[Asterisk-code-review] chan_alsa: Remove deprecated module. (asterisk[master])

George Joseph asteriskteam at digium.com
Fri Dec 9 09:27:58 CST 2022


George Joseph has submitted this change. ( https://gerrit.asterisk.org/c/asterisk/+/19564 )

Change subject: chan_alsa: Remove deprecated module.
......................................................................

chan_alsa: Remove deprecated module.

ASTERISK-30298

Change-Id: I5c8afb781528afdf55d237e3bffa5e4a862ae8c7
---
M agi/jukebox.agi
M build_tools/menuselect-deps.in
D channels/chan_alsa.c
M channels/chan_console.c
D configs/samples/alsa.conf.sample
M configs/samples/modules.conf.sample
M configure
M configure.ac
M contrib/scripts/install_prereq
A doc/UPGRADE-staging/chan_alsa_removal.txt
M include/asterisk/autoconfig.h.in
M include/asterisk/doxygen/licensing.h
M makeopts.in
M menuselect/example_menuselect-tree
M menuselect/test/menuselect-tree
M tests/CI/buildAsterisk.sh
16 files changed, 31 insertions(+), 1,291 deletions(-)

Approvals:
  George Joseph: Looks good to me, approved; Approved for Submit




diff --git a/agi/jukebox.agi b/agi/jukebox.agi
index 43d8978..3e83110 100755
--- a/agi/jukebox.agi
+++ b/agi/jukebox.agi
@@ -51,8 +51,7 @@
 #   going to http://www.mpg123.de/cgi-bin/sitexplorer.cgi?/mpg123/
 #   Be sure to download mpg123-0.59r.tar.gz because it is known to
 #   work with Asterisk and hopefully isn't the release with that
-#   awful security problem.  If you're using Fedora Core 3 with
-#   Alsa like me, make linux-alsa isn't going to work.  Do make
+#   awful security problem.  If you're using Fedora Core 3 do make
 #   linux-devel and you're peachy keen.
 #
 # - You won't get nifty STDERR debug messages if you're using a
diff --git a/build_tools/menuselect-deps.in b/build_tools/menuselect-deps.in
index 9a07214..f616f64 100644
--- a/build_tools/menuselect-deps.in
+++ b/build_tools/menuselect-deps.in
@@ -1,4 +1,3 @@
-ALSA=@PBX_ALSA@
 BLUETOOTH=@PBX_BLUETOOTH@
 BEANSTALK=@PBX_BEANSTALK@
 COROSYNC=@PBX_COROSYNC@
diff --git a/channels/chan_alsa.c b/channels/chan_alsa.c
deleted file mode 100644
index 35bb34b..0000000
--- a/channels/chan_alsa.c
+++ /dev/null
@@ -1,1047 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2005, Digium, Inc.
- *
- * By Matthew Fredrickson <creslin at 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
- *
- * \author Matthew Fredrickson <creslin at digium.com>
- *
- * \ingroup channel_drivers
- */
-
-/*! \li \ref chan_alsa.c uses the configuration file \ref alsa.conf
- * \addtogroup configuration_file
- */
-
-/*! \page alsa.conf alsa.conf
- * \verbinclude alsa.conf.sample
- */
-
-/*** MODULEINFO
-	<depend>alsa</depend>
-	<defaultenabled>no</defaultenabled>
-	<support_level>deprecated</support_level>
-	<replacement>chan_console</replacement>
-	<deprecated_in>19</deprecated_in>
-	<removed_in>21</removed_in>
- ***/
-
-#include "asterisk.h"
-
-#include <errno.h>
-#ifndef ESTRPIPE
-#define ESTRPIPE EPIPE
-#endif
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-
-#define ALSA_PCM_NEW_HW_PARAMS_API
-#define ALSA_PCM_NEW_SW_PARAMS_API
-#include <alsa/asoundlib.h>
-
-#include "asterisk/frame.h"
-#include "asterisk/channel.h"
-#include "asterisk/module.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 "asterisk/stringfields.h"
-#include "asterisk/abstract_jb.h"
-#include "asterisk/musiconhold.h"
-#include "asterisk/poll-compat.h"
-#include "asterisk/stasis_channels.h"
-#include "asterisk/format_cache.h"
-
-/*! Global jitterbuffer configuration - by default, jb is disabled
- *  \note Values shown here match the defaults shown in alsa.conf.sample */
-static struct ast_jb_conf default_jbconf = {
-	.flags = 0,
-	.max_size = 200,
-	.resync_threshold = 1000,
-	.impl = "fixed",
-	.target_extra = 40,
-};
-static struct ast_jb_conf global_jbconf;
-
-#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 char indevname[50] = ALSA_INDEV;
-static char outdevname[50] = ALSA_OUTDEV;
-
-static int silencesuppression = 0;
-static int silencethreshold = 1000;
-
-AST_MUTEX_DEFINE_STATIC(alsalock);
-
-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 char mohinterpret[MAX_MUSICCLASS];
-
-static int hookstate = 0;
-
-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];
-	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. */
-
-#define MAX_BUFFER_SIZE 100
-
-/* File descriptors for sound device */
-static int readdev = -1;
-static int writedev = -1;
-
-static int autoanswer = 1;
-static int mute = 0;
-static int noaudiocapture = 0;
-
-static struct ast_channel *alsa_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause);
-static int alsa_digit(struct ast_channel *c, char digit, unsigned int duration);
-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, const 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, const void *data, size_t datalen);
-static int alsa_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
-
-static struct ast_channel_tech alsa_tech = {
-	.type = "Console",
-	.description = tdesc,
-	.requester = alsa_request,
-	.send_digit_end = 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 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;
-	snd_pcm_uframes_t buffer_size = 0;
-	unsigned int rate = DESIRED_RATE;
-	snd_pcm_uframes_t start_threshold, stop_threshold;
-
-	err = snd_pcm_open(&handle, dev, stream, SND_PCM_NONBLOCK);
-	if (err < 0) {
-		ast_log(LOG_ERROR, "snd_pcm_open failed: %s\n", snd_strerror(err));
-		return NULL;
-	} else {
-		ast_debug(1, "Opening device %s in %s mode\n", dev, (stream == SND_PCM_STREAM_CAPTURE) ? "read" : "write");
-	}
-
-	hwparams = ast_alloca(snd_pcm_hw_params_sizeof());
-	memset(hwparams, 0, snd_pcm_hw_params_sizeof());
-	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 %u\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(%lu frames) is bad: %s\n", period_size, snd_strerror(err));
-	else {
-		ast_debug(1, "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 %lu: %s\n", buffer_size, snd_strerror(err));
-	else {
-		ast_debug(1, "Buffer size is set to %d frames\n", err);
-	}
-
-	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));
-
-	swparams = ast_alloca(snd_pcm_sw_params_sizeof());
-	memset(swparams, 0, snd_pcm_sw_params_sizeof());
-	snd_pcm_sw_params_current(handle, swparams);
-
-	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));
-
-	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));
-
-	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_debug(1, "Can't handle more than one device\n");
-	}
-
-	snd_pcm_poll_descriptors(handle, &pfd, err);
-	ast_debug(1, "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)
-{
-	if (!noaudiocapture) {
-		alsa.icard = alsa_card_init(indevname, SND_PCM_STREAM_CAPTURE);
-		if (!alsa.icard) {
-			ast_log(LOG_ERROR, "Problem opening alsa capture device\n");
-			return -1;
-		}
-	}
-
-	alsa.ocard = alsa_card_init(outdevname, SND_PCM_STREAM_PLAYBACK);
-
-	if (!alsa.ocard) {
-		ast_log(LOG_ERROR, "Problem opening ALSA playback device\n");
-		return -1;
-	}
-
-	return writedev;
-}
-
-static int alsa_digit(struct ast_channel *c, char digit, unsigned int duration)
-{
-	ast_mutex_lock(&alsalock);
-	ast_verbose(" << Console Received digit %c of duration %u ms >> \n",
-		digit, duration);
-	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_channel_trylock(alsa.owner)) {
-		DEADLOCK_AVOIDANCE(&alsalock);
-	}
-}
-
-static int alsa_call(struct ast_channel *c, const char *dest, int timeout)
-{
-	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");
-		if (mute) {
-			ast_verbose( " << Muted >> \n" );
-		}
-		grab_owner();
-		if (alsa.owner) {
-			f.subclass.integer = AST_CONTROL_ANSWER;
-			ast_queue_frame(alsa.owner, &f);
-			ast_channel_unlock(alsa.owner);
-		}
-	} else {
-		ast_verbose(" << Type 'answer' to answer, or use 'autoanswer' for future calls >> \n");
-		grab_owner();
-		if (alsa.owner) {
-			f.subclass.integer = AST_CONTROL_RINGING;
-			ast_queue_frame(alsa.owner, &f);
-			ast_channel_unlock(alsa.owner);
-			ast_indicate(alsa.owner, AST_CONTROL_RINGING);
-		}
-	}
-	if (!noaudiocapture) {
-		snd_pcm_prepare(alsa.icard);
-		snd_pcm_start(alsa.icard);
-	}
-	ast_mutex_unlock(&alsalock);
-
-	return 0;
-}
-
-static int alsa_answer(struct ast_channel *c)
-{
-	ast_mutex_lock(&alsalock);
-	ast_verbose(" << Console call has been answered >> \n");
-	ast_setstate(c, AST_STATE_UP);
-	if (!noaudiocapture) {
-		snd_pcm_prepare(alsa.icard);
-		snd_pcm_start(alsa.icard);
-	}
-	ast_mutex_unlock(&alsalock);
-
-	return 0;
-}
-
-static int alsa_hangup(struct ast_channel *c)
-{
-	ast_mutex_lock(&alsalock);
-	ast_channel_tech_pvt_set(c, NULL);
-	alsa.owner = NULL;
-	ast_verbose(" << Hangup on console >> \n");
-	ast_module_unref(ast_module_info->self);
-	hookstate = 0;
-	if (!noaudiocapture) {
-		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 res = 0;
-	/* size_t frames = 0; */
-	snd_pcm_state_t state;
-
-	ast_mutex_lock(&alsalock);
-
-	/* 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.ptr, f->datalen);
-		len += f->datalen;
-		state = snd_pcm_state(alsa.ocard);
-		if (state == SND_PCM_STATE_XRUN)
-			snd_pcm_prepare(alsa.ocard);
-		while ((res = snd_pcm_writei(alsa.ocard, sizbuf, len / 2)) == -EAGAIN) {
-			usleep(1);
-		}
-		if (res == -EPIPE) {
-#if DEBUG
-			ast_debug(1, "XRUN write\n");
-#endif
-			snd_pcm_prepare(alsa.ocard);
-			while ((res = snd_pcm_writei(alsa.ocard, sizbuf, len / 2)) == -EAGAIN) {
-				usleep(1);
-			}
-			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);
-
-	return res >= 0 ? 0 : 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;
-
-	ast_mutex_lock(&alsalock);
-	f.frametype = AST_FRAME_NULL;
-	f.subclass.integer = 0;
-	f.samples = 0;
-	f.datalen = 0;
-	f.data.ptr = NULL;
-	f.offset = 0;
-	f.src = "Console";
-	f.mallocd = 0;
-	f.delivery.tv_sec = 0;
-	f.delivery.tv_usec = 0;
-
-	if (noaudiocapture) {
-		/* Return null frame to asterisk*/
-		ast_mutex_unlock(&alsalock);
-		return &f;
-	}
-
-	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));
-	}
-
-	/* Return NULL frame on error */
-	if (r < 0) {
-		ast_mutex_unlock(&alsalock);
-		return &f;
-	}
-
-	/* Update positions */
-	readpos += r;
-	left -= r;
-
-	if (readpos >= FRAME_SIZE) {
-		/* A real frame */
-		readpos = 0;
-		left = FRAME_SIZE;
-		if (ast_channel_state(chan) != AST_STATE_UP) {
-			/* Don't transmit unless it's up */
-			ast_mutex_unlock(&alsalock);
-			return &f;
-		}
-		if (mute) {
-			/* Don't transmit if muted */
-			ast_mutex_unlock(&alsalock);
-			return &f;
-		}
-
-		f.frametype = AST_FRAME_VOICE;
-		f.subclass.format = ast_format_slin;
-		f.samples = FRAME_SIZE;
-		f.datalen = FRAME_SIZE * 2;
-		f.data.ptr = buf;
-		f.offset = AST_FRIENDLY_OFFSET;
-		f.src = "Console";
-		f.mallocd = 0;
-
-	}
-	ast_mutex_unlock(&alsalock);
-
-	return &f;
-}
-
-static int alsa_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
-{
-	struct chan_alsa_pvt *p = ast_channel_tech_pvt(newchan);
-
-	ast_mutex_lock(&alsalock);
-	p->owner = newchan;
-	ast_mutex_unlock(&alsalock);
-
-	return 0;
-}
-
-static int alsa_indicate(struct ast_channel *chan, int cond, const void *data, size_t datalen)
-{
-	int res = 0;
-
-	ast_mutex_lock(&alsalock);
-
-	switch (cond) {
-	case AST_CONTROL_BUSY:
-	case AST_CONTROL_CONGESTION:
-	case AST_CONTROL_RINGING:
-	case AST_CONTROL_INCOMPLETE:
-	case AST_CONTROL_PVT_CAUSE_CODE:
-	case -1:
-		res = -1;  /* Ask for inband indications */
-		break;
-	case AST_CONTROL_PROGRESS:
-	case AST_CONTROL_PROCEEDING:
-	case AST_CONTROL_VIDUPDATE:
-	case AST_CONTROL_SRCUPDATE:
-		break;
-	case AST_CONTROL_HOLD:
-		ast_verbose(" << Console Has Been Placed on Hold >> \n");
-		ast_moh_start(chan, data, mohinterpret);
-		break;
-	case AST_CONTROL_UNHOLD:
-		ast_verbose(" << Console Has Been Retrieved from Hold >> \n");
-		ast_moh_stop(chan);
-		break;
-	default:
-		ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", cond, ast_channel_name(chan));
-		res = -1;
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static struct ast_channel *alsa_new(struct chan_alsa_pvt *p, int state, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor)
-{
-	struct ast_channel *tmp = NULL;
-
-	if (!(tmp = ast_channel_alloc(1, state, 0, 0, "", p->exten, p->context, assignedids, requestor, 0, "ALSA/%s", indevname)))
-		return NULL;
-
-	ast_channel_stage_snapshot(tmp);
-
-	ast_channel_tech_set(tmp, &alsa_tech);
-	ast_channel_set_fd(tmp, 0, readdev);
-	ast_channel_set_readformat(tmp, ast_format_slin);
-	ast_channel_set_writeformat(tmp, ast_format_slin);
-	ast_channel_nativeformats_set(tmp, alsa_tech.capabilities);
-
-	ast_channel_tech_pvt_set(tmp, p);
-	if (!ast_strlen_zero(p->context))
-		ast_channel_context_set(tmp, p->context);
-	if (!ast_strlen_zero(p->exten))
-		ast_channel_exten_set(tmp, p->exten);
-	if (!ast_strlen_zero(language))
-		ast_channel_language_set(tmp, language);
-	p->owner = tmp;
-	ast_module_ref(ast_module_info->self);
-	ast_jb_configure(tmp, &global_jbconf);
-
-	ast_channel_stage_snapshot_done(tmp);
-	ast_channel_unlock(tmp);
-
-	if (state != AST_STATE_DOWN) {
-		if (ast_pbx_start(tmp)) {
-			ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ast_channel_name(tmp));
-			ast_hangup(tmp);
-			tmp = NULL;
-		}
-	}
-
-	return tmp;
-}
-
-static struct ast_channel *alsa_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause)
-{
-	struct ast_channel *tmp = NULL;
-
-	if (ast_format_cap_iscompatible_format(cap, ast_format_slin) == AST_FORMAT_CMP_NOT_EQUAL) {
-		struct ast_str *codec_buf = ast_str_alloca(AST_FORMAT_CAP_NAMES_LEN);
-		ast_log(LOG_NOTICE, "Asked to get a channel of format '%s'\n", ast_format_cap_get_names(cap, &codec_buf));
-		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 if (!(tmp = alsa_new(&alsa, AST_STATE_DOWN, assignedids, requestor))) {
-		ast_log(LOG_WARNING, "Unable to create new ALSA channel\n");
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return tmp;
-}
-
-static char *console_autoanswer(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console autoanswer [on|off]";
-		e->usage =
-			"Usage: console 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";
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-	if ((a->argc != 2) && (a->argc != 3))
-		return CLI_SHOWUSAGE;
-
-	ast_mutex_lock(&alsalock);
-	if (a->argc == 2) {
-		ast_cli(a->fd, "Auto answer is %s.\n", autoanswer ? "on" : "off");
-	} else {
-		if (!strcasecmp(a->argv[2], "on"))
-			autoanswer = -1;
-		else if (!strcasecmp(a->argv[2], "off"))
-			autoanswer = 0;
-		else
-			res = CLI_SHOWUSAGE;
-	}
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static char *console_answer(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console answer";
-		e->usage =
-			"Usage: console answer\n"
-			"       Answers an incoming call on the console (ALSA) channel.\n";
-
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-	if (a->argc != 2)
-		return CLI_SHOWUSAGE;
-
-	ast_mutex_lock(&alsalock);
-
-	if (!alsa.owner) {
-		ast_cli(a->fd, "No one is calling us\n");
-		res = CLI_FAILURE;
-	} else {
-		if (mute) {
-			ast_verbose( " << Muted >> \n" );
-		}
-		hookstate = 1;
-		grab_owner();
-		if (alsa.owner) {
-			ast_queue_control(alsa.owner, AST_CONTROL_ANSWER);
-			ast_channel_unlock(alsa.owner);
-		}
-	}
-
-	if (!noaudiocapture) {
-		snd_pcm_prepare(alsa.icard);
-		snd_pcm_start(alsa.icard);
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static char *console_sendtext(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	int tmparg = 3;
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console send text";
-		e->usage =
-			"Usage: console send text <message>\n"
-			"       Sends a text message for display on the remote terminal.\n";
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-	if (a->argc < 3)
-		return CLI_SHOWUSAGE;
-
-	ast_mutex_lock(&alsalock);
-
-	if (!alsa.owner) {
-		ast_cli(a->fd, "No channel active\n");
-		res = CLI_FAILURE;
-	} else {
-		struct ast_frame f = { AST_FRAME_TEXT };
-		char text2send[256] = "";
-
-		while (tmparg < a->argc) {
-			strncat(text2send, a->argv[tmparg++], sizeof(text2send) - strlen(text2send) - 1);
-			strncat(text2send, " ", sizeof(text2send) - strlen(text2send) - 1);
-		}
-
-		text2send[strlen(text2send) - 1] = '\n';
-		f.data.ptr = text2send;
-		f.datalen = strlen(text2send) + 1;
-		grab_owner();
-		if (alsa.owner) {
-			ast_queue_frame(alsa.owner, &f);
-			ast_queue_control(alsa.owner, AST_CONTROL_ANSWER);
-			ast_channel_unlock(alsa.owner);
-		}
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static char *console_hangup(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console hangup";
-		e->usage =
-			"Usage: console hangup\n"
-			"       Hangs up any call currently placed on the console.\n";
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-
-	if (a->argc != 2)
-		return CLI_SHOWUSAGE;
-
-	ast_mutex_lock(&alsalock);
-
-	if (!alsa.owner && !hookstate) {
-		ast_cli(a->fd, "No call to hangup\n");
-		res = CLI_FAILURE;
-	} else {
-		hookstate = 0;
-		grab_owner();
-		if (alsa.owner) {
-			ast_queue_hangup_with_cause(alsa.owner, AST_CAUSE_NORMAL_CLEARING);
-			ast_channel_unlock(alsa.owner);
-		}
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static char *console_dial(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	char tmp[256], *tmp2;
-	char *mye, *myc;
-	const char *d;
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console dial";
-		e->usage =
-			"Usage: console dial [extension[@context]]\n"
-			"       Dials a given extension (and context if specified)\n";
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-	if ((a->argc != 2) && (a->argc != 3))
-		return CLI_SHOWUSAGE;
-
-	ast_mutex_lock(&alsalock);
-
-	if (alsa.owner) {
-		if (a->argc == 3) {
-			if (alsa.owner) {
-				for (d = a->argv[2]; *d; d++) {
-					struct ast_frame f = { .frametype = AST_FRAME_DTMF, .subclass.integer = *d };
-
-					ast_queue_frame(alsa.owner, &f);
-				}
-			}
-		} else {
-			ast_cli(a->fd, "You're already in a call.  You can use this only to dial digits until you hangup\n");
-			res = CLI_FAILURE;
-		}
-	} else {
-		mye = exten;
-		myc = context;
-		if (a->argc == 3) {
-			char *stringp = NULL;
-
-			ast_copy_string(tmp, a->argv[2], sizeof(tmp));
-			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)) {
-			ast_copy_string(alsa.exten, mye, sizeof(alsa.exten));
-			ast_copy_string(alsa.context, myc, sizeof(alsa.context));
-			hookstate = 1;
-			alsa_new(&alsa, AST_STATE_RINGING, NULL, NULL);
-		} else
-			ast_cli(a->fd, "No such extension '%s' in context '%s'\n", mye, myc);
-	}
-
-	ast_mutex_unlock(&alsalock);
-
-	return res;
-}
-
-static char *console_mute(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
-	int toggle = 0;
-	char *res = CLI_SUCCESS;
-
-	switch (cmd) {
-	case CLI_INIT:
-		e->command = "console {mute|unmute} [toggle]";
-		e->usage =
-			"Usage: console {mute|unmute} [toggle]\n"
-			"       Mute/unmute the microphone.\n";
-		return NULL;
-	case CLI_GENERATE:
-		return NULL;
-	}
-
-
-	if (a->argc > 3) {
-		return CLI_SHOWUSAGE;
-	}
-
-	if (a->argc == 3) {
-		if (strcasecmp(a->argv[2], "toggle"))
-			return CLI_SHOWUSAGE;
-		toggle = 1;
-	}
-
-	if (a->argc < 2) {
-		return CLI_SHOWUSAGE;
-	}
-
-	if (!strcasecmp(a->argv[1], "mute")) {
-		mute = toggle ? !mute : 1;
-	} else if (!strcasecmp(a->argv[1], "unmute")) {
-		mute = toggle ? !mute : 0;
-	} else {
-		return CLI_SHOWUSAGE;
-	}
-
-	ast_cli(a->fd, "Console mic is %s\n", mute ? "off" : "on");
-
-	return res;
-}
-
-static struct ast_cli_entry cli_alsa[] = {
-	AST_CLI_DEFINE(console_answer, "Answer an incoming console call"),
-	AST_CLI_DEFINE(console_hangup, "Hangup a call on the console"),
-	AST_CLI_DEFINE(console_dial, "Dial an extension on the console"),
-	AST_CLI_DEFINE(console_sendtext, "Send text to the remote device"),
-	AST_CLI_DEFINE(console_autoanswer, "Sets/displays autoanswer"),
-	AST_CLI_DEFINE(console_mute, "Disable/Enable mic input"),
-};
-
-static int unload_module(void)
-{
-	ast_channel_unregister(&alsa_tech);
-	ast_cli_unregister_multiple(cli_alsa, ARRAY_LEN(cli_alsa));
-
-	if (alsa.icard)
-		snd_pcm_close(alsa.icard);
-	if (alsa.ocard)
-		snd_pcm_close(alsa.ocard);
-	if (alsa.owner)
-		ast_softhangup(alsa.owner, AST_SOFTHANGUP_APPUNLOAD);
-	if (alsa.owner)
-		return -1;
-
-	ao2_cleanup(alsa_tech.capabilities);
-	alsa_tech.capabilities = NULL;
-
-	return 0;
-}
-
-/*!
- * \brief Load the module
- *
- * Module loading including tests for configuration or dependencies.
- * This function can return AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_DECLINE,
- * or AST_MODULE_LOAD_SUCCESS. If a dependency or environment variable fails
- * tests return AST_MODULE_LOAD_FAILURE. If the module can not load the
- * configuration file or other non-critical problem return
- * AST_MODULE_LOAD_DECLINE. On success return AST_MODULE_LOAD_SUCCESS.
- */
-static int load_module(void)
-{
-	struct ast_config *cfg;
-	struct ast_variable *v;
-	struct ast_flags config_flags = { 0 };
-
-	if (!(alsa_tech.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
-		return AST_MODULE_LOAD_DECLINE;
-	}
-	ast_format_cap_append(alsa_tech.capabilities, ast_format_slin, 0);
-
-	/* Copy the default jb config over global_jbconf */
-	memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
-
-	strcpy(mohinterpret, "default");
-
-	if (!(cfg = ast_config_load(config, config_flags))) {
-		ast_log(LOG_ERROR, "Unable to read ALSA configuration file %s.  Aborting.\n", config);
-		return AST_MODULE_LOAD_DECLINE;
-	} else if (cfg == CONFIG_STATUS_FILEINVALID) {
-		ast_log(LOG_ERROR, "%s is in an invalid format.  Aborting.\n", config);
-		return AST_MODULE_LOAD_DECLINE;
-	}
-
-	v = ast_variable_browse(cfg, "general");
-	for (; v; v = v->next) {
-		/* handle jb conf */
-		if (!ast_jb_read_conf(&global_jbconf, v->name, v->value)) {
-			continue;
-		}
-
-		if (!strcasecmp(v->name, "autoanswer")) {
-			autoanswer = ast_true(v->value);
-		} else if (!strcasecmp(v->name, "mute")) {
-			mute = ast_true(v->value);
-		} else if (!strcasecmp(v->name, "noaudiocapture")) {
-			noaudiocapture = 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")) {
-			ast_copy_string(context, v->value, sizeof(context));
-		} else if (!strcasecmp(v->name, "language")) {
-			ast_copy_string(language, v->value, sizeof(language));
-		} else if (!strcasecmp(v->name, "extension")) {
-			ast_copy_string(exten, v->value, sizeof(exten));
-		} else if (!strcasecmp(v->name, "input_device")) {
-			ast_copy_string(indevname, v->value, sizeof(indevname));
-		} else if (!strcasecmp(v->name, "output_device")) {
-			ast_copy_string(outdevname, v->value, sizeof(outdevname));
-		} else if (!strcasecmp(v->name, "mohinterpret")) {
-			ast_copy_string(mohinterpret, v->value, sizeof(mohinterpret));
-		}
-	}
-	ast_config_destroy(cfg);
-
-	if (soundcard_init() < 0) {
-		ast_verb(2, "No sound card detected -- console channel will be unavailable\n");
-		ast_verb(2, "Turn off ALSA support by adding 'noload=chan_alsa.so' in /etc/asterisk/modules.conf\n");
-		unload_module();
-
-		return AST_MODULE_LOAD_DECLINE;
-	}
-
-	if (ast_channel_register(&alsa_tech)) {
-		ast_log(LOG_ERROR, "Unable to register channel class 'Console'\n");
-		unload_module();
-
-		return AST_MODULE_LOAD_DECLINE;
-	}
-
-	ast_cli_register_multiple(cli_alsa, ARRAY_LEN(cli_alsa));
-
-	return AST_MODULE_LOAD_SUCCESS;
-}
-
-AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "ALSA Console Channel Driver",
-	.support_level = AST_MODULE_SUPPORT_DEPRECATED,
-	.load = load_module,
-	.unload = unload_module,
-	.load_pri = AST_MODPRI_CHANNEL_DRIVER,
-);
diff --git a/channels/chan_console.c b/channels/chan_console.c
index 1d1d94c..5189212 100644
--- a/channels/chan_console.c
+++ b/channels/chan_console.c
@@ -35,11 +35,9 @@
  *  - svn co https://www.portaudio.com/repos/portaudio/branches/v19-devel
  *
  * \note Since this works with any audio system that libportaudio supports,
- * including ALSA and OSS, this may someday deprecate chan_alsa and chan_oss.
- * However, before that can be done, it needs to *at least* have all of the
- * features that these other channel drivers have.  The features implemented
- * in at least one of the other console channel drivers that are not yet
- * implemented here are:
+ * including ALSA and OSS, it has come to replace the deprecated chan_alsa and
+ * chan_oss. However, the following features *at least* need to be implemented
+ * here for this to be a full replacement:
  *
  * - Set Auto-answer from the dialplan
  * - transfer CLI command
diff --git a/configs/samples/alsa.conf.sample b/configs/samples/alsa.conf.sample
deleted file mode 100644
index 3e61710..0000000
--- a/configs/samples/alsa.conf.sample
+++ /dev/null
@@ -1,77 +0,0 @@
-;
-; Open Sound System Console Driver Configuration File
-;
-[general]
-;
-; Automatically answer incoming calls on the console?  Choose yes if
-; for example you want to use this as an intercom.
-;
-autoanswer=yes
-;
-; Default context (is overridden with @context syntax)
-;
-context=local
-;
-; Default extension to call
-;
-extension=s
-;
-; Default language
-;
-;language=en
-;
-; Default Music on Hold class to use when this channel is placed on hold in
-; the case that the music class is not set on the channel with
-; Set(CHANNEL(musicclass)=whatever) in the dialplan and the peer channel
-; putting this one on hold did not suggest a class to use.
-;
-;mohinterpret=default
-;
-; Silence suppression can be enabled when sound is over a certain threshold.
-; The value for the threshold should probably be between 500 and 2000 or so,
-; but your mileage may vary.  Use the echo test to evaluate the best setting.
-;silencesuppression = yes
-;silencethreshold = 1000
-;
-; To set which ALSA device to use, change this parameter
-;input_device=hw:0,0
-;output_device=hw:0,0
-
-;
-; Default mute state (can also be toggled via CLI)
-;mute=true
-
-;
-; If enabled, no audio capture device will be opened.  This is useful on
-; systems where there will be no return audio path, such as overhead pagers.
-;noaudiocapture=true
-
-; ----------------------------- JITTER BUFFER CONFIGURATION --------------------------
-; jbenable = yes              ; Enables the use of a jitterbuffer on the receiving side of an
-                              ; ALSA channel. Defaults to "no". An enabled jitterbuffer will
-                              ; be used only if the sending side can create and the receiving
-                              ; side can not accept jitter. The ALSA channel can't accept jitter,
-                              ; thus an enabled jitterbuffer on the receive ALSA side will always
-                              ; be used if the sending side can create jitter.
-
-; jbmaxsize = 200             ; Max length of the jitterbuffer in milliseconds.
-
-; jbresyncthreshold = 1000    ; Jump in the frame timestamps over which the jitterbuffer is
-                              ; resynchronized. Useful to improve the quality of the voice, with
-                              ; big jumps in/broken timestamps, usually sent from exotic devices
-                              ; and programs. Defaults to 1000.
-
-; jbimpl = fixed              ; Jitterbuffer implementation, used on the receiving side of a SIP
-                              ; channel. Two implementations are currently available - "fixed"
-                              ; (with size always equals to jbmax-size) and "adaptive" (with
-                              ; variable size, actually the new jb of IAX2). Defaults to fixed.
-
-; jbtargetextra = 40          ; This option only affects the jb when 'jbimpl = adaptive' is set.
-                              ; The option represents the number of milliseconds by which the new
-                              ; jitter buffer will pad its size. the default is 40, so without
-                              ; modification, the new jitter buffer will set its size to the jitter
-                              ; value plus 40 milliseconds. increasing this value may help if your
-                              ; network normally has low jitter, but occasionally has spikes.
-
-; jblog = no                  ; Enables jitterbuffer frame logging. Defaults to "no".
-; ----------------------------------------------------------------------------------
diff --git a/configs/samples/modules.conf.sample b/configs/samples/modules.conf.sample
index 2ab16d1..41cf905 100644
--- a/configs/samples/modules.conf.sample
+++ b/configs/samples/modules.conf.sample
@@ -31,10 +31,9 @@
 ;
 ;load = res_musiconhold.so
 ;
-; Load one of: alsa, or console (portaudio).
+; Load one of: console (portaudio).
 ; By default, load chan_console only (automatically).
 ;
-noload = chan_alsa.so
 ;noload = chan_console.so
 ;
 ; Do not load res_hep and kin unless you are using HEP monitoring
diff --git a/configure b/configure
index 38bfc20..09abe0c 100755
--- a/configure
+++ b/configure
@@ -1179,10 +1179,6 @@
 BFD_DIR
 BFD_INCLUDE
 BFD_LIB
-PBX_ALSA
-ALSA_DIR
-ALSA_INCLUDE
-ALSA_LIB
 PJPROJECT_INCLUDE
 PJPROJECT_LIB
 PBX_PJPROJECT
@@ -11116,32 +11112,6 @@
 # to make things easier for the users.
 
 
-    ALSA_DESCRIP="Advanced Linux Sound Architecture"
-    ALSA_OPTION="asound"
-    PBX_ALSA=0
-
-# Check whether --with-asound was given.
-if test ${with_asound+y}
-then :
-  withval=$with_asound;
-	case ${withval} in
-	n|no)
-	USE_ALSA=no
-	# -1 is a magic value used by menuselect to know that the package
-	# was disabled, other than 'not found'
-	PBX_ALSA=-1
-	;;
-	y|ye|yes)
-	ac_mandatory_list="${ac_mandatory_list} ALSA"
-	;;
-	*)
-	ALSA_DIR="${withval}"
-	ac_mandatory_list="${ac_mandatory_list} ALSA"
-	;;
-	esac
-
-fi
-
 
 
 
@@ -21874,102 +21844,6 @@
 # do the package library checks now
 
 
-if test "x${PBX_ALSA}" != "x1" -a "${USE_ALSA}" != "no"; then
-   pbxlibdir=""
-   # if --with-ALSA=DIR has been specified, use it.
-   if test "x${ALSA_DIR}" != "x"; then
-      if test -d ${ALSA_DIR}/lib; then
-         pbxlibdir="-L${ALSA_DIR}/lib"
-      else
-         pbxlibdir="-L${ALSA_DIR}"
-      fi
-   fi
-
-      ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
-      CFLAGS="${CFLAGS} "
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for snd_pcm_open in -lasound" >&5
-printf %s "checking for snd_pcm_open in -lasound... " >&6; }
-if test ${ac_cv_lib_asound_snd_pcm_open+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lasound ${pbxlibdir}  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char snd_pcm_open ();
-int
-main (void)
-{
-return snd_pcm_open ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_asound_snd_pcm_open=yes
-else $as_nop
-  ac_cv_lib_asound_snd_pcm_open=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_asound_snd_pcm_open" >&5
-printf "%s\n" "$ac_cv_lib_asound_snd_pcm_open" >&6; }
-if test "x$ac_cv_lib_asound_snd_pcm_open" = xyes
-then :
-  AST_ALSA_FOUND=yes
-else $as_nop
-  AST_ALSA_FOUND=no
-fi
-
-      CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
-
-
-   # now check for the header.
-   if test "${AST_ALSA_FOUND}" = "yes"; then
-      ALSA_LIB="${pbxlibdir} -lasound "
-      # if --with-ALSA=DIR has been specified, use it.
-      if test "x${ALSA_DIR}" != "x"; then
-         ALSA_INCLUDE="-I${ALSA_DIR}/include"
-      fi
-      ALSA_INCLUDE="${ALSA_INCLUDE} "
-
-         # check for the header
-         ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
-         CPPFLAGS="${CPPFLAGS} ${ALSA_INCLUDE}"
-         ac_fn_c_check_header_compile "$LINENO" "alsa/asoundlib.h" "ac_cv_header_alsa_asoundlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_alsa_asoundlib_h" = xyes
-then :
-  ALSA_HEADER_FOUND=1
-else $as_nop
-  ALSA_HEADER_FOUND=0
-fi
-
-         CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
-
-      if test "x${ALSA_HEADER_FOUND}" = "x0" ; then
-         ALSA_LIB=""
-         ALSA_INCLUDE=""
-      else
-
-         PBX_ALSA=1
-         cat >>confdefs.h <<_ACEOF
-#define HAVE_ALSA 1
-_ACEOF
-
-      fi
-   fi
-fi
-
-
-
 
 if test "x${PBX_BFD}" != "x1" -a "${USE_BFD}" != "no"; then
    pbxlibdir=""
diff --git a/configure.ac b/configure.ac
index af4e316..846d311 100644
--- a/configure.ac
+++ b/configure.ac
@@ -521,7 +521,6 @@
 # by the --with option name (the third field),
 # to make things easier for the users.
 
-AST_EXT_LIB_SETUP([ALSA], [Advanced Linux Sound Architecture], [asound])
 AST_EXT_LIB_SETUP([BFD], [Debug symbol decoding], [bfd])
 
 # BKTR is used for backtrace support on platforms that do not
@@ -1610,8 +1609,6 @@
 
 # do the package library checks now
 
-AST_EXT_LIB_CHECK([ALSA], [asound], [snd_pcm_open], [alsa/asoundlib.h])
-
 AST_EXT_LIB_CHECK([BFD], [bfd], [bfd_openr], [bfd.h])
 # Fedora/RedHat/CentOS require extra libraries
 AST_EXT_LIB_CHECK([BFD], [bfd], [bfd_openr], [bfd.h], [-ldl -liberty])
diff --git a/contrib/scripts/install_prereq b/contrib/scripts/install_prereq
index 590ada5..5843853 100755
--- a/contrib/scripts/install_prereq
+++ b/contrib/scripts/install_prereq
@@ -39,7 +39,7 @@
 # Asterisk: basic requirements:
 PACKAGES_RH="$PACKAGES_RH libedit-devel jansson-devel libuuid-devel sqlite-devel libxml2-devel"
 # Asterisk: for addons:
-PACKAGES_RH="$PACKAGES_RH speex-devel speexdsp-devel libogg-devel libvorbis-devel alsa-lib-devel portaudio-devel libcurl-devel xmlstarlet bison flex"
+PACKAGES_RH="$PACKAGES_RH speex-devel speexdsp-devel libogg-devel libvorbis-devel portaudio-devel libcurl-devel xmlstarlet bison flex"
 PACKAGES_RH="$PACKAGES_RH postgresql-devel unixODBC-devel neon-devel gmime-devel lua-devel uriparser-devel libxslt-devel openssl-devel"
 PACKAGES_RH="$PACKAGES_RH mysql-devel bluez-libs-devel radcli-devel freetds-devel jack-audio-connection-kit-devel bash libcap-devel"
 PACKAGES_RH="$PACKAGES_RH net-snmp-devel iksemel-devel corosynclib-devel newt-devel popt-devel libical-devel spandsp-devel"
@@ -55,7 +55,7 @@
 # Asterisk: basic requirements:
 PACKAGES_SUSE="$PACKAGES_SUSE libedit-devel libjansson-devel libuuid-devel sqlite3-devel libxml2-devel"
 # Asterisk: for addons:
-PACKAGES_SUSE="$PACKAGES_SUSE speex-devel speexdsp-devel libogg-devel libvorbis-devel alsa-devel portaudio-devel libcurl-devel xmlstarlet bison flex"
+PACKAGES_SUSE="$PACKAGES_SUSE speex-devel speexdsp-devel libogg-devel libvorbis-devel portaudio-devel libcurl-devel xmlstarlet bison flex"
 PACKAGES_SUSE="$PACKAGES_SUSE postgresql-devel unixODBC-devel libneon-devel gmime-devel lua-devel liburiparser-devel libxslt-devel libopenssl-devel"
 PACKAGES_SUSE="$PACKAGES_SUSE libmysqlclient-devel bluez-devel freeradius-client-devel freetds-devel bash libcap-devel"
 PACKAGES_SUSE="$PACKAGES_SUSE net-snmp-devel iksemel-devel libcorosync-devel newt-devel popt-devel libical-devel spandsp-devel"
@@ -71,7 +71,7 @@
 # Asterisk: basic requirements:
 PACKAGES_ARCH="$PACKAGES_ARCH libedit jansson libutil-linux libxml2 sqlite"
 # Asterisk: for addons:
-PACKAGES_ARCH="$PACKAGES_ARCH speex speexdsp libogg libvorbis alsa-lib portaudio curl xmlstarlet bison flex"
+PACKAGES_ARCH="$PACKAGES_ARCH speex speexdsp libogg libvorbis portaudio curl xmlstarlet bison flex"
 PACKAGES_ARCH="$PACKAGES_ARCH postgresql-libs unixodbc neon gmime lua uriparser libxslt openssl"
 PACKAGES_ARCH="$PACKAGES_ARCH libmariadbclient bluez-libs radcli freetds bash libcap"
 PACKAGES_ARCH="$PACKAGES_ARCH net-snmp libnewt popt libical spandsp"
@@ -87,7 +87,7 @@
 # Asterisk: basic requirements:
 PACKAGES_GENTOO="$PACKAGES_GENTOO dev-libs/libedit dev-libs/jansson sys-libs/e2fsprogs-libs dev-libs/libxml2 dev-db/sqlite"
 # Asterisk: for addons:
-PACKAGES_GENTOO="$PACKAGES_GENTOO media-libs/speex media-libs/speexdsp media-libs/libogg media-libs/libvorbis media-libs/alsa-lib media-libs/portaudio net-misc/curl app-text/xmlstarlet sys-devel/bison sys-devel/flex"
+PACKAGES_GENTOO="$PACKAGES_GENTOO media-libs/speex media-libs/speexdsp media-libs/libogg media-libs/libvorbis media-libs/portaudio net-misc/curl app-text/xmlstarlet sys-devel/bison sys-devel/flex"
 PACKAGES_GENTOO="$PACKAGES_GENTOO dev-db/postgresql dev-db/unixODBC net-libs/neon dev-libs/gmime dev-lang/lua dev-libs/uriparser dev-libs/libxslt dev-libs/openssl"
 PACKAGES_GENTOO="$PACKAGES_GENTOO virtual/libmysqlclient net-wireless/bluez net-dialup/radiusclient-ng dev-db/freetds app-shells/bash sys-libs/libcap"
 PACKAGES_GENTOO="$PACKAGES_GENTOO net-analyzer/net-snmp dev-libs/iksemel sys-cluster/corosync dev-libs/newt dev-libs/popt dev-libs/libical media-libs/spandsp"
@@ -103,7 +103,7 @@
 # Asterisk: basic requirements:
 PACKAGES_NBSD="$PACKAGES_NBSD editline jansson sqlite3 libuuid libxml2"
 # Asterisk: for addons:
-PACKAGES_NBSD="$PACKAGES_NBSD speex speexdsp libogg libvorbis alsa-lib portaudio-devel curl bison flex"
+PACKAGES_NBSD="$PACKAGES_NBSD speex speexdsp libogg libvorbis portaudio-devel curl bison flex"
 PACKAGES_NBSD="$PACKAGES_NBSD postgresql10-client unixodbc neon gmime lua52 uriparser libxslt openssl"
 PACKAGES_NBSD="$PACKAGES_NBSD mysql-client radiusclient-ng freetds bash"
 PACKAGES_NBSD="$PACKAGES_NBSD net-snmp iksemel popt libical spandsp"
@@ -135,7 +135,7 @@
 # Asterisk: basic requirements:
 PACKAGES_FBSD="$PACKAGES_FBSD libedit jansson e2fsprogs-libuuid sqlite3 libxml2"
 # Asterisk: for addons:
-PACKAGES_FBSD="$PACKAGES_FBSD speex speexdsp libogg libvorbis alsa-lib portaudio curl xmlstarlet bison flex"
+PACKAGES_FBSD="$PACKAGES_FBSD speex speexdsp libogg libvorbis portaudio curl xmlstarlet bison flex"
 PACKAGES_FBSD="$PACKAGES_FBSD postgresql10-client unixODBC neon gmime26 lua52 uriparser libxslt openssl"
 PACKAGES_FBSD="$PACKAGES_FBSD mysql57-client radcli freetds"
 PACKAGES_FBSD="$PACKAGES_FBSD net-snmp iksemel corosync newt popt libical spandsp"
@@ -151,7 +151,7 @@
 # Asterisk: basic requirements:
 PACKAGES_DBSD="$PACKAGES_DBSD libedit jansson e2fsprogs-libuuid sqlite3 libxml2"
 # Asterisk: for addons:
-PACKAGES_DBSD="$PACKAGES_DBSD speex speexdsp libogg libvorbis alsa-lib portaudio curl xmlstarlet bison flex"
+PACKAGES_DBSD="$PACKAGES_DBSD speex speexdsp libogg libvorbis portaudio curl xmlstarlet bison flex"
 PACKAGES_DBSD="$PACKAGES_DBSD postgresql10-client unixODBC neon gmime26 lua52 uriparser libxslt libressl"
 PACKAGES_DBSD="$PACKAGES_DBSD mariadb101-client radcli freetds"
 PACKAGES_DBSD="$PACKAGES_DBSD net-snmp iksemel corosync newt popt libical spandsp"
diff --git a/doc/UPGRADE-staging/chan_alsa_removal.txt b/doc/UPGRADE-staging/chan_alsa_removal.txt
new file mode 100644
index 0000000..baf91af
--- /dev/null
+++ b/doc/UPGRADE-staging/chan_alsa_removal.txt
@@ -0,0 +1,6 @@
+Subject: chan_alsa
+Master-Only: True
+
+This module was deprecated in Asterisk 19
+and is now being removed in accordance with
+the Asterisk Module Deprecation policy.
diff --git a/include/asterisk/autoconfig.h.in b/include/asterisk/autoconfig.h.in
index a86d168..f336b22 100644
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -44,9 +44,6 @@
 /* Define to 1 if <alloca.h> works. */
 #undef HAVE_ALLOCA_H
 
-/* Define to 1 if you have the Advanced Linux Sound Architecture library. */
-#undef HAVE_ALSA
-
 /* Define to 1 if you have the <arpa/inet.h> header file. */
 #undef HAVE_ARPA_INET_H
 
diff --git a/include/asterisk/doxygen/licensing.h b/include/asterisk/doxygen/licensing.h
index fa9e73e..99d70e0 100644
--- a/include/asterisk/doxygen/licensing.h
+++ b/include/asterisk/doxygen/licensing.h
@@ -29,12 +29,6 @@
  * This section contains a (not yet complete) list of libraries that are used
  * by various parts of Asterisk, including related licensing information.
  *
- * \subsection alsa_lib ALSA Library
- * \arg <b>Library</b>: libasound
- * \arg <b>Website</b>: http://www.alsa-project.org
- * \arg <b>Used by</b>: chan_alsa
- * \arg <b>License</b>: LGPL
- *
  * \subsection openssl_lib OpenSSL
  * \arg <b>Library</b>: libcrypto, libssl
  * \arg <b>Website</b>: http://www.openssl.org
@@ -57,8 +51,7 @@
  * \arg <b>Note</b>:    Even though PortAudio is licensed under a BSD style
  *                      license, PortAudio will make use of some audio interface,
  *                      depending on how it was built.  That audio interface may
- *                      introduce additional licensing restrictions.  On Linux,
- *                      this would most commonly be ALSA: \ref alsa_lib.
+ *                      introduce additional licensing restrictions.
  *
  * \subsection rawlist Raw list of libraries that used by any part of Asterisk
  * \li c-client.a (app_voicemail with IMAP support)
diff --git a/makeopts.in b/makeopts.in
index 0f6cb91..50fc8eb 100644
--- a/makeopts.in
+++ b/makeopts.in
@@ -130,9 +130,6 @@
 AST_RPATH=@AST_RPATH@
 AST_FORTIFY_SOURCE=@AST_FORTIFY_SOURCE@
 
-ALSA_INCLUDE=@ALSA_INCLUDE@
-ALSA_LIB=@ALSA_LIB@
-
 BFD_INCLUDE=@BFD_INCLUDE@
 BFD_LIB=@BFD_LIB@
 
diff --git a/menuselect/example_menuselect-tree b/menuselect/example_menuselect-tree
index 624a658..81c436a 100644
--- a/menuselect/example_menuselect-tree
+++ b/menuselect/example_menuselect-tree
@@ -183,9 +183,6 @@
 	<category name="MENUSELECT_CHANNELS" displayname="Channel Drivers">
 		<member name="chan_agent" displayname="Agent Proxy Channel" remove_on_change="channels/chan_agent.o channels/chan_agent.so">
 		</member>
-		<member name="chan_alsa" displayname="ALSA Console Channel Driver" remove_on_change="channels/chan_alsa.o channels/chan_alsa.so">
-	<depend>asound</depend>
-		</member>
 		<member name="chan_features" displayname="Feature Proxy Channel" remove_on_change="channels/chan_features.o channels/chan_features.so">
 		</member>
 		<member name="chan_h323" displayname="The NuFone Network's Open H.323 Channel Driver" remove_on_change="channels/chan_h323.o channels/chan_h323.so">
diff --git a/menuselect/test/menuselect-tree b/menuselect/test/menuselect-tree
index 73c78bc..6bad4ca 100644
--- a/menuselect/test/menuselect-tree
+++ b/menuselect/test/menuselect-tree
@@ -193,9 +193,6 @@
 <member name="chan_agent" displayname="Agent Proxy Channel" remove_on_change="channels/chan_agent.o channels/chan_agent.so">
         <depend>chan_local</depend>
 </member>
-<member name="chan_alsa" displayname="ALSA Console Channel Driver" remove_on_change="channels/chan_alsa.o channels/chan_alsa.so">
-	<depend>asound</depend>
-</member>
 <member name="chan_console" displayname="Console Channel Driver" remove_on_change="channels/chan_console.o channels/chan_console.so">
 	<depend>portaudio</depend>
 </member>
diff --git a/tests/CI/buildAsterisk.sh b/tests/CI/buildAsterisk.sh
index 75beb4b..9e3cb66 100755
--- a/tests/CI/buildAsterisk.sh
+++ b/tests/CI/buildAsterisk.sh
@@ -156,7 +156,7 @@
 		mod_disables+=" cdr_adaptive_odbc cdr_custom cdr_manager cdr_odbc cdr_pgsql cdr_radius"
 		mod_disables+=" cdr_tds"
 		mod_disables+=" cel_odbc cel_pgsql cel_radius cel_sqlite3_custom cel_tds"
-		mod_disables+=" chan_alsa chan_console chan_motif chan_rtp chan_unistim"
+		mod_disables+=" chan_console chan_motif chan_rtp chan_unistim"
 		mod_disables+=" func_frame_trace func_pitchshift func_speex func_volume func_dialgroup"
 		mod_disables+=" func_periodic_hook func_sprintf func_enum func_extstate func_sysinfo func_iconv"
 		mod_disables+=" func_callcompletion func_version func_rand func_sha1 func_module func_md5"

-- 
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Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: I5c8afb781528afdf55d237e3bffa5e4a862ae8c7
Gerrit-Change-Number: 19564
Gerrit-PatchSet: 5
Gerrit-Owner: Michael Bradeen <mbradeen at sangoma.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at sangoma.com>
Gerrit-Reviewer: N A <asterisk at phreaknet.org>
Gerrit-MessageType: merged
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