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* Copyright 2004--2007, Google Inc.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "talk/session/phone/codec.h"
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#include "talk/base/stringutils.h"
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static const int kMaxStaticPayloadId = 95;
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bool Codec::Matches(int payload, const std::string& nm) const {
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return (payload <= kMaxStaticPayloadId) ?
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(id == payload) : (_stricmp(name.c_str(), nm.c_str()) == 0);
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bool Codec::Matches(const Codec& codec) const {
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return Matches(codec.id, codec.name);
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bool AudioCodec::Matches(int payload, const std::string& nm) const {
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// Match the codec id/name based on the typical static/dynamic name rules.
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// Matching is case-insensitive.
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return (payload <= kMaxStaticPayloadId) ?
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(id == payload) : (_stricmp(name.c_str(), nm.c_str()) == 0);
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bool AudioCodec::Matches(const AudioCodec& codec) const {
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// If a nonzero clockrate is specified, it must match the actual clockrate.
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// If a nonzero bitrate is specified, it must match the actual bitrate,
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// unless the codec is VBR (0), where we just force the supplied value.
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// The number of channels must match exactly.
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// Preference is ignored.
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// TODO: Treat a zero clockrate as 8000Hz, the RTP default clockrate.
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return Matches(codec.id, codec.name) &&
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((codec.clockrate == 0 /*&& clockrate == 8000*/) ||
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clockrate == codec.clockrate) &&
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(codec.bitrate == 0 || bitrate <= 0 || bitrate == codec.bitrate) &&
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(codec.channels == 0 || channels == codec.channels);
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std::string AudioCodec::ToString() const {
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std::ostringstream os;
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os << "AudioCodec[" << id << ":" << name << ":" << clockrate << ":" << bitrate
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<< ":" << channels << ":" << preference << "]";
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std::string VideoCodec::ToString() const {
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std::ostringstream os;
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os << "VideoCodec[" << id << ":" << name << ":" << width << ":" << height
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<< ":" << framerate << ":" << preference << "]";
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std::string DataCodec::ToString() const {
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std::ostringstream os;
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os << "DataCodec[" << id << ":" << name << "]";
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} // namespace cricket