Tulir Asokan
48d91fdf76
It's always gunzipped, so should never send the application/x-tgsticker mime. Also, video/lottie+json was recently registered with IANA, so use that instead of the old image/lottie+json: <https://www.iana.org/assignments/media-types/video/lottie+json>
119 lines
3.6 KiB
Go
119 lines
3.6 KiB
Go
// mautrix-telegram - A Matrix-Telegram puppeting bridge.
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// Copyright (C) 2025 Sumner Evans
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//
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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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//
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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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//
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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 <https://www.gnu.org/licenses/>.
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package media
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strconv"
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"github.com/rs/zerolog"
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"go.mau.fi/util/ffmpeg"
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"go.mau.fi/util/lottie"
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"go.mau.fi/util/random"
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)
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type AnimatedStickerConfig struct {
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Target string `yaml:"target"`
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ConvertFromWebm bool `yaml:"convert_from_webm"`
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Args struct {
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Width int `yaml:"width"`
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Height int `yaml:"height"`
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FPS int `yaml:"fps"`
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} `yaml:"args"`
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}
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type ConvertedSticker struct {
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DataWriter io.Reader
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MIMEType string
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ThumbnailData []byte
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ThumbnailMIMEType string
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Width int
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Height int
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Size int
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}
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func (c AnimatedStickerConfig) convert(ctx context.Context, data []byte) ConvertedSticker {
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input := bytes.NewBuffer(data)
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if c.Target == "disable" {
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return ConvertedSticker{DataWriter: input, MIMEType: "video/lottie+json"}
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}
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log := zerolog.Ctx(ctx).With().Str("animated_sticker_target", c.Target).Logger()
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if !lottie.Supported() {
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log.Warn().Msg("lottie not supported, cannot convert animated stickers")
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return ConvertedSticker{DataWriter: input, MIMEType: "video/lottie+json"}
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} else if (c.Target == "webp" || c.Target == "webm") && !ffmpeg.Supported() {
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log.Warn().Msg("ffmpeg not supported, cannot convert animated stickers")
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return ConvertedSticker{DataWriter: input, MIMEType: "video/lottie+json"}
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}
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dataWriter := new(bytes.Buffer)
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var thumbnailData []byte
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var mimeType, thumbnailMIMEType string
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var err error
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switch c.Target {
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case "png":
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mimeType = "image/png"
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err = lottie.Convert(ctx, input, "", dataWriter, c.Target, c.Args.Width, c.Args.Height, "1")
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case "gif":
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mimeType = "image/gif"
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err = lottie.Convert(ctx, input, "", dataWriter, c.Target, c.Args.Width, c.Args.Height, strconv.Itoa(c.Args.FPS))
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case "webm", "webp":
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tmpFile := filepath.Join(os.TempDir(), fmt.Sprintf("mautrix-telegram-lottieconverter-%s.%s", random.String(10), c.Target))
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defer func() {
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_ = os.Remove(tmpFile)
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}()
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thumbnailMIMEType = "image/png"
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mimeType = "image/" + c.Target
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thumbnailData, err = lottie.FFmpegConvert(ctx, input, tmpFile, c.Args.Width, c.Args.Height, c.Args.FPS)
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if err != nil {
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break
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}
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var convertedData []byte
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convertedData, err = os.ReadFile(tmpFile)
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dataWriter = bytes.NewBuffer(convertedData)
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default:
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err = fmt.Errorf("unsupported target format %s", c.Target)
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}
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if err != nil {
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log.Err(err).
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Str("target", c.Target).
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Msg("failed to convert animated sticker to target format")
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// Fallback to original data
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return ConvertedSticker{DataWriter: input, MIMEType: "video/lottie+json"}
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}
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return ConvertedSticker{
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DataWriter: dataWriter,
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MIMEType: mimeType,
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ThumbnailData: thumbnailData,
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ThumbnailMIMEType: thumbnailMIMEType,
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Width: c.Args.Width,
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Height: c.Args.Height,
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Size: dataWriter.Len(),
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}
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}
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