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Unified Diff: webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h

Issue 2890513002: Revert of Split iOS sdk in to separate targets (Closed)
Patch Set: Created 3 years, 7 months ago
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Index: webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h
diff --git a/webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h b/webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h
new file mode 100644
index 0000000000000000000000000000000000000000..09aa7db9aea58785ff2e431141539d23310476ee
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 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.
+ *
+ */
+
+#ifndef WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_ENCODER_H_
+#define WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_ENCODER_H_
+
+#include "webrtc/api/video/video_rotation.h"
+#include "webrtc/base/criticalsection.h"
+#include "webrtc/common_video/h264/h264_bitstream_parser.h"
+#include "webrtc/common_video/include/bitrate_adjuster.h"
+#include "webrtc/media/base/codec.h"
+#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
+#include "webrtc/modules/video_coding/utility/quality_scaler.h"
+
+#include <VideoToolbox/VideoToolbox.h>
+#include <vector>
+
+// This file provides a H264 encoder implementation using the VideoToolbox
+// APIs. Since documentation is almost non-existent, this is largely based on
+// the information in the VideoToolbox header files, a talk from WWDC 2014 and
+// experimentation.
+
+namespace webrtc {
+
+class H264VideoToolboxEncoder : public H264Encoder {
+ public:
+ explicit H264VideoToolboxEncoder(const cricket::VideoCodec& codec);
+
+ ~H264VideoToolboxEncoder() override;
+
+ int InitEncode(const VideoCodec* codec_settings,
+ int number_of_cores,
+ size_t max_payload_size) override;
+
+ int Encode(const VideoFrame& input_image,
+ const CodecSpecificInfo* codec_specific_info,
+ const std::vector<FrameType>* frame_types) override;
+
+ int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
+
+ int SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
+
+ int SetRates(uint32_t new_bitrate_kbit, uint32_t frame_rate) override;
+
+ int Release() override;
+
+ const char* ImplementationName() const override;
+
+ bool SupportsNativeHandle() const override;
+
+ void OnEncodedFrame(OSStatus status,
+ VTEncodeInfoFlags info_flags,
+ CMSampleBufferRef sample_buffer,
+ CodecSpecificInfo codec_specific_info,
+ int32_t width,
+ int32_t height,
+ int64_t render_time_ms,
+ uint32_t timestamp,
+ VideoRotation rotation);
+
+ ScalingSettings GetScalingSettings() const override;
+
+ private:
+ int ResetCompressionSession();
+ void ConfigureCompressionSession();
+ void DestroyCompressionSession();
+ rtc::scoped_refptr<VideoFrameBuffer> GetScaledBufferOnEncode(
+ const rtc::scoped_refptr<VideoFrameBuffer>& frame);
+ void SetBitrateBps(uint32_t bitrate_bps);
+ void SetEncoderBitrateBps(uint32_t bitrate_bps);
+
+ EncodedImageCallback* callback_;
+ VTCompressionSessionRef compression_session_;
+ BitrateAdjuster bitrate_adjuster_;
+ H264PacketizationMode packetization_mode_;
+ uint32_t target_bitrate_bps_;
+ uint32_t encoder_bitrate_bps_;
+ int32_t width_;
+ int32_t height_;
+ VideoCodecMode mode_;
+ const CFStringRef profile_;
+
+ H264BitstreamParser h264_bitstream_parser_;
+ std::vector<uint8_t> nv12_scale_buffer_;
+}; // H264VideoToolboxEncoder
+
+} // namespace webrtc
+
+#endif // WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_ENCODER_H_

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