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toxic/src/audio_call.c

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/* audio_call.c
*
*
* Copyright (C) 2014 Toxic All Rights Reserved.
*
* This file is part of Toxic.
*
* Toxic 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 3 of the License, or
* (at your option) any later version.
*
* Toxic 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.
*
* You should have received a copy of the GNU General Public License
* along with Toxic. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "toxic.h"
#include "windows.h"
#include "audio_call.h"
#include "audio_device.h"
#include "chat_commands.h"
#include "global_commands.h"
#include "line_info.h"
#include "notify.h"
#include "friendlist.h"
#include "chat.h"
#ifdef VIDEO
#include "video_call.h"
#endif /* VIDEO */
#include <stdbool.h>
#include <curses.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#ifdef __APPLE__
#include <OpenAL/al.h>
#include <OpenAL/alc.h>
#else
#include <AL/al.h>
#include <AL/alc.h>
/* compatibility with older versions of OpenAL */
#ifndef ALC_ALL_DEVICES_SPECIFIER
#include <AL/alext.h>
#endif
#endif
extern FriendsList Friends;
#define cbend pthread_exit(NULL)
#define frame_size (CallControl.audio_sample_rate * CallControl.audio_frame_duration / 1000)
static int set_call(Call *call, bool start)
{
call->in_idx = -1;
call->out_idx = -1;
#ifdef VIDEO
call->vin_idx = -1;
call->vout_idx = -1;
#endif /* VIDEO */
if ( start ) {
call->ttas = true;
if ( pthread_mutex_init(&call->mutex, NULL) != 0 )
return -1;
} else {
call->ttid = 0;
if ( pthread_mutex_destroy(&call->mutex) != 0 )
return -1;
}
return 0;
}
void call_cb ( ToxAV *av, uint32_t friend_number, bool audio_enabled, bool video_enabled,
void *user_data );
void callstate_cb ( ToxAV *av, uint32_t friend_number, uint32_t state, void *user_data );
void receive_audio_frame_cb ( ToxAV *av, uint32_t friend_number, int16_t const *pcm, size_t sample_count,
uint8_t channels, uint32_t sampling_rate, void *user_data );
void receive_video_frame_cb ( ToxAV *av, uint32_t friend_number,
uint16_t width, uint16_t height,
uint8_t const *y, uint8_t const *u, uint8_t const *v, uint8_t const *a,
int32_t ystride, int32_t ustride, int32_t vstride, int32_t astride, void *user_data );
void callback_recv_invite ( Tox *m, uint32_t friend_number );
void callback_recv_ringing ( uint32_t friend_number );
void callback_recv_starting ( uint32_t friend_number );
void callback_recv_ending ( uint32_t friend_number );
void callback_call_started ( uint32_t friend_number );
void callback_call_canceled ( uint32_t friend_number );
void callback_call_rejected ( uint32_t friend_number );
void callback_call_ended ( uint32_t friend_number );
void write_device_callback( uint32_t friend_number, const int16_t *PCM, uint16_t sample_count, uint8_t channels,
uint32_t sample_rate );
static void print_err (ToxWindow *self, const char *error_str)
{
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "%s", error_str);
}
ToxAV *init_audio(ToxWindow *self, Tox *tox)
{
TOXAV_ERR_NEW error;
CallControl.audio_errors = ae_None;
CallControl.prompt = self;
CallControl.pending_call = false;
CallControl.av = toxav_new(tox, &error);
CallControl.audio_enabled = true;
CallControl.audio_bit_rate = 64;
CallControl.audio_sample_rate = 48000;
CallControl.audio_frame_duration = 20;
CallControl.audio_channels = 1;
#ifndef VIDEO
CallControl.video_enabled = false;
CallControl.video_bit_rate = 0;
CallControl.video_frame_duration = 0;
#endif /* VIDEO */
memset(CallControl.calls, 0, sizeof(CallControl.calls));
if ( !CallControl.av ) {
CallControl.audio_errors |= ae_StartingCoreAudio;
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to init ToxAV");
return NULL;
}
if ( init_devices(CallControl.av) == de_InternalError ) {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to init devices");
toxav_kill(CallControl.av);
return CallControl.av = NULL;
}
toxav_callback_call(CallControl.av, call_cb, tox);
toxav_callback_call_state(CallControl.av, callstate_cb, NULL);
toxav_callback_audio_receive_frame(CallControl.av, receive_audio_frame_cb, NULL);
return CallControl.av;
}
void terminate_audio()
{
int i;
for (i = 0; i < MAX_CALLS; ++i)
stop_transmission(&CallControl.calls[i], i);
if ( CallControl.av )
toxav_kill(CallControl.av);
terminate_devices();
}
void read_device_callback(const int16_t *captured, uint32_t size, void *data)
{
TOXAV_ERR_SEND_FRAME error;
uint32_t friend_number = *((uint32_t *)data); /* TODO: Or pass an array of call_idx's */
int64_t sample_count = ((int64_t) CallControl.audio_sample_rate) * \
((int64_t) CallControl.audio_frame_duration) / 1000;
if ( sample_count <= 0 || toxav_audio_send_frame(CallControl.av, friend_number,
captured, sample_count,
CallControl.audio_channels,
CallControl.audio_sample_rate, &error) == false ) {
}
}
void write_device_callback(uint32_t friend_number, const int16_t *PCM, uint16_t sample_count, uint8_t channels,
uint32_t sample_rate)
{
if ( CallControl.calls[friend_number].ttas )
write_out(CallControl.calls[friend_number].out_idx, PCM, sample_count, channels, sample_rate);
}
int start_transmission(ToxWindow *self, Call *call)
{
if ( !self || !CallControl.av ) {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to prepare transmission");
return -1;
}
if (set_call(call, true) == -1)
return -1;
DeviceError error = open_primary_device(input, &call->in_idx,
CallControl.audio_sample_rate, CallControl.audio_frame_duration, CallControl.audio_channels);
if ( error != de_None ) {
if ( error == de_FailedStart)
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to start input device");
if ( error == de_InternalError )
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Internal error with opening input device");
}
if ( register_device_callback(self->num, call->in_idx,
read_device_callback, &self->num, true) != de_None)
/* Set VAD as true for all; TODO: Make it more dynamic */
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to register input handler!");
if ( open_primary_device(output, &call->out_idx,
CallControl.audio_sample_rate, CallControl.audio_frame_duration, CallControl.audio_channels) != de_None ) {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to open output device!");
call->has_output = 0;
}
return 0;
}
int stop_transmission(Call *call, uint32_t friend_number)
{
if ( call->ttas ) {
TOXAV_ERR_CALL_CONTROL error = TOXAV_ERR_CALL_CONTROL_OK;
if ( CallControl.call_state > TOXAV_FRIEND_CALL_STATE_FINISHED )
toxav_call_control(CallControl.av, friend_number, TOXAV_CALL_CONTROL_CANCEL, &error);
if ( error == TOXAV_ERR_CALL_CONTROL_OK ) {
call->ttas = false;
if ( call->in_idx != -1 )
close_device(input, call->in_idx);
if ( call->out_idx != -1 )
close_device(output, call->out_idx);
if ( set_call(call, false) == -1 )
return -1;
return 0;
} else {
return -1;
}
}
return -1;
}
/*
* End of transmission
*/
/*
* Callbacks
*/
void call_cb(ToxAV *av, uint32_t friend_number, bool audio_enabled, bool video_enabled, void *user_data)
{
Tox *m = (Tox *) user_data;
CallControl.pending_call = true;
callback_recv_invite(m, friend_number);
}
void callstate_cb(ToxAV *av, uint32_t friend_number, uint32_t state, void *user_data)
{
CallControl.call_state = state;
switch ( state ) {
case ( TOXAV_FRIEND_CALL_STATE_ERROR ):
line_info_add(CallControl.prompt, NULL, NULL, NULL, SYS_MSG, 0, 0, "ToxAV callstate error!");
#ifdef VIDEO
callback_video_end(friend_number);
#endif /* VIDEO */
stop_transmission(&CallControl.calls[friend_number], friend_number);
callback_call_ended(friend_number);
CallControl.pending_call = false;
break;
case ( TOXAV_FRIEND_CALL_STATE_FINISHED ):
if ( CallControl.pending_call )
callback_call_rejected(friend_number);
else
callback_call_ended(friend_number);
#ifdef VIDEO
callback_recv_video_end(friend_number);
callback_video_end(friend_number);
#endif /* VIDEO */
stop_transmission(&CallControl.calls[friend_number], friend_number);
/* Reset stored call state after finishing */
CallControl.call_state = 0;
CallControl.pending_call = false;
break;
default:
if ( CallControl.pending_call ) {
/* Start answered call */
callback_call_started(friend_number);
CallControl.pending_call = false;
} else {
#ifdef VIDEO
/* Handle receiving client video call states */
if ( state & TOXAV_FRIEND_CALL_STATE_SENDING_V )
callback_recv_video_starting(friend_number);
else if ( state & ~TOXAV_FRIEND_CALL_STATE_SENDING_V )
callback_recv_video_end(friend_number);
#endif /* VIDEO */
}
break;
}
}
void receive_audio_frame_cb(ToxAV *av, uint32_t friend_number,
int16_t const *pcm, size_t sample_count,
uint8_t channels, uint32_t sampling_rate, void *user_data)
{
write_device_callback(friend_number, pcm, sample_count, channels, sampling_rate);
}
void audio_bit_rate_status_cb(ToxAV *av, uint32_t friend_number, uint32_t audio_bit_rate,
uint32_t video_bit_rate, void *user_data)
{
CallControl.audio_bit_rate = audio_bit_rate;
}
void callback_recv_invite(Tox *m, uint32_t friend_number)
{
if (friend_number >= Friends.max_idx)
return;
if (Friends.list[friend_number].chatwin == -1) {
if (get_num_active_windows() >= MAX_WINDOWS_NUM)
return;
Friends.list[friend_number].chatwin = add_window(m, new_chat(m, Friends.list[friend_number].num));
}
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onInvite != NULL && windows[i].num == friend_number) {
windows[i].onInvite(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
void callback_recv_ringing(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onRinging != NULL && windows[i].num == friend_number) {
windows[i].onRinging(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
void callback_recv_starting(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if ( windows[i].onStarting != NULL && windows[i].num == friend_number ) {
windows[i].onStarting(&windows[i], CallControl.av, friend_number, CallControl.call_state);
if ( 0 != start_transmission(&windows[i], &CallControl.calls[friend_number]) ) /* YEAH! */
line_info_add(&windows[i], NULL, NULL, NULL, SYS_MSG, 0, 0 , "Error starting transmission!");
return;
}
}
}
void callback_recv_ending(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onEnding != NULL && windows[i].num == friend_number) {
windows[i].onEnding(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
void callback_call_started(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i)
if ( windows[i].onStart != NULL && windows[i].num == friend_number ) {
windows[i].onStart(&windows[i], CallControl.av, friend_number, CallControl.call_state);
if ( 0 != start_transmission(&windows[i], &CallControl.calls[friend_number]) ) {/* YEAH! */
line_info_add(&windows[i], NULL, NULL, NULL, SYS_MSG, 0, 0, "Error starting transmission!");
return;
}
}
}
void callback_call_canceled(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onCancel != NULL && windows[i].num == friend_number) {
windows[i].onCancel(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
void callback_call_rejected(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onReject != NULL && windows[i].num == friend_number) {
windows[i].onReject(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
void callback_call_ended(uint32_t friend_number)
{
ToxWindow *windows = CallControl.prompt;
int i;
for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
if (windows[i].onEnd != NULL && windows[i].num == friend_number) {
windows[i].onEnd(&windows[i], CallControl.av, friend_number, CallControl.call_state);
}
}
}
/*
* End of Callbacks
*/
/*
* Commands from chat_commands.h
*/
void cmd_call(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
TOXAV_ERR_CALL error;
const char *error_str;
if ( argc != 0 ) {
error_str = "Unknown arguments.";
goto on_error;
}
if ( !CallControl.av ) {
error_str = "ToxAV not supported!";
goto on_error;
}
if ( !self->stb->connection ) {
error_str = "Friend is offline.";
goto on_error;
}
if ( CallControl.pending_call ) {
error_str = "Already a pending call!";
goto on_error;
}
toxav_call(CallControl.av, self->num, CallControl.audio_bit_rate, CallControl.video_bit_rate, &error);
if ( error != TOXAV_ERR_CALL_OK ) {
if ( error == TOXAV_ERR_CALL_FRIEND_ALREADY_IN_CALL ) error_str = "Already in a call!";
else if ( error == TOXAV_ERR_CALL_MALLOC ) error_str = "Memory allocation issue";
else if ( error == TOXAV_ERR_CALL_FRIEND_NOT_FOUND ) error_str = "Friend number invalid";
else if ( error == TOXAV_ERR_CALL_FRIEND_NOT_CONNECTED ) error_str = "Friend is valid but not currently connected";
else error_str = "Internal error!";
goto on_error;
}
CallControl.pending_call = true;
callback_recv_ringing(self->num);
return;
on_error:
print_err(self, error_str);
}
void cmd_answer(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
TOXAV_ERR_ANSWER error;
const char *error_str;
if ( argc != 0 ) {
error_str = "Unknown arguments.";
goto on_error;
}
if ( !CallControl.av ) {
error_str = "Audio not supported!";
goto on_error;
}
if ( !CallControl.pending_call ) {
error_str = "No incoming call!";
goto on_error;
}
toxav_answer(CallControl.av, self->num, CallControl.audio_bit_rate, CallControl.video_bit_rate, &error);
if ( error != TOXAV_ERR_ANSWER_OK ) {
if ( error == TOXAV_ERR_ANSWER_FRIEND_NOT_CALLING ) error_str = "No incoming call!";
else if ( error == TOXAV_ERR_ANSWER_CODEC_INITIALIZATION ) error_str = "Failed to initialize codecs!";
else if ( error == TOXAV_ERR_ANSWER_FRIEND_NOT_FOUND ) error_str = "Friend not found!";
else if ( error == TOXAV_ERR_ANSWER_INVALID_BIT_RATE ) error_str = "Invalid bit rate!";
else error_str = "Internal error!";
goto on_error;
}
/* Callback will print status... */
callback_recv_starting(self->num);
CallControl.pending_call = false;
return;
on_error:
print_err (self, error_str);
}
void cmd_reject(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 0 ) {
error_str = "Unknown arguments.";
goto on_error;
}
if ( !CallControl.av ) {
error_str = "Audio not supported!";
goto on_error;
}
if ( !CallControl.pending_call ) {
error_str = "No incoming call!";
goto on_error;
}
/* Manually send a cancel call control because call hasn't started */
toxav_call_control(CallControl.av, self->num, TOXAV_CALL_CONTROL_CANCEL, NULL);
CallControl.pending_call = false;
/* Callback will print status... */
callback_call_rejected(self->num);
return;
on_error:
print_err (self, error_str);
}
void cmd_hangup(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str = NULL;
if ( !CallControl.av ) {
error_str = "Audio not supported!";
goto on_error;
}
if ( argc != 0 ) {
error_str = "Unknown arguments.";
goto on_error;
}
if ( !self->is_call && !CallControl.pending_call ) {
error_str = "Not in a call.";
goto on_error;
}
#ifdef VIDEO
callback_video_end(self->num);
#endif /* VIDEO */
stop_current_call(self);
return;
on_error:
print_err (self, error_str);
}
void cmd_list_devices(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 1 ) {
if ( argc < 1 ) error_str = "Type must be specified!";
else error_str = "Only one argument allowed!";
goto on_error;
}
DeviceType type;
if ( strcasecmp(argv[1], "in") == 0 ) /* Input devices */
type = input;
else if ( strcasecmp(argv[1], "out") == 0 ) /* Output devices */
type = output;
else {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Invalid type: %s", argv[1]);
return;
}
print_devices(self, type);
return;
on_error:
print_err (self, error_str);
}
/* This changes primary device only */
void cmd_change_device(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 2 ) {
if ( argc < 1 ) error_str = "Type must be specified!";
else if ( argc < 2 ) error_str = "Must have id!";
else error_str = "Only two arguments allowed!";
goto on_error;
}
DeviceType type;
if ( strcmp(argv[1], "in") == 0 ) /* Input devices */
type = input;
else if ( strcmp(argv[1], "out") == 0 ) /* Output devices */
type = output;
else {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Invalid type: %s", argv[1]);
return;
}
char *end;
long int selection = strtol(argv[2], &end, 10);
if ( *end ) {
error_str = "Invalid input";
goto on_error;
}
if ( set_primary_device(type, selection) == de_InvalidSelection ) {
error_str = "Invalid selection!";
goto on_error;
}
return;
on_error:
print_err (self, error_str);
}
void cmd_ccur_device(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 2 ) {
if ( argc < 1 ) error_str = "Type must be specified!";
else if ( argc < 2 ) error_str = "Must have id!";
else error_str = "Only two arguments allowed!";
goto on_error;
}
DeviceType type;
if ( strcmp(argv[1], "in") == 0 ) /* Input devices */
type = input;
else if ( strcmp(argv[1], "out") == 0 ) /* Output devices */
type = output;
else {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Invalid type: %s", argv[1]);
return;
}
char *end;
long int selection = strtol(argv[2], &end, 10);
if ( *end ) {
error_str = "Invalid input";
goto on_error;
}
if ( selection_valid(type, selection) == de_InvalidSelection ) {
error_str = "Invalid selection!";
goto on_error;
}
/* If call is active, change device */
if ( self->is_call ) {
Call *this_call = &CallControl.calls[self->num];
if ( this_call->ttas ) {
if ( type == output ) {
pthread_mutex_lock(&this_call->mutex);
close_device(output, this_call->out_idx);
this_call->has_output = open_device(output, selection, &this_call->out_idx,
CallControl.audio_sample_rate, CallControl.audio_frame_duration, CallControl.audio_channels)
== de_None ? 1 : 0;
pthread_mutex_unlock(&this_call->mutex);
} else {
/* TODO: check for failure */
close_device(input, this_call->in_idx);
open_device(input, selection, &this_call->in_idx, CallControl.audio_sample_rate,
CallControl.audio_frame_duration, CallControl.audio_channels);
/* Set VAD as true for all; TODO: Make it more dynamic */
register_device_callback(self->num, this_call->in_idx, read_device_callback, &self->num, true);
}
}
}
self->device_selection[type] = selection;
return;
on_error:
print_err (self, error_str);
}
void cmd_mute(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 1 ) {
if ( argc < 1 ) error_str = "Type must be specified!";
else error_str = "Only two arguments allowed!";
goto on_error;
}
DeviceType type;
if ( strcasecmp(argv[1], "in") == 0 ) /* Input devices */
type = input;
else if ( strcasecmp(argv[1], "out") == 0 ) /* Output devices */
type = output;
else {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Invalid type: %s", argv[1]);
return;
}
/* If call is active, use this_call values */
if ( self->is_call ) {
Call *this_call = &CallControl.calls[self->num];
pthread_mutex_lock(&this_call->mutex);
if ( type == input ) {
device_mute(type, this_call->in_idx);
self->chatwin->infobox.in_is_muted ^= 1;
} else {
device_mute(type, this_call->out_idx);
self->chatwin->infobox.out_is_muted ^= 1;
}
pthread_mutex_unlock(&this_call->mutex);
}
return;
on_error:
print_err (self, error_str);
}
void cmd_sense(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
const char *error_str;
if ( argc != 1 ) {
if ( argc < 1 ) error_str = "Must have value!";
else error_str = "Only two arguments allowed!";
goto on_error;
}
char *end;
float value = strtof(argv[1], &end);
if ( *end ) {
error_str = "Invalid input";
goto on_error;
}
/* Call must be active */
if ( self->is_call ) {
device_set_VAD_treshold(CallControl.calls[self->num].in_idx, value);
self->chatwin->infobox.vad_lvl = value;
}
return;
on_error:
print_err (self, error_str);
}
void stop_current_call(ToxWindow *self)
{
if ( CallControl.pending_call ) {
toxav_call_control(CallControl.av, self->num, TOXAV_CALL_CONTROL_CANCEL, NULL);
callback_call_canceled(self->num);
} else {
stop_transmission(&CallControl.calls[self->num], self->num);
callback_call_ended(self->num);
}
CallControl.pending_call = false;
}
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