The Tor Browser: content/media/encoder/fmp4_muxer/ISOTrackMetadata.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     4  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef ISOTrackMetadata_h_

     7 #define ISOTrackMetadata_h_

     9 #include "TrackMetadataBase.h"

    11 namespace mozilla {

    13 class AACTrackMetadata : public AudioTrackMetadata {

    14 public:

    15   // AudioTrackMetadata members

    16   uint32_t GetAudioFrameDuration() MOZ_OVERRIDE { return mFrameDuration; }

    17   uint32_t GetAudioFrameSize() MOZ_OVERRIDE { return mFrameSize; }

    18   uint32_t GetAudioSampleRate() MOZ_OVERRIDE { return mSampleRate; }

    19   uint32_t GetAudioChannels() MOZ_OVERRIDE { return mChannels; }

    21   // TrackMetadataBase member

    22   MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AAC; }

    24   // AACTrackMetadata members

    25   AACTrackMetadata()

    26     : mSampleRate(0)

    27     , mFrameDuration(0)

    28     , mFrameSize(0)

    29     , mChannels(0) {

    30     MOZ_COUNT_CTOR(AACTrackMetadata);

    31   }

    32   ~AACTrackMetadata() { MOZ_COUNT_DTOR(AACTrackMetadata); }

    34   uint32_t mSampleRate;     // From 14496-3 table 1.16, it could be 7350 ~ 96000.

    35   uint32_t mFrameDuration;  // Audio frame duration based on SampleRate.

    36   uint32_t mFrameSize;      // Audio frame size, 0 is variant size.

    37   uint32_t mChannels;       // Channel number, it should be 1 or 2.

    38 };

    40 // AVC clock rate is 90k Hz.

    41 #define AVC_CLOCK_RATE 90000

    43 class AVCTrackMetadata : public VideoTrackMetadata {

    44 public:

    45   // VideoTrackMetadata members

    46   uint32_t GetVideoHeight() MOZ_OVERRIDE { return mHeight; }

    47   uint32_t GetVideoWidth() MOZ_OVERRIDE {return mWidth; }

    48   uint32_t GetVideoDisplayHeight() MOZ_OVERRIDE { return mDisplayHeight; }

    49   uint32_t GetVideoDisplayWidth() MOZ_OVERRIDE { return mDisplayWidth;  }

    50   uint32_t GetVideoClockRate() MOZ_OVERRIDE { return AVC_CLOCK_RATE; }

    51   uint32_t GetVideoFrameRate() MOZ_OVERRIDE { return mFrameRate; }

    53   // TrackMetadataBase member

    54   MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AVC; }

    56   // AVCTrackMetadata

    57   AVCTrackMetadata()

    58     : mHeight(0)

    59     , mWidth(0)

    60     , mDisplayHeight(0)

    61     , mDisplayWidth(0)

    62     , mFrameRate(0) {

    63     MOZ_COUNT_CTOR(AVCTrackMetadata);

    64   }

    65   ~AVCTrackMetadata() { MOZ_COUNT_DTOR(AVCTrackMetadata); }

    67   uint32_t mHeight;

    68   uint32_t mWidth;

    69   uint32_t mDisplayHeight;

    70   uint32_t mDisplayWidth;

    71   uint32_t mFrameRate;       // frames per second

    72 };

    75 // AMR sample rate is 8000 samples/s.

    76 #define AMR_SAMPLE_RATE 8000

    78 // Channel number is always 1.

    79 #define AMR_CHANNELS    1

    81 // AMR speech codec, 3GPP TS 26.071. Encoder and continer support AMR-NB only

    82 // currently.

    83 class AMRTrackMetadata : public AudioTrackMetadata {

    84 public:

    85   // AudioTrackMetadata members

    86   //

    87   // The number of sample sets generates by encoder is variant. So the

    88   // frame duration and frame size are both 0.

    89   uint32_t GetAudioFrameDuration() MOZ_OVERRIDE { return 0; }

    90   uint32_t GetAudioFrameSize() MOZ_OVERRIDE { return 0; }

    91   uint32_t GetAudioSampleRate() MOZ_OVERRIDE { return AMR_SAMPLE_RATE; }

    92   uint32_t GetAudioChannels() MOZ_OVERRIDE { return AMR_CHANNELS; }

    94   // TrackMetadataBase member

    95   MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_AMR; }

    97   // AMRTrackMetadata members

    98   AMRTrackMetadata() { MOZ_COUNT_CTOR(AMRTrackMetadata); }

    99   ~AMRTrackMetadata() { MOZ_COUNT_DTOR(AMRTrackMetadata); }

   100 };

   102 }

   104 #endif // ISOTrackMetadata_h_

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