x264使用android opencl加速速，求解，我的这个是什么问题

来源：蜘蛛抓取(WebSpider) 时间：2016-08-21 09:51 标签： android opencl加速
Linux（27）
common/opencl.c: 在函数‘x264_opencl_cache_load’中:
common/opencl.c:154:19: 错误：‘x264_opencl_source_hash’未声明(在此函数内第一次使用)
CHECK_STRING( x264_opencl_source_hash );
common/opencl.c:143:30: 附注：in definition of macro ‘CHECK_STRING’
size_t len = strlen( STR );\
common/opencl.c:154:19: 附注：每个未声明的标识符在其出现的函数内只报告一次
CHECK_STRING( x264_opencl_source_hash );
common/opencl.c:143:30: 附注：in definition of macro ‘CHECK_STRING’
size_t len = strlen( STR );\
&span style=&color:#ff0000;&&common/opencl.c: 在函数‘x264_opencl_cache_save’中:
common/opencl.c:204:12: 错误：‘x264_opencl_source_hash’未声明(在此函数内第一次使用)
fputs( x264_opencl_source_hash, fp );
common/opencl.c: 在函数‘x264_opencl_compile’中:
common/opencl.c:264:43: 错误：‘x264_opencl_source’未声明(在此函数内第一次使用)
const char *strptr = (const char*)x264_opencl_&/span&
加入红色部分
./configure --enable-static --disable-opencl
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H.264（54）
The increasing computation power of massive parallel architectures such as modern graphics devices can be used to speed-up the encoding of H.264 video material. Compared to plain hardware solutions, graphics device powered encoders have the advantage of
much lower initial costs and at the same time offer the flexibility of boosting the performance with future device upgrades. In addition, computers of today already include high performance graphics devices, which improve encoding times with nearly zero extra
costs. While other standalone GPU accelerated encoding solutions exist for H.264, this work shows the first working parallelization of the open source H.264 encoder x264 using OpenCL.
In favor of higher encoding speeds, better device utilization as well as better adaption to the encoder architecture, the serial design was later replaced by a more autonomous OpenCL working thread approach. The new working thread pipeline was optimized
by using principles from the RISC architecture. More precisely, the estimation and selection modules were stripped down to a single process, moving the extracted functionality to discrete modules. In a final step, the sub-sequential Motion Estimation, Transformation
and Quantization processes were ported to OpenCL and merged into the pipeline as well.
Considering the fact that only a fraction of the motion estimation capabilities have been ported to OpenCL, the OpenCL powered encoding is up to 55% faster than the original Full Search based encoding of the unmodified x264. While other GPU solutions claim
up to 20x speedup, independent tests against unmodified x264 shows similar gains as our implementation for FullHD. Furthermore, the current work is the first open-source, working integration into the x264 encoder that enables it to profit from the computing
power of high performance graphics devices.
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用合作网站帐户直接登录我日 今天晚上编译那个opencl版的x264 结果老不成功_ati吧_百度贴吧
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我日 今天晚上编译那个opencl版的x264 结果老不成功收藏
结果是我望装opencl的sdk了我发现我智商真是碉堡了去死了算了
和张大佛爷、二月红一起去探秘矿洞墓穴！
晚上Ubuntu下想玩Minecraft 半天没搞对 结果是没装JRE……我才不说装上还不好使呢……
哈我还是去洗洗睡了你也晚安
孩子，你实力不够不是那范就别勉强
楼主，你好，我这俩天也在编译这个，而且我也安装了opencl的开发环境，但是编译不过去，希望楼主给些指点
不以美貌惊天下,全靠卖萌动世人.
性能能提高多少？
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