128 lines
4.6 KiB
Go
128 lines
4.6 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package media
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import (
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"context"
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"io"
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"time"
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)
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// maxFileHeaderBytes represents the maximum amount of bytes we want
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// to examine from the beginning of a file to determine its type.
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//
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// See: https://en.wikipedia.org/wiki/File_format#File_header
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// and https://github.com/h2non/filetype
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const maxFileHeaderBytes = 261
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// mime consts
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const (
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mimeImage = "image"
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mimeJpeg = "jpeg"
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mimeImageJpeg = mimeImage + "/" + mimeJpeg
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mimeGif = "gif"
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mimeImageGif = mimeImage + "/" + mimeGif
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mimePng = "png"
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mimeImagePng = mimeImage + "/" + mimePng
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)
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type processState int32
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const (
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received processState = iota // processing order has been received but not done yet
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complete // processing order has been completed successfully
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errored // processing order has been completed with an error
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)
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// EmojiMaxBytes is the maximum permitted bytes of an emoji upload (50kb)
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// const EmojiMaxBytes = 51200
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type Size string
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const (
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SizeSmall Size = "small" // SizeSmall is the key for small/thumbnail versions of media
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SizeOriginal Size = "original" // SizeOriginal is the key for original/fullsize versions of media and emoji
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SizeStatic Size = "static" // SizeStatic is the key for static (non-animated) versions of emoji
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)
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type Type string
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const (
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TypeAttachment Type = "attachment" // TypeAttachment is the key for media attachments
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TypeHeader Type = "header" // TypeHeader is the key for profile header requests
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TypeAvatar Type = "avatar" // TypeAvatar is the key for profile avatar requests
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TypeEmoji Type = "emoji" // TypeEmoji is the key for emoji type requests
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)
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// AdditionalMediaInfo represents additional information that should be added to an attachment
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// when processing a piece of media.
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type AdditionalMediaInfo struct {
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// Time that this media was created; defaults to time.Now().
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CreatedAt *time.Time
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// ID of the status to which this media is attached; defaults to "".
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StatusID *string
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// URL of the media on a remote instance; defaults to "".
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RemoteURL *string
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// Image description of this media; defaults to "".
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Description *string
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// Blurhash of this media; defaults to "".
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Blurhash *string
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// ID of the scheduled status to which this media is attached; defaults to "".
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ScheduledStatusID *string
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// Mark this media as in-use as an avatar; defaults to false.
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Avatar *bool
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// Mark this media as in-use as a header; defaults to false.
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Header *bool
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// X focus coordinate for this media; defaults to 0.
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FocusX *float32
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// Y focus coordinate for this media; defaults to 0.
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FocusY *float32
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}
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// AdditionalEmojiInfo represents additional information
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// that should be taken into account when processing an emoji.
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type AdditionalEmojiInfo struct {
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// Time that this emoji was created; defaults to time.Now().
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CreatedAt *time.Time
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// Domain the emoji originated from. Blank for this instance's domain. Defaults to "".
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Domain *string
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// URL of this emoji on a remote instance; defaults to "".
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ImageRemoteURL *string
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// URL of the static version of this emoji on a remote instance; defaults to "".
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ImageStaticRemoteURL *string
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// Whether this emoji should be disabled (not shown) on this instance; defaults to false.
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Disabled *bool
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// Whether this emoji should be visible in the instance's emoji picker; defaults to true.
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VisibleInPicker *bool
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// ID of the category this emoji should be placed in; defaults to "".
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CategoryID *string
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}
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// DataFunc represents a function used to retrieve the raw bytes of a piece of media.
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type DataFunc func(ctx context.Context) (reader io.Reader, fileSize int64, err error)
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// PostDataCallbackFunc represents a function executed after the DataFunc has been executed,
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// and the returned reader has been read. It can be used to clean up any remaining resources.
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//
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// This can be set to nil, and will then not be executed.
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type PostDataCallbackFunc func(ctx context.Context) error
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