diff options
Diffstat (limited to '3rdparty/libflac/src/libFLAC/format.c')
-rw-r--r-- | 3rdparty/libflac/src/libFLAC/format.c | 593 |
1 files changed, 0 insertions, 593 deletions
diff --git a/3rdparty/libflac/src/libFLAC/format.c b/3rdparty/libflac/src/libFLAC/format.c deleted file mode 100644 index 3480905108a..00000000000 --- a/3rdparty/libflac/src/libFLAC/format.c +++ /dev/null @@ -1,593 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec library - * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 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. - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <stdlib.h> /* for qsort() */ -#include <string.h> /* for memset() */ -#include "FLAC/assert.h" -#include "FLAC/format.h" -#include "private/format.h" - -#ifndef FLaC__INLINE -#define FLaC__INLINE -#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 __BORLANDC__ || defined __MINW32__ -/* yet one more hack because of MSVC6: */ -FLAC_API const char *FLAC__VENDOR_STRING = "reference libFLAC 1.2.1 20070917"; -#else -FLAC_API const char *FLAC__VENDOR_STRING = "reference libFLAC " VERSION " 20070917"; -#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_PICTURE_TYPE_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_COLORS_LEN = 32; /* bits */ -FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN = 32; /* 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 = 1; /* bits */ -FLAC_API const unsigned FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN = 1; /* 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_RICE2_PARAMETER_LEN = 5; /* 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 unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER = 31; /* == (1<<FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN)-1 */ - -FLAC_API const char * const FLAC__EntropyCodingMethodTypeString[] = { - "PARTITIONED_RICE", - "PARTITIONED_RICE2" -}; - -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", - "PICTURE" -}; - -FLAC_API const char * const FLAC__StreamMetadata_Picture_TypeString[] = { - "Other", - "32x32 pixels 'file icon' (PNG only)", - "Other file icon", - "Cover (front)", - "Cover (back)", - "Leaflet page", - "Media (e.g. label side of CD)", - "Lead artist/lead performer/soloist", - "Artist/performer", - "Conductor", - "Band/Orchestra", - "Composer", - "Lyricist/text writer", - "Recording Location", - "During recording", - "During performance", - "Movie/video screen capture", - "A bright coloured fish", - "Illustration", - "Band/artist logotype", - "Publisher/Studio logotype" -}; - -FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate) -{ - if(sample_rate == 0 || sample_rate > FLAC__MAX_SAMPLE_RATE) { - return false; - } - else - return true; -} - -FLAC_API FLAC__bool FLAC__format_sample_rate_is_subset(unsigned sample_rate) -{ - if( - !FLAC__format_sample_rate_is_valid(sample_rate) || - ( - sample_rate >= (1u << 16) && - !(sample_rate % 1000 == 0 || sample_rate % 10 == 0) - ) - ) { - return false; - } - else - return true; -} - -/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */ -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; -} - -/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */ -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; -} - -/* - * also disallows non-shortest-form encodings, c.f. - * http://www.unicode.org/versions/corrigendum1.html - * and a more clear explanation at the end of this section: - * http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 - */ -static FLaC__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) { - if ((utf8[0] & 0xFE) == 0xC0) /* overlong sequence check */ - return 0; - return 2; - } - else if ((utf8[0] & 0xF0) == 0xE0 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80) { - if (utf8[0] == 0xE0 && (utf8[1] & 0xE0) == 0x80) /* overlong sequence check */ - return 0; - /* illegal surrogates check (U+D800...U+DFFF and U+FFFE...U+FFFF) */ - if (utf8[0] == 0xED && (utf8[1] & 0xE0) == 0xA0) /* D800-DFFF */ - return 0; - if (utf8[0] == 0xEF && utf8[1] == 0xBF && (utf8[2] & 0xFE) == 0xBE) /* FFFE-FFFF */ - return 0; - return 3; - } - else if ((utf8[0] & 0xF8) == 0xF0 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80) { - if (utf8[0] == 0xF0 && (utf8[1] & 0xF0) == 0x80) /* overlong sequence check */ - return 0; - return 4; - } - else if ((utf8[0] & 0xFC) == 0xF8 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80 && (utf8[4] & 0xC0) == 0x80) { - if (utf8[0] == 0xF8 && (utf8[1] & 0xF8) == 0x80) /* overlong sequence check */ - return 0; - return 5; - } - else if ((utf8[0] & 0xFE) == 0xFC && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80 && (utf8[4] & 0xC0) == 0x80 && (utf8[5] & 0xC0) == 0x80) { - if (utf8[0] == 0xFC && (utf8[1] & 0xFC) == 0x80) /* overlong sequence check */ - return 0; - return 6; - } - 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; -} - -/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */ -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) { - if(i == cue_sheet->num_tracks-1) /* the lead-out track... */ - *violation = "CD-DA cue sheet lead-out offset must be evenly divisible by 588 samples"; - else - *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; -} - -/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */ -FLAC_API FLAC__bool FLAC__format_picture_is_legal(const FLAC__StreamMetadata_Picture *picture, const char **violation) -{ - char *p; - FLAC__byte *b; - - for(p = picture->mime_type; *p; p++) { - if(*p < 0x20 || *p > 0x7e) { - if(violation) *violation = "MIME type string must contain only printable ASCII characters (0x20-0x7e)"; - return false; - } - } - - for(b = picture->description; *b; ) { - unsigned n = utf8len_(b); - if(n == 0) { - if(violation) *violation = "description string must be valid UTF-8"; - return false; - } - b += n; - } - - 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)*((unsigned long long)1 << max_partition_order)))) - return false; - if(0 == (object->raw_bits = (unsigned*)realloc(object->raw_bits, sizeof(unsigned)*((unsigned long long)1 << max_partition_order)))) - return false; - memset(object->raw_bits, 0, sizeof(unsigned)*((unsigned long long)1 << max_partition_order)); - object->capacity_by_order = max_partition_order; - } - - return true; -} |