/*
* Identify the tm5600/6000 buffer header type and properly handles
*/
-static int copy_packet(struct urb *urb, u32 header, u8 **ptr, u8 *endp,
- u8 *out_p, struct tm6000_buffer **buf)
-{
- struct tm6000_dmaqueue *dma_q = urb->context;
- struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
- u8 c;
- unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
- int rc = 0;
- /* FIXME: move to tm6000-isoc */
- static int last_line = -2, start_line = -2, last_field = -2;
-
- /* FIXME: this is the hardcoded window size
- */
- unsigned int linewidth = (*buf)->vb.width << 1;
-
- if (!dev->isoc_ctl.cmd) {
- c = (header >> 24) & 0xff;
-
- /* split the header fields */
- size = ((header & 0x7e) << 1);
-
- if (size > 0)
- size -= 4;
-
- block = (header >> 7) & 0xf;
- field = (header >> 11) & 0x1;
- line = (header >> 12) & 0x1ff;
- cmd = (header >> 21) & 0x7;
-
- /* Validates header fields */
- if(size > TM6000_URB_MSG_LEN)
- size = TM6000_URB_MSG_LEN;
-
- if (cmd == TM6000_URB_MSG_VIDEO) {
- if ((block+1)*TM6000_URB_MSG_LEN>linewidth)
- cmd = TM6000_URB_MSG_ERR;
-
- /* FIXME: Mounts the image as field0+field1
- * It should, instead, check if the user selected
- * entrelaced or non-entrelaced mode
- */
- pos = ((line << 1) - field - 1) * linewidth +
- block * TM6000_URB_MSG_LEN;
-
- /* Don't allow to write out of the buffer */
- if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) {
- dprintk(dev, V4L2_DEBUG_ISOC,
- "ERR: size=%d, num=%d, line=%d, "
- "field=%d\n",
- size, block, line, field);
-
- cmd = TM6000_URB_MSG_ERR;
- }
- } else {
- pos=0;
- }
-
- /* Prints debug info */
- dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, "
- " line=%d, field=%d\n",
- size, block, line, field);
-
- if ((last_line!=line)&&(last_line+1!=line) &&
- (cmd != TM6000_URB_MSG_ERR) ) {
- if (cmd != TM6000_URB_MSG_VIDEO) {
- dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%d, "
- "size=%d, num=%d, line=%d, field=%d\n",
- cmd, size, block, line, field);
- }
- if (start_line<0)
- start_line=last_line;
- /* Prints debug info */
- dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, "
- "field=%d\n",
- start_line, last_line, field);
-
- if ((start_line<6 && last_line>200) &&
- (last_field != field) ) {
-
- dev->isoc_ctl.nfields++;
- if (dev->isoc_ctl.nfields>=2) {
- dev->isoc_ctl.nfields=0;
-
- /* Announces that a new buffer were filled */
- buffer_filled (dev, dma_q, *buf);
- dprintk(dev, V4L2_DEBUG_ISOC,
- "new buffer filled\n");
- get_next_buf (dma_q, buf);
- if (!*buf)
- return rc;
- out_p = videobuf_to_vmalloc(&((*buf)->vb));
- if (!out_p)
- return rc;
-
- pos = dev->isoc_ctl.pos = 0;
- }
- }
-
- start_line=line;
- last_field=field;
- }
- if (cmd == TM6000_URB_MSG_VIDEO)
- last_line = line;
-
- pktsize = TM6000_URB_MSG_LEN;
- } else {
- /* Continue the last copy */
- cmd = dev->isoc_ctl.cmd;
- size= dev->isoc_ctl.size;
- pos = dev->isoc_ctl.pos;
- pktsize = dev->isoc_ctl.pktsize;
- }
-
- cpysize = (endp-(*ptr) > size) ? size : endp - *ptr;
-
- if (cpysize) {
- /* handles each different URB message */
- switch(cmd) {
- case TM6000_URB_MSG_VIDEO:
- /* Fills video buffer */
- memcpy(&out_p[pos], *ptr, cpysize);
- break;
- case TM6000_URB_MSG_PTS:
- break;
- case TM6000_URB_MSG_AUDIO:
- /* Need some code to process audio */
- printk ("%ld: cmd=%s, size=%d\n", jiffies,
- tm6000_msg_type[cmd],size);
- break;
- case TM6000_URB_MSG_VBI:
- break;
- default:
- dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n",
- tm6000_msg_type[cmd],size);
- }
- }
- if (cpysize<size) {
- /* End of URB packet, but cmd processing is not
- * complete. Preserve the state for a next packet
- */
- dev->isoc_ctl.pos = pos+cpysize;
- dev->isoc_ctl.size= size-cpysize;
- dev->isoc_ctl.cmd = cmd;
- dev->isoc_ctl.pktsize = pktsize-cpysize;
- (*ptr)+=cpysize;
- } else {
- dev->isoc_ctl.cmd = 0;
- (*ptr)+=pktsize;
- }
-
- return rc;
-}
-
static int copy_streams(u8 *data, unsigned long len,
struct urb *urb)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
- u8 *ptr=data, *endp=data+len;
+ u8 *ptr=data, *endp=data+len, c;
unsigned long header=0;
int rc=0;
- struct tm6000_buffer *buf;
- char *outp = NULL;
-
- get_next_buf(dma_q, &buf);
- if (buf)
- outp = videobuf_to_vmalloc(&buf->vb);
+ unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
+ struct tm6000_buffer *vbuf;
+ char *voutp = NULL;
+ unsigned int linewidth;
- if (!outp)
+ /* get video buffer */
+ get_next_buf (dma_q, &vbuf);
+ if (!vbuf)
+ return rc;
+ voutp = videobuf_to_vmalloc(&vbuf->vb);
+ if (!voutp)
return 0;
- for (ptr=data; ptr<endp;) {
+ for (ptr = data; ptr < endp;) {
if (!dev->isoc_ctl.cmd) {
- u8 *p=(u8 *)&dev->isoc_ctl.tmp_buf;
- /* FIXME: This seems very complex
- * It just recovers up to 3 bytes of the header that
- * might be at the previous packet
- */
- if (dev->isoc_ctl.tmp_buf_len) {
- while (dev->isoc_ctl.tmp_buf_len) {
- if ( *(ptr+3-dev->isoc_ctl.tmp_buf_len) == 0x47) {
- break;
- }
- p++;
- dev->isoc_ctl.tmp_buf_len--;
- }
- if (dev->isoc_ctl.tmp_buf_len) {
- memcpy(&header, p,
- dev->isoc_ctl.tmp_buf_len);
- memcpy((u8 *)&header +
+ /* Header */
+ if (dev->isoc_ctl.tmp_buf_len > 0) {
+ /* from last urb or packet */
+ header = dev->isoc_ctl.tmp_buf;
+ if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
+ memcpy ((u8 *)&header +
dev->isoc_ctl.tmp_buf_len,
ptr,
4 - dev->isoc_ctl.tmp_buf_len);
ptr += 4 - dev->isoc_ctl.tmp_buf_len;
- goto HEADER;
}
+ dev->isoc_ctl.tmp_buf_len = 0;
+ } else {
+ if (ptr + 3 >= endp) {
+ /* have incomplete header */
+ dev->isoc_ctl.tmp_buf_len = endp - ptr;
+ memcpy (&dev->isoc_ctl.tmp_buf, ptr,
+ dev->isoc_ctl.tmp_buf_len);
+ return rc;
+ }
+ /* Seek for sync */
+ for (; ptr < endp - 3; ptr++) {
+ if (*(ptr + 3) == 0x47)
+ break;
+ }
+ /* Get message header */
+ header = *(unsigned long *)ptr;
+ ptr += 4;
}
- /* Seek for sync */
- for (;ptr<endp-3;ptr++) {
- if (*(ptr+3)==0x47)
- break;
+ /* split the header fields */
+ c = (header >> 24) & 0xff;
+ size = ((header & 0x7e) << 1);
+ if (size > 0)
+ size -= 4;
+ block = (header >> 7) & 0xf;
+ field = (header >> 11) & 0x1;
+ line = (header >> 12) & 0x1ff;
+ cmd = (header >> 21) & 0x7;
+ /* Validates haeder fields */
+ if (size > TM6000_URB_MSG_LEN)
+ size = TM6000_URB_MSG_LEN;
+ pktsize = TM6000_URB_MSG_LEN;
+ /* calculate position in buffer
+ * and change the buffer
+ */
+ switch (cmd) {
+ case TM6000_URB_MSG_VIDEO:
+ if ((dev->isoc_ctl.vfield != field) &&
+ (field == 1)) {
+ /* Announces that a new buffer
+ * were filled
+ */
+ buffer_filled (dev, dma_q, vbuf);
+ dprintk (dev, V4L2_DEBUG_ISOC,
+ "new buffer filled\n");
+ get_next_buf (dma_q, &vbuf);
+ if (!vbuf)
+ return rc;
+ voutp = videobuf_to_vmalloc (&vbuf->vb);
+ if (!voutp)
+ return rc;
+ }
+ linewidth = vbuf->vb.width << 1;
+ pos = ((line << 1) - field - 1) * linewidth +
+ block * TM6000_URB_MSG_LEN;
+ /* Don't allow to write out of the buffer */
+ if (pos + size > vbuf->vb.size)
+ cmd = TM6000_URB_MSG_ERR;
+ dev->isoc_ctl.vfield = field;
+ break;
+ case TM6000_URB_MSG_AUDIO:
+ case TM6000_URB_MSG_VBI:
+ case TM6000_URB_MSG_PTS:
+ break;
}
-
- if (ptr+3>=endp) {
- dev->isoc_ctl.tmp_buf_len=endp-ptr;
- memcpy (&dev->isoc_ctl.tmp_buf,ptr,
- dev->isoc_ctl.tmp_buf_len);
- dev->isoc_ctl.cmd=0;
- return rc;
+ } else {
+ /* Continue the last copy */
+ cmd = dev->isoc_ctl.cmd;
+ size = dev->isoc_ctl.size;
+ pos = dev->isoc_ctl.pos;
+ pktsize = dev->isoc_ctl.pktsize;
+ }
+ cpysize = (endp - ptr > size) ? size : endp - ptr;
+ if (cpysize) {
+ /* copy data in different buffers */
+ switch (cmd) {
+ case TM6000_URB_MSG_VIDEO:
+ /* Fills video buffer */
+ if (vbuf)
+ memcpy (&voutp[pos], ptr, cpysize);
+ break;
+ case TM6000_URB_MSG_AUDIO:
+ /* Need some code to copy audio buffer */
+ break;
+ case TM6000_URB_MSG_VBI:
+ /* Need some code to copy vbi buffer */
+ break;
+ case TM6000_URB_MSG_PTS:
+ /* Need some code to copy pts */
+ break;
}
-
- /* Get message header */
- header=*(unsigned long *)ptr;
- ptr+=4;
}
-HEADER:
- /* Copy or continue last copy */
- rc=copy_packet(urb,header,&ptr,endp,outp,&buf);
- if (rc<0) {
- buf=NULL;
- printk(KERN_ERR "tm6000: buffer underrun at %ld\n",
- jiffies);
- return rc;
+ if (ptr + pktsize > endp) {
+ /* End of URB packet, but cmd processing is not
+ * complete. Preserve the state for a next packet
+ */
+ dev->isoc_ctl.pos = pos + cpysize;
+ dev->isoc_ctl.size = size - cpysize;
+ dev->isoc_ctl.cmd = cmd;
+ dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
+ ptr += endp - ptr;
+ } else {
+ dev->isoc_ctl.cmd = 0;
+ ptr += pktsize;
}
- if (!buf)
- return 0;
}
-
return 0;
}
+
/*
* Identify the tm5600/6000 buffer header type and properly handles
*/
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
- struct tm6000_buffer *buf;
int i, len=0, rc=1, status;
char *p;
struct urb *urb;
int i;
- dev->isoc_ctl.nfields = -1;
dev->isoc_ctl.buf = NULL;
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb=dev->isoc_ctl.urb[i];
dev->isoc_ctl.urb=NULL;
dev->isoc_ctl.transfer_buffer=NULL;
dev->isoc_ctl.num_bufs = 0;
-
- dev->isoc_ctl.num_bufs=0;
}
/*
git.openpandora.org / pandora-kernel.git / commitdiff