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c09e8c8a2a27d8eea9ad4bb7d1b24028b6e99b51
ModemManager/plugins/huawei/mm-call-huawei.c
Aleksander Morgado c9a56605ca huawei,call: check for ^CVOICE support and enable audio streaming 
USB sticks only support voice if ^CVOICE returns 0.  And to enable audio
streaming on the "Application" port (whatever is returned by AT^DDSETEX=?)
we need to send AT^DDSETEX=<port> after starting the call.  After that
the serial port will send and accept signed 16-bit 8000hz PCM audio, or
whatever format is returned by ^CVOICE?.

This patch is a rework of the original implementation by:
Dan Williams <dcbw@redhat.com>
2018-10-16 17:09:21 +00:00

446 lines
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details:
*
* Copyright (C) 2015 Riccardo Vangelisti <riccardo.vangelisti@sadel.it>
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <ModemManager.h>
#define _LIBMM_INSIDE_MM
#include <libmm-glib.h>
#include "mm-log.h"
#include "mm-base-modem-at.h"
#include "mm-broadband-modem-huawei.h"
#include "mm-call-huawei.h"
G_DEFINE_TYPE (MMCallHuawei, mm_call_huawei, MM_TYPE_BASE_CALL)
enum {
PROP_0,
PROP_AUDIO_HZ,
PROP_AUDIO_BITS,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
struct _MMCallHuaweiPrivate {
GRegex *conf_regex;
GRegex *conn_regex;
GRegex *cend_regex;
GRegex *ddtmf_regex;
guint audio_hz;
guint audio_bits;
};
/*****************************************************************************/
/* Audio channel setup */
typedef struct {
MMBaseModem *modem;
MMPort *audio_port;
MMCallAudioFormat *audio_format;
} SetupAudioChannelContext;
static void
setup_audio_channel_context_free (SetupAudioChannelContext *ctx)
{
g_clear_object (&ctx->audio_port);
g_clear_object (&ctx->audio_format);
g_clear_object (&ctx->modem);
g_slice_free (SetupAudioChannelContext, ctx);
}
static gboolean
setup_audio_channel_finish (MMBaseCall *self,
GAsyncResult *res,
MMPort **audio_port,
MMCallAudioFormat **audio_format,
GError **error)
{
SetupAudioChannelContext *ctx;
if (!g_task_propagate_boolean (G_TASK (res), error))
return FALSE;
ctx = g_task_get_task_data (G_TASK (res));
if (audio_port && ctx->audio_port)
*audio_port = g_object_ref (ctx->audio_port);
if (audio_format && ctx->audio_format)
*audio_format = g_object_ref (ctx->audio_format);
return TRUE;
}
static void
ddsetex_ready (MMBaseModem *modem,
GAsyncResult *res,
GTask *task)
{
MMCallHuawei *self;
SetupAudioChannelContext *ctx;
GError *error = NULL;
const gchar *response = NULL;
gchar *resolution_str;
response = mm_base_modem_at_command_finish (modem, res, &error);
if (!response) {
mm_dbg ("Error enabling audio streaming: '%s'", error->message);
g_task_return_error (task, error);
g_object_unref (task);
return;
}
self = g_task_get_source_object (task);
ctx = g_task_get_task_data (task);
/* Setup audio format */
g_assert (self->priv->audio_hz && self->priv->audio_bits);
resolution_str = g_strdup_printf ("s%ule", self->priv->audio_bits);
ctx->audio_format = mm_call_audio_format_new ();
mm_call_audio_format_set_encoding (ctx->audio_format, "pcm");
mm_call_audio_format_set_resolution (ctx->audio_format, resolution_str);
mm_call_audio_format_set_rate (ctx->audio_format, self->priv->audio_hz);
/* The QCDM port, if present, switches from QCDM to voice while
* a voice call is active. */
ctx->audio_port = MM_PORT (mm_base_modem_get_port_qcdm (modem));
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
static void
setup_audio_channel (MMBaseCall *_self,
GAsyncReadyCallback callback,
gpointer user_data)
{
SetupAudioChannelContext *ctx;
MMCallHuawei *self;
GTask *task;
MMBaseModem *modem = NULL;
self = MM_CALL_HUAWEI (_self);
task = g_task_new (self, NULL, callback, user_data);
/* If there is no CVOICE support, no custom audio setup required
* (i.e. audio path is externally managed) */
if (!self->priv->audio_hz && !self->priv->audio_bits) {
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
ctx = g_slice_new0 (SetupAudioChannelContext);
g_object_get (self,
MM_BASE_CALL_MODEM, &ctx->modem,
NULL);
g_task_set_task_data (task, ctx, (GDestroyNotify) setup_audio_channel_context_free);
/* Enable audio streaming on the audio port */
mm_base_modem_at_command (modem,
"AT^DDSETEX=2",
5,
FALSE,
(GAsyncReadyCallback)ddsetex_ready,
task);
}
/*****************************************************************************/
/* In-call unsolicited events */
static void
huawei_voice_ringback_tone (MMPortSerialAt *port,
GMatchInfo *match_info,
MMCallHuawei *self)
{
guint call_x = 0;
if (!mm_get_uint_from_match_info (match_info, 1, &call_x))
return;
mm_dbg ("Ringback tone from call id '%u'", call_x);
if (mm_gdbus_call_get_state (MM_GDBUS_CALL (self)) == MM_CALL_STATE_DIALING)
mm_base_call_change_state (MM_BASE_CALL (self), MM_CALL_STATE_RINGING_OUT, MM_CALL_STATE_REASON_OUTGOING_STARTED);
}
static void
huawei_voice_call_connection (MMPortSerialAt *port,
GMatchInfo *match_info,
MMCallHuawei *self)
{
guint call_x = 0;
guint call_type = 0;
if (!mm_get_uint_from_match_info (match_info, 1, &call_x))
return;
if (!mm_get_uint_from_match_info (match_info, 2, &call_type))
return;
mm_dbg ("Call id '%u' of type '%u' connected", call_x, call_type);
if (mm_gdbus_call_get_state (MM_GDBUS_CALL (self)) == MM_CALL_STATE_RINGING_OUT)
mm_base_call_change_state (MM_BASE_CALL (self), MM_CALL_STATE_ACTIVE, MM_CALL_STATE_REASON_ACCEPTED);
}
static void
huawei_voice_call_end (MMPortSerialAt *port,
GMatchInfo *match_info,
MMCallHuawei *self)
{
guint call_x = 0;
guint duration = 0;
guint cc_cause = 0;
guint end_status = 0;
if (!mm_get_uint_from_match_info (match_info, 1, &call_x))
return;
if (!mm_get_uint_from_match_info (match_info, 2, &duration))
return;
if (!mm_get_uint_from_match_info (match_info, 3, &end_status))
return;
/* This is optional */
mm_get_uint_from_match_info (match_info, 4, &cc_cause);
mm_dbg ("Call id '%u' terminated with status '%u' and cause '%u'. Duration of call '%d'",
call_x, end_status, cc_cause, duration);
mm_base_call_change_state (MM_BASE_CALL (self), MM_CALL_STATE_TERMINATED, MM_CALL_STATE_REASON_TERMINATED);
}
static void
huawei_voice_received_dtmf (MMPortSerialAt *port,
GMatchInfo *match_info,
MMCallHuawei *self)
{
gchar *key;
key = g_match_info_fetch (match_info, 1);
if (!key)
return;
mm_dbg ("Received DTMF '%s'", key);
mm_base_call_received_dtmf (MM_BASE_CALL (self), key);
g_free (key);
}
static gboolean
common_setup_cleanup_unsolicited_events (MMCallHuawei *self,
gboolean enable,
GError **error)
{
MMBaseModem *modem = NULL;
GList *ports, *l;
if (G_UNLIKELY (!self->priv->conf_regex))
self->priv->conf_regex = g_regex_new ("\\r\\n\\^CONF:\\s*(\\d+)\\r\\n",
G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
if (G_UNLIKELY (!self->priv->conn_regex))
self->priv->conn_regex = g_regex_new ("\\r\\n\\^CONN:\\s*(\\d+),(\\d+)\\r\\n",
G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
if (G_UNLIKELY (!self->priv->cend_regex))
self->priv->cend_regex = g_regex_new ("\\r\\n\\^CEND:\\s*(\\d+),\\s*(\\d+),\\s*(\\d+),?\\s*(\\d*)\\r\\n",
G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
if (G_UNLIKELY (!self->priv->ddtmf_regex))
self->priv->ddtmf_regex = g_regex_new ("\\r\\n\\^DDTMF:\\s*([0-9A-D\\*\\#])\\r\\n",
G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
g_object_get (self,
MM_BASE_CALL_MODEM, &modem,
NULL);
ports = mm_broadband_modem_huawei_get_at_port_list (MM_BROADBAND_MODEM_HUAWEI (modem));
for (l = ports; l; l = g_list_next (l)) {
MMPortSerialAt *port;
port = MM_PORT_SERIAL_AT (l->data);
mm_port_serial_at_add_unsolicited_msg_handler (
port,
self->priv->conf_regex,
enable ? (MMPortSerialAtUnsolicitedMsgFn)huawei_voice_ringback_tone : NULL,
enable ? self : NULL,
NULL);
mm_port_serial_at_add_unsolicited_msg_handler (
port,
self->priv->conn_regex,
enable ? (MMPortSerialAtUnsolicitedMsgFn)huawei_voice_call_connection : NULL,
enable ? self : NULL,
NULL);
mm_port_serial_at_add_unsolicited_msg_handler (
port,
self->priv->cend_regex,
enable ? (MMPortSerialAtUnsolicitedMsgFn)huawei_voice_call_end : NULL,
enable ? self : NULL,
NULL);
mm_port_serial_at_add_unsolicited_msg_handler (
port,
self->priv->ddtmf_regex,
enable ? (MMPortSerialAtUnsolicitedMsgFn)huawei_voice_received_dtmf: NULL,
enable ? self : NULL,
NULL);
}
g_list_free_full (ports, g_object_unref);
g_object_unref (modem);
return TRUE;
}
static gboolean
setup_unsolicited_events (MMBaseCall *self,
GError **error)
{
return common_setup_cleanup_unsolicited_events (MM_CALL_HUAWEI (self), TRUE, error);
}
static gboolean
cleanup_unsolicited_events (MMBaseCall *self,
GError **error)
{
return common_setup_cleanup_unsolicited_events (MM_CALL_HUAWEI (self), FALSE, error);
}
/*****************************************************************************/
MMBaseCall *
mm_call_huawei_new (MMBaseModem *modem,
MMCallDirection direction,
const gchar *number,
guint audio_hz,
guint audio_bits)
{
return MM_BASE_CALL (g_object_new (MM_TYPE_CALL_HUAWEI,
MM_BASE_CALL_MODEM, modem,
"direction", direction,
"number", number,
MM_CALL_HUAWEI_AUDIO_HZ, audio_hz,
MM_CALL_HUAWEI_AUDIO_BITS, audio_bits,
MM_BASE_CALL_SUPPORTS_DIALING_TO_RINGING, TRUE,
MM_BASE_CALL_SUPPORTS_RINGING_TO_ACTIVE, TRUE,
NULL));
}
static void
mm_call_huawei_init (MMCallHuawei *self)
{
/* Initialize private data */
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, MM_TYPE_CALL_HUAWEI, MMCallHuaweiPrivate);
}
static void
set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MMCallHuawei *self = MM_CALL_HUAWEI (object);
switch (prop_id) {
case PROP_AUDIO_HZ:
self->priv->audio_hz = g_value_get_uint (value);
break;
case PROP_AUDIO_BITS:
self->priv->audio_bits = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MMCallHuawei *self = MM_CALL_HUAWEI (object);
switch (prop_id) {
case PROP_AUDIO_HZ:
g_value_set_uint (value, self->priv->audio_hz);
break;
case PROP_AUDIO_BITS:
g_value_set_uint (value, self->priv->audio_bits);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
finalize (GObject *object)
{
MMCallHuawei *self = MM_CALL_HUAWEI (object);
if (self->priv->conf_regex)
g_regex_unref (self->priv->conf_regex);
if (self->priv->conn_regex)
g_regex_unref (self->priv->conn_regex);
if (self->priv->cend_regex)
g_regex_unref (self->priv->cend_regex);
if (self->priv->ddtmf_regex)
g_regex_unref (self->priv->ddtmf_regex);
G_OBJECT_CLASS (mm_call_huawei_parent_class)->finalize (object);
}
static void
mm_call_huawei_class_init (MMCallHuaweiClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MMBaseCallClass *base_call_class = MM_BASE_CALL_CLASS (klass);
g_type_class_add_private (object_class, sizeof (MMCallHuaweiPrivate));
object_class->get_property = get_property;
object_class->set_property = set_property;
object_class->finalize = finalize;
base_call_class->setup_unsolicited_events = setup_unsolicited_events;
base_call_class->cleanup_unsolicited_events = cleanup_unsolicited_events;
base_call_class->setup_audio_channel = setup_audio_channel;
base_call_class->setup_audio_channel_finish = setup_audio_channel_finish;
properties[PROP_AUDIO_HZ] =
g_param_spec_uint (MM_CALL_HUAWEI_AUDIO_HZ,
"Audio Hz",
"Voice call audio hz if call audio is routed via the host",
0, 24000, 0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_AUDIO_HZ, properties[PROP_AUDIO_HZ]);
properties[PROP_AUDIO_BITS] =
g_param_spec_uint (MM_CALL_HUAWEI_AUDIO_BITS,
"Audio Bits",
"Voice call audio bits if call audio is routed via the host",
0, 24, 0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class, PROP_AUDIO_BITS, properties[PROP_AUDIO_BITS]);
}
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