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VP9 GoF/temporal index check.

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Bug: webrtc:8960
Change-Id: Ia0de8659903a64932861061af569f3fc1222fd23
Reviewed-on: https://webrtc-review.googlesource.com/59180
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22264}
This commit is contained in:
philipel
2018-03-02 10:55:12 +01:00
committed by Commit Bot
parent 36482cdd10
commit 459f4e38b2
2 changed files with 31 additions and 4 deletions
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25
modules/video_coding/rtp_frame_reference_finder.cc
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@ -554,6 +554,7 @@ bool RtpFrameReferenceFinder::MissingRequiredFrameVp9(uint16_t picture_id,
void RtpFrameReferenceFinder::FrameReceivedVp9(uint16_t picture_id,
GofInfo* info) {
int last_picture_id = info->last_picture_id;
size_t gof_size = std::min(info->gof->num_frames_in_gof, kMaxVp9FramesInGof);
// If there is a gap, find which temporal layer the missing frames
// belong to and add the frame as missing for that temporal layer.
@ -561,22 +562,38 @@ void RtpFrameReferenceFinder::FrameReceivedVp9(uint16_t picture_id,
if (AheadOf<uint16_t, kPicIdLength>(picture_id, last_picture_id)) {
size_t diff = ForwardDiff<uint16_t, kPicIdLength>(info->gof->pid_start,
last_picture_id);
size_t gof_idx = diff % info->gof->num_frames_in_gof;
size_t gof_idx = diff % gof_size;
last_picture_id = Add<kPicIdLength>(last_picture_id, 1);
while (last_picture_id != picture_id) {
++gof_idx;
RTC_DCHECK_NE(0ul, gof_idx % info->gof->num_frames_in_gof);
gof_idx = (gof_idx + 1) % gof_size;
RTC_CHECK(gof_idx < kMaxVp9FramesInGof);
size_t temporal_idx = info->gof->temporal_idx[gof_idx];
if (temporal_idx >= kMaxTemporalLayers) {
RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers << " temporal "
<< "layers are supported.";
return;
}
missing_frames_for_layer_[temporal_idx].insert(last_picture_id);
last_picture_id = Add<kPicIdLength>(last_picture_id, 1);
}
info->last_picture_id = last_picture_id;
} else {
size_t diff =
ForwardDiff<uint16_t, kPicIdLength>(info->gof->pid_start, picture_id);
size_t gof_idx = diff % info->gof->num_frames_in_gof;
size_t gof_idx = diff % gof_size;
RTC_CHECK(gof_idx < kMaxVp9FramesInGof);
size_t temporal_idx = info->gof->temporal_idx[gof_idx];
if (temporal_idx >= kMaxTemporalLayers) {
RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers << " temporal "
<< "layers are supported.";
return;
}
missing_frames_for_layer_[temporal_idx].erase(picture_id);
}
}