/*************************************************************************** copyright : (C) 2005 by Paul Cifarelli email : paulc2@optonline.net ***************************************************************************/ /*************************************************************************** * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This library is distributed in the hope that it will be useful, but * * WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * Lesser General Public License for more details. * * * * You should have received a copy of the GNU Lesser General Public * * License along with this library; if not, write to the Free Software * * Foundation, Inc., 51 Franklin St, 5th fl, Boston, MA 02110-1301, * * USA, or check http://www.fsf.org/about/contact.html * * * * Note that no RealNetworks code appears or is duplicated, copied, or * + used as a template in this code. The code was written from scratch * * using the reference documentation found at: * * * * https://common.helixcommunity.org/nonav/2003/HCS_SDK_r5/helixsdk.htm * * * ***************************************************************************/ #ifndef _RMFF_H_INCLUDED_ #define _RMFF_H_INCLUDED_ #include namespace TagLib { class AudioProperties; namespace RealMedia { #if SIZEOF_LONG == 4 typedef unsigned long UINT32; #elif SIZEOF_INT == 4 typedef unsigned int UINT32; #else #error At least 1 builtin type needs to be 4 bytes!! #endif typedef unsigned short UINT16; typedef unsigned char UINT8; static const int RMFF_HDR_SIZE = 8; // packed hdr size // some assumptions on these 2 enum defs, based solely on the order they are listed on the website enum PROPERTY_TYPES { MPT_TEXT = 1, // The value is string data. MPT_TEXTLIST, // The value is a separated list of strings, // separator specified as sub-property/type descriptor. MPT_FLAG, // The value is a boolean flag-either 1 byte or 4 bytes, check size value. MPT_ULONG, // The value is a four-byte integer. MPT_BINARY, // The value is a byte stream. MPT_URL, // The value is string data. MPT_DATE, // The value is a string representation of the date in the form: // YYYYmmDDHHMMSS (m = month, M = minutes). MPT_FILENAME, // The value is string data. MPT_GROUPING, // This property has subproperties, but its own value is empty. MPT_REFERENCE // The value is a large buffer of data, use sub-properties/type // descriptors to identify mime-type. }; enum PROPERTY_FLAGS { MPT_READONLY = 1, // Read only, cannot be modified. MPT_PRIVATE = 2, // Private, do not expose to users. MPT_TYPE_DESCRIPTOR = 4 // Type descriptor used to further define type of value. }; struct Collectable { Collectable() : fwd(0) {} virtual ~Collectable() {} Collectable *fwd; }; struct File_Header_Start { UINT32 object_id; UINT32 size; }; struct File_Header_v0_v1 : public Collectable { File_Header_Start s; UINT16 object_version; UINT32 file_version; UINT32 num_headers; }; struct RMProperties : public Collectable { File_Header_Start s; UINT16 object_version; UINT32 max_bit_rate; UINT32 avg_bit_rate; UINT32 max_packet_size; UINT32 avg_packet_size; UINT32 num_packets; UINT32 duration; UINT32 preroll; UINT32 index_offset; UINT32 data_offset; UINT16 num_streams; UINT16 flags; }; struct NameValueProperty { NameValueProperty() : name(0), value_data(0) {} virtual ~NameValueProperty() { delete [] name; delete [] value_data; } UINT32 size; UINT16 object_version; UINT8 name_length; UINT8 *name; UINT32 type; UINT16 value_length; UINT8 *value_data; }; struct LogicalStream { LogicalStream() : physical_stream_numbers(0), data_offsets(0), rule_to_physical_stream_number_map(0), properties(0) {} virtual ~LogicalStream() { delete [] physical_stream_numbers; delete [] data_offsets; delete [] rule_to_physical_stream_number_map; delete [] properties; } UINT32 size; UINT16 object_version; UINT16 num_physical_streams; UINT16 *physical_stream_numbers; UINT32 *data_offsets; UINT16 num_rules; UINT16 *rule_to_physical_stream_number_map; UINT16 num_properties; NameValueProperty *properties; }; struct MediaProperties : public Collectable { MediaProperties() : type_specific_data(0), lstr(0) {} virtual ~MediaProperties() { delete lstr; delete [] type_specific_data; } File_Header_Start s; UINT16 object_version; UINT16 stream_number; UINT32 max_bit_rate; UINT32 avg_bit_rate; UINT32 max_packet_size; UINT32 avg_packet_size; UINT32 start_time; UINT32 preroll; UINT32 duration; UINT8 stream_name_size; UINT8 stream_name[256]; UINT8 mime_type_size; UINT8 mime_type[256]; UINT32 type_specific_len; UINT8 *type_specific_data; LogicalStream *lstr; // only one of these }; struct ContentDescription : public Collectable { ContentDescription() : title(0), author(0), copyright(0), comment(0) {} virtual ~ContentDescription() { delete [] title; delete [] author; delete [] copyright; delete [] comment; } File_Header_Start s; UINT16 object_version; UINT16 title_len; UINT8 *title; UINT16 author_len; UINT8 *author; UINT16 copyright_len; UINT8 *copyright; UINT16 comment_len; UINT8 *comment; }; struct PropListEntry { UINT32 offset; UINT32 num_props_for_name; }; struct MDProperties { MDProperties() : name(0), value(0), subproperties(0) {} virtual ~MDProperties() { delete [] name; delete [] value; delete [] subproperties_list; delete [] subproperties; } UINT32 size; UINT32 type; UINT32 flags; UINT32 value_offset; UINT32 subproperties_offset; UINT32 num_subproperties; UINT32 name_length; UINT8 *name; UINT32 value_length; UINT8 *value; PropListEntry *subproperties_list; // num_subproperties MDProperties *subproperties; // num_subproperties }; struct MetadataSection : public Collectable { File_Header_Start s; UINT32 object_id; UINT32 object_version; // this is the 1 "unnamed root property" MDProperties properties; }; class Tag; class File; // RealMedia File Format contains a normal ID3v1 Tag at the end of the file // no sense reinventing the wheel, so this class is just so we can use TagLib // to manage it class RMFFile : public TagLib::File { public: RMFFile(const char *filename); virtual ~RMFFile(); bool save(); TagLib::Tag *tag() const { return m_id3tag; } TagLib::AudioProperties *audioProperties() const { return 0; } private: TagLib::ID3v1::Tag *m_id3tag; }; class RealMediaFF { public: RealMediaFF(const char *file, bool readProperties = true, TagLib::AudioProperties::ReadStyle propertiesStyle = TagLib::AudioProperties::Average); RealMediaFF(RealMediaFF &src); ~RealMediaFF(); int err() const { return m_err; } bool isEmpty() const; // tag TagLib::String title () const; TagLib::String artist () const; TagLib::String album () const; TagLib::String comment () const; TagLib::String genre () const; TagLib::uint year () const; TagLib::uint track () const; // TODO write support //void setTitle (const String &s); //void setArtist (const String &s); //void setAlbum (const String &s); //void setComment (const String &s); //void setGenre (const String &s); //void setYear (uint i); //void setTrack (uint i); // properties int length () const; int bitrate () const; int sampleRate () const; int channels () const; #ifdef TESTING std::ostream &operator<<(std::ostream &os); #endif private: RealMediaFF(); char *m_filename; Collectable *m_head; Collectable *m_tail; int m_fd; int m_err; File_Header_v0_v1 *m_hdr; RMProperties *m_props; MediaProperties *media_hdrs; ContentDescription *m_contenthdr; MetadataSection *m_md; char *m_title; char *m_author; char *m_copyright; char *m_comment; RMFFile *m_id3v1tag; bool m_flipYearInMetadataSection; bool m_readProperties; int init(); int initMetadataSection(); void saveHeader(Collectable *hdr); int seekChunk(UINT32 object_id); int getHdr(unsigned char *buf, size_t sz, UINT32 &fourcc, UINT32 &csz); int getChunk(unsigned char *buf, size_t sz, UINT32 &fourcc, UINT32 &csz, UINT32 &consumed); int getRealFileHeader(File_Header_v0_v1 *hdr, const unsigned char *buf, UINT32 object_id, int sz); int getRealPropertyHeader(RMProperties *props, const unsigned char *buf, UINT32 object_id, int sz); int getMediaPropHeader(MediaProperties *mh, const unsigned char *buf, UINT32 object_id, int sz); int getContentDescription(ContentDescription *cont, const unsigned char *buf, UINT32 object_id, int sz); int getMDProperties(MDProperties *md, const unsigned char *buf); #ifdef TESTING void printRealFileHeader(std::ostream &os); void printRealPropHeader(std::ostream &os); void printMediaPropHeaders(std::ostream &os); void printContentDescription(std::ostream &os); void printID3v1Tag(std::ostream &os); void printMetadataSection(std::ostream &os); void printMDProperties(std::ostream &os, char *name, MDProperties *props); #endif }; } // namespace RealMedia } // namespace TagLib #ifdef TESTING std::ostream &operator<<(std::ostream &os, TagLib::RealMedia::RealMediaFF &rmff); #endif #endif