diff options
Diffstat (limited to 'deps/flac-1.3.2/src/share/grabbag/cuesheet.c')
| -rw-r--r-- | deps/flac-1.3.2/src/share/grabbag/cuesheet.c | 656 |
1 files changed, 0 insertions, 656 deletions
diff --git a/deps/flac-1.3.2/src/share/grabbag/cuesheet.c b/deps/flac-1.3.2/src/share/grabbag/cuesheet.c deleted file mode 100644 index 78473d8..0000000 --- a/deps/flac-1.3.2/src/share/grabbag/cuesheet.c +++ /dev/null @@ -1,656 +0,0 @@ -/* grabbag - Convenience lib for various routines common to several tools - * Copyright (C) 2002-2009 Josh Coalson - * Copyright (C) 2011-2016 Xiph.Org Foundation - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "FLAC/assert.h" -#include "share/compat.h" -#include "share/grabbag.h" -#include "share/safe_str.h" - -unsigned grabbag__cuesheet_msf_to_frame(unsigned minutes, unsigned seconds, unsigned frames) -{ - return ((minutes * 60) + seconds) * 75 + frames; -} - -void grabbag__cuesheet_frame_to_msf(unsigned frame, unsigned *minutes, unsigned *seconds, unsigned *frames) -{ - *frames = frame % 75; - frame /= 75; - *seconds = frame % 60; - frame /= 60; - *minutes = frame; -} - -/* since we only care about values >= 0 or error, returns < 0 for any illegal string, else value */ -static int local__parse_int_(const char *s) -{ - int ret = 0; - char c; - - if(*s == '\0') - return -1; - - while('\0' != (c = *s++)) - if(c >= '0' && c <= '9') - ret = ret * 10 + (c - '0'); - else - return -1; - - return ret; -} - -/* since we only care about values >= 0 or error, returns < 0 for any illegal string, else value */ -static FLAC__int64 local__parse_int64_(const char *s) -{ - FLAC__int64 ret = 0; - char c; - - if(*s == '\0') - return -1; - - while('\0' != (c = *s++)) - if(c >= '0' && c <= '9') - ret = ret * 10 + (c - '0'); - else - return -1; - - return ret; -} - -/* accept minute:second:frame syntax of '[0-9]+:[0-9][0-9]?:[0-9][0-9]?', but max second of 59 and max frame of 74, e.g. 0:0:0, 123:45:67 - * return sample number or <0 for error - * WATCHOUT: if sample rate is not evenly divisible by 75, the resulting sample number will be approximate - */ -static FLAC__int64 local__parse_msf_(const char *s, unsigned sample_rate) -{ - FLAC__int64 ret, field; - char c; - - c = *s++; - if(c >= '0' && c <= '9') - field = (c - '0'); - else - return -1; - while(':' != (c = *s++)) { - if(c >= '0' && c <= '9') - field = field * 10 + (c - '0'); - else - return -1; - } - - ret = field * 60 * sample_rate; - - c = *s++; - if(c >= '0' && c <= '9') - field = (c - '0'); - else - return -1; - if(':' != (c = *s++)) { - if(c >= '0' && c <= '9') { - field = field * 10 + (c - '0'); - c = *s++; - if(c != ':') - return -1; - } - else - return -1; - } - - if(field >= 60) - return -1; - - ret += field * sample_rate; - - c = *s++; - if(c >= '0' && c <= '9') - field = (c - '0'); - else - return -1; - if('\0' != (c = *s++)) { - if(c >= '0' && c <= '9') { - field = field * 10 + (c - '0'); - c = *s++; - } - else - return -1; - } - - if(c != '\0') - return -1; - - if(field >= 75) - return -1; - - ret += field * (sample_rate / 75); - - return ret; -} - -/* accept minute:second syntax of '[0-9]+:[0-9][0-9]?{,.[0-9]+}', but second < 60, e.g. 0:0.0, 3:5, 15:31.731 - * return sample number or <0 for error - * WATCHOUT: depending on the sample rate, the resulting sample number may be approximate with fractional seconds - */ -static FLAC__int64 local__parse_ms_(const char *s, unsigned sample_rate) -{ - FLAC__int64 ret, field; - double x; - char c, *end; - - c = *s++; - if(c >= '0' && c <= '9') - field = (c - '0'); - else - return -1; - while(':' != (c = *s++)) { - if(c >= '0' && c <= '9') - field = field * 10 + (c - '0'); - else - return -1; - } - - ret = field * 60 * sample_rate; - - s++; /* skip the ':' */ - if(strspn(s, "0123456789.") != strlen(s)) - return -1; - x = strtod(s, &end); - if(*end || end == s) - return -1; - if(x < 0.0 || x >= 60.0) - return -1; - - ret += (FLAC__int64)(x * sample_rate); - - return ret; -} - -static char *local__get_field_(char **s, FLAC__bool allow_quotes) -{ - FLAC__bool has_quote = false; - char *p; - - FLAC__ASSERT(0 != s); - - if(0 == *s) - return 0; - - /* skip leading whitespace */ - while(**s && 0 != strchr(" \t\r\n", **s)) - (*s)++; - - if(**s == 0) { - *s = 0; - return 0; - } - - if(allow_quotes && (**s == '"')) { - has_quote = true; - (*s)++; - if(**s == 0) { - *s = 0; - return 0; - } - } - - p = *s; - - if(has_quote) { - *s = strchr(*s, '\"'); - /* if there is no matching end quote, it's an error */ - if(0 == *s) - p = *s = 0; - else { - **s = '\0'; - (*s)++; - } - } - else { - while(**s && 0 == strchr(" \t\r\n", **s)) - (*s)++; - if(**s) { - **s = '\0'; - (*s)++; - } - else - *s = 0; - } - - return p; -} - -static FLAC__bool local__cuesheet_parse_(FILE *file, const char **error_message, unsigned *last_line_read, FLAC__StreamMetadata *cuesheet, unsigned sample_rate, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset) -{ - char buffer[4096], *line, *field; - unsigned forced_leadout_track_num = 0; - FLAC__uint64 forced_leadout_track_offset = 0; - int in_track_num = -1, in_index_num = -1; - FLAC__bool disc_has_catalog = false, track_has_flags = false, track_has_isrc = false, has_forced_leadout = false; - FLAC__StreamMetadata_CueSheet *cs = &cuesheet->data.cue_sheet; - - FLAC__ASSERT(!is_cdda || sample_rate == 44100); - /* double protection */ - if(is_cdda && sample_rate != 44100) { - *error_message = "CD-DA cuesheet only allowed with 44.1kHz sample rate"; - return false; - } - - cs->lead_in = is_cdda? 2 * 44100 /* The default lead-in size for CD-DA */ : 0; - cs->is_cd = is_cdda; - - while(0 != fgets(buffer, sizeof(buffer), file)) { - (*last_line_read)++; - line = buffer; - - { - size_t linelen = strlen(line); - if((linelen == sizeof(buffer)-1) && line[linelen-1] != '\n') { - *error_message = "line too long"; - return false; - } - } - - if(0 != (field = local__get_field_(&line, /*allow_quotes=*/false))) { - if(0 == FLAC__STRCASECMP(field, "CATALOG")) { - if(disc_has_catalog) { - *error_message = "found multiple CATALOG commands"; - return false; - } - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/true))) { - *error_message = "CATALOG is missing catalog number"; - return false; - } - if(strlen(field) >= sizeof(cs->media_catalog_number)) { - *error_message = "CATALOG number is too long"; - return false; - } - if(is_cdda && (strlen(field) != 13 || strspn(field, "0123456789") != 13)) { - *error_message = "CD-DA CATALOG number must be 13 decimal digits"; - return false; - } - safe_strncpy(cs->media_catalog_number, field, sizeof(cs->media_catalog_number)); - disc_has_catalog = true; - } - else if(0 == FLAC__STRCASECMP(field, "FLAGS")) { - if(track_has_flags) { - *error_message = "found multiple FLAGS commands"; - return false; - } - if(in_track_num < 0 || in_index_num >= 0) { - *error_message = "FLAGS command must come after TRACK but before INDEX"; - return false; - } - while(0 != (field = local__get_field_(&line, /*allow_quotes=*/false))) { - if(0 == FLAC__STRCASECMP(field, "PRE")) - cs->tracks[cs->num_tracks-1].pre_emphasis = 1; - } - track_has_flags = true; - } - else if(0 == FLAC__STRCASECMP(field, "INDEX")) { - FLAC__int64 xx; - FLAC__StreamMetadata_CueSheet_Track *track = &cs->tracks[cs->num_tracks-1]; - if(in_track_num < 0) { - *error_message = "found INDEX before any TRACK"; - return false; - } - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "INDEX is missing index number"; - return false; - } - in_index_num = local__parse_int_(field); - if(in_index_num < 0) { - *error_message = "INDEX has invalid index number"; - return false; - } - FLAC__ASSERT(cs->num_tracks > 0); - if(track->num_indices == 0) { - /* it's the first index point of the track */ - if(in_index_num > 1) { - *error_message = "first INDEX number of a TRACK must be 0 or 1"; - return false; - } - } - else { - if(in_index_num != track->indices[track->num_indices-1].number + 1) { - *error_message = "INDEX numbers must be sequential"; - return false; - } - } - if(is_cdda && in_index_num > 99) { - *error_message = "CD-DA INDEX number must be between 0 and 99, inclusive"; - return false; - } - /*@@@ search for duplicate track number? */ - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "INDEX is missing an offset after the index number"; - return false; - } - /* first parse as minute:second:frame format */ - xx = local__parse_msf_(field, sample_rate); - if(xx < 0) { - /* CD-DA must use only MM:SS:FF format */ - if(is_cdda) { - *error_message = "illegal INDEX offset (not of the form MM:SS:FF)"; - return false; - } - /* as an extension for non-CD-DA we allow MM:SS.SS or raw sample number */ - xx = local__parse_ms_(field, sample_rate); - if(xx < 0) { - xx = local__parse_int64_(field); - if(xx < 0) { - *error_message = "illegal INDEX offset"; - return false; - } - } - } - else if(sample_rate % 75 && xx) { - /* only sample zero is exact */ - *error_message = "illegal INDEX offset (MM:SS:FF form not allowed if sample rate is not a multiple of 75)"; - return false; - } - if(is_cdda && cs->num_tracks == 1 && cs->tracks[0].num_indices == 0 && xx != 0) { - *error_message = "first INDEX of first TRACK must have an offset of 00:00:00"; - return false; - } - if(is_cdda && track->num_indices > 0 && (FLAC__uint64)xx <= track->indices[track->num_indices-1].offset) { - *error_message = "CD-DA INDEX offsets must increase in time"; - return false; - } - /* fill in track offset if it's the first index of the track */ - if(track->num_indices == 0) - track->offset = (FLAC__uint64)xx; - if(is_cdda && cs->num_tracks > 1) { - const FLAC__StreamMetadata_CueSheet_Track *prev = &cs->tracks[cs->num_tracks-2]; - if((FLAC__uint64)xx <= prev->offset + prev->indices[prev->num_indices-1].offset) { - *error_message = "CD-DA INDEX offsets must increase in time"; - return false; - } - } - if(!FLAC__metadata_object_cuesheet_track_insert_blank_index(cuesheet, cs->num_tracks-1, track->num_indices)) { - *error_message = "memory allocation error"; - return false; - } - track->indices[track->num_indices-1].offset = (FLAC__uint64)xx - track->offset; - track->indices[track->num_indices-1].number = in_index_num; - } - else if(0 == FLAC__STRCASECMP(field, "ISRC")) { - char *l, *r; - if(track_has_isrc) { - *error_message = "found multiple ISRC commands"; - return false; - } - if(in_track_num < 0 || in_index_num >= 0) { - *error_message = "ISRC command must come after TRACK but before INDEX"; - return false; - } - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/true))) { - *error_message = "ISRC is missing ISRC number"; - return false; - } - /* strip out dashes */ - for(l = r = field; *r; r++) { - if(*r != '-') - *l++ = *r; - } - *l = '\0'; - if(strlen(field) != 12 || strspn(field, "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") < 5 || strspn(field+5, "1234567890") != 7) { - *error_message = "invalid ISRC number"; - return false; - } - safe_strncpy(cs->tracks[cs->num_tracks-1].isrc, field, sizeof(cs->tracks[cs->num_tracks-1].isrc)); - track_has_isrc = true; - } - else if(0 == FLAC__STRCASECMP(field, "TRACK")) { - if(cs->num_tracks > 0) { - const FLAC__StreamMetadata_CueSheet_Track *prev = &cs->tracks[cs->num_tracks-1]; - if( - prev->num_indices == 0 || - ( - is_cdda && - ( - (prev->num_indices == 1 && prev->indices[0].number != 1) || - (prev->num_indices == 2 && prev->indices[0].number != 1 && prev->indices[1].number != 1) - ) - ) - ) { - *error_message = is_cdda? - "previous TRACK must specify at least one INDEX 01" : - "previous TRACK must specify at least one INDEX"; - return false; - } - } - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "TRACK is missing track number"; - return false; - } - in_track_num = local__parse_int_(field); - if(in_track_num < 0) { - *error_message = "TRACK has invalid track number"; - return false; - } - if(in_track_num == 0) { - *error_message = "TRACK number must be greater than 0"; - return false; - } - if(is_cdda) { - if(in_track_num > 99) { - *error_message = "CD-DA TRACK number must be between 1 and 99, inclusive"; - return false; - } - } - else { - if(in_track_num == 255) { - *error_message = "TRACK number 255 is reserved for the lead-out"; - return false; - } - else if(in_track_num > 255) { - *error_message = "TRACK number must be between 1 and 254, inclusive"; - return false; - } - } - if(is_cdda && cs->num_tracks > 0 && in_track_num != cs->tracks[cs->num_tracks-1].number + 1) { - *error_message = "CD-DA TRACK numbers must be sequential"; - return false; - } - /*@@@ search for duplicate track number? */ - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "TRACK is missing a track type after the track number"; - return false; - } - if(!FLAC__metadata_object_cuesheet_insert_blank_track(cuesheet, cs->num_tracks)) { - *error_message = "memory allocation error"; - return false; - } - cs->tracks[cs->num_tracks-1].number = in_track_num; - cs->tracks[cs->num_tracks-1].type = (0 == FLAC__STRCASECMP(field, "AUDIO"))? 0 : 1; /*@@@ should we be more strict with the value here? */ - in_index_num = -1; - track_has_flags = false; - track_has_isrc = false; - } - else if(0 == FLAC__STRCASECMP(field, "REM")) { - if(0 != (field = local__get_field_(&line, /*allow_quotes=*/false))) { - if(0 == strcmp(field, "FLAC__lead-in")) { - FLAC__int64 xx; - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "FLAC__lead-in is missing offset"; - return false; - } - xx = local__parse_int64_(field); - if(xx < 0) { - *error_message = "illegal FLAC__lead-in offset"; - return false; - } - if(is_cdda && xx % 588 != 0) { - *error_message = "illegal CD-DA FLAC__lead-in offset, must be even multiple of 588 samples"; - return false; - } - cs->lead_in = (FLAC__uint64)xx; - } - else if(0 == strcmp(field, "FLAC__lead-out")) { - int track_num; - FLAC__int64 offset; - if(has_forced_leadout) { - *error_message = "multiple FLAC__lead-out commands"; - return false; - } - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "FLAC__lead-out is missing track number"; - return false; - } - track_num = local__parse_int_(field); - if(track_num < 0) { - *error_message = "illegal FLAC__lead-out track number"; - return false; - } - forced_leadout_track_num = (unsigned)track_num; - /*@@@ search for duplicate track number? */ - if(0 == (field = local__get_field_(&line, /*allow_quotes=*/false))) { - *error_message = "FLAC__lead-out is missing offset"; - return false; - } - offset = local__parse_int64_(field); - if(offset < 0) { - *error_message = "illegal FLAC__lead-out offset"; - return false; - } - forced_leadout_track_offset = (FLAC__uint64)offset; - if(forced_leadout_track_offset != lead_out_offset) { - *error_message = "FLAC__lead-out offset does not match end-of-stream offset"; - return false; - } - has_forced_leadout = true; - } - } - } - } - } - - if(cs->num_tracks == 0) { - *error_message = "there must be at least one TRACK command"; - return false; - } - else { - const FLAC__StreamMetadata_CueSheet_Track *prev = &cs->tracks[cs->num_tracks-1]; - if( - prev->num_indices == 0 || - ( - is_cdda && - ( - (prev->num_indices == 1 && prev->indices[0].number != 1) || - (prev->num_indices == 2 && prev->indices[0].number != 1 && prev->indices[1].number != 1) - ) - ) - ) { - *error_message = is_cdda? - "previous TRACK must specify at least one INDEX 01" : - "previous TRACK must specify at least one INDEX"; - return false; - } - } - - if(!has_forced_leadout) { - forced_leadout_track_num = is_cdda? 170 : 255; - forced_leadout_track_offset = lead_out_offset; - } - if(!FLAC__metadata_object_cuesheet_insert_blank_track(cuesheet, cs->num_tracks)) { - *error_message = "memory allocation error"; - return false; - } - cs->tracks[cs->num_tracks-1].number = forced_leadout_track_num; - cs->tracks[cs->num_tracks-1].offset = forced_leadout_track_offset; - - if(!feof(file)) { - *error_message = "read error"; - return false; - } - return true; -} - -FLAC__StreamMetadata *grabbag__cuesheet_parse(FILE *file, const char **error_message, unsigned *last_line_read, unsigned sample_rate, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset) -{ - FLAC__StreamMetadata *cuesheet; - - FLAC__ASSERT(0 != file); - FLAC__ASSERT(0 != error_message); - FLAC__ASSERT(0 != last_line_read); - - *last_line_read = 0; - cuesheet = FLAC__metadata_object_new(FLAC__METADATA_TYPE_CUESHEET); - - if(0 == cuesheet) { - *error_message = "memory allocation error"; - return 0; - } - - if(!local__cuesheet_parse_(file, error_message, last_line_read, cuesheet, sample_rate, is_cdda, lead_out_offset)) { - FLAC__metadata_object_delete(cuesheet); - return 0; - } - - return cuesheet; -} - -void grabbag__cuesheet_emit(FILE *file, const FLAC__StreamMetadata *cuesheet, const char *file_reference) -{ - const FLAC__StreamMetadata_CueSheet *cs; - unsigned track_num, index_num; - - FLAC__ASSERT(0 != file); - FLAC__ASSERT(0 != cuesheet); - FLAC__ASSERT(cuesheet->type == FLAC__METADATA_TYPE_CUESHEET); - - cs = &cuesheet->data.cue_sheet; - - if(*(cs->media_catalog_number)) - fprintf(file, "CATALOG %s\n", cs->media_catalog_number); - fprintf(file, "FILE %s\n", file_reference); - - for(track_num = 0; track_num < cs->num_tracks-1; track_num++) { - const FLAC__StreamMetadata_CueSheet_Track *track = cs->tracks + track_num; - - fprintf(file, " TRACK %02u %s\n", (unsigned)track->number, track->type == 0? "AUDIO" : "DATA"); - - if(track->pre_emphasis) - fprintf(file, " FLAGS PRE\n"); - if(*(track->isrc)) - fprintf(file, " ISRC %s\n", track->isrc); - - for(index_num = 0; index_num < track->num_indices; index_num++) { - const FLAC__StreamMetadata_CueSheet_Index *indx = track->indices + index_num; - - fprintf(file, " INDEX %02u ", (unsigned)indx->number); - if(cs->is_cd) { - const unsigned logical_frame = (unsigned)((track->offset + indx->offset) / (44100 / 75)); - unsigned m, s, f; - grabbag__cuesheet_frame_to_msf(logical_frame, &m, &s, &f); - fprintf(file, "%02u:%02u:%02u\n", m, s, f); - } - else - fprintf(file, "%" PRIu64 "\n", (track->offset + indx->offset)); - } - } - - fprintf(file, "REM FLAC__lead-in %" PRIu64 "\n", cs->lead_in); - fprintf(file, "REM FLAC__lead-out %u %" PRIu64 "\n", (unsigned)cs->tracks[track_num].number, cs->tracks[track_num].offset); -} |