data + offset, amt * 2);
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total -= amt;
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offset += amt;
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sampsent += amt;
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myoff += amt;
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if (offset >= sounds[cursound].datalen)
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offset = 0;
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}
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/* Set it up for silence */
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if (sampsent >= sounds[cursound].samplen)
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silencelen = sounds[cursound].silencelen;
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frame = myframe;
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} else {
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if (silencelen > 0) {
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frame = silence;
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silencelen -= res;
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} else {
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if (sounds[cursound].repeat) {
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/* Start over */
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sampsent = 0;
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offset = 0;
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} else {
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cursound = -1;
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nosound = 0;
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}
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return 0;
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}
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}
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if (res == 0 || !frame) {
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return 0;
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}
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#ifdef ALSA_MONITOR
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alsa_monitor_write((char *)frame, res * 2);
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#endif
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state = snd_pcm_state(alsa.ocard);
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if (state == SND_PCM_STATE_XRUN) {
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snd_pcm_prepare(alsa.ocard);
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}
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res = snd_pcm_writei(alsa.ocard, frame, res);
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if (res > 0)
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return 0;
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return 0;
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}
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return 0;
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}
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static void *sound_thread(void *unused)
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{
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fd_set rfds;
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fd_set wfds;
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int max;
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int res;
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for(;;) {
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FD_ZERO(&rfds);
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FD_ZERO(&wfds);
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max = sndcmd[0];
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FD_SET(sndcmd[0], &rfds);
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if (cursound > -1) {
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FD_SET(writedev, &wfds);
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if (writedev > max)
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max = writedev;
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}
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#ifdef ALSA_MONITOR
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if (!alsa.owner) {
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FD_SET(readdev, &rfds);
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if (readdev > max)
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max = readdev;
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}
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#endif
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res = ast_select(max + 1, &rfds, &wfds, NULL, NULL);
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if (res < 1) {
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ast_log(LOG_WARNING, "select failed: %s\n", strerror(errno));
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continue;
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}
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#ifdef ALSA_MONITOR
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if (FD_ISSET(readdev, &rfds)) {
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/* Keep the pipe going with read audio */
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snd_pcm_state_t state;
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short buf[FRAME_SIZE];
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int r;
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state = snd_pcm_state(alsa.ocard);
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if (state == SND_PCM_STATE_XRUN) {
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snd_pcm_prepare(alsa.ocard);
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}
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r = snd_pcm_readi(alsa.icard, buf, FRAME_SIZE);
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if (r == -EPIPE) {
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#if DEBUG
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ast_log(LOG_ERROR, "XRUN read\n");
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#endif
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snd_pcm_prepare(alsa.icard);
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} else if (r == -ESTRPIPE) {
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ast_log(LOG_ERROR, "-ESTRPIPE\n");
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snd_pcm_prepare(alsa.icard);
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} else if (r < 0) {
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ast_log(LOG_ERROR, "Read error: %s\n", snd_strerror(r));
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} else
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alsa_monitor_read((char *)buf, r * 2);
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}
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#endif
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if (FD_ISSET(sndcmd[0], &rfds)) {
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read(sndcmd[0], &cursound, sizeof(cursound));
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silencelen = 0;
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offset = 0;
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sampsent = 0;
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}
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if (FD_ISSET(writedev, &wfds))
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if (send_sound())
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ast_log(LOG_WARNING, "Failed to write sound\n");
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}
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/* Never reached */
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return NULL;
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}
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static snd_pcm_t *alsa_card_init(char *dev, snd_pcm_stream_t stream)
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{
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int err;
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int direction;
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snd_pcm_t *handle = NULL;
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snd_pcm_hw_params_t *hwparams = NULL;
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snd_pcm_sw_params_t *swparams = NULL;
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struct pollfd pfd;
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snd_pcm_uframes_t period_size = PERIOD_FRAMES * 4;
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/* int period_bytes = 0; */
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snd_pcm_uframes_t buffer_size = 0;
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unsigned int rate = DESIRED_RATE;
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#if 0
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unsigned int per_min = 1;
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#endif
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/* unsigned int per_max = 8; */
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snd_pcm_uframes_t start_threshold, stop_threshold;
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err = snd_pcm_open(&handle, dev, stream, O_NONBLOCK);
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if (err < 0) {
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ast_log(LOG_ERROR, "snd_pcm_open failed: %s\n", snd_strerror(err));
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return NULL;
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} else {
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ast_log(LOG_DEBUG, "Opening device %s in %s mode\n", dev, (stream == SND_PCM_STREAM_CAPTURE) ? "read" : "write");
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}
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snd_pcm_hw_params_alloca(&hwparams);
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snd_pcm_hw_params_any(handle, hwparams);
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err = snd_pcm_hw_params_set_access(handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED);
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if (err < 0) {
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ast_log(LOG_ERROR, "set_access failed: %s\n", snd_strerror(err));
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}
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err = snd_pcm_hw_params_set_format(handle, hwparams, format);
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if (err < 0) {
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ast_log(LOG_ERROR, "set_format failed: %s\n", snd_strerror(err));
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}
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err = snd_pcm_hw_params_set_channels(handle, hwparams, 1);
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if (err < 0) {
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ast_log(LOG_ERROR, "set_channels failed: %s\n", snd_strerror(err));
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}
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direction = 0;
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err = snd_pcm_hw_params_set_rate_near(handle, hwparams, &rate, &direction);
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if (rate != DESIRED_RATE) {
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ast_log(LOG_WARNING, "Rate not correct, requested %d, got %d\n", DESIRED_RATE, rate);
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}
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direction = 0;
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err = snd_pcm_hw_params_set_period_size_near(handle, hwparams, &period_size, &direction);
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if (err < 0) {
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ast_log(LOG_ERROR, "period_size(%ld frames) is bad: %s\n", period_size, snd_strerror(err));
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} else {
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ast_log(LOG_DEBUG, "Period size is %d\n", err);
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}
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buffer_size = 4096 * 2; /* period_size * 16; */
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err = snd_pcm_hw_params_set_buffer_size_near(handle, hwparams, &buffer_size);
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if (err < 0) {
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ast_log(LOG_WARNING, "Problem setting buffer size of %ld: %s\n", buffer_size, snd_strerror(err));
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} else {
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ast_log(LOG_DEBUG, "Buffer size is set to %d frames\n", err);
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}
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#if 0
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direction = 0;
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err = snd_pcm_hw_params_set_periods_min(handle, hwparams, &per_min, &direction);
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if (err < 0) {
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ast_log(LOG_ERROR, "periods_min: %s\n", snd_strerror(err));
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}
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err = snd_pcm_hw_params_set_periods_max(handle, hwparams, &per_max, 0);
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if (err < 0) {
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ast_log(LOG_ERROR, "periods_max: %s\n", snd_strerror(err));
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}
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#endif
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err = snd_pcm_hw_params(handle, hwparams);
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if (err < 0) {
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ast_log(LOG_ERROR, "Couldn't set the new hw params: %s\n", snd_strerror(err));
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}
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snd_pcm_sw_params_alloca(&swparams);
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snd_pcm_sw_params_current(handle, swparams);
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#if 1
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if (stream == SND_PCM_STREAM_PLAYBACK) {
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start_threshold = period_size;
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} else {
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start_threshold = 1;
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}
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err = snd_pcm_sw_params_set_start_threshold(handle, swparams, start_threshold);
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if (err < 0) {
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ast_log(LOG_ERROR, "start threshold: %s\n", snd_strerror(err));
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}
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#endif
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#if 1
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if (stream == SND_PCM_STREAM_PLAYBACK) {
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stop_threshold = buffer_size;
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} else {
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stop_threshold = buffer_size;
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}
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err = snd_pcm_sw_params_set_stop_threshold(handle, swparams, stop_threshold);
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if (err < 0) {
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ast_log(LOG_ERROR, "stop threshold: %s\n", snd_strerror(err));
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}
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#endif
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#if 0
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err = snd_pcm_sw_params_set_xfer_align(handle, swparams, PERIOD_FRAMES);
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if (err < 0) {
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ast_log(LOG_ERROR, "Unable to set xfer alignment: %s\n", snd_strerror(err));
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}
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#endif
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#if 0
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err = snd_pcm_sw_params_set_silence_threshold(handle, swparams, silencethreshold);
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if (err < 0) {
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ast_log(LOG_ERROR, "Unable to set silence threshold: %s\n", snd_strerror(err));
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}
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#endif
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err = snd_pcm_sw_params(handle, swparams);
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if (err < 0) {
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ast_log(LOG_ERROR, "sw_params: %s\n", snd_strerror(err));
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}
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err = snd_pcm_poll_descriptors_count(handle);
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if (err <= 0) {
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ast_log(LOG_ERROR, "Unable to get a poll descriptors count, error is %s\n", snd_strerror(err));
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}
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if (err != 1) {
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ast_log(LOG_DEBUG, "Can't handle more than one device\n");
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}
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snd_pcm_poll_descriptors(handle, &pfd, err);
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ast_log(LOG_DEBUG, "Acquired fd %d from the poll descriptor\n", pfd.fd);
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if (stream == SND_PCM_STREAM_CAPTURE)
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readdev = pfd.fd;
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else
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writedev = pfd.fd;
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return handle;
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}
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static int soundcard_init(void)
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{
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alsa.icard = alsa_card_init(indevname, SND_PCM_STREAM_CAPTURE);
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alsa.ocard = alsa_card_init(outdevname, SND_PCM_STREAM_PLAYBACK);
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if (!alsa.icard || !alsa.ocard) {
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ast_log(LOG_ERROR, "Problem opening alsa I/O devices\n");
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return -1;
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}
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return readdev;
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}
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static int alsa_digit(struct ast_channel *c, char digit)
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{
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ast_mutex_lock(&alsalock);
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ast_verbose( " << Console Received digit %c >> \n", digit);
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ast_mutex_unlock(&alsalock);
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return 0;
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}
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static int alsa_text(struct ast_channel *c, const char *text)
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{
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ast_mutex_lock(&alsalock);
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ast_verbose( " << Console Received text %s >> \n", text);
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ast_mutex_unlock(&alsalock);
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return 0;
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}
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static void grab_owner(void)
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{
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while(alsa.owner && ast_mutex_trylock(&alsa.owner->lock)) {
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ast_mutex_unlock(&alsalock);
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usleep(1);
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ast_mutex_lock(&alsalock);
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}
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}
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|
|
|
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) {
|
|
res = 2;
|
|
write(sndcmd[1], &res, sizeof(res));
|
|
}
|
|
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;
|
|
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 (strlen(p->context))
|
|
strncpy(tmp->context, p->context, sizeof(tmp->context)-1);
|
|
if (strlen(p->exten))
|
|
strncpy(tmp->exten, p->exten, sizeof(tmp->exten)-1);
|
|
if (strlen(language))
|
|
strncpy(tmp->language, language, sizeof(tmp->language)-1);
|
|
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 (strlen(word) && !strncasecmp(word, "on", MIN(strlen(word), 2)))
|
|
return strdup("on");
|
|
case 1:
|
|
if (strlen(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);
|
|
}
|
|
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 (strlen(tmp))
|
|
mye = tmp;
|
|
if (tmp2 && strlen(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);
|
|
snd_pcm_close(alsa.icard);
|
|
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()
|
|
{
|
|
int res;
|
|
ast_mutex_lock(&usecnt_lock);
|
|
res = usecnt;
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
return res;
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|