Reland of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.cc

Index: webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.cc
diff --git a/webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.cc b/webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..05806cd2c16ca056ddf108110d195d8ccad5c9de
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.cc
@@ -0,0 +1,115 @@
+/*
+ *  Copyright 2015 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/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.h"
+
+#include "webrtc/base/logging.h"
+#include "webrtc/common_video/h264/profile_level_id.h"
+#include "webrtc/media/base/codec.h"
+#include "webrtc/sdk/objc/Framework/Classes/VideoToolbox/decoder.h"
+#include "webrtc/sdk/objc/Framework/Classes/VideoToolbox/encoder.h"
+#include "webrtc/system_wrappers/include/field_trial.h"
+
+namespace webrtc {
+
+namespace {
+const char kHighProfileExperiment[] = "WebRTC-H264HighProfile";
+
+bool IsHighProfileEnabled() {
+  return field_trial::IsEnabled(kHighProfileExperiment);
+}
+}
+
+// VideoToolboxVideoEncoderFactory
+
+VideoToolboxVideoEncoderFactory::VideoToolboxVideoEncoderFactory() {
+}
+
+VideoToolboxVideoEncoderFactory::~VideoToolboxVideoEncoderFactory() {}
+
+VideoEncoder* VideoToolboxVideoEncoderFactory::CreateVideoEncoder(
+    const cricket::VideoCodec& codec) {
+  if (FindMatchingCodec(supported_codecs_, codec)) {
+    LOG(LS_INFO) << "Creating HW encoder for " << codec.name;
+    return new H264VideoToolboxEncoder(codec);
+  }
+  LOG(LS_INFO) << "No HW encoder found for codec " << codec.name;
+  return nullptr;
+}
+
+void VideoToolboxVideoEncoderFactory::DestroyVideoEncoder(
+    VideoEncoder* encoder) {
+  delete encoder;
+  encoder = nullptr;
+}
+
+const std::vector<cricket::VideoCodec>&
+VideoToolboxVideoEncoderFactory::supported_codecs() const {
+  supported_codecs_.clear();
+
+  // TODO(magjed): Enumerate actual level instead of using hardcoded level 3.1.
+  // Level 3.1 is 1280x720@30fps which is enough for now.
+  const H264::Level level = H264::kLevel3_1;
+
+  if (IsHighProfileEnabled()) {
+    cricket::VideoCodec constrained_high(cricket::kH264CodecName);
+    const H264::ProfileLevelId constrained_high_profile(
+        H264::kProfileConstrainedHigh, level);
+    constrained_high.SetParam(
+        cricket::kH264FmtpProfileLevelId,
+        *H264::ProfileLevelIdToString(constrained_high_profile));
+    constrained_high.SetParam(cricket::kH264FmtpLevelAsymmetryAllowed, "1");
+    constrained_high.SetParam(cricket::kH264FmtpPacketizationMode, "1");
+    supported_codecs_.push_back(constrained_high);
+  }
+
+  cricket::VideoCodec constrained_baseline(cricket::kH264CodecName);
+  const H264::ProfileLevelId constrained_baseline_profile(
+      H264::kProfileConstrainedBaseline, level);
+  constrained_baseline.SetParam(
+      cricket::kH264FmtpProfileLevelId,
+      *H264::ProfileLevelIdToString(constrained_baseline_profile));
+  constrained_baseline.SetParam(cricket::kH264FmtpLevelAsymmetryAllowed, "1");
+  constrained_baseline.SetParam(cricket::kH264FmtpPacketizationMode, "1");
+  supported_codecs_.push_back(constrained_baseline);
+
+  return supported_codecs_;
+}
+
+// VideoToolboxVideoDecoderFactory
+
+VideoToolboxVideoDecoderFactory::VideoToolboxVideoDecoderFactory() {
+  supported_codecs_.push_back(cricket::VideoCodec("H264"));
+}
+
+VideoToolboxVideoDecoderFactory::~VideoToolboxVideoDecoderFactory() {}
+
+VideoDecoder* VideoToolboxVideoDecoderFactory::CreateVideoDecoder(
+    VideoCodecType type) {
+  const rtc::Optional<const char*> codec_name = CodecTypeToPayloadName(type);
+  if (!codec_name) {
+    LOG(LS_ERROR) << "Invalid codec type: " << type;
+    return nullptr;
+  }
+  const cricket::VideoCodec codec(*codec_name);
+  if (FindMatchingCodec(supported_codecs_, codec)) {
+    LOG(LS_INFO) << "Creating HW decoder for " << codec.name;
+    return new H264VideoToolboxDecoder();
+  }
+  LOG(LS_INFO) << "No HW decoder found for codec " << codec.name;
+  return nullptr;
+}
+
+void VideoToolboxVideoDecoderFactory::DestroyVideoDecoder(
+    VideoDecoder* decoder) {
+  delete decoder;
+  decoder = nullptr;
+}
+
+}  // namespace webrtc