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-rw-r--r--dom/media/gtest/TestMP3Demuxer.cpp579
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diff --git a/dom/media/gtest/TestMP3Demuxer.cpp b/dom/media/gtest/TestMP3Demuxer.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <gtest/gtest.h>
+#include <vector>
+
+#include "MP3Demuxer.h"
+#include "mozilla/ArrayUtils.h"
+#include "MockMediaResource.h"
+
+class MockMP3MediaResource;
+class MockMP3StreamMediaResource;
+namespace mozilla {
+DDLoggedTypeNameAndBase(::MockMP3MediaResource, MockMediaResource);
+DDLoggedTypeNameAndBase(::MockMP3StreamMediaResource, MockMP3MediaResource);
+} // namespace mozilla
+
+using namespace mozilla;
+using media::TimeUnit;
+
+// Regular MP3 file mock resource.
+class MockMP3MediaResource
+ : public MockMediaResource,
+ public DecoderDoctorLifeLogger<MockMP3MediaResource> {
+ public:
+ explicit MockMP3MediaResource(const char* aFileName)
+ : MockMediaResource(aFileName) {}
+
+ protected:
+ virtual ~MockMP3MediaResource() = default;
+};
+
+// MP3 stream mock resource.
+class MockMP3StreamMediaResource
+ : public MockMP3MediaResource,
+ public DecoderDoctorLifeLogger<MockMP3StreamMediaResource> {
+ public:
+ explicit MockMP3StreamMediaResource(const char* aFileName)
+ : MockMP3MediaResource(aFileName) {}
+
+ int64_t GetLength() override { return -1; }
+
+ protected:
+ virtual ~MockMP3StreamMediaResource() = default;
+};
+
+struct MP3Resource {
+ enum class HeaderType { NONE, XING, VBRI };
+ struct Duration {
+ int64_t mMicroseconds;
+ float mTolerableRate;
+
+ Duration(int64_t aMicroseconds, float aTolerableRate)
+ : mMicroseconds(aMicroseconds), mTolerableRate(aTolerableRate) {}
+ int64_t Tolerance() const {
+ return AssertedCast<int64_t>(mTolerableRate *
+ static_cast<float>(mMicroseconds));
+ }
+ };
+
+ const char* mFilePath{};
+ bool mIsVBR{};
+ HeaderType mHeaderType{HeaderType::NONE};
+ int64_t mFileSize{};
+ uint32_t mMPEGLayer{};
+ uint32_t mMPEGVersion{};
+ uint8_t mID3MajorVersion{};
+ uint8_t mID3MinorVersion{};
+ uint8_t mID3Flags{};
+ uint32_t mID3Size{};
+
+ Maybe<Duration> mDuration;
+ float mSeekError{};
+ uint32_t mSampleRate{};
+ uint32_t mSamplesPerFrame{};
+ uint32_t mNumSamples{};
+ uint32_t mPadding{};
+ uint32_t mEncoderDelay{};
+ uint32_t mBitrate{};
+ uint32_t mSlotSize{};
+ int32_t mPrivate{};
+
+ // The first n frame offsets.
+ std::vector<int32_t> mSyncOffsets;
+ RefPtr<MockMP3MediaResource> mResource;
+ RefPtr<MP3TrackDemuxer> mDemuxer;
+};
+
+class MP3DemuxerTest : public ::testing::Test {
+ protected:
+ void SetUp() override {
+ {
+ MP3Resource res;
+ res.mFilePath = "noise.mp3";
+ res.mIsVBR = false;
+ res.mHeaderType = MP3Resource::HeaderType::NONE;
+ res.mFileSize = 965257;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 3;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 2141;
+ // The tolerance comes from the fact that this file has ID3v1 information
+ // at the end, this trips our CBR duration calculation. The file has
+ // however the correct duration when decoded / demuxed completely.
+ res.mDuration = Some(MP3Resource::Duration{30093063, 0.00015f});
+ res.mSeekError = 0.02f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 1327104;
+ res.mPadding = 0;
+ res.mEncoderDelay = 0;
+ res.mBitrate = 256000;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {2151, 2987, 3823, 4659, 5495, 6331};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
+
+ // No content length can be estimated for CBR stream resources.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+ streamRes.mDuration = Nothing();
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ // This file trips up the MP3 demuxer if ID3v2 tags aren't properly
+ // skipped. If skipping is not properly implemented, depending on the
+ // strictness of the MPEG frame parser a false sync will be detected
+ // somewhere within the metadata at or after 112087, or failing that, at
+ // the artificially added extraneous header at 114532.
+ res.mFilePath = "id3v2header.mp3";
+ res.mIsVBR = false;
+ res.mHeaderType = MP3Resource::HeaderType::NONE;
+ res.mFileSize = 191302;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 3;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 115304;
+ // The tolerance comes from the fact that this file has ID3v1 information
+ // at the end, this trips our CBR duration calculation. The file has
+ // however the correct duration when decoded / demuxed completely.
+ res.mDuration = Some(MP3Resource::Duration{3160833, 0.0017f});
+ res.mSeekError = 0.02f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 139392;
+ res.mPadding = 0;
+ res.mEncoderDelay = 0;
+ res.mBitrate = 192000;
+ res.mSlotSize = 1;
+ res.mPrivate = 1;
+ const int syncs[] = {115314, 115941, 116568, 117195, 117822, 118449};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
+
+ // No content length can be estimated for CBR stream resources.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+ streamRes.mDuration = Nothing();
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ res.mFilePath = "noise_vbr.mp3";
+ res.mIsVBR = true;
+ res.mHeaderType = MP3Resource::HeaderType::XING;
+ res.mFileSize = 583679;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 3;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 2221;
+ res.mDuration = Some(MP3Resource::Duration{30081065, 0.f});
+ res.mSeekError = 0.02f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 1326575;
+ res.mPadding = 576;
+ res.mEncoderDelay = 2257;
+ res.mBitrate = 154000;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {2231, 2648, 2752, 3796, 4318, 4735};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
+
+ // VBR stream resources contain header info on total frames numbers, which
+ // is used to estimate the total duration.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ res.mFilePath = "small-shot.mp3";
+ res.mIsVBR = true;
+ res.mHeaderType = MP3Resource::HeaderType::XING;
+ res.mFileSize = 6825;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 4;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 24;
+ res.mDuration = Some(MP3Resource::Duration{301473, 0.f});
+ res.mSeekError = 0.2f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 12;
+ res.mPadding = 0;
+ res.mEncoderDelay = 1152 + 529;
+ res.mBitrate = 256000;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {34, 556, 1078, 1601, 2123, 2646, 3168,
+ 3691, 4213, 4736, 5258, 5781, 6303};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 13);
+
+ // No content length can be estimated for CBR stream resources.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ // This file contains a false frame sync at 34, just after the ID3 tag,
+ // which should be identified as a false positive and skipped.
+ res.mFilePath = "small-shot-false-positive.mp3";
+ res.mIsVBR = true;
+ res.mHeaderType = MP3Resource::HeaderType::XING;
+ res.mFileSize = 6845;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 4;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 24;
+ res.mDuration = Some(MP3Resource::Duration{301473, 0.f});
+ res.mSeekError = 0.2f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 12;
+ res.mPadding = 0;
+ res.mEncoderDelay = 1681;
+ res.mBitrate = 256000;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {54, 576, 1098, 1621, 2143, 2666, 3188,
+ 3711, 4233, 4756, 5278, 5801, 6323};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 13);
+
+ // No content length can be estimated for CBR stream resources.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ res.mFilePath = "small-shot-partial-xing.mp3";
+ res.mIsVBR = true;
+ res.mHeaderType = MP3Resource::HeaderType::XING;
+ res.mFileSize = 6825;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 4;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 24;
+ res.mDuration = Some(MP3Resource::Duration{301473, 0.f});
+ res.mSeekError = 0.2f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 12;
+ res.mPadding = 0;
+ res.mEncoderDelay = 1681;
+ res.mBitrate = 256000;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {34, 556, 1078, 1601, 2123, 2646, 3168,
+ 3691, 4213, 4736, 5258, 5781, 6303};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 13);
+
+ // No content length can be estimated for CBR stream resources.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ {
+ MP3Resource res;
+ res.mFilePath = "test_vbri.mp3";
+ res.mIsVBR = true;
+ res.mHeaderType = MP3Resource::HeaderType::VBRI;
+ res.mFileSize = 16519;
+ res.mMPEGLayer = 3;
+ res.mMPEGVersion = 1;
+ res.mID3MajorVersion = 3;
+ res.mID3MinorVersion = 0;
+ res.mID3Flags = 0;
+ res.mID3Size = 4202;
+ res.mDuration = Some(MP3Resource::Duration{731428, 0.f});
+ res.mSeekError = 0.02f;
+ res.mSampleRate = 44100;
+ res.mSamplesPerFrame = 1152;
+ res.mNumSamples = 29;
+ res.mPadding = 0;
+ res.mEncoderDelay = 1152;
+ res.mBitrate = 0;
+ res.mSlotSize = 1;
+ res.mPrivate = 0;
+ const int syncs[] = {4212, 4734, 5047, 5464, 5986, 6403};
+ res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
+
+ // VBR stream resources contain header info on total frames numbers, which
+ // is used to estimate the total duration.
+ MP3Resource streamRes = res;
+ streamRes.mFileSize = -1;
+
+ res.mResource = new MockMP3MediaResource(res.mFilePath);
+ res.mDemuxer = new MP3TrackDemuxer(res.mResource);
+ mTargets.push_back(res);
+
+ streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
+ streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
+ mTargets.push_back(streamRes);
+ }
+
+ for (auto& target : mTargets) {
+ ASSERT_EQ(NS_OK, target.mResource->Open());
+ ASSERT_TRUE(target.mDemuxer->Init());
+ }
+ }
+
+ std::vector<MP3Resource> mTargets;
+};
+
+TEST_F(MP3DemuxerTest, ID3Tags) {
+ for (const auto& target : mTargets) {
+ RefPtr<MediaRawData> frame(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frame);
+
+ const auto& id3 = target.mDemuxer->ID3Header();
+ ASSERT_TRUE(id3.IsValid());
+
+ EXPECT_EQ(target.mID3MajorVersion, id3.MajorVersion());
+ EXPECT_EQ(target.mID3MinorVersion, id3.MinorVersion());
+ EXPECT_EQ(target.mID3Flags, id3.Flags());
+ EXPECT_EQ(target.mID3Size, id3.Size());
+ }
+}
+
+TEST_F(MP3DemuxerTest, VBRHeader) {
+ for (const auto& target : mTargets) {
+ RefPtr<MediaRawData> frame(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frame);
+
+ const auto& vbr = target.mDemuxer->VBRInfo();
+
+ if (target.mHeaderType == MP3Resource::HeaderType::XING) {
+ EXPECT_EQ(FrameParser::VBRHeader::XING, vbr.Type());
+ } else if (target.mHeaderType == MP3Resource::HeaderType::VBRI) {
+ EXPECT_TRUE(target.mIsVBR);
+ EXPECT_EQ(FrameParser::VBRHeader::VBRI, vbr.Type());
+ } else { // MP3Resource::HeaderType::NONE
+ EXPECT_EQ(FrameParser::VBRHeader::NONE, vbr.Type());
+ EXPECT_FALSE(vbr.NumAudioFrames());
+ }
+ }
+}
+
+TEST_F(MP3DemuxerTest, FrameParsing) {
+ for (const auto& target : mTargets) {
+ printf("Testing: %s\n", target.mFilePath);
+ RefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frameData);
+ EXPECT_EQ(target.mFileSize, target.mDemuxer->StreamLength());
+
+ const auto& id3 = target.mDemuxer->ID3Header();
+ ASSERT_TRUE(id3.IsValid());
+
+ int64_t parsedLength = id3.Size();
+ uint64_t bitrateSum = 0;
+ uint32_t numFrames = 0;
+ uint32_t numSamples = 0;
+
+ while (frameData) {
+ if (static_cast<int64_t>(target.mSyncOffsets.size()) > numFrames) {
+ // Test sync offsets.
+ EXPECT_EQ(target.mSyncOffsets[numFrames], frameData->mOffset);
+ }
+
+ ++numFrames;
+ parsedLength += AssertedCast<int64_t>(frameData->Size());
+
+ const auto& frame = target.mDemuxer->LastFrame();
+ const auto& header = frame.Header();
+ ASSERT_TRUE(header.IsValid());
+
+ numSamples += header.SamplesPerFrame();
+
+ EXPECT_EQ(target.mMPEGLayer, header.Layer());
+ EXPECT_EQ(target.mSampleRate, header.SampleRate());
+ EXPECT_EQ(target.mSamplesPerFrame, header.SamplesPerFrame());
+ EXPECT_EQ(target.mSlotSize, header.SlotSize());
+ EXPECT_EQ(target.mPrivate, header.Private());
+
+ if (target.mIsVBR) {
+ // Used to compute the average bitrate for VBR streams.
+ bitrateSum += target.mBitrate;
+ } else {
+ EXPECT_EQ(target.mBitrate, header.Bitrate());
+ }
+
+ frameData = target.mDemuxer->DemuxSample();
+ }
+
+ EXPECT_EQ(target.mPadding, target.mDemuxer->PaddingFrames());
+ EXPECT_EQ(target.mEncoderDelay, target.mDemuxer->EncoderDelayFrames());
+ EXPECT_GE(numSamples, 0u);
+
+ // There may be trailing headers which we don't parse, so the stream length
+ // is the upper bound.
+ if (target.mFileSize > 0) {
+ EXPECT_GE(target.mFileSize, parsedLength);
+ }
+
+ if (target.mIsVBR) {
+ ASSERT_TRUE(numFrames);
+ EXPECT_EQ(target.mBitrate, bitrateSum / numFrames);
+ }
+ }
+}
+
+TEST_F(MP3DemuxerTest, Duration) {
+ for (const auto& target : mTargets) {
+ printf("Testing: %s\n", target.mFilePath);
+ RefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frameData);
+ EXPECT_EQ(target.mFileSize, target.mDemuxer->StreamLength());
+
+ while (frameData) {
+ if (target.mDuration) {
+ ASSERT_TRUE(target.mDemuxer->Duration());
+ EXPECT_NEAR(target.mDuration->mMicroseconds,
+ target.mDemuxer->Duration()->ToMicroseconds(),
+ target.mDuration->Tolerance());
+ } else {
+ EXPECT_FALSE(target.mDemuxer->Duration());
+ }
+ frameData = target.mDemuxer->DemuxSample();
+ }
+ if (target.mDuration) {
+ // At the end, the durations should always be exact.
+ EXPECT_EQ(target.mDuration->mMicroseconds,
+ target.mDemuxer->Duration()->ToMicroseconds());
+ }
+ }
+
+ // Seek out of range tests.
+ for (const auto& target : mTargets) {
+ printf("Testing %s\n", target.mFilePath);
+ // Skip tests for stream media resources because of lacking duration.
+ if (target.mFileSize <= 0) {
+ continue;
+ }
+
+ target.mDemuxer->Reset();
+ RefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frameData);
+
+ ASSERT_TRUE(target.mDemuxer->Duration());
+ const auto duration = target.mDemuxer->Duration().value();
+ const auto pos = duration + TimeUnit::FromMicroseconds(1e6);
+
+ // Attempt to seek 1 second past the end of stream.
+ target.mDemuxer->Seek(pos);
+ // The seek should bring us to the end of the stream.
+ EXPECT_NEAR(duration.ToMicroseconds(),
+ target.mDemuxer->SeekPosition().ToMicroseconds(),
+ target.mSeekError * duration.ToMicroseconds());
+
+ // Since we're at the end of the stream, there should be no frames left.
+ frameData = target.mDemuxer->DemuxSample();
+ ASSERT_FALSE(frameData);
+ }
+}
+
+TEST_F(MP3DemuxerTest, Seek) {
+ for (const auto& target : mTargets) {
+ RefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frameData);
+
+ const auto seekTime = TimeUnit::FromSeconds(1);
+ auto pos = target.mDemuxer->SeekPosition();
+
+ while (frameData) {
+ EXPECT_NEAR(pos.ToMicroseconds(),
+ target.mDemuxer->SeekPosition().ToMicroseconds(),
+ target.mSeekError * pos.ToMicroseconds());
+
+ pos += seekTime;
+ target.mDemuxer->Seek(pos);
+ frameData = target.mDemuxer->DemuxSample();
+ }
+ }
+
+ // Seeking should work with in-between resets, too.
+ for (const auto& target : mTargets) {
+ target.mDemuxer->Reset();
+ RefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
+ ASSERT_TRUE(frameData);
+
+ const auto seekTime = TimeUnit::FromSeconds(1);
+ auto pos = target.mDemuxer->SeekPosition();
+
+ while (frameData) {
+ EXPECT_NEAR(pos.ToMicroseconds(),
+ target.mDemuxer->SeekPosition().ToMicroseconds(),
+ target.mSeekError * pos.ToMicroseconds());
+
+ pos += seekTime;
+ target.mDemuxer->Reset();
+ target.mDemuxer->Seek(pos);
+ frameData = target.mDemuxer->DemuxSample();
+ }
+ }
+}
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