/* # (C) 2008 Hans de Goede # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include /* These headers are not needed by us, but by linux/videodev2.h, which is broken on some systems and doesn't include them itself :( */ #include #include /* end broken header workaround includes */ #include #include "libv4l2.h" #include "libv4l2-priv.h" #define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0])) FILE *v4l2_log_file = NULL; static const char *v4l2_ioctls[] = { /* start v4l2 ioctls */ [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO", [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT", [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY", [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY", [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS", [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS", [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS", [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS", #ifdef VIDIOC_ENUM_FRAMESIZES [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES", [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS", #endif }; void v4l2_log_ioctl(unsigned long int request, void *arg, int result) { const char *ioctl_str; char buf[40]; int saved_errno = errno; if (!v4l2_log_file) return; if (_IOC_TYPE(request) == 'V' && _IOC_NR(request) < ARRAY_SIZE(v4l2_ioctls)) ioctl_str = v4l2_ioctls[_IOC_NR(request)]; else { snprintf(buf, sizeof(buf), "unknown request: %c %d", (int)_IOC_TYPE(request), (int)_IOC_NR(request)); ioctl_str = buf; } fprintf(v4l2_log_file, "request == %s\n", ioctl_str); switch (request) { case VIDIOC_ENUM_FMT: { struct v4l2_fmtdesc *fmt = arg; fprintf(v4l2_log_file, " index: %u, description: %s\n", fmt->index, (result < 0) ? "" : (const char *)fmt->description); } break; case VIDIOC_G_FMT: case VIDIOC_S_FMT: case VIDIOC_TRY_FMT: { struct v4l2_format *fmt = arg; int pixfmt = fmt->fmt.pix.pixelformat; if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { fprintf(v4l2_log_file, " pixelformat: %c%c%c%c %ux%u\n", pixfmt & 0xff, (pixfmt >> 8) & 0xff, (pixfmt >> 16) & 0xff, pixfmt >> 24, fmt->fmt.pix.width, fmt->fmt.pix.height); fprintf(v4l2_log_file, " field: %d bytesperline: %d imagesize%d\n", (int)fmt->fmt.pix.field, (int)fmt->fmt.pix.bytesperline, (int)fmt->fmt.pix.sizeimage); fprintf(v4l2_log_file, " colorspace: %d, priv: %x\n", (int)fmt->fmt.pix.colorspace, (int)fmt->fmt.pix.priv); } } break; case VIDIOC_REQBUFS: { struct v4l2_requestbuffers *req = arg; fprintf(v4l2_log_file, " count: %u type: %d memory: %d\n", req->count, (int)req->type, (int)req->memory); } break; #ifdef VIDIOC_ENUM_FRAMESIZES case VIDIOC_ENUM_FRAMESIZES: { struct v4l2_frmsizeenum *frmsize = arg; int pixfmt = frmsize->pixel_format; fprintf(v4l2_log_file, " index: %u pixelformat: %c%c%c%c", frmsize->index, pixfmt & 0xff, (pixfmt >> 8) & 0xff, (pixfmt >> 16) & 0xff, pixfmt >> 24); switch (frmsize->type) { case V4L2_FRMSIZE_TYPE_DISCRETE: fprintf(v4l2_log_file, " %ux%u\n", frmsize->discrete.width, frmsize->discrete.height); break; case V4L2_FRMSIZE_TYPE_CONTINUOUS: case V4L2_FRMSIZE_TYPE_STEPWISE: fprintf(v4l2_log_file, " %ux%u -> %ux%u\n", frmsize->stepwise.min_width, frmsize->stepwise.min_height, frmsize->stepwise.max_width, frmsize->stepwise.max_height); break; } } break; case VIDIOC_ENUM_FRAMEINTERVALS: { struct v4l2_frmivalenum *frmival = arg; int pixfmt = frmival->pixel_format; fprintf(v4l2_log_file, " index: %u pixelformat: %c%c%c%c %ux%u: ", frmival->index, pixfmt & 0xff, (pixfmt >> 8) & 0xff, (pixfmt >> 16) & 0xff, pixfmt >> 24, frmival->width, frmival->height); switch (frmival->type) { case V4L2_FRMIVAL_TYPE_DISCRETE: fprintf(v4l2_log_file, "%u/%u\n", frmival->discrete.numerator, frmival->discrete.denominator); break; case V4L2_FRMIVAL_TYPE_CONTINUOUS: case V4L2_FRMIVAL_TYPE_STEPWISE: fprintf(v4l2_log_file, "%u/%u -> %u/%u\n", frmival->stepwise.min.numerator, frmival->stepwise.min.denominator, frmival->stepwise.max.numerator, frmival->stepwise.max.denominator); break; } } break; #endif } if (result < 0) fprintf(v4l2_log_file, "result == %d (%s)\n", result, strerror(saved_errno)); else fprintf(v4l2_log_file, "result == %d\n", result); fflush(v4l2_log_file); }