On 07/31/2015 10:44 AM, Junghak Sung wrote:
> Define enum vb2_buf_type and enum vb2_memory for videobuf2-core. This
> change requires translation functions that could covert v4l2-core stuffs
> to videobuf2-core stuffs in videobuf2-v4l2.c file.
> The v4l2-specific member variables(e.g. type, memory) remains in
> struct vb2_queue for backward compatibility and performance of type
> translation.
>
> Signed-off-by: Junghak Sung <jh1009.s...@samsung.com>
> Signed-off-by: Geunyoung Kim <nenggun....@samsung.com>
> Acked-by: Seung-Woo Kim <sw0312....@samsung.com>
> Acked-by: Inki Dae <inki....@samsung.com>
> ---
> drivers/media/v4l2-core/videobuf2-core.c | 139 +++++++++++---------
> drivers/media/v4l2-core/videobuf2-v4l2.c | 209
> ++++++++++++++++++++----------
> include/media/videobuf2-core.h | 99 +++++++++++---
> include/media/videobuf2-v4l2.h | 12 +-
> 4 files changed, 299 insertions(+), 160 deletions(-)
>
<snip>
> diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c
> b/drivers/media/v4l2-core/videobuf2-v4l2.c
> index 85527e9..22dd19c 100644
> --- a/drivers/media/v4l2-core/videobuf2-v4l2.c
> +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c
> @@ -30,8 +30,46 @@
> #include <media/v4l2-common.h>
> #include <media/videobuf2-v4l2.h>
>
> +#define CREATE_TRACE_POINTS
> #include <trace/events/v4l2.h>
>
> +static const enum vb2_buf_type _tbl_buf_type[] = {
> + [V4L2_BUF_TYPE_VIDEO_CAPTURE] = VB2_BUF_TYPE_VIDEO_CAPTURE,
> + [V4L2_BUF_TYPE_VIDEO_OUTPUT] = VB2_BUF_TYPE_VIDEO_OUTPUT,
> + [V4L2_BUF_TYPE_VIDEO_OVERLAY] = VB2_BUF_TYPE_VIDEO_OVERLAY,
> + [V4L2_BUF_TYPE_VBI_CAPTURE] = VB2_BUF_TYPE_VBI_CAPTURE,
> + [V4L2_BUF_TYPE_VBI_OUTPUT] = VB2_BUF_TYPE_VBI_OUTPUT,
> + [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] =
> VB2_BUF_TYPE_SLICED_VBI_CAPTURE,
> + [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] =
> VB2_BUF_TYPE_SLICED_VBI_OUTPUT,
> + [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] =
> VB2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY,
> + [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] =
> VB2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> + [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] =
> VB2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> + [V4L2_BUF_TYPE_SDR_CAPTURE] = VB2_BUF_TYPE_SDR_CAPTURE,
> + [V4L2_BUF_TYPE_PRIVATE] = VB2_BUF_TYPE_PRIVATE,
> +};
> +
> +static const enum vb2_memory _tbl_memory[] = {
> + [V4L2_MEMORY_MMAP] = VB2_MEMORY_MMAP,
> + [V4L2_MEMORY_USERPTR] = VB2_MEMORY_USERPTR,
> + [V4L2_MEMORY_DMABUF] = VB2_MEMORY_DMABUF,
> +};
> +
> +#define to_vb2_buf_type(type) \
> +({ \
> + enum vb2_buf_type ret = 0; \
> + if( type > 0 && type < ARRAY_SIZE(_tbl_buf_type) ) \
> + ret = (_tbl_buf_type[type]); \
> + ret; \
> +})
> +
> +#define to_vb2_memory(memory) \
> +({ \
> + enum vb2_memory ret = 0; \
> + if( memory > 0 && memory < ARRAY_SIZE(_tbl_memory) ) \
> + ret = (_tbl_memory[memory]); \
> + ret; \
> +})
> +
<snip>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index dc405da..871fcc6 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -15,9 +15,47 @@
> #include <linux/mm_types.h>
> #include <linux/mutex.h>
> #include <linux/poll.h>
> -#include <linux/videodev2.h>
> #include <linux/dma-buf.h>
>
> +#define VB2_MAX_FRAME 32
> +#define VB2_MAX_PLANES 8
> +
> +enum vb2_buf_type {
> + VB2_BUF_TYPE_UNKNOWN = 0,
> + VB2_BUF_TYPE_VIDEO_CAPTURE = 1,
> + VB2_BUF_TYPE_VIDEO_OUTPUT = 2,
> + VB2_BUF_TYPE_VIDEO_OVERLAY = 3,
> + VB2_BUF_TYPE_VBI_CAPTURE = 4,
> + VB2_BUF_TYPE_VBI_OUTPUT = 5,
> + VB2_BUF_TYPE_SLICED_VBI_CAPTURE = 6,
> + VB2_BUF_TYPE_SLICED_VBI_OUTPUT = 7,
> + VB2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,
> + VB2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9,
> + VB2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10,
> + VB2_BUF_TYPE_SDR_CAPTURE = 11,
> + VB2_BUF_TYPE_DVB_CAPTURE = 12,
> + VB2_BUF_TYPE_PRIVATE = 0x80,
> +};
> +
> +enum vb2_memory {
> + VB2_MEMORY_UNKNOWN = 0,
> + VB2_MEMORY_MMAP = 1,
> + VB2_MEMORY_USERPTR = 2,
> + VB2_MEMORY_DMABUF = 4,
> +};
> +
> +#define VB2_TYPE_IS_MULTIPLANAR(type) \
> + ((type) == VB2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \
> + || (type) == VB2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
> +
> +#define VB2_TYPE_IS_OUTPUT(type) \
> + ((type) == VB2_BUF_TYPE_VIDEO_OUTPUT \
> + || (type) == VB2_BUF_TYPE_VIDEO_OUTPUT_MPLANE \
> + || (type) == VB2_BUF_TYPE_VIDEO_OVERLAY \
> + || (type) == VB2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY \
> + || (type) == VB2_BUF_TYPE_VBI_OUTPUT \
> + || (type) == VB2_BUF_TYPE_SLICED_VBI_OUTPUT)
You don't actually need to create vb2_buf_type: unless I am mistaken, all that
the
vb2 core needs to know is if it is a capture or output queue and possibly (not
sure about that) if it is single or multiplanar. So add fields to the vb2_queue
struct
for that information and leave the buf_type to the v4l2 specific header and
code.
You also don't need the _tbl_memory[] array. All you need to do is to check in
videobuf2-v4l2.c that VB2_MEMORY* equals the V4L2_MEMORY_* defines and generate
a #error if not:
#if VB2_MEMORY_MMAP != V4L2_MEMORY_MMAP || VB2_MEMORY_....
#error VB2_MEMORY_* != V4L2_MEMORY_*!
#endif
Regards,
Hans
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