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46e31ba5b5
This is a reland of 18c4261339
Original change's description:
> Enables/disables simulcast streams by allocating a bitrate of 0 to the spatial layer.
>
> Creates VideoStreams & VideoCodec.simulcastStreams with an active field, and then allocates 0 bitrate to simulcast streams that are inactive. This turns off the encoder for specific simulcast streams.
>
> Bug: webrtc:8653
> Change-Id: Id93b03dcd8d1191a7d3300bd77882c8af96ee469
> Reviewed-on: https://webrtc-review.googlesource.com/37740
> Reviewed-by: Stefan Holmer <stefan@webrtc.org>
> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
> Reviewed-by: Erik Språng <sprang@webrtc.org>
> Commit-Queue: Seth Hampson <shampson@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21646}
TBR=sprang@webrtc.org,stefan@webrtc.org,deadbeef@webrtc.org
Bug: webrtc:8630
Change-Id: Ib3df6f9b7158bff362a7ec66fc57e368682c5846
Reviewed-on: https://webrtc-review.googlesource.com/40980
Reviewed-by: Seth Hampson <shampson@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Seth Hampson <shampson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21688}
46 lines
1.5 KiB
C++
46 lines
1.5 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 <stdint.h>
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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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BitrateAllocation DefaultVideoBitrateAllocator::GetAllocation(
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uint32_t total_bitrate_bps,
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uint32_t framerate) {
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BitrateAllocation allocation;
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if (total_bitrate_bps == 0 || !codec_.active)
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return allocation;
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if (total_bitrate_bps < codec_.minBitrate * 1000) {
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allocation.SetBitrate(0, 0, codec_.minBitrate * 1000);
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} else if (codec_.maxBitrate > 0 &&
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total_bitrate_bps > codec_.maxBitrate * 1000) {
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allocation.SetBitrate(0, 0, codec_.maxBitrate * 1000);
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} else {
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allocation.SetBitrate(0, 0, total_bitrate_bps);
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}
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return allocation;
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}
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uint32_t DefaultVideoBitrateAllocator::GetPreferredBitrateBps(
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uint32_t framerate) {
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return GetAllocation(codec_.maxBitrate * 1000, framerate).get_sum_bps();
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}
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} // namespace webrtc
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