зеркало из https://github.com/mozilla/gecko-dev.git
352 строки
11 KiB
C++
352 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <gtest/gtest.h>
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#include <vector>
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#include "MP3Demuxer.h"
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#include "mozilla/ArrayUtils.h"
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#include "MockMediaResource.h"
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using namespace mozilla;
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using namespace mozilla::mp3;
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// Regular MP3 file mock resource.
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class MockMP3MediaResource : public MockMediaResource {
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public:
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explicit MockMP3MediaResource(const char* aFileName)
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: MockMediaResource(aFileName)
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{}
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protected:
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virtual ~MockMP3MediaResource() {}
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};
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// MP3 stream mock resource.
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class MockMP3StreamMediaResource : public MockMP3MediaResource {
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public:
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explicit MockMP3StreamMediaResource(const char* aFileName)
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: MockMP3MediaResource(aFileName)
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{}
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int64_t GetLength() override { return -1; }
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protected:
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virtual ~MockMP3StreamMediaResource() {}
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};
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struct MP3Resource {
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const char* mFilePath;
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bool mIsVBR;
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int64_t mFileSize;
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int32_t mMPEGLayer;
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int32_t mMPEGVersion;
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uint8_t mID3MajorVersion;
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uint8_t mID3MinorVersion;
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uint8_t mID3Flags;
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uint32_t mID3Size;
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int64_t mDuration;
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float mDurationError;
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float mSeekError;
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int32_t mSampleRate;
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int32_t mSamplesPerFrame;
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uint32_t mNumSamples;
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// TODO: temp solution, we could parse them instead or account for them
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// otherwise.
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int32_t mNumTrailingFrames;
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int32_t mBitrate;
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int32_t mSlotSize;
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int32_t mPrivate;
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// The first n frame offsets.
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std::vector<int32_t> mSyncOffsets;
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nsRefPtr<MockMP3MediaResource> mResource;
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nsRefPtr<MP3TrackDemuxer> mDemuxer;
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};
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class MP3DemuxerTest : public ::testing::Test {
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protected:
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void SetUp() override {
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{
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MP3Resource res;
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res.mFilePath = "noise.mp3";
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res.mIsVBR = false;
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res.mFileSize = 965257;
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res.mMPEGLayer = 3;
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res.mMPEGVersion = 1;
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res.mID3MajorVersion = 3;
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res.mID3MinorVersion = 0;
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res.mID3Flags = 0;
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res.mID3Size = 2141;
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res.mDuration = 30067000;
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res.mDurationError = 0.001f;
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res.mSeekError = 0.02f;
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res.mSampleRate = 44100;
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res.mSamplesPerFrame = 1152;
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res.mNumSamples = 1325952;
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res.mNumTrailingFrames = 2;
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res.mBitrate = 256000;
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res.mSlotSize = 1;
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res.mPrivate = 0;
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const int syncs[] = { 2151, 2987, 3823, 4659, 5495, 6331 };
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res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
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// No content length can be estimated for CBR stream resources.
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MP3Resource streamRes = res;
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streamRes.mFileSize = -1;
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streamRes.mDuration = -1;
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streamRes.mDurationError = 0.0f;
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res.mResource = new MockMP3MediaResource(res.mFilePath);
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res.mDemuxer = new MP3TrackDemuxer(res.mResource);
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mTargets.push_back(res);
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streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
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streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
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mTargets.push_back(streamRes);
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}
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{
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MP3Resource res;
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// This file trips up the MP3 demuxer if ID3v2 tags aren't properly skipped. If skipping is
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// not properly implemented, depending on the strictness of the MPEG frame parser a false
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// sync will be detected somewhere within the metadata at or after 112087, or failing
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// that, at the artificially added extraneous header at 114532.
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res.mFilePath = "id3v2header.mp3";
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res.mIsVBR = false;
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res.mFileSize = 191302;
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res.mMPEGLayer = 3;
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res.mMPEGVersion = 1;
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res.mID3MajorVersion = 3;
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res.mID3MinorVersion = 0;
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res.mID3Flags = 0;
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res.mID3Size = 115304;
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res.mDuration = 3160816;
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res.mDurationError = 0.001f;
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res.mSeekError = 0.02f;
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res.mSampleRate = 44100;
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res.mSamplesPerFrame = 1152;
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res.mNumSamples = 139392;
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res.mNumTrailingFrames = 0;
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res.mBitrate = 192000;
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res.mSlotSize = 1;
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res.mPrivate = 1;
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const int syncs[] = { 115314, 115941, 116568, 117195, 117822, 118449 };
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res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
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// No content length can be estimated for CBR stream resources.
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MP3Resource streamRes = res;
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streamRes.mFileSize = -1;
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streamRes.mDuration = -1;
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streamRes.mDurationError = 0.0f;
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res.mResource = new MockMP3MediaResource(res.mFilePath);
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res.mDemuxer = new MP3TrackDemuxer(res.mResource);
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mTargets.push_back(res);
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streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
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streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
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mTargets.push_back(streamRes);
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}
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{
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MP3Resource res;
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res.mFilePath = "noise_vbr.mp3";
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res.mIsVBR = true;
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res.mFileSize = 583679;
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res.mMPEGLayer = 3;
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res.mMPEGVersion = 1;
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res.mID3MajorVersion = 3;
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res.mID3MinorVersion = 0;
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res.mID3Flags = 0;
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res.mID3Size = 2221;
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res.mDuration = 30081000;
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res.mDurationError = 0.005f;
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res.mSeekError = 0.02f;
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res.mSampleRate = 44100;
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res.mSamplesPerFrame = 1152;
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res.mNumSamples = 1326575;
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res.mNumTrailingFrames = 3;
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res.mBitrate = 154000;
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res.mSlotSize = 1;
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res.mPrivate = 0;
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const int syncs[] = { 2231, 2648, 2752, 3796, 4318, 4735 };
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res.mSyncOffsets.insert(res.mSyncOffsets.begin(), syncs, syncs + 6);
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// VBR stream resources contain header info on total frames numbers, which
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// is used to estimate the total duration.
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MP3Resource streamRes = res;
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streamRes.mFileSize = -1;
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res.mResource = new MockMP3MediaResource(res.mFilePath);
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res.mDemuxer = new MP3TrackDemuxer(res.mResource);
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mTargets.push_back(res);
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streamRes.mResource = new MockMP3StreamMediaResource(streamRes.mFilePath);
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streamRes.mDemuxer = new MP3TrackDemuxer(streamRes.mResource);
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mTargets.push_back(streamRes);
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}
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for (auto& target: mTargets) {
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ASSERT_EQ(NS_OK, target.mResource->Open(nullptr));
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ASSERT_TRUE(target.mDemuxer->Init());
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}
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}
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std::vector<MP3Resource> mTargets;
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};
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TEST_F(MP3DemuxerTest, ID3Tags) {
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for (const auto& target: mTargets) {
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nsRefPtr<MediaRawData> frame(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frame);
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const auto& id3 = target.mDemuxer->ID3Header();
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ASSERT_TRUE(id3.IsValid());
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EXPECT_EQ(target.mID3MajorVersion, id3.MajorVersion());
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EXPECT_EQ(target.mID3MinorVersion, id3.MinorVersion());
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EXPECT_EQ(target.mID3Flags, id3.Flags());
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EXPECT_EQ(target.mID3Size, id3.Size());
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}
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}
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TEST_F(MP3DemuxerTest, VBRHeader) {
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for (const auto& target: mTargets) {
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nsRefPtr<MediaRawData> frame(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frame);
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const auto& vbr = target.mDemuxer->VBRInfo();
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if (target.mIsVBR) {
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EXPECT_EQ(FrameParser::VBRHeader::XING, vbr.Type());
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// TODO: find reference number which accounts for trailing headers.
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// EXPECT_EQ(target.mNumSamples / target.mSamplesPerFrame, vbr.NumFrames());
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} else {
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EXPECT_EQ(FrameParser::VBRHeader::NONE, vbr.Type());
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EXPECT_EQ(-1, vbr.NumFrames());
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}
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}
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}
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TEST_F(MP3DemuxerTest, FrameParsing) {
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for (const auto& target: mTargets) {
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nsRefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frameData);
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EXPECT_EQ(target.mFileSize, target.mDemuxer->StreamLength());
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const auto& id3 = target.mDemuxer->ID3Header();
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ASSERT_TRUE(id3.IsValid());
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int64_t parsedLength = id3.Size();
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int64_t bitrateSum = 0;
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int32_t numFrames = 0;
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int32_t numSamples = 0;
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while (frameData) {
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if (static_cast<int64_t>(target.mSyncOffsets.size()) > numFrames) {
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// Test sync offsets.
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EXPECT_EQ(target.mSyncOffsets[numFrames], frameData->mOffset);
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}
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++numFrames;
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parsedLength += frameData->Size();
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const auto& frame = target.mDemuxer->LastFrame();
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const auto& header = frame.Header();
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ASSERT_TRUE(header.IsValid());
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numSamples += header.SamplesPerFrame();
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EXPECT_EQ(target.mMPEGLayer, header.Layer());
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EXPECT_EQ(target.mSampleRate, header.SampleRate());
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EXPECT_EQ(target.mSamplesPerFrame, header.SamplesPerFrame());
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EXPECT_EQ(target.mSlotSize, header.SlotSize());
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EXPECT_EQ(target.mPrivate, header.Private());
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if (target.mIsVBR) {
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// Used to compute the average bitrate for VBR streams.
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bitrateSum += target.mBitrate;
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} else {
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EXPECT_EQ(target.mBitrate, header.Bitrate());
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}
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frameData = target.mDemuxer->DemuxSample();
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}
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// TODO: find reference number which accounts for trailing headers.
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// EXPECT_EQ(target.mNumSamples / target.mSamplesPerFrame, numFrames);
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// EXPECT_EQ(target.mNumSamples, numSamples);
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// There may be trailing headers which we don't parse, so the stream length
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// is the upper bound.
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if (target.mFileSize > 0) {
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EXPECT_GE(target.mFileSize, parsedLength);
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}
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if (target.mIsVBR) {
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ASSERT_TRUE(numFrames);
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EXPECT_EQ(target.mBitrate, static_cast<int32_t>(bitrateSum / numFrames));
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}
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}
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}
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TEST_F(MP3DemuxerTest, Duration) {
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for (const auto& target: mTargets) {
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nsRefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frameData);
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EXPECT_EQ(target.mFileSize, target.mDemuxer->StreamLength());
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while (frameData) {
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EXPECT_NEAR(target.mDuration, target.mDemuxer->Duration().ToMicroseconds(),
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target.mDurationError * target.mDuration);
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frameData = target.mDemuxer->DemuxSample();
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}
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}
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}
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TEST_F(MP3DemuxerTest, Seek) {
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using media::TimeUnit;
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for (const auto& target: mTargets) {
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nsRefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frameData);
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const int64_t seekTime = TimeUnit::FromSeconds(1).ToMicroseconds();
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int64_t pos = target.mDemuxer->SeekPosition().ToMicroseconds();
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while (frameData) {
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EXPECT_NEAR(pos, target.mDemuxer->SeekPosition().ToMicroseconds(),
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target.mSeekError * pos);
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pos += seekTime;
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target.mDemuxer->Seek(TimeUnit::FromMicroseconds(pos));
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frameData = target.mDemuxer->DemuxSample();
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}
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}
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// Seeking should work with in-between resets, too.
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for (const auto& target: mTargets) {
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target.mDemuxer->Reset();
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nsRefPtr<MediaRawData> frameData(target.mDemuxer->DemuxSample());
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ASSERT_TRUE(frameData);
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const int64_t seekTime = TimeUnit::FromSeconds(1).ToMicroseconds();
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int64_t pos = target.mDemuxer->SeekPosition().ToMicroseconds();
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while (frameData) {
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EXPECT_NEAR(pos, target.mDemuxer->SeekPosition().ToMicroseconds(),
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target.mSeekError * pos);
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pos += seekTime;
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target.mDemuxer->Reset();
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target.mDemuxer->Seek(TimeUnit::FromMicroseconds(pos));
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frameData = target.mDemuxer->DemuxSample();
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}
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}
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}
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