ppcsound.cpp

ppciaxclient softphone

// PpcSound.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "PpcSound.h"
#include "WaveThread.h"
#include <commctrl.h>
#include <aygshell.h>
#include <sipapi.h>

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE			g_hInst;				// The current instance
HWND				g_hwndCB;					// The command bar handle

static SHACTIVATEINFO s_sai;

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass	(HINSTANCE, LPTSTR);
BOOL				InitInstance	(HINSTANCE, int);
LRESULT CALLBACK	WndProc			(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About			(HWND, UINT, WPARAM, LPARAM);
HWND				CreateRpCommandBar(HWND);


CWaveInThread  waveIn;
CWaveOutThread waveOut;

// Used to reset the data buffer on BUFFER_FULL events
void CALLBACK waveInEventCB(WAVE_IN_EVENT waveInEvent)
{
   switch (waveInEvent)
   {
      case WAVE_IN_EVENT_BUFFER_FULL:
         waveIn.ResetBuffer();
         break;
      case WAVE_IN_EVENT_NONE:
      case WAVE_IN_EVENT_NEW_BUFFER:
      default:
         break;
   }
}


// Used to reset the data buffer on BUFFER_EMPTY events
void CALLBACK waveOutEventCB(WAVE_OUT_EVENT waveOutEvent)
{
   switch (waveOutEvent)
   {
      case WAVE_OUT_EVENT_BUFFER_EMPTY:
         waveOut.ResetBuffer();
         break;
      case WAVE_OUT_EVENT_NONE:
      case WAVE_OUT_EVENT_BUFFER_PLAYED:
      default:
         break;
   }
}


int WINAPI WinMain(	HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPTSTR    lpCmdLine,
					int       nCmdShow)
{
	MSG            msg;
	HACCEL         hAccelTable;
   unsigned char  buf1[2*161]; // 20ms 8000Hz, Mono, 16bit
   unsigned char  buf2[2*882]; // 20ms 44100Hz, Mono, 16bit
   int            i;
   double         fTabIndex;
   int            iTabIndex;
   double         fTabAdd;
   short*         pSoundData;
   short          sLastVal = 0;

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_PPCSOUND);

   // Works with buffer sizes for 20ms sound of more (iPaq3850/PPC2002; seems like a timeslice of 10ms is used
   //  in the sound driver)
   waveIn.Init(waveInEventCB,
               THREAD_PRIORITY_TIME_CRITICAL, 
               64, 
               2*160,
               1,
               8000,
               16);

   waveOut.Init(waveOutEventCB,
                THREAD_PRIORITY_TIME_CRITICAL, 
                64, 
                2*882,
                1,
                44100,
                16);

   waveIn.StartThread();
   waveOut.StartThread();

	// Main message loop:
	while (1) 
	{
      if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
      {
         if (msg.message == WM_QUIT)
         {
            break;
         }
         else
         {
		      if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
		      {
			      TranslateMessage(&msg);
			      DispatchMessage(&msg);
		      }
         }
      }

      // Try to get captured data
      if (waveIn.ReadData(buf1+2, 2*160))
      {
         ((short*)buf1)[0] = sLastVal;

         // Convertion from 8000Hz, Mono, 16bit => 44100Hz, Mono, 16bit
         //  Because the ACM isn't supported!
         pSoundData = (short*)buf2;

         fTabIndex = 0.0f;

         fTabAdd = 8000.0 / 44100.0;

         // Go through the whole 30ms buffer
         for (i=0 ; i<2*441 ; i++)
         {
            fTabIndex += fTabAdd;

            iTabIndex = (int)fTabIndex;

            *(pSoundData++) = (short)(((short*)buf1)[iTabIndex] 
                                      + (fTabIndex - iTabIndex) 
                                      * (((short*)buf1)[iTabIndex+1] - ((short*)buf1)[iTabIndex]));
         }

         sLastVal = ((short*)buf1)[160];

         // Play converted data
         waveOut.WriteData(buf2, 2*882);
      }

      Sleep(5);
	}

	return msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    It is important to call this function so that the application 
//    will get 'well formed' small icons associated with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance, LPTSTR szWindowClass)
{
	WNDCLASS	wc;

    wc.style			= CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc		= (WNDPROC) WndProc;
    wc.cbClsExtra		= 0;
    wc.cbWndExtra		= 0;
    wc.hInstance		= hInstance;
    wc.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_PPCSOUND));
    wc.hCursor			= 0;
    wc.hbrBackground	= (HBRUSH) GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName		= 0;
    wc.lpszClassName	= szWindowClass;

	return RegisterClass(&wc);
}

//
//  FUNCTION: InitInstance(HANDLE, int)
//
//  PURPOSE: Saves instance handle and creates main window
//
//  COMMENTS:
//
//    In this function, we save the instance handle in a global variable and
//    create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	HWND	hWnd = NULL;
	TCHAR	szTitle[MAX_LOADSTRING];			// The title bar text
	TCHAR	szWindowClass[MAX_LOADSTRING];		// The window class name

	g_hInst = hInstance;		// Store instance handle in our global variable
	// Initialize global strings
	LoadString(hInstance, IDC_PPCSOUND, szWindowClass, MAX_LOADSTRING);
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);

	//If it is already running, then focus on the window
	hWnd = FindWindow(szWindowClass, szTitle);	
	if (hWnd) 
	{
		// set focus to foremost child window
		// The "| 0x01" is used to bring any owned windows to the foreground and
		// activate them.
		SetForegroundWindow((HWND)((ULONG) hWnd | 0x00000001));
		return 0;
	} 

	MyRegisterClass(hInstance, szWindowClass);
	
	RECT	rect;
	GetClientRect(hWnd, &rect);
	
	hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
		CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
	if (!hWnd)
	{	
		return FALSE;
	}
	//When the main window is created using CW_USEDEFAULT the height of the menubar (if one
	// is created is not taken into account). So we resize the window after creating it
	// if a menubar is present
	{
		RECT rc;
		GetWindowRect(hWnd, &rc);
		rc.bottom -= MENU_HEIGHT;
		if (g_hwndCB)
			MoveWindow(hWnd, rc.left, rc.top, rc.right, rc.bottom, FALSE);
	}


	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC hdc;
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	TCHAR szHello[MAX_LOADSTRING];

	switch (message) 
	{
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			// Parse the menu selections:
			switch (wmId)
			{	
				case IDM_HELP_ABOUT:
					DialogBox(g_hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				    break;
				case IDOK:
					SendMessage(hWnd, WM_ACTIVATE, MAKEWPARAM(WA_INACTIVE, 0), (LPARAM)hWnd);
					SendMessage (hWnd, WM_CLOSE, 0, 0);
					break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;
		case WM_CREATE:
			g_hwndCB = CreateRpCommandBar(hWnd);
            // Initialize the shell activate info structure
            memset (&s_sai, 0, sizeof (s_sai));
            s_sai.cbSize = sizeof (s_sai);
			break;
		case WM_PAINT:
			RECT rt;
			hdc = BeginPaint(hWnd, &ps);
			GetClientRect(hWnd, &rt);
			LoadString(g_hInst, IDS_HELLO, szHello, MAX_LOADSTRING);
			DrawText(hdc, szHello, _tcslen(szHello), &rt, 
				DT_SINGLELINE | DT_VCENTER | DT_CENTER);
			EndPaint(hWnd, &ps);
			break; 
		case WM_DESTROY:
			CommandBar_Destroy(g_hwndCB);
			PostQuitMessage(0);
			break;
		case WM_ACTIVATE:
            // Notify shell of our activate message
			SHHandleWMActivate(hWnd, wParam, lParam, &s_sai, FALSE);
     		break;
		case WM_SETTINGCHANGE:
			SHHandleWMSettingChange(hWnd, wParam, lParam, &s_sai);
     		break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

HWND CreateRpCommandBar(HWND hwnd)
{
	SHMENUBARINFO mbi;

	memset(&mbi, 0, sizeof(SHMENUBARINFO));
	mbi.cbSize     = sizeof(SHMENUBARINFO);
	mbi.hwndParent = hwnd;
	mbi.nToolBarId = IDM_MENU;
	mbi.hInstRes   = g_hInst;
	mbi.nBmpId     = 0;
	mbi.cBmpImages = 0;

	if (!SHCreateMenuBar(&mbi)) 
		return NULL;

	return mbi.hwndMB;
}

// Mesage handler for the About box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	SHINITDLGINFO shidi;

	switch (message)
	{
		case WM_INITDIALOG:
			// Create a Done button and size it.  
			shidi.dwMask = SHIDIM_FLAGS;
			shidi.dwFlags = SHIDIF_DONEBUTTON | SHIDIF_SIPDOWN | SHIDIF_SIZEDLGFULLSCREEN;
			shidi.hDlg = hDlg;
			SHInitDialog(&shidi);
			return TRUE; 

		case WM_COMMAND:
			if (LOWORD(wParam) == IDOK)
			{
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
			}
			break;
	}
    return FALSE;
}