{"id":76952,"date":"2026-02-23T16:34:32","date_gmt":"2026-02-23T08:34:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/76952.html"},"modified":"2026-02-23T16:34:32","modified_gmt":"2026-02-23T08:34:32","slug":"%e4%bb%8e%e9%9b%b6%e6%9e%84%e5%bb%ba%ef%bc%9a%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3graphicbuffer%e5%9c%a8android%e5%9b%be%e5%bd%a2%e6%a0%88%e4%b8%ad%e7%9a%84%e6%a0%b8%e5%bf%83%e4%bd%9c%e7%94%a8%e4%b8%8e","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/76952.html","title":{"rendered":"\u4ece\u96f6\u6784\u5efa\uff1a\u6df1\u5165\u7406\u89e3GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\u4e0e\u8de8\u8fdb\u7a0b\u4f20\u9012\u673a\u5236"},"content":{"rendered":"<h2>\u4ece\u96f6\u6784\u5efa&#xff1a;\u6df1\u5165\u7406\u89e3GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\u4e0e\u8de8\u8fdb\u7a0b\u4f20\u9012\u673a\u5236<\/h2>\n<p>\u5728Android\u56fe\u5f62\u7cfb\u7edf\u7684\u590d\u6742\u67b6\u6784\u4e2d&#xff0c;GraphicBuffer\u5982\u540c\u4e00\u4f4d\u65e0\u58f0\u7684\u8c03\u5ea6\u8005&#xff0c;\u627f\u8f7d\u7740\u6bcf\u4e00\u5e27\u753b\u9762\u7684\u6570\u636e\u6d41\u8f6c\u4e0e\u5171\u4eab\u3002\u5bf9\u4e8e\u4e2d\u7ea7Android\u7cfb\u7edf\u5f00\u53d1\u5de5\u7a0b\u5e08\u548c\u56fe\u5f62\u7cfb\u7edf\u7814\u7a76\u8005\u800c\u8a00&#xff0c;\u6df1\u5165\u7406\u89e3GraphicBuffer\u7684\u5e95\u5c42\u673a\u5236\u4e0d\u4ec5\u662f\u6027\u80fd\u4f18\u5316\u7684\u5173\u952e&#xff0c;\u66f4\u662f\u638c\u63e1\u591a\u8fdb\u7a0b\u95f4\u9ad8\u6548\u6570\u636e\u4f20\u9012\u7684\u6838\u5fc3\u6280\u672f\u3002\u672c\u6587\u5c06\u5e26\u60a8\u4ece\u96f6\u5f00\u59cb&#xff0c;\u9010\u6b65\u89e3\u6790GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528&#xff0c;\u4ee5\u53ca\u5b83\u5982\u4f55\u901a\u8fc7DMA-BUF\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\u5b9e\u73b0\u5b89\u5168\u9ad8\u6548\u7684\u8de8\u8fdb\u7a0b\u6570\u636e\u4f20\u8f93\u3002<\/p>\n<h3>1. GraphicBuffer\u7684\u57fa\u7840\u67b6\u6784\u4e0e\u6838\u5fc3\u89d2\u8272<\/h3>\n<p>GraphicBuffer\u4f5c\u4e3aAndroid\u56fe\u5f62\u7cfb\u7edf\u7684\u57fa\u77f3&#xff0c;\u5176\u8bbe\u8ba1\u521d\u8877\u662f\u4e3a\u4e86\u89e3\u51b3\u56fe\u5f62\u6570\u636e\u5728\u591a\u4e2a\u8fdb\u7a0b\u95f4\u7684\u5171\u4eab\u4e0e\u4f20\u9012\u95ee\u9898\u3002\u4e0e\u4f20\u7edf\u7684\u4f4d\u56fe\u6216\u5b57\u8282\u6570\u7ec4\u4e0d\u540c&#xff0c;GraphicBuffer\u76f4\u63a5\u4e0e\u5e95\u5c42\u786c\u4ef6\u62bd\u8c61\u5c42&#xff08;HAL&#xff09;\u4ea4\u4e92&#xff0c;\u901a\u8fc7Gralloc&#xff08;Graphics Allocation&#xff09;\u6a21\u5757\u7ba1\u7406\u56fe\u5f62\u7f13\u51b2\u533a\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;GraphicBuffer\u901a\u5e38\u4e0eSurface\u3001SurfaceFlinger\u7b49\u7ec4\u4ef6\u534f\u540c\u5de5\u4f5c\u3002\u5f53\u4e00\u4e2a\u5e94\u7528\u9700\u8981\u7ed8\u5236\u754c\u9762\u65f6&#xff0c;\u5b83\u4f1a\u4eceBufferQueue\u4e2d\u8bf7\u6c42\u4e00\u4e2aGraphicBuffer&#xff0c;\u5c06\u7ed8\u5236\u5185\u5bb9\u5199\u5165\u5176\u4e2d&#xff0c;\u7136\u540e\u5c06\u5176\u4ea4\u8fd8\u7ed9BufferQueue\u4f9bSurfaceFlinger\u5408\u6210\u3002\u8fd9\u79cd\u673a\u5236\u786e\u4fdd\u4e86\u56fe\u5f62\u6570\u636e\u7684\u9ad8\u6548\u6d41\u8f6c&#xff0c;\u540c\u65f6\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u62f7\u8d1d\u3002<\/p>\n<p>GraphicBuffer\u7684\u5185\u90e8\u7ed3\u6784\u5305\u542b\u591a\u4e2a\u5173\u952e\u5b57\u6bb5&#xff1a;<\/p>\n<ul>\n<li>width\/height&#xff1a;\u7f13\u51b2\u533a\u7684\u50cf\u7d20\u5c3a\u5bf8<\/li>\n<li>format&#xff1a;\u50cf\u7d20\u683c\u5f0f&#xff08;\u5982RGBA_8888\u3001RGB_565\u7b49&#xff09;<\/li>\n<li>usage&#xff1a;\u4f7f\u7528\u6807\u5fd7\u4f4d&#xff0c;\u6307\u793a\u7f13\u51b2\u533a\u7684\u9884\u671f\u7528\u9014<\/li>\n<li>stride&#xff1a;\u6b65\u957f\u503c&#xff0c;\u8868\u793a\u6bcf\u884c\u50cf\u7d20\u5360\u7528\u7684\u5b57\u8282\u6570<\/li>\n<li>handle&#xff1a;\u6307\u5411\u5e95\u5c42\u539f\u751f\u7f13\u51b2\u533a\u7684\u53e5\u67c4<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u5b57\u6bb5\u4e0d\u4ec5\u5b9a\u4e49\u4e86\u7f13\u51b2\u533a\u7684\u89c6\u89c9\u7279\u6027&#xff0c;\u8fd8\u51b3\u5b9a\u4e86\u5176\u5728\u4e0d\u540c\u786c\u4ef6\u7ec4\u4ef6\u95f4\u7684\u517c\u5bb9\u6027\u548c\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<h3>2. Gralloc\u5206\u914d\u5668\u4e0e\u786c\u4ef6\u62bd\u8c61\u5c42\u7684\u4ea4\u4e92\u673a\u5236<\/h3>\n<p>GraphicBuffer\u7684\u5206\u914d\u8fc7\u7a0b\u6d89\u53ca\u590d\u6742\u7684\u5c42\u7ea7\u8c03\u7528\u94fe&#xff0c;\u6700\u7ec8\u901a\u8fc7Gralloc\u6a21\u5757\u4e0e\u786c\u4ef6\u9a71\u52a8\u4ea4\u4e92\u3002Android\u7cfb\u7edf\u652f\u6301\u591a\u4e2a\u7248\u672c\u7684Gralloc\u5b9e\u73b0&#xff08;\u4eceGralloc2\u5230Gralloc5&#xff09;&#xff0c;\u6bcf\u4e2a\u7248\u672c\u90fd\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u7279\u6027\u96c6\u548c\u6027\u80fd\u4f18\u5316\u3002<\/p>\n<p>\u5f53\u5e94\u7528\u8bf7\u6c42\u5206\u914dGraphicBuffer\u65f6&#xff0c;\u8c03\u7528\u94fe\u5927\u81f4\u5982\u4e0b&#xff1a;<\/p>\n<p>\/\/ \u793a\u4f8b\u4ee3\u7801&#xff1a;GraphicBuffer\u7684\u521d\u59cb\u5316\u8fc7\u7a0b<br \/>\nstatus_t GraphicBuffer::initWithSize(uint32_t width, uint32_t height,<br \/>\n                                    PixelFormat format, uint32_t layerCount,<br \/>\n                                    uint64_t usage, std::string requestorName) {<br \/>\n    GraphicBufferAllocator&amp; allocator &#061; GraphicBufferAllocator::get();<br \/>\n    uint32_t outStride &#061; 0;<br \/>\n    buffer_handle_t handle &#061; nullptr;<\/p>\n<p>    \/\/ \u901a\u8fc7\u5206\u914d\u5668\u8bf7\u6c42\u7f13\u51b2\u533a<br \/>\n    status_t err &#061; allocator.allocate(width, height, format, layerCount,<br \/>\n                                      usage, &amp;handle, &amp;outStride, mId,<br \/>\n                                      std::move(requestorName));<br \/>\n    if (err &#061;&#061; NO_ERROR) {<br \/>\n        \/\/ \u6210\u529f\u5206\u914d\u540e\u8bbe\u7f6e\u7f13\u51b2\u533a\u53c2\u6570<br \/>\n        setBufferInfo(width, height, format, layerCount, usage, outStride);<br \/>\n        importBuffer(handle); \/\/ \u5bfc\u5165\u7f13\u51b2\u533a\u4ee5\u4f9b\u4f7f\u7528<br \/>\n    }<br \/>\n    return err;<br \/>\n}<\/p>\n<p>Gralloc\u5206\u914d\u5668\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2aBinder\u670d\u52a1\u4ee3\u7406&#xff0c;\u771f\u6b63\u7684\u5206\u914d\u64cd\u4f5c\u5728\u72ec\u7acb\u7684allocator\u8fdb\u7a0b\u4e2d\u6267\u884c\u3002\u8fd9\u79cd\u8bbe\u8ba1\u65e2\u4fdd\u8bc1\u4e86\u5b89\u5168\u6027&#xff08;\u786c\u4ef6\u8d44\u6e90\u8bbf\u95ee\u88ab\u9694\u79bb\u5728\u7279\u6743\u8fdb\u7a0b\u4e2d&#xff09;&#xff0c;\u53c8\u63d0\u4f9b\u4e86\u7075\u6d3b\u6027&#xff08;\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u786c\u4ef6\u5b9e\u73b0\u4e0d\u540c\u7684\u5206\u914d\u7b56\u7565&#xff09;\u3002<\/p>\n<p>\u4e0d\u540c\u7248\u672c\u7684Gralloc\u5b9e\u73b0\u901a\u8fc7\u52a8\u6001\u52a0\u8f7d\u673a\u5236\u9002\u914d&#xff1a;<\/p>\n<table>\n<tr>Gralloc\u7248\u672c\u5f15\u5165\u7248\u672c\u4e3b\u8981\u7279\u6027<\/tr>\n<tbody>\n<tr>\n<td>Gralloc2<\/td>\n<td>Android 8.0<\/td>\n<td>\u57fa\u7840\u5206\u914d\u548c\u6620\u5c04\u529f\u80fd<\/td>\n<\/tr>\n<tr>\n<td>Gralloc3<\/td>\n<td>Android 9.0<\/td>\n<td>\u6539\u8fdb\u7684\u5143\u6570\u636e\u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>Gralloc4<\/td>\n<td>Android 10<\/td>\n<td>\u6807\u51c6\u5316\u7f13\u51b2\u533a\u63cf\u8ff0\u7b26<\/td>\n<\/tr>\n<tr>\n<td>Gralloc5<\/td>\n<td>Android 12<\/td>\n<td>\u589e\u5f3a\u7684\u8de8\u8fdb\u7a0b\u5171\u4eab\u80fd\u529b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u79cd\u7248\u672c\u5316\u8bbe\u8ba1\u4f7f\u5f97Android\u80fd\u591f\u5728\u4e0d\u7834\u574f\u5411\u540e\u517c\u5bb9\u6027\u7684\u60c5\u51b5\u4e0b&#xff0c;\u9010\u6b65\u5f15\u5165\u65b0\u7684\u56fe\u5f62\u7279\u6027\u3002<\/p>\n<h3>3. DMA-BUF\u4e0e\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff1a;\u8de8\u8fdb\u7a0b\u5171\u4eab\u7684\u6280\u672f\u6838\u5fc3<\/h3>\n<p>GraphicBuffer\u8de8\u8fdb\u7a0b\u5171\u4eab\u7684\u6838\u5fc3\u673a\u5236\u5efa\u7acb\u5728DMA-BUF\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff08;fd&#xff09;\u4e4b\u4e0a\u3002DMA-BUF\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u7528\u4e8e\u5171\u4eabDMA\u7f13\u51b2\u533a\u7684\u6846\u67b6&#xff0c;\u5b83\u5141\u8bb8\u4e0d\u540c\u7684\u8bbe\u5907\u9a71\u52a8\u548c\u5b50\u7cfb\u7edf\u4e4b\u95f4\u96f6\u62f7\u8d1d\u5730\u5171\u4eab\u7f13\u51b2\u533a\u3002<\/p>\n<p>\u5f53GraphicBuffer\u88ab\u521b\u5efa\u65f6&#xff0c;\u5e95\u5c42DRM&#xff08;Direct Rendering Manager&#xff09;\u5b50\u7cfb\u7edf\u4f1a\u5206\u914d\u4e00\u5757\u7269\u7406\u5185\u5b58\u7f13\u51b2\u533a&#xff0c;\u5e76\u8fd4\u56de\u4e00\u4e2a\u6216\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u8fd9\u4e9b\u6587\u4ef6\u63cf\u8ff0\u7b26\u6210\u4e3a\u4e86\u8de8\u8fdb\u7a0b\u4f20\u9012\u7684\u5a92\u4ecb&#xff0c;\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u53ef\u4ee5\u901a\u8fc7\u5b83\u4eec\u8bbf\u95ee\u76f8\u540c\u7684\u7269\u7406\u5185\u5b58\u3002<\/p>\n<p>\/\/ \u4f2a\u4ee3\u7801&#xff1a;\u7f13\u51b2\u533a\u5bfc\u51fa\u548c\u5bfc\u5165\u8fc7\u7a0b<br \/>\n\/\/ \u5728\u5206\u914d\u5668\u8fdb\u7a0b\u4e2d<br \/>\nint exportBuffer(buffer_handle_t handle) {<br \/>\n    int fd &#061; -1;<br \/>\n    \/\/ \u901a\u8fc7DRM IOCTL\u8c03\u7528\u83b7\u53d6\u7f13\u51b2\u533a\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26<br \/>\n    drm_prime_handle_to_fd(handle, &amp;fd);<br \/>\n    return fd;<br \/>\n}<\/p>\n<p>\/\/ \u5728\u5ba2\u6237\u7aef\u8fdb\u7a0b\u4e2d<br \/>\nint importBuffer(int fd) {<br \/>\n    buffer_handle_t new_handle &#061; nullptr;<br \/>\n    \/\/ \u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u83b7\u53d6\u7f13\u51b2\u533a\u53e5\u67c4<br \/>\n    drm_prime_fd_to_handle(fd, &amp;new_handle);<br \/>\n    return new_handle;<br \/>\n}<\/p>\n<p>\u8fd9\u79cd\u57fa\u4e8e\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u5171\u4eab\u673a\u5236\u6709\u591a\u4e2a\u4f18\u52bf&#xff1a;<\/p>\n<ul>\n<li>\u96f6\u62f7\u8d1d\u4f20\u8f93&#xff1a;\u6570\u636e\u4e0d\u9700\u8981\u5728\u8fdb\u7a0b\u95f4\u590d\u5236&#xff0c;\u5927\u5927\u63d0\u5347\u4e86\u6027\u80fd<\/li>\n<li>\u5b89\u5168\u6027&#xff1a;\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ef\u4ee5\u901a\u8fc7Binder\u5b89\u5168\u5730\u4f20\u9012&#xff0c;\u63a5\u6536\u65b9\u53ea\u80fd\u8bbf\u95ee\u7f13\u51b2\u533a&#xff0c;\u65e0\u6cd5\u64cd\u4f5c\u5176\u4ed6\u8d44\u6e90<\/li>\n<li>\u786c\u4ef6\u52a0\u901f&#xff1a;DMA-BUF\u88ab\u6240\u6709\u4e3b\u6d41GPU\u548c\u663e\u793a\u63a7\u5236\u5668\u652f\u6301&#xff0c;\u53ef\u4ee5\u5b9e\u73b0\u786c\u4ef6\u52a0\u901f\u7684\u6570\u636e\u5904\u7406<\/li>\n<\/ul>\n<p>\u6ce8\u610f&#xff1a;\u867d\u7136\u6587\u4ef6\u63cf\u8ff0\u7b26\u672c\u8eab\u662f\u6574\u6570&#xff0c;\u4f46\u5b83\u4eec\u5728\u5b9e\u9645\u4f20\u9012\u8fc7\u7a0b\u4e2d\u4f1a\u88ab\u5c01\u88c5\u5728Parcel\u5bf9\u8c61\u4e2d&#xff0c;\u901a\u8fc7Binder\u7684\u8de8\u8fdb\u7a0b\u8c03\u7528\u673a\u5236\u4f20\u8f93\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u786e\u4fdd\u4e86\u63cf\u8ff0\u7b26\u7684\u6b63\u786e\u5f15\u7528\u8ba1\u6570\u548c\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;GraphicBuffer\u7684\u8de8\u8fdb\u7a0b\u4f20\u9012\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4&#xff1a;<\/p>\n<li>\u5206\u914d\u8fdb\u7a0b\u521b\u5efaGraphicBuffer\u5e76\u83b7\u53d6\u5176\u6587\u4ef6\u63cf\u8ff0\u7b26<\/li>\n<li>\u6587\u4ef6\u63cf\u8ff0\u7b26\u88ab\u5c01\u88c5\u5230Parcel\u5bf9\u8c61\u4e2d<\/li>\n<li>\u901a\u8fc7Binder IPC\u5c06Parcel\u53d1\u9001\u5230\u63a5\u6536\u8fdb\u7a0b<\/li>\n<li>\u63a5\u6536\u8fdb\u7a0b\u4eceParcel\u4e2d\u89e3\u5305\u6587\u4ef6\u63cf\u8ff0\u7b26<\/li>\n<li>\u63a5\u6536\u8fdb\u7a0b\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u5bfc\u5165GraphicBuffer<\/li>\n<p>\u8fd9\u4e2a\u8fc7\u7a0b\u5728SurfaceFlinger\u5408\u6210\u591a\u4e2a\u5e94\u7528\u56fe\u5c42\u65f6\u5c24\u4e3a\u5173\u952e&#xff0c;\u6bcf\u4e2a\u5e94\u7528\u7684\u56fe\u5c42\u6570\u636e\u90fd\u901a\u8fc7GraphicBuffer\u5171\u4eab\u7ed9SurfaceFlinger\u8fdb\u7a0b&#xff0c;\u800c\u65e0\u9700\u6602\u8d35\u7684\u6570\u636e\u62f7\u8d1d\u3002<\/p>\n<h3>4. GraphicBuffer\u5728Android\u56fe\u5f62\u7cfb\u7edf\u4e2d\u7684\u5b9e\u9645\u5e94\u7528<\/h3>\n<p>GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u5e94\u7528\u65e0\u5904\u4e0d\u5728&#xff0c;\u4ece\u5e94\u7528\u5c42\u7684UI\u7ed8\u5236\u5230\u7cfb\u7edf\u7ea7\u7684\u663e\u793a\u5408\u6210&#xff0c;\u90fd\u4f9d\u8d56\u5176\u9ad8\u6548\u7684\u6570\u636e\u5171\u4eab\u80fd\u529b\u3002<\/p>\n<h4>4.1 SurfaceFlinger\u4e2d\u7684\u5408\u6210\u64cd\u4f5c<\/h4>\n<p>SurfaceFlinger\u4f5c\u4e3aAndroid\u7684\u5408\u6210\u5668&#xff0c;\u8d1f\u8d23\u5c06\u591a\u4e2a\u5e94\u7528\u7684\u56fe\u5c42\u5408\u6210\u4e3a\u6700\u7ec8\u7684\u5e27\u7f13\u51b2\u533a\u3002\u6bcf\u4e2a\u56fe\u5c42\u90fd\u5bf9\u5e94\u4e00\u4e2aGraphicBuffer&#xff0c;SurfaceFlinger\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5904\u7406\u8fd9\u4e9b\u7f13\u51b2\u533a&#xff1a;<\/p>\n<li>\u7f13\u51b2\u533a\u83b7\u53d6&#xff1a;\u4ece\u6bcf\u4e2a\u56fe\u5c42\u7684BufferQueue\u4e2d\u83b7\u53d6\u6700\u65b0\u7684GraphicBuffer<\/li>\n<li>\u5408\u6210\u89c4\u5212&#xff1a;\u6839\u636e\u56fe\u5c42\u5c5e\u6027&#xff08;\u4f4d\u7f6e\u3001\u900f\u660e\u5ea6\u3001\u53d8\u6362\u77e9\u9635&#xff09;\u786e\u5b9a\u5408\u6210\u7b56\u7565<\/li>\n<li>\u786c\u4ef6\u52a0\u901f&#xff1a;\u5c3d\u53ef\u80fd\u4f7f\u7528GPU\u6216\u4e13\u7528\u786c\u4ef6\u5408\u6210\u5668\u5904\u7406\u5408\u6210\u64cd\u4f5c<\/li>\n<li>\u7ed3\u679c\u8f93\u51fa&#xff1a;\u5c06\u5408\u6210\u540e\u7684\u5e27\u53d1\u9001\u5230\u663e\u793a\u8bbe\u5907<\/li>\n<p>\/\/ \u4f2a\u4ee3\u7801&#xff1a;SurfaceFlinger\u7684\u5408\u6210\u5faa\u73af<br \/>\nvoid SurfaceFlinger::compositeFrame() {<br \/>\n    std::vector&lt;Layer*&gt; layers &#061; getVisibleLayers();<br \/>\n    std::vector&lt;sp&lt;GraphicBuffer&gt;&gt; buffers;<\/p>\n<p>    \/\/ \u6536\u96c6\u6240\u6709\u56fe\u5c42\u7684\u7f13\u51b2\u533a<br \/>\n    for (Layer* layer : layers) {<br \/>\n        sp&lt;GraphicBuffer&gt; buffer &#061; layer-&gt;getBuffer();<br \/>\n        if (buffer !&#061; nullptr) {<br \/>\n            buffers.push_back(buffer);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    \/\/ \u4f7f\u7528\u786c\u4ef6\u5408\u6210\u5668\u8fdb\u884c\u5408\u6210<br \/>\n    if (mHardwareComposer-&gt;supportsComposition(buffers)) {<br \/>\n        mHardwareComposer-&gt;compose(buffers, mOutputBuffer);<br \/>\n    } else {<br \/>\n        \/\/ \u56de\u9000\u5230GPU\u5408\u6210<br \/>\n        composeWithGPU(buffers, mOutputBuffer);<br \/>\n    }<\/p>\n<p>    \/\/ \u63d0\u4ea4\u5230\u663e\u793a\u8bbe\u5907<br \/>\n    mDisplayDevice-&gt;submitFrame(mOutputBuffer);<br \/>\n}<\/p>\n<h4>4.2 MediaCodec\u4e2d\u7684\u89c6\u9891\u5904\u7406<\/h4>\n<p>\u5728\u89c6\u9891\u7f16\u89e3\u7801\u573a\u666f\u4e2d&#xff0c;GraphicBuffer\u7528\u4e8e\u5728MediaCodec\u548c\u663e\u793a\u7cfb\u7edf\u4e4b\u95f4\u9ad8\u6548\u4f20\u9012\u89c6\u9891\u5e27\u3002\u5f53MediaCodec\u89e3\u7801\u89c6\u9891\u5e27\u65f6&#xff0c;\u5b83\u53ef\u4ee5\u5c06\u8f93\u51fa\u76f4\u63a5\u5199\u5165GraphicBuffer&#xff0c;\u7136\u540e\u8be5\u7f13\u51b2\u533a\u53ef\u4ee5\u88ab\u4f20\u9012\u7ed9SurfaceView\u6216TextureView\u8fdb\u884c\u663e\u793a&#xff0c;\u65e0\u9700\u989d\u5916\u7684\u62f7\u8d1d\u64cd\u4f5c\u3002<\/p>\n<p>\u8fd9\u79cd\u673a\u5236\u7279\u522b\u9002\u5408\u9ad8\u5206\u8fa8\u7387\u89c6\u9891\u64ad\u653e&#xff0c;\u56e0\u4e3a\u89c6\u9891\u5e27\u901a\u5e38\u5f88\u5927&#xff0c;\u62f7\u8d1d\u64cd\u4f5c\u4f1a\u6d88\u8017\u5927\u91cfCPU\u8d44\u6e90\u548c\u529f\u8017\u3002\u901a\u8fc7GraphicBuffer\u5171\u4eab&#xff0c;\u89c6\u9891\u89e3\u7801\u548c\u663e\u793a\u53ef\u4ee5\u5b9e\u73b0\u771f\u6b63\u7684\u96f6\u62f7\u8d1d\u6d41\u6c34\u7ebf\u3002<\/p>\n<h4>4.3 \u8de8\u8fdb\u7a0b\u6e32\u67d3\u7684\u9ad8\u7ea7\u5e94\u7528<\/h4>\n<p>\u5728\u67d0\u4e9b\u9ad8\u7ea7\u5e94\u7528\u573a\u666f\u4e2d&#xff0c;GraphicBuffer\u7684\u8de8\u8fdb\u7a0b\u80fd\u529b\u88ab\u53d1\u6325\u5230\u6781\u81f4\u3002\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\u5c4f\u5e55\u5f55\u5236&#xff1a;\u5f55\u5c4f\u5e94\u7528\u901a\u8fc7ImageReader\u83b7\u53d6SurfaceFlinger\u7684\u8f93\u51fa&#xff0c;\u5b9e\u9645\u4e0a\u662f\u901a\u8fc7GraphicBuffer\u5171\u4eab\u5e27\u6570\u636e<\/li>\n<li>AR\/\u5e94\u7528&#xff1a;\u76f8\u673a\u9884\u89c8\u5e27\u901a\u8fc7GraphicBuffer\u5171\u4eab\u7ed9AR\u5e94\u7528\u8fdb\u884c\u5904\u7406\u548c\u6e32\u67d3<\/li>\n<li>\u591a\u7a97\u53e3\u6e32\u67d3&#xff1a;\u6bcf\u4e2a\u7a97\u53e3\u7684\u6e32\u67d3\u7ed3\u679c\u901a\u8fc7GraphicBuffer\u4f20\u9012\u7ed9SurfaceFlinger\u8fdb\u884c\u5408\u6210<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u5e94\u7528\u90fd\u4f9d\u8d56GraphicBuffer\u7684\u9ad8\u6548\u8de8\u8fdb\u7a0b\u5171\u4eab\u80fd\u529b&#xff0c;\u5b9e\u73b0\u4e86\u590d\u6742\u7684\u6570\u636e\u6d41\u5904\u7406\u800c\u4e0d\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<h3>5. \u6027\u80fd\u4f18\u5316\u4e0e\u5e38\u89c1\u95ee\u9898\u6392\u67e5<\/h3>\n<p>\u867d\u7136GraphicBuffer\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u8de8\u8fdb\u7a0b\u5171\u4eab\u673a\u5236&#xff0c;\u4f46\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u4ecd\u7136\u9700\u8981\u6ce8\u610f\u6027\u80fd\u4f18\u5316\u548c\u95ee\u9898\u6392\u67e5\u3002<\/p>\n<h4>5.1 \u7f13\u51b2\u533a\u7ba1\u7406\u7b56\u7565<\/h4>\n<p>\u5408\u7406\u7684\u7f13\u51b2\u533a\u7ba1\u7406\u662f\u4fdd\u8bc1\u56fe\u5f62\u6027\u80fd\u7684\u5173\u952e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5&#xff1a;<\/p>\n<ul>\n<li>\u7f13\u51b2\u533a\u961f\u5217\u6df1\u5ea6&#xff1a;\u6839\u636e\u5e94\u7528\u573a\u666f\u8c03\u6574BufferQueue\u7684\u6df1\u5ea6&#xff0c;\u592a\u6d45\u4f1a\u5bfc\u81f4\u5361\u987f&#xff0c;\u592a\u6df1\u4f1a\u589e\u52a0\u5ef6\u8fdf\u548c\u5185\u5b58\u4f7f\u7528<\/li>\n<li>\u7f13\u51b2\u533a\u91cd\u7528&#xff1a;\u5c3d\u53ef\u80fd\u91cd\u7528\u7f13\u51b2\u533a&#xff0c;\u907f\u514d\u9891\u7e41\u5206\u914d\u548c\u91ca\u653e\u5e26\u6765\u7684\u5f00\u9500<\/li>\n<li>\u683c\u5f0f\u9009\u62e9&#xff1a;\u9009\u62e9\u9002\u5408\u786c\u4ef6\u652f\u6301\u7684\u50cf\u7d20\u683c\u5f0f&#xff0c;\u907f\u514d\u683c\u5f0f\u8f6c\u6362\u5f00\u9500<\/li>\n<\/ul>\n<p>\/\/ \u793a\u4f8b&#xff1a;\u914d\u7f6eBufferQueue\u4ee5\u83b7\u5f97\u6700\u4f73\u6027\u80fd<br \/>\nvoid configureBufferQueue(sp&lt;IGraphicBufferProducer&gt; producer) {<br \/>\n    \/\/ \u8bbe\u7f6e\u6700\u5927\u7f13\u51b2\u533a\u6570\u91cf<br \/>\n    producer-&gt;setMaxDequeuedBufferCount(4);<br \/>\n    \/\/ \u8bbe\u7f6e\u7f13\u51b2\u533a\u5c3a\u5bf8\u548c\u683c\u5f0f<br \/>\n    producer-&gt;setDefaultBufferSize(1920, 1080);<br \/>\n    producer-&gt;setDefaultBufferFormat(HAL_PIXEL_FORMAT_RGBA_8888);<br \/>\n    \/\/ \u8bbe\u7f6e\u4f7f\u7528\u6807\u5fd7<br \/>\n    uint64_t usage &#061; GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE;<br \/>\n    producer-&gt;setConsumerUsageBits(usage);<br \/>\n}<\/p>\n<h4>5.2 \u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/h4>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;GraphicBuffer\u76f8\u5173\u7684\u95ee\u9898\u901a\u5e38\u8868\u73b0\u4e3a\u6027\u80fd\u4e0b\u964d\u3001\u89c6\u89c9\u5f02\u5e38\u6216\u7cfb\u7edf\u5d29\u6e83\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6cd5&#xff1a;<\/p>\n<table>\n<tr>\u95ee\u9898\u73b0\u8c61\u53ef\u80fd\u539f\u56e0\u89e3\u51b3\u65b9\u6848<\/tr>\n<tbody>\n<tr>\n<td>\u754c\u9762\u5361\u987f<\/td>\n<td>\u7f13\u51b2\u533a\u5206\u914d\u8fc7\u6162<\/td>\n<td>\u9884\u70ed\u7f13\u51b2\u533a\u6c60&#xff0c;\u907f\u514d\u5b9e\u65f6\u5206\u914d<\/td>\n<\/tr>\n<tr>\n<td>\u56fe\u5f62\u6495\u88c2<\/td>\n<td>\u7f13\u51b2\u533a\u540c\u6b65\u4e0d\u5f53<\/td>\n<td>\u6b63\u786e\u4f7f\u7528\u5e27\u56de\u8c03\u673a\u5236<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u6cc4\u6f0f<\/td>\n<td>\u7f13\u51b2\u533a\u672a\u6b63\u786e\u91ca\u653e<\/td>\n<td>\u68c0\u67e5\u7f13\u51b2\u533a\u751f\u547d\u5468\u671f\u7ba1\u7406<\/td>\n<\/tr>\n<tr>\n<td>\u9ed1\u5c4f\u6216\u65e0\u5185\u5bb9<\/td>\n<td>\u7f13\u51b2\u533a\u683c\u5f0f\u4e0d\u5339\u914d<\/td>\n<td>\u9a8c\u8bc1\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u683c\u5f0f\u8bbe\u7f6e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u63d0\u793a&#xff1a;\u4f7f\u7528Android\u7cfb\u7edf\u63d0\u4f9b\u7684\u8c03\u8bd5\u5de5\u5177&#xff08;\u5982dumpsys SurfaceFlinger&#xff09;\u53ef\u4ee5\u83b7\u53d6GraphicBuffer\u7684\u8be6\u7ec6\u72b6\u6001\u4fe1\u606f&#xff0c;\u5bf9\u4e8e\u6392\u67e5\u95ee\u9898\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<h4>5.3 \u9ad8\u7ea7\u8c03\u8bd5\u6280\u5de7<\/h4>\n<p>\u5bf9\u4e8e\u590d\u6742\u7684\u95ee\u9898&#xff0c;\u53ef\u80fd\u9700\u8981\u6df1\u5165\u8c03\u8bd5GraphicBuffer\u7684\u72b6\u6001\u548c\u6d41\u8f6c&#xff1a;<\/p>\n<p># \u67e5\u770bSurfaceFlinger\u72b6\u6001\u548c\u7f13\u51b2\u533a\u4fe1\u606f<br \/>\nadb shell dumpsys SurfaceFlinger<\/p>\n<p># \u76d1\u63a7\u56fe\u5f62\u6027\u80fd\u6307\u6807<br \/>\nadb shell dumpsys gfxinfo &lt;package-name&gt;<\/p>\n<p># \u4f7f\u7528GPU\u8c03\u8bd5\u5de5\u5177<br \/>\nadb shell setprop debug.hwui.profile true<\/p>\n<p>\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u63d0\u4f9b\u8be6\u7ec6\u7684\u7f13\u51b2\u533a\u72b6\u6001\u3001\u5e27\u7387\u548c\u6027\u80fd\u6570\u636e&#xff0c;\u5e2e\u52a9\u8bc6\u522b\u74f6\u9888\u548c\u95ee\u9898\u6839\u6e90\u3002<\/p>\n<p>GraphicBuffer\u4f5c\u4e3aAndroid\u56fe\u5f62\u7cfb\u7edf\u7684\u6838\u5fc3\u7ec4\u4ef6&#xff0c;\u5176\u8bbe\u8ba1\u548c\u5b9e\u73b0\u4f53\u73b0\u4e86\u7cfb\u7edf\u7ea7\u8f6f\u4ef6\u5bf9\u6027\u80fd\u548c\u8d44\u6e90\u7684\u7cbe\u7ec6\u628a\u63a7\u3002\u901a\u8fc7\u6df1\u5165\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u548c\u5e94\u7528\u573a\u666f&#xff0c;\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u66f4\u597d\u5730\u4f18\u5316\u56fe\u5f62\u6027\u80fd&#xff0c;\u6784\u5efa\u6d41\u7545\u9ad8\u6548\u7684Android\u5e94\u7528\u3002\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u7ed3\u5408\u786c\u4ef6\u7279\u6027\u548c\u5e94\u7528\u9700\u6c42\u7075\u6d3b\u8fd0\u7528GraphicBuffer\u7684\u7279\u6027&#xff0c;\u5f80\u5f80\u80fd\u591f\u5e26\u6765\u663e\u8457\u7684\u6027\u80fd\u63d0\u5347\u548c\u7528\u6237\u4f53\u9a8c\u6539\u5584\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ece\u96f6\u6784\u5efa&#xff1a;\u6df1\u5165\u7406\u89e3GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\u4e0e\u8de8\u8fdb\u7a0b\u4f20\u9012\u673a\u5236<br \/>\n\u5728Android\u56fe\u5f62\u7cfb\u7edf\u7684\u590d\u6742\u67b6\u6784\u4e2d&#xff0c;GraphicBuffer\u5982\u540c\u4e00\u4f4d\u65e0\u58f0\u7684\u8c03\u5ea6\u8005&#xff0c;\u627f\u8f7d\u7740\u6bcf\u4e00\u5e27\u753b\u9762\u7684\u6570\u636e\u6d41\u8f6c\u4e0e\u5171\u4eab\u3002\u5bf9\u4e8e\u4e2d\u7ea7Android\u7cfb\u7edf\u5f00\u53d1\u5de5\u7a0b\u5e08\u548c\u56fe\u5f62\u7cfb\u7edf\u7814\u7a76\u8005\u800c\u8a00&#xff0c;\u6df1\u5165\u7406\u89e3GraphicBuffer\u7684\u5e95\u5c42\u673a\u5236\u4e0d\u4ec5\u662f\u6027\u80fd\u4f18\u5316\u7684\u5173\u952e&#xff0c;\u66f4\u662f\u638c\u63e1\u591a\u8fdb\u7a0b\u95f4\u9ad8\u6548\u6570\u636e\u4f20\u9012\u7684\u6838\u5fc3\u6280\u672f\u3002\u672c\u6587\u5c06\u5e26\u60a8\u4ece\u96f6\u5f00\u59cb&amp;#xff0<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8382,8381,8384,8383],"topic":[],"class_list":["post-76952","post","type-post","status-publish","format-standard","hentry","category-server","tag-android","tag-graphicbuffer","tag-surfaceflinger","tag-8383"],"yoast_head":"<!-- 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content=\"\u4ece\u96f6\u6784\u5efa&#xff1a;\u6df1\u5165\u7406\u89e3GraphicBuffer\u5728Android\u56fe\u5f62\u6808\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\u4e0e\u8de8\u8fdb\u7a0b\u4f20\u9012\u673a\u5236 \u5728Android\u56fe\u5f62\u7cfb\u7edf\u7684\u590d\u6742\u67b6\u6784\u4e2d&#xff0c;GraphicBuffer\u5982\u540c\u4e00\u4f4d\u65e0\u58f0\u7684\u8c03\u5ea6\u8005&#xff0c;\u627f\u8f7d\u7740\u6bcf\u4e00\u5e27\u753b\u9762\u7684\u6570\u636e\u6d41\u8f6c\u4e0e\u5171\u4eab\u3002\u5bf9\u4e8e\u4e2d\u7ea7Android\u7cfb\u7edf\u5f00\u53d1\u5de5\u7a0b\u5e08\u548c\u56fe\u5f62\u7cfb\u7edf\u7814\u7a76\u8005\u800c\u8a00&#xff0c;\u6df1\u5165\u7406\u89e3GraphicBuffer\u7684\u5e95\u5c42\u673a\u5236\u4e0d\u4ec5\u662f\u6027\u80fd\u4f18\u5316\u7684\u5173\u952e&#xff0c;\u66f4\u662f\u638c\u63e1\u591a\u8fdb\u7a0b\u95f4\u9ad8\u6548\u6570\u636e\u4f20\u9012\u7684\u6838\u5fc3\u6280\u672f\u3002\u672c\u6587\u5c06\u5e26\u60a8\u4ece\u96f6\u5f00\u59cb&amp;#xff0\" \/>\n<meta property=\"og:url\" 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