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Summary:
Pull Request resolved: https://github.com/pytorch/vision/pull/4571



Fixing windows build for `torchvision` when `MOBILE` is defined. In `csrc/vision.cpp`, since `PyMODINIT_FUNC` depends on `Python.h` I added the same condition for `PyMODINIT_FUNC` as the one for `import <PyTorch.h>`.

Reviewed By: malfet

Differential Revision: D31488734

fbshipit-source-id: fd52a9ab161288d9c8bf3b9e0ab9da856a4ebadb
Co-authored-by: Mengwei Liu <larryliu@fb.com>

* WIP

* cleaner code

* Add tests

* Add docs

* Assert dtype

* put back check

* Address comments
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>

* initial commit

* initial commit

* flake8

* last nits
Co-authored-by: Prabhat Roy <prabhatroy@fb.com>

* Update gpu atomics include path

THC is being removed, and this header now lives in ATen.
See pytorch/pytorch#65470.

* Empty commit to trigger build
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>

* Windows use size_t

* Temporarily pin jpeg <=9b

* Temporarily pin jpeg ==9c

* Remove pinning.

* Add deprecation warnings on vision::models

* Change the C++ example.

* Chage readme.

* Update deprecation warning.

* WIP on fixing index overflow issue

* Fixed backward pass for large num_kernels

* Fixed clang formatting

* Fixed GET_BLOCKS int/int64_t types issue
Co-authored-by: vfdev-5 <vfdev-5@gmail.com>
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>

* Fixed a couple of typos and removed unnecessary bracket

* Fixed clang error

[FBcode->GH] Port quantize_val and dequantize_val into torchvision to avoid at::native and android xplat incompatibility (#4311)

Summary:
This diff ports `quantize_val` and `dequantize_val` from at::native to torchvision because native kernels are incompatible with android xplat builds (see D30234056).

This should only be temporary until we find a way to move those functions out of at::native, or until the at::native / android incompatibility disappears.

Reviewed By: fmassa

Differential Revision: D30393619

fbshipit-source-id: 18b7b1b349ad9a24088a120e23da7535f7fa7ddc
Co-authored-by: Nicolas Hug <nicolashug@fb.com>

* Unpinned the libjpeg version and fixed jpeg_mem_dest's size type Windows BC issue

* Temporarily get back pinned jpeg lib in order to run tests on CircleCI

* Revert "Temporarily get back pinned jpeg lib in order to run tests on CircleCI"

This reverts commit ab18a354150f750256b61911e54aa48621ef24cd.

* Used using instead of typedef and Fixed comment typo
Co-authored-by: Zhongkai Zhu <zhongkai@fb.com>
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>

* document video_sampler.

* minor docs for decoder.cpp

* descriptive comments for the stream.c

* descriptive comments for decoder.cpp

* per-stream descriptive comments

* Fixing CLANG hopefully

* addressing prabhat's comments

* typo I think
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>

* interlaced png images
Co-authored-by: Vincent Moens <vmoens@fb.com>

* WIP on backward op interpolation with AA

* Removed cuda tests and reformat cpp code

* Fixed clang wrong formatting

* Added channels last test case

* Added CUDA support for backward pass, interpolation with AA

* Removed unused buffers
Co-authored-by: vfdev-5 <vfdev-5@gmail.com>

* WIP on backward op interpolation with AA

* Removed cuda tests and reformat cpp code

* Fixed clang wrong formatting

* Added channels last test case
Co-authored-by: vfdev-5 <vfdev-5@gmail.com>
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>

Co-authored-by: Nicolas Hug <nicolashug@fb.com>
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>

* Fixed some ffmpeg deprecation warnings in decoder

* Fixed clang error
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>

* Fixed comparison warnings in audio_stream and video_stream

* Fixed clang error

This reverts commit f6b6b510.

* Fixed read_image bug

* Removed unused import

* Skip tests if cv2 unavailable

* Removed cv2 dependency

* remove unused functions

* shut up annoying warnings via cast

* prabhat's comments

* Fixed clang format error
Co-authored-by: Prabhat Roy <prabhatroy@fb.com>

Co-authored-by: Francisco Massa <fvsmassa@gmail.com>

Co-authored-by: Prabhat Roy <prabhatroy@fb.com>

Co-authored-by: Prabhat Roy <prabhatroy@fb.com>

* Added CUDA support for interpolation AA bilinear/bicubic

* Fixed code formatting error

* Fixed cuda tests on cpu-only builds

* Fixed cuda internal torch check for bicubic mode

* Added support for bicubic mode with AA

* Updated comment in the test

Co-authored-by: James Thewlis <james@unitary.ai>

* WIP Added antialias option to transforms.functional.resize

* Updates according to the review

* Excluded these C++ files for iOS build

* Added support for mixed downsampling/upsampling

* Fixed heap overflow caused by explicit loop unrolling

* Applied PR review suggestions
- used pytest parametrize instead unittest
- cast to scalar_t ptr
- removed interpolate aa files for ios/android keeping original cmake version

* WIP

* clang

* docs

* extracted out common utils

* Use better quantization function and pass tensors as parameters

* proper dequantization

* Some tests

* Dequantization optimization, seems to gain a few ms

* clang-format

* again

* more correct test. Had to remove optimization although it almost works

* Also test aligned=True

* remove useless part

* more docs and comments

* Put back optimization with more robust test

* Added check for index upper bound

* avoid possible overflow

* Move common function into common.h

* oops

* scale=1,zero_point=0 makes more sense

* Force batch size of 1 to prevent any indexingbug

* format

* format again

* updated docstring

* put back description comment for pre_calc_bilinear_interpolate

* revert most changes to docstring as it's taken care of in another PR

This reverts commit 3bfdb427.

* minor clean up

* do same for ps_roialign
Co-authored-by: Francisco Massa <fvsmassa@gmail.com>