G722 implementation of the AudioEncoderFactoryTemplate API

webrtc/api/audio_codecs/g722/audio_encoder_g722.cc

Index: webrtc/api/audio_codecs/g722/audio_encoder_g722.cc
diff --git a/webrtc/api/audio_codecs/g722/audio_encoder_g722.cc b/webrtc/api/audio_codecs/g722/audio_encoder_g722.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7f82b9c04b240d674d1d401cf62be0092bea2fff
--- /dev/null
+++ b/webrtc/api/audio_codecs/g722/audio_encoder_g722.cc
@@ -0,0 +1,48 @@
+/*
+ *  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_encoder_g722.h"
+
+#include <memory>
+#include <vector>
+
+#include "webrtc/base/ptr_util.h"
+#include "webrtc/base/safe_conversions.h"
+#include "webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.h"
+
+namespace webrtc {
+
+rtc::Optional<AudioEncoderG722Config> AudioEncoderG722::SdpToConfig(
+    const SdpAudioFormat& format) {
+  return AudioEncoderG722Impl::SdpToConfig(format);
+}
+
+void AudioEncoderG722::AppendSupportedEncoders(
+    std::vector<AudioCodecSpec>* specs) {
+  const SdpAudioFormat fmt = {"g722", 8000, 1};
+  const AudioCodecInfo info = QueryAudioEncoder(*SdpToConfig(fmt));
+  specs->push_back({fmt, info});
+}
+
+AudioCodecInfo AudioEncoderG722::QueryAudioEncoder(
+    const AudioEncoderG722Config& config) {
+  RTC_DCHECK(config.IsOk());
+  return {16000, rtc::dchecked_cast<size_t>(config.num_channels),
+          64000 * config.num_channels};
+}
+
+std::unique_ptr<AudioEncoder> AudioEncoderG722::MakeAudioEncoder(
+    const AudioEncoderG722Config& config,
+    int payload_type) {
+  RTC_DCHECK(config.IsOk());
+  return rtc::MakeUnique<AudioEncoderG722Impl>(config, payload_type);
+}
+
+}  // namespace webrtc