Created info retrieval companion for libburner
This commit is contained in:
parent
66c3ead5d6
commit
ef6d76c22d
@ -73,6 +73,7 @@ libinclude_HEADERS = \
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## Build test applications
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noinst_PROGRAMS = \
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test/libburner \
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test/telltoc \
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test/dewav \
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test/fake_au \
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test/poll \
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@ -85,6 +86,9 @@ bin_PROGRAMS = \
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test_libburner_CPPFLAGS = -Ilibburn
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test_libburner_LDADD = $(libburn_libburn_la_OBJECTS) $(THREAD_LIBS)
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test_libburner_SOURCES = test/libburner.c
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test_telltoc_CPPFLAGS = -Ilibburn
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test_telltoc_LDADD = $(libburn_libburn_la_OBJECTS) $(THREAD_LIBS)
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test_telltoc_SOURCES = test/telltoc.c
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test_dewav_CPPFLAGS = -Ilibburn
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test_dewav_LDADD = $(libburn_libburn_la_OBJECTS) $(THREAD_LIBS)
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test_dewav_SOURCES = test/dewav.c
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@ -106,7 +110,6 @@ cdrskin_cdrskin_CPPFLAGS = -Ilibburn
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cdrskin_cdrskin_CFLAGS = -DCdrskin_libburn_0_2_3
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cdrskin_cdrskin_LDADD = $(libburn_libburn_la_OBJECTS) $(THREAD_LIBS)
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cdrskin_cdrskin_SOURCES = cdrskin/cdrskin.c cdrskin/cdrfifo.c cdrskin/cdrfifo.h cdrskin/cdrskin_timestamp.h
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## cdrskin_cdrskin_SOURCES = cdrskin/cdrskin.c cdrskin/cdrfifo.c cdrskin/cdrfifo.h cdrskin/cleanup.c cdrskin/cleanup.h cdrskin/cdrskin_timestamp.h
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##
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## Open questions: how to compute $timestamp and express -DX="$timestamp"
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##
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574
test/telltoc.c
Normal file
574
test/telltoc.c
Normal file
@ -0,0 +1,574 @@
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/* test/telltoc.c , API illustration of obtaining media status info */
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/* Copyright (C) 2006 Thomas Schmitt <scdbackup@gmx.net> Provided under GPL */
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/** Overview
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telltoc is a minimal demo application for the library libburn as provided
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on http://libburn.pykix.org . It can list the available devices, can display
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some drive properties, the type of media, eventual table of content and
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multisession info for mkisofs option -C .
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It's main purpose, nevertheless, is to show you how to use libburn and also
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to serve the libburn team as reference application. telltoc.c does indeed
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define the standard way how above gestures can be implemented and stay upward
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compatible for a good while.
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Before you can do anything, you have to initialize libburn by
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burn_initialize()
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as it is done in main() at the end of this file. Then you aquire a
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drive in an appropriate way conforming to the API. The two main
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approaches are shown here in application functions:
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telltoc_aquire_by_adr() demonstrates usage as of cdrecord traditions
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telltoc_aquire_by_driveno() demonstrates a scan-and-choose approach
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With that aquired drive you can call
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telltoc_media() prints some information about the media in a drive
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telltoc_toc() prints a table of content (if there is content)
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telltoc_msinfo() prints parameters for mkisofs option -C
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When everything is done, main() releases the drive and shuts down libburn:
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burn_drive_release();
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burn_finish()
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*/
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/** See this for the decisive API specs . libburn.h is The Original */
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/* For using the installed header file : #include <libburn/libburn.h> */
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/* This program insists in the own headerfile. */
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#include "../libburn/libburn.h"
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/* libburn is intended for Linux systems with kernel 2.4 or 2.6 for now */
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#include <stdio.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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/** For simplicity i use global variables to represent the drives.
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Drives are systemwide global, so we do not give away much of good style.
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*/
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/** This list will hold the drives known to libburn. This might be all CD
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drives of the system and thus might impose severe impact on the system.
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*/
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static struct burn_drive_info *drive_list;
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/** If you start a long lasting operation with drive_count > 1 then you are
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not friendly to the users of other drives on those systems. Beware. */
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static unsigned int drive_count;
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/** This variable indicates wether the drive is grabbed and must be
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finally released */
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static int drive_is_grabbed = 0;
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/* Some in-advance definitions to allow a more comprehensive ordering
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of the functions and their explanations in here */
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int telltoc_aquire_by_adr(char *drive_adr);
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int telltoc_aquire_by_driveno(int *drive_no, int silent);
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/* ------------------------------- API gestures ---------------------------- */
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/** You need to aquire a drive before burning. The API offers this as one
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compact call and alternatively as application controllable gestures of
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whitelisting, scanning for drives and finally grabbing one of them.
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If you have a persistent address of the drive, then the compact call is
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to prefer because it only touches one drive. On modern Linux kernels,
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there should be no fatal disturbance of ongoing burns of other libburn
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instances with any of our approaches. We use open(O_EXCL) by default.
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On /dev/hdX it should cooperate with growisofs and some cdrecord variants.
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On /dev/sgN versus /dev/scdM expect it not to respect other programs.
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*/
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int telltoc_aquire_drive(char *drive_adr, int *driveno, int silent_drive)
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{
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int ret;
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if(drive_adr != NULL && drive_adr[0] != 0)
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ret = telltoc_aquire_by_adr(drive_adr);
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else
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ret = telltoc_aquire_by_driveno(driveno, silent_drive);
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return ret;
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}
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/** If the persistent drive address is known, then this approach is much
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more un-obtrusive to the systemwide livestock of drives. Only the
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given drive device will be opened during this procedure.
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*/
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int telltoc_aquire_by_adr(char *drive_adr)
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{
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int ret;
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fprintf(stderr,"Aquiring drive '%s' ...\n",drive_adr);
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ret = burn_drive_scan_and_grab(&drive_list,drive_adr,1);
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if (ret <= 0) {
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fprintf(stderr,"FAILURE with persistent drive address '%s'\n",
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drive_adr);
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} else {
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fprintf(stderr,"Done\n");
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drive_is_grabbed = 1;
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}
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return ret;
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}
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/** This method demonstrates how to use libburn without knowing a persistent
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drive address in advance. It has to make sure that after assessing the list
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of available drives, all unwanted drives get closed again. As long as they
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are open, no other libburn instance can see them. This is an intended
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locking feature. The application is responsible for giving up the locks
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by either burn_drive_release() (only after burn_drive_grab() !),
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burn_drive_info_forget(), burn_drive_info_free(), or burn_finish().
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@param driveno the index number in libburn's drive list. This will get
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set to 0 on success and will then be the drive index to
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use in the further dourse of processing.
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@param silent_drive 1=do not print "Drive found :" line with *driveno >= 0
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@return 1 success , <= 0 failure
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*/
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int telltoc_aquire_by_driveno(int *driveno, int silent_drive)
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{
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char adr[BURN_DRIVE_ADR_LEN];
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int ret, i;
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fprintf(stderr, "Beginning to scan for devices ...\n");
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while (!burn_drive_scan(&drive_list, &drive_count))
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usleep(1002);
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if (drive_count <= 0 && *driveno >= 0) {
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fprintf(stderr, "FAILED (no drives found)\n");
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return 0;
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}
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fprintf(stderr, "Done\n");
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for (i = 0; i < drive_count; i++) {
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if (*driveno >= 0 && (silent_drive || *driveno != i))
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continue;
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if (burn_drive_get_adr(&(drive_list[i]), adr) <=0)
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strcpy(adr, "-get_adr_failed-");
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printf("Drive found : %d --drive '%s' : ", i,adr);
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printf("%-8s %-16s (%4s)\n",
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drive_list[i].vendor,drive_list[i].product,
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drive_list[i].revision);
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}
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if (*driveno < 0) {
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fprintf(stderr,
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"Pseudo-drive \"-\" given : bus scanning done.\n");
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return 2; /* the program will end after this */
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}
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/* We already made our choice via command line. (default is 0)
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So we just have to keep our desired drive and drop all others.
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*/
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if (drive_count <= *driveno) {
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fprintf(stderr,
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"Found only %d drives. Number %d not available.\n",
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drive_count, *driveno);
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return 0; /* the program will end after this */
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}
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/* Drop all drives which we do not want to use */
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for (i = 0; i < drive_count; i++) {
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if (i == *driveno) /* the one drive we want to keep */
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continue;
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ret = burn_drive_info_forget(&(drive_list[i]),0);
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if (ret != 1)
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fprintf(stderr, "Cannot drop drive %d. Please report \"ret=%d\" to libburn-hackers@pykix.org\n",
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i, ret);
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else
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fprintf(stderr, "Dropped unwanted drive %d\n",i);
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}
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/* Make the one we want ready for inquiry */
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ret= burn_drive_grab(drive_list[*driveno].drive, 1);
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if (ret != 1)
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return 0;
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drive_is_grabbed = 1;
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return 1;
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}
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/** This gesture is necessary to get my NEC DVD_RW ND-4570A out of a state
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of noisy overexcitement after it was inquired for Next Writeable Address.
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The noise then still lasts 20 seconds. Same with cdrecord -toc, btw.
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It opens a small gap for losing the drive to another libburn instance.
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Not a problem in telltoc. This is done as very last drive operation.
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Eventually the other libburn instance will have the same sanitizing effect.
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*/
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int telltoc_regrab(struct burn_drive *drive) {
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int ret;
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if (drive_is_grabbed)
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burn_drive_release(drive, 0);
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drive_is_grabbed = 0;
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ret = burn_drive_grab(drive, 0);
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if (ret != 0) {
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drive_is_grabbed = 1;
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}
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return !!ret;
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}
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int telltoc_media(struct burn_drive *drive)
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{
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int ret, media_found = 0;
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double max_speed = 0.0, min_speed = 0.0;
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enum burn_disc_status s;
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while (burn_drive_get_status(drive, NULL) != BURN_DRIVE_IDLE)
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usleep(100001);
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while ((s = burn_disc_get_status(drive)) == BURN_DISC_UNREADY)
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usleep(100001);
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printf("Media status : ");
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if (s==BURN_DISC_FULL) {
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printf("is written, is closed\n");
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media_found = 1;
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} else if (s==BURN_DISC_APPENDABLE) {
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printf("is written, is appendable\n");
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media_found = 1;
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} else if (s==BURN_DISC_BLANK) {
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printf("is blank\n");
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media_found = 1;
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} else if (s==BURN_DISC_EMPTY)
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printf("is not present\n");
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else
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printf("is not recognizable\n");
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printf("Media type : ");
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if (media_found) {
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if (burn_disc_erasable(drive))
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printf("is erasable\n");
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else
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printf("is not erasable\n");
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} else
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printf("is not recognizable\n");
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ret= burn_disc_read_atip(drive);
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if(ret>0) {
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ret= burn_drive_get_min_write_speed(drive);
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min_speed = ((double ) ret) / 176.0;
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}
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ret= burn_drive_get_write_speed(drive);
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max_speed = ((double ) ret) / 176.0;
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if (!media_found)
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printf("Drive speed : max=%.f\n", max_speed);
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else if (min_speed<=0)
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printf("Media speed : max=%.f\n", max_speed);
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else
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printf("Media speed : max=%.f , min=%.f\n",
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max_speed, min_speed);
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return 1;
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}
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int telltoc_toc(struct burn_drive *drive)
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{
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int num_sessions = 0 , num_tracks = 0 , lba = 0;
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int track_count = 0;
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int session_no, track_no;
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enum burn_disc_status s;
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struct burn_disc *disc= NULL;
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struct burn_session **sessions;
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struct burn_track **tracks;
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struct burn_toc_entry toc_entry;
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while (burn_drive_get_status(drive, NULL) != BURN_DRIVE_IDLE)
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usleep(100001);
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while ((s = burn_disc_get_status(drive)) == BURN_DISC_UNREADY)
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usleep(100001);
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disc = burn_drive_get_disc(drive);
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if (disc==NULL) {
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fprintf(stderr, "SORRY: Cannot obtain Table Of Content\n");
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return 2;
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}
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sessions = burn_disc_get_sessions(disc, &num_sessions);
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for (session_no = 0; session_no<num_sessions; session_no++) {
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tracks = burn_session_get_tracks(sessions[session_no],
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&num_tracks);
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if (tracks==NULL)
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continue;
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for(track_no= 0; track_no<num_tracks; track_no++) {
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track_count++;
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burn_track_get_entry(tracks[track_no], &toc_entry);
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lba= burn_msf_to_lba(toc_entry.pmin, toc_entry.psec,
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toc_entry.pframe);
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printf("Media content: session %2d ", session_no+1);
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printf("track %2d %s lba: %9d %2.2u:%2.2u:%2.2u\n",
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track_count,
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((toc_entry.control&7)<4?"audio":"data "),
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lba,
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toc_entry.pmin,
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toc_entry.psec,
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toc_entry.pframe);
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}
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burn_session_get_leadout_entry(sessions[session_no],
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&toc_entry);
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lba = burn_msf_to_lba(toc_entry.pmin,
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toc_entry.psec, toc_entry.pframe);
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printf("Media content: session %2d ", session_no+1);
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printf("leadout lba: %9d %2.2u:%2.2u:%2.2u\n",
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lba,
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toc_entry.pmin,
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toc_entry.psec,
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toc_entry.pframe);
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}
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if (disc!=NULL)
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burn_disc_free(disc);
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return 1;
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}
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int telltoc_msinfo(struct burn_drive *drive,
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int msinfo_explicit, int msinfo_alone)
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{
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int num_sessions, session_no, ret, num_tracks;
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int nwa = -123456789, lba = -123456789, aux_lba, lout_lba;
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enum burn_disc_status s;
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struct burn_disc *disc= NULL;
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struct burn_session **sessions;
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struct burn_track **tracks;
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struct burn_toc_entry toc_entry;
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struct burn_write_opts *o= NULL;
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while (burn_drive_get_status(drive, NULL) != BURN_DRIVE_IDLE)
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usleep(100001);
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while ((s = burn_disc_get_status(drive)) == BURN_DISC_UNREADY)
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usleep(100001);
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if (s!=BURN_DISC_APPENDABLE) {
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if (!msinfo_explicit)
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return 2;
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fprintf(stderr,
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"SORRY: --msinfo can only operate on appendable media.\n");
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return 0;
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}
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/* man mkisofs , option -C :
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The first number is the sector number of the first sector in
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the last session of the disk that should be appended to.
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*/
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disc = burn_drive_get_disc(drive);
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if (disc==NULL) {
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fprintf(stderr,"SORRY: Cannot obtain info about CD content\n");
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return 2;
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}
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sessions = burn_disc_get_sessions(disc, &num_sessions);
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for (session_no = 0; session_no<num_sessions; session_no++) {
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tracks = burn_session_get_tracks(sessions[session_no],
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&num_tracks);
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if (tracks==NULL || num_tracks<=0)
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continue;
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burn_track_get_entry(tracks[0], &toc_entry);
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lba= burn_msf_to_lba(toc_entry.pmin, toc_entry.psec,
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toc_entry.pframe);
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}
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if(lba==-123456789) {
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fprintf(stderr,"SORRY: Cannot find any track on media\n");
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{ ret = 0; goto ex; }
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}
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/* Prepare a qualified guess as fallback for nwa inquiry */
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burn_session_get_leadout_entry(sessions[num_sessions-1], &toc_entry);
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lout_lba= burn_msf_to_lba(toc_entry.pmin,toc_entry.psec,
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toc_entry.pframe);
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/* man mkisofs , option -C :
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The second number is the starting sector number of the new session.
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*/
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/* Set some write opts to be sent to drive. LG GSA-4082B needs it. */
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o= burn_write_opts_new(drive);
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if(o!=NULL) {
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burn_write_opts_set_perform_opc(o, 0);
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burn_write_opts_set_write_type(o,
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BURN_WRITE_TAO, BURN_BLOCK_MODE1);
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}
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/* Now try to inquire nwa from drive */
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ret= burn_disc_track_lba_nwa(drive,o,0,&aux_lba,&nwa);
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telltoc_regrab(drive); /* necessary to calm down my NEC drive */
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if(ret<=0) {
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fprintf(stderr,
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"NOTE: Guessing next writeable address from leadout\n");
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if(num_sessions>0)
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nwa= lout_lba+6900;
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else
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nwa= lout_lba+11400;
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}
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if (!msinfo_alone)
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printf("Media msinfo : mkisofs ... -C ");
|
||||
printf("%d,%d\n",lba,nwa);
|
||||
|
||||
ret = 1;
|
||||
ex:;
|
||||
if (disc!=NULL)
|
||||
burn_disc_free(disc);
|
||||
if (o!=NULL)
|
||||
burn_write_opts_free(o);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/** The setup parameters of telltoc */
|
||||
static char drive_adr[BURN_DRIVE_ADR_LEN] = {""};
|
||||
static int driveno = 0;
|
||||
static int do_media = 0;
|
||||
static int do_toc = 0;
|
||||
static int do_msinfo = 0;
|
||||
static int print_help = 0;
|
||||
|
||||
|
||||
/** Converts command line arguments into above setup parameters.
|
||||
drive_adr[] must provide at least BURN_DRIVE_ADR_LEN bytes.
|
||||
source_adr[] must provide at least 4096 bytes.
|
||||
*/
|
||||
int telltoc_setup(int argc, char **argv)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 1; i < argc; ++i) {
|
||||
if (!strcmp(argv[i], "--drive")) {
|
||||
++i;
|
||||
if (i >= argc) {
|
||||
fprintf(stderr,"--drive requires an argument\n");
|
||||
return 1;
|
||||
} else if (strcmp(argv[i], "-") == 0) {
|
||||
drive_adr[0] = 0;
|
||||
driveno = -1;
|
||||
} else if (isdigit(argv[i][0])) {
|
||||
drive_adr[0] = 0;
|
||||
driveno = atoi(argv[i]);
|
||||
} else {
|
||||
if(strlen(argv[i]) >= BURN_DRIVE_ADR_LEN) {
|
||||
fprintf(stderr,"--drive address too long (max. %d)\n",
|
||||
BURN_DRIVE_ADR_LEN-1);
|
||||
return 2;
|
||||
}
|
||||
strcpy(drive_adr, argv[i]);
|
||||
}
|
||||
} else if (strcmp(argv[i],"--media")==0) {
|
||||
do_media = 1;
|
||||
|
||||
} else if (!strcmp(argv[i], "--msinfo")) {
|
||||
do_msinfo = 1;
|
||||
|
||||
} else if (!strcmp(argv[i], "--toc")) {
|
||||
do_toc = 1;
|
||||
|
||||
} else if (!strcmp(argv[i], "--help")) {
|
||||
print_help = 1;
|
||||
|
||||
} else {
|
||||
fprintf(stderr, "Unidentified option: %s\n", argv[i]);
|
||||
return 7;
|
||||
}
|
||||
}
|
||||
if (argc==1)
|
||||
print_help = 1;
|
||||
if (print_help) {
|
||||
printf("Usage: %s\n", argv[0]);
|
||||
printf(" [--drive <address>|<driveno>|\"-\"]\n");
|
||||
printf(" [--media] [--toc] [--msinfo]\n");
|
||||
printf("Examples\n");
|
||||
printf("A bus scan (needs rw-permissions to see a drive):\n");
|
||||
printf(" %s --drive -\n",argv[0]);
|
||||
printf("Obtain info about the type of loaded media:\n");
|
||||
printf(" %s --drive /dev/hdc --media\n",argv[0]);
|
||||
printf("Obtain table of content:\n");
|
||||
printf(" %s --drive /dev/hdc --toc\n",argv[0]);
|
||||
printf("Obtain parameters for option -C of program mkisofs:\n");
|
||||
printf(" msinfo=$(%s --drive /dev/hdc --msinfo 2>/dev/null)\n",
|
||||
argv[0]);
|
||||
printf(" mkisofs ... -C \"$msinfo\" ...\n");
|
||||
printf("Obtain what is available about drive 0 and its media\n");
|
||||
printf(" %s --drive 0\n",argv[0]);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int ret, toc_failed = 0, msinfo_alone = 0, msinfo_explicit = 0;
|
||||
int full_default = 0;
|
||||
|
||||
ret = telltoc_setup(argc, argv);
|
||||
if (ret)
|
||||
exit(ret);
|
||||
|
||||
/* Behavior shall be different if --msinfo is only option */
|
||||
if (do_msinfo) {
|
||||
msinfo_explicit = 1;
|
||||
if (!(do_media || do_toc))
|
||||
msinfo_alone = 1;
|
||||
}
|
||||
/* Default option is to do everything if possible */
|
||||
if (do_media==0 && do_msinfo==0 && do_toc==0 && driveno!=-1) {
|
||||
if(print_help)
|
||||
exit(0);
|
||||
full_default = do_media = do_msinfo = do_toc = 1;
|
||||
}
|
||||
|
||||
fprintf(stderr, "Initializing libburn.pykix.org ...\n");
|
||||
if (burn_initialize())
|
||||
fprintf(stderr, "Done\n");
|
||||
else {
|
||||
fprintf(stderr,"\nFATAL: Failed to initialize.\n");
|
||||
exit(33);
|
||||
}
|
||||
|
||||
/* Print messages of severity SORRY or more directly to stderr */
|
||||
burn_msgs_set_severities("NEVER", "SORRY", "telltoc : ");
|
||||
|
||||
/** Note: driveno might change its value in this call */
|
||||
ret = telltoc_aquire_drive(drive_adr, &driveno, !full_default);
|
||||
if (ret<=0) {
|
||||
fprintf(stderr,"\nFATAL: Failed to aquire drive.\n");
|
||||
{ ret = 34; goto finish_libburn; }
|
||||
}
|
||||
if (ret == 2)
|
||||
{ ret = 0; goto release_drive; }
|
||||
|
||||
if (do_media) {
|
||||
ret = telltoc_media(drive_list[driveno].drive);
|
||||
if (ret<=0)
|
||||
{ret = 36; goto release_drive; }
|
||||
}
|
||||
if (do_toc) {
|
||||
ret = telltoc_toc(drive_list[driveno].drive);
|
||||
if (ret<=0)
|
||||
{ret = 37; goto release_drive; }
|
||||
if (ret==2)
|
||||
toc_failed = 1;
|
||||
}
|
||||
if (do_msinfo) {
|
||||
ret = telltoc_msinfo(drive_list[driveno].drive,
|
||||
msinfo_explicit, msinfo_alone);
|
||||
if (ret<=0)
|
||||
{ret = 38; goto release_drive; }
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
if (toc_failed)
|
||||
ret = 37;
|
||||
release_drive:;
|
||||
if (drive_is_grabbed)
|
||||
burn_drive_release(drive_list[driveno].drive, 0);
|
||||
|
||||
finish_libburn:;
|
||||
/* This app does not bother to know about exact scan state.
|
||||
Better to accept a memory leak here. We are done anyway. */
|
||||
/* burn_drive_info_free(drive_list); */
|
||||
|
||||
burn_finish();
|
||||
exit(ret);
|
||||
}
|
||||
|
||||
/* License and copyright aspects:
|
||||
See libburner.c
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user