{
snd_pcm_t *pcm;
unsigned rate; /**< Sample rate */
+ vlc_fourcc_t format; /**< Sample format */
uint8_t chans_table[AOUT_CHAN_MAX]; /**< Channels order table */
uint8_t chans_to_reorder; /**< Number of channels to reorder */
- uint8_t bits; /**< Bits per sample per channel */
+
bool soft_mute;
float soft_gain;
+ char *device;
};
-#include "volume.h"
+#include "audio_output/volume.h"
#define A52_FRAME_NB 1536
}
#define DumpDeviceStatus(o, p) DumpDeviceStatus(VLC_OBJECT(o), p)
-static unsigned SetupChannelsUnknown (vlc_object_t *obj,
- uint16_t *restrict mask)
-{
- uint16_t map = var_InheritInteger (obj, "alsa-audio-channels");
- uint16_t chans = *mask & map;
-
- if (unlikely(chans == 0)) /* WTH? */
- chans = AOUT_CHANS_STEREO;
-
- if (popcount (chans) < popcount (*mask))
- msg_Dbg (obj, "downmixing from %u to %u channels",
- popcount (*mask), popcount (chans));
- else
- msg_Dbg (obj, "keeping %u channels", popcount (chans));
- *mask = chans;
- return 0;
-}
-
#if (SND_LIB_VERSION >= 0x01001B)
static const uint16_t vlc_chans[] = {
[SND_CHMAP_MONO] = AOUT_CHAN_CENTER,
* Compares a fixed ALSA channels map with the VLC channels order.
*/
static unsigned SetupChannelsFixed(const snd_pcm_chmap_t *restrict map,
- uint16_t *restrict mask, uint8_t *restrict tab)
+ uint16_t *restrict maskp, uint8_t *restrict tab)
{
uint32_t chans_out[AOUT_CHAN_MAX];
+ uint16_t mask = 0;
for (unsigned i = 0; i < map->channels; i++)
{
uint_fast16_t vlc_chan = vlc_chans[map->pos[i]];
chans_out[i] = vlc_chan;
- *mask |= vlc_chan;
+ mask |= vlc_chan;
}
- return aout_CheckChannelReorder(NULL, chans_out, *mask, tab);
+ *maskp = mask;
+ return aout_CheckChannelReorder(NULL, chans_out, mask, tab);
}
/**
* Negotiate channels mapping.
*/
static unsigned SetupChannels (vlc_object_t *obj, snd_pcm_t *pcm,
- uint16_t *restrict mask, uint8_t *restrict tab)
+ uint16_t *restrict mask, uint8_t *restrict tab)
{
snd_pcm_chmap_query_t **maps = snd_pcm_query_chmaps (pcm);
- if (tab == NULL)
- { /* Fallback to manual configuration */
+ if (maps == NULL)
+ { /* Fallback to default order if unknown */
msg_Dbg(obj, "channels map not provided");
- return SetupChannelsUnknown (obj, mask);
+ return 0;
}
/* Find most appropriate available channels map */
- unsigned best_offset;
- unsigned best_score = 0;
+ unsigned best_offset, best_score = 0, to_reorder = 0;
for (snd_pcm_chmap_query_t *const *p = maps; *p != NULL; p++)
{
if (chans == -1)
continue;
- unsigned score = popcount (chans & *mask);
+ unsigned score = (popcount (chans & *mask) << 8)
+ | (255 - popcount (chans));
if (score > best_score)
{
best_offset = p - maps;
if (best_score == 0)
{
msg_Err (obj, "cannot find supported channels map");
- snd_pcm_free_chmaps (maps);
- return SetupChannelsUnknown (obj, mask);
+ goto out;
}
const snd_pcm_chmap_t *map = &maps[best_offset]->map;
msg_Dbg (obj, "using channels map %u, type %u, %u channel(s)", best_offset,
- maps[best_offset]->type, best_score);
+ maps[best_offset]->type, map->channels);
/* Setup channels map */
- unsigned to_reorder = SetupChannelsFixed(map, mask, tab);
+ to_reorder = SetupChannelsFixed(map, mask, tab);
/* TODO: avoid reordering for PAIRED and VAR types */
//snd_pcm_set_chmap (pcm, ...)
-
+out:
snd_pcm_free_chmaps (maps);
return to_reorder;
}
#else /* (SND_LIB_VERSION < 0x01001B) */
-# define SetupChannels(obj, pcm, mask, tab) \
- SetupChannelsUnknown(obj, mask)
+# define SetupChannels(obj, pcm, mask, tab) (0)
#endif
static int TimeGet (audio_output_t *aout, mtime_t *);
static int Start (audio_output_t *aout, audio_sample_format_t *restrict fmt)
{
aout_sys_t *sys = aout->sys;
-
- /* Get device name */
- char *device = var_InheritString (aout, "alsa-audio-device");
- if (unlikely(device == NULL))
- return VLC_ENOMEM;
-
snd_pcm_format_t pcm_format; /* ALSA sample format */
bool spdif = false;
switch (fmt->i_format)
{
- case VLC_CODEC_F64B:
- pcm_format = SND_PCM_FORMAT_FLOAT64_BE;
- break;
- case VLC_CODEC_F64L:
- pcm_format = SND_PCM_FORMAT_FLOAT64_LE;
- break;
- case VLC_CODEC_F32B:
- pcm_format = SND_PCM_FORMAT_FLOAT_BE;
+ case VLC_CODEC_FL64:
+ pcm_format = SND_PCM_FORMAT_FLOAT64;
break;
- case VLC_CODEC_F32L:
- pcm_format = SND_PCM_FORMAT_FLOAT_LE;
+ case VLC_CODEC_FL32:
+ pcm_format = SND_PCM_FORMAT_FLOAT;
break;
- case VLC_CODEC_S32B:
- pcm_format = SND_PCM_FORMAT_S32_BE;
+ case VLC_CODEC_S32N:
+ pcm_format = SND_PCM_FORMAT_S32;
break;
- case VLC_CODEC_S32L:
- pcm_format = SND_PCM_FORMAT_S32_LE;
- break;
- case VLC_CODEC_S24B:
- pcm_format = SND_PCM_FORMAT_S24_3BE;
- break;
- case VLC_CODEC_S24L:
- pcm_format = SND_PCM_FORMAT_S24_3LE;
- break;
- case VLC_CODEC_U24B:
- pcm_format = SND_PCM_FORMAT_U24_3BE;
- break;
- case VLC_CODEC_U24L:
- pcm_format = SND_PCM_FORMAT_U24_3LE;
- break;
- case VLC_CODEC_S16B:
- pcm_format = SND_PCM_FORMAT_S16_BE;
- break;
- case VLC_CODEC_S16L:
- pcm_format = SND_PCM_FORMAT_S16_LE;
- break;
- case VLC_CODEC_U16B:
- pcm_format = SND_PCM_FORMAT_U16_BE;
- break;
- case VLC_CODEC_U16L:
- pcm_format = SND_PCM_FORMAT_U16_LE;
- break;
- case VLC_CODEC_S8:
- pcm_format = SND_PCM_FORMAT_S8;
+ case VLC_CODEC_S16N:
+ pcm_format = SND_PCM_FORMAT_S16;
break;
case VLC_CODEC_U8:
pcm_format = SND_PCM_FORMAT_U8;
}
}
- /* Choose the IEC device for S/PDIF output:
- if the device is overridden by the user then it will be the one.
- Otherwise we compute the default device based on the output format. */
- if (spdif && !strcmp (device, "default"))
+ const char *device = sys->device;
+ char *devbuf = NULL;
+ /* Choose the IEC device for S/PDIF output */
+ if (spdif)
{
unsigned aes3;
break;
}
- free (device);
- if (asprintf (&device,
- "iec958:AES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x",
+ char *opt = NULL;
+ if (!strcmp (device, "default"))
+ device = "iec958"; /* TODO: hdmi */
+ else
+ {
+ opt = strchr(device, ':');
+ if (opt && opt[1] == '\0') {
+ /* if device is terminated by : but there's no options,
+ * remove ':', we'll add it back in the format string. */
+ *opt = '\0';
+ opt = NULL;
+ }
+ }
+
+ if (asprintf (&devbuf,
+ "%s%cAES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x", device,
+ opt ? ',' : ':',
IEC958_AES0_CON_EMPHASIS_NONE | IEC958_AES0_NONAUDIO,
IEC958_AES1_CON_ORIGINAL | IEC958_AES1_CON_PCM_CODER,
0, aes3) == -1)
return VLC_ENOMEM;
+ device = devbuf;
}
/* Open the device */
const int mode = SND_PCM_NO_AUTO_RESAMPLE;
int val = snd_pcm_open (&pcm, device, SND_PCM_STREAM_PLAYBACK, mode);
+ free (devbuf);
if (val != 0)
{
- msg_Err (aout, "cannot open ALSA device \"%s\": %s", device,
+ msg_Err (aout, "cannot open ALSA device \"%s\": %s", sys->device,
snd_strerror (val));
dialog_Fatal (aout, _("Audio output failed"),
_("The audio device \"%s\" could not be used:\n%s."),
- device, snd_strerror (val));
- free (device);
+ sys->device, snd_strerror (val));
return VLC_EGENERIC;
}
sys->pcm = pcm;
/* Print some potentially useful debug */
- msg_Dbg (aout, "using ALSA device: %s", device);
- aout_DeviceReport (aout, device);
- free (device);
+ msg_Dbg (aout, "using ALSA device: %s", sys->device);
DumpDevice (VLC_OBJECT(aout), pcm);
/* Get Initial hardware parameters */
unsigned channels;
if (!spdif)
{
- sys->chans_to_reorder = SetupChannels (VLC_OBJECT(aout), pcm,
- &fmt->i_physical_channels, sys->chans_table);
- channels = popcount (fmt->i_physical_channels);
+ uint16_t map = var_InheritInteger (aout, "alsa-audio-channels");
+
+ sys->chans_to_reorder = SetupChannels (VLC_OBJECT(aout), pcm, &map,
+ sys->chans_table);
+ fmt->i_physical_channels = map;
+ fmt->i_original_channels = map;
+ channels = popcount (map);
}
else
+ {
+ sys->chans_to_reorder = 0;
channels = 2;
- fmt->i_original_channels = fmt->i_physical_channels;
+ }
/* By default, ALSA plug will pad missing channels with zeroes, which is
* usually fine. However, it will also discard extraneous channels, which
}
sys->rate = fmt->i_rate;
+#if 1 /* work-around for period-long latency outputs (e.g. PulseAudio): */
+ param = AOUT_MIN_PREPARE_TIME;
+ val = snd_pcm_hw_params_set_period_time_near (pcm, hw, ¶m, NULL);
+ if (val)
+ {
+ msg_Err (aout, "cannot set period: %s", snd_strerror (val));
+ goto error;
+ }
+#endif
/* Set buffer size */
param = AOUT_MAX_ADVANCE_TIME;
val = snd_pcm_hw_params_set_buffer_time_near (pcm, hw, ¶m, NULL);
}
else
param /= 2;
-#else /* work-around for period-long latency outputs (e.g. PulseAudio): */
- param = AOUT_MIN_PREPARE_TIME;
-#endif
val = snd_pcm_hw_params_set_period_time_near (pcm, hw, ¶m, NULL);
if (val)
{
msg_Err (aout, "cannot set period: %s", snd_strerror (val));
goto error;
}
+#endif
/* Commit hardware parameters */
val = snd_pcm_hw_params (pcm, hw);
fmt->i_bytes_per_frame = AOUT_SPDIF_SIZE;
fmt->i_frame_length = A52_FRAME_NB;
}
- else
- {
- aout_FormatPrepare (fmt);
- sys->bits = fmt->i_bitspersample;
- }
+ sys->format = fmt->i_format;
aout->time_get = TimeGet;
aout->play = Play;
error:
snd_pcm_close (pcm);
- free (device);
return VLC_EGENERIC;
}
if (sys->chans_to_reorder != 0)
aout_ChannelReorder(block->p_buffer, block->i_buffer,
- sys->chans_to_reorder, sys->chans_table, sys->bits);
+ sys->chans_to_reorder, sys->chans_table, sys->format);
snd_pcm_t *pcm = sys->pcm;
return n;
}
-static int DevicesEnum (audio_output_t *aout, char ***idp, char ***namep)
-{
- return EnumDevices (VLC_OBJECT(aout), NULL, idp, namep);
-}
-
static int DeviceSelect (audio_output_t *aout, const char *id)
{
- if (!var_Type (aout, "alsa-audio-device"))
- var_Create (aout, "alsa-audio-device", VLC_VAR_STRING);
- var_SetString (aout, "alsa-audio-device", id);
+ aout_sys_t *sys = aout->sys;
+
+ char *device = strdup (id ? id : "default");
+ if (unlikely(device == NULL))
+ return -1;
+ free (sys->device);
+ sys->device = device;
+ aout_DeviceReport (aout, device);
aout_RestartRequest (aout, AOUT_RESTART_OUTPUT);
return 0;
}
if (unlikely(sys == NULL))
return VLC_ENOMEM;
+ sys->device = var_InheritString (aout, "alsa-audio-device");
+ if (unlikely(sys->device == NULL))
+ goto error;
+
aout->sys = sys;
aout->start = Start;
aout->stop = Stop;
aout_SoftVolumeInit (aout);
- aout->device_enum = DevicesEnum;
aout->device_select = DeviceSelect;
+ aout_DeviceReport (aout, sys->device);
+
+ /* ALSA does not support hot-plug events so list devices at startup */
+ char **ids, **names;
+ int count = EnumDevices (VLC_OBJECT(aout), NULL, &ids, &names);
+ if (count >= 0)
+ {
+ for (int i = 0; i < count; i++)
+ {
+ aout_HotplugReport (aout, ids[i], names[i]);
+ free (names[i]);
+ free (ids[i]);
+ }
+ free (names);
+ free (ids);
+ }
+
return VLC_SUCCESS;
+error:
+ free (sys);
+ return VLC_ENOMEM;
}
static void Close(vlc_object_t *obj)
audio_output_t *aout = (audio_output_t *)obj;
aout_sys_t *sys = aout->sys;
- free(sys);
+ free (sys->device);
+ free (sys);
}
projects / vlc / blobdiff