diff options
Diffstat (limited to 'drivers/media/video/usbvision/usbvision-core.c')
| -rw-r--r-- | drivers/media/video/usbvision/usbvision-core.c | 2640 |
1 files changed, 0 insertions, 2640 deletions
diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c deleted file mode 100644 index b9dd74fde21..00000000000 --- a/drivers/media/video/usbvision/usbvision-core.c +++ /dev/null @@ -1,2640 +0,0 @@ -/* - * usbvision-core.c - driver for NT100x USB video capture devices - * - * - * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> - * Dwaine Garden <dwainegarden@rogers.com> - * - * This module is part of usbvision driver project. - * Updates to driver completed by Dwaine P. Garden - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/timer.h> -#include <linux/gfp.h> -#include <linux/mm.h> -#include <linux/highmem.h> -#include <linux/vmalloc.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <asm/io.h> -#include <linux/videodev2.h> -#include <linux/i2c.h> - -#include <media/saa7115.h> -#include <media/v4l2-common.h> -#include <media/tuner.h> - -#include <linux/workqueue.h> - -#include "usbvision.h" - -static unsigned int core_debug; -module_param(core_debug,int,0644); -MODULE_PARM_DESC(core_debug,"enable debug messages [core]"); - -static unsigned int force_testpattern; -module_param(force_testpattern,int,0644); -MODULE_PARM_DESC(force_testpattern,"enable test pattern display [core]"); - -static int adjustCompression = 1; /* Set the compression to be adaptive */ -module_param(adjustCompression, int, 0444); -MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device. Default: 1 (On)"); - -/* To help people with Black and White output with using s-video input. - * Some cables and input device are wired differently. */ -static int SwitchSVideoInput; -module_param(SwitchSVideoInput, int, 0444); -MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)"); - -static unsigned int adjust_X_Offset = -1; -module_param(adjust_X_Offset, int, 0644); -MODULE_PARM_DESC(adjust_X_Offset, "adjust X offset display [core]"); - -static unsigned int adjust_Y_Offset = -1; -module_param(adjust_Y_Offset, int, 0644); -MODULE_PARM_DESC(adjust_Y_Offset, "adjust Y offset display [core]"); - - -#define ENABLE_HEXDUMP 0 /* Enable if you need it */ - - -#ifdef USBVISION_DEBUG - #define PDEBUG(level, fmt, args...) { \ - if (core_debug & (level)) \ - printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ - __func__, __LINE__ , ## args); \ - } -#else - #define PDEBUG(level, fmt, args...) do {} while(0) -#endif - -#define DBG_HEADER 1<<0 -#define DBG_IRQ 1<<1 -#define DBG_ISOC 1<<2 -#define DBG_PARSE 1<<3 -#define DBG_SCRATCH 1<<4 -#define DBG_FUNC 1<<5 - -static const int max_imgwidth = MAX_FRAME_WIDTH; -static const int max_imgheight = MAX_FRAME_HEIGHT; -static const int min_imgwidth = MIN_FRAME_WIDTH; -static const int min_imgheight = MIN_FRAME_HEIGHT; - -/* The value of 'scratch_buf_size' affects quality of the picture - * in many ways. Shorter buffers may cause loss of data when client - * is too slow. Larger buffers are memory-consuming and take longer - * to work with. This setting can be adjusted, but the default value - * should be OK for most desktop users. - */ -#define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer -static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE; - -// Function prototypes -static int usbvision_request_intra (struct usb_usbvision *usbvision); -static int usbvision_unrequest_intra (struct usb_usbvision *usbvision); -static int usbvision_adjust_compression (struct usb_usbvision *usbvision); -static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision); - -/*******************************/ -/* Memory management functions */ -/*******************************/ - -/* - * Here we want the physical address of the memory. - * This is used when initializing the contents of the area. - */ - -static void *usbvision_rvmalloc(unsigned long size) -{ - void *mem; - unsigned long adr; - - size = PAGE_ALIGN(size); - mem = vmalloc_32(size); - if (!mem) - return NULL; - - memset(mem, 0, size); /* Clear the ram out, no junk to the user */ - adr = (unsigned long) mem; - while (size > 0) { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - return mem; -} - -static void usbvision_rvfree(void *mem, unsigned long size) -{ - unsigned long adr; - - if (!mem) - return; - - size = PAGE_ALIGN(size); - - adr = (unsigned long) mem; - while ((long) size > 0) { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - vfree(mem); -} - - -#if ENABLE_HEXDUMP -static void usbvision_hexdump(const unsigned char *data, int len) -{ - char tmp[80]; - int i, k; - - for (i = k = 0; len > 0; i++, len--) { - if (i > 0 && (i % 16 == 0)) { - printk("%s\n", tmp); - k = 0; - } - k += sprintf(&tmp[k], "%02x ", data[i]); - } - if (k > 0) - printk("%s\n", tmp); -} -#endif - -/******************************** - * scratch ring buffer handling - ********************************/ -static int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */ -{ - int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr; - if (len < 0) { - len += scratch_buf_size; - } - PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len); - - return len; -} - - -/* This returns the free space left in the buffer */ -static int scratch_free(struct usb_usbvision *usbvision) -{ - int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr; - if (free <= 0) { - free += scratch_buf_size; - } - if (free) { - free -= 1; /* at least one byte in the buffer must */ - /* left blank, otherwise there is no chance to differ between full and empty */ - } - PDEBUG(DBG_SCRATCH, "return %d\n", free); - - return free; -} - - -/* This puts data into the buffer */ -static int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, - int len) -{ - int len_part; - - if (usbvision->scratch_write_ptr + len < scratch_buf_size) { - memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len); - usbvision->scratch_write_ptr += len; - } - else { - len_part = scratch_buf_size - usbvision->scratch_write_ptr; - memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part); - if (len == len_part) { - usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */ - } - else { - memcpy(usbvision->scratch, data + len_part, len - len_part); - usbvision->scratch_write_ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr); - - return len; -} - -/* This marks the write_ptr as position of new frame header */ -static void scratch_mark_header(struct usb_usbvision *usbvision) -{ - PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr); - - usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] = - usbvision->scratch_write_ptr; - usbvision->scratch_headermarker_write_ptr += 1; - usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER; -} - -/* This gets data from the buffer at the given "ptr" position */ -static int scratch_get_extra(struct usb_usbvision *usbvision, - unsigned char *data, int *ptr, int len) -{ - int len_part; - if (*ptr + len < scratch_buf_size) { - memcpy(data, usbvision->scratch + *ptr, len); - *ptr += len; - } - else { - len_part = scratch_buf_size - *ptr; - memcpy(data, usbvision->scratch + *ptr, len_part); - if (len == len_part) { - *ptr = 0; /* just set the y_ptr to zero */ - } - else { - memcpy(data + len_part, usbvision->scratch, len - len_part); - *ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr); - - return len; -} - - -/* This sets the scratch extra read pointer */ -static void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, - int len) -{ - *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size; - - PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); -} - - -/*This increments the scratch extra read pointer */ -static void scratch_inc_extra_ptr(int *ptr, int len) -{ - *ptr = (*ptr + len) % scratch_buf_size; - - PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); -} - - -/* This gets data from the buffer */ -static int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, - int len) -{ - int len_part; - if (usbvision->scratch_read_ptr + len < scratch_buf_size) { - memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len); - usbvision->scratch_read_ptr += len; - } - else { - len_part = scratch_buf_size - usbvision->scratch_read_ptr; - memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part); - if (len == len_part) { - usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */ - } - else { - memcpy(data + len_part, usbvision->scratch, len - len_part); - usbvision->scratch_read_ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr); - - return len; -} - - -/* This sets read pointer to next header and returns it */ -static int scratch_get_header(struct usb_usbvision *usbvision, - struct usbvision_frame_header *header) -{ - int errCode = 0; - - PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr); - - while (usbvision->scratch_headermarker_write_ptr - - usbvision->scratch_headermarker_read_ptr != 0) { - usbvision->scratch_read_ptr = - usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr]; - usbvision->scratch_headermarker_read_ptr += 1; - usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER; - scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH); - if ((header->magic_1 == USBVISION_MAGIC_1) - && (header->magic_2 == USBVISION_MAGIC_2) - && (header->headerLength == USBVISION_HEADER_LENGTH)) { - errCode = USBVISION_HEADER_LENGTH; - header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8); - header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8); - break; - } - } - - return errCode; -} - - -/*This removes len bytes of old data from the buffer */ -static void scratch_rm_old(struct usb_usbvision *usbvision, int len) -{ - - usbvision->scratch_read_ptr += len; - usbvision->scratch_read_ptr %= scratch_buf_size; - PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr); -} - - -/*This resets the buffer - kills all data in it too */ -static void scratch_reset(struct usb_usbvision *usbvision) -{ - PDEBUG(DBG_SCRATCH, "\n"); - - usbvision->scratch_read_ptr = 0; - usbvision->scratch_write_ptr = 0; - usbvision->scratch_headermarker_read_ptr = 0; - usbvision->scratch_headermarker_write_ptr = 0; - usbvision->isocstate = IsocState_NoFrame; -} - -int usbvision_scratch_alloc(struct usb_usbvision *usbvision) -{ - usbvision->scratch = vmalloc_32(scratch_buf_size); - scratch_reset(usbvision); - if(usbvision->scratch == NULL) { - dev_err(&usbvision->dev->dev, - "%s: unable to allocate %d bytes for scratch\n", - __func__, scratch_buf_size); - return -ENOMEM; - } - return 0; -} - -void usbvision_scratch_free(struct usb_usbvision *usbvision) -{ - vfree(usbvision->scratch); - usbvision->scratch = NULL; - -} - -/* - * usbvision_testpattern() - * - * Procedure forms a test pattern (yellow grid on blue background). - * - * Parameters: - * fullframe: if TRUE then entire frame is filled, otherwise the procedure - * continues from the current scanline. - * pmode 0: fill the frame with solid blue color (like on VCR or TV) - * 1: Draw a colored grid - * - */ -static void usbvision_testpattern(struct usb_usbvision *usbvision, - int fullframe, int pmode) -{ - static const char proc[] = "usbvision_testpattern"; - struct usbvision_frame *frame; - unsigned char *f; - int num_cell = 0; - int scan_length = 0; - static int num_pass; - - if (usbvision == NULL) { - printk(KERN_ERR "%s: usbvision == NULL\n", proc); - return; - } - if (usbvision->curFrame == NULL) { - printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc); - return; - } - - /* Grab the current frame */ - frame = usbvision->curFrame; - - /* Optionally start at the beginning */ - if (fullframe) { - frame->curline = 0; - frame->scanlength = 0; - } - - /* Form every scan line */ - for (; frame->curline < frame->frmheight; frame->curline++) { - int i; - - f = frame->data + (usbvision->curwidth * 3 * frame->curline); - for (i = 0; i < usbvision->curwidth; i++) { - unsigned char cb = 0x80; - unsigned char cg = 0; - unsigned char cr = 0; - - if (pmode == 1) { - if (frame->curline % 32 == 0) - cb = 0, cg = cr = 0xFF; - else if (i % 32 == 0) { - if (frame->curline % 32 == 1) - num_cell++; - cb = 0, cg = cr = 0xFF; - } else { - cb = - ((num_cell * 7) + - num_pass) & 0xFF; - cg = - ((num_cell * 5) + - num_pass * 2) & 0xFF; - cr = - ((num_cell * 3) + - num_pass * 3) & 0xFF; - } - } else { - /* Just the blue screen */ - } - - *f++ = cb; - *f++ = cg; - *f++ = cr; - scan_length += 3; - } - } - - frame->grabstate = FrameState_Done; - frame->scanlength += scan_length; - ++num_pass; - -} - -/* - * usbvision_decompress_alloc() - * - * allocates intermediate buffer for decompression - */ -int usbvision_decompress_alloc(struct usb_usbvision *usbvision) -{ - int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2; - usbvision->IntraFrameBuffer = vmalloc_32(IFB_size); - if (usbvision->IntraFrameBuffer == NULL) { - dev_err(&usbvision->dev->dev, - "%s: unable to allocate %d for compr. frame buffer\n", - __func__, IFB_size); - return -ENOMEM; - } - return 0; -} - -/* - * usbvision_decompress_free() - * - * frees intermediate buffer for decompression - */ -void usbvision_decompress_free(struct usb_usbvision *usbvision) -{ - vfree(usbvision->IntraFrameBuffer); - usbvision->IntraFrameBuffer = NULL; - -} - -/************************************************************ - * Here comes the data parsing stuff that is run as interrupt - ************************************************************/ -/* - * usbvision_find_header() - * - * Locate one of supported header markers in the scratch buffer. - */ -static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision) -{ - struct usbvision_frame *frame; - int foundHeader = 0; - - frame = usbvision->curFrame; - - while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) { - // found header in scratch - PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u", - frame->isocHeader.magic_2, - frame->isocHeader.magic_1, - frame->isocHeader.headerLength, - frame->isocHeader.frameNum, - frame->isocHeader.framePhase, - frame->isocHeader.frameLatency, - frame->isocHeader.dataFormat, - frame->isocHeader.formatParam, - frame->isocHeader.frameWidth, - frame->isocHeader.frameHeight); - - if (usbvision->requestIntra) { - if (frame->isocHeader.formatParam & 0x80) { - foundHeader = 1; - usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time - usbvision_unrequest_intra(usbvision); - break; - } - } - else { - foundHeader = 1; - break; - } - } - - if (foundHeader) { - frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width; - frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height; - frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3; - } - else { // no header found - PDEBUG(DBG_HEADER, "skipping scratch data, no header"); - scratch_reset(usbvision); - return ParseState_EndParse; - } - - // found header - if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) { - //check isocHeader.frameNum for lost frames - if (usbvision->lastIsocFrameNum >= 0) { - if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) { - // unexpected frame drop: need to request new intra frame - PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum); - usbvision_request_intra(usbvision); - return ParseState_NextFrame; - } - } - usbvision->lastIsocFrameNum = frame->isocHeader.frameNum; - } - usbvision->header_count++; - frame->scanstate = ScanState_Lines; - frame->curline = 0; - - if (force_testpattern) { - usbvision_testpattern(usbvision, 1, 1); - return ParseState_NextFrame; - } - return ParseState_Continue; -} - -static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision, - long *pcopylen) -{ - volatile struct usbvision_frame *frame; - unsigned char *f; - int len; - int i; - unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components - unsigned char rv, gv, bv; // RGB components - int clipmask_index, bytes_per_pixel; - int stretch_bytes, clipmask_add; - - frame = usbvision->curFrame; - f = frame->data + (frame->v4l2_linesize * frame->curline); - - /* Make sure there's enough data for the entire line */ - len = (frame->isocHeader.frameWidth * 2)+5; - if (scratch_len(usbvision) < len) { - PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len); - return ParseState_Out; - } - - if ((frame->curline + 1) >= frame->frmheight) { - return ParseState_NextFrame; - } - - bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; - stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; - clipmask_index = frame->curline * MAX_FRAME_WIDTH; - clipmask_add = usbvision->stretch_width; - - for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) { - - scratch_get(usbvision, &yuyv[0], 4); - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = yuyv[0]; // Y - *f++ = yuyv[3]; // U - } - else { - - YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - } - } - clipmask_index += clipmask_add; - f += stretch_bytes; - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = yuyv[2]; // Y - *f++ = yuyv[1]; // V - } - else { - - YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - } - } - clipmask_index += clipmask_add; - f += stretch_bytes; - } - - frame->curline += usbvision->stretch_height; - *pcopylen += frame->v4l2_linesize * usbvision->stretch_height; - - if (frame->curline >= frame->frmheight) { - return ParseState_NextFrame; - } - else { - return ParseState_Continue; - } -} - -/* The decompression routine */ -static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed, - unsigned char *Decompressed, int *StartPos, - int *BlockTypeStartPos, int Len) -{ - int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen; - unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator; - - Integrator = 0; - Pos = *StartPos; - BlockTypePos = *BlockTypeStartPos; - MaxPos = 396; //Pos + Len; - ExtraPos = Pos; - BlockLen = 0; - BlockByte = 0; - BlockCode = 0; - BlockType = 0; - BlockTypeByte = 0; - BlockTypeLen = 0; - RestPixel = Len; - - for (Idx = 0; Idx < Len; Idx++) { - - if (BlockLen == 0) { - if (BlockTypeLen==0) { - BlockTypeByte = Compressed[BlockTypePos]; - BlockTypePos++; - BlockTypeLen = 4; - } - BlockType = (BlockTypeByte & 0xC0) >> 6; - - //statistic: - usbvision->ComprBlockTypes[BlockType]++; - - Pos = ExtraPos; - if (BlockType == 0) { - if(RestPixel >= 24) { - Idx += 23; - RestPixel -= 24; - Integrator = Decompressed[Idx]; - } else { - Idx += RestPixel - 1; - RestPixel = 0; - } - } else { - BlockCode = Compressed[Pos]; - Pos++; - if (RestPixel >= 24) { - BlockLen = 24; - } else { - BlockLen = RestPixel; - } - RestPixel -= BlockLen; - ExtraPos = Pos + (BlockLen / 4); - } - BlockTypeByte <<= 2; - BlockTypeLen -= 1; - } - if (BlockLen > 0) { - if ((BlockLen%4) == 0) { - BlockByte = Compressed[Pos]; - Pos++; - } - if (BlockType == 1) { //inter Block - Integrator = Decompressed[Idx]; - } - switch (BlockByte & 0xC0) { - case 0x03<<6: - Integrator += Compressed[ExtraPos]; - ExtraPos++; - break; - case 0x02<<6: - Integrator += BlockCode; - break; - case 0x00: - Integrator -= BlockCode; - break; - } - Decompressed[Idx] = Integrator; - BlockByte <<= 2; - BlockLen -= 1; - } - } - *StartPos = ExtraPos; - *BlockTypeStartPos = BlockTypePos; - return Idx; -} - - -/* - * usbvision_parse_compress() - * - * Parse compressed frame from the scratch buffer, put - * decoded RGB value into the current frame buffer and add the written - * number of bytes (RGB) to the *pcopylen. - * - */ -static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision, - long *pcopylen) -{ -#define USBVISION_STRIP_MAGIC 0x5A -#define USBVISION_STRIP_LEN_MAX 400 -#define USBVISION_STRIP_HEADER_LEN 3 - - struct usbvision_frame *frame; - unsigned char *f,*u = NULL ,*v = NULL; - unsigned char StripData[USBVISION_STRIP_LEN_MAX]; - unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN]; - int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos; - int clipmask_index, bytes_per_pixel, rc; - int imageSize; - unsigned char rv, gv, bv; - static unsigned char *Y, *U, *V; - - frame = usbvision->curFrame; - imageSize = frame->frmwidth * frame->frmheight; - if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) || - (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) { // this is a planar format - //... v4l2_linesize not used here. - f = frame->data + (frame->width * frame->curline); - } else - f = frame->data + (frame->v4l2_linesize * frame->curline); - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers - // get base of u and b planes add halfoffset - - u = frame->data - + imageSize - + (frame->frmwidth >>1) * frame->curline ; - v = u + (imageSize >>1 ); - - } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){ - - v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ; - u = v + (imageSize >>2) ; - } - - if (frame->curline == 0) { - usbvision_adjust_compression(usbvision); - } - - if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) { - return ParseState_Out; - } - - //get strip header without changing the scratch_read_ptr - scratch_set_extra_ptr(usbvision, &StripPtr, 0); - scratch_get_extra(usbvision, &StripHeader[0], &StripPtr, - USBVISION_STRIP_HEADER_LEN); - - if (StripHeader[0] != USBVISION_STRIP_MAGIC) { - // wrong strip magic - usbvision->stripMagicErrors++; - return ParseState_NextFrame; - } - - if (frame->curline != (int)StripHeader[2]) { - //line number missmatch error - usbvision->stripLineNumberErrors++; - } - - StripLen = 2 * (unsigned int)StripHeader[1]; - if (StripLen > USBVISION_STRIP_LEN_MAX) { - // strip overrun - // I think this never happens - usbvision_request_intra(usbvision); - } - - if (scratch_len(usbvision) < StripLen) { - //there is not enough data for the strip - return ParseState_Out; - } - - if (usbvision->IntraFrameBuffer) { - Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline; - U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2); - V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2); - } - else { - return ParseState_NextFrame; - } - - bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; - clipmask_index = frame->curline * MAX_FRAME_WIDTH; - - scratch_get(usbvision, StripData, StripLen); - - IdxEnd = frame->frmwidth; - BlockTypePos = USBVISION_STRIP_HEADER_LEN; - StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2; - BlockPos = StartBlockPos; - - usbvision->BlockPos = BlockPos; - - if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) { - //return ParseState_Continue; - } - if (StripLen > usbvision->maxStripLen) { - usbvision->maxStripLen = StripLen; - } - - if (frame->curline%2) { - if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) { - //return ParseState_Continue; - } - } - else { - if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) { - //return ParseState_Continue; - } - } - - if (BlockPos > usbvision->comprBlockPos) { - usbvision->comprBlockPos = BlockPos; - } - if (BlockPos > StripLen) { - usbvision->stripLenErrors++; - } - - for (Idx = 0; Idx < IdxEnd; Idx++) { - if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = Y[Idx]; - *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2]; - } - else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) { - *f++ = Y[Idx]; - if ( Idx & 0x01) - *u++ = U[Idx>>1] ; - else - *v++ = V[Idx>>1]; - } - else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { - *f++ = Y [Idx]; - if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){ - -/* only need do this for 1 in 4 pixels */ -/* intraframe buffer is YUV420 format */ - - *u++ = U[Idx >>1]; - *v++ = V[Idx >>1]; - } - - } - else { - YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_GREY: - *f++ = Y[Idx]; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - } - } - clipmask_index++; - } - /* Deal with non-integer no. of bytes for YUV420P */ - if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 ) - *pcopylen += frame->v4l2_linesize; - else - *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1; - - frame->curline += 1; - - if (frame->curline >= frame->frmheight) { - return ParseState_NextFrame; - } - else { - return ParseState_Continue; - } - -} - - -/* - * usbvision_parse_lines_420() - * - * Parse two lines from the scratch buffer, put - * decoded RGB value into the current frame buffer and add the written - * number of bytes (RGB) to the *pcopylen. - * - */ -static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision, - long *pcopylen) -{ - struct usbvision_frame *frame; - unsigned char *f_even = NULL, *f_odd = NULL; - unsigned int pixel_per_line, block; - int pixel, block_split; - int y_ptr, u_ptr, v_ptr, y_odd_offset; - const int y_block_size = 128; - const int uv_block_size = 64; - const int sub_block_size = 32; - const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4; - const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4; - unsigned char y[2], u, v; /* YUV components */ - int y_, u_, v_, vb, uvg, ur; - int r_, g_, b_; /* RGB components */ - unsigned char g; - int clipmask_even_index, clipmask_odd_index, bytes_per_pixel; - int clipmask_add, stretch_bytes; - - frame = usbvision->curFrame; - f_even = frame->data + (frame->v4l2_linesize * frame->curline); - f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height; - - /* Make sure there's enough data for the entire line */ - /* In this mode usbvision transfer 3 bytes for every 2 pixels */ - /* I need two lines to decode the color */ - bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; - stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; - clipmask_even_index = frame->curline * MAX_FRAME_WIDTH; - clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH; - clipmask_add = usbvision->stretch_width; - pixel_per_line = frame->isocHeader.frameWidth; - - if (scratch_len(usbvision) < (int)pixel_per_line * 3) { - //printk(KERN_DEBUG "out of data, need %d\n", len); - return ParseState_Out; - } - - if ((frame->curline + 1) >= frame->frmheight) { - return ParseState_NextFrame; - } - - block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines? - - y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size) - + block_split * uv_block_size; - - scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset); - scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size); - scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset - + (4 - block_split) * sub_block_size); - - for (block = 0; block < (pixel_per_line / sub_block_size); - block++) { - - - for (pixel = 0; pixel < sub_block_size; pixel +=2) { - scratch_get(usbvision, &y[0], 2); - scratch_get_extra(usbvision, &u, &u_ptr, 1); - scratch_get_extra(usbvision, &v, &v_ptr, 1); - - //I don't use the YUV_TO_RGB macro for better performance - v_ = v - 128; - u_ = u - 128; - vb = 132252 * v_; - uvg= -53281 * u_ - 25625 * v_; - ur = 104595 * u_; - - if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_even++ = y[0]; - *f_even++ = v; - } - else { - y_ = 76284 * (y[0] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg)>> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_even_index += clipmask_add; - f_even += stretch_bytes; - - if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_even++ = y[1]; - *f_even++ = u; - } - else { - y_ = 76284 * (y[1] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg)>> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_even_index += clipmask_add; - f_even += stretch_bytes; - - scratch_get_extra(usbvision, &y[0], &y_ptr, 2); - - if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_odd++ = y[0]; - *f_odd++ = v; - } - else { - y_ = 76284 * (y[0] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg)>> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_odd_index += clipmask_add; - f_odd += stretch_bytes; - - if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_odd++ = y[1]; - *f_odd++ = u; - } - else { - y_ = 76284 * (y[1] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg)>> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_odd_index += clipmask_add; - f_odd += stretch_bytes; - } - - scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size); - scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size] - * sub_block_size); - scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size] - * sub_block_size); - scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size] - * sub_block_size); - } - - scratch_rm_old(usbvision, pixel_per_line * 3 / 2 - + block_split * sub_block_size); - - frame->curline += 2 * usbvision->stretch_height; - *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height; - - if (frame->curline >= frame->frmheight) - return ParseState_NextFrame; - else - return ParseState_Continue; -} - -/* - * usbvision_parse_data() - * - * Generic routine to parse the scratch buffer. It employs either - * usbvision_find_header() or usbvision_parse_lines() to do most - * of work. - * - */ -static void usbvision_parse_data(struct usb_usbvision *usbvision) -{ - struct usbvision_frame *frame; - enum ParseState newstate; - long copylen = 0; - unsigned long lock_flags; - - frame = usbvision->curFrame; - - PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision)); - - while (1) { - - newstate = ParseState_Out; - if (scratch_len(usbvision)) { - if (frame->scanstate == ScanState_Scanning) { - newstate = usbvision_find_header(usbvision); - } - else if (frame->scanstate == ScanState_Lines) { - if (usbvision->isocMode == ISOC_MODE_YUV420) { - newstate = usbvision_parse_lines_420(usbvision, ©len); - } - else if (usbvision->isocMode == ISOC_MODE_YUV422) { - newstate = usbvision_parse_lines_422(usbvision, ©len); - } - else if (usbvision->isocMode == ISOC_MODE_COMPRESS) { - newstate = usbvision_parse_compress(usbvision, ©len); - } - - } - } - if (newstate == ParseState_Continue) { - continue; - } - else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) { - break; - } - else { - return; /* ParseState_EndParse */ - } - } - - if (newstate == ParseState_NextFrame) { - frame->grabstate = FrameState_Done; - do_gettimeofday(&(frame->timestamp)); - frame->sequence = usbvision->frame_num; - - spin_lock_irqsave(&usbvision->queue_lock, lock_flags); - list_move_tail(&(frame->frame), &usbvision->outqueue); - usbvision->curFrame = NULL; - spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); - - usbvision->frame_num++; - - /* This will cause the process to request another frame. */ - if (waitqueue_active(&usbvision->wait_frame)) { - PDEBUG(DBG_PARSE, "Wake up !"); - wake_up_interruptible(&usbvision->wait_frame); - } - } - else - frame->grabstate = FrameState_Grabbing; - - - /* Update the frame's uncompressed length. */ - frame->scanlength += copylen; -} - - -/* - * Make all of the blocks of data contiguous - */ -static int usbvision_compress_isochronous(struct usb_usbvision *usbvision, - struct urb *urb) -{ - unsigned char *packet_data; - int i, totlen = 0; - - for (i = 0; i < urb->number_of_packets; i++) { - int packet_len = urb->iso_frame_desc[i].actual_length; - int packet_stat = urb->iso_frame_desc[i].status; - - packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - - /* Detect and ignore errored packets */ - if (packet_stat) { // packet_stat != 0 ????????????? - PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat); - usbvision->isocErrCount++; - continue; - } - - /* Detect and ignore empty packets */ - if (packet_len < 0) { - PDEBUG(DBG_ISOC, "error packet [%d]", i); - usbvision->isocSkipCount++; - continue; - } - else if (packet_len == 0) { /* Frame end ????? */ - PDEBUG(DBG_ISOC, "null packet [%d]", i); - usbvision->isocstate=IsocState_NoFrame; - usbvision->isocSkipCount++; - continue; - } - else if (packet_len > usbvision->isocPacketSize) { - PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i); - usbvision->isocSkipCount++; - continue; - } - - PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len); - - if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins - usbvision->isocstate=IsocState_InFrame; - scratch_mark_header(usbvision); - usbvision_measure_bandwidth(usbvision); - PDEBUG(DBG_ISOC, "packet with header"); - } - - /* - * If usbvision continues to feed us with data but there is no - * consumption (if, for example, V4L client fell asleep) we - * may overflow the buffer. We have to move old data over to - * free room for new data. This is bad for old data. If we - * just drop new data then it's bad for new data... choose - * your favorite evil here. - */ - if (scratch_free(usbvision) < packet_len) { - - usbvision->scratch_ovf_count++; - PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d", - scratch_len(usbvision), packet_len); - scratch_rm_old(usbvision, packet_len - scratch_free(usbvision)); - } - - /* Now we know that there is enough room in scratch buffer */ - scratch_put(usbvision, packet_data, packet_len); - totlen += packet_len; - usbvision->isocDataCount += packet_len; - usbvision->isocPacketCount++; - } -#if ENABLE_HEXDUMP - if (totlen > 0) { - static int foo; - if (foo < 1) { - printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen); - usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen); - ++foo; - } - } -#endif - return totlen; -} - -static void usbvision_isocIrq(struct urb *urb) -{ - int errCode = 0; - int len; - struct usb_usbvision *usbvision = urb->context; - int i; - unsigned long startTime = jiffies; - struct usbvision_frame **f; - - /* We don't want to do anything if we are about to be removed! */ - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return; - - /* any urb with wrong status is ignored without acknowledgement */ - if (urb->status == -ENOENT) { - return; - } - - f = &usbvision->curFrame; - - /* Manage streaming interruption */ - if (usbvision->streaming == Stream_Interrupt) { - usbvision->streaming = Stream_Idle; - if ((*f)) { - (*f)->grabstate = FrameState_Ready; - (*f)->scanstate = ScanState_Scanning; - } - PDEBUG(DBG_IRQ, "stream interrupted"); - wake_up_interruptible(&usbvision->wait_stream); - } - - /* Copy the data received into our scratch buffer */ - len = usbvision_compress_isochronous(usbvision, urb); - - usbvision->isocUrbCount++; - usbvision->urb_length = len; - - if (usbvision->streaming == Stream_On) { - - /* If we collected enough data let's parse! */ - if ((scratch_len(usbvision) > USBVISION_HEADER_LENGTH) && - (!list_empty(&(usbvision->inqueue))) ) { - if (!(*f)) { - (*f) = list_entry(usbvision->inqueue.next, - struct usbvision_frame, - frame); - } - usbvision_parse_data(usbvision); - } - else { - /*If we don't have a frame - we're current working on, complain */ - PDEBUG(DBG_IRQ, - "received data, but no one needs it"); - scratch_reset(usbvision); - } - } - else { - PDEBUG(DBG_IRQ, "received data, but no one needs it"); - scratch_reset(usbvision); - } - - usbvision->timeInIrq += jiffies - startTime; - - for (i = 0; i < USBVISION_URB_FRAMES; i++) { - urb->iso_frame_desc[i].status = 0; - urb->iso_frame_desc[i].actual_length = 0; - } - - urb->status = 0; - urb->dev = usbvision->dev; - errCode = usb_submit_urb (urb, GFP_ATOMIC); - - if(errCode) { - dev_err(&usbvision->dev->dev, - "%s: usb_submit_urb failed: error %d\n", - __func__, errCode); - } - - return; -} - -/*************************************/ -/* Low level usbvision access functions */ -/*************************************/ - -/* - * usbvision_read_reg() - * - * return < 0 -> Error - * >= 0 -> Data - */ - -int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg) -{ - int errCode = 0; - unsigned char buffer[1]; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return -1; - - errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, - 0, (__u16) reg, buffer, 1, HZ); - - if (errCode < 0) { - dev_err(&usbvision->dev->dev, - "%s: failed: error %d\n", __func__, errCode); - return errCode; - } - return buffer[0]; -} - -/* - * usbvision_write_reg() - * - * return 1 -> Reg written - * 0 -> usbvision is not yet ready - * -1 -> Something went wrong - */ - -int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, - unsigned char value) -{ - int errCode = 0; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ); - - if (errCode < 0) { - dev_err(&usbvision->dev->dev, - "%s: failed: error %d\n", __func__, errCode); - } - return errCode; -} - - -static void usbvision_ctrlUrb_complete(struct urb *urb) -{ - struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context; - - PDEBUG(DBG_IRQ, ""); - usbvision->ctrlUrbBusy = 0; - if (waitqueue_active(&usbvision->ctrlUrb_wq)) { - wake_up_interruptible(&usbvision->ctrlUrb_wq); - } -} - - -static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address, - unsigned char *data, int len) -{ - int errCode = 0; - - PDEBUG(DBG_IRQ, ""); - if (len > 8) { - return -EFAULT; - } - if (usbvision->ctrlUrbBusy) { - return -EBUSY; - } - usbvision->ctrlUrbBusy = 1; - - usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; - usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE; - usbvision->ctrlUrbSetup.wValue = 0; - usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address); - usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len); - usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev, - usb_sndctrlpipe(usbvision->dev, 1), - (unsigned char *)&usbvision->ctrlUrbSetup, - (void *)usbvision->ctrlUrbBuffer, len, - usbvision_ctrlUrb_complete, - (void *)usbvision); - - memcpy(usbvision->ctrlUrbBuffer, data, len); - - errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC); - if (errCode < 0) { - // error in usb_submit_urb() - usbvision->ctrlUrbBusy = 0; - } - PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode); - return errCode; -} - - -static int usbvision_init_compression(struct usb_usbvision *usbvision) -{ - int errCode = 0; - - usbvision->lastIsocFrameNum = -1; - usbvision->isocDataCount = 0; - usbvision->isocPacketCount = 0; - usbvision->isocSkipCount = 0; - usbvision->comprLevel = 50; - usbvision->lastComprLevel = -1; - usbvision->isocUrbCount = 0; - usbvision->requestIntra = 1; - usbvision->isocMeasureBandwidthCount = 0; - - return errCode; -} - -/* this function measures the used bandwidth since last call - * return: 0 : no error - * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize - */ -static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision) -{ - int errCode = 0; - - if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames - usbvision->isocMeasureBandwidthCount++; - return errCode; - } - if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) { - usbvision->usedBandwidth = usbvision->isocDataCount / - (usbvision->isocPacketCount + usbvision->isocSkipCount) * - 100 / usbvision->isocPacketSize; - } - usbvision->isocMeasureBandwidthCount = 0; - usbvision->isocDataCount = 0; - usbvision->isocPacketCount = 0; - usbvision->isocSkipCount = 0; - return errCode; -} - -static int usbvision_adjust_compression (struct usb_usbvision *usbvision) -{ - int errCode = 0; - unsigned char buffer[6]; - - PDEBUG(DBG_IRQ, ""); - if ((adjustCompression) && (usbvision->usedBandwidth > 0)) { - usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2; - RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100); - if (usbvision->comprLevel != usbvision->lastComprLevel) { - int distorsion; - if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) { - buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1 - buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2 - distorsion = 7 + 248 * usbvision->comprLevel / 100; - buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter) - buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra) - distorsion = 1 + 42 * usbvision->comprLevel / 100; - buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter) - buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra) - } - else { //BRIDGE_NT1003 - buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1 - buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2 - distorsion = 2 + 253 * usbvision->comprLevel / 100; - buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7 - buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11 - distorsion = 0 + 43 * usbvision->comprLevel / 100; - buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7 - buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8 - } - errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6); - if (errCode == 0){ - PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0], - buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]); - usbvision->lastComprLevel = usbvision->comprLevel; - } - } - } - return errCode; -} - -static int usbvision_request_intra (struct usb_usbvision *usbvision) -{ - int errCode = 0; - unsigned char buffer[1]; - - PDEBUG(DBG_IRQ, ""); - usbvision->requestIntra = 1; - buffer[0] = 1; - usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); - return errCode; -} - -static int usbvision_unrequest_intra (struct usb_usbvision *usbvision) -{ - int errCode = 0; - unsigned char buffer[1]; - - PDEBUG(DBG_IRQ, ""); - usbvision->requestIntra = 0; - buffer[0] = 0; - usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); - return errCode; -} - -/******************************* - * usbvision utility functions - *******************************/ - -int usbvision_power_off(struct usb_usbvision *usbvision) -{ - int errCode = 0; - - PDEBUG(DBG_FUNC, ""); - - errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); - if (errCode == 1) { - usbvision->power = 0; - } - PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode); - return errCode; -} - -/* - * usbvision_set_video_format() - * - */ -static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format) -{ - static const char proc[] = "usbvision_set_video_format"; - int rc; - unsigned char value[2]; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - PDEBUG(DBG_FUNC, "isocMode %#02x", format); - - if ((format != ISOC_MODE_YUV422) - && (format != ISOC_MODE_YUV420) - && (format != ISOC_MODE_COMPRESS)) { - printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420", - format); - format = ISOC_MODE_YUV420; - } - value[0] = 0x0A; //TODO: See the effect of the filter - value[1] = format; // Sets the VO_MODE register which follows FILT_CONT - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_FILT_CONT, value, 2, HZ); - - if (rc < 0) { - printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - " - "reconnect or reload driver.\n", proc, rc); - } - usbvision->isocMode = format; - return rc; -} - -/* - * usbvision_set_output() - * - */ - -int usbvision_set_output(struct usb_usbvision *usbvision, int width, - int height) -{ - int errCode = 0; - int UsbWidth, UsbHeight; - unsigned int frameRate=0, frameDrop=0; - unsigned char value[4]; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) { - return 0; - } - - if (width > MAX_USB_WIDTH) { - UsbWidth = width / 2; - usbvision->stretch_width = 2; - } - else { - UsbWidth = width; - usbvision->stretch_width = 1; - } - - if (height > MAX_USB_HEIGHT) { - UsbHeight = height / 2; - usbvision->stretch_height = 2; - } - else { - UsbHeight = height; - usbvision->stretch_height = 1; - } - - RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH); - UsbWidth &= ~(MIN_FRAME_WIDTH-1); - RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT); - UsbHeight &= ~(1); - - PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d", - UsbWidth, UsbHeight, width, height, - usbvision->stretch_width, usbvision->stretch_height); - - /* I'll not rewrite the same values */ - if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) { - value[0] = UsbWidth & 0xff; //LSB - value[1] = (UsbWidth >> 8) & 0x03; //MSB - value[2] = UsbHeight & 0xff; //LSB - value[3] = (UsbHeight >> 8) & 0x03; //MSB - - errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, - 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ); - - if (errCode < 0) { - dev_err(&usbvision->dev->dev, - "%s failed: error %d\n", __func__, errCode); - return errCode; - } - usbvision->curwidth = usbvision->stretch_width * UsbWidth; - usbvision->curheight = usbvision->stretch_height * UsbHeight; - } - - if (usbvision->isocMode == ISOC_MODE_YUV422) { - frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2); - } - else if (usbvision->isocMode == ISOC_MODE_YUV420) { - frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8); - } - else { - frameRate = FRAMERATE_MAX; - } - - if (usbvision->tvnormId & V4L2_STD_625_50) { - frameDrop = frameRate * 32 / 25 - 1; - } - else if (usbvision->tvnormId & V4L2_STD_525_60) { - frameDrop = frameRate * 32 / 30 - 1; - } - - RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX); - - PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop); - - frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled - - /* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ... - => frameSkip = 4; - => frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25; - - frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ... - => frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ... - => frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125; - */ - errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop); - return errCode; -} - - -/* - * usbvision_frames_alloc - * allocate the required frames - */ -int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames) -{ - int i; - - /*needs to be page aligned cause the buffers can be mapped individually! */ - usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth * - usbvision->curheight * - usbvision->palette.bytes_per_pixel); - - /* Try to do my best to allocate the frames the user want in the remaining memory */ - usbvision->num_frames = number_of_frames; - while (usbvision->num_frames > 0) { - usbvision->fbuf_size = usbvision->num_frames * usbvision->max_frame_size; - if((usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size))) { - break; - } - usbvision->num_frames--; - } - - spin_lock_init(&usbvision->queue_lock); - init_waitqueue_head(&usbvision->wait_frame); - init_waitqueue_head(&usbvision->wait_stream); - - /* Allocate all buffers */ - for (i = 0; i < usbvision->num_frames; i++) { - usbvision->frame[i].index = i; - usbvision->frame[i].grabstate = FrameState_Unused; - usbvision->frame[i].data = usbvision->fbuf + - i * usbvision->max_frame_size; - /* - * Set default sizes for read operation. - */ - usbvision->stretch_width = 1; - usbvision->stretch_height = 1; - usbvision->frame[i].width = usbvision->curwidth; - usbvision->frame[i].height = usbvision->curheight; - usbvision->frame[i].bytes_read = 0; - } - PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)",usbvision->num_frames,usbvision->max_frame_size); - return usbvision->num_frames; -} - -/* - * usbvision_frames_free - * frees memory allocated for the frames - */ -void usbvision_frames_free(struct usb_usbvision *usbvision) -{ - /* Have to free all that memory */ - PDEBUG(DBG_FUNC, "free %d frames",usbvision->num_frames); - - if (usbvision->fbuf != NULL) { - usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size); - usbvision->fbuf = NULL; - - usbvision->num_frames = 0; - } -} -/* - * usbvision_empty_framequeues() - * prepare queues for incoming and outgoing frames - */ -void usbvision_empty_framequeues(struct usb_usbvision *usbvision) -{ - u32 i; - - INIT_LIST_HEAD(&(usbvision->inqueue)); - INIT_LIST_HEAD(&(usbvision->outqueue)); - - for (i = 0; i < USBVISION_NUMFRAMES; i++) { - usbvision->frame[i].grabstate = FrameState_Unused; - usbvision->frame[i].bytes_read = 0; - } -} - -/* - * usbvision_stream_interrupt() - * stops streaming - */ -int usbvision_stream_interrupt(struct usb_usbvision *usbvision) -{ - int ret = 0; - - /* stop reading from the device */ - - usbvision->streaming = Stream_Interrupt; - ret = wait_event_timeout(usbvision->wait_stream, - (usbvision->streaming == Stream_Idle), - msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES)); - return ret; -} - -/* - * usbvision_set_compress_params() - * - */ - -static int usbvision_set_compress_params(struct usb_usbvision *usbvision) -{ - static const char proc[] = "usbvision_set_compresion_params: "; - int rc; - unsigned char value[6]; - - value[0] = 0x0F; // Intra-Compression cycle - value[1] = 0x01; // Reg.45 one line per strip - value[2] = 0x00; // Reg.46 Force intra mode on all new frames - value[3] = 0x00; // Reg.47 FORCE_UP <- 0 normal operation (not force) - value[4] = 0xA2; // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode. - value[5] = 0x00; // Reg.49 DVI_YUV This has nothing to do with compression - - //catched values for NT1004 - // value[0] = 0xFF; // Never apply intra mode automatically - // value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip - // value[2] = 0x01; // Force intra mode on all new frames - // value[3] = 0x00; // Strip size 400 Bytes; do not force up - // value[4] = 0xA2; // - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_INTRA_CYC, value, 5, HZ); - - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " - "reconnect or reload driver.\n", proc, rc); - return rc; - } - - if (usbvision->bridgeType == BRIDGE_NT1004) { - value[0] = 20; // PCM Threshold 1 - value[1] = 12; // PCM Threshold 2 - value[2] = 255; // Distorsion Threshold inter - value[3] = 255; // Distorsion Threshold intra - value[4] = 43; // Max Distorsion inter - value[5] = 43; // Max Distorsion intra - } - else { - value[0] = 20; // PCM Threshold 1 - value[1] = 12; // PCM Threshold 2 - value[2] = 255; // Distorsion Threshold d7-d0 - value[3] = 0; // Distorsion Threshold d11-d8 - value[4] = 43; // Max Distorsion d7-d0 - value[5] = 0; // Max Distorsion d8 - } - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_PCM_THR1, value, 6, HZ); - - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " - "reconnect or reload driver.\n", proc, rc); - return rc; - } - - - return rc; -} - - -/* - * usbvision_set_input() - * - * Set the input (saa711x, ...) size x y and other misc input params - * I've no idea if this parameters are right - * - */ -int usbvision_set_input(struct usb_usbvision *usbvision) -{ - static const char proc[] = "usbvision_set_input: "; - int rc; - unsigned char value[8]; - unsigned char dvi_yuv_value; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - /* Set input format expected from decoder*/ - if (usbvision_device_data[usbvision->DevModel].Vin_Reg1_override) { - value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1; - } else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) { - /* SAA7113 uses 8 bit output */ - value[0] = USBVISION_8_422_SYNC; - } else { - /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses - * as that is how saa7111 is configured */ - value[0] = USBVISION_16_422_SYNC; - /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/ - } - - rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]); - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " - "reconnect or reload driver.\n", proc, rc); - return rc; - } - - - if (usbvision->tvnormId & V4L2_STD_PAL) { - value[0] = 0xC0; - value[1] = 0x02; //0x02C0 -> 704 Input video line length - value[2] = 0x20; - value[3] = 0x01; //0x0120 -> 288 Input video n. of lines - value[4] = 0x60; - value[5] = 0x00; //0x0060 -> 96 Input video h offset - value[6] = 0x16; - value[7] = 0x00; //0x0016 -> 22 Input video v offset - } else if (usbvision->tvnormId & V4L2_STD_SECAM) { - value[0] = 0xC0; - value[1] = 0x02; //0x02C0 -> 704 Input video line length - value[2] = 0x20; - value[3] = 0x01; //0x0120 -> 288 Input video n. of lines - value[4] = 0x01; - value[5] = 0x00; //0x0001 -> 01 Input video h offset - value[6] = 0x01; - value[7] = 0x00; //0x0001 -> 01 Input video v offset - } else { /* V4L2_STD_NTSC */ - value[0] = 0xD0; - value[1] = 0x02; //0x02D0 -> 720 Input video line length - value[2] = 0xF0; - value[3] = 0x00; //0x00F0 -> 240 Input video number of lines - value[4] = 0x50; - value[5] = 0x00; //0x0050 -> 80 Input video h offset - value[6] = 0x10; - value[7] = 0x00; //0x0010 -> 16 Input video v offset - } - - if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) { - value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff; - value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8; - } - - if (adjust_X_Offset != -1) { - value[4] = adjust_X_Offset & 0xff; - value[5] = (adjust_X_Offset & 0x0300) >> 8; - } - - if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) { - value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff; - value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8; - } - - if (adjust_Y_Offset != -1) { - value[6] = adjust_Y_Offset & 0xff; - value[7] = (adjust_Y_Offset & 0x0300) >> 8; - } - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, /* USBVISION specific code */ - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_LXSIZE_I, value, 8, HZ); - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " - "reconnect or reload driver.\n", proc, rc); - return rc; - } - - - dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */ - - if(usbvision_device_data[usbvision->DevModel].Dvi_yuv_override){ - dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv; - } - else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) { - /* This changes as the fine sync control changes. Further investigation necessary */ - dvi_yuv_value = 0x06; - } - - return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value)); -} - - -/* - * usbvision_set_dram_settings() - * - * Set the buffer address needed by the usbvision dram to operate - * This values has been taken with usbsnoop. - * - */ - -static int usbvision_set_dram_settings(struct usb_usbvision *usbvision) -{ - int rc; - unsigned char value[8]; - - if (usbvision->isocMode == ISOC_MODE_COMPRESS) { - value[0] = 0x42; - value[1] = 0x71; - value[2] = 0xff; - value[3] = 0x00; - value[4] = 0x98; - value[5] = 0xe0; - value[6] = 0x71; - value[7] = 0xff; - // UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte) - // FDL: 0x00000-0x0E099 = 57498 Words - // VDW: 0x0E3FF-0x3FFFF - } - else { - value[0] = 0x42; - value[1] = 0x00; - value[2] = 0xff; - value[3] = 0x00; - value[4] = 0x00; - value[5] = 0x00; - value[6] = 0x00; - value[7] = 0xff; - } - /* These are the values of the address of the video buffer, - * they have to be loaded into the USBVISION_DRM_PRM1-8 - * - * Start address of video output buffer for read: drm_prm1-2 -> 0x00000 - * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff - * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000 - * Only used in compressed mode - * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff - * Only used in compressed mode - * Start address of video output buffer for write: drm_prm1-7 -> 0x00000 - * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff - */ - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, /* USBVISION specific code */ - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_DRM_PRM1, value, 8, HZ); - - if (rc < 0) { - dev_err(&usbvision->dev->dev, "%sERROR=%d\n", __func__, rc); - return rc; - } - - /* Restart the video buffer logic */ - if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR | - USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0) - return rc; - rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00); - - return rc; -} - -/* - * () - * - * Power on the device, enables suspend-resume logic - * & reset the isoc End-Point - * - */ - -int usbvision_power_on(struct usb_usbvision *usbvision) -{ - int errCode = 0; - - PDEBUG(DBG_FUNC, ""); - - usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_RES2); - - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID); - errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2); - if (errCode == 1) { - usbvision->power = 1; - } - PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode); - return errCode; -} - - -/* - * usbvision timer stuff - */ - -// to call usbvision_power_off from task queue -static void call_usbvision_power_off(struct work_struct *work) -{ - struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, powerOffWork); - - PDEBUG(DBG_FUNC, ""); - if(mutex_lock_interruptible(&usbvision->lock)) { - return; - } - - - if(usbvision->user == 0) { - usbvision_i2c_unregister(usbvision); - - usbvision_power_off(usbvision); - usbvision->initialized = 0; - } - mutex_unlock(&usbvision->lock); -} - -static void usbvision_powerOffTimer(unsigned long data) -{ - struct usb_usbvision *usbvision = (void *) data; - - PDEBUG(DBG_FUNC, ""); - del_timer(&usbvision->powerOffTimer); - INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off); - (void) schedule_work(&usbvision->powerOffWork); -} - -void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision) -{ - init_timer(&usbvision->powerOffTimer); - usbvision->powerOffTimer.data = (long) usbvision; - usbvision->powerOffTimer.function = usbvision_powerOffTimer; -} - -void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision) -{ - mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME); -} - -void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision) -{ - if (timer_pending(&usbvision->powerOffTimer)) { - del_timer(&usbvision->powerOffTimer); - } -} - -/* - * usbvision_begin_streaming() - * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no - * idea about the rest - */ -int usbvision_begin_streaming(struct usb_usbvision *usbvision) -{ - int errCode = 0; - - if (usbvision->isocMode == ISOC_MODE_COMPRESS) { - usbvision_init_compression(usbvision); - } - errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID | - usbvision->Vin_Reg2_Preset); - return errCode; -} - -/* - * usbvision_restart_isoc() - * Not sure yet if touching here PWR_REG make loose the config - */ - -int usbvision_restart_isoc(struct usb_usbvision *usbvision) -{ - int ret; - - if ( - (ret = - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0) - return ret; - if ( - (ret = - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID | - USBVISION_RES2)) < 0) - return ret; - if ( - (ret = - usbvision_write_reg(usbvision, USBVISION_VIN_REG2, - USBVISION_KEEP_BLANK | USBVISION_NOHVALID | - usbvision->Vin_Reg2_Preset)) < 0) return ret; - - /* TODO: schedule timeout */ - while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) & 0x01) != 1); - - return 0; -} - -int usbvision_audio_off(struct usb_usbvision *usbvision) -{ - if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) { - printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n"); - return -1; - } - usbvision->AudioMute = 0; - usbvision->AudioChannel = USBVISION_AUDIO_MUTE; - return 0; -} - -int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel) -{ - if (!usbvision->AudioMute) { - if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) { - printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n"); - return -1; - } - } - usbvision->AudioChannel = AudioChannel; - return 0; -} - -int usbvision_setup(struct usb_usbvision *usbvision,int format) -{ - usbvision_set_video_format(usbvision, format); - usbvision_set_dram_settings(usbvision); - usbvision_set_compress_params(usbvision); - usbvision_set_input(usbvision); - usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT); - usbvision_restart_isoc(usbvision); - - /* cosas del PCM */ - return USBVISION_IS_OPERATIONAL(usbvision); -} - -int usbvision_set_alternate(struct usb_usbvision *dev) -{ - int errCode, prev_alt = dev->ifaceAlt; - int i; - - dev->ifaceAlt=0; - for(i=0;i< dev->num_alt; i++) - if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->ifaceAlt]) - dev->ifaceAlt=i; - - if (dev->ifaceAlt != prev_alt) { - dev->isocPacketSize = dev->alt_max_pkt_size[dev->ifaceAlt]; - PDEBUG(DBG_FUNC,"setting alternate %d with wMaxPacketSize=%u", dev->ifaceAlt,dev->isocPacketSize); - errCode = usb_set_interface(dev->dev, dev->iface, dev->ifaceAlt); - if (errCode < 0) { - dev_err(&dev->dev->dev, - "cannot change alternate number to %d (error=%i)\n", - dev->ifaceAlt, errCode); - return errCode; - } - } - - PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isocPacketSize); - - return 0; -} - -/* - * usbvision_init_isoc() - * - */ -int usbvision_init_isoc(struct usb_usbvision *usbvision) -{ - struct usb_device *dev = usbvision->dev; - int bufIdx, errCode, regValue; - int sb_size; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return -EFAULT; - - usbvision->curFrame = NULL; - scratch_reset(usbvision); - - /* Alternate interface 1 is is the biggest frame size */ - errCode = usbvision_set_alternate(usbvision); - if (errCode < 0) { - usbvision->last_error = errCode; - return -EBUSY; - } - sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize; - - regValue = (16 - usbvision_read_reg(usbvision, - USBVISION_ALTER_REG)) & 0x0F; - - usbvision->usb_bandwidth = regValue >> 1; - PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", - usbvision->usb_bandwidth); - - - - /* We double buffer the Iso lists */ - - for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { - int j, k; - struct urb *urb; - - urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); - if (urb == NULL) { - dev_err(&usbvision->dev->dev, - "%s: usb_alloc_urb() failed\n", __func__); - return -ENOMEM; - } - usbvision->sbuf[bufIdx].urb = urb; - usbvision->sbuf[bufIdx].data = - usb_alloc_coherent(usbvision->dev, - sb_size, - GFP_KERNEL, - &urb->transfer_dma); - urb->dev = dev; - urb->context = usbvision; - urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); - urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; - urb->interval = 1; - urb->transfer_buffer = usbvision->sbuf[bufIdx].data; - urb->complete = usbvision_isocIrq; - urb->number_of_packets = USBVISION_URB_FRAMES; - urb->transfer_buffer_length = - usbvision->isocPacketSize * USBVISION_URB_FRAMES; - for (j = k = 0; j < USBVISION_URB_FRAMES; j++, - k += usbvision->isocPacketSize) { - urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length = - usbvision->isocPacketSize; - } - } - - /* Submit all URBs */ - for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { - errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, - GFP_KERNEL); - if (errCode) { - dev_err(&usbvision->dev->dev, - "%s: usb_submit_urb(%d) failed: error %d\n", - __func__, bufIdx, errCode); - } - } - - usbvision->streaming = Stream_Idle; - PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", - __func__, - usbvision->video_endp); - return 0; -} - -/* - * usbvision_stop_isoc() - * - * This procedure stops streaming and deallocates URBs. Then it - * activates zero-bandwidth alt. setting of the video interface. - * - */ -void usbvision_stop_isoc(struct usb_usbvision *usbvision) -{ - int bufIdx, errCode, regValue; - int sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize; - - if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL)) - return; - - /* Unschedule all of the iso td's */ - for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { - usb_kill_urb(usbvision->sbuf[bufIdx].urb); - if (usbvision->sbuf[bufIdx].data){ - usb_free_coherent(usbvision->dev, - sb_size, - usbvision->sbuf[bufIdx].data, - usbvision->sbuf[bufIdx].urb->transfer_dma); - } - usb_free_urb(usbvision->sbuf[bufIdx].urb); - usbvision->sbuf[bufIdx].urb = NULL; - } - - PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __func__); - usbvision->streaming = Stream_Off; - - if (!usbvision->remove_pending) { - - /* Set packet size to 0 */ - usbvision->ifaceAlt=0; - errCode = usb_set_interface(usbvision->dev, usbvision->iface, - usbvision->ifaceAlt); - if (errCode < 0) { - dev_err(&usbvision->dev->dev, - "%s: usb_set_interface() failed: error %d\n", - __func__, errCode); - usbvision->last_error = errCode; - } - regValue = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F; - usbvision->isocPacketSize = - (regValue == 0) ? 0 : (regValue * 64) - 1; - PDEBUG(DBG_ISOC, "ISO Packet Length:%d", - usbvision->isocPacketSize); - - usbvision->usb_bandwidth = regValue >> 1; - PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", - usbvision->usb_bandwidth); - } -} - -int usbvision_muxsel(struct usb_usbvision *usbvision, int channel) -{ - /* inputs #0 and #3 are constant for every SAA711x. */ - /* inputs #1 and #2 are variable for SAA7111 and SAA7113 */ - int mode[4]= {SAA7115_COMPOSITE0, 0, 0, SAA7115_COMPOSITE3}; - int audio[]= {1, 0, 0, 0}; - //channel 0 is TV with audiochannel 1 (tuner mono) - //channel 1 is Composite with audio channel 0 (line in) - //channel 2 is S-Video with audio channel 0 (line in) - //channel 3 is additional video inputs to the device with audio channel 0 (line in) - - RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs); - usbvision->ctl_input = channel; - - // set the new channel - // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video - // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red - - switch (usbvision_device_data[usbvision->DevModel].Codec) { - case CODEC_SAA7113: - mode[1] = SAA7115_COMPOSITE2; - if (SwitchSVideoInput) { - /* To handle problems with S-Video Input for - * some devices. Use SwitchSVideoInput - * parameter when loading the module.*/ - mode[2] = SAA7115_COMPOSITE1; - } - else { - mode[2] = SAA7115_SVIDEO1; - } - break; - case CODEC_SAA7111: - default: - /* modes for saa7111 */ - mode[1] = SAA7115_COMPOSITE1; - mode[2] = SAA7115_SVIDEO1; - break; - } - call_all(usbvision, video, s_routing, mode[channel], 0, 0); - usbvision_set_audio(usbvision, audio[channel]); - return 0; -} - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * --------------------------------------------------------------------------- - * Local variables: - * c-basic-offset: 8 - * End: - */ |