diff options
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-cards.c | 4 | ||||
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 5 | ||||
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 40 | ||||
| -rw-r--r-- | drivers/media/video/em28xx/em28xx.h | 3 |
4 files changed, 42 insertions, 10 deletions
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index c9e420e8a61..9011a498e5b 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -2502,6 +2502,10 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, if (em28xx_hint_sensor(dev) < 0) dev->board.is_webcam = 0; + /* It makes no sense to use de-interlacing mode on webcams */ + if (dev->board.is_webcam) + dev->progressive = 1; + /* Do board specific init and eeprom reading */ em28xx_card_setup(dev); diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index 5b78e199abd..339fffdf6bc 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -720,7 +720,10 @@ int em28xx_resolution_set(struct em28xx *dev) { int width, height; width = norm_maxw(dev); - height = norm_maxh(dev) >> 1; + height = norm_maxh(dev); + + if (!dev->progressive) + height >>= norm_maxh(dev); em28xx_set_outfmt(dev); diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 92ee9c64432..ab079d9256c 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -194,15 +194,24 @@ static void em28xx_copy_video(struct em28xx *dev, startread = p; remain = len; - /* Interlaces frame */ - if (buf->top_field) + if (dev->progressive) fieldstart = outp; - else - fieldstart = outp + bytesperline; + else { + /* Interlaces two half frames */ + if (buf->top_field) + fieldstart = outp; + else + fieldstart = outp + bytesperline; + } linesdone = dma_q->pos / bytesperline; currlinedone = dma_q->pos % bytesperline; - offset = linesdone * bytesperline * 2 + currlinedone; + + if (dev->progressive) + offset = linesdone * bytesperline + currlinedone; + else + offset = linesdone * bytesperline * 2 + currlinedone; + startwrite = fieldstart + offset; lencopy = bytesperline - currlinedone; lencopy = lencopy > remain ? remain : lencopy; @@ -376,7 +385,7 @@ static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb) em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2], len, (p[2] & 1) ? "odd" : "even"); - if (!(p[2] & 1)) { + if (dev->progressive || !(p[2] & 1)) { if (buf != NULL) buffer_filled(dev, dma_q, buf); get_next_buf(dma_q, &buf); @@ -689,7 +698,10 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ - f->fmt.pix.field = dev->interlaced ? + if (dev->progressive) + f->fmt.pix.field = V4L2_FIELD_NONE; + else + f->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; mutex_unlock(&dev->lock); @@ -753,7 +765,11 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - f->fmt.pix.field = V4L2_FIELD_INTERLACED; + if (dev->progressive) + f->fmt.pix.field = V4L2_FIELD_NONE; + else + f->fmt.pix.field = dev->interlaced ? + V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; return 0; } @@ -1659,6 +1675,7 @@ static int em28xx_v4l2_open(struct file *filp) struct em28xx *dev; enum v4l2_buf_type fh_type; struct em28xx_fh *fh; + enum v4l2_field field; dev = em28xx_get_device(minor, &fh_type, &radio); @@ -1700,8 +1717,13 @@ static int em28xx_v4l2_open(struct file *filp) dev->users++; + if (dev->progressive) + field = V4L2_FIELD_NONE; + else + field = V4L2_FIELD_INTERLACED; + videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops, - NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, + NULL, &dev->slock, fh->type, field, sizeof(struct em28xx_buffer), fh); mutex_unlock(&dev->lock); diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index 45bd513f62d..8c2dc38bca9 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -484,6 +484,9 @@ struct em28xx { int sensor_xres, sensor_yres; int sensor_xtal; + /* Allows progressive (e. g. non-interlaced) mode */ + int progressive; + /* Vinmode/Vinctl used at the driver */ int vinmode, vinctl; |