private void handleCombineVideos(
HttpServletRequest request, HttpServletResponse response, HttpSession session, String json)
throws IOException, NoSuchAlgorithmException, InvalidFileSizeException, ServiceException,
InterruptedException {
int projectId = getProjectIdFromSessionAttributes(session);
String[] videos = DatabaseApi.getVideosOnTimeline(projectId);
String format = request.getParameter("output-extension");
log.info("Combining Videos, if necessary");
if (videos.length == 0) {
response.sendRedirect("editor.jsp");
} else {
String[] videoURLs = new String[videos.length];
for (int i = 0; i < videos.length; i++) {
videoURLs[i] = DatabaseApi.getVideoUrl(DatabaseApi.getVideoId(videos[i], projectId));
}
String combinedURL = "";
if (videoURLs.length == 1) {
combinedURL = S3Api.downloadVideosToTemp(videoURLs[0]);
} else if (videoURLs.length > 1) {
combinedURL = Combiner.combineVideos(videoURLs, videos, tempDir);
}
if (combinedURL == null) {
response.sendRedirect("editor.jsp");
return;
}
log.info("Now converting, if necessary");
File file = new File(combinedURL);
String ext = ".ogv";
String converted = "";
if (!format.equals("ogv")) {
if (format.equals("avi")) {
ext = ".avi";
} else if (format.equals("wmv")) {
ext = ".wmv";
} else if (format.equals("mp4")) {
ext = ".mp4";
}
converted = Combiner.convertTo(format, file, tempDir);
file = new File(tempDir + "/" + converted);
}
log.info("Now Dowloading");
final ServletOutputStream out = response.getOutputStream();
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename=combinedVideo" + ext);
BufferedInputStream is = new BufferedInputStream(new FileInputStream(file));
byte[] buf = new byte[4 * 1024]; // 4K buffer
int bytesRead;
while ((bytesRead = is.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
is.close();
out.flush();
out.close();
file.delete();
log.info("Downloaded. End of handleCombinedVideos");
}
}
