/* Driver for Philips webcam   Functions that send various control messages to the webcam, including   video modes.   (C) 1999-2003 Nemosoft Unv.   (C) 2004-2006 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>.   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*//*   Changes   2001/08/03  Alvarado   Added methods for changing white balance and                           red/green gains *//* Control functions for the cam; brightness, contrast, video mode, etc. */#ifdef __KERNEL__#include <asm/uaccess.h> #endif#include <asm/errno.h>#include <linux/version.h> #include "pwc.h"#include "pwc-ioctl.h"#include "pwc-uncompress.h"#include "pwc-kiara.h"#include "pwc-timon.h"#include "pwc-dec1.h"#include "pwc-dec23.h"/* Request types: video */#define SET_LUM_CTL			0x01#define GET_LUM_CTL			0x02#define SET_CHROM_CTL			0x03#define GET_CHROM_CTL			0x04#define SET_STATUS_CTL			0x05#define GET_STATUS_CTL			0x06#define SET_EP_STREAM_CTL		0x07#define GET_EP_STREAM_CTL		0x08#define GET_XX_CTL			0x09#define SET_XX_CTL			0x0A#define GET_XY_CTL			0x0B#define SET_XY_CTL			0x0C#define SET_MPT_CTL			0x0D#define GET_MPT_CTL			0x0E/* Selectors for the Luminance controls [GS]ET_LUM_CTL */#define AGC_MODE_FORMATTER			0x2000#define PRESET_AGC_FORMATTER			0x2100#define SHUTTER_MODE_FORMATTER			0x2200#define PRESET_SHUTTER_FORMATTER		0x2300#define PRESET_CONTOUR_FORMATTER		0x2400#define AUTO_CONTOUR_FORMATTER			0x2500#define BACK_LIGHT_COMPENSATION_FORMATTER	0x2600#define CONTRAST_FORMATTER			0x2700#define DYNAMIC_NOISE_CONTROL_FORMATTER		0x2800#define FLICKERLESS_MODE_FORMATTER		0x2900#define AE_CONTROL_SPEED			0x2A00#define BRIGHTNESS_FORMATTER			0x2B00#define GAMMA_FORMATTER				0x2C00/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */#define WB_MODE_FORMATTER			0x1000#define AWB_CONTROL_SPEED_FORMATTER		0x1100#define AWB_CONTROL_DELAY_FORMATTER		0x1200#define PRESET_MANUAL_RED_GAIN_FORMATTER	0x1300#define PRESET_MANUAL_BLUE_GAIN_FORMATTER	0x1400#define COLOUR_MODE_FORMATTER			0x1500#define SATURATION_MODE_FORMATTER1		0x1600#define SATURATION_MODE_FORMATTER2		0x1700/* Selectors for the Status controls [GS]ET_STATUS_CTL */#define SAVE_USER_DEFAULTS_FORMATTER		0x0200#define RESTORE_USER_DEFAULTS_FORMATTER		0x0300#define RESTORE_FACTORY_DEFAULTS_FORMATTER	0x0400#define READ_AGC_FORMATTER			0x0500#define READ_SHUTTER_FORMATTER			0x0600#define READ_RED_GAIN_FORMATTER			0x0700#define READ_BLUE_GAIN_FORMATTER		0x0800#define GET_STATUS_B00				0x0B00#define SENSOR_TYPE_FORMATTER1			0x0C00#define GET_STATUS_3000				0x3000#define READ_RAW_Y_MEAN_FORMATTER		0x3100#define SET_POWER_SAVE_MODE_FORMATTER		0x3200#define MIRROR_IMAGE_FORMATTER			0x3300#define LED_FORMATTER				0x3400#define LOWLIGHT				0x3500#define GET_STATUS_3600				0x3600#define SENSOR_TYPE_FORMATTER2			0x3700#define GET_STATUS_3800				0x3800#define GET_STATUS_4000				0x4000#define GET_STATUS_4100				0x4100	/* Get */#define CTL_STATUS_4200				0x4200	/* [GS] 1 *//* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */#define VIDEO_OUTPUT_CONTROL_FORMATTER		0x0100/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */#define PT_RELATIVE_CONTROL_FORMATTER		0x01#define PT_RESET_CONTROL_FORMATTER		0x02#define PT_STATUS_FORMATTER			0x03static const char *size2name[PSZ_MAX] ={	"subQCIF",	"QSIF",	"QCIF",	"SIF",	"CIF",	"VGA",};  /********//* Entries for the Nala (645/646) camera; the Nala doesn't have compression    preferences, so you either get compressed or non-compressed streams.      An alternate value of 0 means this mode is not available at all. */struct Nala_table_entry {	char alternate;			/* USB alternate setting */	int compressed;			/* Compressed yes/no */	unsigned char mode[3];		/* precomputed mode table */};static struct Nala_table_entry Nala_table[PSZ_MAX][8] ={#include "pwc-nala.h"};static void pwc_set_image_buffer_size(struct pwc_device *pdev);/****************************************************************************/#define SendControlMsg(request, value, buflen) \	usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), \		request, \		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \		value, \		pdev->vcinterface, \		&buf, buflen, 500)#define RecvControlMsg(request, value, buflen) \	usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), \		request, \		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \		value, \		pdev->vcinterface, \		&buf, buflen, 500)static int send_video_command(struct usb_device *udev, int index, void *buf, int buflen){	return usb_control_msg(udev,		usb_sndctrlpipe(udev, 0),		SET_EP_STREAM_CTL,		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,		VIDEO_OUTPUT_CONTROL_FORMATTER,		index,		buf, buflen, 1000);}static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames){	unsigned char buf[3];	int ret, fps;	struct Nala_table_entry *pEntry;	int frames2frames[31] =	{ /* closest match of framerate */	   0,  0,  0,  0,  4,  /*  0-4  */	   5,  5,  7,  7, 10,  /*  5-9  */          10, 10, 12, 12, 15,  /* 10-14 */          15, 15, 15, 20, 20,  /* 15-19 */          20, 20, 20, 24, 24,  /* 20-24 */          24, 24, 24, 24, 24,  /* 25-29 */          24                   /* 30    */	};	int frames2table[31] = 	{ 0, 0, 0, 0, 0, /*  0-4  */	  1, 1, 1, 2, 2, /*  5-9  */	  3, 3, 4, 4, 4, /* 10-14 */	  5, 5, 5, 5, 5, /* 15-19 */	  6, 6, 6, 6, 7, /* 20-24 */	  7, 7, 7, 7, 7, /* 25-29 */	  7              /* 30    */	};		if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)		return -EINVAL;	frames = frames2frames[frames];	fps = frames2table[frames];	pEntry = &Nala_table[size][fps];	if (pEntry->alternate == 0)		return -EINVAL;	memcpy(buf, pEntry->mode, 3);		ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);	if (ret < 0) {		PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);		return ret;	}	if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW)		pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data); 	pdev->cmd_len = 3;	memcpy(pdev->cmd_buf, buf, 3);	/* Set various parameters */	pdev->vframes = frames;	pdev->vsize = size;	pdev->valternate = pEntry->alternate;	pdev->image = pwc_image_sizes[size];	pdev->frame_size = (pdev->image.x * pdev->image.y * 3) / 2;	if (pEntry->compressed) {		if (pdev->release < 5) { /* 4 fold compression */			pdev->vbandlength = 528;			pdev->frame_size /= 4;		}		else {			pdev->vbandlength = 704;			pdev->frame_size /= 3;		}	}	else		pdev->vbandlength = 0;	return 0;}static int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, int compression, int snapshot){	unsigned char buf[13];	const struct Timon_table_entry *pChoose;	int ret, fps;	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)		return -EINVAL;	if (size == PSZ_VGA && frames > 15)		return -EINVAL;	fps = (frames / 5) - 1;	/* Find a supported framerate with progressively higher compression ratios	   if the preferred ratio is not available.	*/	pChoose = NULL;	while (compression <= 3) {	   pChoose = &Timon_table[size][fps][compression];	   if (pChoose->alternate != 0)	     break;	   compression++;	}	if (pChoose == NULL || pChoose->alternate == 0)		return -ENOENT; /* Not supported. */	memcpy(buf, pChoose->mode, 13);	if (snapshot)		buf[0] |= 0x80;	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 13);	if (ret < 0)		return ret;	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)		pwc_dec23_init(pdev, pdev->type, buf);	pdev->cmd_len = 13;	memcpy(pdev->cmd_buf, buf, 13);	/* Set various parameters */	pdev->vframes = frames;	pdev->vsize = size;	pdev->vsnapshot = snapshot;	pdev->valternate = pChoose->alternate;	pdev->image = pwc_image_sizes[size];	pdev->vbandlength = pChoose->bandlength;	if (pChoose->bandlength > 0)		pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;	else		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;	return 0;}static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot){	const struct Kiara_table_entry *pChoose = NULL;	int fps, ret;	unsigned char buf[12];	struct Kiara_table_entry RawEntry = {6, 773, 1272, {0xAD, 0xF4, 0x10, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}};	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)		return -EINVAL;	if (size == PSZ_VGA && frames > 15)		return -EINVAL;	fps = (frames / 5) - 1;	/* special case: VGA @ 5 fps and snapshot is raw bayer mode */	if (size == PSZ_VGA && frames == 5 && snapshot && pdev->vpalette == VIDEO_PALETTE_RAW)	{		/* Only available in case the raw palette is selected or 		   we have the decompressor available. This mode is 		   only available in compressed form 		*/		PWC_DEBUG_SIZE("Choosing VGA/5 BAYER mode.\n");		pChoose = &RawEntry;	}	else	{        	/* Find a supported framerate with progressively higher compression ratios		   if the preferred ratio is not available.                   Skip this step when using RAW modes.		*/		snapshot = 0;		while (compression <= 3) {			pChoose = &Kiara_table[size][fps][compression];			if (pChoose->alternate != 0)				break;			compression++;		}	}	if (pChoose == NULL || pChoose->alternate == 0)		return -ENOENT; /* Not supported. */	PWC_TRACE("Using alternate setting %d.\n", pChoose->alternate);		/* usb_control_msg won't take staticly allocated arrays as argument?? */	memcpy(buf, pChoose->mode, 12);	if (snapshot)		buf[0] |= 0x80;	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */	ret = send_video_command(pdev->udev, 4 /* pdev->vendpoint */, buf, 12);	if (ret < 0)		return ret;	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)		pwc_dec23_init(pdev, pdev->type, buf);	pdev->cmd_len = 12;	memcpy(pdev->cmd_buf, buf, 12);	/* All set and go */	pdev->vframes = frames;	pdev->vsize = size;	pdev->vsnapshot = snapshot;	pdev->valternate = pChoose->alternate;	pdev->image = pwc_image_sizes[size];	pdev->vbandlength = pChoose->bandlength;	if (pdev->vbandlength > 0)		pdev->frame_size = (pdev->vbandlength * pdev->image.y) / 4;	else		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;	PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vsnapshot=%d, vbandlength=%d\n",	    pdev->frame_size,pdev->vframes,pdev->vsize,pdev->vsnapshot,pdev->vbandlength);	return 0;}/**   @pdev: device structure   @width: viewport width   @height: viewport height   @frame: framerate, in fps   @compression: preferred compression ratio   @snapshot: snapshot mode or streaming */int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot){        int ret, size;        PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, palette %d).\n", width, height, frames, pdev->vpalette);	size = pwc_decode_size(pdev, width, height);	if (size < 0) {		PWC_DEBUG_MODULE("Could not find suitable size.\n");		return -ERANGE;	}	PWC_TRACE("decode_size = %d.\n", size);	if (DEVICE_USE_CODEC1(pdev->type)) {		ret = set_video_mode_Nala(pdev, size, frames);			} else if (DEVICE_USE_CODEC3(pdev->type)) {		ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);	} else {		ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);	}	if (ret < 0) {		PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);		return ret;	}	pdev->view.x = width;	pdev->view.y = height;	pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;	pwc_set_image_buffer_size(pdev);	PWC_DEBUG_SIZE("Set viewport to %dx%d, image size is %dx%d.\n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y);	return 0;}#define BLACK_Y 0#define BLACK_U 128#define BLACK_V 128static void pwc_set_image_buffer_size(struct pwc_device *pdev){	int i, factor = 0;	/* for PALETTE_YUV420P */	switch(pdev->vpalette)	{	case VIDEO_PALETTE_YUV420P:		factor = 6;		break;	case VIDEO_PALETTE_RAW:		factor = 6; /* can be uncompressed YUV420P */		break;	}	/* Set sizes in bytes */	pdev->image.size = pdev->image.x * pdev->image.y * factor / 4;	pdev->view.size  = pdev->view.x  * pdev->view.y  * factor / 4;	/* Align offset, or you'll get some very weird results in	   YUV420 mode... x must be multiple of 4 (to get the Y's in	   place), and y even (or you'll mixup U & V). This is less of a	   problem for YUV420P.	 */	pdev->offset.x = ((pdev->view.x - pdev->image.x) / 2) & 0xFFFC;	pdev->offset.y = ((pdev->view.y - pdev->image.y) / 2) & 0xFFFE;	/* Fill buffers with black colors */	for (i = 0; i < pwc_mbufs; i++) {		unsigned char *p = pdev->image_data + pdev->images[i].offset;		memset(p, BLACK_Y, pdev->view.x * pdev->view.y);		p += pdev->view.x * pdev->view.y;		memset(p, BLACK_U, pdev->view.x * pdev->view.y/4);		p += pdev->view.x * pdev->view.y/4;		memset(p, BLACK_V, pdev->view.x * pdev->view.y/4);	}}/* BRIGHTNESS */int pwc_get_brightness(struct pwc_device *pdev){	char buf;	int ret;	ret = RecvControlMsg(GET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);		if (ret < 0)		return ret;	return buf;}int pwc_set_brightness(struct pwc_device *pdev, int value){	char buf;	if (value < 0)		value = 0;	if (value > 0xffff)		value = 0xffff;	buf = (value >> 9) & 0x7f;	return SendControlMsg(SET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);}/* CONTRAST */int pwc_get_contrast(struct pwc_device *pdev){	char buf;	int ret;	ret = RecvControlMsg(GET_LUM_CTL, CONTRAST_FORMATTER, 1);	if (ret < 0)		return ret;	return buf;}int pwc_set_contrast(struct pwc_device *pdev, int value){	char buf;	if (value < 0)		value = 0;	if (value > 0xffff)		value = 0xffff;	buf = (value >> 10) & 0x3f;	return SendControlMsg(SET_LUM_CTL, CONTRAST_FORMATTER, 1);}/* GAMMA */int pwc_get_gamma(struct pwc_device *pdev){	char buf;	int ret;		ret = RecvControlMsg(GET_LUM_CTL, GAMMA_FORMATTER, 1);	if (ret < 0)		return ret;	return buf;}int pwc_set_gamma(struct pwc_device *pdev, int value){	char buf;	if (value < 0)		value = 0;	if (value > 0xffff)		value = 0xffff;	buf = (value >> 11) & 0x1f;	return SendControlMsg(SET_LUM_CTL, GAMMA_FORMATTER, 1);}