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Commit 7cfac0b1 authored by Josh Coalson's avatar Josh Coalson
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add FLAC__metadata_get_cuesheet() and FLAC__metadata_object_cuesheet_calculate_cddb_id()

parent 91018c8e
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doc/html/changelog.html
View file @ 7cfac0b1
......@@ -127,13 +127,15 @@
<li>
libFLAC:
<ul>
<li>(none)</li>
<li><b>Added</b> FLAC__metadata_object_cuesheet_calculate_cddb_id()</li>
<li><b>Added</b> FLAC__metadata_get_cuesheet()</li>
</ul>
</li>
<li>
libFLAC++:
<ul>
<li>(none)</li>
<li><b>Added</b> FLAC::Metadata::CueSheet::calculate_cddb_id()</li>
<li><b>Added</b> FLAC::Metadata::get_cuesheet()</li>
</ul>
</li>
<li>
......
include/FLAC++/metadata.h
View file @ 7cfac0b1
......@@ -777,6 +777,9 @@ namespace FLAC {
//! See FLAC__metadata_object_cuesheet_is_legal()
bool is_legal(bool check_cd_da_subset = false, const char **violation = 0) const;
//! See FLAC__metadata_object_cuesheet_calculate_cddb_id()
FLAC__uint32 calculate_cddb_id() const;
};
/** Opaque metadata block for storing unknown types.
......@@ -859,6 +862,10 @@ namespace FLAC {
FLACPP_API bool get_tags(const char *filename, VorbisComment *&tags);
FLACPP_API bool get_tags(const char *filename, VorbisComment &tags);
//! See FLAC__metadata_get_cuesheet().
FLACPP_API bool get_cuesheet(const char *filename, CueSheet *&cuesheet);
FLACPP_API bool get_cuesheet(const char *filename, CueSheet &cuesheet);
/* \} */
......
include/FLAC/metadata.h
View file @ 7cfac0b1
......@@ -124,15 +124,15 @@ extern "C" {
*
* \brief
* The level 0 interface consists of individual routines to read the
* STREAMINFO and VORBIS_COMMENT blocks, requiring only a filename.
* STREAMINFO, VORBIS_COMMENT, and CUESHEET blocks, requiring only a filename.
*
* It skips any ID3v2 tag at the head of the file.
* They try to skip any ID3v2 tag at the head of the file.
*
* \{
*/
/** Read the STREAMINFO metadata block of the given FLAC file. This function
* will skip any ID3v2 tag at the head of the file.
* will try to skip any ID3v2 tag at the head of the file.
*
* \param filename The path to the FLAC file to read.
* \param streaminfo A pointer to space for the STREAMINFO block. Since
......@@ -151,7 +151,7 @@ extern "C" {
FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo);
/** Read the VORBIS_COMMENT metadata block of the given FLAC file. This
* function will skip any ID3v2 tag at the head of the file.
* function will try to skip any ID3v2 tag at the head of the file.
*
* \param filename The path to the FLAC file to read.
* \param tags The address where the returned pointer will be
......@@ -159,7 +159,7 @@ FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__St
* the caller using FLAC__metadata_object_delete().
* \assert
* \code filename != NULL \endcode
* \code streaminfo != NULL \endcode
* \code tags != NULL \endcode
* \retval FLAC__bool
* \c true if a valid VORBIS_COMMENT block was read from \a filename,
* and \a *tags will be set to the address of the tag structure.
......@@ -169,6 +169,25 @@ FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__St
*/
FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMetadata **tags);
/** Read the CUESHEET metadata block of the given FLAC file. This
* function will try to skip any ID3v2 tag at the head of the file.
*
* \param filename The path to the FLAC file to read.
* \param cuesheet The address where the returned pointer will be
* stored. The \a cuesheet object must be deleted by
* the caller using FLAC__metadata_object_delete().
* \assert
* \code filename != NULL \endcode
* \code cuesheet != NULL \endcode
* \retval FLAC__bool
* \c true if a valid CUESHEET block was read from \a filename,
* and \a *cuesheet will be set to the address of the tag structure.
* Returns \c false if there was a memory allocation error, a file
* decoder error, or the file contained no CUESHEET block, and
* \a *cuesheet will be set to \c NULL.
*/
FLAC_API FLAC__bool FLAC__metadata_get_cuesheet(const char *filename, FLAC__StreamMetadata **cuesheet);
/* \} */
......@@ -1849,6 +1868,20 @@ FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMeta
*/
FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation);
/* @@@@ add to unit tests */
/** Calculate and return the CDDB/freedb ID for a cue sheet. The function
* assumes the cue sheet corresponds to a CD; the result is undefined
* if the cuesheet's is_cd bit is not set.
*
* \param object A pointer to an existing CUESHEET object.
* \assert
* \code object != NULL \endcode
* \code object->type == FLAC__METADATA_TYPE_CUESHEET \endcode
* \retval FLAC__uint32
* The unsigned integer representation of the CDDB/freedb ID
*/
FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object);
/* \} */
#ifdef __cplusplus
......
src/libFLAC++/metadata.cpp
View file @ 7cfac0b1
......@@ -1007,6 +1007,12 @@ namespace FLAC {
return (bool)::FLAC__metadata_object_cuesheet_is_legal(object_, check_cd_da_subset, violation);
}
FLAC__uint32 CueSheet::calculate_cddb_id() const
{
FLAC__ASSERT(is_valid());
return ::FLAC__metadata_object_cuesheet_calculate_cddb_id(object_);
}
//
// Unknown
......@@ -1088,6 +1094,36 @@ namespace FLAC {
return false;
}
FLACPP_API bool get_cuesheet(const char *filename, CueSheet *&cuesheet)
{
FLAC__ASSERT(0 != filename);
::FLAC__StreamMetadata *object;
cuesheet = 0;
if(::FLAC__metadata_get_cuesheet(filename, &object)) {
cuesheet = new CueSheet(object, /*copy=*/false);
return true;
}
else
return false;
}
FLACPP_API bool get_cuesheet(const char *filename, CueSheet &cuesheet)
{
FLAC__ASSERT(0 != filename);
::FLAC__StreamMetadata *object;
if(::FLAC__metadata_get_cuesheet(filename, &object)) {
cuesheet.assign(object, /*copy=*/false);
return true;
}
else
return false;
}
// ============================================================
//
......
src/libFLAC/metadata_iterators.c
View file @ 7cfac0b1
......@@ -153,31 +153,28 @@ static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecode
typedef struct {
FLAC__bool got_error;
FLAC__bool got_object;
FLAC__StreamMetadata *object;
} level0_client_data;
FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo)
static FLAC__StreamMetadata *get_one_metadata_block_(const char *filename, FLAC__MetadataType type)
{
level0_client_data cd;
FLAC__FileDecoder *decoder;
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != streaminfo);
cd.got_error = false;
cd.object = 0;
decoder = FLAC__file_decoder_new();
if(0 == decoder)
return false;
cd.got_error = false;
cd.got_object = false;
cd.object = 0;
return 0;
FLAC__file_decoder_set_md5_checking(decoder, false);
FLAC__file_decoder_set_filename(decoder, filename);
FLAC__file_decoder_set_metadata_ignore_all(decoder);
FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
FLAC__file_decoder_set_metadata_respond(decoder, type);
FLAC__file_decoder_set_write_callback(decoder, write_callback_);
FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
FLAC__file_decoder_set_error_callback(decoder, error_callback_);
......@@ -186,7 +183,7 @@ FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__St
if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK || cd.got_error) {
FLAC__file_decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
return false;
return 0;
}
if(!FLAC__file_decoder_process_until_end_of_metadata(decoder) || cd.got_error) {
......@@ -194,72 +191,53 @@ FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__St
FLAC__file_decoder_delete(decoder);
if(0 != cd.object)
FLAC__metadata_object_delete(cd.object);
return false;
return 0;
}
FLAC__file_decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
if(cd.got_object) {
/* can just copy the contents since STREAMINFO has no internal structure */
*streaminfo = *(cd.object);
}
if(0 != cd.object)
FLAC__metadata_object_delete(cd.object);
return cd.got_object;
return cd.object;
}
FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMetadata **tags)
FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo)
{
level0_client_data cd;
FLAC__FileDecoder *decoder;
FLAC__StreamMetadata *object;
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != tags);
FLAC__ASSERT(0 != streaminfo);
decoder = FLAC__file_decoder_new();
object = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_STREAMINFO);
if(0 == decoder)
if (object) {
/* can just copy the contents since STREAMINFO has no internal structure */
*streaminfo = *object;
FLAC__metadata_object_delete(object);
return true;
}
else {
return false;
}
}
*tags = 0;
cd.got_error = false;
cd.got_object = false;
cd.object = 0;
FLAC__file_decoder_set_md5_checking(decoder, false);
FLAC__file_decoder_set_filename(decoder, filename);
FLAC__file_decoder_set_metadata_ignore_all(decoder);
FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__file_decoder_set_write_callback(decoder, write_callback_);
FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
FLAC__file_decoder_set_error_callback(decoder, error_callback_);
FLAC__file_decoder_set_client_data(decoder, &cd);
FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMetadata **tags)
{
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != tags);
if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK || cd.got_error) {
FLAC__file_decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
return false;
}
*tags = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(!FLAC__file_decoder_process_until_end_of_metadata(decoder) || cd.got_error) {
FLAC__file_decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
if(0 != cd.object)
FLAC__metadata_object_delete(cd.object);
return false;
}
return 0 != *tags;
}
FLAC__file_decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
FLAC_API FLAC__bool FLAC__metadata_get_cuesheet(const char *filename, FLAC__StreamMetadata **cuesheet)
{
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != cuesheet);
if(cd.got_object)
*tags = cd.object;
*cuesheet = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_CUESHEET);
return cd.got_object;
return 0 != *cuesheet;
}
FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
......@@ -278,11 +256,9 @@ void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMeta
* we assume we only get here when the one metadata block we were
* looking for was passed to us
*/
if(!cd->got_object) {
if(!cd->got_error && 0 == cd->object) {
if(0 == (cd->object = FLAC__metadata_object_clone(metadata)))
cd->got_error = true;
else
cd->got_object = true;
}
}
......
src/libFLAC/metadata_object.c
View file @ 7cfac0b1
......@@ -1470,3 +1470,49 @@ FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMe
return FLAC__format_cuesheet_is_legal(&object->data.cue_sheet, check_cd_da_subset, violation);
}
static FLAC__uint64 get_index_01_offset_(const FLAC__StreamMetadata_CueSheet *cs, unsigned track)
{
if (track >= (cs->num_tracks-1) || cs->tracks[track].num_indices < 1)
return 0;
else if (cs->tracks[track].indices[0].number == 1)
return cs->tracks[track].indices[0].offset + cs->tracks[track].offset + cs->lead_in;
else if (cs->tracks[track].num_indices < 2)
return 0;
else if (cs->tracks[track].indices[1].number == 1)
return cs->tracks[track].indices[1].offset + cs->tracks[track].offset + cs->lead_in;
else
return 0;
}
static FLAC__uint32 cddb_add_digits_(FLAC__uint32 x)
{
FLAC__uint32 n = 0;
while (x) {
n += (x%10);
x /= 10;
}
return n;
}
FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object)
{
const FLAC__StreamMetadata_CueSheet *cs;
FLAC__ASSERT(0 != object);
FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
cs = &object->data.cue_sheet;
if (cs->num_tracks < 2) /* need at least one real track and the lead-out track */
return 0;
{
FLAC__uint32 i, length, sum = 0;
for (i = 0; i < (cs->num_tracks-1); i++) /* -1 to avoid counting the lead-out */
sum += cddb_add_digits_((FLAC__uint32)(get_index_01_offset_(cs, i) / 44100));
length = (FLAC__uint32)((cs->tracks[cs->num_tracks-1].offset+cs->lead_in) / 44100) - (FLAC__uint32)(get_index_01_offset_(cs, 0) / 44100);
return (sum % 0xFF) << 24 | length << 8 | (FLAC__uint32)(cs->num_tracks-1);
}
}
src/test_libFLAC++/metadata_manip.cpp
View file @ 7cfac0b1
......@@ -471,10 +471,11 @@ void OurFileDecoder::error_callback(::FLAC__StreamDecoderErrorStatus status)
printf("ERROR: got error callback, status = %s (%u)\n", FLAC__StreamDecoderErrorStatusString[status], (unsigned)status);
}
static bool generate_file_()
static bool generate_file_(FLAC__bool include_cuesheet)
{
::FLAC__StreamMetadata streaminfo, vorbiscomment, padding;
::FLAC__StreamMetadata *metadata[1];
::FLAC__StreamMetadata streaminfo, vorbiscomment, *cuesheet, padding;
::FLAC__StreamMetadata *metadata[3];
unsigned i = 0, n = 0;
printf("generating FLAC file for test\n");
......@@ -497,7 +498,7 @@ static bool generate_file_()
{
const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING);
vorbiscomment.is_last = false;
vorbiscomment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
vorbiscomment.type = ::FLAC__METADATA_TYPE_VORBIS_COMMENT;
vorbiscomment.length = (4 + vendor_string_length) + 4;
vorbiscomment.data.vorbis_comment.vendor_string.length = vendor_string_length;
vorbiscomment.data.vorbis_comment.vendor_string.entry = (FLAC__byte*)malloc_or_die_(vendor_string_length+1);
......@@ -506,23 +507,42 @@ static bool generate_file_()
vorbiscomment.data.vorbis_comment.comments = 0;
}
{
if (0 == (cuesheet = ::FLAC__metadata_object_new(::FLAC__METADATA_TYPE_CUESHEET)))
return die_("priming our metadata");
cuesheet->is_last = false;
strcpy(cuesheet->data.cue_sheet.media_catalog_number, "bogo-MCN");
cuesheet->data.cue_sheet.lead_in = 123;
cuesheet->data.cue_sheet.is_cd = false;
if (!FLAC__metadata_object_cuesheet_insert_blank_track(cuesheet, 0))
return die_("priming our metadata");
cuesheet->data.cue_sheet.tracks[0].number = 1;
if (!FLAC__metadata_object_cuesheet_track_insert_blank_index(cuesheet, 0, 0))
return die_("priming our metadata");
}
padding.is_last = true;
padding.type = ::FLAC__METADATA_TYPE_PADDING;
padding.length = 1234;
metadata[0] = &padding;
metadata[n++] = &vorbiscomment;
if (include_cuesheet)
metadata[n++] = cuesheet;
metadata[n++] = &padding;
FLAC::Metadata::StreamInfo s(&streaminfo);
FLAC::Metadata::VorbisComment v(&vorbiscomment);
FLAC::Metadata::CueSheet c(cuesheet, /*copy=*/false);
FLAC::Metadata::Padding p(&padding);
if(
!insert_to_our_metadata_(&s, 0, /*copy=*/true) ||
!insert_to_our_metadata_(&v, 1, /*copy=*/true) ||
!insert_to_our_metadata_(&p, 2, /*copy=*/true)
!insert_to_our_metadata_(&s, i++, /*copy=*/true) ||
!insert_to_our_metadata_(&v, i++, /*copy=*/true) ||
(include_cuesheet && !insert_to_our_metadata_(&v, i++, /*copy=*/true)) ||
!insert_to_our_metadata_(&p, i++, /*copy=*/true)
)
return die_("priming our metadata");
if(!file_utils__generate_flacfile(flacfile_, 0, 512 * 1024, &streaminfo, metadata, 1))
if(!file_utils__generate_flacfile(flacfile_, 0, 512 * 1024, &streaminfo, metadata, n))
return die_("creating the encoded file");
free(vorbiscomment.data.vorbis_comment.vendor_string.entry);
......@@ -594,7 +614,7 @@ static bool test_level_0_()
printf("\n\n++++++ testing level 0 interface\n");
if(!generate_file_())
if(!generate_file_(/*include_cuesheet=*/true))
return false;
if(!test_file_(flacfile_, /*ignore_metadata=*/true))
......@@ -651,6 +671,38 @@ static bool test_level_0_()
printf("OK\n");
}
{
printf("testing FLAC::Metadata::get_cuesheet(CueSheet *&)... ");
FLAC::Metadata::CueSheet *cuesheet = 0;
if(!FLAC::Metadata::get_cuesheet(flacfile_, cuesheet))
return die_("during FLAC::Metadata::get_cuesheet()");
/* check to see if some basic data matches (c.f. generate_file_()) */
if(cuesheet->get_lead_in() != 123)
return die_("mismatch in cuesheet->get_lead_in()");
printf("OK\n");
delete cuesheet;
}
{
printf("testing FLAC::Metadata::get_cuesheet(CueSheet &)... ");
FLAC::Metadata::CueSheet cuesheet;
if(!FLAC::Metadata::get_cuesheet(flacfile_, cuesheet))
return die_("during FLAC::Metadata::get_cuesheet()");
/* check to see if some basic data matches (c.f. generate_file_()) */
if(cuesheet.get_lead_in() != 123)
return die_("mismatch in cuesheet.get_lead_in()");
printf("OK\n");
}
if(!remove_file_(flacfile_))
return false;
......@@ -675,7 +727,7 @@ static bool test_level_1_()
{
printf("simple iterator on read-only file\n");
if(!generate_file_())
if(!generate_file_(/*include_cuesheet=*/false))
return false;
if(!change_stats_(flacfile_, /*read_only=*/true))
......@@ -1340,7 +1392,7 @@ static bool test_level_2_(bool filename_based)
printf("generate read-only file\n");
if(!generate_file_())
if(!generate_file_(/*include_cuesheet=*/false))
return false;
if(!change_stats_(flacfile_, /*read_only=*/true))
......@@ -1895,7 +1947,7 @@ static bool test_level_2_misc_()
printf("generate file\n");
if(!generate_file_())
if(!generate_file_(/*include_cuesheet=*/false))
return false;
printf("create chain\n");
......
src/test_libFLAC/metadata_manip.c
View file @ 7cfac0b1
......@@ -478,10 +478,11 @@ static void decoder_error_callback_(const FLAC__FileDecoder *decoder, FLAC__Stre
printf("ERROR: got error callback, status = %s (%u)\n", FLAC__StreamDecoderErrorStatusString[status], (unsigned)status);
}
static FLAC__bool generate_file_()
static FLAC__bool generate_file_(FLAC__bool include_cuesheet)
{
FLAC__StreamMetadata streaminfo, vorbiscomment, padding;
FLAC__StreamMetadata *metadata[1];
FLAC__StreamMetadata streaminfo, vorbiscomment, *cuesheet, padding;
FLAC__StreamMetadata *metadata[3];
unsigned i = 0, n = 0;
printf("generating FLAC file for test\n");
......@@ -513,20 +514,38 @@ static FLAC__bool generate_file_()
vorbiscomment.data.vorbis_comment.comments = 0;
}
{
if (0 == (cuesheet = FLAC__metadata_object_new(FLAC__METADATA_TYPE_CUESHEET)))
return die_("priming our metadata");
cuesheet->is_last = false;
strcpy(cuesheet->data.cue_sheet.media_catalog_number, "bogo-MCN");
cuesheet->data.cue_sheet.lead_in = 123;
cuesheet->data.cue_sheet.is_cd = false;
if (!FLAC__metadata_object_cuesheet_insert_blank_track(cuesheet, 0))
return die_("priming our metadata");
cuesheet->data.cue_sheet.tracks[0].number = 1;
if (!FLAC__metadata_object_cuesheet_track_insert_blank_index(cuesheet, 0, 0))
return die_("priming our metadata");
}
padding.is_last = true;
padding.type = FLAC__METADATA_TYPE_PADDING;
padding.length = 1234;
metadata[0] = &padding;
metadata[n++] = &vorbiscomment;
if (include_cuesheet)
metadata[n++] = cuesheet;
metadata[n++] = &padding;
if(
!insert_to_our_metadata_(&streaminfo, 0, /*copy=*/true) ||
!insert_to_our_metadata_(&vorbiscomment, 1, /*copy=*/true) ||
!insert_to_our_metadata_(&padding, 2, /*copy=*/true)
!insert_to_our_metadata_(&streaminfo, i++, /*copy=*/true) ||
!insert_to_our_metadata_(&vorbiscomment, i++, /*copy=*/true) ||
(include_cuesheet && !insert_to_our_metadata_(cuesheet, i++, /*copy=*/false)) ||
!insert_to_our_metadata_(&padding, i++, /*copy=*/true)
)
return die_("priming our metadata");
if(!file_utils__generate_flacfile(flacfile_, 0, 512 * 1024, &streaminfo, metadata, 1))
if(!file_utils__generate_flacfile(flacfile_, 0, 512 * 1024, &streaminfo, metadata, n))
return die_("creating the encoded file");
free(vorbiscomment.data.vorbis_comment.vendor_string.entry);
......@@ -605,10 +624,11 @@ static FLAC__bool test_level_0_()
{
FLAC__StreamMetadata streaminfo;
FLAC__StreamMetadata *tags = 0;
FLAC__StreamMetadata *cuesheet = 0;
printf("\n\n++++++ testing level 0 interface\n");
if(!generate_file_())
if(!generate_file_(/*include_cuesheet=*/true))
return false;
if(!test_file_(flacfile_, decoder_metadata_callback_null_))
......@@ -646,6 +666,19 @@ static FLAC__bool test_level_0_()
FLAC__metadata_object_delete(tags);
printf("testing FLAC__metadata_get_cuesheet()... ");
if(!FLAC__metadata_get_cuesheet(flacfile_, &cuesheet))
return die_("during FLAC__metadata_get_cuesheet()");
/* check to see if some basic data matches (c.f. generate_file_()) */
if(cuesheet->data.cue_sheet.lead_in != 123)