the year of the linux video codec drivers
play

The Year of the Linux Video Codec Drivers Embedded Linux Conference - PowerPoint PPT Presentation

Sep 20, 2023 •23 likes •503 views

The Year of the Linux Video Codec Drivers Embedded Linux Conference 2017 Portland Laurent Pinchart laurent.pinchart@ideasonboard.com I have given many talks in conferences around the world. This one is special. During breakfast this morning I

  1. The Year of the Linux Video Codec Drivers Embedded Linux Conference 2017 Portland Laurent Pinchart laurent.pinchart@ideasonboard.com

  2. I have given many talks in conferences around the world. This one is special. During breakfast this morning I was reading the news, and what I read made me angry and sad. Sad that, in the 21st century, in a country where I have many friends, people who are supposed to be role models for all of us decide to discriminate between humans just for the sake of it. Before travelling to the ELC I have long hesitated on the attitude I needed to have in the face of the political turmoil of the last few months. This morning I decided to build action on top of the anger and that I simply couldn't condone the situation by staying silent. I thus want to dedicate this talk to all the people around the world who fight against discriminations of all kinds. If I could not join them on Monday when they rallied around the country, I want to show them my support and be part of the sea of pink that started marching on January the 21st. For them all, I have colored all the slides of this presentation in pink.

  3. Video Encoding Stateful Codecs Stateless Codecs Next The Year of the Linux Video Codec Drivers

  4. 1010101111001011 0111000100101001 Video 0010101101011011 Decoder 1011101011000011 0111101000111100 Compressed Uncompressed Bitstream Frames Video Encoding

  5. 1010101111001011 0111000100101001 Video 0010101101011011 Encoder 1011101011000011 0111101000111100 Uncompressed Compressed Frames Bitstream Video Encoding

  6. 100011010110101010111011110101111110101101011111101001001101010101101 111000101110100011000101010011110111001011001100010100000001111101101 000110100010010010101100101110110001000111111111100001010001101110011 101010010001001000100011011010111001101001111110010101111001010010110 101111010010011000011001001010001010111001000110110001010011010001001 000010111100000110001001100101010000100000101011011001100011000100010 001110110001111000110101011001101001101000100011111101100111101001110 111001000000101101111011001111101110100000110110001001000101111001100 001101011000111111001111010010000100011000101101000101001000101111110 001000100110000111001000011011101111001011111010111111000100101111111 010111001011101001001110001111000010101011000010010010100101001101110 011101010000101000001000111010011001000110011111101010110000001110100 101111000001011111011001100000111101110111011001011111110000011001100 111110101001100010000011011111100110001110101110101000001010101101101 011100010100010011010110101001010011100111111000101010110001111111111 Video Encoding – Bitstream

  7. 100011010110101010111011110101111110101101011111101001001101010101101 111000101110100011000101010011110111001011001100010100000001111101101 000110100010010010101100101110110001000111111111100001010001101110011 101010010001001000100011011010111001101001111110010101111001010010110 101111010010011000011001001010001010111001000110110001010011010001001 000010111100000110001001100101010000100000101011011001100011000100010 001110110001111000110101011001101001101000100011111101100111101001110 111001000000101101111011001111101110100000110110001001000101111001100 001101011000111111001111010010000100011000101101000101001000101111110 001000100110000111001000011011101111001011111010111111000100101111111 010111001011101001001110001111000010101011000010010010100101001101110 011101010000101000001000111010011001000110011111101010110000001110100 101111000001011111011001100000111101110111011001011111110000011001100 111110101001100010000011011111100110001110101110101000001010101101101 011100010100010011010110101001010011100111111000101010110001111111111 Video Encoding – Bitstream

  8. 100011010110101010111011110101111110101101011111101001001101010101101 111000101110100011000101010011110111001011001100010100000001111101101 000110100010010010101100101110110001000111111111100001010001101110011 101010010001001000100011011010111001101001111110010101111001010010110 101111010010011000011001001010001010111001000110110001010011010001001 000010111100000110001001100101010000100000101011011001100011000100010 001110110001111000110101011001101001101000100011111101100111101001110 111001000000101101111011001111101110100000110110001001000101111001100 001101011000111111001111010010000100011000101101000101001000101111110 001000100110000111001000011011101111001011111010111111000100101111111 010111001011101001001110001111000010101011000010010010100101001101110 011101010000101000001000111010011001000110011111101010110000001110100 101111000001011111011001100000111101110111011001011111110000011001100 111110101001100010000011011111100110001110101110101000001010101101101 011100010100010011010110101001010011100111111000101010110001111111111 Video Encoding – Bitstream

  9. 00000001 000000010110101010111011110101111110101101011111101001001101010101101 111000101110100011000101010011110111001011001100010100000001111101101 000110100010010010101100101110110001000000000011100001010001101110011 00000001 101010010001001000100011011010111001101001111110010101111001010010110 101111010010011000011001001010001010111001000110110001010011010001001 000010111100000110001001100101010000100000101011011001100011000100010 00000001 001110110001111000110101011000000011101000100011111101100111101001110 111001000000101101111011001111101110100000110110001001000101111001100 001101011000111111001111010010000100011000101101000101001000101111110 001000100110000111001000011011101111001011111010111111000100101111111 010111001011101001001110001111000010101011000010010010100101001101110 00000001 011101010000101000001000111010011001000110011111101010110000000110100 101111000001011111011001100000111101110111011001011111110000011001100 111110101001100010000011011111100110001110101110101000001010101101101 011100010100010011010110101001010011100111111000101010110001111111111 Video Encoding – Bitstream

  10. 0001101111001011 0001 FW HW 0111000100101001 0010100001011011 0001 1011101011000011 HW HW 0111101000111100 Video Decoder Video Encoding – Decoder

  11. 00000001011010101011101111010111111010110101111110100100110101010110 00000001 000000010110101010111011110101111110101101011111101001001101010101101 011010101011101111 11110001011101000110001010100111101110010110011000101000000011111011 111000101110100011000101010011110111001011001100010100000001111101101 011010101011101111 01000110100010010010101100101110110001000000000011100001010001101110 000110100010010010101100101110110001000000000011100001010001101110011 00000001 01110101001000100100010001101101011100110100111111001010111100101001 101010010001001000100011011010111001101001111110010101111001010010110 01101011110100100110000110010010100010101110010001101100010100110100 101111010010011000011001001010001010111001000110110001010011010001001 01001000010111100000110001001100101010000100000101011011001100011000 000010111100000110001001100101010000100000101011011001100011000100010 00000001 01101010101110111 10001000111011000111100011010101100000010110100010001111110110011110 001110110001111000110101011000000101101000100011111101100111101001110 10011101110010000001011011110110011111011101000001101100010010001011 111001000000101101111011001111101110100000110110001001000101111001100 11001100001101011000111111001111010010000100011000101101000101001000 001101011000111111001111010010000100011000101101000101001000101111110 10111111000100010011000011100100001101110111100101111101011111100010 001000100110000111001000011011101111001011111010111111000100101111111 01011111110101110010111010010011100011110000101010110000100100101001 010111001011101001001110001111000010101011000010010010100101001101110 00000001 01100 01001101110011101010000101000001000111010011001000110011111101010110 011101010000101000001000111010011001000110011111101010110000000110100 00000011010010111100000101111101100110000011110111011101100101111111 101111000001011111011001100000111101110111011001011111110000011001100 01101010101110 00000110011001111101010011000100000110111111001100011101011101010000 111110101001100010000011011111100110001110101110101000001010101101101 01010101101101011100010100010011010110101001010011100111111000101010 011100010100010011010110101001010011100111111000101010110001111111111 Video Encoding – Decoder

  12. 0001 0001101111001011 0111000100101001 0010100001011011 0001 1011101011000011 Bitstream Controller Parser 0001011 0100100 0100010 0101110 000110111100101 101110001001010 Decoder 010010100001011 011101100111010 Video Encoding – Decoder

  13. Video Encoding Stateful Codecs Stateless Codecs Next The Year of the Linux Video Codec Drivers

  14. 0001 0001101111001011 0111000100101001 0010100001011011 0001 1011101011000011 HW Bitstream Controller Parser 0001011 0100100 0100010 0101110 000110111100101 101110001001010 Decoder 010010100001011 011101100111010 Stateful Decoder

  15. V4L2 API

  16. API

  17. Userspace Application /dev/video* V4L2 Driver V4L2

Download Presentation
Download Policy: The content available on the website is offered to you 'AS IS' for your personal information and use only. It cannot be commercialized, licensed, or distributed on other websites without prior consent from the author. To download a presentation, simply click this link. If you encounter any difficulties during the download process, it's possible that the publisher has removed the file from their server.

Recommend

Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a

Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a

Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a Transport Protocol Sadjad Fouladi, John Emmons, Emre Orbay, Catherine Wu, Riad S. Wahby, Keith Winstein https://snr.stanford.edu/salsify Internet video

1.36k views • 110 slides
Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a

Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a

Salsify: Low-Latency Network Video Through Tighter Integration Between a Video Codec and a Transport Protocol Sadjad Fouladi, John Emmons, Emre Orbay, Catherine Wu + , Riad S. Wahby, Keith Winstein Stanford University, + Saratoga High School

559 views • 53 slides
Linux Device Drivers Linux Device Drivers Kernel 2.6 1. Introduction Dr. Wolfgang Koch 2.

Linux Device Drivers Linux Device Drivers Kernel 2.6 1. Introduction Dr. Wolfgang Koch 2.

Linux Device Drivers Linux Device Drivers Kernel 2.6 1. Introduction Dr. Wolfgang Koch 2. Kernel Modules Friedrich Schiller University Jena 3. Char Drivers Department of Mathematics and 4. Advanced Char Drivers Computer Science 5.

531 views • 12 slides
NVIDIA VIDEO TECHNOLOGIES Abhijit Patait, 3/26/2018 NVIDIA Video Technologies Overview Video

NVIDIA VIDEO TECHNOLOGIES Abhijit Patait, 3/26/2018 NVIDIA Video Technologies Overview Video

NVIDIA VIDEO TECHNOLOGIES Abhijit Patait, 3/26/2018 NVIDIA Video Technologies Overview Video Codec SDK Updates AGENDA Perf/Quality Optimization Benchmarks Roadmap 2 NVIDIA VIDEO TECHNOLOGIES 3 Gamestream VIDEO CODEC SDK A comprehensive

743 views • 42 slides
Linux Device Drivers Linux Device Drivers Dr. Wolfgang Koch 1. Introduction Friedrich Schiller

Linux Device Drivers Linux Device Drivers Dr. Wolfgang Koch 1. Introduction Friedrich Schiller

Linux Device Drivers Linux Device Drivers Dr. Wolfgang Koch 1. Introduction Friedrich Schiller University Jena 2. Kernel Modules Department of Mathematics and 3. Char Drivers Computer Science 4. Advanced Char Drivers Jena, Germany 5.

529 views • 17 slides
Perceptually-Driven Video Coding with the Daala Video Codec Timothy B. Terriberry The Xiph.Org

Perceptually-Driven Video Coding with the Daala Video Codec Timothy B. Terriberry The Xiph.Org

Perceptually-Driven Video Coding with the Daala Video Codec Timothy B. Terriberry The Xiph.Org Foundation & The Mozilla Corporation Summary Daala is an attempt to completely avoid royalty- bearing technologies Used many

711 views • 21 slides
Anatomy of a Video Codec The inner workings of Ogg Theora Dr. Timothy B. Terriberry The Xiph.Org

Anatomy of a Video Codec The inner workings of Ogg Theora Dr. Timothy B. Terriberry The Xiph.Org

Anatomy of a Video Codec The inner workings of Ogg Theora Dr. Timothy B. Terriberry The Xiph.Org Foundation Outline Introduction Video Structure Motion Compensation The DCT Transform Quantization and Coding The Loop

1.01k views • 52 slides
Understanding Modern Device Drivers Why study device drivers? Linux drivers constitute ~5

Understanding Modern Device Drivers Why study device drivers? Linux drivers constitute ~5

3/6/12 Understanding Modern Device Drivers Why study device drivers? Linux drivers constitute ~5 million LOC and 70% of kernel Little exposure to this breadth of driver code from research Better understanding of drivers can lead to

484 views • 14 slides
The Daala Video Codec Project Next-next Generation Video Timothy B. Terriberry Mozilla & The

The Daala Video Codec Project Next-next Generation Video Timothy B. Terriberry Mozilla & The

The Daala Video Codec Project Next-next Generation Video Timothy B. Terriberry Mozilla & The Xiph.Org Foundation Patents are no longer a problem for free software We can all go home 2 Mozilla & The Xiph.Org Foundation

821 views • 38 slides
Codec Control Requirements Draft draft-basso-avt-videoconreq-01.txt Andrea Basso NMS

Codec Control Requirements Draft draft-basso-avt-videoconreq-01.txt Andrea Basso NMS

Codec Control Requirements Draft draft-basso-avt-videoconreq-01.txt Andrea Basso NMS Communications IETF 60 San Diego CA 1 Motivation A variety of video communication services such as video conferencing and video messaging rely on the

658 views • 16 slides
Assembly Programming on Linux Assembly Programming on Linux Necessity OS Kernel Development

Assembly Programming on Linux Assembly Programming on Linux Necessity OS Kernel Development

Assembly Programming on Linux Assembly Programming on Linux Necessity OS Kernel Development 80x86 Sparc Alpha Some device drivers SCSI Controller Video Card Network Card Others that has ROM on board .. Compiler/Interpreter/Cross

282 views • 11 slides
Video Codec Requirements and Evaluation Methodology t www.huawei.com

Video Codec Requirements and Evaluation Methodology t www.huawei.com

Video Codec Requirements and Evaluation Methodology t www.huawei.com draft-ietf-netvc-requirements-01 Alexey Filippov, Jose Alvarez (Huawei Technologies) Contents An overview of applications Requirements Evaluation

488 views • 27 slides
Daala Daala is a high-efficiency video codec designed for internet applications Technical

Daala Daala is a high-efficiency video codec designed for internet applications Technical

Daala Daala is a high-efficiency video codec designed for internet applications Technical differences (so far) Lapped Transforms Perceptual Vector Quantization Chroma from Luma Prediction Overlapped Block Motion Compensation

537 views • 40 slides
Linux Wireless Drivers Freedom considered harmful? Felix Fietkau <nbd@openwrt.org>

Linux Wireless Drivers Freedom considered harmful? Felix Fietkau <nbd@openwrt.org>

Linux Wireless Drivers Freedom considered harmful? Felix Fietkau <nbd@openwrt.org> 2015-12-30 Introduction OpenWrt developer for >10 years Involved with Linux wireless drivers almost as long Main focus: access points and

306 views • 27 slides
RGL Codec (G.711 Lossless Codec) http://www.winlab.rutgers.edu/~ramalho/rgl_codec_p19.txt

RGL Codec (G.711 Lossless Codec) http://www.winlab.rutgers.edu/~ramalho/rgl_codec_p19.txt

RGL Codec (G.711 Lossless Codec) http://www.winlab.rutgers.edu/~ramalho/rgl_codec_p19.txt (whitepaper & code at: www.vovida.org) Michael Ramalho mramalho@cisco.com RGL Codec - Use & Design Goals Utility/Use: End-to-end G.711

391 views • 14 slides
dmabuf Nikhil Devshatwar Texas Instruments, India 2 About author Embedded Linux developer

dmabuf Nikhil Devshatwar Texas Instruments, India 2 About author Embedded Linux developer

1 Exporting virtual memory as dmabuf Nikhil Devshatwar Texas Instruments, India 2 About author Embedded Linux developer Texas Instruments (Bangalore, India) Key work areas Video subsystem drivers Camera drivers Base

1.09k views • 17 slides
On Row-by-Row Coding for 2-D Constraints Ido Tal Tuvi Etzion Ron M. Roth Computer Science

On Row-by-Row Coding for 2-D Constraints Ido Tal Tuvi Etzion Ron M. Roth Computer Science

Introduction 2-D Constraints Encoding Scheme Finding D On Row-by-Row Coding for 2-D Constraints Ido Tal Tuvi Etzion Ron M. Roth Computer Science Department Technion, Haifa 32000, Israel Introduction 2-D Constraints Encoding Scheme Finding

1.08k views • 57 slides
Probing RNN Encoder-Decoder Generalization of Subregular Functions Using Reduplication Max

Probing RNN Encoder-Decoder Generalization of Subregular Functions Using Reduplication Max

Introduction Computational Properties of Reduplication Methods Results Discussion References Appendix Probing RNN Encoder-Decoder Generalization of Subregular Functions Using Reduplication Max Nelson, Hossep Dolatian, Jonathan Rawski,

851 views • 72 slides
Decoding in Compressed Sensing Ronald DeVore USC, 2008 p. 1/33 Discrete Compressed Sensing R

Decoding in Compressed Sensing Ronald DeVore USC, 2008 p. 1/33 Discrete Compressed Sensing R

Decoding in Compressed Sensing Ronald DeVore USC, 2008 p. 1/33 Discrete Compressed Sensing R N with N large x I USC, 2008 p. 2/33 Discrete Compressed Sensing R N with N large x I We are able to ask n questions about x USC, 2008

1.63k views • 145 slides
Composing f and f 1 . x = f 1 ( y ) then We know that if y = f ( x ) . Substituting f ( x

Composing f and f 1 . x = f 1 ( y ) then We know that if y = f ( x ) . Substituting f ( x

Composing f and f 1 . x = f 1 ( y ) then We know that if y = f ( x ) . Substituting f ( x ) for y in the equation on the left, we get f 1 ( f ( x )) = x . y = f 1 ( x ) Similarly if x = f ( y ) then and substituting f 1 ( x )

195 views • 4 slides
Brief Encounter Networks Vassilis Kostakos Oxford University, 16 October 2007 Motivation

Brief Encounter Networks Vassilis Kostakos Oxford University, 16 October 2007 Motivation

Brief Encounter Networks Vassilis Kostakos Oxford University, 16 October 2007 Motivation Understand the affordances of peoples mobility, and identify opportunities for pervasive systems Overview Data collection

762 views • 42 slides
Foundations of Chemical Kinetics Lecture 29: Diffusion-influenced reactions, Part II Marc R.

Foundations of Chemical Kinetics Lecture 29: Diffusion-influenced reactions, Part II Marc R.

Foundations of Chemical Kinetics Lecture 29: Diffusion-influenced reactions, Part II Marc R. Roussel Department of Chemistry and Biochemistry Diffusion-influenced reactions Consider an elementary reaction A + B k product(s). If

829 views • 15 slides
CS/ECE 6710 Tool Suite Verilog sim Synopsys Behavioral Design Compiler Verilog Structural

CS/ECE 6710 Tool Suite Verilog sim Synopsys Behavioral Design Compiler Verilog Structural

Synthesis and Place & Route Synopsys design compiler Cadence Encounter Digital Implementation System (EDI) CS/ECE 6710 Tool Suite Verilog sim Synopsys Behavioral Design Compiler Verilog Structural Verilog Cadence Your EDI Library

511 views • 36 slides
Mapping encounter outcomes onto the b -plane G. B. Valsecchi IAPS-INAF, Roma, Italy IFAC-CNR,

Mapping encounter outcomes onto the b -plane G. B. Valsecchi IAPS-INAF, Roma, Italy IFAC-CNR,

Mapping encounter outcomes onto the b -plane G. B. Valsecchi IAPS-INAF, Roma, Italy IFAC-CNR, Sesto Fiorentino, Italy All what you wanted to know about the b -plane, and never dared to ask... The b -plane of an encounter is the plane containing

929 views • 60 slides

More recommend