int
audio_device_reconfigure(session_t *sp)
{
audio_config prev_config, *curr_config, *new_config;
audio_port_t iport = 0, oport = 0;
int change_req;
assert(sp->new_config != NULL);
new_config = sp->new_config;
change_req = FALSE;
if (new_config->device == 0) {
/* No request to change audio device */
new_config->device = sp->audio_device;
} else if (new_config->device != sp->audio_device) {
/* Request to change device */
change_req = TRUE;
debug_msg("Change device requested.\n");
}
if (sp->audio_device) {
iport = audio_get_iport(sp->audio_device);
oport = audio_get_oport(sp->audio_device);
}
if (new_config->primary == 0) {
/* No request to change primary encoding */
new_config->primary = codec_get_by_payload(sp->encodings[0]);
} else if (codec_audio_formats_compatible(new_config->primary, codec_get_by_payload(sp->encodings[0])) == FALSE) {
/* Request to change primary and format incompatible so
* device needs rejigging */
change_req = TRUE;
debug_msg("Change primary requested.\n");
} else {
/* Request to change primary to compatible coding. */
sp->encodings[0] = codec_get_payload(new_config->primary);
}
if (new_config->render_3d == -1) {
/* No request to change 3d rendering */
new_config->render_3d = sp->render_3d;
} else if (new_config->render_3d != sp->render_3d) {
change_req = TRUE;
debug_msg("Change 3d rendering enabled requested.\n");
}
if (change_req) {
/* Store current config in case it reconfig attempt fails */
prev_config.device = sp->audio_device;
prev_config.primary = codec_get_by_payload(sp->encodings[0]);
prev_config.render_3d = sp->render_3d;
if (sp->audio_device) {
audio_device_release(sp, sp->audio_device);
}
if (audio_device_attempt_config(sp, new_config)) {
/* New config acceptable */
curr_config = new_config;
} else if (audio_device_attempt_config(sp, &prev_config)) {
/* else attempt to fallback to previous config */
curr_config = &prev_config;
debug_msg("Fellback to old dev config\n");
} else {
/* Fallback to guaranteed config - something
* went badly wrong */
ac_destroy(&new_config);
audio_device_get_safe_config(&new_config);
assert(new_config);
if (audio_device_attempt_config(sp, new_config) == FALSE) {
/* should never get here */
abort();
}
curr_config = new_config;
debug_msg("Fell back to safe config\n");
}
debug_msg("0x%08x 0x%08x\n", prev_config.device, curr_config->device);
if (prev_config.device == curr_config->device) {
debug_msg("Restoring ports\n");
audio_set_iport(curr_config->device, iport);
audio_set_oport(curr_config->device, oport);
} else {
const audio_port_details_t *papd;
/* Ports will be squiffy */
papd = audio_get_iport_details(curr_config->device, 0);
audio_set_iport(curr_config->device, papd->port);
papd = audio_get_oport_details(curr_config->device, 0);
audio_set_oport(curr_config->device, papd->port);
}
audio_loopback(curr_config->device, sp->loopback_gain);
sp->audio_device = curr_config->device;
sp->encodings[0] = codec_get_payload(curr_config->primary);
/* If using redundancy check it is still relevent */
if (sp->num_encodings > 1 &&
!codec_audio_formats_compatible(curr_config->primary, codec_get_by_payload(sp->encodings[1]))) {
const cc_details_t *ccd;
channel_encoder_destroy(&sp->channel_coder);
ccd = channel_get_null_coder();
channel_encoder_create(ccd->descriptor, &sp->channel_coder);
sp->num_encodings = 1;
}
sp->render_3d = curr_config->render_3d;
} else {
debug_msg("audio device reconfigure - nothing to do.\n");
if (tx_is_sending(sp->tb)) {
tx_stop(sp->tb);
tx_start(sp->tb);
}
}
tx_igain_update(sp->tb);
ac_destroy(&sp->new_config);
return change_req;
}
static void
red_split_unit(u_char ppt, /* Primary payload type */
u_char bpt, /* Block payload type */
u_char *b, /* Block pointer */
uint32_t blen, /* Block len */
timestamp_t playout, /* Block playout time */
struct s_pb *out) /* media buffer */
{
const codec_format_t *cf;
media_data *md;
codec_id_t cid, pid;
coded_unit *cu;
u_char *p,*pe;
timestamp_t step;
pid = codec_get_by_payload(ppt);
if (!pid) {
debug_msg("Payload not recognized\n");
return;
}
cid = codec_get_by_payload(bpt);
if (!cid) {
debug_msg("Payload not recognized\n");
return;
}
if (!codec_audio_formats_compatible(pid, cid)) {
debug_msg("Primary (%d) and redundant (%d) not compatible\n", ppt, bpt);
return;
}
cf = codec_get_format(cid);
assert(cf != NULL);
step = ts_map32(cf->format.sample_rate, codec_get_samples_per_frame(cid));
p = b;
pe = b + blen;
while(p < pe) {
cu = (coded_unit*)block_alloc(sizeof(coded_unit));
cu->id = cid;
if (p == b && cf->mean_per_packet_state_size) {
cu->state_len = cf->mean_per_packet_state_size;
cu->state = block_alloc(cu->state_len);
memcpy(cu->state, p, cu->state_len);
p += cu->state_len;
} else {
cu->state = NULL;
cu->state_len = 0;
}
cu->data_len = (uint16_t)codec_peek_frame_size(cid, p, (uint16_t)(pe - p));
cu->data = block_alloc(cu->data_len);
memcpy(cu->data, p, cu->data_len);
p += cu->data_len;
md = red_media_data_create_or_get(out, playout);
if (md->nrep == MAX_MEDIA_UNITS) continue;
if (place_unit(md, cu) == TRUE) {
playout = ts_add(playout, step);
} else {
/* unit could not be placed - destroy */
if (cu->state_len) {
block_free(cu->state, cu->state_len);
}
block_free(cu->data, cu->data_len);
block_free(cu, sizeof(coded_unit));
}
}
}
