mirror of https://gitee.com/openkylin/linux.git
249 lines
7.2 KiB
C
249 lines
7.2 KiB
C
/*
|
|
* vivid-vbi-out.c - vbi output 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-out.h"
|
|
#include "vivid-vbi-out.h"
|
|
#include "vivid-vbi-cap.h"
|
|
|
|
static int vbi_out_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_out & V4L2_STD_525_60;
|
|
unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ?
|
|
36 * sizeof(struct v4l2_sliced_vbi_data) :
|
|
1440 * 2 * (is_60hz ? 12 : 18);
|
|
|
|
if (!vivid_is_svid_out(dev))
|
|
return -EINVAL;
|
|
|
|
sizes[0] = size;
|
|
|
|
if (vq->num_buffers + *nbuffers < 2)
|
|
*nbuffers = 2 - vq->num_buffers;
|
|
|
|
*nplanes = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int vbi_out_buf_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
bool is_60hz = dev->std_out & V4L2_STD_525_60;
|
|
unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ?
|
|
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_out_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_out_active);
|
|
spin_unlock(&dev->slock);
|
|
}
|
|
|
|
static int vbi_out_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_out_seq_count = 0;
|
|
if (dev->start_streaming_error) {
|
|
dev->start_streaming_error = false;
|
|
err = -EINVAL;
|
|
} else {
|
|
err = vivid_start_generating_vid_out(dev, &dev->vbi_out_streaming);
|
|
}
|
|
if (err) {
|
|
struct vivid_buffer *buf, *tmp;
|
|
|
|
list_for_each_entry_safe(buf, tmp, &dev->vbi_out_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_out_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_out(dev, &dev->vbi_out_streaming);
|
|
dev->vbi_out_have_wss = false;
|
|
dev->vbi_out_have_cc[0] = false;
|
|
dev->vbi_out_have_cc[1] = false;
|
|
}
|
|
|
|
const struct vb2_ops vivid_vbi_out_qops = {
|
|
.queue_setup = vbi_out_queue_setup,
|
|
.buf_prepare = vbi_out_buf_prepare,
|
|
.buf_queue = vbi_out_buf_queue,
|
|
.start_streaming = vbi_out_start_streaming,
|
|
.stop_streaming = vbi_out_stop_streaming,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
};
|
|
|
|
int vidioc_g_fmt_vbi_out(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct vivid_dev *dev = video_drvdata(file);
|
|
struct v4l2_vbi_format *vbi = &f->fmt.vbi;
|
|
bool is_60hz = dev->std_out & V4L2_STD_525_60;
|
|
|
|
if (!vivid_is_svid_out(dev) || !dev->has_raw_vbi_out)
|
|
return -EINVAL;
|
|
|
|
vbi->sampling_rate = 25000000;
|
|
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;
|
|
return 0;
|
|
}
|
|
|
|
int vidioc_s_fmt_vbi_out(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct vivid_dev *dev = video_drvdata(file);
|
|
int ret = vidioc_g_fmt_vbi_out(file, priv, f);
|
|
|
|
if (ret)
|
|
return ret;
|
|
if (vb2_is_busy(&dev->vb_vbi_out_q))
|
|
return -EBUSY;
|
|
dev->stream_sliced_vbi_out = false;
|
|
dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_VBI_OUTPUT;
|
|
return 0;
|
|
}
|
|
|
|
int vidioc_g_fmt_sliced_vbi_out(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_svid_out(dev) || !dev->has_sliced_vbi_out)
|
|
return -EINVAL;
|
|
|
|
vivid_fill_service_lines(vbi, dev->service_set_out);
|
|
return 0;
|
|
}
|
|
|
|
int vidioc_try_fmt_sliced_vbi_out(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_out & V4L2_STD_525_60;
|
|
u32 service_set = vbi->service_set;
|
|
|
|
if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out)
|
|
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_out(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_out(file, fh, fmt);
|
|
|
|
if (ret)
|
|
return ret;
|
|
if (vb2_is_busy(&dev->vb_vbi_out_q))
|
|
return -EBUSY;
|
|
dev->service_set_out = vbi->service_set;
|
|
dev->stream_sliced_vbi_out = true;
|
|
dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_OUTPUT;
|
|
return 0;
|
|
}
|
|
|
|
void vivid_sliced_vbi_out_process(struct vivid_dev *dev, struct vivid_buffer *buf)
|
|
{
|
|
struct v4l2_sliced_vbi_data *vbi = vb2_plane_vaddr(&buf->vb, 0);
|
|
unsigned elems = vb2_get_plane_payload(&buf->vb, 0) / sizeof(*vbi);
|
|
|
|
dev->vbi_out_have_cc[0] = false;
|
|
dev->vbi_out_have_cc[1] = false;
|
|
dev->vbi_out_have_wss = false;
|
|
while (elems--) {
|
|
switch (vbi->id) {
|
|
case V4L2_SLICED_CAPTION_525:
|
|
if ((dev->std_out & V4L2_STD_525_60) && vbi->line == 21) {
|
|
dev->vbi_out_have_cc[!!vbi->field] = true;
|
|
dev->vbi_out_cc[!!vbi->field][0] = vbi->data[0];
|
|
dev->vbi_out_cc[!!vbi->field][1] = vbi->data[1];
|
|
}
|
|
break;
|
|
case V4L2_SLICED_WSS_625:
|
|
if ((dev->std_out & V4L2_STD_625_50) &&
|
|
vbi->field == 0 && vbi->line == 23) {
|
|
dev->vbi_out_have_wss = true;
|
|
dev->vbi_out_wss[0] = vbi->data[0];
|
|
dev->vbi_out_wss[1] = vbi->data[1];
|
|
}
|
|
break;
|
|
}
|
|
vbi++;
|
|
}
|
|
}
|