/* Driver for Philips webcam Functions that send various control messages to the webcam, including video modes. (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 . 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 . 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 #endif #include #include #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 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 SENSOR_TYPE_FORMATTER1 0x0C00 #define READ_RAW_Y_MEAN_FORMATTER 0x3100 #define SET_POWER_SAVE_MODE_FORMATTER 0x3200 #define MIRROR_IMAGE_FORMATTER 0x3300 #define LED_FORMATTER 0x3400 #define SENSOR_TYPE_FORMATTER2 0x3700 /* 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 0x03 static 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" }; /****************************************************************************/ #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, HZ / 2) #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, HZ / 2) #if PWC_DEBUG void pwc_hexdump(void *p, int len) { int i; unsigned char *s; char buf[100], *d; s = (unsigned char *)p; d = buf; *d = '\0'; Debug("Doing hexdump @ %p, %d bytes.\n", p, len); for (i = 0; i < len; i++) { d += sprintf(d, "%02X ", *s++); if ((i & 0xF) == 0xF) { Debug("%s\n", buf); d = buf; *d = '\0'; } } if ((i & 0xF) != 0) Debug("%s\n", buf); } #endif static inline 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, HZ); } static inline 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; if (pEntry->compressed) return -ENOENT; /* Not supported. */ memcpy(buf, pEntry->mode, 3); ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3); if (ret < 0) { Debug("Failed to send video command... %d\n", ret); return ret; } if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW) { switch(pdev->type) { case 645: case 646: pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data); break; case 675: case 680: case 690: case 720: case 730: case 740: case 750: pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data); break; } } 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 inline 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->type, pdev->release, buf, pdev->decompress_data); 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 inline int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot) { const struct Kiara_table_entry *pChoose = 0; 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) { /* Only available in case the raw palette is selected or we have the decompressor available. This mode is only available in compressed form */ if (pdev->vpalette == VIDEO_PALETTE_RAW) { Info("Choosing VGA/5 BAYER mode (%d).\n", pdev->vpalette); pChoose = &RawEntry; } else { Info("VGA/5 BAYER mode _must_ have a decompressor available, or use RAW palette.\n"); } } else { /* Find a supported framerate with progressively higher compression ratios if the preferred ratio is not available. Skip this step when using RAW modes. */ 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. */ Debug("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->type, pdev->release, buf, pdev->decompress_data); 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; 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; Trace(TRACE_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) { Debug("Could not find suitable size.\n"); return -ERANGE; } Debug("decode_size = %d.\n", size); ret = -EINVAL; switch(pdev->type) { case 645: case 646: ret = set_video_mode_Nala(pdev, size, frames); break; case 675: case 680: case 690: ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot); break; case 720: case 730: case 740: case 750: ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot); break; } if (ret < 0) { if (ret == -ENOENT) Info("Video mode %s@%d fps is only supported with the decompressor module (pwcx).\n", size2name[size], frames); else { Err("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); Trace(TRACE_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; } void pwc_set_image_buffer_size(struct pwc_device *pdev) { int i, factor = 0, filler = 0; /* for PALETTE_YUV420P */ switch(pdev->vpalette) { case VIDEO_PALETTE_YUV420P: factor = 6; filler = 128; break; case VIDEO_PALETTE_RAW: factor = 6; /* can be uncompressed YUV420P */ filler = 0; 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 gray or black */ for (i = 0; i < MAX_IMAGES; i++) { if (pdev->image_ptr[i] != NULL) memset(pdev->image_ptr[i], filler, pdev->view.size); } } /* 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 << 9; } 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 << 10; } 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 << 11; } 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); } /* SATURATION */ int pwc_get_saturation(struct pwc_device *pdev) { char buf; int ret; if (pdev->type < 675) return -1; ret = RecvControlMsg(GET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1); if (ret < 0) return ret; return 32768 + buf * 327; } int pwc_set_saturation(struct pwc_device *pdev, int value) { char buf; if (pdev->type < 675) return -EINVAL; if (value < 0) value = 0; if (value > 0xffff) value = 0xffff; /* saturation ranges from -100 to +100 */ buf = (value - 32768) / 327; return SendControlMsg(SET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1); } /* AGC */ static inline int pwc_set_agc(struct pwc_device *pdev, int mode, int value) { char buf; int ret; if (mode) buf = 0x0; /* auto */ else buf = 0xff; /* fixed */ ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1); if (!mode && ret >= 0) { if (value < 0) value = 0; if (value > 0xffff) value = 0xffff; buf = (value >> 10) & 0x3F; ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1); } if (ret < 0) return ret; return 0; } static inline int pwc_get_agc(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1); if (ret < 0) return ret; if (buf != 0) { /* fixed */ ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1); if (ret < 0) return ret; if (buf > 0x3F) buf = 0x3F; *value = (buf << 10); } else { /* auto */ ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1); if (ret < 0) return ret; /* Gah... this value ranges from 0x00 ... 0x9F */ if (buf > 0x9F) buf = 0x9F; *value = -(48 + buf * 409); } return 0; } static inline int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value) { char buf[2]; int speed, ret; if (mode) buf[0] = 0x0; /* auto */ else buf[0] = 0xff; /* fixed */ ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1); if (!mode && ret >= 0) { if (value < 0) value = 0; if (value > 0xffff) value = 0xffff; switch(pdev->type) { case 675: case 680: case 690: /* speed ranges from 0x0 to 0x290 (656) */ speed = (value / 100); buf[1] = speed >> 8; buf[0] = speed & 0xff; break; case 720: case 730: case 740: case 750: /* speed seems to range from 0x0 to 0xff */ buf[1] = 0; buf[0] = value >> 8; break; } ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2); } return ret; } /* POWER */ int pwc_camera_power(struct pwc_device *pdev, int power) { char buf; if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6)) return 0; /* Not supported by Nala or Timon < release 6 */ if (power) buf = 0x00; /* active */ else buf = 0xFF; /* power save */ return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1); } /* private calls */ static inline int pwc_restore_user(struct pwc_device *pdev) { char buf; /* dummy */ return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0); } static inline int pwc_save_user(struct pwc_device *pdev) { char buf; /* dummy */ return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0); } static inline int pwc_restore_factory(struct pwc_device *pdev) { char buf; /* dummy */ return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0); } /* ************************************************* */ /* Patch by Alvarado: (not in the original version */ /* * the camera recognizes modes from 0 to 4: * * 00: indoor (incandescant lighting) * 01: outdoor (sunlight) * 02: fluorescent lighting * 03: manual * 04: auto */ static inline int pwc_set_awb(struct pwc_device *pdev, int mode) { char buf; int ret; if (mode < 0) mode = 0; if (mode > 4) mode = 4; buf = mode & 0x07; /* just the lowest three bits */ ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1); if (ret < 0) return ret; return 0; } static inline int pwc_get_awb(struct pwc_device *pdev) { unsigned char buf; int ret; ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1); if (ret < 0) return ret; return buf; } static inline int pwc_set_red_gain(struct pwc_device *pdev, int value) { unsigned char buf; if (value < 0) value = 0; if (value > 0xffff) value = 0xffff; /* only the msb is considered */ buf = value >> 8; return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1); } static inline int pwc_get_red_gain(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1); if (ret < 0) return ret; *value = buf << 8; return 0; } static inline int pwc_set_blue_gain(struct pwc_device *pdev, int value) { unsigned char buf; if (value < 0) value = 0; if (value > 0xffff) value = 0xffff; /* only the msb is considered */ buf = value >> 8; return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1); } static inline int pwc_get_blue_gain(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1); if (ret < 0) return ret; *value = buf << 8; return 0; } /* The following two functions are different, since they only read the internal red/blue gains, which may be different from the manual gains set or read above. */ static inline int pwc_read_red_gain(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1); if (ret < 0) return ret; *value = buf << 8; return 0; } static inline int pwc_read_blue_gain(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1); if (ret < 0) return ret; *value = buf << 8; return 0; } static inline int pwc_set_wb_speed(struct pwc_device *pdev, int speed) { unsigned char buf; /* useful range is 0x01..0x20 */ buf = speed / 0x7f0; return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1); } static inline int pwc_get_wb_speed(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1); if (ret < 0) return ret; *value = buf * 0x7f0; return 0; } static inline int pwc_set_wb_delay(struct pwc_device *pdev, int delay) { unsigned char buf; /* useful range is 0x01..0x3F */ buf = (delay >> 10); return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1); } static inline int pwc_get_wb_delay(struct pwc_device *pdev, int *value) { unsigned char buf; int ret; ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1); if (ret < 0) return ret; *value = buf << 10; return 0; } int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value) { unsigned char buf[2]; if (pdev->type < 730) return 0; on_value /= 100; off_value /= 100; if (on_value < 0) on_value = 0; if (on_value > 0xff) on_value = 0xff; if (off_value < 0) off_value = 0; if (off_value > 0xff) off_value = 0xff; buf[0] = on_value; buf[1] = off_value; return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2); } int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value) { unsigned char buf[2]; int ret; if (pdev->type < 730) { *on_value = -1; *off_value = -1; return 0; } ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2); if (ret < 0) return ret; *on_value = buf[0] * 100; *off_value = buf[1] * 100; return 0; } static inline int pwc_set_contour(struct pwc_device *pdev, int contour) { unsigned char buf; int ret; if (contour < 0) buf = 0xff; /* auto contour on */ else buf = 0x0; /* auto contour off */ ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1); if (ret < 0) return ret; if (contour < 0) return 0; if (contour > 0xffff) contour = 0xffff; buf = (contour >> 10); /* contour preset is [0..3f] */ ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1); if (ret < 0) return ret; return 0; } static inline int pwc_get_contour(struct pwc_device *pdev, int *contour) { unsigned char buf; int ret; ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1); if (ret < 0) return ret; if (buf == 0) { /* auto mode off, query current preset value */ ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1); if (ret < 0) return ret; *contour = buf << 10; } else *contour = -1; return 0; } static inline int pwc_set_backlight(struct pwc_device *pdev, int backlight) { unsigned char buf; if (backlight) buf = 0xff; else buf = 0x0; return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1); } static inline int pwc_get_backlight(struct pwc_device *pdev, int *backlight) { int ret; unsigned char buf; ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1); if (ret < 0) return ret; *backlight = buf; return 0; } static inline int pwc_set_flicker(struct pwc_device *pdev, int flicker) { unsigned char buf; if (flicker) buf = 0xff; else buf = 0x0; return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1); } static inline int pwc_get_flicker(struct pwc_device *pdev, int *flicker) { int ret; unsigned char buf; ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1); if (ret < 0) return ret; *flicker = buf; return 0; } static inline int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise) { unsigned char buf; if (noise < 0) noise = 0; if (noise > 3) noise = 3; buf = noise; return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1); } static inline int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise) { int ret; unsigned char buf; ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1); if (ret < 0) return ret; *noise = buf; return 0; } int pwc_mpt_reset(struct pwc_device *pdev, int flags) { unsigned char buf; buf = flags & 0x03; // only lower two bits are currently used return SendControlMsg(SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, 1); } static inline int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt) { unsigned char buf[4]; /* set new relative angle; angles are expressed in degrees * 100, but cam as .5 degree resolution, hence devide by 200. Also the angle must be multiplied by 64 before it's send to the cam (??) */ pan = 64 * pan / 100; tilt = -64 * tilt / 100; /* positive tilt is down, which is not what the user would expect */ buf[0] = pan & 0xFF; buf[1] = (pan >> 8) & 0xFF; buf[2] = tilt & 0xFF; buf[3] = (tilt >> 8) & 0xFF; return SendControlMsg(SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, 4); } static inline int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status) { int ret; unsigned char buf[5]; ret = RecvControlMsg(GET_MPT_CTL, PT_STATUS_FORMATTER, 5); if (ret < 0) return ret; status->status = buf[0] & 0x7; // 3 bits are used for reporting status->time_pan = (buf[1] << 8) + buf[2]; status->time_tilt = (buf[3] << 8) + buf[4]; return 0; } int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor) { unsigned char buf; int ret = -1, request; if (pdev->type < 675) request = SENSOR_TYPE_FORMATTER1; else if (pdev->type < 730) return -1; /* The Vesta series doesn't have this call */ else request = SENSOR_TYPE_FORMATTER2; ret = RecvControlMsg(GET_STATUS_CTL, request, 1); if (ret < 0) return ret; if (pdev->type < 675) *sensor = buf | 0x100; else *sensor = buf; return 0; } /* End of Add-Ons */ /* ************************************************* */ /* Linux 2.5.something and 2.6 pass direct pointers to arguments of ioctl() calls. With 2.4, you have to do tedious copy_from_user() and copy_to_user() calls. With these macros we circumvent this, and let me maintain only one source file. The functionality is exactly the same otherwise. */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) /* define local variable for arg */ #define ARG_DEF(ARG_type, ARG_name)\ ARG_type *ARG_name = arg; /* copy arg to local variable */ #define ARG_IN(ARG_name) /* nothing */ /* argument itself (referenced) */ #define ARGR(ARG_name) (*ARG_name) /* argument address */ #define ARGA(ARG_name) ARG_name /* copy local variable to arg */ #define ARG_OUT(ARG_name) /* nothing */ #else #define ARG_DEF(ARG_type, ARG_name)\ ARG_type ARG_name; #define ARG_IN(ARG_name)\ if (copy_from_user(&ARG_name, arg, sizeof(ARG_name))) {\ ret = -EFAULT;\ break;\ } #define ARGR(ARG_name) ARG_name #define ARGA(ARG_name) &ARG_name #define ARG_OUT(ARG_name)\ if (copy_to_user(arg, &ARG_name, sizeof(ARG_name))) {\ ret = -EFAULT;\ break;\ } #endif int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) { int ret = 0; switch(cmd) { case VIDIOCPWCRUSER: { if (pwc_restore_user(pdev)) ret = -EINVAL; break; } case VIDIOCPWCSUSER: { if (pwc_save_user(pdev)) ret = -EINVAL; break; } case VIDIOCPWCFACTORY: { if (pwc_restore_factory(pdev)) ret = -EINVAL; break; } case VIDIOCPWCSCQUAL: { ARG_DEF(int, qual) ARG_IN(qual) if (ARGR(qual) < 0 || ARGR(qual) > 3) ret = -EINVAL; else ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, ARGR(qual), pdev->vsnapshot); if (ret >= 0) pdev->vcompression = ARGR(qual); break; } case VIDIOCPWCGCQUAL: { ARG_DEF(int, qual) ARGR(qual) = pdev->vcompression; ARG_OUT(qual) break; } case VIDIOCPWCPROBE: { ARG_DEF(struct pwc_probe, probe) strcpy(ARGR(probe).name, pdev->vdev->name); ARGR(probe).type = pdev->type; ARG_OUT(probe) break; } case VIDIOCPWCGSERIAL: { ARG_DEF(struct pwc_serial, serial) strcpy(ARGR(serial).serial, pdev->serial); ARG_OUT(serial) break; } case VIDIOCPWCSAGC: { ARG_DEF(int, agc) ARG_IN(agc) if (pwc_set_agc(pdev, ARGR(agc) < 0 ? 1 : 0, ARGR(agc))) ret = -EINVAL; break; } case VIDIOCPWCGAGC: { ARG_DEF(int, agc) if (pwc_get_agc(pdev, ARGA(agc))) ret = -EINVAL; ARG_OUT(agc) break; } case VIDIOCPWCSSHUTTER: { ARG_DEF(int, shutter_speed) ARG_IN(shutter_speed) ret = pwc_set_shutter_speed(pdev, ARGR(shutter_speed) < 0 ? 1 : 0, ARGR(shutter_speed)); break; } case VIDIOCPWCSAWB: { ARG_DEF(struct pwc_whitebalance, wb) ARG_IN(wb) ret = pwc_set_awb(pdev, ARGR(wb).mode); if (ret >= 0 && ARGR(wb).mode == PWC_WB_MANUAL) { pwc_set_red_gain(pdev, ARGR(wb).manual_red); pwc_set_blue_gain(pdev, ARGR(wb).manual_blue); } break; } case VIDIOCPWCGAWB: { ARG_DEF(struct pwc_whitebalance, wb) memset(ARGA(wb), 0, sizeof(struct pwc_whitebalance)); ARGR(wb).mode = pwc_get_awb(pdev); if (ARGR(wb).mode < 0) ret = -EINVAL; else { if (ARGR(wb).mode == PWC_WB_MANUAL) { ret = pwc_get_red_gain(pdev, &ARGR(wb).manual_red); if (ret < 0) break; ret = pwc_get_blue_gain(pdev, &ARGR(wb).manual_blue); if (ret < 0) break; } if (ARGR(wb).mode == PWC_WB_AUTO) { ret = pwc_read_red_gain(pdev, &ARGR(wb).read_red); if (ret < 0) break; ret =pwc_read_blue_gain(pdev, &ARGR(wb).read_blue); if (ret < 0) break; } } ARG_OUT(wb) break; } case VIDIOCPWCSAWBSPEED: { ARG_DEF(struct pwc_wb_speed, wbs) if (ARGR(wbs).control_speed > 0) { ret = pwc_set_wb_speed(pdev, ARGR(wbs).control_speed); } if (ARGR(wbs).control_delay > 0) { ret = pwc_set_wb_delay(pdev, ARGR(wbs).control_delay); } break; } case VIDIOCPWCGAWBSPEED: { ARG_DEF(struct pwc_wb_speed, wbs) ret = pwc_get_wb_speed(pdev, &ARGR(wbs).control_speed); if (ret < 0) break; ret = pwc_get_wb_delay(pdev, &ARGR(wbs).control_delay); if (ret < 0) break; ARG_OUT(wbs) break; } case VIDIOCPWCSLED: { ARG_DEF(struct pwc_leds, leds) ARG_IN(leds) ret = pwc_set_leds(pdev, ARGR(leds).led_on, ARGR(leds).led_off); break; } case VIDIOCPWCGLED: { ARG_DEF(struct pwc_leds, leds) ret = pwc_get_leds(pdev, &ARGR(leds).led_on, &ARGR(leds).led_off); ARG_OUT(leds) break; } case VIDIOCPWCSCONTOUR: { ARG_DEF(int, contour) ARG_IN(contour) ret = pwc_set_contour(pdev, ARGR(contour)); break; } case VIDIOCPWCGCONTOUR: { ARG_DEF(int, contour) ret = pwc_get_contour(pdev, ARGA(contour)); ARG_OUT(contour) break; } case VIDIOCPWCSBACKLIGHT: { ARG_DEF(int, backlight) ARG_IN(backlight) ret = pwc_set_backlight(pdev, ARGR(backlight)); break; } case VIDIOCPWCGBACKLIGHT: { ARG_DEF(int, backlight) ret = pwc_get_backlight(pdev, ARGA(backlight)); ARG_OUT(backlight) break; } case VIDIOCPWCSFLICKER: { ARG_DEF(int, flicker) ARG_IN(flicker) ret = pwc_set_flicker(pdev, ARGR(flicker)); break; } case VIDIOCPWCGFLICKER: { ARG_DEF(int, flicker) ret = pwc_get_flicker(pdev, ARGA(flicker)); ARG_OUT(flicker) break; } case VIDIOCPWCSDYNNOISE: { ARG_DEF(int, dynnoise) ARG_IN(dynnoise) ret = pwc_set_dynamic_noise(pdev, ARGR(dynnoise)); break; } case VIDIOCPWCGDYNNOISE: { ARG_DEF(int, dynnoise) ret = pwc_get_dynamic_noise(pdev, ARGA(dynnoise)); ARG_OUT(dynnoise); break; } case VIDIOCPWCGREALSIZE: { ARG_DEF(struct pwc_imagesize, size) ARGR(size).width = pdev->image.x; ARGR(size).height = pdev->image.y; ARG_OUT(size) break; } case VIDIOCPWCMPTRESET: { if (pdev->features & FEATURE_MOTOR_PANTILT) { ARG_DEF(int, flags) ARG_IN(flags) ret = pwc_mpt_reset(pdev, ARGR(flags)); if (ret >= 0) { pdev->pan_angle = 0; pdev->tilt_angle = 0; } } else { ret = -ENXIO; } break; } case VIDIOCPWCMPTGRANGE: { if (pdev->features & FEATURE_MOTOR_PANTILT) { ARG_DEF(struct pwc_mpt_range, range) ARGR(range) = pdev->angle_range; ARG_OUT(range) } else { ret = -ENXIO; } break; } case VIDIOCPWCMPTSANGLE: { int new_pan, new_tilt; if (pdev->features & FEATURE_MOTOR_PANTILT) { ARG_DEF(struct pwc_mpt_angles, angles) ARG_IN(angles) /* The camera can only set relative angles, so do some calculations when getting an absolute angle . */ if (ARGR(angles).absolute) { new_pan = ARGR(angles).pan; new_tilt = ARGR(angles).tilt; } else { new_pan = pdev->pan_angle + ARGR(angles).pan; new_tilt = pdev->tilt_angle + ARGR(angles).tilt; } /* check absolute ranges */ if (new_pan < pdev->angle_range.pan_min || new_pan > pdev->angle_range.pan_max || new_tilt < pdev->angle_range.tilt_min || new_tilt > pdev->angle_range.tilt_max) { ret = -ERANGE; } else { /* go to relative range, check again */ new_pan -= pdev->pan_angle; new_tilt -= pdev->tilt_angle; /* angles are specified in degrees * 100, thus the limit = 36000 */ if (new_pan < -36000 || new_pan > 36000 || new_tilt < -36000 || new_tilt > 36000) ret = -ERANGE; } if (ret == 0) /* no errors so far */ { ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt); if (ret >= 0) { pdev->pan_angle += new_pan; pdev->tilt_angle += new_tilt; } if (ret == -EPIPE) /* stall -> out of range */ ret = -ERANGE; } } else { ret = -ENXIO; } break; } case VIDIOCPWCMPTGANGLE: { if (pdev->features & FEATURE_MOTOR_PANTILT) { ARG_DEF(struct pwc_mpt_angles, angles) ARGR(angles).absolute = 1; ARGR(angles).pan = pdev->pan_angle; ARGR(angles).tilt = pdev->tilt_angle; ARG_OUT(angles) } else { ret = -ENXIO; } break; } case VIDIOCPWCMPTSTATUS: { if (pdev->features & FEATURE_MOTOR_PANTILT) { ARG_DEF(struct pwc_mpt_status, status) ret = pwc_mpt_get_status(pdev, ARGA(status)); ARG_OUT(status) } else { ret = -ENXIO; } break; } case VIDIOCPWCGVIDCMD: { ARG_DEF(struct pwc_video_command, cmd); ARGR(cmd).type = pdev->type; ARGR(cmd).release = pdev->release; ARGR(cmd).command_len = pdev->cmd_len; memcpy(&ARGR(cmd).command_buf, pdev->cmd_buf, pdev->cmd_len); ARGR(cmd).bandlength = pdev->vbandlength; ARGR(cmd).frame_size = pdev->frame_size; ARG_OUT(cmd) break; } /* case VIDIOCPWCGVIDTABLE: { ARG_DEF(struct pwc_table_init_buffer, table); ARGR(table).len = pdev->cmd_len; memcpy(&ARGR(table).buffer, pdev->decompress_data, pdev->decompressor->table_size); ARG_OUT(table) break; } */ default: ret = -ENOIOCTLCMD; break; } if (ret > 0) return 0; return ret; }