* drawing api

* add drawing test

* yuv420sp drawing

* enable simpleocv in webassembly build

for obsessive

* quantize and dequantize tests

* unify activation and usability function

* drop NCNN_REQUANT cmake option, test dequantize requantize pack8, fix webassembly build

* benchmark use requantize int8 model

* arm neon optimization for conv3x3s1 winograd42

* better condition

* Update test_convolution.cpp

* Update test_convolution.cpp

* more proper conditions

* arm neon optimization for general im2col sgemm pack4

* add sgemm

* wip

* wip

* fix armv7 build

* more conditions blah blah

* code format

* fix convolution

* move packed convolution to seperated header source

* unify weight data bf16

* proper conditions

* conv3x3s2 sgemm pack4 test

* integer warpaffine

* fix some corner case

* fix yuv420sp border value

* workaround nvidia driver crash
* workaround radv buffer_ld1 zero bug
* fix offset elempack

* support pytorch adaptive pool
* support onnx2ncnn adaptive pool convert
* support ncnnoptimize adaptive pool param write

* fix adaptive pool out_shape order

* fix adaptive pool out_shape order, H and W can be either a int
add test case, set support_vulkan = false Pooling_vulkan::create_pipeline

* review adaptive pool

* fix typo

* add adaptive pool forward in pooling_x86.cpp pooling_arm.cpp
fix out_w, out_h id naming convention

* fix typo

* don't support packing, bf16, int8, image for adaptive pool

* Restyled by clang-format

* Restyled by astyle

* Restyled by clang-format

* Restyled by astyle

Co-authored-by: Restyled.io <commits@restyled.io>

* perf(innerproduct-arm): add aarch64 gemm

* fix(innerproduct): fix compilation errror

* fix(armv7-innerproduct): fix armv7 compilation error

* fix(innerproduct): fix gemm param

* fix(int8): update mock scales and fix runtime error

* fix(compilation): fix compilation error

* build shared lib and enable lto

* reserved for layer and option

* allocator pimpl

* datareader pimpl

* paramdict pimpl, disable copy assign for allocator and datareader

* modelbin pimpl

* net extractor pimpl

* gpu pimple

* disable copy assign vulkandevice, code format

* command pimpl, dummy image readonly

* pipeline pipelinecache pimpl, export platform class

* code format, export simple family

* update ci

* disable lto on android armv7, merge webassembly ci

* link libgcc, fix macos dylib version

* pipeline pimpl, gpu info pimpl

* destroy gpu info after vulkan device

* ignore msvc stl class warning

* fix ncnn_paramdict_get_float return type

* fix vktransfer upload fp16 without flatten, add command test

* Updated test_cpu. Using test_cpu_set for __APPLE__ platforms.

* Updated test_cpu. Added simple test for powersave.

* Updated test_cpu. Improved code covarage for `test_cpu_omp`.

* SSE2: BatchNorm

* Fixed batch norm in AVX configuration

* Optimized register size switch

* Attempt to pass CI

* Attempt to pass CI

* Bias op

* Element wise ops

* Support packing on x86 by default

* Fixed macro range in bias

* Use aligned read for packed data

* Update testutil.h

* Update pooling_x86.cpp

* Support wasn SIMD

* Fix emscripten compiler flags

* fix build

* more ci fix

* concat x86 pack4

* flatten x86 pack4

* more x86 pack4

* ci pass

* fix

* enable sse2 mathfun

* enable --experimental-wasm-simd

Co-authored-by: nihui <shuizhuyuanluo@126.com>
Co-authored-by: nihuini <nihuini@tencent.com>

* fix compiling failure on cxx14

* fix compile failure when NCNN_PIXEL off

* do not export pixel api when NCNN_PIXEL off

* disable squeezenet test when NCNN_PIXEL off

* do not build ncnn2table and examples when NCNN_PIXEL off

* make cmakedefine header independent

* restore platform.h.in

Co-authored-by: nihui <shuizhuyuanluo@126.com>
Co-authored-by: nihuini <nihuini@tencent.com>