/*
* read from media stream. (real rdp packet)
*
* fill 'buffer' with data, and buffer size is 'max_size'.
* receive one chunk from netsock->sock, and fills 'max_size' bytes to buffer.
* and if there are more bytes in the chunk, the data is stored to
* stream->netsock->buffer.
*
* return value: positive value ... bytes written to buffer.
* 0 ... END OF STREAM
* -1 ... ERROR
*/
int real_rdt_get_media_packet(struct stream_t *stream,
uint8_t *buffer,size_t max_size)
{
int ret = 0;
uint8_t header[8];
ret = read_data(stream,header,8);
if(ret < 0) {
goto failed;
}
while(!strncmp((char *)header,"SET_",4) ||
!strncmp((char *)header,"GET_",4) ||
!strncmp((char *)header,"OPTI",4) ||
!strncmp((char *)header,"RTSP",4) ||
!strncmp((char *)header,"ANNO",4)) {
stream_data_push_back(stream,header,8); /* push back header */
ret = real_process_header(stream);
if(ret < 0) {
goto failed;
}
ret = read_data(stream,header,8);
if(ret < 8) {
goto failed;
}
}
ret = real_process_media_packet(stream,header,buffer,max_size);
return ret;
failed:
return -1;
}
/*
* receive rtsp message from stream->sock.
* header is guraranteed to be complete after this function,
* body should not be complete.
* get header only, have to get body later after this function.
* return status code : success
* -1 : failure
*/
static int rtsp_recv_header_get(struct stream_t *stream, struct rtsp_header_t *rtsp_hdr)
{
int ret = 0,i = 0,total = 0;
rtsp_hdr->buffer_len = 0;
rtsp_hdr->buffer = NULL;
total = 0;
do { /* get rtsp reply */
rtsp_hdr->buffer_len += BUFSIZE_1K;
rtsp_hdr->buffer = (char *)xrealloc(rtsp_hdr->buffer,
rtsp_hdr->buffer_len + 1);
i = recv_data(stream,rtsp_hdr->buffer + total,BUFSIZE_1K);
if(i <= 0) {
display(MSDL_ERR,"rtsp_recv_header error: recv_data() returned %d\n",i);
goto failed;
}
total += i;
rtsp_hdr->buffer[total] = '\0'; /* for rtsp_is_entire_header */
} while(!rtsp_is_entire_header(rtsp_hdr));
/* rtsp_hdr->buffer_size is length in buffer, not the malloc()ed size. */
rtsp_hdr->buffer_len = total;
rtsp_hdr->buffer[total] = '\0';
ret = rtsp_response_parse(rtsp_hdr);
if(ret < 0) {
display(MSDL_ERR,"response RTSP header parse failed\n");
goto failed;
}
/* push body back !!! */
if(rtsp_hdr->body_len) {
stream_data_push_back(stream,rtsp_hdr->body,rtsp_hdr->body_len);
}
/* rtsp_hdr->buffer *ONLY* contains header, no body follows */
memset(rtsp_hdr->body,0,rtsp_hdr->body_len);
/* dbg */
display(MSDL_DBG,"rtsp header===========\n"
"%s\n"
"==(%d bytes)====================\n",
rtsp_hdr->buffer,strlen(rtsp_hdr->buffer));
/* success */
return rtsp_hdr->status_code;
failed:
if(rtsp_hdr->buffer) free(rtsp_hdr->buffer);
rtsp_hdr->buffer = NULL;
return -1;
}