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[media] media: videobuf2: Replace v4l2-specific data with vb2 data

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Simple changes that replace v4l2-specific data with vb2 data
in videobuf2-core.

enum v4l2_buf_type --> int
enum v4l2_memory --> enum vb2_memory
VIDEO_MAX_FRAME --> VB2_MAX_FRAME
VIDEO_MAX_PLANES --> VB2_MAX_PLANES
struct v4l2_fh *owner --> void *owner
V4L2_TYPE_IS_MULTIPLANAR() --> is_multiplanar
V4L2_TYPE_IS_OUTPUT() --> is_output

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>
This commit is contained in:
Junghak Sung 2015-10-06 06:37:47 -03:00 committed by Mauro Carvalho Chehab
parent 33119e80c3
commit bed04f9342
4 changed files with 106 additions and 71 deletions
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131
drivers/media/v4l2-core/videobuf2-core.c
View File

@ -193,7 +193,7 @@ static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
{
struct vb2_queue *q = vb->vb2_queue;
enum dma_data_direction dma_dir =
V4L2_TYPE_IS_OUTPUT(q->type) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
q->is_output ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
void *mem_priv;
int plane;
@ -347,7 +347,7 @@ static void __setup_offsets(struct vb2_queue *q, unsigned int n)
*
* Returns the number of buffers successfully allocated.
*/
static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes)
{
unsigned int buffer;
@ -370,7 +370,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
vb->memory = memory;
/* Allocate video buffer memory for the MMAP type */
if (memory == V4L2_MEMORY_MMAP) {
if (memory == VB2_MEMORY_MMAP) {
ret = __vb2_buf_mem_alloc(vb);
if (ret) {
dprintk(1, "failed allocating memory for "
@ -397,7 +397,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
}
__setup_lengths(q, buffer);
if (memory == V4L2_MEMORY_MMAP)
if (memory == VB2_MEMORY_MMAP)
__setup_offsets(q, buffer);
dprintk(1, "allocated %d buffers, %d plane(s) each\n",
@ -421,9 +421,9 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
continue;
/* Free MMAP buffers or release USERPTR buffers */
if (q->memory == V4L2_MEMORY_MMAP)
if (q->memory == VB2_MEMORY_MMAP)
__vb2_buf_mem_free(vb);
else if (q->memory == V4L2_MEMORY_DMABUF)
else if (q->memory == VB2_MEMORY_DMABUF)
__vb2_buf_dmabuf_put(vb);
else
__vb2_buf_userptr_put(vb);
@ -562,7 +562,7 @@ static int __verify_planes_array(struct vb2_buffer *vb, const struct v4l2_buffer
return -EINVAL;
}
if (b->length < vb->num_planes || b->length > VIDEO_MAX_PLANES) {
if (b->length < vb->num_planes || b->length > VB2_MAX_PLANES) {
dprintk(1, "incorrect planes array length, "
"expected %d, got %d\n", vb->num_planes, b->length);
return -EINVAL;
@ -586,8 +586,8 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
for (plane = 0; plane < vb->num_planes; ++plane) {
length = (b->memory == V4L2_MEMORY_USERPTR ||
b->memory == V4L2_MEMORY_DMABUF)
length = (b->memory == VB2_MEMORY_USERPTR ||
b->memory == VB2_MEMORY_DMABUF)
? b->m.planes[plane].length
: vb->planes[plane].length;
bytesused = b->m.planes[plane].bytesused
@ -601,7 +601,7 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
return -EINVAL;
}
} else {
length = (b->memory == V4L2_MEMORY_USERPTR)
length = (b->memory == VB2_MEMORY_USERPTR)
? b->length : vb->planes[0].length;
if (b->bytesused > length)
@ -670,7 +670,7 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
b->reserved2 = 0;
b->reserved = 0;
if (V4L2_TYPE_IS_MULTIPLANAR(q->type)) {
if (q->is_multiplanar) {
/*
* Fill in plane-related data if userspace provided an array
* for it. The caller has already verified memory and size.
@ -682,11 +682,11 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
pdst->bytesused = psrc->bytesused;
pdst->length = psrc->length;
if (q->memory == V4L2_MEMORY_MMAP)
if (q->memory == VB2_MEMORY_MMAP)
pdst->m.mem_offset = psrc->m.offset;
else if (q->memory == V4L2_MEMORY_USERPTR)
else if (q->memory == VB2_MEMORY_USERPTR)
pdst->m.userptr = psrc->m.userptr;
else if (q->memory == V4L2_MEMORY_DMABUF)
else if (q->memory == VB2_MEMORY_DMABUF)
pdst->m.fd = psrc->m.fd;
pdst->data_offset = psrc->data_offset;
memset(pdst->reserved, 0, sizeof(pdst->reserved));
@ -698,11 +698,11 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
*/
b->length = vb->planes[0].length;
b->bytesused = vb->planes[0].bytesused;
if (q->memory == V4L2_MEMORY_MMAP)
if (q->memory == VB2_MEMORY_MMAP)
b->m.offset = vb->planes[0].m.offset;
else if (q->memory == V4L2_MEMORY_USERPTR)
else if (q->memory == VB2_MEMORY_USERPTR)
b->m.userptr = vb->planes[0].m.userptr;
else if (q->memory == V4L2_MEMORY_DMABUF)
else if (q->memory == VB2_MEMORY_DMABUF)
b->m.fd = vb->planes[0].m.fd;
}
@ -826,10 +826,10 @@ static int __verify_dmabuf_ops(struct vb2_queue *q)
* passed to a buffer operation are compatible with the queue.
*/
static int __verify_memory_type(struct vb2_queue *q,
enum v4l2_memory memory, enum v4l2_buf_type type)
enum vb2_memory memory, unsigned int type)
{
if (memory != V4L2_MEMORY_MMAP && memory != V4L2_MEMORY_USERPTR &&
memory != V4L2_MEMORY_DMABUF) {
if (memory != VB2_MEMORY_MMAP && memory != VB2_MEMORY_USERPTR &&
memory != VB2_MEMORY_DMABUF) {
dprintk(1, "unsupported memory type\n");
return -EINVAL;
}
@ -843,17 +843,17 @@ static int __verify_memory_type(struct vb2_queue *q,
* Make sure all the required memory ops for given memory type
* are available.
*/
if (memory == V4L2_MEMORY_MMAP && __verify_mmap_ops(q)) {
if (memory == VB2_MEMORY_MMAP && __verify_mmap_ops(q)) {
dprintk(1, "MMAP for current setup unsupported\n");
return -EINVAL;
}
if (memory == V4L2_MEMORY_USERPTR && __verify_userptr_ops(q)) {
if (memory == VB2_MEMORY_USERPTR && __verify_userptr_ops(q)) {
dprintk(1, "USERPTR for current setup unsupported\n");
return -EINVAL;
}
if (memory == V4L2_MEMORY_DMABUF && __verify_dmabuf_ops(q)) {
if (memory == VB2_MEMORY_DMABUF && __verify_dmabuf_ops(q)) {
dprintk(1, "DMABUF for current setup unsupported\n");
return -EINVAL;
}
@ -909,7 +909,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
* are not in use and can be freed.
*/
mutex_lock(&q->mmap_lock);
if (q->memory == V4L2_MEMORY_MMAP && __buffers_in_use(q)) {
if (q->memory == VB2_MEMORY_MMAP && __buffers_in_use(q)) {
mutex_unlock(&q->mmap_lock);
dprintk(1, "memory in use, cannot free\n");
return -EBUSY;
@ -937,7 +937,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
/*
* Make sure the requested values and current defaults are sane.
*/
num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME);
num_buffers = min_t(unsigned int, req->count, VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed);
memset(q->plane_sizes, 0, sizeof(q->plane_sizes));
memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
@ -1003,7 +1003,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
* to the userspace.
*/
req->count = allocated_buffers;
q->waiting_for_buffers = !V4L2_TYPE_IS_OUTPUT(q->type);
q->waiting_for_buffers = !q->is_output;
return 0;
}
@ -1042,7 +1042,7 @@ static int __create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create
unsigned int num_planes = 0, num_buffers, allocated_buffers;
int ret;
if (q->num_buffers == VIDEO_MAX_FRAME) {
if (q->num_buffers == VB2_MAX_FRAME) {
dprintk(1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@ -1051,10 +1051,10 @@ static int __create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create
memset(q->plane_sizes, 0, sizeof(q->plane_sizes));
memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
q->memory = create->memory;
q->waiting_for_buffers = !V4L2_TYPE_IS_OUTPUT(q->type);
q->waiting_for_buffers = !q->is_output;
}
num_buffers = min(create->count, VIDEO_MAX_FRAME - q->num_buffers);
num_buffers = min(create->count, VB2_MAX_FRAME - q->num_buffers);
/*
* Ask the driver, whether the requested number of buffers, planes per
@ -1305,7 +1305,7 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
unsigned int plane;
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
if (b->memory == V4L2_MEMORY_USERPTR) {
if (b->memory == VB2_MEMORY_USERPTR) {
for (plane = 0; plane < vb->num_planes; ++plane) {
planes[plane].m.userptr =
b->m.planes[plane].m.userptr;
@ -1313,7 +1313,7 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
b->m.planes[plane].length;
}
}
if (b->memory == V4L2_MEMORY_DMABUF) {
if (b->memory == VB2_MEMORY_DMABUF) {
for (plane = 0; plane < vb->num_planes; ++plane) {
planes[plane].m.fd =
b->m.planes[plane].m.fd;
@ -1370,12 +1370,12 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
* the driver should use the allow_zero_bytesused flag to keep
* old userspace applications working.
*/
if (b->memory == V4L2_MEMORY_USERPTR) {
if (b->memory == VB2_MEMORY_USERPTR) {
planes[0].m.userptr = b->m.userptr;
planes[0].length = b->length;
}
if (b->memory == V4L2_MEMORY_DMABUF) {
if (b->memory == VB2_MEMORY_DMABUF) {
planes[0].m.fd = b->m.fd;
planes[0].length = b->length;
}
@ -1435,13 +1435,13 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b)
*/
static int __qbuf_userptr(struct vb2_buffer *vb, const struct v4l2_buffer *b)
{
struct vb2_plane planes[VIDEO_MAX_PLANES];
struct vb2_plane planes[VB2_MAX_PLANES];
struct vb2_queue *q = vb->vb2_queue;
void *mem_priv;
unsigned int plane;
int ret;
enum dma_data_direction dma_dir =
V4L2_TYPE_IS_OUTPUT(q->type) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
q->is_output ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
bool reacquired = vb->planes[0].mem_priv == NULL;
memset(planes, 0, sizeof(planes[0]) * vb->num_planes);
@ -1547,13 +1547,13 @@ err:
*/
static int __qbuf_dmabuf(struct vb2_buffer *vb, const struct v4l2_buffer *b)
{
struct vb2_plane planes[VIDEO_MAX_PLANES];
struct vb2_plane planes[VB2_MAX_PLANES];
struct vb2_queue *q = vb->vb2_queue;
void *mem_priv;
unsigned int plane;
int ret;
enum dma_data_direction dma_dir =
V4L2_TYPE_IS_OUTPUT(q->type) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
q->is_output ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
bool reacquired = vb->planes[0].mem_priv == NULL;
memset(planes, 0, sizeof(planes[0]) * vb->num_planes);
@ -1700,7 +1700,7 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
dprintk(1, "plane parameters verification failed: %d\n", ret);
return ret;
}
if (b->field == V4L2_FIELD_ALTERNATE && V4L2_TYPE_IS_OUTPUT(q->type)) {
if (b->field == V4L2_FIELD_ALTERNATE && q->is_output) {
/*
* If the format's field is ALTERNATE, then the buffer's field
* should be either TOP or BOTTOM, not ALTERNATE since that
@ -1725,13 +1725,13 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
vbuf->sequence = 0;
switch (q->memory) {
case V4L2_MEMORY_MMAP:
case VB2_MEMORY_MMAP:
ret = __qbuf_mmap(vb, b);
break;
case V4L2_MEMORY_USERPTR:
case VB2_MEMORY_USERPTR:
ret = __qbuf_userptr(vb, b);
break;
case V4L2_MEMORY_DMABUF:
case VB2_MEMORY_DMABUF:
ret = __qbuf_dmabuf(vb, b);
break;
default:
@ -1919,7 +1919,7 @@ static int vb2_internal_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
q->queued_count++;
q->waiting_for_buffers = false;
vb->state = VB2_BUF_STATE_QUEUED;
if (V4L2_TYPE_IS_OUTPUT(q->type)) {
if (q->is_output) {
/*
* For output buffers copy the timestamp if needed,
* and the timecode field and flag if needed.
@ -2138,7 +2138,7 @@ static void __vb2_dqbuf(struct vb2_buffer *vb)
vb->state = VB2_BUF_STATE_DEQUEUED;
/* unmap DMABUF buffer */
if (q->memory == V4L2_MEMORY_DMABUF)
if (q->memory == VB2_MEMORY_DMABUF)
for (i = 0; i < vb->num_planes; ++i) {
if (!vb->planes[i].dbuf_mapped)
continue;
@ -2185,7 +2185,7 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b,
trace_vb2_dqbuf(q, vb);
vbuf = to_vb2_v4l2_buffer(vb);
if (!V4L2_TYPE_IS_OUTPUT(q->type) &&
if (!q->is_output &&
vbuf->flags & V4L2_BUF_FLAG_LAST)
q->last_buffer_dequeued = true;
/* go back to dequeued state */
@ -2400,7 +2400,7 @@ static int vb2_internal_streamoff(struct vb2_queue *q, enum v4l2_buf_type type)
* their normal dequeued state.
*/
__vb2_queue_cancel(q);
q->waiting_for_buffers = !V4L2_TYPE_IS_OUTPUT(q->type);
q->waiting_for_buffers = !q->is_output;
q->last_buffer_dequeued = false;
dprintk(3, "successful\n");
@ -2477,7 +2477,7 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
int ret;
struct dma_buf *dbuf;
if (q->memory != V4L2_MEMORY_MMAP) {
if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@ -2566,7 +2566,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
int ret;
unsigned long length;
if (q->memory != V4L2_MEMORY_MMAP) {
if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@ -2578,7 +2578,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
dprintk(1, "invalid vma flags, VM_SHARED needed\n");
return -EINVAL;
}
if (V4L2_TYPE_IS_OUTPUT(q->type)) {
if (q->is_output) {
if (!(vma->vm_flags & VM_WRITE)) {
dprintk(1, "invalid vma flags, VM_WRITE needed\n");
return -EINVAL;
@ -2639,7 +2639,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
void *vaddr;
int ret;
if (q->memory != V4L2_MEMORY_MMAP) {
if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@ -2698,21 +2698,21 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
poll_wait(file, &fh->wait, wait);
}
if (!V4L2_TYPE_IS_OUTPUT(q->type) && !(req_events & (POLLIN | POLLRDNORM)))
if (!q->is_output && !(req_events & (POLLIN | POLLRDNORM)))
return res;
if (V4L2_TYPE_IS_OUTPUT(q->type) && !(req_events & (POLLOUT | POLLWRNORM)))
if (q->is_output && !(req_events & (POLLOUT | POLLWRNORM)))
return res;
/*
* Start file I/O emulator only if streaming API has not been used yet.
*/
if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ) &&
if (!q->is_output && (q->io_modes & VB2_READ) &&
(req_events & (POLLIN | POLLRDNORM))) {
if (__vb2_init_fileio(q, 1))
return res | POLLERR;
}
if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE) &&
if (q->is_output && (q->io_modes & VB2_WRITE) &&
(req_events & (POLLOUT | POLLWRNORM))) {
if (__vb2_init_fileio(q, 0))
return res | POLLERR;
@ -2741,7 +2741,7 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
* For output streams you can write as long as there are fewer buffers
* queued than there are buffers available.
*/
if (V4L2_TYPE_IS_OUTPUT(q->type) && q->queued_count < q->num_buffers)
if (q->is_output && q->queued_count < q->num_buffers)
return res | POLLOUT | POLLWRNORM;
if (list_empty(&q->done_list)) {
@ -2766,7 +2766,7 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
if (vb && (vb->state == VB2_BUF_STATE_DONE
|| vb->state == VB2_BUF_STATE_ERROR)) {
return (V4L2_TYPE_IS_OUTPUT(q->type)) ?
return (q->is_output) ?
res | POLLOUT | POLLWRNORM :
res | POLLIN | POLLRDNORM;
}
@ -2806,6 +2806,12 @@ int vb2_queue_init(struct vb2_queue *q)
WARN_ON((q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN);
/* Warn that vb2_memory should match with v4l2_memory */
if (WARN_ON(VB2_MEMORY_MMAP != (int)V4L2_MEMORY_MMAP)
|| WARN_ON(VB2_MEMORY_USERPTR != (int)V4L2_MEMORY_USERPTR)
|| WARN_ON(VB2_MEMORY_DMABUF != (int)V4L2_MEMORY_DMABUF))
return -EINVAL;
INIT_LIST_HEAD(&q->queued_list);
INIT_LIST_HEAD(&q->done_list);
spin_lock_init(&q->done_lock);
@ -2815,6 +2821,9 @@ int vb2_queue_init(struct vb2_queue *q)
if (q->buf_struct_size == 0)
q->buf_struct_size = sizeof(struct vb2_v4l2_buffer);
q->is_multiplanar = V4L2_TYPE_IS_MULTIPLANAR(q->type);
q->is_output = V4L2_TYPE_IS_OUTPUT(q->type);
return 0;
}
EXPORT_SYMBOL_GPL(vb2_queue_init);
@ -2879,7 +2888,7 @@ struct vb2_fileio_data {
struct v4l2_requestbuffers req;
struct v4l2_plane p;
struct v4l2_buffer b;
struct vb2_fileio_buf bufs[VIDEO_MAX_FRAME];
struct vb2_fileio_buf bufs[VB2_MAX_FRAME];
unsigned int cur_index;
unsigned int initial_index;
unsigned int q_count;
@ -2939,7 +2948,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* to allocate buffers by itself.
*/
fileio->req.count = count;
fileio->req.memory = V4L2_MEMORY_MMAP;
fileio->req.memory = VB2_MEMORY_MMAP;
fileio->req.type = q->type;
q->fileio = fileio;
ret = __reqbufs(q, &fileio->req);
@ -2971,7 +2980,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Read mode requires pre queuing of all buffers.
*/
if (read) {
bool is_multiplanar = V4L2_TYPE_IS_MULTIPLANAR(q->type);
bool is_multiplanar = q->is_multiplanar;
/*
* Queue all buffers.
@ -3053,7 +3062,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
{
struct vb2_fileio_data *fileio;
struct vb2_fileio_buf *buf;
bool is_multiplanar = V4L2_TYPE_IS_MULTIPLANAR(q->type);
bool is_multiplanar = q->is_multiplanar;
/*
* When using write() to write data to an output video node the vb2 core
* should set timestamps if V4L2_BUF_FLAG_TIMESTAMP_COPY is set. Nobody
@ -3248,7 +3257,7 @@ static int vb2_thread(void *data)
int index = 0;
int ret = 0;
if (V4L2_TYPE_IS_OUTPUT(q->type)) {
if (q->is_output) {
prequeue = q->num_buffers;
set_timestamp =
(q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
@ -3326,7 +3335,7 @@ int vb2_thread_start(struct vb2_queue *q, vb2_thread_fnc fnc, void *priv,
threadio->fnc = fnc;
threadio->priv = priv;
ret = __vb2_init_fileio(q, !V4L2_TYPE_IS_OUTPUT(q->type));
ret = __vb2_init_fileio(q, !q->is_output);
dprintk(3, "file io: vb2_init_fileio result: %d\n", ret);
if (ret)
goto nomem;

33
include/media/videobuf2-core.h
View File

@ -18,6 +18,16 @@
#include <linux/videodev2.h>
#include <linux/dma-buf.h>
#define VB2_MAX_FRAME (32)
#define VB2_MAX_PLANES (8)
enum vb2_memory {
VB2_MEMORY_UNKNOWN = 0,
VB2_MEMORY_MMAP = 1,
VB2_MEMORY_USERPTR = 2,
VB2_MEMORY_DMABUF = 4,
};
struct vb2_alloc_ctx;
struct vb2_fileio_data;
struct vb2_threadio_data;
@ -209,7 +219,7 @@ struct vb2_buffer {
unsigned int type;
unsigned int memory;
unsigned int num_planes;
struct vb2_plane planes[VIDEO_MAX_PLANES];
struct vb2_plane planes[VB2_MAX_PLANES];
/* private: internal use only
*
@ -353,12 +363,13 @@ struct vb2_ops {
void (*buf_queue)(struct vb2_buffer *vb);
};
struct v4l2_fh;
/**
* struct vb2_queue - a videobuf queue
*
* @type: queue type (see V4L2_BUF_TYPE_* in linux/videodev2.h
* @type: private buffer type whose content is defined by the vb2-core
* caller. For example, for V4L2, it should match
* the V4L2_BUF_TYPE_* in include/uapi/linux/videodev2.h
* @io_modes: supported io methods (see vb2_io_modes enum)
* @fileio_read_once: report EOF after reading the first buffer
* @fileio_write_immediately: queue buffer after each write() call
@ -409,6 +420,8 @@ struct v4l2_fh;
* @waiting_for_buffers: used in poll() to check if vb2 is still waiting for
* buffers. Only set for capture queues if qbuf has not yet been
* called since poll() needs to return POLLERR in that situation.
* @is_multiplanar: set if buffer type is multiplanar
* @is_output: set if buffer type is output
* @last_buffer_dequeued: used in poll() and DQBUF to immediately return if the
* last decoded buffer was already dequeued. Set for capture queues
* when a buffer with the V4L2_BUF_FLAG_LAST is dequeued.
@ -416,14 +429,14 @@ struct v4l2_fh;
* @threadio: thread io internal data, used only if thread is active
*/
struct vb2_queue {
enum v4l2_buf_type type;
unsigned int type;
unsigned int io_modes;
unsigned fileio_read_once:1;
unsigned fileio_write_immediately:1;
unsigned allow_zero_bytesused:1;
struct mutex *lock;
struct v4l2_fh *owner;
void *owner;
const struct vb2_ops *ops;
const struct vb2_mem_ops *mem_ops;
@ -435,8 +448,8 @@ struct vb2_queue {
/* private: internal use only */
struct mutex mmap_lock;
enum v4l2_memory memory;
struct vb2_buffer *bufs[VIDEO_MAX_FRAME];
unsigned int memory;
struct vb2_buffer *bufs[VB2_MAX_FRAME];
unsigned int num_buffers;
struct list_head queued_list;
@ -447,13 +460,15 @@ struct vb2_queue {
spinlock_t done_lock;
wait_queue_head_t done_wq;
void *alloc_ctx[VIDEO_MAX_PLANES];
unsigned int plane_sizes[VIDEO_MAX_PLANES];
void *alloc_ctx[VB2_MAX_PLANES];
unsigned int plane_sizes[VB2_MAX_PLANES];
unsigned int streaming:1;
unsigned int start_streaming_called:1;
unsigned int error:1;
unsigned int waiting_for_buffers:1;
unsigned int is_multiplanar:1;
unsigned int is_output:1;
unsigned int last_buffer_dequeued:1;
struct vb2_fileio_data *fileio;

8
include/media/videobuf2-v4l2.h
View File

@ -15,6 +15,14 @@
#include <linux/videodev2.h>
#include <media/videobuf2-core.h>
#if VB2_MAX_FRAME != VIDEO_MAX_FRAME
#error VB2_MAX_FRAME != VIDEO_MAX_FRAME
#endif
#if VB2_MAX_PLANES != VIDEO_MAX_PLANES
#error VB2_MAX_PLANES != VIDEO_MAX_PLANES
#endif
/**
* struct vb2_v4l2_buffer - video buffer information for v4l2
* @vb2_buf: video buffer 2

5
include/trace/events/v4l2.h
View File

@ -5,6 +5,7 @@
#define _TRACE_V4L2_H
#include <linux/tracepoint.h>
#include <media/videobuf2-v4l2.h>
/* Enums require being exported to userspace, for user tool parsing */
#undef EM
@ -203,7 +204,9 @@ DECLARE_EVENT_CLASS(vb2_event_class,
TP_fast_assign(
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
__entry->minor = q->owner ? q->owner->vdev->minor : -1;
struct v4l2_fh *owner = q->owner;
__entry->minor = owner ? owner->vdev->minor : -1;
__entry->queued_count = q->queued_count;
__entry->owned_by_drv_count =
atomic_read(&q->owned_by_drv_count);