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Don't pad if only one stream is sent, except if auto muted.

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BUG=
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2406004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4975 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
stefan@webrtc.org 2013-10-16 13:03:10 +00:00
parent e7009f3b0d
commit b400aa7cd4
1 changed files with 24 additions and 13 deletions
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37
webrtc/video_engine/vie_encoder.cc
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@ -1051,22 +1051,33 @@ void ViEEncoder::OnNetworkChanged(const uint32_t bitrate_bps,
// point, based on which streams are currently active and what our current
// available bandwidth is.
int max_padding_bitrate_kbps = 0;
int i = send_codec.numberOfSimulcastStreams - 1;
for (std::vector<uint32_t>::reverse_iterator it = stream_bitrates.rbegin();
it != stream_bitrates.rend(); ++it) {
if (*it > 0) {
max_padding_bitrate_kbps = std::min((*it + 500) / 1000,
stream_configs[i].minBitrate);
break;
int pad_up_to_bitrate_kbps = 0;
if (send_codec.numberOfSimulcastStreams == 0) {
max_padding_bitrate_kbps = send_codec.minBitrate;
pad_up_to_bitrate_kbps = send_codec.minBitrate;
} else {
int i = send_codec.numberOfSimulcastStreams - 1;
for (std::vector<uint32_t>::reverse_iterator it = stream_bitrates.rbegin();
it != stream_bitrates.rend(); ++it) {
if (*it > 0) {
max_padding_bitrate_kbps = std::min((*it + 500) / 1000,
stream_configs[i].minBitrate);
break;
}
--i;
}
pad_up_to_bitrate_kbps =
stream_configs[send_codec.numberOfSimulcastStreams - 1].minBitrate;
for (int i = 0; i < send_codec.numberOfSimulcastStreams - 1; ++i) {
pad_up_to_bitrate_kbps += stream_configs[i].targetBitrate;
}
--i;
}
int pad_up_to_bitrate_kbps =
stream_configs[send_codec.numberOfSimulcastStreams - 1].minBitrate;
for (int i = 0; i < send_codec.numberOfSimulcastStreams - 1; ++i) {
pad_up_to_bitrate_kbps += stream_configs[i].targetBitrate;
if (video_is_muted || send_codec.numberOfSimulcastStreams > 1) {
pad_up_to_bitrate_kbps = std::min(bitrate_kbps, pad_up_to_bitrate_kbps);
} else {
// Disable padding if only sending one stream and video isn't muted.
pad_up_to_bitrate_kbps = 0;
}
pad_up_to_bitrate_kbps = std::min(bitrate_kbps, pad_up_to_bitrate_kbps);
paced_sender_->UpdateBitrate(bitrate_kbps,
max_padding_bitrate_kbps,
pad_up_to_bitrate_kbps);