diff options
Diffstat (limited to 'drivers/media/platform/vivid/vivid-vid-common.c')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-vid-common.c | 571 |
1 files changed, 571 insertions, 0 deletions
diff --git a/drivers/media/platform/vivid/vivid-vid-common.c b/drivers/media/platform/vivid/vivid-vid-common.c new file mode 100644 index 000000000000..16cd6d2d2ed6 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vid-common.c @@ -0,0 +1,571 @@ +/* + * vivid-vid-common.c - common video 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" + +const struct v4l2_dv_timings_cap vivid_dv_timings_cap = { + .type = V4L2_DV_BT_656_1120, + /* keep this initialization for compatibility with GCC < 4.4.6 */ + .reserved = { 0 }, + V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 25000000, 600000000, + V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT, + V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED) +}; + +/* ------------------------------------------------------------------ + Basic structures + ------------------------------------------------------------------*/ + +struct vivid_fmt vivid_formats[] = { + { + .name = "4:2:2, packed, YUYV", + .fourcc = V4L2_PIX_FMT_YUYV, + .depth = 16, + .is_yuv = true, + .planes = 1, + .data_offset = { PLANE0_DATA_OFFSET, 0 }, + }, + { + .name = "4:2:2, packed, UYVY", + .fourcc = V4L2_PIX_FMT_UYVY, + .depth = 16, + .is_yuv = true, + .planes = 1, + }, + { + .name = "4:2:2, packed, YVYU", + .fourcc = V4L2_PIX_FMT_YVYU, + .depth = 16, + .is_yuv = true, + .planes = 1, + }, + { + .name = "4:2:2, packed, VYUY", + .fourcc = V4L2_PIX_FMT_VYUY, + .depth = 16, + .is_yuv = true, + .planes = 1, + }, + { + .name = "RGB565 (LE)", + .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + }, + { + .name = "RGB565 (BE)", + .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + }, + { + .name = "RGB555 (LE)", + .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + }, + { + .name = "XRGB555 (LE)", + .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + }, + { + .name = "ARGB555 (LE)", + .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + .alpha_mask = 0x8000, + }, + { + .name = "RGB555 (BE)", + .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */ + .depth = 16, + .planes = 1, + .can_do_overlay = true, + }, + { + .name = "RGB24 (LE)", + .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */ + .depth = 24, + .planes = 1, + }, + { + .name = "RGB24 (BE)", + .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */ + .depth = 24, + .planes = 1, + }, + { + .name = "RGB32 (LE)", + .fourcc = V4L2_PIX_FMT_RGB32, /* argb */ + .depth = 32, + .planes = 1, + }, + { + .name = "RGB32 (BE)", + .fourcc = V4L2_PIX_FMT_BGR32, /* bgra */ + .depth = 32, + .planes = 1, + }, + { + .name = "XRGB32 (LE)", + .fourcc = V4L2_PIX_FMT_XRGB32, /* argb */ + .depth = 32, + .planes = 1, + }, + { + .name = "XRGB32 (BE)", + .fourcc = V4L2_PIX_FMT_XBGR32, /* bgra */ + .depth = 32, + .planes = 1, + }, + { + .name = "ARGB32 (LE)", + .fourcc = V4L2_PIX_FMT_ARGB32, /* argb */ + .depth = 32, + .planes = 1, + .alpha_mask = 0x000000ff, + }, + { + .name = "ARGB32 (BE)", + .fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */ + .depth = 32, + .planes = 1, + .alpha_mask = 0xff000000, + }, + { + .name = "4:2:2, planar, YUV", + .fourcc = V4L2_PIX_FMT_NV16M, + .depth = 8, + .is_yuv = true, + .planes = 2, + .data_offset = { PLANE0_DATA_OFFSET, 0 }, + }, + { + .name = "4:2:2, planar, YVU", + .fourcc = V4L2_PIX_FMT_NV61M, + .depth = 8, + .is_yuv = true, + .planes = 2, + .data_offset = { 0, PLANE0_DATA_OFFSET }, + }, +}; + +/* There are 2 multiplanar formats in the list */ +#define VIVID_MPLANAR_FORMATS 2 + +const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat) +{ + const struct vivid_fmt *fmt; + unsigned k; + + for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) { + fmt = &vivid_formats[k]; + if (fmt->fourcc == pixelformat) + if (fmt->planes == 1 || dev->multiplanar) + return fmt; + } + + return NULL; +} + +bool vivid_vid_can_loop(struct vivid_dev *dev) +{ + if (dev->src_rect.width != dev->sink_rect.width || + dev->src_rect.height != dev->sink_rect.height) + return false; + if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc) + return false; + if (dev->field_cap != dev->field_out) + return false; + if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) { + if (!(dev->std_cap & V4L2_STD_525_60) != + !(dev->std_out & V4L2_STD_525_60)) + return false; + return true; + } + if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev)) + return true; + return false; +} + +void vivid_send_source_change(struct vivid_dev *dev, unsigned type) +{ + struct v4l2_event ev = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + unsigned i; + + for (i = 0; i < dev->num_inputs; i++) { + ev.id = i; + if (dev->input_type[i] == type) { + if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap) + v4l2_event_queue(&dev->vid_cap_dev, &ev); + if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap) + v4l2_event_queue(&dev->vbi_cap_dev, &ev); + } + } +} + +/* + * Conversion function that converts a single-planar format to a + * single-plane multiplanar format. + */ +void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt) +{ + struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp; + struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0]; + const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix; + bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT; + + memset(mp->reserved, 0, sizeof(mp->reserved)); + mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : + V4L2_CAP_VIDEO_CAPTURE_MPLANE; + mp->width = pix->width; + mp->height = pix->height; + mp->pixelformat = pix->pixelformat; + mp->field = pix->field; + mp->colorspace = pix->colorspace; + mp->num_planes = 1; + mp->flags = pix->flags; + ppix->sizeimage = pix->sizeimage; + ppix->bytesperline = pix->bytesperline; + memset(ppix->reserved, 0, sizeof(ppix->reserved)); +} + +int fmt_sp2mp_func(struct file *file, void *priv, + struct v4l2_format *f, fmtfunc func) +{ + struct v4l2_format fmt; + struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp; + struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0]; + struct v4l2_pix_format *pix = &f->fmt.pix; + int ret; + + /* Converts to a mplane format */ + fmt_sp2mp(f, &fmt); + /* Passes it to the generic mplane format function */ + ret = func(file, priv, &fmt); + /* Copies back the mplane data to the single plane format */ + pix->width = mp->width; + pix->height = mp->height; + pix->pixelformat = mp->pixelformat; + pix->field = mp->field; + pix->colorspace = mp->colorspace; + pix->sizeimage = ppix->sizeimage; + pix->bytesperline = ppix->bytesperline; + pix->flags = mp->flags; + return ret; +} + +/* v4l2_rect helper function: copy the width/height values */ +void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size) +{ + r->width = size->width; + r->height = size->height; +} + +/* v4l2_rect helper function: width and height of r should be >= min_size */ +void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size) +{ + if (r->width < min_size->width) + r->width = min_size->width; + if (r->height < min_size->height) + r->height = min_size->height; +} + +/* v4l2_rect helper function: width and height of r should be <= max_size */ +void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size) +{ + if (r->width > max_size->width) + r->width = max_size->width; + if (r->height > max_size->height) + r->height = max_size->height; +} + +/* v4l2_rect helper function: r should be inside boundary */ +void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary) +{ + rect_set_max_size(r, boundary); + if (r->left < boundary->left) + r->left = boundary->left; + if (r->top < boundary->top) + r->top = boundary->top; + if (r->left + r->width > boundary->width) + r->left = boundary->width - r->width; + if (r->top + r->height > boundary->height) + r->top = boundary->height - r->height; +} + +/* v4l2_rect helper function: return true if r1 has the same size as r2 */ +bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2) +{ + return r1->width == r2->width && r1->height == r2->height; +} + +/* v4l2_rect helper function: calculate the intersection of two rects */ +struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b) +{ + struct v4l2_rect r; + int right, bottom; + + r.top = max(a->top, b->top); + r.left = max(a->left, b->left); + bottom = min(a->top + a->height, b->top + b->height); + right = min(a->left + a->width, b->left + b->width); + r.height = max(0, bottom - r.top); + r.width = max(0, right - r.left); + return r; +} + +/* + * v4l2_rect helper function: scale rect r by to->width / from->width and + * to->height / from->height. + */ +void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from, + const struct v4l2_rect *to) +{ + if (from->width == 0 || from->height == 0) { + r->left = r->top = r->width = r->height = 0; + return; + } + r->left = (((r->left - from->left) * to->width) / from->width) & ~1; + r->width = ((r->width * to->width) / from->width) & ~1; + r->top = ((r->top - from->top) * to->height) / from->height; + r->height = (r->height * to->height) / from->height; +} + +bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2) +{ + /* + * IF the left side of r1 is to the right of the right side of r2 OR + * the left side of r2 is to the right of the right side of r1 THEN + * they do not overlap. + */ + if (r1->left >= r2->left + r2->width || + r2->left >= r1->left + r1->width) + return false; + /* + * IF the top side of r1 is below the bottom of r2 OR + * the top side of r2 is below the bottom of r1 THEN + * they do not overlap. + */ + if (r1->top >= r2->top + r2->height || + r2->top >= r1->top + r1->height) + return false; + return true; +} +int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r) +{ + unsigned w = r->width; + unsigned h = r->height; + + if (!(flags & V4L2_SEL_FLAG_LE)) { + w++; + h++; + if (w < 2) + w = 2; + if (h < 2) + h = 2; + } + if (!(flags & V4L2_SEL_FLAG_GE)) { + if (w > MAX_WIDTH) + w = MAX_WIDTH; + if (h > MAX_HEIGHT) + h = MAX_HEIGHT; + } + w = w & ~1; + h = h & ~1; + if (w < 2 || h < 2) + return -ERANGE; + if (w > MAX_WIDTH || h > MAX_HEIGHT) + return -ERANGE; + if (r->top < 0) + r->top = 0; + if (r->left < 0) + r->left = 0; + r->left &= ~1; + r->top &= ~1; + if (r->left + w > MAX_WIDTH) + r->left = MAX_WIDTH - w; + if (r->top + h > MAX_HEIGHT) + r->top = MAX_HEIGHT - h; + if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) == + (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) && + (r->width != w || r->height != h)) + return -ERANGE; + r->width = w; + r->height = h; + return 0; +} + +int vivid_enum_fmt_vid(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct vivid_dev *dev = video_drvdata(file); + const struct vivid_fmt *fmt; + + if (f->index >= ARRAY_SIZE(vivid_formats) - + (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS)) + return -EINVAL; + + fmt = &vivid_formats[f->index]; + + strlcpy(f->description, fmt->name, sizeof(f->description)); + f->pixelformat = fmt->fourcc; + return 0; +} + +int vidioc_enum_fmt_vid_mplane(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct vivid_dev *dev = video_drvdata(file); + + if (!dev->multiplanar) + return -ENOTTY; + return vivid_enum_fmt_vid(file, priv, f); +} + +int vidioc_enum_fmt_vid(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct vivid_dev *dev = video_drvdata(file); + + if (dev->multiplanar) + return -ENOTTY; + return vivid_enum_fmt_vid(file, priv, f); +} + +int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_dir == VFL_DIR_RX) { + if (!vivid_is_sdtv_cap(dev)) + return -ENODATA; + *id = dev->std_cap; + } else { + if (!vivid_is_svid_out(dev)) + return -ENODATA; + *id = dev->std_out; + } + return 0; +} + +int vidioc_g_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_dir == VFL_DIR_RX) { + if (!vivid_is_hdmi_cap(dev)) + return -ENODATA; + *timings = dev->dv_timings_cap; + } else { + if (!vivid_is_hdmi_out(dev)) + return -ENODATA; + *timings = dev->dv_timings_out; + } + return 0; +} + +int vidioc_enum_dv_timings(struct file *file, void *_fh, + struct v4l2_enum_dv_timings *timings) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_dir == VFL_DIR_RX) { + if (!vivid_is_hdmi_cap(dev)) + return -ENODATA; + } else { + if (!vivid_is_hdmi_out(dev)) + return -ENODATA; + } + return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap, + NULL, NULL); +} + +int vidioc_dv_timings_cap(struct file *file, void *_fh, + struct v4l2_dv_timings_cap *cap) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_dir == VFL_DIR_RX) { + if (!vivid_is_hdmi_cap(dev)) + return -ENODATA; + } else { + if (!vivid_is_hdmi_out(dev)) + return -ENODATA; + } + *cap = vivid_dv_timings_cap; + return 0; +} + +int vidioc_g_edid(struct file *file, void *_fh, + struct v4l2_edid *edid) +{ + struct vivid_dev *dev = video_drvdata(file); + struct video_device *vdev = video_devdata(file); + + memset(edid->reserved, 0, sizeof(edid->reserved)); + if (vdev->vfl_dir == VFL_DIR_RX) { + if (edid->pad >= dev->num_inputs) + return -EINVAL; + if (dev->input_type[edid->pad] != HDMI) + return -EINVAL; + } else { + if (edid->pad >= dev->num_outputs) + return -EINVAL; + if (dev->output_type[edid->pad] != HDMI) + return -EINVAL; + } + if (edid->start_block == 0 && edid->blocks == 0) { + edid->blocks = dev->edid_blocks; + return 0; + } + if (dev->edid_blocks == 0) + return -ENODATA; + if (edid->start_block >= dev->edid_blocks) + return -EINVAL; + if (edid->start_block + edid->blocks > dev->edid_blocks) + edid->blocks = dev->edid_blocks - edid->start_block; + memcpy(edid->edid, dev->edid, edid->blocks * 128); + return 0; +} |