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43800f95bf
* Move SimulcastEncoderAdapter out under modules/video_coding * Move SimulcastRateAllocator back out to modules/video_coding/utility * Move TemporalLayers and ScreenshareLayers to modules/video_coding/utility * Move any VP8 specific code - such as temporal layer bitrate budgeting - under codec type dependent conditionals. * Plumb the simulcast index for H264 in the codec specific and RTP format data structures. TBR=sprang@webrtc.org,stefan@webrtc.org,titovartem@webrtc.org Bug: webrtc:5840 Change-Id: I2d3b130622dd7ceec5528f3ab6c46f109e6bafb8 Reviewed-on: https://webrtc-review.googlesource.com/84743 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23715}
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/video_coding/utility/simulcast_utility.h"
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namespace webrtc {
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uint32_t SimulcastUtility::SumStreamMaxBitrate(int streams,
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const VideoCodec& codec) {
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uint32_t bitrate_sum = 0;
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for (int i = 0; i < streams; ++i) {
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bitrate_sum += codec.simulcastStream[i].maxBitrate;
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}
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return bitrate_sum;
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}
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int SimulcastUtility::NumberOfSimulcastStreams(const VideoCodec& codec) {
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int streams =
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codec.numberOfSimulcastStreams < 1 ? 1 : codec.numberOfSimulcastStreams;
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uint32_t simulcast_max_bitrate = SumStreamMaxBitrate(streams, codec);
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if (simulcast_max_bitrate == 0) {
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streams = 1;
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}
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return streams;
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}
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bool SimulcastUtility::ValidSimulcastResolutions(const VideoCodec& codec,
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int num_streams) {
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if (codec.width != codec.simulcastStream[num_streams - 1].width ||
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codec.height != codec.simulcastStream[num_streams - 1].height) {
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return false;
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}
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for (int i = 0; i < num_streams; ++i) {
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if (codec.width * codec.simulcastStream[i].height !=
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codec.height * codec.simulcastStream[i].width) {
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return false;
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}
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}
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for (int i = 1; i < num_streams; ++i) {
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if (codec.simulcastStream[i].width !=
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codec.simulcastStream[i - 1].width * 2) {
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return false;
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}
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}
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return true;
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}
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bool SimulcastUtility::ValidSimulcastTemporalLayers(const VideoCodec& codec,
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int num_streams) {
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for (int i = 0; i < num_streams - 1; ++i) {
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if (codec.simulcastStream[i].numberOfTemporalLayers !=
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codec.simulcastStream[i + 1].numberOfTemporalLayers)
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return false;
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}
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return true;
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}
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} // namespace webrtc
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