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AAC)
USAC
Support for mono/stereo content with standard sampling
rates from 7.35 to 48 kHz.
MPEG-4
(.mp4,
.m4a)
LATM/LOAS
(.loas, .xhe)
AMR-NB 4.75 to 12.2 kbps sampled @ 8 kHz 3GPP (.3gp)
AMR-WB 9 rates from 6.60 kbit/s to 23.85 kbit/s sampled @ 16 kHz
FLAC
Mono/Stereo (no multichannel). Sample rates up to 48
kHz (but up to 44.1 kHz is RECOMMENDED on devices
with 44.1 kHz output, as the 48 to 44.1 kHz downsampler
does not include a low-pass filter). 16-bit RECOMMENDED;
no dither applied for 24-bit.
FLAC (.flac) only
MP3
Mono/Stereo 8-320Kbps constant (CBR) or variable bitrate
(VBR)
MP3 (.mp3)
MIDI
MIDI Type 0 and 1. DLS Version 1 and 2. XMF and Mobile
XMF. Support for ringtone formats RTTTL/RTX, OTA, and
iMelody
Type 0 and 1 (.mid,
.xmf, .mxmf)
RTTTL/RTX (.rtttl,
.rtx)
OTA (.ota)
iMelody (.imy)
Vorbis
Ogg (.ogg)
Matroska (.mkv,
Android 4.0+)
PCM/WAVE
16-bit linear PCM (rates up to limit of hardware). Devices
MUST support sampling rates for raw PCM recording at
8000, 11025, 16000, and 44100 Hz frequencies.
WAVE (.wav)
Opus
Matroska (.mkv),
Ogg(.ogg)
5.1.4. Image Encoding
See more details in 5.1.6. Image Codecs Details .
Device implementations MUST support encoding the following image encoding:
[C-0-1] JPEG
[C-0-2] PNG
[C-0-3] WebP
5.1.5. Image Decoding
See more details in 5.1.6. Image Codecs Details .
Device implementations MUST support decoding the following image encoding:
[C-0-1] JPEG
[C-0-2] GIF
Page 55 of 132
Содержание
- Compatibility definition p.1
- Android 9 p.1
- Introduction p.2
- Handheld requirements p.2
- Document structure p.2
- Device types p.2
- Device configurations p.2
- Background restriction p.2
- Web compatibility p.2
- Automotive requirements p.2
- Watch requirements p.2
- Api namespaces p.2
- User interface compatibility p.2
- Api behavioral compatibility p.2
- Television requirements p.2
- Android library p.2
- Tablet requirements p.2
- Android extensions p.2
- Software p.2
- Soft api compatibility p.2
- Runtime compatibility p.2
- Native api compatibility p.2
- Managed api compatibility p.2
- Professional audio p.3
- Capture for unprocessed p.3
- Network protocols p.3
- Audio recording p.3
- Musical instrument digital interface midi p.3
- Audio playback p.3
- Multimedia compatibility p.3
- Audio latency p.3
- Media ui p.3
- Application packaging compatibility p.3
- Media codecs p.3
- Accessibility p.3
- Managed user support p.3
- Instant apps p.3
- Heavyweight apps p.3
- Hardware compatibility p.3
- Display and graphics p.3
- Video encoding p.3
- Device administration p.3
- Video decoding p.3
- Developer tools and options compatibility p.3
- Tv input framework p.3
- Developer tools p.3
- Text to speech p.3
- Developer options p.3
- Secure media p.3
- Quick settings p.3
- Companion device pairing p.3
- Sensors p.4
- Pose sensor p.4
- Memory and storage p.4
- Input devices p.4
- Data connectivity p.4
- Cameras p.4
- Security model compatibility p.5
- Performance and power p.5
- Document changelog p.5
- Contact us p.5
- Updatable software p.5
- Software compatibility testing p.5
- Requirements by device type p.6
- Requirement id p.6
- Introduction p.6
- Document structure p.6
- Requirement id in section 2 p.7
- Hardware p.7
- Handheld requirements p.7
- Device types p.7
- Device configurations p.7
- Multimedia p.10
- Software p.11
- Performance and power p.12
- Television requirements p.13
- Security model p.13
- Hardware p.14
- Multimedia p.15
- Software p.16
- Performance and power p.17
- Watch requirements p.18
- Software p.18
- Multimedia p.18
- Hardware p.18
- Performance and power p.19
- Hardware p.19
- Automotive requirements p.19
- Software p.22
- Multimedia p.22
- Performance and power p.23
- Security model p.24
- Hardware p.24
- Tablet requirements p.24
- Software p.24
- Managed api compatibility p.25
- Android library p.25
- Android extensions p.25
- Soft api compatibility p.26
- Permissions p.26
- Build parameters p.26
- Intent compatibility p.29
- Activities on secondary displays p.31
- Application binary interfaces p.32
- Native api compatibility p.32
- Bit arm native code compatibility p.33
- Webview compatibility p.34
- Web compatibility p.34
- Browser compatibility p.34
- Api behavioral compatibility p.35
- Background restriction p.36
- Api namespaces p.36
- Runtime compatibility p.37
- User interface compatibility p.39
- Launcher home screen p.39
- Widgets p.40
- Notifications p.40
- Search p.42
- Alerts and toasts p.42
- Themes p.43
- Live wallpapers p.43
- Lock screen media control p.44
- Input management p.44
- Activity switching p.44
- Location p.45
- Unicode and font p.45
- Screen savers previously dreams p.45
- Multi windows p.45
- Display cutout p.46
- Device administration p.46
- Device provisioning p.47
- Managed profile support p.48
- Text to speech p.49
- Managed user support p.49
- Accessibility p.49
- Tv input framework p.50
- Quick settings p.50
- Media ui p.50
- Instant apps p.50
- Companion device pairing p.51
- Application packaging compatibility p.51
- Heavyweight apps p.51
- Multimedia compatibility p.52
- Media codecs p.53
- Audio encoding p.53
- Audio decoding p.53
- Audio codecs details p.54
- Image encoding p.55
- Image decoding p.55
- Video codecs list p.56
- Video codecs p.56
- Image codecs details p.56
- Video encoding p.57
- Video decoding p.59
- Mpeg 4 p.59
- Mpeg 2 p.59
- H 65 hevc p.60
- Raw audio capture p.61
- Audio recording p.61
- Capture for voice recognition p.62
- Capture for rerouting of playback p.62
- Raw audio playback p.63
- Audio playback p.63
- Audio output volume p.63
- Audio latency p.63
- Audio effects p.63
- Network protocols p.65
- Secure media p.66
- Professional audio p.66
- Musical instrument digital interface midi p.66
- Capture for unprocessed p.68
- Developer tools and options compatibility p.69
- Developer tools p.69
- Hardware compatibility p.71
- Display and graphics p.71
- Developer options p.71
- Screen configuration p.72
- Screen orientation p.74
- Display metrics p.74
- D and 3d graphics acceleration p.74
- Secondary displays p.77
- Screen technology p.77
- Legacy application compatibility mode p.77
- Non touch navigation p.78
- Navigation keys p.78
- Keyboard p.78
- Input devices p.78
- Touchscreen input p.79
- Fake touch input p.80
- Game controller support p.81
- Sensors p.82
- Remote control p.82
- Accelerometer p.83
- Magnetometer p.84
- Gyroscope p.86
- Thermometer p.87
- Photometer p.87
- Barometer p.87
- Proximity sensor p.88
- High fidelity sensors p.88
- Biometric sensors p.90
- Android automotive only sensors p.92
- Telephony p.93
- Pose sensor p.93
- Data connectivity p.93
- Ieee 802 1 wi fi p.94
- Bluetooth p.97
- Near field communications p.98
- Minimum network capability p.100
- Sync settings p.101
- Secure elements p.101
- Rear facing camera p.101
- Data saver p.101
- Cameras p.101
- Front facing camera p.102
- External camera p.103
- Camera api behavior p.103
- Memory and storage p.104
- Camera orientation p.104
- Minimum memory and storage p.105
- Application shared storage p.105
- Usb peripheral mode p.106
- Adoptable storage p.106
- Usb host mode p.107
- Microphone p.108
- Audio output p.108
- Near ultrasound p.109
- Virtual reality mode high performance p.110
- Virtual reality mode p.110
- Virtual reality p.110
- User experience consistency p.112
- Power saving modes p.112
- Performance and power p.112
- File i o access performance p.112
- Power consumption accounting p.113
- Consistent performance p.113
- Permissions p.114
- Security model compatibility p.114
- Uid and process isolation p.115
- Filesystem permissions p.115
- Multi user support p.116
- Alternate execution environments p.116
- Security features p.117
- Premium sms warning p.117
- Usage history p.119
- Recording p.119
- Privacy p.119
- Network traffic p.120
- Data storage encryption p.120
- Connectivity p.120
- File based encryption p.121
- Direct boot p.121
- Device integrity p.122
- Full disk encryption p.122
- Keys and credentials p.123
- Secure lock screen p.124
- Strongbox p.127
- Safe boot mode p.128
- Data deletion p.128
- Subscription plans p.129
- Software compatibility testing p.129
- Compatibility test suite p.129
- Automotive vehicle system isolation p.129
- Updatable software p.130
- Cts verifier p.130
- Document changelog p.131
- Changelog viewing tips p.131
- Contact us p.132
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