[media] media: videobuf2: Restructure vb2_buffer
Remove v4l2 stuff - v4l2_buf, v4l2_plane - from struct vb2_buffer.
Add new member variables - bytesused, length, offset, userptr, fd,
data_offset - to struct vb2_plane in order to cover all information
of v4l2_plane.
struct vb2_plane {
<snip>
unsigned int bytesused;
unsigned int length;
union {
unsigned int offset;
unsigned long userptr;
int fd;
} m;
unsigned int data_offset;
}
Replace v4l2_buf with new member variables - index, type, memory - which
are common fields for buffer management.
struct vb2_buffer {
<snip>
unsigned int index;
unsigned int type;
unsigned int memory;
unsigned int num_planes;
struct vb2_plane planes[VIDEO_MAX_PLANES];
<snip>
};
v4l2 specific fields - flags, field, timestamp, timecode,
sequence - are moved to vb2_v4l2_buffer in videobuf2-v4l2.c
struct vb2_v4l2_buffer {
struct vb2_buffer vb2_buf;
__u32 flags;
__u32 field;
struct timeval timestamp;
struct v4l2_timecode timecode;
__u32 sequence;
};
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/davinci/vpbe_display.h b/include/media/davinci/vpbe_display.h
index fa0247a..e14a937 100644
--- a/include/media/davinci/vpbe_display.h
+++ b/include/media/davinci/vpbe_display.h
@@ -17,6 +17,7 @@
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-fh.h>
+#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include <media/davinci/vpbe_types.h>
#include <media/davinci/vpbe_osd.h>
@@ -64,7 +65,7 @@
};
struct vpbe_disp_buffer {
- struct vb2_buffer vb;
+ struct vb2_v4l2_buffer vb;
struct list_head list;
};
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index 5c60da9..5a9597d 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -90,7 +90,7 @@
};
struct v4l2_m2m_buffer {
- struct vb2_buffer vb;
+ struct vb2_v4l2_buffer vb;
struct list_head list;
};
@@ -105,9 +105,9 @@
struct v4l2_m2m_ctx *m2m_ctx);
static inline void
-v4l2_m2m_buf_done(struct vb2_buffer *buf, enum vb2_buffer_state state)
+v4l2_m2m_buf_done(struct vb2_v4l2_buffer *buf, enum vb2_buffer_state state)
{
- vb2_buffer_done(buf, state);
+ vb2_buffer_done(&buf->vb2_buf, state);
}
int v4l2_m2m_reqbufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
@@ -160,7 +160,8 @@
void v4l2_m2m_ctx_release(struct v4l2_m2m_ctx *m2m_ctx);
-void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_buffer *vb);
+void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx,
+ struct vb2_v4l2_buffer *vbuf);
/**
* v4l2_m2m_num_src_bufs_ready() - return the number of source buffers ready for
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 19990d7..108fa16 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -111,10 +111,38 @@
int (*mmap)(void *buf_priv, struct vm_area_struct *vma);
};
+/**
+ * struct vb2_plane - plane information
+ * @mem_priv: private data with this plane
+ * @dbuf: dma_buf - shared buffer object
+ * @dbuf_mapped: flag to show whether dbuf is mapped or not
+ * @bytesused: number of bytes occupied by data in the plane (payload)
+ * @length: size of this plane (NOT the payload) in bytes
+ * @mem_offset: when memory in the associated struct vb2_buffer is
+ * VB2_MEMORY_MMAP, equals the offset from the start of
+ * the device memory for this plane (or is a "cookie" that
+ * should be passed to mmap() called on the video node)
+ * @userptr: when memory is VB2_MEMORY_USERPTR, a userspace pointer
+ * pointing to this plane
+ * @fd: when memory is VB2_MEMORY_DMABUF, a userspace file
+ * descriptor associated with this plane
+ * @data_offset: offset in the plane to the start of data; usually 0,
+ * unless there is a header in front of the data
+ * Should contain enough information to be able to cover all the fields
+ * of struct v4l2_plane at videodev2.h
+ */
struct vb2_plane {
void *mem_priv;
struct dma_buf *dbuf;
unsigned int dbuf_mapped;
+ unsigned int bytesused;
+ unsigned int length;
+ union {
+ unsigned int offset;
+ unsigned long userptr;
+ int fd;
+ } m;
+ unsigned int data_offset;
};
/**
@@ -163,43 +191,32 @@
/**
* struct vb2_buffer - represents a video buffer
- * @v4l2_buf: struct v4l2_buffer associated with this buffer; can
- * be read by the driver and relevant entries can be
- * changed by the driver in case of CAPTURE types
- * (such as timestamp)
- * @v4l2_planes: struct v4l2_planes associated with this buffer; can
- * be read by the driver and relevant entries can be
- * changed by the driver in case of CAPTURE types
- * (such as bytesused); NOTE that even for single-planar
- * types, the v4l2_planes[0] struct should be used
- * instead of v4l2_buf for filling bytesused - drivers
- * should use the vb2_set_plane_payload() function for that
* @vb2_queue: the queue to which this driver belongs
+ * @index: id number of the buffer
+ * @type: buffer type
+ * @memory: the method, in which the actual data is passed
* @num_planes: number of planes in the buffer
* on an internal driver queue
+ * @planes: private per-plane information; do not change
* @state: current buffer state; do not change
* @queued_entry: entry on the queued buffers list, which holds all
* buffers queued from userspace
* @done_entry: entry on the list that stores all buffers ready to
* be dequeued to userspace
- * @planes: private per-plane information; do not change
*/
struct vb2_buffer {
- struct v4l2_buffer v4l2_buf;
- struct v4l2_plane v4l2_planes[VIDEO_MAX_PLANES];
-
struct vb2_queue *vb2_queue;
-
+ unsigned int index;
+ unsigned int type;
+ unsigned int memory;
unsigned int num_planes;
+ struct vb2_plane planes[VIDEO_MAX_PLANES];
-/* Private: internal use only */
+ /* Private: internal use only */
enum vb2_buffer_state state;
struct list_head queued_entry;
struct list_head done_entry;
-
- struct vb2_plane planes[VIDEO_MAX_PLANES];
-
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
* Counters for how often these buffer-related ops are
@@ -354,7 +371,8 @@
* @drv_priv: driver private data
* @buf_struct_size: size of the driver-specific buffer structure;
* "0" indicates the driver doesn't want to use a custom buffer
- * structure type, so sizeof(struct vb2_buffer) will is used
+ * structure type. for example, sizeof(struct vb2_v4l2_buffer)
+ * will be used for v4l2.
* @timestamp_flags: Timestamp flags; V4L2_BUF_FLAG_TIMESTAMP_* and
* V4L2_BUF_FLAG_TSTAMP_SRC_*
* @gfp_flags: additional gfp flags used when allocating the buffers.
@@ -573,7 +591,7 @@
unsigned int plane_no, unsigned long size)
{
if (plane_no < vb->num_planes)
- vb->v4l2_planes[plane_no].bytesused = size;
+ vb->planes[plane_no].bytesused = size;
}
/**
@@ -585,7 +603,7 @@
unsigned int plane_no)
{
if (plane_no < vb->num_planes)
- return vb->v4l2_planes[plane_no].bytesused;
+ return vb->planes[plane_no].bytesused;
return 0;
}
@@ -598,7 +616,7 @@
vb2_plane_size(struct vb2_buffer *vb, unsigned int plane_no)
{
if (plane_no < vb->num_planes)
- return vb->v4l2_planes[plane_no].length;
+ return vb->planes[plane_no].length;
return 0;
}
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index d4a4d9a..20d8ad2 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -12,6 +12,34 @@
#ifndef _MEDIA_VIDEOBUF2_V4L2_H
#define _MEDIA_VIDEOBUF2_V4L2_H
+#include <linux/videodev2.h>
#include <media/videobuf2-core.h>
+/**
+ * struct vb2_v4l2_buffer - video buffer information for v4l2
+ * @vb2_buf: video buffer 2
+ * @flags: buffer informational flags
+ * @field: enum v4l2_field; field order of the image in the buffer
+ * @timestamp: frame timestamp
+ * @timecode: frame timecode
+ * @sequence: sequence count of this frame
+ * Should contain enough information to be able to cover all the fields
+ * of struct v4l2_buffer at videodev2.h
+ */
+struct vb2_v4l2_buffer {
+ struct vb2_buffer vb2_buf;
+
+ __u32 flags;
+ __u32 field;
+ struct timeval timestamp;
+ struct v4l2_timecode timecode;
+ __u32 sequence;
+};
+
+/**
+ * to_vb2_v4l2_buffer() - cast struct vb2_buffer * to struct vb2_v4l2_buffer *
+ */
+#define to_vb2_v4l2_buffer(vb) \
+ (container_of(vb, struct vb2_v4l2_buffer, vb2_buf))
+
#endif /* _MEDIA_VIDEOBUF2_V4L2_H */