private void BackgroundWorkerDoWork(object sender, DoWorkEventArgs e)
{
JobItem jobItem = (JobItem)e.Argument;
try
{
// 预先的检查与错误处理
if (jobItem.JobConfig.VideoMode == StreamProcessMode.None && jobItem.JobConfig.AudioMode == StreamProcessMode.None)
{
this.SetJobEventAndReportProgress(jobItem, JobEvent.Error);
MessageBox.Show(jobItem.SourceFile + "\n源文件不是视频文件，或设置有错误。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (MyIO.Exists(jobItem.DestFile) && !jobItem.UserConfirmedOverwriteFile)
{
if (MessageBox.Show(jobItem.DestFile + "\n目标文件已存在。决定覆盖吗？", "文件已存在", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
jobItem.UserConfirmedOverwriteFile = true;
}
else
{
this.SetJobEventAndReportProgress(jobItem, JobEvent.OneJobItemCancelled);
return;
}
}
// 工作过程
this.SetJobEventAndReportProgress(jobItem, JobEvent.OneJobItemProcessing);
if (jobItem.JobConfig.VideoMode == StreamProcessMode.Encode)
{
if (this.EncodeVideo(jobItem, e) == false)
{
return;
}
}
if (jobItem.JobConfig.AudioMode == StreamProcessMode.Encode)
{
if (this.EncodeAudio(jobItem, e) == false)
{
return;
}
}
if (jobItem.MuxingInfo != null)
{
if (this.Mux(jobItem, e) == false)
{
return;
}
}
if (jobItem.State != JobState.Error)
{
this.SetJobEventAndReportProgress(jobItem, JobEvent.OneJobItemDone);
}
}
catch (Exception exception)
{
MessageBox.Show("发生了一个错误。\n" + exception.ToString(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.SetJobEventAndReportProgress(jobItem, JobEvent.Error);
}
finally
{
jobItem.ClearTempFiles();
if (this.workingJobItems[this.workingJobItems.Count - 1] == jobItem)
{
this.SetJobEventAndReportProgress(jobItem, JobEvent.AllDone);
}
e.Result = jobItem;
}
}
