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!
diff --git a/drivers/usb/media/pwc/pwc.h b/drivers/usb/media/pwc/pwc.h
new file mode 100644
index 0000000..53b516d
--- /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