summaryrefslogtreecommitdiffstats
path: root/apps/plugins/pdbox/pdbox.c
blob: cdec7a279c8ebc65e20a26f73b9d4e8adb512338 (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
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
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2009 Wincent Balin
 *
 * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include "plugin.h"
#include "pdbox.h"

#include "PDa/src/m_pd.h"
#include "PDa/src/s_stuff.h"

/* Welcome to the PDBox plugin */
PLUGIN_HEADER
PLUGIN_IRAM_DECLARE

/* Name of the file to open. */
char* filename;

/* Running time. */
uint64_t runningtime = 0;

/* Variables for Pure Data. */
int sys_verbose;
int sys_noloadbang;
t_symbol *sys_libdir;
t_namelist *sys_openlist;
int sys_soundindevlist[MAXAUDIOINDEV];
int sys_chinlist[MAXAUDIOINDEV];
int sys_soundoutdevlist[MAXAUDIOOUTDEV];
int sys_choutlist[MAXAUDIOOUTDEV];
t_binbuf* inbinbuf;

/* References for scheduler variables and functions. */
extern t_time sys_time;
extern t_time sys_time_per_dsp_tick;
extern void sched_tick(t_time next_sys_time);

/* LATER consider making this variable.  It's now the LCM of all sample
rates we expect to see: 32000, 44100, 48000, 88200, 96000. */
#define TIMEUNITPERSEC (32.*441000.)


/* Quit flag. */
bool quit = false;

/* Stack sizes for threads. */
#define CORESTACKSIZE (1 * 1024 * 1024)
#define GUISTACKSIZE (512 * 1024)

/* Thread stacks. */
void* core_stack;
void* gui_stack;

/* Thread IDs. */
unsigned int core_thread_id;
unsigned int gui_thread_id;


/* GUI thread */
void gui_thread(void)
{
    struct pd_widget widget[128];
    unsigned int widgets = 0;
    struct datagram dg;
    bool update;

    /* Initialize GUI. */
    pd_gui_init();

    /* Load PD patch. */
    widgets = pd_gui_load_patch(widget,
                                sizeof(widget) / sizeof(struct pd_widget));

    /* Draw initial state of UI. */
    pd_gui_draw(widget, widgets);

    /* GUI loop */
    while(!quit)
    {
        /* Reset update flag. */
        update = false;

        /* Apply timer to widgets. */
        update |=
        pd_gui_apply_timeouts(widget, widgets);

        /* Process buttons. */
        update |=
        pd_gui_parse_buttons(widgets);

        /* Receive and parse datagrams. */
        while(RECEIVE_FROM_CORE(&dg))
        {
            update = true;
            pd_gui_parse_message(&dg, widget, widgets);
        }

        /* If there is something to update in GUI, do so. */
        if(update)
            pd_gui_draw(widget, widgets);

        rb->sleep(1);
    }

    rb->thread_exit();
}

/* Core thread */
void core_thread(void)
{
    /* Add the directory the called .pd file resides in to lib directories. */
    sys_findlibdir(filename);

    /* Open the PD design file. */
    sys_openlist = namelist_append(sys_openlist, filename);

    /* Fake a GUI start. */
    sys_startgui(NULL);

    /* Core scheduler loop */
    while(!quit)
    {
        /* Receive datagrams. */
        struct datagram dg;

        while(RECEIVE_TO_CORE(&dg))
            rockbox_receive_callback(&dg);

        /* Use sys_send_dacs() function as timer. */
        while(sys_send_dacs() != SENDDACS_NO)
            sched_tick(sys_time + sys_time_per_dsp_tick);

        rb->sleep(1);
    }

    rb->thread_exit();
}



/* Plug-in entry point */
enum plugin_status plugin_start(const void* parameter)
{
    PLUGIN_IRAM_INIT(rb)

    /* Memory pool variables. */
    size_t mem_size;
    void* mem_pool;

    /* Get the file name; check whether parameter contains no file name. */
    filename = (char*) parameter;
    if(strlen(filename) == 0)
    {
        rb->splash(HZ, "Play a .pd file!");
        return PLUGIN_ERROR;
    }

    /* Initialize memory pool. */
    mem_pool = rb->plugin_get_audio_buffer(&mem_size);
    if(mem_size < MIN_MEM_SIZE)
    {
        rb->splash(HZ, "Not enough memory!");
        return PLUGIN_ERROR;
    }

    init_memory_pool(mem_size, mem_pool);

    /* Initialize net. */
    net_init();

    /* Initialize Pure Data, as does sys_main in s_main.c */
    pd_init();

    /* Set audio API. */
    sys_set_audio_api(API_ROCKBOX);

    /* Initialize audio subsystem. */
    sys_open_audio(0, /* No sound input yet */
                   sys_soundindevlist,
                   0, /* No sound input yet */
                   sys_chinlist,
                   1, /* One sound output device */
                   sys_soundoutdevlist,
                   -1, /* Use the default amount (2) of channels */
                   sys_choutlist,
                   PD_SAMPLERATE, /* Sample rate */
                   DEFAULTADVANCE, /* Scheduler advance */
                   1 /* Enable */);

    /* Initialize scheduler time variables. */
    sys_time = 0;
    sys_time_per_dsp_tick = (TIMEUNITPERSEC) *
                            ((double) sys_schedblocksize) / sys_dacsr;


    /* Create stacks for threads. */
    core_stack = getbytes(CORESTACKSIZE);
    gui_stack = getbytes(GUISTACKSIZE);
    if(core_stack == NULL || gui_stack == NULL)
    {
        rb->splash(HZ, "Not enough memory!");
        return PLUGIN_ERROR;
    }

    /* Boost CPU. */
    cpu_boost(true);

    /* Start threads. */
    core_thread_id =
        rb->create_thread(&core_thread,
                          core_stack,
                          CORESTACKSIZE,
                          0, /* FIXME Which flags? */
                          "PD core"
                          IF_PRIO(, PRIORITY_REALTIME)
                          IF_COP(, COP));

    gui_thread_id =
        rb->create_thread(&gui_thread,
                          gui_stack,
                          GUISTACKSIZE,
                          0, /* FIXME Which flags? */
                          "PD GUI"
                          IF_PRIO(, PRIORITY_USER_INTERFACE)
                          IF_COP(, CPU));

    /* If having an error creating threads, bail out. */
    if(core_thread_id == 0 || gui_thread_id == 0)
        return PLUGIN_ERROR;

    /* Main loop. */
    while(!quit)
    {
        /* Add time slice in milliseconds. */
        runningtime += (1000 / HZ);

        /* Sleep to the next time slice. */
        rb->sleep(1);
    }

    /* Wait for threads to complete. */
    rb->thread_wait(gui_thread_id);
    rb->thread_wait(core_thread_id);

    /* Unboost CPU. */
    cpu_boost(false);

    /* Close audio subsystem. */
    sys_close_audio();

    /* Destroy net. */
    net_destroy();

    /* Clear memory pool. */
    destroy_memory_pool(mem_pool);

    return PLUGIN_OK;
}