Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 278 insertions, 0 deletions

diff --git a/drivers/usb/media/pwc/pwc.h b/drivers/usb/media/pwc/pwc.h
new file mode 100644
index 00000000000..53b516d29cf
--- /dev/null
+++ b/drivers/usb/media/pwc/pwc.h
@@ -0,0 +1,278 @@
+/* (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef PWC_H
+#define PWC_H
+
+#include <linux/version.h>
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/spinlock.h>
+#include <linux/videodev.h>
+#include <linux/wait.h>
+#include <linux/smp_lock.h>
+#include <asm/semaphore.h>
+#include <asm/errno.h>
+
+#include "pwc-uncompress.h"
+#include "pwc-ioctl.h"
+
+/* Defines and structures for the Philips webcam */
+/* Used for checking memory corruption/pointer validation */
+#define PWC_MAGIC 0x89DC10ABUL
+#undef PWC_MAGIC
+
+/* Turn some debugging options on/off */
+#define PWC_DEBUG 0
+
+/* Trace certain actions in the driver */
+#define TRACE_MODULE	0x0001
+#define TRACE_PROBE	0x0002
+#define TRACE_OPEN	0x0004
+#define TRACE_READ	0x0008
+#define TRACE_MEMORY	0x0010
+#define TRACE_FLOW	0x0020
+#define TRACE_SIZE	0x0040
+#define TRACE_PWCX	0x0080
+#define TRACE_SEQUENCE	0x1000
+
+#define Trace(R, A...) if (pwc_trace & R) printk(KERN_DEBUG PWC_NAME " " A)
+#define Debug(A...) printk(KERN_DEBUG PWC_NAME " " A)
+#define Info(A...)  printk(KERN_INFO  PWC_NAME " " A)
+#define Err(A...)   printk(KERN_ERR   PWC_NAME " " A)
+
+
+/* Defines for ToUCam cameras */
+#define TOUCAM_HEADER_SIZE		8
+#define TOUCAM_TRAILER_SIZE		4
+
+#define FEATURE_MOTOR_PANTILT		0x0001
+
+/* Version block */
+#define PWC_MAJOR	9
+#define PWC_MINOR	0
+#define PWC_VERSION 	"9.0.2-unofficial"
+#define PWC_NAME 	"pwc"
+
+/* Turn certain features on/off */
+#define PWC_INT_PIPE 0
+
+/* Ignore errors in the first N frames, to allow for startup delays */
+#define FRAME_LOWMARK 5
+
+/* Size and number of buffers for the ISO pipe. */
+#define MAX_ISO_BUFS		2
+#define ISO_FRAMES_PER_DESC	10
+#define ISO_MAX_FRAME_SIZE	960
+#define ISO_BUFFER_SIZE 	(ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+/* Frame buffers: contains compressed or uncompressed video data. */
+#define MAX_FRAMES		5
+/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
+#define PWC_FRAME_SIZE 		(460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
+
+/* Absolute maximum number of buffers available for mmap() */
+#define MAX_IMAGES 		10
+
+/* The following structures were based on cpia.h. Why reinvent the wheel? :-) */
+struct pwc_iso_buf
+{
+	void *data;
+	int  length;
+	int  read;
+	struct urb *urb;
+};
+
+/* intermediate buffers with raw data from the USB cam */
+struct pwc_frame_buf
+{
+   void *data;
+   volatile int filled;		/* number of bytes filled */
+   struct pwc_frame_buf *next;	/* list */
+#if PWC_DEBUG
+   int sequence;		/* Sequence number */
+#endif
+};
+
+struct pwc_device
+{
+   struct video_device *vdev;
+#ifdef PWC_MAGIC
+   int magic;
+#endif
+   /* Pointer to our usb_device */
+   struct usb_device *udev;
+   
+   int type;                    /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
+   int release;			/* release number */
+   int features;		/* feature bits */
+   char serial[30];		/* serial number (string) */
+   int error_status;		/* set when something goes wrong with the cam (unplugged, USB errors) */
+   int usb_init;		/* set when the cam has been initialized over USB */
+
+   /*** Video data ***/
+   int vopen;			/* flag */
+   int vendpoint;		/* video isoc endpoint */
+   int vcinterface;		/* video control interface */
+   int valternate;		/* alternate interface needed */
+   int vframes, vsize;		/* frames-per-second & size (see PSZ_*) */
+   int vpalette;		/* palette: 420P, RAW or RGBBAYER */
+   int vframe_count;		/* received frames */
+   int vframes_dumped; 		/* counter for dumped frames */
+   int vframes_error;		/* frames received in error */
+   int vmax_packet_size;	/* USB maxpacket size */
+   int vlast_packet_size;	/* for frame synchronisation */
+   int visoc_errors;		/* number of contiguous ISOC errors */
+   int vcompression;		/* desired compression factor */
+   int vbandlength;		/* compressed band length; 0 is uncompressed */
+   char vsnapshot;		/* snapshot mode */
+   char vsync;			/* used by isoc handler */
+   char vmirror;		/* for ToUCaM series */
+   
+   int cmd_len;
+   unsigned char cmd_buf[13];
+
+   /* The image acquisition requires 3 to 4 steps:
+      1. data is gathered in short packets from the USB controller
+      2. data is synchronized and packed into a frame buffer
+      3a. in case data is compressed, decompress it directly into image buffer
+      3b. in case data is uncompressed, copy into image buffer with viewport
+      4. data is transferred to the user process
+
+      Note that MAX_ISO_BUFS != MAX_FRAMES != MAX_IMAGES....
+      We have in effect a back-to-back-double-buffer system.
+    */
+   /* 1: isoc */
+   struct pwc_iso_buf sbuf[MAX_ISO_BUFS];
+   char iso_init;
+
+   /* 2: frame */
+   struct pwc_frame_buf *fbuf;	/* all frames */
+   struct pwc_frame_buf *empty_frames, *empty_frames_tail;	/* all empty frames */
+   struct pwc_frame_buf *full_frames, *full_frames_tail;	/* all filled frames */
+   struct pwc_frame_buf *fill_frame;	/* frame currently being filled */
+   struct pwc_frame_buf *read_frame;	/* frame currently read by user process */
+   int frame_header_size, frame_trailer_size;
+   int frame_size;
+   int frame_total_size; /* including header & trailer */
+   int drop_frames;
+#if PWC_DEBUG
+   int sequence;			/* Debugging aid */
+#endif
+
+   /* 3: decompression */
+   struct pwc_decompressor *decompressor;	/* function block with decompression routines */
+   void *decompress_data;		/* private data for decompression engine */
+
+   /* 4: image */
+   /* We have an 'image' and a 'view', where 'image' is the fixed-size image
+      as delivered by the camera, and 'view' is the size requested by the
+      program. The camera image is centered in this viewport, laced with
+      a gray or black border. view_min <= image <= view <= view_max;
+    */
+   int image_mask;			/* bitmask of supported sizes */
+   struct pwc_coord view_min, view_max;	/* minimum and maximum viewable sizes */
+   struct pwc_coord abs_max;            /* maximum supported size with compression */
+   struct pwc_coord image, view;	/* image and viewport size */
+   struct pwc_coord offset;		/* offset within the viewport */
+
+   void *image_data;			/* total buffer, which is subdivided into ... */
+   void *image_ptr[MAX_IMAGES];		/* ...several images... */
+   int fill_image;			/* ...which are rotated. */
+   int len_per_image;			/* length per image */
+   int image_read_pos;			/* In case we read data in pieces, keep track of were we are in the imagebuffer */
+   int image_used[MAX_IMAGES];		/* For MCAPTURE and SYNC */
+
+   struct semaphore modlock;		/* to prevent races in video_open(), etc */
+   spinlock_t ptrlock;			/* for manipulating the buffer pointers */
+
+   /*** motorized pan/tilt feature */
+   struct pwc_mpt_range angle_range;
+   int pan_angle;			/* in degrees * 100 */
+   int tilt_angle;			/* absolute angle; 0,0 is home position */
+
+   /*** Misc. data ***/
+   wait_queue_head_t frameq;		/* When waiting for a frame to finish... */
+#if PWC_INT_PIPE
+   void *usb_int_handler;		/* for the interrupt endpoint */
+#endif
+};
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Global variables */
+extern int pwc_trace;
+extern int pwc_preferred_compression;
+
+/** functions in pwc-if.c */
+int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot);
+
+/** Functions in pwc-misc.c */
+/* sizes in pixels */
+extern struct pwc_coord pwc_image_sizes[PSZ_MAX];
+
+int pwc_decode_size(struct pwc_device *pdev, int width, int height);
+void pwc_construct(struct pwc_device *pdev);
+
+/** Functions in pwc-ctrl.c */
+/* Request a certain video mode. Returns < 0 if not possible */
+extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
+/* Calculate the number of bytes per image (not frame) */
+extern void pwc_set_image_buffer_size(struct pwc_device *pdev);
+
+/* Various controls; should be obvious. Value 0..65535, or < 0 on error */
+extern int pwc_get_brightness(struct pwc_device *pdev);
+extern int pwc_set_brightness(struct pwc_device *pdev, int value);
+extern int pwc_get_contrast(struct pwc_device *pdev);
+extern int pwc_set_contrast(struct pwc_device *pdev, int value);
+extern int pwc_get_gamma(struct pwc_device *pdev);
+extern int pwc_set_gamma(struct pwc_device *pdev, int value);
+extern int pwc_get_saturation(struct pwc_device *pdev);
+extern int pwc_set_saturation(struct pwc_device *pdev, int value);
+extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
+extern int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value);
+extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
+
+/* Power down or up the camera; not supported by all models */
+extern int pwc_camera_power(struct pwc_device *pdev, int power);
+
+/* Private ioctl()s; see pwc-ioctl.h */
+extern int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg);
+
+
+/** pwc-uncompress.c */
+/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
+extern int pwc_decompress(struct pwc_device *pdev);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif