- 根目录:
- drivers
- media
- platform
- vivid
- vivid-vid-out.c
/*
* vivid-vid-out.c - video 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/sched.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/v4l2-dv-timings.h>
#include "vivid-core.h"
#include "vivid-vid-common.h"
#include "vivid-kthread-out.h"
#include "vivid-vid-out.h"
static int vid_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);
const struct vivid_fmt *vfmt = dev->fmt_out;
unsigned planes = vfmt->buffers;
unsigned h = dev->fmt_out_rect.height;
unsigned size = dev->bytesperline_out[0] * h;
unsigned p;
for (p = vfmt->buffers; p < vfmt->planes; p++)
size += dev->bytesperline_out[p] * h / vfmt->vdownsampling[p];
if (dev->field_out == V4L2_FIELD_ALTERNATE) {
/*
* You cannot use write() with FIELD_ALTERNATE since the field
* information (TOP/BOTTOM) cannot be passed to the kernel.
*/
if (vb2_fileio_is_active(vq))
return -EINVAL;
}
if (dev->queue_setup_error) {
/*
* Error injection: test what happens if queue_setup() returns
* an error.
*/
dev->queue_setup_error = false;
return -EINVAL;
}
if (fmt) {
const struct v4l2_pix_format_mplane *mp;
struct v4l2_format mp_fmt;
if (!V4L2_TYPE_IS_MULTIPLANAR(fmt->type)) {
fmt_sp2mp(fmt, &mp_fmt);
fmt = &mp_fmt;
}
mp = &fmt->fmt.pix_mp;
/*
* Check if the number of planes in the specified format match
* the number of planes in the current format. You can't mix that.
*/
if (mp->num_planes != planes)
return -EINVAL;
sizes[0] = mp->plane_fmt[0].sizeimage;
if (sizes[0] < size)
return -EINVAL;
for (p = 1; p < planes; p++) {
sizes[p] = mp->plane_fmt[p].sizeimage;
if (sizes[p] < dev->bytesperline_out[p] * h)
return -EINVAL;
}
} else {
for (p = 0; p < planes; p++)
sizes[p] = p ? dev->bytesperline_out[p] * h : size;
}
if (vq->num_buffers + *nbuffers < 2)
*nbuffers = 2 - vq->num_buffers;
*nplanes = planes;
/*
* videobuf2-vmalloc allocator is context-less so no need to set
* alloc_ctxs array.
*/
dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
for (p = 0; p < planes; p++)
dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
return 0;
}
static int vid_out_buf_prepare(struct vb2_buffer *vb)
{
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
unsigned long size;
unsigned planes;
unsigned p;
dprintk(dev, 1, "%s\n", __func__);
if (WARN_ON(NULL == dev->fmt_out))
return -EINVAL;
planes = dev->fmt_out->planes;
if (dev->buf_prepare_error) {
/*
* Error injection: test what happens if buf_prepare() returns
* an error.
*/
dev->buf_prepare_error = false;
return -EINVAL;
}
if (dev->field_out != V4L2_FIELD_ALTERNATE)
vb->v4l2_buf.field = dev->field_out;
else if (vb->v4l2_buf.field != V4L2_FIELD_TOP &&
vb->v4l2_buf.field != V4L2_FIELD_BOTTOM)
return -EINVAL;
for (p = 0; p < planes; p++) {
size = dev->bytesperline_out[p] * dev->fmt_out_rect.height +
vb->v4l2_planes[p].data_offset;
if (vb2_get_plane_payload(vb, p) < size) {
dprintk(dev, 1, "%s the payload is too small for plane %u (%lu < %lu)\n",
__func__, p, vb2_get_plane_payload(vb, p), size);
return -EINVAL;
}
}
return 0;
}
static void vid_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->vid_out_active);
spin_unlock(&dev->slock);
}
static int vid_out_start_streaming(struct vb2_queue *vq, unsigned count)
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
int err;
if (vb2_is_streaming(&dev->vb_vid_cap_q))
dev->can_loop_video = vivid_vid_can_loop(dev);
if (dev->kthread_vid_out)
return 0;
dev->vid_out_seq_count = 0;
dprintk(dev, 1, "%s\n", __func__);
if (dev->start_streaming_error) {
dev->start_streaming_error = false;
err = -EINVAL;
} else {
err = vivid_start_generating_vid_out(dev, &dev->vid_out_streaming);
}
if (err) {
struct vivid_buffer *buf, *tmp;
list_for_each_entry_safe(buf, tmp, &dev->vid_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 vid_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->vid_out_streaming);
dev->can_loop_video = false;
}
const struct vb2_ops vivid_vid_out_qops = {
.queue_setup = vid_out_queue_setup,
.buf_prepare = vid_out_buf_prepare,
.buf_queue = vid_out_buf_queue,
.start_streaming = vid_out_start_streaming,
.stop_streaming = vid_out_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
/*
* Called whenever the format has to be reset which can occur when
* changing outputs, standard, timings, etc.
*/
void vivid_update_format_out(struct vivid_dev *dev)
{
struct v4l2_bt_timings *bt = &dev->dv_timings_out.bt;
unsigned size, p;
switch (dev->output_type[dev->output]) {
case SVID:
default:
dev->field_out = dev->tv_field_out;
dev->sink_rect.width = 720;
if (dev->std_out & V4L2_STD_525_60) {
dev->sink_rect.height = 480;
dev->timeperframe_vid_out = (struct v4l2_fract) { 1001, 30000 };
dev->service_set_out = V4L2_SLICED_CAPTION_525;
} else {
dev->sink_rect.height = 576;
dev->timeperframe_vid_out = (struct v4l2_fract) { 1000, 25000 };
dev->service_set_out = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
}
dev->colorspace_out = V4L2_COLORSPACE_SMPTE170M;
break;
case HDMI:
dev->sink_rect.width = bt->width;
dev->sink_rect.height = bt->height;
size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
dev->timeperframe_vid_out = (struct v4l2_fract) {
size / 100, (u32)bt->pixelclock / 100
};
if (bt->interlaced)
dev->field_out = V4L2_FIELD_ALTERNATE;
else
dev->field_out = V4L2_FIELD_NONE;
if (!dev->dvi_d_out && (bt->flags & V4L2_DV_FL_IS_CE_VIDEO)) {
if (bt->width == 720 && bt->height <= 576)
dev->colorspace_out = V4L2_COLORSPACE_SMPTE170M;
else
dev->colorspace_out = V4L2_COLORSPACE_REC709;
} else {
dev->colorspace_out = V4L2_COLORSPACE_SRGB;
}
break;
}
dev->ycbcr_enc_out = V4L2_YCBCR_ENC_DEFAULT;
dev->quantization_out = V4L2_QUANTIZATION_DEFAULT;
dev->compose_out = dev->sink_rect;
dev->compose_bounds_out = dev->sink_rect;
dev->crop_out = dev->compose_out;
if (V4L2_FIELD_HAS_T_OR_B(dev->field_out))
dev->crop_out.height /= 2;
dev->fmt_out_rect = dev->crop_out;
for (p = 0; p < dev->fmt_out->planes; p++)
dev->bytesperline_out[p] =
(dev->sink_rect.width * dev->fmt_out->bit_depth[p]) / 8;
}
/* Map the field to something that is valid for the current output */
static enum v4l2_field vivid_field_out(struct vivid_dev *dev, enum v4l2_field field)
{
if (vivid_is_svid_out(dev)) {
switch (field) {
case V4L2_FIELD_INTERLACED_TB:
case V4L2_FIELD_INTERLACED_BT:
case V4L2_FIELD_SEQ_TB:
case V4L2_FIELD_SEQ_BT:
case V4L2_FIELD_ALTERNATE:
return field;
case V4L2_FIELD_INTERLACED:
default:
return V4L2_FIELD_INTERLACED;
}
}
if (vivid_is_hdmi_out(dev))
return dev->dv_timings_out.bt.interlaced ? V4L2_FIELD_ALTERNATE :
V4L2_FIELD_NONE;
return V4L2_FIELD_NONE;
}
static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
{
if (vivid_is_svid_out(dev))
return (dev->std_out & V4L2_STD_525_60) ?
TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
if (vivid_is_hdmi_out(dev) &&
dev->sink_rect.width == 720 && dev->sink_rect.height <= 576)
return dev->sink_rect.height == 480 ?
TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
return TPG_PIXEL_ASPECT_SQUARE;
}
int vivid_g_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
const struct vivid_fmt *fmt = dev->fmt_out;
unsigned p;
mp->width = dev->fmt_out_rect.width;
mp->height = dev->fmt_out_rect.height;
mp->field = dev->field_out;
mp->pixelformat = fmt->fourcc;
mp->colorspace = dev->colorspace_out;
mp->ycbcr_enc = dev->ycbcr_enc_out;
mp->quantization = dev->quantization_out;
mp->num_planes = fmt->buffers;
for (p = 0; p < mp->num_planes; p++) {
mp->plane_fmt[p].bytesperline = dev->bytesperline_out[p];
mp->plane_fmt[p].sizeimage =
mp->plane_fmt[p].bytesperline * mp->height;
}
for (p = fmt->buffers; p < fmt->planes; p++) {
unsigned stride = dev->bytesperline_out[p];
mp->plane_fmt[0].sizeimage +=
(stride * mp->height) / fmt->vdownsampling[p];
}
return 0;
}
int vivid_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_bt_timings *bt = &dev->dv_timings_out.bt;
struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
const struct vivid_fmt *fmt;
unsigned bytesperline, max_bpl;
unsigned factor = 1;
unsigned w, h;
unsigned p;
fmt = vivid_get_format(dev, mp->pixelformat);
if (!fmt) {
dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
mp->pixelformat);
mp->pixelformat = V4L2_PIX_FMT_YUYV;
fmt = vivid_get_format(dev, mp->pixelformat);
}
mp->field = vivid_field_out(dev, mp->field);
if (vivid_is_svid_out(dev)) {
w = 720;
h = (dev->std_out & V4L2_STD_525_60) ? 480 : 576;
} else {
w = dev->sink_rect.width;
h = dev->sink_rect.height;
}
if (V4L2_FIELD_HAS_T_OR_B(mp->field))
factor = 2;
if (!dev->has_scaler_out && !dev->has_crop_out && !dev->has_compose_out) {
mp->width = w;
mp->height = h / factor;
} else {
struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
rect_set_min_size(&r, &vivid_min_rect);
rect_set_max_size(&r, &vivid_max_rect);
if (dev->has_scaler_out && !dev->has_crop_out) {
struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
rect_set_max_size(&r, &max_r);
} else if (!dev->has_scaler_out && dev->has_compose_out && !dev->has_crop_out) {
rect_set_max_size(&r, &dev->sink_rect);
} else if (!dev->has_scaler_out && !dev->has_compose_out) {
rect_set_min_size(&r, &dev->sink_rect);
}
mp->width = r.width;
mp->height = r.height / factor;
}
/* This driver supports custom bytesperline values */
/* Calculate the minimum supported bytesperline value */
bytesperline = (mp->width * fmt->bit_depth[0]) >> 3;
/* Calculate the maximum supported bytesperline value */
max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[0]) >> 3;
mp->num_planes = fmt->buffers;
for (p = 0; p < mp->num_planes; p++) {
if (pfmt[p].bytesperline > max_bpl)
pfmt[p].bytesperline = max_bpl;
if (pfmt[p].bytesperline < bytesperline)
pfmt[p].bytesperline = bytesperline;
pfmt[p].sizeimage = pfmt[p].bytesperline * mp->height;
memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
}
for (p = fmt->buffers; p < fmt->planes; p++)
pfmt[0].sizeimage += (pfmt[0].bytesperline * fmt->bit_depth[p]) /
(fmt->bit_depth[0] * fmt->vdownsampling[p]);
mp->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
mp->quantization = V4L2_QUANTIZATION_DEFAULT;
if (vivid_is_svid_out(dev)) {
mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
} else if (dev->dvi_d_out || !(bt->flags & V4L2_DV_FL_IS_CE_VIDEO)) {
mp->colorspace = V4L2_COLORSPACE_SRGB;
if (dev->dvi_d_out)
mp->quantization = V4L2_QUANTIZATION_LIM_RANGE;
} else if (bt->width == 720 && bt->height <= 576) {
mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
} else if (mp->colorspace != V4L2_COLORSPACE_SMPTE170M &&
mp->colorspace != V4L2_COLORSPACE_REC709 &&
mp->colorspace != V4L2_COLORSPACE_ADOBERGB &&
mp->colorspace != V4L2_COLORSPACE_BT2020 &&
mp->colorspace != V4L2_COLORSPACE_SRGB) {
mp->colorspace = V4L2_COLORSPACE_REC709;
}
memset(mp->reserved, 0, sizeof(mp->reserved));
return 0;
}
int vivid_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_rect *crop = &dev->crop_out;
struct v4l2_rect *compose = &dev->compose_out;
struct vb2_queue *q = &dev->vb_vid_out_q;
int ret = vivid_try_fmt_vid_out(file, priv, f);
unsigned factor = 1;
unsigned p;
if (ret < 0)
return ret;
if (vb2_is_busy(q) &&
(vivid_is_svid_out(dev) ||
mp->width != dev->fmt_out_rect.width ||
mp->height != dev->fmt_out_rect.height ||
mp->pixelformat != dev->fmt_out->fourcc ||
mp->field != dev->field_out)) {
dprintk(dev, 1, "%s device busy\n", __func__);
return -EBUSY;
}
/*
* Allow for changing the colorspace on the fly. Useful for testing
* purposes, and it is something that HDMI transmitters are able
* to do.
*/
if (vb2_is_busy(q))
goto set_colorspace;
dev->fmt_out = vivid_get_format(dev, mp->pixelformat);
if (V4L2_FIELD_HAS_T_OR_B(mp->field))
factor = 2;
if (dev->has_scaler_out || dev->has_crop_out || dev->has_compose_out) {
struct v4l2_rect r = { 0, 0, mp->width, mp->height };
if (dev->has_scaler_out) {
if (dev->has_crop_out)
rect_map_inside(crop, &r);
else
*crop = r;
if (dev->has_compose_out && !dev->has_crop_out) {
struct v4l2_rect min_r = {
0, 0,
r.width / MAX_ZOOM,
factor * r.height / MAX_ZOOM
};
struct v4l2_rect max_r = {
0, 0,
r.width * MAX_ZOOM,
factor * r.height * MAX_ZOOM
};
rect_set_min_size(compose, &min_r);
rect_set_max_size(compose, &max_r);
rect_map_inside(compose, &dev->compose_bounds_out);
} else if (dev->has_compose_out) {
struct v4l2_rect min_r = {
0, 0,
crop->width / MAX_ZOOM,
factor * crop->height / MAX_ZOOM
};
struct v4l2_rect max_r = {
0, 0,
crop->width * MAX_ZOOM,
factor * crop->height * MAX_ZOOM
};
rect_set_min_size(compose, &min_r);
rect_set_max_size(compose, &max_r);
rect_map_inside(compose, &dev->compose_bounds_out);
}
} else if (dev->has_compose_out && !dev->has_crop_out) {
rect_set_size_to(crop, &r);
r.height *= factor;
rect_set_size_to(compose, &r);
rect_map_inside(compose, &dev->compose_bounds_out);
} else if (!dev->has_compose_out) {
rect_map_inside(crop, &r);
r.height /= factor;
rect_set_size_to(compose, &r);
} else {
r.height *= factor;
rect_set_max_size(compose, &r);
rect_map_inside(compose, &dev->compose_bounds_out);
crop->top *= factor;
crop->height *= factor;
rect_set_size_to(crop, compose);
rect_map_inside(crop, &r);
crop->top /= factor;
crop->height /= factor;
}
} else {
struct v4l2_rect r = { 0, 0, mp->width, mp->height };
rect_set_size_to(crop, &r);
r.height /= factor;
rect_set_size_to(compose, &r);
}
dev->fmt_out_rect.width = mp->width;
dev->fmt_out_rect.height = mp->height;
for (p = 0; p < mp->num_planes; p++)
dev->bytesperline_out[p] = mp->plane_fmt[p].bytesperline;
for (p = dev->fmt_out->buffers; p < dev->fmt_out->planes; p++)
dev->bytesperline_out[p] =
(dev->bytesperline_out[0] * dev->fmt_out->bit_depth[p]) /
dev->fmt_out->bit_depth[0];
dev->field_out = mp->field;
if (vivid_is_svid_out(dev))
dev->tv_field_out = mp->field;
set_colorspace:
dev->colorspace_out = mp->colorspace;
dev->ycbcr_enc_out = mp->ycbcr_enc;
dev->quantization_out = mp->quantization;
if (dev->loop_video) {
vivid_send_source_change(dev, SVID);
vivid_send_source_change(dev, HDMI);
}
return 0;
}
int vidioc_g_fmt_vid_out_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (!dev->multiplanar)
return -ENOTTY;
return vivid_g_fmt_vid_out(file, priv, f);
}
int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (!dev->multiplanar)
return -ENOTTY;
return vivid_try_fmt_vid_out(file, priv, f);
}
int vidioc_s_fmt_vid_out_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (!dev->multiplanar)
return -ENOTTY;
return vivid_s_fmt_vid_out(file, priv, f);
}
int vidioc_g_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (dev->multiplanar)
return -ENOTTY;
return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_out);
}
int vidioc_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (dev->multiplanar)
return -ENOTTY;
return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_out);
}
int vidioc_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
if (dev->multiplanar)
return -ENOTTY;
return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_out);
}
int vivid_vid_out_g_selection(struct file *file, void *priv,
struct v4l2_selection *sel)
{
struct vivid_dev *dev = video_drvdata(file);
if (!dev->has_crop_out && !dev->has_compose_out)
return -ENOTTY;
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
sel->r.left = sel->r.top = 0;
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
if (!dev->has_crop_out)
return -EINVAL;
sel->r = dev->crop_out;
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
if (!dev->has_crop_out)
return -EINVAL;
sel->r = dev->fmt_out_rect;
break;
case V4L2_SEL_TGT_CROP_BOUNDS:
if (!dev->has_crop_out)
return -EINVAL;
sel->r = vivid_max_rect;
break;
case V4L2_SEL_TGT_COMPOSE:
if (!dev->has_compose_out)
return -EINVAL;
sel->r = dev->compose_out;
break;
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
if (!dev->has_compose_out)
return -EINVAL;
sel->r = dev->sink_rect;
break;
default:
return -EINVAL;
}
return 0;
}
int vivid_vid_out_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_rect *crop = &dev->crop_out;
struct v4l2_rect *compose = &dev->compose_out;
unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_out) ? 2 : 1;
int ret;
if (!dev->has_crop_out && !dev->has_compose_out)
return -ENOTTY;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
switch (s->target) {
case V4L2_SEL_TGT_CROP:
if (!dev->has_crop_out)
return -EINVAL;
ret = vivid_vid_adjust_sel(s->flags, &s->r);
if (ret)
return ret;
rect_set_min_size(&s->r, &vivid_min_rect);
rect_set_max_size(&s->r, &dev->fmt_out_rect);
if (dev->has_scaler_out) {
struct v4l2_rect max_rect = {
0, 0,
dev->sink_rect.width * MAX_ZOOM,
(dev->sink_rect.height / factor) * MAX_ZOOM
};
rect_set_max_size(&s->r, &max_rect);
if (dev->has_compose_out) {
struct v4l2_rect min_rect = {
0, 0,
s->r.width / MAX_ZOOM,
(s->r.height * factor) / MAX_ZOOM
};
struct v4l2_rect max_rect = {
0, 0,
s->r.width * MAX_ZOOM,
(s->r.height * factor) * MAX_ZOOM
};
rect_set_min_size(compose, &min_rect);
rect_set_max_size(compose, &max_rect);
rect_map_inside(compose, &dev->compose_bounds_out);
}
} else if (dev->has_compose_out) {
s->r.top *= factor;
s->r.height *= factor;
rect_set_max_size(&s->r, &dev->sink_rect);
rect_set_size_to(compose, &s->r);
rect_map_inside(compose, &dev->compose_bounds_out);
s->r.top /= factor;
s->r.height /= factor;
} else {
rect_set_size_to(&s->r, &dev->sink_rect);
s->r.height /= factor;
}
rect_map_inside(&s->r, &dev->fmt_out_rect);
*crop = s->r;
break;
case V4L2_SEL_TGT_COMPOSE:
if (!dev->has_compose_out)
return -EINVAL;
ret = vivid_vid_adjust_sel(s->flags, &s->r);
if (ret)
return ret;
rect_set_min_size(&s->r, &vivid_min_rect);
rect_set_max_size(&s->r, &dev->sink_rect);
rect_map_inside(&s->r, &dev->compose_bounds_out);
s->r.top /= factor;
s->r.height /= factor;
if (dev->has_scaler_out) {
struct v4l2_rect fmt = dev->fmt_out_rect;
struct v4l2_rect max_rect = {
0, 0,
s->r.width * MAX_ZOOM,
s->r.height * MAX_ZOOM
};
struct v4l2_rect min_rect = {
0, 0,
s->r.width / MAX_ZOOM,
s->r.height / MAX_ZOOM
};
rect_set_min_size(&fmt, &min_rect);
if (!dev->has_crop_out)
rect_set_max_size(&fmt, &max_rect);
if (!rect_same_size(&dev->fmt_out_rect, &fmt) &&
vb2_is_busy(&dev->vb_vid_out_q))
return -EBUSY;
if (dev->has_crop_out) {
rect_set_min_size(crop, &min_rect);
rect_set_max_size(crop, &max_rect);
}
dev->fmt_out_rect = fmt;
} else if (dev->has_crop_out) {
struct v4l2_rect fmt = dev->fmt_out_rect;
rect_set_min_size(&fmt, &s->r);
if (!rect_same_size(&dev->fmt_out_rect, &fmt) &&
vb2_is_busy(&dev->vb_vid_out_q))
return -EBUSY;
dev->fmt_out_rect = fmt;
rect_set_size_to(crop, &s->r);
rect_map_inside(crop, &dev->fmt_out_rect);
} else {
if (!rect_same_size(&s->r, &dev->fmt_out_rect) &&
vb2_is_busy(&dev->vb_vid_out_q))
return -EBUSY;
rect_set_size_to(&dev->fmt_out_rect, &s->r);
rect_set_size_to(crop, &s->r);
crop->height /= factor;
rect_map_inside(crop, &dev->fmt_out_rect);
}
s->r.top *= factor;
s->r.height *= factor;
if (dev->bitmap_out && (compose->width != s->r.width ||
compose->height != s->r.height)) {
kfree(dev->bitmap_out);
dev->bitmap_out = NULL;
}
*compose = s->r;
break;
default:
return -EINVAL;
}
return 0;
}
int vivid_vid_out_cropcap(struct file *file, void *priv,
struct v4l2_cropcap *cap)
{
struct vivid_dev *dev = video_drvdata(file);
if (cap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
switch (vivid_get_pixel_aspect(dev)) {
case TPG_PIXEL_ASPECT_NTSC:
cap->pixelaspect.numerator = 11;
cap->pixelaspect.denominator = 10;
break;
case TPG_PIXEL_ASPECT_PAL:
cap->pixelaspect.numerator = 54;
cap->pixelaspect.denominator = 59;
break;
case TPG_PIXEL_ASPECT_SQUARE:
cap->pixelaspect.numerator = 1;
cap->pixelaspect.denominator = 1;
break;
}
return 0;
}
int vidioc_g_fmt_vid_out_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
const struct v4l2_rect *compose = &dev->compose_out;
struct v4l2_window *win = &f->fmt.win;
unsigned clipcount = win->clipcount;
if (!dev->has_fb)
return -EINVAL;
win->w.top = dev->overlay_out_top;
win->w.left = dev->overlay_out_left;
win->w.width = compose->width;
win->w.height = compose->height;
win->clipcount = dev->clipcount_out;
win->field = V4L2_FIELD_ANY;
win->chromakey = dev->chromakey_out;
win->global_alpha = dev->global_alpha_out;
if (clipcount > dev->clipcount_out)
clipcount = dev->clipcount_out;
if (dev->bitmap_out == NULL)
win->bitmap = NULL;
else if (win->bitmap) {
if (copy_to_user(win->bitmap, dev->bitmap_out,
((dev->compose_out.width + 7) / 8) * dev->compose_out.height))
return -EFAULT;
}
if (clipcount && win->clips) {
if (copy_to_user(win->clips, dev->clips_out,
clipcount * sizeof(dev->clips_out[0])))
return -EFAULT;
}
return 0;
}
int vidioc_try_fmt_vid_out_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
const struct v4l2_rect *compose = &dev->compose_out;
struct v4l2_window *win = &f->fmt.win;
int i, j;
if (!dev->has_fb)
return -EINVAL;
win->w.left = clamp_t(int, win->w.left,
-dev->display_width, dev->display_width);
win->w.top = clamp_t(int, win->w.top,
-dev->display_height, dev->display_height);
win->w.width = compose->width;
win->w.height = compose->height;
/*
* It makes no sense for an OSD to overlay only top or bottom fields,
* so always set this to ANY.
*/
win->field = V4L2_FIELD_ANY;
if (win->clipcount && !win->clips)
win->clipcount = 0;
if (win->clipcount > MAX_CLIPS)
win->clipcount = MAX_CLIPS;
if (win->clipcount) {
if (copy_from_user(dev->try_clips_out, win->clips,
win->clipcount * sizeof(dev->clips_out[0])))
return -EFAULT;
for (i = 0; i < win->clipcount; i++) {
struct v4l2_rect *r = &dev->try_clips_out[i].c;
r->top = clamp_t(s32, r->top, 0, dev->display_height - 1);
r->height = clamp_t(s32, r->height, 1, dev->display_height - r->top);
r->left = clamp_t(u32, r->left, 0, dev->display_width - 1);
r->width = clamp_t(u32, r->width, 1, dev->display_width - r->left);
}
/*
* Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
* number and it's typically a one-time deal.
*/
for (i = 0; i < win->clipcount - 1; i++) {
struct v4l2_rect *r1 = &dev->try_clips_out[i].c;
for (j = i + 1; j < win->clipcount; j++) {
struct v4l2_rect *r2 = &dev->try_clips_out[j].c;
if (rect_overlap(r1, r2))
return -EINVAL;
}
}
if (copy_to_user(win->clips, dev->try_clips_out,
win->clipcount * sizeof(dev->clips_out[0])))
return -EFAULT;
}
return 0;
}
int vidioc_s_fmt_vid_out_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
const struct v4l2_rect *compose = &dev->compose_out;
struct v4l2_window *win = &f->fmt.win;
int ret = vidioc_try_fmt_vid_out_overlay(file, priv, f);
unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
unsigned clips_size = win->clipcount * sizeof(dev->clips_out[0]);
void *new_bitmap = NULL;
if (ret)
return ret;
if (win->bitmap) {
new_bitmap = memdup_user(win->bitmap, bitmap_size);
if (IS_ERR(new_bitmap))
return PTR_ERR(new_bitmap);
}
dev->overlay_out_top = win->w.top;
dev->overlay_out_left = win->w.left;
kfree(dev->bitmap_out);
dev->bitmap_out = new_bitmap;
dev->clipcount_out = win->clipcount;
if (dev->clipcount_out)
memcpy(dev->clips_out, dev->try_clips_out, clips_size);
dev->chromakey_out = win->chromakey;
dev->global_alpha_out = win->global_alpha;
return ret;
}
int vivid_vid_out_overlay(struct file *file, void *fh, unsigned i)
{
struct vivid_dev *dev = video_drvdata(file);
if (i && !dev->fmt_out->can_do_overlay) {
dprintk(dev, 1, "unsupported output format for output overlay\n");
return -EINVAL;
}
dev->overlay_out_enabled = i;
return 0;
}
int vivid_vid_out_g_fbuf(struct file *file, void *fh,
struct v4l2_framebuffer *a)
{
struct vivid_dev *dev = video_drvdata(file);
a->capability = V4L2_FBUF_CAP_EXTERNOVERLAY |
V4L2_FBUF_CAP_BITMAP_CLIPPING |
V4L2_FBUF_CAP_LIST_CLIPPING |
V4L2_FBUF_CAP_CHROMAKEY |
V4L2_FBUF_CAP_SRC_CHROMAKEY |
V4L2_FBUF_CAP_GLOBAL_ALPHA |
V4L2_FBUF_CAP_LOCAL_ALPHA |
V4L2_FBUF_CAP_LOCAL_INV_ALPHA;
a->flags = V4L2_FBUF_FLAG_OVERLAY | dev->fbuf_out_flags;
a->base = (void *)dev->video_pbase;
a->fmt.width = dev->display_width;
a->fmt.height = dev->display_height;
if (dev->fb_defined.green.length == 5)
a->fmt.pixelformat = V4L2_PIX_FMT_ARGB555;
else
a->fmt.pixelformat = V4L2_PIX_FMT_RGB565;
a->fmt.bytesperline = dev->display_byte_stride;
a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
a->fmt.field = V4L2_FIELD_NONE;
a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
a->fmt.priv = 0;
return 0;
}
int vivid_vid_out_s_fbuf(struct file *file, void *fh,
const struct v4l2_framebuffer *a)
{
struct vivid_dev *dev = video_drvdata(file);
const unsigned chroma_flags = V4L2_FBUF_FLAG_CHROMAKEY |
V4L2_FBUF_FLAG_SRC_CHROMAKEY;
const unsigned alpha_flags = V4L2_FBUF_FLAG_GLOBAL_ALPHA |
V4L2_FBUF_FLAG_LOCAL_ALPHA |
V4L2_FBUF_FLAG_LOCAL_INV_ALPHA;
if ((a->flags & chroma_flags) == chroma_flags)
return -EINVAL;
switch (a->flags & alpha_flags) {
case 0:
case V4L2_FBUF_FLAG_GLOBAL_ALPHA:
case V4L2_FBUF_FLAG_LOCAL_ALPHA:
case V4L2_FBUF_FLAG_LOCAL_INV_ALPHA:
break;
default:
return -EINVAL;
}
dev->fbuf_out_flags &= ~(chroma_flags | alpha_flags);
dev->fbuf_out_flags = a->flags & (chroma_flags | alpha_flags);
return 0;
}
static const struct v4l2_audioout vivid_audio_outputs[] = {
{ 0, "Line-Out 1" },
{ 1, "Line-Out 2" },
};
int vidioc_enum_output(struct file *file, void *priv,
struct v4l2_output *out)
{
struct vivid_dev *dev = video_drvdata(file);
if (out->index >= dev->num_outputs)
return -EINVAL;
out->type = V4L2_OUTPUT_TYPE_ANALOG;
switch (dev->output_type[out->index]) {
case SVID:
snprintf(out->name, sizeof(out->name), "S-Video %u",
dev->output_name_counter[out->index]);
out->std = V4L2_STD_ALL;
if (dev->has_audio_outputs)
out->audioset = (1 << ARRAY_SIZE(vivid_audio_outputs)) - 1;
out->capabilities = V4L2_OUT_CAP_STD;
break;
case HDMI:
snprintf(out->name, sizeof(out->name), "HDMI %u",
dev->output_name_counter[out->index]);
out->capabilities = V4L2_OUT_CAP_DV_TIMINGS;
break;
}
return 0;
}
int vidioc_g_output(struct file *file, void *priv, unsigned *o)
{
struct vivid_dev *dev = video_drvdata(file);
*o = dev->output;
return 0;
}
int vidioc_s_output(struct file *file, void *priv, unsigned o)
{
struct vivid_dev *dev = video_drvdata(file);
if (o >= dev->num_outputs)
return -EINVAL;
if (o == dev->output)
return 0;
if (vb2_is_busy(&dev->vb_vid_out_q) || vb2_is_busy(&dev->vb_vbi_out_q))
return -EBUSY;
dev->output = o;
dev->tv_audio_output = 0;
if (dev->output_type[o] == SVID)
dev->vid_out_dev.tvnorms = V4L2_STD_ALL;
else
dev->vid_out_dev.tvnorms = 0;
dev->vbi_out_dev.tvnorms = dev->vid_out_dev.tvnorms;
vivid_update_format_out(dev);
return 0;
}
int vidioc_enumaudout(struct file *file, void *fh, struct v4l2_audioout *vout)
{
if (vout->index >= ARRAY_SIZE(vivid_audio_outputs))
return -EINVAL;
*vout = vivid_audio_outputs[vout->index];
return 0;
}
int vidioc_g_audout(struct file *file, void *fh, struct v4l2_audioout *vout)
{
struct vivid_dev *dev = video_drvdata(file);
if (!vivid_is_svid_out(dev))
return -EINVAL;
*vout = vivid_audio_outputs[dev->tv_audio_output];
return 0;
}
int vidioc_s_audout(struct file *file, void *fh, const struct v4l2_audioout *vout)
{
struct vivid_dev *dev = video_drvdata(file);
if (!vivid_is_svid_out(dev))
return -EINVAL;
if (vout->index >= ARRAY_SIZE(vivid_audio_outputs))
return -EINVAL;
dev->tv_audio_output = vout->index;
return 0;
}
int vivid_vid_out_s_std(struct file *file, void *priv, v4l2_std_id id)
{
struct vivid_dev *dev = video_drvdata(file);
if (!vivid_is_svid_out(dev))
return -ENODATA;
if (dev->std_out == id)
return 0;
if (vb2_is_busy(&dev->vb_vid_out_q) || vb2_is_busy(&dev->vb_vbi_out_q))
return -EBUSY;
dev->std_out = id;
vivid_update_format_out(dev);
return 0;
}
int vivid_vid_out_s_dv_timings(struct file *file, void *_fh,
struct v4l2_dv_timings *timings)
{
struct vivid_dev *dev = video_drvdata(file);
if (!vivid_is_hdmi_out(dev))
return -ENODATA;
if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
0, NULL, NULL))
return -EINVAL;
if (v4l2_match_dv_timings(timings, &dev->dv_timings_out, 0))
return 0;
if (vb2_is_busy(&dev->vb_vid_out_q))
return -EBUSY;
dev->dv_timings_out = *timings;
vivid_update_format_out(dev);
return 0;
}
int vivid_vid_out_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *parm)
{
struct vivid_dev *dev = video_drvdata(file);
if (parm->type != (dev->multiplanar ?
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
V4L2_BUF_TYPE_VIDEO_OUTPUT))
return -EINVAL;
parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
parm->parm.output.timeperframe = dev->timeperframe_vid_out;
parm->parm.output.writebuffers = 1;
return 0;
}
int vidioc_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_CTRL:
return v4l2_ctrl_subscribe_event(fh, sub);
case V4L2_EVENT_SOURCE_CHANGE:
if (fh->vdev->vfl_dir == VFL_DIR_RX)
return v4l2_src_change_event_subscribe(fh, sub);
break;
default:
break;
}
return -EINVAL;
}