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OpenCV-Erlang/Elixir binding.
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py_src/evision_extra_functions.py
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# This file contains extra functions that were added in evision
gpumat_to_pointer_elixir = ''' @doc """
Get raw pointers
##### Positional Arguments
- **self**. `Evision.CUDA.GpuMat.t()`
##### Keyword Arguments
- **mode**, either `:local` or `:cuda_ipc`
"""
@spec to_pointer(Evision.CUDA.GpuMat.t()) :: {:ok, list(integer())} | {:error, String.t()}
def to_pointer(%{ref: ref}) do
:evision_nif.cuda_cuda_GpuMat_to_pointer(img: ref, mode: :local)
end
@spec to_pointer(Evision.CUDA.GpuMat.t(), [mode: :local | :cuda_ipc]) :: {:ok, list(integer())} | {:error, String.t()}
def to_pointer(%{ref: ref}, opts) when is_list(opts) do
opts = Keyword.validate!(opts || [], [mode: :local])
:evision_nif.cuda_cuda_GpuMat_to_pointer([img: ref] ++ opts)
end
defp compact_type(type) when is_atom(type), do: type
defp compact_type({:s, 8}), do: :s8
defp compact_type({:u, 8}), do: :u8
defp compact_type({:s, 16}), do: :s16
defp compact_type({:u, 16}), do: :u16
defp compact_type({:s, 32}), do: :s32
defp compact_type({:u, 32}), do: :u32
defp compact_type({:s, 64}), do: :s64
defp compact_type({:u, 64}), do: :u64
defp compact_type({:f, 16}), do: :f16
defp compact_type({:f, 32}), do: :f32
defp compact_type({:f, 64}), do: :f64
@doc """
Create CUDA GpuMat from a shared CUDA device pointer
##### Positional Arguments
- **device_pointer**, `list(integer())`.
This can be either a local pointer or an IPC pointer.
However, please note that IPC pointers have to be generated from
another OS process (Erlang process doesn't count).
- **dtype**, `tuple() | atom()`
Data type.
- **shape**, `tuple()`
The shape of the shared image. It's expected to be either
- `{height, width, channels}`, for any 2D image that has 1 or multiple channels
- `{height, width}`, for any 1-channel 2D image
- `{rows}`
"""
@spec from_pointer(list(integer()), atom() | {atom(), integer()}, tuple()) :: Evision.CUDA.GpuMat.t() | {:error, String.t()}
def from_pointer(device_pointer, dtype, shape) when is_list(device_pointer) and is_tuple(shape) do
positional = [
device_pointer: device_pointer,
dtype: compact_type(dtype),
shape: shape
]
:evision_nif.cuda_cuda_GpuMat_from_pointer(positional)
|> to_struct()
end
@doc """
Create CUDA GpuMat from a shared CUDA device pointer
##### Positional Arguments
- **device_pointer**, `list(integer())`.
This can be either a local pointer or an IPC pointer.
However, please note that IPC pointers have to be generated from
another OS process (Erlang process doesn't count).
- **dtype**, `tuple() | atom()`
Data type.
- **shape**, `tuple()`
The shape of the shared image. It's expected to be either
- `{height, width, channels}`, for any 2D image that has 1 or multiple channels
- `{height, width}`, for any 1-channel 2D image
- `{rows}`
##### Keyword Arguments
- **device_id**, `non_neg_integer`.
GPU Device ID, default to `0`.
"""
@spec from_pointer(list(integer()), atom() | {atom(), integer()}, tuple(), [device_id: non_neg_integer()]) :: Evision.CUDA.GpuMat.t() | {:error, String.t()}
def from_pointer(device_pointer, dtype, shape, opts) when is_list(device_pointer) and is_tuple(shape) and is_list(opts) do
opts = Keyword.validate!(opts || [], [device_id: 0])
positional = [
device_pointer: device_pointer,
dtype: compact_type(dtype),
shape: shape
]
:evision_nif.cuda_cuda_GpuMat_from_pointer(positional ++ Evision.Internal.Structurise.from_struct(opts))
|> to_struct()
end
'''
gpumat_to_pointer_erlang = """
to_pointer(#{class := 'Elixir.Evision.CUDA.GpuMat', ref := Ref}) ->
evision_nif:cuda_cuda_GpuMat_to_pointer([{img, Ref}, {mode, local}]).
to_pointer(#{class := 'Elixir.Evision.CUDA.GpuMat', ref := Ref}, Mode) ->
evision_nif:cuda_cuda_GpuMat_to_pointer([{img, Ref}, {mode, Mode}]).
from_pointer(DevicePointer, DataType, Shape) when is_list(DevicePointer) ->
evision_nif:cuda_cuda_GpuMat_from_pointer([{device_pointer, DevicePointer}, {dtype, DataType}, {shape, Shape}]).
"""
extra_functions = {
"CUDA.GpuMat": {
"elixir": gpumat_to_pointer_elixir,
"erlang": gpumat_to_pointer_erlang,
"gleam": gpumat_to_pointer_erlang
}
}
evision_extra_functions = list(extra_functions.keys())