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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
#include "config.h"
#include "../decoder_api.h"
#include "audio_check.h"
#include "uri.h"
#include <glib.h>
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <gme/gme.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "gme"
#define SUBTUNE_PREFIX "tune_"
enum {
GME_SAMPLE_RATE = 44100,
GME_CHANNELS = 2,
GME_BUFFER_FRAMES = 2048,
GME_BUFFER_SAMPLES = GME_BUFFER_FRAMES * GME_CHANNELS,
};
/**
* returns the file path stripped of any /tune_xxx.* subtune
* suffix
*/
static char *
get_container_name(const char *path_fs)
{
const char *subtune_suffix = uri_get_suffix(path_fs);
char *path_container = g_strdup(path_fs);
char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix, NULL);
GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
g_free(pat);
if (!g_pattern_match(path_with_subtune,
strlen(path_container), path_container, NULL)) {
g_pattern_spec_free(path_with_subtune);
return path_container;
}
char *ptr = g_strrstr(path_container, "/" SUBTUNE_PREFIX);
if (ptr != NULL)
*ptr='\0';
g_pattern_spec_free(path_with_subtune);
return path_container;
}
/**
* returns tune number from file.nsf/tune_xxx.* style path or 0 if no subtune
* is appended.
*/
static int
get_song_num(const char *path_fs)
{
const char *subtune_suffix = uri_get_suffix(path_fs);
char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix, NULL);
GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
g_free(pat);
if (g_pattern_match(path_with_subtune,
strlen(path_fs), path_fs, NULL)) {
char *sub = g_strrstr(path_fs, "/" SUBTUNE_PREFIX);
g_pattern_spec_free(path_with_subtune);
if(!sub)
return 0;
sub += strlen("/" SUBTUNE_PREFIX);
int song_num = strtol(sub, NULL, 10);
return song_num - 1;
} else {
g_pattern_spec_free(path_with_subtune);
return 0;
}
}
static char *
gme_container_scan(const char *path_fs, const unsigned int tnum)
{
Music_Emu *emu;
const char* gme_err;
unsigned int num_songs;
gme_err = gme_open_file(path_fs, &emu, GME_SAMPLE_RATE);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return NULL;
}
num_songs = gme_track_count(emu);
/* if it only contains a single tune, don't treat as container */
if (num_songs < 2)
return NULL;
const char *subtune_suffix = uri_get_suffix(path_fs);
if (tnum <= num_songs){
char *subtune = g_strdup_printf(
SUBTUNE_PREFIX "%03u.%s", tnum, subtune_suffix);
return subtune;
} else
return NULL;
}
static void
gme_file_decode(struct decoder *decoder, const char *path_fs)
{
float song_len;
Music_Emu *emu;
gme_info_t *ti;
struct audio_format audio_format;
enum decoder_command cmd;
short buf[GME_BUFFER_SAMPLES];
const char* gme_err;
char *path_container = get_container_name(path_fs);
int song_num = get_song_num(path_fs);
gme_err = gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
g_free(path_container);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return;
}
if((gme_err = gme_track_info(emu, &ti, song_num)) != NULL){
g_warning("%s", gme_err);
gme_delete(emu);
return;
}
if(ti->length > 0)
song_len = ti->length / 1000.0;
else song_len = -1;
/* initialize the MPD decoder */
GError *error = NULL;
if (!audio_format_init_checked(&audio_format, GME_SAMPLE_RATE,
SAMPLE_FORMAT_S16, GME_CHANNELS,
&error)) {
g_warning("%s", error->message);
g_error_free(error);
gme_free_info(ti);
gme_delete(emu);
return;
}
decoder_initialized(decoder, &audio_format, true, song_len);
if((gme_err = gme_start_track(emu, song_num)) != NULL)
g_warning("%s", gme_err);
if(ti->length > 0)
gme_set_fade(emu, ti->length);
/* play */
do {
gme_err = gme_play(emu, GME_BUFFER_SAMPLES, buf);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return;
}
cmd = decoder_data(decoder, NULL, buf, sizeof(buf), 0);
if(cmd == DECODE_COMMAND_SEEK) {
float where = decoder_seek_where(decoder);
if((gme_err = gme_seek(emu, (int)where*1000)) != NULL)
g_warning("%s", gme_err);
decoder_command_finished(decoder);
}
if(gme_track_ended(emu))
break;
} while(cmd != DECODE_COMMAND_STOP);
gme_free_info(ti);
gme_delete(emu);
}
static struct tag *
gme_tag_dup(const char *path_fs)
{
Music_Emu *emu;
gme_info_t *ti;
const char* gme_err;
char *path_container=get_container_name(path_fs);
int song_num;
song_num=get_song_num(path_fs);
gme_err = gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
g_free(path_container);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return NULL;
}
if((gme_err = gme_track_info(emu, &ti, song_num)) != NULL){
g_warning("%s", gme_err);
gme_delete(emu);
return NULL;
}
assert(ti != NULL);
struct tag *tag = tag_new();
if(ti->length > 0)
tag->time = ti->length / 1000;
if(ti->song != NULL){
if(gme_track_count(emu) > 1){
/* start numbering subtunes from 1 */
char *tag_title=g_strdup_printf("%s (%d/%d)",
ti->song, song_num+1, gme_track_count(emu));
tag_add_item(tag, TAG_TITLE, tag_title);
g_free(tag_title);
}else
tag_add_item(tag, TAG_TITLE, ti->song);
}
if(ti->author != NULL)
tag_add_item(tag, TAG_ARTIST, ti->author);
if(ti->game != NULL)
tag_add_item(tag, TAG_ALBUM, ti->game);
if(ti->comment != NULL)
tag_add_item(tag, TAG_COMMENT, ti->comment);
if(ti->copyright != NULL)
tag_add_item(tag, TAG_DATE, ti->copyright);
gme_free_info(ti);
gme_delete(emu);
return tag;
}
static const char *const gme_suffixes[] = {
"ay", "gbs", "gym", "hes", "kss", "nsf",
"nsfe", "sap", "spc", "vgm", "vgz",
NULL
};
extern const struct decoder_plugin gme_decoder_plugin;
const struct decoder_plugin gme_decoder_plugin = {
.name = "gme",
.file_decode = gme_file_decode,
.tag_dup = gme_tag_dup,
.suffixes = gme_suffixes,
.container_scan = gme_container_scan,
};
|
