Sample code of an eCall test session with a local voice prompt

/**
* This module implements the le_ecall's test with a local voice prompt.
*
* You must issue the following commands:
* @verbatim
$ app start eCallWPrompt
$ app runProc eCallWPrompt --exe=eCallWPrompt -- <PSAP number>
@endverbatim
* Copyright (C) Sierra Wireless Inc.
*
*/
 
#include "legato.h"
#include "interfaces.h"
 
static const char * PsapNumber = NULL;
static le_ecall_CallRef_t LastTestECallRef = NULL;
static le_audio_StreamRef_t FeOutRef = NULL;
static le_audio_StreamRef_t FileAudioRef = NULL;
static le_audio_ConnectorRef_t AudioOutputConnectorRef = NULL;
static le_audio_MediaHandlerRef_t MediaHandlerRef = NULL;
static const char AudioFilePath[] = "/male.wav";
static int AudioFileFd = -1;
 
//--------------------------------------------------------------------------------------------------
/**
* Function to disconnect audio streams.
*
*/
//--------------------------------------------------------------------------------------------------
static void DisconnectAudio
(
void
)
{
if(AudioOutputConnectorRef)
{
if(FileAudioRef)
{
LE_INFO("Disconnect %p from connector.%p", FileAudioRef, AudioOutputConnectorRef);
le_audio_Disconnect(AudioOutputConnectorRef, FileAudioRef);
}
if(FeOutRef)
{
LE_INFO("Disconnect %p from connector.%p", FeOutRef, AudioOutputConnectorRef);
le_audio_Disconnect(AudioOutputConnectorRef, FeOutRef);
}
}
 
if(AudioOutputConnectorRef)
{
le_audio_DeleteConnector(AudioOutputConnectorRef);
AudioOutputConnectorRef = NULL;
}
 
if(FileAudioRef)
{
le_audio_Close(FileAudioRef);
FileAudioRef = NULL;
}
 
if(FeOutRef)
{
le_audio_Close(FeOutRef);
FeOutRef = NULL;
}
 
// Closing AudioFileFd is unnecessary since the messaging infrastructure underneath
// le_audio_xxx APIs that use it would close it.
}
 
 
//--------------------------------------------------------------------------------------------------
/**
* Handler function for Audio Stream Event Notifications.
*
*/
//--------------------------------------------------------------------------------------------------
static void MyMediaEventHandler
(
void* contextPtr
)
{
switch(event)
{
LE_INFO("File event is LE_AUDIO_MEDIA_ENDED.");
 
if (le_audio_PlayFile(FileAudioRef, LE_AUDIO_NO_FD) != LE_OK)
{
LE_ERROR("Failed to play the file");
return;
}
else
{
LE_INFO("file is now playing.");
}
break;
 
LE_INFO("File event is LE_AUDIO_MEDIA_ERROR.");
break;
 
LE_INFO("File event is LE_AUDIO_MEDIA_NO_MORE_SAMPLES.");
break;
default:
LE_INFO("File event is %d", event);
break;
}
}
 
 
//--------------------------------------------------------------------------------------------------
/**
* Function to connect audio streams.
*
*/
//--------------------------------------------------------------------------------------------------
static void ConnectAudio
(
void
)
{
// Open and connect an output stream.
// Redirect audio to the in-built Speaker.
FeOutRef = le_audio_OpenSpeaker();
if (FeOutRef == NULL)
{
LE_ERROR("OpenSpeaker returns NULL!");
LE_INFO("Switching to I2S interface...");
// Redirect audio to the I2S interface.
if (FeOutRef==NULL)
{
LE_ERROR("OpenI2sTx returns NULL!");
}
else
{
LE_INFO("Open I2S: FeOutRef.%p", FeOutRef);
}
}
else
{
LE_INFO("Open Speaker: FeOutRef.%p", FeOutRef);
}
 
AudioOutputConnectorRef = le_audio_CreateConnector();
LE_ERROR_IF((AudioOutputConnectorRef==NULL), "AudioOutputConnectorRef is NULL!");
{
LE_ERROR_IF((le_audio_Connect(AudioOutputConnectorRef, FeOutRef) != LE_OK),
"Failed to connect I2S TX on Output connector!");
}
 
FileAudioRef = le_audio_OpenPlayer();
LE_ERROR_IF((FileAudioRef==NULL), "OpenFilePlayback returns NULL!");
 
MediaHandlerRef = le_audio_AddMediaHandler(FileAudioRef,
MyMediaEventHandler,
NULL);
 
if(le_audio_Connect(AudioOutputConnectorRef, FileAudioRef) != LE_OK)
{
LE_ERROR("Failed to connect FilePlayback on output connector!");
return;
}
 
if ((AudioFileFd=open(AudioFilePath, O_RDONLY)) == -1)
{
LE_ERROR("Open file %s failure: errno.%d (%s)", AudioFilePath, errno, strerror(errno));
DisconnectAudio();
exit(0);
}
else
{
LE_INFO("Open file %s with AudioFileFd.%d", AudioFilePath, AudioFileFd);
}
 
if (le_audio_PlayFile(FileAudioRef, AudioFileFd) != LE_OK)
{
LE_ERROR("Failed to play the file");
return;
}
}
 
//--------------------------------------------------------------------------------------------------
/**
* Handler function for eCall state Notifications.
*
*/
//--------------------------------------------------------------------------------------------------
static void MyECallEventHandler
(
void* contextPtr
)
{
LE_INFO("eCall TEST: New eCall state: %d for eCall ref.%p", state, eCallRef);
 
switch(state)
{
{
LE_INFO("eCall state is LE_ECALL_STATE_STARTED.");
break;
}
{
LE_INFO("Mute audio interface and voice prompt.");
le_audio_Mute(FeOutRef);
le_audio_Mute(FileAudioRef);
LE_INFO("eCall state is LE_ECALL_STATE_CONNECTED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_DISCONNECTED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_WAITING_PSAP_START_IND.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_PSAP_START_IND_RECEIVED.");
if (le_ecall_SendMsd(eCallRef) != LE_OK)
{
LE_ERROR("Could not send the MSD");
}
 
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_MSD_TX_STARTED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_LLNACK_RECEIVED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_LLACK_RECEIVED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_MSD_TX_COMPLETED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_MSD_TX_FAILED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_ALACK_RECEIVED_POSITIVE.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_ALACK_RECEIVED_CLEAR_DOWN.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_STOPPED.");
LE_INFO("Unmute audio interface and voice prompt.");
le_audio_Unmute(FeOutRef);
le_audio_Unmute(FileAudioRef);
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_RESET.");
LE_INFO("Unmute audio interface and voice prompt.");
le_audio_Unmute(FeOutRef);
le_audio_Unmute(FileAudioRef);
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_COMPLETED.");
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_FAILED.");
LE_INFO("Unmute audio interface and voice prompt.");
le_audio_Unmute(FeOutRef);
le_audio_Unmute(FileAudioRef);
break;
}
{
LE_INFO("eCall state is LE_ECALL_STATE_END_OF_REDIAL_PERIOD.");
break;
}
default:
{
LE_INFO("Unknown eCall state.");
break;
}
}
}
 
//--------------------------------------------------------------------------------------------------
/**
* Create and start a test eCall.
*
*/
//--------------------------------------------------------------------------------------------------
static void StartTestECall
(
void
)
{
le_ecall_StateChangeHandlerRef_t stateChangeHandlerRef = 0x00;
 
LE_INFO("Start StartTestECall");
 
LE_ASSERT((stateChangeHandlerRef = le_ecall_AddStateChangeHandler(MyECallEventHandler, NULL)) != NULL);
 
LE_ASSERT(le_ecall_SetPsapNumber(PsapNumber) == LE_OK);
 
 
LE_ASSERT((LastTestECallRef=le_ecall_Create()) != NULL);
 
LE_ASSERT(le_ecall_SetMsdPosition(LastTestECallRef, true, +48898064, +2218092, 0) == LE_OK);
 
LE_ASSERT(le_ecall_SetMsdPositionN1(LastTestECallRef, 0, 11) == LE_OK);
 
LE_ASSERT(le_ecall_SetMsdPositionN2(LastTestECallRef, -22, -33) == LE_OK);
 
LE_ASSERT(le_ecall_SetMsdPassengersCount(LastTestECallRef, 3) == LE_OK);
 
ConnectAudio();
 
LE_ASSERT(le_ecall_StartTest(LastTestECallRef) == LE_OK);
 
state=le_ecall_GetState(LastTestECallRef);
}
 
//--------------------------------------------------------------------------------------------------
/**
* The signal event handler function for SIGINT/SIGTERM when process dies.
*/
//--------------------------------------------------------------------------------------------------
static void SigHandler
(
int sigNum
)
{
LE_INFO("End and delete last test eCall");
le_ecall_End(LastTestECallRef);
le_ecall_Delete(LastTestECallRef);
DisconnectAudio();
exit(EXIT_SUCCESS);
}
 
//--------------------------------------------------------------------------------------------------
/**
* Helper.
*
*/
//--------------------------------------------------------------------------------------------------
static void PrintUsage()
{
int idx;
bool sandboxed = (getuid() != 0);
const char * usagePtr[] = {
"Usage of the eCallWPrompt is:",
" eCallWPrompt <PSAP number>",
};
 
for(idx = 0; idx < NUM_ARRAY_MEMBERS(usagePtr); idx++)
{
if(sandboxed)
{
LE_INFO("%s", usagePtr[idx]);
}
else
{
fprintf(stderr, "%s\n", usagePtr[idx]);
}
}
}
 
//--------------------------------------------------------------------------------------------------
/**
* App init.
*
*/
//--------------------------------------------------------------------------------------------------
{
if (le_arg_NumArgs() == 1)
{
// Register a signal event handler for SIGINT when user interrupts/terminates process
signal(SIGINT, SigHandler);
 
PsapNumber = le_arg_GetArg(0);
LE_INFO("======== Start eCallWPrompt Test with PSAP.%s========",
PsapNumber);
 
StartTestECall();
LE_INFO("======== eCallWPrompt Test SUCCESS ========");
}
else
{
PrintUsage();
LE_INFO("EXIT eCallWPrompt");
exit(EXIT_FAILURE);
}
}