[DVDnav-discuss] r1178 - in trunk/libdvdread/src: dvd_reader.c dvdread/dvd_reader.h
erik
subversion at mplayerhq.hu
Wed Sep 2 03:43:21 CEST 2009
Author: erik
Date: Wed Sep 2 03:43:21 2009
New Revision: 1178
Log:
Add DVD file stat from version 0.9.7 to libdvdread
A new function to do an informational read of the DVD file handle was
introduced to libdvdread 0.9.7 (or was it .6). Since libdvdread at
mplayerhq imported an older version of dvdread/dvdnav this part of
the API was not available. This commit places that function into
the library making this library complete in reference to 0.9.7.
Modified:
trunk/libdvdread/src/dvd_reader.c
trunk/libdvdread/src/dvdread/dvd_reader.h
Modified: trunk/libdvdread/src/dvd_reader.c
==============================================================================
--- trunk/libdvdread/src/dvd_reader.c Wed Sep 2 03:43:18 2009 (r1177)
+++ trunk/libdvdread/src/dvd_reader.c Wed Sep 2 03:43:21 2009 (r1178)
@@ -111,6 +111,12 @@ struct dvd_file_s {
ssize_t filesize;
};
+struct dvd_stat_s {
+ off_t size; /**< Total size of file in bytes */
+ int nr_parts; /**< Number of file parts */
+ off_t parts_size[9]; /**< Size of each part in bytes */
+};
+
int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
size_t block_count, unsigned char *data,
int encrypted );
@@ -895,6 +901,180 @@ void DVDCloseFile( dvd_file_t *dvd_file
}
}
+static int DVDFileStatVOBUDF( dvd_reader_t *dvd, int title,
+ int menu, dvd_stat_t *statbuf )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ uint32_t size;
+ off_t tot_size;
+ off_t parts_size[ 9 ];
+ int nr_parts = 0;
+ int n;
+
+ if( title == 0 )
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
+ else
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
+
+ if( !UDFFindFile( dvd, filename, &size ) )
+ return -1;
+
+ tot_size = size;
+ nr_parts = 1;
+ parts_size[ 0 ] = size;
+
+ if( !menu ) {
+ int cur;
+
+ for( cur = 2; cur < 10; cur++ ) {
+ sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, cur );
+ if( !UDFFindFile( dvd, filename, &size ) )
+ break;
+
+ parts_size[ nr_parts ] = size;
+ tot_size += size;
+ nr_parts++;
+ }
+ }
+
+ statbuf->size = tot_size;
+ statbuf->nr_parts = nr_parts;
+ for( n = 0; n < nr_parts; n++ )
+ statbuf->parts_size[ n ] = parts_size[ n ];
+
+ return 0;
+}
+
+
+static int DVDFileStatVOBPath( dvd_reader_t *dvd, int title,
+ int menu, dvd_stat_t *statbuf )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ char full_path[ PATH_MAX + 1 ];
+ struct stat fileinfo;
+ off_t tot_size;
+ off_t parts_size[ 9 ];
+ int nr_parts = 0;
+ int n;
+
+ if( title == 0 )
+ sprintf( filename, "VIDEO_TS.VOB" );
+ else
+ sprintf( filename, "VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
+
+ if( !findDVDFile( dvd, filename, full_path ) )
+ return -1;
+
+ if( stat( full_path, &fileinfo ) < 0 ) {
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ return -1;
+ }
+
+ tot_size = fileinfo.st_size;
+ nr_parts = 1;
+ parts_size[ 0 ] = fileinfo.st_size;
+
+ if( !menu ) {
+ int cur;
+ for( cur = 2; cur < 10; cur++ ) {
+ sprintf( filename, "VTS_%02d_%d.VOB", title, cur );
+ if( !findDVDFile( dvd, filename, full_path ) )
+ break;
+
+ if( stat( full_path, &fileinfo ) < 0 ) {
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ break;
+ }
+
+ parts_size[ nr_parts ] = fileinfo.st_size;
+ tot_size += parts_size[ nr_parts ];
+ nr_parts++;
+ }
+ }
+
+ statbuf->size = tot_size;
+ statbuf->nr_parts = nr_parts;
+ for( n = 0; n < nr_parts; n++ )
+ statbuf->parts_size[ n ] = parts_size[ n ];
+
+ return 0;
+}
+
+
+int DVDFileStat( dvd_reader_t *dvd, int titlenum,
+ dvd_read_domain_t domain, dvd_stat_t *statbuf )
+{
+ char filename[ MAX_UDF_FILE_NAME_LEN ];
+ char full_path[ PATH_MAX + 1 ];
+ struct stat fileinfo;
+ uint32_t size;
+
+ /* Check arguments. */
+ if( dvd == NULL || titlenum < 0 ) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ switch( domain ) {
+ case DVD_READ_INFO_FILE:
+ if( titlenum == 0 )
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.IFO" );
+ else
+ sprintf( filename, "/VIDEO_TS/VTS_%02i_0.IFO", titlenum );
+
+ break;
+ case DVD_READ_INFO_BACKUP_FILE:
+ if( titlenum == 0 )
+ sprintf( filename, "/VIDEO_TS/VIDEO_TS.BUP" );
+ else
+ sprintf( filename, "/VIDEO_TS/VTS_%02i_0.BUP", titlenum );
+
+ break;
+ case DVD_READ_MENU_VOBS:
+ if( dvd->isImageFile )
+ return DVDFileStatVOBUDF( dvd, titlenum, 1, statbuf );
+ else
+ return DVDFileStatVOBPath( dvd, titlenum, 1, statbuf );
+
+ break;
+ case DVD_READ_TITLE_VOBS:
+ if( titlenum == 0 )
+ return -1;
+
+ if( dvd->isImageFile )
+ return DVDFileStatVOBUDF( dvd, titlenum, 0, statbuf );
+ else
+ return DVDFileStatVOBPath( dvd, titlenum, 0, statbuf );
+
+ break;
+ default:
+ fprintf( stderr, "libdvdread: Invalid domain for file stat.\n" );
+ errno = EINVAL;
+ return -1;
+ }
+
+ if( dvd->isImageFile ) {
+ if( UDFFindFile( dvd, filename, &size ) ) {
+ statbuf->size = size;
+ statbuf->nr_parts = 1;
+ statbuf->parts_size[ 0 ] = size;
+ return 0;
+ }
+ } else {
+ if( findDVDFile( dvd, filename, full_path ) ) {
+ if( stat( full_path, &fileinfo ) < 0 )
+ fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
+ else {
+ statbuf->size = fileinfo.st_size;
+ statbuf->nr_parts = 1;
+ statbuf->parts_size[ 0 ] = statbuf->size;
+ return 0;
+ }
+ }
+ }
+ return -1;
+}
+
/* Internal, but used from dvd_udf.c */
int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
size_t block_count, unsigned char *data,
Modified: trunk/libdvdread/src/dvdread/dvd_reader.h
==============================================================================
--- trunk/libdvdread/src/dvdread/dvd_reader.h Wed Sep 2 03:43:18 2009 (r1177)
+++ trunk/libdvdread/src/dvdread/dvd_reader.h Wed Sep 2 03:43:21 2009 (r1178)
@@ -70,6 +70,11 @@ typedef struct dvd_reader_s dvd_reader_t
typedef struct dvd_file_s dvd_file_t;
/**
+ * Opaque type that is used to provide statistics on a handle.
+ */
+typedef struct dvd_stat_s dvd_stat_t;
+
+/**
* Opens a block device of a DVD-ROM file, or an image file, or a directory
* name for a mounted DVD or HD copy of a DVD.
*
@@ -117,6 +122,33 @@ typedef enum {
} dvd_read_domain_t;
/**
+ * Stats a file on the DVD given the title number and domain.
+ * The information about the file is stored in a dvd_stat_t
+ * which contains information about the size of the file and
+ * the number of parts in case of a multipart file and the respective
+ * sizes of the parts.
+ * A multipart file is for instance VTS_02_1.VOB, VTS_02_2.VOB, VTS_02_3.VOB
+ * The size of VTS_02_1.VOB will be stored in stat->parts_size[0],
+ * VTS_02_2.VOB in stat->parts_size[1], ...
+ * The total size (sum of all parts) is stored in stat->size and
+ * stat->nr_parts will hold the number of parts.
+ * Only DVD_READ_TITLE_VOBS (VTS_??_[1-9].VOB) can be multipart files.
+ *
+ * This function is only of use if you want to get the size of each file
+ * in the filesystem. These sizes are not needed to use any other
+ * functions in libdvdread.
+ *
+ * @param dvd A dvd read handle.
+ * @param titlenum Which Video Title Set should be used, VIDEO_TS is 0.
+ * @param domain Which domain.
+ * @param stat Pointer to where the result is stored.
+ * @return If successful 0, otherwise -1.
+ *
+ * int DVDFileStat(dvd, titlenum, domain, stat);
+ */
+int DVDFileStat(dvd_reader_t *, int, dvd_read_domain_t, dvd_stat_t *);
+
+/**
* Opens a file on the DVD given the title number and domain.
*
* If the title number is 0, the video manager information is opened
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