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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/. */
#ifndef ISOTrackMetadata_h_
#define ISOTrackMetadata_h_
#include "TrackMetadataBase.h"
namespace mozilla {
class AACTrackMetadata : public AudioTrackMetadata {
public:
// AudioTrackMetadata members
uint32_t GetAudioFrameDuration() override { return mFrameDuration; }
uint32_t GetAudioFrameSize() override { return mFrameSize; }
uint32_t GetAudioSampleRate() override { return mSampleRate; }
uint32_t GetAudioChannels() override { return mChannels; }
// TrackMetadataBase member
MetadataKind GetKind() const override { return METADATA_AAC; }
// AACTrackMetadata members
AACTrackMetadata()
: mSampleRate(0)
, mFrameDuration(0)
, mFrameSize(0)
, mChannels(0) {
MOZ_COUNT_CTOR(AACTrackMetadata);
}
~AACTrackMetadata() { MOZ_COUNT_DTOR(AACTrackMetadata); }
uint32_t mSampleRate; // From 14496-3 table 1.16, it could be 7350 ~ 96000.
uint32_t mFrameDuration; // Audio frame duration based on SampleRate.
uint32_t mFrameSize; // Audio frame size, 0 is variant size.
uint32_t mChannels; // Channel number, it should be 1 or 2.
};
// AVC clock rate is 90k Hz.
#define AVC_CLOCK_RATE 90000
class AVCTrackMetadata : public VideoTrackMetadata {
public:
// VideoTrackMetadata members
uint32_t GetVideoHeight() override { return mHeight; }
uint32_t GetVideoWidth() override {return mWidth; }
uint32_t GetVideoDisplayHeight() override { return mDisplayHeight; }
uint32_t GetVideoDisplayWidth() override { return mDisplayWidth; }
uint32_t GetVideoClockRate() override { return AVC_CLOCK_RATE; }
uint32_t GetVideoFrameRate() override { return mFrameRate; }
// TrackMetadataBase member
MetadataKind GetKind() const override { return METADATA_AVC; }
// AVCTrackMetadata
AVCTrackMetadata()
: mHeight(0)
, mWidth(0)
, mDisplayHeight(0)
, mDisplayWidth(0)
, mFrameRate(0) {
MOZ_COUNT_CTOR(AVCTrackMetadata);
}
~AVCTrackMetadata() { MOZ_COUNT_DTOR(AVCTrackMetadata); }
uint32_t mHeight;
uint32_t mWidth;
uint32_t mDisplayHeight;
uint32_t mDisplayWidth;
uint32_t mFrameRate; // frames per second
};
// AMR sample rate is 8000 samples/s.
#define AMR_SAMPLE_RATE 8000
// Channel number is always 1.
#define AMR_CHANNELS 1
// AMR speech codec, 3GPP TS 26.071. Encoder and continer support AMR-NB only
// currently.
class AMRTrackMetadata : public AudioTrackMetadata {
public:
// AudioTrackMetadata members
//
// The number of sample sets generates by encoder is variant. So the
// frame duration and frame size are both 0.
uint32_t GetAudioFrameDuration() override { return 0; }
uint32_t GetAudioFrameSize() override { return 0; }
uint32_t GetAudioSampleRate() override { return AMR_SAMPLE_RATE; }
uint32_t GetAudioChannels() override { return AMR_CHANNELS; }
// TrackMetadataBase member
MetadataKind GetKind() const override { return METADATA_AMR; }
// AMRTrackMetadata members
AMRTrackMetadata() { MOZ_COUNT_CTOR(AMRTrackMetadata); }
~AMRTrackMetadata() { MOZ_COUNT_DTOR(AMRTrackMetadata); }
};
// EVRC sample rate is 8000 samples/s.
#define EVRC_SAMPLE_RATE 8000
class EVRCTrackMetadata : public AudioTrackMetadata {
public:
// AudioTrackMetadata members
//
// The number of sample sets generates by encoder is variant. So the
// frame duration and frame size are both 0.
uint32_t GetAudioFrameDuration() override { return 0; }
uint32_t GetAudioFrameSize() override { return 0; }
uint32_t GetAudioSampleRate() override { return EVRC_SAMPLE_RATE; }
uint32_t GetAudioChannels() override { return mChannels; }
// TrackMetadataBase member
MetadataKind GetKind() const override { return METADATA_EVRC; }
// EVRCTrackMetadata members
EVRCTrackMetadata()
: mChannels(0) {
MOZ_COUNT_CTOR(EVRCTrackMetadata);
}
~EVRCTrackMetadata() { MOZ_COUNT_DTOR(EVRCTrackMetadata); }
uint32_t mChannels; // Channel number, it should be 1 or 2.
};
}
#endif // ISOTrackMetadata_h_
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