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56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
package frame
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import (
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"fmt"
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)
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type Format string
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const (
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// FormatI420 https://wiki.videolan.org/YUV#I420
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FormatI420 Format = "I420"
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// FormatI444 is a YUV format without sub-sampling
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FormatI444 Format = "I444"
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// FormatNV21 https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-nv12.html
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FormatNV21 = "NV21"
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// FormatNV12 https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-nv12.html
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FormatNV12 = "NV12"
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// FormatYUY2 https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-yuyv.html
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// YUY2 is what Windows calls YUYV
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FormatYUY2 = "YUY2"
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// FormatYUYV https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-yuyv.html
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FormatYUYV = "YUYV"
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// FormatUYVY https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-uyvy.html
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FormatUYVY = "UYVY"
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// FormatRGBA https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-rgb.html
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FormatRGBA Format = "RGBA"
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// FormatMJPEG https://wiki.videolan.org/MJPEG
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FormatMJPEG = "MJPEG"
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// FormatZ16 https://www.kernel.org/doc/html/v5.9/userspace-api/media/v4l/pixfmt-z16.html
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FormatZ16 = "Z16"
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)
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var decoderMap = map[Format]decoderFunc{
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FormatI420: decodeI420,
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FormatNV21: decodeNV21,
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FormatNV12: decodeNV12,
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FormatYUY2: decodeYUY2,
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FormatYUYV: decodeYUY2,
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FormatUYVY: decodeUYVY,
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FormatMJPEG: decodeMJPEG,
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FormatZ16: decodeZ16,
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}
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func NewDecoder(f Format) (Decoder, error) {
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decoder, ok := decoderMap[f]
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if !ok {
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return nil, fmt.Errorf("%s is not supported", f)
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}
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return decoder, nil
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}
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