summaryrefslogtreecommitdiff
path: root/src/music.cpp
blob: 66ac2b511bcdc12021c41d268a69075aa7353da8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file music.cpp The songs that OpenTTD knows. */

#include "stdafx.h"


/** The type of set we're replacing */
#define SET_TYPE "music"
#include "base_media_func.h"

#include "safeguards.h"
#include "fios.h"


/**
 * Read the name of a music CAT file entry.
 * @param filename Name of CAT file to read from
 * @param entrynum Index of entry whose name to read
 * @return Pointer to string, caller is responsible for freeing memory,
 *         nullptr if entrynum does not exist.
 */
char *GetMusicCatEntryName(const char *filename, size_t entrynum)
{
	if (!FioCheckFileExists(filename, BASESET_DIR)) return nullptr;

	FioOpenFile(CONFIG_SLOT, filename, BASESET_DIR);
	uint32 ofs = FioReadDword();
	size_t entry_count = ofs / 8;
	if (entrynum < entry_count) {
		FioSeekTo(entrynum * 8, SEEK_SET);
		FioSeekTo(FioReadDword(), SEEK_SET);
		byte namelen = FioReadByte();
		char *name = MallocT<char>(namelen + 1);
		FioReadBlock(name, namelen);
		name[namelen] = '\0';
		return name;
	}
	return nullptr;
}

/**
 * Read the full data of a music CAT file entry.
 * @param filename Name of CAT file to read from.
 * @param entrynum Index of entry to read
 * @param[out] entrylen Receives length of data read
 * @return Pointer to buffer with data read, caller is responsible for freeind memory,
 *         nullptr if entrynum does not exist.
 */
byte *GetMusicCatEntryData(const char *filename, size_t entrynum, size_t &entrylen)
{
	entrylen = 0;
	if (!FioCheckFileExists(filename, BASESET_DIR)) return nullptr;

	FioOpenFile(CONFIG_SLOT, filename, BASESET_DIR);
	uint32 ofs = FioReadDword();
	size_t entry_count = ofs / 8;
	if (entrynum < entry_count) {
		FioSeekTo(entrynum * 8, SEEK_SET);
		size_t entrypos = FioReadDword();
		entrylen = FioReadDword();
		FioSeekTo(entrypos, SEEK_SET);
		FioSkipBytes(FioReadByte());
		byte *data = MallocT<byte>(entrylen);
		FioReadBlock(data, entrylen);
		return data;
	}
	return nullptr;
}

INSTANTIATE_BASE_MEDIA_METHODS(BaseMedia<MusicSet>, MusicSet)

/** Names corresponding to the music set's files */
static const char * const _music_file_names[] = {
	"theme",
	"old_0", "old_1", "old_2", "old_3", "old_4", "old_5", "old_6", "old_7", "old_8", "old_9",
	"new_0", "new_1", "new_2", "new_3", "new_4", "new_5", "new_6", "new_7", "new_8", "new_9",
	"ezy_0", "ezy_1", "ezy_2", "ezy_3", "ezy_4", "ezy_5", "ezy_6", "ezy_7", "ezy_8", "ezy_9",
};
/** Make sure we aren't messing things up. */
static_assert(lengthof(_music_file_names) == NUM_SONGS_AVAILABLE);

template <class T, size_t Tnum_files, bool Tsearch_in_tars>
/* static */ const char * const *BaseSet<T, Tnum_files, Tsearch_in_tars>::file_names = _music_file_names;

template <class Tbase_set>
/* static */ const char *BaseMedia<Tbase_set>::GetExtension()
{
	return ".obm"; // OpenTTD Base Music
}

template <class Tbase_set>
/* static */ bool BaseMedia<Tbase_set>::DetermineBestSet()
{
	if (BaseMedia<Tbase_set>::used_set != nullptr) return true;

	const Tbase_set *best = nullptr;
	for (const Tbase_set *c = BaseMedia<Tbase_set>::available_sets; c != nullptr; c = c->next) {
		if (c->GetNumMissing() != 0) continue;

		if (best == nullptr ||
				(best->fallback && !c->fallback) ||
				best->valid_files < c->valid_files ||
				(best->valid_files == c->valid_files &&
					(best->shortname == c->shortname && best->version < c->version))) {
			best = c;
		}
	}

	BaseMedia<Tbase_set>::used_set = best;
	return BaseMedia<Tbase_set>::used_set != nullptr;
}

bool MusicSet::FillSetDetails(IniFile *ini, const char *path, const char *full_filename)
{
	bool ret = this->BaseSet<MusicSet, NUM_SONGS_AVAILABLE, false>::FillSetDetails(ini, path, full_filename);
	if (ret) {
		this->num_available = 0;
		IniGroup *names = ini->GetGroup("names");
		IniGroup *catindex = ini->GetGroup("catindex");
		IniGroup *timingtrim = ini->GetGroup("timingtrim");
		uint tracknr = 1;
		for (uint i = 0; i < lengthof(this->songinfo); i++) {
			const char *filename = this->files[i].filename;
			if (names == nullptr || StrEmpty(filename) || this->files[i].check_result == MD5File::CR_NO_FILE) {
				this->songinfo[i].songname[0] = '\0';
				continue;
			}

			this->songinfo[i].filename = filename; // non-owned pointer

			IniItem *item = catindex->GetItem(_music_file_names[i], false);
			if (item != nullptr && item->value.has_value() && !item->value->empty()) {
				/* Song has a CAT file index, assume it's MPS MIDI format */
				this->songinfo[i].filetype = MTT_MPSMIDI;
				this->songinfo[i].cat_index = atoi(item->value->c_str());
				char *songname = GetMusicCatEntryName(filename, this->songinfo[i].cat_index);
				if (songname == nullptr) {
					DEBUG(grf, 0, "Base music set song missing from CAT file: %s/%d", filename, this->songinfo[i].cat_index);
					this->songinfo[i].songname[0] = '\0';
					continue;
				}
				strecpy(this->songinfo[i].songname, songname, lastof(this->songinfo[i].songname));
				free(songname);
			} else {
				this->songinfo[i].filetype = MTT_STANDARDMIDI;
			}

			const char *trimmed_filename = filename;
			/* As we possibly add a path to the filename and we compare
			 * on the filename with the path as in the .obm, we need to
			 * keep stripping path elements until we find a match. */
			for (; trimmed_filename != nullptr; trimmed_filename = strchr(trimmed_filename, PATHSEPCHAR)) {
				/* Remove possible double path separator characters from
				 * the beginning, so we don't start reading e.g. root. */
				while (*trimmed_filename == PATHSEPCHAR) trimmed_filename++;

				item = names->GetItem(trimmed_filename, false);
				if (item != nullptr && item->value.has_value() && !item->value->empty()) break;
			}

			if (this->songinfo[i].filetype == MTT_STANDARDMIDI) {
				if (item != nullptr && item->value.has_value() && !item->value->empty()) {
					strecpy(this->songinfo[i].songname, item->value->c_str(), lastof(this->songinfo[i].songname));
				} else {
					DEBUG(grf, 0, "Base music set song name missing: %s", filename);
					return false;
				}
			}
			this->num_available++;

			/* Number the theme song (if any) track 0, rest are normal */
			if (i == 0) {
				this->songinfo[i].tracknr = 0;
			} else {
				this->songinfo[i].tracknr = tracknr++;
			}

			item = trimmed_filename != nullptr ? timingtrim->GetItem(trimmed_filename, false) : nullptr;
			if (item != nullptr && item->value.has_value() && !item->value->empty()) {
				auto endpos = item->value->find(':');
				if (endpos != std::string::npos) {
					this->songinfo[i].override_start = atoi(item->value->c_str());
					this->songinfo[i].override_end = atoi(item->value->c_str() + endpos + 1);
				}
			}
		}
	}
	return ret;
}