XXXX英特尔开发者大会(北京)-Haswell中的媒体创新.pdf

下一代英特尔下一代英特尔® 微体系架构（代号微体系架构（代号 Haswell））中的媒体创新中的媒体创新 GRAS002 江宏江宏 博士博士 英特尔院士，首席媒体架构师英特尔院士，首席媒体架构师 2 议程议程 • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 下一代英特尔®微架构,代号Haswell 本课程演示文稿本课程演示文稿（（PDF））发布在技术课程目录网站发布在技术课程目录网站: 该网址同时打印于会议指南中专题讲座日程页的上方该网址同时打印于会议指南中专题讲座日程页的上方 3 议程议程 下一代英特尔®微架构,代号Haswell • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 4 Haswell – 重点重点 2ch DDR3L Display 系统代理 图形处理器 Cores LLC Display PCIe I/O Display Ports DMI IMC PEG •第四代英特尔第四代英特尔® 酷睿酷睿™ 微处理器微处理器，采用22nm制程技术 •下一代英特尔® 高清显卡，支持微软* DirectX* 11.1, OpenGL* 4.0, 以及OpenCL* 1.2 •3D和媒体性能有了显著提高和媒体性能有了显著提高 •支持Display, HDMI, 以及DisplayPort*三端口同时显示，分辨率可高达 4Kx2K Haswell微架构微架构 下一代英特尔®微架构,代号Haswell 5 Haswell图形处理器架构图形处理器架构 Display 系统代理 图形处理器 Cores LLC Display PCIe I/O Display Ports DMI IMC PEGPEG 顶点处理 光栅化 /Z 像素操作 多格式 编解码器 媒体处理 显 示 命令流化器 统一执行单元阵列 指令缓存 EU EU EU EU EU EU 纹理取样器 媒体取样器 视频画质引擎 下一代英特尔®微架构,代号Haswell 6 图形处理器架构的基本组成模块图形处理器架构的基本组成模块 可扩展架构分为可扩展架构分为6个功能区域个功能区域: 1.全局资源: 一直到”Setup”的几何前端 2.共有条形模块: 光栅化模块, L3缓存器(L3$)以及像素后端 3.子条形模块: 渲染器 (EUs), 指令缓存器(IC$)以及取样器 –可扩展条形模块用于性能和Gflop调优 –两个条形模块用于高端sku(GT3) 4.多格式视频编解码器引擎(MFX) 5.视频画质增强引擎 6.显示模块 为规模的扩大创造条件！！为规模的扩大创造条件！！ 1 3 2 4 5 6 下一代英特尔®微架构,代号Haswell 7 顶点处理 光栅化 /Z 多格式编解码器 媒体处理 显示 命令流化器 统一执行单元阵列 指令缓存 EU EU EU EU EU EU 纹理取样器 媒体取样器 视频画质引擎 图形处理器图形处理器 - 媒体模块媒体模块 前端线程分发前端线程分发/管理管理: • 支持混合内核和线程创建的线程 • 采用记分牌机制控制线程执行顺序 针对媒体优化的执行单元针对媒体优化的执行单元: • 零开销线程切换零开销线程切换 • 固有的媒体指令集架构 • 面向向量/矩阵的操作 多格式编解码器多格式编解码器: • 并行引擎并行引擎 • 高性能 • 视频解码和编码 视频画质引擎视频画质引擎 • 视频处理视频处理 • 颜色处理 像素操作 媒体加速器媒体加速器 下一代英特尔®微架构,代号Haswell 8 议程议程 下一代英特尔®微架构,代号Haswell • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 9 低功耗解码引擎低功耗解码引擎 •高效的，功耗最优化的多格式编解码器引擎 •扩展了第三代英特尔® 酷睿™微处理器编解码器加速的成功，支持更多新的视频格式 – 固有的MVC“短格式” – MJPEG解码 – SVC (可分级视频编码)硬件解码加速 •支持大分辨率视频内容 – 支持4kx2k分辨率 •提高了解码器的错误处理能力 Haswell在第三代英特尔在第三代英特尔®酷睿酷睿™处理器支持处理器支持AVC, VC1, 以及以及MPEG2解码的基解码的基础上，增加了对础上，增加了对SVC解码的支持解码的支持 顶点处理 光栅化 /Z 像素处理 多格式 编解码器 媒体处理 显示 命令流化器 统一执行单元阵列 指令缓存器 EU EU EU EU EU EU 纹理取样器 媒体取样器 视频画质引擎 有了很大提高有了很大提高! 下一代英特尔®微架构,代号Haswell 10 4K的产业前景的产业前景 •4K生态系统正在形成 – 拍摄设备/照相机: RED*, JVC*, 以及Sony* 已经有4K相机 – 视频内容: 来源于4K相机和摄像机 – 编解码器引擎： 硬件支持4K视频内容的解码/编码 – 显示/显示器: 多款显示器和投影仪支持4K •4K正逐渐成为主流 – Sony最近宣布了QFHD/4K电视 – YouTube*已支持4K视频 – 将来的更高压缩率的视频格式，例如HEVC，将进一步推动4K的使用 – DisplayPort* 1.2/HDMI 2 标准支持4K显示 – MIPI CSI 标准于2013年支持4K传感器 分辨率分辨率 宽高比宽高比 像素数像素数( (百万百万) ) 4096x2304 16:9 (1.77:1) 9.4 4096x2160 1.89:1 8.8 3840x2160 (QFHD) 16:9(1.77:1) 8.3 •4K视频的分辨率是多少? – 4K是指水平方向像素数约为4000的多个不同分辨率 – 一些常见的4K分辨率为: 下一代英特尔®微架构,代号Haswell 11 4K 视频内容演示视频内容演示 3840 2160 英特尔产生的英特尔产生的4K/QFHD演示视频！演示视频！ 下一代英特尔®微架构,代号Haswell 12 Haswell对对4K视频的支持视频的支持 •Haswell支持端到端的 4K视频 – 编解码器:  解码能力达到4K x 2K  编码也支持4K x 2K – 显示:  DisplayPort* 1.2上最高能达到3840x2160 @ 60Hz  HDMI上最高能达到4096x2304 @ 24Hz 支持支持4k 解码和显解码和显示的示的Haswell 4k 视频内容视频内容 4k显示器显示器 下一代英特尔®微架构,代号Haswell 13 Haswell编码器编码器 •硬件加速提高了视频编码性能 •继续改进了编码器的微架构，支持新的编解码格式 – MPEG2编码 – SVC编码器硬件加速 •用于视频会议的更低延时编码 •更高性能的英特尔®高速视频同步 •可编程的，针对媒体优化的EU/取样器提高了视频编码质量 更高性能和质量的更高性能和质量的 Haswell 编码器增加了对编码器增加了对 MPEG2 和和 SVC 的硬件支持的硬件支持 下一代英特尔®微架构,代号Haswell 14 Mpeg2编码器编码器: : 为什么关心为什么关心? •虽然AVC/Mpeg4目前非常流行，但Mpeg2仍然会存在一段时间 •Mpeg2视频内容主要来自于DVD以及视频广播 •Mpeg2目前还被 DLNA所支持 •Haswell增加了Mpeg2编码功能 – 终端用户会受益于DVD创建时的低功耗编码 下一代英特尔®微架构,代号Haswell 15 SVC: 优势优势 •可分级视频编码(SVC)是AVC标准的一个扩展，且后向兼容 •SVC码流包含多个码流子集合，且在三个正交维度上可分级 – 时域可分级(帧率) – 空域可分级(图像分辨率) – 质量或SNR域可分级(图像质量和码率的渐进提高) •单一的视频内容可广播到不同类型的设备上(电视，个人电脑，平板电脑，以及智能) – 与为不同设备传送不同内容的同时联播方案相比，SVC在功耗和存储方面都具有优势 •使用SVC的好处 – 通过不同的设备进行多方视频会议 – 媒体流服务器 下一代英特尔®微架构,代号Haswell 16 视视频编码频编码: : 产业界比较产业界比较 •英特尔采用了硬件/GPU混合的编码方案 – 提供了性能，功耗和灵活性之间的均衡 •“ENC”对应于可编程EU阵列 •“PAK”对应于MFX硬件管道 •“ENC” 和 “PAK” 可同时处理不同的帧，从而得到更高的编码性能 混合的混合的2-阶段视频编码器阶段视频编码器: 运动估计 帧内估计 模式决策 运动补偿 帧内预测 前向量化 熵编码 像素重建 码率控制 “ENC” “PAK” 产业界编码方案产业界编码方案 性能性能 功耗功耗 灵活性灵活性 仅仅GPU 低 高 高 仅硬件仅硬件 高 † 低 低 混合方案混合方案(GPU + 硬件硬件) 高 均衡 均衡 † 依赖于具体的实现 下一代英特尔®微架构,代号Haswell 17 英特尔英特尔® 高速视频同步高速视频同步 •第三代英特尔®酷睿™微处理器的英特尔® 高速视频同步已经超级快 – 可在几分钟内转码一段2小时的电影 •Haswell进一步提高了高速视频同步的性能! 性能一代代不断提高性能一代代不断提高! 英特尔®微架构Arrandale, Sandy Bridge, Ivy Bridge, 以及下一代英特尔® 微架构代号Haswell的性能测试中用到的软件和工作量可能针对英特尔微处理器进行了性能优化。

性能测试，例如SYSmark* 和MobileMark*， 采用特定的计算机系统，组件，软件，操作和功能进行测量以上任何因素的改变都可能导致测试结果的变化您应该咨询一些其它信息和性能测试结果，包括该产品与其它产品联合使用的性能，以帮助您更全面的评估您要购买的产品更多信息请参考 Sandy Bridge Ivy Bridge Haswell Arrandale 媒体转码媒体转码 (1920x1080i MPEG2 到到 640x360 AVC) 配置细节可参见附录 18 编码器质量的提高编码器质量的提高 • 质量的提高来自于多个硬件优化功能特征 • 灵活的knobs用于高质量调优 • 多种编码模式用于性能和质量的均衡 - 快速模式, 普通模式以及质量模式 英特尔®微架构,代号Ivy Bridge; 下一代英特尔®微架构,代号Haswell 19 议程议程 下一代英特尔®微架构,代号Haswell • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 20 高质量视频处理高质量视频处理 •最新设计的视频质量引擎(VQE) 上的专用视频处理 •Haswell支持大量的视频处理功能，包括: –降噪 (DN) –解交织 (DI) –电影模式检测 (FMD) –肤色检测 (STD) –肤色增强 (STE) –总体颜色控制 (TCC) –自适应对比度增强 (ACE) –高级视频缩放 (AVS) –色域压缩 (GC) –色域扩展色域扩展 (GE)1 –肤色调优的图像增强滤波器肤色调优的图像增强滤波器1 –图像稳定图像稳定(IS)1 1Haswell上的新功能上的新功能 顶点处理 光栅化 /Z 像素操作 多格式 编解码器 媒体处理 显示 命令流化器 统一执行单元阵列 指令缓存器 EU EU EU EU EU EU 纹理取样器 媒体取样器 视频画质引擎 新模块新模块! ! 更高视频质量，更低功耗更高视频质量，更低功耗! ! 下一代英特尔®微架构,代号Haswell 21 图像稳定图像稳定 •采用不稳定的或者晃动的相机拍摄的视频会有附加的视觉抖动和失真 •图像稳定功能会消除视频中的抖动以得到平滑的视觉体验 •通过全局运动估计，运动轨迹计算，运动轨迹平滑以及抖动补偿操作得到稳定的视频 稳定的稳定的 视频序列视频序列 帧间帧间 全局运动估计全局运动估计 运动轨迹计算运动轨迹计算 运动轨迹平滑运动轨迹平滑 抖动补偿抖动补偿 - + + 输入输入 视频序列视频序列 22 色域扩展色域扩展 (GE) •窄色域视频内容在宽色域显示器上显示时会出现失真效果，例如过饱和以及颜色噪声 •色域扩展功能可以保持色彩饱和度，提高视觉质量 •Haswell采用了一种基于像素的将原始像素和改善后像素进行融合的自适应的色域扩展方法 原始原始sRGB图像图像 输出图像输出图像 下一代英特尔®微架构,代号Haswell 23 肤色调优的图像增强滤波器肤色调优的图像增强滤波器 • 通过加强或弱化肤色像素来增强输入图像细节信息 • 采用内容自适应的方法达到细节增强的效果 – 分析当前像素的NxN邻域像素 – 计算当前像素的肤色似然度 – 根据其NxN邻域以及其肤色似然度的统计，调节增加到该像素的细节数量 24 肤色调优的图像增强滤波器肤色调优的图像增强滤波器 – 示例示例 原始输入 IEF输出 IEF – 肤色区域加强 IEF – 肤色区域平滑 25 议程议程 下一代英特尔®微架构,代号Haswell • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 26 低功耗优化低功耗优化 •22nm制程的低功耗优势 •专用的高度优化的硬件引擎 –每个引擎的延时和功耗都更低 •图形处理器不同引擎间的并行度更高 –更低的图形处理器（PG）总体活动性 •GT3的条形模块功耗门控 •更好更精细的DOP (下降点) 时钟门控 –根据单个EU的工作量需求进行电源关闭 •SoC级的非核心和内存控制器的功耗改进 –更大的改进用于基于Haswell的平台, ULT/ULX •优化的软件栈可更快的使整个包进入睡眠状态 •从而提高了媒体工作任务的电池使用寿命 视频回放时的图形处理器活动性视频回放时的图形处理器活动性, 并发处理减少工作状态并发处理减少工作状态 Ivy Bridge Haswell 英特尔®微架构,代号Ivy Bridge; 下一代英特尔®微架构,代号Haswell 27 议程议程 下一代英特尔®微架构,代号Haswell • Haswell图形处理器概述 • Haswell媒体创新 – 视频编解码器创新 – 视频和图像处理创新 – 功耗及优化 – 软件赋能 28 针对视频的硬件加速针对视频的硬件加速 用于优化的媒体应用开发的跨平台API 英特尔英特尔®媒体媒体SDK 2013 目前目前英特尔英特尔®凌动™ 处理器上处理器上的加速的加速 免费下载： H.264 MPEG-2 MJPEG MVC 编码, 解码和转码用于视频编辑, 处理, 媒体格式转换, 流媒体, 高效回放, 以及视频会议 29 英特尔英特尔®媒体媒体SDK 面向未来的软件面向未来的软件API  z 未来的英特尔未来的英特尔®架构架构 优化的媒体硬件库优化的媒体硬件库 第三代第三代英特英特尔酷睿尔酷睿处处理器理器 优化的媒体硬件库优化的媒体硬件库 第四代第四代英特尔酷睿英特尔酷睿处理器处理器 优化的媒体硬件库优化的媒体硬件库 2012 2013 2014 第二代英特尔第二代英特尔® 酷酷睿睿™处理器处理器 第一个发布的英特尔第一个发布的英特尔®媒体媒体SDK 2011 英特尔英特尔®媒体媒体 SDK 2011 英特英特尔媒尔媒体体 SDK 2012 英特尔媒体英特尔媒体 SDK 2013 英特尔媒体英特尔媒体 SDK 2014 面向未来的视频硬件加速的软件面向未来的视频硬件加速的软件API 对开源项目免费授权对开源项目免费授权 将支持更多开源项目友好的特征将支持更多开源项目友好的特征 30 HandBrake HandBrake将支持英特尔将支持英特尔® 高速视频同步高速视频同步 “HandBrake团队已经和英特尔一起紧密的工作，以更好的发挥英特尔®高速同步视频的优势,” HandBreak团队成员Tim Walker说. “在测试的最初阶段, 初始的结果就保证了在解码和编码过程中的性能以及CPU占用率的显著降低, 尤其是对于移动和低功耗CPU部件. 早期测试版本不久后就能得到.” 31 用于用于Linux*服务服务器的英特尔器的英特尔®媒体媒体SDK 2013 • 英特尔®至强® E3-1285Lv2和英特尔®酷睿™处理器 • Ubuntu*和SUSE Linux*企业级服务器*操作系统 编码, 解码以及转码，用于基于服务器的实时流媒体, 会议以及视频分析 H.264 MPEG-2 VC-1 更多并发度的高清视频转码，更低的总所有成本更多并发度的高清视频转码，更低的总所有成本 今天今天就注册加入我们的有限Beta合作伙伴计划 32 将转码作为一种服务 英特英特尔主办的云尔主办的云 或者或者 授授权的软件栈权的软件栈 33 带带OpenCL*的媒体和图形的媒体和图形API •与英特尔® 媒体SDK, 微软* DirectX* 以及OpenGL* APIs协同操作的能力 •允许OpenCL*开发者在图形和媒体任务中更好的利用平台的资源 APIs 扩展扩展 英特尔英特尔® 高清显卡高清显卡零拷贝共享零拷贝共享 DirectX cl_khr_d3d10_sharing OpenGL cl_khr_gl_sharing cl_khr_gl_event DirectX 视频加速(DXVA) cl_intel_dx9_media_sharing 英特尔媒体SDK cl_intel_dx9_media_sharing OpenCL SDK包含有平面共享的示例代码包含有平面共享的示例代码 34 带共享带共享OpenCL*平面的转码器管道平面的转码器管道 解码平面解码平面 OpenCL 输入对象输入对象 OpenCL 输出对象输出对象 输出平面输出平面 OpenCL* 处理处理 解码解码 编码编码/渲染渲染 DirectX 9 媒体共享扩展 DirectX 9 媒体共享扩展 CPU 图形处理器图形处理器 最小化最小化CPU和和GPU之之间的平面拷贝间的平面拷贝 – 更高性能更高性能 微软微软* DirectX* 9 平面共享扩展平面共享扩展 35 总结总结 •代号Haswell的下一代英特尔®微架构在媒体创新方面表现突出 •提高了终端用户的电池使用寿命以及媒体应用的性能和质量 英特尔媒体创新在英特尔媒体创新在Haswell中中得到延续！！得到延续！！ 下一代英特尔®微架构,代号Haswell 36 Legal Disclaimer INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. 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The information here is subject to change without notice. Do not finalize a design with this information. •The products described in this document may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. •Intel product plans in this presentation do not constitute Intel plan of record product roadmaps. Please contact your Intel representative to obtain Intel's current plan of record product roadmaps. •Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families. 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Rev. 1/17/13 38 备份备份 39 4K 图像图像 40 4K 图图像像 41 4K 图图像像 42 4K 图图像像 43 4K 图图像像 下一代英特尔®微架构,代号Haswell 44 Appendix - Configuration for Page 17 Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Performance tests, such as SYSmark*, are measured using specific computer systems, components, software, operations and functions. Any change to any of those factors may cause the results to vary. You should consult other information and performance tests to assist you in fully evaluating your contemplated purchases, including the performance of that product when combined with other products. For more information go to (HD Media) CyberLink* MediaEspresso 6 - Video conversion workload consist of a 4 minute, 449 MB, 1920x1080i, 18884 kbps, MPG2 video file that one would have obtained when recording TV to their PC. The file is transcoded to a smaller 640x360, H.264, .MP4* file for viewing on a portable device such as an iPhone* or iPod* Touch. Configuration: – Intel® Core™ i5-2430M Processor, Intel® Core™ i3-2330M Processor, Intel Reference Platform, BIOS:86C.0053.P00, Intel INF: 9.2.0.1015, Memory: Micron* 4GB (2x2GB) DDR3-1333, Hard Drive: Hitachi* 320GB 7200rpm SATA2, Graphics: Intel® HD Graphics 3000, Driver: 8.15.10.2246, OS: Microsoft* Windows* 7 Ultimate 64-bit Source: Intel Corporation. – Intel Core i5-430M Processor, Intel Core i3-350M Processor, OEM System, BIOS: v F.13, Intel INF: 9.1.1.1020, Memory: Micron 4GB (2x2GB) DDR3-1333, Hard Drive: Hitachi 320GB 7200rpm SATA2, Graphics: Intel® HD Graphics, Driver: 8.15.10.2182, OS: Microsoft Windows 7 Ultimate 64-bit Source: Intel Corporation. 。