// SPDX-License-Identifier: GPL-2.0-only /* * vivid-vbi-cap.c - vbi capture support functions. * * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. */ #include #include #include #include #include "vivid-core.h" #include "vivid-kthread-cap.h" #include "vivid-vbi-cap.h" #include "vivid-vbi-gen.h" #include "vivid-vid-common.h" static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr) { struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen; bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr); if (!is_60hz) { if (vivid_vid_can_loop(dev)) { if (dev->vbi_out_have_wss) { vbi_gen->data[12].data[0] = dev->vbi_out_wss[0]; vbi_gen->data[12].data[1] = dev->vbi_out_wss[1]; } else { vbi_gen->data[12].id = 0; } } else { switch (tpg_g_video_aspect(&dev->tpg)) { case TPG_VIDEO_ASPECT_14X9_CENTRE: vbi_gen->data[12].data[0] = 0x01; break; case TPG_VIDEO_ASPECT_16X9_CENTRE: vbi_gen->data[12].data[0] = 0x0b; break; case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC: vbi_gen->data[12].data[0] = 0x07; break; case TPG_VIDEO_ASPECT_4X3: default: vbi_gen->data[12].data[0] = 0x08; break; } } } else if (vivid_vid_can_loop(dev) && is_60hz) { if (dev->vbi_out_have_cc[0]) { vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0]; vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1]; } else { vbi_gen->data[0].id = 0; } if (dev->vbi_out_have_cc[1]) { vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0]; vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1]; } else { vbi_gen->data[1].id = 0; } } } static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi) { bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; vbi->sampling_rate = 27000000; vbi->offset = 24; vbi->samples_per_line = 1440; vbi->sample_format = V4L2_PIX_FMT_GREY; vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5; vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5; vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18; vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0; vbi->reserved[0] = 0; vbi->reserved[1] = 0; } void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) { struct v4l2_vbi_format vbi; u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); vivid_g_fmt_vbi_cap(dev, &vbi); buf->vb.sequence = dev->vbi_cap_seq_count; if (dev->field_cap == V4L2_FIELD_ALTERNATE) buf->vb.sequence /= 2; vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence); memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0)); if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf); } void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) { struct v4l2_sliced_vbi_data *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); buf->vb.sequence = dev->vbi_cap_seq_count; if (dev->field_cap == V4L2_FIELD_ALTERNATE) buf->vb.sequence /= 2; vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence); memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0)); if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) { unsigned i; for (i = 0; i < 25; i++) vbuf[i] = dev->vbi_gen.data[i]; } } static int vbi_cap_queue_setup(struct vb2_queue *vq, unsigned *nbuffers, unsigned *nplanes, unsigned sizes[], struct device *alloc_devs[]) { struct vivid_dev *dev = vb2_get_drv_priv(vq); bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? 36 * sizeof(struct v4l2_sliced_vbi_data) : 1440 * 2 * (is_60hz ? 12 : 18); if (!vivid_is_sdtv_cap(dev)) return -EINVAL; if (*nplanes) return sizes[0] < size ? -EINVAL : 0; sizes[0] = size; *nplanes = 1; return 0; } static int vbi_cap_buf_prepare(struct vb2_buffer *vb) { struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? 36 * sizeof(struct v4l2_sliced_vbi_data) : 1440 * 2 * (is_60hz ? 12 : 18); dprintk(dev, 1, "%s\n", __func__); if (dev->buf_prepare_error) { /* * Error injection: test what happens if buf_prepare() returns * an error. */ dev->buf_prepare_error = false; return -EINVAL; } if (vb2_plane_size(vb, 0) < size) { dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", __func__, vb2_plane_size(vb, 0), size); return -EINVAL; } vb2_set_plane_payload(vb, 0, size); return 0; } static void vbi_cap_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb); dprintk(dev, 1, "%s\n", __func__); spin_lock(&dev->slock); list_add_tail(&buf->list, &dev->vbi_cap_active); spin_unlock(&dev->slock); } static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count) { struct vivid_dev *dev = vb2_get_drv_priv(vq); int err; dprintk(dev, 1, "%s\n", __func__); dev->vbi_cap_seq_count = 0; if (dev->start_streaming_error) { dev->start_streaming_error = false; err = -EINVAL; } else { err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming); } if (err) { struct vivid_buffer *buf, *tmp; list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) { list_del(&buf->list); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); } } return err; } /* abort streaming and wait for last buffer */ static void vbi_cap_stop_streaming(struct vb2_queue *vq) { struct vivid_dev *dev = vb2_get_drv_priv(vq); dprintk(dev, 1, "%s\n", __func__); vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming); } static void vbi_cap_buf_request_complete(struct vb2_buffer *vb) { struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap); } const struct vb2_ops vivid_vbi_cap_qops = { .queue_setup = vbi_cap_queue_setup, .buf_prepare = vbi_cap_buf_prepare, .buf_queue = vbi_cap_buf_queue, .start_streaming = vbi_cap_start_streaming, .stop_streaming = vbi_cap_stop_streaming, .buf_request_complete = vbi_cap_buf_request_complete, }; int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct vivid_dev *dev = video_drvdata(file); struct v4l2_vbi_format *vbi = &f->fmt.vbi; if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap) return -EINVAL; vivid_g_fmt_vbi_cap(dev, vbi); return 0; } int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { struct vivid_dev *dev = video_drvdata(file); int ret = vidioc_g_fmt_vbi_cap(file, priv, f); if (ret) return ret; if (f->type != V4L2_BUF_TYPE_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) return -EBUSY; return 0; } void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set) { vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; vbi->service_set = service_set; memset(vbi->service_lines, 0, sizeof(vbi->service_lines)); memset(vbi->reserved, 0, sizeof(vbi->reserved)); if (vbi->service_set == 0) return; if (vbi->service_set & V4L2_SLICED_CAPTION_525) { vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525; vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525; } if (vbi->service_set & V4L2_SLICED_WSS_625) { unsigned i; for (i = 7; i <= 18; i++) vbi->service_lines[0][i] = vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; } } int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct vivid_dev *dev = video_drvdata(file); struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) return -EINVAL; vivid_fill_service_lines(vbi, dev->service_set_cap); return 0; } int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct vivid_dev *dev = video_drvdata(file); struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; u32 service_set = vbi->service_set; if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) return -EINVAL; service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; vivid_fill_service_lines(vbi, service_set); return 0; } int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) { struct vivid_dev *dev = video_drvdata(file); struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt); if (ret) return ret; if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) return -EBUSY; dev->service_set_cap = vbi->service_set; return 0; } int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) { struct vivid_dev *dev = video_drvdata(file); struct video_device *vdev = video_devdata(file); bool is_60hz; if (vdev->vfl_dir == VFL_DIR_RX) { is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap || cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) return -EINVAL; } else { is_60hz = dev->std_out & V4L2_STD_525_60; if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out || cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) return -EINVAL; } cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; if (is_60hz) { cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525; cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525; } else { unsigned i; for (i = 7; i <= 18; i++) cap->service_lines[0][i] = cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; cap->service_lines[0][23] = V4L2_SLICED_WSS_625; } return 0; }