#include <linux/module.h>
#include <linux/init.h>
#include <linux/spinlock.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include "usbvision.h"
static unsigned int core_debug;
-module_param(core_debug,int,0644);
-MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
+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]");
+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)");
+static int adjust_compression = 1; /* Set the compression to be adaptive */
+module_param(adjust_compression, int, 0444);
+MODULE_PARM_DESC(adjust_compression, " 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 int switch_svideo_input;
+module_param(switch_svideo_input, int, 0444);
+MODULE_PARM_DESC(switch_svideo_input, " 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_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]");
+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 */
__func__, __LINE__ , ## args); \
}
#else
- #define PDEBUG(level, fmt, args...) do {} while(0)
+ #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
+#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;
* 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
+#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);
+/* 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 */
k += sprintf(&tmp[k], "%02x ", data[i]);
}
if (k > 0)
- printk("%s\n", tmp);
+ printk(KERN_CONT "%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 */
+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) {
+
+ if (len < 0)
len += scratch_buf_size;
- }
PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
return len;
static int scratch_free(struct usb_usbvision *usbvision)
{
int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
- if (free <= 0) {
+ 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 */
if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
usbvision->scratch_write_ptr += len;
- }
- else {
+ } 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 {
+ } else {
memcpy(usbvision->scratch, data + len_part, len - len_part);
usbvision->scratch_write_ptr = len - len_part;
}
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 {
+ } 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 {
+ } else {
memcpy(data + len_part, usbvision->scratch, len - len_part);
*ptr = len - len_part;
}
static void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr,
int len)
{
- *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
+ *ptr = (usbvision->scratch_read_ptr + len) % scratch_buf_size;
PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
}
-/*This increments the scratch extra read pointer */
+/* This increments the scratch extra read pointer */
static void scratch_inc_extra_ptr(int *ptr, int len)
{
*ptr = (*ptr + len) % scratch_buf_size;
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 {
+ } 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 {
+ } else {
memcpy(data + len_part, usbvision->scratch, len - len_part);
usbvision->scratch_read_ptr = len - len_part;
}
static int scratch_get_header(struct usb_usbvision *usbvision,
struct usbvision_frame_header *header)
{
- int errCode = 0;
+ int err_code = 0;
PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
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);
+ && (header->header_length == USBVISION_HEADER_LENGTH)) {
+ err_code = USBVISION_HEADER_LENGTH;
+ header->frame_width = header->frame_width_lo + (header->frame_width_hi << 8);
+ header->frame_height = header->frame_height_lo + (header->frame_height_hi << 8);
break;
}
}
- return errCode;
+ return err_code;
}
-/*This removes len bytes of old data from the buffer */
+/* 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 */
+/* This resets the buffer - kills all data in it too */
static void scratch_reset(struct usb_usbvision *usbvision)
{
PDEBUG(DBG_SCRATCH, "\n");
usbvision->scratch_write_ptr = 0;
usbvision->scratch_headermarker_read_ptr = 0;
usbvision->scratch_headermarker_write_ptr = 0;
- usbvision->isocstate = IsocState_NoFrame;
+ usbvision->isocstate = isoc_state_no_frame;
}
int usbvision_scratch_alloc(struct usb_usbvision *usbvision)
{
usbvision->scratch = vmalloc_32(scratch_buf_size);
scratch_reset(usbvision);
- if(usbvision->scratch == NULL) {
+ if (usbvision->scratch == NULL) {
dev_err(&usbvision->dev->dev,
"%s: unable to allocate %d bytes for scratch\n",
__func__, scratch_buf_size);
{
vfree(usbvision->scratch);
usbvision->scratch = NULL;
-
}
/*
printk(KERN_ERR "%s: usbvision == NULL\n", proc);
return;
}
- if (usbvision->curFrame == NULL) {
- printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
+ if (usbvision->cur_frame == NULL) {
+ printk(KERN_ERR "%s: usbvision->cur_frame is NULL.\n", proc);
return;
}
/* Grab the current frame */
- frame = usbvision->curFrame;
+ frame = usbvision->cur_frame;
/* Optionally start at the beginning */
if (fullframe) {
}
}
- frame->grabstate = FrameState_Done;
+ frame->grabstate = frame_state_done;
frame->scanlength += scan_length;
++num_pass;
-
}
/*
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) {
+
+ usbvision->intra_frame_buffer = vmalloc_32(IFB_size);
+ if (usbvision->intra_frame_buffer == NULL) {
dev_err(&usbvision->dev->dev,
"%s: unable to allocate %d for compr. frame buffer\n",
__func__, IFB_size);
*/
void usbvision_decompress_free(struct usb_usbvision *usbvision)
{
- vfree(usbvision->IntraFrameBuffer);
- usbvision->IntraFrameBuffer = NULL;
+ vfree(usbvision->intra_frame_buffer);
+ usbvision->intra_frame_buffer = NULL;
}
*
* Locate one of supported header markers in the scratch buffer.
*/
-static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
+static enum parse_state usbvision_find_header(struct usb_usbvision *usbvision)
{
struct usbvision_frame *frame;
- int foundHeader = 0;
+ int found_header = 0;
- frame = usbvision->curFrame;
+ frame = usbvision->cur_frame;
- while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
- // found header in scratch
+ while (scratch_get_header(usbvision, &frame->isoc_header) == 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
+ frame->isoc_header.magic_2,
+ frame->isoc_header.magic_1,
+ frame->isoc_header.header_length,
+ frame->isoc_header.frame_num,
+ frame->isoc_header.frame_phase,
+ frame->isoc_header.frame_latency,
+ frame->isoc_header.data_format,
+ frame->isoc_header.format_param,
+ frame->isoc_header.frame_width,
+ frame->isoc_header.frame_height);
+
+ if (usbvision->request_intra) {
+ if (frame->isoc_header.format_param & 0x80) {
+ found_header = 1;
+ usbvision->last_isoc_frame_num = -1; /* do not check for lost frames this time */
usbvision_unrequest_intra(usbvision);
break;
}
- }
- else {
- foundHeader = 1;
+ } else {
+ found_header = 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
+ if (found_header) {
+ frame->frmwidth = frame->isoc_header.frame_width * usbvision->stretch_width;
+ frame->frmheight = frame->isoc_header.frame_height * 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;
+ return parse_state_end_parse;
}
- // 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);
+ /* found header */
+ if (frame->isoc_header.data_format == ISOC_MODE_COMPRESS) {
+ /* check isoc_header.frame_num for lost frames */
+ if (usbvision->last_isoc_frame_num >= 0) {
+ if (((usbvision->last_isoc_frame_num + 1) % 32) != frame->isoc_header.frame_num) {
+ /* unexpected frame drop: need to request new intra frame */
+ PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isoc_header.frame_num);
usbvision_request_intra(usbvision);
- return ParseState_NextFrame;
+ return parse_state_next_frame;
}
}
- usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
+ usbvision->last_isoc_frame_num = frame->isoc_header.frame_num;
}
usbvision->header_count++;
- frame->scanstate = ScanState_Lines;
+ frame->scanstate = scan_state_lines;
frame->curline = 0;
if (force_testpattern) {
usbvision_testpattern(usbvision, 1, 1);
- return ParseState_NextFrame;
+ return parse_state_next_frame;
}
- return ParseState_Continue;
+ return parse_state_continue;
}
-static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
+static enum parse_state 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
+ 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;
+ frame = usbvision->cur_frame;
f = frame->data + (frame->v4l2_linesize * frame->curline);
/* Make sure there's enough data for the entire line */
- len = (frame->isocHeader.frameWidth * 2)+5;
+ len = (frame->isoc_header.frame_width * 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;
+ return parse_state_out;
}
- if ((frame->curline + 1) >= frame->frmheight) {
- return ParseState_NextFrame;
- }
+ if ((frame->curline + 1) >= frame->frmheight)
+ return parse_state_next_frame;
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)) {
-
+ 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 {
-
+ *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 += stretch_bytes;
if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
- *f++ = yuyv[2]; // Y
- *f++ = yuyv[1]; // V
- }
- else {
-
+ *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:
frame->curline += usbvision->stretch_height;
*pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
- if (frame->curline >= frame->frmheight) {
- return ParseState_NextFrame;
- }
- else {
- return ParseState_Continue;
- }
+ if (frame->curline >= frame->frmheight)
+ return parse_state_next_frame;
+ return parse_state_continue;
}
/* The decompression routine */
-static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
- unsigned char *Decompressed, int *StartPos,
- int *BlockTypeStartPos, int Len)
+static int usbvision_decompress(struct usb_usbvision *usbvision, unsigned char *compressed,
+ unsigned char *decompressed, int *start_pos,
+ int *block_typestart_pos, 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;
+ int rest_pixel, idx, max_pos, pos, extra_pos, block_len, block_type_pos, block_type_len;
+ unsigned char block_byte, block_code, block_type, block_type_byte, integrator;
+
+ integrator = 0;
+ pos = *start_pos;
+ block_type_pos = *block_typestart_pos;
+ max_pos = 396; /* pos + len; */
+ extra_pos = pos;
+ block_len = 0;
+ block_byte = 0;
+ block_code = 0;
+ block_type = 0;
+ block_type_byte = 0;
+ block_type_len = 0;
+ rest_pixel = len;
+
+ for (idx = 0; idx < len; idx++) {
+ if (block_len == 0) {
+ if (block_type_len == 0) {
+ block_type_byte = compressed[block_type_pos];
+ block_type_pos++;
+ block_type_len = 4;
}
- BlockType = (BlockTypeByte & 0xC0) >> 6;
+ block_type = (block_type_byte & 0xC0) >> 6;
- //statistic:
- usbvision->ComprBlockTypes[BlockType]++;
+ /* statistic: */
+ usbvision->compr_block_types[block_type]++;
- Pos = ExtraPos;
- if (BlockType == 0) {
- if(RestPixel >= 24) {
- Idx += 23;
- RestPixel -= 24;
- Integrator = Decompressed[Idx];
+ pos = extra_pos;
+ if (block_type == 0) {
+ if (rest_pixel >= 24) {
+ idx += 23;
+ rest_pixel -= 24;
+ integrator = decompressed[idx];
} else {
- Idx += RestPixel - 1;
- RestPixel = 0;
+ idx += rest_pixel - 1;
+ rest_pixel = 0;
}
} else {
- BlockCode = Compressed[Pos];
- Pos++;
- if (RestPixel >= 24) {
- BlockLen = 24;
- } else {
- BlockLen = RestPixel;
- }
- RestPixel -= BlockLen;
- ExtraPos = Pos + (BlockLen / 4);
+ block_code = compressed[pos];
+ pos++;
+ if (rest_pixel >= 24)
+ block_len = 24;
+ else
+ block_len = rest_pixel;
+ rest_pixel -= block_len;
+ extra_pos = pos + (block_len / 4);
}
- BlockTypeByte <<= 2;
- BlockTypeLen -= 1;
+ block_type_byte <<= 2;
+ block_type_len -= 1;
}
- if (BlockLen > 0) {
- if ((BlockLen%4) == 0) {
- BlockByte = Compressed[Pos];
- Pos++;
+ if (block_len > 0) {
+ if ((block_len % 4) == 0) {
+ block_byte = 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;
+ if (block_type == 1) /* inter Block */
+ integrator = decompressed[idx];
+ switch (block_byte & 0xC0) {
+ case 0x03 << 6:
+ integrator += compressed[extra_pos];
+ extra_pos++;
+ break;
+ case 0x02 << 6:
+ integrator += block_code;
+ break;
+ case 0x00:
+ integrator -= block_code;
+ break;
}
- Decompressed[Idx] = Integrator;
- BlockByte <<= 2;
- BlockLen -= 1;
+ decompressed[idx] = integrator;
+ block_byte <<= 2;
+ block_len -= 1;
}
}
- *StartPos = ExtraPos;
- *BlockTypeStartPos = BlockTypePos;
- return Idx;
+ *start_pos = extra_pos;
+ *block_typestart_pos = block_type_pos;
+ return idx;
}
* number of bytes (RGB) to the *pcopylen.
*
*/
-static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
+static enum parse_state usbvision_parse_compress(struct usb_usbvision *usbvision,
long *pcopylen)
{
#define USBVISION_STRIP_MAGIC 0x5A
#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;
+ unsigned char *f, *u = NULL, *v = NULL;
+ unsigned char strip_data[USBVISION_STRIP_LEN_MAX];
+ unsigned char strip_header[USBVISION_STRIP_HEADER_LEN];
+ int idx, idx_end, strip_len, strip_ptr, startblock_pos, block_pos, block_type_pos;
int clipmask_index, bytes_per_pixel, rc;
- int imageSize;
+ int image_size;
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.
+ frame = usbvision->cur_frame;
+ image_size = 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
-
+ 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) ;
+ + image_size
+ + (frame->frmwidth >> 1) * frame->curline;
+ v = u + (image_size >> 1);
+ } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
+ v = frame->data + image_size + ((frame->curline * (frame->width)) >> 2);
+ u = v + (image_size >> 2);
}
- if (frame->curline == 0) {
+ if (frame->curline == 0)
usbvision_adjust_compression(usbvision);
- }
- if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
- return ParseState_Out;
- }
+ if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN)
+ return parse_state_out;
- //get strip header without changing the scratch_read_ptr
- scratch_set_extra_ptr(usbvision, &StripPtr, 0);
- scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
+ /* get strip header without changing the scratch_read_ptr */
+ scratch_set_extra_ptr(usbvision, &strip_ptr, 0);
+ scratch_get_extra(usbvision, &strip_header[0], &strip_ptr,
USBVISION_STRIP_HEADER_LEN);
- if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
- // wrong strip magic
- usbvision->stripMagicErrors++;
- return ParseState_NextFrame;
+ if (strip_header[0] != USBVISION_STRIP_MAGIC) {
+ /* wrong strip magic */
+ usbvision->strip_magic_errors++;
+ return parse_state_next_frame;
}
- if (frame->curline != (int)StripHeader[2]) {
- //line number missmatch error
- usbvision->stripLineNumberErrors++;
+ if (frame->curline != (int)strip_header[2]) {
+ /* line number mismatch error */
+ usbvision->strip_line_number_errors++;
}
- StripLen = 2 * (unsigned int)StripHeader[1];
- if (StripLen > USBVISION_STRIP_LEN_MAX) {
- // strip overrun
- // I think this never happens
+ strip_len = 2 * (unsigned int)strip_header[1];
+ if (strip_len > 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 (scratch_len(usbvision) < strip_len) {
+ /* there is not enough data for the strip */
+ return parse_state_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;
+ if (usbvision->intra_frame_buffer) {
+ Y = usbvision->intra_frame_buffer + frame->frmwidth * frame->curline;
+ U = usbvision->intra_frame_buffer + image_size + (frame->frmwidth / 2) * (frame->curline / 2);
+ V = usbvision->intra_frame_buffer + image_size / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
+ } else {
+ return parse_state_next_frame;
}
bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
clipmask_index = frame->curline * MAX_FRAME_WIDTH;
- scratch_get(usbvision, StripData, StripLen);
+ scratch_get(usbvision, strip_data, strip_len);
- IdxEnd = frame->frmwidth;
- BlockTypePos = USBVISION_STRIP_HEADER_LEN;
- StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
- BlockPos = StartBlockPos;
+ idx_end = frame->frmwidth;
+ block_type_pos = USBVISION_STRIP_HEADER_LEN;
+ startblock_pos = block_type_pos + (idx_end - 1) / 96 + (idx_end / 2 - 1) / 96 + 2;
+ block_pos = startblock_pos;
- usbvision->BlockPos = BlockPos;
+ usbvision->block_pos = block_pos;
- if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
- //return ParseState_Continue;
- }
- if (StripLen > usbvision->maxStripLen) {
- usbvision->maxStripLen = StripLen;
- }
+ rc = usbvision_decompress(usbvision, strip_data, Y, &block_pos, &block_type_pos, idx_end);
+ if (strip_len > usbvision->max_strip_len)
+ usbvision->max_strip_len = strip_len;
- 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 (frame->curline % 2)
+ rc = usbvision_decompress(usbvision, strip_data, V, &block_pos, &block_type_pos, idx_end / 2);
+ else
+ rc = usbvision_decompress(usbvision, strip_data, U, &block_pos, &block_type_pos, idx_end / 2);
- if (BlockPos > usbvision->comprBlockPos) {
- usbvision->comprBlockPos = BlockPos;
- }
- if (BlockPos > StripLen) {
- usbvision->stripLenErrors++;
- }
+ if (block_pos > usbvision->comprblock_pos)
+ usbvision->comprblock_pos = block_pos;
+ if (block_pos > strip_len)
+ usbvision->strip_len_errors++;
- 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] ;
+ for (idx = 0; idx < idx_end; 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];
+ *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);
+ } 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;
+ 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 )
+ 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;
- }
+ if (frame->curline >= frame->frmheight)
+ return parse_state_next_frame;
+ return parse_state_continue;
}
* number of bytes (RGB) to the *pcopylen.
*
*/
-static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
+static enum parse_state usbvision_parse_lines_420(struct usb_usbvision *usbvision,
long *pcopylen)
{
struct usbvision_frame *frame;
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 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;
+ 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 */
int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
int clipmask_add, stretch_bytes;
- frame = usbvision->curFrame;
+ frame = usbvision->cur_frame;
f_even = frame->data + (frame->v4l2_linesize * frame->curline);
f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height;
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;
+ pixel_per_line = frame->isoc_header.frame_width;
if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
- //printk(KERN_DEBUG "out of data, need %d\n", len);
- return ParseState_Out;
+ /* printk(KERN_DEBUG "out of data, need %d\n", len); */
+ return parse_state_out;
}
- if ((frame->curline + 1) >= frame->frmheight) {
- return ParseState_NextFrame;
- }
+ if ((frame->curline + 1) >= frame->frmheight)
+ return parse_state_next_frame;
- block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines?
+ 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, &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) {
+ 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
+ /* 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_;
+ vb = 132252 * v_;
+ uvg = -53281 * u_ - 25625 * v_;
ur = 104595 * u_;
- if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+ if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_even++ = y[0];
*f_even++ = v;
- }
- else {
+ } else {
y_ = 76284 * (y[0] - 16);
b_ = (y_ + vb) >> 16;
- g_ = (y_ + uvg)>> 16;
+ g_ = (y_ + uvg) >> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
clipmask_even_index += clipmask_add;
f_even += stretch_bytes;
- if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+ if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_even++ = y[1];
*f_even++ = u;
- }
- else {
+ } else {
y_ = 76284 * (y[1] - 16);
b_ = (y_ + vb) >> 16;
- g_ = (y_ + uvg)>> 16;
+ g_ = (y_ + uvg) >> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
- if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+ if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_odd++ = y[0];
*f_odd++ = v;
- }
- else {
+ } else {
y_ = 76284 * (y[0] - 16);
b_ = (y_ + vb) >> 16;
- g_ = (y_ + uvg)>> 16;
+ g_ = (y_ + uvg) >> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
clipmask_odd_index += clipmask_add;
f_odd += stretch_bytes;
- if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+ if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_odd++ = y[1];
*f_odd++ = u;
- }
- else {
+ } else {
y_ = 76284 * (y[1] - 16);
b_ = (y_ + vb) >> 16;
- g_ = (y_ + uvg)>> 16;
+ g_ = (y_ + uvg) >> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
f_odd += stretch_bytes;
}
- scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
+ 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]
*pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
if (frame->curline >= frame->frmheight)
- return ParseState_NextFrame;
- else
- return ParseState_Continue;
+ return parse_state_next_frame;
+ return parse_state_continue;
}
/*
static void usbvision_parse_data(struct usb_usbvision *usbvision)
{
struct usbvision_frame *frame;
- enum ParseState newstate;
+ enum parse_state newstate;
long copylen = 0;
unsigned long lock_flags;
- frame = usbvision->curFrame;
+ frame = usbvision->cur_frame;
PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
while (1) {
-
- newstate = ParseState_Out;
+ newstate = parse_state_out;
if (scratch_len(usbvision)) {
- if (frame->scanstate == ScanState_Scanning) {
+ if (frame->scanstate == scan_state_scanning) {
newstate = usbvision_find_header(usbvision);
- }
- else if (frame->scanstate == ScanState_Lines) {
- if (usbvision->isocMode == ISOC_MODE_YUV420) {
+ } else if (frame->scanstate == scan_state_lines) {
+ if (usbvision->isoc_mode == ISOC_MODE_YUV420)
newstate = usbvision_parse_lines_420(usbvision, ©len);
- }
- else if (usbvision->isocMode == ISOC_MODE_YUV422) {
+ else if (usbvision->isoc_mode == ISOC_MODE_YUV422)
newstate = usbvision_parse_lines_422(usbvision, ©len);
- }
- else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
+ else if (usbvision->isoc_mode == ISOC_MODE_COMPRESS)
newstate = usbvision_parse_compress(usbvision, ©len);
- }
-
}
}
- if (newstate == ParseState_Continue) {
+ if (newstate == parse_state_continue)
continue;
- }
- else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
+ if ((newstate == parse_state_next_frame) || (newstate == parse_state_out))
break;
- }
- else {
- return; /* ParseState_EndParse */
- }
+ return; /* parse_state_end_parse */
}
- if (newstate == ParseState_NextFrame) {
- frame->grabstate = FrameState_Done;
+ if (newstate == parse_state_next_frame) {
+ frame->grabstate = frame_state_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;
+ usbvision->cur_frame = NULL;
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
usbvision->frame_num++;
PDEBUG(DBG_PARSE, "Wake up !");
wake_up_interruptible(&usbvision->wait_frame);
}
+ } else {
+ frame->grabstate = frame_state_grabbing;
}
- else
- frame->grabstate = FrameState_Grabbing;
-
/* Update the frame's uncompressed length. */
frame->scanlength += copylen;
packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
/* Detect and ignore errored packets */
- if (packet_stat) { // packet_stat != 0 ?????????????
+ if (packet_stat) { /* packet_stat != 0 ????????????? */
PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
- usbvision->isocErrCount++;
+ usbvision->isoc_err_count++;
continue;
}
/* Detect and ignore empty packets */
if (packet_len < 0) {
PDEBUG(DBG_ISOC, "error packet [%d]", i);
- usbvision->isocSkipCount++;
+ usbvision->isoc_skip_count++;
continue;
- }
- else if (packet_len == 0) { /* Frame end ????? */
+ } else if (packet_len == 0) { /* Frame end ????? */
PDEBUG(DBG_ISOC, "null packet [%d]", i);
- usbvision->isocstate=IsocState_NoFrame;
- usbvision->isocSkipCount++;
+ usbvision->isocstate = isoc_state_no_frame;
+ usbvision->isoc_skip_count++;
continue;
- }
- else if (packet_len > usbvision->isocPacketSize) {
- PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
- usbvision->isocSkipCount++;
+ } else if (packet_len > usbvision->isoc_packet_size) {
+ PDEBUG(DBG_ISOC, "packet[%d] > isoc_packet_size", i);
+ usbvision->isoc_skip_count++;
continue;
}
PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
- if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
- usbvision->isocstate=IsocState_InFrame;
+ if (usbvision->isocstate == isoc_state_no_frame) { /* new frame begins */
+ usbvision->isocstate = isoc_state_in_frame;
scratch_mark_header(usbvision);
usbvision_measure_bandwidth(usbvision);
PDEBUG(DBG_ISOC, "packet with header");
* 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);
/* 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++;
+ usbvision->isoc_data_count += packet_len;
+ usbvision->isoc_packet_count++;
}
#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);
}
}
#endif
- return totlen;
+ return totlen;
}
-static void usbvision_isocIrq(struct urb *urb)
+static void usbvision_isoc_irq(struct urb *urb)
{
- int errCode = 0;
+ int err_code = 0;
int len;
struct usb_usbvision *usbvision = urb->context;
int i;
- unsigned long startTime = jiffies;
+ unsigned long start_time = jiffies;
struct usbvision_frame **f;
/* We don't want to do anything if we are about to be removed! */
return;
/* any urb with wrong status is ignored without acknowledgement */
- if (urb->status == -ENOENT) {
+ if (urb->status == -ENOENT)
return;
- }
- f = &usbvision->curFrame;
+ f = &usbvision->cur_frame;
/* Manage streaming interruption */
- if (usbvision->streaming == Stream_Interrupt) {
- usbvision->streaming = Stream_Idle;
+ if (usbvision->streaming == stream_interrupt) {
+ usbvision->streaming = stream_idle;
if ((*f)) {
- (*f)->grabstate = FrameState_Ready;
- (*f)->scanstate = ScanState_Scanning;
+ (*f)->grabstate = frame_state_ready;
+ (*f)->scanstate = scan_state_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->isoc_urb_count++;
usbvision->urb_length = len;
- if (usbvision->streaming == Stream_On) {
-
+ 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 (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
+ } 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 {
+ } else {
PDEBUG(DBG_IRQ, "received data, but no one needs it");
scratch_reset(usbvision);
}
- usbvision->timeInIrq += jiffies - startTime;
+ usbvision->time_in_irq += jiffies - start_time;
for (i = 0; i < USBVISION_URB_FRAMES; i++) {
urb->iso_frame_desc[i].status = 0;
urb->status = 0;
urb->dev = usbvision->dev;
- errCode = usb_submit_urb (urb, GFP_ATOMIC);
+ err_code = usb_submit_urb(urb, GFP_ATOMIC);
- if(errCode) {
+ if (err_code) {
dev_err(&usbvision->dev->dev,
"%s: usb_submit_urb failed: error %d\n",
- __func__, errCode);
+ __func__, err_code);
}
return;
int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
{
- int errCode = 0;
+ int err_code = 0;
unsigned char buffer[1];
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -1;
- errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
+ err_code = 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) {
+ if (err_code < 0) {
dev_err(&usbvision->dev->dev,
- "%s: failed: error %d\n", __func__, errCode);
- return errCode;
+ "%s: failed: error %d\n", __func__, err_code);
+ return err_code;
}
return buffer[0];
}
int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
unsigned char value)
{
- int errCode = 0;
+ int err_code = 0;
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
- errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
+ err_code = 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) {
+ if (err_code < 0) {
dev_err(&usbvision->dev->dev,
- "%s: failed: error %d\n", __func__, errCode);
+ "%s: failed: error %d\n", __func__, err_code);
}
- return errCode;
+ return err_code;
}
-static void usbvision_ctrlUrb_complete(struct urb *urb)
+static void usbvision_ctrl_urb_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);
- }
+ usbvision->ctrl_urb_busy = 0;
+ if (waitqueue_active(&usbvision->ctrl_urb_wq))
+ wake_up_interruptible(&usbvision->ctrl_urb_wq);
}
-static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
- unsigned char *data, int len)
+static int usbvision_write_reg_irq(struct usb_usbvision *usbvision, int address,
+ unsigned char *data, int len)
{
- int errCode = 0;
+ int err_code = 0;
PDEBUG(DBG_IRQ, "");
- if (len > 8) {
+ if (len > 8)
return -EFAULT;
- }
- if (usbvision->ctrlUrbBusy) {
+ if (usbvision->ctrl_urb_busy)
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,
+ usbvision->ctrl_urb_busy = 1;
+
+ usbvision->ctrl_urb_setup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
+ usbvision->ctrl_urb_setup.bRequest = USBVISION_OP_CODE;
+ usbvision->ctrl_urb_setup.wValue = 0;
+ usbvision->ctrl_urb_setup.wIndex = cpu_to_le16(address);
+ usbvision->ctrl_urb_setup.wLength = cpu_to_le16(len);
+ usb_fill_control_urb(usbvision->ctrl_urb, usbvision->dev,
usb_sndctrlpipe(usbvision->dev, 1),
- (unsigned char *)&usbvision->ctrlUrbSetup,
- (void *)usbvision->ctrlUrbBuffer, len,
- usbvision_ctrlUrb_complete,
+ (unsigned char *)&usbvision->ctrl_urb_setup,
+ (void *)usbvision->ctrl_urb_buffer, len,
+ usbvision_ctrl_urb_complete,
(void *)usbvision);
- memcpy(usbvision->ctrlUrbBuffer, data, len);
+ memcpy(usbvision->ctrl_urb_buffer, data, len);
- errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
- if (errCode < 0) {
- // error in usb_submit_urb()
- usbvision->ctrlUrbBusy = 0;
+ err_code = usb_submit_urb(usbvision->ctrl_urb, GFP_ATOMIC);
+ if (err_code < 0) {
+ /* error in usb_submit_urb() */
+ usbvision->ctrl_urb_busy = 0;
}
- PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
- return errCode;
+ PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, err_code);
+ return err_code;
}
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;
+ int err_code = 0;
+
+ usbvision->last_isoc_frame_num = -1;
+ usbvision->isoc_data_count = 0;
+ usbvision->isoc_packet_count = 0;
+ usbvision->isoc_skip_count = 0;
+ usbvision->compr_level = 50;
+ usbvision->last_compr_level = -1;
+ usbvision->isoc_urb_count = 0;
+ usbvision->request_intra = 1;
+ usbvision->isoc_measure_bandwidth_count = 0;
+
+ return err_code;
}
/* 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
+ * sets used_bandwidth to 1-100 : 1-100% of full bandwidth resp. to isoc_packet_size
*/
-static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
+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;
+ int err_code = 0;
+
+ if (usbvision->isoc_measure_bandwidth_count < 2) { /* this gives an average bandwidth of 3 frames */
+ usbvision->isoc_measure_bandwidth_count++;
+ return err_code;
+ }
+ if ((usbvision->isoc_packet_size > 0) && (usbvision->isoc_packet_count > 0)) {
+ usbvision->used_bandwidth = usbvision->isoc_data_count /
+ (usbvision->isoc_packet_count + usbvision->isoc_skip_count) *
+ 100 / usbvision->isoc_packet_size;
+ }
+ usbvision->isoc_measure_bandwidth_count = 0;
+ usbvision->isoc_data_count = 0;
+ usbvision->isoc_packet_count = 0;
+ usbvision->isoc_skip_count = 0;
+ return err_code;
}
-static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
+static int usbvision_adjust_compression(struct usb_usbvision *usbvision)
{
- int errCode = 0;
+ int err_code = 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
+ if ((adjust_compression) && (usbvision->used_bandwidth > 0)) {
+ usbvision->compr_level += (usbvision->used_bandwidth - 90) / 2;
+ RESTRICT_TO_RANGE(usbvision->compr_level, 0, 100);
+ if (usbvision->compr_level != usbvision->last_compr_level) {
+ int distortion;
+
+ if (usbvision->bridge_type == BRIDGE_NT1004 || usbvision->bridge_type == BRIDGE_NT1005) {
+ buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM Threshold 1 */
+ buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM Threshold 2 */
+ distortion = 7 + 248 * usbvision->compr_level / 100;
+ buffer[2] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (inter) */
+ buffer[3] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (intra) */
+ distortion = 1 + 42 * usbvision->compr_level / 100;
+ buffer[4] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (inter) */
+ buffer[5] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (intra) */
+ } else { /* BRIDGE_NT1003 */
+ buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM threshold 1 */
+ buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM threshold 2 */
+ distortion = 2 + 253 * usbvision->compr_level / 100;
+ buffer[2] = (unsigned char)(distortion & 0xFF); /* distortion threshold bit0-7 */
+ buffer[3] = 0; /* (unsigned char)((distortion >> 8) & 0x0F); distortion threshold bit 8-11 */
+ distortion = 0 + 43 * usbvision->compr_level / 100;
+ buffer[4] = (unsigned char)(distortion & 0xFF); /* maximum distortion bit0-7 */
+ buffer[5] = 0; /* (unsigned char)((distortion >> 8) & 0x01); maximum distortion bit 8 */
}
- errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
- if (errCode == 0){
+ err_code = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
+ if (err_code == 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;
+ usbvision->last_compr_level = usbvision->compr_level;
}
}
}
- return errCode;
+ return err_code;
}
-static int usbvision_request_intra (struct usb_usbvision *usbvision)
+static int usbvision_request_intra(struct usb_usbvision *usbvision)
{
- int errCode = 0;
+ int err_code = 0;
unsigned char buffer[1];
PDEBUG(DBG_IRQ, "");
- usbvision->requestIntra = 1;
+ usbvision->request_intra = 1;
buffer[0] = 1;
usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
- return errCode;
+ return err_code;
}
-static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
+static int usbvision_unrequest_intra(struct usb_usbvision *usbvision)
{
- int errCode = 0;
+ int err_code = 0;
unsigned char buffer[1];
PDEBUG(DBG_IRQ, "");
- usbvision->requestIntra = 0;
+ usbvision->request_intra = 0;
buffer[0] = 0;
usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
- return errCode;
+ return err_code;
}
/*******************************
int usbvision_power_off(struct usb_usbvision *usbvision)
{
- int errCode = 0;
+ int err_code = 0;
PDEBUG(DBG_FUNC, "");
- errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
- if (errCode == 1) {
+ err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
+ if (err_code == 1)
usbvision->power = 0;
- }
- PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode);
- return errCode;
+ PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code != 1) ? "ERROR" : "power is off", err_code);
+ return err_code;
}
/*
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
- PDEBUG(DBG_FUNC, "isocMode %#02x", format);
+ PDEBUG(DBG_FUNC, "isoc_mode %#02x", format);
if ((format != ISOC_MODE_YUV422)
&& (format != ISOC_MODE_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
+ 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 |
printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
}
- usbvision->isocMode = format;
+ usbvision->isoc_mode = format;
return rc;
}
int usbvision_set_output(struct usb_usbvision *usbvision, int width,
int height)
{
- int errCode = 0;
- int UsbWidth, UsbHeight;
- unsigned int frameRate=0, frameDrop=0;
+ int err_code = 0;
+ int usb_width, usb_height;
+ unsigned int frame_rate = 0, frame_drop = 0;
unsigned char value[4];
- if (!USBVISION_IS_OPERATIONAL(usbvision)) {
+ if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
- }
if (width > MAX_USB_WIDTH) {
- UsbWidth = width / 2;
+ usb_width = width / 2;
usbvision->stretch_width = 2;
- }
- else {
- UsbWidth = width;
+ } else {
+ usb_width = width;
usbvision->stretch_width = 1;
}
if (height > MAX_USB_HEIGHT) {
- UsbHeight = height / 2;
+ usb_height = height / 2;
usbvision->stretch_height = 2;
- }
- else {
- UsbHeight = height;
+ } else {
+ usb_height = 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);
+ RESTRICT_TO_RANGE(usb_width, MIN_FRAME_WIDTH, MAX_USB_WIDTH);
+ usb_width &= ~(MIN_FRAME_WIDTH-1);
+ RESTRICT_TO_RANGE(usb_height, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT);
+ usb_height &= ~(1);
PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d",
- UsbWidth, UsbHeight, width, height,
+ usb_width, usb_height, 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
+ if ((usb_width != usbvision->curwidth) || (usb_height != usbvision->curheight)) {
+ value[0] = usb_width & 0xff; /* LSB */
+ value[1] = (usb_width >> 8) & 0x03; /* MSB */
+ value[2] = usb_height & 0xff; /* LSB */
+ value[3] = (usb_height >> 8) & 0x03; /* MSB */
- errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
+ err_code = 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) {
+ if (err_code < 0) {
dev_err(&usbvision->dev->dev,
- "%s failed: error %d\n", __func__, errCode);
- return errCode;
+ "%s failed: error %d\n", __func__, err_code);
+ return err_code;
}
- usbvision->curwidth = usbvision->stretch_width * UsbWidth;
- usbvision->curheight = usbvision->stretch_height * UsbHeight;
+ usbvision->curwidth = usbvision->stretch_width * usb_width;
+ usbvision->curheight = usbvision->stretch_height * usb_height;
}
- 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->isoc_mode == ISOC_MODE_YUV422)
+ frame_rate = (usbvision->isoc_packet_size * 1000) / (usb_width * usb_height * 2);
+ else if (usbvision->isoc_mode == ISOC_MODE_YUV420)
+ frame_rate = (usbvision->isoc_packet_size * 1000) / ((usb_width * usb_height * 12) / 8);
+ else
+ frame_rate = 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;
- }
+ if (usbvision->tvnorm_id & V4L2_STD_625_50)
+ frame_drop = frame_rate * 32 / 25 - 1;
+ else if (usbvision->tvnorm_id & V4L2_STD_525_60)
+ frame_drop = frame_rate * 32 / 30 - 1;
- RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX);
+ RESTRICT_TO_RANGE(frame_drop, FRAMERATE_MIN, FRAMERATE_MAX);
- PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop);
+ PDEBUG(DBG_FUNC, "frame_rate %d fps, frame_drop %d", frame_rate, frame_drop);
- frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled
+ frame_drop = 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;
+ /* frame_drop = 7; => frame_phase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ...
+ => frame_skip = 4;
+ => frame_rate = (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;
+ frame_drop = 9; => frame_phase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ...
+ => frame_skip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ...
+ => frame_rate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125;
*/
- errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop);
- return errCode;
+ err_code = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frame_drop);
+ return err_code;
}
{
int i;
- /*needs to be page aligned cause the buffers can be mapped individually! */
- usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth *
+ /* 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);
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))) {
+ usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
+ if (usbvision->fbuf)
break;
- }
usbvision->num_frames--;
}
/* 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].grabstate = frame_state_unused;
usbvision->frame[i].data = usbvision->fbuf +
i * usbvision->max_frame_size;
/*
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);
+ PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)",
+ usbvision->num_frames, usbvision->max_frame_size);
return usbvision->num_frames;
}
void usbvision_frames_free(struct usb_usbvision *usbvision)
{
/* Have to free all that memory */
- PDEBUG(DBG_FUNC, "free %d frames",usbvision->num_frames);
+ PDEBUG(DBG_FUNC, "free %d frames", usbvision->num_frames);
if (usbvision->fbuf != NULL) {
usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
INIT_LIST_HEAD(&(usbvision->outqueue));
for (i = 0; i < USBVISION_NUMFRAMES; i++) {
- usbvision->frame[i].grabstate = FrameState_Unused;
+ usbvision->frame[i].grabstate = frame_state_unused;
usbvision->frame[i].bytes_read = 0;
}
}
/* stop reading from the device */
- usbvision->streaming = Stream_Interrupt;
+ usbvision->streaming = stream_interrupt;
ret = wait_event_timeout(usbvision->wait_stream,
- (usbvision->streaming == Stream_Idle),
+ (usbvision->streaming == stream_idle),
msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES));
return ret;
}
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; //
+ 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;
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->bridge_type == BRIDGE_NT1004) {
+ value[0] = 20; /* PCM Threshold 1 */
+ value[1] = 12; /* PCM Threshold 2 */
+ value[2] = 255; /* Distortion Threshold inter */
+ value[3] = 255; /* Distortion Threshold intra */
+ value[4] = 43; /* Max Distortion inter */
+ value[5] = 43; /* Max Distortion intra */
+ } else {
+ value[0] = 20; /* PCM Threshold 1 */
+ value[1] = 12; /* PCM Threshold 2 */
+ value[2] = 255; /* Distortion Threshold d7-d0 */
+ value[3] = 0; /* Distortion Threshold d11-d8 */
+ value[4] = 43; /* Max Distortion d7-d0 */
+ value[5] = 0; /* Max Distortion d8 */
}
if (!USBVISION_IS_OPERATIONAL(usbvision))
if (rc < 0) {
printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
- return rc;
}
-
-
return rc;
}
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) {
+ if (usbvision_device_data[usbvision->dev_model].vin_reg1_override) {
+ value[0] = usbvision_device_data[usbvision->dev_model].vin_reg1;
+ } else if (usbvision_device_data[usbvision->dev_model].codec == CODEC_SAA7113) {
/* SAA7113 uses 8 bit output */
value[0] = USBVISION_8_422_SYNC;
} else {
}
- if (usbvision->tvnormId & V4L2_STD_PAL) {
+ if (usbvision->tvnorm_id & V4L2_STD_PAL) {
value[0] = 0xC0;
- value[1] = 0x02; //0x02C0 -> 704 Input video line length
+ value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */
value[2] = 0x20;
- value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
+ value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */
value[4] = 0x60;
- value[5] = 0x00; //0x0060 -> 96 Input video h offset
+ 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[7] = 0x00; /* 0x0016 -> 22 Input video v offset */
+ } else if (usbvision->tvnorm_id & V4L2_STD_SECAM) {
value[0] = 0xC0;
- value[1] = 0x02; //0x02C0 -> 704 Input video line length
+ value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */
value[2] = 0x20;
- value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
+ value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */
value[4] = 0x01;
- value[5] = 0x00; //0x0001 -> 01 Input video h offset
+ value[5] = 0x00; /* 0x0001 -> 01 Input video h offset */
value[6] = 0x01;
- value[7] = 0x00; //0x0001 -> 01 Input video v offset
+ 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[1] = 0x02; /* 0x02D0 -> 720 Input video line length */
value[2] = 0xF0;
- value[3] = 0x00; //0x00F0 -> 240 Input video number of lines
+ value[3] = 0x00; /* 0x00F0 -> 240 Input video number of lines */
value[4] = 0x50;
- value[5] = 0x00; //0x0050 -> 80 Input video h offset
+ value[5] = 0x00; /* 0x0050 -> 80 Input video h offset */
value[6] = 0x10;
- value[7] = 0x00; //0x0010 -> 16 Input video v offset
+ 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 (usbvision_device_data[usbvision->dev_model].x_offset >= 0) {
+ value[4] = usbvision_device_data[usbvision->dev_model].x_offset & 0xff;
+ value[5] = (usbvision_device_data[usbvision->dev_model].x_offset & 0x0300) >> 8;
}
- if (adjust_X_Offset != -1) {
- value[4] = adjust_X_Offset & 0xff;
- value[5] = (adjust_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 (usbvision_device_data[usbvision->dev_model].y_offset >= 0) {
+ value[6] = usbvision_device_data[usbvision->dev_model].y_offset & 0xff;
+ value[7] = (usbvision_device_data[usbvision->dev_model].y_offset & 0x0300) >> 8;
}
- if (adjust_Y_Offset != -1) {
- value[6] = adjust_Y_Offset & 0xff;
- value[7] = (adjust_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),
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 */
+ if (usbvision_device_data[usbvision->dev_model].dvi_yuv_override) {
+ dvi_yuv_value = usbvision_device_data[usbvision->dev_model].dvi_yuv;
+ } else if (usbvision_device_data[usbvision->dev_model].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));
+ return usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value);
}
int rc;
unsigned char value[8];
- if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
+ if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) {
value[0] = 0x42;
value[1] = 0x71;
value[2] = 0xff;
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 {
+ /* 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;
/* 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
+ * 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
+ * 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
+ * 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))
}
/* Restart the video buffer logic */
- if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
- USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0)
+ rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
+ USBVISION_RES_FDL | USBVISION_RES_VDW);
+ if (rc < 0)
return rc;
rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00);
int usbvision_power_on(struct usb_usbvision *usbvision)
{
- int errCode = 0;
+ int err_code = 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_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_SSPND_EN | USBVISION_PWR_VID);
+ err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
+ USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2);
+ if (err_code == 1)
usbvision->power = 1;
- }
- PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode);
- return errCode;
+ PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code < 0) ? "ERROR" : "power is on", err_code);
+ return err_code;
}
* usbvision timer stuff
*/
-// to call usbvision_power_off from task queue
+/* 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);
+ struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, power_off_work);
PDEBUG(DBG_FUNC, "");
- if(mutex_lock_interruptible(&usbvision->lock)) {
+ if (mutex_lock_interruptible(&usbvision->v4l2_lock))
return;
- }
-
- if(usbvision->user == 0) {
+ if (usbvision->user == 0) {
usbvision_i2c_unregister(usbvision);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
}
- mutex_unlock(&usbvision->lock);
+ mutex_unlock(&usbvision->v4l2_lock);
}
-static void usbvision_powerOffTimer(unsigned long data)
+static void usbvision_power_off_timer(unsigned long data)
{
- struct usb_usbvision *usbvision = (void *) 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);
+ del_timer(&usbvision->power_off_timer);
+ INIT_WORK(&usbvision->power_off_work, call_usbvision_power_off);
+ (void) schedule_work(&usbvision->power_off_work);
}
-void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision)
+void usbvision_init_power_off_timer(struct usb_usbvision *usbvision)
{
- init_timer(&usbvision->powerOffTimer);
- usbvision->powerOffTimer.data = (long) usbvision;
- usbvision->powerOffTimer.function = usbvision_powerOffTimer;
+ init_timer(&usbvision->power_off_timer);
+ usbvision->power_off_timer.data = (long)usbvision;
+ usbvision->power_off_timer.function = usbvision_power_off_timer;
}
-void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision)
+void usbvision_set_power_off_timer(struct usb_usbvision *usbvision)
{
- mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
+ mod_timer(&usbvision->power_off_timer, jiffies + USBVISION_POWEROFF_TIME);
}
-void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision)
+void usbvision_reset_power_off_timer(struct usb_usbvision *usbvision)
{
- if (timer_pending(&usbvision->powerOffTimer)) {
- del_timer(&usbvision->powerOffTimer);
- }
+ if (timer_pending(&usbvision->power_off_timer))
+ del_timer(&usbvision->power_off_timer);
}
/*
*/
int usbvision_begin_streaming(struct usb_usbvision *usbvision)
{
- int errCode = 0;
-
- if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
+ if (usbvision->isoc_mode == ISOC_MODE_COMPRESS)
usbvision_init_compression(usbvision);
- }
- errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
- usbvision->Vin_Reg2_Preset);
- return errCode;
+ return usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
+ USBVISION_NOHVALID | usbvision->vin_reg2_preset);
}
/*
{
int ret;
- if (
- (ret =
- usbvision_write_reg(usbvision, USBVISION_PWR_REG,
- USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
+ ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
+ USBVISION_SSPND_EN | USBVISION_PWR_VID);
+ if (ret < 0)
return ret;
- if (
- (ret =
- usbvision_write_reg(usbvision, USBVISION_PWR_REG,
+ ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_PWR_VID |
- USBVISION_RES2)) < 0)
+ USBVISION_RES2);
+ if (ret < 0)
return ret;
- if (
- (ret =
- usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
+ ret = usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
- usbvision->Vin_Reg2_Preset)) < 0) return ret;
+ usbvision->vin_reg2_preset);
+ if (ret < 0)
+ return ret;
/* TODO: schedule timeout */
- while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) & 0x01) != 1);
+ 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");
+ printk(KERN_ERR "usbvision_audio_off: can't write reg\n");
return -1;
}
- usbvision->AudioMute = 0;
- usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
+ usbvision->audio_mute = 0;
+ usbvision->audio_channel = USBVISION_AUDIO_MUTE;
return 0;
}
-int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
+int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel)
{
- if (!usbvision->AudioMute) {
- if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
+ if (!usbvision->audio_mute) {
+ if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, audio_channel) < 0) {
printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
return -1;
}
}
- usbvision->AudioChannel = AudioChannel;
+ usbvision->audio_channel = audio_channel;
return 0;
}
-int usbvision_setup(struct usb_usbvision *usbvision,int format)
+int usbvision_setup(struct usb_usbvision *usbvision, int format)
{
usbvision_set_video_format(usbvision, format);
usbvision_set_dram_settings(usbvision);
int usbvision_set_alternate(struct usb_usbvision *dev)
{
- int errCode, prev_alt = dev->ifaceAlt;
+ int err_code, prev_alt = dev->iface_alt;
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->iface_alt = 0;
+ for (i = 0; i < dev->num_alt; i++)
+ if (dev->alt_max_pkt_size[i] > dev->alt_max_pkt_size[dev->iface_alt])
+ dev->iface_alt = i;
+
+ if (dev->iface_alt != prev_alt) {
+ dev->isoc_packet_size = dev->alt_max_pkt_size[dev->iface_alt];
+ PDEBUG(DBG_FUNC, "setting alternate %d with max_packet_size=%u",
+ dev->iface_alt, dev->isoc_packet_size);
+ err_code = usb_set_interface(dev->dev, dev->iface, dev->iface_alt);
+ if (err_code < 0) {
dev_err(&dev->dev->dev,
"cannot change alternate number to %d (error=%i)\n",
- dev->ifaceAlt, errCode);
- return errCode;
+ dev->iface_alt, err_code);
+ return err_code;
}
}
- PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isocPacketSize);
+ PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isoc_packet_size);
return 0;
}
int usbvision_init_isoc(struct usb_usbvision *usbvision)
{
struct usb_device *dev = usbvision->dev;
- int bufIdx, errCode, regValue;
+ int buf_idx, err_code, reg_value;
int sb_size;
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EFAULT;
- usbvision->curFrame = NULL;
+ usbvision->cur_frame = 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;
+ err_code = usbvision_set_alternate(usbvision);
+ if (err_code < 0) {
+ usbvision->last_error = err_code;
return -EBUSY;
}
- sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;
+ sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size;
- regValue = (16 - usbvision_read_reg(usbvision,
+ reg_value = (16 - usbvision_read_reg(usbvision,
USBVISION_ALTER_REG)) & 0x0F;
- usbvision->usb_bandwidth = regValue >> 1;
+ usbvision->usb_bandwidth = reg_value >> 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++) {
+ for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) {
int j, k;
struct urb *urb;
"%s: usb_alloc_urb() failed\n", __func__);
return -ENOMEM;
}
- usbvision->sbuf[bufIdx].urb = urb;
- usbvision->sbuf[bufIdx].data =
+ usbvision->sbuf[buf_idx].urb = urb;
+ usbvision->sbuf[buf_idx].data =
usb_alloc_coherent(usbvision->dev,
sb_size,
GFP_KERNEL,
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->transfer_buffer = usbvision->sbuf[buf_idx].data;
+ urb->complete = usbvision_isoc_irq;
urb->number_of_packets = USBVISION_URB_FRAMES;
urb->transfer_buffer_length =
- usbvision->isocPacketSize * USBVISION_URB_FRAMES;
+ usbvision->isoc_packet_size * USBVISION_URB_FRAMES;
for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
- k += usbvision->isocPacketSize) {
+ k += usbvision->isoc_packet_size) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length =
- usbvision->isocPacketSize;
+ usbvision->isoc_packet_size;
}
}
/* Submit all URBs */
- for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
- errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb,
+ for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) {
+ err_code = usb_submit_urb(usbvision->sbuf[buf_idx].urb,
GFP_KERNEL);
- if (errCode) {
+ if (err_code) {
dev_err(&usbvision->dev->dev,
"%s: usb_submit_urb(%d) failed: error %d\n",
- __func__, bufIdx, errCode);
+ __func__, buf_idx, err_code);
}
}
- usbvision->streaming = Stream_Idle;
+ usbvision->streaming = stream_idle;
PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x",
__func__,
usbvision->video_endp);
*/
void usbvision_stop_isoc(struct usb_usbvision *usbvision)
{
- int bufIdx, errCode, regValue;
- int sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;
+ int buf_idx, err_code, reg_value;
+ int sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size;
- if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
+ 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){
+ for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) {
+ usb_kill_urb(usbvision->sbuf[buf_idx].urb);
+ if (usbvision->sbuf[buf_idx].data) {
usb_free_coherent(usbvision->dev,
sb_size,
- usbvision->sbuf[bufIdx].data,
- usbvision->sbuf[bufIdx].urb->transfer_dma);
+ usbvision->sbuf[buf_idx].data,
+ usbvision->sbuf[buf_idx].urb->transfer_dma);
}
- usb_free_urb(usbvision->sbuf[bufIdx].urb);
- usbvision->sbuf[bufIdx].urb = NULL;
+ usb_free_urb(usbvision->sbuf[buf_idx].urb);
+ usbvision->sbuf[buf_idx].urb = NULL;
}
- PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __func__);
- usbvision->streaming = Stream_Off;
+ 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) {
+ usbvision->iface_alt = 0;
+ err_code = usb_set_interface(usbvision->dev, usbvision->iface,
+ usbvision->iface_alt);
+ if (err_code < 0) {
dev_err(&usbvision->dev->dev,
"%s: usb_set_interface() failed: error %d\n",
- __func__, errCode);
- usbvision->last_error = errCode;
+ __func__, err_code);
+ usbvision->last_error = err_code;
}
- regValue = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
- usbvision->isocPacketSize =
- (regValue == 0) ? 0 : (regValue * 64) - 1;
+ reg_value = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
+ usbvision->isoc_packet_size =
+ (reg_value == 0) ? 0 : (reg_value * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d",
- usbvision->isocPacketSize);
+ usbvision->isoc_packet_size);
- usbvision->usb_bandwidth = regValue >> 1;
+ usbvision->usb_bandwidth = reg_value >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec",
usbvision->usb_bandwidth);
}
{
/* 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)
+ 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;
+ /* 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->dev_model].codec) {
+ case CODEC_SAA7113:
+ mode[1] = SAA7115_COMPOSITE2;
+ if (switch_svideo_input) {
+ /* To handle problems with S-Video Input for
+ * some devices. Use switch_svideo_input
+ * parameter when loading the module.*/
+ mode[2] = SAA7115_COMPOSITE1;
+ } else {
mode[2] = SAA7115_SVIDEO1;
- break;
+ }
+ 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]);
projects / mv-sheeva.git / blobdiff