diff options
Diffstat (limited to 'meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_cam.c')
| -rw-r--r-- | meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_cam.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_cam.c b/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_cam.c deleted file mode 100644 index d657ba8a..00000000 --- a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_cam.c +++ /dev/null @@ -1,359 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* Capture for virtio video device. - * - * Copyright 2021 OpenSynergy GmbH. - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/version.h> -#include <media/v4l2-event.h> -#include <media/v4l2-ioctl.h> - -#include "virtio_video.h" - -static int virtio_video_cam_start_streaming(struct vb2_queue *vq, - unsigned int count) -{ - struct virtio_video_stream *stream = vb2_get_drv_priv(vq); - - if (virtio_video_state(stream) == STREAM_STATE_ERROR) - return -EIO; - - if (virtio_video_state(stream) >= STREAM_STATE_INIT) - virtio_video_state_update(stream, STREAM_STATE_RUNNING); - - return 0; -} - -static void virtio_video_cam_stop_streaming(struct vb2_queue *vq) -{ - struct virtio_video_stream *stream = vb2_get_drv_priv(vq); - - virtio_video_queue_release_buffers(stream, - VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); - - vb2_wait_for_all_buffers(vq); -} - -static const struct vb2_ops virtio_video_cam_qops = { - .queue_setup = virtio_video_queue_setup, - .buf_init = virtio_video_buf_init, - .buf_cleanup = virtio_video_buf_cleanup, - .buf_queue = virtio_video_buf_queue, - .start_streaming = virtio_video_cam_start_streaming, - .stop_streaming = virtio_video_cam_stop_streaming, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, -}; - -static int virtio_video_cam_g_ctrl(struct v4l2_ctrl *ctrl) -{ - int ret = 0; - struct virtio_video_stream *stream = ctrl2stream(ctrl); - - if (virtio_video_state(stream) == STREAM_STATE_ERROR) - return -EIO; - - switch (ctrl->id) { - case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: - if (virtio_video_state(stream) >= - STREAM_STATE_DYNAMIC_RES_CHANGE) - ctrl->val = stream->out_info.min_buffers; - else - ctrl->val = 0; - break; - default: - ret = -EINVAL; - break; - } - - return ret; -} - -static const struct v4l2_ctrl_ops virtio_video_cam_ctrl_ops = { - .g_volatile_ctrl = virtio_video_cam_g_ctrl, -}; - -int virtio_video_cam_init_ctrls(struct virtio_video_stream *stream) -{ - struct v4l2_ctrl *ctrl; - - v4l2_ctrl_handler_init(&stream->ctrl_handler, 2); - - ctrl = v4l2_ctrl_new_std(&stream->ctrl_handler, - &virtio_video_cam_ctrl_ops, - V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, - MIN_BUFS_MIN, MIN_BUFS_MAX, MIN_BUFS_STEP, - MIN_BUFS_DEF); - - if (ctrl) - ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; - - if (stream->ctrl_handler.error) - return stream->ctrl_handler.error; - - v4l2_ctrl_handler_setup(&stream->ctrl_handler); - - return 0; -} - -int virtio_video_cam_init_queues(void *priv, struct vb2_queue *src_vq, - struct vb2_queue *dst_vq) -{ - struct virtio_video_stream *stream = priv; - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - struct device *dev = vvd->v4l2_dev.dev; - int vq_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; - - if (!vvd->is_mplane_cam) - vq_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - dst_vq->type = vq_type; - dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; - dst_vq->drv_priv = stream; - dst_vq->buf_struct_size = sizeof(struct virtio_video_buffer); - dst_vq->ops = &virtio_video_cam_qops; - dst_vq->mem_ops = virtio_video_mem_ops(vvd); - dst_vq->min_buffers_needed = stream->out_info.min_buffers; - dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - dst_vq->lock = &stream->vq_mutex; - dst_vq->gfp_flags = virtio_video_gfp_flags(vvd); - dst_vq->dev = dev; - - return vb2_queue_init(dst_vq); -} - -int virtio_video_cam_try_fmt(struct file *file, void *fh, struct v4l2_format *f) -{ - struct virtio_video_stream *stream = file2stream(file); - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - struct v4l2_format *fmt_try = f; - struct v4l2_format fmt_mp = { 0 }; - int ret; - - if (!vvd->is_mplane_cam) { - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - fmt_mp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; - fmt_try = &fmt_mp; - - virtio_video_pix_fmt_sp2mp(&f->fmt.pix, &fmt_try->fmt.pix_mp); - } - - ret = virtio_video_try_fmt(stream, fmt_try); - if (ret) - return ret; - - if (!vvd->is_mplane_cam) { - if (fmt_try->fmt.pix_mp.num_planes != 1) - return -EINVAL; - - virtio_video_pix_fmt_mp2sp(&fmt_try->fmt.pix_mp, &f->fmt.pix); - } - - return 0; -} - -static int virtio_video_cam_enum_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_fmtdesc *f) -{ - struct virtio_video_stream *stream = file2stream(file); - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - struct video_format *fmt; - int idx = 0; - - if (virtio_video_state(stream) == STREAM_STATE_ERROR) - return -EIO; - - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) - return -EINVAL; - - if (f->index >= vvd->num_output_fmts) - return -EINVAL; - - list_for_each_entry(fmt, &vvd->output_fmt_list, formats_list_entry) { - if (f->index == idx) { - f->pixelformat = fmt->desc.format; - return 0; - } - idx++; - } - return -EINVAL; -} - -static int virtio_video_cam_g_fmt(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct virtio_video_stream *stream = file2stream(file); - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - struct v4l2_format fmt_mp = { 0 }; - struct v4l2_format *fmt_get = f; - int ret; - - if (!vvd->is_mplane_cam) { - fmt_mp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; - fmt_get = &fmt_mp; - } - - ret = virtio_video_g_fmt(file, fh, fmt_get); - if (ret) - return ret; - - if (virtio_video_state(stream) == STREAM_STATE_IDLE) - virtio_video_state_update(stream, STREAM_STATE_INIT); - - if (!vvd->is_mplane_cam) { - if (fmt_get->fmt.pix_mp.num_planes != 1) - return -EINVAL; - - virtio_video_pix_fmt_mp2sp(&fmt_get->fmt.pix_mp, &f->fmt.pix); - } - - return 0; -} - -static int virtio_video_cam_s_fmt(struct file *file, void *fh, - struct v4l2_format *f) -{ - int ret; - struct virtio_video_stream *stream = file2stream(file); - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - struct v4l2_format fmt_mp = { 0 }; - struct v4l2_format *fmt_set = f; - - if (!vvd->is_mplane_cam) { - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - fmt_mp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; - fmt_set = &fmt_mp; - - virtio_video_pix_fmt_sp2mp(&f->fmt.pix, &fmt_set->fmt.pix_mp); - } - - ret = virtio_video_s_fmt(file, fh, fmt_set); - if (ret) - return ret; - - if (virtio_video_state(stream) == STREAM_STATE_IDLE) - virtio_video_state_update(stream, STREAM_STATE_INIT); - - if (!vvd->is_mplane_cam) { - if (fmt_set->fmt.pix_mp.num_planes != 1) - return -EINVAL; - - virtio_video_pix_fmt_mp2sp(&fmt_set->fmt.pix_mp, &f->fmt.pix); - } - - return 0; -} - -static int virtio_video_cam_s_selection(struct file *file, void *fh, - struct v4l2_selection *sel) -{ - struct virtio_video_stream *stream = file2stream(file); - struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); - int ret; - - if (V4L2_TYPE_IS_OUTPUT(sel->type)) - return -EINVAL; - - switch (sel->target) { - case V4L2_SEL_TGT_CROP: - stream->out_info.crop.top = sel->r.top; - stream->out_info.crop.left = sel->r.left; - stream->out_info.crop.width = sel->r.width; - stream->out_info.crop.height = sel->r.height; - v4l2_info(&vvd->v4l2_dev, - "Set : top:%d, left:%d, w:%d, h:%d\n", - sel->r.top, sel->r.left, sel->r.width, sel->r.height); - break; - default: - return -EINVAL; - } - - ret = virtio_video_cmd_set_params(vvd, stream, &stream->out_info, - VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); - if (ret) - return -EINVAL; - - ret = virtio_video_cmd_get_params(vvd, stream, - VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); - return ret; -} - -static const struct v4l2_ioctl_ops virtio_video_cam_ioctl_ops = { - .vidioc_querycap = virtio_video_querycap, - -#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 3, 0)) - .vidioc_enum_fmt_vid_cap_mplane = virtio_video_cam_enum_fmt_vid_cap, -#endif - .vidioc_try_fmt_vid_cap_mplane = virtio_video_cam_try_fmt, - .vidioc_g_fmt_vid_cap_mplane = virtio_video_cam_g_fmt, - .vidioc_s_fmt_vid_cap_mplane = virtio_video_cam_s_fmt, - - .vidioc_enum_fmt_vid_cap = virtio_video_cam_enum_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = virtio_video_cam_try_fmt, - .vidioc_g_fmt_vid_cap = virtio_video_cam_g_fmt, - .vidioc_s_fmt_vid_cap = virtio_video_cam_s_fmt, - - .vidioc_g_selection = virtio_video_g_selection, - .vidioc_s_selection = virtio_video_cam_s_selection, - - .vidioc_enum_frameintervals = virtio_video_enum_framemintervals, - .vidioc_enum_framesizes = virtio_video_enum_framesizes, - - .vidioc_reqbufs = virtio_video_reqbufs, - .vidioc_querybuf = vb2_ioctl_querybuf, - .vidioc_qbuf = virtio_video_qbuf, - .vidioc_dqbuf = virtio_video_dqbuf, - .vidioc_prepare_buf = vb2_ioctl_prepare_buf, - .vidioc_create_bufs = vb2_ioctl_create_bufs, - .vidioc_expbuf = vb2_ioctl_expbuf, - - .vidioc_streamon = vb2_ioctl_streamon, - .vidioc_streamoff = vb2_ioctl_streamoff, - - .vidioc_subscribe_event = virtio_video_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -void *virtio_video_cam_get_fmt_list(struct virtio_video_device *vvd) -{ - return &vvd->output_fmt_list; -} - -static struct virtio_video_device_ops virtio_video_cam_ops = { - .init_ctrls = virtio_video_cam_init_ctrls, - .init_queues = virtio_video_cam_init_queues, - .get_fmt_list = virtio_video_cam_get_fmt_list, -}; - -int virtio_video_cam_init(struct virtio_video_device *vvd) -{ - ssize_t num; - struct video_device *vd = &vvd->video_dev; - - vd->ioctl_ops = &virtio_video_cam_ioctl_ops; - vvd->ops = &virtio_video_cam_ops; - - num = strscpy(vd->name, "camera", sizeof(vd->name)); - if (num < 0) - return num; - - return 0; -} |