DIGITALVIDEO.CPP
资源名称:vcavi.rar [点击查看]
上传用户:shonly
上传日期:2022-06-05
资源大小:1939k
文件大小:7k
源码类别:
多媒体
开发平台:
Visual C++
- // DigitalVideo.cpp: implementation of the CDigitalvideo class.
- //
- //////////////////////////////////////////////////////////////////////
- #include "stdafx.h"
- #include "VideoPlayer.h"
- #include "Digitalvideo.h"
- #ifdef _DEBUG
- #undef THIS_FILE
- static char THIS_FILE[]=__FILE__;
- #define new DEBUG_NEW
- #endif
- //////////////////////////////////////////////////////////////////////
- // Construction/Destruction
- //////////////////////////////////////////////////////////////////////
- CDigitalvideo::CDigitalvideo()
- {
- // 初始化成员变量
- m_Open = m_Pause = m_Playing = FALSE;
- m_DeviceID = 0;
- }
- CDigitalvideo::~CDigitalvideo()
- {
- Close ();
- }
- BOOL CDigitalvideo::GetPause ()//是否暂停
- {
- return m_Pause;
- }
- BOOL CDigitalvideo::Open (CString Filename, CWnd *pWnd, int left, int top,int width,int height)
- {
- if (!m_Open){//如果m_Open=false,没有打开设备
- // 初始化成员变量
- m_Open = m_Pause = m_Playing = FALSE;
- m_DeviceID = 0;
- // 文件是否存在
- CFileStatus Status;
- if (!CFile::GetStatus (Filename, Status))
- return FALSE;
- // 打开设备
- MCI_DGV_OPEN_PARMS MCIOpen;
- MCIOpen.lpstrDeviceType = "avivideo";//设置播放设备为视频播放设备
- MCIOpen.lpstrElementName = (LPSTR) Filename.GetBuffer (0);//文件名
- MCIOpen.wDeviceID = NULL;
- MCIOpen.hWndParent = pWnd->m_hWnd;//可播放视频文件窗口指针
- MCIOpen.dwStyle = WS_CHILD | WS_VISIBLE;
- if (mciSendCommand (NULL, MCI_OPEN, MCI_WAIT | MCI_OPEN_TYPE |
- MCI_OPEN_ELEMENT | MCI_DGV_OPEN_PARENT | MCI_DGV_OPEN_WS, (DWORD)(LPVOID) &MCIOpen))
- return FALSE;
- m_DeviceID = MCIOpen.wDeviceID;
- m_Open = TRUE;
- // 将文件长度设置为帧
- MCI_DGV_SET_PARMS MCISet;
- MCISet.dwTimeFormat = MCI_FORMAT_FRAMES;
- if (mciSendCommand (m_DeviceID, MCI_SET, MCI_SET_TIME_FORMAT, (DWORD)(LPVOID) &MCISet)){
- Close ();
- return FALSE;
- }
- // 找到视频文件的开始位置
- mciSendCommand (m_DeviceID, MCI_SEEK, MCI_SEEK_TO_START, NULL);
- //将播放画面置于主窗口之中
- MCI_DGV_PUT_PARMS MCIPut;
- MCIPut.rc.left = left;
- MCIPut.rc.top = top;
- MCIPut.rc.right = width;
- MCIPut.rc.bottom = height;
- if (mciSendCommand (m_DeviceID, MCI_PUT, MCI_WAIT | MCI_DGV_PUT_CLIENT |
- MCI_DGV_PUT_WINDOW | MCI_DGV_RECT, (DWORD)(LPVOID) &MCIPut)){
- Close ();
- return FALSE;
- }
- }
- return TRUE;
- }
- void CDigitalvideo::Close (void)
- {
- if (m_Open){// 停止播放并关闭设备
- if (m_Playing || m_Pause)
- mciSendCommand (m_DeviceID, MCI_STOP, NULL, NULL);
- mciSendCommand (m_DeviceID, MCI_CLOSE, NULL, NULL);
- // 清空成员变量
- m_Open = m_Pause = m_Playing = FALSE;
- m_DeviceID = NULL;
- }
- }
- //获得视频文件窗口的宽度
- int CDigitalvideo::GetWidth (void)
- {
- if (m_Open){
- MCI_DGV_WHERE_PARMS MCIWhere;
- if (mciSendCommand (m_DeviceID, MCI_WHERE, MCI_DGV_WHERE_SOURCE,
- (DWORD)(LPVOID) &MCIWhere)){
- return 0;
- }
- return (int) MCIWhere.rc.right;
- }
- return 0;
- }
- //获得视频文件窗口的高度
- int CDigitalvideo::GetHeight (void)
- {
- if (m_Open){
- MCI_DGV_WHERE_PARMS MCIWhere;
- if (mciSendCommand (m_DeviceID, MCI_WHERE, MCI_DGV_WHERE_SOURCE,
- (DWORD)(LPVOID) &MCIWhere)){
- return 0;
- }
- return (int) MCIWhere.rc.bottom;
- }
- return 0;
- }
- BOOL CDigitalvideo::Play (BOOL bLoop, BOOL bFullScreen)
- {
- if (m_Open){
- // 如果是视频的尾部则重新开始播放
- if (GetFrame () >= GetFrames ())
- mciSendCommand (m_DeviceID, MCI_SEEK, MCI_SEEK_TO_START, NULL);
- // 播放
- MCI_DGV_PLAY_PARMS MCIPlay;
- MCIPlay.dwCallback = NULL;
- MCIPlay.dwFrom = GetFrame ();
- DWORD dwFlags = MCI_FROM;
- if (bLoop)
- dwFlags |= MCI_DGV_PLAY_REPEAT;
- if (bFullScreen)
- dwFlags |= MCI_MCIAVI_PLAY_FULLSCREEN;
- if (mciSendCommand (m_DeviceID, MCI_PLAY, dwFlags, (DWORD)(LPVOID) &MCIPlay))
- return FALSE;
- m_Pause = FALSE;
- m_Playing = TRUE;
- return TRUE;
- }
- return FALSE;
- }
- void CDigitalvideo::Stop (void)
- {
- if (m_Open && m_Playing){
- mciSendCommand (m_DeviceID, MCI_STOP, NULL, NULL);
- mciSendCommand (m_DeviceID, MCI_SEEK, MCI_SEEK_TO_START, NULL);
- m_Playing = FALSE;
- m_Pause = TRUE;
- }
- }
- void CDigitalvideo::Pause( void )
- {
- if (m_Open ){
- MCI_DGV_PAUSE_PARMS MCIPause;
- if (mciSendCommand (m_DeviceID, MCI_PAUSE, 0, (DWORD)(LPVOID) &MCIPause))
- return;
- m_Pause = TRUE;
- }
- }
- int CDigitalvideo::GetFrames (void)
- {
- if (m_Open){
- MCI_DGV_STATUS_PARMS MCIStatus;
- MCIStatus.dwItem = MCI_STATUS_LENGTH;
- if (mciSendCommand (m_DeviceID, MCI_STATUS, MCI_WAIT |
- MCI_STATUS_ITEM, (DWORD)(LPVOID) &MCIStatus))
- return 0;
- return (int) MCIStatus.dwReturn;
- }
- return 0;
- }
- int CDigitalvideo::GetFrame (void)
- {
- if (m_Open){
- MCI_DGV_STATUS_PARMS MCIStatus;
- MCIStatus.dwItem = MCI_STATUS_POSITION;
- if (mciSendCommand (m_DeviceID, MCI_STATUS, MCI_WAIT |
- MCI_STATUS_ITEM, (DWORD)(LPVOID) &MCIStatus))
- return -1;
- return (int) MCIStatus.dwReturn;
- }
- return -1;
- }
- BOOL CDigitalvideo::IsPlaying ()
- {
- if (m_Open)
- {
- MCI_DGV_STATUS_PARMS MCIStatus;
- MCIStatus.dwItem = MCI_STATUS_MODE;
- if (mciSendCommand (m_DeviceID, MCI_STATUS, MCI_WAIT |
- MCI_STATUS_ITEM, (DWORD)(LPVOID) &MCIStatus))
- return FALSE;
- if (MCIStatus.dwReturn == MCI_MODE_PLAY)
- {
- m_Playing = TRUE;
- m_Pause = FALSE;
- return TRUE;
- }
- else if (MCIStatus.dwReturn == MCI_MODE_PAUSE)
- {
- m_Playing = TRUE;
- m_Pause = FALSE;
- return TRUE;
- }
- else
- {
- m_Playing = FALSE;
- m_Pause = FALSE;
- return FALSE;
- }
- }
- return FALSE;
- }
- BOOL CDigitalvideo::SeekTo (int nFrame)
- {
- if (m_Open){
- MCI_SEEK_PARMS MCISeek;
- MCISeek.dwTo = nFrame;
- if (m_Playing && !m_Pause)
- mciSendCommand (m_DeviceID, MCI_PAUSE, 0, NULL);
- if (mciSendCommand (m_DeviceID, MCI_SEEK, MCI_TO |
- MCI_WAIT, (DWORD)(LPVOID) &MCISeek))
- return FALSE;
- if (m_Playing && !m_Pause)
- Play ();
- return TRUE;
- }
- return FALSE;
- }
- void CDigitalvideo::Forward (int nFrames)
- {
- if (m_Open){
- if (m_Playing && !m_Pause)
- Pause ();
- MCI_DGV_STEP_PARMS MCIStep;
- MCIStep.dwFrames = nFrames;
- mciSendCommand (m_DeviceID, MCI_STEP, MCI_DGV_STEP_FRAMES,
- (DWORD)(LPVOID) &MCIStep);
- }
- }
- void CDigitalvideo::Backward (int nFrames)
- {
- if (m_Open){
- if (m_Playing && !m_Pause)
- Pause ();
- MCI_DGV_STEP_PARMS MCIStep;
- MCIStep.dwFrames = nFrames;
- mciSendCommand (m_DeviceID, MCI_STEP, MCI_DGV_STEP_REVERSE |
- MCI_DGV_STEP_FRAMES, (DWORD)(LPVOID) &MCIStep);
- }
- }
- int CDigitalvideo::GetSpeed (void)
- {
- if (m_Open){
- MCI_DGV_STATUS_PARMS MCIStatus;
- MCIStatus.dwItem = MCI_DGV_STATUS_SPEED;
- if (mciSendCommand (m_DeviceID, MCI_STATUS, MCI_WAIT |
- MCI_STATUS_ITEM, (DWORD)(LPVOID) &MCIStatus))
- return -1;
- return (int) MCIStatus.dwReturn;
- }
- return -1;
- }
- void CDigitalvideo::SetSpeed (int nSpeed)
- {
- if (m_Open){
- MCI_DGV_SET_PARMS MCISet;
- MCISet.dwSpeed = nSpeed;
- mciSendCommand (m_DeviceID, MCI_SET, MCI_WAIT |
- MCI_DGV_SET_SPEED, (DWORD)(LPVOID) &MCISet);
- }
- }
- /*void CDigitalvideo::SetSound (BOOL bSound)
- {
- if (m_Open)
- {
- MCI_DGV_SET_PARMS MCISet;
- MCISet.dwAudio = MCI_SET_AUDIO_ALL;
- DWORD dwFlags = MCI_SET_AUDIO;
- if (bSound)
- dwFlags |= MCI_SET_ON;
- else
- dwFlags |= MCI_SET_OFF;
- mciSendCommand (m_DeviceID, MCI_SET, dwFlags, (DWORD)(LPVOID) &MCISet);
- }
- }
- BOOL CDigitalvideo::GetSound (void)
- {
- if (m_Open)
- {
- MCI_DGV_STATUS_PARMS MCIStatus;
- MCIStatus.dwItem = MCI_DGV_STATUS_AUDIO;
- if (mciSendCommand (m_DeviceID, MCI_STATUS, MCI_WAIT |
- MCI_STATUS_ITEM, (DWORD)(LPVOID) &MCIStatus))
- return FALSE;
- if (MCIStatus.dwReturn == MCI_ON)
- return TRUE;
- else
- return FALSE;
- }
- return FALSE;
- }*/