# HG changeset patch # User Mauro Carvalho Chehab # Node ID 23bf8d65df2af2bd5a4adba3063efd6195337dec # Parent b1484f51c635a562802a47f04aa939c6e06463ef Add usbvision driver From: Mauro Carvalho Chehab This patch adds usbvision into V4L/DVB HG tree. Usbvision driver is a GPL driver, made by: Joerg Heckenbach and Dwaine Garden V4L2 migration made by: Thierry Merle Adaptation to kernel tree made by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab diff -r b1484f51c635 -r 23bf8d65df2a linux/drivers/media/video/Kconfig --- a/linux/drivers/media/video/Kconfig Sat Oct 21 18:01:35 2006 -0200 +++ b/linux/drivers/media/video/Kconfig Tue Oct 24 09:24:36 2006 -0300 @@ -681,6 +681,18 @@ source "drivers/media/video/pvrusb2/Kcon source "drivers/media/video/em28xx/Kconfig" +config VIDEO_USBVISION + tristate "USB video devices based on NT1003/1005/1005" + depends on I2C && VIDEO_V4L2 + select VIDEO_SAA711X if VIDEO_HELPER_CHIPS_AUTO + ---help--- + There are more than 50 different USB video devices based on + NT1003/1004/1005 USB Bridges. This driver enables using those + devices. + + To compile this driver as a module, choose M here: the + module will be called ovcamchip. + source "drivers/media/video/usbvideo/Kconfig" source "drivers/media/video/et61x251/Kconfig" diff -r b1484f51c635 -r 23bf8d65df2a linux/drivers/media/video/Makefile --- a/linux/drivers/media/video/Makefile Sat Oct 21 18:01:35 2006 -0200 +++ b/linux/drivers/media/video/Makefile Tue Oct 24 09:24:36 2006 -0300 @@ -64,6 +64,7 @@ obj-$(CONFIG_VIDEO_SAA7134) += ir-kbd-i2 obj-$(CONFIG_VIDEO_SAA7134) += ir-kbd-i2c.o saa7134/ obj-$(CONFIG_VIDEO_CX88) += cx88/ obj-$(CONFIG_VIDEO_EM28XX) += em28xx/ +obj-$(CONFIG_VIDEO_USBVISION) += usbvision/ obj-$(CONFIG_VIDEO_TVP5150) += tvp5150.o obj-$(CONFIG_VIDEO_PVRUSB2) += pvrusb2/ obj-$(CONFIG_VIDEO_MSP3400) += msp3400.o diff -r b1484f51c635 -r 23bf8d65df2a linux/drivers/media/video/usbvision/Makefile --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/linux/drivers/media/video/usbvision/Makefile Tue Oct 24 09:24:36 2006 -0300 @@ -0,0 +1,5 @@ +usbvision-objs := usbvision-core.o usbvision-i2c.o + +obj-$(CONFIG_VIDEO_USBVISION) += usbvision.o + +EXTRA_CFLAGS += -Idrivers/media/video diff -r b1484f51c635 -r 23bf8d65df2a linux/drivers/media/video/usbvision/usbvision-core.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/linux/drivers/media/video/usbvision/usbvision-core.c Tue Oct 24 09:24:36 2006 -0300 @@ -0,0 +1,6343 @@ +/* + * USB USBVISION Video device driver 0.9.8.3cvs (For Kernel 2.4.19-2.4.32 + 2.6.0-2.6.16) + * + * + * + * Copyright (c) 1999-2005 Joerg Heckenbach + * + * This module is part of usbvision driver project. + * + * 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. + * + * Let's call the version 0.... until compression decoding is completely + * implemented. + * + * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach. + * It was based on USB CPiA driver written by Peter Pregler, + * Scott J. Bertin and Johannes Erdfelt + * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler & + * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink + * Updates to driver completed by Dwaine P. Garden + * + * History: + * + * Mar. 2000 - 15.12.2000: (0.0.0 - 0.2.0) + * Several alpha drivers and the first beta. + * + * Since Dec. 2000: (0.2.1) or (v2.1) + * Code changes or updates by Dwaine Garden and every other person. + * + * Added: New Hauppauge TV device Vendor ID: 0x0573 + * Product ID: 0x4D01 + * (Thanks to Giovanni Garberoglio) + * + * Added: UK Hauppauge WinTV-USB Vendor ID: 0x0573 + * Product ID: 0x4D02 + * (Thanks to Derek Freeman-Jones) + * + * Feb, 2001 - Apr 08, 2001: (0.3.0) + * - Some fixes. Driver is now more stable. + * - Scratch is organized as ring-buffer now for better performance + * - DGA (overlay) is now supported. + * !!!!Danger!!!! Clipping is not yet implemented. Your system will + * crash if your video window leaves the screen!!! + * - Max. Framesize is set to 320x240. There isn't more memory on the + * nt1003 video device for the FIFO. + * - Supported video palettes: RGB565, RGB555, RGB24, RGB32 + * + * + * Apr 15, 2001: (0.3.1-test...) + * - Clipping is implemented + * - NTSC is now coloured (Thanks to Dwaine Garden) + * - Added SECAM colour detection in saa7111-new + * - Added: French Hauppauge WinTV USB Vendor ID: 0x0573 + * Product ID: 0x4D03 + * (Thanks to Julius Hrivnac) + * - Added: US Hauppauge WINTV USB Vendor ID: 0x0573 + * Product ID: 0x4D00 + * (Thanks to Derrick J Brashear) + * - Changes for adding new devices. There's now a table in usbvision.h. + * Adding your devices data to the usbvision_device_data table is all + * you need to add a new device. + * + * May 11, 2001: (0.3.2-test...) (Thanks to Derek Freeman-Jones) + * - Support YUV422 raw format for people with hardware scaling. + * - Only power on the device when opened (use option PowerOnAtOpen=0 to disable it). + * - Turn off audio so we can listen to Line In. + * + * July 5, 2001 - (Patch the driver to run with Kernel 2.4.6) + * - Fixed a problem with the number of parameters passed to video_register_device. + * + * July 6, 2001 - Added: HAUPPAUGE WINTV-USB FM USA Vendor ID: 0x0573 + * Product ID: 0x4D10 + * (Thanks to Braddock Gaskill) + * Added: USBGear USBG-V1 resp. HAMA USB + * Vendor ID: 0x0573 + * Product ID: 0x0003 + * (Thanks to Bradley A. Singletary and Juergen Weigert) + * + * Jan 24, 2002 - (0.3.3-test...) + * - Moved all global variables that are device specific the usb_usbvision struct + * - Fixed the 64x48 unchangable image in xawtv when starting it with overlay + * - Add VideoNorm and TunerType to the usb_device_data table + * - Checked the audio channels and mute for HAUPPAUGE WinTV USB FM + * - Implemented the power on when opening the device. But some software opens + * the device several times when starting. So the i2c parts are just registered + * by an open, when they become deregistered by the next close. You can speed + * up tuner detection, when adding "options tuner addr=your_addr" to /etc/modules.conf + * - Begin to resize the frame in width and height. So it will be possible to watch i.e. + * 384x288 pixels at 23 fps. + * + * Feb 10, 2002 + * - Added radio device + * + * + * Jul 30, 2002 - (Thanks Cameron Maxwell) + * - Changes to usbvision.h --fixed usbvision device data structure, incorrectly had (0x0573, 0x4d21) for WinTV-USB II, should be 0x4d20. + * - Changes for device WinTV-USB II (0x0573. 0x4D21). It does not have a FM tuner. + * - Added the real device HAUPPAUGE WINTV-USB II (PAL) to the device structure in usbvision.h. + * - Changes to saa7113-new, the video is 8 bit data for the Phillips SAA7113 not 16bit like SAA7111. + * - Tuned lots of setup registers for the Phillips SAA7113 video chipset. + * - Changes to the supplied makefile. (Dwaine Garden) Still needs to be fixed so it will compile modules on different distrubutions. + * + * + * Aug 10, 2002 - (Thanks Mike Klinke) + * - Changes to usbvision.txt -- Fixed instructions on the location to copy the contents of the tgz file. + * - Added device WinTV-USB FM Model 621 (0x0573. 0x4D30). There is another device which carries the same name. Kept that device in the device structure. + * + * Aug 12, 2002 - Dwaine Garden + * - Added the ability to read the NT100x chip for the MaxISOPacketLength and USB Bandwidth + * Setting of the video device. + * - Adjustments to the SAA7113H code for proper video output. + * - Changes to usbvision.h, so all the devices with FM tuners are working. + * + * Feb 10, 2003 - Joerg Heckenbach + * - fixed endian bug for Motorola PPC + * + * Feb 13, 2003 - Joerg Heckenbach + * - fixed Vin_Reg setting and presetting from usbvision_device_data() + * + * Apr 19, 2003 - Dwaine Garden + * - Fixed compiling errors under RedHat v9.0. from uvirt_to_kva and usbvision_mmap. (Thanks Cameron Maxwell) + * - Changed pte_offset to pte_offset_kernel. + * - Changed remap_page_range and added additional parameter to function. + * - Change setup parameters for the D-Link V100 USB device + * - Added a new device to the usbvision driver. Pinnacle Studio PCTV USB (PAL) 0x2304 0x0110 + * - Screwed up the sourceforge.net cvs respository! 8*) + * + * Apr 22, 2002 - Dwaine Garden + * - Added a new device to the usbvision driver. Dazzle DVC-80 (PAL) 0x07d0 0x0004. (Thanks Carl Anderson) + * - Changes to some of the comments. + * + * June 06, 2002 - Ivan, Dwaine Garden + * - Ivan updates for fine tuning device parameters without driver recompiling. (Ivan) + * - Changes to some of the comments. (Dwaine Garden) + * - Changes to the makefile - Better CPU settings. (Ivan) + * - Changes to device Hauppauge WinTv-USB III (PAL) FM Model 568 - Fine tuning parameters (Ivan) + * + * + * Oct 16, 2003 - 0.9.0 - Joerg Heckenbach + * - Implementation of the first part of the decompression algorithm for intra frames. + * The resolution has to be 320x240. A dynamic adaption of compression deepth is + * missing yet. + * + * Oct 22, 2003 - 0.9.1 - Joerg Heckenbach + * - Implementation of the decompression algorithm for inter frames. + * The resolution still has to be 320x240. + * + * Nov 2003 - Feb 2004 - 0.9.2 to 0.9.3 - Joerg Heckenbach + * - Implement last unknown compressed block type. But color is still noisy. + * - Finding criteria for adaptive compression adjustment. + * - Porting to 2.6 kernels, but still working under 2.4 + * + * Feb 04, 2004 - 0.9.4 Joerg Heckenbach + * - Found bug in color decompression. Color is OK now. + * + * Feb 09, 2004 - 0.9.5 Joerg Heckenbach + * - Add auto-recognition of chip type NT1003 or NT1004. + * - Add adaptive compression adjustment. + * - Patched saa7113 multiplexer switching (Thanks to Orlando F.S. Bordoni) + * + * Feb 24, 2004 - 0.9.6 Joerg Heckenbach + * - Add a timer to wait before poweroff at close, to save start time in + * some video applications + * + * Mar 4, 2004 - 0.9.6 Dwaine Garden + * - Added device Global Village GV-007 (NTSC) to usbvision.h (Thanks to Abe Skolnik) + * - Forgot to add this device to the driver. 8*) + * + * June 2, 2004 - 0.9.6 Dwaine Garden + * - Fixed sourceforge.net cvs repository. + * - Added #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,26) for .owner to help compiling under kernels 2.4.x which do not have the i2c v2.8.x updates. + * - Added device Hauppauge WinTv-USB III (PAL) FM Model 597 to usbvision.h + * + * July 1, 2004 -0.9.6 Dwaine Garden + * - Patch was submitted by Hal Finkel to fix the problem with the tuner not working under kernel 2.6.7. + * - Thanks Hal..... + * + * July 30, 2004 - 0.9.6 Dwaine Garden + * - Patch was submitted by Tobias Diaz to fix Model ID mismatch in usbvision.h. + * - Thanks..... + * + * August 12, 2004 - 0.9.6 Dwaine Garden + * - Updated the readme file so people could install the driver under the configuration file for kernel 2.6.x recompiles. Now people can use make xconfig! + * - Added new device "Camtel Technology Corp TVB330-USB FM". + * - Sourceforge.net CVS has been updated with all the changes. + * + * August 20, 2004 - 0.9.7 Dwaine Garden + * - Added Device "Hauppauge USB Live Model 600" + * - Fixed up all the devices which did not have a default tuner type in usbvision.h. It's best guess, at least until someone with the device tells me otherwise. + * - Sourceforge.net CVS has been updated with all the changes. + * - Clean up the driver. + * + * September 13, 2004 - 0.9.8 Dwaine Garden + * - Changed usbvision_muxsel to address the problem with black & white s-video output for NT1004 devices with saa7114 video decoder. Thanks to Emmanuel for the patch and testing. + * - Fixed up SECAM devices which could not properly output video. Changes to usbmuxsel. Thanks to Emmanuel for the patch and everyone with a SECAM device which help test. + * - Removed some commented out code. Clean up. + * - Tried to fix up the annoying empty directories in the sourceforge.net cvs. Fuck it up again. 8*( + * + * November 15, 2004 - 0.9.8 Dwaine Garden + * - Release new tar - 0.9.8 on sourceforge.net + * - Added some new devices to usbvision.h WinTV USB Model 602 40201 Rev B282, Hauppague WinTV USB Model 602 40201 Rev B285 + * - Added better compatibility for 2.6.x kernels. + * - Hardware full screen scaling in grabdisplay mode. + * - Better support for sysfs. More code to follow for both video device and radio device. Device information is located at /sys/class/video4linux/video0 + * - Added module_param so loaded module parameters are displayed in sysfs. Driver parameters should show up in /sys/module/usbvision + * - Adjusted the SAA7111 registers to match the 2.6.x kernel SAA7111 code. Thanks to the person which helped test. + * - Changed to wait_event_interruptible. For all the people running Fedora 2. + * - Added some screenshots of actual video captures on sourceforge.net. + * + * November 24, 2004 - 0.9.8.1cvs Dwaine Garden + * - Added patch to check for palette and format in VIDIOCSPICT. Helix Producer should work fine with the driver now. Thanks Jason Simpson + * - Two device description changes and two additions for the maintainer of usb.ids. + * + * December 2, 2004 - 0.9.8.1cvs Dwaine Garden + * - Added patch for YUV420P and YUV422P video output. Thanks to Alex Smith. + * - Better support for mythtv. + * + * January 2, 2005 - 0.9.8.1cvs Dwaine Garden + * - Setup that you can specify which device is used for video. Default is auto detect next available device number eg. /dev/videoX + * - Setup that you can specify which device is used for radio. Default is auto detect next available device number eg. /dev/radioX + * - usb_unlink_urb() is deprecated for synchronous unlinks. Using usb_kill_urb instead. + * - usbvision_kvirt_to_pa is deprecated. Removed. + * - Changes are related to kernel changes for 2.6.10. (Fedora 4) + * + * February 2, 2005 - 0.9.8.1cvs Dwaine Garden + * - Added a new device to usbvision.h Dazzle DVC 50. Thanks to Luiz S. + * + * March 29, 2005 - 0.9.8.1cvs Dwaine Garden + * - Fixed compile error with saa7113 under kernels 2.6.11+ + * - Added module parameter to help people with Black and White output with using s-video input. Some cables and input device are wired differently. + * - Removed the .id from the i2c usbvision template. There was a change to the i2c with kernels 2.6.11+. + * + * April 9, 2005 - 0.9.8.1cvs Dwaine Garden + * - Added in the 2.4 and 2.6 readme files the SwitchSVideoInput parameter information. This will help people setup the right values for the parameter. + * If your device experiences Black and White images with the S-Video Input. Set this parameter to 1 when loading the module. + * - Replaced the wrong 2.6 readme file. I lost the right version. Someone sent me the right version by e-mail. Thanks. + * - Released new module version on sourceforge.net. So everyone can enjoy all the fixes and additional device support. + * + * April 20, 2005 - 0.9.8.2cvs Dwaine Garden + * - Release lock in usbvision_v4l_read_done. -Thanks to nplanel for the patch. + * - Additional comments to the driver. + * - Fixed some spelling mistakes. 8*) + * + * April 23, 2005 - 0.9.8.2cvs Joerg Heckenbach + * - Found bug in usbvision line counting. Now there should be no spurious lines in the image any longer. + * - Swapped usbvision_register_video and usbvision_configure_video to fix problem with PowerOnAtOpen=0. + * Thanks to Erwan Velu + * + * April 26, 2005 - 0.9.8.2cvs Joerg Heckenbach + * - Fixed problem with rmmod module and oppses. Replaced vfree(usbvision->overlay_base) with iounmap(usbvision->overlay_base). + * - Added function usb_get_dev(dev) and ; To help with unloading the module multiple times without crashing. + * (Keep the reference count in kobjects correct) + * + * June 14, 2005 - 0.9.8.2cvs Dwaine + * - Missed a change in saa7113.c for checking kernel version. Added conditional if's. + * + * June 15, 2005 - 0.9.8.2cvs Dwaine + * - Added new device WinTV device VendorId 0573 and ProductId 4d29. + * - Hacked some support for newer NT1005 devices. This devices only seem to have one configuration, not multiple configurations like the NT1004. + * + * June 29, 2005 - 0.9.8.2cvs Dwaine + * - Added new device WinTV device VendorId 0573 and ProductId 4d37. + * - Because of the first empty entry in usbvision_table, modutils failed to create the necessary entries for modules.usbmap. + * This means hotplug won't work for usbvision. Thanks to Gary Ng. + * - Sent an e-mail to the maintainer of usb.ids. New devices identified need to be added. + * - Fixed compile error with saa7113 under kernel 2.6.12. + * + * July 6, 2005 - 0.9.8.2cvs Dwaine + * - Patch submitted by Gary Ng for two additional procfs entries. Device Input and Frequency setting. + * + * July 12, 2005 - 0.9.8.2cvs Dwaine + * - New tuner identified for some devices it's called TCL_MFPE05. This tuner uses the same API as tuner 38 in tuner.c. + * - Thanks to lynx31 for contacting Hauppage and asking them. + * - I have no clue as to which devices use this new tuner, so people will have to contact me and tell me. + * + * July 21, 2005 - 0.9.8.2cvs Dwaine + * - Patched usbvision.c with missing ifdef kernversion statement so the module will compile with older kernels and v4l. + * - Thanks to cipe007...... + * + * May 19, 2006 - 0.9.8.3cvs Dwaine + * - Patched usbvision.c and i2c-algo.c so they will compile with kernel 2.6.16 + * - Adjust device "Pinnacle Studio PCTV USB (PAL) FM" values in usbvision.h + * + * May 24, 2006 - 0.9.8.3cvs Dwaine + * -Pinnacle Studio PCTV USB (NTSC) FM uses saa7111, not saa7113 like first thought. + * -Updated usbvision.h + * + * Aug 15, 2006 - 0.9.8.3cvs Dwaine + * -Added saa711x module into cvs, since the newer saa7115 module in newer kernels is v4l2. The usbvision driver is only v4l. + * -Updated makefile to put compiled modules into correct location. + * + * Aug 21, 2006 - 0.9.8.3cvs Dwaine + * -Changed number of bytes for i2c write to 4 as per the NT100X spec sheet. Thanks to Merlum for finding it. + * -Remove the radio option for device Hauppauge WinTV USB device Model 40219 Rev E189. This device does not have a FM radio. Thanks to Shadwell. + * -Added radio option for device Hauppauge WinTV USB device Model 40219 Rev E189 again. Just got an e-mail indicating their device has one. 8*) + * + * Aug 27, 2006 - 0.9.8.3cvs Dwaine + * -Changed ifdef statement so the usbvision driver will compile with kernels at 2.6.12. + * -Updated readme files for new updated tuner list for v4l devices. + * + * + * + * TODO: + * - use submit_urb for all setup packets + * - Fix memory settings for nt1004. It is 4 times as big as the + * nt1003 memory. + * - Add audio on endpoint 3 for nt1004 chip. Seems impossible, needs a codec interface. Which one? + * - Clean up the driver. + * - optimization for performance. + * - Add Videotext capability (VBI). Working on it..... + * - Check audio for other devices + * - Add v4l2 interface + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include "compat.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "usbvision-i2c.h" + +#define USBVISION_DRIVER_VERSION_MAJOR 0 +#define USBVISION_DRIVER_VERSION_MINOR 8 +#define USBVISION_DRIVER_VERSION_PATCHLEVEL 0 + +#define USBVISION_VERSION __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) " " USBVISION_DRIVER_VERSION_COMMENT +#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL) + +#include +#include +#include +#include + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + #include + #include + #include +#else + #include + #include +#endif + +#ifdef CONFIG_KMOD +#include +#endif + +#include "usbvision.h" +#include "usbvision_ioctl.h" + + +#define DRIVER_VERSION "0.9.8.3cvs for Linux kernels 2.4.19-2.4.32 + 2.6.0-2.6.17, compiled at "__DATE__", "__TIME__ +#define EMAIL "joerg@heckenbach-aw.de" +#define DRIVER_AUTHOR "Joerg Heckenbach , Dwaine Garden " +#define DRIVER_DESC "USBVision USB Video Device Driver for Linux" +#define DRIVER_LICENSE "GPL" +#define DRIVER_ALIAS "USBVision" + +#define ENABLE_HEXDUMP 0 /* Enable if you need it */ + + +#define USBVISION_DEBUG /* Turn on debug messages */ + +#ifdef USBVISION_DEBUG + #define PDEBUG(level, fmt, args...) \ + if (debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args) +#else + #define PDEBUG(level, fmt, args...) do {} while(0) +#endif + +#define DBG_IOCTL 1<<3 +#define DBG_IO 1<<4 +#define DBG_RIO 1<<5 +#define DBG_HEADER 1<<7 +#define DBG_PROBE 1<<8 +#define DBG_IRQ 1<<9 +#define DBG_ISOC 1<<10 +#define DBG_PARSE 1<<11 +#define DBG_SCRATCH 1<<12 +#define DBG_FUNC 1<<13 +#define DBG_I2C 1<<14 + +#define DEBUG(x...) /* General Debug */ +#define IODEBUG(x...) /* Debug IO */ +#define OVDEBUG(x...) /* Debug overlay */ +#define MDEBUG(x...) /* Debug memory management */ + +//String operations +#define rmspace(str) while(*str==' ') str++; +#define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++; + + +static int usbvision_nr = 0; // sequential number of usbvision device + + +static const int max_imgwidth = MAX_FRAME_WIDTH; +static const int max_imgheight = MAX_FRAME_HEIGHT; +static const int min_imgwidth = MIN_FRAME_WIDTH; +static const int min_imgheight = MIN_FRAME_HEIGHT; + +#define FRAMERATE_MIN 0 +#define FRAMERATE_MAX 31 + + +enum { + ISOC_MODE_YUV422 = 0x03, + ISOC_MODE_YUV420 = 0x14, + ISOC_MODE_COMPRESS = 0x60, +}; + +/* + * The value of 'scratch_buf_size' affects quality of the picture + * in many ways. Shorter buffers may cause loss of data when client + * is too slow. Larger buffers are memory-consuming and take longer + * to work with. This setting can be adjusted, but the default value + * should be OK for most desktop users. + */ +#define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer +static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE; + +static int init_brightness = 128; // Initalize the brightness of the video device +static int init_contrast = 192; // Initalize the contrast of the video device +static int init_saturation = 128; // Initalize the staturation mode of the video device +static int init_hue = 128; // Initalize the Hue settings of the video device + +// Function prototypes +static int usbvision_restart_isoc(struct usb_usbvision *usbvision); +static int usbvision_begin_streaming(struct usb_usbvision *usbvision); +static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel, int norm); +static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, short len); +static int usbvision_i2c_read(void *data, unsigned char addr, char *buf, short len); +static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg); +static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, unsigned char value); +static int usbvision_request_intra (struct usb_usbvision *usbvision); +static int usbvision_unrequest_intra (struct usb_usbvision *usbvision); +static int usbvision_adjust_compression (struct usb_usbvision *usbvision); +static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision); +static void usbvision_release(struct usb_usbvision *usbvision); +static int usbvision_set_input(struct usb_usbvision *usbvision); +static int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height); +static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd, void *arg); + + +// Bit flags (options) +#define FLAGS_RETRY_VIDIOCSYNC (1 << 0) +#define FLAGS_MONOCHROME (1 << 1) +#define FLAGS_DISPLAY_HINTS (1 << 2) +#define FLAGS_OSD_STATS (1 << 3) +#define FLAGS_FORCE_TESTPATTERN (1 << 4) +#define FLAGS_SEPARATE_FRAMES (1 << 5) +#define FLAGS_CLEAN_FRAMES (1 << 6) + +// Default initalization of device driver parameters +static int flags = 0; // Set the default Overlay Display mode of the device driver +static int debug = 0; // Set the default Debug Mode of the device driver +static int isocMode = ISOC_MODE_COMPRESS; // Set the default format for ISOC endpoint +static int adjustCompression = 1; // Set the compression to be adaptive +static int dga = 1; // Set the default Direct Graphic Access +static int PowerOnAtOpen = 1; // Set the default device to power on at startup +static int SwitchSVideoInput = 0; // To help people with Black and White output with using s-video input. Some cables and input device are wired differently. +static int video_nr = -1; // Sequential Number of Video Device +static int radio_nr = -1; // Sequential Number of Radio Device +static int vbi_nr = -1; // Sequential Number of VBI Device +static char *CustomDevice=NULL; // Set as nothing.... + +// Grab parameters for the device driver + +#if defined(module_param) // Showing parameters under SYSFS +module_param(flags, int, 0444); +module_param(debug, int, 0444); +module_param(isocMode, int, 0444); +module_param(adjustCompression, int, 0444); +module_param(dga, int, 0444); +module_param(PowerOnAtOpen, int, 0444); +module_param(SwitchSVideoInput, int, 0444); +module_param(video_nr, int, 0444); +module_param(radio_nr, int, 0444); +module_param(vbi_nr, int, 0444); +module_param(CustomDevice, charp, 0444); +#else // Old Style +MODULE_PARM(flags, "i"); // Grab the Overlay Display mode of the device driver +MODULE_PARM(debug, "i"); // Grab the Debug Mode of the device driver +MODULE_PARM(isocMode, "i"); // Grab the video format of the video device +MODULE_PARM(adjustCompression, "i"); // Grab the compression to be adaptive +MODULE_PARM(dga, "i"); // Grab the Direct Graphic Access +MODULE_PARM(PowerOnAtOpen, "i"); // Grab the device to power on at startup +MODULE_PARM(SwitchSVideoInput, "i"); // To help people with Black and White output with using s-video input. Some cables and input device are wired differently. +MODULE_PARM(video_nr, "i"); // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...) +MODULE_PARM(radio_nr, "i"); // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...) +MODULE_PARM(vbi_nr, "i"); // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...) +MODULE_PARM(CustomDevice, "s"); // .... CustomDevice +#endif + +MODULE_PARM_DESC(flags, " Set the default Overlay Display mode of the device driver. Default: 0 (Off)"); +MODULE_PARM_DESC(debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)"); +MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)"); +MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device. Default: 1 (On)"); +MODULE_PARM_DESC(dga, " Set the Direct Graphic Access for the device. Default: 1 (On)"); +MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)"); +MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)"); +MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)"); +MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); +MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)"); +MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device. Default: null"); + + +// Misc stuff +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE(DRIVER_LICENSE); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) + MODULE_VERSION(DRIVER_VERSION); + MODULE_ALIAS(DRIVER_ALIAS); +#endif + +#ifdef MODULE +static unsigned int autoload = 1; +#else +static unsigned int autoload = 0; +#endif + + +/****************************************************************************************/ +/* SYSFS Code - Copied from the stv680.c usb module. */ +/* Device information is located at /sys/class/video4linux/video0 */ +/* Device parameters information is located at /sys/module/usbvision */ +/* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber */ +/****************************************************************************************/ + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) + +#define YES_NO(x) ((x) ? "Yes" : "No") + +static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd) +{ + struct video_device *vdev = to_video_device(cd); + return video_get_drvdata(vdev); +} + +static ssize_t show_version(struct class_device *cd, char *buf) +{ + return sprintf(buf, "%s\n", DRIVER_VERSION); +} +static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL); + +static ssize_t show_model(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString); +} +static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL); + +static ssize_t show_hue(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->hue >> 8); +} +static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); + +static ssize_t show_contrast(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->contrast >> 8); +} +static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); + +static ssize_t show_brightness(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->brightness >> 8); +} +static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); + +static ssize_t show_saturation(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->saturation >> 8); +} +static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); + +static ssize_t show_streaming(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", YES_NO(usbvision->streaming)); +} +static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); + +static ssize_t show_overlay(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", YES_NO(usbvision->overlay)); +} +static CLASS_DEVICE_ATTR(overlay, S_IRUGO, show_overlay, NULL); + +static ssize_t show_compression(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS)); +} +static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); + +static ssize_t show_device_bridge(struct class_device *class_dev, char *buf) +{ + struct video_device *vdev = to_video_device(class_dev); + struct usb_usbvision *usbvision = video_get_drvdata(vdev); + return sprintf(buf, "%d\n", usbvision->bridgeType); +} +static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); + +static void usbvision_create_sysfs(struct video_device *vdev) +{ + if (vdev) { + video_device_create_file(vdev, &class_device_attr_version); + video_device_create_file(vdev, &class_device_attr_model); + video_device_create_file(vdev, &class_device_attr_hue); + video_device_create_file(vdev, &class_device_attr_contrast); + video_device_create_file(vdev, &class_device_attr_brightness); + video_device_create_file(vdev, &class_device_attr_saturation); + video_device_create_file(vdev, &class_device_attr_streaming); + video_device_create_file(vdev, &class_device_attr_overlay); + video_device_create_file(vdev, &class_device_attr_compression); + video_device_create_file(vdev, &class_device_attr_bridge); + } +} + +static void usbvision_remove_sysfs(struct video_device *vdev) +{ + if (vdev) { + video_device_remove_file(vdev, &class_device_attr_version); + video_device_remove_file(vdev, &class_device_attr_model); + video_device_remove_file(vdev, &class_device_attr_hue); + video_device_remove_file(vdev, &class_device_attr_contrast); + video_device_remove_file(vdev, &class_device_attr_brightness); + video_device_remove_file(vdev, &class_device_attr_saturation); + video_device_remove_file(vdev, &class_device_attr_streaming); + video_device_remove_file(vdev, &class_device_attr_overlay); + video_device_remove_file(vdev, &class_device_attr_compression); + video_device_remove_file(vdev, &class_device_attr_bridge); + } +} + +#endif + +/*******************************/ +/* Memory management functions */ +/*******************************/ + +/* + * Here we want the physical address of the memory. + * This is used when initializing the contents of the area. + */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10) +unsigned long usbvision_kvirt_to_pa(unsigned long adr) +{ + unsigned long kva, ret; + + kva = (unsigned long) page_address(vmalloc_to_page((void *)adr)); + kva |= adr & (PAGE_SIZE-1); /* restore the offset */ + ret = __pa(kva); + return ret; +} +#endif + +void *usbvision_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) { + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + mem_map_reserve(vmalloc_to_page((void *)adr)); + #else + SetPageReserved(vmalloc_to_page((void *)adr)); + #endif + adr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + return mem; +} + +void usbvision_rvfree(void *mem, unsigned long size) +{ + unsigned long adr; + + if (!mem) + return; + + adr = (unsigned long) mem; + while ((long) size > 0) { + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + mem_map_unreserve(vmalloc_to_page((void *)adr)); + #else + ClearPageReserved(vmalloc_to_page((void *)adr)); + #endif + adr += PAGE_SIZE; + size -= PAGE_SIZE; + } + vfree(mem); +} + + +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,24) +/* helper functions to access driver private data. */ +static inline void *video_get_drvdata(struct video_device *dev) +{ + return dev->priv; +} + +static inline void video_set_drvdata(struct video_device *dev, void *data) +{ + dev->priv = data; +} + +struct video_device *video_device_alloc(void) +{ + struct video_device *vfd; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15) + vfd = kmalloc(sizeof(*vfd),GFP_KERNEL); + if (NULL == vfd) + return NULL; + memset(vfd,0,sizeof(*vfd)); +#else +vfd = kzalloc(sizeof(*vfd),GFP_KERNEL); + if (NULL == vfd) + return NULL; +#endif + return vfd; +} + +void video_device_release(struct video_device *vfd) +{ + kfree(vfd); +} +#endif + + + + +#if ENABLE_HEXDUMP +static void usbvision_hexdump(const unsigned char *data, int len) +{ + char tmp[80]; + int i, k; + + for (i = k = 0; len > 0; i++, len--) { + if (i > 0 && (i % 16 == 0)) { + printk("%s\n", tmp); + k = 0; + } + k += sprintf(&tmp[k], "%02x ", data[i]); + } + if (k > 0) + printk("%s\n", tmp); +} +#endif + + +/* These procedures handle the scratch ring buffer */ +int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */ +{ + int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr; + if (len < 0) { + len += scratch_buf_size; + } + PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len); + + return len; +} + + +/* This returns the free space left in the buffer */ +int scratch_free(struct usb_usbvision *usbvision) +{ + int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr; + if (free <= 0) { + free += scratch_buf_size; + } + if (free) { + free -= 1; /* at least one byte in the buffer must */ + /* left blank, otherwise there is no chance to differ between full and empty */ + } + PDEBUG(DBG_SCRATCH, "return %d\n", free); + + return free; +} + + +void *debug_memcpy(void *dest, void *src, size_t len) +{ + printk(KERN_DEBUG "memcpy(%p, %p, %d);\n", dest, src, len); + return memcpy(dest, src, len); +} + + +/* This puts data into the buffer */ +int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len) +{ + int len_part; + + if (usbvision->scratch_write_ptr + len < scratch_buf_size) { + memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len); + usbvision->scratch_write_ptr += len; + } + else { + len_part = scratch_buf_size - usbvision->scratch_write_ptr; + memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part); + if (len == len_part) { + usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */ + } + else { + memcpy(usbvision->scratch, data + len_part, len - len_part); + usbvision->scratch_write_ptr = len - len_part; + } + } + + PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr); + + return len; +} + +/* This marks the write_ptr as position of new frame header */ +void scratch_mark_header(struct usb_usbvision *usbvision) +{ + PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr); + + usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] = + usbvision->scratch_write_ptr; + usbvision->scratch_headermarker_write_ptr += 1; + usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER; +} + +/* This gets data from the buffer at the given "ptr" position */ +int scratch_get_extra(struct usb_usbvision *usbvision, unsigned char *data, int *ptr, int len) +{ + int len_part; + if (*ptr + len < scratch_buf_size) { + memcpy(data, usbvision->scratch + *ptr, len); + *ptr += len; + } + else { + len_part = scratch_buf_size - *ptr; + memcpy(data, usbvision->scratch + *ptr, len_part); + if (len == len_part) { + *ptr = 0; /* just set the y_ptr to zero */ + } + else { + memcpy(data + len_part, usbvision->scratch, len - len_part); + *ptr = len - len_part; + } + } + + PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr); + + return len; +} + + +/* This sets the scratch extra read pointer */ +void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, int len) +{ + *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size; + + PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); +} + + +/*This increments the scratch extra read pointer */ +void scratch_inc_extra_ptr(int *ptr, int len) +{ + *ptr = (*ptr + len) % scratch_buf_size; + + PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); +} + + +/* This gets data from the buffer */ +int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, int len) +{ + int len_part; + if (usbvision->scratch_read_ptr + len < scratch_buf_size) { + memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len); + usbvision->scratch_read_ptr += len; + } + else { + len_part = scratch_buf_size - usbvision->scratch_read_ptr; + memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part); + if (len == len_part) { + usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */ + } + else { + memcpy(data + len_part, usbvision->scratch, len - len_part); + usbvision->scratch_read_ptr = len - len_part; + } + } + + PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr); + + return len; +} + + +/* This sets read pointer to next header and returns it */ +int scratch_get_header(struct usb_usbvision *usbvision,struct usbvision_frame_header *header) +{ + int errCode = 0; + + PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr); + + while (usbvision->scratch_headermarker_write_ptr - + usbvision->scratch_headermarker_read_ptr != 0) { + usbvision->scratch_read_ptr = + usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr]; + usbvision->scratch_headermarker_read_ptr += 1; + usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER; + scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH); + if ((header->magic_1 == USBVISION_MAGIC_1) + && (header->magic_2 == USBVISION_MAGIC_2) + && (header->headerLength == USBVISION_HEADER_LENGTH)) { + errCode = USBVISION_HEADER_LENGTH; + header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8); + header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8); + break; + } + } + + return errCode; +} + + +/*This removes len bytes of old data from the buffer */ +void scratch_rm_old(struct usb_usbvision *usbvision, int len) +{ + + usbvision->scratch_read_ptr += len; + usbvision->scratch_read_ptr %= scratch_buf_size; + PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr); +} + + +/*This resets the buffer - kills all data in it too */ +void scratch_reset(struct usb_usbvision *usbvision) +{ + PDEBUG(DBG_SCRATCH, "\n"); + + usbvision->scratch_read_ptr = 0; + usbvision->scratch_write_ptr = 0; + usbvision->scratch_headermarker_read_ptr = 0; + usbvision->scratch_headermarker_write_ptr = 0; + usbvision->isocstate = IsocState_NoFrame; +} + + + +/* Here comes the OVERLAY stuff */ + +/* Tell the interrupt handler what to to. */ +static +void usbvision_cap(struct usb_usbvision* usbvision, int on) +{ + DEBUG(printk(KERN_DEBUG "usbvision_cap: overlay was %d, set it to %d\n", usbvision->overlay, on);) + + if (on) { + usbvision->overlay = 1; + } + else { + usbvision->overlay = 0; + } +} + + + + +/* append a new clipregion to the vector of video_clips */ +static +void usbvision_new_clip(struct v4l2_format* vf, struct v4l2_clip* vcp, int x, int y, int w, int h) +{ + vcp[vf->fmt.win.clipcount].c.left = x; + vcp[vf->fmt.win.clipcount].c.top = y; + vcp[vf->fmt.win.clipcount].c.width = w; + vcp[vf->fmt.win.clipcount].c.height = h; + vf->fmt.win.clipcount++; +} + + +#define mark_pixel(x,y) usbvision->clipmask[((x) + (y) * MAX_FRAME_WIDTH)/32] |= 0x00000001<<((x)%32) +#define clipped_pixel(index) usbvision->clipmask[(index)/32] & (0x00000001<<((index)%32)) + +static +void usbvision_built_overlay(struct usb_usbvision* usbvision, int count, struct v4l2_clip *vcp) +{ + usbvision->overlay_win = usbvision->overlay_base + + (signed int)usbvision->vid_win.fmt.win.w.left * usbvision->depth / 8 + + (signed int)usbvision->vid_win.fmt.win.w.top * usbvision->vid_buf.fmt.bytesperline; + + IODEBUG(printk(KERN_DEBUG "built_overlay base=%p, win=%p, bpl=%d, clips=%d, size=%dx%d\n", + usbvision->overlay_base, usbvision->overlay_win, + usbvision->vid_buf.fmt.bytesperline, count, + usbvision->vid_win.fmt.win.w.width, usbvision->vid_win.fmt.win.w.height);) + + + /* Add here generation of clipping mask */ +{ + int x_start, x_end, y_start, y_end; + int clip_index, x, y; + + memset(usbvision->clipmask, 0, USBVISION_CLIPMASK_SIZE); + + OVDEBUG(printk(KERN_DEBUG "clips = %d\n", count);) + + for(clip_index = 0; clip_index < count; clip_index++) { + OVDEBUG(printk(KERN_DEBUG "clip: %d,%d,%d,%d\n", vcp[clip_index].x, + vcp[clip_index].y, + vcp[clip_index].width, + vcp[clip_index].height);) + + x_start = vcp[clip_index].c.left; + if(x_start >= (int)usbvision->vid_win.fmt.win.w.width) { + OVDEBUG(printk(KERN_DEBUG "x_start=%d\n", x_start);) + continue; //clipping window is right of overlay window + } + x_end = x_start + vcp[clip_index].c.width; + if(x_end <= 0) { + OVDEBUG(printk(KERN_DEBUG "x_end=%d\n", x_end);) + continue; //clipping window is left of overlay window + } + + y_start = vcp[clip_index].c.top; + if(y_start >= (int)usbvision->vid_win.fmt.win.w.height) { + OVDEBUG(printk(KERN_DEBUG "y_start=%d\n", y_start);) + continue; //clipping window is below overlay window + } + y_end = y_start + vcp[clip_index].c.height; + if(y_end <= 0) { + OVDEBUG(printk(KERN_DEBUG "y_end=%d\n", y_end);) + continue; //clipping window is above overlay window + } + + //clip the clipping window + if (x_start < 0) { + x_start = 0; + } + if (x_end > (int)usbvision->vid_win.fmt.win.w.width) { + x_end = (int)usbvision->vid_win.fmt.win.w.width; + } + if (y_start < 0) { + y_start = 0; + } + if (y_end > (int)usbvision->vid_win.fmt.win.w.height) { + y_end = (int)usbvision->vid_win.fmt.win.w.height; + } + + OVDEBUG(printk(KERN_DEBUG "clip_o: %d,%d,%d,%d\n", x_start, y_start, x_end, y_end);) + + + + for(y = y_start; y < y_end; y++) { + for(x = x_start; x < x_end; x++) { + mark_pixel(x,y); + } + } + } +} + +} + + + +void usbvision_osd_char(struct usb_usbvision *usbvision, + struct usbvision_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; + + if ((usbvision == NULL) || (frame == NULL)) + return; + + if (ch >= '0' && ch <= '9') + ch -= '0'; + else if (ch >= 'A' && ch <= 'F') + ch = 10 + (ch - 'A'); + else if (ch >= 'a' && ch <= 'f') + ch = 10 + (ch - 'a'); + else + return; + digit = digits[ch]; + + for (iy = 0; iy < 5; iy++) { + for (ix = 0; ix < 3; ix++) { + if (digit & 0x8000) { + // USBVISION_PUTPIXEL(frame, x + ix, y + iy, + // 0xFF, 0xFF, 0xFF); + } + digit = digit << 1; + } + } +} + + +void usbvision_osd_string(struct usb_usbvision *usbvision, + struct usbvision_frame *frame, + int x, int y, const char *str) +{ + while (*str) { + usbvision_osd_char(usbvision, frame, x, y, *str); + str++; + x += 4; /* 3 pixels character + 1 space */ + } +} + +/* + * usb_usbvision_osd_stats() + * + * On screen display of important debugging information. + * + */ +void usbvision_osd_stats(struct usb_usbvision *usbvision, + struct usbvision_frame *frame) +{ + const int y_diff = 8; + char tmp[16]; + int x = 10; + int y = 10; + + sprintf(tmp, "%8x", usbvision->frame_num); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->isocUrbCount); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->urb_length); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->isocDataCount); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->header_count); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->scratch_ovf_count); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->isocSkipCount); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8lx", usbvision->isocErrCount); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8x", usbvision->saturation); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8x", usbvision->hue); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8x", usbvision->brightness >> 8); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + + sprintf(tmp, "%8x", usbvision->contrast >> 12); + usbvision_osd_string(usbvision, frame, x, y, tmp); + y += y_diff; + +} + +/* + * usbvision_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 + * + */ +void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe, + int pmode) +{ + static const char proc[] = "usbvision_testpattern"; + struct usbvision_frame *frame; + unsigned char *f; + int num_cell = 0; + int scan_length = 0; + static int num_pass = 0; + + if (usbvision == NULL) { + printk(KERN_ERR "%s: usbvision == NULL\n", proc); + return; + } + if ((usbvision->curFrameNum < 0) + || (usbvision->curFrameNum >= USBVISION_NUMFRAMES)) { + printk(KERN_ERR "%s: usbvision->curFrameNum=%d.\n", proc, + usbvision->curFrameNum); + return; + } + + /* Grab the current frame */ + frame = &usbvision->frame[usbvision->curFrameNum]; + + /* Optionally start at the beginning */ + if (fullframe) { + frame->curline = 0; + frame->scanlength = 0; + } + + /* Form every scan line */ + for (; frame->curline < frame->frmheight; frame->curline++) { + int i; + + f = frame->data + (usbvision->curwidth * 3 * frame->curline); + for (i = 0; i < usbvision->curwidth; 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->grabstate = FrameState_Done; + frame->scanlength += scan_length; + ++num_pass; + + /* We do this unconditionally, regardless of FLAGS_OSD_STATS */ + usbvision_osd_stats(usbvision, frame); +} + +/* + * Here comes the data parsing stuff that is run as interrupt + */ + +/* + * usbvision_find_header() + * + * Locate one of supported header markers in the scratch buffer. + */ +static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision) +{ + struct usbvision_frame *frame; + int foundHeader = 0; + + if (usbvision->overlay) { + frame = &usbvision->overlay_frame; + } + else { + frame = &usbvision->frame[usbvision->curFrameNum]; + } + + while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) { + // found header in scratch + PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u", + frame->isocHeader.magic_2, + frame->isocHeader.magic_1, + frame->isocHeader.headerLength, + frame->isocHeader.frameNum, + frame->isocHeader.framePhase, + frame->isocHeader.frameLatency, + frame->isocHeader.dataFormat, + frame->isocHeader.formatParam, + frame->isocHeader.frameWidth, + frame->isocHeader.frameHeight); + + if (usbvision->requestIntra) { + if (frame->isocHeader.formatParam & 0x80) { + foundHeader = 1; + usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time + usbvision_unrequest_intra(usbvision); + break; + } + } + else { + foundHeader = 1; + break; + } + } + + if (foundHeader) { + frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width; + frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height; + frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3; + usbvision->curFrame = frame; + } + else { // no header found + PDEBUG(DBG_HEADER, "skipping scratch data, no header"); + scratch_reset(usbvision); + return ParseState_EndParse; + } + + // found header + if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) { + //check isocHeader.frameNum for lost frames + if (usbvision->lastIsocFrameNum >= 0) { + if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) { + // unexpected frame drop: need to request new intra frame + PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum); + usbvision_request_intra(usbvision); + return ParseState_NextFrame; + } + } + usbvision->lastIsocFrameNum = frame->isocHeader.frameNum; + } + usbvision->header_count++; + frame->scanstate = ScanState_Lines; + frame->curline = 0; + + if (flags & FLAGS_FORCE_TESTPATTERN) { + usbvision_testpattern(usbvision, 1, 1); + return ParseState_NextFrame; + } + return ParseState_Continue; +} + +static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision, + long *pcopylen) +{ + volatile struct usbvision_frame *frame; + unsigned char *f; + int len; + int i; + unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components + unsigned char rv, gv, bv; // RGB components + int clipmask_index, bytes_per_pixel; + int overlay = usbvision->overlay; + int stretch_bytes, clipmask_add; + + if (overlay) { + frame = &usbvision->overlay_frame; + if (usbvision->overlay_base == NULL) { + //video_buffer is not set yet + return ParseState_NextFrame; + } + f = usbvision->overlay_win + frame->curline * + usbvision->vid_buf.fmt.bytesperline; + } + else { + frame = &usbvision->frame[usbvision->curFrameNum]; + f = frame->data + (frame->v4l2_linesize * frame->curline); + } + + /* Make sure there's enough data for the entire line */ + len = (frame->isocHeader.frameWidth * 2)+5; + if (scratch_len(usbvision) < len) { + PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len); + return ParseState_Out; + } + + if ((frame->curline + 1) >= frame->frmheight) { + return ParseState_NextFrame; + } + + bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; + stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; + clipmask_index = frame->curline * MAX_FRAME_WIDTH; + clipmask_add = usbvision->stretch_width; + + for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) { + + scratch_get(usbvision, &yuyv[0], 4); + + if((overlay) && (clipped_pixel(clipmask_index))) { + f += bytes_per_pixel; + } + else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f++ = yuyv[0]; // Y + *f++ = yuyv[3]; // U + } + else { + + YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv); + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); + *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); + break; + case V4L2_PIX_FMT_RGB24: + *f++ = bv; + *f++ = gv; + *f++ = rv; + break; + case V4L2_PIX_FMT_RGB32: + *f++ = bv; + *f++ = gv; + *f++ = rv; + f++; + break; + case V4L2_PIX_FMT_RGB555: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); + *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); + break; + } + } + clipmask_index += clipmask_add; + f += stretch_bytes; + + if((overlay) && (clipped_pixel(clipmask_index))) { + f += bytes_per_pixel; + } + else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f++ = yuyv[2]; // Y + *f++ = yuyv[1]; // V + } + else { + + YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv); + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); + *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); + break; + case V4L2_PIX_FMT_RGB24: + *f++ = bv; + *f++ = gv; + *f++ = rv; + break; + case V4L2_PIX_FMT_RGB32: + *f++ = bv; + *f++ = gv; + *f++ = rv; + f++; + break; + case V4L2_PIX_FMT_RGB555: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); + *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); + break; + } + } + clipmask_index += clipmask_add; + f += stretch_bytes; + } + + frame->curline += usbvision->stretch_height; + *pcopylen += frame->v4l2_linesize * usbvision->stretch_height; + + if (frame->curline >= frame->frmheight) { + return ParseState_NextFrame; + } + else { + return ParseState_Continue; + } +} + + +static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed, + unsigned char *Decompressed, int *StartPos, + int *BlockTypeStartPos, int Len) +{ + int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen; + unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator; + + Integrator = 0; + Pos = *StartPos; + BlockTypePos = *BlockTypeStartPos; + MaxPos = 396; //Pos + Len; + ExtraPos = Pos; + BlockLen = 0; + BlockByte = 0; + BlockCode = 0; + BlockType = 0; + BlockTypeByte = 0; + BlockTypeLen = 0; + RestPixel = Len; + + for (Idx = 0; Idx < Len; Idx++) { + + if (BlockLen == 0) { + if (BlockTypeLen==0) { + BlockTypeByte = Compressed[BlockTypePos]; + BlockTypePos++; + BlockTypeLen = 4; + } + BlockType = (BlockTypeByte & 0xC0) >> 6; + + //statistic: + usbvision->ComprBlockTypes[BlockType]++; + + Pos = ExtraPos; + if (BlockType == 0) { + if(RestPixel >= 24) { + Idx += 23; + RestPixel -= 24; + Integrator = Decompressed[Idx]; + } else { + Idx += RestPixel - 1; + RestPixel = 0; + } + } else { + BlockCode = Compressed[Pos]; + Pos++; + if (RestPixel >= 24) { + BlockLen = 24; + } else { + BlockLen = RestPixel; + } + RestPixel -= BlockLen; + ExtraPos = Pos + (BlockLen / 4); + } + BlockTypeByte <<= 2; + BlockTypeLen -= 1; + } + if (BlockLen > 0) { + if ((BlockLen%4) == 0) { + BlockByte = Compressed[Pos]; + Pos++; + } + if (BlockType == 1) { //inter Block + Integrator = Decompressed[Idx]; + } + switch (BlockByte & 0xC0) { + case 0x03<<6: + Integrator += Compressed[ExtraPos]; + ExtraPos++; + break; + case 0x02<<6: + Integrator += BlockCode; + break; + case 0x00: + Integrator -= BlockCode; + break; + } + Decompressed[Idx] = Integrator; + BlockByte <<= 2; + BlockLen -= 1; + } + } + *StartPos = ExtraPos; + *BlockTypeStartPos = BlockTypePos; + return Idx; +} + + +/* + * usbvision_parse_compress() + * + * Parse compressed frame from the scratch buffer, put + * decoded RGB value into the current frame buffer and add the written + * number of bytes (RGB) to the *pcopylen. + * + */ +static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision, + long *pcopylen) +{ +#define USBVISION_STRIP_MAGIC 0x5A +#define USBVISION_STRIP_LEN_MAX 400 +#define USBVISION_STRIP_HEADER_LEN 3 + + struct usbvision_frame *frame; + unsigned char *f,*u = NULL ,*v = NULL; + unsigned char StripData[USBVISION_STRIP_LEN_MAX]; + unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN]; + int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos; + int clipmask_index, bytes_per_pixel, rc; + int overlay = usbvision->overlay; + int imageSize; + unsigned char rv, gv, bv; + static unsigned char *Y, *U, *V; + + if (overlay) { + frame = &usbvision->overlay_frame; + imageSize = frame->frmwidth * frame->frmheight; + if (usbvision->overlay_base == NULL) { + //video_buffer is not set yet + return ParseState_NextFrame; + } + f = usbvision->overlay_win + frame->curline * + usbvision->vid_buf.fmt.bytesperline; + } + else { + frame = &usbvision->frame[usbvision->curFrameNum]; + imageSize = frame->frmwidth * frame->frmheight; + if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) || + (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) + { // this is a planar format + //... v4l2_linesize not used here. + f = frame->data + (frame->width * frame->curline); + } else + f = frame->data + (frame->v4l2_linesize * frame->curline); + + if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers + // get base of u and b planes add halfoffset + + u = frame->data + + imageSize + + (frame->frmwidth >>1) * frame->curline ; + v = u + (imageSize >>1 ); + + } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){ + + v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ; + u = v + (imageSize >>2) ; + } + } + + if (frame->curline == 0) { + usbvision_adjust_compression(usbvision); + } + + if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) { + return ParseState_Out; + } + + //get strip header without changing the scratch_read_ptr + scratch_set_extra_ptr(usbvision, &StripPtr, 0); + scratch_get_extra(usbvision, &StripHeader[0], &StripPtr, + USBVISION_STRIP_HEADER_LEN); + + if (StripHeader[0] != USBVISION_STRIP_MAGIC) { + // wrong strip magic + usbvision->stripMagicErrors++; + return ParseState_NextFrame; + } + + if (frame->curline != (int)StripHeader[2]) { + //line number missmatch error + usbvision->stripLineNumberErrors++; + } + + StripLen = 2 * (unsigned int)StripHeader[1]; + if (StripLen > USBVISION_STRIP_LEN_MAX) { + // strip overrun + // I think this never happens + usbvision_request_intra(usbvision); + } + + if (scratch_len(usbvision) < StripLen) { + //there is not enough data for the strip + return ParseState_Out; + } + + if (usbvision->IntraFrameBuffer) { + Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline; + U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2); + V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2); + } + else { + return ParseState_NextFrame; + } + + bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; + clipmask_index = frame->curline * MAX_FRAME_WIDTH; + + scratch_get(usbvision, StripData, StripLen); + + IdxEnd = frame->frmwidth; + BlockTypePos = USBVISION_STRIP_HEADER_LEN; + StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2; + BlockPos = StartBlockPos; + + usbvision->BlockPos = BlockPos; + + if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) { + //return ParseState_Continue; + } + if (StripLen > usbvision->maxStripLen) { + usbvision->maxStripLen = StripLen; + } + + if (frame->curline%2) { + if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) { + //return ParseState_Continue; + } + } + else { + if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) { + //return ParseState_Continue; + } + } + + if (BlockPos > usbvision->comprBlockPos) { + usbvision->comprBlockPos = BlockPos; + } + if (BlockPos > StripLen) { + usbvision->stripLenErrors++; + } + + for (Idx = 0; Idx < IdxEnd; Idx++) { + if((overlay) && (clipped_pixel(clipmask_index))) { + f += bytes_per_pixel; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f++ = Y[Idx]; + *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2]; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) { + *f++ = Y[Idx]; + if ( Idx & 0x01) + *u++ = U[Idx>>1] ; + else + *v++ = V[Idx>>1]; + } + else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { + *f++ = Y [Idx]; + if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){ + +/* only need do this for 1 in 4 pixels */ +/* intraframe buffer is YUV420 format */ + + *u++ = U[Idx >>1]; + *v++ = V[Idx >>1]; + } + + } + else { + YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv); + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_GREY: + *f++ = Y[Idx]; + break; + case V4L2_PIX_FMT_RGB555: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); + *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); + break; + case V4L2_PIX_FMT_RGB565: + *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); + *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); + break; + case V4L2_PIX_FMT_RGB24: + *f++ = bv; + *f++ = gv; + *f++ = rv; + break; + case V4L2_PIX_FMT_RGB32: + *f++ = bv; + *f++ = gv; + *f++ = rv; + f++; + break; + } + } + clipmask_index++; + } + /* Deal with non-integer no. of bytes for YUV420P */ + if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 ) + *pcopylen += frame->v4l2_linesize; + else + *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1; + + frame->curline += 1; + + if (frame->curline >= frame->frmheight) { + return ParseState_NextFrame; + } + else { + return ParseState_Continue; + } + +} + + +/* + * usbvision_parse_lines_420() + * + * Parse two lines from the scratch buffer, put + * decoded RGB value into the current frame buffer and add the written + * number of bytes (RGB) to the *pcopylen. + * + */ +static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision, + long *pcopylen) +{ + struct usbvision_frame *frame; + unsigned char *f_even = NULL, *f_odd = NULL; + unsigned int pixel_per_line, block; + int pixel, block_split; + int y_ptr, u_ptr, v_ptr, y_odd_offset; + const int y_block_size = 128; + const int uv_block_size = 64; + const int sub_block_size = 32; + const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4; + const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4; + unsigned char y[2], u, v; /* YUV components */ + int y_, u_, v_, vb, uvg, ur; + int r_, g_, b_; /* RGB components */ + unsigned char g; + int clipmask_even_index, clipmask_odd_index, bytes_per_pixel; + int clipmask_add, stretch_bytes; + int overlay = usbvision->overlay; + + if (overlay) { + frame = &usbvision->overlay_frame; + if (usbvision->overlay_base == NULL) { + //video_buffer is not set yet + return ParseState_NextFrame; + } + f_even = usbvision->overlay_win + frame->curline * + usbvision->vid_buf.fmt.bytesperline; + f_odd = f_even + usbvision->vid_buf.fmt.bytesperline * usbvision->stretch_height; + } + else { + frame = &usbvision->frame[usbvision->curFrameNum]; + f_even = frame->data + (frame->v4l2_linesize * frame->curline); + f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height; + } + + /* Make sure there's enough data for the entire line */ + /* In this mode usbvision transfer 3 bytes for every 2 pixels */ + /* I need two lines to decode the color */ + bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; + stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; + clipmask_even_index = frame->curline * MAX_FRAME_WIDTH; + clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH; + clipmask_add = usbvision->stretch_width; + pixel_per_line = frame->isocHeader.frameWidth; + + if (scratch_len(usbvision) < (int)pixel_per_line * 3) { + //printk(KERN_DEBUG "out of data, need %d\n", len); + return ParseState_Out; + } + + if ((frame->curline + 1) >= frame->frmheight) { + return ParseState_NextFrame; + } + + block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines? + + y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size) + + block_split * uv_block_size; + + scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset); + scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size); + scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset + + (4 - block_split) * sub_block_size); + + for (block = 0; block < (pixel_per_line / sub_block_size); + block++) { + + + for (pixel = 0; pixel < sub_block_size; pixel +=2) { + scratch_get(usbvision, &y[0], 2); + scratch_get_extra(usbvision, &u, &u_ptr, 1); + scratch_get_extra(usbvision, &v, &v_ptr, 1); + + //I don't use the YUV_TO_RGB macro for better performance + v_ = v - 128; + u_ = u - 128; + vb = 132252 * v_; + uvg= -53281 * u_ - 25625 * v_; + ur = 104595 * u_; + + if((overlay) && (clipped_pixel(clipmask_even_index))) { + f_even += bytes_per_pixel; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f_even++ = y[0]; + *f_even++ = v; + } + else { + y_ = 76284 * (y[0] - 16); + + b_ = (y_ + vb) >> 16; + g_ = (y_ + uvg)>> 16; + r_ = (y_ + ur) >> 16; + + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); + *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_even++ = LIMIT_RGB(b_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(r_); + break; + case V4L2_PIX_FMT_RGB32: + *f_even++ = LIMIT_RGB(b_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(r_); + f_even++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); + *f_even++ = (0x03 & ( g >> 6)) | + (0x7C & (LIMIT_RGB(r_) >> 1)); + break; + } + } + clipmask_even_index += clipmask_add; + f_even += stretch_bytes; + + if((overlay) && (clipped_pixel(clipmask_even_index))) { + f_even += bytes_per_pixel; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f_even++ = y[1]; + *f_even++ = u; + } + else { + y_ = 76284 * (y[1] - 16); + + b_ = (y_ + vb) >> 16; + g_ = (y_ + uvg)>> 16; + r_ = (y_ + ur) >> 16; + + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); + *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_even++ = LIMIT_RGB(b_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(r_); + break; + case V4L2_PIX_FMT_RGB32: + *f_even++ = LIMIT_RGB(b_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(r_); + f_even++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); + *f_even++ = (0x03 & ( g >> 6)) | + (0x7C & (LIMIT_RGB(r_) >> 1)); + break; + } + } + clipmask_even_index += clipmask_add; + f_even += stretch_bytes; + + scratch_get_extra(usbvision, &y[0], &y_ptr, 2); + + if ((overlay) && (clipped_pixel(clipmask_odd_index))) { + f_odd += bytes_per_pixel; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f_odd++ = y[0]; + *f_odd++ = v; + } + else { + y_ = 76284 * (y[0] - 16); + + b_ = (y_ + vb) >> 16; + g_ = (y_ + uvg)>> 16; + r_ = (y_ + ur) >> 16; + + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); + *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_odd++ = LIMIT_RGB(b_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(r_); + break; + case V4L2_PIX_FMT_RGB32: + *f_odd++ = LIMIT_RGB(b_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(r_); + f_odd++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); + *f_odd++ = (0x03 & ( g >> 6)) | + (0x7C & (LIMIT_RGB(r_) >> 1)); + break; + } + } + clipmask_odd_index += clipmask_add; + f_odd += stretch_bytes; + + if((overlay) && (clipped_pixel(clipmask_odd_index))) { + f_odd += bytes_per_pixel; + } + else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { + *f_odd++ = y[1]; + *f_odd++ = u; + } + else { + y_ = 76284 * (y[1] - 16); + + b_ = (y_ + vb) >> 16; + g_ = (y_ + uvg)>> 16; + r_ = (y_ + ur) >> 16; + + switch (frame->v4l2_format.format) { + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); + *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_odd++ = LIMIT_RGB(b_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(r_); + break; + case V4L2_PIX_FMT_RGB32: + *f_odd++ = LIMIT_RGB(b_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(r_); + f_odd++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); + *f_odd++ = (0x03 & ( g >> 6)) | + (0x7C & (LIMIT_RGB(r_) >> 1)); + break; + } + } + clipmask_odd_index += clipmask_add; + f_odd += stretch_bytes; + } + + scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size); + scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size] + * sub_block_size); + scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size] + * sub_block_size); + scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size] + * sub_block_size); + } + + scratch_rm_old(usbvision, pixel_per_line * 3 / 2 + + block_split * sub_block_size); + + frame->curline += 2 * usbvision->stretch_height; + *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height; + + if (frame->curline >= frame->frmheight) + return ParseState_NextFrame; + else + return ParseState_Continue; +} + +/* + * usbvision_parse_data() + * + * Generic routine to parse the scratch buffer. It employs either + * usbvision_find_header() or usbvision_parse_lines() to do most + * of work. + * + */ +static void usbvision_parse_data(struct usb_usbvision *usbvision) +{ + struct usbvision_frame *frame; + enum ParseState newstate; + long copylen = 0; + + if (usbvision->overlay) { + frame = &usbvision->overlay_frame; + } + else { + frame = &usbvision->frame[usbvision->curFrameNum]; + } + + PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision)); + + + while (1) { + + newstate = ParseState_Out; + if (scratch_len(usbvision)) { + if (frame->scanstate == ScanState_Scanning) { + newstate = usbvision_find_header(usbvision); + } + else if (frame->scanstate == ScanState_Lines) { + if (usbvision->isocMode == ISOC_MODE_YUV420) { + newstate = usbvision_parse_lines_420(usbvision, ©len); + } + else if (usbvision->isocMode == ISOC_MODE_YUV422) { + newstate = usbvision_parse_lines_422(usbvision, ©len); + } + else if (usbvision->isocMode == ISOC_MODE_COMPRESS) { + newstate = usbvision_parse_compress(usbvision, ©len); + } + + } + } + if (newstate == ParseState_Continue) { + continue; + } + else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) { + break; + } + else { + return; /* ParseState_EndParse */ + } + } + + if (newstate == ParseState_NextFrame) { + frame->grabstate = FrameState_Done; + do_gettimeofday(&(frame->timestamp)); + frame->sequence = usbvision->frame_num; + if (usbvision->overlay) { + frame->grabstate = FrameState_Grabbing; + frame->scanstate = ScanState_Scanning; + frame->scanlength = 0; + copylen = 0; + } + else { + usbvision->curFrameNum = -1; + } + usbvision->frame_num++; + + /* Optionally display statistics on the screen */ + if (flags & FLAGS_OSD_STATS) + usbvision_osd_stats(usbvision, frame); + + /* This will cause the process to request another frame. */ + if (waitqueue_active(&frame->wq)) { + wake_up_interruptible(&frame->wq); + } + } + + /* Update the frame's uncompressed length. */ + frame->scanlength += copylen; +} + + +/* + * Make all of the blocks of data contiguous + */ +static int usbvision_compress_isochronous(struct usb_usbvision *usbvision, + struct urb *urb) +{ + unsigned char *packet_data; + int i, totlen = 0; + + for (i = 0; i < urb->number_of_packets; i++) { + int packet_len = urb->iso_frame_desc[i].actual_length; + int packet_stat = urb->iso_frame_desc[i].status; + + packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + + /* Detect and ignore errored packets */ + if (packet_stat) { // packet_stat != 0 ????????????? + PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat); + usbvision->isocErrCount++; + continue; + } + + /* Detect and ignore empty packets */ + if (packet_len < 0) { + PDEBUG(DBG_ISOC, "error packet [%d]", i); + usbvision->isocSkipCount++; + continue; + } + else if (packet_len == 0) { /* Frame end ????? */ + PDEBUG(DBG_ISOC, "null packet [%d]", i); + usbvision->isocstate=IsocState_NoFrame; + usbvision->isocSkipCount++; + continue; + } + else if (packet_len > usbvision->isocPacketSize) { + PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i); + usbvision->isocSkipCount++; + continue; + } + + PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len); + + if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins + usbvision->isocstate=IsocState_InFrame; + scratch_mark_header(usbvision); + usbvision_measure_bandwidth(usbvision); + PDEBUG(DBG_ISOC, "packet with header"); + } + + /* + * If usbvision continues to feed us with data but there is no + * consumption (if, for example, V4L client fell asleep) we + * may overflow the buffer. We have to move old data over to + * free room for new data. This is bad for old data. If we + * just drop new data then it's bad for new data... choose + * your favorite evil here. + */ + if (scratch_free(usbvision) < packet_len) { + + usbvision->scratch_ovf_count++; + PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d", + scratch_len(usbvision), packet_len); + scratch_rm_old(usbvision, packet_len - scratch_free(usbvision)); + } + + /* Now we know that there is enough room in scratch buffer */ + scratch_put(usbvision, packet_data, packet_len); + totlen += packet_len; + usbvision->isocDataCount += packet_len; + usbvision->isocPacketCount++; + } +#if ENABLE_HEXDUMP + if (totlen > 0) { + static int foo = 0; + if (foo < 1) { + printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen); + usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen); + ++foo; + } + } +#endif + return totlen; +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) +static void usbvision_isocIrq(struct urb *urb) +{ +#else +static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs) +{ + int errCode = 0; +#endif + int len; + struct usb_usbvision *usbvision = urb->context; + int i; + unsigned long startTime = jiffies; + + /* We don't want to do anything if we are about to be removed! */ + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return; + + if (!usbvision->streaming) { + PDEBUG(DBG_IRQ, "oops, not streaming, but interrupt"); + return; + } + + /* Copy the data received into our scratch buffer */ + len = usbvision_compress_isochronous(usbvision, urb); + + usbvision->isocUrbCount++; + usbvision->urb_length = len; + + for (i = 0; i < USBVISION_URB_FRAMES; i++) { + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = 0; + } +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) + urb->status = 0; + urb->dev = usbvision->dev; + errCode = usb_submit_urb (urb, GFP_ATOMIC); + +/* Disable this warning. By design of the driver. */ +// if(errCode) { +// err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode); +// } +#endif + + /* If we collected enough data let's parse! */ + if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */ + /*If we don't have a frame we're current working on, complain */ + if ((usbvision->curFrameNum >= 0) || (usbvision->overlay)) + usbvision_parse_data(usbvision); + else { + PDEBUG(DBG_IRQ, "received data, but no one needs it"); + scratch_reset(usbvision); + } + } + usbvision->timeInIrq += jiffies - startTime; + return; +} + +/*************************************/ +/* Low level usbvision access functions */ +/*************************************/ + +/* + * usbvision_read_reg() + * + * return < 0 -> Error + * >= 0 -> Data + */ + +static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg) +{ + int errCode = 0; + unsigned char buffer[1]; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return -1; + + errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, + 0, (__u16) reg, buffer, 1, HZ); + + if (errCode < 0) { + err("%s: failed: error %d", __FUNCTION__, errCode); + return errCode; + } + return buffer[0]; +} + +/* + * usbvision_write_reg() + * + * return 1 -> Reg written + * 0 -> usbvision is not yet ready + * -1 -> Something went wrong + */ + +static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, + unsigned char value) +{ + int errCode = 0; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ); + + if (errCode < 0) { + err("%s: failed: error %d", __FUNCTION__, errCode); + } + return errCode; +} + + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) +static void usbvision_ctrlUrb_complete(struct urb *urb) +#else +static void usbvision_ctrlUrb_complete(struct urb *urb, struct pt_regs *regs) +#endif +{ + struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context; + + PDEBUG(DBG_IRQ, ""); + usbvision->ctrlUrbBusy = 0; + if (waitqueue_active(&usbvision->ctrlUrb_wq)) { + wake_up_interruptible(&usbvision->ctrlUrb_wq); + } +} + + +static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address, + unsigned char *data, int len) +{ + int errCode = 0; + + PDEBUG(DBG_IRQ, ""); + if (len > 8) { + return -EFAULT; + } +// down(&usbvision->ctrlUrbLock); + if (usbvision->ctrlUrbBusy) { +// up(&usbvision->ctrlUrbLock); + return -EBUSY; + } + usbvision->ctrlUrbBusy = 1; +// up(&usbvision->ctrlUrbLock); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,20) + usbvision->ctrlUrbSetup.requesttype = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; + usbvision->ctrlUrbSetup.request = USBVISION_OP_CODE; + usbvision->ctrlUrbSetup.value = 0; + usbvision->ctrlUrbSetup.index = cpu_to_le16(address); + usbvision->ctrlUrbSetup.length = cpu_to_le16(len); +#else + usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; + usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE; + usbvision->ctrlUrbSetup.wValue = 0; + usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address); + usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len); +#endif + usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev, + usb_sndctrlpipe(usbvision->dev, 1), + (unsigned char *)&usbvision->ctrlUrbSetup, + (void *)usbvision->ctrlUrbBuffer, len, + usbvision_ctrlUrb_complete, + (void *)usbvision); + + memcpy(usbvision->ctrlUrbBuffer, data, len); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + errCode = usb_submit_urb(usbvision->ctrlUrb); +#else + errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC); +#endif + if (errCode < 0) { + // error in usb_submit_urb() + usbvision->ctrlUrbBusy = 0; + } + PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode); + return errCode; +} + + +#if 0 +static int usbvision_read_reg_irq(struct usb_usbvision *usbvision,int address, + unsigned char *data, int len) +{ + int errCode = 0; + + PDEBUG(DBG_IRQ, ""); + if (len > 8) { + return -EFAULT; + } + + down(&usbvision->ctrlUrbLock); + if (usbvision->ctrlUrbBusy) { + up(&usbvision->ctrlUrbLock); + return -EBUSY; + } + + usbvision->ctrlUrbBusy = 1; + up(&usbvision->ctrlUrbLock); + + usbvision->ctrlUrbSetup.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; + usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE; + usbvision->ctrlUrbSetup.wValue = 0; + usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address); + usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len); + + usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev, + usb_rcvctrlpipe(usbvision->dev, 1), + (unsigned char *)&usbvision->ctrlUrbSetup, + (void *)usbvision->ctrlUrbBuffer, len, + usbvision_ctrlUrb_complete, + (void *)usbvision); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + errCode = usb_submit_urb(usbvision->ctrlUrb); +#else + errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC); +#endif + if (errCode < 0) { + // error in usb_submit_urb() + usbvision->ctrlUrbBusy = 0; + } + else { + wait_event_interruptible(usbvision->ctrlUrb_wq, usbvision->ctrlUrbBusy == 0); + memcpy(data, usbvision->ctrlUrbBuffer, len); + } + + PDEBUG(DBG_IRQ, "read %d byte: error %d", len, errCode); + return errCode; +} +#endif + + +static int usbvision_init_compression(struct usb_usbvision *usbvision) +{ + int errCode = 0; + + usbvision->lastIsocFrameNum = -1; + usbvision->isocDataCount = 0; + usbvision->isocPacketCount = 0; + usbvision->isocSkipCount = 0; + usbvision->comprLevel = 50; + usbvision->lastComprLevel = -1; + usbvision->isocUrbCount = 0; + usbvision->requestIntra = 1; + usbvision->isocMeasureBandwidthCount = 0; + + return errCode; +} + +/* this function measures the used bandwidth since last call + * return: 0 : no error + * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize + */ +static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision) +{ + int errCode = 0; + + if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames + usbvision->isocMeasureBandwidthCount++; + return errCode; + } + if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) { + usbvision->usedBandwidth = usbvision->isocDataCount / + (usbvision->isocPacketCount + usbvision->isocSkipCount) * + 100 / usbvision->isocPacketSize; + } + usbvision->isocMeasureBandwidthCount = 0; + usbvision->isocDataCount = 0; + usbvision->isocPacketCount = 0; + usbvision->isocSkipCount = 0; + return errCode; +} + +static int usbvision_adjust_compression (struct usb_usbvision *usbvision) +{ + int errCode = 0; + unsigned char buffer[6]; + + PDEBUG(DBG_IRQ, ""); + if ((adjustCompression) && (usbvision->usedBandwidth > 0)) { + usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2; + RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100); + if (usbvision->comprLevel != usbvision->lastComprLevel) { + int distorsion; + if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) { + buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1 + buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2 + distorsion = 7 + 248 * usbvision->comprLevel / 100; + buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter) + buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra) + distorsion = 1 + 42 * usbvision->comprLevel / 100; + buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter) + buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra) + } + else { //BRIDGE_NT1003 + buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1 + buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2 + distorsion = 2 + 253 * usbvision->comprLevel / 100; + buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7 + buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11 + distorsion = 0 + 43 * usbvision->comprLevel / 100; + buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7 + buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8 + } + errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6); + if (errCode == 0){ + PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0], + buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]); + usbvision->lastComprLevel = usbvision->comprLevel; + } + } + } + return errCode; +} + +static int usbvision_request_intra (struct usb_usbvision *usbvision) +{ + int errCode = 0; + unsigned char buffer[1]; + + PDEBUG(DBG_IRQ, ""); + usbvision->requestIntra = 1; + buffer[0] = 1; + usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); + return errCode; +} + +static int usbvision_unrequest_intra (struct usb_usbvision *usbvision) +{ + int errCode = 0; + unsigned char buffer[1]; + + PDEBUG(DBG_IRQ, ""); + usbvision->requestIntra = 0; + buffer[0] = 0; + usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); + return errCode; +} + +/* ----------------------------------------------------------------------- */ +/* I2C functions */ +/* ----------------------------------------------------------------------- */ + +static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd, + void *arg) +{ +#if 0 // new version from bttv-if.c + if (0 != btv->i2c_rc) + return; + i2c_clients_command(&btv->i2c_adap, cmd, arg); +#endif + + int i; + + for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) { + if (NULL == usbvision->i2c_clients[i]) + continue; + if (NULL == usbvision->i2c_clients[i]->driver->command) + continue; + usbvision->i2c_clients[i]->driver->command(usbvision->i2c_clients[i], cmd, arg); + } +} + +static int attach_inform(struct i2c_client *client) +{ + struct usb_usbvision *usbvision; +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,12) + struct tuner_setup tun_addr; +#endif + int i; + v4l2_std_id stdId; + + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + usbvision = (struct usb_usbvision *)client->adapter->data; + #else + usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter); + #endif + + for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) { + if (usbvision->i2c_clients[i] == NULL || + usbvision->i2c_clients[i]->driver->id == + client->driver->id) { + usbvision->i2c_clients[i] = client; + break; + } + } +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11) + if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) { + tun_addr.mode_mask = T_ANALOG_TV; + tun_addr.type = usbvision->tuner_type; + tun_addr.addr = ADDR_UNSET; + client->driver->command(client,TUNER_SET_TYPE_ADDR, &tun_addr); + + call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->input.index); + } +#else + if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) { + + call_i2c_clients(usbvision, TUNER_SET_TYPE, &usbvision->tuner_type); + call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->input.index); + } +#endif + // FIXME : need to add a call VIDIOC_S_CTRL for each control +/* call_i2c_clients(usbvision, DECODER_SET_PICTURE, &usbvision->vpic); */ + stdId = usbvision->input.std; + call_i2c_clients(usbvision, VIDIOC_S_STD, &stdId); + + PDEBUG(DBG_I2C, "usbvision[%d] attaches %s", usbvision->nr, client->name); + + return 0; +} + +static int detach_inform(struct i2c_client *client) +{ + struct usb_usbvision *usbvision; + int i; + + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + usbvision = (struct usb_usbvision *)client->adapter->data; + #else + usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter); + #endif + + PDEBUG(DBG_I2C, "usbvision[%d] detaches %s", usbvision->nr, client->name); + for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) { + if (NULL != usbvision->i2c_clients[i] && + usbvision->i2c_clients[i]->driver->id == + client->driver->id) { + usbvision->i2c_clients[i] = NULL; + break; + } + } + return 0; +} + +static int +usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr, + char *buf, short len) +{ + int rc, retries; + + for (retries = 5;;) { + rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr); + if (rc < 0) + return rc; + + /* Initiate byte read cycle */ + /* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */ + /* d3 0=Wr 1=Rd */ + rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, + (len & 0x07) | 0x18); + if (rc < 0) + return rc; + + /* Test for Busy and ACK */ + do { + /* USBVISION_SER_CONT -> d4 == 0 busy */ + rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT); + } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */ + if (rc < 0) + return rc; + + /* USBVISION_SER_CONT -> d5 == 1 Not ack */ + if ((rc & 0x20) == 0) /* Ack? */ + break; + + /* I2C abort */ + rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00); + if (rc < 0) + return rc; + + if (--retries < 0) + return -1; + } + + switch (len) { + case 4: + buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4); + case 3: + buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3); + case 2: + buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2); + case 1: + buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1); + break; + default: + printk(KERN_ERR + "usbvision_i2c_read_max4: buffer length > 4\n"); + } + + if (debug & DBG_I2C) { + int idx; + for (idx = 0; idx < len; idx++) { + PDEBUG(DBG_I2C, "read %x from address %x", (unsigned char)buf[idx], addr); + } + } + return len; +} + + +static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision, + unsigned char addr, const char *buf, + short len) +{ + int rc, retries; + int i; + unsigned char value[6]; + unsigned char ser_cont; + + ser_cont = (len & 0x07) | 0x10; + + value[0] = addr; + value[1] = ser_cont; + for (i = 0; i < len; i++) + value[i + 2] = buf[i]; + + for (retries = 5;;) { + rc = usb_control_msg(usbvision->dev, + usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_SER_ADRS, value, + len + 2, HZ); + + if (rc < 0) + return rc; + + rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, + (len & 0x07) | 0x10); + if (rc < 0) + return rc; + + /* Test for Busy and ACK */ + do { + rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT); + } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */ + if (rc < 0) + return rc; + + if ((rc & 0x20) == 0) /* Ack? */ + break; + + /* I2C abort */ + usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00); + + if (--retries < 0) + return -1; + + } + + if (debug & DBG_I2C) { + int idx; + for (idx = 0; idx < len; idx++) { + PDEBUG(DBG_I2C, "wrote %x at address %x", (unsigned char)buf[idx], addr); + } + } + return len; +} + +static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, + short len) +{ + char *bufPtr = buf; + int retval; + int wrcount = 0; + int count; + int maxLen = 4; + struct usb_usbvision *usbvision = (struct usb_usbvision *) data; + + while (len > 0) { + count = (len > maxLen) ? maxLen : len; + retval = usbvision_i2c_write_max4(usbvision, addr, bufPtr, count); + if (retval > 0) { + len -= count; + bufPtr += count; + wrcount += count; + } else + return (retval < 0) ? retval : -EFAULT; + } + return wrcount; +} + +static int usbvision_i2c_read(void *data, unsigned char addr, char *buf, + short len) +{ + char temp[4]; + int retval, i; + int rdcount = 0; + int count; + struct usb_usbvision *usbvision = (struct usb_usbvision *) data; + + while (len > 0) { + count = (len > 3) ? 4 : len; + retval = usbvision_i2c_read_max4(usbvision, addr, temp, count); + if (retval > 0) { + for (i = 0; i < len; i++) + buf[rdcount + i] = temp[i]; + len -= count; + rdcount += count; + } else + return (retval < 0) ? retval : -EFAULT; + } + return rdcount; +} + +static struct i2c_algo_usb_data i2c_algo_template = { + .data = NULL, + .inb = usbvision_i2c_read, + .outb = usbvision_i2c_write, + .udelay = 10, + .mdelay = 10, + .timeout = 100, +}; + +static struct i2c_adapter i2c_adap_template = { +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31) + .owner = THIS_MODULE, +#endif + .name = "usbvision", + .id = I2C_HW_B_BT848, /* FIXME */ + .algo = NULL, + .algo_data = NULL, + .client_register = attach_inform, + .client_unregister = detach_inform, +#if defined (I2C_ADAP_CLASS_TV_ANALOG) + .class = I2C_ADAP_CLASS_TV_ANALOG, +#elif defined (I2C_CLASS_TV_ANALOG) + .class = I2C_CLASS_TV_ANALOG, +#endif +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + .data = NULL, +#endif +}; + +static struct i2c_client i2c_client_template = { + .name = "usbvision internal", +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 11) + .id = -1, +#endif + .flags = 0, + .addr = 0, + .adapter = NULL, + .driver = NULL, +}; + +static int usbvision_init_i2c(struct usb_usbvision *usbvision) +{ + memcpy(&usbvision->i2c_adap, &i2c_adap_template, + sizeof(struct i2c_adapter)); + memcpy(&usbvision->i2c_algo, &i2c_algo_template, + sizeof(struct i2c_algo_usb_data)); + memcpy(&usbvision->i2c_client, &i2c_client_template, + sizeof(struct i2c_client)); + + sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name), + " #%d", usbvision->vdev->minor & 0x1f); + PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name); + + i2c_set_adapdata(&usbvision->i2c_adap, usbvision); + i2c_set_clientdata(&usbvision->i2c_client, usbvision); + i2c_set_algo_usb_data(&usbvision->i2c_algo, usbvision); + + usbvision->i2c_adap.algo_data = &usbvision->i2c_algo; + usbvision->i2c_client.adapter = &usbvision->i2c_adap; + + if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) { + printk(KERN_ERR "usbvision_init_i2c: can't wirte reg\n"); + return -EBUSY; + } + +#ifdef CONFIG_KMOD + /* Request the load of the i2c modules we need */ + if (autoload) { + switch (usbvision_device_data[usbvision->DevModel].Codec) { + case CODEC_SAA7113: + request_module("saa7115"); + break; + case CODEC_SAA7111: + request_module("saa7115"); + break; + } + if (usbvision_device_data[usbvision->DevModel].Tuner == 1) { + request_module("tuner"); + } + } +#endif + + usbvision->i2c_ok = usbvision_i2c_usb_add_bus(&usbvision->i2c_adap); + + return usbvision->i2c_ok; + +} + + +/****************************/ +/* usbvision utility functions */ +/****************************/ + +static int usbvision_power_off(struct usb_usbvision *usbvision) +{ + int errCode = 0; + + PDEBUG(DBG_FUNC, ""); + + errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); + if (errCode == 1) { + usbvision->power = 0; + } + PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode); + return errCode; +} + + +// to call usbvision_power_off from task queue +static void call_usbvision_power_off(void *_usbvision) +{ + struct usb_usbvision *usbvision = _usbvision; + + PDEBUG(DBG_FUNC, ""); + down_interruptible(&usbvision->lock); + if(usbvision->user == 0) { + usbvision_i2c_usb_del_bus(&usbvision->i2c_adap); + usbvision_power_off(usbvision); + usbvision->initialized = 0; + } + up(&usbvision->lock); +} + + +/* + * usbvision_set_video_format() + * + */ +static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format) +{ + static const char proc[] = "usbvision_set_video_format"; + int rc; + unsigned char value[2]; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + PDEBUG(DBG_FUNC, "isocMode %#02x", format); + + if ((format != ISOC_MODE_YUV422) + && (format != ISOC_MODE_YUV420) + && (format != ISOC_MODE_COMPRESS)) { + printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420", + format); + format = ISOC_MODE_YUV420; + } + value[0] = 0x0A; //TODO: See the effect of the filter + value[1] = format; + rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_FILT_CONT, value, 2, HZ); + + if (rc < 0) { + printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - " + "reconnect or reload driver.\n", proc, rc); + } + usbvision->isocMode = format; + return rc; +} + +/* + * usbvision_set_output() + * + */ + +static int usbvision_set_output(struct usb_usbvision *usbvision, int width, + int height) +{ + int errCode = 0; + int UsbWidth, UsbHeight; + unsigned int frameRate=0, frameDrop=0; + unsigned char value[4]; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) { + return 0; + } + + if (width > MAX_USB_WIDTH) { + UsbWidth = width / 2; + usbvision->stretch_width = 2; + } + else { + UsbWidth = width; + usbvision->stretch_width = 1; + } + + if (height > MAX_USB_HEIGHT) { + UsbHeight = height / 2; + usbvision->stretch_height = 2; + } + else { + UsbHeight = height; + usbvision->stretch_height = 1; + } + + RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH); + UsbWidth &= ~(MIN_FRAME_WIDTH-1); + RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT); + UsbHeight &= ~(1); + + PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d", + UsbWidth, UsbHeight, width, height, + usbvision->stretch_width, usbvision->stretch_height); + + /* I'll not rewrite the same values */ + if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) { + value[0] = UsbWidth & 0xff; //LSB + value[1] = (UsbWidth >> 8) & 0x03; //MSB + value[2] = UsbHeight & 0xff; //LSB + value[3] = (UsbHeight >> 8) & 0x03; //MSB + + errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, + 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ); + + if (errCode < 0) { + err("%s failed: error %d", __FUNCTION__, errCode); + return errCode; + } + usbvision->curwidth = usbvision->stretch_width * UsbWidth; + usbvision->curheight = usbvision->stretch_height * UsbHeight; + } + + if (usbvision->isocMode == ISOC_MODE_YUV422) { + frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2); + } + else if (usbvision->isocMode == ISOC_MODE_YUV420) { + frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8); + } + else { + frameRate = FRAMERATE_MAX; + } + + if (usbvision->input.std & V4L2_STD_625_50) { + frameDrop = frameRate * 32 / 25 - 1; + } + else if (usbvision->input.std & V4L2_STD_525_60) { + frameDrop = frameRate * 32 / 30 - 1; + } + + RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX); + + PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop); + + frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled + + /* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ... + => frameSkip = 4; + => frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25; + + frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ... + => frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ... + => frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125; + */ + errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop); + return errCode; +} + + +/* + * usbvision_set_compress_params() + * + */ + +static int usbvision_set_compress_params(struct usb_usbvision *usbvision) +{ + static const char proc[] = "usbvision_set_compresion_params: "; + int rc; + unsigned char value[6]; + + value[0] = 0x0F; // Intra-Compression cycle + value[1] = 0x01; // Reg.45 one line per strip + value[2] = 0x00; // Reg.46 Force intra mode on all new frames + value[3] = 0x00; // Reg.47 FORCE_UP <- 0 normal operation (not force) + value[4] = 0xA2; // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode. + value[5] = 0x00; // Reg.49 DVI_YUV This has nothing to do with compression + + //catched values for NT1004 + // value[0] = 0xFF; // Never apply intra mode automatically + // value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip + // value[2] = 0x01; // Force intra mode on all new frames + // value[3] = 0x00; // Strip size 400 Bytes; do not force up + // value[4] = 0xA2; // + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_INTRA_CYC, value, 5, HZ); + + if (rc < 0) { + printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " + "reconnect or reload driver.\n", proc, rc); + return rc; + } + + if (usbvision->bridgeType == BRIDGE_NT1004) { + value[0] = 20; // PCM Threshold 1 + value[1] = 12; // PCM Threshold 2 + value[2] = 255; // Distorsion Threshold inter + value[3] = 255; // Distorsion Threshold intra + value[4] = 43; // Max Distorsion inter + value[5] = 43; // Max Distorsion intra + } + else { + value[0] = 20; // PCM Threshold 1 + value[1] = 12; // PCM Threshold 2 + value[2] = 255; // Distorsion Threshold d7-d0 + value[3] = 0; // Distorsion Threshold d11-d8 + value[4] = 43; // Max Distorsion d7-d0 + value[5] = 0; // Max Distorsion d8 + } + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_PCM_THR1, value, 6, HZ); + + if (rc < 0) { + printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " + "reconnect or reload driver.\n", proc, rc); + return rc; + } + + + return rc; +} + + +/* + * usbvision_set_input() + * + * Set the input (saa711x, ...) size x y and other misc input params + * I've no idea if this parameters are right + * + */ +static int usbvision_set_input(struct usb_usbvision *usbvision) +{ + static const char proc[] = "usbvision_set_input: "; + int rc; + unsigned char value[8]; + unsigned char dvi_yuv_value; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + /* Set input format expected from decoder*/ + if (usbvision_device_data[usbvision->DevModel].Vin_Reg1 >= 0) { + value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1 & 0xff; + } else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) { + /* SAA7113 uses 8 bit output */ + value[0] = USBVISION_8_422_SYNC; + } else { + /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses + * as that is how saa7111 is configured */ + value[0] = USBVISION_16_422_SYNC; + /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/ + } + + rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]); + if (rc < 0) { + printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " + "reconnect or reload driver.\n", proc, rc); + return rc; + } + + + if (usbvision->input.std & V4L2_STD_PAL) { + value[0] = 0xC0; + value[1] = 0x02; //0x02C0 -> 704 Input video line length + value[2] = 0x20; + value[3] = 0x01; //0x0120 -> 288 Input video n. of lines + value[4] = 0x60; + value[5] = 0x00; //0x0060 -> 96 Input video h offset + value[6] = 0x16; + value[7] = 0x00; //0x0016 -> 22 Input video v offset + } else if (usbvision->input.std & V4L2_STD_SECAM) { + value[0] = 0xC0; + value[1] = 0x02; //0x02C0 -> 704 Input video line length + value[2] = 0x20; + value[3] = 0x01; //0x0120 -> 288 Input video n. of lines + value[4] = 0x01; + value[5] = 0x00; //0x0001 -> 01 Input video h offset + value[6] = 0x01; + value[7] = 0x00; //0x0001 -> 01 Input video v offset + } else { /* V4L2_STD_NTSC */ + value[0] = 0xD0; + value[1] = 0x02; //0x02D0 -> 720 Input video line length + value[2] = 0xF0; + value[3] = 0x00; //0x00F0 -> 240 Input video number of lines + value[4] = 0x50; + value[5] = 0x00; //0x0050 -> 80 Input video h offset + value[6] = 0x10; + value[7] = 0x00; //0x0010 -> 16 Input video v offset + } + + if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) { + value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff; + value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8; + } + + if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) { + value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff; + value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8; + } + + rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, /* USBVISION specific code */ + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_LXSIZE_I, value, 8, HZ); + if (rc < 0) { + printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " + "reconnect or reload driver.\n", proc, rc); + return rc; + } + + + dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */ + + if(usbvision_device_data[usbvision->DevModel].Dvi_yuv >= 0){ + dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv & 0xff; + } + else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) { + /* This changes as the fine sync control changes. Further investigation necessary */ + dvi_yuv_value = 0x06; + } + + return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value)); +} + + +/* + * usbvision_set_dram_settings() + * + * Set the buffer address needed by the usbvision dram to operate + * This values has been taken with usbsnoop. + * + */ + +static int usbvision_set_dram_settings(struct usb_usbvision *usbvision) +{ + int rc; + unsigned char value[8]; + + if (usbvision->isocMode == ISOC_MODE_COMPRESS) { + value[0] = 0x42; + value[1] = 0x71; + value[2] = 0xff; + value[3] = 0x00; + value[4] = 0x98; + value[5] = 0xe0; + value[6] = 0x71; + value[7] = 0xff; + // UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte) + // FDL: 0x00000-0x0E099 = 57498 Words + // VDW: 0x0E3FF-0x3FFFF + } + else { + value[0] = 0x42; + value[1] = 0x00; + value[2] = 0xff; + value[3] = 0x00; + value[4] = 0x00; + value[5] = 0x00; + value[6] = 0x00; + value[7] = 0xff; + } + /* These are the values of the address of the video buffer, + * they have to be loaded into the USBVISION_DRM_PRM1-8 + * + * Start address of video output buffer for read: drm_prm1-2 -> 0x00000 + * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff + * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000 + * Only used in compressed mode + * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff + * Only used in compressed mode + * Start address of video output buffer for write: drm_prm1-7 -> 0x00000 + * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff + */ + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return 0; + + rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), + USBVISION_OP_CODE, /* USBVISION specific code */ + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_ENDPOINT, 0, + (__u16) USBVISION_DRM_PRM1, value, 8, HZ); + + if (rc < 0) { + err("%sERROR=%d", __FUNCTION__, rc); + return rc; + } + + /* Restart the video buffer logic */ + if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR | + USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0) + return rc; + rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00); + + return rc; +} + +/* + * () + * + * Power on the device, enables suspend-resume logic + * & reset the isoc End-Point + * + */ + +static int usbvision_power_on(struct usb_usbvision *usbvision) +{ + int errCode = 0; + + PDEBUG(DBG_FUNC, ""); + + usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); + usbvision_write_reg(usbvision, USBVISION_PWR_REG, + USBVISION_SSPND_EN | USBVISION_RES2); +#if 0 + /* Set input format expected from decoder, should this be moved to usbvision_set_input() ?? */ + if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) { + /* SAA7113 uses 8 bit output */ + usbvision_write_reg(usbvision, USBVISION_VIN_REG1, USBVISION_8_422_SYNC); + } else { + /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses + * as that is how saa7111 is configured */ + usbvision_write_reg(usbvision, USBVISION_VIN_REG1, USBVISION_16_422_SYNC); + /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/ + } +#endif + usbvision_write_reg(usbvision, USBVISION_PWR_REG, + USBVISION_SSPND_EN | USBVISION_PWR_VID); +#if 0 +#define ajblah(x) ((flags & (x)) ? #x : "") + printk(KERN_DEBUG "usbvision_power_on (%s,%s,%s,%s,%s,%s,%s)\n", + ajblah(FLAGS_RETRY_VIDIOCSYNC), + ajblah(FLAGS_MONOCHROME), + ajblah(FLAGS_DISPLAY_HINTS), + ajblah(FLAGS_OSD_STATS), + ajblah(FLAGS_FORCE_TESTPATTERN), + ajblah(FLAGS_SEPARATE_FRAMES), + ajblah(FLAGS_CLEAN_FRAMES)); +#endif + errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, + USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2); + if (errCode == 1) { + usbvision->power = 1; + } + PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode); + return errCode; +} + + +static void usbvision_powerOffTimer(unsigned long data) +{ + struct usb_usbvision *usbvision = (void *) data; + + PDEBUG(DBG_FUNC, ""); + del_timer(&usbvision->powerOffTimer); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + INIT_TQUEUE(&usbvision->powerOffTask, call_usbvision_power_off, usbvision); + (void) schedule_task(&usbvision->powerOffTask); +#else + INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off, usbvision); + (void) schedule_work(&usbvision->powerOffWork); +#endif + +} + + +/* + * usbvision_begin_streaming() + * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no + * idea about the rest + */ +static int usbvision_begin_streaming(struct usb_usbvision *usbvision) +{ + int errCode = 0; + + if (usbvision->isocMode == ISOC_MODE_COMPRESS) { + usbvision_init_compression(usbvision); + } + errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID | + usbvision->Vin_Reg2_Preset); + return errCode; +} + +/* + * usbvision_restart_isoc() + * Not sure yet if touching here PWR_REG make loose the config + */ + +static int usbvision_restart_isoc(struct usb_usbvision *usbvision) +{ + int ret; + + if ( + (ret = + usbvision_write_reg(usbvision, USBVISION_PWR_REG, + USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0) + return ret; + if ( + (ret = + usbvision_write_reg(usbvision, USBVISION_PWR_REG, + USBVISION_SSPND_EN | USBVISION_PWR_VID | + USBVISION_RES2)) < 0) + return ret; + if ( + (ret = + usbvision_write_reg(usbvision, USBVISION_VIN_REG2, + USBVISION_KEEP_BLANK | USBVISION_NOHVALID | + usbvision->Vin_Reg2_Preset)) < 0) return ret; + + /* TODO: schedule timeout */ + while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) && 0x01) != 1); + + return 0; +} + +static int usbvision_audio_on(struct usb_usbvision *usbvision) +{ + if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, usbvision->AudioChannel) < 0) { + printk(KERN_ERR "usbvision_audio_on: can't wirte reg\n"); + return -1; + } + DEBUG(printk(KERN_DEBUG "usbvision_audio_on: channel %d\n", usbvision->AudioChannel)); + usbvision->AudioMute = 0; + return 0; +} + +static int usbvision_audio_mute(struct usb_usbvision *usbvision) +{ + if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0x03) < 0) { + printk(KERN_ERR "usbvision_audio_mute: can't wirte reg\n"); + return -1; + } + DEBUG(printk(KERN_DEBUG "usbvision_audio_mute: audio mute\n")); + usbvision->AudioMute = 1; + return 0; +} + +static int usbvision_audio_off(struct usb_usbvision *usbvision) +{ + if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) { + printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n"); + return -1; + } + DEBUG(printk(KERN_DEBUG "usbvision_audio_off: audio off\n")); + usbvision->AudioMute = 0; + usbvision->AudioChannel = USBVISION_AUDIO_MUTE; + return 0; +} + +static int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel) +{ + if (!usbvision->AudioMute) { + if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) { + printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n"); + return -1; + } + } + DEBUG(printk(KERN_DEBUG "usbvision_set_audio: channel %d\n", AudioChannel)); + usbvision->AudioChannel = AudioChannel; + return 0; +} + +static int usbvision_setup(struct usb_usbvision *usbvision) +{ + usbvision_set_video_format(usbvision, isocMode); + usbvision_set_dram_settings(usbvision); + usbvision_set_compress_params(usbvision); + usbvision_set_input(usbvision); + usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT); + usbvision_restart_isoc(usbvision); + + /* cosas del PCM */ + return USBVISION_IS_OPERATIONAL(usbvision); +} + + +/* + * usbvision_init_isoc() + * + */ +static int usbvision_init_isoc(struct usb_usbvision *usbvision) +{ + struct usb_device *dev = usbvision->dev; + int bufIdx, errCode, regValue; + + if (!USBVISION_IS_OPERATIONAL(usbvision)) + return -EFAULT; + + usbvision->curFrameNum = -1; + scratch_reset(usbvision); + + /* Alternate interface 1 is is the biggest frame size */ + errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive); + if (errCode < 0) { + usbvision->last_error = errCode; + return -EBUSY; + } + + regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F; + usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1; + PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize); + + usbvision->usb_bandwidth = regValue >> 1; + PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth); + + + + /* We double buffer the Iso lists */ + + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { + int j, k; + struct urb *urb; + + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + urb = usb_alloc_urb(USBVISION_URB_FRAMES); + #else + urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); + #endif + if (urb == NULL) { + err("%s: usb_alloc_urb() failed", __FUNCTION__); + return -ENOMEM; + } + usbvision->sbuf[bufIdx].urb = urb; + urb->dev = dev; + urb->context = usbvision; + urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + urb->transfer_flags = USB_ISO_ASAP; + #else + urb->transfer_flags = URB_ISO_ASAP; + urb->interval = 1; + #endif + urb->transfer_buffer = usbvision->sbuf[bufIdx].data; + urb->complete = usbvision_isocIrq; + urb->number_of_packets = USBVISION_URB_FRAMES; + urb->transfer_buffer_length = + usbvision->isocPacketSize * USBVISION_URB_FRAMES; + for (j = k = 0; j < USBVISION_URB_FRAMES; j++, + k += usbvision->isocPacketSize) { + urb->iso_frame_desc[j].offset = k; + urb->iso_frame_desc[j].length = usbvision->isocPacketSize; + } + } + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + /* Link URBs into a ring so that they invoke each other infinitely */ + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { + if ((bufIdx + 1) < USBVISION_NUMSBUF) { + usbvision->sbuf[bufIdx].urb->next = usbvision->sbuf[bufIdx + 1].urb; + } + else { + usbvision->sbuf[bufIdx].urb->next = usbvision->sbuf[0].urb; + } + } +#endif + + /* Submit all URBs */ + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { + #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb); + #else + errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL); + #endif + if (errCode) { + err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode); + } + } + + usbvision->streaming = 1; + PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp); + return 0; +} + +/* + * usbvision_stop_isoc() + * + * This procedure stops streaming and deallocates URBs. Then it + * activates zero-bandwidth alt. setting of the video interface. + * + */ +static void usbvision_stop_isoc(struct usb_usbvision *usbvision) +{ + int bufIdx, errCode, regValue; + + if (!usbvision->streaming || (usbvision->dev == NULL)) + return; + + /* Unschedule all of the iso td's */ +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,9) + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { + usb_kill_urb(usbvision->sbuf[bufIdx].urb); + usb_free_urb(usbvision->sbuf[bufIdx].urb); + usbvision->sbuf[bufIdx].urb = NULL; + } +#else + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { + errCode = usb_unlink_urb(usbvision->sbuf[bufIdx].urb); + if (errCode < 0) + err("%s: usb_unlink_urb() failed: error %d", __FUNCTION__, errCode); + } + + /* Delete them all */ + for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) + usb_free_urb(usbvision->sbuf[bufIdx].urb); +#endif + + + PDEBUG(DBG_ISOC, "%s: streaming=0\n", __FUNCTION__); + usbvision->streaming = 0; + + + if (!usbvision->remove_pending) { + + /* Set packet size to 0 */ + errCode = usb_set_interface(usbvision->dev, usbvision->iface, + usbvision->ifaceAltInactive); + if (errCode < 0) { + err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode); + usbvision->last_error = errCode; + } + regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F; + usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1; + PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize); + + usbvision->usb_bandwidth = regValue >> 1; + PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth); + } +} + +/* + * usbvision_new_frame() + * + */ +static int usbvision_new_frame(struct usb_usbvision *usbvision, int framenum) +{ + struct usbvision_frame *frame; + int n; //byhec , width, height; + + /* If we're not grabbing a frame right now and the other frame is */ + /* ready to be grabbed into, then use it instead */ + if (usbvision->curFrameNum != -1) + return 0; + + n = (framenum - 1 + USBVISION_NUMFRAMES) % USBVISION_NUMFRAMES; + if (usbvision->frame[n].grabstate == FrameState_Ready) + framenum = n; + + frame = &usbvision->frame[framenum]; + + frame->grabstate = FrameState_Grabbing; + frame->scanstate = ScanState_Scanning; + frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */ + usbvision->curFrameNum = 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 (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 (!(flags & FLAGS_SEPARATE_FRAMES)) { + /* This copies previous frame into this one to mask losses */ + memmove(frame->data, usbvision->frame[1 - framenum].data, + MAX_FRAME_SIZE); + } else { + if (flags & FLAGS_CLEAN_FRAMES) { + /*This provides a "clean" frame but slows things down */ + memset(frame->data, 0, MAX_FRAME_SIZE); + } + } + return 0; +} + +static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel, int norm) +{ + int mode[4]; + int audio[]= {1, 0, 0, 0}; + struct v4l2_routing route; + //channel 0 is TV with audiochannel 1 (tuner mono) + //channel 1 is Composite with audio channel 0 (line in) + //channel 2 is S-Video with audio channel 0 (line in) + //channel 3 is additional video inputs to the device with audio channel 0 (line in) + + RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs); + /* set the new video norm */ + if (usbvision->input.std != norm) { + v4l2_std_id video_command = norm; + + route.input = SAA7115_COMPOSITE1; + call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route); + call_i2c_clients(usbvision, VIDIOC_S_STD, &video_command); + usbvision->input.std = norm; + call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->input.index); //set norm in tuner + } + + // set the new channel + // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video + // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red + + switch (usbvision_device_data[usbvision->DevModel].Codec) { + case CODEC_SAA7113: + if (SwitchSVideoInput) { // To handle problems with S-Video Input for some devices. Use SwitchSVideoInput parameter when loading the module. + mode[2] = 1; + } + else { + mode[2] = 7; + } + if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { + mode[0] = 0; mode[1] = 2; mode[3] = 3; // Special for four input devices + } + else { + mode[0] = 0; mode[1] = 2; //modes for regular saa7113 devices + } + break; + case CODEC_SAA7111: + mode[0] = 0; mode[1] = 1; mode[2] = 7; //modes for saa7111 + break; + default: + mode[0] = 0; mode[1] = 1; mode[2] = 7; //default modes + } + route.input = mode[channel]; + call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route); + usbvision->channel = channel; + usbvision_set_audio(usbvision, audio[channel]); + return 0; +} + + +/* + * usbvision_open() + * + * This is part of Video 4 Linux API. The driver can be opened by one + * client only (checks internal counter 'usbvision->user'). The procedure + * then allocates buffers needed for video processing. + * + */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19) +static int usbvision_v4l2_open(struct video_device *dev, int flags) +{ + struct usb_usbvision *usbvision = (struct usb_usbvision *) dev; +#else +static int usbvision_v4l2_open(struct inode *inode, struct file *file) +{ + struct video_device *dev = video_devdata(file); + struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev); +#endif + const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE; + int i, errCode = 0; + + PDEBUG(DBG_IO, "open"); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) + MOD_INC_USE_COUNT; +#endif + + if (timer_pending(&usbvision->powerOffTimer)) { + del_timer(&usbvision->powerOffTimer); + } + + if (usbvision->user) + errCode = -EBUSY; + else { + /* Clean pointers so we know if we allocated something */ + for (i = 0; i < USBVISION_NUMSBUF; i++) + usbvision->sbuf[i].data = NULL; + + /* Allocate memory for the frame buffers */ + usbvision->max_frame_size = MAX_FRAME_SIZE; + usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size; + usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size); + usbvision->scratch = vmalloc(scratch_buf_size); + scratch_reset(usbvision); + if ((usbvision->fbuf == NULL) || (usbvision->