Examples with ProcessInfo org.opencastproject.util.ProcessRunner.ProcessInfo used on opensource projects

Example 1 with ProcessInfo

use of org.opencastproject.util.ProcessRunner.ProcessInfo in project opencast by opencast.

the class FFmpegAnalyzer method analyze.

@Override
public MediaContainerMetadata analyze(File media) throws MediaAnalyzerException {
    if (binary == null)
        throw new IllegalStateException("Binary is not set");
    List<String> command = new ArrayList<>();
    command.add("-show_format");
    command.add("-show_streams");
    if (accurateFrameCount)
        command.add("-count_frames");
    command.add("-of");
    command.add("json");
    command.add(media.getAbsolutePath().replaceAll(" ", "\\ "));
    String commandline = StringUtils.join(command, " ");
    /* Execute ffprobe and obtain the result */
    logger.debug("Running {} {}", binary, commandline);
    MediaContainerMetadata metadata = new MediaContainerMetadata();
    final StringBuilder sb = new StringBuilder();
    try {
        ProcessInfo info = ProcessRunner.mk(binary, command.toArray(new String[command.size()]));
        int exitCode = ProcessRunner.run(info, new Pred<String>() {

            @Override
            public Boolean apply(String s) {
                logger.debug(s);
                sb.append(s);
                sb.append(System.getProperty("line.separator"));
                return true;
            }
        }, fnLogError);
        // Windows binary will return -1 when queried for options
        if (exitCode != -1 && exitCode != 0 && exitCode != 255)
            throw new MediaAnalyzerException("Frame analyzer " + binary + " exited with code " + exitCode);
    } catch (IOException e) {
        logger.error("Error executing ffprobe: {}", ExceptionUtils.getStackTrace(e));
        throw new MediaAnalyzerException("Error while running ffprobe " + binary, e);
    }
    JSONParser parser = new JSONParser();
    try {
        JSONObject jsonObject = (JSONObject) parser.parse(sb.toString());
        Object obj;
        Double duration;
        /* Get format specific stuff */
        JSONObject jsonFormat = (JSONObject) jsonObject.get("format");
        /* File Name */
        obj = jsonFormat.get("filename");
        if (obj != null) {
            metadata.setFileName((String) obj);
        }
        /* Format */
        obj = jsonFormat.get("format_long_name");
        if (obj != null) {
            metadata.setFormat((String) obj);
        }
        /*
       * Mediainfo does not return a duration if there is no stream but FFprobe will return 0. For compatibility
       * reasons, check if there are any streams before reading the duration:
       */
        obj = jsonFormat.get("nb_streams");
        if (obj != null && (Long) obj > 0) {
            obj = jsonFormat.get("duration");
            if (obj != null) {
                duration = new Double((String) obj) * 1000;
                metadata.setDuration(duration.longValue());
            }
        }
        /* File Size */
        obj = jsonFormat.get("size");
        if (obj != null) {
            metadata.setSize(new Long((String) obj));
        }
        /* Bitrate */
        obj = jsonFormat.get("bit_rate");
        if (obj != null) {
            metadata.setBitRate(new Float((String) obj));
        }
        /* Loop through streams */
        /*
       * FFprobe will return an empty stream array if there are no streams. Thus we do not need to check.
       */
        JSONArray streams = (JSONArray) jsonObject.get("streams");
        Iterator<JSONObject> iterator = streams.iterator();
        while (iterator.hasNext()) {
            JSONObject stream = iterator.next();
            /* Check type of string */
            String codecType = (String) stream.get("codec_type");
            if ("audio".equals(codecType)) {
                /* Extract audio stream metadata */
                AudioStreamMetadata aMetadata = new AudioStreamMetadata();
                /* Codec */
                obj = stream.get("codec_long_name");
                if (obj != null) {
                    aMetadata.setFormat((String) obj);
                }
                /* Duration */
                obj = stream.get("duration");
                if (obj != null) {
                    duration = new Double((String) obj) * 1000;
                    aMetadata.setDuration(duration.longValue());
                } else {
                    /*
             * If no duration for this stream is specified assume the duration of the file for this as well.
             */
                    aMetadata.setDuration(metadata.getDuration());
                }
                /* Bitrate */
                obj = stream.get("bit_rate");
                if (obj != null) {
                    aMetadata.setBitRate(new Float((String) obj));
                }
                /* Channels */
                obj = stream.get("channels");
                if (obj != null) {
                    aMetadata.setChannels(((Long) obj).intValue());
                }
                /* Sample Rate */
                obj = stream.get("sample_rate");
                if (obj != null) {
                    aMetadata.setSamplingRate(Integer.parseInt((String) obj));
                }
                /* Frame Count */
                obj = stream.get("nb_read_frames");
                if (obj != null) {
                    aMetadata.setFrames(Long.parseLong((String) obj));
                } else {
                    /* alternate JSON element if accurate frame count is not requested from ffmpeg */
                    obj = stream.get("nb_frames");
                    if (obj != null) {
                        aMetadata.setFrames(Long.parseLong((String) obj));
                    }
                }
                /* Add video stream metadata to overall metadata */
                metadata.getAudioStreamMetadata().add(aMetadata);
            /* Handle video streams ----------------------------- */
            } else if ("video".equals(codecType)) {
                /* Extract video stream metadata */
                VideoStreamMetadata vMetadata = new VideoStreamMetadata();
                /* Codec */
                obj = stream.get("codec_long_name");
                if (obj != null) {
                    vMetadata.setFormat((String) obj);
                }
                /* Duration */
                obj = stream.get("duration");
                if (obj != null) {
                    duration = new Double((String) obj) * 1000;
                    vMetadata.setDuration(duration.longValue());
                } else {
                    /*
             * If no duration for this stream is specified assume the duration of the file for this as well.
             */
                    vMetadata.setDuration(metadata.getDuration());
                }
                /* Bitrate */
                obj = stream.get("bit_rate");
                if (obj != null) {
                    vMetadata.setBitRate(new Float((String) obj));
                }
                /* Width */
                obj = stream.get("width");
                if (obj != null) {
                    vMetadata.setFrameWidth(((Long) obj).intValue());
                }
                /* Height */
                obj = stream.get("height");
                if (obj != null) {
                    vMetadata.setFrameHeight(((Long) obj).intValue());
                }
                /* Profile */
                obj = stream.get("profile");
                if (obj != null) {
                    vMetadata.setFormatProfile((String) obj);
                }
                /* Aspect Ratio */
                obj = stream.get("sample_aspect_ratio");
                if (obj != null) {
                    vMetadata.setPixelAspectRatio(parseFloat((String) obj));
                }
                /* Frame Rate */
                obj = stream.get("avg_frame_rate");
                if (obj != null) {
                    vMetadata.setFrameRate(parseFloat((String) obj));
                }
                /* Frame Count */
                obj = stream.get("nb_read_frames");
                if (obj != null) {
                    vMetadata.setFrames(Long.parseLong((String) obj));
                } else {
                    /* alternate JSON element if accurate frame count is not requested from ffmpeg */
                    obj = stream.get("nb_frames");
                    if (obj != null) {
                        vMetadata.setFrames(Long.parseLong((String) obj));
                    }
                }
                /* Add video stream metadata to overall metadata */
                metadata.getVideoStreamMetadata().add(vMetadata);
            }
        }
    } catch (ParseException e) {
        logger.error("Error parsing ffprobe output: {}", e.getMessage());
    }
    return metadata;
}