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1 office 1 /**
2 * @file SingleStreamSender.c
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29  
30 #include <misc/debug.h>
31  
32 #include "SingleStreamSender.h"
33  
34 static void output_handler_done (SingleStreamSender *o, int data_len)
35 {
36 DebugObject_Access(&o->d_obj);
37 ASSERT(data_len > 0)
38 ASSERT(data_len <= o->packet_len - o->pos)
39  
40 // update position
41 o->pos += data_len;
42  
43 // if everything was sent, notify user
44 if (o->pos == o->packet_len) {
45 DEBUGERROR(&o->d_err, o->handler(o->user));
46 return;
47 }
48  
49 // send more
50 StreamPassInterface_Sender_Send(o->output, o->packet + o->pos, o->packet_len - o->pos);
51 }
52  
53 void SingleStreamSender_Init (SingleStreamSender *o, uint8_t *packet, int packet_len, StreamPassInterface *output, BPendingGroup *pg, void *user, SingleStreamSender_handler handler)
54 {
55 ASSERT(packet_len > 0)
56 ASSERT(handler)
57  
58 // init arguments
59 o->packet = packet;
60 o->packet_len = packet_len;
61 o->output = output;
62 o->user = user;
63 o->handler = handler;
64  
65 // set position zero
66 o->pos = 0;
67  
68 // init output
69 StreamPassInterface_Sender_Init(o->output, (StreamPassInterface_handler_done)output_handler_done, o);
70  
71 // start sending
72 StreamPassInterface_Sender_Send(o->output, o->packet + o->pos, o->packet_len - o->pos);
73  
74 DebugError_Init(&o->d_err, pg);
75 DebugObject_Init(&o->d_obj);
76 }
77  
78 void SingleStreamSender_Free (SingleStreamSender *o)
79 {
80 DebugObject_Free(&o->d_obj);
81 DebugError_Free(&o->d_err);
82 }