505 lines
12 KiB
C++
505 lines
12 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// BandiVideoLibrary 2.1
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///
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/// Copyright(C) 2008-2011 BandiSoft.com All rights reserved.
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///
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/// Visit http://www.bandisoft.com for more information.
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#include <windows.h>
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#include <process.h>
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#include <math.h>
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#include "BandiVideoSound_DS.h"
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#define BVL_DSWND_CLASS_NAME _T("CBandiVideoSound_DS")
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CBandiVideoSound_DS::CBandiVideoSound_DS() : m_ref_count(0)
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{
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m_hwnd = NULL;
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m_hinst = NULL;
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m_ds = NULL;
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m_dsb_primary = NULL;
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m_dsb_secondary = NULL;
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m_channels = m_samplerate = 0;
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m_last_write_pos = 0;
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m_inbuf_samples = m_total_samples = 0;
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m_cur_play_time = 0;
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memset(&m_crit_sec, NULL, sizeof(m_crit_sec));
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m_crit_sec_inited = FALSE;
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m_hevent = NULL;
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m_hthread = NULL;
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m_thread_id = 0;
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m_playing = FALSE;
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m_callback = NULL;
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m_outbuf_size_max = -1;
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m_outbuf_size_min = -1;
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memset(m_sample_block, NULL, PLAY_SAMPLE_BLOCK_LEN);
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m_sample_block_size = 0;
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}
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CBandiVideoSound_DS::~CBandiVideoSound_DS()
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{
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Close();
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}
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STDMETHODIMP_(ULONG) CBandiVideoSound_DS::AddRef()
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{
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LONG lRef = InterlockedIncrement(&m_ref_count);
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ASSERT(lRef >= 0);
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return m_ref_count;
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}
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STDMETHODIMP_(ULONG) CBandiVideoSound_DS::Release()
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{
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LONG lRef = InterlockedDecrement(&m_ref_count);
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ASSERT(lRef >= 0);
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if(lRef == 0)
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{
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delete this;
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return ULONG(0);
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}
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return m_ref_count;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Open sound device.
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::Open(INT channels, INT samplerate, IBandiVideoSoundCB *callback)
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{
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Close();
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HRESULT hr = E_FAIL;
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m_hinst = (HINSTANCE)GetModuleHandle(NULL);
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if(m_hinst == NULL) goto error;
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WNDCLASS wc;
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ZeroMemory(&wc, sizeof(wc));
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wc.lpfnWndProc = DefWindowProc;
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wc.lpszClassName = BVL_DSWND_CLASS_NAME;
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RegisterClass(&wc);
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// 버퍼타임으로 버퍼 byte 크기 계산
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m_outbuf_size_max = MulDiv(samplerate * channels * 2, MAX_BUFFER_TIME , 1000) ;
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m_outbuf_size_min = MulDiv(samplerate * channels * 2, MIN_BUFFER_TIME ,1000 );
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// Create dummy window
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m_hwnd = CreateWindow(BVL_DSWND_CLASS_NAME, _T(""), 0, 0, 0, 0, 0, NULL, NULL, m_hinst, 0L);
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if(m_hwnd == NULL)
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goto error;
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// Create Direct Sound Instance
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hr = DirectSoundCreate8(NULL, &m_ds, NULL);
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if(FAILED(hr))
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goto error;
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hr = m_ds->SetCooperativeLevel(m_hwnd, DSSCL_PRIORITY);
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if(FAILED(hr))
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goto error;
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// Create a primary buffer
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DSBUFFERDESC dsbdesc;
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ZeroMemory(&dsbdesc, sizeof(DSBUFFERDESC));
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dsbdesc.dwSize = sizeof(DSBUFFERDESC);
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dsbdesc.dwFlags = DSBCAPS_PRIMARYBUFFER;
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hr = m_ds->CreateSoundBuffer(&dsbdesc, &m_dsb_primary, NULL);
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if(FAILED(hr))
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goto error;
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// Set format of the primary buffer
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WAVEFORMATEX wfx;
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ZeroMemory(&wfx, sizeof(WAVEFORMATEX));
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wfx.wFormatTag = WAVE_FORMAT_PCM;
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wfx.nChannels = channels;
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wfx.nSamplesPerSec = samplerate;
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wfx.wBitsPerSample = 16;
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wfx.nBlockAlign = wfx.wBitsPerSample / 8 * wfx.nChannels;
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wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
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hr = m_dsb_primary->SetFormat(&wfx);
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if(FAILED(hr))
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goto error;
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// Create secondary sound buffer
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ZeroMemory(&dsbdesc, sizeof(DSBUFFERDESC));
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dsbdesc.dwSize = sizeof(DSBUFFERDESC);
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dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS
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/*| DSBCAPS_LOCDEFER | DSBCAPS_CTRLFREQUENCY*/ | DSBCAPS_CTRLVOLUME;
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dsbdesc.dwBufferBytes = m_outbuf_size_max;
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dsbdesc.lpwfxFormat = &wfx;
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hr = m_ds->CreateSoundBuffer(&dsbdesc, &m_dsb_secondary, NULL);
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if(FAILED(hr))
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goto error;
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InitializeCriticalSection(&m_crit_sec);
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m_crit_sec_inited = TRUE;
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// Create an event object for periodical processing
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m_hevent = CreateEvent(NULL, FALSE, FALSE, NULL); // auto reset event
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if(m_hevent == NULL)
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goto error;
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// Create thread for playback
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m_hthread = (HANDLE)_beginthreadex(NULL, 0, InitialThreadProc, this, CREATE_SUSPENDED, &m_thread_id);
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if(m_hthread == NULL)
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goto error;
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m_channels = channels;
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m_samplerate = samplerate;
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m_callback = callback;
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memset(m_sample_block, NULL, PLAY_SAMPLE_BLOCK_LEN);
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m_sample_block_size = 0;
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SetThreadPriority(m_hthread, THREAD_PRIORITY_TIME_CRITICAL);
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ResumeThread(m_hthread);
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return S_OK;
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error:
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Close();
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return FAILED(hr) ? hr : E_FAIL;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Close sound device.
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void CBandiVideoSound_DS::Close()
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{
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HANDLE hThread = (HANDLE)InterlockedExchangePointer(&m_hthread, 0);
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if(hThread)
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{
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if(m_hevent) SetEvent(m_hevent);
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WaitForSingleObject(hThread, INFINITE);
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CloseHandle(hThread);
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}
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if(m_hevent)
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{
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CloseHandle(m_hevent);
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m_hevent = NULL;
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}
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if(m_crit_sec_inited)
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{
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DeleteCriticalSection(&m_crit_sec);
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m_crit_sec_inited = FALSE;
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}
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if(m_dsb_secondary)
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{
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m_dsb_secondary->Release();
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m_dsb_secondary = NULL;
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}
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if(m_dsb_primary)
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{
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m_dsb_primary->Release();
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m_dsb_primary = NULL;
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}
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if(m_ds)
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{
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m_ds->Release();
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m_ds = NULL;
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}
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if(m_hwnd)
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{
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DestroyWindow(m_hwnd);
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UnregisterClass(BVL_DSWND_CLASS_NAME, m_hinst);
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m_hwnd = NULL;
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}
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m_channels = m_samplerate = 0;
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m_last_write_pos = 0;
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m_inbuf_samples = m_total_samples = 0;
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m_cur_play_time = 0;
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m_playing = FALSE;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Start
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::Start()
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{
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EnterCriticalSection(&m_crit_sec);
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m_playing = TRUE;
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LeaveCriticalSection(&m_crit_sec);
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return S_OK;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Stop
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::Stop()
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{
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EnterCriticalSection(&m_crit_sec);
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m_playing = FALSE;
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if(m_dsb_secondary)
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{
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BYTE *pbData = NULL;
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BYTE *pbData2 = NULL;
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DWORD dwLength=0;
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DWORD dwLength2=0;
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m_dsb_secondary->Stop();
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m_dsb_secondary->SetCurrentPosition(0);
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// Lock DirectSound buffer
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m_dsb_secondary->Lock(0, m_outbuf_size_max, (void**)&pbData, &dwLength, (void**)&pbData2, &dwLength2, 0);
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if(pbData) memset(pbData, 0, dwLength);
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if(pbData2) memset(pbData2, 0, dwLength2);
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// Unlock the buffer
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m_dsb_secondary->Unlock(pbData, dwLength, pbData2, dwLength2);
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m_last_write_pos = 0;
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m_total_samples = m_inbuf_samples = 0;
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m_cur_play_time = 0;
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memset(m_sample_block, NULL, PLAY_SAMPLE_BLOCK_LEN);
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m_sample_block_size = 0;
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}
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LeaveCriticalSection(&m_crit_sec);
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return S_OK;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Stop
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::Pause(BOOL pause)
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{
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EnterCriticalSection(&m_crit_sec);
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if(pause)
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{
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m_playing = FALSE;
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if(m_dsb_secondary) m_dsb_secondary->Stop();
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}
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else
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{
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m_playing = TRUE;
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}
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LeaveCriticalSection(&m_crit_sec);
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return S_OK;
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}
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#include <stdio.h>
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Get play time (100nsec units)
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::GetTime(INT64 &time)
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{
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EnterCriticalSection(&m_crit_sec);
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time = m_cur_play_time;
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LeaveCriticalSection(&m_crit_sec);
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return S_OK;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Set sound volume
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::SetVolume(INT volume)
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{
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if(m_dsb_secondary == NULL)
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return E_POINTER;
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double lfPower10 = pow(10.0,-10.0); // 10^(-10);
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double lfVolume = (1 - lfPower10)*((double)volume/255) + lfPower10;
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lfVolume = 10*log10(lfVolume);
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lfVolume *= 300;
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if(lfVolume < -10000)
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lfVolume = -10000;
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return m_dsb_secondary->SetVolume((LONG)lfVolume);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// ThreadProc
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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UINT CBandiVideoSound_DS::ThreadProc()
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{
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BOOL bWorking = FALSE;
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while(m_hthread)
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{
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EnterCriticalSection(&m_crit_sec);
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{
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if(m_playing)
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PlayDS();
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}
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LeaveCriticalSection(&m_crit_sec);
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WaitForSingleObject(m_hevent, 2);
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}
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Play DirectSound
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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HRESULT CBandiVideoSound_DS::PlayDS()
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{
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HRESULT hr;
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int sample_bytes = m_channels*sizeof(INT16);
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DWORD free_buffer_size = GetFreeBufferSize();
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// Update play position
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m_inbuf_samples = (m_outbuf_size_max - free_buffer_size)/(m_channels*sizeof(INT16));
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m_cur_play_time = max((m_total_samples - m_inbuf_samples)*10000000i64/m_samplerate, 0);
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// Transfer PCM data to Direct Sound Buffer
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if(m_callback)
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{
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void *lock1_ptr = NULL;
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void *lock2_ptr = NULL;
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DWORD lock1_bytes = 0;
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DWORD lock2_bytes = 0;
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if(m_sample_block_size < PLAY_SAMPLE_BLOCK_LEN)
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{
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int req_samples = (PLAY_SAMPLE_BLOCK_LEN-m_sample_block_size)/sample_bytes;
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int get_samples = m_callback->GetPcmData((INT16*)(&m_sample_block[m_sample_block_size]), req_samples);
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m_sample_block_size += get_samples*sample_bytes;
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}
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if(m_sample_block_size == PLAY_SAMPLE_BLOCK_LEN && m_sample_block_size <= free_buffer_size)
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{
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hr = m_dsb_secondary->Lock(m_last_write_pos, m_sample_block_size,
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&lock1_ptr, &lock1_bytes,
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&lock2_ptr, &lock2_bytes, 0);
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if(hr == DSERR_BUFFERLOST)
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{
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m_dsb_secondary->Restore();
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hr = m_dsb_secondary->Lock(m_last_write_pos, m_sample_block_size,
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&lock1_ptr, &lock1_bytes,
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&lock2_ptr, &lock2_bytes, 0);
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}
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if(FAILED(hr)) return hr;
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if(lock1_ptr) memcpy(lock1_ptr, m_sample_block, lock1_bytes);
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if(lock2_ptr) memcpy(lock2_ptr, m_sample_block+lock1_bytes, lock2_bytes);
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m_dsb_secondary->Unlock(lock1_ptr, lock1_bytes, lock2_ptr, lock2_bytes);
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// Update Write Pointer
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m_total_samples += m_sample_block_size/sample_bytes;
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m_last_write_pos += m_sample_block_size;
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if (INT(m_last_write_pos) >= m_outbuf_size_max)
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m_last_write_pos = m_last_write_pos - m_outbuf_size_max;
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m_sample_block_size = 0;
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}
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}
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// PLAYBACK control
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DWORD dsb_status;
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m_dsb_secondary->GetStatus(&dsb_status);
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if((dsb_status & DSBSTATUS_PLAYING) == 0)
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{
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if (m_inbuf_samples >= m_outbuf_size_min)
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{
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m_dsb_secondary->Play(0, 0, DSBPLAY_LOOPING);
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}
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}
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return S_OK;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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///
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/// Get amount of free data in the buffer
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///
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////////////////////////////////////////////////////////////////////////////////////////////////////
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DWORD CBandiVideoSound_DS::GetFreeBufferSize()
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{
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if(m_dsb_secondary == NULL) return 0;
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if(m_total_samples == 0)
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return m_outbuf_size_max;
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DWORD play_pos;
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DWORD free_buffer_size = 0;
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if(SUCCEEDED(m_dsb_secondary->GetCurrentPosition(&play_pos, NULL)))
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{
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if(m_last_write_pos > play_pos)
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free_buffer_size = (m_outbuf_size_max - m_last_write_pos) + play_pos;
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else
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free_buffer_size = play_pos - m_last_write_pos;
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}
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else
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{
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free_buffer_size = m_outbuf_size_max;
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}
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return free_buffer_size;
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}
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