/* * Copyright (C) 2019 Rockchip Electronics Co., Ltd. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL), available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include "process/video.h" #include "uvc-gadget.h" //#include "uvc_iq_tool.h" /* Enable debug prints. */ #undef ENABLE_BUFFER_DEBUG #undef ENABLE_USB_REQUEST_DEBUG #define CLEAR(x) memset (&(x), 0, sizeof (x)) #define max(a, b) (((a) > (b)) ? (a) : (b)) #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) #define clamp(val, min, max) ({ \ typeof(val) __val = (val); \ typeof(min) __min = (min); \ typeof(max) __max = (max); \ (void) (&__val == &__min); \ (void) (&__val == &__max); \ __val = __val < __min ? __min: __val; \ __val > __max ? __max: __val; }) #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ ((x) >> 24) & 0xff /* * The UVC webcam gadget kernel driver (g_webcam.ko) supports changing * the Brightness attribute of the Processing Unit (PU). by default. If * the underlying video capture device supports changing the Brightness * attribute of the image being acquired (like the Virtual Video, VIVI * driver), then we should route this UVC request to the respective * video capture device. * * Incase, there is no actual video capture device associated with the * UVC gadget and we wish to use this application as the final * destination of the UVC specific requests then we should return * pre-cooked (static) responses to GET_CUR(BRIGHTNESS) and * SET_CUR(BRIGHTNESS) commands to keep command verifier test tools like * UVC class specific test suite of USBCV, happy. * * Note that the values taken below are in sync with the VIVI driver and * must be changed for your specific video capture device. These values * also work well in case there in no actual video capture device. */ #define PU_BRIGHTNESS_MIN_VAL 0 #define PU_BRIGHTNESS_MAX_VAL 255 #define PU_BRIGHTNESS_STEP_SIZE 1 #define PU_BRIGHTNESS_DEFAULT_VAL 127 #define PU_CONTRAST_MIN_VAL 0 #define PU_CONTRAST_MAX_VAL 65535 #define PU_CONTRAST_STEP_SIZE 1 #define PU_CONTRAST_DEFAULT_VAL 127 #define PU_HUE_MIN_VAL 0 #define PU_HUE_MAX_VAL 255 #define PU_HUE_STEP_SIZE 1 #define PU_HUE_DEFAULT_VAL 127 #define PU_SATURATION_MIN_VAL 0 #define PU_SATURATION_MAX_VAL 255 #define PU_SATURATION_STEP_SIZE 1 #define PU_SATURATION_DEFAULT_VAL 127 #define PU_SHARPNESS_MIN_VAL 0 #define PU_SHARPNESS_MAX_VAL 255 #define PU_SHARPNESS_STEP_SIZE 1 #define PU_SHARPNESS_DEFAULT_VAL 127 #define PU_GAMMA_MIN_VAL 0 #define PU_GAMMA_MAX_VAL 255 #define PU_GAMMA_STEP_SIZE 1 #define PU_GAMMA_DEFAULT_VAL 127 #define PU_WHITE_BALANCE_TEMPERATURE_MIN_VAL 0 #define PU_WHITE_BALANCE_TEMPERATURE_MAX_VAL 255 #define PU_WHITE_BALANCE_TEMPERATURE_STEP_SIZE 1 #define PU_WHITE_BALANCE_TEMPERATURE_DEFAULT_VAL 127 #define PU_GAIN_MIN_VAL 0 #define PU_GAIN_MAX_VAL 255 #define PU_GAIN_STEP_SIZE 1 #define PU_GAIN_DEFAULT_VAL 127 #define PU_HUE_AUTO_MIN_VAL 0 #define PU_HUE_AUTO_MAX_VAL 255 #define PU_HUE_AUTO_STEP_SIZE 1 #define PU_HUE_AUTO_DEFAULT_VAL 127 /* --------------------------------------------------------------------------- * UVC specific stuff */ struct uvc_frame_info { unsigned int width; unsigned int height; unsigned int intervals[8]; }; struct uvc_format_info { unsigned int fcc; const struct uvc_frame_info *frames; }; static const struct uvc_frame_info uvc_frames_yuyv[] = { { 640, 480, { 333333, 666666, 1000000, 2000000, 0 }, }, { 1280, 720, { 333333, 1000000, 2000000, 0 }, }, { 0, 0, { 0, }, }, }; static const struct uvc_frame_info uvc_frames_mjpeg[] = { { 640, 480, { 333333, 666666, 1000000, 2000000, 0 }, }, { 1280, 720, { 333333, 666666, 1000000, 2000000, 0 }, }, { 1920, 1080, { 333333, 666666, 1000000, 2000000, 0 }, }, { 2560, 1440, { 333333, 666666, 1000000, 2000000, 0 }, }, { 2592, 1944, { 333333, 666666, 1000000, 2000000, 0 }, }, { 0, 0, { 0, }, }, }; static const struct uvc_frame_info uvc_frames_h264[] = { { 640, 480, { 333333, 400000, 500000, 666666, 1000000, 2000000, 0 }, }, { 1280, 720, { 333333, 400000, 500000, 666666, 1000000, 2000000, 0 }, }, { 1920, 1080, { 333333, 400000, 500000, 666666, 1000000, 2000000, 0 }, }, { 0, 0, { 0, }, }, }; static const struct uvc_format_info uvc_formats[] = { { V4L2_PIX_FMT_YUYV, uvc_frames_yuyv }, { V4L2_PIX_FMT_MJPEG, uvc_frames_mjpeg }, { V4L2_PIX_FMT_H264, uvc_frames_h264 }, }; /* --------------------------------------------------------------------------- * V4L2 and UVC device instances */ /* Represents a V4L2 based video capture device */ struct v4l2_device { /* v4l2 device specific */ int v4l2_fd; int is_streaming; char *v4l2_devname; /* v4l2 buffer specific */ enum io_method io; struct buffer *mem; unsigned int nbufs; /* v4l2 buffer queue and dequeue counters */ unsigned long long int qbuf_count; unsigned long long int dqbuf_count; /* uvc device hook */ struct uvc_device *udev; }; /* forward declarations */ static int uvc_video_stream(struct uvc_device *dev, int enable); /* --------------------------------------------------------------------------- * V4L2 streaming related */ static int v4l2_uninit_device(struct v4l2_device *dev) { unsigned int i; int ret; switch (dev->io) { case IO_METHOD_MMAP: for (i = 0; i < dev->nbufs; ++i) { ret = munmap (dev->mem[i].start, dev->mem[i].length); if (ret < 0) { printf("V4L2: munmap failed\n"); return ret; } } free(dev->mem); break; case IO_METHOD_USERPTR: default: break; } return 0; } static int v4l2_reqbufs_mmap(struct v4l2_device *dev, int nbufs) { struct v4l2_requestbuffers req; unsigned int i = 0; int ret; CLEAR(req); req.count = nbufs; req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; req.memory = V4L2_MEMORY_MMAP; ret = ioctl(dev->v4l2_fd, VIDIOC_REQBUFS, &req); if (ret < 0) { if (ret == -EINVAL) printf("V4L2: does not support memory mapping\n"); else printf("V4L2: VIDIOC_REQBUFS error %s (%d).\n", strerror(errno), errno); goto err; } if (!req.count) return 0; if (req.count < 2) { printf("V4L2: Insufficient buffer memory.\n"); ret = -EINVAL; goto err; } /* Map the buffers. */ dev->mem = calloc(req.count, sizeof dev->mem[0]); if (!dev->mem) { printf("V4L2: Out of memory\n"); ret = -ENOMEM; goto err; } for (i = 0; i < req.count; ++i) { memset(&dev->mem[i].buf, 0, sizeof(dev->mem[i].buf)); dev->mem[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; dev->mem[i].buf.memory = V4L2_MEMORY_MMAP; dev->mem[i].buf.index = i; ret = ioctl(dev->v4l2_fd, VIDIOC_QUERYBUF, &(dev->mem[i].buf)); if (ret < 0) { printf("V4L2: VIDIOC_QUERYBUF failed for buf %d: " "%s (%d).\n", i, strerror(errno), errno); ret = -EINVAL; goto err_free; } dev->mem[i].start = mmap (NULL /* start anywhere */, dev->mem[i].buf.length, PROT_READ | PROT_WRITE /* required */, MAP_SHARED /* recommended */, dev->v4l2_fd, dev->mem[i].buf.m.offset); if (MAP_FAILED == dev->mem[i].start) { printf("V4L2: Unable to map buffer %u: %s (%d).\n", i, strerror(errno), errno); dev->mem[i].length = 0; ret = -EINVAL; goto err_free; } dev->mem[i].length = dev->mem[i].buf.length; printf("V4L2: Buffer %u mapped at address %p.\n", i, dev->mem[i].start); } dev->nbufs = req.count; printf("V4L2: %u buffers allocated.\n", req.count); return 0; err_free: free(dev->mem); err: return ret; } static int v4l2_reqbufs_userptr(struct v4l2_device *dev, int nbufs) { struct v4l2_requestbuffers req; int ret; CLEAR(req); req.count = nbufs; req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; req.memory = V4L2_MEMORY_USERPTR; ret = ioctl(dev->v4l2_fd, VIDIOC_REQBUFS, &req); if (ret < 0) { if (ret == -EINVAL) printf("V4L2: does not support user pointer i/o\n"); else printf("V4L2: VIDIOC_REQBUFS error %s (%d).\n", strerror(errno), errno); return ret; } dev->nbufs = req.count; printf("V4L2: %u buffers allocated.\n", req.count); return 0; } static int v4l2_reqbufs(struct v4l2_device *dev, int nbufs) { int ret = 0; switch (dev->io) { case IO_METHOD_MMAP: ret = v4l2_reqbufs_mmap(dev, nbufs); break; case IO_METHOD_USERPTR: ret = v4l2_reqbufs_userptr(dev, nbufs); break; default: ret = -EINVAL; break; } return ret; } static int v4l2_qbuf_mmap(struct v4l2_device *dev) { unsigned int i; int ret; for (i = 0; i < dev->nbufs; ++i) { memset(&dev->mem[i].buf, 0, sizeof(dev->mem[i].buf)); dev->mem[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; dev->mem[i].buf.memory = V4L2_MEMORY_MMAP; dev->mem[i].buf.index = i; ret = ioctl(dev->v4l2_fd, VIDIOC_QBUF, &(dev->mem[i].buf)); if (ret < 0) { printf("V4L2: VIDIOC_QBUF failed : %s (%d).\n", strerror(errno), errno); return ret; } dev->qbuf_count++; } return 0; } static int v4l2_qbuf(struct v4l2_device *dev) { int ret = 0; switch (dev->io) { case IO_METHOD_MMAP: ret = v4l2_qbuf_mmap(dev); break; case IO_METHOD_USERPTR: /* Empty. */ ret = 0; break; default: ret = -EINVAL; break; } return ret; } static int v4l2_process_data(struct v4l2_device *dev) { int ret; struct v4l2_buffer vbuf; struct v4l2_buffer ubuf; /* Return immediately if V4l2 streaming has not yet started. */ if (!dev->is_streaming) return 0; if (dev->udev->first_buffer_queued) if (dev->dqbuf_count >= dev->qbuf_count) return 0; /* Dequeue spent buffer rom V4L2 domain. */ CLEAR(vbuf); vbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; switch (dev->io) { case IO_METHOD_USERPTR: vbuf.memory = V4L2_MEMORY_USERPTR; break; case IO_METHOD_MMAP: default: vbuf.memory = V4L2_MEMORY_MMAP; break; } ret = ioctl(dev->v4l2_fd, VIDIOC_DQBUF, &vbuf); if (ret < 0) return ret; dev->dqbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("Dequeueing buffer at V4L2 side = %d\n", vbuf.index); #endif /* Queue video buffer to UVC domain. */ CLEAR(ubuf); ubuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; switch (dev->udev->io) { case IO_METHOD_MMAP: ubuf.memory = V4L2_MEMORY_MMAP; ubuf.length = vbuf.length; ubuf.index = vbuf.index; ubuf.bytesused = vbuf.bytesused; break; case IO_METHOD_USERPTR: default: ubuf.memory = V4L2_MEMORY_USERPTR; ubuf.m.userptr = (unsigned long) dev->mem[vbuf.index].start; ubuf.length = dev->mem[vbuf.index].length; ubuf.index = vbuf.index; ubuf.bytesused = vbuf.bytesused; break; } ret = ioctl(dev->udev->uvc_fd, VIDIOC_QBUF, &ubuf); if (ret < 0) { printf("UVC: Unable to queue buffer %d: %s (%d).\n", ubuf.index, strerror(errno), errno); /* Check for a USB disconnect/shutdown event. */ if (errno == ENODEV) { dev->udev->uvc_shutdown_requested = 1; printf("UVC: Possible USB shutdown requested from " "Host, seen during VIDIOC_QBUF\n"); return 0; } else { return ret; } } dev->udev->qbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("Queueing buffer at UVC side = %d\n", ubuf.index); #endif if (!dev->udev->first_buffer_queued && !dev->udev->run_standalone) { uvc_video_stream(dev->udev, 1); dev->udev->first_buffer_queued = 1; dev->udev->is_streaming = 1; } return 0; } /* --------------------------------------------------------------------------- * V4L2 generic stuff */ static int v4l2_get_format(struct v4l2_device *dev) { struct v4l2_format fmt; int ret; CLEAR(fmt); fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; ret = ioctl(dev->v4l2_fd, VIDIOC_G_FMT, &fmt); if (ret < 0) { printf("V4L2: Unable to get format: %s (%d).\n", strerror(errno), errno); return ret; } printf("V4L2: Getting current format: %c%c%c%c %ux%u\n", pixfmtstr(fmt.fmt.pix.pixelformat), fmt.fmt.pix.width, fmt.fmt.pix.height); return 0; } static int v4l2_set_format(struct v4l2_device *dev, struct v4l2_format *fmt) { int ret; ret = ioctl(dev->v4l2_fd, VIDIOC_S_FMT, fmt); if (ret < 0) { printf("V4L2: Unable to set format %s (%d).\n", strerror(errno), errno); return ret; } printf("V4L2: Setting format to: %c%c%c%c %ux%u\n", pixfmtstr(fmt->fmt.pix.pixelformat), fmt->fmt.pix.width, fmt->fmt.pix.height); return 0; } static int v4l2_set_ctrl(struct v4l2_device *dev, int new_val, int ctrl) { struct v4l2_queryctrl queryctrl; struct v4l2_control control; int ret; CLEAR(queryctrl); switch (ctrl) { case V4L2_CID_BRIGHTNESS: queryctrl.id = V4L2_CID_BRIGHTNESS; ret = ioctl(dev->v4l2_fd, VIDIOC_QUERYCTRL, &queryctrl); if (-1 == ret) { if (errno != EINVAL) printf("V4L2: VIDIOC_QUERYCTRL" " failed: %s (%d).\n", strerror(errno), errno); else printf ("V4L2_CID_BRIGHTNESS is not" " supported: %s (%d).\n", strerror(errno), errno); return ret; } else if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) { printf ("V4L2_CID_BRIGHTNESS is not supported.\n"); ret = -EINVAL; return ret; } else { CLEAR(control); control.id = V4L2_CID_BRIGHTNESS; control.value = new_val; ret = ioctl(dev->v4l2_fd, VIDIOC_S_CTRL, &control); if (-1 == ret) { printf("V4L2: VIDIOC_S_CTRL failed: %s (%d).\n", strerror(errno), errno); return ret; } } printf ("V4L2: Brightness control changed to value = 0x%x\n", new_val); break; default: /* TODO: We don't support any other controls. */ return -EINVAL; } return 0; } static int v4l2_start_capturing(struct v4l2_device *dev) { int type = V4L2_BUF_TYPE_VIDEO_CAPTURE; int ret; ret = ioctl(dev->v4l2_fd, VIDIOC_STREAMON, &type); if (ret < 0) { printf("V4L2: Unable to start streaming: %s (%d).\n", strerror(errno), errno); return ret; } printf("V4L2: Starting video stream.\n"); return 0; } static int v4l2_stop_capturing(struct v4l2_device *dev) { enum v4l2_buf_type type; int ret; switch (dev->io) { case IO_METHOD_MMAP: type = V4L2_BUF_TYPE_VIDEO_CAPTURE; ret = ioctl(dev->v4l2_fd, VIDIOC_STREAMOFF, &type); if (ret < 0) { printf("V4L2: VIDIOC_STREAMOFF failed: %s (%d).\n", strerror(errno), errno); return ret; } break; default: /* Nothing to do. */ break; } return 0; } static int v4l2_open(struct v4l2_device **v4l2, char *devname, struct v4l2_format *s_fmt) { struct v4l2_device *dev; struct v4l2_capability cap; int fd; int ret = -EINVAL; fd = open(devname, O_RDWR | O_NONBLOCK, 0); if (fd == -1) { printf("V4L2: device open failed: %s (%d).\n", strerror(errno), errno); return ret; } ret = ioctl(fd, VIDIOC_QUERYCAP, &cap); if (ret < 0) { printf ("V4L2: VIDIOC_QUERYCAP failed: %s (%d).\n", strerror(errno), errno); goto err; } if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) { printf("V4L2: %s is no video capture device\n", devname); goto err; } if (!(cap.capabilities & V4L2_CAP_STREAMING)) { printf("V4L2: %s does not support streaming i/o\n", devname); goto err; } dev = calloc(1, sizeof * dev); if (dev == NULL) { ret = -ENOMEM; goto err; } printf("V4L2 device is %s on bus %s\n", cap.card, cap.bus_info); dev->v4l2_fd = fd; /* Get the default image format supported. */ ret = v4l2_get_format(dev); if (ret < 0) goto err_free; /* * Set the desired image format. * Note: VIDIOC_S_FMT may change width and height. */ ret = v4l2_set_format(dev, s_fmt); if (ret < 0) goto err_free; /* Get the changed image format. */ ret = v4l2_get_format(dev); if (ret < 0) goto err_free; printf("v4l2 open succeeded, file descriptor = %d\n", fd); *v4l2 = dev; return 0; err_free: free(dev); err: close (fd); return ret; } static void v4l2_close(struct v4l2_device *dev) { close(dev->v4l2_fd); free(dev); } /* --------------------------------------------------------------------------- * UVC generic stuff */ static int uvc_video_set_format(struct uvc_device *dev) { struct v4l2_format fmt; int ret; CLEAR(fmt); fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; fmt.fmt.pix.width = dev->width; fmt.fmt.pix.height = dev->height; fmt.fmt.pix.pixelformat = dev->fcc; fmt.fmt.pix.field = V4L2_FIELD_NONE; if (dev->fcc == V4L2_PIX_FMT_MJPEG) fmt.fmt.pix.sizeimage = dev->imgsize * 2/*1.5*/; if (dev->fcc == V4L2_PIX_FMT_H264) fmt.fmt.pix.sizeimage = dev->width * dev->height * 2; ret = ioctl(dev->uvc_fd, VIDIOC_S_FMT, &fmt); if (ret < 0) { printf("UVC: Unable to set format %s (%d).\n", strerror(errno), errno); return ret; } printf("UVC: Setting format to: %c%c%c%c %ux%u\n", pixfmtstr(dev->fcc), dev->width, dev->height); return 0; } static int uvc_video_stream(struct uvc_device *dev, int enable) { int type = V4L2_BUF_TYPE_VIDEO_OUTPUT; int ret; if (!enable) { ret = ioctl(dev->uvc_fd, VIDIOC_STREAMOFF, &type); if (ret < 0) { printf("UVC: VIDIOC_STREAMOFF failed: %s (%d).\n", strerror(errno), errno); return ret; } printf("UVC: Stopping video stream.\n"); return 0; } ret = ioctl(dev->uvc_fd, VIDIOC_STREAMON, &type); if (ret < 0) { printf("UVC: Unable to start streaming %s (%d).\n", strerror(errno), errno); return ret; } printf("UVC: Starting video stream.\n"); dev->uvc_shutdown_requested = 0; return 0; } static int uvc_uninit_device(struct uvc_device *dev) { unsigned int i; int ret; switch (dev->io) { case IO_METHOD_MMAP: for (i = 0; i < dev->nbufs; ++i) { ret = munmap(dev->mem[i].start, dev->mem[i].length); if (ret < 0) { printf("UVC: munmap failed\n"); return ret; } } free(dev->mem); break; case IO_METHOD_USERPTR: default: if (dev->run_standalone) { for (i = 0; i < dev->nbufs; ++i) free(dev->dummy_buf[i].start); free(dev->dummy_buf); } break; } return 0; } static int uvc_open(struct uvc_device **uvc, char *devname) { struct uvc_device *dev; struct v4l2_capability cap; int fd; int ret = -EINVAL; fd = open(devname, O_RDWR | O_NONBLOCK); if (fd == -1) { printf("UVC: device open failed: %s (%d).\n", strerror(errno), errno); return ret; } ret = ioctl(fd, VIDIOC_QUERYCAP, &cap); if (ret < 0) { printf("UVC: unable to query uvc device: %s (%d)\n", strerror(errno), errno); goto err; } if (!(cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)) { printf("UVC: %s is no video output device\n", devname); goto err; } dev = calloc(1, sizeof * dev); if (dev == NULL) { ret = -ENOMEM; goto err; } printf("uvc device is %s on bus %s\n", cap.card, cap.bus_info); printf("uvc open succeeded, file descriptor = %d\n", fd); dev->uvc_fd = fd; dev->brightness_val = PU_BRIGHTNESS_DEFAULT_VAL; dev->contrast_val = PU_CONTRAST_DEFAULT_VAL; dev->hue_val = PU_HUE_DEFAULT_VAL; dev->saturation_val = PU_SATURATION_DEFAULT_VAL; dev->sharpness_val = PU_SHARPNESS_DEFAULT_VAL; dev->gamma_val = PU_GAMMA_DEFAULT_VAL; dev->white_balance_temperature_val = PU_WHITE_BALANCE_TEMPERATURE_DEFAULT_VAL; dev->gain_val = PU_GAIN_DEFAULT_VAL; dev->hue_auto_val = PU_HUE_AUTO_DEFAULT_VAL; dev->power_line_frequency_val = V4L2_CID_POWER_LINE_FREQUENCY_50HZ; *uvc = dev; return 0; err: close(fd); return ret; } static void uvc_close(struct uvc_device *dev) { close(dev->uvc_fd); free(dev->imgdata); free(dev); } /* --------------------------------------------------------------------------- * UVC streaming related */ static void uvc_video_fill_buffer(struct uvc_device *dev, struct v4l2_buffer *buf) { #if 0 unsigned int bpl; unsigned int i; switch (dev->fcc) { case V4L2_PIX_FMT_YUYV: /* Fill the buffer with video data. */ bpl = dev->width * 2; for (i = 0; i < dev->height; ++i) memset(dev->mem[buf->index].start + i * bpl, dev->color++, bpl); buf->bytesused = bpl * dev->height; break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: memcpy(dev->mem[buf->index].start, dev->imgdata, dev->imgsize); buf->bytesused = dev->imgsize; break; } #else uvc_user_fill_buffer(dev, buf, dev->video_id); #endif } static int uvc_video_process(struct uvc_device *dev) { struct v4l2_buffer vbuf; unsigned int i; int ret; /* * Return immediately if UVC video output device has not started * streaming yet. */ if (!dev->is_streaming) { usleep(10000); return 0; } /* Prepare a v4l2 buffer to be dequeued from UVC domain. */ CLEAR(dev->ubuf); dev->ubuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; switch (dev->io) { case IO_METHOD_MMAP: dev->ubuf.memory = V4L2_MEMORY_MMAP; break; case IO_METHOD_USERPTR: default: dev->ubuf.memory = V4L2_MEMORY_USERPTR; break; } if (dev->run_standalone) { /* UVC stanalone setup. */ ret = ioctl(dev->uvc_fd, VIDIOC_DQBUF, &dev->ubuf); if (ret < 0) return ret; dev->dqbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("%d: DeQueued buffer at UVC side = %d\n", dev->video_id, dev->ubuf.index); #endif uvc_video_fill_buffer(dev, &dev->ubuf); ret = ioctl(dev->uvc_fd, VIDIOC_QBUF, &dev->ubuf); if (ret < 0) { printf("%d: UVC: Unable to queue buffer: %s (%d).\n", dev->video_id, strerror(errno), errno); return ret; } dev->qbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("%d: ReQueueing buffer at UVC side = %d\n", dev->video_id, dev->ubuf.index); #endif } else { /* UVC - V4L2 integrated path. */ /* * Return immediately if V4L2 video capture device has not * started streaming yet or if QBUF was not called even once on * the UVC side. */ if (!dev->vdev->is_streaming || !dev->first_buffer_queued) return 0; /* * Do not dequeue buffers from UVC side until there are atleast * 2 buffers available at UVC domain. */ if (!dev->uvc_shutdown_requested) if ((dev->dqbuf_count + 1) >= dev->qbuf_count) return 0; /* Dequeue the spent buffer from UVC domain */ ret = ioctl(dev->uvc_fd, VIDIOC_DQBUF, &dev->ubuf); if (ret < 0) return ret; if (dev->io == IO_METHOD_USERPTR) for (i = 0; i < dev->nbufs; ++i) if (dev->ubuf.m.userptr == (unsigned long) dev->vdev->mem[i].start && dev->ubuf.length == dev->vdev->mem[i].length) break; dev->dqbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("DeQueued buffer at UVC side=%d\n", dev->ubuf.index); #endif /* * If the dequeued buffer was marked with state ERROR by the * underlying UVC driver gadget, do not queue the same to V4l2 * and wait for a STREAMOFF event on UVC side corresponding to * set_alt(0). So, now all buffers pending at UVC end will be * dequeued one-by-one and we will enter a state where we once * again wait for a set_alt(1) command from the USB host side. */ if (dev->ubuf.flags & V4L2_BUF_FLAG_ERROR) { dev->uvc_shutdown_requested = 1; printf("UVC: Possible USB shutdown requested from " "Host, seen during VIDIOC_DQBUF\n"); return 0; } /* Queue the buffer to V4L2 domain */ CLEAR(vbuf); vbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; vbuf.memory = V4L2_MEMORY_MMAP; vbuf.index = dev->ubuf.index; ret = ioctl(dev->vdev->v4l2_fd, VIDIOC_QBUF, &vbuf); if (ret < 0) { printf("V4L2: Unable to queue buffer: %s (%d).\n", strerror(errno), errno); return ret; } dev->vdev->qbuf_count++; #ifdef ENABLE_BUFFER_DEBUG printf("ReQueueing buffer at V4L2 side = %d\n", vbuf.index); #endif } return 0; } static int uvc_video_qbuf_mmap(struct uvc_device *dev) { unsigned int i; int ret; for (i = 0; i < dev->nbufs; ++i) { memset(&dev->mem[i].buf, 0, sizeof(dev->mem[i].buf)); dev->mem[i].buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; dev->mem[i].buf.memory = V4L2_MEMORY_MMAP; dev->mem[i].buf.index = i; ret = ioctl(dev->uvc_fd, VIDIOC_QBUF, &(dev->mem[i].buf)); if (ret < 0) { printf("UVC: VIDIOC_QBUF failed : %s (%d).\n", strerror(errno), errno); return ret; } dev->qbuf_count++; } return 0; } static int uvc_video_qbuf_userptr(struct uvc_device *dev) { unsigned int i; int ret; /* UVC standalone setup. */ if (dev->run_standalone) { for (i = 0; i < dev->nbufs; ++i) { struct v4l2_buffer buf; CLEAR(buf); buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; buf.memory = V4L2_MEMORY_USERPTR; buf.m.userptr = (unsigned long)dev->dummy_buf[i].start; buf.length = dev->dummy_buf[i].length; buf.index = i; ret = ioctl(dev->uvc_fd, VIDIOC_QBUF, &buf); if (ret < 0) { printf("UVC: VIDIOC_QBUF failed : %s (%d).\n", strerror(errno), errno); return ret; } dev->qbuf_count++; } } return 0; } static int uvc_video_qbuf(struct uvc_device *dev) { int ret = 0; switch (dev->io) { case IO_METHOD_MMAP: ret = uvc_video_qbuf_mmap(dev); break; case IO_METHOD_USERPTR: ret = uvc_video_qbuf_userptr(dev); break; default: ret = -EINVAL; break; } return ret; } static int uvc_video_reqbufs_mmap(struct uvc_device *dev, int nbufs) { struct v4l2_requestbuffers rb; unsigned int i; int ret; CLEAR(rb); rb.count = nbufs; rb.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; rb.memory = V4L2_MEMORY_MMAP; ret = ioctl(dev->uvc_fd, VIDIOC_REQBUFS, &rb); if (ret < 0) { if (ret == -EINVAL) printf("UVC: does not support memory mapping\n"); else printf("UVC: Unable to allocate buffers: %s (%d).\n", strerror(errno), errno); goto err; } if (!rb.count) return 0; if (rb.count < 2) { printf("UVC: Insufficient buffer memory.\n"); ret = -EINVAL; goto err; } /* Map the buffers. */ dev->mem = calloc(rb.count, sizeof dev->mem[0]); if (!dev->mem) { printf("UVC: Out of memory\n"); ret = -ENOMEM; goto err; } for (i = 0; i < rb.count; ++i) { memset(&dev->mem[i].buf, 0, sizeof(dev->mem[i].buf)); dev->mem[i].buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; dev->mem[i].buf.memory = V4L2_MEMORY_MMAP; dev->mem[i].buf.index = i; ret = ioctl(dev->uvc_fd, VIDIOC_QUERYBUF, &(dev->mem[i].buf)); if (ret < 0) { printf("UVC: VIDIOC_QUERYBUF failed for buf %d: " "%s (%d).\n", i, strerror(errno), errno); ret = -EINVAL; goto err_free; } dev->mem[i].start = mmap(NULL /* start anywhere */, dev->mem[i].buf.length, PROT_READ | PROT_WRITE /* required */, MAP_SHARED /* recommended */, dev->uvc_fd, dev->mem[i].buf.m.offset); if (MAP_FAILED == dev->mem[i].start) { printf("UVC: Unable to map buffer %u: %s (%d).\n", i, strerror(errno), errno); dev->mem[i].length = 0; ret = -EINVAL; goto err_free; } dev->mem[i].length = dev->mem[i].buf.length; printf("UVC: Buffer %u mapped at address %p.\n", i, dev->mem[i].start); } dev->nbufs = rb.count; printf("UVC: %u buffers allocated.\n", rb.count); return 0; err_free: free(dev->mem); err: return ret; } static int uvc_video_reqbufs_userptr(struct uvc_device *dev, int nbufs) { struct v4l2_requestbuffers rb; unsigned int i, j, bpl = 0, payload_size; int ret; CLEAR(rb); rb.count = nbufs; rb.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; rb.memory = V4L2_MEMORY_USERPTR; ret = ioctl(dev->uvc_fd, VIDIOC_REQBUFS, &rb); if (ret < 0) { if (ret == -EINVAL) printf("UVC: does not support user pointer i/o\n"); else printf("UVC: VIDIOC_REQBUFS error %s (%d).\n", strerror(errno), errno); goto err; } if (!rb.count) return 0; dev->nbufs = rb.count; printf("UVC: %u buffers allocated.\n", rb.count); if (dev->run_standalone) { /* Allocate buffers to hold dummy data pattern. */ dev->dummy_buf = calloc(rb.count, sizeof dev->dummy_buf[0]); if (!dev->dummy_buf) { printf("UVC: Out of memory\n"); ret = -ENOMEM; goto err; } switch (dev->fcc) { case V4L2_PIX_FMT_YUYV: bpl = dev->width * 2; payload_size = dev->width * dev->height * 2; break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: payload_size = dev->imgsize; break; default: return -1; } for (i = 0; i < rb.count; ++i) { dev->dummy_buf[i].length = payload_size; dev->dummy_buf[i].start = malloc(payload_size); if (!dev->dummy_buf[i].start) { printf("UVC: Out of memory\n"); ret = -ENOMEM; goto err; } if (V4L2_PIX_FMT_YUYV == dev->fcc) for (j = 0; j < dev->height; ++j) memset(dev->dummy_buf[i].start + j * bpl, dev->color++, bpl); if (V4L2_PIX_FMT_MJPEG == dev->fcc) memcpy(dev->dummy_buf[i].start, dev->imgdata, dev->imgsize); } } return 0; err: return ret; } static int uvc_video_reqbufs(struct uvc_device *dev, int nbufs) { int ret = 0; switch (dev->io) { case IO_METHOD_MMAP: ret = uvc_video_reqbufs_mmap(dev, nbufs); break; case IO_METHOD_USERPTR: ret = uvc_video_reqbufs_userptr(dev, nbufs); break; default: ret = -EINVAL; break; } return ret; } /* * This function is called in response to either: * - A SET_ALT(interface 1, alt setting 1) command from USB host, * if the UVC gadget supports an ISOCHRONOUS video streaming endpoint * or, * * - A UVC_VS_COMMIT_CONTROL command from USB host, if the UVC gadget * supports a BULK type video streaming endpoint. */ static int uvc_handle_streamon_event(struct uvc_device *dev) { int ret; ret = uvc_video_reqbufs(dev, dev->nbufs); if (ret < 0) goto err; if (!dev->run_standalone) { /* UVC - V4L2 integrated path. */ if (IO_METHOD_USERPTR == dev->vdev->io) { /* * Ensure that the V4L2 video capture device has already * some buffers queued. */ ret = v4l2_reqbufs(dev->vdev, dev->vdev->nbufs); if (ret < 0) goto err; } ret = v4l2_qbuf(dev->vdev); if (ret < 0) goto err; /* Start V4L2 capturing now. */ ret = v4l2_start_capturing(dev->vdev); if (ret < 0) goto err; dev->vdev->is_streaming = 1; } /* Common setup. */ /* Queue buffers to UVC domain and start streaming. */ ret = uvc_video_qbuf(dev); if (ret < 0) goto err; if (dev->run_standalone) { uvc_video_stream(dev, 1); dev->first_buffer_queued = 1; dev->is_streaming = 1; } uvc_control_init(dev->width, dev->height, dev->fcc, dev->fps); return 0; err: return ret; } /* --------------------------------------------------------------------------- * UVC Request processing */ static void uvc_fill_streaming_control(struct uvc_device *dev, struct uvc_streaming_control *ctrl, int iframe, int iformat) { const struct uvc_format_info *format; const struct uvc_frame_info *frame; unsigned int nframes; if (iformat < 0) iformat = ARRAY_SIZE(uvc_formats) + iformat; if (iformat < 0 || iformat >= (int)ARRAY_SIZE(uvc_formats)) return; format = &uvc_formats[iformat]; nframes = 0; while (format->frames[nframes].width != 0) ++nframes; if (iframe < 0) iframe = nframes + iframe; if (iframe < 0 || iframe >= (int)nframes) return; frame = &format->frames[iframe]; memset(ctrl, 0, sizeof * ctrl); ctrl->bmHint = 1; ctrl->bFormatIndex = iformat + 1; ctrl->bFrameIndex = iframe + 1; ctrl->dwFrameInterval = frame->intervals[0]; switch (format->fcc) { case V4L2_PIX_FMT_YUYV: ctrl->dwMaxVideoFrameSize = frame->width * frame->height * 2; break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: dev->width = frame->width; dev->height = frame->height; dev->imgsize = frame->width * frame->height * 2/*1.5*/; ctrl->dwMaxVideoFrameSize = dev->imgsize; break; } /* TODO: the UVC maxpayload transfer size should be filled * by the driver. */ if (!dev->bulk) ctrl->dwMaxPayloadTransferSize = (dev->maxpkt) * (dev->mult + 1) * (dev->burst + 1); else ctrl->dwMaxPayloadTransferSize = ctrl->dwMaxVideoFrameSize; ctrl->bmFramingInfo = 3; ctrl->bPreferedVersion = 1; ctrl->bMaxVersion = 1; } static void uvc_events_process_standard(struct uvc_device *dev, struct usb_ctrlrequest *ctrl, struct uvc_request_data *resp) { printf("standard request\n"); (void)dev; (void)ctrl; (void)resp; } static void uvc_events_process_control(struct uvc_device *dev, uint8_t req, uint8_t cs, uint8_t entity_id, uint8_t len, struct uvc_request_data *resp) { printf("req = %d cs = %d entity_id =%d len = %d \n", req, cs, entity_id, len); dev->cs = cs; dev->entity_id = entity_id; switch (entity_id) { case 0: switch (cs) { case UVC_VC_REQUEST_ERROR_CODE_CONTROL: /* Send the request error code last prepared. */ resp->data[0] = dev->request_error_code.data[0]; resp->length = dev->request_error_code.length; break; default: /* * If we were not supposed to handle this * 'cs', prepare an error code response. */ dev->request_error_code.data[0] = 0x06; dev->request_error_code.length = 1; break; } break; /* Camera terminal unit 'UVC_VC_INPUT_TERMINAL'. */ case 1: switch (cs) { /* * We support only 'UVC_CT_AE_MODE_CONTROL' for CAMERA * terminal, as our bmControls[0] = 2 for CT. Also we * support only auto exposure. */ case UVC_CT_AE_MODE_CONTROL: switch (req) { case UVC_SET_CUR: /* Incase of auto exposure, attempts to * programmatically set the auto-adjusted * controls are ignored. */ resp->data[0] = 0x01; resp->length = 1; /* * For every successfully handled control * request set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: /* * TODO: We support Set and Get requests, but * don't support async updates on an video * status (interrupt) endpoint as of * now. */ resp->data[0] = 0x03; resp->length = 1; /* * For every successfully handled control * request set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: case UVC_GET_DEF: case UVC_GET_RES: /* Auto Mode â?? auto Exposure Time, auto Iris. */ resp->data[0] = 0x02; resp->length = 1; /* * For every successfully handled control * request set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: /* * We don't support this control, so STALL the * control ep. */ resp->length = -EL2HLT; /* * For every unsupported control request * set the request error code to appropriate * value. */ dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL: switch (req) { case UVC_GET_INFO: case UVC_GET_MIN: case UVC_GET_MAX: case UVC_GET_CUR: case UVC_GET_DEF: case UVC_GET_RES: resp->data[0] = 100; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: /* * We don't support this control, so STALL the * control ep. */ resp->length = -EL2HLT; /* * For every unsupported control request * set the request error code to appropriate * value. */ dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; } break; case UVC_CT_IRIS_ABSOLUTE_CONTROL: switch (req) { case UVC_GET_INFO: case UVC_GET_CUR: case UVC_GET_MIN: case UVC_GET_MAX: case UVC_GET_DEF: case UVC_GET_RES: resp->data[0] = 10; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: /* * We don't support this control, so STALL the * control ep. */ resp->length = -EL2HLT; /* * For every unsupported control request * set the request error code to appropriate * value. */ dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; } break; default: /* * We don't support this control, so STALL the control * ep. */ resp->length = -EL2HLT; /* * If we were not supposed to handle this * 'cs', prepare a Request Error Code response. */ dev->request_error_code.data[0] = 0x06; dev->request_error_code.length = 1; break; } break; /* processing unit 'UVC_VC_PROCESSING_UNIT' */ case 2: switch (cs) { case UVC_PU_BRIGHTNESS_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; printf("set brightness\n"); break; case UVC_GET_MIN: resp->data[0] = PU_BRIGHTNESS_MIN_VAL; resp->length = 2; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_BRIGHTNESS_MAX_VAL; resp->length = 2; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->brightness_val, resp->length); /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: /* * We support Set and Get requests and don't * support async updates on an interrupt endpt */ resp->data[0] = 0x03; resp->length = 1; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_BRIGHTNESS_DEFAULT_VAL; resp->length = 2; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_BRIGHTNESS_STEP_SIZE; resp->length = 2; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: /* * We don't support this control, so STALL the * default control ep. */ resp->length = -EL2HLT; /* * For every unsupported control request * set the request error code to appropriate * code. */ dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_CONTRAST_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_CONTRAST_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_CONTRAST_MAX_VAL % 256; resp->data[1] = PU_CONTRAST_MAX_VAL / 256; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->contrast_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_CONTRAST_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_CONTRAST_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_HUE_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_HUE_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_HUE_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->hue_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_HUE_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_HUE_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_SATURATION_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_SATURATION_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_SATURATION_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->saturation_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_SATURATION_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_SATURATION_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_SHARPNESS_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_SHARPNESS_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_SHARPNESS_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->sharpness_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_SHARPNESS_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_SHARPNESS_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_GAMMA_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_GAMMA_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_GAMMA_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->gamma_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_GAMMA_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_GAMMA_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_WHITE_BALANCE_TEMPERATURE_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_WHITE_BALANCE_TEMPERATURE_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->white_balance_temperature_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_WHITE_BALANCE_TEMPERATURE_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_WHITE_BALANCE_TEMPERATURE_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_GAIN_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_GAIN_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_GAIN_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->gain_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_GAIN_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_GAIN_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_HUE_AUTO_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = PU_HUE_AUTO_MIN_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = PU_HUE_AUTO_MAX_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 2; memcpy(&resp->data[0], &dev->hue_auto_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = PU_HUE_AUTO_DEFAULT_VAL; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = PU_HUE_AUTO_STEP_SIZE; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case UVC_PU_POWER_LINE_FREQUENCY_CONTROL: switch (req) { case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = 1; memcpy(&resp->data[0], &dev->power_line_frequency_val, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = 1; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; default: /* * We don't support this control, so STALL the control * ep. */ resp->length = -EL2HLT; /* * If we were not supposed to handle this * 'cs', prepare a Request Error Code response. */ dev->request_error_code.data[0] = 0x06; dev->request_error_code.length = 1; break; } break; case 6: switch (cs) { case 1: switch (req) { case UVC_GET_LEN: resp->data[0] = 0x4; resp->length = len; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = 0; resp->length = 4; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = 0xFF; resp->data[1] = 0xFF; resp->data[2] = 0xFF; resp->data[3] = 0xFF; resp->length = 4; /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = len < sizeof(dev->extension_io_data) ? len : sizeof(dev->extension_io_data); memcpy(resp->data, dev->extension_io_data, resp->length); /* * For every successfully handled control * request set the request error code to no * error */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: /* * We support Set and Get requests and don't * support async updates on an interrupt endpt */ resp->data[0] = 0x03; resp->length = 1; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = 0; resp->length = 4; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = 1; resp->length = 4; /* * For every successfully handled control * request, set the request error code to no * error. */ dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: /* * We don't support this control, so STALL the * default control ep. */ resp->length = -EL2HLT; /* * For every unsupported control request * set the request error code to appropriate * code. */ dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case 2: switch (req) { case UVC_GET_LEN: resp->data[0] = 0x10; resp->data[1] = 0x00; resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = 0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = 0xFF; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = len; if (sizeof(dev->ex_ctrl) >= resp->length) memcpy(resp->data, dev->ex_ctrl, resp->length); dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = 0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = 1; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; case 3: switch (req) { case UVC_GET_LEN: if (!dev->ex_ctrl[1] && !dev->ex_ctrl[2]) { resp->data[0] = 0x02; resp->data[1] = 0x00; } else { resp->data[0] = dev->ex_ctrl[1]; resp->data[1] = dev->ex_ctrl[2]; } resp->length = 2; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_SET_CUR: resp->data[0] = 0x0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MIN: resp->data[0] = 0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_MAX: resp->data[0] = 0xFF; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_CUR: resp->length = len; if (sizeof(dev->ex_data) >= resp->length) { //memcpy(resp->data, dev->ex_data, resp->length); //uvc_iq_tool_get_data(dev->ex_ctrl, resp->data, resp->length); } dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_DEF: resp->data[0] = 0; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; case UVC_GET_RES: resp->data[0] = 1; resp->length = len; dev->request_error_code.data[0] = 0x00; dev->request_error_code.length = 1; break; default: resp->length = -EL2HLT; dev->request_error_code.data[0] = 0x07; dev->request_error_code.length = 1; break; } break; default: /* * We don't support this control, so STALL the control * ep. */ resp->length = -EL2HLT; /* * If we were not supposed to handle this * 'cs', prepare a Request Error Code response. */ dev->request_error_code.data[0] = 0x06; dev->request_error_code.length = 1; break; } break; default: /* * If we were not supposed to handle this * 'cs', prepare a Request Error Code response. */ dev->request_error_code.data[0] = 0x06; dev->request_error_code.length = 1; break; } if (resp->length == -EL2HLT) { printf("unsupported: req=%02x, cs=%d, entity_id=%d, len=%d\n", req, cs, entity_id, len); } printf("control request (req %02x cs %02x)\n", req, cs); } static void uvc_events_process_streaming(struct uvc_device *dev, uint8_t req, uint8_t cs, struct uvc_request_data *resp) { struct uvc_streaming_control *ctrl; printf("streaming request (req %02x cs %02x)\n", req, cs); if (cs != UVC_VS_PROBE_CONTROL && cs != UVC_VS_COMMIT_CONTROL) return; ctrl = (struct uvc_streaming_control *)&resp->data; resp->length = sizeof * ctrl; switch (req) { case UVC_SET_CUR: dev->control = cs; resp->length = 34; break; case UVC_GET_CUR: if (cs == UVC_VS_PROBE_CONTROL) memcpy(ctrl, &dev->probe, sizeof * ctrl); else memcpy(ctrl, &dev->commit, sizeof * ctrl); #if 0 printf("bmHint: %u\n", ctrl->bmHint); printf("bFormatIndex: %u\n", ctrl->bFormatIndex); printf("bFrameIndex: %u\n", ctrl->bFrameIndex); printf("dwFrameInterval: %u\n", ctrl->dwFrameInterval); printf("wKeyFrameRate: %u\n", ctrl->wKeyFrameRate); printf("wPFrameRate: %u\n", ctrl->wPFrameRate); printf("wCompQuality: %u\n", ctrl->wCompQuality); printf("wCompWindowSize: %u\n", ctrl->wCompWindowSize); printf("wDelay: %u\n", ctrl->wDelay); printf("dwMaxVideoFrameSize: %u\n", ctrl->dwMaxVideoFrameSize); printf("dwMaxPayloadTransferSize: %u\n", ctrl->dwMaxPayloadTransferSize); printf("dwClockFrequency: %u\n", ctrl->dwClockFrequency); printf("bmFramingInfo: %u\n", ctrl->bmFramingInfo); printf("bPreferedVersion: %u\n", ctrl->bPreferedVersion); printf("bMinVersion: %u\n", ctrl->bMinVersion); printf("bMaxVersion: %u\n", ctrl->bMaxVersion); #endif break; case UVC_GET_MIN: case UVC_GET_MAX: case UVC_GET_DEF: uvc_fill_streaming_control(dev, ctrl, req == UVC_GET_MAX ? -1 : 0, req == UVC_GET_MAX ? -1 : 0); break; case UVC_GET_RES: CLEAR(ctrl); break; case UVC_GET_LEN: resp->data[0] = 0x00; resp->data[1] = 0x22; resp->length = 2; break; case UVC_GET_INFO: resp->data[0] = 0x03; resp->length = 1; break; } } static void uvc_events_process_class(struct uvc_device *dev, struct usb_ctrlrequest *ctrl, struct uvc_request_data *resp) { if ((ctrl->bRequestType & USB_RECIP_MASK) != USB_RECIP_INTERFACE) return; if ((ctrl->wIndex & 0xff) % 2 != get_uvc_streaming_intf() % 2) { uvc_events_process_control(dev, ctrl->bRequest, ctrl->wValue >> 8, ctrl->wIndex >> 8, ctrl->wLength, resp); } else { uvc_events_process_streaming(dev, ctrl->bRequest, ctrl->wValue >> 8, resp); } } static void uvc_events_process_setup(struct uvc_device *dev, struct usb_ctrlrequest *ctrl, struct uvc_request_data *resp) { dev->control = 0; #ifdef ENABLE_USB_REQUEST_DEBUG printf("\nbRequestType %02x bRequest %02x wValue %04x wIndex %04x " "wLength %04x\n", ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex, ctrl->wLength); #endif switch (ctrl->bRequestType & USB_TYPE_MASK) { case USB_TYPE_STANDARD: uvc_events_process_standard(dev, ctrl, resp); break; case USB_TYPE_CLASS: uvc_events_process_class(dev, ctrl, resp); break; default: break; } } static int uvc_events_process_control_data(struct uvc_device *dev, uint8_t cs, uint8_t entity_id, struct uvc_request_data *data) { unsigned int *val = (unsigned int *)data->data; printf(" data = %d, length = %d , current_cs = %d\n", *val , data->length, dev->cs); switch (entity_id) { /* Processing unit 'UVC_VC_PROCESSING_UNIT'. */ case 2: switch (cs) { case UVC_PU_BRIGHTNESS_CONTROL: if (sizeof(dev->brightness_val) >= data->length) { memcpy(&dev->brightness_val, data->data, data->length); //video_record_set_brightness(*val); } if (!dev->run_standalone) /* * Try to change the Brightness attribute on * Video capture device. Note that this try may * succeed or end up with some error on the * video capture side. By default to keep tools * like USBCV's UVC test suite happy, we are * maintaining a local copy of the current * brightness value in 'dev->brightness_val' * variable and we return the same value to the * Host on receiving a GET_CUR(BRIGHTNESS) * control request. * * FIXME: Keeping in view the point discussed * above, notice that we ignore the return value * from the function call below. To be strictly * compliant, we should return the same value * accordingly. */ v4l2_set_ctrl(dev->vdev, dev->brightness_val, V4L2_CID_BRIGHTNESS); break; case UVC_PU_CONTRAST_CONTROL: printf("UVC_PU_CONTRAST_CONTROL receive\n"); if (sizeof(dev->contrast_val) >= data->length) { memcpy(&dev->contrast_val, data->data, data->length); //video_record_set_time(dev->contrast_val); printf("UVC_PU_CONTRAST_CONTROL: 0x%02x 0x%02x\n", data->data[0], data->data[1]); //video_record_set_contrast(*val); } break; case UVC_PU_HUE_CONTROL: if (sizeof(dev->hue_val) >= data->length) { memcpy(&dev->hue_val, data->data, data->length); //video_record_set_hue(*val); } break; case UVC_PU_SATURATION_CONTROL: if (sizeof(dev->saturation_val) >= data->length) { memcpy(&dev->saturation_val, data->data, data->length); //video_record_set_saturation(*val); } break; case UVC_PU_SHARPNESS_CONTROL: if (sizeof(dev->sharpness_val) >= data->length) memcpy(&dev->sharpness_val, data->data, data->length); break; case UVC_PU_GAMMA_CONTROL: if (sizeof(dev->gamma_val) >= data->length) memcpy(&dev->gamma_val, data->data, data->length); break; case UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL: /* 0:auto, 1:Daylight 2:fluocrescence 3:cloudysky 4:tungsten */ if (sizeof(dev->white_balance_temperature_val) >= data->length) { memcpy(&dev->white_balance_temperature_val, data->data, data->length); //api_set_white_balance(*val / 51); } break; case UVC_PU_GAIN_CONTROL: if (sizeof(dev->gain_val) >= data->length) memcpy(&dev->gain_val, data->data, data->length); break; case UVC_PU_HUE_AUTO_CONTROL: if (sizeof(dev->hue_auto_val) >= data->length) memcpy(&dev->hue_auto_val, data->data, data->length); break; case UVC_PU_POWER_LINE_FREQUENCY_CONTROL: if (sizeof(dev->power_line_frequency_val) >= data->length) { memcpy(&dev->power_line_frequency_val, data->data, data->length); //video_record_set_power_line_frequency(*val); } break; default: break; } break; case 6: switch (cs) { case 1: if (sizeof(dev->extension_io_data) >= data->length) { memcpy(dev->extension_io_data, data->data, data->length); printf("extension ctrl 1 set cur data: 0x%02x\n", dev->extension_io_data[0]); } break; case 2: if (sizeof(dev->ex_ctrl) >= data->length) { memcpy(dev->ex_ctrl, data->data, data->length); printf("extension control: 0x%02x 0x%02x 0x%02x\n", dev->ex_ctrl[0], dev->ex_ctrl[1], dev->ex_ctrl[2]); //if (dev->ex_ctrl[0] == 0xc5) // video_record_get_flt_parameter(dev->ex_ctrl[3], dev->ex_ctrl[4]); } break; case 3: if (sizeof(dev->ex_data) >= data->length) { memcpy(dev->ex_data, data->data, data->length); //uvc_iq_tool_set_data(data->data, data->length); printf("extension data: 0x%02x 0x%02x\n", dev->ex_data[0], dev->ex_data[1]); } break; default: break; } break; default: break; } printf("Control Request data phase (cs %02x data %d entity %02x)\n", cs, *val, entity_id); return 0; } static int uvc_events_process_data(struct uvc_device *dev, struct uvc_request_data *data) { struct uvc_streaming_control *target; struct uvc_streaming_control *ctrl; struct v4l2_format fmt; const struct uvc_format_info *format; const struct uvc_frame_info *frame; const unsigned int *interval; unsigned int iformat, iframe; unsigned int nframes; //unsigned int *val = (unsigned int *)data->data; int ret = 0; switch (dev->control) { case UVC_VS_PROBE_CONTROL: printf("setting probe control, length = %d\n", data->length); target = &dev->probe; break; case UVC_VS_COMMIT_CONTROL: printf("setting commit control, length = %d\n", data->length); target = &dev->commit; break; default: printf("setting unknown control, length = %d\n", data->length); printf("cs: %u, entity_id: %u\n", dev->cs, dev->entity_id); ret = uvc_events_process_control_data(dev, dev->cs, dev->entity_id, data); if (ret < 0) goto err; return 0; } ctrl = (struct uvc_streaming_control *)&data->data; iformat = clamp((unsigned int)ctrl->bFormatIndex, 1U, (unsigned int)ARRAY_SIZE(uvc_formats)); format = &uvc_formats[iformat - 1]; nframes = 0; while (format->frames[nframes].width != 0) ++nframes; iframe = clamp((unsigned int)ctrl->bFrameIndex, 1U, nframes); frame = &format->frames[iframe - 1]; interval = frame->intervals; while (interval[0] < ctrl->dwFrameInterval && interval[1]) ++interval; target->bFormatIndex = iformat; target->bFrameIndex = iframe; switch (format->fcc) { case V4L2_PIX_FMT_YUYV: target->dwMaxVideoFrameSize = frame->width * frame->height * 2; break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: if (dev->imgsize == 0) printf("WARNING: MJPEG/h.264 requested and no image loaded.\n"); dev->width = frame->width; dev->height = frame->height; dev->imgsize = frame->width * frame->height * 2/*1.5*/; printf("uvc_events_process_data:format->fcc:%d,dev->width:%d,dev->imgsize:%d\n", format->fcc,dev->width,dev->imgsize); target->dwMaxVideoFrameSize = dev->imgsize; break; } target->dwFrameInterval = *interval; if (dev->control == UVC_VS_COMMIT_CONTROL) { if (uvc_video_get_uvc_process(dev->video_id)) return 0; dev->fcc = format->fcc; dev->width = frame->width; dev->height = frame->height; dev->fps = 10000000 / target->dwFrameInterval; /* * Try to set the default format at the V4L2 video capture * device as requested by the user. */ CLEAR(fmt); fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fmt.fmt.pix.field = V4L2_FIELD_ANY; fmt.fmt.pix.width = frame->width; fmt.fmt.pix.height = frame->height; fmt.fmt.pix.pixelformat = format->fcc; switch (format->fcc) { case V4L2_PIX_FMT_YUYV: fmt.fmt.pix.sizeimage = (fmt.fmt.pix.width * fmt.fmt.pix.height * 2); break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: fmt.fmt.pix.sizeimage = (fmt.fmt.pix.width * fmt.fmt.pix.height * 2/*1.5*/);//dev->imgsize; break; } uvc_set_user_resolution(fmt.fmt.pix.width, fmt.fmt.pix.height, dev->video_id); uvc_set_user_fcc(fmt.fmt.pix.pixelformat, dev->video_id); if (uvc_buffer_init(dev->video_id)) goto err; /* * As per the new commit command received from the UVC host * change the current format selection at both UVC and V4L2 * sides. */ ret = uvc_video_set_format(dev); if (ret < 0) goto err; if (!dev->run_standalone) { /* UVC - V4L2 integrated path. */ ret = v4l2_set_format(dev->vdev, &fmt); if (ret < 0) goto err; } if (dev->bulk) { ret = uvc_handle_streamon_event(dev); if (ret < 0) goto err; } } return 0; err: return ret; } static void uvc_events_process(struct uvc_device *dev) { struct v4l2_event v4l2_event; struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; struct uvc_request_data resp; int ret = 0; ret = ioctl(dev->uvc_fd, VIDIOC_DQEVENT, &v4l2_event); if (ret < 0) { printf("VIDIOC_DQEVENT failed: %s (%d)\n", strerror(errno), errno); return; } memset(&resp, 0, sizeof resp); resp.length = -EL2HLT; switch (v4l2_event.type) { case UVC_EVENT_CONNECT: return; case UVC_EVENT_DISCONNECT: dev->uvc_shutdown_requested = 1; printf("UVC: Possible USB shutdown requested from " "Host, seen via UVC_EVENT_DISCONNECT\n"); return; case UVC_EVENT_SETUP: uvc_events_process_setup(dev, &uvc_event->req, &resp); break; case UVC_EVENT_DATA: ret = uvc_events_process_data(dev, &uvc_event->data); if (ret < 0) break; return; case UVC_EVENT_STREAMON: if (!dev->bulk) uvc_handle_streamon_event(dev); return; case UVC_EVENT_STREAMOFF: /* Stop V4L2 streaming... */ if (!dev->run_standalone && dev->vdev->is_streaming) { /* UVC - V4L2 integrated path. */ v4l2_stop_capturing(dev->vdev); dev->vdev->is_streaming = 0; } /* ... and now UVC streaming.. */ if (dev->is_streaming) { uvc_video_stream(dev, 0); uvc_uninit_device(dev); uvc_video_reqbufs(dev, 0); dev->is_streaming = 0; dev->first_buffer_queued = 0; } uvc_buffer_deinit(dev->video_id); uvc_control_exit(); return; } ret = ioctl(dev->uvc_fd, UVCIOC_SEND_RESPONSE, &resp); if (ret < 0) { printf("UVCIOC_S_EVENT failed: %s (%d)\n", strerror(errno), errno); return; } } static void uvc_events_init(struct uvc_device *dev) { struct v4l2_event_subscription sub; unsigned int payload_size; switch (dev->fcc) { case V4L2_PIX_FMT_YUYV: payload_size = dev->width * dev->height * 2; break; case V4L2_PIX_FMT_MJPEG: case V4L2_PIX_FMT_H264: payload_size = dev->imgsize; break; default: return; } uvc_fill_streaming_control(dev, &dev->probe, 0, 0); uvc_fill_streaming_control(dev, &dev->commit, 0, 0); if (dev->bulk) /* FIXME Crude hack, must be negotiated with the driver. */ dev->probe.dwMaxPayloadTransferSize = dev->commit.dwMaxPayloadTransferSize = payload_size; memset(&sub, 0, sizeof sub); sub.type = UVC_EVENT_SETUP; ioctl(dev->uvc_fd, VIDIOC_SUBSCRIBE_EVENT, &sub); sub.type = UVC_EVENT_DATA; ioctl(dev->uvc_fd, VIDIOC_SUBSCRIBE_EVENT, &sub); sub.type = UVC_EVENT_STREAMON; ioctl(dev->uvc_fd, VIDIOC_SUBSCRIBE_EVENT, &sub); sub.type = UVC_EVENT_STREAMOFF; ioctl(dev->uvc_fd, VIDIOC_SUBSCRIBE_EVENT, &sub); } /* --------------------------------------------------------------------------- * main */ static void image_load(struct uvc_device *dev, const char *img) { int fd = -1; if (img == NULL) return; fd = open(img, O_RDONLY); if (fd == -1) { printf("Unable to open MJPEG image '%s'\n", img); return; } dev->imgsize = lseek(fd, 0, SEEK_END); lseek(fd, 0, SEEK_SET); dev->imgdata = malloc(dev->imgsize); if (dev->imgdata == NULL) { printf("Unable to allocate memory for MJPEG image\n"); dev->imgsize = 0; return; } read(fd, dev->imgdata, dev->imgsize); close(fd); } /* static void usage(const char *argv0) { fprintf(stderr, "Usage: %s [options]\n", argv0); fprintf(stderr, "Available options are\n"); fprintf(stderr, " -b Use bulk mode\n"); fprintf(stderr, " -d Do not use any real V4L2 capture device\n"); fprintf(stderr, " -f Select frame format\n\t" "0 = V4L2_PIX_FMT_YUYV\n\t" "1 = V4L2_PIX_FMT_MJPEG\n\t" "2 = V4L2_PIX_FMT_H264\n"); fprintf(stderr, " -h Print this help screen and exit\n"); fprintf(stderr, " -i image MJPEG image\n"); fprintf(stderr, " -m Streaming mult for ISOC (b/w 0 and 2)\n"); fprintf(stderr, " -n Number of Video buffers (b/w 2 and 32)\n"); fprintf(stderr, " -o Select UVC IO method:\n\t" "0 = MMAP\n\t" "1 = USER_PTR\n"); fprintf(stderr, " -r Select frame resolution:\n\t" "0 = 360p, VGA (640x360)\n\t" "1 = 720p, WXGA (1280x720)\n"); fprintf(stderr, " -s Select USB bus speed (b/w 0 and 2)\n\t" "0 = Full Speed (FS)\n\t" "1 = High Speed (HS)\n\t" "2 = Super Speed (SS)\n"); fprintf(stderr, " -t Streaming burst (b/w 0 and 15)\n"); fprintf(stderr, " -u device UVC Video Output device\n"); fprintf(stderr, " -v device V4L2 Video Capture device\n"); } */ int uvc_gadget_main(int id) { struct uvc_device *udev = NULL; struct v4l2_device *vdev; struct timeval tv; struct v4l2_format fmt; char uvc_devname[32] = {0}; char *v4l2_devname = "/dev/video1"; char *mjpeg_image = NULL; fd_set fdsv, fdsu; int ret, nfds; int bulk_mode = 0; int dummy_data_gen_mode = 1; /* Frame format/resolution related params. */ int default_format = 1; int default_resolution = 1; int nbufs = 4; /* USB speed related params */ int mult = 0; int burst = 0; enum usb_device_speed speed = USB_SPEED_SUPER; /* High-Speed */ enum io_method uvc_io_method = IO_METHOD_MMAP; snprintf(uvc_devname, sizeof(uvc_devname), "/dev/video%d", id); /************************************************************************************ * int opt; while ((opt = getopt(argc, argv, "bdf:hi:m:n:o:r:s:t:u:v:")) != -1) { switch (opt) { case 'b': bulk_mode = 1; break; case 'd': dummy_data_gen_mode = 1; break; case 'f': if (atoi(optarg) < 0 && atoi(optarg) > 1) { usage(argv[0]); return 1; } default_format = atoi(optarg); break; case 'h': usage(argv[0]); return 1; case 'i': mjpeg_image = optarg; break; case 'm': if (atoi(optarg) < 0 && atoi(optarg) > 2) { usage(argv[0]); return 1; } mult = atoi(optarg); printf("Requested Mult value = %d\n", mult); break; case 'n': if (atoi(optarg) < 2 && atoi(optarg) > 32) { usage(argv[0]); return 1; } nbufs = atoi(optarg); printf("Number of buffers requested = %d\n", nbufs); break; case 'o': if (atoi(optarg) < 0 && atoi(optarg) > 1) { usage(argv[0]); return 1; } uvc_io_method = atoi(optarg); printf("UVC: IO method requested is %s\n", (uvc_io_method == IO_METHOD_MMAP) ? "MMAP": "USER_PTR"); break; case 'r': if (atoi(optarg) < 0 && atoi(optarg) > 1) { usage(argv[0]); return 1; } default_resolution = atoi(optarg); break; case 's': if (atoi(optarg) < 0 && atoi(optarg) > 2) { usage(argv[0]); return 1; } speed = atoi(optarg); break; case 't': if (atoi(optarg) < 0 && atoi(optarg) > 15) { usage(argv[0]); return 1; } burst = atoi(optarg); printf("Requested Burst value = %d\n", burst); break; case 'u': uvc_devname = optarg; break; case 'v': v4l2_devname = optarg; break; default: printf("Invalid option '-%c'\n", opt); usage(argv[0]); return 1; } } ************************************************************************************/ if (!dummy_data_gen_mode && !mjpeg_image) { /* * Try to set the default format at the V4L2 video capture * device as requested by the user. */ CLEAR(fmt); fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fmt.fmt.pix.width = (default_resolution == 0) ? 640 : 1280; fmt.fmt.pix.height = (default_resolution == 0) ? 360 : 720; fmt.fmt.pix.sizeimage = (default_format == 0) ? (fmt.fmt.pix.width * fmt.fmt.pix.height * 2) : (fmt.fmt.pix.width * fmt.fmt.pix.height * 1.5); switch (default_format) { case 1: fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; break; case 2: fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_H264; break; case 0: default: fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; break; } fmt.fmt.pix.field = V4L2_FIELD_ANY; /* Open the V4L2 device. */ ret = v4l2_open(&vdev, v4l2_devname, &fmt); if (vdev == NULL || ret < 0) return 1; } /* Open the UVC device. */ ret = uvc_open(&udev, uvc_devname); if (udev == NULL || ret < 0) return 1; udev->uvc_devname = uvc_devname; udev->video_id = id; if (!dummy_data_gen_mode && !mjpeg_image) { vdev->v4l2_devname = v4l2_devname; /* Bind UVC and V4L2 devices. */ udev->vdev = vdev; vdev->udev = udev; } /* Set parameters as passed by user. */ udev->width = (default_resolution == 0) ? 640 : 1280; udev->height = (default_resolution == 0) ? 360 : 720; udev->imgsize = (default_format == 0) ? (udev->width * udev->height * 2) : (udev->width * udev->height * 2/*1.5*/); switch (default_format) { case 1: udev->fcc = V4L2_PIX_FMT_MJPEG; break; case 2: udev->fcc = V4L2_PIX_FMT_H264; break; case 0: default: udev->fcc = V4L2_PIX_FMT_YUYV; break; } uvc_set_user_fcc(udev->fcc, udev->video_id); udev->io = uvc_io_method; udev->bulk = bulk_mode; udev->nbufs = nbufs; udev->mult = mult; udev->burst = burst; udev->speed = speed; udev->control = 0; if (dummy_data_gen_mode || mjpeg_image) /* UVC standalone setup. */ udev->run_standalone = 1; if (!dummy_data_gen_mode && !mjpeg_image) { /* UVC - V4L2 integrated path */ vdev->nbufs = nbufs; /* * IO methods used at UVC and V4L2 domains must be * complementary to avoid any memcpy from the CPU. */ switch (uvc_io_method) { case IO_METHOD_MMAP: vdev->io = IO_METHOD_USERPTR; break; case IO_METHOD_USERPTR: default: vdev->io = IO_METHOD_MMAP; break; } } switch (speed) { case USB_SPEED_FULL: /* Full Speed. */ if (bulk_mode) udev->maxpkt = 64; else udev->maxpkt = 1023; break; case USB_SPEED_HIGH: /* High Speed. */ if (bulk_mode) udev->maxpkt = 512; else udev->maxpkt = 1024; break; case USB_SPEED_SUPER: default: /* Super Speed. */ if (bulk_mode) udev->maxpkt = 1024; else udev->maxpkt = 1024; break; } if (!dummy_data_gen_mode && !mjpeg_image && (IO_METHOD_MMAP == vdev->io)) { /* * Ensure that the V4L2 video capture device has already some * buffers queued. */ v4l2_reqbufs(vdev, vdev->nbufs); } if (mjpeg_image) image_load(udev, mjpeg_image); /* Init UVC events. */ uvc_events_init(udev); uvc_set_user_run_state(true, udev->video_id); while (uvc_get_user_run_state(udev->video_id)) { if (!dummy_data_gen_mode && !mjpeg_image) FD_ZERO(&fdsv); FD_ZERO(&fdsu); /* We want both setup and data events on UVC interface.. */ FD_SET(udev->uvc_fd, &fdsu); fd_set efds = fdsu; fd_set dfds = fdsu; /* ..but only data events on V4L2 interface */ if (!dummy_data_gen_mode && !mjpeg_image) FD_SET(vdev->v4l2_fd, &fdsv); /* Timeout. */ tv.tv_sec = 2; tv.tv_usec = 0; if (!dummy_data_gen_mode && !mjpeg_image) { nfds = max(vdev->v4l2_fd, udev->uvc_fd); ret = select(nfds + 1, &fdsv, &dfds, &efds, &tv); } else { ret = select(udev->uvc_fd + 1, NULL, &dfds, &efds, NULL); } if (-1 == ret) { printf("select error %d, %s\n", errno, strerror (errno)); if (EINTR == errno) continue; break; } if (0 == ret) { if (udev->bulk) continue; printf("select timeout\n"); break; } if (FD_ISSET(udev->uvc_fd, &efds)) uvc_events_process(udev); if (FD_ISSET(udev->uvc_fd, &dfds)) uvc_video_process(udev); if (!dummy_data_gen_mode && !mjpeg_image) if (FD_ISSET(vdev->v4l2_fd, &fdsv)) v4l2_process_data(vdev); } if (!dummy_data_gen_mode && !mjpeg_image && vdev->is_streaming) { /* Stop V4L2 streaming... */ v4l2_stop_capturing(vdev); v4l2_uninit_device(vdev); v4l2_reqbufs(vdev, 0); vdev->is_streaming = 0; } if (udev->is_streaming) { /* ... and now UVC streaming.. */ uvc_video_stream(udev, 0); uvc_uninit_device(udev); uvc_video_reqbufs(udev, 0); udev->is_streaming = 0; } if (!dummy_data_gen_mode && !mjpeg_image) v4l2_close(vdev); uvc_close(udev); uvc_buffer_deinit(id); return 0; }