android4.0 USB Camera Instance (quad) CMOS

The previous article said under the USB camera UVC standard by the way CMOS do the same operation on the basic one to the previous HAL layer I have provided the relevant CMOS interface

Jniexport Jint Jnicall Java_com_dao_usbcam_fimcgzsd_yuvtorgb

If using the same processing image as UVC does not appear, so in a different way it is used in the ICOOL210 board test if using CMOS also need to modify some of the HAL layer modified as follows

First add a function as follows

int select_input (int input) {int ret;ret = IOCTL (FD, Vidioc_s_input, &input); if (ret) {printf ("Xioctl vidioc_s_input F Ailed+++++\n ");}   return ret;}

In Init calls Init to modify the following

Jniexport jint jnicall java_com_dao_usbcam_fimcgzsd_init (jnienv * env, Jclass obj, jint width, jint height,jint Numbuf,jin T ctype) {int Ret;int i;bufnum = numbuf;mwidth = Width;mheight = Height;c_type = ctype;struct V4l2_format fmt;struct v4l2_c    Apability cap;if (C_type = = 2) select_input (0); else if (C_type = 3) select_input (1);    RET = IOCTL (FD, Vidioc_querycap, &cap);        if (Ret < 0) {LOGE ("%d:vidioc_querycap failed\n", __line__);    return-1; } if (! (        Cap.capabilities & V4l2_cap_video_capture) {LOGE ("%d:no CAPTURE devices\n", __line__);    return-1; }memset (&fmt, 0, sizeof (FMT)), Fmt.type = v4l2_buf_type_video_capture;if (C_type > 0) Fmt.fmt.pix.pixelformat = V4l2_pix_fmt_yuyv;elsefmt.fmt.pix.pixelformat = V4l2_pix_fmt_rgb565;if (C_type > 1) {Fmt.fmt.pix.field = V4l2_field _none;//v4l2_field_interlaced;//v4l2_field_none;fmt.fmt.pix.priv = 1;} Fmt.fmt.pix.width = Width;fmt.fmt.pix.height = height;if (IOCTL (FD, VIDIOC_S_FMT, &fmt) &LT    0) {LOGE ("++++%d:set format failed\n", __line__); return-1;}    struct V4l2_requestbuffers req;    Req.count = Numbuf;    Req.type = v4l2_buf_type_video_capture;    Req.memory = V4l2_memory_mmap;    RET = IOCTL (FD, VIDIOC_REQBUFS, &req);        if (Ret < 0) {LOGE ("++++%d:vidioc_reqbufs failed\n", __line__);    return-1;    } buffers = Calloc (req.count, sizeof (*buffers));    if (!buffers) {LOGE ("++++%d Out of memory\n", __line__); return-1; }for (i = 0; i< bufnum; ++i) {memset (&v4l2_buf, 0, sizeof (V4L2_BUF)); v4l2_buf.type = V4l2_buf_type_video_capture;   V4l2_buf.memory = V4l2_memory_mmap;v4l2_buf.index = I;ret = IOCTL (FD, VIDIOC_QUERYBUF, &v4l2_buf); if (Ret < 0) {   LOGE ("+++%d:vidioc_querybuf failed\n", __line__); return-1;}                                     Buffers[i].length = V4l2_buf.length;if ((Buffers[i].start = (char *) mmap (0, V4l2_buf.length, Prot_read | Prot_write, map_shared, FD, V4L2_BUF.M.OFfset)) < 0) {LOGE ("%d:mmap () failed", __line__); return-1;}} RGB = (int *) malloc (sizeof (int) * (mwidth*mheight)); ybuf = (int *) malloc (sizeof (int) * (mwidth*mheight)); return 0;}

The modification place is not many here when the C_type is 2 for the CMOS interface Channel 1 is 3 when the Channel 2

At the same time

void Yuyv422torgb (unsigned char *src,int *mrgb)

Finally need to modify under the test process found red and blue reversed so the last

        *lrgb++ = 0xff000000 | b1<<16 | g1<<8 | R1;          *lrgb++ = 0xff000000 | b2<<16 | g2<<8 | R2;  

Revision changed to

*lrgb++ = 0xff000000 | r1<<16 | g1<<8 | b1;*lrgb++ = 0xff000000 | r2<<16 | g2<<8 | B2;

The relevant changes in the final application are as follows

Class Startthread extends Thread {@Overridepublic void Run () {//TODO auto-generated method Stub//super.run (); while (true) {index = FIMCGZSD.DQBUF (Mdata), if (Index < 0) {OnDestroy (); break;} Switch (CType) {case 0:mhandler.post (mupdateui); bitmap = Bitmapfactory.decodebytearray (mdata, 0, Width * height); FIMCGZSD.QBUF (index); break;case 1:fimcgzsd.pixeltobmp (BMP); Mhandler.post (mupdateui); bitmap = bmp; FIMCGZSD.QBUF (index); break;case 2:case 3:                    Fimcgzsd.yuvtorgb (Mdata, RGB);                     Mhandler.post (MUPDATEUI);                    Bitmap = Bitmap.createbitmap (rgb,width,height,bitmap.config.argb_8888);                    FIMCGZSD.QBUF (index); break;}}}

The final application is modified as follows here is mainly to implement the functional interface is relatively simple

The CMOS effect is as follows