DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (d38398e5144e)

VCS Links

AudioConfig

AudioInfo

Channel

ChannelLayout

EncryptionInfo

InitData

MediaInfo

MetadataTag

Rotation

SampleFormat

TrackInfo

TrackInfoSharedPtr

TrackType

VideoInfo

Macros

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#if !defined(MediaInfo_h)
#define MediaInfo_h

#include "mozilla/UniquePtr.h"
#include "nsRect.h"
#include "mozilla/RefPtr.h"
#include "nsSize.h"
#include "nsString.h"
#include "nsTArray.h"
#include "ImageTypes.h"
#include "MediaData.h"
#include "StreamTracks.h" // for TrackID
#include "TimeUnits.h"

namespace mozilla {

class AudioInfo;
class VideoInfo;
class TextInfo;

class MetadataTag
{
public:
  MetadataTag(const nsACString& aKey,
              const nsACString& aValue)
    : mKey(aKey)
    , mValue(aValue)
  {
  }
  nsCString mKey;
  nsCString mValue;
};

  // Maximum channel number we can currently handle (7.1)
#define MAX_AUDIO_CHANNELS 8

class TrackInfo
{
public:
  enum TrackType
  {
    kUndefinedTrack,
    kAudioTrack,
    kVideoTrack,
    kTextTrack
  };
  TrackInfo(TrackType aType,
            const nsAString& aId,
            const nsAString& aKind,
            const nsAString& aLabel,
            const nsAString& aLanguage,
            bool aEnabled,
            TrackID aTrackId)
    : mId(aId)
    , mKind(aKind)
    , mLabel(aLabel)
    , mLanguage(aLanguage)
    , mEnabled(aEnabled)
    , mTrackId(aTrackId)
    , mDuration(0)
    , mMediaTime(0)
    , mIsRenderedExternally(false)
    , mType(aType)
  {
    MOZ_COUNT_CTOR(TrackInfo);
  }

  // Only used for backward compatibility. Do not use in new code.
  void Init(const nsAString& aId,
            const nsAString& aKind,
            const nsAString& aLabel,
            const nsAString& aLanguage,
            bool aEnabled)
  {
    mId = aId;
    mKind = aKind;
    mLabel = aLabel;
    mLanguage = aLanguage;
    mEnabled = aEnabled;
  }

  // Fields common with MediaTrack object.
  nsString mId;
  nsString mKind;
  nsString mLabel;
  nsString mLanguage;
  bool mEnabled;

  TrackID mTrackId;

  nsCString mMimeType;
  int64_t mDuration;
  int64_t mMediaTime;
  CryptoTrack mCrypto;

  nsTArray<MetadataTag> mTags;

  // True if the track is gonna be (decrypted)/decoded and
  // rendered directly by non-gecko components.
  bool mIsRenderedExternally;

  virtual AudioInfo* GetAsAudioInfo()
  {
    return nullptr;
  }
  virtual VideoInfo* GetAsVideoInfo()
  {
    return nullptr;
  }
  virtual TextInfo* GetAsTextInfo()
  {
    return nullptr;
  }
  virtual const AudioInfo* GetAsAudioInfo() const
  {
    return nullptr;
  }
  virtual const VideoInfo* GetAsVideoInfo() const
  {
    return nullptr;
  }
  virtual const TextInfo* GetAsTextInfo() const
  {
    return nullptr;
  }

  bool IsAudio() const
  {
    return !!GetAsAudioInfo();
  }
  bool IsVideo() const
  {
    return !!GetAsVideoInfo();
  }
  bool IsText() const
  {
    return !!GetAsTextInfo();
  }
  TrackType GetType() const
  {
    return mType;
  }

  bool virtual IsValid() const = 0;

  virtual UniquePtr<TrackInfo> Clone() const = 0;

  virtual ~TrackInfo()
  {
    MOZ_COUNT_DTOR(TrackInfo);
  }

protected:
  TrackInfo(const TrackInfo& aOther)
  {
    mId = aOther.mId;
    mKind = aOther.mKind;
    mLabel = aOther.mLabel;
    mLanguage = aOther.mLanguage;
    mEnabled = aOther.mEnabled;
    mTrackId = aOther.mTrackId;
    mMimeType = aOther.mMimeType;
    mDuration = aOther.mDuration;
    mMediaTime = aOther.mMediaTime;
    mCrypto = aOther.mCrypto;
    mIsRenderedExternally = aOther.mIsRenderedExternally;
    mType = aOther.mType;
    mTags = aOther.mTags;
    MOZ_COUNT_CTOR(TrackInfo);
  }

private:
  TrackType mType;
};

// String version of track type. Don't use with kUndefinedTrack.
const char* TrackTypeToStr(TrackInfo::TrackType aTrack);

// Stores info relevant to presenting media frames.
class VideoInfo : public TrackInfo
{
public:
  enum Rotation
  {
    kDegree_0 = 0,
    kDegree_90 = 90,
    kDegree_180 = 180,
    kDegree_270 = 270,
  };
  VideoInfo()
    : VideoInfo(-1, -1)
  {
  }

  explicit VideoInfo(int32_t aWidth, int32_t aHeight)
    : VideoInfo(nsIntSize(aWidth, aHeight))
  {
  }

  explicit VideoInfo(const nsIntSize& aSize)
    : TrackInfo(kVideoTrack, NS_LITERAL_STRING("2"), NS_LITERAL_STRING("main"),
                EmptyString(), EmptyString(), true, 2)
    , mDisplay(aSize)
    , mStereoMode(StereoMode::MONO)
    , mImage(aSize)
    , mCodecSpecificConfig(new MediaByteBuffer)
    , mExtraData(new MediaByteBuffer)
    , mRotation(kDegree_0)
    , mImageRect(nsIntRect(nsIntPoint(), aSize))
  {
  }

  VideoInfo(const VideoInfo& aOther)
    : TrackInfo(aOther)
    , mDisplay(aOther.mDisplay)
    , mStereoMode(aOther.mStereoMode)
    , mImage(aOther.mImage)
    , mCodecSpecificConfig(aOther.mCodecSpecificConfig)
    , mExtraData(aOther.mExtraData)
    , mRotation(aOther.mRotation)
    , mImageRect(aOther.mImageRect)
    , mAlphaPresent(aOther.mAlphaPresent)
  {
  }

  bool IsValid() const override
  {
    return mDisplay.width > 0 && mDisplay.height > 0;
  }

  VideoInfo* GetAsVideoInfo() override
  {
    return this;
  }

  const VideoInfo* GetAsVideoInfo() const override
  {
    return this;
  }

  UniquePtr<TrackInfo> Clone() const override
  {
    return MakeUnique<VideoInfo>(*this);
  }

  void SetAlpha(bool aAlphaPresent)
  {
    mAlphaPresent = aAlphaPresent;
  }

  bool HasAlpha() const
  {
    return mAlphaPresent;
  }

  nsIntRect ImageRect() const
  {
    if (mImageRect.width < 0 || mImageRect.height < 0) {
      return nsIntRect(0, 0, mImage.width, mImage.height);
    }
    return mImageRect;
  }

  void SetImageRect(const nsIntRect& aRect)
  {
    mImageRect = aRect;
  }

  // Returned the crop rectangle scaled to aWidth/aHeight size relative to
  // mImage size.
  // If aWidth and aHeight are identical to the original mImage.width/mImage.height
  // then the scaling ratio will be 1.
  // This is used for when the frame size is different from what the container
  // reports. This is legal in WebM, and we will preserve the ratio of the crop
  // rectangle as it was reported relative to the picture size reported by the
  // container.
  nsIntRect ScaledImageRect(int64_t aWidth, int64_t aHeight) const
  {
    if ((aWidth == mImage.width && aHeight == mImage.height)
        || !mImage.width
        || !mImage.height) {
      return ImageRect();
    }
    nsIntRect imageRect = ImageRect();
    imageRect.x = (imageRect.x * aWidth) / mImage.width;
    imageRect.y = (imageRect.y * aHeight) / mImage.height;
    imageRect.width = (aWidth * imageRect.width) / mImage.width;
    imageRect.height = (aHeight * imageRect.height) / mImage.height;
    return imageRect;
  }

  Rotation ToSupportedRotation(int32_t aDegree)
  {
    switch (aDegree) {
      case 90:
        return kDegree_90;
      case 180:
        return kDegree_180;
      case 270:
        return kDegree_270;
      default:
        NS_WARNING_ASSERTION(aDegree == 0, "Invalid rotation degree, ignored");
        return kDegree_0;
    }
  }

  // Size in pixels at which the video is rendered. This is after it has
  // been scaled by its aspect ratio.
  nsIntSize mDisplay;

  // Indicates the frame layout for single track stereo videos.
  StereoMode mStereoMode;

  // Size of the decoded video's image.
  nsIntSize mImage;

  RefPtr<MediaByteBuffer> mCodecSpecificConfig;
  RefPtr<MediaByteBuffer> mExtraData;

  // Describing how many degrees video frames should be rotated in clock-wise to
  // get correct view.
  Rotation mRotation;

private:
  // mImage may be cropped; currently only used with the WebM container.
  // A negative width or height indicate that no cropping is to occur.
  nsIntRect mImageRect;

  // Indicates whether or not frames may contain alpha information.
  bool mAlphaPresent = false;
};

class AudioInfo : public TrackInfo
{
public:
  AudioInfo()
    : TrackInfo(kAudioTrack, NS_LITERAL_STRING("1"), NS_LITERAL_STRING("main"),
                EmptyString(), EmptyString(), true, 1)
    , mRate(0)
    , mChannels(0)
    , mBitDepth(0)
    , mProfile(0)
    , mExtendedProfile(0)
    , mCodecSpecificConfig(new MediaByteBuffer)
    , mExtraData(new MediaByteBuffer)
  {
  }

  AudioInfo(const AudioInfo& aOther)
    : TrackInfo(aOther)
    , mRate(aOther.mRate)
    , mChannels(aOther.mChannels)
    , mBitDepth(aOther.mBitDepth)
    , mProfile(aOther.mProfile)
    , mExtendedProfile(aOther.mExtendedProfile)
    , mCodecSpecificConfig(aOther.mCodecSpecificConfig)
    , mExtraData(aOther.mExtraData)
  {
  }

  static const uint32_t MAX_RATE = 640000;

  bool IsValid() const override
  {
    return mChannels > 0 && mChannels <= MAX_AUDIO_CHANNELS
           && mRate > 0 && mRate <= MAX_RATE;
  }

  AudioInfo* GetAsAudioInfo() override
  {
    return this;
  }

  const AudioInfo* GetAsAudioInfo() const override
  {
    return this;
  }

  UniquePtr<TrackInfo> Clone() const override
  {
    return MakeUnique<AudioInfo>(*this);
  }

  // Sample rate.
  uint32_t mRate;

  // Number of audio channels.
  uint32_t mChannels;

  // Bits per sample.
  uint32_t mBitDepth;

  // Codec profile.
  int8_t mProfile;

  // Extended codec profile.
  int8_t mExtendedProfile;

  RefPtr<MediaByteBuffer> mCodecSpecificConfig;
  RefPtr<MediaByteBuffer> mExtraData;
};

class EncryptionInfo
{
public:
  EncryptionInfo()
    : mEncrypted(false)
  {
  }

  struct InitData
  {
    template<typename AInitDatas>
    InitData(const nsAString& aType, AInitDatas&& aInitData)
      : mType(aType)
      , mInitData(Forward<AInitDatas>(aInitData))
    {
    }

    // Encryption type to be passed to JS. Usually `cenc'.
    nsString mType;

    // Encryption data.
    nsTArray<uint8_t> mInitData;
  };
  typedef nsTArray<InitData> InitDatas;

  // True if the stream has encryption metadata
  bool IsEncrypted() const
  {
    return mEncrypted;
  }

  void Reset()
  {
    mEncrypted = false;
    mInitDatas.Clear();
  }

  template<typename AInitDatas>
  void AddInitData(const nsAString& aType, AInitDatas&& aInitData)
  {
    mInitDatas.AppendElement(InitData(aType, Forward<AInitDatas>(aInitData)));
    mEncrypted = true;
  }

  void AddInitData(const EncryptionInfo& aInfo)
  {
    mInitDatas.AppendElements(aInfo.mInitDatas);
    mEncrypted = !!mInitDatas.Length();
  }

  // One 'InitData' per encrypted buffer.
  InitDatas mInitDatas;
private:
  bool mEncrypted;
};

class MediaInfo
{
public:
  bool HasVideo() const
  {
    return mVideo.IsValid();
  }

  void EnableVideo()
  {
    if (HasVideo()) {
      return;
    }
    // Set dummy values so that HasVideo() will return true;
    // See VideoInfo::IsValid()
    mVideo.mDisplay = nsIntSize(1, 1);
  }

  bool HasAudio() const
  {
    return mAudio.IsValid();
  }

  void EnableAudio()
  {
    if (HasAudio()) {
      return;
    }
    // Set dummy values so that HasAudio() will return true;
    // See AudioInfo::IsValid()
    mAudio.mChannels = 2;
    mAudio.mRate = 44100;
  }

  bool IsEncrypted() const
  {
    return (HasAudio() && mAudio.mCrypto.mValid)
           || (HasVideo() && mVideo.mCrypto.mValid);
  }

  bool HasValidMedia() const
  {
    return HasVideo() || HasAudio();
  }

  void AssertValid() const
  {
    NS_ASSERTION(!HasAudio() || mAudio.mTrackId != TRACK_INVALID,
                 "Audio track ID must be valid");
    NS_ASSERTION(!HasVideo() || mVideo.mTrackId != TRACK_INVALID,
                 "Audio track ID must be valid");
    NS_ASSERTION(!HasAudio()
                 || !HasVideo()
                 || mAudio.mTrackId != mVideo.mTrackId,
                 "Duplicate track IDs");
  }

  // TODO: Store VideoInfo and AudioIndo in arrays to support multi-tracks.
  VideoInfo mVideo;
  AudioInfo mAudio;

  // If the metadata includes a duration, we store it here.
  media::NullableTimeUnit mMetadataDuration;

  // The Ogg reader tries to kinda-sorta compute the duration by seeking to the
  // end and determining the timestamp of the last frame. This isn't useful as
  // a duration until we know the start time, so we need to track it separately.
  media::NullableTimeUnit mUnadjustedMetadataEndTime;

  // True if the media is seekable (i.e. supports random access).
  bool mMediaSeekable = true;

  // True if the media is only seekable within its buffered ranges.
  bool mMediaSeekableOnlyInBufferedRanges = false;

  EncryptionInfo mCrypto;

  // The minimum of start times of audio and video tracks.
  // Use to map the zero time on the media timeline to the first frame.
  media::TimeUnit mStartTime;
};

class TrackInfoSharedPtr
{
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TrackInfoSharedPtr)
public:
  TrackInfoSharedPtr(const TrackInfo& aOriginal, uint32_t aStreamID)
    : mInfo(aOriginal.Clone())
    , mStreamSourceID(aStreamID)
    , mMimeType(mInfo->mMimeType)
  {
  }

  uint32_t GetID() const
  {
    return mStreamSourceID;
  }

  operator const TrackInfo*() const
  {
    return mInfo.get();
  }

  const TrackInfo* operator*() const
  {
    return mInfo.get();
  }

  const TrackInfo* operator->() const
  {
    MOZ_ASSERT(mInfo.get(), "dereferencing a UniquePtr containing nullptr");
    return mInfo.get();
  }

  const AudioInfo* GetAsAudioInfo() const
  {
    return mInfo ? mInfo->GetAsAudioInfo() : nullptr;
  }

  const VideoInfo* GetAsVideoInfo() const
  {
    return mInfo ? mInfo->GetAsVideoInfo() : nullptr;
  }

  const TextInfo* GetAsTextInfo() const
  {
    return mInfo ? mInfo->GetAsTextInfo() : nullptr;
  }

private:
  ~TrackInfoSharedPtr() { }
  UniquePtr<TrackInfo> mInfo;
  // A unique ID, guaranteed to change when changing streams.
  uint32_t mStreamSourceID;

public:
  const nsCString& mMimeType;
};

class AudioConfig
{
public:
  enum Channel
  {
    CHANNEL_INVALID = -1,
    CHANNEL_MONO = 0,
    CHANNEL_LEFT,
    CHANNEL_RIGHT,
    CHANNEL_CENTER,
    CHANNEL_LS,
    CHANNEL_RS,
    CHANNEL_RLS,
    CHANNEL_RCENTER,
    CHANNEL_RRS,
    CHANNEL_LFE,
  };

  class ChannelLayout
  {
  public:
    ChannelLayout() : mChannelMap(0), mValid(false) { }
    explicit ChannelLayout(uint32_t aChannels)
      : ChannelLayout(aChannels, SMPTEDefault(aChannels))
    {
    }
    ChannelLayout(uint32_t aChannels, const Channel* aConfig)
      : ChannelLayout()
    {
      if (!aConfig) {
        mValid = false;
        return;
      }
      mChannels.AppendElements(aConfig, aChannels);
      UpdateChannelMap();
    }
    bool operator==(const ChannelLayout& aOther) const
    {
      return mChannels == aOther.mChannels;
    }
    bool operator!=(const ChannelLayout& aOther) const
    {
      return mChannels != aOther.mChannels;
    }
    const Channel& operator[](uint32_t aIndex) const
    {
      return mChannels[aIndex];
    }
    uint32_t Count() const
    {
      return mChannels.Length();
    }
    uint32_t Map() const
    {
      return mChannelMap;
    }
    // Calculate the mapping table from the current layout to aOther such that
    // one can easily go from one layout to the other by doing:
    // out[channel] = in[map[channel]].
    // Returns true if the reordering is possible or false otherwise.
    // If true, then aMap, if set, will be updated to contain the mapping table
    // allowing conversion from the current layout to aOther.
    // If aMap is nullptr, then MappingTable can be used to simply determine if
    // the current layout can be easily reordered to aOther.
    // aMap must be an array of size MAX_AUDIO_CHANNELS.
    bool MappingTable(const ChannelLayout& aOther, uint8_t* aMap = nullptr) const;
    bool IsValid() const { return mValid; }
    bool HasChannel(Channel aChannel) const
    {
      return mChannelMap & (1 << aChannel);
    }
  private:
    void UpdateChannelMap();
    const Channel* SMPTEDefault(uint32_t aChannels) const;
    AutoTArray<Channel, MAX_AUDIO_CHANNELS> mChannels;
    uint32_t mChannelMap;
    bool mValid;
  };

  enum SampleFormat
  {
    FORMAT_NONE = 0,
    FORMAT_U8,
    FORMAT_S16,
    FORMAT_S24LSB,
    FORMAT_S24,
    FORMAT_S32,
    FORMAT_FLT,
#if defined(MOZ_SAMPLE_TYPE_FLOAT32)
    FORMAT_DEFAULT = FORMAT_FLT
#elif defined(MOZ_SAMPLE_TYPE_S16)
    FORMAT_DEFAULT = FORMAT_S16
#else
#error "Not supported audio type"
#endif
  };

  AudioConfig(const ChannelLayout& aChannelLayout, uint32_t aRate,
              AudioConfig::SampleFormat aFormat = FORMAT_DEFAULT,
              bool aInterleaved = true);
  // Will create a channel configuration from default SMPTE ordering.
  AudioConfig(uint32_t aChannels, uint32_t aRate,
              AudioConfig::SampleFormat aFormat = FORMAT_DEFAULT,
              bool aInterleaved = true);

  const ChannelLayout& Layout() const
  {
    return mChannelLayout;
  }
  uint32_t Channels() const
  {
    if (!mChannelLayout.IsValid()) {
      return mChannels;
    }
    return mChannelLayout.Count();
  }
  uint32_t Rate() const
  {
    return mRate;
  }
  SampleFormat Format() const
  {
    return mFormat;
  }
  bool Interleaved() const
  {
    return mInterleaved;
  }
  bool operator==(const AudioConfig& aOther) const
  {
    return mChannelLayout == aOther.mChannelLayout
      && mRate == aOther.mRate
      && mFormat == aOther.mFormat
      && mInterleaved == aOther.mInterleaved;
  }
  bool operator!=(const AudioConfig& aOther) const
  {
    return !(*this == aOther);
  }

  bool IsValid() const
  {
    return mChannelLayout.IsValid() && Format() != FORMAT_NONE && Rate() > 0;
  }

  static const char* FormatToString(SampleFormat aFormat);
  static uint32_t SampleSize(SampleFormat aFormat);
  static uint32_t FormatToBits(SampleFormat aFormat);

private:
  // Channels configuration.
  ChannelLayout mChannelLayout;

  // Channel count.
  uint32_t mChannels;

  // Sample rate.
  uint32_t mRate;

  // Sample format.
  SampleFormat mFormat;

  bool mInterleaved;
};

} // namespace mozilla

#endif // MediaInfo_h