diff options
Diffstat (limited to 'drivers/media/video/hdpvr/hdpvr-video.c')
| -rw-r--r-- | drivers/media/video/hdpvr/hdpvr-video.c | 1248 |
1 files changed, 1248 insertions, 0 deletions
diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c new file mode 100644 index 000000000000..3e6ffee8dfed --- /dev/null +++ b/drivers/media/video/hdpvr/hdpvr-video.c @@ -0,0 +1,1248 @@ +/* + * Hauppauge HD PVR USB driver - video 4 linux 2 interface + * + * Copyright (C) 2008 Janne Grunau (j@jannau.net) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2. + * + */ + +#include <linux/kernel.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/version.h> +#include <linux/workqueue.h> + +#include <linux/videodev2.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include "hdpvr.h" + +#define BULK_URB_TIMEOUT 1250 /* 1.25 seconds */ + +#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)); } + +struct hdpvr_fh { + struct hdpvr_device *dev; +}; + +static uint list_size(struct list_head *list) +{ + struct list_head *tmp; + uint count = 0; + + list_for_each(tmp, list) { + count++; + } + + return count; +} + +/*=========================================================================*/ +/* urb callback */ +static void hdpvr_read_bulk_callback(struct urb *urb) +{ + struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context; + struct hdpvr_device *dev = buf->dev; + + /* marking buffer as received and wake waiting */ + buf->status = BUFSTAT_READY; + wake_up_interruptible(&dev->wait_data); +} + +/*=========================================================================*/ +/* bufffer bits */ + +/* function expects dev->io_mutex to be hold by caller */ +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_buffer_free(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; +} + +/* function expects dev->io_mutex to be hold by caller */ +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; +} + +/* function expects dev->io_mutex to be hold by caller */ +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; + } + buf->urb = urb; + + mem = usb_buffer_alloc(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; + } + + 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->status = BUFSTAT_AVAILABLE; + list_add_tail(&buf->buff_list, &dev->free_buff_list); + } + return 0; +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 availbale\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; +} + +/* function expects dev->io_mutex to be hold by caller */ +static int hdpvr_start_streaming(struct hdpvr_device *dev) +{ + int ret; + struct hdpvr_video_info *vidinf; + + if (dev->status == STATUS_STREAMING) + return 0; + else if (dev->status != STATUS_IDLE) + return -EAGAIN; + + vidinf = get_video_info(dev); + + if (vidinf) { + v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, + "video signal: %dx%d@%dhz\n", vidinf->width, + vidinf->height, vidinf->fps); + kfree(vidinf); + + /* start streaming 2 request */ + 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); + + hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); + + 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"); + dev->status = STATUS_STREAMING; + + return 0; + } + msleep(250); + v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, + "no video signal at input %d\n", dev->options.video_input); + return -EAGAIN; +} + + +/* function expects dev->io_mutex to be hold by caller */ +static int hdpvr_stop_streaming(struct hdpvr_device *dev) +{ + uint actual_length, 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); + /* kill the still outstanding urbs */ + hdpvr_cancel_queue(dev); + + /* emptying the device buffer beforeshutting it down */ + 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)) { + /* wait */ + msleep(5); + 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; +} + + +/*=======================================================================*/ +/* + * video 4 linux 2 file operations + */ + +static int hdpvr_open(struct file *file) +{ + struct hdpvr_device *dev; + struct hdpvr_fh *fh; + int retval = -ENOMEM; + + dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file)); + if (!dev) { + v4l2_err(&dev->v4l2_dev, "open failing with with ENODEV\n"); + retval = -ENODEV; + goto err; + } + + fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL); + if (!fh) { + v4l2_err(&dev->v4l2_dev, "Out of memory\n"); + goto err; + } + /* lock the device to allow correctly handling errors + * in resumption */ + mutex_lock(&dev->io_mutex); + dev->open_count++; + + fh->dev = dev; + + /* save our object in the file's private structure */ + file->private_data = fh; + + retval = 0; +err: + mutex_unlock(&dev->io_mutex); + return retval; +} + +static int hdpvr_release(struct file *file) +{ + struct hdpvr_fh *fh = (struct hdpvr_fh *)file->private_data; + struct hdpvr_device *dev = fh->dev; + + if (!dev) + return -ENODEV; + + mutex_lock(&dev->io_mutex); + if (!(--dev->open_count) && dev->status == STATUS_STREAMING) + hdpvr_stop_streaming(dev); + + mutex_unlock(&dev->io_mutex); + + return 0; +} + +/* + * hdpvr_v4l2_read() + * will allocate buffers when called for the first time + */ +static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, + loff_t *pos) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + struct hdpvr_buffer *buf = NULL; + struct urb *urb; + unsigned int ret = 0; + int rem, cnt; + + if (*pos) + return -ESPIPE; + + if (!dev) + return -ENODEV; + + 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; + } + print_buffer_status(); + } + mutex_unlock(&dev->io_mutex); + + /* wait for the first buffer */ + 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) { + /* return nonblocking */ + 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; + + /* set remaining bytes to copy */ + 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; + + /* finished, take next buffer */ + 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) +{ + struct hdpvr_buffer *buf = NULL; + struct hdpvr_fh *fh = (struct hdpvr_fh *)filp->private_data; + struct hdpvr_device *dev = fh->dev; + unsigned int mask = 0; + + mutex_lock(&dev->io_mutex); + + if (video_is_unregistered(dev->video_dev)) + return -EIO; + + 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; + } + + print_buffer_status(); + } + mutex_unlock(&dev->io_mutex); + + buf = hdpvr_get_next_buffer(dev); + /* only wait if no data is available */ + 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, +}; + +/*=======================================================================*/ +/* + * V4L2 ioctl handling + */ + +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, "Haupauge HD PVR"); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + cap->version = HDPVR_VERSION; + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_AUDIO | + V4L2_CAP_READWRITE; + return 0; +} + +static int vidioc_s_std(struct file *file, void *private_data, + v4l2_std_id *std) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + u8 std_type = 1; + + if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60)) + std_type = 0; + + return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); +} + +static const char *iname[] = { + [HDPVR_COMPONENT] = "Component", + [HDPVR_SVIDEO] = "S-Video", + [HDPVR_COMPOSITE] = "Composite", +}; + +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + 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->std = dev->video_dev->tvnorms; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *private_data, + unsigned int index) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int retval; + + if (index >= HDPVR_VIDEO_INPUTS) + return -EINVAL; + + if (dev->status != STATUS_IDLE) + return -EAGAIN; + + 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_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + + *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, + struct v4l2_audio *audio) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int retval; + + if (audio->index >= HDPVR_AUDIO_INPUTS) + return -EINVAL; + + if (dev->status != STATUS_IDLE) + return -EAGAIN; + + 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_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + + 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 const s32 supported_v4l2_ctrls[] = { + V4L2_CID_BRIGHTNESS, + V4L2_CID_CONTRAST, + V4L2_CID_SATURATION, + V4L2_CID_HUE, + V4L2_CID_SHARPNESS, + V4L2_CID_MPEG_AUDIO_ENCODING, + V4L2_CID_MPEG_VIDEO_ENCODING, + V4L2_CID_MPEG_VIDEO_BITRATE_MODE, + V4L2_CID_MPEG_VIDEO_BITRATE, + V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, +}; + +static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc, + int ac3) +{ + int err; + + switch (qc->id) { + case V4L2_CID_BRIGHTNESS: + return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86); + case V4L2_CID_CONTRAST: + return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80); + case V4L2_CID_SATURATION: + return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80); + case V4L2_CID_HUE: + return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80); + case V4L2_CID_SHARPNESS: + return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80); + case V4L2_CID_MPEG_AUDIO_ENCODING: + return v4l2_ctrl_query_fill( + qc, V4L2_MPEG_AUDIO_ENCODING_AAC, + ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 + : V4L2_MPEG_AUDIO_ENCODING_AAC, + 1, V4L2_MPEG_AUDIO_ENCODING_AAC); + case V4L2_CID_MPEG_VIDEO_ENCODING: + return v4l2_ctrl_query_fill( + qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, + V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1, + V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); + +/* case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */ +/* return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */ + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + return v4l2_ctrl_query_fill( + qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, + V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1, + V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); + + case V4L2_CID_MPEG_VIDEO_BITRATE: + return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000, + 6500000); + case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: + err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000, + 9000000); + if (!err && opt->bitrate_mode == HDPVR_CONSTANT) + qc->flags |= V4L2_CTRL_FLAG_INACTIVE; + return err; + default: + return -EINVAL; + } +} + +static int vidioc_queryctrl(struct file *file, void *private_data, + struct v4l2_queryctrl *qc) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int i, next; + u32 id = qc->id; + + memset(qc, 0, sizeof(*qc)); + + next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL); + qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL; + + for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) { + if (next) { + if (qc->id < supported_v4l2_ctrls[i]) + qc->id = supported_v4l2_ctrls[i]; + else + continue; + } + + if (qc->id == supported_v4l2_ctrls[i]) + return fill_queryctrl(&dev->options, qc, + dev->flags & HDPVR_FLAG_AC3_CAP); + + if (qc->id < supported_v4l2_ctrls[i]) + break; + } + + return -EINVAL; +} + +static int vidioc_g_ctrl(struct file *file, void *private_data, + struct v4l2_control *ctrl) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ctrl->value = dev->options.brightness; + break; + case V4L2_CID_CONTRAST: + ctrl->value = dev->options.contrast; + break; + case V4L2_CID_SATURATION: + ctrl->value = dev->options.saturation; + break; + case V4L2_CID_HUE: + ctrl->value = dev->options.hue; + break; + case V4L2_CID_SHARPNESS: + ctrl->value = dev->options.sharpness; + break; + default: + return -EINVAL; + } + return 0; +} + +static int vidioc_s_ctrl(struct file *file, void *private_data, + struct v4l2_control *ctrl) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int retval; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value); + if (!retval) + dev->options.brightness = ctrl->value; + break; + case V4L2_CID_CONTRAST: + retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value); + if (!retval) + dev->options.contrast = ctrl->value; + break; + case V4L2_CID_SATURATION: + retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value); + if (!retval) + dev->options.saturation = ctrl->value; + break; + case V4L2_CID_HUE: + retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value); + if (!retval) + dev->options.hue = ctrl->value; + break; + case V4L2_CID_SHARPNESS: + retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value); + if (!retval) + dev->options.sharpness = ctrl->value; + break; + default: + return -EINVAL; + } + + return retval; +} + + +static int hdpvr_get_ctrl(struct hdpvr_options *opt, + struct v4l2_ext_control *ctrl) +{ + switch (ctrl->id) { + case V4L2_CID_MPEG_AUDIO_ENCODING: + ctrl->value = opt->audio_codec; + break; + case V4L2_CID_MPEG_VIDEO_ENCODING: + ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC; + break; +/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ +/* ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */ +/* break; */ + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT + ? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR + : V4L2_MPEG_VIDEO_BITRATE_MODE_VBR; + break; + case V4L2_CID_MPEG_VIDEO_BITRATE: + ctrl->value = opt->bitrate * 100000; + break; + case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: + ctrl->value = opt->peak_bitrate * 100000; + break; + case V4L2_CID_MPEG_STREAM_TYPE: + ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS; + break; + default: + return -EINVAL; + } + return 0; +} + +static int vidioc_g_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctrls) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int i, err = 0; + + if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) { + for (i = 0; i < ctrls->count; i++) { + struct v4l2_ext_control *ctrl = ctrls->controls + i; + + err = hdpvr_get_ctrl(&dev->options, ctrl); + if (err) { + ctrls->error_idx = i; + break; + } + } + return err; + + } + + return -EINVAL; +} + + +static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3) +{ + int ret = -EINVAL; + + switch (ctrl->id) { + case V4L2_CID_MPEG_AUDIO_ENCODING: + if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC || + (ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3)) + ret = 0; + break; + case V4L2_CID_MPEG_VIDEO_ENCODING: + if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC) + ret = 0; + break; +/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ +/* if (ctrl->value == 0 || ctrl->value == 128) */ +/* ret = 0; */ +/* break; */ + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR || + ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) + ret = 0; + break; + case V4L2_CID_MPEG_VIDEO_BITRATE: + { + uint bitrate = ctrl->value / 100000; + if (bitrate >= 10 && bitrate <= 135) + ret = 0; + break; + } + case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: + { + uint peak_bitrate = ctrl->value / 100000; + if (peak_bitrate >= 10 && peak_bitrate <= 202) + ret = 0; + break; + } + case V4L2_CID_MPEG_STREAM_TYPE: + if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS) + ret = 0; + break; + default: + return -EINVAL; + } + return 0; +} + +static int vidioc_try_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctrls) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int i, err = 0; + + if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) { + for (i = 0; i < ctrls->count; i++) { + struct v4l2_ext_control *ctrl = ctrls->controls + i; + + err = hdpvr_try_ctrl(ctrl, + dev->flags & HDPVR_FLAG_AC3_CAP); + if (err) { + ctrls->error_idx = i; + break; + } + } + return err; + } + + return -EINVAL; +} + + +static int hdpvr_set_ctrl(struct hdpvr_device *dev, + struct v4l2_ext_control *ctrl) +{ + struct hdpvr_options *opt = &dev->options; + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_MPEG_AUDIO_ENCODING: + if (dev->flags & HDPVR_FLAG_AC3_CAP) { + opt->audio_codec = ctrl->value; + ret = hdpvr_set_audio(dev, opt->audio_input, + opt->audio_codec); + } + break; + case V4L2_CID_MPEG_VIDEO_ENCODING: + break; +/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ +/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ +/* opt->gop_mode |= 0x2; */ +/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ +/* opt->gop_mode); */ +/* } */ +/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ +/* opt->gop_mode &= ~0x2; */ +/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ +/* opt->gop_mode); */ +/* } */ +/* break; */ + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR && + opt->bitrate_mode != HDPVR_CONSTANT) { + opt->bitrate_mode = HDPVR_CONSTANT; + hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, + opt->bitrate_mode); + } + if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && + opt->bitrate_mode == HDPVR_CONSTANT) { + opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; + hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, + opt->bitrate_mode); + } + break; + case V4L2_CID_MPEG_VIDEO_BITRATE: { + uint bitrate = ctrl->value / 100000; + + opt->bitrate = bitrate; + if (bitrate >= opt->peak_bitrate) + opt->peak_bitrate = bitrate+1; + + hdpvr_set_bitrate(dev); + break; + } + case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: { + uint peak_bitrate = ctrl->value / 100000; + + if (opt->bitrate_mode == HDPVR_CONSTANT) + break; + + if (opt->bitrate < peak_bitrate) { + opt->peak_bitrate = peak_bitrate; + hdpvr_set_bitrate(dev); + } else + ret = -EINVAL; + break; + } + case V4L2_CID_MPEG_STREAM_TYPE: + break; + default: + return -EINVAL; + } + return ret; +} + +static int vidioc_s_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctrls) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + int i, err = 0; + + if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) { + for (i = 0; i < ctrls->count; i++) { + struct v4l2_ext_control *ctrl = ctrls->controls + i; + + err = hdpvr_try_ctrl(ctrl, + dev->flags & HDPVR_FLAG_AC3_CAP); + if (err) { + ctrls->error_idx = i; + break; + } + err = hdpvr_set_ctrl(dev, ctrl); + if (err) { + ctrls->error_idx = i; + break; + } + } + return err; + + } + + return -EINVAL; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, + struct v4l2_fmtdesc *f) +{ + + if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + 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 *private_data, + struct v4l2_format *f) +{ + struct hdpvr_fh *fh = file->private_data; + struct hdpvr_device *dev = fh->dev; + struct hdpvr_video_info *vid_info; + + if (!dev) + return -ENODEV; + + vid_info = get_video_info(dev); + if (!vid_info) + return -EFAULT; + + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; + f->fmt.pix.width = vid_info->width; + f->fmt.pix.height = vid_info->height; + f->fmt.pix.sizeimage = dev->bulk_in_size; + f->fmt.pix.colorspace = 0; + f->fmt.pix.bytesperline = 0; + f->fmt.pix.field = V4L2_FIELD_ANY; + + kfree(vid_info); + return 0; +} + +static int vidioc_encoder_cmd(struct file *filp, void *priv, + struct v4l2_encoder_cmd *a) +{ + struct hdpvr_fh *fh = filp->private_data; + struct hdpvr_device *dev = fh->dev; + int res; + + mutex_lock(&dev->io_mutex); + + memset(&a->raw, 0, sizeof(a->raw)); + switch (a->cmd) { + case V4L2_ENC_CMD_START: + a->flags = 0; + res = hdpvr_start_streaming(dev); + break; + case V4L2_ENC_CMD_STOP: + res = hdpvr_stop_streaming(dev); + break; + default: + v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, + "Unsupported encoder cmd %d\n", a->cmd); + res = -EINVAL; + } + mutex_unlock(&dev->io_mutex); + return res; +} + +static int vidioc_try_encoder_cmd(struct file *filp, void *priv, + struct v4l2_encoder_cmd *a) +{ + 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_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_queryctrl = vidioc_queryctrl, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls, + .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls, + .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, + .vidioc_encoder_cmd = vidioc_encoder_cmd, + .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, +}; + +static void hdpvr_device_release(struct video_device *vdev) +{ + struct hdpvr_device *dev = video_get_drvdata(vdev); + + hdpvr_delete(dev); +} + +static const struct video_device hdpvr_video_template = { +/* .type = VFL_TYPE_GRABBER, */ +/* .type2 = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */ + .fops = &hdpvr_fops, + .release = hdpvr_device_release, + .ioctl_ops = &hdpvr_ioctl_ops, + .tvnorms = + V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_B | + V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I | + V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N | + V4L2_STD_PAL_60, +}; + +int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, + int devnum) +{ + /* setup and register video device */ + dev->video_dev = video_device_alloc(); + if (!dev->video_dev) { + v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n"); + goto error; + } + + *(dev->video_dev) = hdpvr_video_template; + strcpy(dev->video_dev->name, "Hauppauge HD PVR"); + dev->video_dev->parent = parent; + video_set_drvdata(dev->video_dev, dev); + + if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) { + v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); + goto error; + } + + return 0; +error: + return -ENOMEM; +} |
