LosaDev source snapshot 2019

etc/Library/BVL/source/BandiVideoSound_NULL.cpp

@@ -0,0 +1,294 @@
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// BandiVideoLibrary 2.1
+/// 
+/// Copyright(C) 2008-2011 BandiSoft.com All rights reserved.
+///
+/// Visit http://www.bandisoft.com for more information.
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <process.h>
+#include "BandiVideoSound_NULL.h"
+
+CBandiVideoSound_NULL::CBandiVideoSound_NULL() : m_ref_count(0)
+{
+	m_init_count = 0;
+	m_start_time = 0;
+
+	memset(&m_crit_sec, NULL, sizeof(m_crit_sec));
+	m_crit_sec_inited = FALSE;	
+
+	m_playing = FALSE;
+
+	m_hevent = NULL;
+	m_hthread = NULL;
+	m_thread_id = 0;
+
+	m_callback = NULL;
+
+	// Performance Frequency ±¸Çϱâ
+	LARGE_INTEGER freq = {0, 0};
+	QueryPerformanceFrequency(&freq);
+	m_freq_units = freq.QuadPart;
+}
+
+
+CBandiVideoSound_NULL::~CBandiVideoSound_NULL()
+{
+	Close();
+}
+
+
+STDMETHODIMP_(ULONG) CBandiVideoSound_NULL::AddRef()
+{                             
+    LONG lRef = InterlockedIncrement( &m_ref_count );
+	ASSERT(lRef >= 0);
+
+    return m_ref_count;
+}
+
+
+STDMETHODIMP_(ULONG) CBandiVideoSound_NULL::Release()
+{
+    LONG lRef = InterlockedDecrement( &m_ref_count );
+    ASSERT(lRef >= 0);
+   
+	if(lRef == 0) 
+	{
+        delete this;
+        return ULONG(0);
+    }
+
+	return m_ref_count;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Open sound device.
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::Open(INT channels, INT samplerate, IBandiVideoSoundCB *callback)
+{
+	InitializeCriticalSection(&m_crit_sec);
+	m_crit_sec_inited = TRUE;
+
+	// Create an event object for periodical processing
+	m_hevent = CreateEvent(NULL, FALSE, FALSE, NULL);	// auto reset event
+	if(m_hevent == NULL)
+		goto error;
+
+	// Create thread for playback
+	m_hthread = (HANDLE)_beginthreadex(NULL, 0, InitialThreadProc, this, CREATE_SUSPENDED, &m_thread_id);
+	if(m_hthread == NULL)
+		goto error;
+
+	m_callback = callback;
+
+	SetThreadPriority(m_hthread, THREAD_PRIORITY_TIME_CRITICAL);
+	ResumeThread(m_hthread);
+
+	return S_OK;
+
+error:
+	Close();
+
+	return E_FAIL;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Close sound device.
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+void		CBandiVideoSound_NULL::Close()
+{
+    HANDLE hThread = (HANDLE)InterlockedExchangePointer(&m_hthread, 0);
+    if(hThread) 
+	{
+		if(m_hevent) SetEvent(m_hevent);
+
+		WaitForSingleObject(hThread, INFINITE);
+		CloseHandle(hThread);
+	}
+	
+	if(m_hevent)
+	{
+		CloseHandle(m_hevent);
+		m_hevent = NULL;
+	}
+
+	if(m_crit_sec_inited)
+	{
+		DeleteCriticalSection(&m_crit_sec);
+		m_crit_sec_inited = FALSE;
+	}
+
+	m_init_count = 0;
+	m_start_time = 0;
+}
+
+
+static LONGLONG GetPerformanceCounter()
+{
+	LARGE_INTEGER count;
+	::QueryPerformanceCounter(&count);
+	return count.QuadPart;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Start 
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::Start()
+{
+	EnterCriticalSection(&m_crit_sec);
+	{
+		m_init_count = GetPerformanceCounter();
+
+		m_start_time = 0;
+		m_playing = TRUE;
+	}
+	LeaveCriticalSection(&m_crit_sec);
+
+	return S_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Stop
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::Stop()
+{
+	EnterCriticalSection(&m_crit_sec);
+	{
+		m_start_time = 0;
+		m_playing = FALSE;
+	}
+	LeaveCriticalSection(&m_crit_sec);
+
+	return S_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Stop
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::Pause(BOOL pause)
+{
+	EnterCriticalSection(&m_crit_sec);
+	{
+		if(pause)
+		{
+			m_start_time = CalcTime();
+			m_playing = FALSE;
+		}
+		else
+		{
+			m_init_count = GetPerformanceCounter();
+			m_playing = TRUE;
+		}
+	}
+	LeaveCriticalSection(&m_crit_sec);
+
+	return S_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Get play time (100nsec units)
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::GetTime(INT64 &time)
+{
+	EnterCriticalSection(&m_crit_sec);
+	{
+		time = CalcTime();
+	}
+	LeaveCriticalSection(&m_crit_sec);
+
+	return S_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Set sound volume
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::SetVolume(INT volume)
+{
+	return E_NOTIMPL;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// ThreadProc
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+UINT	CBandiVideoSound_NULL::ThreadProc()
+{
+	BOOL bWorking = FALSE;
+	while(m_hthread)
+	{
+		EnterCriticalSection(&m_crit_sec);
+		{
+			if(m_playing)
+				PlayNULL();
+		}
+		LeaveCriticalSection(&m_crit_sec);
+		
+		WaitForSingleObject(m_hevent, 10);
+	}
+	
+	return 0;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Play NullSound
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+HRESULT		CBandiVideoSound_NULL::PlayNULL()
+{
+	if(m_callback)
+	{
+		INT16 buf[1024*2];
+		m_callback->GetPcmData(buf, 1024);
+	}
+
+	return S_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// 
+/// Calculate current time
+/// 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+LONGLONG	CBandiVideoSound_NULL::CalcTime()
+{
+	LONGLONG ret;
+	LONGLONG delta_time = 0;
+
+	EnterCriticalSection(&m_crit_sec);
+	{
+		if(m_playing && m_freq_units)
+			delta_time = LONGLONG(double(GetPerformanceCounter() - m_init_count)/(double)m_freq_units*10000000.0);
+
+		ret = m_start_time + delta_time;
+	}
+	LeaveCriticalSection(&m_crit_sec);
+
+	return ret;
+}