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Add support for enabling simulcast in "Plan B" using MediaConstraints.

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BUG=webrtc:9655

Change-Id: Ieb5fe5d97b6d4381608a51593bca5423979d1b9f
Reviewed-on: https://webrtc-review.googlesource.com/95481
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Seth Hampson <shampson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24424}
This commit is contained in:
Jonas Oreland
2018-08-24 10:58:37 +02:00
committed by Commit Bot
parent d65e143801
commit fc1acd2364
5 changed files with 76 additions and 4 deletions
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10
api/mediaconstraintsinterface.cc
View File

@ -146,6 +146,9 @@ const char MediaConstraintsInterface::kCpuOveruseDetection[] =
"googCpuOveruseDetection";
const char MediaConstraintsInterface::kPayloadPadding[] = "googPayloadPadding";
const char MediaConstraintsInterface::kNumSimulcastLayers[] =
"googNumSimulcastLayers";
// Set |value| to the value associated with the first appearance of |key|, or
// return false if |key| is not found.
bool MediaConstraintsInterface::Constraints::FindFirst(
@ -301,6 +304,13 @@ bool CopyConstraintsIntoOfferAnswerOptions(
offer_answer_options->ice_restart = value;
}
int layers;
if (FindConstraint(constraints,
MediaConstraintsInterface::kNumSimulcastLayers,
&layers, &mandatory_constraints_satisfied)) {
offer_answer_options->num_simulcast_layers = layers;
}
return mandatory_constraints_satisfied == constraints->GetMandatory().size();
}