- 根目录:
- drivers
- media
- platform
- vivid
- vivid-vbi-cap.c
/*
* vivid-vbi-cap.c - vbi capture support functions.
*
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include "vivid-core.h"
#include "vivid-kthread-cap.h"
#include "vivid-vbi-cap.h"
#include "vivid-vbi-gen.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 & V4L2_STD_525_60;
vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
if (!is_60hz) {
if (dev->loop_video) {
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 (dev->loop_video && 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 & 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, 0);
vivid_g_fmt_vbi_cap(dev, &vbi);
buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count;
if (dev->field_cap == V4L2_FIELD_ALTERNATE)
buf->vb.v4l2_buf.sequence /= 2;
vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence);
memset(vbuf, 0x10, vb2_plane_size(&buf->vb, 0));
if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset;
}
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, 0);
buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count;
if (dev->field_cap == V4L2_FIELD_ALTERNATE)
buf->vb.v4l2_buf.sequence /= 2;
vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence);
memset(vbuf, 0, vb2_plane_size(&buf->vb, 0));
if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
unsigned i;
for (i = 0; i < 25; i++)
vbuf[i] = dev->vbi_gen.data[i];
}
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset;
}
static int vbi_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
unsigned *nbuffers, unsigned *nplanes,
unsigned sizes[], void *alloc_ctxs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
bool is_60hz = dev->std_cap & 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;
sizes[0] = size;
if (vq->num_buffers + *nbuffers < 2)
*nbuffers = 2 - vq->num_buffers;
*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 & 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 vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
struct vivid_buffer *buf = container_of(vb, 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_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);
}
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,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
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 (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
return -EBUSY;
dev->stream_sliced_vbi_cap = false;
dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
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 & 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 (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
return -EBUSY;
dev->service_set_cap = vbi->service_set;
dev->stream_sliced_vbi_cap = true;
dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
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 & 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;
}