*****************************************************************************
* Copyright (C) 2012 Rémi Denis-Courmont
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
# include "config.h"
#endif
+#include <math.h>
#include <assert.h>
#include <vlc_common.h>
set_category (CAT_AUDIO)
set_subcategory (SUBCAT_AUDIO_AOUT)
set_capability ("audio output", 120)
- set_callbacks (Open, Close )
+ set_callbacks (Open, Close)
vlc_module_end ()
-static void Play (audio_output_t *, block_t *);
-static void Pause (audio_output_t *, bool, mtime_t);
+static int TimeGet (audio_output_t *, mtime_t *);
+static void Play (audio_output_t *, block_t *);
+static void Flush (audio_output_t *, bool);
+static int VolumeSet (audio_output_t *, float);
+static int MuteSet (audio_output_t *, bool);
+static void VolumeChanged (void *, unsigned);
+static void PositionChanged (void *, int);
+
+struct aout_sys_t
+{
+ struct sio_hdl *hdl;
+ int started;
+ int delay;
+ unsigned rate;
+ unsigned volume;
+ bool mute;
+};
/** Initializes an sndio playback stream */
-static int Open (vlc_object_t *obj)
+static int Start (audio_output_t *aout, audio_sample_format_t *restrict fmt)
{
- audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = aout->sys;
- struct sio_hdl *sio = sio_open (NULL, SIO_PLAY, 0 /* blocking */);
- if (sio == NULL)
+ sys->hdl = sio_open (NULL, SIO_PLAY, 0 /* blocking */);
+ if (sys->hdl == NULL)
{
- msg_Err (obj, "cannot create audio playback stream");
+ msg_Err (aout, "cannot create audio playback stream");
return VLC_EGENERIC;
}
struct sio_par par;
sio_initpar (&par);
- par.bits = 16;
- par.bps = par.bits >> 3;
- par.sig = 1;
- par.le = SIO_LE_NATIVE;
- par.pchan = aout_FormatNbChannels (&aout->format);
- par.rate = aout->format.i_rate;
- par.xrun = SIO_SYNC;
-
- if (!sio_setpar (sio, &par) || !sio_getpar (sio, &par))
+ switch (fmt->i_format) {
+ case VLC_CODEC_S8:
+ par.bits = 8;
+ par.sig = 0;
+ break;
+ case VLC_CODEC_S16N:
+ par.bits = 16;
+ par.sig = 1;
+ par.le = SIO_LE_NATIVE;
+ break;
+ case VLC_CODEC_S32N:
+ case VLC_CODEC_FL32:
+ case VLC_CODEC_FL64:
+ par.bits = 32;
+ par.sig = 1;
+ par.le = SIO_LE_NATIVE;
+ break;
+ default:
+ /* use a common audio format */
+ par.bits = 16;
+ par.sig = 1;
+ par.le = SIO_LE_NATIVE;
+ }
+ par.pchan = aout_FormatNbChannels (fmt);
+ par.rate = fmt->i_rate;
+ par.round = par.rate / 50;
+ par.appbufsz = par.rate / 4;
+
+ if (!sio_setpar (sys->hdl, &par) || !sio_getpar (sys->hdl, &par))
{
- msg_Err (obj, "cannot negotiate audio playback parameters");
+ msg_Err (aout, "cannot negotiate audio playback parameters");
goto error;
}
- if (par.bps != par.bits >> 3)
+ if (par.bps != par.bits >> 3 && !par.msb)
{
- msg_Err (obj, "unsupported audio sample format (%u bits in %u bytes)",
+ msg_Err (aout, "unsupported audio sample format (%u bits in %u bytes)",
par.bits, par.bps);
goto error;
}
-
- audio_format_t f;
-
+ if (par.sig != (par.bits != 8))
+ {
+ msg_Err (aout, "unsupported audio sample format (%ssigned)",
+ par.sig ? "" : "un");
+ goto error;
+ }
+ if (par.bps > 1 && par.le != SIO_LE_NATIVE)
+ {
+ msg_Err (aout, "unsupported audio sample format (%s endian)",
+ par.le ? "little" : "big");
+ goto error;
+ }
switch (par.bits)
{
case 8:
- f.i_format = par.sig ? VLC_CODEC_S8 : VLC_CODEC_U8;
+ fmt->i_format = VLC_CODEC_U8;
break;
case 16:
- f.i_format = par.sig ? (par.le ? VLC_CODEC_S16L : VLC_CODEC_S16B)
- : (par.le ? VLC_CODEC_U16L : VLC_CODEC_U16B);
- break;
- case 24:
- f.i_format = par.sig ? (par.le ? VLC_CODEC_S24L : VLC_CODEC_S24B)
- : (par.le ? VLC_CODEC_U24L : VLC_CODEC_U24B);
+ fmt->i_format = VLC_CODEC_S16N;
break;
case 32:
- f.i_format = par.sig ? (par.le ? VLC_CODEC_S32L : VLC_CODEC_S32B)
- : (par.le ? VLC_CODEC_U32L : VLC_CODEC_U32B);
+ fmt->i_format = VLC_CODEC_S32N;
break;
default:
- msg_Err (obj, "unsupported audio sample format (%u bits)",
+ msg_Err (aout, "unsupported audio sample format (%u bits)",
par.bits);
goto error;
}
- f.i_rate = par.rate;
+ fmt->i_rate = par.rate;
+ sys->rate = par.rate;
/* Channel map */
unsigned chans;
chans = AOUT_CHAN_CENTER;
break;
case 2:
- chans = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+ chans = AOUT_CHANS_STEREO;
break;
case 4:
- chans = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
+ chans = AOUT_CHANS_4_0;
break;
case 6:
- chans = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
- | AOUT_CHAN_CENTER | AOUT_CHAN_LFE;
+ chans = AOUT_CHANS_5_1;
+ break;
+ case 8:
+ chans = AOUT_CHANS_7_1;
break;
default:
msg_Err (aout, "unknown %u channels map", par.pchan);
goto error;
}
- f.i_original_channels = f.i_physical_channels = chans;
- aout_FormatPrepare (&f);
+ fmt->i_original_channels = fmt->i_physical_channels = chans;
+ aout_FormatPrepare (fmt);
- aout->format = f;
- aout->sys = (void *)sio;
- aout->pf_play = Play;
- aout->pf_pause = Pause;
- aout->pf_flush = NULL; /* sndio sucks! */
- aout_VolumeSoftInit (aout); /* TODO: sio_onvol() */
+ aout->time_get = TimeGet;
+ aout->play = Play;
+ aout->pause = NULL;
+ aout->flush = Flush;
+ if (sio_onvol(sys->hdl, VolumeChanged, aout))
+ {
+ aout->volume_set = VolumeSet;
+ aout->mute_set = MuteSet;
+ }
+ else
+ {
+ aout->volume_set = NULL;
+ aout->mute_set = NULL;
+ }
- sio_start (sio);
+ sys->started = 0;
+ sys->delay = 0;
+ sio_onmove (sys->hdl, PositionChanged, aout);
+ sio_start (sys->hdl);
return VLC_SUCCESS;
error:
- sio_close (sio);
+ sio_close (sys->hdl);
return VLC_EGENERIC;
}
-static void Close (vlc_object_t *obj)
+static void Stop (audio_output_t *aout)
{
- audio_output_t *aout = (audio_output_t *)obj;
- struct sio_hdl *sio = (void *)aout->sys;
+ aout_sys_t *sys = aout->sys;
- sio_close (sio);
+ sio_close (sys->hdl);
}
-static void Play (audio_output_t *aout, block_t *block)
+static void PositionChanged (void *arg, int delta)
{
- struct sio_hdl *sio = (void *)aout->sys;
- struct sio_par par;
+ audio_output_t *aout = arg;
+ aout_sys_t *sys = aout->sys;
- if (sio_getpar (sio, &par) == 0)
- {
- mtime_t delay = par.bufsz * CLOCK_FREQ / aout->format.i_rate;
-
- delay = block->i_pts - (mdate () - delay);
- if (delay > 0)
- {
- size_t frames = (delay * aout->format.i_rate) / CLOCK_FREQ;
- msg_Dbg (aout, "prepending %zu zeroes", frames);
-
- void *pad = calloc (frames, aout->format.i_bytes_per_frame);
- if (likely(pad != NULL))
- {
- sio_write (sio, pad, frames * aout->format.i_bytes_per_frame);
- free (pad);
- }
- }
- else
- aout_TimeReport (aout, block->i_pts - delay);
- }
+ sys->delay -= delta;
+ sys->started = 1;
+}
- while (block->i_buffer > 0 && !sio_eof (sio))
- {
- size_t bytes = sio_write (sio, block->p_buffer, block->i_buffer);
+static int TimeGet (audio_output_t *aout, mtime_t *restrict delay)
+{
+ aout_sys_t *sys = aout->sys;
- block->p_buffer += bytes;
- block->i_buffer -= bytes;
- /* Note that i_nb_samples and i_pts are corrupted here. */
- }
+ if (!sys->started)
+ return -1;
+ *delay = (mtime_t)sys->delay * CLOCK_FREQ / sys->rate;
+ return 0;
+}
+
+static void Play (audio_output_t *aout, block_t *block)
+{
+ aout_sys_t *sys = aout->sys;
+
+ sio_write (sys->hdl, block->p_buffer, block->i_buffer);
+ sys->delay += block->i_nb_samples;
block_Release (block);
}
-static void Pause (audio_output_t *aout, bool pause, mtime_t date)
+static void Flush (audio_output_t *aout, bool wait)
{
- struct sio_hdl *sio = (void *)aout->sys;
+ aout_sys_t *sys = aout->sys;
- if (pause)
- sio_stop (sio);
- else
- sio_start (sio);
- (void) date;
+ sio_stop (sys->hdl);
+ sys->started = 0;
+ sys->delay = 0;
+ sio_start (sys->hdl);
+ (void)wait;
+}
+
+static void VolumeChanged (void *arg, unsigned volume)
+{
+ audio_output_t *aout = arg;
+ float fvol = (float)volume / (float)SIO_MAXVOL;
+
+ aout_VolumeReport (aout, fvol);
+ aout_MuteReport (aout, volume == 0);
+ if (volume) /* remember last non-zero volume to unmute later */
+ aout->sys->volume = volume;
+}
+
+static int VolumeSet (audio_output_t *aout, float fvol)
+{
+ aout_sys_t *sys = aout->sys;
+ unsigned volume;
+
+ if (fvol < 0)
+ fvol = 0;
+ if (fvol > 1)
+ fvol = 1;
+ volume = lroundf (fvol * SIO_MAXVOL);
+ if (!sys->mute && !sio_setvol (sys->hdl, volume))
+ return -1;
+ sys->volume = volume;
+ return 0;
+}
+
+static int MuteSet (audio_output_t *aout, bool mute)
+{
+ aout_sys_t *sys = aout->sys;
+
+ if (!sio_setvol (sys->hdl, mute ? 0 : sys->volume))
+ return -1;
+
+ sys->mute = mute;
+ return 0;
+}
+
+static int Open (vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = malloc (sizeof (*sys));
+ if (unlikely(sys == NULL))
+ return VLC_ENOMEM;
+
+ aout->sys = sys;
+ aout->start = Start;
+ aout->stop = Stop;
+ /* FIXME: set volume/mute here */
+ return VLC_SUCCESS;
+}
+
+static void Close (vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = aout->sys;
+
+ free (sys);
}
+
projects / vlc / blobdiff