diff options
author | Hans Verkuil <hverkuil@xs4all.nl> | 2010-12-25 13:27:47 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-12-29 13:17:08 +0300 |
commit | 745da4280f272840976d47afba22ed853f07e1b2 (patch) | |
tree | 16808326f76543f443855b2d3b4990f3389bd49a /drivers/media/video/usbvideo | |
parent | 5772dcaa790851ec068afcd0d1f160d801b1126e (diff) | |
download | linux-745da4280f272840976d47afba22ed853f07e1b2.tar.xz |
[media] usbvideo: deprecate the vicam driver
Move usbvideo to staging and mark it deprecated.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/usbvideo')
-rw-r--r-- | drivers/media/video/usbvideo/Kconfig | 12 | ||||
-rw-r--r-- | drivers/media/video/usbvideo/Makefile | 2 | ||||
-rw-r--r-- | drivers/media/video/usbvideo/usbvideo.c | 2230 | ||||
-rw-r--r-- | drivers/media/video/usbvideo/usbvideo.h | 395 | ||||
-rw-r--r-- | drivers/media/video/usbvideo/vicam.c | 952 |
5 files changed, 0 insertions, 3591 deletions
diff --git a/drivers/media/video/usbvideo/Kconfig b/drivers/media/video/usbvideo/Kconfig deleted file mode 100644 index 357860d42a8b..000000000000 --- a/drivers/media/video/usbvideo/Kconfig +++ /dev/null @@ -1,12 +0,0 @@ -config VIDEO_USBVIDEO - tristate - -config USB_VICAM - tristate "USB 3com HomeConnect (aka vicam) support (EXPERIMENTAL)" - depends on VIDEO_V4L1 && EXPERIMENTAL - select VIDEO_USBVIDEO - ---help--- - Say Y here if you have 3com homeconnect camera (vicam). - - To compile this driver as a module, choose M here: the - module will be called vicam. diff --git a/drivers/media/video/usbvideo/Makefile b/drivers/media/video/usbvideo/Makefile deleted file mode 100644 index 3c99a9a2d8d3..000000000000 --- a/drivers/media/video/usbvideo/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -obj-$(CONFIG_VIDEO_USBVIDEO) += usbvideo.o -obj-$(CONFIG_USB_VICAM) += vicam.o diff --git a/drivers/media/video/usbvideo/usbvideo.c b/drivers/media/video/usbvideo/usbvideo.c deleted file mode 100644 index f1fcf9744961..000000000000 --- a/drivers/media/video/usbvideo/usbvideo.c +++ /dev/null @@ -1,2230 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/vmalloc.h> -#include <linux/init.h> -#include <linux/spinlock.h> - -#include <asm/io.h> - -#include "usbvideo.h" - -#if defined(MAP_NR) -#define virt_to_page(v) MAP_NR(v) /* Kernels 2.2.x */ -#endif - -static int video_nr = -1; -module_param(video_nr, int, 0); - -/* - * Local prototypes. - */ -static void usbvideo_Disconnect(struct usb_interface *intf); -static void usbvideo_CameraRelease(struct uvd *uvd); - -static long usbvideo_v4l_ioctl(struct file *file, - unsigned int cmd, unsigned long arg); -static int usbvideo_v4l_mmap(struct file *file, struct vm_area_struct *vma); -static int usbvideo_v4l_open(struct file *file); -static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos); -static int usbvideo_v4l_close(struct file *file); - -static int usbvideo_StartDataPump(struct uvd *uvd); -static void usbvideo_StopDataPump(struct uvd *uvd); -static int usbvideo_GetFrame(struct uvd *uvd, int frameNum); -static int usbvideo_NewFrame(struct uvd *uvd, int framenum); -static void usbvideo_SoftwareContrastAdjustment(struct uvd *uvd, - struct usbvideo_frame *frame); - -/*******************************/ -/* Memory management functions */ -/*******************************/ -static void *usbvideo_rvmalloc(unsigned long size) -{ - void *mem; - unsigned long adr; - - size = PAGE_ALIGN(size); - mem = vmalloc_32(size); - if (!mem) - return NULL; - - memset(mem, 0, size); /* Clear the ram out, no junk to the user */ - adr = (unsigned long) mem; - while (size > 0) { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - return mem; -} - -static void usbvideo_rvfree(void *mem, unsigned long size) -{ - unsigned long adr; - - if (!mem) - return; - - adr = (unsigned long) mem; - while ((long) size > 0) { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - vfree(mem); -} - -static void RingQueue_Initialize(struct RingQueue *rq) -{ - assert(rq != NULL); - init_waitqueue_head(&rq->wqh); -} - -static void RingQueue_Allocate(struct RingQueue *rq, int rqLen) -{ - /* Make sure the requested size is a power of 2 and - round up if necessary. This allows index wrapping - using masks rather than modulo */ - - int i = 1; - assert(rq != NULL); - assert(rqLen > 0); - - while(rqLen >> i) - i++; - if(rqLen != 1 << (i-1)) - rqLen = 1 << i; - - rq->length = rqLen; - rq->ri = rq->wi = 0; - rq->queue = usbvideo_rvmalloc(rq->length); - assert(rq->queue != NULL); -} - -static int RingQueue_IsAllocated(const struct RingQueue *rq) -{ - if (rq == NULL) - return 0; - return (rq->queue != NULL) && (rq->length > 0); -} - -static void RingQueue_Free(struct RingQueue *rq) -{ - assert(rq != NULL); - if (RingQueue_IsAllocated(rq)) { - usbvideo_rvfree(rq->queue, rq->length); - rq->queue = NULL; - rq->length = 0; - } -} - -int RingQueue_Dequeue(struct RingQueue *rq, unsigned char *dst, int len) -{ - int rql, toread; - - assert(rq != NULL); - assert(dst != NULL); - - rql = RingQueue_GetLength(rq); - if(!rql) - return 0; - - /* Clip requested length to available data */ - if(len > rql) - len = rql; - - toread = len; - if(rq->ri > rq->wi) { - /* Read data from tail */ - int read = (toread < (rq->length - rq->ri)) ? toread : rq->length - rq->ri; - memcpy(dst, rq->queue + rq->ri, read); - toread -= read; - dst += read; - rq->ri = (rq->ri + read) & (rq->length-1); - } - if(toread) { - /* Read data from head */ - memcpy(dst, rq->queue + rq->ri, toread); - rq->ri = (rq->ri + toread) & (rq->length-1); - } - return len; -} - -EXPORT_SYMBOL(RingQueue_Dequeue); - -int RingQueue_Enqueue(struct RingQueue *rq, const unsigned char *cdata, int n) -{ - int enqueued = 0; - - assert(rq != NULL); - assert(cdata != NULL); - assert(rq->length > 0); - while (n > 0) { - int m, q_avail; - - /* Calculate the largest chunk that fits the tail of the ring */ - q_avail = rq->length - rq->wi; - if (q_avail <= 0) { - rq->wi = 0; - q_avail = rq->length; - } - m = n; - assert(q_avail > 0); - if (m > q_avail) - m = q_avail; - - memcpy(rq->queue + rq->wi, cdata, m); - RING_QUEUE_ADVANCE_INDEX(rq, wi, m); - cdata += m; - enqueued += m; - n -= m; - } - return enqueued; -} - -EXPORT_SYMBOL(RingQueue_Enqueue); - -static void RingQueue_InterruptibleSleepOn(struct RingQueue *rq) -{ - assert(rq != NULL); - interruptible_sleep_on(&rq->wqh); -} - -void RingQueue_WakeUpInterruptible(struct RingQueue *rq) -{ - assert(rq != NULL); - if (waitqueue_active(&rq->wqh)) - wake_up_interruptible(&rq->wqh); -} - -EXPORT_SYMBOL(RingQueue_WakeUpInterruptible); - -void RingQueue_Flush(struct RingQueue *rq) -{ - assert(rq != NULL); - rq->ri = 0; - rq->wi = 0; -} - -EXPORT_SYMBOL(RingQueue_Flush); - - -/* - * usbvideo_VideosizeToString() - * - * This procedure converts given videosize value to readable string. - * - * History: - * 07-Aug-2000 Created. - * 19-Oct-2000 Reworked for usbvideo module. - */ -static void usbvideo_VideosizeToString(char *buf, int bufLen, videosize_t vs) -{ - char tmp[40]; - int n; - - n = 1 + sprintf(tmp, "%ldx%ld", VIDEOSIZE_X(vs), VIDEOSIZE_Y(vs)); - assert(n < sizeof(tmp)); - if ((buf == NULL) || (bufLen < n)) - err("usbvideo_VideosizeToString: buffer is too small."); - else - memmove(buf, tmp, n); -} - -/* - * usbvideo_OverlayChar() - * - * History: - * 01-Feb-2000 Created. - */ -static void usbvideo_OverlayChar(struct uvd *uvd, struct usbvideo_frame *frame, - int x, int y, int ch) -{ - static const unsigned short digits[16] = { - 0xF6DE, /* 0 */ - 0x2492, /* 1 */ - 0xE7CE, /* 2 */ - 0xE79E, /* 3 */ - 0xB792, /* 4 */ - 0xF39E, /* 5 */ - 0xF3DE, /* 6 */ - 0xF492, /* 7 */ - 0xF7DE, /* 8 */ - 0xF79E, /* 9 */ - 0x77DA, /* a */ - 0xD75C, /* b */ - 0xF24E, /* c */ - 0xD6DC, /* d */ - 0xF34E, /* e */ - 0xF348 /* f */ - }; - unsigned short digit; - int ix, iy; - int value; - - if ((uvd == NULL) || (frame == NULL)) - return; - - value = hex_to_bin(ch); - if (value < 0) - return; - digit = digits[value]; - - for (iy=0; iy < 5; iy++) { - for (ix=0; ix < 3; ix++) { - if (digit & 0x8000) { - if (uvd->paletteBits & (1L << VIDEO_PALETTE_RGB24)) { -/* TODO */ RGB24_PUTPIXEL(frame, x+ix, y+iy, 0xFF, 0xFF, 0xFF); - } - } - digit = digit << 1; - } - } -} - -/* - * usbvideo_OverlayString() - * - * History: - * 01-Feb-2000 Created. - */ -static void usbvideo_OverlayString(struct uvd *uvd, struct usbvideo_frame *frame, - int x, int y, const char *str) -{ - while (*str) { - usbvideo_OverlayChar(uvd, frame, x, y, *str); - str++; - x += 4; /* 3 pixels character + 1 space */ - } -} - -/* - * usbvideo_OverlayStats() - * - * Overlays important debugging information. - * - * History: - * 01-Feb-2000 Created. - */ -static void usbvideo_OverlayStats(struct uvd *uvd, struct usbvideo_frame *frame) -{ - const int y_diff = 8; - char tmp[16]; - int x = 10, y=10; - long i, j, barLength; - const int qi_x1 = 60, qi_y1 = 10; - const int qi_x2 = VIDEOSIZE_X(frame->request) - 10, qi_h = 10; - - /* Call the user callback, see if we may proceed after that */ - if (VALID_CALLBACK(uvd, overlayHook)) { - if (GET_CALLBACK(uvd, overlayHook)(uvd, frame) < 0) - return; - } - - /* - * We draw a (mostly) hollow rectangle with qi_xxx coordinates. - * Left edge symbolizes the queue index 0; right edge symbolizes - * the full capacity of the queue. - */ - barLength = qi_x2 - qi_x1 - 2; - if ((barLength > 10) && (uvd->paletteBits & (1L << VIDEO_PALETTE_RGB24))) { -/* TODO */ long u_lo, u_hi, q_used; - long m_ri, m_wi, m_lo, m_hi; - - /* - * Determine fill zones (used areas of the queue): - * 0 xxxxxxx u_lo ...... uvd->dp.ri xxxxxxxx u_hi ..... uvd->dp.length - * - * if u_lo < 0 then there is no first filler. - */ - - q_used = RingQueue_GetLength(&uvd->dp); - if ((uvd->dp.ri + q_used) >= uvd->dp.length) { - u_hi = uvd->dp.length; - u_lo = (q_used + uvd->dp.ri) & (uvd->dp.length-1); - } else { - u_hi = (q_used + uvd->dp.ri); - u_lo = -1; - } - - /* Convert byte indices into screen units */ - m_ri = qi_x1 + ((barLength * uvd->dp.ri) / uvd->dp.length); - m_wi = qi_x1 + ((barLength * uvd->dp.wi) / uvd->dp.length); - m_lo = (u_lo > 0) ? (qi_x1 + ((barLength * u_lo) / uvd->dp.length)) : -1; - m_hi = qi_x1 + ((barLength * u_hi) / uvd->dp.length); - - for (j=qi_y1; j < (qi_y1 + qi_h); j++) { - for (i=qi_x1; i < qi_x2; i++) { - /* Draw border lines */ - if ((j == qi_y1) || (j == (qi_y1 + qi_h - 1)) || - (i == qi_x1) || (i == (qi_x2 - 1))) { - RGB24_PUTPIXEL(frame, i, j, 0xFF, 0xFF, 0xFF); - continue; - } - /* For all other points the Y coordinate does not matter */ - if ((i >= m_ri) && (i <= (m_ri + 3))) { - RGB24_PUTPIXEL(frame, i, j, 0x00, 0xFF, 0x00); - } else if ((i >= m_wi) && (i <= (m_wi + 3))) { - RGB24_PUTPIXEL(frame, i, j, 0xFF, 0x00, 0x00); - } else if ((i < m_lo) || ((i > m_ri) && (i < m_hi))) - RGB24_PUTPIXEL(frame, i, j, 0x00, 0x00, 0xFF); - } - } - } - - sprintf(tmp, "%8lx", uvd->stats.frame_num); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.urb_count); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.urb_length); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.data_count); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.header_count); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.iso_skip_count); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8lx", uvd->stats.iso_err_count); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8x", uvd->vpic.colour); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8x", uvd->vpic.hue); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8x", uvd->vpic.brightness >> 8); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8x", uvd->vpic.contrast >> 12); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; - - sprintf(tmp, "%8d", uvd->vpic.whiteness >> 8); - usbvideo_OverlayString(uvd, frame, x, y, tmp); - y += y_diff; -} - -/* - * usbvideo_ReportStatistics() - * - * This procedure prints packet and transfer statistics. - * - * History: - * 14-Jan-2000 Corrected default multiplier. - */ -static void usbvideo_ReportStatistics(const struct uvd *uvd) -{ - if ((uvd != NULL) && (uvd->stats.urb_count > 0)) { - unsigned long allPackets, badPackets, goodPackets, percent; - allPackets = uvd->stats.urb_count * CAMERA_URB_FRAMES; - badPackets = uvd->stats.iso_skip_count + uvd->stats.iso_err_count; - goodPackets = allPackets - badPackets; - /* Calculate percentage wisely, remember integer limits */ - assert(allPackets != 0); - if (goodPackets < (((unsigned long)-1)/100)) - percent = (100 * goodPackets) / allPackets; - else - percent = goodPackets / (allPackets / 100); - dev_info(&uvd->dev->dev, - "Packet Statistics: Total=%lu. Empty=%lu. Usage=%lu%%\n", - allPackets, badPackets, percent); - if (uvd->iso_packet_len > 0) { - unsigned long allBytes, xferBytes; - char multiplier = ' '; - allBytes = allPackets * uvd->iso_packet_len; - xferBytes = uvd->stats.data_count; - assert(allBytes != 0); - if (xferBytes < (((unsigned long)-1)/100)) - percent = (100 * xferBytes) / allBytes; - else - percent = xferBytes / (allBytes / 100); - /* Scale xferBytes for easy reading */ - if (xferBytes > 10*1024) { - xferBytes /= 1024; - multiplier = 'K'; - if (xferBytes > 10*1024) { - xferBytes /= 1024; - multiplier = 'M'; - if (xferBytes > 10*1024) { - xferBytes /= 1024; - multiplier = 'G'; - if (xferBytes > 10*1024) { - xferBytes /= 1024; - multiplier = 'T'; - } - } - } - } - dev_info(&uvd->dev->dev, - "Transfer Statistics: Transferred=%lu%cB Usage=%lu%%\n", - xferBytes, multiplier, percent); - } - } -} - -/* - * usbvideo_TestPattern() - * - * Procedure forms a test pattern (yellow grid on blue background). - * - * Parameters: - * fullframe: if TRUE then entire frame is filled, otherwise the procedure - * continues from the current scanline. - * pmode 0: fill the frame with solid blue color (like on VCR or TV) - * 1: Draw a colored grid - * - * History: - * 01-Feb-2000 Created. - */ -void usbvideo_TestPattern(struct uvd *uvd, int fullframe, int pmode) -{ - struct usbvideo_frame *frame; - int num_cell = 0; - int scan_length = 0; - static int num_pass; - - if (uvd == NULL) { - err("%s: uvd == NULL", __func__); - return; - } - if ((uvd->curframe < 0) || (uvd->curframe >= USBVIDEO_NUMFRAMES)) { - err("%s: uvd->curframe=%d.", __func__, uvd->curframe); - return; - } - - /* Grab the current frame */ - frame = &uvd->frame[uvd->curframe]; - - /* Optionally start at the beginning */ - if (fullframe) { - frame->curline = 0; - frame->seqRead_Length = 0; - } -#if 0 - { /* For debugging purposes only */ - char tmp[20]; - usbvideo_VideosizeToString(tmp, sizeof(tmp), frame->request); - dev_info(&uvd->dev->dev, "testpattern: frame=%s\n", tmp); - } -#endif - /* Form every scan line */ - for (; frame->curline < VIDEOSIZE_Y(frame->request); frame->curline++) { - int i; - unsigned char *f = frame->data + - (VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL * frame->curline); - for (i=0; i < VIDEOSIZE_X(frame->request); i++) { - unsigned char cb=0x80; - unsigned char cg = 0; - unsigned char cr = 0; - - if (pmode == 1) { - if (frame->curline % 32 == 0) - cb = 0, cg = cr = 0xFF; - else if (i % 32 == 0) { - if (frame->curline % 32 == 1) - num_cell++; - cb = 0, cg = cr = 0xFF; - } else { - cb = ((num_cell*7) + num_pass) & 0xFF; - cg = ((num_cell*5) + num_pass*2) & 0xFF; - cr = ((num_cell*3) + num_pass*3) & 0xFF; - } - } else { - /* Just the blue screen */ - } - - *f++ = cb; - *f++ = cg; - *f++ = cr; - scan_length += 3; - } - } - - frame->frameState = FrameState_Done; - frame->seqRead_Length += scan_length; - ++num_pass; - - /* We do this unconditionally, regardless of FLAGS_OVERLAY_STATS */ - usbvideo_OverlayStats(uvd, frame); -} - -EXPORT_SYMBOL(usbvideo_TestPattern); - - -#ifdef DEBUG -/* - * usbvideo_HexDump() - * - * A debugging tool. Prints hex dumps. - * - * History: - * 29-Jul-2000 Added printing of offsets. - */ -void usbvideo_HexDump(const unsigned char *data, int len) -{ - const int bytes_per_line = 32; - char tmp[128]; /* 32*3 + 5 */ - int i, k; - - for (i=k=0; len > 0; i++, len--) { - if (i > 0 && ((i % bytes_per_line) == 0)) { - printk("%s\n", tmp); - k=0; - } - if ((i % bytes_per_line) == 0) - k += sprintf(&tmp[k], "%04x: ", i); - k += sprintf(&tmp[k], "%02x ", data[i]); - } - if (k > 0) - printk("%s\n", tmp); -} - -EXPORT_SYMBOL(usbvideo_HexDump); - -#endif - -/* ******************************************************************** */ - -/* XXX: this piece of crap really wants some error handling.. */ -static int usbvideo_ClientIncModCount(struct uvd *uvd) -{ - if (uvd == NULL) { - err("%s: uvd == NULL", __func__); - return -EINVAL; - } - if (uvd->handle == NULL) { - err("%s: uvd->handle == NULL", __func__); - return -EINVAL; - } - if (!try_module_get(uvd->handle->md_module)) { - err("%s: try_module_get() == 0", __func__); - return -ENODEV; - } - return 0; -} - -static void usbvideo_ClientDecModCount(struct uvd *uvd) -{ - if (uvd == NULL) { - err("%s: uvd == NULL", __func__); - return; - } - if (uvd->handle == NULL) { - err("%s: uvd->handle == NULL", __func__); - return; - } - if (uvd->handle->md_module == NULL) { - err("%s: uvd->handle->md_module == NULL", __func__); - return; - } - module_put(uvd->handle->md_module); -} - -int usbvideo_register( - struct usbvideo **pCams, - const int num_cams, - const int num_extra, - const char *driverName, - const struct usbvideo_cb *cbTbl, - struct module *md, - const struct usb_device_id *id_table) -{ - struct usbvideo *cams; - int i, base_size, result; - - /* Check parameters for sanity */ - if ((num_cams <= 0) || (pCams == NULL) || (cbTbl == NULL)) { - err("%s: Illegal call", __func__); - return -EINVAL; - } - - /* Check registration callback - must be set! */ - if (cbTbl->probe == NULL) { - err("%s: probe() is required!", __func__); - return -EINVAL; - } - - base_size = num_cams * sizeof(struct uvd) + sizeof(struct usbvideo); - cams = kzalloc(base_size, GFP_KERNEL); - if (cams == NULL) { - err("Failed to allocate %d. bytes for usbvideo struct", base_size); - return -ENOMEM; - } - dbg("%s: Allocated $%p (%d. bytes) for %d. cameras", - __func__, cams, base_size, num_cams); - - /* Copy callbacks, apply defaults for those that are not set */ - memmove(&cams->cb, cbTbl, sizeof(cams->cb)); - if (cams->cb.getFrame == NULL) - cams->cb.getFrame = usbvideo_GetFrame; - if (cams->cb.disconnect == NULL) - cams->cb.disconnect = usbvideo_Disconnect; - if (cams->cb.startDataPump == NULL) - cams->cb.startDataPump = usbvideo_StartDataPump; - if (cams->cb.stopDataPump == NULL) - cams->cb.stopDataPump = usbvideo_StopDataPump; - - cams->num_cameras = num_cams; - cams->cam = (struct uvd *) &cams[1]; - cams->md_module = md; - mutex_init(&cams->lock); /* to 1 == available */ - - for (i = 0; i < num_cams; i++) { - struct uvd *up = &cams->cam[i]; - - up->handle = cams; - - /* Allocate user_data separately because of kmalloc's limits */ - if (num_extra > 0) { - up->user_size = num_cams * num_extra; - up->user_data = kmalloc(up->user_size, GFP_KERNEL); - if (up->user_data == NULL) { - err("%s: Failed to allocate user_data (%d. bytes)", - __func__, up->user_size); - while (i) { - up = &cams->cam[--i]; - kfree(up->user_data); - } - kfree(cams); - return -ENOMEM; - } - dbg("%s: Allocated cams[%d].user_data=$%p (%d. bytes)", - __func__, i, up->user_data, up->user_size); - } - } - - /* - * Register ourselves with USB stack. - */ - strcpy(cams->drvName, (driverName != NULL) ? driverName : "Unknown"); - cams->usbdrv.name = cams->drvName; - cams->usbdrv.probe = cams->cb.probe; - cams->usbdrv.disconnect = cams->cb.disconnect; - cams->usbdrv.id_table = id_table; - - /* - * Update global handle to usbvideo. This is very important - * because probe() can be called before usb_register() returns. - * If the handle is not yet updated then the probe() will fail. - */ - *pCams = cams; - result = usb_register(&cams->usbdrv); - if (result) { - for (i = 0; i < num_cams; i++) { - struct uvd *up = &cams->cam[i]; - kfree(up->user_data); - } - kfree(cams); - } - - return result; -} - -EXPORT_SYMBOL(usbvideo_register); - -/* - * usbvideo_Deregister() - * - * Procedure frees all usbvideo and user data structures. Be warned that - * if you had some dynamically allocated components in ->user field then - * you should free them before calling here. - */ -void usbvideo_Deregister(struct usbvideo **pCams) -{ - struct usbvideo *cams; - int i; - - if (pCams == NULL) { - err("%s: pCams == NULL", __func__); - return; - } - cams = *pCams; - if (cams == NULL) { - err("%s: cams == NULL", __func__); - return; - } - - dbg("%s: Deregistering %s driver.", __func__, cams->drvName); - usb_deregister(&cams->usbdrv); - - dbg("%s: Deallocating cams=$%p (%d. cameras)", __func__, cams, cams->num_cameras); - for (i=0; i < cams->num_cameras; i++) { - struct uvd *up = &cams->cam[i]; - int warning = 0; - - if (up->user_data != NULL) { - if (up->user_size <= 0) - ++warning; - } else { - if (up->user_size > 0) - ++warning; - } - if (warning) { - err("%s: Warning: user_data=$%p user_size=%d.", - __func__, up->user_data, up->user_size); - } else { - dbg("%s: Freeing %d. $%p->user_data=$%p", - __func__, i, up, up->user_data); - kfree(up->user_data); - } - } - /* Whole array was allocated in one chunk */ - dbg("%s: Freed %d uvd structures", - __func__, cams->num_cameras); - kfree(cams); - *pCams = NULL; -} - -EXPORT_SYMBOL(usbvideo_Deregister); - -/* - * usbvideo_Disconnect() - * - * This procedure stops all driver activity. Deallocation of - * the interface-private structure (pointed by 'ptr') is done now - * (if we don't have any open files) or later, when those files - * are closed. After that driver should be removable. - * - * This code handles surprise removal. The uvd->user is a counter which - * increments on open() and decrements on close(). If we see here that - * this counter is not 0 then we have a client who still has us opened. - * We set uvd->remove_pending flag as early as possible, and after that - * all access to the camera will gracefully fail. These failures should - * prompt client to (eventually) close the video device, and then - in - * usbvideo_v4l_close() - we decrement uvd->uvd_used and usage counter. - * - * History: - * 22-Jan-2000 Added polling of MOD_IN_USE to delay removal until all users gone. - * 27-Jan-2000 Reworked to allow pending disconnects; see xxx_close() - * 24-May-2000 Corrected to prevent race condition (MOD_xxx_USE_COUNT). - * 19-Oct-2000 Moved to usbvideo module. - */ -static void usbvideo_Disconnect(struct usb_interface *intf) -{ - struct uvd *uvd = usb_get_intfdata (intf); - int i; - - if (uvd == NULL) { - err("%s($%p): Illegal call.", __func__, intf); - return; - } - - usb_set_intfdata (intf, NULL); - - usbvideo_ClientIncModCount(uvd); - if (uvd->debug > 0) - dev_info(&intf->dev, "%s(%p.)\n", __func__, intf); - - mutex_lock(&uvd->lock); - uvd->remove_pending = 1; /* Now all ISO data will be ignored */ - - /* At this time we ask to cancel outstanding URBs */ - GET_CALLBACK(uvd, stopDataPump)(uvd); - - for (i=0; i < USBVIDEO_NUMSBUF; i++) - usb_free_urb(uvd->sbuf[i].urb); - - usb_put_dev(uvd->dev); - uvd->dev = NULL; /* USB device is no more */ - - video_unregister_device(&uvd->vdev); - if (uvd->debug > 0) - dev_info(&intf->dev, "%s: Video unregistered.\n", __func__); - - if (uvd->user) - dev_info(&intf->dev, "%s: In use, disconnect pending.\n", - __func__); - else - usbvideo_CameraRelease(uvd); - mutex_unlock(&uvd->lock); - dev_info(&intf->dev, "USB camera disconnected.\n"); - - usbvideo_ClientDecModCount(uvd); -} - -/* - * usbvideo_CameraRelease() - * - * This code does final release of uvd. This happens - * after the device is disconnected -and- all clients - * closed their files. - * - * History: - * 27-Jan-2000 Created. - */ -static void usbvideo_CameraRelease(struct uvd *uvd) -{ - if (uvd == NULL) { - err("%s: Illegal call", __func__); - return; - } - - RingQueue_Free(&uvd->dp); - if (VALID_CALLBACK(uvd, userFree)) - GET_CALLBACK(uvd, userFree)(uvd); - uvd->uvd_used = 0; /* This is atomic, no need to take mutex */ -} - -/* - * usbvideo_find_struct() - * - * This code searches the array of preallocated (static) structures - * and returns index of the first one that isn't in use. Returns -1 - * if there are no free structures. - * - * History: - * 27-Jan-2000 Created. - */ -static int usbvideo_find_struct(struct usbvideo *cams) -{ - int u, rv = -1; - - if (cams == NULL) { - err("No usbvideo handle?"); - return -1; - } - mutex_lock(&cams->lock); - for (u = 0; u < cams->num_cameras; u++) { - struct uvd *uvd = &cams->cam[u]; - if (!uvd->uvd_used) /* This one is free */ - { - uvd->uvd_used = 1; /* In use now */ - mutex_init(&uvd->lock); /* to 1 == available */ - uvd->dev = NULL; - rv = u; - break; - } - } - mutex_unlock(&cams->lock); - return rv; -} - -static const struct v4l2_file_operations usbvideo_fops = { - .owner = THIS_MODULE, - .open = usbvideo_v4l_open, - .release =usbvideo_v4l_close, - .read = usbvideo_v4l_read, - .mmap = usbvideo_v4l_mmap, - .ioctl = usbvideo_v4l_ioctl, -}; -static const struct video_device usbvideo_template = { - .fops = &usbvideo_fops, -}; - -struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams) -{ - int i, devnum; - struct uvd *uvd = NULL; - - if (cams == NULL) { - err("No usbvideo handle?"); - return NULL; - } - - devnum = usbvideo_find_struct(cams); - if (devnum == -1) { - err("IBM USB camera driver: Too many devices!"); - return NULL; - } - uvd = &cams->cam[devnum]; - dbg("Device entry #%d. at $%p", devnum, uvd); - - /* Not relying upon caller we increase module counter ourselves */ - usbvideo_ClientIncModCount(uvd); - - mutex_lock(&uvd->lock); - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - uvd->sbuf[i].urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL); - if (uvd->sbuf[i].urb == NULL) { - err("usb_alloc_urb(%d.) failed.", FRAMES_PER_DESC); - uvd->uvd_used = 0; - uvd = NULL; - goto allocate_done; - } - } - uvd->user=0; - uvd->remove_pending = 0; - uvd->last_error = 0; - RingQueue_Initialize(&uvd->dp); - - /* Initialize video device structure */ - uvd->vdev = usbvideo_template; - sprintf(uvd->vdev.name, "%.20s USB Camera", cams->drvName); - /* - * The client is free to overwrite those because we - * return control to the client's probe function right now. - */ -allocate_done: - mutex_unlock(&uvd->lock); - usbvideo_ClientDecModCount(uvd); - return uvd; -} - -EXPORT_SYMBOL(usbvideo_AllocateDevice); - -int usbvideo_RegisterVideoDevice(struct uvd *uvd) -{ - char tmp1[20], tmp2[20]; /* Buffers for printing */ - - if (uvd == NULL) { - err("%s: Illegal call.", __func__); - return -EINVAL; - } - if (uvd->video_endp == 0) { - dev_info(&uvd->dev->dev, - "%s: No video endpoint specified; data pump disabled.\n", - __func__); - } - if (uvd->paletteBits == 0) { - err("%s: No palettes specified!", __func__); - return -EINVAL; - } - if (uvd->defaultPalette == 0) { - dev_info(&uvd->dev->dev, "%s: No default palette!\n", - __func__); - } - - uvd->max_frame_size = VIDEOSIZE_X(uvd->canvas) * - VIDEOSIZE_Y(uvd->canvas) * V4L_BYTES_PER_PIXEL; - usbvideo_VideosizeToString(tmp1, sizeof(tmp1), uvd->videosize); - usbvideo_VideosizeToString(tmp2, sizeof(tmp2), uvd->canvas); - - if (uvd->debug > 0) { - dev_info(&uvd->dev->dev, - "%s: iface=%d. endpoint=$%02x paletteBits=$%08lx\n", - __func__, uvd->iface, uvd->video_endp, - uvd->paletteBits); - } - if (uvd->dev == NULL) { - err("%s: uvd->dev == NULL", __func__); - return -EINVAL; - } - uvd->vdev.parent = &uvd->dev->dev; - uvd->vdev.release = video_device_release_empty; - if (video_register_device(&uvd->vdev, VFL_TYPE_GRABBER, video_nr) < 0) { - err("%s: video_register_device failed", __func__); - return -EPIPE; - } - if (uvd->debug > 1) { - dev_info(&uvd->dev->dev, - "%s: video_register_device() successful\n", __func__); - } - - dev_info(&uvd->dev->dev, "%s on %s: canvas=%s videosize=%s\n", - (uvd->handle != NULL) ? uvd->handle->drvName : "???", - video_device_node_name(&uvd->vdev), tmp2, tmp1); - - usb_get_dev(uvd->dev); - return 0; -} - -EXPORT_SYMBOL(usbvideo_RegisterVideoDevice); - -/* ******************************************************************** */ - -static int usbvideo_v4l_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct uvd *uvd = file->private_data; - unsigned long start = vma->vm_start; - unsigned long size = vma->vm_end-vma->vm_start; - unsigned long page, pos; - - if (!CAMERA_IS_OPERATIONAL(uvd)) - return -EFAULT; - - if (size > (((USBVIDEO_NUMFRAMES * uvd->max_frame_size) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) - return -EINVAL; - - pos = (unsigned long) uvd->fbuf; - while (size > 0) { - page = vmalloc_to_pfn((void *)pos); - if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) - return -EAGAIN; - - start += PAGE_SIZE; - pos += PAGE_SIZE; - if (size > PAGE_SIZE) - size -= PAGE_SIZE; - else - size = 0; - } - - return 0; -} - -/* - * usbvideo_v4l_open() - * - * This is part of Video 4 Linux API. The driver can be opened by one - * client only (checks internal counter 'uvdser'). The procedure - * then allocates buffers needed for video processing. - * - * History: - * 22-Jan-2000 Rewrote, moved scratch buffer allocation here. Now the - * camera is also initialized here (once per connect), at - * expense of V4L client (it waits on open() call). - * 27-Jan-2000 Used USBVIDEO_NUMSBUF as number of URB buffers. - * 24-May-2000 Corrected to prevent race condition (MOD_xxx_USE_COUNT). - */ -static int usbvideo_v4l_open(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct uvd *uvd = (struct uvd *) dev; - const int sb_size = FRAMES_PER_DESC * uvd->iso_packet_len; - int i, errCode = 0; - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s($%p)\n", __func__, dev); - - if (usbvideo_ClientIncModCount(uvd) < 0) - return -ENODEV; - mutex_lock(&uvd->lock); - - if (uvd->user) { - err("%s: Someone tried to open an already opened device!", __func__); - errCode = -EBUSY; - } else { - /* Clear statistics */ - memset(&uvd->stats, 0, sizeof(uvd->stats)); - - /* Clean pointers so we know if we allocated something */ - for (i=0; i < USBVIDEO_NUMSBUF; i++) - uvd->sbuf[i].data = NULL; - - /* Allocate memory for the frame buffers */ - uvd->fbuf_size = USBVIDEO_NUMFRAMES * uvd->max_frame_size; - uvd->fbuf = usbvideo_rvmalloc(uvd->fbuf_size); - RingQueue_Allocate(&uvd->dp, RING_QUEUE_SIZE); - if ((uvd->fbuf == NULL) || - (!RingQueue_IsAllocated(&uvd->dp))) { - err("%s: Failed to allocate fbuf or dp", __func__); - errCode = -ENOMEM; - } else { - /* Allocate all buffers */ - for (i=0; i < USBVIDEO_NUMFRAMES; i++) { - uvd->frame[i].frameState = FrameState_Unused; - uvd->frame[i].data = uvd->fbuf + i*(uvd->max_frame_size); - /* - * Set default sizes in case IOCTL (VIDIOCMCAPTURE) - * is not used (using read() instead). - */ - uvd->frame[i].canvas = uvd->canvas; - uvd->frame[i].seqRead_Index = 0; - } - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - uvd->sbuf[i].data = kmalloc(sb_size, GFP_KERNEL); - if (uvd->sbuf[i].data == NULL) { - errCode = -ENOMEM; - break; - } - } - } - if (errCode != 0) { - /* Have to free all that memory */ - if (uvd->fbuf != NULL) { - usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size); - uvd->fbuf = NULL; - } - RingQueue_Free(&uvd->dp); - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - kfree(uvd->sbuf[i].data); - uvd->sbuf[i].data = NULL; - } - } - } - - /* If so far no errors then we shall start the camera */ - if (errCode == 0) { - /* Start data pump if we have valid endpoint */ - if (uvd->video_endp != 0) - errCode = GET_CALLBACK(uvd, startDataPump)(uvd); - if (errCode == 0) { - if (VALID_CALLBACK(uvd, setupOnOpen)) { - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, - "%s: setupOnOpen callback\n", - __func__); - errCode = GET_CALLBACK(uvd, setupOnOpen)(uvd); - if (errCode < 0) { - err("%s: setupOnOpen callback failed (%d.).", - __func__, errCode); - } else if (uvd->debug > 1) { - dev_info(&uvd->dev->dev, - "%s: setupOnOpen callback successful\n", - __func__); - } - } - if (errCode == 0) { - uvd->settingsAdjusted = 0; - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, - "%s: Open succeeded.\n", - __func__); - uvd->user++; - file->private_data = uvd; - } - } - } - mutex_unlock(&uvd->lock); - if (errCode != 0) - usbvideo_ClientDecModCount(uvd); - if (uvd->debug > 0) - dev_info(&uvd->dev->dev, "%s: Returning %d.\n", __func__, - errCode); - return errCode; -} - -/* - * usbvideo_v4l_close() - * - * This is part of Video 4 Linux API. The procedure - * stops streaming and deallocates all buffers that were earlier - * allocated in usbvideo_v4l_open(). - * - * History: - * 22-Jan-2000 Moved scratch buffer deallocation here. - * 27-Jan-2000 Used USBVIDEO_NUMSBUF as number of URB buffers. - * 24-May-2000 Moved MOD_DEC_USE_COUNT outside of code that can sleep. - */ -static int usbvideo_v4l_close(struct file *file) -{ - struct video_device *dev = file->private_data; - struct uvd *uvd = (struct uvd *) dev; - int i; - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s($%p)\n", __func__, dev); - - mutex_lock(&uvd->lock); - GET_CALLBACK(uvd, stopDataPump)(uvd); - usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size); - uvd->fbuf = NULL; - RingQueue_Free(&uvd->dp); - - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - kfree(uvd->sbuf[i].data); - uvd->sbuf[i].data = NULL; - } - -#if USBVIDEO_REPORT_STATS - usbvideo_ReportStatistics(uvd); -#endif - - uvd->user--; - if (uvd->remove_pending) { - if (uvd->debug > 0) - dev_info(&uvd->dev->dev, "%s: Final disconnect.\n", - __func__); - usbvideo_CameraRelease(uvd); - } - mutex_unlock(&uvd->lock); - usbvideo_ClientDecModCount(uvd); - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s: Completed.\n", __func__); - file->private_data = NULL; - return 0; -} - -/* - * usbvideo_v4l_ioctl() - * - * This is part of Video 4 Linux API. The procedure handles ioctl() calls. - * - * History: - * 22-Jan-2000 Corrected VIDIOCSPICT to reject unsupported settings. - */ -static long usbvideo_v4l_do_ioctl(struct file *file, unsigned int cmd, void *arg) -{ - struct uvd *uvd = file->private_data; - - if (!CAMERA_IS_OPERATIONAL(uvd)) - return -EIO; - - switch (cmd) { - case VIDIOCGCAP: - { - struct video_capability *b = arg; - *b = uvd->vcap; - return 0; - } - case VIDIOCGCHAN: - { - struct video_channel *v = arg; - *v = uvd->vchan; - return 0; - } - case VIDIOCSCHAN: - { - struct video_channel *v = arg; - if (v->channel != 0) - return -EINVAL; - return 0; - } - case VIDIOCGPICT: - { - struct video_picture *pic = arg; - *pic = uvd->vpic; - return 0; - } - case VIDIOCSPICT: - { - struct video_picture *pic = arg; - /* - * Use temporary 'video_picture' structure to preserve our - * own settings (such as color depth, palette) that we - * aren't allowing everyone (V4L client) to change. - */ - uvd->vpic.brightness = pic->brightness; - uvd->vpic.hue = pic->hue; - uvd->vpic.colour = pic->colour; - uvd->vpic.contrast = pic->contrast; - uvd->settingsAdjusted = 0; /* Will force new settings */ - return 0; - } - case VIDIOCSWIN: - { - struct video_window *vw = arg; - - if(VALID_CALLBACK(uvd, setVideoMode)) { - return GET_CALLBACK(uvd, setVideoMode)(uvd, vw); - } - - if (vw->flags) - return -EINVAL; - if (vw->clipcount) - return -EINVAL; - if (vw->width != VIDEOSIZE_X(uvd->canvas)) - return -EINVAL; - if (vw->height != VIDEOSIZE_Y(uvd->canvas)) - return -EINVAL; - - return 0; - } - case VIDIOCGWIN: - { - struct video_window *vw = arg; - - vw->x = 0; - vw->y = 0; - vw->width = VIDEOSIZE_X(uvd->videosize); - vw->height = VIDEOSIZE_Y(uvd->videosize); - vw->chromakey = 0; - if (VALID_CALLBACK(uvd, getFPS)) - vw->flags = GET_CALLBACK(uvd, getFPS)(uvd); - else - vw->flags = 10; /* FIXME: do better! */ - return 0; - } - case VIDIOCGMBUF: - { - struct video_mbuf *vm = arg; - int i; - - memset(vm, 0, sizeof(*vm)); - vm->size = uvd->max_frame_size * USBVIDEO_NUMFRAMES; - vm->frames = USBVIDEO_NUMFRAMES; - for(i = 0; i < USBVIDEO_NUMFRAMES; i++) - vm->offsets[i] = i * uvd->max_frame_size; - - return 0; - } - case VIDIOCMCAPTURE: - { - struct video_mmap *vm = arg; - - if (uvd->debug >= 1) { - dev_info(&uvd->dev->dev, - "VIDIOCMCAPTURE: frame=%d. size=%dx%d, format=%d.\n", - vm->frame, vm->width, vm->height, vm->format); - } - /* - * Check if the requested size is supported. If the requestor - * requests too big a frame then we may be tricked into accessing - * outside of own preallocated frame buffer (in uvd->frame). - * This will cause oops or a security hole. Theoretically, we - * could only clamp the size down to acceptable bounds, but then - * we'd need to figure out how to insert our smaller buffer into - * larger caller's buffer... this is not an easy question. So we - * here just flatly reject too large requests, assuming that the - * caller will resubmit with smaller size. Callers should know - * what size we support (returned by VIDIOCGCAP). However vidcat, - * for one, does not care and allows to ask for any size. - */ - if ((vm->width > VIDEOSIZE_X(uvd->canvas)) || - (vm->height > VIDEOSIZE_Y(uvd->canvas))) { - if (uvd->debug > 0) { - dev_info(&uvd->dev->dev, - "VIDIOCMCAPTURE: Size=%dx%d " - "too large; allowed only up " - "to %ldx%ld\n", vm->width, - vm->height, - VIDEOSIZE_X(uvd->canvas), - VIDEOSIZE_Y(uvd->canvas)); - } - return -EINVAL; - } - /* Check if the palette is supported */ - if (((1L << vm->format) & uvd->paletteBits) == 0) { - if (uvd->debug > 0) { - dev_info(&uvd->dev->dev, - "VIDIOCMCAPTURE: format=%d. " - "not supported " - "(paletteBits=$%08lx)\n", - vm->format, uvd->paletteBits); - } - return -EINVAL; - } - if ((vm->frame < 0) || (vm->frame >= USBVIDEO_NUMFRAMES)) { - err("VIDIOCMCAPTURE: vm.frame=%d. !E [0-%d]", vm->frame, USBVIDEO_NUMFRAMES-1); - return -EINVAL; - } - if (uvd->frame[vm->frame].frameState == FrameState_Grabbing) { - /* Not an error - can happen */ - } - uvd->frame[vm->frame].request = VIDEOSIZE(vm->width, vm->height); - uvd->frame[vm->frame].palette = vm->format; - - /* Mark it as ready */ - uvd->frame[vm->frame].frameState = FrameState_Ready; - - return usbvideo_NewFrame(uvd, vm->frame); - } - case VIDIOCSYNC: - { - int *frameNum = arg; - int ret; - - if (*frameNum < 0 || *frameNum >= USBVIDEO_NUMFRAMES) - return -EINVAL; - - if (uvd->debug >= 1) - dev_info(&uvd->dev->dev, - "VIDIOCSYNC: syncing to frame %d.\n", - *frameNum); - if (uvd->flags & FLAGS_NO_DECODING) - ret = usbvideo_GetFrame(uvd, *frameNum); - else if (VALID_CALLBACK(uvd, getFrame)) { - ret = GET_CALLBACK(uvd, getFrame)(uvd, *frameNum); - if ((ret < 0) && (uvd->debug >= 1)) { - err("VIDIOCSYNC: getFrame() returned %d.", ret); - } - } else { - err("VIDIOCSYNC: getFrame is not set"); - ret = -EFAULT; - } - - /* - * The frame is in FrameState_Done_Hold state. Release it - * right now because its data is already mapped into - * the user space and it's up to the application to - * make use of it until it asks for another frame. - */ - uvd->frame[*frameNum].frameState = FrameState_Unused; - return ret; - } - case VIDIOCGFBUF: - { - struct video_buffer *vb = arg; - - memset(vb, 0, sizeof(*vb)); - return 0; - } - case VIDIOCKEY: - return 0; - - case VIDIOCCAPTURE: - return -EINVAL; - - case VIDIOCSFBUF: - - case VIDIOCGTUNER: - case VIDIOCSTUNER: - - case VIDIOCGFREQ: - case VIDIOCSFREQ: - - case VIDIOCGAUDIO: - case VIDIOCSAUDIO: - return -EINVAL; - - default: - return -ENOIOCTLCMD; - } - return 0; -} - -static long usbvideo_v4l_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) -{ - return video_usercopy(file, cmd, arg, usbvideo_v4l_do_ioctl); -} - -/* - * usbvideo_v4l_read() - * - * This is mostly boring stuff. We simply ask for a frame and when it - * arrives copy all the video data from it into user space. There is - * no obvious need to override this method. - * - * History: - * 20-Oct-2000 Created. - * 01-Nov-2000 Added mutex (uvd->lock). - */ -static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct uvd *uvd = file->private_data; - int noblock = file->f_flags & O_NONBLOCK; - int frmx = -1, i; - struct usbvideo_frame *frame; - - if (!CAMERA_IS_OPERATIONAL(uvd) || (buf == NULL)) - return -EFAULT; - - if (uvd->debug >= 1) - dev_info(&uvd->dev->dev, - "%s: %Zd. bytes, noblock=%d.\n", - __func__, count, noblock); - - mutex_lock(&uvd->lock); - - /* See if a frame is completed, then use it. */ - for(i = 0; i < USBVIDEO_NUMFRAMES; i++) { - if ((uvd->frame[i].frameState == FrameState_Done) || - (uvd->frame[i].frameState == FrameState_Done_Hold) || - (uvd->frame[i].frameState == FrameState_Error)) { - frmx = i; - break; - } - } - - /* FIXME: If we don't start a frame here then who ever does? */ - if (noblock && (frmx == -1)) { - count = -EAGAIN; - goto read_done; - } - - /* - * If no FrameState_Done, look for a FrameState_Grabbing state. - * See if a frame is in process (grabbing), then use it. - * We will need to wait until it becomes cooked, of course. - */ - if (frmx == -1) { - for(i = 0; i < USBVIDEO_NUMFRAMES; i++) { - if (uvd->frame[i].frameState == FrameState_Grabbing) { - frmx = i; - break; - } - } - } - - /* - * If no frame is active, start one. We don't care which one - * it will be, so #0 is as good as any. - * In read access mode we don't have convenience of VIDIOCMCAPTURE - * to specify the requested palette (video format) on per-frame - * basis. This means that we have to return data in -some- format - * and just hope that the client knows what to do with it. - * The default format is configured in uvd->defaultPalette field - * as one of VIDEO_PALETTE_xxx values. We stuff it into the new - * frame and initiate the frame filling process. - */ - if (frmx == -1) { - if (uvd->defaultPalette == 0) { - err("%s: No default palette; don't know what to do!", __func__); - count = -EFAULT; - goto read_done; - } - frmx = 0; - /* - * We have no per-frame control over video size. - * Therefore we only can use whatever size was - * specified as default. - */ - uvd->frame[frmx].request = uvd->videosize; - uvd->frame[frmx].palette = uvd->defaultPalette; - uvd->frame[frmx].frameState = FrameState_Ready; - usbvideo_NewFrame(uvd, frmx); - /* Now frame 0 is supposed to start filling... */ - } - - /* - * Get a pointer to the active frame. It is either previously - * completed frame or frame in progress but not completed yet. - */ - frame = &uvd->frame[frmx]; - - /* - * Sit back & wait until the frame gets filled and postprocessed. - * If we fail to get the picture [in time] then return the error. - * In this call we specify that we want the frame to be waited for, - * postprocessed and switched into FrameState_Done_Hold state. This - * state is used to hold the frame as "fully completed" between - * subsequent partial reads of the same frame. - */ - if (frame->frameState != FrameState_Done_Hold) { - long rv = -EFAULT; - if (uvd->flags & FLAGS_NO_DECODING) - rv = usbvideo_GetFrame(uvd, frmx); - else if (VALID_CALLBACK(uvd, getFrame)) - rv = GET_CALLBACK(uvd, getFrame)(uvd, frmx); - else - err("getFrame is not set"); - if ((rv != 0) || (frame->frameState != FrameState_Done_Hold)) { - count = rv; - goto read_done; - } - } - - /* - * Copy bytes to user space. We allow for partial reads, which - * means that the user application can request read less than - * the full frame size. It is up to the application to issue - * subsequent calls until entire frame is read. - * - * First things first, make sure we don't copy more than we - * have - even if the application wants more. That would be - * a big security embarassment! - */ - if ((count + frame->seqRead_Index) > frame->seqRead_Length) - count = frame->seqRead_Length - frame->seqRead_Index; - - /* - * Copy requested amount of data to user space. We start - * copying from the position where we last left it, which - * will be zero for a new frame (not read before). - */ - if (copy_to_user(buf, frame->data + frame->seqRead_Index, count)) { - count = -EFAULT; - goto read_done; - } - - /* Update last read position */ - frame->seqRead_Index += count; - if (uvd->debug >= 1) { - err("%s: {copy} count used=%Zd, new seqRead_Index=%ld", - __func__, count, frame->seqRead_Index); - } - - /* Finally check if the frame is done with and "release" it */ - if (frame->seqRead_Index >= frame->seqRead_Length) { - /* All data has been read */ - frame->seqRead_Index = 0; - - /* Mark it as available to be used again. */ - uvd->frame[frmx].frameState = FrameState_Unused; - if (usbvideo_NewFrame(uvd, (frmx + 1) % USBVIDEO_NUMFRAMES)) { - err("%s: usbvideo_NewFrame failed.", __func__); - } - } -read_done: - mutex_unlock(&uvd->lock); - return count; -} - -/* - * Make all of the blocks of data contiguous - */ -static int usbvideo_CompressIsochronous(struct uvd *uvd, struct urb *urb) -{ - char *cdata; - int i, totlen = 0; - - for (i = 0; i < urb->number_of_packets; i++) { - int n = urb->iso_frame_desc[i].actual_length; - int st = urb->iso_frame_desc[i].status; - - cdata = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - - /* Detect and ignore errored packets */ - if (st < 0) { - if (uvd->debug >= 1) - err("Data error: packet=%d. len=%d. status=%d.", i, n, st); - uvd->stats.iso_err_count++; - continue; - } - - /* Detect and ignore empty packets */ - if (n <= 0) { - uvd->stats.iso_skip_count++; - continue; - } - totlen += n; /* Little local accounting */ - RingQueue_Enqueue(&uvd->dp, cdata, n); - } - return totlen; -} - -static void usbvideo_IsocIrq(struct urb *urb) -{ - int i, ret, len; - struct uvd *uvd = urb->context; - - /* We don't want to do anything if we are about to be removed! */ - if (!CAMERA_IS_OPERATIONAL(uvd)) - return; -#if 0 - if (urb->actual_length > 0) { - dev_info(&uvd->dev->dev, - "urb=$%p status=%d. errcount=%d. length=%d.\n", - urb, urb->status, urb->error_count, - urb->actual_length); - } else { - static int c = 0; - if (c++ % 100 == 0) - dev_info(&uvd->dev->dev, "No Isoc data\n"); - } -#endif - - if (!uvd->streaming) { - if (uvd->debug >= 1) - dev_info(&uvd->dev->dev, - "Not streaming, but interrupt!\n"); - return; - } - - uvd->stats.urb_count++; - if (urb->actual_length <= 0) - goto urb_done_with; - - /* Copy the data received into ring queue */ - len = usbvideo_CompressIsochronous(uvd, urb); - uvd->stats.urb_length = len; - if (len <= 0) - goto urb_done_with; - - /* Here we got some data */ - uvd->stats.data_count += len; - RingQueue_WakeUpInterruptible(&uvd->dp); - -urb_done_with: - for (i = 0; i < FRAMES_PER_DESC; i++) { - urb->iso_frame_desc[i].status = 0; - urb->iso_frame_desc[i].actual_length = 0; - } - urb->status = 0; - urb->dev = uvd->dev; - ret = usb_submit_urb (urb, GFP_KERNEL); - if(ret) - err("usb_submit_urb error (%d)", ret); - return; -} - -/* - * usbvideo_StartDataPump() - * - * History: - * 27-Jan-2000 Used ibmcam->iface, ibmcam->ifaceAltActive instead - * of hardcoded values. Simplified by using for loop, - * allowed any number of URBs. - */ -static int usbvideo_StartDataPump(struct uvd *uvd) -{ - struct usb_device *dev = uvd->dev; - int i, errFlag; - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s($%p)\n", __func__, uvd); - - if (!CAMERA_IS_OPERATIONAL(uvd)) { - err("%s: Camera is not operational", __func__); - return -EFAULT; - } - uvd->curframe = -1; - - /* Alternate interface 1 is is the biggest frame size */ - i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive); - if (i < 0) { - err("%s: usb_set_interface error", __func__); - uvd->last_error = i; - return -EBUSY; - } - if (VALID_CALLBACK(uvd, videoStart)) - GET_CALLBACK(uvd, videoStart)(uvd); - else - err("%s: videoStart not set", __func__); - - /* We double buffer the Iso lists */ - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - int j, k; - struct urb *urb = uvd->sbuf[i].urb; - urb->dev = dev; - urb->context = uvd; - urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp); - urb->interval = 1; - urb->transfer_flags = URB_ISO_ASAP; - urb->transfer_buffer = uvd->sbuf[i].data; - urb->complete = usbvideo_IsocIrq; - urb->number_of_packets = FRAMES_PER_DESC; - urb->transfer_buffer_length = uvd->iso_packet_len * FRAMES_PER_DESC; - for (j=k=0; j < FRAMES_PER_DESC; j++, k += uvd->iso_packet_len) { - urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length = uvd->iso_packet_len; - } - } - - /* Submit all URBs */ - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL); - if (errFlag) - err("%s: usb_submit_isoc(%d) ret %d", __func__, i, errFlag); - } - - uvd->streaming = 1; - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, - "%s: streaming=1 video_endp=$%02x\n", __func__, - uvd->video_endp); - return 0; -} - -/* - * usbvideo_StopDataPump() - * - * This procedure stops streaming and deallocates URBs. Then it - * activates zero-bandwidth alt. setting of the video interface. - * - * History: - * 22-Jan-2000 Corrected order of actions to work after surprise removal. - * 27-Jan-2000 Used uvd->iface, uvd->ifaceAltInactive instead of hardcoded values. - */ -static void usbvideo_StopDataPump(struct uvd *uvd) -{ - int i, j; - - if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL)) - return; - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s($%p)\n", __func__, uvd); - - /* Unschedule all of the iso td's */ - for (i=0; i < USBVIDEO_NUMSBUF; i++) { - usb_kill_urb(uvd->sbuf[i].urb); - } - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "%s: streaming=0\n", __func__); - uvd->streaming = 0; - - if (!uvd->remove_pending) { - /* Invoke minidriver's magic to stop the camera */ - if (VALID_CALLBACK(uvd, videoStop)) - GET_CALLBACK(uvd, videoStop)(uvd); - else - err("%s: videoStop not set", __func__); - - /* Set packet size to 0 */ - j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive); - if (j < 0) { - err("%s: usb_set_interface() error %d.", __func__, j); - uvd->last_error = j; - } - } -} - -/* - * usbvideo_NewFrame() - * - * History: - * 29-Mar-00 Added copying of previous frame into the current one. - * 6-Aug-00 Added model 3 video sizes, removed redundant width, height. - */ -static int usbvideo_NewFrame(struct uvd *uvd, int framenum) -{ - struct usbvideo_frame *frame; - int n; - - if (uvd->debug > 1) - dev_info(&uvd->dev->dev, "usbvideo_NewFrame($%p,%d.)\n", uvd, - framenum); - - /* If we're not grabbing a frame right now and the other frame is */ - /* ready to be grabbed into, then use it instead */ - if (uvd->curframe != -1) - return 0; - - /* If necessary we adjust picture settings between frames */ - if (!uvd->settingsAdjusted) { - if (VALID_CALLBACK(uvd, adjustPicture)) - GET_CALLBACK(uvd, adjustPicture)(uvd); - uvd->settingsAdjusted = 1; - } - - n = (framenum + 1) % USBVIDEO_NUMFRAMES; - if (uvd->frame[n].frameState == FrameState_Ready) - framenum = n; - - frame = &uvd->frame[framenum]; - - frame->frameState = FrameState_Grabbing; - frame->scanstate = ScanState_Scanning; - frame->seqRead_Length = 0; /* Accumulated in xxx_parse_data() */ - frame->deinterlace = Deinterlace_None; - frame->flags = 0; /* No flags yet, up to minidriver (or us) to set them */ - uvd->curframe = framenum; - - /* - * Normally we would want to copy previous frame into the current one - * before we even start filling it with data; this allows us to stop - * filling at any moment; top portion of the frame will be new and - * bottom portion will stay as it was in previous frame. If we don't - * do that then missing chunks of video stream will result in flickering - * portions of old data whatever it was before. - * - * If we choose not to copy previous frame (to, for example, save few - * bus cycles - the frame can be pretty large!) then we have an option - * to clear the frame before using. If we experience losses in this - * mode then missing picture will be black (no flickering). - * - * Finally, if user chooses not to clean the current frame before - * filling it with data then the old data will be visible if we fail - * to refill entire frame with new data. - */ - if (!(uvd->flags & FLAGS_SEPARATE_FRAMES)) { - /* This copies previous frame into this one to mask losses */ - int prev = (framenum - 1 + USBVIDEO_NUMFRAMES) % USBVIDEO_NUMFRAMES; - memmove(frame->data, uvd->frame[prev].data, uvd->max_frame_size); - } else { - if (uvd->flags & FLAGS_CLEAN_FRAMES) { - /* This provides a "clean" frame but slows things down */ - memset(frame->data, 0, uvd->max_frame_size); - } - } - return 0; -} - -/* - * usbvideo_CollectRawData() - * - * This procedure can be used instead of 'processData' callback if you - * only want to dump the raw data from the camera into the output - * device (frame buffer). You can look at it with V4L client, but the - * image will be unwatchable. The main purpose of this code and of the - * mode FLAGS_NO_DECODING is debugging and capturing of datastreams from - * new, unknown cameras. This procedure will be automatically invoked - * instead of the specified callback handler when uvd->flags has bit - * FLAGS_NO_DECODING set. Therefore, any regular build of any driver - * based on usbvideo can use this feature at any time. - */ -static void usbvideo_CollectRawData(struct uvd *uvd, struct usbvideo_frame *frame) -{ - int n; - - assert(uvd != NULL); - assert(frame != NULL); - - /* Try to move data from queue into frame buffer */ - n = RingQueue_GetLength(&uvd->dp); - if (n > 0) { - int m; - /* See how much space we have left */ - m = uvd->max_frame_size - frame->seqRead_Length; - if (n > m) - n = m; - /* Now move that much data into frame buffer */ - RingQueue_Dequeue( - &uvd->dp, - frame->data + frame->seqRead_Length, - m); - frame->seqRead_Length += m; - } - /* See if we filled the frame */ - if (frame->seqRead_Length >= uvd->max_frame_size) { - frame->frameState = FrameState_Done; - uvd->curframe = -1; - uvd->stats.frame_num++; - } -} - -static int usbvideo_GetFrame(struct uvd *uvd, int frameNum) -{ - struct usbvideo_frame *frame = &uvd->frame[frameNum]; - - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, "%s($%p,%d.)\n", __func__, uvd, - frameNum); - - switch (frame->frameState) { - case FrameState_Unused: - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, "%s: FrameState_Unused\n", - __func__); - return -EINVAL; - case FrameState_Ready: - case FrameState_Grabbing: - case FrameState_Error: - { - int ntries, signalPending; - redo: - if (!CAMERA_IS_OPERATIONAL(uvd)) { - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Camera is not operational (1)\n", - __func__); - return -EIO; - } - ntries = 0; - do { - RingQueue_InterruptibleSleepOn(&uvd->dp); - signalPending = signal_pending(current); - if (!CAMERA_IS_OPERATIONAL(uvd)) { - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Camera is not " - "operational (2)\n", __func__); - return -EIO; - } - assert(uvd->fbuf != NULL); - if (signalPending) { - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Signal=$%08x\n", __func__, - signalPending); - if (uvd->flags & FLAGS_RETRY_VIDIOCSYNC) { - usbvideo_TestPattern(uvd, 1, 0); - uvd->curframe = -1; - uvd->stats.frame_num++; - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Forced test " - "pattern screen\n", - __func__); - return 0; - } else { - /* Standard answer: Interrupted! */ - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Interrupted!\n", - __func__); - return -EINTR; - } - } else { - /* No signals - we just got new data in dp queue */ - if (uvd->flags & FLAGS_NO_DECODING) - usbvideo_CollectRawData(uvd, frame); - else if (VALID_CALLBACK(uvd, processData)) - GET_CALLBACK(uvd, processData)(uvd, frame); - else - err("%s: processData not set", __func__); - } - } while (frame->frameState == FrameState_Grabbing); - if (uvd->debug >= 2) { - dev_info(&uvd->dev->dev, - "%s: Grabbing done; state=%d. (%lu. bytes)\n", - __func__, frame->frameState, - frame->seqRead_Length); - } - if (frame->frameState == FrameState_Error) { - int ret = usbvideo_NewFrame(uvd, frameNum); - if (ret < 0) { - err("%s: usbvideo_NewFrame() failed (%d.)", __func__, ret); - return ret; - } - goto redo; - } - /* Note that we fall through to meet our destiny below */ - } - case FrameState_Done: - /* - * Do all necessary postprocessing of data prepared in - * "interrupt" code and the collecting code above. The - * frame gets marked as FrameState_Done by queue parsing code. - * This status means that we collected enough data and - * most likely processed it as we went through. However - * the data may need postprocessing, such as deinterlacing - * or picture adjustments implemented in software (horror!) - * - * As soon as the frame becomes "final" it gets promoted to - * FrameState_Done_Hold status where it will remain until the - * caller consumed all the video data from the frame. Then - * the empty shell of ex-frame is thrown out for dogs to eat. - * But we, worried about pets, will recycle the frame! - */ - uvd->stats.frame_num++; - if ((uvd->flags & FLAGS_NO_DECODING) == 0) { - if (VALID_CALLBACK(uvd, postProcess)) - GET_CALLBACK(uvd, postProcess)(uvd, frame); - if (frame->flags & USBVIDEO_FRAME_FLAG_SOFTWARE_CONTRAST) - usbvideo_SoftwareContrastAdjustment(uvd, frame); - } - frame->frameState = FrameState_Done_Hold; - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: Entered FrameState_Done_Hold state.\n", - __func__); - return 0; - - case FrameState_Done_Hold: - /* - * We stay in this state indefinitely until someone external, - * like ioctl() or read() call finishes digesting the frame - * data. Then it will mark the frame as FrameState_Unused and - * it will be released back into the wild to roam freely. - */ - if (uvd->debug >= 2) - dev_info(&uvd->dev->dev, - "%s: FrameState_Done_Hold state.\n", - __func__); - return 0; - } - - /* Catch-all for other cases. We shall not be here. */ - err("%s: Invalid state %d.", __func__, frame->frameState); - frame->frameState = FrameState_Unused; - return 0; -} - -/* - * usbvideo_DeinterlaceFrame() - * - * This procedure deinterlaces the given frame. Some cameras produce - * only half of scanlines - sometimes only even lines, sometimes only - * odd lines. The deinterlacing method is stored in frame->deinterlace - * variable. - * - * Here we scan the frame vertically and replace missing scanlines with - * average between surrounding ones - before and after. If we have no - * line above then we just copy next line. Similarly, if we need to - * create a last line then preceding line is used. - */ -void usbvideo_DeinterlaceFrame(struct uvd *uvd, struct usbvideo_frame *frame) -{ - if ((uvd == NULL) || (frame == NULL)) - return; - - if ((frame->deinterlace == Deinterlace_FillEvenLines) || - (frame->deinterlace == Deinterlace_FillOddLines)) - { - const int v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL; - int i = (frame->deinterlace == Deinterlace_FillEvenLines) ? 0 : 1; - - for (; i < VIDEOSIZE_Y(frame->request); i += 2) { - const unsigned char *fs1, *fs2; - unsigned char *fd; - int ip, in, j; /* Previous and next lines */ - - /* - * Need to average lines before and after 'i'. - * If we go out of bounds seeking those lines then - * we point back to existing line. - */ - ip = i - 1; /* First, get rough numbers */ - in = i + 1; - - /* Now validate */ - if (ip < 0) - ip = in; - if (in >= VIDEOSIZE_Y(frame->request)) - in = ip; - - /* Sanity check */ - if ((ip < 0) || (in < 0) || - (ip >= VIDEOSIZE_Y(frame->request)) || - (in >= VIDEOSIZE_Y(frame->request))) - { - err("Error: ip=%d. in=%d. req.height=%ld.", - ip, in, VIDEOSIZE_Y(frame->request)); - break; - } - - /* Now we need to average lines 'ip' and 'in' to produce line 'i' */ - fs1 = frame->data + (v4l_linesize * ip); - fs2 = frame->data + (v4l_linesize * in); - fd = frame->data + (v4l_linesize * i); - - /* Average lines around destination */ - for (j=0; j < v4l_linesize; j++) { - fd[j] = (unsigned char)((((unsigned) fs1[j]) + - ((unsigned)fs2[j])) >> 1); - } - } - } - - /* Optionally display statistics on the screen */ - if (uvd->flags & FLAGS_OVERLAY_STATS) - usbvideo_OverlayStats(uvd, frame); -} - -EXPORT_SYMBOL(usbvideo_DeinterlaceFrame); - -/* - * usbvideo_SoftwareContrastAdjustment() - * - * This code adjusts the contrast of the frame, assuming RGB24 format. - * As most software image processing, this job is CPU-intensive. - * Get a camera that supports hardware adjustment! - * - * History: - * 09-Feb-2001 Created. - */ -static void usbvideo_SoftwareContrastAdjustment(struct uvd *uvd, - struct usbvideo_frame *frame) -{ - int i, j, v4l_linesize; - signed long adj; - const int ccm = 128; /* Color correction median - see below */ - - if ((uvd == NULL) || (frame == NULL)) { - err("%s: Illegal call.", __func__); - return; - } - adj = (uvd->vpic.contrast - 0x8000) >> 8; /* -128..+127 = -ccm..+(ccm-1)*/ - RESTRICT_TO_RANGE(adj, -ccm, ccm+1); - if (adj == 0) { - /* In rare case of no adjustment */ - return; - } - v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL; - for (i=0; i < VIDEOSIZE_Y(frame->request); i++) { - unsigned char *fd = frame->data + (v4l_linesize * i); - for (j=0; j < v4l_linesize; j++) { - signed long v = (signed long) fd[j]; - /* Magnify up to 2 times, reduce down to zero */ - v = 128 + ((ccm + adj) * (v - 128)) / ccm; - RESTRICT_TO_RANGE(v, 0, 0xFF); /* Must flatten tails */ - fd[j] = (unsigned char) v; - } - } -} - -MODULE_LICENSE("GPL"); diff --git a/drivers/media/video/usbvideo/usbvideo.h b/drivers/media/video/usbvideo/usbvideo.h deleted file mode 100644 index c66985beb8c9..000000000000 --- a/drivers/media/video/usbvideo/usbvideo.h +++ /dev/null @@ -1,395 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#ifndef usbvideo_h -#define usbvideo_h - -#include <linux/videodev.h> -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> -#include <linux/usb.h> -#include <linux/mutex.h> - -/* Most helpful debugging aid */ -#define assert(expr) ((void) ((expr) ? 0 : (err("assert failed at line %d",__LINE__)))) - -#define USBVIDEO_REPORT_STATS 1 /* Set to 0 to block statistics on close */ - -/* Bit flags (options) */ -#define FLAGS_RETRY_VIDIOCSYNC (1 << 0) -#define FLAGS_MONOCHROME (1 << 1) -#define FLAGS_DISPLAY_HINTS (1 << 2) -#define FLAGS_OVERLAY_STATS (1 << 3) -#define FLAGS_FORCE_TESTPATTERN (1 << 4) -#define FLAGS_SEPARATE_FRAMES (1 << 5) -#define FLAGS_CLEAN_FRAMES (1 << 6) -#define FLAGS_NO_DECODING (1 << 7) - -/* Bit flags for frames (apply to the frame where they are specified) */ -#define USBVIDEO_FRAME_FLAG_SOFTWARE_CONTRAST (1 << 0) - -/* Camera capabilities (maximum) */ -#define CAMERA_URB_FRAMES 32 -#define CAMERA_MAX_ISO_PACKET 1023 /* 1022 actually sent by camera */ -#define FRAMES_PER_DESC (CAMERA_URB_FRAMES) -#define FRAME_SIZE_PER_DESC (CAMERA_MAX_ISO_PACKET) - -/* This macro restricts an int variable to an inclusive range */ -#define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); } - -#define V4L_BYTES_PER_PIXEL 3 /* Because we produce RGB24 */ - -/* - * Use this macro to construct constants for different video sizes. - * We have to deal with different video sizes that have to be - * configured in the device or compared against when we receive - * a data. Normally one would define a bunch of VIDEOSIZE_x_by_y - * #defines and that's the end of story. However this solution - * does not allow to convert between real pixel sizes and the - * constant (integer) value that may be used to tag a frame or - * whatever. The set of macros below constructs videosize constants - * from the pixel size and allows to reconstruct the pixel size - * from the combined value later. - */ -#define VIDEOSIZE(x,y) (((x) & 0xFFFFL) | (((y) & 0xFFFFL) << 16)) -#define VIDEOSIZE_X(vs) ((vs) & 0xFFFFL) -#define VIDEOSIZE_Y(vs) (((vs) >> 16) & 0xFFFFL) -typedef unsigned long videosize_t; - -/* - * This macro checks if the camera is still operational. The 'uvd' - * pointer must be valid, uvd->dev must be valid, we are not - * removing the device and the device has not erred on us. - */ -#define CAMERA_IS_OPERATIONAL(uvd) (\ - (uvd != NULL) && \ - ((uvd)->dev != NULL) && \ - ((uvd)->last_error == 0) && \ - (!(uvd)->remove_pending)) - -/* - * We use macros to do YUV -> RGB conversion because this is - * very important for speed and totally unimportant for size. - * - * YUV -> RGB Conversion - * --------------------- - * - * B = 1.164*(Y-16) + 2.018*(V-128) - * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128) - * R = 1.164*(Y-16) + 1.596*(U-128) - * - * If you fancy integer arithmetics (as you should), hear this: - * - * 65536*B = 76284*(Y-16) + 132252*(V-128) - * 65536*G = 76284*(Y-16) - 53281*(U-128) - 25625*(V-128) - * 65536*R = 76284*(Y-16) + 104595*(U-128) - * - * Make sure the output values are within [0..255] range. - */ -#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x))) -#define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \ - int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \ - mm_y = (my) - 16; \ - mm_u = (mu) - 128; \ - mm_v = (mv) - 128; \ - mm_yc= mm_y * 76284; \ - mm_b = (mm_yc + 132252*mm_v ) >> 16; \ - mm_g = (mm_yc - 53281*mm_u - 25625*mm_v ) >> 16; \ - mm_r = (mm_yc + 104595*mm_u ) >> 16; \ - mb = LIMIT_RGB(mm_b); \ - mg = LIMIT_RGB(mm_g); \ - mr = LIMIT_RGB(mm_r); \ -} - -#define RING_QUEUE_SIZE (128*1024) /* Must be a power of 2 */ -#define RING_QUEUE_ADVANCE_INDEX(rq,ind,n) (rq)->ind = ((rq)->ind + (n)) & ((rq)->length-1) -#define RING_QUEUE_DEQUEUE_BYTES(rq,n) RING_QUEUE_ADVANCE_INDEX(rq,ri,n) -#define RING_QUEUE_PEEK(rq,ofs) ((rq)->queue[((ofs) + (rq)->ri) & ((rq)->length-1)]) - -struct RingQueue { - unsigned char *queue; /* Data from the Isoc data pump */ - int length; /* How many bytes allocated for the queue */ - int wi; /* That's where we write */ - int ri; /* Read from here until you hit write index */ - wait_queue_head_t wqh; /* Processes waiting */ -}; - -enum ScanState { - ScanState_Scanning, /* Scanning for header */ - ScanState_Lines /* Parsing lines */ -}; - -/* Completion states of the data parser */ -enum ParseState { - scan_Continue, /* Just parse next item */ - scan_NextFrame, /* Frame done, send it to V4L */ - scan_Out, /* Not enough data for frame */ - scan_EndParse /* End parsing */ -}; - -enum FrameState { - FrameState_Unused, /* Unused (no MCAPTURE) */ - FrameState_Ready, /* Ready to start grabbing */ - FrameState_Grabbing, /* In the process of being grabbed into */ - FrameState_Done, /* Finished grabbing, but not been synced yet */ - FrameState_Done_Hold, /* Are syncing or reading */ - FrameState_Error, /* Something bad happened while processing */ -}; - -/* - * Some frames may contain only even or odd lines. This type - * specifies what type of deinterlacing is required. - */ -enum Deinterlace { - Deinterlace_None=0, - Deinterlace_FillOddLines, - Deinterlace_FillEvenLines -}; - -#define USBVIDEO_NUMFRAMES 2 /* How many frames we work with */ -#define USBVIDEO_NUMSBUF 2 /* How many URBs linked in a ring */ - -/* This structure represents one Isoc request - URB and buffer */ -struct usbvideo_sbuf { - char *data; - struct urb *urb; -}; - -struct usbvideo_frame { - char *data; /* Frame buffer */ - unsigned long header; /* Significant bits from the header */ - - videosize_t canvas; /* The canvas (max. image) allocated */ - videosize_t request; /* That's what the application asked for */ - unsigned short palette; /* The desired format */ - - enum FrameState frameState;/* State of grabbing */ - enum ScanState scanstate; /* State of scanning */ - enum Deinterlace deinterlace; - int flags; /* USBVIDEO_FRAME_FLAG_xxx bit flags */ - - int curline; /* Line of frame we're working on */ - - long seqRead_Length; /* Raw data length of frame */ - long seqRead_Index; /* Amount of data that has been already read */ - - void *user; /* Additional data that user may need */ -}; - -/* Statistics that can be overlaid on screen */ -struct usbvideo_statistics { - unsigned long frame_num; /* Sequential number of the frame */ - unsigned long urb_count; /* How many URBs we received so far */ - unsigned long urb_length; /* Length of last URB */ - unsigned long data_count; /* How many bytes we received */ - unsigned long header_count; /* How many frame headers we found */ - unsigned long iso_skip_count; /* How many empty ISO packets received */ - unsigned long iso_err_count; /* How many bad ISO packets received */ -}; - -struct usbvideo; - -struct uvd { - struct video_device vdev; /* Must be the first field! */ - struct usb_device *dev; - struct usbvideo *handle; /* Points back to the struct usbvideo */ - void *user_data; /* Camera-dependent data */ - int user_size; /* Size of that camera-dependent data */ - int debug; /* Debug level for usbvideo */ - unsigned char iface; /* Video interface number */ - unsigned char video_endp; - unsigned char ifaceAltActive; - unsigned char ifaceAltInactive; /* Alt settings */ - unsigned long flags; /* FLAGS_USBVIDEO_xxx */ - unsigned long paletteBits; /* Which palettes we accept? */ - unsigned short defaultPalette; /* What palette to use for read() */ - struct mutex lock; - int user; /* user count for exclusive use */ - - videosize_t videosize; /* Current setting */ - videosize_t canvas; /* This is the width,height of the V4L canvas */ - int max_frame_size; /* Bytes in one video frame */ - - int uvd_used; /* Is this structure in use? */ - int streaming; /* Are we streaming Isochronous? */ - int grabbing; /* Are we grabbing? */ - int settingsAdjusted; /* Have we adjusted contrast etc.? */ - int last_error; /* What calamity struck us? */ - - char *fbuf; /* Videodev buffer area */ - int fbuf_size; /* Videodev buffer size */ - - int curframe; - int iso_packet_len; /* Videomode-dependent, saves bus bandwidth */ - - struct RingQueue dp; /* Isoc data pump */ - struct usbvideo_frame frame[USBVIDEO_NUMFRAMES]; - struct usbvideo_sbuf sbuf[USBVIDEO_NUMSBUF]; - - volatile int remove_pending; /* If set then about to exit */ - - struct video_picture vpic, vpic_old; /* Picture settings */ - struct video_capability vcap; /* Video capabilities */ - struct video_channel vchan; /* May be used for tuner support */ - struct usbvideo_statistics stats; - char videoName[32]; /* Holds name like "video7" */ -}; - -/* - * usbvideo callbacks (virtual methods). They are set when usbvideo - * services are registered. All of these default to NULL, except those - * that default to usbvideo-provided methods. - */ -struct usbvideo_cb { - int (*probe)(struct usb_interface *, const struct usb_device_id *); - void (*userFree)(struct uvd *); - void (*disconnect)(struct usb_interface *); - int (*setupOnOpen)(struct uvd *); - void (*videoStart)(struct uvd *); - void (*videoStop)(struct uvd *); - void (*processData)(struct uvd *, struct usbvideo_frame *); - void (*postProcess)(struct uvd *, struct usbvideo_frame *); - void (*adjustPicture)(struct uvd *); - int (*getFPS)(struct uvd *); - int (*overlayHook)(struct uvd *, struct usbvideo_frame *); - int (*getFrame)(struct uvd *, int); - int (*startDataPump)(struct uvd *uvd); - void (*stopDataPump)(struct uvd *uvd); - int (*setVideoMode)(struct uvd *uvd, struct video_window *vw); -}; - -struct usbvideo { - int num_cameras; /* As allocated */ - struct usb_driver usbdrv; /* Interface to the USB stack */ - char drvName[80]; /* Driver name */ - struct mutex lock; /* Mutex protecting camera structures */ - struct usbvideo_cb cb; /* Table of callbacks (virtual methods) */ - struct video_device vdt; /* Video device template */ - struct uvd *cam; /* Array of camera structures */ - struct module *md_module; /* Minidriver module */ -}; - - -/* - * This macro retrieves callback address from the struct uvd object. - * No validity checks are done here, so be sure to check the - * callback beforehand with VALID_CALLBACK. - */ -#define GET_CALLBACK(uvd,cbName) ((uvd)->handle->cb.cbName) - -/* - * This macro returns either callback pointer or NULL. This is safe - * macro, meaning that most of components of data structures involved - * may be NULL - this only results in NULL being returned. You may - * wish to use this macro to make sure that the callback is callable. - * However keep in mind that those checks take time. - */ -#define VALID_CALLBACK(uvd,cbName) ((((uvd) != NULL) && \ - ((uvd)->handle != NULL)) ? GET_CALLBACK(uvd,cbName) : NULL) - -int RingQueue_Dequeue(struct RingQueue *rq, unsigned char *dst, int len); -int RingQueue_Enqueue(struct RingQueue *rq, const unsigned char *cdata, int n); -void RingQueue_WakeUpInterruptible(struct RingQueue *rq); -void RingQueue_Flush(struct RingQueue *rq); - -static inline int RingQueue_GetLength(const struct RingQueue *rq) -{ - return (rq->wi - rq->ri + rq->length) & (rq->length-1); -} - -static inline int RingQueue_GetFreeSpace(const struct RingQueue *rq) -{ - return rq->length - RingQueue_GetLength(rq); -} - -void usbvideo_DrawLine( - struct usbvideo_frame *frame, - int x1, int y1, - int x2, int y2, - unsigned char cr, unsigned char cg, unsigned char cb); -void usbvideo_HexDump(const unsigned char *data, int len); -void usbvideo_SayAndWait(const char *what); -void usbvideo_TestPattern(struct uvd *uvd, int fullframe, int pmode); - -/* Memory allocation routines */ -unsigned long usbvideo_kvirt_to_pa(unsigned long adr); - -int usbvideo_register( - struct usbvideo **pCams, - const int num_cams, - const int num_extra, - const char *driverName, - const struct usbvideo_cb *cbTable, - struct module *md, - const struct usb_device_id *id_table); -struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams); -int usbvideo_RegisterVideoDevice(struct uvd *uvd); -void usbvideo_Deregister(struct usbvideo **uvt); - -int usbvideo_v4l_initialize(struct video_device *dev); - -void usbvideo_DeinterlaceFrame(struct uvd *uvd, struct usbvideo_frame *frame); - -/* - * This code performs bounds checking - use it when working with - * new formats, or else you may get oopses all over the place. - * If pixel falls out of bounds then it gets shoved back (as close - * to place of offence as possible) and is painted bright red. - * - * There are two important concepts: frame width, height and - * V4L canvas width, height. The former is the area requested by - * the application -for this very frame-. The latter is the largest - * possible frame that we can serve (we advertise that via V4L ioctl). - * The frame data is expected to be formatted as lines of length - * VIDEOSIZE_X(fr->request), total VIDEOSIZE_Y(frame->request) lines. - */ -static inline void RGB24_PUTPIXEL( - struct usbvideo_frame *fr, - int ix, int iy, - unsigned char vr, - unsigned char vg, - unsigned char vb) -{ - register unsigned char *pf; - int limiter = 0, mx, my; - mx = ix; - my = iy; - if (mx < 0) { - mx=0; - limiter++; - } else if (mx >= VIDEOSIZE_X((fr)->request)) { - mx= VIDEOSIZE_X((fr)->request) - 1; - limiter++; - } - if (my < 0) { - my = 0; - limiter++; - } else if (my >= VIDEOSIZE_Y((fr)->request)) { - my = VIDEOSIZE_Y((fr)->request) - 1; - limiter++; - } - pf = (fr)->data + V4L_BYTES_PER_PIXEL*((iy)*VIDEOSIZE_X((fr)->request) + (ix)); - if (limiter) { - *pf++ = 0; - *pf++ = 0; - *pf++ = 0xFF; - } else { - *pf++ = (vb); - *pf++ = (vg); - *pf++ = (vr); - } -} - -#endif /* usbvideo_h */ diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c deleted file mode 100644 index dc17cce2fbb6..000000000000 --- a/drivers/media/video/usbvideo/vicam.c +++ /dev/null @@ -1,952 +0,0 @@ -/* - * USB ViCam WebCam driver - * Copyright (c) 2002 Joe Burks (jburks@wavicle.org), - * Christopher L Cheney (ccheney@cheney.cx), - * Pavel Machek (pavel@ucw.cz), - * John Tyner (jtyner@cs.ucr.edu), - * Monroe Williams (monroe@pobox.com) - * - * Supports 3COM HomeConnect PC Digital WebCam - * Supports Compro PS39U WebCam - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * This source code is based heavily on the CPiA webcam driver which was - * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt - * - * Portions of this code were also copied from usbvideo.c - * - * Special thanks to the whole team at Sourceforge for help making - * this driver become a reality. Notably: - * Andy Armstrong who reverse engineered the color encoding and - * Pavel Machek and Chris Cheney who worked on reverse engineering the - * camera controls and wrote the first generation driver. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/videodev.h> -#include <linux/usb.h> -#include <linux/vmalloc.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/mutex.h> -#include <linux/firmware.h> -#include <linux/ihex.h> -#include "usbvideo.h" - -// #define VICAM_DEBUG - -#ifdef VICAM_DEBUG -#define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __func__, lineno, ##args) -#define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args) -#else -#define DBG(fmn,args...) do {} while(0) -#endif - -#define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org" -#define DRIVER_DESC "ViCam WebCam Driver" - -/* Define these values to match your device */ -#define USB_VICAM_VENDOR_ID 0x04c1 -#define USB_VICAM_PRODUCT_ID 0x009d -#define USB_COMPRO_VENDOR_ID 0x0602 -#define USB_COMPRO_PRODUCT_ID 0x1001 - -#define VICAM_BYTES_PER_PIXEL 3 -#define VICAM_MAX_READ_SIZE (512*242+128) -#define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240) -#define VICAM_FRAMES 2 - -#define VICAM_HEADER_SIZE 64 - -/* rvmalloc / rvfree copied from usbvideo.c - * - * Not sure why these are not yet non-statics which I can reference through - * usbvideo.h the same as it is in 2.4.20. I bet this will get fixed sometime - * in the future. - * -*/ -static void *rvmalloc(unsigned long size) -{ - void *mem; - unsigned long adr; - - size = PAGE_ALIGN(size); - mem = vmalloc_32(size); - if (!mem) - return NULL; - - memset(mem, 0, size); /* Clear the ram out, no junk to the user */ - adr = (unsigned long) mem; - while (size > 0) { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - return mem; -} - -static void rvfree(void *mem, unsigned long size) -{ - unsigned long adr; - - if (!mem) - return; - - adr = (unsigned long) mem; - while ((long) size > 0) { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - vfree(mem); -} - -struct vicam_camera { - u16 shutter_speed; // capture shutter speed - u16 gain; // capture gain - - u8 *raw_image; // raw data captured from the camera - u8 *framebuf; // processed data in RGB24 format - u8 *cntrlbuf; // area used to send control msgs - - struct video_device vdev; // v4l video device - struct usb_device *udev; // usb device - - /* guard against simultaneous accesses to the camera */ - struct mutex cam_lock; - - int is_initialized; - u8 open_count; - u8 bulkEndpoint; - int needsDummyRead; -}; - -static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id); -static void vicam_disconnect(struct usb_interface *intf); -static void read_frame(struct vicam_camera *cam, int framenum); -static void vicam_decode_color(const u8 *, u8 *); - -static int __send_control_msg(struct vicam_camera *cam, - u8 request, - u16 value, - u16 index, - unsigned char *cp, - u16 size) -{ - int status; - - /* cp must be memory that has been allocated by kmalloc */ - - status = usb_control_msg(cam->udev, - usb_sndctrlpipe(cam->udev, 0), - request, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_DEVICE, value, index, - cp, size, 1000); - - status = min(status, 0); - - if (status < 0) { - printk(KERN_INFO "Failed sending control message, error %d.\n", - status); - } - - return status; -} - -static int send_control_msg(struct vicam_camera *cam, - u8 request, - u16 value, - u16 index, - unsigned char *cp, - u16 size) -{ - int status = -ENODEV; - mutex_lock(&cam->cam_lock); - if (cam->udev) { - status = __send_control_msg(cam, request, value, - index, cp, size); - } - mutex_unlock(&cam->cam_lock); - return status; -} -static int -initialize_camera(struct vicam_camera *cam) -{ - int err; - const struct ihex_binrec *rec; - const struct firmware *uninitialized_var(fw); - - err = request_ihex_firmware(&fw, "vicam/firmware.fw", &cam->udev->dev); - if (err) { - printk(KERN_ERR "Failed to load \"vicam/firmware.fw\": %d\n", - err); - return err; - } - - for (rec = (void *)fw->data; rec; rec = ihex_next_binrec(rec)) { - memcpy(cam->cntrlbuf, rec->data, be16_to_cpu(rec->len)); - - err = send_control_msg(cam, 0xff, 0, 0, - cam->cntrlbuf, be16_to_cpu(rec->len)); - if (err) - break; - } - - release_firmware(fw); - - return err; -} - -static int -set_camera_power(struct vicam_camera *cam, int state) -{ - int status; - - if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0) - return status; - - if (state) { - send_control_msg(cam, 0x55, 1, 0, NULL, 0); - } - - return 0; -} - -static long -vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) -{ - void __user *user_arg = (void __user *)arg; - struct vicam_camera *cam = file->private_data; - long retval = 0; - - if (!cam) - return -ENODEV; - - switch (ioctlnr) { - /* query capabilities */ - case VIDIOCGCAP: - { - struct video_capability b; - - DBG("VIDIOCGCAP\n"); - memset(&b, 0, sizeof(b)); - strcpy(b.name, "ViCam-based Camera"); - b.type = VID_TYPE_CAPTURE; - b.channels = 1; - b.audios = 0; - b.maxwidth = 320; /* VIDEOSIZE_CIF */ - b.maxheight = 240; - b.minwidth = 320; /* VIDEOSIZE_48_48 */ - b.minheight = 240; - - if (copy_to_user(user_arg, &b, sizeof(b))) - retval = -EFAULT; - - break; - } - /* get/set video source - we are a camera and nothing else */ - case VIDIOCGCHAN: - { - struct video_channel v; - - DBG("VIDIOCGCHAN\n"); - if (copy_from_user(&v, user_arg, sizeof(v))) { - retval = -EFAULT; - break; - } - if (v.channel != 0) { - retval = -EINVAL; - break; - } - - v.channel = 0; - strcpy(v.name, "Camera"); - v.tuners = 0; - v.flags = 0; - v.type = VIDEO_TYPE_CAMERA; - v.norm = 0; - - if (copy_to_user(user_arg, &v, sizeof(v))) - retval = -EFAULT; - break; - } - - case VIDIOCSCHAN: - { - int v; - - if (copy_from_user(&v, user_arg, sizeof(v))) - retval = -EFAULT; - DBG("VIDIOCSCHAN %d\n", v); - - if (retval == 0 && v != 0) - retval = -EINVAL; - - break; - } - - /* image properties */ - case VIDIOCGPICT: - { - struct video_picture vp; - DBG("VIDIOCGPICT\n"); - memset(&vp, 0, sizeof (struct video_picture)); - vp.brightness = cam->gain << 8; - vp.depth = 24; - vp.palette = VIDEO_PALETTE_RGB24; - if (copy_to_user(user_arg, &vp, sizeof (struct video_picture))) - retval = -EFAULT; - break; - } - - case VIDIOCSPICT: - { - struct video_picture vp; - - if (copy_from_user(&vp, user_arg, sizeof(vp))) { - retval = -EFAULT; - break; - } - - DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth, - vp.palette); - - cam->gain = vp.brightness >> 8; - - if (vp.depth != 24 - || vp.palette != VIDEO_PALETTE_RGB24) - retval = -EINVAL; - - break; - } - - /* get/set capture window */ - case VIDIOCGWIN: - { - struct video_window vw; - vw.x = 0; - vw.y = 0; - vw.width = 320; - vw.height = 240; - vw.chromakey = 0; - vw.flags = 0; - vw.clips = NULL; - vw.clipcount = 0; - - DBG("VIDIOCGWIN\n"); - - if (copy_to_user(user_arg, (void *)&vw, sizeof(vw))) - retval = -EFAULT; - - // I'm not sure what the deal with a capture window is, it is very poorly described - // in the doc. So I won't support it now. - break; - } - - case VIDIOCSWIN: - { - - struct video_window vw; - - if (copy_from_user(&vw, user_arg, sizeof(vw))) { - retval = -EFAULT; - break; - } - - DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); - - if ( vw.width != 320 || vw.height != 240 ) - retval = -EFAULT; - - break; - } - - /* mmap interface */ - case VIDIOCGMBUF: - { - struct video_mbuf vm; - int i; - - DBG("VIDIOCGMBUF\n"); - memset(&vm, 0, sizeof (vm)); - vm.size = - VICAM_MAX_FRAME_SIZE * VICAM_FRAMES; - vm.frames = VICAM_FRAMES; - for (i = 0; i < VICAM_FRAMES; i++) - vm.offsets[i] = VICAM_MAX_FRAME_SIZE * i; - - if (copy_to_user(user_arg, (void *)&vm, sizeof(vm))) - retval = -EFAULT; - - break; - } - - case VIDIOCMCAPTURE: - { - struct video_mmap vm; - // int video_size; - - if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) { - retval = -EFAULT; - break; - } - - DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format); - - if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 ) - retval = -EINVAL; - - // in theory right here we'd start the image capturing - // (fill in a bulk urb and submit it asynchronously) - // - // Instead we're going to do a total hack job for now and - // retrieve the frame in VIDIOCSYNC - - break; - } - - case VIDIOCSYNC: - { - int frame; - - if (copy_from_user((void *)&frame, user_arg, sizeof(int))) { - retval = -EFAULT; - break; - } - DBG("VIDIOCSYNC: %d\n", frame); - - read_frame(cam, frame); - vicam_decode_color(cam->raw_image, - cam->framebuf + - frame * VICAM_MAX_FRAME_SIZE ); - - break; - } - - /* pointless to implement overlay with this camera */ - case VIDIOCCAPTURE: - case VIDIOCGFBUF: - case VIDIOCSFBUF: - case VIDIOCKEY: - retval = -EINVAL; - break; - - /* tuner interface - we have none */ - case VIDIOCGTUNER: - case VIDIOCSTUNER: - case VIDIOCGFREQ: - case VIDIOCSFREQ: - retval = -EINVAL; - break; - - /* audio interface - we have none */ - case VIDIOCGAUDIO: - case VIDIOCSAUDIO: - retval = -EINVAL; - break; - default: - retval = -ENOIOCTLCMD; - break; - } - - return retval; -} - -static int -vicam_open(struct file *file) -{ - struct vicam_camera *cam = video_drvdata(file); - - DBG("open\n"); - - if (!cam) { - printk(KERN_ERR - "vicam video_device improperly initialized"); - return -EINVAL; - } - - /* cam_lock/open_count protects us from simultaneous opens - * ... for now. we probably shouldn't rely on this fact forever. - */ - - mutex_lock(&cam->cam_lock); - if (cam->open_count > 0) { - printk(KERN_INFO - "vicam_open called on already opened camera"); - mutex_unlock(&cam->cam_lock); - return -EBUSY; - } - - cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); - if (!cam->raw_image) { - mutex_unlock(&cam->cam_lock); - return -ENOMEM; - } - - cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); - if (!cam->framebuf) { - kfree(cam->raw_image); - mutex_unlock(&cam->cam_lock); - return -ENOMEM; - } - - cam->cntrlbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); - if (!cam->cntrlbuf) { - kfree(cam->raw_image); - rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); - mutex_unlock(&cam->cam_lock); - return -ENOMEM; - } - - cam->needsDummyRead = 1; - cam->open_count++; - - file->private_data = cam; - mutex_unlock(&cam->cam_lock); - - - // First upload firmware, then turn the camera on - - if (!cam->is_initialized) { - initialize_camera(cam); - - cam->is_initialized = 1; - } - - set_camera_power(cam, 1); - - return 0; -} - -static int -vicam_close(struct file *file) -{ - struct vicam_camera *cam = file->private_data; - int open_count; - struct usb_device *udev; - - DBG("close\n"); - - /* it's not the end of the world if - * we fail to turn the camera off. - */ - - set_camera_power(cam, 0); - - kfree(cam->raw_image); - rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); - kfree(cam->cntrlbuf); - - mutex_lock(&cam->cam_lock); - - cam->open_count--; - open_count = cam->open_count; - udev = cam->udev; - - mutex_unlock(&cam->cam_lock); - - if (!open_count && !udev) { - kfree(cam); - } - - return 0; -} - -static void vicam_decode_color(const u8 *data, u8 *rgb) -{ - /* vicam_decode_color - Convert from Vicam Y-Cr-Cb to RGB - * Copyright (C) 2002 Monroe Williams (monroe@pobox.com) - */ - - int i, prevY, nextY; - - prevY = 512; - nextY = 512; - - data += VICAM_HEADER_SIZE; - - for( i = 0; i < 240; i++, data += 512 ) { - const int y = ( i * 242 ) / 240; - - int j, prevX, nextX; - int Y, Cr, Cb; - - if ( y == 242 - 1 ) { - nextY = -512; - } - - prevX = 1; - nextX = 1; - - for ( j = 0; j < 320; j++, rgb += 3 ) { - const int x = ( j * 512 ) / 320; - const u8 * const src = &data[x]; - - if ( x == 512 - 1 ) { - nextX = -1; - } - - Cr = ( src[prevX] - src[0] ) + - ( src[nextX] - src[0] ); - Cr /= 2; - - Cb = ( src[prevY] - src[prevX + prevY] ) + - ( src[prevY] - src[nextX + prevY] ) + - ( src[nextY] - src[prevX + nextY] ) + - ( src[nextY] - src[nextX + nextY] ); - Cb /= 4; - - Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 ); - - if ( i & 1 ) { - int Ct = Cr; - Cr = Cb; - Cb = Ct; - } - - if ( ( x ^ i ) & 1 ) { - Cr = -Cr; - Cb = -Cb; - } - - rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) + - 500 ) / 900, 0, 255 ); - rgb[1] = clamp( ( ( Y - ( 392 * Cb ) - - ( 813 * Cr ) ) + - 500 ) / 1000, 0, 255 ); - rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) + - 500 ) / 1300, 0, 255 ); - - prevX = -1; - } - - prevY = -512; - } -} - -static void -read_frame(struct vicam_camera *cam, int framenum) -{ - unsigned char *request = cam->cntrlbuf; - int realShutter; - int n; - int actual_length; - - if (cam->needsDummyRead) { - cam->needsDummyRead = 0; - read_frame(cam, framenum); - } - - memset(request, 0, 16); - request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain - - request[1] = 0; // 512x242 capture - - request[2] = 0x90; // the function of these two bytes - request[3] = 0x07; // is not yet understood - - if (cam->shutter_speed > 60) { - // Short exposure - realShutter = - ((-15631900 / cam->shutter_speed) + 260533) / 1000; - request[4] = realShutter & 0xFF; - request[5] = (realShutter >> 8) & 0xFF; - request[6] = 0x03; - request[7] = 0x01; - } else { - // Long exposure - realShutter = 15600 / cam->shutter_speed - 1; - request[4] = 0; - request[5] = 0; - request[6] = realShutter & 0xFF; - request[7] = realShutter >> 8; - } - - // Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0 - request[8] = 0; - // bytes 9-15 do not seem to affect exposure or image quality - - mutex_lock(&cam->cam_lock); - - if (!cam->udev) { - goto done; - } - - n = __send_control_msg(cam, 0x51, 0x80, 0, request, 16); - - if (n < 0) { - printk(KERN_ERR - " Problem sending frame capture control message"); - goto done; - } - - n = usb_bulk_msg(cam->udev, - usb_rcvbulkpipe(cam->udev, cam->bulkEndpoint), - cam->raw_image, - 512 * 242 + 128, &actual_length, 10000); - - if (n < 0) { - printk(KERN_ERR "Problem during bulk read of frame data: %d\n", - n); - } - - done: - mutex_unlock(&cam->cam_lock); -} - -static ssize_t -vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) -{ - struct vicam_camera *cam = file->private_data; - - DBG("read %d bytes.\n", (int) count); - - if (*ppos >= VICAM_MAX_FRAME_SIZE) { - *ppos = 0; - return 0; - } - - if (*ppos == 0) { - read_frame(cam, 0); - vicam_decode_color(cam->raw_image, - cam->framebuf + - 0 * VICAM_MAX_FRAME_SIZE); - } - - count = min_t(size_t, count, VICAM_MAX_FRAME_SIZE - *ppos); - - if (copy_to_user(buf, &cam->framebuf[*ppos], count)) { - count = -EFAULT; - } else { - *ppos += count; - } - - if (count == VICAM_MAX_FRAME_SIZE) { - *ppos = 0; - } - - return count; -} - - -static int -vicam_mmap(struct file *file, struct vm_area_struct *vma) -{ - // TODO: allocate the raw frame buffer if necessary - unsigned long page, pos; - unsigned long start = vma->vm_start; - unsigned long size = vma->vm_end-vma->vm_start; - struct vicam_camera *cam = file->private_data; - - if (!cam) - return -ENODEV; - - DBG("vicam_mmap: %ld\n", size); - - /* We let mmap allocate as much as it wants because Linux was adding 2048 bytes - * to the size the application requested for mmap and it was screwing apps up. - if (size > VICAM_FRAMES*VICAM_MAX_FRAME_SIZE) - return -EINVAL; - */ - - pos = (unsigned long)cam->framebuf; - while (size > 0) { - page = vmalloc_to_pfn((void *)pos); - if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) - return -EAGAIN; - - start += PAGE_SIZE; - pos += PAGE_SIZE; - if (size > PAGE_SIZE) - size -= PAGE_SIZE; - else - size = 0; - } - - return 0; -} - -static const struct v4l2_file_operations vicam_fops = { - .owner = THIS_MODULE, - .open = vicam_open, - .release = vicam_close, - .read = vicam_read, - .mmap = vicam_mmap, - .ioctl = vicam_ioctl, -}; - -static struct video_device vicam_template = { - .name = "ViCam-based USB Camera", - .fops = &vicam_fops, - .release = video_device_release_empty, -}; - -/* table of devices that work with this driver */ -static struct usb_device_id vicam_table[] = { - {USB_DEVICE(USB_VICAM_VENDOR_ID, USB_VICAM_PRODUCT_ID)}, - {USB_DEVICE(USB_COMPRO_VENDOR_ID, USB_COMPRO_PRODUCT_ID)}, - {} /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(usb, vicam_table); - -static struct usb_driver vicam_driver = { - .name = "vicam", - .probe = vicam_probe, - .disconnect = vicam_disconnect, - .id_table = vicam_table -}; - -/** - * vicam_probe - * @intf: the interface - * @id: the device id - * - * Called by the usb core when a new device is connected that it thinks - * this driver might be interested in. - */ -static int -vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) -{ - struct usb_device *dev = interface_to_usbdev(intf); - int bulkEndpoint = 0; - const struct usb_host_interface *interface; - const struct usb_endpoint_descriptor *endpoint; - struct vicam_camera *cam; - - printk(KERN_INFO "ViCam based webcam connected\n"); - - interface = intf->cur_altsetting; - - DBG(KERN_DEBUG "Interface %d. has %u. endpoints!\n", - interface->desc.bInterfaceNumber, (unsigned) (interface->desc.bNumEndpoints)); - endpoint = &interface->endpoint[0].desc; - - if (usb_endpoint_is_bulk_in(endpoint)) { - /* we found a bulk in endpoint */ - bulkEndpoint = endpoint->bEndpointAddress; - } else { - printk(KERN_ERR - "No bulk in endpoint was found ?! (this is bad)\n"); - } - - if ((cam = - kzalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) { - printk(KERN_WARNING - "could not allocate kernel memory for vicam_camera struct\n"); - return -ENOMEM; - } - - - cam->shutter_speed = 15; - - mutex_init(&cam->cam_lock); - - memcpy(&cam->vdev, &vicam_template, sizeof(vicam_template)); - video_set_drvdata(&cam->vdev, cam); - - cam->udev = dev; - cam->bulkEndpoint = bulkEndpoint; - - if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1) < 0) { - kfree(cam); - printk(KERN_WARNING "video_register_device failed\n"); - return -EIO; - } - - printk(KERN_INFO "ViCam webcam driver now controlling device %s\n", - video_device_node_name(&cam->vdev)); - - usb_set_intfdata (intf, cam); - - return 0; -} - -static void -vicam_disconnect(struct usb_interface *intf) -{ - int open_count; - struct vicam_camera *cam = usb_get_intfdata (intf); - usb_set_intfdata (intf, NULL); - - /* we must unregister the device before taking its - * cam_lock. This is because the video open call - * holds the same lock as video unregister. if we - * unregister inside of the cam_lock and open also - * uses the cam_lock, we get deadlock. - */ - - video_unregister_device(&cam->vdev); - - /* stop the camera from being used */ - - mutex_lock(&cam->cam_lock); - - /* mark the camera as gone */ - - cam->udev = NULL; - - /* the only thing left to do is synchronize with - * our close/release function on who should release - * the camera memory. if there are any users using the - * camera, it's their job. if there are no users, - * it's ours. - */ - - open_count = cam->open_count; - - mutex_unlock(&cam->cam_lock); - - if (!open_count) { - kfree(cam); - } - - printk(KERN_DEBUG "ViCam-based WebCam disconnected\n"); -} - -/* - */ -static int __init -usb_vicam_init(void) -{ - int retval; - DBG(KERN_INFO "ViCam-based WebCam driver startup\n"); - retval = usb_register(&vicam_driver); - if (retval) - printk(KERN_WARNING "usb_register failed!\n"); - return retval; -} - -static void __exit -usb_vicam_exit(void) -{ - DBG(KERN_INFO - "ViCam-based WebCam driver shutdown\n"); - - usb_deregister(&vicam_driver); -} - -module_init(usb_vicam_init); -module_exit(usb_vicam_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); -MODULE_FIRMWARE("vicam/firmware.fw"); |