summaryrefslogtreecommitdiff
path: root/plugins/pulse/pulse.c
blob: ffb92b071cfdbe41c94a6eacb385e5e8cb44caf3 (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
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/*
    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
    Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.net>

    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 program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

    PulseAudio output plugin
    Copyright (C) 2010 Anton Novikov <tonn.post@gmail.com>
*/

#ifdef HAVE_CONFIG_H
#  include "../../config.h"
#endif

#include <pulse/simple.h>

#include <stdint.h>
#include <unistd.h>

#ifdef __linux__
    #include <sys/prctl.h>
#endif

#include <stdio.h>
#include <string.h>
#include "../../deadbeef.h"

//#define trace(...) { fprintf(stdout, __VA_ARGS__); }
#define trace(fmt,...)

static DB_output_t plugin;
DB_functions_t * deadbeef;

#define CONFSTR_PULSE_SAMPLERATE "pulse.samplerate"
#define CONFSTR_PULSE_SERVERADDR "pulse.serveraddr"
#define CONFSTR_PULSE_BUFFERSIZE "pulse.buffersize"

static intptr_t pulse_tid;
static int pulse_terminate;

static pa_simple *s;
static pa_sample_spec ss;
static int state;
static uintptr_t mutex;

static int buffer_size;

static void pulse_thread(void *context);

static void pulse_callback(char *stream, int len);

static int pulse_init(void)
{
    trace ("pulse_init\n");
    state = OUTPUT_STATE_STOPPED;
    pulse_terminate = 0;

    // Read serveraddr from config
    const char * server = deadbeef->conf_get_str(CONFSTR_PULSE_SERVERADDR, NULL);

    if (server)
        server = strcmp(server, "default") ? server : NULL;

    // Read samplerate from config
    ss.rate = deadbeef->conf_get_int(CONFSTR_PULSE_SAMPLERATE, 44100);
    trace ("pulse: samplerate: %d\n", ss.rate);

    // TODO: add config for this
    pa_channel_map * map = NULL;//pa_channel_map_init_stereo(NULL);
    ss.channels = 2;
    ss.format = PA_SAMPLE_S16NE;

    // TODO: where list of all available devices? add this option to config too..
    char * dev = NULL;

    pa_buffer_attr * attr = NULL;
    //attr->maxlength = Maximum length of the buffer.
    //attr->tlength = Playback only: target length of the buffer.
    //attr->prebuf = Playback only: pre-buffering.
    //attr->minreq = Playback only: minimum request.
    //attr->fragsize = Recording only: fragment size.

    buffer_size = deadbeef->conf_get_int(CONFSTR_PULSE_BUFFERSIZE, 4096);

    int error;
    s = pa_simple_new(server, "Deadbeef", PA_STREAM_PLAYBACK, dev, "Music", &ss, map, attr, &error);

    if (!s)
    {
        return -1;
    }

    pulse_tid = deadbeef->thread_start(pulse_thread, NULL);

    return 0;
}

static int pulse_free(void)
{
    trace("pulse_free\n");

    if (pulse_tid)
    {
        pulse_terminate = 1;
        deadbeef->thread_join(pulse_tid);
    }

    pulse_tid = 0;
    state = OUTPUT_STATE_STOPPED;
    if (s != NULL)
    {
        pa_simple_free(s);
        s = NULL;
    }

    return 0;
}

static int pulse_play(void)
{
    if (!pulse_tid)
    {
        if (pulse_init () < 0)
        {
            return -1;
        }
    }

    state = OUTPUT_STATE_PLAYING;
    return 0;
}

static int pulse_stop(void)
{
    state = OUTPUT_STATE_STOPPED;
    deadbeef->streamer_reset(1);
    return 0;
}

static int pulse_pause(void)
{
    if (state == OUTPUT_STATE_STOPPED)
    {
        return -1;
    }

    state = OUTPUT_STATE_PAUSED;

    return 0;
}

static int pulse_unpause(void)
{
    if (state == OUTPUT_STATE_PAUSED)
    {
        state = OUTPUT_STATE_PLAYING;
    }

    return 0;
}

static int pulse_change_rate(int rate)
{
    pulse_free();
    ss.rate = rate;

    if (!pulse_init())
        return -1;

    return ss.rate;
}

static int pulse_get_rate(void)
{
    return ss.rate;
}

static int pulse_get_bps(void)
{
    return 16;
}

static int pulse_get_channels(void)
{
    return ss.channels;
}

static int pulse_get_endianness(void)
{
#if WORDS_BIGENDIAN
    return 1;
#else
    return 0;
#endif
}

static void pulse_thread(void *context)
{
#ifdef __linux__
    prctl(PR_SET_NAME, "deadbeef-pulse", 0, 0, 0, 0);
#endif

    while (!pulse_terminate)
    {
        if (state != OUTPUT_STATE_PLAYING || !deadbeef->streamer_ok_to_read (-1))
        {
            usleep(10000);
            continue;
        }

        char buf[buffer_size];
        deadbeef->mutex_lock(mutex);
        pulse_callback (buf, sizeof (buf));
        int error;

        int res = pa_simple_write(s, buf, sizeof (buf), &error);
        deadbeef->mutex_unlock(mutex);
        usleep (1000);

        if (res < 0)
        {
            fprintf(stderr, "pulse: failed to write buffer\n");
            pulse_tid = 0;
            pulse_free ();
            break;
        }
    }
}

static void pulse_callback(char *stream, int len)
{
    int bytesread = deadbeef->streamer_read(stream, len);
    int16_t ivolume = deadbeef->volume_get_amp() * 1000;

    for (int i = 0; i < bytesread/2; i++)
    {
        ((int16_t*)stream)[i] = (int16_t)(((int32_t)(((int16_t*)stream)[i])) * ivolume / 1000);
    }

    if (bytesread < len)
    {
        memset (stream + bytesread, 0, len-bytesread);
    }
}

static int pulse_get_state(void)
{
    return state;
}

static int pulse_plugin_start(void)
{
    mutex = deadbeef->mutex_create();

    return 0;
}

static int pulse_plugin_stop(void)
{
    deadbeef->mutex_free(mutex);

    return 0;
}

DB_plugin_t * pulse_load(DB_functions_t *api)
{
    deadbeef = api;
    return DB_PLUGIN (&plugin);
}

static const char settings_dlg[] =
    "property \"PulseAudio server\" entry " CONFSTR_PULSE_SERVERADDR " default;\n"
    "property \"Preferred buffer size\" entry " CONFSTR_PULSE_BUFFERSIZE " 4096;\n"
    "property \"Samplerate\" entry " CONFSTR_PULSE_SAMPLERATE " 44100;\n";

static DB_output_t plugin =
{
    DB_PLUGIN_SET_API_VERSION
    .plugin.version_major = 0,
    .plugin.version_minor = 1,
    .plugin.nostop = 0,
    .plugin.type = DB_PLUGIN_OUTPUT,
    .plugin.name = "PulseAudio output plugin",
    .plugin.descr = "plays sound via pulse API",
    .plugin.author = "Anton Novikov",
    .plugin.email = "tonn.post@gmail.com",
    .plugin.website = "http://deadbeef.sf.net",
    .plugin.start = pulse_plugin_start,
    .plugin.stop = pulse_plugin_stop,
    .plugin.configdialog = settings_dlg,
    .init = pulse_init,
    .free = pulse_free,
    .change_rate = pulse_change_rate,
    .play = pulse_play,
    .stop = pulse_stop,
    .pause = pulse_pause,
    .unpause = pulse_unpause,
    .state = pulse_get_state,
    .samplerate = pulse_get_rate,
    .bitspersample = pulse_get_bps,
    .channels = pulse_get_channels,
    .endianness = pulse_get_endianness,
};