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  • Codec: Opus

  • Format: S24_32LE

  • Channel: 2

  • Sampling rate: 48 kHz

  • Source: HDMI-Rx/ I2S-Rx

  • Render: HDMI-Tx/ I2S-Tx/ DP

Audio Deliverables:

Pipeline

Video-Input Source 

Audio Input Source

Video Output Type

Audio Output Type

ALSA Drivers

Resolution

Audio Codec Type

Audio Configuration

Video Codec Type

Deliverables

Record / Stream-Out pipeline

  1. HDMI-Rx

  2. MIPI-Rx

  1. HDMI-Rx

  2. I2S-Rx

File-Sink
Stream-Out

File-Sink
Stream-Out

HDMI-Rx ALSA drivers

4K / 1080p

Opus

2 channel @ 48 kHz

HEVC / AVC

HDMI-Rx Audio encode with soft codec and video with VCU and store it in a container format.

Playback pipeline

File Source/ Stream-In

File Source/ Stream-In

DP
HDMI –Tx

  1. HDMI-Tx

  2. I2S-Tx

  3. DP

HDMI-Tx ALSA drivers

4K / 1080p

Opus

2 channel @ 48 kHz

HEVC / AVC

Playback of the local-file / stream-in with video decoded using VCU and Audio using GStreamer soft codec.

Capture → Display

  1. HDMI-Rx

  2. MIPI-Rx

  1. HDMI-Rx

  2. I2S-Rx

DP
HDMI -Tx

  1. HDMI-Tx

  2. I2S-Tx

  3. DP

HDMI-Rx/Tx ALSA drivers

4K / 1080p

NA

2 channel @ 48 kHz

HEVC / AVC

HDMI-Rx Audio / Video pass to HDMI-Tx without VCU/Audio-Codec.

Capture → Encod → Decode → Display

  1. HDMI-Rx

  2. MIPI-Rx

  1. HDMI-Rx

  2. I2S-Rx

DP
HDMI -Tx

  1. HDMI-Tx

  2. I2S-Tx

  3. DP

HDMI-Rx/Tx ALSA drivers

4K / 1080p

NA

2 channel @ 48 kHz

HEVC / AVC

HDMI-Rx raw audio and video with VCU encoder and decode to achieve AV sync.

  • Supports 1-4Kp60 Single Stream with either HDMI-Rx or I2S-Rx as input Audio source + HDMI-Rx / MIPI Rx as input Video source; and HDMI-Tx / I2S-Tx as Output Audio Sink + HDMI-Tx / DP as Output Video sink pipeline

  • Supports 1-4Kp30 Single Stream with either HDMI-Rx or I2S-Rx as input Audio source + HDMI-Rx / MIPI Rx as input Video source; and HDMI-Tx / I2S-Tx as Output Audio Sink + HDMI-Tx / DP as Output Video sink pipeline

  • Supports 1-1080p60 Single Stream with either HDMI-Rx or I2S-Rx as input Audio source + HDMI-Rx / MIPI Rx as input Video source; and HDMI-Tx / I2S-Tx as Output Audio Sink + HDMI-Tx / DP as Output Video sink pipeline

  • Supports 2-4Kp30 multi-stream feature with HDMI-Rx and I2S-Rx as input Audio sources, with HDMI-Rx and MIPI Rx as an input Video sources;  and with HDMI-Tx and I2S-Tx as Output Audio Sink + HDMI-Tx as Output Video sink pipeline

  • Supports 2-1080p60 multi-stream feature with HDMI-Rx and I2S-Rx as input Audio sources with HDMI-Rx and MIPI Rx as an input Video sources; and with HDMI-Tx and I2S-Tx as Output Audio Sink + HDMI-Tx as Output Video sink pipeline

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The table below provides the supported resolution from GUI and command-line app in this design.

Resolution

GUI

Command Line

Single Stream

Single Stream

Multi-stream

4Kp60

X

NA

4Kp30

√ (Max 2)

1080p60

√ (Max 2)

√ - Supported
x – Not supported
NA – Not applicable

The below sections describe the HDMI / MIPI Video Capture and HDMI Display with the Audio from HDMI / I2S sources. It is VCU TRD design supporting HDMI-Rx audio/video + HDMI-Tx with Audio/video and MIPI-Rx video + I2S-Rx audio with HDMI-Tx video + I2S-Tx audio.

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The example configuration files are stored at /media/card/config/ folder.

Configuration Type

Configuration Name

Description

Available Options

Common

Common Configuration

It is the starting point of common configuration

Num of Input

Provide the number of inputs. This is 1 for single stream and 2 in case of Multi-stream.

1 to 2

Output

Select the video interface

HDMI or DP

Out Type

Type of output

display, record, stream

Display Rate

Pipeline frame rate

30 or 60 fps

Exit

It indicates to the application that the configuration is over

Input

Input Configuration

It is the starting point of the input configuration

Input Num

Starting Nth input configuration

1 to 2

Input Type

Input source type

HDMI, MIPI, File, Stream

Uri

File path or Network URL. Applicable for file playback and stream-in pipeline only. Supported file formats for playback are ts, mp4, and mkv.

file:///run/media/sda/abc.ts (for file path), udp://192.168.25.89:5004/ (for Network streaming, Here 192.168.25.89 is Client's IP address and 5004 is port number)

Raw

To tell the pipeline is processed or pass-through

True, False

Width

The width of the live source

3840, 1920

Height

The height of the live source

2160, 1080

Format

The format of input data

NV12

Enable SCD

Stream-based SCD supports with HDMI input source only and must be enabled; and with MIPI input source it must be disabled

True, False

Exit

It indicates to the application that the configuration is over

Encoder

Encoder Configuration

It is the starting point of encoder configuration

Encoder Num

Starting Nth encoder configuration

1 to 2

Encoder Name

Name of the encoder

AVC, HEVC

Profile

Name of the profile

AVC: baseline, main or high
HEVC: Main

Rate Control

Rate control options

CBR, VBR, and Low_Latency

Filler Data

Filler Data NAL units for CBR rate control

True, False

QP

QP control mode used by the VCU encoder

Uniform, Auto

L2 Cache

Enable or Disable L2Cache buffer in encoding process

True, False

Latency Mode

Encoder latency mode.

Normal, sub_frame

Low Bandwidth

If enabled, decrease the vertical search range used for P-frame motion estimation to reduce the bandwidth.

True, False

Gop Mode

Group of Pictures mode.

Basic, low_delay_p, low_delay_b

Bitrate

Target bitrate in Kbps

1-60000

B Frames

Number of B-frames between two consecutive P-frames

0-4

Slice

The number of slices produced for each frame. Each slice contains one or more complete macroblock/CTU row(s). Slices are distributed over the frame as regularly as possible. If slice-size is defined as well more slices may be produced to fit the slice-size requirement.

4-22 4Kp resolution with HEVC codec
4-32 4Kp resolution with AVC codec
4-32 1080p resolution with HEVC codec
4-32 1080p resolution with AVC codec

GoP Length

The distance between two consecutive I frames

1-1000

GDR Mode

It specifies which Gradual Decoder Refresh(GDR) scheme should be used when gop-mode = low_delay_p

GDR mode is currently supported with LLP1/LLP2 low-delay-p use-cases only

Horizontal, Vertical, Disabled

Entropy Mode

It specifies the entropy mode for H.264 (AVC) encoding process

CAVLC, CABAC, Default

Max Picture Size

It is used to curtail instantaneous peak in the bit-stream using this parameter. It works in CBR/VBR rate-control only. When it is enabled, max-picture-size value is calculated and set with 10% of AllowedPeakMargin. i.e. max-picture-size =  (TargetBitrate / FrameRate) * 1.1

It works in CBR/VBR rate-control only

True, False

Format

The format of input data

NV12

Preset

Based on provided six presets, predefined configuration will be set for encoder parameters. Select custom to provide user-specific options for encoder parameters.

HEVC_HIGH, HEVC_MEDIUM, HEVC_LOW, AVC_HIGH, AVC_MEDIUM, AVC_LOW, Custom

Exit

It indicates to the application that the configuration is over

Record

Record Configuration

It is the starting point of record configuration

Record Num

Starting Nth record configuration

1 to 2

Out-File Name

Record file path

See Mount Location for additional file paths

e.g. /run/media/sda/abc.ts

Duration

Duration in minutes

1-3

Exit

It indicates to the application that the configuration is over

Streaming

Streaming Configuration

It is the starting point of streaming configuration.

Streaming Num

Starting Nth Streaming configuration

1 to 2

Host IP

The host to send the packets to the client

192.168.25.89 or Windows PC IP

Port

The port to send the packets to port number

5004, 5006

Exit

It indicates to the application that the configuration is over.

Audio Configuration

Audio Configuration

It is the starting point of the audio configuration.

Audio Num

Starting Nth Audio configuration

1 to 2

Audio Enable

Enable or Disable audio in pipeline

True, False

Audio Format

The format of the audio

S24_32LE (for serial use-cases)

Sampling Rate

To set the audio sampling rate

48000

Num Of Channel

The number of audio channels

1-2

Source

To set audio input source

HDMI or I2S

Renderer

To set audio output device

HDMI, DP or I2S

Exit

It indicates to the application that the configuration is over

Trace

Trace Configuration

It is the starting point of trace configuration

FPS Info

To display achieved frame per second information on the console

True, False

APM Info

To display APM counter number on the console

True, False

Pipeline Info

To display pipeline info on console

True, False

Exit

It indicates to the application that the configuration is over

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4 Appendix B - HDMI-Rx/Tx Link-up and GStreamer Commands

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Code Block
$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 num-buffers=3600 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 ! video/x-h265, profile=main, alignment=au ! queue ! mux. alsasrc device=hw:2,1 provide-clock=false num-buffers=3600 ! audio/x-raw, format= S24_32LE, rate=48000, channels=2 ! queue ! audioconvert ! audioresample ! opusenc ! opusparse ! mpegtsmux name=mux ! filesink location = "/run/test.ts"

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Code Block
$ gst-launch-1.0 v4l2src device=/dev/video1 io-mode=4 num-buffers=3600 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 ! video/x-h265, profile=main, alignment=au ! queue ! mux. alsasrc device=hw:1,1 provide-clock=false num-buffers=3600 ! audio/x-raw, format= S24_32LE, rate=48000, channels=2 ! queue ! audioconvert ! audioresample ! opusenc ! opusparse ! mpegtsmux name=mux ! filesink location = "/run/test.ts"

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