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3e70781361
This is a follow-up to https://webrtc-review.googlesource.com/c/src/+/106280. This time the whole code base is covered. Some files may have not been fixed though, whenever the IWYU tool was breaking the build. Bug: webrtc:8311 Change-Id: I2c31f552a87e887d33931d46e87b6208b1e483ef Reviewed-on: https://webrtc-review.googlesource.com/c/111965 Commit-Queue: Yves Gerey <yvesg@google.com> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25830}
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
/*
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* Copyright (c) 2016 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/default_video_bitrate_allocator.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <algorithm>
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namespace webrtc {
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DefaultVideoBitrateAllocator::DefaultVideoBitrateAllocator(
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const VideoCodec& codec)
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: codec_(codec) {}
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DefaultVideoBitrateAllocator::~DefaultVideoBitrateAllocator() {}
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// TODO(http://crbug.com/webrtc/9671): Do not split bitrate between simulcast
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// streams, but allocate everything to the first stream.
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VideoBitrateAllocation DefaultVideoBitrateAllocator::GetAllocation(
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uint32_t total_bitrate_bps,
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uint32_t framerate) {
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VideoBitrateAllocation allocation;
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if (total_bitrate_bps == 0 || !codec_.active)
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return allocation;
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uint32_t allocated_bitrate_bps = total_bitrate_bps;
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allocated_bitrate_bps =
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std::max(allocated_bitrate_bps, codec_.minBitrate * 1000);
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if (codec_.maxBitrate > 0) {
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allocated_bitrate_bps =
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std::min(allocated_bitrate_bps, codec_.maxBitrate * 1000);
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}
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size_t num_simulcast_streams =
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std::max<size_t>(1, codec_.numberOfSimulcastStreams);
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// The bitrate is split between all the streams in proportion of powers of 2
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// e.g. 1:2, 1:2:4, etc.
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for (size_t i = 0; i < num_simulcast_streams; i++) {
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allocation.SetBitrate(
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i, 0,
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allocated_bitrate_bps * (1 << i) / ((1 << num_simulcast_streams) - 1));
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}
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return allocation;
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}
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} // namespace webrtc
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