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原创 x264 - x264_reference_build_list

static inline void x264_reference_build_list( x264_t *h, int i_poc ){    int b_ok;    /* build ref list 0/1 */    // 初始化 h->i_ref[0], h->i_ref[1]为0    // h->i_ref[0]为参考帧队列ref[0]的索引    // h

2014-06-19 20:49:04 1412

原创 x264 - x264_mb_analyse_inter_p16x16

static void x264_mb_analyse_inter_p16x16( x264_t *h, x264_mb_analysis_t *a ){    x264_me_t m;    int i_mvc;    ALIGNED_4( int16_t mvc[8][2] );    int i_halfpel_thresh = INT_MAX;    int *p_

2014-06-14 13:39:31 1544

原创 x264 - get_ref

static pixel *get_ref( pixel *dst,   intptr_t *i_dst_stride,                       pixel *src[4], intptr_t i_src_stride,                       int mvx, int mvy,                       int i_width

2014-06-12 14:15:44 1033

原创 x264 - x264_macroblock_cache_load

1280x720 => w = 80 16x16mbs         => h = 45 16x16mbstotal mbs = 3600Now analysing mb 1, mb_x = 1, mb_y = 0static void ALWAYS_INLINE x264_macroblock_cache_load( x264_t *h, int mb_x, int mb_y,

2014-06-09 14:25:51 1400

原创 x264 - x264_mb_encode_i16x16

/* All encoding functions must output the correct CBP and NNZ values. * The entropy coding functions will check CBP first, then NNZ, before * actually reading the DCT coefficients.  NNZ still must

2014-06-05 10:19:42 1444

原创 x264 - x264_clip_pixel

static ALWAYS_INLINE pixel x264_clip_pixel( int x ){    return ( (x & ~PIXEL_MAX) ? (-x)>>31 & PIXEL_MAX : x );}// 这里假定pixel_bit_depth=8, 那么PIXEL_MAX=255// (x & ~PIXEL_MAX)为真， 表示x作为像素，其值溢出

2014-05-30 10:33:14 1048

原创 x264 - ALIGNED_ARRAY_32

#if HAVE_32B_STACK_ALIGNMENT#define ALIGNED_ARRAY_32( type, name, sub1, ... )\    ALIGNED_32( type name sub1 __VA_ARGS__ )#else#define ALIGNED_ARRAY_32( ... ) EXPAND( ALIGNED_ARRAY_EMU( 31, __

2014-05-29 10:00:46 1155

原创 x264 - x264_pixel_satd_8x4

static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 ){// hadamard4 (Hadamard Ordered)// 1  1  1  1// 1 -1  1 -1// 1  1 -1 -1// 1 -1 -1  1/

2014-05-28 19:31:52 1256

原创 x264 - dct.c

/***************************************************************************** * dct.c: transform and zigzag ***************************************************************************** * Copyr

2013-06-29 18:15:47 2200

原创 x264 - predict.c

/**************************************************************************** * 16x16 prediction for intra luma block ****************************************************************************/

2013-06-27 14:38:12 1392

原创 x264 - x264_frame_init_lowres

void x264_frame_init_lowres( x264_t *h, x264_frame_t *frame ){    pixel *src = frame->plane[0];     // get luma plane    int i_stride = frame->i_stride[0];  // line stride of luma plane    int

2013-06-13 15:28:40 2124

转载 Wave

http://www.cnblogs.com/cooka/p/3673816.html【OpenGL】Shader实例分析（一）－Wave转发请保持地址：http://blog.youkuaiyun.com/stalendp/article/details/21993227这篇文章主要分析一个Shader，从而感受shader的魅力，并学习相关shader的函数的用法。

2018-01-24 18:56:22 585

转载 snow

https://www.cnblogs.com/gccbuaa/p/6842649.htmlShader "shadertoy/Flakes" { // https://www.shadertoy.com/view/4d2Xzc Properties{ iMouse ("Mouse Pos", Vector) = (100,100,0,0) iChann

2018-01-24 18:50:14 545

转载 water ripple shader

https://www.shadertoy.com/view/MsBSz1http://blog.youkuaiyun.com/chenxizhibi/article/details/51291930const float timeFactor = 10.0;float ripple(float dist, float rippleIntensity, float rippleScale)

2018-01-24 17:34:21 1207

转载 GLSL shader that draws a Bezier line given four control points

https://vicrucann.github.io/tutorials/bezier-shader/GLSL shader that draws a Bezier line given four control pointsContexthis post is a continuation of one of the previous examples on

2018-01-24 17:14:29 434

转载 Unreal4 VS Unity

这是一个很难的问题，而且不容易回答，很容易引起争论，老实说我并不想在公开场合评论到底哪个更好或者更坏，这并不明智，其实每个人心底都有自己的答案。我只想聊一些我的看法。一、关于Unreal4和Unity很不幸，我并没有看过Unity代码，我们没有购买，而我也并不是特别想看。或许有人说：装！嗯，其实写了很多年代码了，什么没见过？看过并不一定能写出那样的产品，没看过也不代表你不能

2018-01-16 14:47:08 2071

转载 Stencil Shadow Volume

http://ogldev.atspace.co.uk/www/tutorial40/tutorial40.htmlStencil Shadow Volume Background In tutorials 23 & 24 we studied the shadow map technique which is a relatively simple way to g

2018-01-13 21:31:34 388

转载 Parallax Mapping

http://www.cnblogs.com/jim-game-dev/p/5410529.html视差贴图（Parallax Mapping）使用顶点光照的模型，当模型的面数很少的时候，光照效果会显得很奇怪，因为只有顶点上的光照是正确计算出来的，三角面上的光照都是通过硬件插值得到，所以难免会出现问题。基于像素的光照可以很好的改善这个问题。如果想要表现出

2018-01-11 18:47:59 383

转载 ffmpeg compile on android

FFMPEG：请参考FFMPEG官方给出的编译向导：https://trac.ffmpeg.org/wiki/CompilationGuide/Android在此链接中有编译脚本的集合。下载后解压，将ffmpeg的源代码copy到解压缩目录的ffmpeg文件夹中。按照项目的github的主页上的说明步骤，就能顺利进行。需要注意的是：    1、脚本都是基于Ubunt

2018-01-08 00:44:55 395

转载 RGB to YUV using shader

1down votefavoriteI want to use fragment shader to convert RGB to YUV420P using shader.1，I figured out the coordinates of the current texture color.2，I calculated the 4 Y a

2017-12-31 01:13:43 1468

转载 Uncompressed Y´CbCr Video in QuickTime Files

Uncompressed Y´CbCr Video in QuickTime Fileshttps://developer.apple.com/library/content/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG8-V210__4_2_2_COMPRESSION_TYPE

2017-12-30 18:24:02 673

转载 YUV 422 10bit

http://adec.altervista.org/blog/yuv-422-v210-10-bit-packed-decoder-in-glsl/?doing_wp_cron=1514628553.2152769565582275390625YUV 4:2:2 v210 10-bit packed decoder in GLSLPosted on 201

2017-12-30 18:20:14 4929

转载 yuv 10 bits to 8bits

For 8 bit: Y range is [16..235] and U/V range is [16..240] For 10 bit: Y range is [64..940] and U/V range is [64..960] So shifting each component value 2 bits to right will provide correct con

2017-12-30 16:49:47 944

转载 YUVTools

http://www.sunrayimage.com/faq.htmlHome/ FAQFrequently Asked Questions About YUVTools:What's sampling format ?What's interlace/progressive format?What's pixel

2017-12-30 10:43:14 1342

转载 Conversion between quaternions and Euler angles

https://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_anglesFrom Wikipedia, the free encyclopediaJump to: navigation, search Spatial rotations in three dimension

2017-12-28 19:33:40 1174

转载 A Simple Quaternion-based Camera

https://www.gamedev.net/articles/programming/math-and-physics/a-simple-quaternion-based-camera-r1997I looked through a thousand web pages for a good quaternion camera tutorial, and I could not f

2017-12-28 19:23:47 309

转载 三维旋转-旋转矩阵 欧拉角 四元数

http://www.cnblogs.com/yiyezhai/p/3176725.html原文见我的博客主站，欢迎大家过去评论。如何描述三维空间中刚体的旋转，是个有趣的问题。具体地说，就是刚体上的任意一个点P(x, y, z)围绕过原点的轴(i, j, k)旋转θ，求旋转后的点P\'(x\', y\', z\')。旋转矩阵旋转矩阵乘以点P的齐次坐标，得到旋

2017-12-28 10:45:12 680

转载 Quaternion and Euler Angle

http://blog.youkuaiyun.com/u012700322/article/details/52252305四元数与欧拉角（Yaw、Pitch、Roll）的转换在3D图形学中，最常用的旋转表示方法便是四元数和欧拉角，比起矩阵来具有节省存储空间和方便插值的优点。本文主要归纳了两种表达方式的转换，计算公式采用3D笛卡尔坐标系：定义分别为绕Z轴、Y轴、X轴

2017-12-28 10:33:52 1426

转载 Unreal Engine 4 C++ Camera Pitch Yaw Roll

Unreal Engine 4 C++ Camera Pitch Yaw Rollhttp://blog.youkuaiyun.com/qq_20309931/article/details/53375517Unreal Engine 4 C Camera Pitch Yaw Roll 直观理解摄像机旋转概述根据Pitch旋转

2017-12-28 10:07:32 571

转载 Yaw Pitch and Roll Rotations

http://planning.cs.uiuc.edu/node102.htmlYaw Pitch and Roll RotationsA 3D body can be rotated about three orthogonal axes, as shown inFigure3.8. Borrowing aviation terminology,

2017-12-28 10:01:34 500

转载 离屏渲染(Pbuffer)

http://www.itwendao.com/article/detail/468311.html上一节我们只是把情丝斩断了，还是没偷偷摸摸的干点见不得人的事，这节我们就来吧！首先，我们来看EGL创建EGLSurface有三个方法：eglCreateWindowSurface()、eglCreatePbufferSurface()和eglCreatePixmapSur

2017-12-22 11:53:35 6196 1

转载 pbuffer vs fbo in egl offscreen rendering

https://stackoverflow.com/questions/28817777/pbuffer-vs-fbo-in-egl-offscreen-renderingI'm very confused at egl pbuffer surface. In my opinion, a pbuffer surface is a platform

2017-12-22 11:29:34 1151

转载 Normal Mapping

http://ogldev.atspace.co.uk/www/tutorial26/tutorial26.htmlTutorial 26: Normal Mapping Background Our lighting technique results are not too bad. The light is nicely interpolated over t

2017-12-11 01:08:33 1153

转载 Shadow Mapping

http://ogldev.atspace.co.uk/www/tutorial24/tutorial24.htmlTutorial 24: Shadow Mapping - Part 2 Background In the previous tutorial we learned the basic principle behind the shadow mapp

2017-12-10 23:59:12 256

转载 Order Independent Transparency

www.openglsuperbible.com/2013/08/20/is-order-independent-transparency-really-necessary/Order Independent TransparencyPosted on August 20, 2013 by grahamComments Off on Orde

2017-12-08 17:38:34 885

转载 OpenGL Blending

https://learnopengl.com/#!Advanced-OpenGL/BlendingBlendingAdvanced-OpenGL/BlendingBlending in OpenGL is also commonly known as the technique to implement transparency within objects. Tra

2017-12-08 17:12:12 332

转载 OpenGL Depth and Stencil Test

https://open.gl/depthstencilsExtra buffersUp until now there is only one type of output buffer you've made use of, the color buffer. This chapter will discuss two additional types, thede

2017-12-07 17:52:57 594

转载 OpenGL 4.0的Tessellation Shader（细分曲面着色器）

http://www.cnblogs.com/zenny-chen/p/4280100.html细分曲面着色器（Tessellation Shader）处于顶点着色器阶段的下一个阶段，我们可以看以下链接的OpenGL渲染流水线的图：https://www.opengl.org/wiki/Rendering_Pipeline_Overview（可能需要FQ）。它是由ATI在2001年

2017-12-06 18:01:50 1947

转载 Triangle Tessellation with OpenGL 4.0

Triangle Tessellation with OpenGL 4.0http://prideout.net/blog/?p=48Triangle Tessellation with OpenGL 4.0Reviewing Geometry ShadersThe New OpenGL 4.0+ PipelineInner and Outer

2017-12-06 17:28:16 253

转载 OpenGL Partical System by Transform Feedback

使用OpenGL的变换反馈（transform feedback）构造粒子系统粒子系统是三维计算机图形学中用来模拟火，爆炸，雾，雪，流行尾迹或者发光轨迹等视觉效果的技术。粒子系统模拟这些现象的步奏简单的分为以下两步：  1. 更新每个粒子的属性，如粒子的颜色、速度，位置等。  2. 渲染粒子。采用billboard和纹理渲染粒子对象。  粒子系统负责管理粒子的个数和属性，当

2017-12-05 16:43:52 285

嵌入式系统Linux内核开发实战指南 ARM平台 王洪辉.7z.003
王洪辉 潜心力作-嵌入式Linux开发 ARM 平台。pdf 文档， 被分割成三部分压缩。这是第三部分。

2014-07-04

A First Course on Wavelets
Eugenio Hernandez graduated from the Universidad Complutense de Madrid in 1977 and obtained his Ph.D. degree from Washington University in St. Louis in 1981. He has been a member of the faculty of the Universidad Autonoma de Madrid since 1982 and is now Professor of Mathematics. During the academic year 1987-88 Dr. Hernandez was a Fulbright Fellow and a member of the Mathematical Sciences Research Institute in Berkeley, California. He was a visiting professor at Washington University in St. Louis in 1994-95. His research interests lie in the areas of the theory of interpolation of operators, weighted inequalities, and most recently, in the theory of wavelets. Guido Weiss obtained his undergraduate and graduate degrees from the University of Chicago, receiving his Ph.D. degree in 1956. He served on the faculty at DePaul University from 1955 to 1960, and joined the faculty of Washington University in 1960 where he is now the Elinor Anheuser Professor of Mathematics. During the past 35 years he has had leaves of absence that have allowed him to be visiting professor in several different institutions: the Sorbonne, the University of Geneva, the University of Paris in Orsay, the Mathematical Sciences Research Institute in Berkeley, California (in each case for an academic year). He also was visiting professor during semester academic leave at the Universidad de Buenos Aires, Peking University, Beijing Normal University, and the Universidad Autonoma de Madrid. His research involves a broad area of mathematical analysis, particularly harmonic analysis. Some of his work, especially his contributions to the atomic and molecular characterizations of certain function spaces (particularly the Hardy spaces), is closely related to the theory of wavelets, a subject that has commanded his attention during the last few years. He has been awarded several honorsamong them the Chauvenet Prize and honorary degrees from Beijing Normal University, the University of Milano, and the University of Barcelona.

2014-07-02

VC-1 and H.264 video compression standards for broadband video services
The VC-1 and H.264 video compression standards for broadband video services pdf document, mpeg4 and h.264 classical english instruction book.

2014-04-13

aes encrypt source code
aes cbc encrypt and decrypt source code from openssl source code.

2014-03-18

x264 h264_find_frame_end flow diagram
x264 h264_find_frame_end state transfer diagram with visio format

2014-03-11

ffmpeg analyse document
ffmpeg analyse document, including flow diagram in visio format.

2014-03-10

Head First Design Patterns (English Edition)
Head First Design Patterns (English Edition), clear pdf document.

2013-11-21

数字图像处理第二版(冈萨雷斯)习题答案
数字图像处理第二版(冈萨雷斯)习题答案 pdf document.

2013-10-27

Android 技术内幕.系统卷
Android 技术内幕.系统卷, pdf document, 作者：杨丰盛 2011-05

2013-10-18

OpenCV 2 Computer Vision Application Programming Cookbook
OpenCV 2 Computer Vision Application Programming Cookbook, including pdf document and source code.

2013-10-18

Mastering OpenCV with Practical Computer Vision Projects (full version)
Mastering OpenCV with Practical Computer Vision Projects (full version) - by Daniel Lélis Baggio etc, pdf document.

2013-10-18

Learning OpenCV
Learning OpenCV - by Gary Bradski and Adrian Kaehler, pdf document

2013-10-18

OpenGL Programming Guide 8th Edition - 2013
OpenGL Programming Guide 8th Edition - 2013, pdf document

2013-10-14

OPENCL异构计算
OPENCL异构计算, 中文， pdf 文档。 作者：Benedict Gaster 等

2013-09-25

Heterogeneous Computing with OpenCL
Heterogeneous Computing with OpenCL, english, pdf document.

2013-09-25

Network Programming for Microsoft Windows, 2nd Edition
Network Programming for Microsoft Windows, 2nd Edition, English. chm document

2013-09-22

Windows via CC++ 5th edition
Windows via CC++ 5th edition, english. chm document

2013-09-22

H264_And_MPEG4_Video_Compression_Video_Coding_For_Next_Generation_Multimedia
H264 And MPEG4 Video Compression Video Coding For Next Generation Multimedia pdf document

2013-08-23

Discrete-Time Signal Processing 3rd edition (oppenheim)
Discrete-Time Signal Processing 3rd edition (oppenheim) pdf document, about 70M size.

2013-07-03

Intel® 64 and IA-32 Architectures Software Developer’s Manual
Intel® 64 and IA-32 Architectures Software Developer’s Manual pdf document, 33M size.

2013-07-03

H264Visa-1.15 cracked version
H264 codec stream analyse softwore version 1.15 cracked

2013-07-01

source code of many av codecs
a source code tarball of all kinds of audio/video encode/decode for convenient download, including aacplus, fdk-aac, amrnb, amrwb, ogg, vorbis, xvidcore, vpx, bluray etc.

2013-05-10

mpeg4ip source code
mpeg4ip can be used to generate track hint for mp4 file, this is a must for Darwin Streaming Server. mpeg4ip source code and SDL source code for convenient download. The SDL is a must for Configure and compile mpeg4ip. Additionally, The libtool is also a must, but it can be install by apt-get install libtool on ubuntu. For pass the compiling, you need process the compiling error manually when compiling mpeg4ip.

2013-05-08

hevc-h265 draft specification
latest HEVC (H265) draft specification pdf document.

2013-04-25

hevc-h265-hm10
HEVC (H265) test model source code 10 for convenient download

2013-04-25

HEVC test model source code 1.0
HEVC (h265) test model source code 1.0 for convenient download.

2013-04-24

Multiple View Geometry in Computer Vision
Multiple View Geometry in Computer Vision (Richard Hartley 2nd Edition) clear pdf document

2013-03-31

Image Processing, Analysis, and Machine Vision
Image Processing, Analysis, and Machine Vision (Sonka 3rd Edition 2007) clear pdf document

2013-03-31

Computer Vision-A Modern Approach
Computer Vision-A Modern Approach (D.A Forsyth) original edition clear pdf document

2013-03-31

Computer Vision Algorithms and Applications
Computer Vision Algorithms and Applications (Richard Szeliski 09-2010) original version clear pdf document

2013-03-31

Mathematics for 3D Game Programming and Computer Graphics (Third Edition)
Mathematics for 3D Game Programming and Computer Graphics (Third Edition) pdf document by Eric Lengyel

2013-03-25

opengl 4.3 specification core with changes
opengl 4.3 specification core with changes (2012-08-06) pdf document

2013-03-21

The Scientist and Engineer's and Guide to Digital Signal Processing.pdf
Digital Signal Processing is one of the most powerful technologies that will shape science and engineering in the twenty-first century. Revolutionary changes have already been made in a broad range of fields: communications, medical imaging, radar & sonar, high fidelity music reproduction, and oil prospecting, to name just a few. Each of these areas has developed a deep DSP technology, with its own algorithms, mathematics, and specialized techniques. This combination of breath and depth makes it impossible for any one individual to master all of the DSP technology that has been developed. DSP education involves two tasks: learning general concepts that apply to the field as a whole, and learning specialized techniques for your particular area of interest. This chapter starts our journey into the world of Digital Signal Processing by describing the dramatic effect that DSP has made in several diverse fields.

2019-06-05

Machine Learning - The Art and Science of Algorithms that Make Sense of Data
Machine Learning: Making Sense of Data - Peter Flach (University of Bristol)

2015-03-16

H264-2014-02
Summary Recommendation ITU-T H.264 | International Standard ISO/IEC 14496-10 represents an evolution of the existing video coding standards (ITU-T H.261, ITU-T H.262, and ITU-T H.263) and it was developed in response to the growing need for higher compression of moving pictures for various applications such as videoconferencing, digital storage media, television broadcasting, Internet streaming, and communication. It is also designed to enable the use of the coded video representation in a flexible manner for a wide variety of network environments. The use of this Recommendation | International Standard allows motion video to be manipulated as a form of computer data and to be stored on various storage media, transmitted and received over existing and future networks and distributed on existing and future broadcasting channels.

2015-03-06

H265-2014-10
Rec. ITU-T H.265 v2 (10/2014) i Recommendation ITU-T H.265 High efficiency video coding Summary Recommendation ITU-T H.265 | International Standard ISO/IEC 23008-2 represents an evolution of the existing video coding Recommendations (ITU-T H.261, ITU-T H.262, ITU-T H.263 and ITU-T H.264) and was developed in response to the growing need for higher compression of moving pictures for various applications such as Internet streaming, communication, videoconferencing, digital storage media and television broadcasting. It is also designed to enable the use of the coded video representation in a flexible manner for a wide variety of network environments. The use of this Recommendation | International Standard allows motion video to be manipulated as a form of computer data and to be stored on various storage media, transmitted and received over existing and future networks and distributed on existing and future broadcasting channels. This Recommendation | International Standard was developed jointly with ISO/IEC JTC 1/SC 29/WG 11 (MPEG) and corresponds in a technically aligned manner to ISO/IEC 23008-2.

2015-03-06

Voice over IP Fundamentals
This book is designed to provide information about Voice over IP. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied.

2014-10-22

ISO-IEC-14496-1-2-3
ISO the International Organization for Standardization and IEC the International Electrotechnical Commission form the specialized system for worldwide standardization National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity ISO and IEC technical committees collaborate in fields of mutual interest Other international organizations governmental and non governmental in liaison with ISO and IEC also take part in the work In the field of information technology ISO and IEC have established a joint technical committee ISO IEC JTC 1 ">ISO the International Organization for Standardization and IEC the International Electrotechnical Commission form the specialized system for worldwide standardization National bodies that are members of ISO or IEC participate in the development of International Standards through technical commi [更多]

2014-08-29

嵌入式系统Linux内核开发实战指南 ARM平台 王洪辉.7z.002
王洪辉 潜心力作-嵌入式Linux开发 ARM 平台。pdf 文档， 被分割成三部分压缩。这是第二部分。

2014-07-04

嵌入式系统Linux内核开发实战指南 ARM平台 王洪辉.7z.001
王洪辉 潜心力作-嵌入式Linux开发 ARM 平台。pdf 文档， 被分割成三部分压缩。这是第一部分。

2014-07-04

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