使用libvlc播放音樂，實時獲取位置、播放狀態、時長，播放httpURL
阿新 • • 發佈：2018-11-09
#include <iostream> #include <unistd.h> #include "vlc/vlc.h" #include "libvlc.h" #include "libvlc_media_player.h" #include "libvlc_media.h" #include "log_c.h" #include "VlcMusicPlayer.h" #define url_temp "/share/music/1KHz-stero.wav" #define http_url "http://101.132.74.49:8080/bcch.wav" int main(int argc, char **argv) { VlcMusicPlayer VlcMusicPlayerHandle; int i =0; for(i = 0; i < argc ;i++ ) { LOG_ERROR(("%d argv %s",i, argv[i])); } if(std::string(argv[1]) == std::string("http")) { std::string url(http_url); LOG_ERROR(("=%s", url.c_str())); VlcMusicPlayerHandle.openUrl( url); } else { std::string url(url_temp); LOG_ERROR(("=%s", url.c_str())); VlcMusicPlayerHandle.openFile( url); } while(1) { sleep(0xff); } return 0; }
VlcMusicPlayer.h
/****************************** * Qt player using libVLC * * By protonux * * * * Under WTFPL * ******************************/ #ifndef VlcMusicPlayer_H #define VlcMusicPlayer_H #include <iostream> #include "vlc/vlc.h" #include "libvlc.h" #include "libvlc_media_player.h" #include "libvlc_media.h" class VlcMusicPlayer { public: VlcMusicPlayer(); virtual ~VlcMusicPlayer(); public: int init(); void openFile(const std::string & file_string); void openUrl(const std::string & url); void play(); void stop(); void mute(); int changeVolume(int); void changePosition(int); void updateInterface(); void timer(int ms); void StartTimer(); void StopTimer(); #if 0 void music_register(); void music_unregister(); void OnEndReached( const struct libvlc_event_t *p_event, void *p_data ); void OnPositionChanged( const struct libvlc_event_t *p_event, void *p_data ); #endif private: libvlc_instance_t *vlcInstance; libvlc_media_player_t *vlcPlayer; libvlc_media_t *vlcMedia ; libvlc_event_manager_t *vlc_evt_man; long long m_s64Duration; int m_nCurPos; bool m_isMuteFlag; int m_cur_vol; libvlc_state_t m_emPlayState; }; #endif
VlcMusicPlayer.cpp
#include <unistd.h> #include <thread> #include "VlcMusicPlayer.h" #include "log_c.h" static int g_sStopTimerFlag = 0; #define TimerInternal (300) VlcMusicPlayer::VlcMusicPlayer() { vlcPlayer = NULL; vlcInstance = NULL; vlcMedia = NULL ; vlc_evt_man = NULL; m_s64Duration = -1; m_nCurPos = -1; m_isMuteFlag = false; m_cur_vol = 0; m_emPlayState = libvlc_NothingSpecial; int ret = init(); if(0 != ret) { LOG_ERROR((" VlcMusicPlayer init error!")); return ; } } VlcMusicPlayer::~VlcMusicPlayer() { /* Release libVLC instance on quit */ LOG_ERROR((" ")); stop(); if (vlcInstance) { libvlc_release(vlcInstance); } } int VlcMusicPlayer::init() { static bool sInitFlag = false; if(sInitFlag == true) { LOG_ERROR((" libVLC player do not repeat init libVLC")); return 0; } /* Initialize libVLC */ vlcInstance = libvlc_new(0, NULL); /* Complain in case of broken installation */ if (vlcInstance == NULL) { LOG_ERROR((" libVLC player Could not init libVLC")); return -1; } sInitFlag= true ; LOG_ERROR((" libVLC player init libVLC success ")); return 0; /* Interface initialization */ } void VlcMusicPlayer::openFile(const std::string & file_string) { /* The basic file-select box */ //url to utf-8 url /* Stop if something is playing */ if (vlcPlayer && libvlc_media_player_is_playing(vlcPlayer)) { LOG_DEBUG(("libvlc_media_player_is_playing ,to stop ")); stop(); } /* Create a new Media */ vlcMedia = libvlc_media_new_path(vlcInstance, file_string.c_str()); if (!vlcMedia) { LOG_ERROR(("libvlc_media_new_path error ")); return; } /* Create a new libvlc player */ vlcPlayer = libvlc_media_player_new_from_media (vlcMedia); if(NULL == vlcPlayer) { LOG_ERROR(("libvlc_media_player_new_from_media error ")); return; } /* Release the media */ //libvlc_media_release(vlcMedia); /* And start playback */ libvlc_media_player_play (vlcPlayer); StartTimer(); /* Update playback button */ //playBut->setText("Pause"); } void VlcMusicPlayer::openUrl(const std::string & url) { /* The basic file-select box */ //url to utf-8 url /* Stop if something is playing */ if (vlcPlayer && libvlc_media_player_is_playing(vlcPlayer)) { LOG_DEBUG(("libvlc_media_player_is_playing ,to stop ")); stop(); } /* Create a new Media */ vlcMedia = libvlc_media_new_location(vlcInstance, url.c_str()); if (!vlcMedia) { LOG_ERROR(("libvlc_media_new_location error ")); return; } /* Create a new libvlc player */ vlcPlayer = libvlc_media_player_new_from_media (vlcMedia); if(NULL == vlcPlayer) { LOG_ERROR(("libvlc_media_player_new_from_media error ")); return; } /* Release the media */ //libvlc_media_release(vlcMedia); /* And start playback */; libvlc_media_player_play (vlcPlayer); StartTimer(); /* Update playback button */ //playBut->setText("Pause"); } void VlcMusicPlayer::play() { if (!vlcPlayer) { LOG_ERROR(("vlcPlayer is NULL ")); return; } if (libvlc_media_player_is_playing(vlcPlayer)) { /* Pause */ LOG_DEBUG(("NEXT libvlc_media_player_pause()")); libvlc_media_player_pause(vlcPlayer); // playBut->setText("Play"); } else { /* Play again */ LOG_DEBUG(("NEXT libvlc_media_player_play()")); libvlc_media_player_play(vlcPlayer); ///playBut->setText("Pause"); } } int VlcMusicPlayer::changeVolume(int vol) { /* Called on volume slider change */ if (vlcPlayer) { int ret = 0; LOG_DEBUG(("NEXT libvlc_audio_set_volume() vol = %d", vol)); ret = libvlc_audio_set_volume (vlcPlayer,vol); m_cur_vol = vol; return ret; } return 0; } void VlcMusicPlayer::changePosition(int pos) { /* Called on position slider change */ if (vlcPlayer) { LOG_DEBUG(("NEXT libvlc_media_player_set_position() pos = %d", pos)); libvlc_media_player_set_position(vlcPlayer, (float)pos/1000.0); } } void VlcMusicPlayer::updateInterface() //timer { //Update interface and check if song is finished if (NULL !=vlcPlayer) { /* update the timeline */ float pos = libvlc_media_player_get_position(vlcPlayer); //pos is 0.01~0.99 1.0 m_nCurPos = (int)(pos*1000.0); /* Stop the media */ libvlc_state_t state = libvlc_media_player_get_state(vlcPlayer); m_emPlayState = state;//libvlc_state_t m_emPlayState LOG_DEBUG(("state{%d} m_nCurPos = %d",state, m_nCurPos)); if (state == libvlc_Ended) { this->stop(); } } if(NULL != vlcMedia) { long long s64Duration = libvlc_media_get_duration( vlcMedia); if(-1 != s64Duration) //s64Duration/1000 s { m_s64Duration = s64Duration; long long min = s64Duration/1000/60; long long sec = s64Duration/1000%60; LOG_DEBUG(("m_s64Duration{%lld} %lld:%lld",m_s64Duration , min,sec)); } } } void VlcMusicPlayer::timer(int ms) { while(1) { if(g_sStopTimerFlag == 0) { LOG_DEBUG(("break")); break; } updateInterface(); usleep(1000*ms);// ms } } void VlcMusicPlayer::StartTimer() { g_sStopTimerFlag = 1; LOG_DEBUG((" ")); std::thread t(&VlcMusicPlayer::timer, this , TimerInternal); t.detach(); } void VlcMusicPlayer::StopTimer() { g_sStopTimerFlag = 0; LOG_DEBUG((" ")); } void VlcMusicPlayer::stop() { LOG_DEBUG((" ")); StopTimer(); if(vlcMedia) { /* Release the media */ libvlc_media_release(vlcMedia); vlcMedia = NULL; } if(vlcPlayer) { /* stop the media player */ libvlc_media_player_stop(vlcPlayer); /* release the media player */ libvlc_media_player_release(vlcPlayer); /* Reset application values */ vlcPlayer = NULL; m_emPlayState = libvlc_NothingSpecial; m_nCurPos = 0; // slider->setValue(0); //playBut->setText("Play"); } } void VlcMusicPlayer::mute() { if(vlcPlayer) { if(m_isMuteFlag == true) { //if already muted... this->changeVolume(80); m_cur_vol = 80; m_isMuteFlag = false; //volumeSlider->setValue(80); } else { //else mute volume m_isMuteFlag = true; m_cur_vol = 0; this->changeVolume(0); //volumeSlider->setValue(0); } } } #if 0 void VlcMusicPlayer::music_register() { #if 0 libvlc_event_manager_t * libvlc_media_player_event_manager( libvlc_media_player_t *p_mi ) { return &p_mi->event_manager; } typedef void ( *libvlc_callback_t )( const struct libvlc_event_t *p_event, void *p_data ); libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerEndReached, ::OnEndReached_VLC, NULL); #endif if(NULL == vlcPlayer) { LOG_ERROR(("vlcPlayer is NULL ")); return ; } vlc_evt_man = libvlc_media_player_event_manager(vlcPlayer); libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerEndReached, (libvlc_callback_t) (&VlcMusicPlayer::OnEndReached), NULL); libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerPositionChanged, (libvlc_callback_t)(&VlcMusicPlayer::OnPositionChanged), NULL); return ; } void VlcMusicPlayer::music_unregister() { } void VlcMusicPlayer::OnEndReached( const struct libvlc_event_t *p_event, void *p_data ) { LOG_ERROR((" ")); this->stop(); } void VlcMusicPlayer:: OnPositionChanged( const struct libvlc_event_t *p_event, void *p_data ) { if(NULL == vlcPlayer) { LOG_ERROR(("vlcPlayer is NULL ")); return ; } float factor = libvlc_media_player_get_position(vlcPlayer); LOG_ERROR((" factor [%.2f] ",factor)); } #endif
CXX = g++
CFLAGS = -Wall -g -std=c++11 -pthread
PWD_OUT := /share/demo_vlc
PWD_SRC := /share/demo_vlc
CICLUDES_PWD := -I /usr/include/vlc -I /usr/include/
CSO_PWD := /usr/lib
libname1 := -lvlc
OBJS := $(PWD_OUT)/vlc_demo.o
OBJS += $(PWD_OUT)/VlcMusicPlayer.o
SRCS := $(PWD_SRC)/vlc_demo.cpp
SRCS += $(PWD_SRC)/VlcMusicPlayer.cpp
TARGET = demo_vlc_app
$(TARGET):$(OBJS)
$(CXX) $(CFLAGS) -o $(TARGET) $(OBJS) -L$(CSO_PWD) $(libname1) $(CICLUDES_PWD)
@echo "=======finish========="
$(PWD_OUT)/%.o:%.cpp
$(CXX) $(CFLAGS) -c $(SRCS) $(CICLUDES_PWD)
clean:
rm $(OBJS) $(TARGET) -rf
@echo "=============clean ok========"