uvcvideo: MPEG2-TS supportuvcvideo-wip-mpeg

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

5 files changed, 18 insertions, 4 deletions

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 6bee9d9..572415d 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -435,6 +435,7 @@ static int uvc_parse_format(struct uvc_device *dev,
 		format->fcc = V4L2_PIX_FMT_MPEG;
 		format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
 		format->bpp = 0;
+		format->psize = 188;
 		ftype = 0;
 
 		/* Create a dummy frame descriptor. */
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 18a91fa..b1a973d 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -36,6 +36,16 @@
  * the driver.
  */
 
+unsigned int uvc_queue_frame_size(const struct uvc_format *format,
+		const struct uvc_streaming_control *ctrl)
+{
+	if (!(format->flags & UVC_FMT_FLAG_STREAM) ||
+	    (ctrl->bmFramingInfo & UVC_PC_FRAMING_INFO_FID))
+		return ctrl->dwMaxVideoFrameSize;
+	else
+		return format->psize * 500;
+}
+
 /* -----------------------------------------------------------------------------
  * videobuf2 queue operations
  */
@@ -53,7 +63,7 @@ static int uvc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 
 	*nplanes = 1;
 
-	sizes[0] = stream->ctrl.dwMaxVideoFrameSize;
+	sizes[0] = uvc_queue_frame_size(stream->cur_format, &stream->ctrl);
 
 	return 0;
 }
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index d6aa402..0c525c1 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -247,7 +247,7 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	fmt->fmt.pix.height = frame->wHeight;
 	fmt->fmt.pix.field = V4L2_FIELD_NONE;
 	fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
-	fmt->fmt.pix.sizeimage = probe->dwMaxVideoFrameSize;
+	fmt->fmt.pix.sizeimage = uvc_queue_frame_size(format, probe);
 	fmt->fmt.pix.colorspace = format->colorspace;
 	fmt->fmt.pix.priv = 0;
 
@@ -284,7 +284,7 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream,
 	fmt->fmt.pix.height = frame->wHeight;
 	fmt->fmt.pix.field = V4L2_FIELD_NONE;
 	fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
-	fmt->fmt.pix.sizeimage = stream->ctrl.dwMaxVideoFrameSize;
+	fmt->fmt.pix.sizeimage = uvc_queue_frame_size(format, &stream->ctrl);
 	fmt->fmt.pix.colorspace = format->colorspace;
 	fmt->fmt.pix.priv = 0;
 
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 4bdad38..e3c388e 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -1475,7 +1475,7 @@ static int uvc_init_video_isoc(struct uvc_streaming *stream,
 	u32 size;
 
 	psize = uvc_endpoint_max_bpi(stream->dev->udev, ep);
-	size = stream->ctrl.dwMaxVideoFrameSize;
+	size = uvc_queue_frame_size(stream->cur_format, &stream->ctrl);
 
 	npackets = uvc_alloc_urb_buffers(stream, size, psize, gfp_flags);
 	if (npackets == 0)
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index fc0d30f..7d540d8 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -312,6 +312,7 @@ struct uvc_format {
 	__u8 colorspace;
 	__u32 fcc;
 	__u32 flags;
+	__u32 psize;
 
 	char name[32];
 
@@ -641,6 +642,8 @@ static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
 {
 	return vb2_is_streaming(&queue->queue);
 }
+unsigned int uvc_queue_frame_size(const struct uvc_format *format,
+		const struct uvc_streaming_control *ctrl);
 
 /* V4L2 interface */
 extern const struct v4l2_file_operations uvc_fops;