G722 implementation of the AudioDecoderFactoryTemplate API

webrtc/api/audio_codecs/g722/audio_decoder_g722.cc

Index: webrtc/api/audio_codecs/g722/audio_decoder_g722.cc
diff --git a/webrtc/api/audio_codecs/g722/audio_decoder_g722.cc b/webrtc/api/audio_codecs/g722/audio_decoder_g722.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e4cb1b7d69340c28a4ec1ff8ace39c842dd4e744
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+++ b/webrtc/api/audio_codecs/g722/audio_decoder_g722.cc
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/api/audio_codecs/g722/audio_decoder_g722.h"
+
+#include <memory>
+#include <vector>
+
+#include "webrtc/base/ptr_util.h"
+#include "webrtc/base/safe_conversions.h"
+#include "webrtc/common_types.h"
+#include "webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.h"
+
+namespace webrtc {
+
+rtc::Optional<AudioDecoderG722::Config> AudioDecoderG722::SdpToConfig(
+    const SdpAudioFormat& format) {
+  return STR_CASE_CMP(format.name.c_str(), "g722") == 0 &&
+                 format.clockrate_hz == 8000
+             ? rtc::Optional<Config>(Config())
+             : rtc::Optional<Config>();
+}
+
+void AudioDecoderG722::AppendSupportedDecoders(
+    std::vector<AudioCodecSpec>* specs) {
+  specs->push_back({{"g722", 8000, 1}, {16000, 1, 64000}});
+}
+
+std::unique_ptr<AudioDecoder> AudioDecoderG722::MakeAudioDecoder(
+    Config config) {
+  return rtc::MakeUnique<AudioDecoderG722Impl>();
+}
+
+}  // namespace webrtc