/[cebix]/SIDPlayer/src/soundplay.cpp
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Contents of /SIDPlayer/src/soundplay.cpp

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Revision 1.5 - (show annotations)
2004-01-12T15:15:49Z (13 years, 8 months ago) by cebix
Branch: MAIN
CVS Tags: HEAD
Changes since 1.4: +1 -1 lines
File MIME type: text/x-c++src
Happy New Year!

1 /*
2 * soundplay.cpp - SIDPlayer SoundPlay plugin
3 *
4 * SIDPlayer (C) Copyright 1996-2004 Christian Bauer
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21
22 #include <stdio.h>
23 #include <string.h>
24 #include <stdlib.h>
25 #include <MediaDefs.h>
26 #include <Path.h>
27
28 #include "soundplay.h"
29
30 #include "prefs.h"
31 #include "main.h"
32 #include "psid.h"
33 #include "sid.h"
34 #include "prefs_window.h"
35
36 static const char MY_URL_HEADER[] = "sid://";
37 const int MY_URL_HEADER_LEN = 6;
38
39 /* ===========================================================
40 Plugin-descriptor structure.
41 This structure is used to gather information about a plugin
42 and instantiate and destroy specific instances of a plugin.
43 Since SIDPlayer is single-context, we set the single context
44 flag to make SoundPlay load additional instances of this plugin
45 when needed.
46 */
47 static plugin_descriptor plugin={
48 PLUGIN_DESCRIPTOR_MAGIC,PLUGIN_DESCRIPTOR_VERSION,
49 "sp-sidplay",1, PLUGIN_IS_DECODER|PLUGIN_IS_SINGLE_CONTEXT,
50
51 "SIDPlayer Decoder",
52 "By Christian Bauer.\n\n"
53 "SoundPlay plugin by\nMarco Nelissen.",
54 NULL, //about,
55 configure,
56 getplugin,
57 destroyplugin
58 };
59
60 /* ===========================================================
61 Plugin-operations structure.
62 This is used to actually perform operations on a plugin.
63 It is returned by the getplugin() function from the
64 plugin_descriptor structure above.
65 */
66 static decoder_plugin_ops ops={
67 PLUGIN_DECODER_MAGIC,PLUGIN_DECODER_VERSION,
68
69 open,
70 NULL, // close
71 info,
72 read,
73 NULL, // play
74 NULL, // stop
75 NULL, // setvolume
76 NULL, // setpitchandspeed
77 NULL, // seek,
78 NULL, // position,
79 NULL // bufferamount
80 };
81
82
83 /* ===========================================================
84 Return the list of plugins in this file.
85 */
86 static plugin_descriptor *plugs[]={
87 &plugin,
88 0
89 };
90
91 plugin_descriptor **get_plugin_list(void)
92 {
93 return plugs;
94 }
95
96 /* ===========================================================
97 Return the list of filetypes supported by all the plugins
98 in this file
99 */
100 static supported_type supportedtypes[]=
101 {
102 {"audio/x-psid", "SIDPlayer file", "SIDPlayer file", "sid", "psid"},
103 {NULL, NULL, NULL, NULL, NULL}
104 };
105
106 supported_type *get_supported_types(void)
107 {
108 return supportedtypes;
109 }
110
111
112 /* ===========================================================
113 Implementation of the plugin_descriptor functions
114 */
115
116 static BWindow *prefs_window=NULL;
117
118 static bool initialized=false;
119
120 class autoinit
121 {
122 public:
123 autoinit()
124 {
125 }
126 ~autoinit()
127 {
128 if(initialized)
129 {
130 ExitAll();
131 initialized = false;
132 }
133 }
134 };
135 static autoinit autoinit;
136
137 static void *getplugin(void **data, const char *filename, const char *header, uint32 size, plugin_info *info)
138 {
139 if(!initialized)
140 {
141 initialized = true;
142 int argc = 0;
143 char **argv = NULL;
144 InitAll(argc, argv);
145 }
146 if (strncasecmp(filename, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {
147 // name starts with "sid://", extract file name
148 char name[B_FILE_NAME_LENGTH];
149 char *q = strrchr(filename, '?');
150 if (q == NULL)
151 return NULL;
152 int name_len = q - (filename + MY_URL_HEADER_LEN);
153 strncpy(name, filename + MY_URL_HEADER_LEN, name_len);
154 name[name_len] = 0;
155 if(!IsPSIDFile(name))
156 return NULL;
157 } else {
158 if(!IsPSIDFile(filename))
159 return NULL;
160 }
161 return &ops;
162 }
163
164 static void destroyplugin(void *ops,void *_sh)
165 {
166 }
167
168 static BView* configure(BMessage *config)
169 {
170 if (prefs_window_open && prefs_window) {
171 prefs_window->Activate(true);
172 return NULL;
173 } else {
174 prefs_window = new PrefsWindow();
175 return NULL;
176 }
177 }
178
179 /* ===========================================================
180 Implementation of the decoder_plugin_ops functions
181 */
182
183 status_t open(void *,const char *filename, const char *header, uint32 size, BMessage *config)
184 {
185 char name[B_FILE_NAME_LENGTH];
186 bool subsong_given = false;
187 int song;
188
189 if (strncasecmp(filename, MY_URL_HEADER, MY_URL_HEADER_LEN) == 0) {
190
191 // name starts with "sid://", extract file name
192 char *q = strrchr(filename, '?');
193 if (q == NULL)
194 return B_ERROR;
195 subsong_given = true;
196 song = atoi(q + 1);
197 int name_len = q - (filename + MY_URL_HEADER_LEN);
198 strncpy(name, filename + MY_URL_HEADER_LEN, name_len);
199 name[name_len] = 0;
200
201 } else
202 strcpy(name, filename);
203
204 // Load PSID file
205 if (!LoadPSIDFile(name))
206 return B_ERROR;
207
208 // Select subsong if subsong number given
209 if (subsong_given)
210 SelectSong(song);
211
212 return B_OK;
213 }
214
215
216 static status_t info(void *_sid, file_info *info)
217 {
218 strcpy(info->name,"");
219 strcpy(info->typedesc,"SID");
220 strcpy(info->mimetype,"audio/x-psid");
221 info->samplerate=44100;
222 info->bitrate=0;
223 info->numchannels=2;
224 info->granularity=4096;
225 info->framecount=0x7fffffff;
226 info->samplesize=2;
227 if(B_HOST_IS_LENDIAN)
228 info->byteorder=B_LITTLE_ENDIAN;
229 else
230 info->byteorder=B_BIG_ENDIAN;
231 info->sampleformat=B_LINEAR_SAMPLES;
232 info->flags=PLUGIN_FILELENGTH_UNKNOWN;
233
234 return B_OK;
235 }
236
237
238 int32 read(void *,char *buf, ulong numframes)
239 {
240 SIDCalcBuffer((uint8*)buf, numframes*4);
241 return numframes;
242 }
243
244

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