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-rw-r--r--apps/playlist.c164
-rw-r--r--apps/playlist.h61
2 files changed, 225 insertions, 0 deletions
diff --git a/apps/playlist.c b/apps/playlist.c
new file mode 100644
index 0000000000..60786f67ce
--- /dev/null
+++ b/apps/playlist.c
@@ -0,0 +1,164 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2002 by wavey@wavey.org
11 *
12 * All files in this archive are subject to the GNU General Public License.
13 * See the file COPYING in the source tree root for full license agreement.
14 *
15 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
16 * KIND, either express or implied.
17 *
18 ****************************************************************************/
19
20#include <stdio.h>
21#include <malloc.h>
22#include <time.h>
23#include <stdlib.h>
24#include <string.h>
25#include "playlist.h"
26#include <file.h>
27#include "sprintf.h"
28#include "debug.h"
29
30playlist_info_t playlist;
31
32int index_array[1000];
33
34char now_playing[256];
35
36char* playlist_next(int type)
37{
38 int seek = playlist.indices[playlist.index];
39 int max;
40 int fd;
41 playlist.index = (playlist.index+1) % playlist.amount;
42
43 fd = open(playlist.filename, O_RDONLY);
44 if(-1 != fd) {
45 lseek(fd, seek, SEEK_SET);
46 max = read(fd, now_playing, sizeof(now_playing));
47 close(fd);
48
49 seek=0;
50 while((now_playing[seek] != '\n') &&
51 (now_playing[seek] != '\r') &&
52 (seek < max))
53 seek++;
54 if(seek == max)
55 seek = max-1;
56 now_playing[seek]=0;
57
58 return now_playing;
59 }
60 else
61 return NULL;
62}
63
64void play_list(char *dir, char *file)
65{
66 empty_playlist(&playlist);
67
68 snprintf(playlist.filename, sizeof(playlist.filename),
69 "%s/%s", dir, file);
70
71 /* add track indices to playlist data structure */
72 add_indices_to_playlist(&playlist);
73
74 /* if shuffle is wanted, this is where to do that */
75
76 /* also make the first song get playing */
77 mpeg_play(playlist_next(0));
78
79}
80
81/*
82 * remove any filename and indices associated with the playlist
83 */
84void empty_playlist( playlist_info_t *playlist )
85{
86 playlist->filename[0] = '\0';
87 playlist->index = 0;
88 playlist->amount = 0;
89}
90
91/*
92 * calculate track offsets within a playlist file
93 */
94void add_indices_to_playlist( playlist_info_t *playlist )
95{
96 char *p;
97 int i = 0;
98 unsigned char byte;
99 unsigned char lastbyte='\n';
100 int nread;
101
102 int fd;
103
104 fd = open(playlist->filename, O_RDONLY);
105 if(-1 == fd)
106 return; /* failure */
107
108 p = &byte;
109
110 /* loop thru buffer, store index whenever we get a new line */
111
112 while((nread = read(fd, &byte, 1)) == 1)
113 {
114 /* move thru (any) newlines */
115
116 if(( byte != '\n' ) && ( byte != '\r' ) &&
117 ((lastbyte == '\n') || (lastbyte == '\r'))) {
118 /* we're now at the start of a new track filename. store index */
119
120 DEBUGF("tune %d at position %d\n", playlist->amount, i);
121 playlist->indices [ playlist->amount ] = i;
122 playlist->amount++;
123 }
124 i++;
125 lastbyte = byte;
126 }
127
128 close(fd);
129}
130
131/*
132 * randomly rearrange the array of indices for the playlist
133 */
134void randomise_playlist( playlist_info_t *playlist, unsigned int seed )
135{
136 int count = 0;
137 int candidate;
138 int store;
139
140 /* seed with the given seed */
141 srand( seed );
142
143 /* randomise entire indices list */
144
145 while( count < playlist->amount )
146 {
147 /* the rand is from 0 to RAND_MAX, so adjust to our value range */
148 candidate = rand() % ( playlist->amount );
149
150 /* now swap the values at the 'count' and 'candidate' positions */
151 store = playlist->indices[candidate];
152 playlist->indices[candidate] = playlist->indices[count];
153 playlist->indices[count] = store;
154
155 /* move along */
156 count++;
157 }
158}
159
160/* -----------------------------------------------------------------
161 * local variables:
162 * eval: (load-file "../firmware/rockbox-mode.el")
163 * end:
164 */
diff --git a/apps/playlist.h b/apps/playlist.h
new file mode 100644
index 0000000000..2271403920
--- /dev/null
+++ b/apps/playlist.h
@@ -0,0 +1,61 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2002 by wavey@wavey.org
11 *
12 * All files in this archive are subject to the GNU General Public License.
13 * See the file COPYING in the source tree root for full license agreement.
14 *
15 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
16 * KIND, either express or implied.
17 *
18 ****************************************************************************/
19
20#ifndef __PLAYLIST_H__
21#define __PLAYLIST_H__
22
23/* playlist data */
24
25#define MAX_PLAYLIST_SIZE 1000
26typedef struct
27{
28 char filename[256]; /* path name of m3u playlist on disk */
29 int indices[MAX_PLAYLIST_SIZE]; /* array of indices */
30 int index; /* index of *NEXT* track to play */
31 int seed; /* random seed */
32 int amount; /* number of tracks in the index */
33} playlist_info_t;
34
35void play_list(char *dir, char *file);
36
37void read_entire_file( char *buf, const char *filename );
38void load_playlist( playlist_info_t *playlist, const char *filename );
39void extract_playlist_indices( char *buf, playlist_info_t *playlist );
40void display_current_playlist( playlist_info_t *playlist );
41void get_indices_as_string( char *string, playlist_info_t *playlist );
42void empty_playlist( playlist_info_t *playlist );
43void add_indices_to_playlist( playlist_info_t *playlist );
44void extend_indices( playlist_info_t *playlist, int new_index );
45void randomise_playlist( playlist_info_t *playlist, unsigned int seed );
46int is_unused_random_in_list( int number, int *original_list, int count );
47
48/**********/
49
50
51
52
53
54
55int create_playlist( void );
56/*int add_to_playlist( track_t *track );*/
57int remove_from_playlist( int index );
58int set_playlist_position( void );
59/*track_t * get_previous_entry_in_playlist( void );*/
60
61#endif /* __PLAYLIST_H__ */
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