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383 lines
13 KiB
383 lines
13 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* (C) 1999-2003 Nemosoft Unv. |
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(C) 2004-2006 Luc Saillard ([email protected]) |
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NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx |
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driver and thus may have bugs that are not present in the original version. |
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Please send bug reports and support requests to <[email protected]>. |
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The decompression routines have been implemented by reverse-engineering the |
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Nemosoft binary pwcx module. Caveat emptor. |
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*/ |
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#ifndef PWC_H |
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#define PWC_H |
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#include <linux/module.h> |
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#include <linux/usb.h> |
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#include <linux/spinlock.h> |
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#include <linux/wait.h> |
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#include <linux/mutex.h> |
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#include <linux/mm.h> |
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#include <linux/slab.h> |
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#include <asm/errno.h> |
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#include <linux/videodev2.h> |
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#include <media/v4l2-common.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-ioctl.h> |
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#include <media/v4l2-ctrls.h> |
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#include <media/v4l2-fh.h> |
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#include <media/v4l2-event.h> |
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#include <media/videobuf2-v4l2.h> |
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#include <media/videobuf2-vmalloc.h> |
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#ifdef CONFIG_USB_PWC_INPUT_EVDEV |
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#include <linux/input.h> |
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#endif |
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#include "pwc-dec1.h" |
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#include "pwc-dec23.h" |
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/* Version block */ |
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#define PWC_VERSION "10.0.15" |
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#define PWC_NAME "pwc" |
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#define PFX PWC_NAME ": " |
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/* Trace certain actions in the driver */ |
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#define PWC_DEBUG_LEVEL_MODULE BIT(0) |
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#define PWC_DEBUG_LEVEL_PROBE BIT(1) |
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#define PWC_DEBUG_LEVEL_OPEN BIT(2) |
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#define PWC_DEBUG_LEVEL_READ BIT(3) |
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#define PWC_DEBUG_LEVEL_MEMORY BIT(4) |
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#define PWC_DEBUG_LEVEL_FLOW BIT(5) |
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#define PWC_DEBUG_LEVEL_SIZE BIT(6) |
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#define PWC_DEBUG_LEVEL_IOCTL BIT(7) |
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#define PWC_DEBUG_LEVEL_TRACE BIT(8) |
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#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args) |
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#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args) |
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#define PWC_DEBUG_OPEN(fmt, args...) PWC_DEBUG(OPEN, fmt, ##args) |
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#define PWC_DEBUG_READ(fmt, args...) PWC_DEBUG(READ, fmt, ##args) |
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#define PWC_DEBUG_MEMORY(fmt, args...) PWC_DEBUG(MEMORY, fmt, ##args) |
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#define PWC_DEBUG_FLOW(fmt, args...) PWC_DEBUG(FLOW, fmt, ##args) |
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#define PWC_DEBUG_SIZE(fmt, args...) PWC_DEBUG(SIZE, fmt, ##args) |
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#define PWC_DEBUG_IOCTL(fmt, args...) PWC_DEBUG(IOCTL, fmt, ##args) |
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#define PWC_DEBUG_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args) |
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#ifdef CONFIG_USB_PWC_DEBUG |
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#define PWC_DEBUG_LEVEL (PWC_DEBUG_LEVEL_MODULE) |
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#define PWC_DEBUG(level, fmt, args...) do {\ |
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if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \ |
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printk(KERN_DEBUG PFX fmt, ##args); \ |
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} while (0) |
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#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args) |
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#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args) |
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#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args) |
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#define PWC_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args) |
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#else /* if ! CONFIG_USB_PWC_DEBUG */ |
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#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args) |
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#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args) |
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#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args) |
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#define PWC_TRACE(fmt, args...) do { } while(0) |
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#define PWC_DEBUG(level, fmt, args...) do { } while(0) |
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#define pwc_trace 0 |
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#endif |
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/* Defines for ToUCam cameras */ |
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#define TOUCAM_HEADER_SIZE 8 |
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#define TOUCAM_TRAILER_SIZE 4 |
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#define FEATURE_MOTOR_PANTILT 0x0001 |
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#define FEATURE_CODEC1 0x0002 |
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#define FEATURE_CODEC2 0x0004 |
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#define MAX_WIDTH 640 |
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#define MAX_HEIGHT 480 |
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/* Ignore errors in the first N frames, to allow for startup delays */ |
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#define FRAME_LOWMARK 5 |
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/* Size and number of buffers for the ISO pipe. */ |
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#define MAX_ISO_BUFS 3 |
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#define ISO_FRAMES_PER_DESC 10 |
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#define ISO_MAX_FRAME_SIZE 960 |
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#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) |
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/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */ |
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#define PWC_FRAME_SIZE (460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE) |
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/* Absolute minimum and maximum number of buffers available for mmap() */ |
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#define MIN_FRAMES 2 |
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#define MAX_FRAMES 16 |
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/* Some macros to quickly find the type of a webcam */ |
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#define DEVICE_USE_CODEC1(x) ((x)<675) |
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#define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700) |
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#define DEVICE_USE_CODEC3(x) ((x)>=700) |
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#define DEVICE_USE_CODEC23(x) ((x)>=675) |
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/* Request types: video */ |
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#define SET_LUM_CTL 0x01 |
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#define GET_LUM_CTL 0x02 |
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#define SET_CHROM_CTL 0x03 |
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#define GET_CHROM_CTL 0x04 |
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#define SET_STATUS_CTL 0x05 |
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#define GET_STATUS_CTL 0x06 |
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#define SET_EP_STREAM_CTL 0x07 |
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#define GET_EP_STREAM_CTL 0x08 |
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#define GET_XX_CTL 0x09 |
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#define SET_XX_CTL 0x0A |
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#define GET_XY_CTL 0x0B |
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#define SET_XY_CTL 0x0C |
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#define SET_MPT_CTL 0x0D |
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#define GET_MPT_CTL 0x0E |
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/* Selectors for the Luminance controls [GS]ET_LUM_CTL */ |
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#define AGC_MODE_FORMATTER 0x2000 |
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#define PRESET_AGC_FORMATTER 0x2100 |
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#define SHUTTER_MODE_FORMATTER 0x2200 |
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#define PRESET_SHUTTER_FORMATTER 0x2300 |
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#define PRESET_CONTOUR_FORMATTER 0x2400 |
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#define AUTO_CONTOUR_FORMATTER 0x2500 |
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#define BACK_LIGHT_COMPENSATION_FORMATTER 0x2600 |
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#define CONTRAST_FORMATTER 0x2700 |
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#define DYNAMIC_NOISE_CONTROL_FORMATTER 0x2800 |
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#define FLICKERLESS_MODE_FORMATTER 0x2900 |
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#define AE_CONTROL_SPEED 0x2A00 |
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#define BRIGHTNESS_FORMATTER 0x2B00 |
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#define GAMMA_FORMATTER 0x2C00 |
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/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */ |
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#define WB_MODE_FORMATTER 0x1000 |
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#define AWB_CONTROL_SPEED_FORMATTER 0x1100 |
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#define AWB_CONTROL_DELAY_FORMATTER 0x1200 |
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#define PRESET_MANUAL_RED_GAIN_FORMATTER 0x1300 |
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#define PRESET_MANUAL_BLUE_GAIN_FORMATTER 0x1400 |
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#define COLOUR_MODE_FORMATTER 0x1500 |
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#define SATURATION_MODE_FORMATTER1 0x1600 |
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#define SATURATION_MODE_FORMATTER2 0x1700 |
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/* Selectors for the Status controls [GS]ET_STATUS_CTL */ |
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#define SAVE_USER_DEFAULTS_FORMATTER 0x0200 |
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#define RESTORE_USER_DEFAULTS_FORMATTER 0x0300 |
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#define RESTORE_FACTORY_DEFAULTS_FORMATTER 0x0400 |
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#define READ_AGC_FORMATTER 0x0500 |
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#define READ_SHUTTER_FORMATTER 0x0600 |
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#define READ_RED_GAIN_FORMATTER 0x0700 |
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#define READ_BLUE_GAIN_FORMATTER 0x0800 |
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/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */ |
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#define PT_RELATIVE_CONTROL_FORMATTER 0x01 |
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#define PT_RESET_CONTROL_FORMATTER 0x02 |
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#define PT_STATUS_FORMATTER 0x03 |
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/* Enumeration of image sizes */ |
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#define PSZ_SQCIF 0x00 |
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#define PSZ_QSIF 0x01 |
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#define PSZ_QCIF 0x02 |
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#define PSZ_SIF 0x03 |
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#define PSZ_CIF 0x04 |
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#define PSZ_VGA 0x05 |
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#define PSZ_MAX 6 |
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struct pwc_raw_frame { |
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__le16 type; /* type of the webcam */ |
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__le16 vbandlength; /* Size of 4 lines compressed (used by the |
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decompressor) */ |
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__u8 cmd[4]; /* the four byte of the command (in case of |
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nala, only the first 3 bytes is filled) */ |
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__u8 rawframe[]; /* frame_size = H / 4 * vbandlength */ |
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} __packed; |
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/* intermediate buffers with raw data from the USB cam */ |
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struct pwc_frame_buf |
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{ |
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/* common v4l buffer stuff -- must be first */ |
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struct vb2_v4l2_buffer vb; |
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struct list_head list; |
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void *data; |
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int filled; /* number of bytes filled */ |
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}; |
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struct pwc_device |
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{ |
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struct video_device vdev; |
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struct v4l2_device v4l2_dev; |
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/* videobuf2 queue and queued buffers list */ |
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struct vb2_queue vb_queue; |
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struct list_head queued_bufs; |
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spinlock_t queued_bufs_lock; /* Protects queued_bufs */ |
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/* If taking both locks vb_queue_lock must always be locked first! */ |
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struct mutex v4l2_lock; /* Protects everything else */ |
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struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ |
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/* Pointer to our usb_device, will be NULL after unplug */ |
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struct usb_device *udev; /* Both mutexes most be hold when setting! */ |
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/* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */ |
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int type; |
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int release; /* release number */ |
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int features; /* feature bits */ |
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/*** Video data ***/ |
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int vendpoint; /* video isoc endpoint */ |
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int vcinterface; /* video control interface */ |
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int valternate; /* alternate interface needed */ |
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int vframes; /* frames-per-second */ |
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int pixfmt; /* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */ |
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int vframe_count; /* received frames */ |
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int vmax_packet_size; /* USB maxpacket size */ |
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int vlast_packet_size; /* for frame synchronisation */ |
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int visoc_errors; /* number of contiguous ISOC errors */ |
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int vbandlength; /* compressed band length; 0 is uncompressed */ |
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char vsync; /* used by isoc handler */ |
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char vmirror; /* for ToUCaM series */ |
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char power_save; /* Do powersaving for this cam */ |
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unsigned char cmd_buf[13]; |
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unsigned char *ctrl_buf; |
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struct urb *urbs[MAX_ISO_BUFS]; |
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/* |
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* Frame currently being filled, this only gets touched by the |
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* isoc urb complete handler, and by stream start / stop since |
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* start / stop touch it before / after starting / killing the urbs |
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* no locking is needed around this |
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*/ |
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struct pwc_frame_buf *fill_buf; |
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int frame_header_size, frame_trailer_size; |
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int frame_size; |
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int frame_total_size; /* including header & trailer */ |
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int drop_frames; |
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union { /* private data for decompression engine */ |
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struct pwc_dec1_private dec1; |
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struct pwc_dec23_private dec23; |
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}; |
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/* |
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* We have an 'image' and a 'view', where 'image' is the fixed-size img |
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* as delivered by the camera, and 'view' is the size requested by the |
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* program. The camera image is centered in this viewport, laced with |
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* a gray or black border. view_min <= image <= view <= view_max; |
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*/ |
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int image_mask; /* supported sizes */ |
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int width, height; /* current resolution */ |
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#ifdef CONFIG_USB_PWC_INPUT_EVDEV |
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struct input_dev *button_dev; /* webcam snapshot button input */ |
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char button_phys[64]; |
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#endif |
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/* controls */ |
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struct v4l2_ctrl_handler ctrl_handler; |
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u16 saturation_fmt; |
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struct v4l2_ctrl *brightness; |
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struct v4l2_ctrl *contrast; |
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struct v4l2_ctrl *saturation; |
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struct v4l2_ctrl *gamma; |
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struct { |
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/* awb / red-blue balance cluster */ |
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struct v4l2_ctrl *auto_white_balance; |
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struct v4l2_ctrl *red_balance; |
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struct v4l2_ctrl *blue_balance; |
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/* usb ctrl transfers are slow, so we cache things */ |
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int color_bal_valid; |
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unsigned long last_color_bal_update; /* In jiffies */ |
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s32 last_red_balance; |
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s32 last_blue_balance; |
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}; |
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struct { |
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/* autogain / gain cluster */ |
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struct v4l2_ctrl *autogain; |
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struct v4l2_ctrl *gain; |
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int gain_valid; |
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unsigned long last_gain_update; /* In jiffies */ |
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s32 last_gain; |
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}; |
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struct { |
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/* exposure_auto / exposure cluster */ |
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struct v4l2_ctrl *exposure_auto; |
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struct v4l2_ctrl *exposure; |
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int exposure_valid; |
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unsigned long last_exposure_update; /* In jiffies */ |
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s32 last_exposure; |
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}; |
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struct v4l2_ctrl *colorfx; |
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struct { |
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/* autocontour/contour cluster */ |
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struct v4l2_ctrl *autocontour; |
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struct v4l2_ctrl *contour; |
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}; |
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struct v4l2_ctrl *backlight; |
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struct v4l2_ctrl *flicker; |
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struct v4l2_ctrl *noise_reduction; |
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struct v4l2_ctrl *save_user; |
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struct v4l2_ctrl *restore_user; |
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struct v4l2_ctrl *restore_factory; |
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struct v4l2_ctrl *awb_speed; |
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struct v4l2_ctrl *awb_delay; |
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struct { |
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/* motor control cluster */ |
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struct v4l2_ctrl *motor_pan; |
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struct v4l2_ctrl *motor_tilt; |
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struct v4l2_ctrl *motor_pan_reset; |
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struct v4l2_ctrl *motor_tilt_reset; |
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}; |
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/* CODEC3 models have both gain and exposure controlled by autogain */ |
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struct v4l2_ctrl *autogain_expo_cluster[3]; |
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}; |
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/* Global variables */ |
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#ifdef CONFIG_USB_PWC_DEBUG |
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extern int pwc_trace; |
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#endif |
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/** Functions in pwc-misc.c */ |
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/* sizes in pixels */ |
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extern const int pwc_image_sizes[PSZ_MAX][2]; |
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int pwc_get_size(struct pwc_device *pdev, int width, int height); |
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void pwc_construct(struct pwc_device *pdev); |
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/** Functions in pwc-ctrl.c */ |
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/* Request a certain video mode. Returns < 0 if not possible */ |
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extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, |
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int pixfmt, int frames, int *compression, int send_to_cam); |
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extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size); |
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extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value); |
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extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor); |
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extern int send_control_msg(struct pwc_device *pdev, |
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u8 request, u16 value, void *buf, int buflen); |
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/* Control get / set helpers */ |
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int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data); |
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int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data); |
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int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data); |
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#define pwc_set_s8_ctrl pwc_set_u8_ctrl |
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int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *dat); |
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int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data); |
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int pwc_button_ctrl(struct pwc_device *pdev, u16 value); |
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int pwc_init_controls(struct pwc_device *pdev); |
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/* Power down or up the camera; not supported by all models */ |
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extern void pwc_camera_power(struct pwc_device *pdev, int power); |
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extern const struct v4l2_ioctl_ops pwc_ioctl_ops; |
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/** pwc-uncompress.c */ |
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/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */ |
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int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf); |
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#endif
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