- if (is_errno(ret, EINTR) || is_errno(ret, EAGAIN))
- goto success;
- t->error = ret;
- return;
- }
- t->error = -E_RECV_EOF;
- if (!ret)
- return;
- packet_size = ret;
- t->error = -E_UDP_SHORT_PACKET;
- if (packet_size < UDP_AUDIO_HEADER_LEN)
- return;
- t->error = -E_UDP_NO_MAGIC;
- if (udp_check_magic(tmpbuf, packet_size) < 0)
- return;
- stream_type = udp_read_stream_type(tmpbuf);
- packet_type = udp_read_packet_type(tmpbuf);
-// PARA_INFO_LOG("packet type: %d, stream type: %d,"
-// " loaded: %u\n", packet_type,
-// (unsigned) stream_type, rn->loaded);
- switch (packet_type) {
- uint16_t header_len, payload_len;
-
- case UDP_EOF_PACKET:
- t->error = -E_RECV_EOF;
- return;
- case UDP_BOF_PACKET:
- PARA_INFO_LOG("bof (%zu)\n", packet_size);
- purd->have_header = 1;
- /* fall through */
- case UDP_DATA_PACKET:
- if (!purd->have_header && stream_type == UDP_HEADER_STREAM)
- /* can't use the data, wait for header */
- goto success;
- payload_len = packet_size - UDP_AUDIO_HEADER_LEN;
- if (!payload_len)
- goto success;
- t->error = -E_OVERRUN;
- if (!enough_space(payload_len, rn->loaded))
- return;
- memcpy(rn->buf + rn->loaded, tmpbuf + UDP_AUDIO_HEADER_LEN,
- payload_len);
- rn->loaded += payload_len;
- goto success;
- case UDP_HEADER_PACKET:
- header_len = udp_read_header_len(tmpbuf);
- if (header_len + UDP_AUDIO_HEADER_LEN > packet_size) {
- t->error = -E_INVALID_HEADER;
- return;
- }
-// PARA_DEBUG_LOG("header packet (%zu bytes), header len: %d\n",
-// packet_size, header_len);
- if (!purd->have_header) {
- t->error = -E_OVERRUN;
- if (!enough_space(header_len, rn->loaded))
- return;
- purd->have_header = 1;
- rn->loaded = header_len;
- memcpy(rn->buf, tmpbuf + UDP_AUDIO_HEADER_LEN,
- rn->loaded);
- goto success;
- }
- payload_len = packet_size - UDP_AUDIO_HEADER_LEN - header_len;
- if (!payload_len)
- goto success;
- t->error = -E_OVERRUN;
- if (!enough_space(payload_len, rn->loaded))
- return;
- memcpy(rn->buf + rn->loaded, tmpbuf + UDP_AUDIO_HEADER_LEN +
- header_len, payload_len);
- rn->loaded += payload_len;