public bool EnumerateAudioSources()
{
try
{
WMEncoder Encoder = new WMEncoder();
// Retrieve source and device plug-in info manager objects from WMEncoder.
IWMEncSourcePluginInfoManager SrcPlugMgr = Encoder.SourcePluginInfoManager;
IWMEncDeviceControlPluginInfoManager DCPlugMgr = Encoder.DeviceControlPluginInfoManager;
// Loop through all the audio and video devices on the system.
IWMEncPluginInfo PlugInfo;
for (int i = 0; i < SrcPlugMgr.Count; i++)
{
// Set the IWMEncPluginInfo object to the current plug-in.
PlugInfo = SrcPlugMgr.Item(i);
// Find the device plug-ins that support resources.
if (PlugInfo.SchemeType == "DEVICE" && PlugInfo.Resources == true)
{
// Loop through the resources in the current plug-in.
for (int j = 0; j < PlugInfo.Count; j++)
{
//if(frm_Rec.chkAudio.Checked==true)
{
// Add audio resources to the cboAudioSource combo box.
if (PlugInfo.MediaType == WMENC_SOURCE_TYPE.WMENC_AUDIO)
{
m_sourceEnumDlg.audioSources.Items.Add(PlugInfo.Item(j));
}
}
}
}
}
}
catch (Exception exp)
{
WebMeeting.Client.ClientUI.getInstance().ShowExceptionMessage("Video Recordong Module ===>Screen Capture.cs line==> 147", exp, "Error Enumeration Audio Resources: " + exp.Message.ToString(), true);
//WebMeeting.Client.ClientUI.getInstance().ShowExceptionMessage("Error Stoping encoder: " + exp.Message.ToString());
//Trace.WriteLine(exp.ToString()+"---"+exp.Message+"---"+exp.Source+exp.StackTrace+"---"+exp.TargetSite+"---"+exp.InnerException);
}
//DialogResult ret = m_sourceEnumDlg.ShowDialog();
//if( ret == DialogResult.Cancel)
// return false;
//m_szAudioSource = m_sourceEnumDlg.selectedItem;
m_szAudioSource = config.Read("Driver");
return(true);
}
/**
* Get available sources of specified type.
* @param type : Source type.
* @return list of available sources. This sources can be selected by SetSource(...) method.
*/
public static IList <string> GetSources(ESourceType type)
{
System.Collections.Generic.IList <string> sources = new System.Collections.Generic.List <string>();
try
{
WMEncoderClass encoder = new WMEncoderClass();
IWMEncSourcePluginInfoManager srcPlugMgr = encoder.SourcePluginInfoManager;
IWMEncPluginInfo plugInfo;
for (int i = 0; i < srcPlugMgr.Count; i++)
{
plugInfo = srcPlugMgr.Item(i);
if (type == ESourceType.DesktopVideo &&
plugInfo.SchemeType == "ScreenCap" &&
plugInfo.MediaType == WMENC_SOURCE_TYPE.WMENC_VIDEO)
{
log.Debug(type + " source -->" + plugInfo.Name);
sources.Add(plugInfo.Name);
}
else
{
if (plugInfo.SchemeType == "DEVICE" && plugInfo.Resources == true)
{
for (int j = 0; j < plugInfo.Count; j++)
{
if (plugInfo.MediaType == WMENC_SOURCE_TYPE.WMENC_AUDIO &&
type == ESourceType.DeviceAudio)
{
log.Debug(type + " source(" + j + ") -->" + plugInfo.Item(j));
sources.Add(plugInfo.Item(j));
}
if (plugInfo.MediaType == WMENC_SOURCE_TYPE.WMENC_VIDEO &&
type == ESourceType.DeviceVideo)
{
log.Debug(type + " source(" + j + ") -->" + plugInfo.Item(j));
sources.Add(plugInfo.Item(j));
}
}
}
}
}
}
catch (Exception e)
{
log.ErrorException("Exception retrieving sources", e);
sources = null;
}
return(sources);
}
public frm_AudioConfig()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
btn_Previous.Enabled = false;
btn_Finish.Enabled = false;
// Create a WMEncoder object.
WMEncoder Encoder = new WMEncoder();
// Retrieve source and device plug-in info manager objects from WMEncoder.
IWMEncSourcePluginInfoManager SrcPlugMgr = Encoder.SourcePluginInfoManager;
IWMEncDeviceControlPluginInfoManager DCPlugMgr = Encoder.DeviceControlPluginInfoManager;
// Loop through all the audio and video devices on the system.
for (int i = 0; i < SrcPlugMgr.Count; i++)
{
// Set the IWMEncPluginInfo object to the current plug-in.
PlugInfo = SrcPlugMgr.Item(i);
// Find the device plug-ins that support resources.
if (PlugInfo.SchemeType == "DEVICE" && PlugInfo.Resources == true)
{
// Loop through the resources in the current plug-in.
for (int j = 0; j < PlugInfo.Count; j++)
{
// Add audio resources to the cboAudioSource combo box.
if (PlugInfo.MediaType == WMENC_SOURCE_TYPE.WMENC_AUDIO)
{
cboAudioSource.Items.Add(PlugInfo.Item(j));
}
}
}
}
cboAudioSource.SelectedIndex = 0;
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// 开始录制
/// </summary>
/// <param name="mediaInfo"></param>
/// <param name="captureArea">捕获区域（录制的区域）</param>
internal override void Start(MediaInfo mediaInfo, ScreenArea captureArea)
{
// 设置一些必要的变量
IWMEncSourceGroupCollection sourceGroupCollection;
IWMEncSourceGroup2 sourceGroup;
IWMEncAudioSource audioSource;
IWMEncVideoSource2 vedioSource;
//IWMEncProfile2 Pro;
sourceGroupCollection = encoder.SourceGroupCollection;
sourceGroup = (IWMEncSourceGroup2)sourceGroupCollection.Add("SG_1");
// 假如 是仅音频，或者是 音频视频 全有，则添加音频设备，并进行相关设置
if (mediaInfo.AudioVedio == AudioVedioType.AudioOnly || mediaInfo.AudioVedio == AudioVedioType.Both)
{
audioSource = (IWMEncAudioSource)sourceGroup.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
audioSource.SetInput("Default_Audio_Device", "DEVICE", "");
}
// 假如 是仅视频，或者是 音频视频 全有，则添加视频设备
if (mediaInfo.AudioVedio == AudioVedioType.VedioOnly || mediaInfo.AudioVedio == AudioVedioType.Both)
{
vedioSource = (IWMEncVideoSource2)sourceGroup.AddSource(WMENC_SOURCE_TYPE.WMENC_VIDEO);
vedioSource.SetInput("ScreenCapture1", "ScreenCap", "");
// 视频尺寸/显示器尺寸 缩放比
Size screenSize = SystemInformation.PrimaryMonitorSize;
float scaleX = (float)vedioSource.Height / (float)screenSize.Height;
float scaleY = (float)vedioSource.Width / (float)screenSize.Width;
// 设置左边和上部剪裁区
vedioSource.CroppingLeftMargin = (int)((float)captureArea.X * scaleY);
vedioSource.CroppingTopMargin = (int)((float)captureArea.Y * scaleX);
// 设置右边和下部剪裁区
int bottomMargin = screenSize.Height - captureArea.Height - captureArea.Y;
int rightMargin = screenSize.Width - captureArea.Weight - captureArea.X;
vedioSource.CroppingRightMargin = (int)((float)bottomMargin * scaleY);
vedioSource.CroppingBottomMargin = (int)((float)rightMargin * scaleX);
}
// 设置压缩方式
// 首先必须刷新一下信息
IWMEncSourcePluginInfoManager sourcePluginInfoManager = encoder.SourcePluginInfoManager;
sourcePluginInfoManager.Refresh();
IWMEncProfileCollection wpfc = encoder.ProfileCollection;
// 将压缩方式的名称添加进 profileNames 变量,将压缩方式对象本身添加到profiles 变量
for (int i = 0; i < wpfc.Count; i++)
{
if (mediaInfo.ProfileName == wpfc.Item(i).Name)
{
sourceGroup.set_Profile(wpfc.Item(i));
break;
}
}
// 设置存放位置
encoder.File.LocalFileName = mediaInfo.SavePath;
// 启动
encoder.Start();
}
public override Hashtable GetProfileInfos()
{
// 先清空
profileInfos.Clear();
// 声明必要变量
IWMEncSourcePluginInfoManager sourceGroupCollection = encoder.SourcePluginInfoManager;
IWMEncProfileCollection profileCollection = encoder.ProfileCollection;
IWMEncProfile2 profile2 = new WMEncProfile2Class();
// 刷新
sourceGroupCollection.Refresh();
// 将所有压缩方式的相关信息 依次存入 profileInfos（Hashtable）。
for (int i = 0; i < profileCollection.Count; i++)
{
// 利用wp2获取压缩方式的相关信息
profile2.LoadFromIWMProfile((IWMEncProfile)profileCollection.Item(i));
// 获取压缩方式的相关描述
StringBuilder profileInfo = new StringBuilder();
profileInfo.AppendLine(profileCollection.Item(i).Description);
for (int j = 0; j < profile2.AudienceCount; j++)
{
IWMEncAudienceObj audienceObj = profile2.get_Audience(j);
// 假如此听众处于被选中状态
if (audienceObj.Selected)
{
object audioCodecName = null;
object videoCodecName = null;
try
{
// 得到音频编码名称
int audioCodecIndex = audienceObj.get_AudioCodec(0);
profile2.EnumAudioCodec(audioCodecIndex, out audioCodecName);
// 得到视频编码名称
int videoCodecIndex = audienceObj.get_VideoCodec(0);
profile2.EnumVideoCodec(videoCodecIndex, out videoCodecName);
}
catch
{
}
// 假如音频编码名称不为NULL
if (audioCodecName != null)
{
profileInfo.AppendLine("音频编码：" + audioCodecName.ToString());
}
// // 假如频编码名称不为NULL
if (videoCodecName != null)
{
profileInfo.AppendLine("视频编码：" + videoCodecName.ToString());
profileInfo.AppendLine("视频高度：" + Convert.ToString(audienceObj.get_VideoHeight(0)) + "\t视频宽度：" + Convert.ToString(audienceObj.get_VideoWidth(0)));
}
}
}
profileInfos.Add(profileCollection.Item(i).Name, profileInfo.ToString());
}
return(profileInfos);
}
