From e9e24cee67bf71b929b646387f286e907cbde5fc Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Wed, 20 Aug 2008 20:44:53 -0300 Subject: V4L/DVB (8729): Use DIV_ROUND_UP The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. An extract of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // @haskernel@ @@ @depends on haskernel@ expression n,d; @@ ( - (n + d - 1) / d + DIV_ROUND_UP(n,d) | - (n + (d - 1)) / d + DIV_ROUND_UP(n,d) ) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP((n),d) + DIV_ROUND_UP(n,d) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP(n,(d)) + DIV_ROUND_UP(n,d) // Signed-off-by: Julia Lawall Signed-off-by: Andrew Morton Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_video.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/video/uvc/uvc_video.c') diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 6854ac78a161..03dc3a519e4c 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -655,7 +655,7 @@ static int uvc_init_video_isoc(struct uvc_video_device *video, if (size > UVC_MAX_FRAME_SIZE) return -EINVAL; - npackets = (size + psize - 1) / psize; + npackets = DIV_ROUND_UP(size, psize); if (npackets > UVC_MAX_ISO_PACKETS) npackets = UVC_MAX_ISO_PACKETS; -- cgit v1.2.3 From 08ebd003d90955d78b58bb348a098fee301b8a82 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 29 Aug 2008 17:37:44 -0300 Subject: V4L/DVB (8846): uvcvideo: Supress spurious "EOF in empty payload" trace message Pass the payload size instead of the header size to uvc_video_decode_end() to avoid generating an extra trace message for each frame. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_video.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/media/video/uvc/uvc_video.c') diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 03dc3a519e4c..593aebffe57d 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -455,7 +455,8 @@ static void uvc_video_decode_isoc(struct urb *urb, urb->iso_frame_desc[i].actual_length - ret); /* Process the header again. */ - uvc_video_decode_end(video, buf, mem, ret); + uvc_video_decode_end(video, buf, mem, + urb->iso_frame_desc[i].actual_length); if (buf->state == UVC_BUF_STATE_DONE || buf->state == UVC_BUF_STATE_ERROR) @@ -512,7 +513,7 @@ static void uvc_video_decode_bulk(struct urb *urb, video->bulk.payload_size >= video->bulk.max_payload_size) { if (!video->bulk.skip_payload && buf != NULL) { uvc_video_decode_end(video, buf, video->bulk.header, - video->bulk.header_size); + video->bulk.payload_size); if (buf->state == UVC_BUF_STATE_DONE || buf->state == UVC_BUF_STATE_ERROR) buf = uvc_queue_next_buffer(&video->queue, buf); -- cgit v1.2.3 From d63beb9ef004ff9587b3c466361276254d57d7a7 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 15 Sep 2008 22:24:29 -0300 Subject: V4L/DVB (9031): uvcvideo: Fix incomplete frame drop when switching to a variable size format. When streaming in a fixed size format the driver sets a flag in the uvc_queue structure to drop incomplete incoming frames. The flag wasn't cleared when switching to a variable size format, which resulted in a broken 'MJPEG after YUV'. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_video.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/media/video/uvc/uvc_video.c') diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 593aebffe57d..b7bb23820d80 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -971,6 +971,11 @@ int uvc_video_enable(struct uvc_video_device *video, int enable) return 0; } + if (video->streaming->cur_format->flags & UVC_FMT_FLAG_COMPRESSED) + video->queue.flags &= ~UVC_QUEUE_DROP_INCOMPLETE; + else + video->queue.flags |= UVC_QUEUE_DROP_INCOMPLETE; + if ((ret = uvc_queue_enable(&video->queue, 1)) < 0) return ret; -- cgit v1.2.3