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Remove the timestamp_ member of StreamGenerator.

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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}
This commit is contained in:
Wan-Teh Chang 2015-06-05 14:45:05 -07:00
parent f291287a7e
commit 349c2bb223
4 changed files with 27 additions and 39 deletions
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18
webrtc/modules/video_coding/main/source/jitter_buffer_unittest.cc
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@ -129,7 +129,7 @@ class TestRunningJitterBuffer : public ::testing::Test {
max_nack_list_size_ = 150;
oldest_packet_to_nack_ = 250;
jitter_buffer_ = new VCMJitterBuffer(clock_.get(), &event_factory_);
stream_generator_ = new StreamGenerator(0, 0, clock_->TimeInMilliseconds());
stream_generator_ = new StreamGenerator(0, clock_->TimeInMilliseconds());
jitter_buffer_->Start();
jitter_buffer_->SetNackSettings(max_nack_list_size_,
oldest_packet_to_nack_, 0);
@ -1995,7 +1995,7 @@ TEST_F(TestJitterBufferNack, NoNackListReturnedBeforeFirstDecode) {
}
TEST_F(TestJitterBufferNack, NackListBuiltBeforeFirstDecode) {
stream_generator_->Init(0, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(0, clock_->TimeInMilliseconds());
InsertFrame(kVideoFrameKey);
stream_generator_->GenerateFrame(kVideoFrameDelta, 2, 0,
clock_->TimeInMilliseconds());
@ -2008,7 +2008,7 @@ TEST_F(TestJitterBufferNack, NackListBuiltBeforeFirstDecode) {
}
TEST_F(TestJitterBufferNack, VerifyRetransmittedFlag) {
stream_generator_->Init(0, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(0, clock_->TimeInMilliseconds());
stream_generator_->GenerateFrame(kVideoFrameKey, 3, 0,
clock_->TimeInMilliseconds());
VCMPacket packet;
@ -2033,7 +2033,7 @@ TEST_F(TestJitterBufferNack, VerifyRetransmittedFlag) {
}
TEST_F(TestJitterBufferNack, UseNackToRecoverFirstKeyFrame) {
stream_generator_->Init(0, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(0, clock_->TimeInMilliseconds());
stream_generator_->GenerateFrame(kVideoFrameKey, 3, 0,
clock_->TimeInMilliseconds());
EXPECT_EQ(kIncomplete, InsertPacketAndPop(0));
@ -2050,7 +2050,7 @@ TEST_F(TestJitterBufferNack, UseNackToRecoverFirstKeyFrame) {
TEST_F(TestJitterBufferNack, UseNackToRecoverFirstKeyFrameSecondInQueue) {
VCMPacket packet;
stream_generator_->Init(0, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(0, clock_->TimeInMilliseconds());
// First frame is delta.
stream_generator_->GenerateFrame(kVideoFrameDelta, 3, 0,
clock_->TimeInMilliseconds());
@ -2114,7 +2114,7 @@ TEST_F(TestJitterBufferNack, NormalOperationWrap) {
// ------- ------------------------------------------------------------
// | 65532 | | 65533 | 65534 | 65535 | x | 1 | .. | 9 | x | 11 |.....| 96 |
// ------- ------------------------------------------------------------
stream_generator_->Init(65532, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(65532, clock_->TimeInMilliseconds());
InsertFrame(kVideoFrameKey);
EXPECT_FALSE(request_key_frame);
EXPECT_TRUE(DecodeCompleteFrame());
@ -2148,7 +2148,7 @@ TEST_F(TestJitterBufferNack, NormalOperationWrap2) {
// -----------------------------------
// | 65532 | 65533 | 65534 | x | 0 | 1 |
// -----------------------------------
stream_generator_->Init(65532, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(65532, clock_->TimeInMilliseconds());
InsertFrame(kVideoFrameKey);
EXPECT_FALSE(request_key_frame);
EXPECT_TRUE(DecodeCompleteFrame());
@ -2176,7 +2176,7 @@ TEST_F(TestJitterBufferNack, NormalOperationWrap2) {
}
TEST_F(TestJitterBufferNack, ResetByFutureKeyFrameDoesntError) {
stream_generator_->Init(0, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(0, clock_->TimeInMilliseconds());
InsertFrame(kVideoFrameKey);
EXPECT_TRUE(DecodeCompleteFrame());
bool extended = false;
@ -2186,7 +2186,7 @@ TEST_F(TestJitterBufferNack, ResetByFutureKeyFrameDoesntError) {
// Far-into-the-future video frame, could be caused by resetting the encoder
// or otherwise restarting. This should not fail when error when the packet is
// a keyframe, even if all of the nack list needs to be flushed.
stream_generator_->Init(10000, 0, clock_->TimeInMilliseconds());
stream_generator_->Init(10000, clock_->TimeInMilliseconds());
clock_->AdvanceTimeMilliseconds(kDefaultFramePeriodMs);
InsertFrame(kVideoFrameKey);
EXPECT_TRUE(DecodeCompleteFrame());

4
webrtc/modules/video_coding/main/source/receiver_unittest.cc
View File

@ -31,8 +31,8 @@ class TestVCMReceiver : public ::testing::Test {
: clock_(new SimulatedClock(0)),
timing_(clock_.get()),
receiver_(&timing_, clock_.get(), &event_factory_) {
stream_generator_.reset(new
StreamGenerator(0, 0, clock_->TimeInMilliseconds()));
stream_generator_.reset(
new StreamGenerator(0, clock_->TimeInMilliseconds()));
}
virtual void SetUp() {

21
webrtc/modules/video_coding/main/source/test/stream_generator.cc
View File

@ -21,20 +21,13 @@
namespace webrtc {
StreamGenerator::StreamGenerator(uint16_t start_seq_num,
uint32_t start_timestamp,
int64_t current_time)
: packets_(),
sequence_number_(start_seq_num),
timestamp_(start_timestamp),
start_time_(current_time) {}
StreamGenerator::StreamGenerator(uint16_t start_seq_num, int64_t current_time)
: packets_(), sequence_number_(start_seq_num), start_time_(current_time) {
}
void StreamGenerator::Init(uint16_t start_seq_num,
uint32_t start_timestamp,
int64_t current_time) {
void StreamGenerator::Init(uint16_t start_seq_num, int64_t current_time) {
packets_.clear();
sequence_number_ = start_seq_num;
timestamp_ = start_timestamp;
start_time_ = current_time;
memset(&packet_buffer, 0, sizeof(packet_buffer));
}
@ -43,18 +36,18 @@ void StreamGenerator::GenerateFrame(FrameType type,
int num_media_packets,
int num_empty_packets,
int64_t current_time) {
timestamp_ = 90 * (current_time - start_time_);
uint32_t timestamp = 90 * (current_time - start_time_);
for (int i = 0; i < num_media_packets; ++i) {
const int packet_size =
(kFrameSize + num_media_packets / 2) / num_media_packets;
bool marker_bit = (i == num_media_packets - 1);
packets_.push_back(GeneratePacket(
sequence_number_, timestamp_, packet_size, (i == 0), marker_bit, type));
sequence_number_, timestamp, packet_size, (i == 0), marker_bit, type));
++sequence_number_;
}
for (int i = 0; i < num_empty_packets; ++i) {
packets_.push_back(GeneratePacket(
sequence_number_, timestamp_, 0, false, false, kFrameEmpty));
sequence_number_, timestamp, 0, false, false, kFrameEmpty));
++sequence_number_;
}
}

23
webrtc/modules/video_coding/main/source/test/stream_generator.h
View File

@ -28,25 +28,14 @@ const int kDefaultFramePeriodMs = 1000 / kDefaultFrameRate;
class StreamGenerator {
public:
StreamGenerator(uint16_t start_seq_num,
uint32_t start_timestamp,
int64_t current_time);
void Init(uint16_t start_seq_num,
uint32_t start_timestamp,
int64_t current_time);
StreamGenerator(uint16_t start_seq_num, int64_t current_time);
void Init(uint16_t start_seq_num, int64_t current_time);
void GenerateFrame(FrameType type,
int num_media_packets,
int num_empty_packets,
int64_t current_time);
VCMPacket GeneratePacket(uint16_t sequence_number,
uint32_t timestamp,
unsigned int size,
bool first_packet,
bool marker_bit,
FrameType type);
bool PopPacket(VCMPacket* packet, int index);
void DropLastPacket();
@ -59,11 +48,17 @@ class StreamGenerator {
int PacketsRemaining() const;
private:
VCMPacket GeneratePacket(uint16_t sequence_number,
uint32_t timestamp,
unsigned int size,
bool first_packet,
bool marker_bit,
FrameType type);
std::list<VCMPacket>::iterator GetPacketIterator(int index);
std::list<VCMPacket> packets_;
uint16_t sequence_number_;
uint32_t timestamp_;
int64_t start_time_;
uint8_t packet_buffer[kMaxPacketSize];