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Built SDL2_image and _mixer static

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This commit is contained in:
Alan Youngblood
2022-09-30 15:49:16 -04:00
parent e2605bf6c1
commit 1dec4347e0
4473 changed files with 1964551 additions and 9 deletions
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30
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/Makefile.lite vendored Normal file
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# grabbag - Convenience lib for various routines common to several tools
#
# GNU makefile
#
topdir = ../../..
libdir = $(topdir)/objs/$(BUILD)/lib
ifeq ($(OS),Darwin)
EXPLICIT_LIBS = $(libdir)/libFLAC.a $(libdir)/libreplaygain_analysis.a $(OGG_EXPLICIT_LIBS) -lm
else
LIBS = -lFLAC -lreplaygain_analysis $(OGG_LIBS) -lm
endif
LIB_NAME = libgrabbag
INCLUDES = -I$(topdir)/include
SRCS_C = \
alloc.c \
cuesheet.c \
file.c \
picture.c \
replaygain.c \
seektable.c \
snprintf.c
include $(topdir)/build/lib.mk
# DO NOT DELETE THIS LINE -- make depend depends on it.

48
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/alloc.c vendored Normal file
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/* alloc - Convenience routines for safely allocating memory
* Copyright (C) 2007-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
*
* 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 <stdlib.h>
#include "share/alloc.h"
void *safe_malloc_mul_2op_(size_t size1, size_t size2)
{
if(!size1 || !size2)
return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
if(size1 > SIZE_MAX / size2)
return 0;
return malloc(size1*size2);
}

656
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/cuesheet.c vendored Normal file
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/* 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);
}

193
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/file.c vendored Normal file
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/* 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
#if defined _MSC_VER || defined __MINGW32__
#include <sys/utime.h> /* for utime() */
#include <io.h> /* for chmod(), _setmode(), unlink() */
#include <fcntl.h> /* for _O_BINARY */
#else
#include <sys/types.h> /* some flavors of BSD (like OS X) require this to get time_t */
#include <utime.h> /* for utime() */
#endif
#if defined __CYGWIN__ || defined __EMX__
#include <io.h> /* for setmode(), O_BINARY */
#include <fcntl.h> /* for _O_BINARY */
#endif
#include <sys/stat.h> /* for stat(), maybe chmod() */
#if defined _WIN32 && !defined __CYGWIN__
#else
#include <unistd.h> /* for unlink() */
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h> /* for strrchr() */
#if defined _WIN32 && !defined __CYGWIN__
// for GetFileInformationByHandle() etc
#include <windows.h>
#include <winbase.h>
#endif
#include "share/grabbag.h"
void grabbag__file_copy_metadata(const char *srcpath, const char *destpath)
{
struct flac_stat_s srcstat;
struct utimbuf srctime;
if(0 == flac_stat(srcpath, &srcstat)) {
srctime.actime = srcstat.st_atime;
srctime.modtime = srcstat.st_mtime;
(void)flac_chmod(destpath, srcstat.st_mode);
(void)flac_utime(destpath, &srctime);
}
}
FLAC__off_t grabbag__file_get_filesize(const char *srcpath)
{
struct flac_stat_s srcstat;
if(0 == flac_stat(srcpath, &srcstat))
return srcstat.st_size;
else
return -1;
}
const char *grabbag__file_get_basename(const char *srcpath)
{
const char *p;
p = strrchr(srcpath, '/');
if(0 == p) {
p = strrchr(srcpath, '\\');
if(0 == p)
return srcpath;
}
return ++p;
}
FLAC__bool grabbag__file_change_stats(const char *filename, FLAC__bool read_only)
{
struct flac_stat_s stats;
if(0 == flac_stat(filename, &stats)) {
#if !defined _MSC_VER && !defined __MINGW32__
if(read_only) {
stats.st_mode &= ~S_IWUSR;
stats.st_mode &= ~S_IWGRP;
stats.st_mode &= ~S_IWOTH;
}
else {
stats.st_mode |= S_IWUSR;
}
#else
if(read_only)
stats.st_mode &= ~S_IWRITE;
else
stats.st_mode |= S_IWRITE;
#endif
if(0 != flac_chmod(filename, stats.st_mode))
return false;
}
else
return false;
return true;
}
FLAC__bool grabbag__file_are_same(const char *f1, const char *f2)
{
#if defined _MSC_VER || defined __MINGW32__
/* see
* http://www.hydrogenaudio.org/forums/index.php?showtopic=49439&pid=444300&st=0
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/getfileinformationbyhandle.asp
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/by_handle_file_information_str.asp
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/createfile.asp
* apparently both the files have to be open at the same time for the comparison to work
*/
FLAC__bool same = false;
BY_HANDLE_FILE_INFORMATION info1, info2;
HANDLE h1, h2;
BOOL ok = 1;
h1 = CreateFile_utf8(f1, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
h2 = CreateFile_utf8(f2, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(h1 == INVALID_HANDLE_VALUE || h2 == INVALID_HANDLE_VALUE)
ok = 0;
ok &= GetFileInformationByHandle(h1, &info1);
ok &= GetFileInformationByHandle(h2, &info2);
if(ok)
same =
info1.dwVolumeSerialNumber == info2.dwVolumeSerialNumber &&
info1.nFileIndexHigh == info2.nFileIndexHigh &&
info1.nFileIndexLow == info2.nFileIndexLow
;
if(h1 != INVALID_HANDLE_VALUE)
CloseHandle(h1);
if(h2 != INVALID_HANDLE_VALUE)
CloseHandle(h2);
return same;
#else
struct flac_stat_s s1, s2;
return f1 && f2 && flac_stat(f1, &s1) == 0 && flac_stat(f2, &s2) == 0 && s1.st_ino == s2.st_ino && s1.st_dev == s2.st_dev;
#endif
}
FLAC__bool grabbag__file_remove_file(const char *filename)
{
return grabbag__file_change_stats(filename, /*read_only=*/false) && 0 == flac_unlink(filename);
}
FILE *grabbag__file_get_binary_stdin(void)
{
/* if something breaks here it is probably due to the presence or
* absence of an underscore before the identifiers 'setmode',
* 'fileno', and/or 'O_BINARY'; check your system header files.
*/
#if defined _MSC_VER || defined __MINGW32__
_setmode(_fileno(stdin), _O_BINARY);
#elif defined __CYGWIN__
/* almost certainly not needed for any modern Cygwin, but let's be safe... */
setmode(_fileno(stdin), _O_BINARY);
#elif defined __EMX__
setmode(fileno(stdin), O_BINARY);
#endif
return stdin;
}
FILE *grabbag__file_get_binary_stdout(void)
{
/* if something breaks here it is probably due to the presence or
* absence of an underscore before the identifiers 'setmode',
* 'fileno', and/or 'O_BINARY'; check your system header files.
*/
#if defined _MSC_VER || defined __MINGW32__
_setmode(_fileno(stdout), _O_BINARY);
#elif defined __CYGWIN__
/* almost certainly not needed for any modern Cygwin, but let's be safe... */
setmode(_fileno(stdout), _O_BINARY);
#elif defined __EMX__
setmode(fileno(stdout), O_BINARY);
#endif
return stdout;
}

228
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/grabbag_static.vcproj vendored Normal file
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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
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Keyword="Win32Proj"
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OutputDirectory="$(SolutionDir)objs\$(ConfigurationName)\lib"
IntermediateDirectory="$(ConfigurationName)"
ConfigurationType="4"
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DisableSpecificWarnings="4267;4996"
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Name="VCALinkTool"
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/>
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Name="VCFxCopTool"
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Name="Release|Win32"
OutputDirectory="$(SolutionDir)objs\$(ConfigurationName)\lib"
IntermediateDirectory="$(ConfigurationName)"
ConfigurationType="4"
WholeProgramOptimization="1"
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EnableIntrinsicFunctions="true"
FavorSizeOrSpeed="1"
OmitFramePointers="true"
WholeProgramOptimization="true"
AdditionalIncludeDirectories=".\include;..\..\..\include"
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/>
<Tool
Name="VCBscMakeTool"
/>
<Tool
Name="VCFxCopTool"
/>
<Tool
Name="VCPostBuildEventTool"
/>
</Configuration>
</Configurations>
<References>
</References>
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<Filter
Name="Header Files"
Filter="h;hpp;hxx;hm;inl;inc;xsd"
UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
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Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
>
<File
RelativePath=".\alloc.c"
>
</File>
<File
RelativePath=".\cuesheet.c"
>
</File>
<File
RelativePath=".\file.c"
>
</File>
<File
RelativePath=".\picture.c"
>
</File>
<File
RelativePath=".\replaygain.c"
>
</File>
<File
RelativePath=".\seektable.c"
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</File>
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</Filter>
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Name="Public Header Files"
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161
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/grabbag_static.vcxproj vendored Normal file
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62
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508
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/picture.c vendored Normal file
View File

@@ -0,0 +1,508 @@
/* grabbag - Convenience lib for various routines common to several tools
* Copyright (C) 2006-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; 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 "share/alloc.h"
#include "share/grabbag.h"
#include "FLAC/assert.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "share/compat.h"
#include "share/safe_str.h"
/* slightly different that strndup(): this always copies 'size' bytes starting from s into a NUL-terminated string. */
static char *local__strndup_(const char *s, size_t size)
{
char *x = safe_malloc_add_2op_(size, /*+*/1);
if(x) {
memcpy(x, s, size);
x[size] = '\0';
}
return x;
}
static FLAC__bool local__parse_type_(const char *s, size_t len, FLAC__StreamMetadata_Picture *picture)
{
size_t i;
FLAC__uint32 val = 0;
picture->type = FLAC__STREAM_METADATA_PICTURE_TYPE_FRONT_COVER;
if(len == 0)
return true; /* empty string implies default to 'front cover' */
for(i = 0; i < len; i++) {
if(s[i] >= '0' && s[i] <= '9')
val = 10*val + (FLAC__uint32)(s[i] - '0');
else
return false;
}
if(i == len)
picture->type = val;
else
return false;
return true;
}
static FLAC__bool local__parse_resolution_(const char *s, size_t len, FLAC__StreamMetadata_Picture *picture)
{
int state = 0;
size_t i;
FLAC__uint32 val = 0;
picture->width = picture->height = picture->depth = picture->colors = 0;
if(len == 0)
return true; /* empty string implies client wants to get info from the file itself */
for(i = 0; i < len; i++) {
if(s[i] == 'x') {
if(state == 0)
picture->width = val;
else if(state == 1)
picture->height = val;
else
return false;
state++;
val = 0;
}
else if(s[i] == '/') {
if(state == 2)
picture->depth = val;
else
return false;
state++;
val = 0;
}
else if(s[i] >= '0' && s[i] <= '9')
val = 10*val + (FLAC__uint32)(s[i] - '0');
else
return false;
}
if(state < 2)
return false;
else if(state == 2)
picture->depth = val;
else if(state == 3)
picture->colors = val;
else
return false;
if(picture->depth < 32 && 1u<<picture->depth < picture->colors)
return false;
return true;
}
static FLAC__bool local__extract_mime_type_(FLAC__StreamMetadata *obj)
{
if(obj->data.picture.data_length >= 8 && 0 == memcmp(obj->data.picture.data, "\x89PNG\x0d\x0a\x1a\x0a", 8))
return FLAC__metadata_object_picture_set_mime_type(obj, "image/png", /*copy=*/true);
else if(obj->data.picture.data_length >= 6 && (0 == memcmp(obj->data.picture.data, "GIF87a", 6) || 0 == memcmp(obj->data.picture.data, "GIF89a", 6)))
return FLAC__metadata_object_picture_set_mime_type(obj, "image/gif", /*copy=*/true);
else if(obj->data.picture.data_length >= 2 && 0 == memcmp(obj->data.picture.data, "\xff\xd8", 2))
return FLAC__metadata_object_picture_set_mime_type(obj, "image/jpeg", /*copy=*/true);
return false;
}
static FLAC__bool local__extract_resolution_color_info_(FLAC__StreamMetadata_Picture *picture)
{
const FLAC__byte *data = picture->data;
FLAC__uint32 len = picture->data_length;
if(0 == strcmp(picture->mime_type, "image/png")) {
/* c.f. http://www.w3.org/TR/PNG/ */
FLAC__bool need_palette = false; /* if IHDR has color_type=3, we need to also read the PLTE chunk to get the #colors */
if(len < 8 || memcmp(data, "\x89PNG\x0d\x0a\x1a\x0a", 8))
return false;
/* try to find IHDR chunk */
data += 8;
len -= 8;
while(len > 12) { /* every PNG chunk must be at least 12 bytes long */
const FLAC__uint32 clen = (FLAC__uint32)data[0] << 24 | (FLAC__uint32)data[1] << 16 | (FLAC__uint32)data[2] << 8 | (FLAC__uint32)data[3];
if(0 == memcmp(data+4, "IHDR", 4) && clen == 13) {
unsigned color_type = data[17];
picture->width = (FLAC__uint32)data[8] << 24 | (FLAC__uint32)data[9] << 16 | (FLAC__uint32)data[10] << 8 | (FLAC__uint32)data[11];
picture->height = (FLAC__uint32)data[12] << 24 | (FLAC__uint32)data[13] << 16 | (FLAC__uint32)data[14] << 8 | (FLAC__uint32)data[15];
if(color_type == 3) {
/* even though the bit depth for color_type==3 can be 1,2,4,or 8,
* the spec in 11.2.2 of http://www.w3.org/TR/PNG/ says that the
* sample depth is always 8
*/
picture->depth = 8 * 3u;
need_palette = true;
data += 12 + clen;
len -= 12 + clen;
}
else {
if(color_type == 0) /* greyscale, 1 sample per pixel */
picture->depth = (FLAC__uint32)data[16];
if(color_type == 2) /* truecolor, 3 samples per pixel */
picture->depth = (FLAC__uint32)data[16] * 3u;
if(color_type == 4) /* greyscale+alpha, 2 samples per pixel */
picture->depth = (FLAC__uint32)data[16] * 2u;
if(color_type == 6) /* truecolor+alpha, 4 samples per pixel */
picture->depth = (FLAC__uint32)data[16] * 4u;
picture->colors = 0;
return true;
}
}
else if(need_palette && 0 == memcmp(data+4, "PLTE", 4)) {
picture->colors = clen / 3u;
return true;
}
else if(clen + 12 > len)
return false;
else {
data += 12 + clen;
len -= 12 + clen;
}
}
}
else if(0 == strcmp(picture->mime_type, "image/jpeg")) {
/* c.f. http://www.w3.org/Graphics/JPEG/itu-t81.pdf and Q22 of http://www.faqs.org/faqs/jpeg-faq/part1/ */
if(len < 2 || memcmp(data, "\xff\xd8", 2))
return false;
data += 2;
len -= 2;
while(1) {
/* look for sync FF byte */
for( ; len > 0; data++, len--) {
if(*data == 0xff)
break;
}
if(len == 0)
return false;
/* eat any extra pad FF bytes before marker */
for( ; len > 0; data++, len--) {
if(*data != 0xff)
break;
}
if(len == 0)
return false;
/* if we hit SOS or EOI, bail */
if(*data == 0xda || *data == 0xd9)
return false;
/* looking for some SOFn */
else if(memchr("\xc0\xc1\xc2\xc3\xc5\xc6\xc7\xc9\xca\xcb\xcd\xce\xcf", *data, 13)) {
data++; len--; /* skip marker byte */
if(len < 2)
return false;
else {
const FLAC__uint32 clen = (FLAC__uint32)data[0] << 8 | (FLAC__uint32)data[1];
if(clen < 8 || len < clen)
return false;
picture->width = (FLAC__uint32)data[5] << 8 | (FLAC__uint32)data[6];
picture->height = (FLAC__uint32)data[3] << 8 | (FLAC__uint32)data[4];
picture->depth = (FLAC__uint32)data[2] * (FLAC__uint32)data[7];
picture->colors = 0;
return true;
}
}
/* else skip it */
else {
data++; len--; /* skip marker byte */
if(len < 2)
return false;
else {
const FLAC__uint32 clen = (FLAC__uint32)data[0] << 8 | (FLAC__uint32)data[1];
if(clen < 2 || len < clen)
return false;
data += clen;
len -= clen;
}
}
}
}
else if(0 == strcmp(picture->mime_type, "image/gif")) {
/* c.f. http://www.w3.org/Graphics/GIF/spec-gif89a.txt */
if(len < 14)
return false;
if(memcmp(data, "GIF87a", 6) && memcmp(data, "GIF89a", 6))
return false;
#if 0
/* according to the GIF spec, even if the GCTF is 0, the low 3 bits should still tell the total # colors used */
if(data[10] & 0x80 == 0)
return false;
#endif
picture->width = (FLAC__uint32)data[6] | ((FLAC__uint32)data[7] << 8);
picture->height = (FLAC__uint32)data[8] | ((FLAC__uint32)data[9] << 8);
#if 0
/* this value doesn't seem to be reliable... */
picture->depth = (((FLAC__uint32)(data[10] & 0x70) >> 4) + 1) * 3u;
#else
/* ...just pessimistically assume it's 24-bit color without scanning all the color tables */
picture->depth = 8u * 3u;
#endif
picture->colors = 1u << ((FLAC__uint32)(data[10] & 0x07) + 1u);
return true;
}
return false;
}
static const char *error_messages[] = {
"memory allocation error",
"invalid picture specification",
"invalid picture specification: can't parse resolution/color part",
"unable to extract resolution and color info from URL, user must set explicitly",
"unable to extract resolution and color info from file, user must set explicitly",
"error opening picture file",
"error reading picture file",
"invalid picture type",
"unable to guess MIME type from file, user must set explicitly",
"type 1 icon must be a 32x32 pixel PNG",
"file not found", /* currently unused */
"file is too large"
};
static const char * read_file (const char * filepath, FLAC__StreamMetadata * obj)
{
const FLAC__off_t size = grabbag__file_get_filesize(filepath);
FLAC__byte *buffer;
FILE *file;
const char *error_message=NULL;
if (size < 0)
return error_messages[5];
if (size >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) /* actual limit is less because of other fields in the PICTURE metadata block */
return error_messages[11];
if ((buffer = safe_malloc_(size)) == NULL)
return error_messages[0];
if ((file = flac_fopen(filepath, "rb")) == NULL) {
free(buffer);
return error_messages[5];
}
if (fread(buffer, 1, size, file) != (size_t) size) {
fclose(file);
free(buffer);
return error_messages[6];
}
fclose(file);
if (!FLAC__metadata_object_picture_set_data(obj, buffer, size, /*copy=*/false))
error_message = error_messages[6];
/* try to extract MIME type if user left it blank */
else if (*obj->data.picture.mime_type == '\0' && !local__extract_mime_type_(obj))
error_message = error_messages[8];
/* try to extract resolution/color info if user left it blank */
else if ((obj->data.picture.width == 0 || obj->data.picture.height == 0 || obj->data.picture.depth == 0) && !local__extract_resolution_color_info_(&obj->data.picture))
error_message = error_messages[4];
/* check metadata block size */
else if (obj->length >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN))
error_message = error_messages[11];
return error_message;
}
FLAC__StreamMetadata *grabbag__picture_parse_specification(const char *spec, const char **error_message)
{
FLAC__StreamMetadata *obj;
int state = 0;
FLAC__ASSERT(0 != spec);
FLAC__ASSERT(0 != error_message);
/* double protection */
if(0 == spec)
return 0;
if(0 == error_message)
return 0;
*error_message = 0;
if(0 == (obj = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PICTURE))) {
*error_message = error_messages[0];
return obj;
}
if(strchr(spec, '|')) { /* full format */
const char *p;
char *q;
for(p = spec; *error_message==0 && *p; ) {
if(*p == '|') {
switch(state) {
case 0: /* type */
if(!local__parse_type_(spec, p-spec, &obj->data.picture))
*error_message = error_messages[7];
break;
case 1: /* mime type */
if(p-spec) { /* if blank, we'll try to guess later from the picture data */
if(0 == (q = local__strndup_(spec, p-spec)))
*error_message = error_messages[0];
else if(!FLAC__metadata_object_picture_set_mime_type(obj, q, /*copy=*/false))
*error_message = error_messages[0];
}
break;
case 2: /* description */
if(0 == (q = local__strndup_(spec, p-spec)))
*error_message = error_messages[0];
else if(!FLAC__metadata_object_picture_set_description(obj, (FLAC__byte*)q, /*copy=*/false))
*error_message = error_messages[0];
break;
case 3: /* resolution/color (e.g. [300x300x16[/1234]] */
if(!local__parse_resolution_(spec, p-spec, &obj->data.picture))
*error_message = error_messages[2];
break;
default:
*error_message = error_messages[1];
break;
}
p++;
spec = p;
state++;
}
else
p++;
}
}
else { /* simple format, filename only, everything else guessed */
if(!local__parse_type_("", 0, &obj->data.picture)) /* use default picture type */
*error_message = error_messages[7];
/* leave MIME type to be filled in later */
/* leave description empty */
/* leave the rest to be filled in later: */
else if(!local__parse_resolution_("", 0, &obj->data.picture))
*error_message = error_messages[2];
else
state = 4;
}
/* parse filename, read file, try to extract resolution/color info if needed */
if(*error_message == 0) {
if(state != 4)
*error_message = error_messages[1];
else { /* 'spec' points to filename/URL */
if(0 == strcmp(obj->data.picture.mime_type, "-->")) { /* magic MIME type means URL */
if(!FLAC__metadata_object_picture_set_data(obj, (FLAC__byte*)spec, strlen(spec), /*copy=*/true))
*error_message = error_messages[0];
else if(obj->data.picture.width == 0 || obj->data.picture.height == 0 || obj->data.picture.depth == 0)
*error_message = error_messages[3];
}
else { /* regular picture file */
*error_message = read_file (spec, obj);
}
}
}
if(*error_message == 0) {
if(
obj->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
(
(strcmp(obj->data.picture.mime_type, "image/png") && strcmp(obj->data.picture.mime_type, "-->")) ||
obj->data.picture.width != 32 ||
obj->data.picture.height != 32
)
)
*error_message = error_messages[9];
}
if(*error_message && obj) {
FLAC__metadata_object_delete(obj);
obj = 0;
}
return obj;
}
FLAC__StreamMetadata *grabbag__picture_from_specification(int type, const char *mime_type_in, const char * description,
const PictureResolution * res, const char * filepath, const char **error_message)
{
FLAC__StreamMetadata *obj;
char mime_type [64] ;
if (error_message == 0)
return 0;
safe_strncpy(mime_type, mime_type_in, sizeof (mime_type));
*error_message = 0;
if ((obj = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PICTURE)) == 0) {
*error_message = error_messages[0];
return obj;
}
/* Picture type if known. */
obj->data.picture.type = type >= 0 ? type : FLAC__STREAM_METADATA_PICTURE_TYPE_FRONT_COVER;
/* Mime type if known. */
if (mime_type_in && ! FLAC__metadata_object_picture_set_mime_type(obj, mime_type, /*copy=*/true)) {
*error_message = error_messages[0];
return obj;
}
/* Description if present. */
if (description && ! FLAC__metadata_object_picture_set_description(obj, (FLAC__byte*) description, /*copy=*/true)) {
*error_message = error_messages[0];
return obj;
}
if (res == NULL) {
obj->data.picture.width = 0;
obj->data.picture.height = 0;
obj->data.picture.depth = 0;
obj->data.picture.colors = 0;
}
else {
obj->data.picture.width = res->width;
obj->data.picture.height = res->height;
obj->data.picture.depth = res->depth;
obj->data.picture.colors = res->colors;
}
if (strcmp(obj->data.picture.mime_type, "-->") == 0) { /* magic MIME type means URL */
if (!FLAC__metadata_object_picture_set_data(obj, (FLAC__byte*)filepath, strlen(filepath), /*copy=*/true))
*error_message = error_messages[0];
else if (obj->data.picture.width == 0 || obj->data.picture.height == 0 || obj->data.picture.depth == 0)
*error_message = error_messages[3];
}
else {
*error_message = read_file (filepath, obj);
}
if (*error_message == NULL) {
if (
obj->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
(
(strcmp(obj->data.picture.mime_type, "image/png") && strcmp(obj->data.picture.mime_type, "-->")) ||
obj->data.picture.width != 32 ||
obj->data.picture.height != 32
)
)
*error_message = error_messages[9];
}
if (*error_message && obj) {
FLAC__metadata_object_delete(obj);
obj = 0;
}
return obj;
}

668
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/replaygain.c vendored Normal file
View File

@@ -0,0 +1,668 @@
/* 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 <locale.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined _MSC_VER || defined __MINGW32__
#include <io.h> /* for chmod() */
#endif
#include <sys/stat.h> /* for stat(), maybe chmod() */
#include "FLAC/assert.h"
#include "FLAC/metadata.h"
#include "FLAC/stream_decoder.h"
#include "share/grabbag.h"
#include "share/replaygain_analysis.h"
#include "share/safe_str.h"
#ifdef local_min
#undef local_min
#endif
#define local_min(a,b) ((a)<(b)?(a):(b))
#ifdef local_max
#undef local_max
#endif
#define local_max(a,b) ((a)>(b)?(a):(b))
static const char *reference_format_ = "%s=%2.1f dB";
static const char *gain_format_ = "%s=%+2.2f dB";
static const char *peak_format_ = "%s=%1.8f";
static double album_peak_, title_peak_;
const unsigned GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED = 190;
/*
FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 29 + 1 + 8 +
FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12 +
FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12
*/
const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS = (const FLAC__byte * const)"REPLAYGAIN_REFERENCE_LOUDNESS";
const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN = (const FLAC__byte * const)"REPLAYGAIN_TRACK_GAIN";
const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK = (const FLAC__byte * const)"REPLAYGAIN_TRACK_PEAK";
const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN = (const FLAC__byte * const)"REPLAYGAIN_ALBUM_GAIN";
const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK = (const FLAC__byte * const)"REPLAYGAIN_ALBUM_PEAK";
static FLAC__bool get_file_stats_(const char *filename, struct flac_stat_s *stats)
{
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != stats);
return (0 == flac_stat(filename, stats));
}
static void set_file_stats_(const char *filename, struct flac_stat_s *stats)
{
FLAC__ASSERT(0 != filename);
FLAC__ASSERT(0 != stats);
(void)flac_chmod(filename, stats->st_mode);
}
static FLAC__bool append_tag_(FLAC__StreamMetadata *block, const char *format, const FLAC__byte *name, float value)
{
char buffer[256];
char *saved_locale;
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__ASSERT(0 != format);
FLAC__ASSERT(0 != name);
buffer[sizeof(buffer)-1] = '\0';
/*
* We need to save the old locale and switch to "C" because the locale
* influences the formatting of %f and we want it a certain way.
*/
saved_locale = strdup(setlocale(LC_ALL, 0));
if (0 == saved_locale)
return false;
setlocale(LC_ALL, "C");
flac_snprintf(buffer, sizeof(buffer), format, name, value);
setlocale(LC_ALL, saved_locale);
free(saved_locale);
entry.entry = (FLAC__byte *)buffer;
entry.length = strlen(buffer);
return FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/true);
}
FLAC__bool grabbag__replaygain_is_valid_sample_frequency(unsigned sample_frequency)
{
return ValidGainFrequency( sample_frequency );
}
FLAC__bool grabbag__replaygain_init(unsigned sample_frequency)
{
title_peak_ = album_peak_ = 0.0;
return InitGainAnalysis((long)sample_frequency) == INIT_GAIN_ANALYSIS_OK;
}
FLAC__bool grabbag__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples)
{
/* using a small buffer improves data locality; we'd like it to fit easily in the dcache */
static flac_float_t lbuffer[2048], rbuffer[2048];
static const unsigned nbuffer = sizeof(lbuffer) / sizeof(lbuffer[0]);
FLAC__int32 block_peak = 0, s;
unsigned i, j;
FLAC__ASSERT(bps >= 4 && bps <= FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE);
FLAC__ASSERT(FLAC__MIN_BITS_PER_SAMPLE == 4);
/*
* We use abs() on a FLAC__int32 which is undefined for the most negative value.
* If the reference codec ever handles 32bps we will have to write a special
* case here.
*/
FLAC__ASSERT(FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE < 32);
if(bps == 16) {
if(is_stereo) {
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
s = input[0][j];
lbuffer[i] = (flac_float_t)s;
s = abs(s);
block_peak = local_max(block_peak, s);
s = input[1][j];
rbuffer[i] = (flac_float_t)s;
s = abs(s);
block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
return false;
}
}
else {
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
s = input[0][j];
lbuffer[i] = (flac_float_t)s;
s = abs(s);
block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
return false;
}
}
}
else { /* bps must be < 32 according to above assertion */
const double scale = (
(bps > 16)?
(double)1. / (double)(1u << (bps - 16)) :
(double)(1u << (16 - bps))
);
if(is_stereo) {
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
s = input[0][j];
lbuffer[i] = (flac_float_t)(scale * (double)s);
s = abs(s);
block_peak = local_max(block_peak, s);
s = input[1][j];
rbuffer[i] = (flac_float_t)(scale * (double)s);
s = abs(s);
block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
return false;
}
}
else {
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
s = input[0][j];
lbuffer[i] = (flac_float_t)(scale * (double)s);
s = abs(s);
block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
return false;
}
}
}
{
const double peak_scale = (double)(1u << (bps - 1));
double peak = (double)block_peak / peak_scale;
if(peak > title_peak_)
title_peak_ = peak;
if(peak > album_peak_)
album_peak_ = peak;
}
return true;
}
void grabbag__replaygain_get_album(float *gain, float *peak)
{
*gain = (float)GetAlbumGain();
*peak = (float)album_peak_;
album_peak_ = 0.0;
}
void grabbag__replaygain_get_title(float *gain, float *peak)
{
*gain = (float)GetTitleGain();
*peak = (float)title_peak_;
title_peak_ = 0.0;
}
typedef struct {
unsigned channels;
unsigned bits_per_sample;
unsigned sample_rate;
FLAC__bool error;
} DecoderInstance;
static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
DecoderInstance *instance = (DecoderInstance*)client_data;
const unsigned bits_per_sample = frame->header.bits_per_sample;
const unsigned channels = frame->header.channels;
const unsigned sample_rate = frame->header.sample_rate;
const unsigned samples = frame->header.blocksize;
(void)decoder;
if(
!instance->error &&
(channels == 2 || channels == 1) &&
bits_per_sample == instance->bits_per_sample &&
channels == instance->channels &&
sample_rate == instance->sample_rate
) {
instance->error = !grabbag__replaygain_analyze(buffer, channels==2, bits_per_sample, samples);
}
else {
instance->error = true;
}
if(!instance->error)
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
else
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
DecoderInstance *instance = (DecoderInstance*)client_data;
(void)decoder;
if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
instance->bits_per_sample = metadata->data.stream_info.bits_per_sample;
instance->channels = metadata->data.stream_info.channels;
instance->sample_rate = metadata->data.stream_info.sample_rate;
if(instance->channels != 1 && instance->channels != 2) {
instance->error = true;
return;
}
if(!grabbag__replaygain_is_valid_sample_frequency(instance->sample_rate)) {
instance->error = true;
return;
}
}
}
static void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
DecoderInstance *instance = (DecoderInstance*)client_data;
(void)decoder, (void)status;
instance->error = true;
}
const char *grabbag__replaygain_analyze_file(const char *filename, float *title_gain, float *title_peak)
{
DecoderInstance instance;
FLAC__StreamDecoder *decoder = FLAC__stream_decoder_new();
if(0 == decoder)
return "memory allocation error";
instance.error = false;
/* It does these three by default but lets be explicit: */
FLAC__stream_decoder_set_md5_checking(decoder, false);
FLAC__stream_decoder_set_metadata_ignore_all(decoder);
FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &instance) != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
FLAC__stream_decoder_delete(decoder);
return "initializing decoder";
}
if(!FLAC__stream_decoder_process_until_end_of_stream(decoder) || instance.error) {
FLAC__stream_decoder_delete(decoder);
return "decoding file";
}
FLAC__stream_decoder_delete(decoder);
grabbag__replaygain_get_title(title_gain, title_peak);
return 0;
}
const char *grabbag__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak)
{
const char *error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_reference(block)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak)))
return error;
return 0;
}
const char *grabbag__replaygain_store_to_vorbiscomment_reference(FLAC__StreamMetadata *block)
{
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, (const char *)GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS) < 0)
return "memory allocation error";
if(!append_tag_(block, reference_format_, GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS, ReplayGainReferenceLoudness))
return "memory allocation error";
return 0;
}
const char *grabbag__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak)
{
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, (const char *)GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN) < 0 ||
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, (const char *)GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK) < 0
)
return "memory allocation error";
if(
!append_tag_(block, gain_format_, GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN, album_gain) ||
!append_tag_(block, peak_format_, GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK, album_peak)
)
return "memory allocation error";
return 0;
}
const char *grabbag__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak)
{
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, (const char *)GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN) < 0 ||
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, (const char *)GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK) < 0
)
return "memory allocation error";
if(
!append_tag_(block, gain_format_, GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN, title_gain) ||
!append_tag_(block, peak_format_, GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK, title_peak)
)
return "memory allocation error";
return 0;
}
static const char *store_to_file_pre_(const char *filename, FLAC__Metadata_Chain **chain, FLAC__StreamMetadata **block)
{
FLAC__Metadata_Iterator *iterator;
const char *error;
FLAC__bool found_vc_block = false;
if(0 == (*chain = FLAC__metadata_chain_new()))
return "memory allocation error";
if(!FLAC__metadata_chain_read(*chain, filename)) {
error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
FLAC__metadata_chain_delete(*chain);
return error;
}
if(0 == (iterator = FLAC__metadata_iterator_new())) {
FLAC__metadata_chain_delete(*chain);
return "memory allocation error";
}
FLAC__metadata_iterator_init(iterator, *chain);
do {
*block = FLAC__metadata_iterator_get_block(iterator);
if((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
found_vc_block = true;
} while(!found_vc_block && FLAC__metadata_iterator_next(iterator));
if(!found_vc_block) {
/* create a new block */
*block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(0 == *block) {
FLAC__metadata_chain_delete(*chain);
FLAC__metadata_iterator_delete(iterator);
return "memory allocation error";
}
while(FLAC__metadata_iterator_next(iterator))
;
if(!FLAC__metadata_iterator_insert_block_after(iterator, *block)) {
error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
FLAC__metadata_chain_delete(*chain);
FLAC__metadata_iterator_delete(iterator);
return error;
}
/* iterator is left pointing to new block */
FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == *block);
}
FLAC__metadata_iterator_delete(iterator);
FLAC__ASSERT(0 != *block);
FLAC__ASSERT((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
return 0;
}
static const char *store_to_file_post_(const char *filename, FLAC__Metadata_Chain *chain, FLAC__bool preserve_modtime)
{
struct flac_stat_s stats;
const FLAC__bool have_stats = get_file_stats_(filename, &stats);
(void)grabbag__file_change_stats(filename, /*read_only=*/false);
FLAC__metadata_chain_sort_padding(chain);
if(!FLAC__metadata_chain_write(chain, /*use_padding=*/true, preserve_modtime)) {
const char *error;
error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)];
FLAC__metadata_chain_delete(chain);
return error;
}
FLAC__metadata_chain_delete(chain);
if(have_stats)
set_file_stats_(filename, &stats);
return 0;
}
const char *grabbag__replaygain_store_to_file(const char *filename, float album_gain, float album_peak, float title_gain, float title_peak, FLAC__bool preserve_modtime)
{
FLAC__Metadata_Chain *chain;
FLAC__StreamMetadata *block = NULL;
const char *error;
if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment(block, album_gain, album_peak, title_gain, title_peak))) {
FLAC__metadata_chain_delete(chain);
return error;
}
if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
return error;
return 0;
}
const char *grabbag__replaygain_store_to_file_reference(const char *filename, FLAC__bool preserve_modtime)
{
FLAC__Metadata_Chain *chain;
FLAC__StreamMetadata *block = NULL;
const char *error;
if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_reference(block))) {
FLAC__metadata_chain_delete(chain);
return error;
}
if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
return error;
return 0;
}
const char *grabbag__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime)
{
FLAC__Metadata_Chain *chain;
FLAC__StreamMetadata *block = NULL;
const char *error;
if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak))) {
FLAC__metadata_chain_delete(chain);
return error;
}
if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
return error;
return 0;
}
const char *grabbag__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime)
{
FLAC__Metadata_Chain *chain;
FLAC__StreamMetadata *block = NULL;
const char *error;
if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
return error;
if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak))) {
FLAC__metadata_chain_delete(chain);
return error;
}
if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
return error;
return 0;
}
static FLAC__bool parse_double_(const FLAC__StreamMetadata_VorbisComment_Entry *entry, double *val)
{
char s[32], *end;
const char *p, *q;
double v;
FLAC__ASSERT(0 != entry);
FLAC__ASSERT(0 != val);
p = (const char *)entry->entry;
q = strchr(p, '=');
if(0 == q)
return false;
q++;
safe_strncpy(s, q, local_min(sizeof(s), (size_t) (entry->length - (q-p))));
v = strtod(s, &end);
if(end == s)
return false;
*val = v;
return true;
}
FLAC__bool grabbag__replaygain_load_from_vorbiscomment(const FLAC__StreamMetadata *block, FLAC__bool album_mode, FLAC__bool strict, double *reference, double *gain, double *peak)
{
int reference_offset, gain_offset, peak_offset;
char *saved_locale;
FLAC__bool res = true;
FLAC__ASSERT(0 != block);
FLAC__ASSERT(0 != reference);
FLAC__ASSERT(0 != gain);
FLAC__ASSERT(0 != peak);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
/* Default to current level until overridden by a detected tag; this
* will always be true until we change replaygain_analysis.c
*/
*reference = ReplayGainReferenceLoudness;
/*
* We need to save the old locale and switch to "C" because the locale
* influences the behaviour of strtod and we want it a certain way.
*/
saved_locale = strdup(setlocale(LC_ALL, 0));
if (0 == saved_locale)
return false;
setlocale(LC_ALL, "C");
if(0 <= (reference_offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, /*offset=*/0, (const char *)GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS)))
(void)parse_double_(block->data.vorbis_comment.comments + reference_offset, reference);
if(0 > (gain_offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, /*offset=*/0, (const char *)(album_mode? GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN : GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN))))
res = false;
if(0 > (peak_offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, /*offset=*/0, (const char *)(album_mode? GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK : GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK))))
res = false;
if(res && !parse_double_(block->data.vorbis_comment.comments + gain_offset, gain))
res = false;
if(res && !parse_double_(block->data.vorbis_comment.comments + peak_offset, peak))
res = false;
setlocale(LC_ALL, saved_locale);
free(saved_locale);
/* something failed; retry with strict */
if (!res && !strict)
res = grabbag__replaygain_load_from_vorbiscomment(block, !album_mode, /*strict=*/true, reference, gain, peak);
return res;
}
double grabbag__replaygain_compute_scale_factor(double peak, double gain, double preamp, FLAC__bool prevent_clipping)
{
double scale;
FLAC__ASSERT(peak >= 0.0);
gain += preamp;
scale = (float) pow(10.0, gain * 0.05);
if(prevent_clipping && peak > 0.0) {
const double max_scale = (float)(1.0 / peak);
if(scale > max_scale)
scale = max_scale;
}
return scale;
}

106
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/seektable.c vendored Normal file
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/* 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 "share/grabbag.h"
#include "share/compat.h"
#include "FLAC/assert.h"
#include <stdlib.h> /* for atoi() */
#include <string.h>
FLAC__bool grabbag__seektable_convert_specification_to_template(const char *spec, FLAC__bool only_explicit_placeholders, FLAC__uint64 total_samples_to_encode, unsigned sample_rate, FLAC__StreamMetadata *seektable_template, FLAC__bool *spec_has_real_points)
{
unsigned i;
const char *pt;
FLAC__ASSERT(0 != spec);
FLAC__ASSERT(0 != seektable_template);
FLAC__ASSERT(seektable_template->type == FLAC__METADATA_TYPE_SEEKTABLE);
if(0 != spec_has_real_points)
*spec_has_real_points = false;
for(pt = spec, i = 0; pt && *pt; i++) {
const char *q = strchr(pt, ';');
FLAC__ASSERT(0 != q);
if(q > pt) {
if(0 == strncmp(pt, "X;", 2)) { /* -S X */
if(!FLAC__metadata_object_seektable_template_append_placeholders(seektable_template, 1))
return false;
}
else if(q[-1] == 'x') { /* -S #x */
if(total_samples_to_encode > 0) { /* we can only do these if we know the number of samples to encode up front */
if(0 != spec_has_real_points)
*spec_has_real_points = true;
if(!only_explicit_placeholders) {
const int n = (unsigned)atoi(pt);
if(n > 0)
if(!FLAC__metadata_object_seektable_template_append_spaced_points(seektable_template, (unsigned)n, total_samples_to_encode))
return false;
}
}
}
else if(q[-1] == 's') { /* -S #s */
if(total_samples_to_encode > 0) { /* we can only do these if we know the number of samples to encode up front */
FLAC__ASSERT(sample_rate > 0);
if(0 != spec_has_real_points)
*spec_has_real_points = true;
if(!only_explicit_placeholders) {
const double sec = atof(pt);
if(sec > 0.0) {
unsigned samples = (unsigned)(sec * (double)sample_rate);
/* Restrict seekpoints to two per second of audio. */
samples = samples < sample_rate / 2 ? sample_rate / 2 : samples;
if(samples > 0) {
/* +1 for the initial point at sample 0 */
if(!FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(seektable_template, samples, total_samples_to_encode))
return false;
}
}
}
}
}
else { /* -S # */
if(0 != spec_has_real_points)
*spec_has_real_points = true;
if(!only_explicit_placeholders) {
char *endptr;
const FLAC__int64 n = (FLAC__int64)strtoll(pt, &endptr, 10);
if(
(n > 0 || (endptr > pt && *endptr == ';')) && /* is a valid number (extra check needed for "0") */
(total_samples_to_encode == 0 || (FLAC__uint64)n < total_samples_to_encode) /* number is not >= the known total_samples_to_encode */
)
if(!FLAC__metadata_object_seektable_template_append_point(seektable_template, (FLAC__uint64)n))
return false;
}
}
}
pt = ++q;
}
if(!FLAC__metadata_object_seektable_template_sort(seektable_template, /*compact=*/true))
return false;
return true;
}

101
libsdl2_mixer/external/flac-1.3.2/src/share/grabbag/snprintf.c vendored Normal file
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/* grabbag - Convenience lib for various routines common to several tools
* Copyright (C) 2013-2016 Xiph.org Foundation
*
* 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 <stdarg.h>
#include "share/compat.h"
/*
* FLAC needs to compile and work correctly on systems with a normal ISO C99
* snprintf as well as Microsoft Visual Studio which has an non-standards
* conformant snprint_s function.
*
* The important difference occurs when the resultant string (plus string
* terminator) would have been longer than the supplied size parameter. When
* this happens, ISO C's snprintf returns the length of resultant string, but
* does not over-write the end of the buffer. MS's snprintf_s in this case
* returns -1.
*
* The _MSC_VER code below attempts to modify the return code for vsnprintf_s
* to something that is more compatible with the behaviour of the ISO C version.
*/
int
flac_snprintf(char *str, size_t size, const char *fmt, ...)
{
va_list va;
int rc;
#if defined _MSC_VER
if (size == 0)
return 1024;
#endif
va_start (va, fmt);
#if defined _MSC_VER
rc = vsnprintf_s (str, size, _TRUNCATE, fmt, va);
if (rc < 0)
rc = size - 1;
#elif defined __MINGW32__
rc = __mingw_vsnprintf (str, size, fmt, va);
#else
rc = vsnprintf (str, size, fmt, va);
#endif
va_end (va);
return rc;
}
int
flac_vsnprintf(char *str, size_t size, const char *fmt, va_list va)
{
int rc;
#if defined _MSC_VER
if (size == 0)
return 1024;
rc = vsnprintf_s (str, size, _TRUNCATE, fmt, va);
if (rc < 0)
rc = size - 1;
#elif defined __MINGW32__
rc = __mingw_vsnprintf (str, size, fmt, va);
#else
rc = vsnprintf (str, size, fmt, va);
#endif
return rc;
}