1 /*
2 * libjingle
3 * Copyright 2004--2007, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/session/phone/codec.h"
29 #include <sstream>
30
31 namespace cricket {
32
33 static const int kMaxStaticPayloadId = 95;
34
Matches(int payload,const std::string & nm) const35 bool AudioCodec::Matches(int payload, const std::string& nm) const {
36 // Match the codec id/name based on the typical static/dynamic name rules.
37 return (payload <= kMaxStaticPayloadId) ? (id == payload) : (name == nm);
38 }
39
Matches(const AudioCodec & codec) const40 bool AudioCodec::Matches(const AudioCodec& codec) const {
41 // If a nonzero clockrate is specified, it must match the actual clockrate.
42 // If a nonzero bitrate is specified, it must match the actual bitrate,
43 // unless the codec is VBR (-1), where we just force the supplied value.
44 // The number of channels must match exactly.
45 // Preference is ignored.
46 // TODO: Treat a zero clockrate as 8000Hz, the RTP default clockrate.
47 return Matches(codec.id, codec.name) &&
48 ((codec.clockrate == 0 /*&& clockrate == 8000*/) ||
49 clockrate == codec.clockrate) &&
50 (codec.bitrate == 0 || bitrate == -1 || bitrate == codec.bitrate) &&
51 (codec.channels == 0 || channels == codec.channels);
52 }
53
ToString() const54 std::string AudioCodec::ToString() const {
55 std::ostringstream os;
56 os << "AudioCodec[" << id << ":" << name << ":" << clockrate << ":" << bitrate
57 << ":" << channels << ":" << preference << "]";
58 return os.str();
59 }
60
Matches(int payload,const std::string & nm) const61 bool VideoCodec::Matches(int payload, const std::string& nm) const {
62 // Match the codec id/name based on the typical static/dynamic name rules.
63 return (payload <= kMaxStaticPayloadId) ? (id == payload) : (name == nm);
64 }
65
Matches(const VideoCodec & codec) const66 bool VideoCodec::Matches(const VideoCodec& codec) const {
67 // Only the id and name are matched.
68 return Matches(codec.id, codec.name);
69 }
70
ToString() const71 std::string VideoCodec::ToString() const {
72 std::ostringstream os;
73 os << "VideoCodec[" << id << ":" << name << ":" << width << ":" << height
74 << ":" << framerate << ":" << preference << "]";
75 return os.str();
76 }
77
78 } // namespace cricket
79