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Currently the scan uses Boyer-moore method and its performance is good. but, it can be optimized from an implementation of view. The original scan code is implemented by byte array and index-based access. In _scan_for_start_code(), the index is increasing from start to end and the base address of the byte array is referred to as return value. In the case, index-based access can be replaced by pointer access, which improve the performance by removing index-related operations. Its performace is enhanced by approximately 8% on arm-based embedded devices. Although it seems trivial, it can affect the overall performance because the _scan_for_start_code() function is very often called when H.264/H.265 video is played. In addition, the technique can apply for all architectures and it is good in view of readability and maintainability. https://bugzilla.gnome.org/show_bug.cgi?id=731442 |
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| .. | ||
| .gitignore | ||
| base.h | ||
| gstadapter.c | ||
| gstadapter.h | ||
| gstbaseparse.c | ||
| gstbaseparse.h | ||
| gstbasesink.c | ||
| gstbasesink.h | ||
| gstbasesrc.c | ||
| gstbasesrc.h | ||
| gstbasetransform.c | ||
| gstbasetransform.h | ||
| gstbitreader-docs.h | ||
| gstbitreader.c | ||
| gstbitreader.h | ||
| gstbytereader-docs.h | ||
| gstbytereader.c | ||
| gstbytereader.h | ||
| gstbytewriter-docs.h | ||
| gstbytewriter.c | ||
| gstbytewriter.h | ||
| gstcollectpads.c | ||
| gstcollectpads.h | ||
| gstdataqueue.c | ||
| gstdataqueue.h | ||
| gstflowcombiner.c | ||
| gstflowcombiner.h | ||
| gstindex.c | ||
| gstindex.h | ||
| gstmemindex.c | ||
| gstpushsrc.c | ||
| gstpushsrc.h | ||
| gstqueuearray.c | ||
| gstqueuearray.h | ||
| gsttypefindhelper.c | ||
| gsttypefindhelper.h | ||
| Makefile.am | ||
| README | ||
Base classes ------------ GstBaseSink FIXME: not much point making it operate in pull mode as a generic base class I guess...