- 根目录:
- drivers
- media
- usb
- hdpvr
- hdpvr-video.c
#include <linux/kernel.h>
#include <linux/kconfig.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dv-timings.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include "hdpvr.h"
#define BULK_URB_TIMEOUT 90
#define print_buffer_status() { \
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
"%s:%d buffer stat: %d free, %d proc\n", \
__func__, __LINE__, \
list_size(&dev->free_buff_list), \
list_size(&dev->rec_buff_list)); }
static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
V4L2_DV_BT_CEA_720X480I59_94,
V4L2_DV_BT_CEA_720X576I50,
V4L2_DV_BT_CEA_720X480P59_94,
V4L2_DV_BT_CEA_720X576P50,
V4L2_DV_BT_CEA_1280X720P50,
V4L2_DV_BT_CEA_1280X720P60,
V4L2_DV_BT_CEA_1920X1080I50,
V4L2_DV_BT_CEA_1920X1080I60,
};
#define HDPVR_DEF_DV_TIMINGS_IDX (0)
struct hdpvr_fh {
struct v4l2_fh fh;
bool legacy_mode;
};
static uint list_size(struct list_head *list)
{
struct list_head *tmp;
uint count = 0;
list_for_each(tmp, list) {
count++;
}
return count;
}
static void hdpvr_read_bulk_callback(struct urb *urb)
{
struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
struct hdpvr_device *dev = buf->dev;
buf->status = BUFSTAT_READY;
wake_up_interruptible(&dev->wait_data);
}
int hdpvr_cancel_queue(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
usb_kill_urb(buf->urb);
buf->status = BUFSTAT_AVAILABLE;
}
list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
return 0;
}
static int hdpvr_free_queue(struct list_head *q)
{
struct list_head *tmp;
struct list_head *p;
struct hdpvr_buffer *buf;
struct urb *urb;
for (p = q->next; p != q;) {
buf = list_entry(p, struct hdpvr_buffer, buff_list);
urb = buf->urb;
usb_free_coherent(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
usb_free_urb(urb);
tmp = p->next;
list_del(p);
kfree(buf);
p = tmp;
}
return 0;
}
int hdpvr_free_buffers(struct hdpvr_device *dev)
{
hdpvr_cancel_queue(dev);
hdpvr_free_queue(&dev->free_buff_list);
hdpvr_free_queue(&dev->rec_buff_list);
return 0;
}
int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
{
uint i;
int retval = -ENOMEM;
u8 *mem;
struct hdpvr_buffer *buf;
struct urb *urb;
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"allocating %u buffers\n", count);
for (i = 0; i < count; i++) {
buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
if (!buf) {
v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
goto exit;
}
buf->dev = dev;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
goto exit_urb;
}
buf->urb = urb;
mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
&urb->transfer_dma);
if (!mem) {
v4l2_err(&dev->v4l2_dev,
"cannot allocate usb transfer buffer\n");
goto exit_urb_buffer;
}
usb_fill_bulk_urb(buf->urb, dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in_endpointAddr),
mem, dev->bulk_in_size,
hdpvr_read_bulk_callback, buf);
buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
buf->status = BUFSTAT_AVAILABLE;
list_add_tail(&buf->buff_list, &dev->free_buff_list);
}
return 0;
exit_urb_buffer:
usb_free_urb(urb);
exit_urb:
kfree(buf);
exit:
hdpvr_free_buffers(dev);
return retval;
}
static int hdpvr_submit_buffers(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
struct urb *urb;
int ret = 0, err_count = 0;
mutex_lock(&dev->io_mutex);
while (dev->status == STATUS_STREAMING &&
!list_empty(&dev->free_buff_list)) {
buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
buff_list);
if (buf->status != BUFSTAT_AVAILABLE) {
v4l2_err(&dev->v4l2_dev,
"buffer not marked as available\n");
ret = -EFAULT;
goto err;
}
urb = buf->urb;
urb->status = 0;
urb->actual_length = 0;
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret) {
v4l2_err(&dev->v4l2_dev,
"usb_submit_urb in %s returned %d\n",
__func__, ret);
if (++err_count > 2)
break;
continue;
}
buf->status = BUFSTAT_INPROGRESS;
list_move_tail(&buf->buff_list, &dev->rec_buff_list);
}
err:
print_buffer_status();
mutex_unlock(&dev->io_mutex);
return ret;
}
static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
mutex_lock(&dev->io_mutex);
if (list_empty(&dev->rec_buff_list)) {
mutex_unlock(&dev->io_mutex);
return NULL;
}
buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
buff_list);
mutex_unlock(&dev->io_mutex);
return buf;
}
static void hdpvr_transmit_buffers(struct work_struct *work)
{
struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
worker);
while (dev->status == STATUS_STREAMING) {
if (hdpvr_submit_buffers(dev)) {
v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
goto error;
}
if (wait_event_interruptible(dev->wait_buffer,
!list_empty(&dev->free_buff_list) ||
dev->status != STATUS_STREAMING))
goto error;
}
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"transmit worker exited\n");
return;
error:
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"transmit buffers errored\n");
dev->status = STATUS_ERROR;
}
static int hdpvr_start_streaming(struct hdpvr_device *dev)
{
int ret;
struct hdpvr_video_info vidinf;
if (dev->status == STATUS_STREAMING)
return 0;
if (dev->status != STATUS_IDLE)
return -EAGAIN;
ret = get_video_info(dev, &vidinf);
if (ret < 0)
return ret;
if (!vidinf.valid) {
msleep(250);
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"no video signal at input %d\n", dev->options.video_input);
return -EAGAIN;
}
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"video signal: %dx%d@%dhz\n", vidinf.width,
vidinf.height, vidinf.fps);
ret = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"encoder start control request returned %d\n", ret);
if (ret < 0)
return ret;
ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
if (ret)
return ret;
dev->status = STATUS_STREAMING;
INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
queue_work(dev->workqueue, &dev->worker);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"streaming started\n");
return 0;
}
static int hdpvr_stop_streaming(struct hdpvr_device *dev)
{
int actual_length;
uint c = 0;
u8 *buf;
if (dev->status == STATUS_IDLE)
return 0;
else if (dev->status != STATUS_STREAMING)
return -EAGAIN;
buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
if (!buf)
v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
"for emptying the internal device buffer. "
"Next capture start will be slow\n");
dev->status = STATUS_SHUTTING_DOWN;
hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
mutex_unlock(&dev->io_mutex);
wake_up_interruptible(&dev->wait_buffer);
msleep(50);
flush_workqueue(dev->workqueue);
mutex_lock(&dev->io_mutex);
hdpvr_cancel_queue(dev);
while (buf && ++c < 500 &&
!usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in_endpointAddr),
buf, dev->bulk_in_size, &actual_length,
BULK_URB_TIMEOUT)) {
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"%2d: got %d bytes\n", c, actual_length);
}
kfree(buf);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"used %d urbs to empty device buffers\n", c-1);
msleep(10);
dev->status = STATUS_IDLE;
return 0;
}
static int hdpvr_open(struct file *file)
{
struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (fh == NULL)
return -ENOMEM;
fh->legacy_mode = true;
v4l2_fh_init(&fh->fh, video_devdata(file));
v4l2_fh_add(&fh->fh);
file->private_data = fh;
return 0;
}
static int hdpvr_release(struct file *file)
{
struct hdpvr_device *dev = video_drvdata(file);
mutex_lock(&dev->io_mutex);
if (file->private_data == dev->owner) {
hdpvr_stop_streaming(dev);
dev->owner = NULL;
}
mutex_unlock(&dev->io_mutex);
return v4l2_fh_release(file);
}
static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
loff_t *pos)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_buffer *buf = NULL;
struct urb *urb;
unsigned int ret = 0;
int rem, cnt;
if (*pos)
return -ESPIPE;
mutex_lock(&dev->io_mutex);
if (dev->status == STATUS_IDLE) {
if (hdpvr_start_streaming(dev)) {
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"start_streaming failed\n");
ret = -EIO;
msleep(200);
dev->status = STATUS_IDLE;
mutex_unlock(&dev->io_mutex);
goto err;
}
dev->owner = file->private_data;
print_buffer_status();
}
mutex_unlock(&dev->io_mutex);
if (!(file->f_flags & O_NONBLOCK)) {
if (wait_event_interruptible(dev->wait_data,
hdpvr_get_next_buffer(dev)))
return -ERESTARTSYS;
}
buf = hdpvr_get_next_buffer(dev);
while (count > 0 && buf) {
if (buf->status != BUFSTAT_READY &&
dev->status != STATUS_DISCONNECTED) {
if (file->f_flags & O_NONBLOCK) {
if (!ret)
ret = -EAGAIN;
goto err;
}
if (wait_event_interruptible(dev->wait_data,
buf->status == BUFSTAT_READY)) {
ret = -ERESTARTSYS;
goto err;
}
}
if (buf->status != BUFSTAT_READY)
break;
urb = buf->urb;
rem = urb->actual_length - buf->pos;
cnt = rem > count ? count : rem;
if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
cnt)) {
v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
if (!ret)
ret = -EFAULT;
goto err;
}
buf->pos += cnt;
count -= cnt;
buffer += cnt;
ret += cnt;
if (buf->pos == urb->actual_length) {
mutex_lock(&dev->io_mutex);
buf->pos = 0;
buf->status = BUFSTAT_AVAILABLE;
list_move_tail(&buf->buff_list, &dev->free_buff_list);
print_buffer_status();
mutex_unlock(&dev->io_mutex);
wake_up_interruptible(&dev->wait_buffer);
buf = hdpvr_get_next_buffer(dev);
}
}
err:
if (!ret && !buf)
ret = -EAGAIN;
return ret;
}
static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
{
unsigned long req_events = poll_requested_events(wait);
struct hdpvr_buffer *buf = NULL;
struct hdpvr_device *dev = video_drvdata(filp);
unsigned int mask = v4l2_ctrl_poll(filp, wait);
if (!(req_events & (POLLIN | POLLRDNORM)))
return mask;
mutex_lock(&dev->io_mutex);
if (dev->status == STATUS_IDLE) {
if (hdpvr_start_streaming(dev)) {
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"start_streaming failed\n");
dev->status = STATUS_IDLE;
} else {
dev->owner = filp->private_data;
}
print_buffer_status();
}
mutex_unlock(&dev->io_mutex);
buf = hdpvr_get_next_buffer(dev);
if (!buf || buf->status != BUFSTAT_READY) {
poll_wait(filp, &dev->wait_data, wait);
buf = hdpvr_get_next_buffer(dev);
}
if (buf && buf->status == BUFSTAT_READY)
mask |= POLLIN | POLLRDNORM;
return mask;
}
static const struct v4l2_file_operations hdpvr_fops = {
.owner = THIS_MODULE,
.open = hdpvr_open,
.release = hdpvr_release,
.read = hdpvr_read,
.poll = hdpvr_poll,
.unlocked_ioctl = video_ioctl2,
};
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct hdpvr_device *dev = video_drvdata(file);
strcpy(cap->driver, "hdpvr");
strcpy(cap->card, "Hauppauge HD PVR");
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
static int vidioc_s_std(struct file *file, void *_fh,
v4l2_std_id std)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
u8 std_type = 1;
if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
return -ENODATA;
if (dev->status != STATUS_IDLE)
return -EBUSY;
if (std & V4L2_STD_525_60)
std_type = 0;
dev->cur_std = std;
dev->width = 720;
dev->height = std_type ? 576 : 480;
return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
}
static int vidioc_g_std(struct file *file, void *_fh,
v4l2_std_id *std)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
return -ENODATA;
*std = dev->cur_std;
return 0;
}
static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_video_info vid_info;
struct hdpvr_fh *fh = _fh;
int ret;
*a = V4L2_STD_UNKNOWN;
if (dev->options.video_input == HDPVR_COMPONENT)
return fh->legacy_mode ? 0 : -ENODATA;
ret = get_video_info(dev, &vid_info);
if (vid_info.valid && vid_info.width == 720 &&
(vid_info.height == 480 || vid_info.height == 576)) {
*a = (vid_info.height == 480) ?
V4L2_STD_525_60 : V4L2_STD_625_50;
}
return ret;
}
static int vidioc_s_dv_timings(struct file *file, void *_fh,
struct v4l2_dv_timings *timings)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
int i;
fh->legacy_mode = false;
if (dev->options.video_input)
return -ENODATA;
if (dev->status != STATUS_IDLE)
return -EBUSY;
for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0))
break;
if (i == ARRAY_SIZE(hdpvr_dv_timings))
return -EINVAL;
dev->cur_dv_timings = hdpvr_dv_timings[i];
dev->width = hdpvr_dv_timings[i].bt.width;
dev->height = hdpvr_dv_timings[i].bt.height;
return 0;
}
static int vidioc_g_dv_timings(struct file *file, void *_fh,
struct v4l2_dv_timings *timings)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
fh->legacy_mode = false;
if (dev->options.video_input)
return -ENODATA;
*timings = dev->cur_dv_timings;
return 0;
}
static int vidioc_query_dv_timings(struct file *file, void *_fh,
struct v4l2_dv_timings *timings)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
struct hdpvr_video_info vid_info;
bool interlaced;
int ret = 0;
int i;
fh->legacy_mode = false;
if (dev->options.video_input)
return -ENODATA;
ret = get_video_info(dev, &vid_info);
if (ret)
return ret;
if (!vid_info.valid)
return -ENOLCK;
interlaced = vid_info.fps <= 30;
for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
unsigned hsize;
unsigned vsize;
unsigned fps;
hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
fps = (unsigned)bt->pixelclock / (hsize * vsize);
if (bt->width != vid_info.width ||
bt->height != vid_info.height ||
bt->interlaced != interlaced ||
(fps != vid_info.fps && fps + 1 != vid_info.fps))
continue;
*timings = hdpvr_dv_timings[i];
break;
}
if (i == ARRAY_SIZE(hdpvr_dv_timings))
ret = -ERANGE;
return ret;
}
static int vidioc_enum_dv_timings(struct file *file, void *_fh,
struct v4l2_enum_dv_timings *timings)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
fh->legacy_mode = false;
memset(timings->reserved, 0, sizeof(timings->reserved));
if (dev->options.video_input)
return -ENODATA;
if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
return -EINVAL;
timings->timings = hdpvr_dv_timings[timings->index];
return 0;
}
static int vidioc_dv_timings_cap(struct file *file, void *_fh,
struct v4l2_dv_timings_cap *cap)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
fh->legacy_mode = false;
if (dev->options.video_input)
return -ENODATA;
cap->type = V4L2_DV_BT_656_1120;
cap->bt.min_width = 720;
cap->bt.max_width = 1920;
cap->bt.min_height = 480;
cap->bt.max_height = 1080;
cap->bt.min_pixelclock = 27000000;
cap->bt.max_pixelclock = 74250000;
cap->bt.standards = V4L2_DV_BT_STD_CEA861;
cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
return 0;
}
static const char *iname[] = {
[HDPVR_COMPONENT] = "Component",
[HDPVR_SVIDEO] = "S-Video",
[HDPVR_COMPOSITE] = "Composite",
};
static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
{
unsigned int n;
n = i->index;
if (n >= HDPVR_VIDEO_INPUTS)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
strncpy(i->name, iname[n], sizeof(i->name) - 1);
i->name[sizeof(i->name) - 1] = '\0';
i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
i->std = n ? V4L2_STD_ALL : 0;
return 0;
}
static int vidioc_s_input(struct file *file, void *_fh,
unsigned int index)
{
struct hdpvr_device *dev = video_drvdata(file);
int retval;
if (index >= HDPVR_VIDEO_INPUTS)
return -EINVAL;
if (dev->status != STATUS_IDLE)
return -EBUSY;
retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
if (!retval) {
dev->options.video_input = index;
}
return retval;
}
static int vidioc_g_input(struct file *file, void *private_data,
unsigned int *index)
{
struct hdpvr_device *dev = video_drvdata(file);
*index = dev->options.video_input;
return 0;
}
static const char *audio_iname[] = {
[HDPVR_RCA_FRONT] = "RCA front",
[HDPVR_RCA_BACK] = "RCA back",
[HDPVR_SPDIF] = "SPDIF",
};
static int vidioc_enumaudio(struct file *file, void *priv,
struct v4l2_audio *audio)
{
unsigned int n;
n = audio->index;
if (n >= HDPVR_AUDIO_INPUTS)
return -EINVAL;
audio->capability = V4L2_AUDCAP_STEREO;
strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
audio->name[sizeof(audio->name) - 1] = '\0';
return 0;
}
static int vidioc_s_audio(struct file *file, void *private_data,
const struct v4l2_audio *audio)
{
struct hdpvr_device *dev = video_drvdata(file);
int retval;
if (audio->index >= HDPVR_AUDIO_INPUTS)
return -EINVAL;
if (dev->status != STATUS_IDLE)
return -EBUSY;
retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
if (!retval)
dev->options.audio_input = audio->index;
return retval;
}
static int vidioc_g_audio(struct file *file, void *private_data,
struct v4l2_audio *audio)
{
struct hdpvr_device *dev = video_drvdata(file);
audio->index = dev->options.audio_input;
audio->capability = V4L2_AUDCAP_STEREO;
strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
audio->name[sizeof(audio->name) - 1] = '\0';
return 0;
}
static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct hdpvr_device *dev =
container_of(ctrl->handler, struct hdpvr_device, hdl);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
dev->video_bitrate->val >= dev->video_bitrate_peak->val)
dev->video_bitrate_peak->val =
dev->video_bitrate->val + 100000;
break;
}
return 0;
}
static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct hdpvr_device *dev =
container_of(ctrl->handler, struct hdpvr_device, hdl);
struct hdpvr_options *opt = &dev->options;
int ret = -EINVAL;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
if (ret)
break;
dev->options.brightness = ctrl->val;
return 0;
case V4L2_CID_CONTRAST:
ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
if (ret)
break;
dev->options.contrast = ctrl->val;
return 0;
case V4L2_CID_SATURATION:
ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
if (ret)
break;
dev->options.saturation = ctrl->val;
return 0;
case V4L2_CID_HUE:
ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
if (ret)
break;
dev->options.hue = ctrl->val;
return 0;
case V4L2_CID_SHARPNESS:
ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
if (ret)
break;
dev->options.sharpness = ctrl->val;
return 0;
case V4L2_CID_MPEG_AUDIO_ENCODING:
if (dev->flags & HDPVR_FLAG_AC3_CAP) {
opt->audio_codec = ctrl->val;
return hdpvr_set_audio(dev, opt->audio_input + 1,
opt->audio_codec);
}
return 0;
case V4L2_CID_MPEG_VIDEO_ENCODING:
return 0;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
uint bitrate = dev->video_bitrate->val / 100000;
if (ctrl->is_new) {
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
opt->bitrate_mode = HDPVR_CONSTANT;
else
opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
opt->bitrate_mode);
v4l2_ctrl_activate(dev->video_bitrate_peak,
ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
}
if (dev->video_bitrate_peak->is_new ||
dev->video_bitrate->is_new) {
opt->bitrate = bitrate;
opt->peak_bitrate = peak_bitrate;
hdpvr_set_bitrate(dev);
}
return 0;
}
case V4L2_CID_MPEG_STREAM_TYPE:
return 0;
default:
break;
}
return ret;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
struct v4l2_fmtdesc *f)
{
if (f->index != 0)
return -EINVAL;
f->flags = V4L2_FMT_FLAG_COMPRESSED;
strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
f->pixelformat = V4L2_PIX_FMT_MPEG;
return 0;
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
struct v4l2_format *f)
{
struct hdpvr_device *dev = video_drvdata(file);
struct hdpvr_fh *fh = _fh;
int ret;
if (fh->legacy_mode) {
struct hdpvr_video_info vid_info;
ret = get_video_info(dev, &vid_info);
if (ret < 0)
return ret;
if (!vid_info.valid)
return -EFAULT;
f->fmt.pix.width = vid_info.width;
f->fmt.pix.height = vid_info.height;
} else {
f->fmt.pix.width = dev->width;
f->fmt.pix.height = dev->height;
}
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
f->fmt.pix.sizeimage = dev->bulk_in_size;
f->fmt.pix.bytesperline = 0;
if (f->fmt.pix.width == 720) {
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
} else {
f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
f->fmt.pix.field = V4L2_FIELD_NONE;
}
return 0;
}
static int vidioc_encoder_cmd(struct file *filp, void *priv,
struct v4l2_encoder_cmd *a)
{
struct hdpvr_device *dev = video_drvdata(filp);
int res = 0;
mutex_lock(&dev->io_mutex);
a->flags = 0;
switch (a->cmd) {
case V4L2_ENC_CMD_START:
if (dev->owner && filp->private_data != dev->owner) {
res = -EBUSY;
break;
}
if (dev->status == STATUS_STREAMING)
break;
res = hdpvr_start_streaming(dev);
if (!res)
dev->owner = filp->private_data;
else
dev->status = STATUS_IDLE;
break;
case V4L2_ENC_CMD_STOP:
if (dev->owner && filp->private_data != dev->owner) {
res = -EBUSY;
break;
}
if (dev->status == STATUS_IDLE)
break;
res = hdpvr_stop_streaming(dev);
if (!res)
dev->owner = NULL;
break;
default:
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"Unsupported encoder cmd %d\n", a->cmd);
res = -EINVAL;
break;
}
mutex_unlock(&dev->io_mutex);
return res;
}
static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
struct v4l2_encoder_cmd *a)
{
a->flags = 0;
switch (a->cmd) {
case V4L2_ENC_CMD_START:
case V4L2_ENC_CMD_STOP:
return 0;
default:
return -EINVAL;
}
}
static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_s_std = vidioc_s_std,
.vidioc_g_std = vidioc_g_std,
.vidioc_querystd = vidioc_querystd,
.vidioc_s_dv_timings = vidioc_s_dv_timings,
.vidioc_g_dv_timings = vidioc_g_dv_timings,
.vidioc_query_dv_timings= vidioc_query_dv_timings,
.vidioc_enum_dv_timings = vidioc_enum_dv_timings,
.vidioc_dv_timings_cap = vidioc_dv_timings_cap,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_enumaudio = vidioc_enumaudio,
.vidioc_g_audio = vidioc_g_audio,
.vidioc_s_audio = vidioc_s_audio,
.vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_encoder_cmd = vidioc_encoder_cmd,
.vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static void hdpvr_device_release(struct video_device *vdev)
{
struct hdpvr_device *dev = video_get_drvdata(vdev);
hdpvr_delete(dev);
mutex_lock(&dev->io_mutex);
destroy_workqueue(dev->workqueue);
mutex_unlock(&dev->io_mutex);
v4l2_device_unregister(&dev->v4l2_dev);
v4l2_ctrl_handler_free(&dev->hdl);
#if IS_ENABLED(CONFIG_I2C)
mutex_lock(&dev->i2c_mutex);
i2c_del_adapter(&dev->i2c_adapter);
mutex_unlock(&dev->i2c_mutex);
#endif
kfree(dev->usbc_buf);
kfree(dev);
}
static const struct video_device hdpvr_video_template = {
.fops = &hdpvr_fops,
.release = hdpvr_device_release,
.ioctl_ops = &hdpvr_ioctl_ops,
.tvnorms = V4L2_STD_ALL,
};
static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
.try_ctrl = hdpvr_try_ctrl,
.s_ctrl = hdpvr_s_ctrl,
};
int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
int devnum)
{
struct v4l2_ctrl_handler *hdl = &dev->hdl;
bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
int res;
dev->cur_std = V4L2_STD_525_60;
dev->width = 720;
dev->height = 480;
dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
v4l2_ctrl_handler_init(hdl, 11);
if (dev->fw_ver > 0x15) {
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
} else {
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
}
v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_STREAM_TYPE,
V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_AUDIO_ENCODING,
ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_VIDEO_ENCODING,
V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE,
1000000, 13500000, 100000, 6500000);
dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1100000, 20200000, 100000, 9000000);
dev->v4l2_dev.ctrl_handler = hdl;
if (hdl->error) {
res = hdl->error;
v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
goto error;
}
v4l2_ctrl_cluster(3, &dev->video_mode);
res = v4l2_ctrl_handler_setup(hdl);
if (res < 0) {
v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
goto error;
}
dev->video_dev = video_device_alloc();
if (!dev->video_dev) {
v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
res = -ENOMEM;
goto error;
}
*dev->video_dev = hdpvr_video_template;
strcpy(dev->video_dev->name, "Hauppauge HD PVR");
dev->video_dev->v4l2_dev = &dev->v4l2_dev;
video_set_drvdata(dev->video_dev, dev);
res = video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum);
if (res < 0) {
v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
goto error;
}
return 0;
error:
v4l2_ctrl_handler_free(hdl);
return res;
}
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