#endif return -ENXIO; /* No such device or address: missing decompressor */ 
return -ENXIO; /* Missing decompressor */ 
int pwc_decompress(struct pwc_device *pdev){	struct pwc_frame_buf *fbuf;	int n, line, col, stride;	void *yuv, *image;	u16 *src;	u16 *dsty, *dstu, *dstv;	if (pdev == NULL)		return -EFAULT;#if defined(__KERNEL__) && defined(PWC_MAGIC)	if (pdev->magic != PWC_MAGIC) {		Err("pwc_decompress(): magic failed.\n");		return -EFAULT;	}#endif	fbuf = pdev->read_frame;	if (fbuf == NULL)		return -EFAULT;	image = pdev->image_ptr[pdev->fill_image];	if (!image)		return -EFAULT;	yuv = fbuf->data + pdev->frame_header_size;  /* Skip header */	/* Raw format; that's easy... */	if (pdev->vpalette == VIDEO_PALETTE_RAW)	{		memcpy(image, yuv, pdev->frame_size);		return 0;	}	if (pdev->vbandlength == 0) {		/* Uncompressed mode. We copy the data into the output buffer,		   using the viewport size (which may be larger than the image		   size). Unfortunately we have to do a bit of byte stuffing		   to get the desired output format/size.		 */			/*			 * We do some byte shuffling here to go from the			 * native format to YUV420P.			 */			src = (u16 *)yuv;			n = pdev->view.x * pdev->view.y;			/* offset in Y plane */			stride = pdev->view.x * pdev->offset.y + pdev->offset.x;			dsty = (u16 *)(image + stride);			/* offsets in U/V planes */			stride = pdev->view.x * pdev->offset.y / 4 + pdev->offset.x / 2;			dstu = (u16 *)(image + n +         stride);			dstv = (u16 *)(image + n + n / 4 + stride);			/* increment after each line */			stride = (pdev->view.x - pdev->image.x) / 2; /* u16 is 2 bytes */			for (line = 0; line < pdev->image.y; line++) {				for (col = 0; col < pdev->image.x; col += 4) {					*dsty++ = *src++;					*dsty++ = *src++;					if (line & 1)						*dstv++ = *src++;					else						*dstu++ = *src++;				}				dsty += stride;				if (line & 1)					dstv += (stride >> 1);				else					dstu += (stride >> 1);			}	}	else {		/* Compressed; the decompressor routines will write the data		   in planar format immediately.		 */		int flags;                                flags = PWCX_FLAG_PLANAR;                if (pdev->vsize == PSZ_VGA && pdev->vframes == 5 && pdev->vsnapshot)		 {		   printk(KERN_ERR "pwc: Mode Bayer is not supported for now\n");		   flags |= PWCX_FLAG_BAYER;		   return -ENXIO; /* No such device or address: missing decompressor */		 }		switch (pdev->type)		 {#if 0		 		  case 675:		  case 680:		  case 690:		  case 720:		  case 730:		  case 740:		  case 750:		    pwc_dec23_decompress(&pdev->image, &pdev->view, &pdev->offset,				yuv, image,				flags,				pdev->decompress_data, pdev->vbandlength);		    break;		  case 645:		  case 646:		    /* TODO & FIXME */#endif		    		    return -ENXIO; /* No such device or address: missing decompressor */		    break;		 }	}	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/790a19cd5711133f40daad7c55bf148de2b1d12c/pwc-uncompress.c/buggy/drivers/usb/media/pwc/pwc-uncompress.c