README
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go-uvc/pkg/decode
This package provides a simple wrapper around FFmpeg's avcodec to decode video frames.
The goal is for ease of use, not flexibility. If you wish to use your own decoder you don't need to use this package.
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
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var ErrEAGAIN = fmt.Errorf("EAGAIN")
Functions ¶
This section is empty.
Types ¶
type BGR ¶
type BGR struct {
// Pix holds the image's pixels, in R, G, B, A order. The pixel at
// (x, y) starts at Pix[(y-Rect.Min.Y)*Stride + (x-Rect.Min.X)*3].
Pix []uint8
// Stride is the Pix stride (in bytes) between vertically adjacent pixels.
Stride int
// Rect is the image's bounds.
Rect image.Rectangle
}
BGR is an in-memory image whose At method returns color.BGR values.
func (*BGR) ColorModel ¶
type FrameReaderDecoder ¶
type FrameReaderDecoder struct {
// contains filtered or unexported fields
}
func NewFrameReaderDecoder ¶
func NewFrameReaderDecoder(reader *transfers.FrameReader, fd descriptors.FormatDescriptor, fr descriptors.FrameDescriptor) (*FrameReaderDecoder, error)
type LibAVCodecDecoder ¶
type LibAVCodecDecoder struct {
// contains filtered or unexported fields
}
func NewH264Decoder ¶
func NewH264Decoder() (*LibAVCodecDecoder, error)
func NewVP8Decoder ¶
func NewVP8Decoder() (*LibAVCodecDecoder, error)
func (*LibAVCodecDecoder) Close ¶
func (d *LibAVCodecDecoder) Close() error
func (*LibAVCodecDecoder) WriteUSBFrame ¶
func (d *LibAVCodecDecoder) WriteUSBFrame(fr *transfers.Frame) error
type MJPEGDecoder ¶
type MJPEGDecoder struct {
// contains filtered or unexported fields
}
func NewMJPEGDecoder ¶
func NewMJPEGDecoder() (*MJPEGDecoder, error)
func (*MJPEGDecoder) Close ¶
func (d *MJPEGDecoder) Close() error
func (*MJPEGDecoder) WriteUSBFrame ¶
func (d *MJPEGDecoder) WriteUSBFrame(fr *transfers.Frame) error
type RGB ¶
type RGB struct {
// Pix holds the image's pixels, in R, G, B, A order. The pixel at
// (x, y) starts at Pix[(y-Rect.Min.Y)*Stride + (x-Rect.Min.X)*3].
Pix []uint8
// Stride is the Pix stride (in bytes) between vertically adjacent pixels.
Stride int
// Rect is the image's bounds.
Rect image.Rectangle
}
RGB is an in-memory image whose At method returns color.RGB values.
func (*RGB) ColorModel ¶
type UncompressedDecoder ¶
type UncompressedDecoder struct {
// contains filtered or unexported fields
}
func NewUncompressedDecoder ¶
func NewUncompressedDecoder(fourcc [4]byte, width, height int) (*UncompressedDecoder, error)
func (*UncompressedDecoder) Close ¶
func (d *UncompressedDecoder) Close() error
func (*UncompressedDecoder) ReadFrame ¶
func (d *UncompressedDecoder) ReadFrame() (image.Image, error)
func (*UncompressedDecoder) WriteUSBFrame ¶
func (d *UncompressedDecoder) WriteUSBFrame(fr *transfers.Frame) error
type VideoDecoder ¶
type VideoDecoder interface {
ReadFrame() (image.Image, error)
Write(pkt []byte) (int, error)
WriteUSBFrame(fr *transfers.Frame) error
Close() error
}
func NewDescriptorDecoder ¶
func NewDescriptorDecoder(fd descriptors.FormatDescriptor, fr descriptors.FrameDescriptor) (VideoDecoder, error)
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