blob: 931a89b9dae540c347b35e7c237719fc62dfe86b [file] [log] [blame]
/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "test/layer_filtering_transport.h"
#include <string.h>
#include <algorithm>
#include <memory>
#include <utility>
#include "api/rtp_headers.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/rtp_rtcp/source/create_video_rtp_depacketizer.h"
#include "modules/rtp_rtcp/source/rtp_video_header.h"
#include "modules/rtp_rtcp/source/video_rtp_depacketizer.h"
#include "modules/video_coding/codecs/interface/common_constants.h"
#include "modules/video_coding/codecs/vp8/include/vp8_globals.h"
#include "modules/video_coding/codecs/vp9/include/vp9_globals.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace test {
LayerFilteringTransport::LayerFilteringTransport(
TaskQueueBase* task_queue,
std::unique_ptr<SimulatedPacketReceiverInterface> pipe,
Call* send_call,
uint8_t vp8_video_payload_type,
uint8_t vp9_video_payload_type,
int selected_tl,
int selected_sl,
const std::map<uint8_t, MediaType>& payload_type_map,
uint32_t ssrc_to_filter_min,
uint32_t ssrc_to_filter_max,
rtc::ArrayView<const RtpExtension> audio_extensions,
rtc::ArrayView<const RtpExtension> video_extensions)
: DirectTransport(task_queue,
std::move(pipe),
send_call,
payload_type_map,
audio_extensions,
video_extensions),
vp8_video_payload_type_(vp8_video_payload_type),
vp9_video_payload_type_(vp9_video_payload_type),
vp8_depacketizer_(CreateVideoRtpDepacketizer(kVideoCodecVP8)),
vp9_depacketizer_(CreateVideoRtpDepacketizer(kVideoCodecVP9)),
selected_tl_(selected_tl),
selected_sl_(selected_sl),
discarded_last_packet_(false),
ssrc_to_filter_min_(ssrc_to_filter_min),
ssrc_to_filter_max_(ssrc_to_filter_max) {}
LayerFilteringTransport::LayerFilteringTransport(
TaskQueueBase* task_queue,
std::unique_ptr<SimulatedPacketReceiverInterface> pipe,
Call* send_call,
uint8_t vp8_video_payload_type,
uint8_t vp9_video_payload_type,
int selected_tl,
int selected_sl,
const std::map<uint8_t, MediaType>& payload_type_map,
rtc::ArrayView<const RtpExtension> audio_extensions,
rtc::ArrayView<const RtpExtension> video_extensions)
: LayerFilteringTransport(task_queue,
std::move(pipe),
send_call,
vp8_video_payload_type,
vp9_video_payload_type,
selected_tl,
selected_sl,
payload_type_map,
/*ssrc_to_filter_min=*/0,
/*ssrc_to_filter_max=*/0xFFFFFFFF,
audio_extensions,
video_extensions) {}
bool LayerFilteringTransport::DiscardedLastPacket() const {
return discarded_last_packet_;
}
bool LayerFilteringTransport::SendRtp(rtc::ArrayView<const uint8_t> packet,
const PacketOptions& options) {
if (selected_tl_ == -1 && selected_sl_ == -1) {
// Nothing to change, forward the packet immediately.
return test::DirectTransport::SendRtp(packet, options);
}
RtpPacket rtp_packet;
rtp_packet.Parse(packet);
if (rtp_packet.Ssrc() < ssrc_to_filter_min_ ||
rtp_packet.Ssrc() > ssrc_to_filter_max_) {
// Nothing to change, forward the packet immediately.
return test::DirectTransport::SendRtp(packet, options);
}
if (rtp_packet.PayloadType() == vp8_video_payload_type_ ||
rtp_packet.PayloadType() == vp9_video_payload_type_) {
const bool is_vp8 = rtp_packet.PayloadType() == vp8_video_payload_type_;
VideoRtpDepacketizer& depacketizer =
is_vp8 ? *vp8_depacketizer_ : *vp9_depacketizer_;
if (auto parsed_payload = depacketizer.Parse(rtp_packet.PayloadBuffer())) {
int temporal_idx;
int spatial_idx;
bool non_ref_for_inter_layer_pred;
bool end_of_frame;
if (is_vp8) {
temporal_idx = absl::get<RTPVideoHeaderVP8>(
parsed_payload->video_header.video_type_header)
.temporalIdx;
spatial_idx = kNoSpatialIdx;
num_active_spatial_layers_ = 1;
non_ref_for_inter_layer_pred = false;
end_of_frame = true;
} else {
const auto& vp9_header = absl::get<RTPVideoHeaderVP9>(
parsed_payload->video_header.video_type_header);
temporal_idx = vp9_header.temporal_idx;
spatial_idx = vp9_header.spatial_idx;
non_ref_for_inter_layer_pred = vp9_header.non_ref_for_inter_layer_pred;
end_of_frame = vp9_header.end_of_frame;
if (vp9_header.ss_data_available) {
RTC_DCHECK(vp9_header.temporal_idx == kNoTemporalIdx ||
vp9_header.temporal_idx == 0);
num_active_spatial_layers_ = vp9_header.num_spatial_layers;
}
}
if (spatial_idx == kNoSpatialIdx)
num_active_spatial_layers_ = 1;
RTC_CHECK_GT(num_active_spatial_layers_, 0);
if (selected_sl_ >= 0 &&
spatial_idx ==
std::min(num_active_spatial_layers_ - 1, selected_sl_) &&
end_of_frame) {
// This layer is now the last in the superframe.
rtp_packet.SetMarker(true);
} else {
const bool higher_temporal_layer =
(selected_tl_ >= 0 && temporal_idx != kNoTemporalIdx &&
temporal_idx > selected_tl_);
const bool higher_spatial_layer =
(selected_sl_ >= 0 && spatial_idx != kNoSpatialIdx &&
spatial_idx > selected_sl_);
// Filter out non-reference lower spatial layers since they are not
// needed for decoding of target spatial layer.
const bool lower_non_ref_spatial_layer =
(selected_sl_ >= 0 && spatial_idx != kNoSpatialIdx &&
spatial_idx <
std::min(num_active_spatial_layers_ - 1, selected_sl_) &&
non_ref_for_inter_layer_pred);
if (higher_temporal_layer || higher_spatial_layer ||
lower_non_ref_spatial_layer) {
// Truncate packet to a padding packet.
rtp_packet.SetPayloadSize(0);
rtp_packet.SetPadding(1);
rtp_packet.SetMarker(false);
discarded_last_packet_ = true;
}
}
} else {
RTC_DCHECK_NOTREACHED() << "Parse error";
}
}
return test::DirectTransport::SendRtp(rtp_packet, options);
}
} // namespace test
} // namespace webrtc