1 /*****************************************************************************
2 * sndio.c : sndio plugin for VLC
3 *****************************************************************************
4 * Copyright (C) 2012 RĂ©mi Denis-Courmont
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU Lesser General Public License as published by
8 * the Free Software Foundation; either version 2.1 of the License, or
9 * (at your option) any later version.
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 Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 *****************************************************************************/
28 #include <vlc_common.h>
29 #include <vlc_plugin.h>
34 static int Open (vlc_object_t *);
35 static void Close (vlc_object_t *);
38 set_shortname ("sndio")
39 set_description (N_("OpenBSD sndio audio output"))
40 set_category (CAT_AUDIO)
41 set_subcategory (SUBCAT_AUDIO_AOUT)
42 set_capability ("audio output", 120)
43 set_callbacks (Open, Close)
46 static int TimeGet (audio_output_t *, mtime_t *);
47 static void Play (audio_output_t *, block_t *);
48 static void Flush (audio_output_t *, bool);
49 static int VolumeSet (audio_output_t *, float);
50 static int MuteSet (audio_output_t *, bool);
51 static void VolumeChanged (void *, unsigned);
52 static void PositionChanged (void *, int);
64 /** Initializes an sndio playback stream */
65 static int Start (audio_output_t *aout, audio_sample_format_t *restrict fmt)
67 aout_sys_t *sys = aout->sys;
69 sys->hdl = sio_open (NULL, SIO_PLAY, 0 /* blocking */);
72 msg_Err (aout, "cannot create audio playback stream");
78 switch (fmt->i_format) {
86 par.le = SIO_LE_NATIVE;
93 par.le = SIO_LE_NATIVE;
96 /* use a common audio format */
99 par.le = SIO_LE_NATIVE;
101 par.pchan = aout_FormatNbChannels (fmt);
102 par.rate = fmt->i_rate;
103 par.round = par.rate / 50;
104 par.appbufsz = par.rate / 4;
106 if (!sio_setpar (sys->hdl, &par) || !sio_getpar (sys->hdl, &par))
108 msg_Err (aout, "cannot negotiate audio playback parameters");
112 if (par.bps != par.bits >> 3 && !par.msb)
114 msg_Err (aout, "unsupported audio sample format (%u bits in %u bytes)",
118 if (par.sig != (par.bits != 8))
120 msg_Err (aout, "unsupported audio sample format (%ssigned)",
121 par.sig ? "" : "un");
124 if (par.bps > 1 && par.le != SIO_LE_NATIVE)
126 msg_Err (aout, "unsupported audio sample format (%s endian)",
127 par.le ? "little" : "big");
133 fmt->i_format = VLC_CODEC_U8;
136 fmt->i_format = VLC_CODEC_S16N;
139 fmt->i_format = VLC_CODEC_S32N;
142 msg_Err (aout, "unsupported audio sample format (%u bits)",
147 fmt->i_rate = par.rate;
148 sys->rate = par.rate;
155 chans = AOUT_CHAN_CENTER;
158 chans = AOUT_CHANS_STEREO;
161 chans = AOUT_CHANS_4_0;
164 chans = AOUT_CHANS_5_1;
167 chans = AOUT_CHANS_7_1;
170 msg_Err (aout, "unknown %u channels map", par.pchan);
174 fmt->i_original_channels = fmt->i_physical_channels = chans;
175 aout_FormatPrepare (fmt);
177 aout->time_get = TimeGet;
181 if (sio_onvol(sys->hdl, VolumeChanged, aout))
183 aout->volume_set = VolumeSet;
184 aout->mute_set = MuteSet;
188 aout->volume_set = NULL;
189 aout->mute_set = NULL;
194 sio_onmove (sys->hdl, PositionChanged, aout);
195 sio_start (sys->hdl);
199 sio_close (sys->hdl);
203 static void Stop (audio_output_t *aout)
205 aout_sys_t *sys = aout->sys;
207 sio_close (sys->hdl);
210 static void PositionChanged (void *arg, int delta)
212 audio_output_t *aout = arg;
213 aout_sys_t *sys = aout->sys;
219 static int TimeGet (audio_output_t *aout, mtime_t *restrict delay)
221 aout_sys_t *sys = aout->sys;
225 *delay = (mtime_t)sys->delay * CLOCK_FREQ / sys->rate;
229 static void Play (audio_output_t *aout, block_t *block)
231 aout_sys_t *sys = aout->sys;
233 sio_write (sys->hdl, block->p_buffer, block->i_buffer);
234 sys->delay += block->i_nb_samples;
235 block_Release (block);
238 static void Flush (audio_output_t *aout, bool wait)
240 aout_sys_t *sys = aout->sys;
245 sio_start (sys->hdl);
249 static void VolumeChanged (void *arg, unsigned volume)
251 audio_output_t *aout = arg;
252 float fvol = (float)volume / (float)SIO_MAXVOL;
254 aout_VolumeReport (aout, fvol);
255 aout_MuteReport (aout, volume == 0);
256 if (volume) /* remember last non-zero volume to unmute later */
257 aout->sys->volume = volume;
260 static int VolumeSet (audio_output_t *aout, float fvol)
262 aout_sys_t *sys = aout->sys;
269 volume = lroundf (fvol * SIO_MAXVOL);
270 if (!sys->mute && !sio_setvol (sys->hdl, volume))
272 sys->volume = volume;
276 static int MuteSet (audio_output_t *aout, bool mute)
278 aout_sys_t *sys = aout->sys;
280 if (!sio_setvol (sys->hdl, mute ? 0 : sys->volume))
287 static int Open (vlc_object_t *obj)
289 audio_output_t *aout = (audio_output_t *)obj;
290 aout_sys_t *sys = malloc (sizeof (*sys));
291 if (unlikely(sys == NULL))
297 /* FIXME: set volume/mute here */
301 static void Close (vlc_object_t *obj)
303 audio_output_t *aout = (audio_output_t *)obj;
304 aout_sys_t *sys = aout->sys;