Reland of Move video_encoder.h and video_decoder.h to /api and create GN targets for them (patchset #1 id:1 of https://codereview.webrtc.org/2794033002/ )
Reason for revert:
Reland with temporary deprecated API to not break chromium and google3.
Original issue's description:
> Revert of Move video_encoder.h and video_decoder.h to /api and create GN targets for them (patchset #8 id:140001 of https://codereview.webrtc.org/2780943003/ )
>
> Reason for revert:
> Suspect of breaking Chrome FYI bots.
>
> See
> https://build.chromium.org/p/chromium.webrtc.fyi/builders/Mac%20Builder/builds/23065
> https://build.chromium.org/p/chromium.webrtc.fyi/builders/Android%20Builder
>
> Example logs:
> ../../content/renderer/media/gpu/rtc_video_encoder_unittest.cc:18:46: fatal error: third_party/webrtc/video_encoder.h: No such file or directory
> #include "third_party/webrtc/video_encoder.h"
> ^
>
> Original issue's description:
> > Move video_encoder.h and video_decoder.h to /api and create GN targets for them
> >
> > BUG=webrtc:5881
> > # Because PRESUBMIT ignores LINT blacklist for moved files and these
> > # headers have some not easy to resolve issues.
> > NOPRESUBMIT=True
> >
> > Review-Url: https://codereview.webrtc.org/2780943003
> > Cr-Commit-Position: refs/heads/master@{#17511}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/c42f54057050c933008a49d57582577bfb9aed25
>
> TBR=solenberg@webrtc.org,sprang@webrtc.org,ilnik@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:5881
>
> Review-Url: https://codereview.webrtc.org/2794033002
> Cr-Commit-Position: refs/heads/master@{#17514}
> Committed: https://chromium.googlesource.com/external/webrtc/+/716d7ac5c1ed6e392e264b34065800bbf03772b3
TBR=solenberg@webrtc.org,sprang@webrtc.org,guidou@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5881
Review-Url: https://codereview.webrtc.org/2795163002
Cr-Original-Commit-Position: refs/heads/master@{#17537}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: d60d06a9f971a36c9a51ff9919850cffb993893c
diff --git a/api/video_codecs/video_encoder.h b/api/video_codecs/video_encoder.h
new file mode 100644
index 0000000..969de43
--- /dev/null
+++ b/api/video_codecs/video_encoder.h
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2014 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_API_VIDEO_CODECS_VIDEO_ENCODER_H_
+#define WEBRTC_API_VIDEO_CODECS_VIDEO_ENCODER_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "webrtc/base/checks.h"
+#include "webrtc/common_types.h"
+#include "webrtc/typedefs.h"
+#include "webrtc/video_frame.h"
+#include "webrtc/base/optional.h"
+
+namespace webrtc {
+
+class RTPFragmentationHeader;
+// TODO(pbos): Expose these through a public (root) header or change these APIs.
+struct CodecSpecificInfo;
+class VideoCodec;
+
+class EncodedImageCallback {
+ public:
+ virtual ~EncodedImageCallback() {}
+
+ struct Result {
+ enum Error {
+ OK,
+
+ // Failed to send the packet.
+ ERROR_SEND_FAILED,
+ };
+
+ Result(Error error) : error(error) {}
+ Result(Error error, uint32_t frame_id) : error(error), frame_id(frame_id) {}
+
+ Error error;
+
+ // Frame ID assigned to the frame. The frame ID should be the same as the ID
+ // seen by the receiver for this frame. RTP timestamp of the frame is used
+ // as frame ID when RTP is used to send video. Must be used only when
+ // error=OK.
+ uint32_t frame_id = 0;
+
+ // Tells the encoder that the next frame is should be dropped.
+ bool drop_next_frame = false;
+ };
+
+ // Callback function which is called when an image has been encoded.
+ virtual Result OnEncodedImage(
+ const EncodedImage& encoded_image,
+ const CodecSpecificInfo* codec_specific_info,
+ const RTPFragmentationHeader* fragmentation) = 0;
+
+ virtual void OnDroppedFrame() {}
+};
+
+class VideoEncoder {
+ public:
+ enum EncoderType {
+ kH264,
+ kVp8,
+ kVp9,
+ kUnsupportedCodec,
+ };
+ struct QpThresholds {
+ QpThresholds(int l, int h) : low(l), high(h) {}
+ QpThresholds() : low(-1), high(-1) {}
+ int low;
+ int high;
+ };
+ struct ScalingSettings {
+ ScalingSettings(bool on, int low, int high)
+ : enabled(on),
+ thresholds(rtc::Optional<QpThresholds>(QpThresholds(low, high))) {}
+ explicit ScalingSettings(bool on) : enabled(on) {}
+ const bool enabled;
+ const rtc::Optional<QpThresholds> thresholds;
+ };
+ static VideoEncoder* Create(EncoderType codec_type);
+ // Returns true if this type of encoder can be created using
+ // VideoEncoder::Create.
+ static bool IsSupportedSoftware(EncoderType codec_type);
+ static EncoderType CodecToEncoderType(VideoCodecType codec_type);
+
+ static VideoCodecVP8 GetDefaultVp8Settings();
+ static VideoCodecVP9 GetDefaultVp9Settings();
+ static VideoCodecH264 GetDefaultH264Settings();
+
+ virtual ~VideoEncoder() {}
+
+ // Initialize the encoder with the information from the codecSettings
+ //
+ // Input:
+ // - codec_settings : Codec settings
+ // - number_of_cores : Number of cores available for the encoder
+ // - max_payload_size : The maximum size each payload is allowed
+ // to have. Usually MTU - overhead.
+ //
+ // Return value : Set bit rate if OK
+ // <0 - Errors:
+ // WEBRTC_VIDEO_CODEC_ERR_PARAMETER
+ // WEBRTC_VIDEO_CODEC_ERR_SIZE
+ // WEBRTC_VIDEO_CODEC_LEVEL_EXCEEDED
+ // WEBRTC_VIDEO_CODEC_MEMORY
+ // WEBRTC_VIDEO_CODEC_ERROR
+ virtual int32_t InitEncode(const VideoCodec* codec_settings,
+ int32_t number_of_cores,
+ size_t max_payload_size) = 0;
+
+ // Register an encode complete callback object.
+ //
+ // Input:
+ // - callback : Callback object which handles encoded images.
+ //
+ // Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
+ virtual int32_t RegisterEncodeCompleteCallback(
+ EncodedImageCallback* callback) = 0;
+
+ // Free encoder memory.
+ // Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
+ virtual int32_t Release() = 0;
+
+ // Encode an I420 image (as a part of a video stream). The encoded image
+ // will be returned to the user through the encode complete callback.
+ //
+ // Input:
+ // - frame : Image to be encoded
+ // - frame_types : Frame type to be generated by the encoder.
+ //
+ // Return value : WEBRTC_VIDEO_CODEC_OK if OK
+ // <0 - Errors:
+ // WEBRTC_VIDEO_CODEC_ERR_PARAMETER
+ // WEBRTC_VIDEO_CODEC_MEMORY
+ // WEBRTC_VIDEO_CODEC_ERROR
+ // WEBRTC_VIDEO_CODEC_TIMEOUT
+ virtual int32_t Encode(const VideoFrame& frame,
+ const CodecSpecificInfo* codec_specific_info,
+ const std::vector<FrameType>* frame_types) = 0;
+
+ // Inform the encoder of the new packet loss rate and the round-trip time of
+ // the network.
+ //
+ // Input:
+ // - packet_loss : Fraction lost
+ // (loss rate in percent = 100 * packetLoss / 255)
+ // - rtt : Round-trip time in milliseconds
+ // Return value : WEBRTC_VIDEO_CODEC_OK if OK
+ // <0 - Errors: WEBRTC_VIDEO_CODEC_ERROR
+ virtual int32_t SetChannelParameters(uint32_t packet_loss, int64_t rtt) = 0;
+
+ // Inform the encoder about the new target bit rate.
+ //
+ // Input:
+ // - bitrate : New target bit rate
+ // - framerate : The target frame rate
+ //
+ // Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
+ virtual int32_t SetRates(uint32_t bitrate, uint32_t framerate) {
+ RTC_NOTREACHED() << "SetRate(uint32_t, uint32_t) is deprecated.";
+ return -1;
+ }
+
+ // Default fallback: Just use the sum of bitrates as the single target rate.
+ // TODO(sprang): Remove this default implementation when we remove SetRates().
+ virtual int32_t SetRateAllocation(const BitrateAllocation& allocation,
+ uint32_t framerate) {
+ return SetRates(allocation.get_sum_kbps(), framerate);
+ }
+
+ // Any encoder implementation wishing to use the WebRTC provided
+ // quality scaler must implement this method.
+ virtual ScalingSettings GetScalingSettings() const {
+ return ScalingSettings(false);
+ }
+
+ virtual int32_t SetPeriodicKeyFrames(bool enable) { return -1; }
+ virtual bool SupportsNativeHandle() const { return false; }
+ virtual const char* ImplementationName() const { return "unknown"; }
+};
+
+} // namespace webrtc
+#endif // WEBRTC_API_VIDEO_CODECS_VIDEO_ENCODER_H_
