diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 26 | ||||
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx.h | 2 |
2 files changed, 11 insertions, 17 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index da31fd495466..d4f230002747 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -593,7 +593,7 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) dev->capture_type = 0; dev->vbi_read = 0; em28xx_isocdbg("VBI START HEADER!!!\n"); - dev->cur_field = p[2]; + dev->top_field = !(p[2] & 1); p += 4; len -= 4; } else if (p[0] == 0x88 && p[1] == 0x88 && @@ -603,6 +603,8 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) len -= 4; } else if (p[0] == 0x22 && p[1] == 0x5a) { /* start video */ + dev->capture_type = 1; + dev->top_field = !(p[2] & 1); p += 4; len -= 4; } @@ -619,8 +621,7 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) em28xx_isocdbg("dev->vbi_read > vbi_size\n"); } else if ((dev->vbi_read + len) < vbi_size) { /* This entire frame is VBI data */ - if (dev->vbi_read == 0 && - (!(dev->cur_field & 1))) { + if (dev->vbi_read == 0 && dev->top_field) { /* Brand new frame */ if (vbi_buf != NULL) vbi_buffer_filled(dev, @@ -636,12 +637,8 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) if (dev->vbi_read == 0) { vbi_dma_q->pos = 0; - if (vbi_buf != NULL) { - if (dev->cur_field & 1) - vbi_buf->top_field = 0; - else - vbi_buf->top_field = 1; - } + if (vbi_buf != NULL) + vbi_buf->top_field = dev->top_field; } dev->vbi_read += len; @@ -662,7 +659,7 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) if (dev->capture_type == 1) { dev->capture_type = 2; - if (dev->progressive || !(dev->cur_field & 1)) { + if (dev->progressive || dev->top_field) { if (buf != NULL) buffer_filled(dev, dma_q, buf); get_next_buf(dma_q, &buf); @@ -671,12 +668,8 @@ static inline int em28xx_urb_data_copy_vbi(struct em28xx *dev, struct urb *urb) else outp = videobuf_to_vmalloc(&buf->vb); } - if (buf != NULL) { - if (dev->cur_field & 1) - buf->top_field = 0; - else - buf->top_field = 1; - } + if (buf != NULL) + buf->top_field = dev->top_field; dma_q->pos = 0; } @@ -774,6 +767,7 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, urb_init = 1; if (urb_init) { + dev->capture_type = -1; if (em28xx_vbi_supported(dev) == 1) rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, dev->analog_xfer_bulk, diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h index aa413bd76dec..09df56a4570c 100644 --- a/drivers/media/usb/em28xx/em28xx.h +++ b/drivers/media/usb/em28xx/em28xx.h @@ -563,7 +563,7 @@ struct em28xx { /* vbi related state tracking */ int capture_type; int vbi_read; - unsigned char cur_field; + unsigned char top_field:1; unsigned int vbi_width; unsigned int vbi_height; /* lines per field */ |