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
select VIDEO_TVEEPROM
#include "dvb_net.h"
#include "dvbdev.h"
+/* Videobuf / YUV support */
+#include <media/videobuf-core.h>
+#include <media/videobuf-vmalloc.h>
+
#ifndef CONFIG_PCI
# error "This driver requires kernel PCI support."
#endif
struct cx18_queue q_idle; /* idle - not in rotation */
struct work_struct out_work_order;
+
+ /* Videobuf for YUV video */
+ 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 cx18_videobuf_buffer {
+ /* Common video buffer sub-system struct */
+ struct videobuf_buffer vb;
+ v4l2_std_id tvnorm; /* selected tv norm */
+ u32 bytes_used;
};
struct cx18_open_id {
u32 open_id;
int type;
struct cx18 *cx;
+
+ struct videobuf_queue vbuf_q;
+ spinlock_t s_lock; /* Protect vbuf_q */
+ enum v4l2_buf_type vb_type;
};
static inline struct cx18_open_id *fh2id(struct v4l2_fh *fh)
mutex_unlock(&cx->serialize_lock);
if (rc)
return rc;
+
+ if ((id->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,
+ filp->f_flags & O_NONBLOCK);
+ }
+
return cx18_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK);
}
CX18_DEBUG_FILE("Encoder poll started capture\n");
}
+ if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
+ (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
+ return videobuf_poll_stream(filp, &id->vbuf_q, wait);
+ }
+
/* add stream's waitq to the poll list */
CX18_DEBUG_HI_FILE("Encoder poll\n");
poll_wait(filp, &s->waitq, wait);
return 0;
}
+int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct cx18_open_id *id = file->private_data;
+ struct cx18 *cx = id->cx;
+ 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) &&
+ (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
+
+ /* Start a capture if there is none */
+ if (!eof && !test_bit(CX18_F_S_STREAMING, &s->s_flags)) {
+ int rc;
+
+ mutex_lock(&cx->serialize_lock);
+ rc = cx18_start_capture(id);
+ mutex_unlock(&cx->serialize_lock);
+ if (rc) {
+ CX18_DEBUG_INFO(
+ "Could not start capture for %s (%d)\n",
+ s->name, rc);
+ return -EINVAL;
+ }
+ CX18_DEBUG_FILE("Encoder poll started capture\n");
+ }
+
+ return videobuf_mmap_mapper(&id->vbuf_q, vma);
+ }
+
+ return -EINVAL;
+}
+
+void cx18_vb_timeout(unsigned long data)
+{
+ struct cx18_stream *s = (struct cx18_stream *)data;
+ struct cx18_videobuf_buffer *buf;
+ unsigned long flags;
+
+ /* Return all of the buffers in error state, so the vbi/vid inode
+ * can return from blocking.
+ */
+ spin_lock_irqsave(&s->vb_lock, flags);
+ while (!list_empty(&s->vb_capture)) {
+ buf = list_entry(s->vb_capture.next,
+ struct cx18_videobuf_buffer, vb.queue);
+ list_del(&buf->vb.queue);
+ buf->vb.state = VIDEOBUF_ERROR;
+ wake_up(&buf->vb.done);
+ }
+ spin_unlock_irqrestore(&s->vb_lock, flags);
+}
+
void cx18_stop_capture(struct cx18_open_id *id, int gop_end)
{
struct cx18 *cx = id->cx;
cx18_release_stream(s);
} else {
cx18_stop_capture(id, 0);
+ if (id->type == CX18_ENC_STREAM_TYPE_YUV)
+ videobuf_mmap_free(&id->vbuf_q);
}
kfree(id);
mutex_unlock(&cx->serialize_lock);
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;
item->cx = cx;
item->type = s->type;
+ spin_lock_init(&item->s_lock);
+ item->vb_type = 0;
+
item->open_id = cx->open_id++;
filp->private_data = &item->fh;
/* 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;
}
void cx18_stop_capture(struct cx18_open_id *id, int gop_end);
void cx18_mute(struct cx18 *cx);
void cx18_unmute(struct cx18 *cx);
+int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma);
+void cx18_vb_timeout(unsigned long data);
/* Shared with cx18-alsa module */
int cx18_claim_stream(struct cx18_open_id *id, int type);
#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) {
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
+ struct cx18_stream *s = &cx->streams[id->type];
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
pixfmt->width = cx->cxhdl.width;
pixfmt->field = V4L2_FIELD_INTERLACED;
pixfmt->priv = 0;
if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
- pixfmt->pixelformat = V4L2_PIX_FMT_HM12;
+ pixfmt->pixelformat = s->pixelformat;
/* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
pixfmt->bytesperline = 720;
h = min(h, cx->is_50hz ? 576 : 480);
h = max(h, min_h);
- cx18_g_fmt_vid_cap(file, fh, fmt);
fmt->fmt.pix.width = w;
fmt->fmt.pix.height = h;
return 0;
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
struct v4l2_mbus_framefmt mbus_fmt;
+ struct cx18_stream *s = &cx->streams[id->type];
int ret;
int w, h;
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)
return 0;
static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_fmtdesc *fmt)
{
- 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 }
- }
- };
-
- if (fmt->index > 1)
+ if (fmt->index > ARRAY_SIZE(formats) - 1)
return -EINVAL;
*fmt = formats[fmt->index];
return 0;
return 0;
}
+static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
+{
+ struct videobuf_queue *q = NULL;
+
+ switch (id->vb_type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ q = &id->vbuf_q;
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ break;
+ default:
+ break;
+ }
+ return q;
+}
+
+static int cx18_streamon(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))
+ return -EINVAL;
+
+ if (id->type != CX18_ENC_STREAM_TYPE_YUV)
+ return -EINVAL;
+
+ /* Establish a buffer timeout */
+ mod_timer(&s->vb_timeout, jiffies + (HZ * 2));
+
+ return videobuf_streamon(cx18_vb_queue(id));
+}
+
+static int cx18_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct cx18_open_id *id = file->private_data;
+
+ /* 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))
+ return -EINVAL;
+
+ if (id->type != CX18_ENC_STREAM_TYPE_YUV)
+ return -EINVAL;
+
+ return videobuf_streamoff(cx18_vb_queue(id));
+}
+
+static int cx18_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ 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))
+ return -EINVAL;
+
+ return videobuf_reqbufs(cx18_vb_queue(id), rb);
+}
+
+static int cx18_querybuf(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))
+ return -EINVAL;
+
+ return videobuf_querybuf(cx18_vb_queue(id), b);
+}
+
+static int cx18_qbuf(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))
+ return -EINVAL;
+
+ return videobuf_qbuf(cx18_vb_queue(id), 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))
+ return -EINVAL;
+
+ return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
+}
+
static int cx18_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *enc)
{
.vidioc_s_register = cx18_s_register,
#endif
.vidioc_default = cx18_default,
+ .vidioc_streamon = cx18_streamon,
+ .vidioc_streamoff = cx18_streamoff,
+ .vidioc_reqbufs = cx18_reqbufs,
+ .vidioc_querybuf = cx18_querybuf,
+ .vidioc_qbuf = cx18_qbuf,
+ .vidioc_dqbuf = cx18_dqbuf,
};
void cx18_set_funcs(struct video_device *vdev)
API_ENTRY(CPU, CX18_CPU_SET_SLICED_VBI_PARAM, 0),
API_ENTRY(CPU, CX18_CPU_SET_USERDATA_PLACE_HOLDER, 0),
API_ENTRY(CPU, CX18_CPU_GET_ENC_PTS, 0),
+ API_ENTRY(CPU, CX18_CPU_SET_VFC_PARAM, 0),
API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK, 0),
API_ENTRY(CPU, CX18_CPU_DE_SET_MDL, API_FAST),
API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL, API_SLOW),
}
}
+static void cx18_mdl_send_to_videobuf(struct cx18_stream *s,
+ struct cx18_mdl *mdl)
+{
+ struct cx18_videobuf_buffer *vb_buf;
+ struct cx18_buffer *buf;
+ u8 *p, u;
+ u32 offset = 0;
+ int dispatch = 0;
+ int i;
+
+ if (mdl->bytesused == 0)
+ return;
+
+ /* Acquire a videobuf buffer, clone to and and release it */
+ spin_lock(&s->vb_lock);
+ if (list_empty(&s->vb_capture))
+ goto out;
+
+ vb_buf = list_entry(s->vb_capture.next, struct cx18_videobuf_buffer,
+ vb.queue);
+
+ p = videobuf_to_vmalloc(&vb_buf->vb);
+ if (!p)
+ goto out;
+
+ offset = vb_buf->bytes_used;
+ list_for_each_entry(buf, &mdl->buf_list, list) {
+ if (buf->bytesused == 0)
+ break;
+
+ if ((offset + buf->bytesused) <= vb_buf->vb.bsize) {
+ memcpy(p + offset, buf->buf, buf->bytesused);
+ offset += buf->bytesused;
+ vb_buf->bytes_used += buf->bytesused;
+ }
+ }
+
+ /* If we've filled the buffer as per the callers res then dispatch it */
+ if (vb_buf->bytes_used >= (vb_buf->vb.width * vb_buf->vb.height * 2)) {
+ dispatch = 1;
+ 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);
+ 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));
+
+out:
+ spin_unlock(&s->vb_lock);
+}
static void cx18_mdl_send_to_alsa(struct cx18 *cx, struct cx18_stream *s,
struct cx18_mdl *mdl)
} else {
cx18_enqueue(s, mdl, &s->q_full);
}
+ } else if (s->type == CX18_ENC_STREAM_TYPE_YUV) {
+ cx18_mdl_send_to_videobuf(s, mdl);
+ cx18_enqueue(s, mdl, &s->q_free);
} else {
cx18_enqueue(s, mdl, &s->q_full);
if (s->type == CX18_ENC_STREAM_TYPE_IDX)
.unlocked_ioctl = cx18_v4l2_ioctl,
.release = cx18_v4l2_close,
.poll = cx18_v4l2_enc_poll,
+ .mmap = cx18_v4l2_mmap,
};
/* offset from 0 to register ts v4l2 minors on */
cx18_queue_init(&s->q_idle);
INIT_WORK(&s->out_work_order, cx18_out_work_handler);
+
+ INIT_LIST_HEAD(&s->vb_capture);
+ s->vb_timeout.function = cx18_vb_timeout;
+ 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;
}
static int cx18_prep_dev(struct cx18 *cx, int type)
test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
(v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);
+
+ /* Enable the Video Format Converter for UYVY 4:2:2 support,
+ * rather than the default HM12 Macroblovk 4:2:0 support.
+ */
+ if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
+ if (s->pixelformat == V4L2_PIX_FMT_YUYV)
+ cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
+ s->handle, 1);
+ else
+ /* If in doubt, default to HM12 */
+ cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
+ s->handle, 0);
+ }
}
if (atomic_read(&cx->tot_capturing) == 0) {
ReturnCode */
#define CX18_CPU_GET_ENC_PTS (CPU_CMD_MASK_CAPTURE | 0x0022)
+/* Description: Set VFC parameters
+ IN[0] - task handle
+ IN[1] - VFC enable flag, 1 - enable, 0 - disable
+*/
+#define CX18_CPU_SET_VFC_PARAM (CPU_CMD_MASK_CAPTURE | 0x0023)
+
/* Below is the list of commands related to the data exchange */
#define CPU_CMD_MASK_DE (CPU_CMD_MASK | 0x040000)
projects / deliverable / linux.git / commitdiff
