cpi_player_callbacks.c

VC++视频开发实例集锦(包括“远程视频监控”"语音识别系统"等13个经典例子)

#include "stdafx.h"
#include "globals.h"
#include "CPI_Player.h"
#include "CPI_Playlist.h"
#include "CPI_PlaylistItem.h"

#define CP_SYNCCOOKIE_DESTROY						301

void CPI_Player_cb_OnStreamInfo(CP_HPLAYER hPlayer, const CPs_FileInfo* pInfo)
{
    globals.main_long_track_duration = pInfo->m_iFileLength_Secs;

    if(pInfo->m_iBitRate_Kbs)
        _itoa(pInfo->m_iBitRate_Kbs, globals.main_text_bitrate, 10);
    else
        globals.main_text_bitrate[0] = '\0';

    if(pInfo->m_iFreq_Hz)
        _itoa(pInfo->m_iFreq_Hz / 1000, globals.main_text_frequency, 10);
    else
        globals.main_text_frequency[0] = '\0';

    main_draw_bitrate(windows.wnd_main);
    main_draw_frequency(windows.wnd_main);
}
//
void CPI_Player_cb_OnStreamOffset_Secs(CP_HPLAYER hPlayer, const int iTrackElapsedSeconds)
{
    globals.main_int_track_total_seconds = iTrackElapsedSeconds;
    main_draw_time(windows.wnd_main);
}
//
void CPI_Player_cb_OnStreamOffset_Range(CP_HPLAYER hPlayer, const int iTrackElapsed_Range)
{
    globals.main_int_track_position = iTrackElapsed_Range;
    if(globals.m_bStreaming == TRUE)
        main_draw_vu_from_value(windows.wnd_main, PositionSlider, globals.m_iStreamingPortion);
    else
        main_draw_vu_from_value(windows.wnd_main, PositionSlider, globals.main_int_track_position);
}
//
void CPI_Player_cb_OnPlayerState(CP_HPLAYER hPlayer, const CPe_PlayerState enPlayerState)
{
    switch(enPlayerState)
    {
    case cppsEndOfStream:
        {
            CP_HPLAYLISTITEM hCurrent = CPL_GetActiveItem(globals.m_hPlaylist);

            if(options.repeat_playlist == FALSE
                    && options.shuffle_play == FALSE
                    && (hCurrent == NULL || CPLI_Next(hCurrent) == NULL) )
            {
                CPI_Player__BlockMessagesUntilEndOfStream(hPlayer);
                if(options.auto_exit_after_playing == TRUE)
                    CPI_Player__SendSyncCookie(hPlayer, CP_SYNCCOOKIE_DESTROY);
            }
            else
            {
                if(options.seconds_delay_after_track > 0)
                    SetTimer(windows.wnd_main, CPC_TIMERID_INTERTRACKDELAY, 2000 + (options.seconds_delay_after_track * 1000), NULL);
                else
                    CPL_PlayItem(globals.m_hPlaylist, FALSE, pmNextItem);
            }
        }
        break;

    case cppsPlaying:
    case cppsPaused:
        globals.m_enPlayerState = enPlayerState;
        main_draw_controls_all(windows.wnd_main);
        break;

    case cppsStopped:
        globals.m_enPlayerState = enPlayerState;

        memset(globals.main_text_bitrate, 0, sizeof(globals.main_text_bitrate));
        memset(globals.main_text_frequency, 0, sizeof(globals.main_text_frequency));
        main_draw_bitrate(windows.wnd_main);
        main_draw_frequency(windows.wnd_main);

        globals.main_int_track_total_seconds = 0;
        main_draw_time(windows.wnd_main);

        globals.main_int_track_position = 0;
        main_draw_vu_from_value(windows.wnd_main, PositionSlider, globals.main_int_track_position);

        main_draw_controls_all(windows.wnd_main);
        break;

    }
}
//
void CPI_Player_cb_OnSyncCookie(CP_HPLAYER hPlayer, const int iCookie)
{
    if(iCookie == CP_SYNCCOOKIE_DESTROY)
        DestroyWindow(windows.wnd_main);
}
//
void CPI_Player_cb_OnVolumeChange(CP_HPLAYER hPlayer, const int iNewVolume)
{
    globals.m_iVolume = iNewVolume;
    main_draw_vu_from_value(windows.wnd_main, VolumeSlider, iNewVolume);
}
//
void CPI_Player_cb_OnStreamStateChange(CP_HPLAYER hPlayer, const BOOL bStreaming, const int iBufferUsagePercent)
{
    const int iRange = Skin.Object[PositionSlider].maxw ? Skin.Object[PositionSlider].h : Skin.Object[PositionSlider].w;

    globals.m_bStreaming = bStreaming;
    if(iRange)
        globals.m_iStreamingPortion = (iBufferUsagePercent * iRange) / 100;
    else
        globals.m_iStreamingPortion = 0;
    main_draw_vu_from_value(windows.wnd_main, PositionSlider, globals.m_iStreamingPortion);
}
//
void CPI_Player_cb_OnEnumOutputDevice(CP_HPLAYER hPlayer, const char* pcDeviceName, const int iDeviceID)
{
    int iNewDeviceIDX;

    iNewDeviceIDX =	SendDlgItemMessage(windows.dlg_options, IDC_OUTPUT, CB_ADDSTRING, 0, (LPARAM)pcDeviceName);
    SendDlgItemMessage(windows.dlg_options, IDC_OUTPUT, CB_SETITEMDATA, iNewDeviceIDX - 1, MAKELPARAM(iDeviceID,iDeviceID));

    SendDlgItemMessage(windows.dlg_options, IDC_OUTPUT, CB_SETCURSEL, options.decoder_output_mode, 0);
}