public PhotoContent CreateTimelapse(int[] photoContentIds, PhotoTimelapseOptions options)
{
var photos = _aquariumDao.GetPhotoContentByIds(photoContentIds);
var inputFiles = "timelapse/test_%d.jpg";
var fileName = "ffmpeg/ffmpeg.exe";
var output = $"test.{options.FileType}";
List <string> fileCleanup = new List <string>();
try
{
if (File.Exists(output))
{
File.Delete(output);
}
//Verify directory exists
var dir = Path.GetDirectoryName(inputFiles);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
//Load all requested images
var i = 0;
photos.ForEach(c =>
{
var filePath = inputFiles.Replace("%d", i.ToString());
File.WriteAllBytes(filePath, _azureService.GetFileFromStorageContainer(c.Filepath).Result);
fileCleanup.Add(filePath);
i++;
});
//Launch batch process
var arguments = $"-f image2 -framerate {options.Framerate} -start_number 1 -i {inputFiles} -s {options.Width}x{options.Height} {output}";
var p = new Process();
p.StartInfo.CreateNoWindow = true;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.FileName = fileName;
p.StartInfo.Arguments = arguments;
p.Start();
var stdOutput = p.StandardOutput.ReadToEnd();
var errOutput = p.StandardError.ReadToEnd();
p.WaitForExit();
//Verify file exists
if (!File.Exists(output))
{
throw new Exception($"Command Process Failed with the following output:\n" +
$"Standard Output: {stdOutput}\n" +
$"Error Output: {errOutput}"
);
}
else
{
fileCleanup.Add(output);
}
//Store the file in azure
var path = $"{_config["Photos:Path"]}/timelapse-" + DateTime.UtcNow.Ticks + $".{options.FileType}";
var content = _aquariumDao.CreatePhotoReference();
content.Date = DateTime.UtcNow;
content.Filepath = path;
content.Exists = true;
_azureService.UploadFileToStorageContainer(File.ReadAllBytes(output), path).Wait();
if (_azureService.ExistsInStorageContainer(path))
{
_aquariumDao.UpdatePhotoReference(content);
}
return(content);
}
catch (Exception e)
{
throw e;
}
finally
{
fileCleanup.ForEach(file =>
{
File.Delete(file);
});
}
}
