mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 14:52:43 +00:00
patch by Joey Parrish <joey@nicewarrior.org>:
- updated from libdvdread 0.9.4 and removed udf caching (fixes mpdvdkit on cygwin) git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10724 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi
parent
51843b59f7
commit
948c6be0b1
@ -4,6 +4,9 @@
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*
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* Modifications by:
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* Billy Biggs <vektor@dumbterm.net>.
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* Björn Englund <d4bjorn@dtek.chalmers.se>.
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* Joey Parrish <joey@nicewarrior.org>.
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* - updated from libdvdread 0.9.4 and removed udf caching
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*
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* dvdudf: parse and read the UDF volume information of a DVD Video
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* Copyright (C) 1999 Christian Wolff for convergence integrated media
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@ -95,6 +98,32 @@ struct AD {
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uint16_t Partition;
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};
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struct extent_ad {
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uint32_t location;
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uint32_t length;
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};
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struct avdp_t {
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struct extent_ad mvds;
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struct extent_ad rvds;
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};
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struct pvd_t {
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uint8_t VolumeIdentifier[32];
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uint8_t VolumeSetIdentifier[128];
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};
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struct lbudf {
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uint32_t lb;
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uint8_t *data;
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};
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struct icbmap {
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uint32_t lbn;
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struct AD file;
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uint8_t filetype;
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};
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/* For direct data access, LSB first */
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#define GETN1(p) ((uint8_t)data[p])
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#define GETN2(p) ((uint16_t)data[p] | ((uint16_t)data[(p) + 1] << 8))
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@ -336,6 +365,67 @@ static int UDFScanDir( dvd_reader_t *device, struct AD Dir, char *FileName,
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return 0;
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}
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static int UDFGetAVDP( dvd_reader_t *device,
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struct avdp_t *avdp)
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{
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uint8_t Anchor[ DVD_VIDEO_LB_LEN ];
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uint32_t lbnum, MVDS_location, MVDS_length;
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uint16_t TagID;
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uint32_t lastsector;
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int terminate;
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struct avdp_t;
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/* Find Anchor */
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lastsector = 0;
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lbnum = 256; /* Try #1, prime anchor */
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terminate = 0;
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for(;;) {
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if( DVDReadLBUDF( device, lbnum, 1, Anchor, 0 ) > 0 ) {
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UDFDescriptor( Anchor, &TagID );
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} else {
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TagID = 0;
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}
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if (TagID != 2) {
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/* Not an anchor */
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if( terminate ) return 0; /* Final try failed */
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if( lastsector ) {
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/* We already found the last sector. Try #3, alternative
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* backup anchor. If that fails, don't try again.
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*/
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lbnum = lastsector;
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terminate = 1;
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} else {
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/* TODO: Find last sector of the disc (this is optional). */
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if( lastsector ) {
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/* Try #2, backup anchor */
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lbnum = lastsector - 256;
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} else {
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/* Unable to find last sector */
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return 0;
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}
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}
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} else {
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/* It's an anchor! We can leave */
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break;
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}
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}
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/* Main volume descriptor */
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UDFExtentAD( &Anchor[ 16 ], &MVDS_length, &MVDS_location );
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avdp->mvds.location = MVDS_location;
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avdp->mvds.length = MVDS_length;
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/* Backup volume descriptor */
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UDFExtentAD( &Anchor[ 24 ], &MVDS_length, &MVDS_location );
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avdp->rvds.location = MVDS_location;
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avdp->rvds.length = MVDS_length;
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return 1;
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}
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/**
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* Looks for partition on the disc. Returns 1 if partition found, 0 on error.
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* partnum: Number of the partition, starting at 0.
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@ -344,52 +434,21 @@ static int UDFScanDir( dvd_reader_t *device, struct AD Dir, char *FileName,
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static int UDFFindPartition( dvd_reader_t *device, int partnum,
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struct Partition *part )
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{
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uint8_t LogBlock[ DVD_VIDEO_LB_LEN ], Anchor[ DVD_VIDEO_LB_LEN ];
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uint8_t LogBlock[ DVD_VIDEO_LB_LEN ];
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uint32_t lbnum, MVDS_location, MVDS_length;
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uint16_t TagID;
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uint32_t lastsector;
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int i, terminate, volvalid;
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int i, volvalid;
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struct avdp_t avdp;
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/* Find Anchor */
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lastsector = 0;
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lbnum = 256; /* Try #1, prime anchor */
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terminate = 0;
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for(;;) {
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if( DVDReadLBUDF( device, lbnum, 1, Anchor, 0 ) > 0 ) {
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UDFDescriptor( Anchor, &TagID );
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} else {
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TagID = 0;
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}
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if (TagID != 2) {
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/* Not an anchor */
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if( terminate ) return 0; /* Final try failed */
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if( lastsector ) {
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/* We already found the last sector. Try #3, alternative
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* backup anchor. If that fails, don't try again.
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*/
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lbnum = lastsector;
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terminate = 1;
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} else {
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/* TODO: Find last sector of the disc (this is optional). */
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if( lastsector ) {
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/* Try #2, backup anchor */
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lbnum = lastsector - 256;
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} else {
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/* Unable to find last sector */
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return 0;
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}
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}
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} else {
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/* It's an anchor! We can leave */
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break;
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}
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if(!UDFGetAVDP(device, &avdp)) {
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return 0;
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}
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/* Main volume descriptor */
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UDFExtentAD( &Anchor[ 16 ], &MVDS_length, &MVDS_location );
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MVDS_location = avdp.mvds.location;
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MVDS_length = avdp.mvds.length;
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part->valid = 0;
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volvalid = 0;
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part->VolumeDesc[ 0 ] = '\0';
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@ -424,8 +483,9 @@ static int UDFFindPartition( dvd_reader_t *device, int partnum,
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&& ( ( !part->valid ) || ( !volvalid ) ) );
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if( ( !part->valid) || ( !volvalid ) ) {
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/* Backup volume descriptor */
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UDFExtentAD( &Anchor[ 24 ], &MVDS_length, &MVDS_location );
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/* Backup volume descriptor */
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MVDS_location = avdp.mvds.location;
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MVDS_length = avdp.mvds.length;
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}
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} while( i-- && ( ( !part->valid ) || ( !volvalid ) ) );
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@ -444,17 +504,18 @@ uint32_t UDFFindFile( dvd_reader_t *device, char *filename,
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char tokenline[ MAX_UDF_FILE_NAME_LEN ];
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char *token;
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uint8_t filetype;
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*filesize = 0;
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tokenline[0] = '\0';
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strcat( tokenline, filename );
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/* Find partition, 0 is the standard location for DVD Video.*/
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if( !UDFFindPartition( device, 0, &partition ) ) return 0;
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/* Find root dir ICB */
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lbnum = partition.Start;
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do {
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/* Find partition, 0 is the standard location for DVD Video.*/
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if( !UDFFindPartition( device, 0, &partition ) ) return 0;
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/* Find root dir ICB */
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lbnum = partition.Start;
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do {
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if( DVDReadLBUDF( device, lbnum++, 1, LogBlock, 0 ) <= 0 ) {
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TagID = 0;
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} else {
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@ -471,19 +532,27 @@ uint32_t UDFFindFile( dvd_reader_t *device, char *filename,
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/* Sanity checks. */
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if( TagID != 256 ) return 0;
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if( RootICB.Partition != 0 ) return 0;
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/* Find root dir */
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if( !UDFMapICB( device, RootICB, &filetype, &partition, &File ) ) return 0;
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if( filetype != 4 ) return 0; /* Root dir should be dir */
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/* Tokenize filepath */
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token = strtok(tokenline, "/");
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while( token != NULL ) {
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if( !UDFScanDir( device, File, token, &partition, &ICB ) ) return 0;
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if( !UDFMapICB( device, ICB, &filetype, &partition, &File ) ) return 0;
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{
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/* Tokenize filepath */
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token = strtok(tokenline, "/");
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while( token != NULL ) {
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if( !UDFScanDir( device, File, token, &partition, &ICB)) {
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return 0;
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}
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if( !UDFMapICB( device, ICB, &filetype, &partition, &File ) ) {
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return 0;
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}
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token = strtok( NULL, "/" );
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}
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}
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}
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/* Sanity check. */
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if( File.Partition != 0 ) return 0;
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@ -494,3 +563,81 @@ uint32_t UDFFindFile( dvd_reader_t *device, char *filename,
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else
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return partition.Start + File.Location;
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}
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/**
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* Gets a Descriptor .
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* Returns 1 if descriptor found, 0 on error.
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* id, tagid of descriptor
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* bufsize, size of BlockBuf (must be >= DVD_VIDEO_LB_LEN).
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*/
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static int UDFGetDescriptor( dvd_reader_t *device, int id,
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uint8_t *descriptor, int bufsize)
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{
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uint32_t lbnum, MVDS_location, MVDS_length;
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struct avdp_t avdp;
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uint16_t TagID;
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uint32_t lastsector;
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int i, terminate;
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int desc_found = 0;
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/* Find Anchor */
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lastsector = 0;
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lbnum = 256; /* Try #1, prime anchor */
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terminate = 0;
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if(bufsize < DVD_VIDEO_LB_LEN) {
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return 0;
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}
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if(!UDFGetAVDP(device, &avdp)) {
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return 0;
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}
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/* Main volume descriptor */
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MVDS_location = avdp.mvds.location;
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MVDS_length = avdp.mvds.length;
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i = 1;
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do {
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/* Find Descriptor */
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lbnum = MVDS_location;
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do {
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if( DVDReadLBUDF( device, lbnum++, 1, descriptor, 0 ) <= 0 ) {
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TagID = 0;
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} else {
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UDFDescriptor( descriptor, &TagID );
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}
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if( (TagID == id) && ( !desc_found ) ) {
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/* Descriptor */
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desc_found = 1;
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}
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} while( ( lbnum <= MVDS_location + ( MVDS_length - 1 )
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/ DVD_VIDEO_LB_LEN ) && ( TagID != 8 )
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&& ( !desc_found) );
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if( !desc_found ) {
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/* Backup volume descriptor */
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MVDS_location = avdp.rvds.location;
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MVDS_length = avdp.rvds.length;
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}
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} while( i-- && ( !desc_found ) );
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return desc_found;
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}
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static int UDFGetPVD(dvd_reader_t *device, struct pvd_t *pvd)
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{
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uint8_t pvd_buf[DVD_VIDEO_LB_LEN];
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if(!UDFGetDescriptor( device, 1, pvd_buf, sizeof(pvd_buf))) {
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return 0;
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}
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memcpy(pvd->VolumeIdentifier, &pvd_buf[24], 32);
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memcpy(pvd->VolumeSetIdentifier, &pvd_buf[72], 128);
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return 1;
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}
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