bool ca_init_chmap(struct ao *ao, AudioDeviceID device)
{
void *ta_ctx = talloc_new(NULL);
struct mp_chmap_sel chmap_sel = {.tmp = ta_ctx};
struct mp_chmap chmap = {0};
AudioChannelLayout *ml = ca_query_layout(ao, device, ta_ctx);
if (ml && ca_layout_to_mp_chmap(ao, ml, &chmap))
mp_chmap_sel_add_map(&chmap_sel, &chmap);
AudioChannelLayout *sl = ca_query_stereo_layout(ao, device, ta_ctx);
if (sl && ca_layout_to_mp_chmap(ao, sl, &chmap))
mp_chmap_sel_add_map(&chmap_sel, &chmap);
if (!ao_chmap_sel_adjust(ao, &chmap_sel, &ao->channels)) {
MP_ERR(ao, "could not select a suitable channel map among the "
"hardware supported ones. Make sure to configure your "
"output device correctly in 'Audio MIDI Setup.app'\n");
goto coreaudio_error;
}
talloc_free(ta_ctx);
return true;
coreaudio_error:
talloc_free(ta_ctx);
return false;
}
static void ca_retrieve_layouts(struct ao *ao, struct mp_chmap_sel *s,
AudioDeviceID device)
{
void *ta_ctx = talloc_new(NULL);
struct mp_chmap chmap;
AudioChannelLayout *ml = ca_query_layout(ao, device, ta_ctx);
if (ml && ca_layout_to_mp_chmap(ao, ml, &chmap))
mp_chmap_sel_add_map(s, &chmap);
AudioChannelLayout *sl = ca_query_stereo_layout(ao, device, ta_ctx);
if (sl && ca_layout_to_mp_chmap(ao, sl, &chmap))
mp_chmap_sel_add_map(s, &chmap);
talloc_free(ta_ctx);
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
ao->untimed = priv->untimed;
struct mp_chmap_sel sel = {.tmp = ao};
if (priv->channel_layouts) {
for (int n = 0; priv->channel_layouts[n]; n++) {
struct mp_chmap map = {0};
if (!mp_chmap_from_str(&map, bstr0(priv->channel_layouts[n]))) {
MP_FATAL(ao, "Invalid channel map in option.\n");
return -1;
}
mp_chmap_sel_add_map(&sel, &map);
}
} else {
mp_chmap_sel_add_any(&sel);
}
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
mp_chmap_from_channels(&ao->channels, 2);
priv->latency = priv->latency_sec * ao->samplerate;
// A "buffer" for this many seconds of audio
int bursts = (int)(ao->samplerate * priv->bufferlen + 1) / priv->outburst;
priv->buffersize = priv->outburst * bursts + priv->latency;
priv->last_time = mp_time_sec();
return 0;
}
// fmt carries the input format. Change it to the best next-possible format
// the encoder likely accepts.
static void select_encode_format(AVCodecContext *c, struct mp_audio *fmt)
{
int formats[AF_FORMAT_COUNT];
af_get_best_sample_formats(fmt->format, formats);
for (int n = 0; formats[n]; n++) {
const enum AVSampleFormat *lf = c->codec->sample_fmts;
for (int i = 0; lf && lf[i] != AV_SAMPLE_FMT_NONE; i++) {
int mpfmt = af_from_avformat(lf[i]);
if (mpfmt && mpfmt == formats[n]) {
mp_audio_set_format(fmt, mpfmt);
goto done_fmt;
}
}
}
done_fmt: ;
int rate =
af_select_best_samplerate(fmt->rate, c->codec->supported_samplerates);
if (rate > 0)
fmt->rate = rate;
struct mp_chmap_sel sel = {0};
const uint64_t *lch = c->codec->channel_layouts;
for (int n = 0; lch && lch[n]; n++) {
struct mp_chmap chmap = {0};
mp_chmap_from_lavc(&chmap, lch[n]);
mp_chmap_sel_add_map(&sel, &chmap);
}
struct mp_chmap res = fmt->channels;
mp_chmap_sel_adjust(&sel, &res);
if (!mp_chmap_is_empty(&res))
mp_audio_set_channels(fmt, &res);
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
ao->untimed = priv->untimed;
struct mp_chmap_sel sel = {.tmp = ao};
if (priv->channel_layouts.num_chmaps) {
for (int n = 0; n < priv->channel_layouts.num_chmaps; n++)
mp_chmap_sel_add_map(&sel, &priv->channel_layouts.chmaps[n]);
} else {
mp_chmap_sel_add_any(&sel);
}
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
mp_chmap_from_channels(&ao->channels, 2);
priv->latency = priv->latency_sec * ao->samplerate;
// A "buffer" for this many seconds of audio
int bursts = (int)(ao->samplerate * priv->bufferlen + 1) / priv->outburst;
priv->buffersize = priv->outburst * bursts + priv->latency;
priv->last_time = mp_time_sec();
return 0;
}
bool ca_init_chmap(struct ao *ao, AudioDeviceID device)
{
struct mp_chmap_sel chmap_sel = {0};
ca_retrieve_layouts(ao, &chmap_sel, device);
if (!chmap_sel.num_chmaps)
mp_chmap_sel_add_map(&chmap_sel, &(struct mp_chmap)MP_CHMAP_INIT_STEREO);
mp_chmap_sel_add_map(&chmap_sel, &(struct mp_chmap)MP_CHMAP_INIT_MONO);
if (!ao_chmap_sel_adjust(ao, &chmap_sel, &ao->channels)) {
MP_ERR(ao, "could not select a suitable channel map among the "
"hardware supported ones. Make sure to configure your "
"output device correctly in 'Audio MIDI Setup.app'\n");
return false;
}
return true;
}
/*
* open device and setup parameters
* return: 0=success -1=fail
*/
static int init(struct ao *ao)
{
struct priv *p = ao->priv;
struct af_to_par {
int format, bits, sig, le;
} static const af_to_par[] = {
{AF_FORMAT_U8, 8, 0, 0},
{AF_FORMAT_S8, 8, 1, 0},
{AF_FORMAT_U16_LE, 16, 0, 1},
{AF_FORMAT_U16_BE, 16, 0, 0},
{AF_FORMAT_S16_LE, 16, 1, 1},
{AF_FORMAT_S16_BE, 16, 1, 0},
{AF_FORMAT_U24_LE, 16, 0, 1},
{AF_FORMAT_U24_BE, 24, 0, 0},
{AF_FORMAT_S24_LE, 24, 1, 1},
{AF_FORMAT_S24_BE, 24, 1, 0},
{AF_FORMAT_U32_LE, 32, 0, 1},
{AF_FORMAT_U32_BE, 32, 0, 0},
{AF_FORMAT_S32_LE, 32, 1, 1},
{AF_FORMAT_S32_BE, 32, 1, 0}
}, *ap;
int i;
p->hdl = sio_open(p->dev, SIO_PLAY, 0);
if (p->hdl == NULL) {
MP_ERR(ao, "can't open sndio %s\n", p->dev);
goto error;
}
ao->format = af_fmt_from_planar(ao->format);
sio_initpar(&p->par);
for (i = 0, ap = af_to_par;; i++, ap++) {
if (i == sizeof(af_to_par) / sizeof(struct af_to_par)) {
MP_VERBOSE(ao, "unsupported format\n");
p->par.bits = 16;
p->par.sig = 1;
p->par.le = SIO_LE_NATIVE;
break;
}
if (ap->format == ao->format) {
p->par.bits = ap->bits;
p->par.sig = ap->sig;
if (ap->bits > 8)
p->par.le = ap->le;
if (ap->bits != SIO_BPS(ap->bits))
p->par.bps = ap->bits / 8;
break;
}
}
p->par.rate = ao->samplerate;
struct mp_chmap_sel sel = {0};
for (int n = 0; n < MP_NUM_CHANNELS+1; n++)
mp_chmap_sel_add_map(&sel, &sndio_layouts[n]);
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
goto error;
p->par.pchan = ao->channels.num;
p->par.appbufsz = p->par.rate * 250 / 1000; /* 250ms buffer */
p->par.round = p->par.rate * 10 / 1000; /* 10ms block size */
if (!sio_setpar(p->hdl, &p->par)) {
MP_ERR(ao, "couldn't set params\n");
goto error;
}
if (!sio_getpar(p->hdl, &p->par)) {
MP_ERR(ao, "couldn't get params\n");
goto error;
}
if (p->par.bits == 8 && p->par.bps == 1) {
ao->format = p->par.sig ? AF_FORMAT_S8 : AF_FORMAT_U8;
} else if (p->par.bits == 16 && p->par.bps == 2) {
ao->format = p->par.sig ?
(p->par.le ? AF_FORMAT_S16_LE : AF_FORMAT_S16_BE) :
(p->par.le ? AF_FORMAT_U16_LE : AF_FORMAT_U16_BE);
} else if ((p->par.bits == 24 || p->par.msb) && p->par.bps == 3) {
ao->format = p->par.sig ?
(p->par.le ? AF_FORMAT_S24_LE : AF_FORMAT_S24_BE) :
(p->par.le ? AF_FORMAT_U24_LE : AF_FORMAT_U24_BE);
} else if ((p->par.bits == 32 || p->par.msb) && p->par.bps == 4) {
ao->format = p->par.sig ?
(p->par.le ? AF_FORMAT_S32_LE : AF_FORMAT_S32_BE) :
(p->par.le ? AF_FORMAT_U32_LE : AF_FORMAT_U32_BE);
} else {
MP_ERR(ao, "couldn't set format\n");
goto error;
}
ao->bps = p->par.bps * p->par.pchan * p->par.rate;
p->havevol = sio_onvol(p->hdl, volcb, p);
sio_onmove(p->hdl, movecb, p);
p->delay = 0;
if (!sio_start(p->hdl))
MP_ERR(ao, "init: couldn't start\n");
p->pfd = calloc (sio_nfds(p->hdl), sizeof (struct pollfd));
if (!p->pfd)
goto error;
return 0;
error:
if (p->hdl)
sio_close(p->hdl);
return -1;
}
