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/*
* Copyright (c) 2013 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 <stdio.h>
#include <map>
#include "gflags/gflags.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/call.h"
#include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
#include "webrtc/system_wrappers/interface/clock.h"
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
#include "webrtc/test/direct_transport.h"
#include "webrtc/test/encoder_settings.h"
#include "webrtc/test/fake_encoder.h"
#include "webrtc/test/field_trial.h"
#include "webrtc/test/run_loop.h"
#include "webrtc/test/run_test.h"
#include "webrtc/test/testsupport/trace_to_stderr.h"
#include "webrtc/test/video_capturer.h"
#include "webrtc/test/video_renderer.h"
#include "webrtc/typedefs.h"
namespace webrtc {
static const int kAbsSendTimeExtensionId = 7;
namespace flags {
DEFINE_int32(width, 640, "Video width.");
size_t Width() { return static_cast<size_t>(FLAGS_width); }
DEFINE_int32(height, 480, "Video height.");
size_t Height() { return static_cast<size_t>(FLAGS_height); }
DEFINE_int32(fps, 30, "Frames per second.");
int Fps() { return static_cast<int>(FLAGS_fps); }
DEFINE_int32(min_bitrate, 50, "Minimum video bitrate.");
size_t MinBitrate() { return static_cast<size_t>(FLAGS_min_bitrate); }
DEFINE_int32(start_bitrate, 300, "Video starting bitrate.");
size_t StartBitrate() { return static_cast<size_t>(FLAGS_start_bitrate); }
DEFINE_int32(max_bitrate, 800, "Maximum video bitrate.");
size_t MaxBitrate() { return static_cast<size_t>(FLAGS_max_bitrate); }
DEFINE_string(codec, "VP8", "Video codec to use.");
std::string Codec() { return static_cast<std::string>(FLAGS_codec); }
DEFINE_int32(loss_percent, 0, "Percentage of packets randomly lost.");
int LossPercent() {
return static_cast<int>(FLAGS_loss_percent);
}
DEFINE_int32(link_capacity,
0,
"Capacity (kbps) of the fake link. 0 means infinite.");
int LinkCapacity() {
return static_cast<int>(FLAGS_link_capacity);
}
DEFINE_int32(queue_size, 0, "Size of the bottleneck link queue in packets.");
int QueueSize() {
return static_cast<int>(FLAGS_queue_size);
}
DEFINE_int32(avg_propagation_delay_ms,
0,
"Average link propagation delay in ms.");
int AvgPropagationDelayMs() {
return static_cast<int>(FLAGS_avg_propagation_delay_ms);
}
DEFINE_int32(std_propagation_delay_ms,
0,
"Link propagation delay standard deviation in ms.");
int StdPropagationDelayMs() {
return static_cast<int>(FLAGS_std_propagation_delay_ms);
}
DEFINE_bool(logs, false, "print logs to stderr");
DEFINE_string(
force_fieldtrials,
"",
"Field trials control experimental feature code which can be forced. "
"E.g. running with --force_fieldtrials=WebRTC-FooFeature/Enable/"
" will assign the group Enable to field trial WebRTC-FooFeature. Multiple "
"trials are separated by \"/\"");
} // namespace flags
static const uint32_t kSendSsrc = 0x654321;
static const uint32_t kSendRtxSsrc = 0x654322;
static const uint32_t kReceiverLocalSsrc = 0x123456;
static const uint8_t kRtxPayloadType = 96;
void Loopback() {
scoped_ptr<test::TraceToStderr> trace_to_stderr_;
if (webrtc::flags::FLAGS_logs)
trace_to_stderr_.reset(new test::TraceToStderr);
scoped_ptr<test::VideoRenderer> local_preview(test::VideoRenderer::Create(
"Local Preview", flags::Width(), flags::Height()));
scoped_ptr<test::VideoRenderer> loopback_video(test::VideoRenderer::Create(
"Loopback Video", flags::Width(), flags::Height()));
FakeNetworkPipe::Config pipe_config;
pipe_config.loss_percent = flags::LossPercent();
pipe_config.link_capacity_kbps = flags::LinkCapacity();
pipe_config.queue_length_packets = flags::QueueSize();
pipe_config.queue_delay_ms = flags::AvgPropagationDelayMs();
pipe_config.delay_standard_deviation_ms = flags::StdPropagationDelayMs();
test::DirectTransport transport(pipe_config);
Call::Config call_config(&transport);
call_config.stream_start_bitrate_bps =
static_cast<int>(flags::StartBitrate()) * 1000;
scoped_ptr<Call> call(Call::Create(call_config));
// Loopback, call sends to itself.
transport.SetReceiver(call->Receiver());
VideoSendStream::Config send_config;
send_config.rtp.ssrcs.push_back(kSendSsrc);
send_config.rtp.rtx.ssrcs.push_back(kSendRtxSsrc);
send_config.rtp.rtx.payload_type = kRtxPayloadType;
send_config.rtp.nack.rtp_history_ms = 1000;
send_config.rtp.extensions.push_back(
RtpExtension(RtpExtension::kAbsSendTime, kAbsSendTimeExtensionId));
send_config.local_renderer = local_preview.get();
scoped_ptr<VideoEncoder> encoder;
if (flags::Codec() == "VP8") {
encoder.reset(VideoEncoder::Create(VideoEncoder::kVp8));
} else {
// Codec not supported.
assert(false && "Codec not supported!");
return;
}
send_config.encoder_settings.encoder = encoder.get();
send_config.encoder_settings.payload_name = flags::Codec();
send_config.encoder_settings.payload_type = 124;
VideoEncoderConfig encoder_config;
encoder_config.streams = test::CreateVideoStreams(1);
VideoStream* stream = &encoder_config.streams[0];
stream->width = flags::Width();
stream->height = flags::Height();
stream->min_bitrate_bps = static_cast<int>(flags::MinBitrate()) * 1000;
stream->target_bitrate_bps = static_cast<int>(flags::MaxBitrate()) * 1000;
stream->max_bitrate_bps = static_cast<int>(flags::MaxBitrate()) * 1000;
stream->max_framerate = 30;
stream->max_qp = 56;
VideoSendStream* send_stream =
call->CreateVideoSendStream(send_config, encoder_config);
Clock* test_clock = Clock::GetRealTimeClock();
scoped_ptr<test::VideoCapturer> camera(
test::VideoCapturer::Create(send_stream->Input(),
flags::Width(),
flags::Height(),
flags::Fps(),
test_clock));
VideoReceiveStream::Config receive_config;
receive_config.rtp.remote_ssrc = send_config.rtp.ssrcs[0];
receive_config.rtp.local_ssrc = kReceiverLocalSsrc;
receive_config.rtp.nack.rtp_history_ms = 1000;
receive_config.rtp.rtx[kRtxPayloadType].ssrc = kSendRtxSsrc;
receive_config.rtp.rtx[kRtxPayloadType].payload_type = kRtxPayloadType;
receive_config.rtp.extensions.push_back(
RtpExtension(RtpExtension::kAbsSendTime, kAbsSendTimeExtensionId));
receive_config.renderer = loopback_video.get();
VideoReceiveStream::Decoder decoder =
test::CreateMatchingDecoder(send_config.encoder_settings);
receive_config.decoders.push_back(decoder);
VideoReceiveStream* receive_stream =
call->CreateVideoReceiveStream(receive_config);
receive_stream->Start();
send_stream->Start();
camera->Start();
test::PressEnterToContinue();
camera->Stop();
send_stream->Stop();
receive_stream->Stop();
call->DestroyVideoReceiveStream(receive_stream);
call->DestroyVideoSendStream(send_stream);
delete decoder.decoder;
transport.StopSending();
}
} // namespace webrtc
int main(int argc, char* argv[]) {
::testing::InitGoogleTest(&argc, argv);
google::ParseCommandLineFlags(&argc, &argv, true);
webrtc::test::InitFieldTrialsFromString(
webrtc::flags::FLAGS_force_fieldtrials);
webrtc::test::RunTest(webrtc::Loopback);
return 0;
}
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