shaka-packager/packager/media/chunking/chunking_handler_unittest.cc

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// Copyright 2017 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include "packager/media/chunking/chunking_handler.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "packager/media/base/media_handler_test_base.h"
#include "packager/status/status_test_util.h"
using ::testing::_;
using ::testing::ElementsAre;
using ::testing::IsEmpty;
namespace shaka {
namespace media {
namespace {
const size_t kStreamIndex = 0;
const int32_t kTimeScale0 = 800;
const int32_t kTimeScale1 = 1000;
const int64_t kDuration = 300;
const bool kKeyFrame = true;
const bool kIsSubsegment = true;
const bool kEncrypted = true;
} // namespace
class ChunkingHandlerTest : public MediaHandlerGraphTestBase {
public:
void SetUpChunkingHandler(int num_inputs,
const ChunkingParams& chunking_params) {
chunking_handler_.reset(new ChunkingHandler(chunking_params));
SetUpGraph(num_inputs, num_inputs, chunking_handler_);
ASSERT_OK(chunking_handler_->Initialize());
}
Status Process(std::unique_ptr<StreamData> stream_data) {
return chunking_handler_->Process(std::move(stream_data));
}
Status OnFlushRequest(int stream_index) {
return chunking_handler_->OnFlushRequest(stream_index);
}
protected:
std::shared_ptr<ChunkingHandler> chunking_handler_;
};
TEST_F(ChunkingHandlerTest, AudioNoSubsegmentsThenFlush) {
ChunkingParams chunking_params;
chunking_params.segment_duration_in_seconds = 1;
SetUpChunkingHandler(1, chunking_params);
ASSERT_OK(Process(StreamData::FromStreamInfo(
kStreamIndex, GetAudioStreamInfo(kTimeScale0))));
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(IsStreamInfo(kStreamIndex, kTimeScale0, !kEncrypted, _)));
for (int i = 0; i < 5; ++i) {
ClearOutputStreamDataVector();
ASSERT_OK(Process(StreamData::FromMediaSample(
kStreamIndex, GetMediaSample(i * kDuration, kDuration, kKeyFrame))));
// One output stream_data except when i == 3, which also has SegmentInfo.
if (i == 3) {
EXPECT_THAT(GetOutputStreamDataVector(),
ElementsAre(IsSegmentInfo(kStreamIndex, 0, kDuration * 3,
!kIsSubsegment, !kEncrypted),
IsMediaSample(kStreamIndex, i * kDuration,
kDuration, !kEncrypted, _)));
} else {
EXPECT_THAT(GetOutputStreamDataVector(),
ElementsAre(IsMediaSample(kStreamIndex, i * kDuration,
kDuration, !kEncrypted, _)));
}
}
ClearOutputStreamDataVector();
ASSERT_OK(OnFlushRequest(kStreamIndex));
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(IsSegmentInfo(kStreamIndex, kDuration * 3, kDuration * 2,
!kIsSubsegment, !kEncrypted)));
}
TEST_F(ChunkingHandlerTest, AudioWithSubsegments) {
ChunkingParams chunking_params;
chunking_params.segment_duration_in_seconds = 1;
chunking_params.subsegment_duration_in_seconds = 0.5;
SetUpChunkingHandler(1, chunking_params);
ASSERT_OK(Process(StreamData::FromStreamInfo(
kStreamIndex, GetAudioStreamInfo(kTimeScale0))));
for (int i = 0; i < 5; ++i) {
ASSERT_OK(Process(StreamData::FromMediaSample(
kStreamIndex, GetMediaSample(i * kDuration, kDuration, kKeyFrame))));
}
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(
IsStreamInfo(kStreamIndex, kTimeScale0, !kEncrypted, _),
IsMediaSample(kStreamIndex, 0, kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, kDuration, kDuration, !kEncrypted, _),
IsSegmentInfo(kStreamIndex, 0, kDuration * 2, kIsSubsegment,
!kEncrypted),
IsMediaSample(kStreamIndex, 2 * kDuration, kDuration, !kEncrypted, _),
IsSegmentInfo(kStreamIndex, 0, kDuration * 3, !kIsSubsegment,
!kEncrypted),
IsMediaSample(kStreamIndex, 3 * kDuration, kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, 4 * kDuration, kDuration, !kEncrypted,
_)));
}
TEST_F(ChunkingHandlerTest, VideoAndSubsegmentAndNonzeroStart) {
ChunkingParams chunking_params;
chunking_params.segment_duration_in_seconds = 1;
chunking_params.subsegment_duration_in_seconds = 0.3;
SetUpChunkingHandler(1, chunking_params);
ASSERT_OK(Process(StreamData::FromStreamInfo(
kStreamIndex, GetVideoStreamInfo(kTimeScale1))));
const int64_t kVideoStartTimestamp = 12345;
for (int i = 0; i < 6; ++i) {
// Alternate key frame.
const bool is_key_frame = (i % 2) == 1;
ASSERT_OK(Process(StreamData::FromMediaSample(
kStreamIndex, GetMediaSample(kVideoStartTimestamp + i * kDuration,
kDuration, is_key_frame))));
}
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(
IsStreamInfo(kStreamIndex, kTimeScale1, !kEncrypted, _),
// The first samples @ kStartTimestamp is discarded - not key frame.
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration,
kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 2,
kDuration, !kEncrypted, _),
// The next segment boundary 13245 / 1000 != 12645 / 1000.
IsSegmentInfo(kStreamIndex, kVideoStartTimestamp + kDuration,
kDuration * 2, !kIsSubsegment, !kEncrypted),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 3,
kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 4,
kDuration, !kEncrypted, _),
// The subsegment has duration kDuration * 2 since it can only
// terminate before key frame.
IsSegmentInfo(kStreamIndex, kVideoStartTimestamp + kDuration * 3,
kDuration * 2, kIsSubsegment, !kEncrypted),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 5,
kDuration, !kEncrypted, _)));
}
TEST_F(ChunkingHandlerTest, CueEvent) {
ChunkingParams chunking_params;
chunking_params.segment_duration_in_seconds = 1;
chunking_params.subsegment_duration_in_seconds = 0.5;
SetUpChunkingHandler(1, chunking_params);
ASSERT_OK(Process(StreamData::FromStreamInfo(
kStreamIndex, GetVideoStreamInfo(kTimeScale1))));
ClearOutputStreamDataVector();
const int64_t kVideoStartTimestamp = 12345;
const double kCueTimeInSeconds =
static_cast<double>(kVideoStartTimestamp + kDuration) / kTimeScale1;
auto cue_event = std::make_shared<CueEvent>();
cue_event->time_in_seconds = kCueTimeInSeconds;
for (int i = 0; i < 6; ++i) {
const bool is_key_frame = true;
ASSERT_OK(Process(StreamData::FromMediaSample(
kStreamIndex, GetMediaSample(kVideoStartTimestamp + i * kDuration,
kDuration, is_key_frame))));
if (i == 0) {
ASSERT_OK(Process(StreamData::FromCueEvent(kStreamIndex, cue_event)));
}
}
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(
IsMediaSample(kStreamIndex, kVideoStartTimestamp, kDuration,
!kEncrypted, _),
// A new segment is created due to the existance of Cue.
IsSegmentInfo(kStreamIndex, kVideoStartTimestamp, kDuration,
!kIsSubsegment, !kEncrypted),
IsCueEvent(kStreamIndex, kCueTimeInSeconds),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 1,
kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 2,
kDuration, !kEncrypted, _),
IsSegmentInfo(kStreamIndex, kVideoStartTimestamp + kDuration,
kDuration * 2, kIsSubsegment, !kEncrypted),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 3,
kDuration, !kEncrypted, _),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 4,
kDuration, !kEncrypted, _),
IsSegmentInfo(kStreamIndex, kVideoStartTimestamp + kDuration,
kDuration * 4, !kIsSubsegment, !kEncrypted),
IsMediaSample(kStreamIndex, kVideoStartTimestamp + kDuration * 5,
kDuration, !kEncrypted, _)));
}
TEST_F(ChunkingHandlerTest, LowLatencyDash) {
ChunkingParams chunking_params;
chunking_params.low_latency_dash_mode = true;
chunking_params.segment_duration_in_seconds = 1;
SetUpChunkingHandler(1, chunking_params);
// Each completed segment will contain 2 chunks
const int64_t kChunkDurationInMs = 500;
const int64_t kSegmentDurationInMs = 1000;
ASSERT_OK(Process(StreamData::FromStreamInfo(
kStreamIndex, GetVideoStreamInfo(kTimeScale1))));
for (int i = 0; i < 4; ++i) {
ASSERT_OK(Process(StreamData::FromMediaSample(
kStreamIndex, GetMediaSample(i * kChunkDurationInMs, kChunkDurationInMs,
kKeyFrame))));
}
// NOTE: Each MediaSample will create a chunk, dispatching SegmentInfo
EXPECT_THAT(
GetOutputStreamDataVector(),
ElementsAre(
IsStreamInfo(kStreamIndex, kTimeScale1, !kEncrypted, _),
// Chunk 1 for segment 1
IsMediaSample(kStreamIndex, 0, kChunkDurationInMs, !kEncrypted, _),
IsSegmentInfo(kStreamIndex, 0, kChunkDurationInMs, kIsSubsegment,
!kEncrypted),
// Chunk 2 for segment 1
IsMediaSample(kStreamIndex, kChunkDurationInMs, kChunkDurationInMs,
!kEncrypted, _),
IsSegmentInfo(kStreamIndex, 0, 2 * kChunkDurationInMs, !kIsSubsegment,
!kEncrypted),
// Chunk 1 for segment 2
IsMediaSample(kStreamIndex, kSegmentDurationInMs, kChunkDurationInMs,
!kEncrypted, _),
IsSegmentInfo(kStreamIndex, kSegmentDurationInMs, kChunkDurationInMs,
kIsSubsegment, !kEncrypted),
// Chunk 2 for segment 2
IsMediaSample(kStreamIndex, kSegmentDurationInMs + kChunkDurationInMs,
kChunkDurationInMs, !kEncrypted, _)));
}
} // namespace media
} // namespace shaka