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authorSimon Farnsworth <simon.farnsworth@onelan.co.uk>2011-05-03 11:57:40 (GMT)
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-05-05 11:10:11 (GMT)
commit4e6d4ae82f2fd22a8c4918dad3cc118485f27663 (patch)
tree6d8f0932fab4c44d5573f15b79f5ec115b9a367d
parent9f3fbd9cba13f9b8213239e82b040ab2fb987ee4 (diff)
[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>
-rw-r--r--drivers/media/video/cx18/Kconfig1
-rw-r--r--drivers/media/video/cx18/cx18-driver.h8
-rw-r--r--drivers/media/video/cx18/cx18-fileops.c167
-rw-r--r--drivers/media/video/cx18/cx18-ioctl.c84
-rw-r--r--drivers/media/video/cx18/cx18-mailbox.c17
-rw-r--r--drivers/media/video/cx18/cx18-streams.c160
6 files changed, 225 insertions, 212 deletions
diff --git a/drivers/media/video/cx18/Kconfig b/drivers/media/video/cx18/Kconfig
index 9c23202..53b3c77 100644
--- a/drivers/media/video/cx18/Kconfig
+++ b/drivers/media/video/cx18/Kconfig
@@ -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
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index 70e1e04..0864272 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -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 {
diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c
index c74eafd..6609222 100644
--- a/drivers/media/video/cx18/cx18-fileops.c
+++ b/drivers/media/video/cx18/cx18-fileops.c
@@ -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;
}
diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c
index 777d726..1933d4d 100644
--- a/drivers/media/video/cx18/cx18-ioctl.c
+++ b/drivers/media/video/cx18/cx18-ioctl.c
@@ -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);
diff --git a/drivers/media/video/cx18/cx18-mailbox.c b/drivers/media/video/cx18/cx18-mailbox.c
index d4d8873..5ecae93 100644
--- a/drivers/media/video/cx18/cx18-mailbox.c
+++ b/drivers/media/video/cx18/cx18-mailbox.c
@@ -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);
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index eeb455a..3995af7 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -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);
-
- /* Assume the previous pixel default */
- s->pixelformat = V4L2_PIX_FMT_HM12;
+ 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;
+ }
}
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

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