int
codec_unmap_payload(codec_id_t id, u_char pt)
{
if (payload_is_valid(pt) &&
codec_id_is_valid(id) &&
payload_map[pt] == id) {
payload_map[pt] = 0;
codec_map[CODEC_GET_IFS_INDEX(id)][CODEC_GET_FMT_INDEX(id)] = CODEC_PAYLOAD_DYNAMIC;
return TRUE;
}
debug_msg("Failed to unmap payload\n");
return FALSE;
}
u_char
codec_get_payload(codec_id_t id)
{
u_char pt;
assert(codec_id_is_valid(id));
pt = codec_map[CODEC_GET_IFS_INDEX(id)][CODEC_GET_FMT_INDEX(id)];
if (payload_is_valid(pt)) {
assert(codec_get_by_payload(pt) == id);
return pt;
}
return CODEC_PAYLOAD_DYNAMIC;
}
codec_id_t
codec_get_by_payload (u_char pt)
{
if (payload_is_valid(pt)) {
#ifdef DEBUG
if (payload_map[pt] == 0) {
debug_msg("No codec for payload %d\n", pt);
}
#endif
return payload_map[pt];
} else {
debug_msg("codec_get_by_payload - invalid payload (%d)\n", pt);
return 0;
}
}
int
codec_map_payload(codec_id_t id, u_char pt)
{
if (payload_is_valid(pt) && codec_id_is_valid(id)) {
if (payload_map[pt] != 0) {
codec_unmap_payload(id, pt);
}
payload_map[pt] = id;
codec_map[CODEC_GET_IFS_INDEX(id)][CODEC_GET_FMT_INDEX(id)] = pt;
return TRUE;
}
#ifdef DEBUG
{
const codec_format_t *cf;
cf = codec_get_format(id);
debug_msg("Failed to map payload for %s\n", cf->long_name);
}
#endif /* DEBUG */
return FALSE;
}
/* Adds header to next free slot in channel_data */
static void
add_hdr(channel_unit *chu, int hdr_type, codec_id_t cid, uint32_t uo, uint32_t len)
{
uint32_t so; /* sample time offset */
u_char pt;
assert(chu != NULL);
assert(chu->data == NULL);
pt = codec_get_payload(cid);
assert(payload_is_valid(pt));
so = codec_get_samples_per_frame(cid) * uo;
assert(so <= RED_MAX_OFFSET);
assert(len <= RED_MAX_LEN );
if (hdr_type == RED_EXTRA) {
uint32_t *h;
h = (uint32_t*)block_alloc(4);
RED_HDR32_INIT(*h);
RED_HDR32_SET_PT(*h, (uint32_t)pt);
RED_HDR32_SET_OFF(*h, so);
RED_HDR32_SET_LEN(*h, len);
*h = htonl(*h);
chu->data = (u_char*)h;
chu->data_len = sizeof(*h);
} else {
u_char *h;
assert(hdr_type == RED_PRIMARY);
h = (u_char*)block_alloc(1);
RED_HDR8_INIT(*h);
RED_HDR8_SET_PT(*h, pt);
chu->data = h;
chu->data_len = sizeof(*h);
}
}
