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[media] cx18: Clean up mmap() support for raw YUV 

The initial version of this patch (commit
d5976931639176bb6777755d96b9f8d959f79e9e) had some issues:

 * It didn't correctly calculate the size of the YUV buffer for 4:2:2,
   resulting in capture sometimes being offset by 1/3rd of a picture.

 * There were a lot of variables duplicating information the driver
   already knew, which have been removed.

 * There was an in-kernel format conversion - libv4l can do this one,
   and is the right place to do format conversions anyway.

 * Some magic numbers weren't properly explained.

Fix all these issues, leaving just the move from videobuf to videobuf2
to do.

Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Acked-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Simon Farnsworth 2011-05-03 08:57:40 -03:00 committed by Mauro Carvalho Chehab
parent 81dfea886c
commit 1bf5842fe3
6 changed files with 224 additions and 211 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/media/video/cx18/Kconfig
View File

@ -2,7 +2,6 @@ config VIDEO_CX18
tristate "Conexant cx23418 MPEG encoder support"
depends on VIDEO_V4L2 && DVB_CORE && PCI && I2C && EXPERIMENTAL
select I2C_ALGOBIT
select VIDEOBUF_DVB
select VIDEOBUF_VMALLOC
depends on RC_CORE
select VIDEO_TUNER

8
drivers/media/video/cx18/cx18-driver.h
View File

@ -412,11 +412,11 @@ struct cx18_stream {
u32 pixelformat;
struct list_head vb_capture; /* video capture queue */
spinlock_t vb_lock;
struct v4l2_framebuffer fbuf;
v4l2_std_id tvnorm; /* selected tv norm */
struct timer_list vb_timeout;
int vbwidth;
int vbheight;
struct videobuf_queue vbuf_q;
spinlock_t vbuf_q_lock; /* Protect vbuf_q */
enum v4l2_buf_type vb_type;
};
struct cx18_videobuf_buffer {

167
drivers/media/video/cx18/cx18-fileops.c
View File

@ -598,9 +598,9 @@ ssize_t cx18_v4l2_read(struct file *filp, char __user *buf, size_t count,
if (rc)
return rc;
if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->type == CX18_ENC_STREAM_TYPE_YUV)) {
return videobuf_read_stream(&id->vbuf_q, buf, count, pos, 0,
return videobuf_read_stream(&s->vbuf_q, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
}
@ -629,9 +629,13 @@ unsigned int cx18_v4l2_enc_poll(struct file *filp, poll_table *wait)
CX18_DEBUG_FILE("Encoder poll started capture\n");
}
if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->type == CX18_ENC_STREAM_TYPE_YUV)) {
return videobuf_poll_stream(filp, &id->vbuf_q, wait);
int videobuf_poll = videobuf_poll_stream(filp, &s->vbuf_q, wait);
if (eof && videobuf_poll == POLLERR)
return POLLHUP;
else
return videobuf_poll;
}
/* add stream's waitq to the poll list */
@ -652,7 +656,7 @@ int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
struct cx18_stream *s = &cx->streams[id->type];
int eof = test_bit(CX18_F_S_STREAMOFF, &s->s_flags);
if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->type == CX18_ENC_STREAM_TYPE_YUV)) {
/* Start a capture if there is none */
@ -668,10 +672,10 @@ int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
s->name, rc);
return -EINVAL;
}
CX18_DEBUG_FILE("Encoder poll started capture\n");
CX18_DEBUG_FILE("Encoder mmap started capture\n");
}
return videobuf_mmap_mapper(&id->vbuf_q, vma);
return videobuf_mmap_mapper(&s->vbuf_q, vma);
}
return -EINVAL;
@ -788,142 +792,6 @@ int cx18_v4l2_close(struct file *filp)
return 0;
}
void cx18_dma_free(struct videobuf_queue *q,
struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
{
videobuf_waiton(q, &buf->vb, 0, 0);
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static int cx18_prepare_buffer(struct videobuf_queue *q,
struct cx18_stream *s,
struct cx18_videobuf_buffer *buf,
u32 pixelformat,
unsigned int width, unsigned int height,
enum v4l2_field field)
{
int rc = 0;
/* check settings */
buf->bytes_used = 0;
if ((width < 48) || (height < 32))
return -EINVAL;
buf->vb.size = (width * height * 16 /*fmt->depth*/) >> 3;
if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
return -EINVAL;
/* alloc + fill struct (if changed) */
if (buf->vb.width != width || buf->vb.height != height ||
buf->vb.field != field || s->pixelformat != pixelformat ||
buf->tvnorm != s->tvnorm) {
buf->vb.width = width;
buf->vb.height = height;
buf->vb.field = field;
buf->tvnorm = s->tvnorm;
s->pixelformat = pixelformat;
cx18_dma_free(q, s, buf);
}
if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
return -EINVAL;
if (buf->vb.field == 0)
buf->vb.field = V4L2_FIELD_INTERLACED;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
buf->vb.width = width;
buf->vb.height = height;
buf->vb.field = field;
buf->tvnorm = s->tvnorm;
s->pixelformat = pixelformat;
rc = videobuf_iolock(q, &buf->vb, &s->fbuf);
if (rc != 0)
goto fail;
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx18_dma_free(q, s, buf);
return rc;
}
#define VB_MIN_BUFFERS 32
#define VB_MIN_BUFSIZE 0x208000
static int buffer_setup(struct videobuf_queue *q,
unsigned int *count, unsigned int *size)
{
struct cx18_open_id *id = q->priv_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
*size = 2 * s->vbwidth * s->vbheight;
if (*count == 0)
*count = VB_MIN_BUFFERS;
while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
(*count)--;
q->field = V4L2_FIELD_INTERLACED;
q->last = V4L2_FIELD_INTERLACED;
return 0;
}
static int buffer_prepare(struct videobuf_queue *q,
struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_open_id *id = q->priv_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
return cx18_prepare_buffer(q, s, buf, s->pixelformat,
s->vbwidth, s->vbheight, field);
}
static void buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_open_id *id = q->priv_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
cx18_dma_free(q, s, buf);
}
static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_open_id *id = q->priv_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &s->vb_capture);
}
static struct videobuf_queue_ops cx18_videobuf_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
static int cx18_serialized_open(struct cx18_stream *s, struct file *filp)
{
struct cx18 *cx = s->cx;
@ -942,8 +810,8 @@ static int cx18_serialized_open(struct cx18_stream *s, struct file *filp)
item->cx = cx;
item->type = s->type;
spin_lock_init(&item->s_lock);
item->vb_type = 0;
spin_lock_init(&s->vbuf_q_lock);
s->vb_type = 0;
item->open_id = cx->open_id++;
filp->private_data = &item->fh;
@ -979,15 +847,6 @@ static int cx18_serialized_open(struct cx18_stream *s, struct file *filp)
/* Done! Unmute and continue. */
cx18_unmute(cx);
}
if (item->type == CX18_ENC_STREAM_TYPE_YUV) {
item->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
videobuf_queue_vmalloc_init(&item->vbuf_q, &cx18_videobuf_qops,
&cx->pci_dev->dev, &item->s_lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx18_videobuf_buffer),
item, &cx->serialize_lock);
}
v4l2_fh_add(&item->fh);
return 0;
}

84
drivers/media/video/cx18/cx18-ioctl.c
View File

@ -41,18 +41,6 @@
#include <media/tveeprom.h>
#include <media/v4l2-chip-ident.h>
static struct v4l2_fmtdesc formats[] = {
{ 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
},
{ 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
"MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
},
{ 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"YUYV 4:2:2", V4L2_PIX_FMT_YUYV, { 0, 0, 0, 0 }
},
};
u16 cx18_service2vbi(int type)
{
switch (type) {
@ -172,8 +160,12 @@ static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
pixfmt->priv = 0;
if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
pixfmt->pixelformat = s->pixelformat;
/* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
if (s->pixelformat == V4L2_PIX_FMT_HM12)
pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
else
pixfmt->sizeimage = pixfmt->height * 720 * 2;
pixfmt->bytesperline = 720;
} else {
pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
@ -296,16 +288,15 @@ static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
w = fmt->fmt.pix.width;
h = fmt->fmt.pix.height;
s->pixelformat = fmt->fmt.pix.pixelformat;
s->vbheight = h;
s->vbwidth = w;
if (cx->cxhdl.width == w && cx->cxhdl.height == h)
if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
s->pixelformat == fmt->fmt.pix.pixelformat)
return 0;
if (atomic_read(&cx->ana_capturing) > 0)
return -EBUSY;
s->pixelformat = fmt->fmt.pix.pixelformat;
mbus_fmt.width = cx->cxhdl.width = w;
mbus_fmt.height = cx->cxhdl.height = h;
mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
@ -557,6 +548,18 @@ static int cx18_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_fmtdesc *fmt)
{
static const struct v4l2_fmtdesc formats[] = {
{ 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
},
{ 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
"MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
},
{ 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
},
};
if (fmt->index > ARRAY_SIZE(formats) - 1)
return -EINVAL;
*fmt = formats[fmt->index];
@ -874,10 +877,12 @@ static int cx18_g_enc_index(struct file *file, void *fh,
static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
{
struct videobuf_queue *q = NULL;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
switch (id->vb_type) {
switch (s->vb_type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
q = &id->vbuf_q;
q = &s->vbuf_q;
break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
break;
@ -895,15 +900,15 @@ static int cx18_streamon(struct file *file, void *priv,
struct cx18_stream *s = &cx->streams[id->type];
/* Start the hardware only if we're the video device */
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
if (id->type != CX18_ENC_STREAM_TYPE_YUV)
return -EINVAL;
/* Establish a buffer timeout */
mod_timer(&s->vb_timeout, jiffies + (HZ * 2));
mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
return videobuf_streamon(cx18_vb_queue(id));
}
@ -912,10 +917,12 @@ static int cx18_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
/* Start the hardware only if we're the video device */
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
if (id->type != CX18_ENC_STREAM_TYPE_YUV)
@ -928,9 +935,11 @@ static int cx18_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_reqbufs(cx18_vb_queue(id), rb);
@ -940,9 +949,11 @@ static int cx18_querybuf(struct file *file, void *priv,
struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_querybuf(cx18_vb_queue(id), b);
@ -951,9 +962,11 @@ static int cx18_querybuf(struct file *file, void *priv,
static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_qbuf(cx18_vb_queue(id), b);
@ -962,8 +975,11 @@ static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);

17
drivers/media/video/cx18/cx18-mailbox.c
View File

@ -177,7 +177,7 @@ static void cx18_mdl_send_to_videobuf(struct cx18_stream *s,
if (list_empty(&s->vb_capture))
goto out;
vb_buf = list_entry(s->vb_capture.next, struct cx18_videobuf_buffer,
vb_buf = list_first_entry(&s->vb_capture, struct cx18_videobuf_buffer,
vb.queue);
p = videobuf_to_vmalloc(&vb_buf->vb);
@ -202,25 +202,14 @@ static void cx18_mdl_send_to_videobuf(struct cx18_stream *s,
vb_buf->bytes_used = 0;
}
/* */
if (dispatch) {
if (s->pixelformat == V4L2_PIX_FMT_YUYV) {
/* UYVY to YUYV */
for (i = 0; i < (720 * 480 * 2); i += 2) {
u = *(p + i);
*(p + i) = *(p + i + 1);
*(p + i + 1) = u;
}
}
do_gettimeofday(&vb_buf->vb.ts);
ktime_get_ts(&vb_buf->vb.ts);
list_del(&vb_buf->vb.queue);
vb_buf->vb.state = VIDEOBUF_DONE;
wake_up(&vb_buf->vb.done);
}
mod_timer(&s->vb_timeout, jiffies + (HZ / 10));
mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
out:
spin_unlock(&s->vb_lock);

158
drivers/media/video/cx18/cx18-streams.c
View File

@ -98,6 +98,141 @@ static struct {
},
};
void cx18_dma_free(struct videobuf_queue *q,
struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
{
videobuf_waiton(q, &buf->vb, 0, 0);
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static int cx18_prepare_buffer(struct videobuf_queue *q,
struct cx18_stream *s,
struct cx18_videobuf_buffer *buf,
u32 pixelformat,
unsigned int width, unsigned int height,
enum v4l2_field field)
{
struct cx18 *cx = s->cx;
int rc = 0;
/* check settings */
buf->bytes_used = 0;
if ((width < 48) || (height < 32))
return -EINVAL;
buf->vb.size = (width * height * 2);
if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
return -EINVAL;
/* alloc + fill struct (if changed) */
if (buf->vb.width != width || buf->vb.height != height ||
buf->vb.field != field || s->pixelformat != pixelformat ||
buf->tvnorm != cx->std) {
buf->vb.width = width;
buf->vb.height = height;
buf->vb.field = field;
buf->tvnorm = cx->std;
s->pixelformat = pixelformat;
cx18_dma_free(q, s, buf);
}
if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
return -EINVAL;
if (buf->vb.field == 0)
buf->vb.field = V4L2_FIELD_INTERLACED;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
buf->vb.width = width;
buf->vb.height = height;
buf->vb.field = field;
buf->tvnorm = cx->std;
s->pixelformat = pixelformat;
rc = videobuf_iolock(q, &buf->vb, NULL);
if (rc != 0)
goto fail;
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx18_dma_free(q, s, buf);
return rc;
}
/* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576)
1440 is a single line of 4:2:2 YUV at 720 luma samples wide
*/
#define VB_MIN_BUFFERS 32
#define VB_MIN_BUFSIZE 4147200
static int buffer_setup(struct videobuf_queue *q,
unsigned int *count, unsigned int *size)
{
struct cx18_stream *s = q->priv_data;
struct cx18 *cx = s->cx;
*size = 2 * cx->cxhdl.width * cx->cxhdl.height;
if (*count == 0)
*count = VB_MIN_BUFFERS;
while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
(*count)--;
q->field = V4L2_FIELD_INTERLACED;
q->last = V4L2_FIELD_INTERLACED;
return 0;
}
static int buffer_prepare(struct videobuf_queue *q,
struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_stream *s = q->priv_data;
struct cx18 *cx = s->cx;
return cx18_prepare_buffer(q, s, buf, s->pixelformat,
cx->cxhdl.width, cx->cxhdl.height, field);
}
static void buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_stream *s = q->priv_data;
cx18_dma_free(q, s, buf);
}
static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx18_videobuf_buffer *buf =
container_of(vb, struct cx18_videobuf_buffer, vb);
struct cx18_stream *s = q->priv_data;
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &s->vb_capture);
}
static struct videobuf_queue_ops cx18_videobuf_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
static void cx18_stream_init(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
@ -139,9 +274,18 @@ static void cx18_stream_init(struct cx18 *cx, int type)
s->vb_timeout.data = (unsigned long)s;
init_timer(&s->vb_timeout);
spin_lock_init(&s->vb_lock);
if (type == CX18_ENC_STREAM_TYPE_YUV) {
s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops,
&cx->pci_dev->dev, &s->vbuf_q_lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx18_videobuf_buffer),
s, &cx->serialize_lock);
/* Assume the previous pixel default */
s->pixelformat = V4L2_PIX_FMT_HM12;
/* Assume the previous pixel default */
s->pixelformat = V4L2_PIX_FMT_HM12;
}
}
static int cx18_prep_dev(struct cx18 *cx, int type)
@ -382,6 +526,9 @@ void cx18_streams_cleanup(struct cx18 *cx, int unregister)
if (vdev == NULL)
continue;
if (type == CX18_ENC_STREAM_TYPE_YUV)
videobuf_mmap_free(&cx->streams[type].vbuf_q);
cx18_stream_free(&cx->streams[type]);
/* Unregister or release device */
@ -591,7 +738,10 @@ static void cx18_stream_configure_mdls(struct cx18_stream *s)
* Set the MDL size to the exact size needed for one frame.
* Use enough buffers per MDL to cover the MDL size
*/
s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
if (s->pixelformat == V4L2_PIX_FMT_HM12)
s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
else
s->mdl_size = 720 * s->cx->cxhdl.height * 2;
s->bufs_per_mdl = s->mdl_size / s->buf_size;
if (s->mdl_size % s->buf_size)
s->bufs_per_mdl++;
@ -744,7 +894,7 @@ int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
* rather than the default HM12 Macroblovk 4:2:0 support.
*/
if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
if (s->pixelformat == V4L2_PIX_FMT_YUYV)
if (s->pixelformat == V4L2_PIX_FMT_UYVY)
cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
s->handle, 1);
else