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39fdde273d
* Add file scanner * Scan scene changes * Split scan files * Generalise scan * Refactor ffprobe * Refactor ffmpeg encoder * Move scene scan code to scene package * Move matchExtension to utils * Refactor gallery scanning * Refactor image scanning * Prevent race conditions on identical hashes * Refactor image thumbnail generation * Perform count concurrently * Allow progress increment before total set * Make progress updates more frequent
36 lines
894 B
Go
36 lines
894 B
Go
package ffmpeg
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import (
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"bytes"
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"errors"
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"fmt"
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)
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func (e *Encoder) ImageThumbnail(image *bytes.Buffer, format *string, maxDimensions int, path string) ([]byte, error) {
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// ffmpeg spends a long sniffing image format when data is piped through stdio, so we pass the format explicitly instead
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ffmpegformat := ""
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if format != nil && *format == "jpeg" {
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ffmpegformat = "mjpeg"
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} else if format != nil && *format == "png" {
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ffmpegformat = "png_pipe"
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} else if format != nil && *format == "webp" {
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ffmpegformat = "webp_pipe"
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} else {
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return nil, errors.New("unsupported image format")
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}
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args := []string{
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"-f", ffmpegformat,
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"-i", "-",
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"-vf", fmt.Sprintf("scale=%v:%v:force_original_aspect_ratio=decrease", maxDimensions, maxDimensions),
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"-c:v", "mjpeg",
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"-q:v", "5",
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"-f", "image2pipe",
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"-",
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}
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data, err := e.run(path, args, image)
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return []byte(data), err
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}
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