mirror of
https://github.com/matrix-construct/construct
synced 2024-05-20 03:43:47 +02:00
128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_MAGICK_H
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/// GraphicsMagick Library Interface
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namespace ircd::magick
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{
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IRCD_EXCEPTION(ircd::error, error)
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struct job;
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struct crop;
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struct shave;
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struct scale;
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struct thumbnail;
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struct thumbcrop;
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struct init;
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extern const info::versions version_api, version_abi;
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}
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/// Composite thumbnailer to resize close to the requested dimension but
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/// preserving original aspect ratio; then crop to requested dimension.
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struct ircd::magick::thumbcrop
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{
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using dimensions = std::pair<size_t, size_t>; // x, y
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using result_closure = std::function<void (const const_buffer &)>;
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thumbcrop(const const_buffer &in,
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const dimensions &,
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const result_closure &);
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};
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/// Fast thumbnailer
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struct ircd::magick::thumbnail
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{
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using dimensions = std::pair<size_t, size_t>; // x, y
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using result_closure = std::function<void (const const_buffer &)>;
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thumbnail(const const_buffer &in,
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const dimensions &,
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const result_closure &);
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};
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/// Basic resize (library selected algorithm)
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struct ircd::magick::scale
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{
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using dimensions = std::pair<size_t, size_t>; // x, y
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using result_closure = std::function<void (const const_buffer &)>;
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scale(const const_buffer &in,
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const dimensions &,
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const result_closure &);
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};
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/// Shave off sides (center-crop to dimensions)
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struct ircd::magick::shave
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{
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using offset = std::pair<ssize_t, ssize_t>; // x, y
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using dimensions = std::pair<size_t, size_t>; // x, y
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using result_closure = std::function<void (const const_buffer &)>;
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shave(const const_buffer &in,
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const dimensions &,
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const offset &,
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const result_closure &);
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};
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/// Crop to dimensions at offset
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struct ircd::magick::crop
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{
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using offset = std::pair<ssize_t, ssize_t>; // x, y
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using dimensions = std::pair<size_t, size_t>; // x, y
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using result_closure = std::function<void (const const_buffer &)>;
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crop(const const_buffer &in,
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const dimensions &,
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const offset &,
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const result_closure &);
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};
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struct ircd::magick::job
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{
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struct state;
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static thread_local struct job cur, tot; // current job, total for all jobs
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static thread_local struct state state; // internal state
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uint64_t id {0}; // monotonic
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int64_t tick {0}; // quantum
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uint64_t ticks {0}; // span
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uint64_t cycles {0}; // rdtsc reference
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uint64_t yields {0}; // ircd::ctx relinquish count for large jobs
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uint64_t intrs {0}; // ircd::ctx interrupt count
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uint64_t errors {0}; // exception/error count
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string_view description; // only valid for current job duration
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std::exception_ptr eptr; // apropos exception reference
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};
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struct [[gnu::visibility("hidden")]]
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ircd::magick::init
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{
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init();
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~init() noexcept;
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};
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// inline stubs when magick disabled/unavailable.
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#if !IRCD_USE_MAGICK
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inline
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ircd::magick::init::init()
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{}
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inline
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ircd::magick::init::~init()
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noexcept
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{}
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#endif IRCD_USE_MAGICK
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