--- /dev/null
+/*
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthmct@yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Anthony Minessale II <anthmct@yahoo.com>
+ *
+ *
+ * mod_portaudio.c -- PortAudio Endpoint Module
+ *
+ */
+#include <switch.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include <alsa/asoundlib.h>
+
+#define MY_EVENT_RINGING "alsa::ringing"
+
+static const char modname[] = "mod_alsa";
+
+static switch_memory_pool_t *module_pool = NULL;
+//static int running = 1;
+
+#define SAMPLE_TYPE paInt16
+//#define SAMPLE_TYPE paFloat32
+typedef short SAMPLE;
+
+typedef switch_status_t (*pa_command_t) (char **argv, int argc, switch_stream_handle_t *stream);
+
+typedef enum {
+ GFLAG_NONE = 0,
+ GFLAG_EAR = (1 << 0),
+ GFLAG_MOUTH = (1 << 1),
+ GFLAG_RING = (1 << 2)
+} GFLAGS;
+
+typedef enum {
+ TFLAG_IO = (1 << 0),
+ TFLAG_INBOUND = (1 << 1),
+ TFLAG_OUTBOUND = (1 << 2),
+ TFLAG_DTMF = (1 << 3),
+ TFLAG_VOICE = (1 << 4),
+ TFLAG_HANGUP = (1 << 5),
+ TFLAG_LINEAR = (1 << 6),
+ TFLAG_ANSWER = (1 << 7),
+ TFLAG_HUP = (1 << 8),
+ TFLAG_MASTER = (1 << 9)
+} TFLAGS;
+
+struct private_object {
+ unsigned int flags;
+ switch_core_session_t *session;
+ switch_caller_profile_t *caller_profile;
+ char call_id[50];
+ int sample_rate;
+ int codec_ms;
+ switch_mutex_t *flag_mutex;
+ char *hold_file;
+ switch_file_handle_t fh;
+ switch_file_handle_t *hfh;
+ switch_frame_t hold_frame;
+ unsigned char holdbuf[SWITCH_RECOMMENDED_BUFFER_SIZE];
+ switch_codec_t write_codec;
+ switch_timer_t timer;
+ struct private_object *next;
+};
+
+typedef struct private_object private_t;
+
+static struct {
+ int debug;
+ int port;
+ char *cid_name;
+ char *cid_num;
+ char *dialplan;
+ char *ring_file;
+ char *hold_file;
+ char *timer_name;
+ int call_id;
+ switch_hash_t *call_hash;
+ switch_mutex_t *device_lock;
+ switch_mutex_t *pvt_lock;
+ switch_mutex_t *flag_mutex;
+ int sample_rate;
+ int codec_ms;
+ snd_pcm_t *audio_stream_in;
+ snd_pcm_t *audio_stream_out;
+ snd_pcm_t *ring_stream;
+
+ switch_codec_t read_codec;
+ switch_codec_t write_codec;
+ switch_frame_t read_frame;
+ switch_frame_t cng_frame;
+ unsigned char databuf[SWITCH_RECOMMENDED_BUFFER_SIZE];
+ unsigned char cngbuf[SWITCH_RECOMMENDED_BUFFER_SIZE];
+ private_t *call_list;
+ int ring_interval;
+ GFLAGS flags;
+ switch_timer_t timer;
+} globals;
+
+
+#define PA_MASTER 1
+#define PA_SLAVE 0
+
+
+SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_dialplan, globals.dialplan)
+ SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_cid_name, globals.cid_name)
+ SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_cid_num, globals.cid_num)
+ SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_ring_file, globals.ring_file)
+ SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_hold_file, globals.hold_file)
+ SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_timer_name, globals.timer_name)
+#define is_master(t) switch_test_flag(t, TFLAG_MASTER)
+ static void add_pvt(private_t * tech_pvt, int master);
+ static void remove_pvt(private_t * tech_pvt);
+ static switch_status_t channel_on_init(switch_core_session_t *session);
+ static switch_status_t channel_on_hangup(switch_core_session_t *session);
+ static switch_status_t channel_on_ring(switch_core_session_t *session);
+ static switch_status_t channel_on_loopback(switch_core_session_t *session);
+ static switch_status_t channel_on_transmit(switch_core_session_t *session);
+ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session,
+ switch_caller_profile_t *outbound_profile,
+ switch_core_session_t **new_session, switch_memory_pool_t **pool);
+ static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, int timeout, switch_io_flag_t flags, int stream_id);
+ static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, int timeout, switch_io_flag_t flags, int stream_id);
+ static switch_status_t channel_kill_channel(switch_core_session_t *session, int sig);
+ static switch_status_t engage_device(unsigned int samplerate, int codec_ms);
+ static switch_status_t engage_ring_device(unsigned int sample_rate, int channels);
+ static void deactivate_ring_device(void);
+
+ static switch_status_t load_config(void);
+ static switch_status_t pa_cmd(char *dest, switch_core_session_t *session, switch_stream_handle_t *stream);
+ static switch_status_t padep(char *dest, switch_core_session_t *session, switch_stream_handle_t *stream);
+
+
+/*
+ State methods they get called when the state changes to the specific state
+ returning SWITCH_STATUS_SUCCESS tells the core to execute the standard state method next
+ so if you fully implement the state you can return SWITCH_STATUS_FALSE to skip it.
+*/
+ static switch_status_t channel_on_init(switch_core_session_t *session)
+{
+ switch_channel_t *channel;
+ private_t *tech_pvt = NULL;
+ switch_time_t last;
+ int waitsec = globals.ring_interval * 1000000;
+ switch_file_handle_t fh = { 0 };
+ char *val, *ring_file = NULL, *hold_file = NULL;
+ int16_t abuf[2048];
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+
+ last = switch_time_now() - waitsec;
+
+
+
+ if ((val = switch_channel_get_variable(channel, "pa_hold_file"))) {
+ hold_file = val;
+ } else {
+ hold_file = globals.hold_file;
+ }
+
+ if (hold_file) {
+ tech_pvt->hold_file = switch_core_session_strdup(session, hold_file);
+ }
+
+ if (switch_test_flag(tech_pvt, TFLAG_OUTBOUND)) {
+
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL INIT %d %d\n",
+ switch_channel_get_name(channel), switch_channel_get_state(channel), switch_test_flag(tech_pvt, TFLAG_ANSWER));
+
+
+
+ if (engage_device(tech_pvt->sample_rate, tech_pvt->codec_ms) != SWITCH_STATUS_SUCCESS) {
+ switch_channel_hangup(channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (switch_test_flag(tech_pvt, TFLAG_OUTBOUND)) {
+ add_pvt(tech_pvt, PA_SLAVE);
+
+ ring_file = globals.ring_file;
+ if ((val = switch_channel_get_variable(channel, "pa_ring_file"))) {
+ ring_file = val;
+ }
+
+ if (switch_test_flag((&globals), GFLAG_RING)) {
+ ring_file = NULL;
+ }
+ switch_set_flag_locked((&globals), GFLAG_RING);
+ if (ring_file) {
+ if (switch_core_file_open(&fh,
+ ring_file,
+ globals.read_codec.implementation->number_of_channels,
+ globals.read_codec.implementation->samples_per_second,
+ SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT, NULL) == SWITCH_STATUS_SUCCESS) {
+
+ if (engage_ring_device(fh.samplerate, fh.channels) != SWITCH_STATUS_SUCCESS) {
+ switch_channel_hangup(channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Ring Error!\n");
+ switch_core_file_close(&fh);
+ return SWITCH_STATUS_GENERR;
+ }
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Cannot open %s, disabling ring file!\n", ring_file);
+ ring_file = NULL;
+ }
+ }
+ }
+
+ switch_core_session_queue_indication(session, SWITCH_MESSAGE_INDICATE_RINGING);
+ switch_channel_mark_ring_ready(channel);
+
+ while (switch_channel_get_state(channel) == CS_INIT && !switch_test_flag(tech_pvt, TFLAG_ANSWER)) {
+ if (switch_time_now() - last >= waitsec) {
+ char buf[512];
+ switch_event_t *event;
+
+ snprintf(buf, sizeof(buf), "BRRRRING! BRRRRING! call %s\n", tech_pvt->call_id);
+
+ if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, MY_EVENT_RINGING) == SWITCH_STATUS_SUCCESS) {
+ switch_event_add_header(event, SWITCH_STACK_BOTTOM, "event_info", "%s", buf);
+ switch_event_add_header(event, SWITCH_STACK_BOTTOM, "call_id", "%s", tech_pvt->call_id);
+ switch_channel_event_set_data(channel, event);
+ switch_event_fire(&event);
+ }
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s\n", buf);
+ last = switch_time_now();
+ if (ring_file) {
+ unsigned int pos = 0;
+ switch_core_file_seek(&fh, &pos, 0, SEEK_SET);
+ for (;;) {
+ switch_size_t olen = 1024;
+ switch_core_file_read(&fh, abuf, &olen);
+ if (olen == 0) {
+ break;
+ }
+ snd_pcm_writei(globals.ring_stream, abuf, (int) olen);
+ }
+ }
+ }
+
+ switch_yield(globals.read_codec.implementation->microseconds_per_frame);
+
+ }
+ switch_clear_flag_locked((&globals), GFLAG_RING);
+ }
+
+ if (ring_file) {
+ deactivate_ring_device();
+ switch_core_file_close(&fh);
+ switch_core_codec_destroy(&tech_pvt->write_codec);
+ switch_core_timer_destroy(&tech_pvt->timer);
+ }
+
+ if (switch_test_flag(tech_pvt, TFLAG_OUTBOUND)) {
+ if (!switch_test_flag(tech_pvt, TFLAG_ANSWER)) {
+ switch_channel_hangup(channel, SWITCH_CAUSE_NO_ANSWER);
+ return SWITCH_STATUS_SUCCESS;
+ }
+ }
+
+ switch_set_flag_locked(tech_pvt, TFLAG_IO);
+
+ /* Move Channel's State Machine to RING */
+ switch_channel_set_state(channel, CS_RING);
+
+ return SWITCH_STATUS_SUCCESS;
+
+}
+
+static switch_status_t channel_on_ring(switch_core_session_t *session)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL RING\n", switch_channel_get_name(channel));
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_on_execute(switch_core_session_t *session)
+{
+
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL EXECUTE\n", switch_channel_get_name(channel));
+
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static void deactivate_audio_device(void)
+{
+ switch_mutex_lock(globals.device_lock);
+ if (globals.audio_stream_in) {
+ snd_pcm_close(globals.audio_stream_in);
+ globals.audio_stream_in = NULL;
+ }
+ if (globals.audio_stream_out) {
+ snd_pcm_close(globals.audio_stream_out);
+ globals.audio_stream_out = NULL;
+ }
+ switch_mutex_unlock(globals.device_lock);
+}
+
+
+static void deactivate_ring_device(void)
+{
+ switch_mutex_lock(globals.device_lock);
+ if (globals.ring_stream) {
+ snd_pcm_close(globals.ring_stream);
+ globals.ring_stream = NULL;
+ }
+ switch_mutex_unlock(globals.device_lock);
+}
+
+
+
+static void add_pvt(private_t * tech_pvt, int master)
+{
+ private_t *tp;
+ uint8_t in_list = 0;
+
+ switch_mutex_lock(globals.pvt_lock);
+
+ if (switch_strlen_zero(tech_pvt->call_id)) {
+ snprintf(tech_pvt->call_id, sizeof(tech_pvt->call_id), "%d", ++globals.call_id);
+ switch_core_hash_insert(globals.call_hash, tech_pvt->call_id, tech_pvt);
+ switch_core_session_set_read_codec(tech_pvt->session, &globals.read_codec);
+ switch_core_session_set_write_codec(tech_pvt->session, &globals.write_codec);
+ }
+
+ for (tp = globals.call_list; tp; tp = tp->next) {
+ if (tp == tech_pvt) {
+ in_list = 1;
+ }
+ if (master) {
+ switch_clear_flag_locked(tp, TFLAG_MASTER);
+ }
+ }
+
+
+ if (master) {
+ if (!in_list) {
+ tech_pvt->next = globals.call_list;
+ globals.call_list = tech_pvt;
+ }
+ switch_set_flag_locked(tech_pvt, TFLAG_MASTER);
+
+ } else if (!in_list) {
+ for (tp = globals.call_list; tp && tp->next; tp = tp->next);
+ if (tp) {
+ tp->next = tech_pvt;
+ } else {
+ globals.call_list = tech_pvt;
+ }
+ }
+
+ switch_mutex_unlock(globals.pvt_lock);
+}
+
+static void remove_pvt(private_t * tech_pvt)
+{
+ private_t *tp, *last = NULL;
+
+ switch_mutex_lock(globals.pvt_lock);
+ for (tp = globals.call_list; tp; tp = tp->next) {
+ switch_clear_flag_locked(tp, TFLAG_MASTER);
+ if (tp == tech_pvt) {
+ if (last) {
+ last->next = tp->next;
+ } else {
+ globals.call_list = tp->next;
+ }
+ }
+ last = tp;
+ }
+
+ if (globals.call_list) {
+ switch_set_flag_locked(globals.call_list, TFLAG_MASTER);
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No more channels, deactivating audio\n");
+ deactivate_audio_device();
+ }
+
+ switch_mutex_unlock(globals.pvt_lock);
+}
+
+static switch_status_t channel_on_hangup(switch_core_session_t *session)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ remove_pvt(tech_pvt);
+
+ switch_clear_flag_locked(tech_pvt, TFLAG_IO);
+ switch_set_flag_locked(tech_pvt, TFLAG_HUP);
+
+ switch_core_hash_delete(globals.call_hash, tech_pvt->call_id);
+
+ if (tech_pvt->hfh) {
+ tech_pvt->hfh = NULL;
+ switch_core_file_close(&tech_pvt->fh);
+ }
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL HANGUP\n", switch_channel_get_name(channel));
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_kill_channel(switch_core_session_t *session, int sig)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ switch (sig) {
+ case SWITCH_SIG_KILL:
+ switch_set_flag_locked(tech_pvt, TFLAG_HUP);
+ switch_channel_hangup(channel, SWITCH_CAUSE_NORMAL_CLEARING);
+ break;
+ default:
+ break;
+ }
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL KILL\n", switch_channel_get_name(channel));
+
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_on_transmit(switch_core_session_t *session)
+{
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CHANNEL TRANSMIT\n");
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_on_loopback(switch_core_session_t *session)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CHANNEL LOOPBACK\n");
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+
+static switch_status_t channel_waitfor_read(switch_core_session_t *session, int ms, int stream_id)
+{
+ private_t *tech_pvt = NULL;
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_waitfor_write(switch_core_session_t *session, int ms, int stream_id)
+{
+ private_t *tech_pvt = NULL;
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ return SWITCH_STATUS_SUCCESS;
+
+}
+
+static switch_status_t channel_send_dtmf(switch_core_session_t *session, char *dtmf)
+{
+ private_t *tech_pvt = NULL;
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "DTMF ON CALL %s [%s]\n", tech_pvt->call_id, dtmf);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, int timeout, switch_io_flag_t flags, int stream_id)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+ int samples = 0;
+ switch_status_t status = SWITCH_STATUS_FALSE;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ if (!globals.audio_stream_in) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (switch_test_flag(tech_pvt, TFLAG_HUP)) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (!switch_test_flag(tech_pvt, TFLAG_IO)) {
+ goto cng;
+ }
+
+ if (!is_master(tech_pvt)) {
+ if (tech_pvt->hold_file) {
+ if (!tech_pvt->hfh) {
+ int codec_ms = tech_pvt->codec_ms ? tech_pvt->codec_ms : globals.codec_ms;
+ int sample_rate = tech_pvt->sample_rate ? tech_pvt->sample_rate : globals.sample_rate;
+
+ if (switch_core_codec_init(&tech_pvt->write_codec,
+ "L16",
+ NULL,
+ sample_rate,
+ codec_ms,
+ 1,
+ SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE,
+ NULL, switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
+ switch_core_codec_destroy(&globals.read_codec);
+ tech_pvt->hold_file = NULL;
+ goto cng;
+ }
+
+ if (switch_core_file_open(&tech_pvt->fh,
+ tech_pvt->hold_file,
+ globals.read_codec.implementation->number_of_channels,
+ globals.read_codec.implementation->samples_per_second,
+ SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT,
+ switch_core_session_get_pool(tech_pvt->session)) != SWITCH_STATUS_SUCCESS) {
+ switch_core_codec_destroy(&tech_pvt->write_codec);
+ tech_pvt->hold_file = NULL;
+ goto cng;
+ }
+
+ tech_pvt->hfh = &tech_pvt->fh;
+ tech_pvt->hold_frame.data = tech_pvt->holdbuf;
+ tech_pvt->hold_frame.buflen = sizeof(tech_pvt->holdbuf);
+ tech_pvt->hold_frame.rate = sample_rate;
+ tech_pvt->hold_frame.codec = &tech_pvt->write_codec;
+ }
+
+ goto hold;
+ }
+ cng:
+ switch_yield(globals.read_codec.implementation->microseconds_per_frame);
+ *frame = &globals.cng_frame;
+ return SWITCH_STATUS_SUCCESS;
+
+ hold:
+
+ {
+ switch_size_t olen = globals.read_codec.implementation->samples_per_frame;
+ if (switch_core_timer_next(&tech_pvt->timer) != SWITCH_STATUS_SUCCESS) {
+ switch_core_file_close(&tech_pvt->fh);
+ switch_core_codec_destroy(&tech_pvt->write_codec);
+ goto cng;
+ }
+ switch_core_file_read(tech_pvt->hfh, tech_pvt->hold_frame.data, &olen);
+
+ if (olen == 0) {
+ unsigned int pos = 0;
+ switch_core_file_seek(tech_pvt->hfh, &pos, 0, SEEK_SET);
+ goto cng;
+ }
+
+
+ tech_pvt->hold_frame.datalen = (uint32_t) (olen * sizeof(int16_t));
+ tech_pvt->hold_frame.samples = (uint32_t) olen;
+ tech_pvt->hold_frame.timestamp = tech_pvt->timer.samplecount;
+ *frame = &tech_pvt->hold_frame;
+
+ }
+
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ switch_mutex_lock(globals.device_lock);
+
+
+ if ((samples = snd_pcm_readi (globals.audio_stream_in, globals.read_frame.data, globals.read_codec.implementation->samples_per_frame)) != 0) {
+ globals.read_frame.datalen = samples / 2;
+ globals.read_frame.samples = globals.read_frame.datalen / 2;
+
+ switch_core_timer_check(&globals.timer);
+ globals.read_frame.timestamp = globals.timer.samplecount;
+ *frame = &globals.read_frame;
+
+ if (!switch_test_flag((&globals), GFLAG_MOUTH)) {
+ memset(globals.read_frame.data, 255, globals.read_frame.datalen);
+ }
+
+ status = SWITCH_STATUS_SUCCESS;
+ }
+ switch_mutex_unlock(globals.device_lock);
+
+ return status;
+}
+
+static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, int timeout, switch_io_flag_t flags, int stream_id)
+{
+ switch_channel_t *channel = NULL;
+ private_t *tech_pvt = NULL;
+ switch_status_t status = SWITCH_STATUS_FALSE;
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ if (!globals.audio_stream_out) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (switch_test_flag(tech_pvt, TFLAG_HUP)) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (!is_master(tech_pvt) || !switch_test_flag(tech_pvt, TFLAG_IO)) {
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ if (globals.audio_stream_out) {
+ if (switch_test_flag((&globals), GFLAG_EAR)) {
+ snd_pcm_writei(globals.audio_stream_out, (short *) frame->data, (int) (frame->datalen / sizeof(SAMPLE)));
+ }
+ status = SWITCH_STATUS_SUCCESS;
+ }
+
+ return status;
+
+}
+
+static switch_status_t channel_answer_channel(switch_core_session_t *session)
+{
+ private_t *tech_pvt;
+ switch_channel_t *channel = NULL;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg)
+{
+ switch_channel_t *channel;
+ private_t *tech_pvt;
+
+ channel = switch_core_session_get_channel(session);
+ assert(channel != NULL);
+
+ tech_pvt = switch_core_session_get_private(session);
+ assert(tech_pvt != NULL);
+
+
+ switch (msg->message_id) {
+ case SWITCH_MESSAGE_INDICATE_ANSWER:
+ channel_answer_channel(session);
+ break;
+ case SWITCH_MESSAGE_INDICATE_PROGRESS:
+ {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Engage Early Media\n");
+ switch_set_flag_locked(tech_pvt, TFLAG_IO);
+ }
+ default:
+ break;
+ }
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_api_interface_t send_dtmf_interface = {
+ /*.interface_name */ "padtmf",
+ /*.desc */ "DEPRICATED (see 'pa')",
+ /*.function */ padep,
+ /*.syntax */ "DEPRICATED (see 'pa')",
+ /*.next */ NULL
+};
+
+static switch_api_interface_t answer_call_interface = {
+ /*.interface_name */ "paoffhook",
+ /*.desc */ "DEPRICATED (see 'pa')",
+ /*.function */ padep,
+ /*.syntax */ "DEPRICATED (see 'pa')",
+ /*.next */ &send_dtmf_interface
+};
+
+static switch_api_interface_t channel_info_interface = {
+ /*.interface_name */ "painfo",
+ /*.desc */ "DEPRICATED (see 'pa')",
+ /*.function */ padep,
+ /*.syntax */ "DEPRICATED (see 'pa')",
+ /*.next */ &answer_call_interface
+};
+
+static switch_api_interface_t channel_hup_interface = {
+ /*.interface_name */ "pahup",
+ /*.desc */ "DEPRICATED (see 'pa')",
+ /*.function */ padep,
+ /*.syntax */ "DEPRICATED (see 'pa')",
+ /*.next */ &channel_info_interface
+};
+
+static switch_api_interface_t channel_call_interface = {
+ /*.interface_name */ "pacall",
+ /*.desc */ "DEPRICATED (see 'pa')",
+ /*.function */ padep,
+ /*.syntax */ "DEPRICATED (see 'pa')",
+ /*.next */ &channel_hup_interface
+};
+
+static switch_api_interface_t channel_api_interface = {
+ /*.interface_name */ "pa",
+ /*.desc */ "Alsa",
+ /*.function */ pa_cmd,
+ /*.syntax */ "<command> [<args>]",
+ /*.next */ &channel_call_interface
+};
+
+static const switch_state_handler_table_t channel_event_handlers = {
+ /*.on_init */ channel_on_init,
+ /*.on_ring */ channel_on_ring,
+ /*.on_execute */ channel_on_execute,
+ /*.on_hangup */ channel_on_hangup,
+ /*.on_loopback */ channel_on_loopback,
+ /*.on_transmit */ channel_on_transmit
+};
+
+static const switch_io_routines_t channel_io_routines = {
+ /*.outgoing_channel */ channel_outgoing_channel,
+ /*.read_frame */ channel_read_frame,
+ /*.write_frame */ channel_write_frame,
+ /*.kill_channel */ channel_kill_channel,
+ /*.waitfor_read */ channel_waitfor_read,
+ /*.waitfor_write */ channel_waitfor_write,
+ /*.send_dtmf */ channel_send_dtmf,
+ /*.receive_message */ channel_receive_message
+};
+
+static const switch_endpoint_interface_t channel_endpoint_interface = {
+ /*.interface_name */ "alsa",
+ /*.io_routines */ &channel_io_routines,
+ /*.event_handlers */ &channel_event_handlers,
+ /*.private */ NULL,
+ /*.next */ NULL
+};
+
+static const switch_loadable_module_interface_t channel_module_interface = {
+ /*.module_name */ modname,
+ /*.endpoint_interface */ &channel_endpoint_interface,
+ /*.timer_interface */ NULL,
+ /*.dialplan_interface */ NULL,
+ /*.codec_interface */ NULL,
+ /*.application_interface */ NULL,
+ /*.api_interface */ &channel_api_interface
+};
+
+/* Make sure when you have 2 sessions in the same scope that you pass the appropriate one to the routines
+ that allocate memory or you will have 1 channel with memory allocated from another channel's pool!
+*/
+static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session,
+ switch_caller_profile_t *outbound_profile,
+ switch_core_session_t **new_session, switch_memory_pool_t **pool)
+{
+
+ if ((*new_session = switch_core_session_request(&channel_endpoint_interface, pool)) != 0) {
+ private_t *tech_pvt;
+ switch_channel_t *channel;
+ switch_caller_profile_t *caller_profile;
+
+ switch_core_session_add_stream(*new_session, NULL);
+ if ((tech_pvt = (private_t *) switch_core_session_alloc(*new_session, sizeof(private_t))) != 0) {
+ memset(tech_pvt, 0, sizeof(*tech_pvt));
+ switch_mutex_init(&tech_pvt->flag_mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(*new_session));
+ channel = switch_core_session_get_channel(*new_session);
+ switch_core_session_set_private(*new_session, tech_pvt);
+ tech_pvt->session = *new_session;
+ globals.flags = GFLAG_EAR | GFLAG_MOUTH;
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Hey where is my memory pool?\n");
+ switch_core_session_destroy(new_session);
+ return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
+ }
+
+ if (outbound_profile) {
+ char name[128];
+ char *id = !switch_strlen_zero(outbound_profile->caller_id_number) ? outbound_profile->caller_id_number : "na";
+ snprintf(name, sizeof(name), "Alsa/%s", id);
+
+ switch_channel_set_name(channel, name);
+
+ caller_profile = switch_caller_profile_clone(*new_session, outbound_profile);
+ switch_channel_set_caller_profile(channel, caller_profile);
+ tech_pvt->caller_profile = caller_profile;
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Doh! no caller profile\n");
+ switch_core_session_destroy(new_session);
+ return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
+ }
+
+ switch_channel_set_flag(channel, CF_OUTBOUND);
+ switch_set_flag_locked(tech_pvt, TFLAG_OUTBOUND);
+ switch_channel_set_state(channel, CS_INIT);
+ return SWITCH_CAUSE_SUCCESS;
+ }
+
+ return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
+
+}
+
+
+SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface, char *filename)
+{
+
+ switch_status_t status;
+
+ if (switch_core_new_memory_pool(&module_pool) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "OH OH no pool\n");
+ return SWITCH_STATUS_TERM;
+ }
+
+
+
+ if ((status = load_config()) != SWITCH_STATUS_SUCCESS) {
+ return status;
+ }
+
+
+
+ switch_core_hash_init(&globals.call_hash, module_pool);
+ switch_mutex_init(&globals.device_lock, SWITCH_MUTEX_NESTED, module_pool);
+ switch_mutex_init(&globals.pvt_lock, SWITCH_MUTEX_NESTED, module_pool);
+ switch_mutex_init(&globals.flag_mutex, SWITCH_MUTEX_NESTED, module_pool);
+
+
+
+ if (switch_event_reserve_subclass(MY_EVENT_RINGING) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass!");
+ return SWITCH_STATUS_GENERR;
+ }
+
+ globals.read_frame.data = globals.databuf;
+ globals.read_frame.buflen = sizeof(globals.databuf);
+ globals.cng_frame.data = globals.cngbuf;
+ globals.cng_frame.buflen = sizeof(globals.cngbuf);
+ globals.cng_frame.datalen = sizeof(globals.cngbuf);
+ switch_set_flag((&globals.cng_frame), SFF_CNG);
+
+ /* connect my internal structure to the blank pointer passed to me */
+ *module_interface = &channel_module_interface;
+
+ /* indicate that the module should continue to be loaded */
+ return SWITCH_STATUS_SUCCESS;
+}
+
+
+static switch_status_t load_config(void)
+{
+ char *cf = "alsa.conf";
+ switch_xml_t cfg, xml, settings, param;
+
+ if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "open of %s failed\n", cf);
+ return SWITCH_STATUS_TERM;
+ }
+
+ memset(&globals, 0, sizeof(globals));
+
+
+ if ((settings = switch_xml_child(cfg, "settings"))) {
+ for (param = switch_xml_child(settings, "param"); param; param = param->next) {
+ char *var = (char *) switch_xml_attr_soft(param, "name");
+ char *val = (char *) switch_xml_attr_soft(param, "value");
+
+ if (!strcmp(var, "debug")) {
+ globals.debug = atoi(val);
+ } else if (!strcmp(var, "ring-interval")) {
+ globals.ring_interval = atoi(val);
+ } else if (!strcmp(var, "ring-file")) {
+ set_global_ring_file(val);
+ } else if (!strcmp(var, "hold-file")) {
+ set_global_hold_file(val);
+ } else if (!strcmp(var, "timer-name")) {
+ set_global_timer_name(val);
+ } else if (!strcmp(var, "sample-rate")) {
+ globals.sample_rate = atoi(val);
+ } else if (!strcmp(var, "codec-ms")) {
+ globals.codec_ms = atoi(val);
+ } else if (!strcmp(var, "dialplan")) {
+ set_global_dialplan(val);
+ } else if (!strcmp(var, "cid-name")) {
+ set_global_cid_name(val);
+ } else if (!strcmp(var, "cid-num")) {
+ set_global_cid_num(val);
+ }
+ }
+ }
+
+ if (!globals.dialplan) {
+ set_global_dialplan("default");
+ }
+
+ if (!globals.sample_rate) {
+ globals.sample_rate = 8000;
+ }
+
+ if (!globals.codec_ms) {
+ globals.codec_ms = 20;
+ }
+
+ if (!globals.ring_interval) {
+ globals.ring_interval = 5;
+ }
+
+ if (!globals.timer_name) {
+ set_global_timer_name("soft");
+ }
+
+ switch_xml_free(xml);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MOD_DECLARE(switch_status_t) switch_module_shutdown(void)
+{
+ if (globals.read_codec.implementation) {
+ switch_core_codec_destroy(&globals.read_codec);
+ }
+
+ if (globals.write_codec.implementation) {
+ switch_core_codec_destroy(&globals.write_codec);
+ }
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+
+
+static switch_status_t engage_device(unsigned int sample_rate, int codec_ms)
+{
+ int err = 0;
+ snd_pcm_hw_params_t *hw_params = NULL;
+ char *device = "default";
+
+ if (globals.audio_stream_in && globals.audio_stream_out) {
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ if (globals.audio_stream_in) {
+ snd_pcm_close (globals.audio_stream_in);
+ globals.audio_stream_in = NULL;
+ }
+
+ if (globals.audio_stream_out) {
+ snd_pcm_close (globals.audio_stream_out);
+ globals.audio_stream_out = NULL;
+ }
+
+ if (!sample_rate) {
+ sample_rate = globals.sample_rate;
+ }
+
+ if (!codec_ms) {
+ codec_ms = globals.codec_ms;
+ }
+
+ if (switch_core_codec_init(&globals.read_codec,
+ "L16",
+ NULL, sample_rate, codec_ms, 1, SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, NULL,
+ NULL) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
+ return SWITCH_STATUS_FALSE;
+ } else {
+ if (switch_core_codec_init(&globals.write_codec,
+ "L16",
+ NULL,
+ sample_rate, codec_ms, 1, SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, NULL,
+ NULL) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't load codec?\n");
+ switch_core_codec_destroy(&globals.read_codec);
+ return SWITCH_STATUS_FALSE;
+ }
+ }
+
+ if (switch_core_timer_init(&globals.timer,
+ globals.timer_name, codec_ms, globals.read_codec.implementation->samples_per_frame,
+ module_pool) != SWITCH_STATUS_SUCCESS) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "setup timer failed!\n");
+ switch_core_codec_destroy(&globals.read_codec);
+ switch_core_codec_destroy(&globals.write_codec);
+ return SWITCH_STATUS_FALSE;
+ }
+
+
+
+ globals.read_frame.rate = sample_rate;
+ globals.read_frame.codec = &globals.read_codec;
+
+
+
+ switch_mutex_lock(globals.device_lock);
+ /* LOCKED ************************************************************************************************** */
+
+
+ if ((err = snd_pcm_open (&globals.audio_stream_out, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot open audio device %s (%s)\n",
+ device,
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot allocate hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_any (globals.audio_stream_out, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot initialize hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_access (globals.audio_stream_out, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set access type (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_format (globals.audio_stream_out, hw_params, SND_PCM_FORMAT_S16_LE)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample format (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_rate_near (globals.audio_stream_out, hw_params, &sample_rate, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample rate (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_channels (globals.audio_stream_out, hw_params, 1)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set channel count (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params (globals.audio_stream_out, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set parameters (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+
+ snd_pcm_hw_params_free (hw_params);
+ hw_params = NULL;
+
+
+
+ if ((err = snd_pcm_open (&globals.audio_stream_in, device, SND_PCM_STREAM_CAPTURE, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot open audio device %s (%s)\n",
+ device,
+ snd_strerror (err));
+ goto fail;
+ }
+ if ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot allocate hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_any (globals.audio_stream_in, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot initialize hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_access (globals.audio_stream_in, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set access type (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_format (globals.audio_stream_in, hw_params, SND_PCM_FORMAT_S16_LE)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample format (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_rate_near (globals.audio_stream_in, hw_params, &sample_rate, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample rate (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_channels (globals.audio_stream_in, hw_params, 1)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set channel count (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params (globals.audio_stream_in, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set parameters (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if (hw_params) {
+ snd_pcm_hw_params_free (hw_params);
+ hw_params = NULL;
+ }
+
+ if ((err = snd_pcm_prepare (globals.audio_stream_out)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot prepare audio interface for use (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_prepare (globals.audio_stream_in)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot prepare audio interface for use (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ switch_mutex_unlock(globals.device_lock);
+ return SWITCH_STATUS_SUCCESS;
+
+ fail:
+
+ if (hw_params) {
+ snd_pcm_hw_params_free (hw_params);
+ hw_params = NULL;
+ }
+
+ switch_mutex_unlock(globals.device_lock);
+
+ if (globals.audio_stream_in) {
+ snd_pcm_close (globals.audio_stream_in);
+ }
+
+ if (globals.audio_stream_out) {
+ snd_pcm_close (globals.audio_stream_out);
+ }
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't open audio device!\n");
+ switch_core_codec_destroy(&globals.read_codec);
+ switch_core_codec_destroy(&globals.write_codec);
+
+ return SWITCH_STATUS_FALSE;
+
+
+
+}
+
+
+static switch_status_t engage_ring_device(unsigned int sample_rate, int channels)
+{
+ int err = 0;
+ snd_pcm_hw_params_t *hw_params;
+ char *device = "default";
+
+ if (globals.ring_stream) {
+ return SWITCH_STATUS_SUCCESS;
+ }
+
+ if (!sample_rate) {
+ sample_rate = globals.sample_rate;
+ }
+
+ switch_mutex_lock(globals.device_lock);
+ /* LOCKED ************************************************************************************************** */
+
+
+ if ((err = snd_pcm_open (&globals.ring_stream, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot open audio device %s (%s)\n",
+ device,
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot allocate hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_any (globals.ring_stream, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot initialize hardware parameter structure (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_access (globals.ring_stream, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set access type (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_format (globals.ring_stream, hw_params, SND_PCM_FORMAT_S16_LE)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample format (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_rate_near (globals.ring_stream, hw_params, &sample_rate, 0)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set sample rate (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params_set_channels (globals.ring_stream, hw_params, 1)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set channel count (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if ((err = snd_pcm_hw_params (globals.ring_stream, hw_params)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot set parameters (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ if (hw_params) {
+ snd_pcm_hw_params_free (hw_params);
+ hw_params = NULL;
+ }
+
+ if ((err = snd_pcm_prepare (globals.ring_stream)) < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cannot prepare audio interface for use (%s)\n",
+ snd_strerror (err));
+ goto fail;
+ }
+
+ switch_mutex_unlock(globals.device_lock);
+ return SWITCH_STATUS_SUCCESS;
+
+ fail:
+ switch_mutex_unlock(globals.device_lock);
+
+
+ if (hw_params) {
+ snd_pcm_hw_params_free (hw_params);
+ hw_params = NULL;
+ }
+
+ if (globals.ring_stream) {
+ snd_pcm_close (globals.ring_stream);
+ }
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can't open audio device!\n");
+ switch_core_codec_destroy(&globals.read_codec);
+ switch_core_codec_destroy(&globals.write_codec);
+
+ return SWITCH_STATUS_FALSE;
+}
+
+static switch_status_t dtmf_call(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ char *dtmf = argv[0];
+
+ if (switch_strlen_zero(dtmf)) {
+ stream->write_function(stream, "No DTMF Supplied!\n");
+ } else {
+ switch_mutex_lock(globals.pvt_lock);
+ if (globals.call_list) {
+ switch_channel_t *channel = switch_core_session_get_channel(globals.call_list->session);
+ switch_channel_queue_dtmf(channel, dtmf);
+ }
+ switch_mutex_unlock(globals.pvt_lock);
+ }
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_call(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ private_t *tp, *tech_pvt = NULL;
+ char *callid = argv[0];
+ uint8_t one_call = 0;
+
+ switch_mutex_lock(globals.pvt_lock);
+ if (switch_strlen_zero(callid)) {
+ if (globals.call_list) {
+ if (globals.call_list->next) {
+ tech_pvt = globals.call_list->next;
+ } else {
+ tech_pvt = globals.call_list;
+ one_call = 1;
+ }
+ }
+ } else if (!strcasecmp(callid, "none")) {
+ for (tp = globals.call_list; tp; tp = tp->next) {
+ switch_clear_flag_locked(tp, TFLAG_MASTER);
+ }
+ stream->write_function(stream, "OK\n");
+ goto done;
+ } else {
+ tech_pvt = switch_core_hash_find(globals.call_hash, callid);
+ }
+
+ if (tech_pvt) {
+ if (tech_pvt == globals.call_list && !tech_pvt->next) {
+ one_call = 1;
+ }
+
+ if (!one_call) {
+ remove_pvt(tech_pvt);
+ }
+ add_pvt(tech_pvt, PA_MASTER);
+ stream->write_function(stream, "OK\n");
+ } else {
+ stream->write_function(stream, "NO SUCH CALL\n");
+ }
+
+ done:
+ switch_mutex_unlock(globals.pvt_lock);
+
+ return SWITCH_STATUS_SUCCESS;
+
+}
+
+static switch_status_t hangup_call(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ private_t *tech_pvt;
+ char *callid = argv[0];
+
+ switch_mutex_lock(globals.pvt_lock);
+ if (switch_strlen_zero(callid)) {
+ tech_pvt = globals.call_list;
+ } else {
+ tech_pvt = switch_core_hash_find(globals.call_hash, callid);
+ }
+
+ if (tech_pvt) {
+ switch_channel_hangup(switch_core_session_get_channel(tech_pvt->session), SWITCH_CAUSE_NORMAL_CLEARING);
+ //switch_set_flag_locked(tech_pvt, TFLAG_HUP);
+ stream->write_function(stream, "OK\n");
+ } else {
+ stream->write_function(stream, "NO SUCH CALL\n");
+ }
+ switch_mutex_unlock(globals.pvt_lock);
+
+ return SWITCH_STATUS_SUCCESS;
+
+}
+
+static switch_status_t answer_call(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ private_t *tp;
+ int x = 0;
+ char *callid = argv[0];
+
+ switch_mutex_lock(globals.pvt_lock);
+
+ if (!switch_strlen_zero(callid)) {
+ if ((tp = switch_core_hash_find(globals.call_hash, callid))) {
+ if (switch_test_flag(tp, TFLAG_ANSWER)) {
+ stream->write_function(stream, "CALL ALREADY ANSWERED\n");
+ } else {
+ switch_channel_t *channel = switch_core_session_get_channel(tp->session);
+ switch_set_flag_locked(tp, TFLAG_ANSWER);
+ switch_channel_answer(channel);
+ add_pvt(tp, PA_MASTER);
+ }
+ } else {
+ stream->write_function(stream, "NO SUCH CALL\n");
+ }
+
+ goto done;
+ }
+
+ for (tp = globals.call_list; tp; tp = tp->next) {
+ if (!switch_test_flag(tp, TFLAG_ANSWER)) {
+ switch_channel_t *channel = switch_core_session_get_channel(tp->session);
+ switch_set_flag_locked(tp, TFLAG_ANSWER);
+ switch_channel_answer(channel);
+ add_pvt(tp, PA_MASTER);
+ x++;
+ break;
+ }
+ }
+ done:
+ switch_mutex_unlock(globals.pvt_lock);
+
+ stream->write_function(stream, "Answered %d channels.\n", x);
+
+
+ return SWITCH_STATUS_SUCCESS;
+
+}
+
+static switch_status_t do_flags(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ char *action = argv[0];
+ char *flag_str = argv[1];
+ GFLAGS flags = GFLAG_NONE;
+ char *p;
+ int x = 0;
+
+ if (argc < 2) {
+ goto desc;
+ }
+
+ for (x = 1; x < argc; x++) {
+ flag_str = argv[x];
+ for (p = flag_str; *p; p++) {
+ *p = (char) tolower(*p);
+ }
+
+ if (strstr(flag_str, "ear")) {
+ flags |= GFLAG_EAR;
+ }
+ if (strstr(flag_str, "mouth")) {
+ flags |= GFLAG_MOUTH;
+ }
+ }
+
+ if (!strcasecmp(action, "on")) {
+ if (flags & GFLAG_EAR) {
+ switch_set_flag((&globals), GFLAG_EAR);
+ }
+ if (flags & GFLAG_MOUTH) {
+ switch_set_flag((&globals), GFLAG_MOUTH);
+ }
+ } else if (!strcasecmp(action, "off")) {
+ if (flags & GFLAG_EAR) {
+ switch_clear_flag((&globals), GFLAG_EAR);
+ }
+ if (flags & GFLAG_MOUTH) {
+ switch_clear_flag((&globals), GFLAG_MOUTH);
+ }
+ } else {
+ goto bad;
+ }
+
+ desc:
+ x = 0;
+ stream->write_function(stream, "FLAGS: ");
+ if (switch_test_flag((&globals), GFLAG_EAR)) {
+ stream->write_function(stream, "ear");
+ x++;
+ }
+ if (switch_test_flag((&globals), GFLAG_MOUTH)) {
+ stream->write_function(stream, "%smouth", x ? "|" : "");
+ x++;
+ }
+ if (!x) {
+ stream->write_function(stream, "none");
+ }
+
+ goto done;
+
+ bad:
+ stream->write_function(stream, "Usage: flags [on|off] <flags>\n");
+ done:
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t list_calls(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ private_t *tp;
+ int x = 0;
+ char *cid_name = "n/a";
+ char *cid_num = "n/a";
+
+ switch_mutex_lock(globals.pvt_lock);
+ for (tp = globals.call_list; tp; tp = tp->next) {
+ switch_channel_t *channel;
+ switch_caller_profile_t *profile;
+ x++;
+ channel = switch_core_session_get_channel(tp->session);
+
+ if ((profile = switch_channel_get_caller_profile(channel))) {
+ if (profile->originatee_caller_profile) {
+ cid_name = "Outbound Call";
+ cid_num = profile->originatee_caller_profile->destination_number;
+ } else {
+ cid_name = profile->caller_id_name;
+ cid_num = profile->caller_id_number;
+ }
+ }
+
+ stream->write_function(stream, "%s %s [%s (%s)] %s\n", tp->call_id, switch_channel_get_name(channel),
+ cid_name, cid_num, switch_test_flag(tp, TFLAG_MASTER) ? "active" : "hold");
+ }
+ switch_mutex_unlock(globals.pvt_lock);
+
+ stream->write_function(stream, "\n%d call%s\n", x, x == 1 ? "" : "s");
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t place_call(char **argv, int argc, switch_stream_handle_t *stream)
+{
+ switch_core_session_t *session;
+ switch_status_t status = SWITCH_STATUS_SUCCESS;
+ char *dest = NULL;
+
+ if (!argv[0]) {
+ stream->write_function(stream, "FAIL:Usage: call <dest>\n");
+ return SWITCH_STATUS_SUCCESS;
+ }
+ dest = argv[0];
+
+ if ((session = switch_core_session_request(&channel_endpoint_interface, NULL)) != 0) {
+ private_t *tech_pvt;
+ switch_channel_t *channel;
+ char *dialplan = globals.dialplan;
+ char *cid_name = globals.cid_name;
+ char *cid_num = globals.cid_num;
+
+ switch_core_session_add_stream(session, NULL);
+ if ((tech_pvt = (private_t *) switch_core_session_alloc(session, sizeof(private_t))) != 0) {
+ memset(tech_pvt, 0, sizeof(*tech_pvt));
+ switch_mutex_init(&tech_pvt->flag_mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(session));
+ channel = switch_core_session_get_channel(session);
+ switch_core_session_set_private(session, tech_pvt);
+ tech_pvt->session = session;
+ globals.flags = GFLAG_EAR | GFLAG_MOUTH;
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Hey where is my memory pool?\n");
+ switch_core_session_destroy(&session);
+ return SWITCH_STATUS_MEMERR;
+ }
+
+ if (!switch_strlen_zero(argv[1])) {
+ dialplan = argv[1];
+ }
+
+ if (!switch_strlen_zero(argv[2])) {
+ cid_num = argv[2];
+ }
+
+ if (!switch_strlen_zero(argv[3])) {
+ cid_name = argv[3];
+ }
+
+ if (!switch_strlen_zero(argv[4])) {
+ tech_pvt->sample_rate = atoi(argv[4]);
+ }
+
+ if (!switch_strlen_zero(argv[4])) {
+ tech_pvt->codec_ms = atoi(argv[5]);
+ }
+
+ if ((tech_pvt->caller_profile = switch_caller_profile_new(switch_core_session_get_pool(session),
+ NULL,
+ dialplan, cid_name, cid_num, NULL, NULL, NULL, NULL, (char *) modname, NULL,
+ dest)) != 0) {
+ char name[128];
+ snprintf(name, sizeof(name), "Alsa/%s",
+ tech_pvt->caller_profile->destination_number ? tech_pvt->caller_profile->destination_number : modname);
+ switch_channel_set_name(channel, name);
+
+ switch_channel_set_caller_profile(channel, tech_pvt->caller_profile);
+ }
+ tech_pvt->session = session;
+ if ((status = engage_device(tech_pvt->sample_rate, tech_pvt->codec_ms)) == SWITCH_STATUS_SUCCESS) {
+ switch_set_flag_locked(tech_pvt, TFLAG_ANSWER);
+ switch_channel_mark_answered(channel);
+ switch_channel_set_state(channel, CS_INIT);
+ switch_core_session_thread_launch(tech_pvt->session);
+ add_pvt(tech_pvt, PA_MASTER);
+ stream->write_function(stream, "SUCCESS:%s:%s\n", tech_pvt->call_id, switch_core_session_get_uuid(tech_pvt->session));
+ } else {
+ switch_core_session_destroy(&session);
+ stream->write_function(stream, "FAIL:Device Error!\n");
+ }
+ }
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t padep(char *cmd, switch_core_session_t *isession, switch_stream_handle_t *stream)
+{
+ stream->write_function(stream, "This command no longer exists (try 'pa help')\n");
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t pa_cmd(char *cmd, switch_core_session_t *isession, switch_stream_handle_t *stream)
+{
+ char *argv[1024] = { 0 };
+ int argc = 0;
+ char *mycmd = NULL, *devname = NULL;
+ switch_status_t status = SWITCH_STATUS_SUCCESS;
+ pa_command_t func = NULL;
+ int lead = 1, devval = 0;
+ const char *usage_string = "USAGE:\n"
+ "--------------------------------------------------------------------------------\n"
+ "pa help\n"
+ "pa dump\n"
+ "pa call <dest> [<dialplan> <cid_name> <cid_num> <rate>]\n"
+ "pa answer [<call_id>]\n"
+ "pa hangup [<call_id>]\n"
+ "pa list\n"
+ "pa switch [<call_id>|none]\n"
+ "pa dtmf <digit string>\n"
+ "pa flags [on|off] [ear] [mouth]\n"
+ "--------------------------------------------------------------------------------\n";
+
+ if (switch_strlen_zero(cmd)) {
+ stream->write_function(stream, "%s", usage_string);
+ goto done;
+ }
+
+ if (!(mycmd = strdup(cmd))) {
+ status = SWITCH_STATUS_MEMERR;
+ goto done;
+ }
+
+ if (!(argc = switch_separate_string(mycmd, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
+ stream->write_function(stream, "%s", usage_string);
+ goto done;
+ }
+
+ if (!strcasecmp(argv[0], "call")) {
+ func = place_call;
+ } else if (!strcasecmp(argv[0], "help")) {
+ stream->write_function(stream, "%s", usage_string);
+ goto done;
+ } else if (!strcasecmp(argv[0], "list")) {
+ func = list_calls;
+ } else if (!strcasecmp(argv[0], "flags")) {
+ func = do_flags;
+ } else if (!strcasecmp(argv[0], "hangup")) {
+ func = hangup_call;
+ } else if (!strcasecmp(argv[0], "answer")) {
+ func = answer_call;
+ } else if (!strcasecmp(argv[0], "switch")) {
+ func = switch_call;
+ } else if (!strcasecmp(argv[0], "dtmf")) {
+ func = dtmf_call;
+ }
+
+ if (func) {
+ status = func(&argv[lead], argc - lead, stream);
+ } else {
+ if (devname) {
+ if (devval > 0) {
+ stream->write_function(stream, "%s set to %d\n", devname, devval);
+ } else {
+ stream->write_function(stream, "%s not set (invalid value)\n", devname);
+ }
+ } else {
+ stream->write_function(stream, "Unknown Command [%s]\n", argv[0]);
+ }
+ }
+
+ done:
+
+ switch_safe_free(mycmd);
+
+ return status;
+}
+
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
+ */
projects / thirdparty / freeswitch.git / commitdiff
