349c2bb223
timestamp_ is only used in GenerateFrame() and its old value is discarded. So it just needs to be a local variable in GenerateFrame(). As a result, we can remove the start_timestamp parameter from the constructor and Init(). Also mark the GeneratePacket() method private because it is only used internally. R=stefan@webrtc.org BUG=none TEST=none Review URL: https://webrtc-codereview.appspot.com/50149004 Cr-Commit-Position: refs/heads/master@{#9386}
318 lines
12 KiB
C++
318 lines
12 KiB
C++
/* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <string.h>
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#include <list>
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#include "testing/gtest/include/gtest/gtest.h"
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#include "webrtc/modules/video_coding/main/source/packet.h"
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#include "webrtc/modules/video_coding/main/source/receiver.h"
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#include "webrtc/modules/video_coding/main/source/test/stream_generator.h"
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#include "webrtc/modules/video_coding/main/source/timing.h"
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#include "webrtc/modules/video_coding/main/test/test_util.h"
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#include "webrtc/system_wrappers/interface/clock.h"
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#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
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namespace webrtc {
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class TestVCMReceiver : public ::testing::Test {
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protected:
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enum { kWidth = 640 };
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enum { kHeight = 480 };
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TestVCMReceiver()
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: clock_(new SimulatedClock(0)),
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timing_(clock_.get()),
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receiver_(&timing_, clock_.get(), &event_factory_) {
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stream_generator_.reset(
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new StreamGenerator(0, clock_->TimeInMilliseconds()));
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}
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virtual void SetUp() {
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receiver_.Reset();
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}
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int32_t InsertPacket(int index) {
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VCMPacket packet;
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bool packet_available = stream_generator_->GetPacket(&packet, index);
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EXPECT_TRUE(packet_available);
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if (!packet_available)
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return kGeneralError; // Return here to avoid crashes below.
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return receiver_.InsertPacket(packet, kWidth, kHeight);
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}
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int32_t InsertPacketAndPop(int index) {
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VCMPacket packet;
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bool packet_available = stream_generator_->PopPacket(&packet, index);
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EXPECT_TRUE(packet_available);
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if (!packet_available)
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return kGeneralError; // Return here to avoid crashes below.
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return receiver_.InsertPacket(packet, kWidth, kHeight);
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}
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int32_t InsertFrame(FrameType frame_type, bool complete) {
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int num_of_packets = complete ? 1 : 2;
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stream_generator_->GenerateFrame(
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frame_type,
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(frame_type != kFrameEmpty) ? num_of_packets : 0,
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(frame_type == kFrameEmpty) ? 1 : 0,
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clock_->TimeInMilliseconds());
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int32_t ret = InsertPacketAndPop(0);
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if (!complete) {
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// Drop the second packet.
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VCMPacket packet;
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stream_generator_->PopPacket(&packet, 0);
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}
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clock_->AdvanceTimeMilliseconds(kDefaultFramePeriodMs);
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return ret;
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}
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bool DecodeNextFrame() {
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int64_t render_time_ms = 0;
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VCMEncodedFrame* frame =
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receiver_.FrameForDecoding(0, render_time_ms, false);
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if (!frame)
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return false;
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receiver_.ReleaseFrame(frame);
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return true;
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}
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rtc::scoped_ptr<SimulatedClock> clock_;
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VCMTiming timing_;
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NullEventFactory event_factory_;
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VCMReceiver receiver_;
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rtc::scoped_ptr<StreamGenerator> stream_generator_;
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};
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TEST_F(TestVCMReceiver, RenderBufferSize_AllComplete) {
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EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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int num_of_frames = 10;
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for (int i = 0; i < num_of_frames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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EXPECT_EQ(num_of_frames * kDefaultFramePeriodMs,
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receiver_.RenderBufferSizeMs());
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}
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TEST_F(TestVCMReceiver, RenderBufferSize_SkipToKeyFrame) {
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EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
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const int kNumOfNonDecodableFrames = 2;
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for (int i = 0; i < kNumOfNonDecodableFrames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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const int kNumOfFrames = 10;
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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for (int i = 0; i < kNumOfFrames - 1; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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EXPECT_EQ((kNumOfFrames - 1) * kDefaultFramePeriodMs,
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receiver_.RenderBufferSizeMs());
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}
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TEST_F(TestVCMReceiver, RenderBufferSize_NotAllComplete) {
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EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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int num_of_frames = 10;
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for (int i = 0; i < num_of_frames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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num_of_frames++;
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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for (int i = 0; i < num_of_frames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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EXPECT_EQ((num_of_frames - 1) * kDefaultFramePeriodMs,
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receiver_.RenderBufferSizeMs());
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}
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TEST_F(TestVCMReceiver, RenderBufferSize_NoKeyFrame) {
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EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
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int num_of_frames = 10;
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for (int i = 0; i < num_of_frames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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int64_t next_render_time_ms = 0;
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VCMEncodedFrame* frame = receiver_.FrameForDecoding(10, next_render_time_ms);
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EXPECT_TRUE(frame == NULL);
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receiver_.ReleaseFrame(frame);
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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for (int i = 0; i < num_of_frames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_Empty) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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const int kMinDelayMs = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Advance time until it's time to decode the key frame.
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clock_->AdvanceTimeMilliseconds(kMinDelayMs);
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EXPECT_TRUE(DecodeNextFrame());
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_FALSE(request_key_frame);
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_NoKeyFrame) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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const int kNumFrames = kDefaultFrameRate * kMaxNonDecodableDuration / 1000;
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for (int i = 0; i < kNumFrames; ++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_TRUE(request_key_frame);
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_OneIncomplete) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
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kMaxNonDecodableDuration + 500) / 1000;
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const int kMinDelayMs = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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receiver_.SetMinReceiverDelay(kMinDelayMs);
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int64_t key_frame_inserted = clock_->TimeInMilliseconds();
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Insert an incomplete frame.
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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// Insert enough frames to have too long non-decodable sequence.
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for (int i = 0; i < kMaxNonDecodableDurationFrames;
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++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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// Advance time until it's time to decode the key frame.
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clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
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key_frame_inserted);
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EXPECT_TRUE(DecodeNextFrame());
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// Make sure we get a key frame request.
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_TRUE(request_key_frame);
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_NoTrigger) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
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kMaxNonDecodableDuration + 500) / 1000;
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const int kMinDelayMs = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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receiver_.SetMinReceiverDelay(kMinDelayMs);
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int64_t key_frame_inserted = clock_->TimeInMilliseconds();
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Insert an incomplete frame.
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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// Insert all but one frame to not trigger a key frame request due to
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// too long duration of non-decodable frames.
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for (int i = 0; i < kMaxNonDecodableDurationFrames - 1;
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++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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// Advance time until it's time to decode the key frame.
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clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
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key_frame_inserted);
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EXPECT_TRUE(DecodeNextFrame());
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// Make sure we don't get a key frame request since we haven't generated
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// enough frames.
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_FALSE(request_key_frame);
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_NoTrigger2) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
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kMaxNonDecodableDuration + 500) / 1000;
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const int kMinDelayMs = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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receiver_.SetMinReceiverDelay(kMinDelayMs);
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int64_t key_frame_inserted = clock_->TimeInMilliseconds();
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Insert enough frames to have too long non-decodable sequence, except that
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// we don't have any losses.
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for (int i = 0; i < kMaxNonDecodableDurationFrames;
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++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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// Insert an incomplete frame.
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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// Advance time until it's time to decode the key frame.
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clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
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key_frame_inserted);
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EXPECT_TRUE(DecodeNextFrame());
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// Make sure we don't get a key frame request since the non-decodable duration
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// is only one frame.
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_FALSE(request_key_frame);
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}
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TEST_F(TestVCMReceiver, NonDecodableDuration_KeyFrameAfterIncompleteFrames) {
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// Enable NACK and with no RTT thresholds for disabling retransmission delay.
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receiver_.SetNackMode(kNack, -1, -1);
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const size_t kMaxNackListSize = 1000;
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const int kMaxPacketAgeToNack = 1000;
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const int kMaxNonDecodableDuration = 500;
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const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
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kMaxNonDecodableDuration + 500) / 1000;
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const int kMinDelayMs = 500;
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receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
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kMaxNonDecodableDuration);
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receiver_.SetMinReceiverDelay(kMinDelayMs);
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int64_t key_frame_inserted = clock_->TimeInMilliseconds();
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Insert an incomplete frame.
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EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
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// Insert enough frames to have too long non-decodable sequence.
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for (int i = 0; i < kMaxNonDecodableDurationFrames;
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++i) {
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EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
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}
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EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
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// Advance time until it's time to decode the key frame.
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clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
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key_frame_inserted);
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EXPECT_TRUE(DecodeNextFrame());
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// Make sure we don't get a key frame request since we have a key frame
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// in the list.
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bool request_key_frame = false;
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std::vector<uint16_t> nack_list = receiver_.NackList(&request_key_frame);
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EXPECT_FALSE(request_key_frame);
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}
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} // namespace webrtc
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