Merge branch 'feature/upstream' into develop

1 files changed, 0 insertions, 655 deletions

diff --git a/src/VideoMetadata.vala b/src/VideoMetadata.vala
deleted file mode 100644
index 49ba8ef..0000000
--- a/src/VideoMetadata.vala
+++ /dev/null
@@ -1,655 +0,0 @@
-/* Copyright 2016 Software Freedom Conservancy Inc.
- *
- * This software is licensed under the GNU Lesser General Public License
- * (version 2.1 or later).  See the COPYING file in this distribution.
- */
-
-public class VideoMetadata : MediaMetadata {
-    
-    private MetadataDateTime timestamp = null;
-    private string title = null;
-    private string comment = null;
-   
-    public VideoMetadata() {
-    }
-    
-    ~VideoMetadata() {
-    }
-    
-    public override void read_from_file(File file) throws Error {
-        QuickTimeMetadataLoader quicktime = new QuickTimeMetadataLoader(file);
-        if (quicktime.is_supported()) {
-            timestamp = quicktime.get_creation_date_time();
-            title = quicktime.get_title();
-	        // TODO: is there an quicktime.get_comment ??
-            comment = null;
-            return;
-        }    
-        AVIMetadataLoader avi = new AVIMetadataLoader(file);
-        if (avi.is_supported()) {
-            timestamp = avi.get_creation_date_time();
-            title = avi.get_title();
-            comment = null;
-            return;
-        }
-        
-        throw new IOError.NOT_SUPPORTED("File %s is not a supported video format", file.get_path());
-    }
-    
-    public override MetadataDateTime? get_creation_date_time() {
-        return timestamp;
-    }
-    
-    public override string? get_title() {
-        return title;
-    }
-    
-    public override string? get_comment() {
-        return comment;
-    }
-    
-}
-
-private class QuickTimeMetadataLoader {
-
-    // Quicktime calendar date/time format is number of seconds since January 1, 1904.
-    // This converts to UNIX time (66 years + 17 leap days).
-    public const time_t QUICKTIME_EPOCH_ADJUSTMENT = 2082844800;
-
-    private File file = null;
-
-    public QuickTimeMetadataLoader(File file) {
-        this.file = file;
-    }
-    
-    public MetadataDateTime? get_creation_date_time() {
-        return new MetadataDateTime((time_t) get_creation_date_time_for_quicktime());
-    }
-    
-    public string? get_title() {
-        // Not supported.
-        return null;
-    }
-
-    // Checks if the given file is a QuickTime file.
-    public bool is_supported() {
-        QuickTimeAtom test = new QuickTimeAtom(file);
-        
-        bool ret = false;
-        try {
-            test.open_file();
-            test.read_atom();
-            
-            // Look for the header.
-            if ("ftyp" == test.get_current_atom_name()) {
-                ret = true;
-            } else {
-                // Some versions of QuickTime don't have
-                // an ftyp section, so we'll just look
-                // for the mandatory moov section.
-                while(true) {
-                    if ("moov" == test.get_current_atom_name()) {
-                        ret = true;
-                        break;
-                    }
-                    test.next_atom();
-                    test.read_atom();
-                    if (test.is_last_atom()) {
-                        break;
-                    }
-                }
-            }
-        } catch (GLib.Error e) {
-            debug("Error while testing for QuickTime file for %s: %s", file.get_path(), e.message);
-        }
-        
-        try {
-            test.close_file();
-        } catch (GLib.Error e) {
-            debug("Error while closing Quicktime file: %s", e.message);
-        }
-        return ret;
-    }
-
-    private ulong get_creation_date_time_for_quicktime() {
-        QuickTimeAtom test = new QuickTimeAtom(file);
-        time_t timestamp = 0;
-        
-        try {
-            test.open_file();
-            bool done = false;
-            while(!done) {
-                // Look for "moov" section.
-                test.read_atom();
-                if (test.is_last_atom()) break;
-                if ("moov" == test.get_current_atom_name()) {
-                    QuickTimeAtom child = test.get_first_child_atom();
-                    while (!done) {
-                        // Look for "mvhd" section, or break if none is found.
-                        child.read_atom();
-                        if (child.is_last_atom() || 0 == child.section_size_remaining()) {
-                            done = true;
-                            break;
-                        }
-                        
-                        if ("mvhd" == child.get_current_atom_name()) {
-                            // Skip 4 bytes (version + flags)
-                            child.read_uint32();
-                            // Grab the timestamp.
-                            timestamp = child.read_uint32() - QUICKTIME_EPOCH_ADJUSTMENT;
-                            done = true;
-                            break;
-                        }
-                        child.next_atom();
-                    }
-                }
-                test.next_atom();
-            }
-        } catch (GLib.Error e) {
-            debug("Error while testing for QuickTime file: %s", e.message);
-        }
-        
-        try {
-            test.close_file();
-        } catch (GLib.Error e) {
-            debug("Error while closing Quicktime file: %s", e.message);
-        }
-        
-        // Some Android phones package videos recorded with their internal cameras in a 3GP
-        // container that looks suspiciously like a QuickTime container but really isn't -- for
-        // the timestamps of these Android 3GP videos are relative to the UNIX epoch
-        // (January 1, 1970) instead of the QuickTime epoch (January 1, 1904). So, if we detect a
-        // QuickTime movie with a negative timestamp, we can be pretty sure it isn't a valid
-        // QuickTime movie that was shot before 1904 but is instead a non-compliant 3GP video
-        // file. If we detect such a video, we correct its time. See this Redmine ticket
-        // (http://redmine.yorba.org/issues/3314) for more information.
-        if (timestamp < 0)
-            timestamp += QUICKTIME_EPOCH_ADJUSTMENT;
-        
-        return (ulong) timestamp;
-    }
-}
-
-private class QuickTimeAtom {
-    private GLib.File file = null;
-    private string section_name = "";
-    private uint64 section_size = 0;
-    private uint64 section_offset = 0;
-    private GLib.DataInputStream input = null;
-    private QuickTimeAtom? parent = null;
-    
-    public QuickTimeAtom(GLib.File file) {
-        this.file = file;
-    }
-    
-    private QuickTimeAtom.with_input_stream(GLib.DataInputStream input, QuickTimeAtom parent) {
-        this.input = input;
-        this.parent = parent;
-    }
-    
-    public void open_file() throws GLib.Error {
-        close_file();
-        input = new GLib.DataInputStream(file.read());
-        input.set_byte_order(DataStreamByteOrder.BIG_ENDIAN);
-        section_size = 0;
-        section_offset = 0;
-        section_name = "";
-    }
-    
-    public void close_file() throws GLib.Error {
-        if (null != input) {
-            input.close();
-            input = null;
-        }
-    }
-    
-    private void advance_section_offset(uint64 amount) {
-        section_offset += amount;
-        if (null != parent) {
-            parent.advance_section_offset(amount);
-        }
-    }
-    
-    public QuickTimeAtom get_first_child_atom() {
-        // Child will simply have the input stream
-        // but not the size/offset.  This works because
-        // child atoms follow immediately after a header,
-        // so no skipping is required to access the child
-        // from the current position.
-        return new QuickTimeAtom.with_input_stream(input, this);
-    }
-    
-    public uchar read_byte() throws GLib.Error {
-        advance_section_offset(1);
-        return input.read_byte();
-    }
-    
-    public uint32 read_uint32() throws GLib.Error {
-        advance_section_offset(4);
-        return input.read_uint32();
-    }
-    
-    public uint64 read_uint64() throws GLib.Error {
-        advance_section_offset(8);
-        return input.read_uint64();
-    }
-
-    public void read_atom() throws GLib.Error {
-        // Read atom size.
-        section_size = read_uint32();
-        
-        // Read atom name.
-        GLib.StringBuilder sb = new GLib.StringBuilder();
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        section_name = sb.str;
-        
-        // Check string.
-        if (section_name.length != 4) {
-            throw new IOError.NOT_SUPPORTED("QuickTime atom name length is invalid for %s", 
-                file.get_path());
-        }
-        for (int i = 0; i < section_name.length; i++) {
-            if (!section_name[i].isprint()) {
-                throw new IOError.NOT_SUPPORTED("Bad QuickTime atom in file %s", file.get_path());
-            }
-        }
-        
-        if (1 == section_size) {
-            // This indicates the section size is a 64-bit
-            // value, specified below the atom name.
-            section_size = read_uint64();
-        }
-    }
-    
-    private void skip(uint64 skip_amount) throws GLib.Error {
-        skip_uint64(input, skip_amount);
-    }
-    
-    public uint64 section_size_remaining() {
-        assert(section_size >= section_offset);
-        return section_size - section_offset;
-    }
-    
-    public void next_atom() throws GLib.Error {
-        skip(section_size_remaining());
-        section_size = 0;
-        section_offset = 0;
-    }
-    
-    public string get_current_atom_name() {
-        return section_name;
-    }
-   
-    public bool is_last_atom() {
-        return 0 == section_size;
-    }
-    
-}
-
-private class AVIMetadataLoader {
-
-    private File file = null;
-    
-    // A numerical date string, i.e 2010:01:28 14:54:25
-    private const int NUMERICAL_DATE_LENGTH = 19;
-    
-    // Marker for timestamp section in a Nikon nctg blob.
-    private const uint16 NIKON_NCTG_TIMESTAMP_MARKER = 0x13;
-    
-    // Size limit to ensure we don't parse forever on a bad file.
-    private const int MAX_STRD_LENGTH = 100;
-
-    public AVIMetadataLoader(File file) {
-        this.file = file;
-    }
-    
-    public MetadataDateTime? get_creation_date_time() {
-        return new MetadataDateTime((time_t) get_creation_date_time_for_avi());
-    }
-    
-    public string? get_title() {
-        // Not supported.
-        return null;
-    }
-
-    // Checks if the given file is an AVI file.
-    public bool is_supported() {
-        AVIChunk chunk = new AVIChunk(file);
-        bool ret = false;
-        try {
-            chunk.open_file();
-            chunk.read_chunk();
-            // Look for the header and identifier.
-            if ("RIFF" == chunk.get_current_chunk_name() &&
-                "AVI " == chunk.read_name()) {
-                ret = true;
-            }
-        } catch (GLib.Error e) {
-            debug("Error while testing for AVI file: %s", e.message);
-        }
-        
-        try {
-            chunk.close_file();
-        } catch (GLib.Error e) {
-            debug("Error while closing AVI file: %s", e.message);
-        } 
-        return ret;
-    }
-    
-    // Parses a Nikon nctg tag.  Based losely on avi_read_nikon() in FFmpeg.
-    private string read_nikon_nctg_tag(AVIChunk chunk) throws GLib.Error {
-        bool found_date = false;
-        while (chunk.section_size_remaining() > sizeof(uint16)*2) {
-            uint16 tag = chunk.read_uint16();
-            uint16 size = chunk.read_uint16();
-            if (NIKON_NCTG_TIMESTAMP_MARKER == tag) {
-                found_date = true;
-                break;
-            }
-            chunk.skip(size);
-        }
-        
-        if (found_date) {
-            // Read numerical date string, example: 2010:01:28 14:54:25
-            GLib.StringBuilder sb = new GLib.StringBuilder();
-            for (int i = 0; i < NUMERICAL_DATE_LENGTH; i++) {
-                sb.append_c((char) chunk.read_byte());
-            }
-            return sb.str;
-        }
-        return "";
-    }
-    
-    // Parses a Fujifilm strd tag. Based on information from:
-    // http://www.eden-foundation.org/products/code/film_date_stamp/index.html
-    private string read_fuji_strd_tag(AVIChunk chunk) throws GLib.Error {
-        chunk.skip(98); // Ignore 98-byte binary blob.
-        chunk.skip(8); // Ignore the string "FUJIFILM"
-        // Read until we find four colons, then two more chars.
-        int colons = 0;
-        int post_colons = 0;
-        GLib.StringBuilder sb = new GLib.StringBuilder();
-        // End of date is two chars past the fourth colon.
-        while (colons <= 4 && post_colons < 2) {
-            char c = (char) chunk.read_byte();
-            if (4 == colons) {
-                post_colons++;
-            }
-            if (':' == c) {
-                colons++;
-            }
-            if (c.isprint()) {
-                sb.append_c(c);
-            }
-            if (sb.len > MAX_STRD_LENGTH) {
-                return ""; // Give up searching.
-            }
-        }
-        
-        if (sb.str.length < NUMERICAL_DATE_LENGTH) {
-            return ""; 
-        }
-        // Date is now at the end of the string.
-        return sb.str.substring(sb.str.length - NUMERICAL_DATE_LENGTH);
-    }
-    
-    // Recursively read file until the section is found.
-    private string? read_section(AVIChunk chunk) throws GLib.Error {
-        while (true) {
-            chunk.read_chunk();
-            string name = chunk.get_current_chunk_name();
-            if ("IDIT" == name) {
-                return chunk.section_to_string();
-            } else if ("nctg" == name) {
-                return read_nikon_nctg_tag(chunk);
-            } else if ("strd" == name) {
-                return read_fuji_strd_tag(chunk);
-            }
-            
-            if ("LIST" == name) {
-                chunk.read_name(); // Read past list name.
-                string result = read_section(chunk.get_first_child_chunk());
-                if (null != result) {
-                    return result;
-                }
-            }
-            
-            if (chunk.is_last_chunk()) {
-                break;
-            }
-            chunk.next_chunk();
-        }
-        return null;
-    }
-    
-    // Parses a date from a string.
-    // Largely based on GStreamer's avi/gstavidemux.c 
-    // and the information here: 
-    // http://www.eden-foundation.org/products/code/film_date_stamp/index.html
-    private ulong parse_date(string sdate) {
-        if (sdate.length == 0) {
-            return 0;
-        }
-        
-        Date date = Date();
-        uint seconds = 0;
-        int year, month, day, hour, min, sec;
-        char weekday[4];
-        char monthstr[4];
-        
-        if (sdate[0].isdigit()) {
-            // Format is: 2005:08:17 11:42:43
-            // Format is: 2010/11/30/ 19:42
-            // Format is: 2010/11/30 19:42
-            string tmp = sdate.dup();
-            tmp.canon("0123456789 ", ' '); // strip everything but numbers and spaces
-            sec = 0;
-            int result = tmp.scanf("%d %d %d %d %d %d", out year, out month, out day, out hour, out min, out sec);
-            if(result < 5) {
-                return 0;
-            }
-            date.set_dmy((DateDay) day, (DateMonth) month, (DateYear) year);
-            seconds = sec + min * 60 + hour * 3600;
-        } else {
-            // Format is: Mon Mar  3 09:44:56 2008
-            if(7 != sdate.scanf("%3s %3s %d %d:%d:%d %d", weekday, monthstr, out day, out hour,
-                  out min, out sec, out year)) {
-                return 0; // Error
-            }
-            date.set_dmy((DateDay) day, month_from_string((string) monthstr), (DateYear) year);
-            seconds = sec + min * 60 + hour * 3600;
-        }
-        
-        Time time = Time();
-        date.to_time(out time);
-        
-        // watch for overflow (happens on quasi-bogus dates, like Year 200)
-        time_t tm = time.mktime();
-        ulong result = tm + seconds;
-        if (result < tm) {
-            debug("Overflow for timestamp in video file %s", file.get_path());
-            
-            return 0;
-        }
-        
-        return result;
-    }
-    
-    private DateMonth month_from_string(string s) {
-        switch (s.down()) {
-        case "jan":
-            return DateMonth.JANUARY;
-        case "feb":
-            return DateMonth.FEBRUARY;
-        case "mar":
-            return DateMonth.MARCH;
-        case "apr":
-            return DateMonth.APRIL;
-        case "may":
-            return DateMonth.MAY;
-        case "jun":
-            return DateMonth.JUNE;
-        case "jul":
-            return DateMonth.JULY;
-        case "aug":
-            return DateMonth.AUGUST;
-        case "sep":
-            return DateMonth.SEPTEMBER;
-        case "oct":
-            return DateMonth.OCTOBER;
-        case "nov":
-            return DateMonth.NOVEMBER;
-        case "dec":
-            return DateMonth.DECEMBER;
-        }
-        return DateMonth.BAD_MONTH;
-    }
-
-    private ulong get_creation_date_time_for_avi() {
-        AVIChunk chunk = new AVIChunk(file);
-        ulong timestamp = 0;
-        try {
-            chunk.open_file();
-            chunk.nonsection_skip(12); // Advance past 12 byte header.
-            string sdate = read_section(chunk);
-            if (null != sdate) {
-                timestamp = parse_date(sdate.strip());
-            }
-        } catch (GLib.Error e) {
-            debug("Error while reading AVI file: %s", e.message);
-        }
-        
-        try {
-            chunk.close_file();
-        } catch (GLib.Error e) {
-            debug("Error while closing AVI file: %s", e.message);
-        } 
-        return timestamp;
-    }
-}
-
-private class AVIChunk {
-    private GLib.File file = null;
-    private string section_name = "";
-    private uint64 section_size = 0;
-    private uint64 section_offset = 0;
-    private GLib.DataInputStream input = null;
-    private AVIChunk? parent = null;
-    private const int MAX_STRING_TO_SECTION_LENGTH = 1024;
-    
-    public AVIChunk(GLib.File file) {
-        this.file = file;
-    }
-    
-    private AVIChunk.with_input_stream(GLib.DataInputStream input, AVIChunk parent) {
-        this.input = input;
-        this.parent = parent;
-    }   
-    
-    public void open_file() throws GLib.Error {
-        close_file();
-        input = new GLib.DataInputStream(file.read());
-        input.set_byte_order(DataStreamByteOrder.LITTLE_ENDIAN);
-        section_size = 0;
-        section_offset = 0;
-        section_name = "";
-    }
-    
-    public void close_file() throws GLib.Error {
-        if (null != input) {
-            input.close();
-            input = null;
-        }
-    }
-    
-    public void nonsection_skip(uint64 skip_amount) throws GLib.Error {
-        skip_uint64(input, skip_amount);
-    }
-    
-    public void skip(uint64 skip_amount) throws GLib.Error {
-        advance_section_offset(skip_amount);
-        skip_uint64(input, skip_amount);
-    }
-    
-    public AVIChunk get_first_child_chunk() {
-        return new AVIChunk.with_input_stream(input, this);
-    }
-    
-    private void advance_section_offset(uint64 amount) {
-        if ((section_offset + amount) > section_size)
-            amount = section_size - section_offset;
-        
-        section_offset += amount;
-        if (null != parent) {
-            parent.advance_section_offset(amount);
-        }
-    }
-    
-    public uchar read_byte() throws GLib.Error {
-        advance_section_offset(1);
-        return input.read_byte();
-    }
-    
-    public uint16 read_uint16() throws GLib.Error {
-       advance_section_offset(2);
-       return input.read_uint16();
-    }
-    
-    public void read_chunk() throws GLib.Error {
-        // don't use checked reads here because they advance the section offset, which we're trying
-        // to determine here
-        GLib.StringBuilder sb = new GLib.StringBuilder();
-        sb.append_c((char) input.read_byte());
-        sb.append_c((char) input.read_byte());
-        sb.append_c((char) input.read_byte());
-        sb.append_c((char) input.read_byte());
-        section_name = sb.str;
-        section_size = input.read_uint32();
-        section_offset = 0;
-    }
-    
-    public string read_name() throws GLib.Error {
-        GLib.StringBuilder sb = new GLib.StringBuilder();
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        sb.append_c((char) read_byte());
-        return sb.str;
-    }
-    
-    public void next_chunk() throws GLib.Error {
-        skip(section_size_remaining());
-        section_size = 0;
-        section_offset = 0;
-    }
-    
-    public string get_current_chunk_name() {
-        return section_name;
-    }
-   
-    public bool is_last_chunk() {
-        return section_size == 0;
-    }
-    
-    public uint64 section_size_remaining() {
-        assert(section_size >= section_offset);
-        return section_size - section_offset;
-    }
-    
-    // Reads section contents into a string.
-    public string section_to_string() throws GLib.Error {
-        GLib.StringBuilder sb = new GLib.StringBuilder();
-        while (section_offset < section_size) {
-            sb.append_c((char) read_byte());
-            if (sb.len > MAX_STRING_TO_SECTION_LENGTH) {
-                return sb.str;
-            }
-        }
-        return sb.str;
-    }
-    
-}
-