qt播放视频界面添加绘制

#include "VLCWrapperImpl.h" #include <stdio.h> #include <string> #include <sstream> #include <iomanip> #include <QRect> #include <vector> VLCWrapperImpl::VLCWrapperImpl() : m_pVLCInstance(nullptr) , m_pMediaPlayer(nullptr) , m_pMedia(nullptr) , m_pEventMgr(nullptr) , m_eventHandler(nullptr) , m_playHwnd(nullptr) { const char * const vlc_args[] = { "-I", "dumy", // No special interface "--directx-hw-yuv", "--no-directx-hw-yuv", "--ignore-config", // Don't use VLC's config "--plugin-path=./plugins", "--network-caching=1000" }; m_pVLCInstance = libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args); // Create a media player playing environement m_pMediaPlayer = libvlc_media_player_new(m_pVLCInstance); // Create an event manager for the player for handling e.g. time change events m_pEventMgr = libvlc_media_player_event_manager(m_pMediaPlayer); } VLCWrapperImpl::VLCWrapperImpl(int nBuffer) : m_pVLCInstance(nullptr) , m_pMediaPlayer(nullptr) , m_pMedia(nullptr) , m_pEventMgr(nullptr) , m_eventHandler(nullptr) , m_playHwnd(nullptr) { std::ostringstream ssBuffer; ssBuffer << "--network-caching=" << nBuffer; std::string strBuffer = ssBuffer.str(); const char * const vlc_args[] = { "-I", "dumy", // No special interface "--directx-hw-yuv", "--no-directx-hw-yuv", "--ignore-config", // Don't use VLC's config "--plugin-path=./plugins", strBuffer.c_str() }; m_pVLCInstance = libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args); // Create a media player playing environement m_pMediaPlayer = libvlc_media_player_new(m_pVLCInstance); // Create an event manager for the player for handling e.g. time change events m_pEventMgr = libvlc_media_player_event_manager(m_pMediaPlayer); } VLCWrapperImpl::~VLCWrapperImpl() { libvlc_media_player_release(m_pMediaPlayer); libvlc_release(m_pVLCInstance); } void VLCWrapperImpl::SetOutputWindow(HWND pHwnd) { // Set the output window if (m_playHwnd != pHwnd) { libvlc_media_player_set_hwnd(m_pMediaPlayer, pHwnd); m_playHwnd = pHwnd; } } void VLCWrapperImpl::SetEventHandler(VLCEventHandler event, void* pUserData) { std::vector <libvlc_event_e> events = { libvlc_MediaPlayerEncounteredError, libvlc_MediaPlayerEndReached, libvlc_MediaPlayerTimeChanged }; m_eventHandler = event; for (int i = 0; i < (int)events.size(); i++) { libvlc_event_attach(m_pEventMgr, events[i], m_eventHandler, pUserData); //添加事件 } } void VLCWrapperImpl::DeleteEventHandler(VLCEventHandler event, void* pUserData) { std::vector <libvlc_event_e> events = { libvlc_MediaPlayerEncounteredError, libvlc_MediaPlayerEndReached, libvlc_MediaPlayerTimeChanged }; m_eventHandler = event; for (int i = 0; i < (int)events.size(); i++) { libvlc_event_detach(m_pEventMgr, events[i], m_eventHandler, pUserData); //添加事件 } } bool VLCWrapperImpl::OpenMedia(const std::string & url) { m_pMedia = libvlc_media_new_location(m_pVLCInstance, url.c_str()); //m_pMedia = libvlc_media_new_path(m_pVLCInstance, url.c_str()); if (nullptr != m_pMedia) { libvlc_media_player_set_media(m_pMediaPlayer, m_pMedia); libvlc_media_release(m_pMedia);//20151106 return true; } return false; } bool VLCWrapperImpl::Play(int width, int height) { bool bRet = (0 == libvlc_media_player_play(m_pMediaPlayer)); if (bRet) { std::ostringstream os; os << width << ":" << height; libvlc_video_set_aspect_ratio(m_pMediaPlayer, os.str().c_str()); } return bRet; } void VLCWrapperImpl::Stop() { //if (IsPlaying()) { libvlc_media_player_stop(m_pMediaPlayer); } } int VLCWrapperImpl::SnapShot(unsigned num, const char *psz_filepath, unsigned int i_width, unsigned int i_height) { int iRet = 0; iRet = libvlc_video_take_snapshot(m_pMediaPlayer, num, psz_filepath, i_width, i_height); return iRet; } int VLCWrapperImpl::IsPlaying() { return libvlc_media_player_is_playing(m_pMediaPlayer); } libvlc_state_t VLCWrapperImpl::MediaGetState() { return libvlc_media_get_state(m_pMedia); }