475 lines
16 KiB
C
475 lines
16 KiB
C
|
/* libFLAC - Free Lossless Audio Codec library
|
||
|
|
* Copyright (C) 2000,2001,2002,2003,2004,2005 Josh Coalson
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
*
|
||
|
|
* - Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* - Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* - Neither the name of the Xiph.org Foundation nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived from
|
||
|
|
* this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
||
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h> /* for qsort() */
|
||
|
|
#include "FLAC/assert.h"
|
||
|
|
#include "FLAC/format.h"
|
||
|
|
#include "private/format.h"
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include <config.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef min
|
||
|
|
#undef min
|
||
|
|
#endif
|
||
|
|
#define min(a,b) ((a)<(b)?(a):(b))
|
||
|
|
|
||
|
|
/* adjust for compilers that can't understand using LLU suffix for uint64_t literals */
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
#define FLAC__U64L(x) x
|
||
|
|
#else
|
||
|
|
#define FLAC__U64L(x) x##LLU
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* VERSION should come from configure */
|
||
|
|
FLAC_API const char *FLAC__VERSION_STRING = VERSION;
|
||
|
|
|
||
|
|
#if defined _MSC_VER || defined __MINW32__
|
||
|
|
/* yet one more hack because of MSVC6: */
|
||
|
|
FLAC_API const char *FLAC__VENDOR_STRING = "reference libFLAC 1.1.2 20050205";
|
||
|
|
#else
|
||
|
|
FLAC_API const char *FLAC__VENDOR_STRING = "reference libFLAC " VERSION " 20050205";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
FLAC_API const FLAC__byte FLAC__STREAM_SYNC_STRING[4] = { 'f','L','a','C' };
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_SYNC = 0x664C6143;
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_SYNC_LEN = 32; /* bits */;
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN = 16; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN = 16; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN = 24; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN = 24; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN = 20; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN = 3; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN = 5; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN = 36; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MD5SUM_LEN = 128; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_APPLICATION_ID_LEN = 32; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN = 64; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN = 64; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN = 16; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const FLAC__uint64 FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER = FLAC__U64L(0xffffffffffffffff);
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN = 32; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN = 32; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN = 64; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN = 8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN = 3*8; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN = 64; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN = 8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN = 12*8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN = 1; /* bit */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN = 1; /* bit */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN = 6+13*8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN = 8; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN = 128*8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN = 64; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN = 1; /* bit */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN = 7+258*8; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN = 8; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_IS_LAST_LEN = 1; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_TYPE_LEN = 7; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__STREAM_METADATA_LENGTH_LEN = 24; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_SYNC = 0x3ffe;
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_SYNC_LEN = 14; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_RESERVED_LEN = 2; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_BLOCK_SIZE_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_SAMPLE_RATE_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN = 3; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_ZERO_PAD_LEN = 1; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_HEADER_CRC_LEN = 8; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__FRAME_FOOTER_CRC_LEN = 16; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_TYPE_LEN = 2; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN = 5; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER = 15; /* == (1<<FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN)-1 */
|
||
|
|
|
||
|
|
FLAC_API const char * const FLAC__EntropyCodingMethodTypeString[] = {
|
||
|
|
"PARTITIONED_RICE"
|
||
|
|
};
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN = 4; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN = 5; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_ZERO_PAD_LEN = 1; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_TYPE_LEN = 6; /* bits */
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN = 1; /* bits */
|
||
|
|
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_TYPE_CONSTANT_BYTE_ALIGNED_MASK = 0x00;
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_TYPE_VERBATIM_BYTE_ALIGNED_MASK = 0x02;
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_TYPE_FIXED_BYTE_ALIGNED_MASK = 0x10;
|
||
|
|
FLAC_API const unsigned FLAC__SUBFRAME_TYPE_LPC_BYTE_ALIGNED_MASK = 0x40;
|
||
|
|
|
||
|
|
FLAC_API const char * const FLAC__SubframeTypeString[] = {
|
||
|
|
"CONSTANT",
|
||
|
|
"VERBATIM",
|
||
|
|
"FIXED",
|
||
|
|
"LPC"
|
||
|
|
};
|
||
|
|
|
||
|
|
FLAC_API const char * const FLAC__ChannelAssignmentString[] = {
|
||
|
|
"INDEPENDENT",
|
||
|
|
"LEFT_SIDE",
|
||
|
|
"RIGHT_SIDE",
|
||
|
|
"MID_SIDE"
|
||
|
|
};
|
||
|
|
|
||
|
|
FLAC_API const char * const FLAC__FrameNumberTypeString[] = {
|
||
|
|
"FRAME_NUMBER_TYPE_FRAME_NUMBER",
|
||
|
|
"FRAME_NUMBER_TYPE_SAMPLE_NUMBER"
|
||
|
|
};
|
||
|
|
|
||
|
|
FLAC_API const char * const FLAC__MetadataTypeString[] = {
|
||
|
|
"STREAMINFO",
|
||
|
|
"PADDING",
|
||
|
|
"APPLICATION",
|
||
|
|
"SEEKTABLE",
|
||
|
|
"VORBIS_COMMENT",
|
||
|
|
"CUESHEET"
|
||
|
|
};
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate)
|
||
|
|
{
|
||
|
|
if(
|
||
|
|
sample_rate == 0 ||
|
||
|
|
sample_rate > FLAC__MAX_SAMPLE_RATE ||
|
||
|
|
(
|
||
|
|
sample_rate >= (1u << 16) &&
|
||
|
|
!(sample_rate % 1000 == 0 || sample_rate % 10 == 0)
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_seektable_is_legal(const FLAC__StreamMetadata_SeekTable *seek_table)
|
||
|
|
{
|
||
|
|
unsigned i;
|
||
|
|
FLAC__uint64 prev_sample_number = 0;
|
||
|
|
FLAC__bool got_prev = false;
|
||
|
|
|
||
|
|
FLAC__ASSERT(0 != seek_table);
|
||
|
|
|
||
|
|
for(i = 0; i < seek_table->num_points; i++) {
|
||
|
|
if(got_prev) {
|
||
|
|
if(
|
||
|
|
seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER &&
|
||
|
|
seek_table->points[i].sample_number <= prev_sample_number
|
||
|
|
)
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
prev_sample_number = seek_table->points[i].sample_number;
|
||
|
|
got_prev = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* used as the sort predicate for qsort() */
|
||
|
|
static int seekpoint_compare_(const FLAC__StreamMetadata_SeekPoint *l, const FLAC__StreamMetadata_SeekPoint *r)
|
||
|
|
{
|
||
|
|
/* we don't just 'return l->sample_number - r->sample_number' since the result (FLAC__int64) might overflow an 'int' */
|
||
|
|
if(l->sample_number == r->sample_number)
|
||
|
|
return 0;
|
||
|
|
else if(l->sample_number < r->sample_number)
|
||
|
|
return -1;
|
||
|
|
else
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API unsigned FLAC__format_seektable_sort(FLAC__StreamMetadata_SeekTable *seek_table)
|
||
|
|
{
|
||
|
|
unsigned i, j;
|
||
|
|
FLAC__bool first;
|
||
|
|
|
||
|
|
FLAC__ASSERT(0 != seek_table);
|
||
|
|
|
||
|
|
/* sort the seekpoints */
|
||
|
|
qsort(seek_table->points, seek_table->num_points, sizeof(FLAC__StreamMetadata_SeekPoint), (int (*)(const void *, const void *))seekpoint_compare_);
|
||
|
|
|
||
|
|
/* uniquify the seekpoints */
|
||
|
|
first = true;
|
||
|
|
for(i = j = 0; i < seek_table->num_points; i++) {
|
||
|
|
if(seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER) {
|
||
|
|
if(!first) {
|
||
|
|
if(seek_table->points[i].sample_number == seek_table->points[j-1].sample_number)
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
first = false;
|
||
|
|
seek_table->points[j++] = seek_table->points[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
for(i = j; i < seek_table->num_points; i++) {
|
||
|
|
seek_table->points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
|
||
|
|
seek_table->points[i].stream_offset = 0;
|
||
|
|
seek_table->points[i].frame_samples = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return j;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline unsigned utf8len_(const FLAC__byte *utf8)
|
||
|
|
{
|
||
|
|
FLAC__ASSERT(0 != utf8);
|
||
|
|
if ((utf8[0] & 0x80) == 0)
|
||
|
|
return 1;
|
||
|
|
else if ((utf8[0] & 0xE0) == 0xC0 && (utf8[1] & 0xC0) == 0x80)
|
||
|
|
return 2;
|
||
|
|
else if ((utf8[0] & 0xF0) == 0xE0 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80)
|
||
|
|
return 3;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_name_is_legal(const char *name)
|
||
|
|
{
|
||
|
|
char c;
|
||
|
|
for(c = *name; c; c = *(++name))
|
||
|
|
if(c < 0x20 || c == 0x3d || c > 0x7d)
|
||
|
|
return false;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_value_is_legal(const FLAC__byte *value, unsigned length)
|
||
|
|
{
|
||
|
|
if(length == (unsigned)(-1)) {
|
||
|
|
while(*value) {
|
||
|
|
unsigned n = utf8len_(value);
|
||
|
|
if(n == 0)
|
||
|
|
return false;
|
||
|
|
value += n;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
const FLAC__byte *end = value + length;
|
||
|
|
while(value < end) {
|
||
|
|
unsigned n = utf8len_(value);
|
||
|
|
if(n == 0)
|
||
|
|
return false;
|
||
|
|
value += n;
|
||
|
|
}
|
||
|
|
if(value != end)
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_is_legal(const FLAC__byte *entry, unsigned length)
|
||
|
|
{
|
||
|
|
const FLAC__byte *s, *end;
|
||
|
|
|
||
|
|
for(s = entry, end = s + length; s < end && *s != '='; s++) {
|
||
|
|
if(*s < 0x20 || *s > 0x7D)
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if(s == end)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
s++; /* skip '=' */
|
||
|
|
|
||
|
|
while(s < end) {
|
||
|
|
unsigned n = utf8len_(s);
|
||
|
|
if(n == 0)
|
||
|
|
return false;
|
||
|
|
s += n;
|
||
|
|
}
|
||
|
|
if(s != end)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC_API FLAC__bool FLAC__format_cuesheet_is_legal(const FLAC__StreamMetadata_CueSheet *cue_sheet, FLAC__bool check_cd_da_subset, const char **violation)
|
||
|
|
{
|
||
|
|
unsigned i, j;
|
||
|
|
|
||
|
|
if(check_cd_da_subset) {
|
||
|
|
if(cue_sheet->lead_in < 2 * 44100) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet must have a lead-in length of at least 2 seconds";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if(cue_sheet->lead_in % 588 != 0) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet lead-in length must be evenly divisible by 588 samples";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(cue_sheet->num_tracks == 0) {
|
||
|
|
if(violation) *violation = "cue sheet must have at least one track (the lead-out)";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(check_cd_da_subset && cue_sheet->tracks[cue_sheet->num_tracks-1].number != 170) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet must have a lead-out track number 170 (0xAA)";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
for(i = 0; i < cue_sheet->num_tracks; i++) {
|
||
|
|
if(cue_sheet->tracks[i].number == 0) {
|
||
|
|
if(violation) *violation = "cue sheet may not have a track number 0";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(check_cd_da_subset) {
|
||
|
|
if(!((cue_sheet->tracks[i].number >= 1 && cue_sheet->tracks[i].number <= 99) || cue_sheet->tracks[i].number == 170)) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet track number must be 1-99 or 170";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(check_cd_da_subset && cue_sheet->tracks[i].offset % 588 != 0) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet track offset must be evenly divisible by 588 samples";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(i < cue_sheet->num_tracks - 1) {
|
||
|
|
if(cue_sheet->tracks[i].num_indices == 0) {
|
||
|
|
if(violation) *violation = "cue sheet track must have at least one index point";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(cue_sheet->tracks[i].indices[0].number > 1) {
|
||
|
|
if(violation) *violation = "cue sheet track's first index number must be 0 or 1";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for(j = 0; j < cue_sheet->tracks[i].num_indices; j++) {
|
||
|
|
if(check_cd_da_subset && cue_sheet->tracks[i].indices[j].offset % 588 != 0) {
|
||
|
|
if(violation) *violation = "CD-DA cue sheet track index offset must be evenly divisible by 588 samples";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(j > 0) {
|
||
|
|
if(cue_sheet->tracks[i].indices[j].number != cue_sheet->tracks[i].indices[j-1].number + 1) {
|
||
|
|
if(violation) *violation = "cue sheet track index numbers must increase by 1";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These routines are private to libFLAC
|
||
|
|
*/
|
||
|
|
unsigned FLAC__format_get_max_rice_partition_order(unsigned blocksize, unsigned predictor_order)
|
||
|
|
{
|
||
|
|
return
|
||
|
|
FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(
|
||
|
|
FLAC__format_get_max_rice_partition_order_from_blocksize(blocksize),
|
||
|
|
blocksize,
|
||
|
|
predictor_order
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned FLAC__format_get_max_rice_partition_order_from_blocksize(unsigned blocksize)
|
||
|
|
{
|
||
|
|
unsigned max_rice_partition_order = 0;
|
||
|
|
while(!(blocksize & 1)) {
|
||
|
|
max_rice_partition_order++;
|
||
|
|
blocksize >>= 1;
|
||
|
|
}
|
||
|
|
return min(FLAC__MAX_RICE_PARTITION_ORDER, max_rice_partition_order);
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(unsigned limit, unsigned blocksize, unsigned predictor_order)
|
||
|
|
{
|
||
|
|
unsigned max_rice_partition_order = limit;
|
||
|
|
|
||
|
|
while(max_rice_partition_order > 0 && (blocksize >> max_rice_partition_order) <= predictor_order)
|
||
|
|
max_rice_partition_order--;
|
||
|
|
|
||
|
|
FLAC__ASSERT(
|
||
|
|
(max_rice_partition_order == 0 && blocksize >= predictor_order) ||
|
||
|
|
(max_rice_partition_order > 0 && blocksize >> max_rice_partition_order > predictor_order)
|
||
|
|
);
|
||
|
|
|
||
|
|
return max_rice_partition_order;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FLAC__format_entropy_coding_method_partitioned_rice_contents_init(FLAC__EntropyCodingMethod_PartitionedRiceContents *object)
|
||
|
|
{
|
||
|
|
FLAC__ASSERT(0 != object);
|
||
|
|
|
||
|
|
object->parameters = 0;
|
||
|
|
object->raw_bits = 0;
|
||
|
|
object->capacity_by_order = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(FLAC__EntropyCodingMethod_PartitionedRiceContents *object)
|
||
|
|
{
|
||
|
|
FLAC__ASSERT(0 != object);
|
||
|
|
|
||
|
|
if(0 != object->parameters)
|
||
|
|
free(object->parameters);
|
||
|
|
if(0 != object->raw_bits)
|
||
|
|
free(object->raw_bits);
|
||
|
|
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(object);
|
||
|
|
}
|
||
|
|
|
||
|
|
FLAC__bool FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(FLAC__EntropyCodingMethod_PartitionedRiceContents *object, unsigned max_partition_order)
|
||
|
|
{
|
||
|
|
FLAC__ASSERT(0 != object);
|
||
|
|
|
||
|
|
FLAC__ASSERT(object->capacity_by_order > 0 || (0 == object->parameters && 0 == object->raw_bits));
|
||
|
|
|
||
|
|
if(object->capacity_by_order < max_partition_order) {
|
||
|
|
if(0 == (object->parameters = (unsigned*)realloc(object->parameters, sizeof(unsigned)*(1 << max_partition_order))))
|
||
|
|
return false;
|
||
|
|
if(0 == (object->raw_bits = (unsigned*)realloc(object->raw_bits, sizeof(unsigned)*(1 << max_partition_order))))
|
||
|
|
return false;
|
||
|
|
object->capacity_by_order = max_partition_order;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|