install go2rtc on bob
This commit is contained in:
@@ -0,0 +1,21 @@
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# Video For Linux Two
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Build on Ubuntu
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```bash
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sudo apt install gcc-x86-64-linux-gnu
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sudo apt install gcc-i686-linux-gnu
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sudo apt install gcc-aarch64-linux-gnu binutils
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sudo apt install gcc-arm-linux-gnueabihf
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sudo apt install gcc-mipsel-linux-gnu
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x86_64-linux-gnu-gcc -w -static videodev2_arch.c -o videodev2_x86_64
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i686-linux-gnu-gcc -w -static videodev2_arch.c -o videodev2_i686
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aarch64-linux-gnu-gcc -w -static videodev2_arch.c -o videodev2_aarch64
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arm-linux-gnueabihf-gcc -w -static videodev2_arch.c -o videodev2_armhf
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mipsel-linux-gnu-gcc -w -static videodev2_arch.c -o videodev2_mipsel -D_TIME_BITS=32
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```
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## Useful links
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- https://github.com/torvalds/linux/blob/master/include/uapi/linux/videodev2.h
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@@ -0,0 +1,252 @@
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//go:build linux
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package device
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import (
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"bytes"
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"errors"
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"fmt"
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"syscall"
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"unsafe"
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)
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type Device struct {
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fd int
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bufs [][]byte
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pixFmt uint32
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}
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func Open(path string) (*Device, error) {
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fd, err := syscall.Open(path, syscall.O_RDWR|syscall.O_CLOEXEC, 0)
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if err != nil {
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return nil, err
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}
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return &Device{fd: fd}, nil
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}
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const buffersCount = 2
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type Capability struct {
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Driver string
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Card string
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BusInfo string
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Version string
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}
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func (d *Device) Capability() (*Capability, error) {
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c := v4l2_capability{}
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if err := ioctl(d.fd, VIDIOC_QUERYCAP, unsafe.Pointer(&c)); err != nil {
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return nil, err
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}
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return &Capability{
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Driver: str(c.driver[:]),
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Card: str(c.card[:]),
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BusInfo: str(c.bus_info[:]),
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Version: fmt.Sprintf("%d.%d.%d", byte(c.version>>16), byte(c.version>>8), byte(c.version)),
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}, nil
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}
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func (d *Device) ListFormats() ([]uint32, error) {
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var items []uint32
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for i := uint32(0); ; i++ {
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fd := v4l2_fmtdesc{
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index: i,
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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}
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if err := ioctl(d.fd, VIDIOC_ENUM_FMT, unsafe.Pointer(&fd)); err != nil {
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if !errors.Is(err, syscall.EINVAL) {
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return nil, err
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}
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break
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}
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items = append(items, fd.pixelformat)
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}
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return items, nil
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}
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func (d *Device) ListSizes(pixFmt uint32) ([][2]uint32, error) {
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var items [][2]uint32
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for i := uint32(0); ; i++ {
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fs := v4l2_frmsizeenum{
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index: i,
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pixel_format: pixFmt,
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}
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if err := ioctl(d.fd, VIDIOC_ENUM_FRAMESIZES, unsafe.Pointer(&fs)); err != nil {
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if !errors.Is(err, syscall.EINVAL) {
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return nil, err
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}
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break
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}
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if fs.typ != V4L2_FRMSIZE_TYPE_DISCRETE {
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continue
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}
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items = append(items, [2]uint32{fs.discrete.width, fs.discrete.height})
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}
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return items, nil
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}
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func (d *Device) ListFrameRates(pixFmt, width, height uint32) ([]uint32, error) {
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var items []uint32
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for i := uint32(0); ; i++ {
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fi := v4l2_frmivalenum{
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index: i,
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pixel_format: pixFmt,
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width: width,
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height: height,
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}
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if err := ioctl(d.fd, VIDIOC_ENUM_FRAMEINTERVALS, unsafe.Pointer(&fi)); err != nil {
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if !errors.Is(err, syscall.EINVAL) {
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return nil, err
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}
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break
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}
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if fi.typ != V4L2_FRMIVAL_TYPE_DISCRETE || fi.discrete.numerator != 1 {
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continue
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}
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items = append(items, fi.discrete.denominator)
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}
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return items, nil
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}
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func (d *Device) SetFormat(width, height, pixFmt uint32) error {
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d.pixFmt = pixFmt
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f := v4l2_format{
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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pix: v4l2_pix_format{
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width: width,
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height: height,
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pixelformat: pixFmt,
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field: V4L2_FIELD_NONE,
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colorspace: V4L2_COLORSPACE_DEFAULT,
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},
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}
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return ioctl(d.fd, VIDIOC_S_FMT, unsafe.Pointer(&f))
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}
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func (d *Device) SetParam(fps uint32) error {
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p := v4l2_streamparm{
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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capture: v4l2_captureparm{
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timeperframe: v4l2_fract{numerator: 1, denominator: fps},
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},
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}
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return ioctl(d.fd, VIDIOC_S_PARM, unsafe.Pointer(&p))
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}
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func (d *Device) StreamOn() (err error) {
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rb := v4l2_requestbuffers{
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count: buffersCount,
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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memory: V4L2_MEMORY_MMAP,
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}
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if err = ioctl(d.fd, VIDIOC_REQBUFS, unsafe.Pointer(&rb)); err != nil {
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return err
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}
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d.bufs = make([][]byte, buffersCount)
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for i := uint32(0); i < buffersCount; i++ {
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qb := v4l2_buffer{
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index: i,
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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memory: V4L2_MEMORY_MMAP,
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}
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if err = ioctl(d.fd, VIDIOC_QUERYBUF, unsafe.Pointer(&qb)); err != nil {
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return err
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}
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if d.bufs[i], err = syscall.Mmap(
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d.fd, int64(qb.offset), int(qb.length), syscall.PROT_READ, syscall.MAP_SHARED,
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); nil != err {
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return err
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}
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if err = ioctl(d.fd, VIDIOC_QBUF, unsafe.Pointer(&qb)); err != nil {
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return err
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}
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}
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typ := uint32(V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return ioctl(d.fd, VIDIOC_STREAMON, unsafe.Pointer(&typ))
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}
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func (d *Device) StreamOff() (err error) {
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typ := uint32(V4L2_BUF_TYPE_VIDEO_CAPTURE)
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if err = ioctl(d.fd, VIDIOC_STREAMOFF, unsafe.Pointer(&typ)); err != nil {
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return err
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}
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for i := range d.bufs {
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_ = syscall.Munmap(d.bufs[i])
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}
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rb := v4l2_requestbuffers{
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count: 0,
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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memory: V4L2_MEMORY_MMAP,
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}
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return ioctl(d.fd, VIDIOC_REQBUFS, unsafe.Pointer(&rb))
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}
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func (d *Device) Capture() ([]byte, error) {
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dec := v4l2_buffer{
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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memory: V4L2_MEMORY_MMAP,
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}
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if err := ioctl(d.fd, VIDIOC_DQBUF, unsafe.Pointer(&dec)); err != nil {
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return nil, err
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}
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src := d.bufs[dec.index][:dec.bytesused]
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dst := make([]byte, dec.bytesused)
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switch d.pixFmt {
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case V4L2_PIX_FMT_YUYV:
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YUYVtoYUV(dst, src)
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case V4L2_PIX_FMT_NV12:
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NV12toYUV(dst, src)
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default:
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copy(dst, d.bufs[dec.index][:dec.bytesused])
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}
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enc := v4l2_buffer{
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typ: V4L2_BUF_TYPE_VIDEO_CAPTURE,
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memory: V4L2_MEMORY_MMAP,
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index: dec.index,
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}
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if err := ioctl(d.fd, VIDIOC_QBUF, unsafe.Pointer(&enc)); err != nil {
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return nil, err
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}
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return dst, nil
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}
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func (d *Device) Close() error {
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return syscall.Close(d.fd)
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}
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func ioctl(fd int, req uint, arg unsafe.Pointer) error {
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_, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
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if err != 0 {
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return err
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}
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return nil
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}
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func str(b []byte) string {
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if i := bytes.IndexByte(b, 0); i >= 0 {
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return string(b[:i])
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}
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return string(b)
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}
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@@ -0,0 +1,62 @@
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package device
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const (
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V4L2_PIX_FMT_YUYV = 'Y' | 'U'<<8 | 'Y'<<16 | 'V'<<24
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V4L2_PIX_FMT_NV12 = 'N' | 'V'<<8 | '1'<<16 | '2'<<24
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V4L2_PIX_FMT_MJPEG = 'M' | 'J'<<8 | 'P'<<16 | 'G'<<24
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V4L2_PIX_FMT_H264 = 'H' | '2'<<8 | '6'<<16 | '4'<<24
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V4L2_PIX_FMT_HEVC = 'H' | 'E'<<8 | 'V'<<16 | 'C'<<24
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)
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type Format struct {
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FourCC uint32
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Name string
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FFmpeg string
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}
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var Formats = []Format{
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{V4L2_PIX_FMT_YUYV, "YUV 4:2:2", "yuyv422"},
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{V4L2_PIX_FMT_NV12, "Y/UV 4:2:0", "nv12"},
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{V4L2_PIX_FMT_MJPEG, "Motion-JPEG", "mjpeg"},
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{V4L2_PIX_FMT_H264, "H.264", "h264"},
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{V4L2_PIX_FMT_HEVC, "HEVC", "hevc"},
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}
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func YUYVtoYUV(dst, src []byte) {
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n := len(src)
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i0 := 0
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iy := 0
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iu := n / 2
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iv := n / 4 * 3
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for i0 < n {
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dst[iy] = src[i0]
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i0++
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iy++
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dst[iu] = src[i0]
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i0++
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iu++
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dst[iy] = src[i0]
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i0++
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iy++
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dst[iv] = src[i0]
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i0++
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iv++
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}
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}
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func NV12toYUV(dst, src []byte) {
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n := len(src)
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k := n / 6
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i0 := k * 4
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iu := i0
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iv := i0 + k
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copy(dst, src[:i0]) // copy Y
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for i0 < n {
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dst[iu] = src[i0]
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i0++
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iu++
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dst[iv] = src[i0]
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i0++
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iv++
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}
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}
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@@ -0,0 +1,149 @@
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package device
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const (
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VIDIOC_QUERYCAP = 0x80685600
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VIDIOC_ENUM_FMT = 0xc0405602
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VIDIOC_G_FMT = 0xc0cc5604
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VIDIOC_S_FMT = 0xc0cc5605
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VIDIOC_REQBUFS = 0xc0145608
|
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VIDIOC_QUERYBUF = 0xc0445609
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|
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VIDIOC_QBUF = 0xc044560f
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VIDIOC_DQBUF = 0xc0445611
|
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VIDIOC_STREAMON = 0x40045612
|
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VIDIOC_STREAMOFF = 0x40045613
|
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VIDIOC_G_PARM = 0xc0cc5615
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VIDIOC_S_PARM = 0xc0cc5616
|
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|
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VIDIOC_ENUM_FRAMESIZES = 0xc02c564a
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VIDIOC_ENUM_FRAMEINTERVALS = 0xc034564b
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)
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|
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const (
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V4L2_BUF_TYPE_VIDEO_CAPTURE = 1
|
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V4L2_COLORSPACE_DEFAULT = 0
|
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V4L2_FIELD_NONE = 1
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V4L2_FRMIVAL_TYPE_DISCRETE = 1
|
||||
V4L2_FRMSIZE_TYPE_DISCRETE = 1
|
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V4L2_MEMORY_MMAP = 1
|
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)
|
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|
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type v4l2_capability struct { // size 104
|
||||
driver [16]byte // offset 0, size 16
|
||||
card [32]byte // offset 16, size 32
|
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bus_info [32]byte // offset 48, size 32
|
||||
version uint32 // offset 80, size 4
|
||||
capabilities uint32 // offset 84, size 4
|
||||
device_caps uint32 // offset 88, size 4
|
||||
reserved [3]uint32 // offset 92, size 12
|
||||
}
|
||||
|
||||
type v4l2_format struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
_ [0]byte // align
|
||||
pix v4l2_pix_format // offset 4, size 48
|
||||
_ [152]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_pix_format struct { // size 48
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
pixelformat uint32 // offset 8, size 4
|
||||
field uint32 // offset 12, size 4
|
||||
bytesperline uint32 // offset 16, size 4
|
||||
sizeimage uint32 // offset 20, size 4
|
||||
colorspace uint32 // offset 24, size 4
|
||||
priv uint32 // offset 28, size 4
|
||||
flags uint32 // offset 32, size 4
|
||||
ycbcr_enc uint32 // offset 36, size 4
|
||||
quantization uint32 // offset 40, size 4
|
||||
xfer_func uint32 // offset 44, size 4
|
||||
}
|
||||
|
||||
type v4l2_streamparm struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
capture v4l2_captureparm // offset 4, size 40
|
||||
_ [160]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_captureparm struct { // size 40
|
||||
capability uint32 // offset 0, size 4
|
||||
capturemode uint32 // offset 4, size 4
|
||||
timeperframe v4l2_fract // offset 8, size 8
|
||||
extendedmode uint32 // offset 16, size 4
|
||||
readbuffers uint32 // offset 20, size 4
|
||||
reserved [4]uint32 // offset 24, size 16
|
||||
}
|
||||
|
||||
type v4l2_fract struct { // size 8
|
||||
numerator uint32 // offset 0, size 4
|
||||
denominator uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_requestbuffers struct { // size 20
|
||||
count uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
memory uint32 // offset 8, size 4
|
||||
capabilities uint32 // offset 12, size 4
|
||||
flags uint8 // offset 16, size 1
|
||||
reserved [3]uint8 // offset 17, size 3
|
||||
}
|
||||
|
||||
type v4l2_buffer struct { // size 68
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
bytesused uint32 // offset 8, size 4
|
||||
flags uint32 // offset 12, size 4
|
||||
field uint32 // offset 16, size 4
|
||||
_ [8]byte // align
|
||||
timecode v4l2_timecode // offset 28, size 16
|
||||
sequence uint32 // offset 44, size 4
|
||||
memory uint32 // offset 48, size 4
|
||||
offset uint32 // offset 52, size 4
|
||||
_ [0]byte // align
|
||||
length uint32 // offset 56, size 4
|
||||
_ [8]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_timecode struct { // size 16
|
||||
typ uint32 // offset 0, size 4
|
||||
flags uint32 // offset 4, size 4
|
||||
frames uint8 // offset 8, size 1
|
||||
seconds uint8 // offset 9, size 1
|
||||
minutes uint8 // offset 10, size 1
|
||||
hours uint8 // offset 11, size 1
|
||||
userbits [4]uint8 // offset 12, size 4
|
||||
}
|
||||
|
||||
type v4l2_fmtdesc struct { // size 64
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
flags uint32 // offset 8, size 4
|
||||
description [32]byte // offset 12, size 32
|
||||
pixelformat uint32 // offset 44, size 4
|
||||
mbus_code uint32 // offset 48, size 4
|
||||
reserved [3]uint32 // offset 52, size 12
|
||||
}
|
||||
|
||||
type v4l2_frmsizeenum struct { // size 44
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
typ uint32 // offset 8, size 4
|
||||
discrete v4l2_frmsize_discrete // offset 12, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_frmsize_discrete struct { // size 8
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_frmivalenum struct { // size 52
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
width uint32 // offset 8, size 4
|
||||
height uint32 // offset 12, size 4
|
||||
typ uint32 // offset 16, size 4
|
||||
discrete v4l2_fract // offset 20, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
@@ -0,0 +1,164 @@
|
||||
//go:build ignore
|
||||
#include <stdio.h>
|
||||
#include <stddef.h>
|
||||
#include <linux/videodev2.h>
|
||||
|
||||
#define printconst1(con) printf("\t%s = 0x%08lx\n", #con, con)
|
||||
#define printconst2(con) printf("\t%s = %d\n", #con, con)
|
||||
#define printstruct(str) printf("type %s struct { // size %lu\n", #str, sizeof(struct str))
|
||||
#define printmember(str, mem, typ) printf("\t%s %s // offset %lu, size %lu\n", #mem == "type" ? "typ" : #mem, typ, offsetof(struct str, mem), sizeof((struct str){0}.mem))
|
||||
#define printunimem(str, uni, mem, typ) printf("\t%s %s // offset %lu, size %lu\n", #mem, typ, offsetof(struct str, uni.mem), sizeof((struct str){0}.uni.mem))
|
||||
#define printalign1(str, mem2, mem1) printf("\t_ [%lu]byte // align\n", offsetof(struct str, mem2) - offsetof(struct str, mem1) - sizeof((struct str){0}.mem1))
|
||||
#define printfiller(str, mem) printf("\t_ [%lu]byte // filler\n", sizeof(struct str) - offsetof(struct str, mem) - sizeof((struct str){0}.mem))
|
||||
|
||||
int main() {
|
||||
printf("const (\n");
|
||||
printconst1(VIDIOC_QUERYCAP);
|
||||
printconst1(VIDIOC_ENUM_FMT);
|
||||
printconst1(VIDIOC_G_FMT);
|
||||
printconst1(VIDIOC_S_FMT);
|
||||
printconst1(VIDIOC_REQBUFS);
|
||||
printconst1(VIDIOC_QUERYBUF);
|
||||
printf("\n");
|
||||
printconst1(VIDIOC_QBUF);
|
||||
printconst1(VIDIOC_DQBUF);
|
||||
printconst1(VIDIOC_STREAMON);
|
||||
printconst1(VIDIOC_STREAMOFF);
|
||||
printconst1(VIDIOC_G_PARM);
|
||||
printconst1(VIDIOC_S_PARM);
|
||||
printf("\n");
|
||||
printconst1(VIDIOC_ENUM_FRAMESIZES);
|
||||
printconst1(VIDIOC_ENUM_FRAMEINTERVALS);
|
||||
printf(")\n\n");
|
||||
|
||||
printf("const (\n");
|
||||
printconst2(V4L2_BUF_TYPE_VIDEO_CAPTURE);
|
||||
printconst2(V4L2_COLORSPACE_DEFAULT);
|
||||
printconst2(V4L2_FIELD_NONE);
|
||||
printconst2(V4L2_FRMIVAL_TYPE_DISCRETE);
|
||||
printconst2(V4L2_FRMSIZE_TYPE_DISCRETE);
|
||||
printconst2(V4L2_MEMORY_MMAP);
|
||||
printf(")\n\n");
|
||||
|
||||
printstruct(v4l2_capability);
|
||||
printmember(v4l2_capability, driver, "[16]byte");
|
||||
printmember(v4l2_capability, card, "[32]byte");
|
||||
printmember(v4l2_capability, bus_info, "[32]byte");
|
||||
printmember(v4l2_capability, version, "uint32");
|
||||
printmember(v4l2_capability, capabilities, "uint32");
|
||||
printmember(v4l2_capability, device_caps, "uint32");
|
||||
printmember(v4l2_capability, reserved, "[3]uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_format);
|
||||
printmember(v4l2_format, type, "uint32");
|
||||
printalign1(v4l2_format, fmt, type);
|
||||
printunimem(v4l2_format, fmt, pix, "v4l2_pix_format");
|
||||
printfiller(v4l2_format, fmt.pix);
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_pix_format);
|
||||
printmember(v4l2_pix_format, width, "uint32");
|
||||
printmember(v4l2_pix_format, height, "uint32");
|
||||
printmember(v4l2_pix_format, pixelformat, "uint32");
|
||||
printmember(v4l2_pix_format, field, "uint32");
|
||||
printmember(v4l2_pix_format, bytesperline, "uint32");
|
||||
printmember(v4l2_pix_format, sizeimage, "uint32");
|
||||
printmember(v4l2_pix_format, colorspace, "uint32");
|
||||
printmember(v4l2_pix_format, priv, "uint32");
|
||||
printmember(v4l2_pix_format, flags, "uint32");
|
||||
printmember(v4l2_pix_format, ycbcr_enc, "uint32");
|
||||
printmember(v4l2_pix_format, quantization, "uint32");
|
||||
printmember(v4l2_pix_format, xfer_func, "uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_streamparm);
|
||||
printmember(v4l2_streamparm, type, "uint32");
|
||||
printunimem(v4l2_streamparm, parm, capture, "v4l2_captureparm");
|
||||
printfiller(v4l2_streamparm, parm.capture);
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_captureparm);
|
||||
printmember(v4l2_captureparm, capability, "uint32");
|
||||
printmember(v4l2_captureparm, capturemode, "uint32");
|
||||
printmember(v4l2_captureparm, timeperframe, "v4l2_fract");
|
||||
printmember(v4l2_captureparm, extendedmode, "uint32");
|
||||
printmember(v4l2_captureparm, readbuffers, "uint32");
|
||||
printmember(v4l2_captureparm, reserved, "[4]uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_fract);
|
||||
printmember(v4l2_fract, numerator, "uint32");
|
||||
printmember(v4l2_fract, denominator, "uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_requestbuffers);
|
||||
printmember(v4l2_requestbuffers, count, "uint32");
|
||||
printmember(v4l2_requestbuffers, type, "uint32");
|
||||
printmember(v4l2_requestbuffers, memory, "uint32");
|
||||
printmember(v4l2_requestbuffers, capabilities, "uint32");
|
||||
printmember(v4l2_requestbuffers, flags, "uint8");
|
||||
printmember(v4l2_requestbuffers, reserved, "[3]uint8");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_buffer);
|
||||
printmember(v4l2_buffer, index, "uint32");
|
||||
printmember(v4l2_buffer, type, "uint32");
|
||||
printmember(v4l2_buffer, bytesused, "uint32");
|
||||
printmember(v4l2_buffer, flags, "uint32");
|
||||
printmember(v4l2_buffer, field, "uint32");
|
||||
printalign1(v4l2_buffer, timecode, field);
|
||||
printmember(v4l2_buffer, timecode, "v4l2_timecode");
|
||||
printmember(v4l2_buffer, sequence, "uint32");
|
||||
printmember(v4l2_buffer, memory, "uint32");
|
||||
printunimem(v4l2_buffer, m, offset, "uint32");
|
||||
printalign1(v4l2_buffer, length, m.offset);
|
||||
printmember(v4l2_buffer, length, "uint32");
|
||||
printfiller(v4l2_buffer, length);
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_timecode);
|
||||
printmember(v4l2_timecode, type, "uint32");
|
||||
printmember(v4l2_timecode, flags, "uint32");
|
||||
printmember(v4l2_timecode, frames, "uint8");
|
||||
printmember(v4l2_timecode, seconds, "uint8");
|
||||
printmember(v4l2_timecode, minutes, "uint8");
|
||||
printmember(v4l2_timecode, hours, "uint8");
|
||||
printmember(v4l2_timecode, userbits, "[4]uint8");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_fmtdesc);
|
||||
printmember(v4l2_fmtdesc, index, "uint32");
|
||||
printmember(v4l2_fmtdesc, type, "uint32");
|
||||
printmember(v4l2_fmtdesc, flags, "uint32");
|
||||
printmember(v4l2_fmtdesc, description, "[32]byte");
|
||||
printmember(v4l2_fmtdesc, pixelformat, "uint32");
|
||||
printmember(v4l2_fmtdesc, mbus_code, "uint32");
|
||||
printmember(v4l2_fmtdesc, reserved, "[3]uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_frmsizeenum);
|
||||
printmember(v4l2_frmsizeenum, index, "uint32");
|
||||
printmember(v4l2_frmsizeenum, pixel_format, "uint32");
|
||||
printmember(v4l2_frmsizeenum, type, "uint32");
|
||||
printmember(v4l2_frmsizeenum, discrete, "v4l2_frmsize_discrete");
|
||||
printfiller(v4l2_frmsizeenum, discrete);
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_frmsize_discrete);
|
||||
printmember(v4l2_frmsize_discrete, width, "uint32");
|
||||
printmember(v4l2_frmsize_discrete, height, "uint32");
|
||||
printf("}\n\n");
|
||||
|
||||
printstruct(v4l2_frmivalenum);
|
||||
printmember(v4l2_frmivalenum, index, "uint32");
|
||||
printmember(v4l2_frmivalenum, pixel_format, "uint32");
|
||||
printmember(v4l2_frmivalenum, width, "uint32");
|
||||
printmember(v4l2_frmivalenum, height, "uint32");
|
||||
printmember(v4l2_frmivalenum, type, "uint32");
|
||||
printmember(v4l2_frmivalenum, discrete, "v4l2_fract");
|
||||
printfiller(v4l2_frmivalenum, discrete);
|
||||
printf("}\n\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,149 @@
|
||||
package device
|
||||
|
||||
const (
|
||||
VIDIOC_QUERYCAP = 0x80685600
|
||||
VIDIOC_ENUM_FMT = 0xc0405602
|
||||
VIDIOC_G_FMT = 0xc0cc5604
|
||||
VIDIOC_S_FMT = 0xc0cc5605
|
||||
VIDIOC_REQBUFS = 0xc0145608
|
||||
VIDIOC_QUERYBUF = 0xc0505609
|
||||
|
||||
VIDIOC_QBUF = 0xc050560f
|
||||
VIDIOC_DQBUF = 0xc0505611
|
||||
VIDIOC_STREAMON = 0x40045612
|
||||
VIDIOC_STREAMOFF = 0x40045613
|
||||
VIDIOC_G_PARM = 0xc0cc5615
|
||||
VIDIOC_S_PARM = 0xc0cc5616
|
||||
|
||||
VIDIOC_ENUM_FRAMESIZES = 0xc02c564a
|
||||
VIDIOC_ENUM_FRAMEINTERVALS = 0xc034564b
|
||||
)
|
||||
|
||||
const (
|
||||
V4L2_BUF_TYPE_VIDEO_CAPTURE = 1
|
||||
V4L2_COLORSPACE_DEFAULT = 0
|
||||
V4L2_FIELD_NONE = 1
|
||||
V4L2_FRMIVAL_TYPE_DISCRETE = 1
|
||||
V4L2_FRMSIZE_TYPE_DISCRETE = 1
|
||||
V4L2_MEMORY_MMAP = 1
|
||||
)
|
||||
|
||||
type v4l2_capability struct { // size 104
|
||||
driver [16]byte // offset 0, size 16
|
||||
card [32]byte // offset 16, size 32
|
||||
bus_info [32]byte // offset 48, size 32
|
||||
version uint32 // offset 80, size 4
|
||||
capabilities uint32 // offset 84, size 4
|
||||
device_caps uint32 // offset 88, size 4
|
||||
reserved [3]uint32 // offset 92, size 12
|
||||
}
|
||||
|
||||
type v4l2_format struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
_ [0]byte // align
|
||||
pix v4l2_pix_format // offset 4, size 48
|
||||
_ [152]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_pix_format struct { // size 48
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
pixelformat uint32 // offset 8, size 4
|
||||
field uint32 // offset 12, size 4
|
||||
bytesperline uint32 // offset 16, size 4
|
||||
sizeimage uint32 // offset 20, size 4
|
||||
colorspace uint32 // offset 24, size 4
|
||||
priv uint32 // offset 28, size 4
|
||||
flags uint32 // offset 32, size 4
|
||||
ycbcr_enc uint32 // offset 36, size 4
|
||||
quantization uint32 // offset 40, size 4
|
||||
xfer_func uint32 // offset 44, size 4
|
||||
}
|
||||
|
||||
type v4l2_streamparm struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
capture v4l2_captureparm // offset 4, size 40
|
||||
_ [160]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_captureparm struct { // size 40
|
||||
capability uint32 // offset 0, size 4
|
||||
capturemode uint32 // offset 4, size 4
|
||||
timeperframe v4l2_fract // offset 8, size 8
|
||||
extendedmode uint32 // offset 16, size 4
|
||||
readbuffers uint32 // offset 20, size 4
|
||||
reserved [4]uint32 // offset 24, size 16
|
||||
}
|
||||
|
||||
type v4l2_fract struct { // size 8
|
||||
numerator uint32 // offset 0, size 4
|
||||
denominator uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_requestbuffers struct { // size 20
|
||||
count uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
memory uint32 // offset 8, size 4
|
||||
capabilities uint32 // offset 12, size 4
|
||||
flags uint8 // offset 16, size 1
|
||||
reserved [3]uint8 // offset 17, size 3
|
||||
}
|
||||
|
||||
type v4l2_buffer struct { // size 80
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
bytesused uint32 // offset 8, size 4
|
||||
flags uint32 // offset 12, size 4
|
||||
field uint32 // offset 16, size 4
|
||||
_ [20]byte // align
|
||||
timecode v4l2_timecode // offset 40, size 16
|
||||
sequence uint32 // offset 56, size 4
|
||||
memory uint32 // offset 60, size 4
|
||||
offset uint32 // offset 64, size 4
|
||||
_ [0]byte // align
|
||||
length uint32 // offset 68, size 4
|
||||
_ [8]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_timecode struct { // size 16
|
||||
typ uint32 // offset 0, size 4
|
||||
flags uint32 // offset 4, size 4
|
||||
frames uint8 // offset 8, size 1
|
||||
seconds uint8 // offset 9, size 1
|
||||
minutes uint8 // offset 10, size 1
|
||||
hours uint8 // offset 11, size 1
|
||||
userbits [4]uint8 // offset 12, size 4
|
||||
}
|
||||
|
||||
type v4l2_fmtdesc struct { // size 64
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
flags uint32 // offset 8, size 4
|
||||
description [32]byte // offset 12, size 32
|
||||
pixelformat uint32 // offset 44, size 4
|
||||
mbus_code uint32 // offset 48, size 4
|
||||
reserved [3]uint32 // offset 52, size 12
|
||||
}
|
||||
|
||||
type v4l2_frmsizeenum struct { // size 44
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
typ uint32 // offset 8, size 4
|
||||
discrete v4l2_frmsize_discrete // offset 12, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_frmsize_discrete struct { // size 8
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_frmivalenum struct { // size 52
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
width uint32 // offset 8, size 4
|
||||
height uint32 // offset 12, size 4
|
||||
typ uint32 // offset 16, size 4
|
||||
discrete v4l2_fract // offset 20, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
@@ -0,0 +1,149 @@
|
||||
package device
|
||||
|
||||
const (
|
||||
VIDIOC_QUERYCAP = 0x40685600
|
||||
VIDIOC_ENUM_FMT = 0xc0405602
|
||||
VIDIOC_G_FMT = 0xc0cc5604
|
||||
VIDIOC_S_FMT = 0xc0cc5605
|
||||
VIDIOC_REQBUFS = 0xc0145608
|
||||
VIDIOC_QUERYBUF = 0xc0445609
|
||||
|
||||
VIDIOC_QBUF = 0xc044560f
|
||||
VIDIOC_DQBUF = 0xc0445611
|
||||
VIDIOC_STREAMON = 0x80045612
|
||||
VIDIOC_STREAMOFF = 0x80045613
|
||||
VIDIOC_G_PARM = 0xc0cc5615
|
||||
VIDIOC_S_PARM = 0xc0cc5616
|
||||
|
||||
VIDIOC_ENUM_FRAMESIZES = 0xc02c564a
|
||||
VIDIOC_ENUM_FRAMEINTERVALS = 0xc034564b
|
||||
)
|
||||
|
||||
const (
|
||||
V4L2_BUF_TYPE_VIDEO_CAPTURE = 1
|
||||
V4L2_COLORSPACE_DEFAULT = 0
|
||||
V4L2_FIELD_NONE = 1
|
||||
V4L2_FRMIVAL_TYPE_DISCRETE = 1
|
||||
V4L2_FRMSIZE_TYPE_DISCRETE = 1
|
||||
V4L2_MEMORY_MMAP = 1
|
||||
)
|
||||
|
||||
type v4l2_capability struct { // size 104
|
||||
driver [16]byte // offset 0, size 16
|
||||
card [32]byte // offset 16, size 32
|
||||
bus_info [32]byte // offset 48, size 32
|
||||
version uint32 // offset 80, size 4
|
||||
capabilities uint32 // offset 84, size 4
|
||||
device_caps uint32 // offset 88, size 4
|
||||
reserved [3]uint32 // offset 92, size 12
|
||||
}
|
||||
|
||||
type v4l2_format struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
_ [0]byte // align
|
||||
pix v4l2_pix_format // offset 4, size 48
|
||||
_ [152]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_pix_format struct { // size 48
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
pixelformat uint32 // offset 8, size 4
|
||||
field uint32 // offset 12, size 4
|
||||
bytesperline uint32 // offset 16, size 4
|
||||
sizeimage uint32 // offset 20, size 4
|
||||
colorspace uint32 // offset 24, size 4
|
||||
priv uint32 // offset 28, size 4
|
||||
flags uint32 // offset 32, size 4
|
||||
ycbcr_enc uint32 // offset 36, size 4
|
||||
quantization uint32 // offset 40, size 4
|
||||
xfer_func uint32 // offset 44, size 4
|
||||
}
|
||||
|
||||
type v4l2_streamparm struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
capture v4l2_captureparm // offset 4, size 40
|
||||
_ [160]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_captureparm struct { // size 40
|
||||
capability uint32 // offset 0, size 4
|
||||
capturemode uint32 // offset 4, size 4
|
||||
timeperframe v4l2_fract // offset 8, size 8
|
||||
extendedmode uint32 // offset 16, size 4
|
||||
readbuffers uint32 // offset 20, size 4
|
||||
reserved [4]uint32 // offset 24, size 16
|
||||
}
|
||||
|
||||
type v4l2_fract struct { // size 8
|
||||
numerator uint32 // offset 0, size 4
|
||||
denominator uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_requestbuffers struct { // size 20
|
||||
count uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
memory uint32 // offset 8, size 4
|
||||
capabilities uint32 // offset 12, size 4
|
||||
flags uint8 // offset 16, size 1
|
||||
reserved [3]uint8 // offset 17, size 3
|
||||
}
|
||||
|
||||
type v4l2_buffer struct { // size 68
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
bytesused uint32 // offset 8, size 4
|
||||
flags uint32 // offset 12, size 4
|
||||
field uint32 // offset 16, size 4
|
||||
_ [8]byte // align
|
||||
timecode v4l2_timecode // offset 28, size 16
|
||||
sequence uint32 // offset 44, size 4
|
||||
memory uint32 // offset 48, size 4
|
||||
offset uint32 // offset 52, size 4
|
||||
_ [0]byte // align
|
||||
length uint32 // offset 56, size 4
|
||||
_ [8]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_timecode struct { // size 16
|
||||
typ uint32 // offset 0, size 4
|
||||
flags uint32 // offset 4, size 4
|
||||
frames uint8 // offset 8, size 1
|
||||
seconds uint8 // offset 9, size 1
|
||||
minutes uint8 // offset 10, size 1
|
||||
hours uint8 // offset 11, size 1
|
||||
userbits [4]uint8 // offset 12, size 4
|
||||
}
|
||||
|
||||
type v4l2_fmtdesc struct { // size 64
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
flags uint32 // offset 8, size 4
|
||||
description [32]byte // offset 12, size 32
|
||||
pixelformat uint32 // offset 44, size 4
|
||||
mbus_code uint32 // offset 48, size 4
|
||||
reserved [3]uint32 // offset 52, size 12
|
||||
}
|
||||
|
||||
type v4l2_frmsizeenum struct { // size 44
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
typ uint32 // offset 8, size 4
|
||||
discrete v4l2_frmsize_discrete // offset 12, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_frmsize_discrete struct { // size 8
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_frmivalenum struct { // size 52
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
width uint32 // offset 8, size 4
|
||||
height uint32 // offset 12, size 4
|
||||
typ uint32 // offset 16, size 4
|
||||
discrete v4l2_fract // offset 20, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
@@ -0,0 +1,151 @@
|
||||
//go:build amd64 || arm64
|
||||
|
||||
package device
|
||||
|
||||
const (
|
||||
VIDIOC_QUERYCAP = 0x80685600
|
||||
VIDIOC_ENUM_FMT = 0xc0405602
|
||||
VIDIOC_G_FMT = 0xc0d05604
|
||||
VIDIOC_S_FMT = 0xc0d05605
|
||||
VIDIOC_REQBUFS = 0xc0145608
|
||||
VIDIOC_QUERYBUF = 0xc0585609
|
||||
|
||||
VIDIOC_QBUF = 0xc058560f
|
||||
VIDIOC_DQBUF = 0xc0585611
|
||||
VIDIOC_STREAMON = 0x40045612
|
||||
VIDIOC_STREAMOFF = 0x40045613
|
||||
VIDIOC_G_PARM = 0xc0cc5615
|
||||
VIDIOC_S_PARM = 0xc0cc5616
|
||||
|
||||
VIDIOC_ENUM_FRAMESIZES = 0xc02c564a
|
||||
VIDIOC_ENUM_FRAMEINTERVALS = 0xc034564b
|
||||
)
|
||||
|
||||
const (
|
||||
V4L2_BUF_TYPE_VIDEO_CAPTURE = 1
|
||||
V4L2_COLORSPACE_DEFAULT = 0
|
||||
V4L2_FIELD_NONE = 1
|
||||
V4L2_FRMIVAL_TYPE_DISCRETE = 1
|
||||
V4L2_FRMSIZE_TYPE_DISCRETE = 1
|
||||
V4L2_MEMORY_MMAP = 1
|
||||
)
|
||||
|
||||
type v4l2_capability struct { // size 104
|
||||
driver [16]byte // offset 0, size 16
|
||||
card [32]byte // offset 16, size 32
|
||||
bus_info [32]byte // offset 48, size 32
|
||||
version uint32 // offset 80, size 4
|
||||
capabilities uint32 // offset 84, size 4
|
||||
device_caps uint32 // offset 88, size 4
|
||||
reserved [3]uint32 // offset 92, size 12
|
||||
}
|
||||
|
||||
type v4l2_format struct { // size 208
|
||||
typ uint32 // offset 0, size 4
|
||||
_ [4]byte // align
|
||||
pix v4l2_pix_format // offset 8, size 48
|
||||
_ [152]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_pix_format struct { // size 48
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
pixelformat uint32 // offset 8, size 4
|
||||
field uint32 // offset 12, size 4
|
||||
bytesperline uint32 // offset 16, size 4
|
||||
sizeimage uint32 // offset 20, size 4
|
||||
colorspace uint32 // offset 24, size 4
|
||||
priv uint32 // offset 28, size 4
|
||||
flags uint32 // offset 32, size 4
|
||||
ycbcr_enc uint32 // offset 36, size 4
|
||||
quantization uint32 // offset 40, size 4
|
||||
xfer_func uint32 // offset 44, size 4
|
||||
}
|
||||
|
||||
type v4l2_streamparm struct { // size 204
|
||||
typ uint32 // offset 0, size 4
|
||||
capture v4l2_captureparm // offset 4, size 40
|
||||
_ [160]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_captureparm struct { // size 40
|
||||
capability uint32 // offset 0, size 4
|
||||
capturemode uint32 // offset 4, size 4
|
||||
timeperframe v4l2_fract // offset 8, size 8
|
||||
extendedmode uint32 // offset 16, size 4
|
||||
readbuffers uint32 // offset 20, size 4
|
||||
reserved [4]uint32 // offset 24, size 16
|
||||
}
|
||||
|
||||
type v4l2_fract struct { // size 8
|
||||
numerator uint32 // offset 0, size 4
|
||||
denominator uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_requestbuffers struct { // size 20
|
||||
count uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
memory uint32 // offset 8, size 4
|
||||
capabilities uint32 // offset 12, size 4
|
||||
flags uint8 // offset 16, size 1
|
||||
reserved [3]uint8 // offset 17, size 3
|
||||
}
|
||||
|
||||
type v4l2_buffer struct { // size 88
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
bytesused uint32 // offset 8, size 4
|
||||
flags uint32 // offset 12, size 4
|
||||
field uint32 // offset 16, size 4
|
||||
_ [20]byte // align
|
||||
timecode v4l2_timecode // offset 40, size 16
|
||||
sequence uint32 // offset 56, size 4
|
||||
memory uint32 // offset 60, size 4
|
||||
offset uint32 // offset 64, size 4
|
||||
_ [4]byte // align
|
||||
length uint32 // offset 72, size 4
|
||||
_ [12]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_timecode struct { // size 16
|
||||
typ uint32 // offset 0, size 4
|
||||
flags uint32 // offset 4, size 4
|
||||
frames uint8 // offset 8, size 1
|
||||
seconds uint8 // offset 9, size 1
|
||||
minutes uint8 // offset 10, size 1
|
||||
hours uint8 // offset 11, size 1
|
||||
userbits [4]uint8 // offset 12, size 4
|
||||
}
|
||||
|
||||
type v4l2_fmtdesc struct { // size 64
|
||||
index uint32 // offset 0, size 4
|
||||
typ uint32 // offset 4, size 4
|
||||
flags uint32 // offset 8, size 4
|
||||
description [32]byte // offset 12, size 32
|
||||
pixelformat uint32 // offset 44, size 4
|
||||
mbus_code uint32 // offset 48, size 4
|
||||
reserved [3]uint32 // offset 52, size 12
|
||||
}
|
||||
|
||||
type v4l2_frmsizeenum struct { // size 44
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
typ uint32 // offset 8, size 4
|
||||
discrete v4l2_frmsize_discrete // offset 12, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
|
||||
type v4l2_frmsize_discrete struct { // size 8
|
||||
width uint32 // offset 0, size 4
|
||||
height uint32 // offset 4, size 4
|
||||
}
|
||||
|
||||
type v4l2_frmivalenum struct { // size 52
|
||||
index uint32 // offset 0, size 4
|
||||
pixel_format uint32 // offset 4, size 4
|
||||
width uint32 // offset 8, size 4
|
||||
height uint32 // offset 12, size 4
|
||||
typ uint32 // offset 16, size 4
|
||||
discrete v4l2_fract // offset 20, size 8
|
||||
_ [24]byte // filler
|
||||
}
|
||||
@@ -0,0 +1,142 @@
|
||||
//go:build linux
|
||||
|
||||
package v4l2
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"net/url"
|
||||
"strings"
|
||||
|
||||
"github.com/AlexxIT/go2rtc/pkg/core"
|
||||
"github.com/AlexxIT/go2rtc/pkg/h264/annexb"
|
||||
"github.com/AlexxIT/go2rtc/pkg/v4l2/device"
|
||||
"github.com/pion/rtp"
|
||||
)
|
||||
|
||||
type Producer struct {
|
||||
core.Connection
|
||||
dev *device.Device
|
||||
}
|
||||
|
||||
func Open(rawURL string) (*Producer, error) {
|
||||
// Example (ffmpeg source compatible):
|
||||
// v4l2:device?video=/dev/video0&input_format=mjpeg&video_size=1280x720
|
||||
u, err := url.Parse(rawURL)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
query := u.Query()
|
||||
|
||||
dev, err := device.Open(query.Get("video"))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
codec := &core.Codec{
|
||||
ClockRate: 90000,
|
||||
PayloadType: core.PayloadTypeRAW,
|
||||
}
|
||||
|
||||
var width, height, pixFmt uint32
|
||||
|
||||
if wh := strings.Split(query.Get("video_size"), "x"); len(wh) == 2 {
|
||||
codec.FmtpLine = "width=" + wh[0] + ";height=" + wh[1]
|
||||
width = uint32(core.Atoi(wh[0]))
|
||||
height = uint32(core.Atoi(wh[1]))
|
||||
}
|
||||
|
||||
switch query.Get("input_format") {
|
||||
case "yuyv422":
|
||||
if codec.FmtpLine == "" {
|
||||
return nil, errors.New("v4l2: invalid video_size")
|
||||
}
|
||||
codec.Name = core.CodecRAW
|
||||
codec.FmtpLine += ";colorspace=422"
|
||||
pixFmt = device.V4L2_PIX_FMT_YUYV
|
||||
case "nv12":
|
||||
if codec.FmtpLine == "" {
|
||||
return nil, errors.New("v4l2: invalid video_size")
|
||||
}
|
||||
codec.Name = core.CodecRAW
|
||||
codec.FmtpLine += ";colorspace=420mpeg2" // maybe 420jpeg
|
||||
pixFmt = device.V4L2_PIX_FMT_NV12
|
||||
case "mjpeg":
|
||||
codec.Name = core.CodecJPEG
|
||||
pixFmt = device.V4L2_PIX_FMT_MJPEG
|
||||
case "h264":
|
||||
codec.Name = core.CodecH264
|
||||
pixFmt = device.V4L2_PIX_FMT_H264
|
||||
case "hevc":
|
||||
codec.Name = core.CodecH265
|
||||
pixFmt = device.V4L2_PIX_FMT_HEVC
|
||||
default:
|
||||
return nil, errors.New("v4l2: invalid input_format")
|
||||
}
|
||||
|
||||
if err = dev.SetFormat(width, height, pixFmt); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if fps := core.Atoi(query.Get("framerate")); fps > 0 {
|
||||
if err = dev.SetParam(uint32(fps)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
medias := []*core.Media{
|
||||
{
|
||||
Kind: core.KindVideo,
|
||||
Direction: core.DirectionRecvonly,
|
||||
Codecs: []*core.Codec{codec},
|
||||
},
|
||||
}
|
||||
return &Producer{
|
||||
Connection: core.Connection{
|
||||
ID: core.NewID(),
|
||||
FormatName: "v4l2",
|
||||
Medias: medias,
|
||||
},
|
||||
dev: dev,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *Producer) Start() error {
|
||||
if err := c.dev.StreamOn(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var bitstream bool
|
||||
switch c.Medias[0].Codecs[0].Name {
|
||||
case core.CodecH264, core.CodecH265:
|
||||
bitstream = true
|
||||
}
|
||||
|
||||
for {
|
||||
buf, err := c.dev.Capture()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
c.Recv += len(buf)
|
||||
|
||||
if len(c.Receivers) == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
if bitstream {
|
||||
buf = annexb.EncodeToAVCC(buf)
|
||||
}
|
||||
|
||||
pkt := &rtp.Packet{
|
||||
Header: rtp.Header{Timestamp: core.Now90000()},
|
||||
Payload: buf,
|
||||
}
|
||||
c.Receivers[0].WriteRTP(pkt)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Producer) Stop() error {
|
||||
_ = c.Connection.Stop()
|
||||
return errors.Join(c.dev.StreamOff(), c.dev.Close())
|
||||
}
|
||||
Reference in New Issue
Block a user