diff options
Diffstat (limited to 'sacn.c')
| -rw-r--r-- | sacn.c | 112 |
1 files changed, 105 insertions, 7 deletions
@@ -18,11 +18,13 @@ static struct /*_sacn_global_config*/ { uint8_t cid[16]; size_t fds; sacn_fd* fd; + uint64_t last_announce; } global_cfg = { .source_name = "MIDIMonster", .cid = {'M', 'I', 'D', 'I', 'M', 'o', 'n', 's', 't', 'e', 'r'}, .fds = 0, - .fd = NULL + .fd = NULL, + .last_announce = 0 }; int init(){ @@ -122,6 +124,8 @@ static int sacn_listener(char* host, char* port, uint8_t fd_flags){ fprintf(stderr, "sACN backend interface %zu bound to %s port %s\n", global_cfg.fds, host, port); global_cfg.fd[global_cfg.fds].fd = fd; global_cfg.fd[global_cfg.fds].flags = fd_flags; + global_cfg.fd[global_cfg.fds].universes = 0; + global_cfg.fd[global_cfg.fds].universe = NULL; global_cfg.fds++; return 0; } @@ -253,6 +257,7 @@ static int sacn_configure_instance(instance* inst, char* option, char* value){ return 0; } + fprintf(stderr, "Unknown configuration option %s for sACN backend\n", option); return 1; } @@ -316,12 +321,79 @@ static channel* sacn_channel(instance* inst, char* spec){ } static int sacn_set(instance* inst, size_t num, channel** c, channel_value* v){ + size_t u, mark = 0; + sacn_instance_data* data = (sacn_instance_data*) inst->impl; + if(!num){ return 0; } - //TODO - return 1; + if(!data->xmit_prio){ + fprintf(stderr, "sACN instance %s not enabled for output (%zu channel events)\n", inst->name, num); + return 0; + } + + for(u = 0; u < num; u++){ + if(IS_WIDE(data->data.map[c[u]->ident])){ + uint32_t val = v[u].normalised * ((double) 0xFFFF); + + if(data->data.out[c[u]->ident] != ((val >> 8) & 0xFF)){ + mark = 1; + data->data.out[c[u]->ident] = (val >> 8) & 0xFF; + } + + if(data->data.out[MAPPED_CHANNEL(data->data.map[c[u]->ident])] != (val & 0xFF)){ + mark = 1; + data->data.out[MAPPED_CHANNEL(data->data.map[c[u]->ident])] = val & 0xFF; + } + } + else if(data->data.out[c[u]->ident] != (v[u].normalised * 255.0)){ + mark = 1; + data->data.out[c[u]->ident] = v[u].normalised * 255.0; + } + } + + //send packet if required + if(mark){ + sacn_data_pdu pdu = { + .root = { + .preamble_size = htobe16(0x10), + .postamble_size = 0, + .magic = { 0 }, //memcpy'd + .flags = htobe16(0x7000 | 0x026e), + .vector = htobe32(ROOT_E131_DATA), + .sender_cid = { 0 }, //memcpy'd + .frame_flags = htobe16(0x7000 | 0x0258), + .frame_vector = htobe32(FRAME_E131_DATA) + }, + .data = { + .source_name = "", //memcpy'd + .priority = data->xmit_prio, + .sync_addr = 0, + .sequence = data->data.last_seq++, + .options = 0, + .universe = htobe16(data->uni), + .flags = htobe16(0x7000 | 0x0205), + .vector = DMP_SET_PROPERTY, + .format = 0xA1, + .startcode_offset = 0, + .address_increment = htobe16(1), + .channels = htobe16(513), + .data = { 0 } //memcpy'd + } + }; + + memcpy(pdu.root.magic, SACN_PDU_MAGIC, sizeof(pdu.root.magic)); + memcpy(pdu.root.sender_cid, global_cfg.cid, sizeof(pdu.root.sender_cid)); + memcpy(pdu.data.source_name, global_cfg.source_name, sizeof(pdu.data.source_name)); + memcpy((((uint8_t*)pdu.data.data) + 1), data->data.out, 512); + + if(sendto(global_cfg.fd[data->fd_index].fd, &pdu, sizeof(pdu), 0, (struct sockaddr*) &data->dest_addr, data->dest_len) < 0){ + fprintf(stderr, "Failed to output sACN frame for instance %s: %s\n", inst->name, strerror(errno)); + } + } + + return 0; } static int sacn_process_frame(instance* inst, sacn_frame_root* frame, sacn_frame_data* data){ @@ -413,6 +485,11 @@ static int sacn_handle(size_t num, managed_fd* fds){ sacn_frame_root* frame = (sacn_frame_root*) recv_buf; sacn_frame_data* data = (sacn_frame_data*) (recv_buf + sizeof(sacn_frame_root)); + if(global_cfg.last_announce > SACN_DISCOVERY_TIMEOUT){ + //TODO send universe discovery pdu + //TODO this requires the core to provide time deltas + } + //early exit if(!num){ return 0; @@ -422,7 +499,7 @@ static int sacn_handle(size_t num, managed_fd* fds){ do{ bytes_read = recv(fds[u].fd, recv_buf, sizeof(recv_buf), 0); if(bytes_read > 0 && bytes_read > sizeof(sacn_frame_root)){ - if(!memcmp(frame->magic, "ASC-E1.17\0\0\0", 12) + if(!memcmp(frame->magic, SACN_PDU_MAGIC, 12) && be16toh(frame->preamble_size) == 0x10 && frame->postamble_size == 0 && be32toh(frame->vector) == ROOT_E131_DATA @@ -460,8 +537,9 @@ static int sacn_start(){ .label = 0 }; struct ip_mreq mcast_req = { - .imr_interface = INADDR_ANY + .imr_interface = { INADDR_ANY } }; + struct sockaddr_in* dest_v4 = NULL; //fetch all instances if(mm_backend_instances(BACKEND_NAME, &n, &inst)){ @@ -503,9 +581,28 @@ static int sacn_start(){ if(setsockopt(global_cfg.fd[data->fd_index].fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mcast_req, sizeof(mcast_req))){ fprintf(stderr, "Failed to join Multicast group for sACN universe %u on instance %s: %s\n", data->uni, inst[u]->name, strerror(errno)); } - } - //TODO Create list of advertised universes for descriptors + if(data->xmit_prio){ + //add to list of advertised universes for this fd + global_cfg.fd[data->fd_index].universe = realloc(global_cfg.fd[data->fd_index].universe, (global_cfg.fd[data->fd_index].universes + 1) * sizeof(uint16_t)); + if(!global_cfg.fd[data->fd_index].universe){ + fprintf(stderr, "Failed to allocate memory\n"); + goto bail; + } + + global_cfg.fd[data->fd_index].universe[global_cfg.fd[data->fd_index].universes] = data->uni; + global_cfg.fd[data->fd_index].universes++; + + //generate multicast destination address if none set + if(!data->dest_len){ + data->dest_len = sizeof(struct sockaddr_in); + dest_v4 = (struct sockaddr_in*) (&data->dest_addr); + dest_v4->sin_family = AF_INET; + dest_v4->sin_port = htobe16(strtoul(SACN_PORT, NULL, 10)); + dest_v4->sin_addr = mcast_req.imr_multiaddr; + } + } + } fprintf(stderr, "sACN backend registering %zu descriptors to core\n", global_cfg.fds); for(u = 0; u < global_cfg.fds; u++){ @@ -536,6 +633,7 @@ static int sacn_shutdown(){ for(p = 0; p < global_cfg.fds; p++){ close(global_cfg.fd[p].fd); + free(global_cfg.fd[p].universe); } free(global_cfg.fd); fprintf(stderr, "sACN backend shut down\n"); |