drivers/staging/easycap/easycap_settings.c

/******************************************************************************
*                                                                             *
*  easycap_settings.c                                                         *
*                                                                             *
******************************************************************************/
/*
 *
 *  Copyright (C) 2010 R.M. Thomas  <rmthomas@sciolus.org>
 *
 *
 *  This 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.
 *
 *  The software 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 software; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
*/
/*****************************************************************************/

#include "easycap.h"
#include "easycap_debug.h"

/*---------------------------------------------------------------------------*/
/*
 *  THE LEAST SIGNIFICANT BIT OF easycap_standard.mask HAS MEANING:
 *                         0 => 25 fps
 *                         1 => 30 fps
 */
/*---------------------------------------------------------------------------*/
const struct easycap_standard easycap_standard[] = {
{
.mask = 0x000F & PAL_BGHIN ,
.v4l2_standard = {
	.index = PAL_BGHIN,
	.id = (V4L2_STD_PAL_B | V4L2_STD_PAL_G | V4L2_STD_PAL_H | \
					V4L2_STD_PAL_I | V4L2_STD_PAL_N),
	.name = "PAL_BGHIN",
	.frameperiod = {1, 25},
	.framelines = 625,
	.reserved = {0, 0, 0, 0}
	}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & NTSC_N_443 ,
.v4l2_standard = {
	.index = NTSC_N_443,
	.id = V4L2_STD_UNKNOWN,
	.name = "NTSC_N_443",
	.frameperiod = {1, 25},
	.framelines = 480,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & PAL_Nc ,
.v4l2_standard = {
	.index = PAL_Nc,
	.id = V4L2_STD_PAL_Nc,
	.name = "PAL_Nc",
	.frameperiod = {1, 25},
	.framelines = 625,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & NTSC_N ,
.v4l2_standard = {
	.index = NTSC_N,
	.id = V4L2_STD_UNKNOWN,
	.name = "NTSC_N",
	.frameperiod = {1, 25},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & SECAM ,
.v4l2_standard = {
	.index = SECAM,
	.id = V4L2_STD_SECAM,
	.name = "SECAM",
	.frameperiod = {1, 25},
	.framelines = 625,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & NTSC_M ,
.v4l2_standard = {
	.index = NTSC_M,
	.id = V4L2_STD_NTSC_M,
	.name = "NTSC_M",
	.frameperiod = {1, 30},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & NTSC_M_JP ,
.v4l2_standard = {
	.index = NTSC_M_JP,
	.id = V4L2_STD_NTSC_M_JP,
	.name = "NTSC_M_JP",
	.frameperiod = {1, 30},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & PAL_60 ,
.v4l2_standard = {
	.index = PAL_60,
	.id = V4L2_STD_PAL_60,
	.name = "PAL_60",
	.frameperiod = {1, 30},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & NTSC_443 ,
.v4l2_standard = {
	.index = NTSC_443,
	.id = V4L2_STD_NTSC_443,
	.name = "NTSC_443",
	.frameperiod = {1, 30},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0x000F & PAL_M ,
.v4l2_standard = {
	.index = PAL_M,
	.id = V4L2_STD_PAL_M,
	.name = "PAL_M",
	.frameperiod = {1, 30},
	.framelines = 525,
	.reserved = {0, 0, 0, 0}
}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.mask = 0xFFFF
}
};
/*---------------------------------------------------------------------------*/
/*
 *  THE 16-BIT easycap_format.mask HAS MEANING:
 *    (least significant) BIT  0:     0 => PAL, 25 FPS;   1 => NTSC, 30 FPS
 *                        BITS 1-3:   RESERVED FOR DIFFERENTIATING STANDARDS
 *                        BITS 4-7:   NUMBER OF BYTES PER PIXEL
 *                        BIT  8:     0 => NATIVE BYTE ORDER;  1 => SWAPPED
 *                        BITS 9-10:  RESERVED FOR OTHER BYTE PERMUTATIONS
 *                        BIT 11:     0 => UNDECIMATED;  1 => DECIMATED
 *                        BIT 12:     0 => OFFER FRAMES; 1 => OFFER FIELDS
 *     (most significant) BITS 13-15: RESERVED FOR OTHER FIELD ORDER OPTIONS
 *  IT FOLLOWS THAT:
 *     bytesperpixel IS         ((0x00F0 & easycap_format.mask) >> 4)
 *     byteswaporder IS true IF (0 != (0x0100 & easycap_format.mask))
 *
 *     decimatepixel IS true IF (0 != (0x0800 & easycap_format.mask))
 *
 *       offerfields IS true IF (0 != (0x1000 & easycap_format.mask))
 */
/*---------------------------------------------------------------------------*/

struct easycap_format easycap_format[1 + SETTINGS_MANY];

int
fillin_formats(void)
{
int i, j, k, m, n;
__u32 width, height, pixelformat, bytesperline, sizeimage;
__u32 field, colorspace;
__u16 mask1, mask2, mask3, mask4;
char name1[32], name2[32], name3[32], name4[32];

for (i = 0, n = 0; i < STANDARD_MANY; i++) {
	mask1 = 0x0000;
	switch (i) {
	case PAL_BGHIN: {
		mask1 = PAL_BGHIN;
		strcpy(&name1[0], "PAL_BGHIN");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
		break;
	}
	case SECAM: {
		mask1 = SECAM;
		strcpy(&name1[0], "SECAM");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
		break;
	}
	case PAL_Nc: {
		mask1 = PAL_Nc;
		strcpy(&name1[0], "PAL_Nc");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
		break;
	}
	case PAL_60: {
		mask1 = PAL_60;
		strcpy(&name1[0], "PAL_60");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
		break;
	}
	case PAL_M: {
		mask1 = PAL_M;
		strcpy(&name1[0], "PAL_M");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
		break;
	}
	case NTSC_M: {
		mask1 = NTSC_M;
		strcpy(&name1[0], "NTSC_M");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
		break;
	}
	case NTSC_443: {
		mask1 = NTSC_443;
		strcpy(&name1[0], "NTSC_443");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
		break;
	}
	case NTSC_M_JP: {
		mask1 = NTSC_M_JP;
		strcpy(&name1[0], "NTSC_M_JP");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
		break;
	}
	case NTSC_N: {
		mask1 = NTSC_M;
		strcpy(&name1[0], "NTSC_N");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
		break;
	}
	case NTSC_N_443: {
		mask1 = NTSC_N_443;
		strcpy(&name1[0], "NTSC_N_443");
		colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
		break;
	}
	default:
		return -1;
	}

	for (j = 0; j < RESOLUTION_MANY; j++) {
		mask2 = 0x0000;
		switch (j) {
		case AT_720x576: {
			if (0x1 & mask1)
				continue;
			strcpy(&name2[0], "_AT_720x576");
			width = 720; height = 576; break;
		}
		case AT_704x576: {
			if (0x1 & mask1)
				continue;
			strcpy(&name2[0], "_AT_704x576");
			width = 704; height = 576; break;
		}
		case AT_640x480: {
			strcpy(&name2[0], "_AT_640x480");
			width = 640; height = 480; break;
		}
		case AT_720x480: {
			if (!(0x1 & mask1))
				continue;
			strcpy(&name2[0], "_AT_720x480");
			width = 720; height = 480; break;
		}
		case AT_360x288: {
			if (0x1 & mask1)
				continue;
			strcpy(&name2[0], "_AT_360x288");
			width = 360; height = 288; mask2 = 0x0800; break;
		}
		case AT_320x240: {
			strcpy(&name2[0], "_AT_320x240");
			width = 320; height = 240; mask2 = 0x0800; break;
		}
		case AT_360x240: {
			if (!(0x1 & mask1))
				continue;
			strcpy(&name2[0], "_AT_360x240");
			width = 360; height = 240; mask2 = 0x0800; break;
		}
		default:
			return -2;
		}

		for (k = 0; k < PIXELFORMAT_MANY; k++) {
			mask3 = 0x0000;
			switch (k) {
			case FMT_UYVY: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_UYVY));
				pixelformat = V4L2_PIX_FMT_UYVY;
				mask3 |= (0x02 << 4);
				break;
			}
			case FMT_YUY2: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_YUY2));
				pixelformat = V4L2_PIX_FMT_YUYV;
				mask3 |= (0x02 << 4);
				mask3 |= 0x0100;
				break;
			}
			case FMT_RGB24: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_RGB24));
				pixelformat = V4L2_PIX_FMT_RGB24;
				mask3 |= (0x03 << 4);
				break;
			}
			case FMT_RGB32: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_RGB32));
				pixelformat = V4L2_PIX_FMT_RGB32;
				mask3 |= (0x04 << 4);
				break;
			}
			case FMT_BGR24: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_BGR24));
				pixelformat = V4L2_PIX_FMT_BGR24;
				mask3 |= (0x03 << 4);
				mask3 |= 0x0100;
				break;
			}
			case FMT_BGR32: {
				strcpy(&name3[0], "_" STRINGIZE(FMT_BGR32));
				pixelformat = V4L2_PIX_FMT_BGR32;
				mask3 |= (0x04 << 4);
				mask3 |= 0x0100;
				break;
			}
			default:
				return -3;
			}
			bytesperline = width * ((mask3 & 0x00F0) >> 4);
			sizeimage =  bytesperline * height;

			for (m = 0; m < INTERLACE_MANY; m++) {
				mask4 = 0x0000;
				switch (m) {
				case FIELD_NONE: {
					strcpy(&name4[0], "-n");
					field = V4L2_FIELD_NONE;
					break;
				}
				case FIELD_INTERLACED: {
					strcpy(&name4[0], "-i");
					field = V4L2_FIELD_INTERLACED;
					break;
				}
				case FIELD_ALTERNATE: {
					strcpy(&name4[0], "-a");
					mask4 |= 0x1000;
					field = V4L2_FIELD_ALTERNATE;
					break;
				}
				default:
					return -4;
				}
				if (SETTINGS_MANY <= n)
					return -5;
				strcpy(&easycap_format[n].name[0], &name1[0]);
				strcat(&easycap_format[n].name[0], &name2[0]);
				strcat(&easycap_format[n].name[0], &name3[0]);
				strcat(&easycap_format[n].name[0], &name4[0]);
				easycap_format[n].mask = \
						mask1 | mask2 | mask3 | mask4;
				easycap_format[n].v4l2_format\
					.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
				easycap_format[n].v4l2_format\
					.fmt.pix.width = width;
				easycap_format[n].v4l2_format\
					.fmt.pix.height = height;
				easycap_format[n].v4l2_format\
					.fmt.pix.pixelformat = pixelformat;
				easycap_format[n].v4l2_format\
					.fmt.pix.field = field;
				easycap_format[n].v4l2_format\
					.fmt.pix.bytesperline = bytesperline;
				easycap_format[n].v4l2_format\
					.fmt.pix.sizeimage = sizeimage;
				easycap_format[n].v4l2_format\
					.fmt.pix.colorspace = colorspace;
				easycap_format[n].v4l2_format\
					.fmt.pix.priv = 0;
				n++;
			}
		}
	}
}
if ((1 + SETTINGS_MANY) <= n)
	return -6;
easycap_format[n].mask = 0xFFFF;
return n;
}
/*---------------------------------------------------------------------------*/
struct v4l2_queryctrl easycap_control[] = \
 {{
.id       = V4L2_CID_BRIGHTNESS,
.type     = V4L2_CTRL_TYPE_INTEGER,
.name     = "Brightness",
.minimum  = 0,
.maximum  = 255,
.step     =  1,
.default_value = SAA_0A_DEFAULT,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id       = V4L2_CID_CONTRAST,
.type     = V4L2_CTRL_TYPE_INTEGER,
.name     = "Contrast",
.minimum  = 0,
.maximum  = 255,
.step     =   1,
.default_value = SAA_0B_DEFAULT + 128,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id       = V4L2_CID_SATURATION,
.type     = V4L2_CTRL_TYPE_INTEGER,
.name     = "Saturation",
.minimum  = 0,
.maximum  = 255,
.step     =   1,
.default_value = SAA_0C_DEFAULT + 128,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id       = V4L2_CID_HUE,
.type     = V4L2_CTRL_TYPE_INTEGER,
.name     = "Hue",
.minimum  = 0,
.maximum  = 255,
.step     =   1,
.default_value = SAA_0D_DEFAULT + 128,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id       = V4L2_CID_AUDIO_VOLUME,
.type     = V4L2_CTRL_TYPE_INTEGER,
.name     = "Volume",
.minimum  = 0,
.maximum  = 31,
.step     =   1,
.default_value = 16,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id       = V4L2_CID_AUDIO_MUTE,
.type     = V4L2_CTRL_TYPE_BOOLEAN,
.name     = "Mute",
.default_value = true,
.flags    = 0,
.reserved = {0, 0}
},
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
{
.id = 0xFFFFFFFF
}
 };
/*****************************************************************************/