Adding files outside $(LOCAL_PATH) is a bad idea. It generates output files
to an unexpected directory. In this case, it's
out/target/external/skia/src/images/SkImageDecoder_libjpeg.o
It's not in $(PRODUCT_OUT), which is not correct.
Worse, it makes the build system be unable to build different
architectures (arm and x86) simultaneously, since the output files
conflcit.
Seems we can just remove SkImageDecoder_libjpeg.cpp since it's
already in libskia.
Change-Id: I3e7533126ef60fe2fd424fdc777760e73c93489b
1) Add the include path for jni.h.
2) Rename InitCheck() and read_at() to initCheck() and readAt(),
repectively in StreamSource, as done in DataSource.
3) Add back the definition of SkJPEGImageDecoder to jpeg_decoder_bench.cpp.
Need to do so because SkJPEGImageDecoder is not defined in a header file.
Add StreamSource, which wraps a SkStream to a DataSource.
Add SkOmxPixelRef, which holds a MediaBuffer.
Test OmxJpegImageDecoder by a Jpeg decoder bench.
