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Enables/disables simulcast streams by allocating a bitrate of 0 to the spatial layer.

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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}
This commit is contained in:
Seth Hampson
2018-01-12 11:33:12 -08:00
committed by Commit Bot
parent 4aa8ab5d56
commit 18c4261339
18 changed files with 516 additions and 76 deletions
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10
modules/video_coding/video_codec_initializer.cc
View File

@ -192,6 +192,15 @@ VideoCodec VideoCodecInitializer::VideoEncoderConfigToVideoCodec(
video_codec.numberOfSimulcastStreams =
static_cast<unsigned char>(streams.size());
video_codec.minBitrate = streams[0].min_bitrate_bps / 1000;
bool codec_active = false;
for (const VideoStream& stream : streams) {
if (stream.active) {
codec_active = true;
break;
}
}
// Set active for the entire video codec for the non simulcast case.
video_codec.active = codec_active;
if (video_codec.minBitrate < kEncoderMinBitrateKbps)
video_codec.minBitrate = kEncoderMinBitrateKbps;
video_codec.timing_frame_thresholds = {kDefaultTimingFramesDelayMs,
@ -231,6 +240,7 @@ VideoCodec VideoCodecInitializer::VideoEncoderConfigToVideoCodec(
sim_stream->qpMax = streams[i].max_qp;
sim_stream->numberOfTemporalLayers = static_cast<unsigned char>(
streams[i].temporal_layer_thresholds_bps.size() + 1);
sim_stream->active = streams[i].active;
video_codec.width =
std::max(video_codec.width, static_cast<uint16_t>(streams[i].width));