--- /dev/null
+/*
+ * 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, 14000000, 775000000,
+ V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
+ V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
+ 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,
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .is_yuv = true,
+ .planes = 1,
+ .buffers = 1,
+ .data_offset = { PLANE0_DATA_OFFSET },
+ },
+ {
+ .name = "4:2:2, packed, UYVY",
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .is_yuv = true,
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "4:2:2, packed, YVYU",
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .is_yuv = true,
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "4:2:2, packed, VYUY",
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .is_yuv = true,
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV 4:2:2 triplanar",
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .vdownsampling = { 1, 1, 1 },
+ .bit_depth = { 8, 4, 4 },
+ .is_yuv = true,
+ .planes = 3,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV 4:2:0 triplanar",
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .vdownsampling = { 1, 2, 2 },
+ .bit_depth = { 8, 4, 4 },
+ .is_yuv = true,
+ .planes = 3,
+ .buffers = 1,
+ },
+ {
+ .name = "YVU 4:2:0 triplanar",
+ .fourcc = V4L2_PIX_FMT_YVU420,
+ .vdownsampling = { 1, 2, 2 },
+ .bit_depth = { 8, 4, 4 },
+ .is_yuv = true,
+ .planes = 3,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV 4:2:0 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .vdownsampling = { 1, 2 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YVU 4:2:0 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .vdownsampling = { 1, 2 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV 4:2:2 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YVU 4:2:2 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV61,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV 4:4:4 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV24,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 16 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YVU 4:4:4 biplanar",
+ .fourcc = V4L2_PIX_FMT_NV42,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 16 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV555 (LE)",
+ .fourcc = V4L2_PIX_FMT_YUV555, /* uuuvvvvv ayyyyyuu */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0x8000,
+ },
+ {
+ .name = "YUV565 (LE)",
+ .fourcc = V4L2_PIX_FMT_YUV565, /* uuuvvvvv yyyyyuuu */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "YUV444",
+ .fourcc = V4L2_PIX_FMT_YUV444, /* uuuuvvvv aaaayyyy */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0xf000,
+ },
+ {
+ .name = "YUV32 (LE)",
+ .fourcc = V4L2_PIX_FMT_YUV32, /* ayuv */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0x000000ff,
+ },
+ {
+ .name = "Monochrome",
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .is_yuv = true,
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "RGB332",
+ .fourcc = V4L2_PIX_FMT_RGB332, /* rrrgggbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "RGB565 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .can_do_overlay = true,
+ },
+ {
+ .name = "RGB565 (BE)",
+ .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .can_do_overlay = true,
+ },
+ {
+ .name = "RGB444",
+ .fourcc = V4L2_PIX_FMT_RGB444, /* xxxxrrrr ggggbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "XRGB444",
+ .fourcc = V4L2_PIX_FMT_XRGB444, /* xxxxrrrr ggggbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "ARGB444",
+ .fourcc = V4L2_PIX_FMT_ARGB444, /* aaaarrrr ggggbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0x00f0,
+ },
+ {
+ .name = "RGB555 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb xrrrrrgg */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .can_do_overlay = true,
+ },
+ {
+ .name = "XRGB555 (LE)",
+ .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb xrrrrrgg */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .can_do_overlay = true,
+ },
+ {
+ .name = "ARGB555 (LE)",
+ .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .can_do_overlay = true,
+ .alpha_mask = 0x8000,
+ },
+ {
+ .name = "RGB555 (BE)",
+ .fourcc = V4L2_PIX_FMT_RGB555X, /* xrrrrrgg gggbbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "XRGB555 (BE)",
+ .fourcc = V4L2_PIX_FMT_XRGB555X, /* xrrrrrgg gggbbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "ARGB555 (BE)",
+ .fourcc = V4L2_PIX_FMT_ARGB555X, /* arrrrrgg gggbbbbb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 16 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0x0080,
+ },
+ {
+ .name = "RGB24 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 24 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "RGB24 (BE)",
+ .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
+ .vdownsampling = { 1 },
+ .bit_depth = { 24 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "BGR666",
+ .fourcc = V4L2_PIX_FMT_BGR666, /* bbbbbbgg ggggrrrr rrxxxxxx */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "RGB32 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB32, /* xrgb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "RGB32 (BE)",
+ .fourcc = V4L2_PIX_FMT_BGR32, /* bgrx */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "XRGB32 (LE)",
+ .fourcc = V4L2_PIX_FMT_XRGB32, /* xrgb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "XRGB32 (BE)",
+ .fourcc = V4L2_PIX_FMT_XBGR32, /* bgrx */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "ARGB32 (LE)",
+ .fourcc = V4L2_PIX_FMT_ARGB32, /* argb */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0x000000ff,
+ },
+ {
+ .name = "ARGB32 (BE)",
+ .fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */
+ .vdownsampling = { 1 },
+ .bit_depth = { 32 },
+ .planes = 1,
+ .buffers = 1,
+ .alpha_mask = 0xff000000,
+ },
+ {
+ .name = "Bayer BG/GR",
+ .fourcc = V4L2_PIX_FMT_SBGGR8, /* Bayer BG/GR */
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "Bayer GB/RG",
+ .fourcc = V4L2_PIX_FMT_SGBRG8, /* Bayer GB/RG */
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "Bayer GR/BG",
+ .fourcc = V4L2_PIX_FMT_SGRBG8, /* Bayer GR/BG */
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "Bayer RG/GB",
+ .fourcc = V4L2_PIX_FMT_SRGGB8, /* Bayer RG/GB */
+ .vdownsampling = { 1 },
+ .bit_depth = { 8 },
+ .planes = 1,
+ .buffers = 1,
+ },
+ {
+ .name = "4:2:2, biplanar, YUV",
+ .fourcc = V4L2_PIX_FMT_NV16M,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 2,
+ .data_offset = { PLANE0_DATA_OFFSET, 0 },
+ },
+ {
+ .name = "4:2:2, biplanar, YVU",
+ .fourcc = V4L2_PIX_FMT_NV61M,
+ .vdownsampling = { 1, 1 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 2,
+ .data_offset = { 0, PLANE0_DATA_OFFSET },
+ },
+ {
+ .name = "4:2:0, triplanar, YUV",
+ .fourcc = V4L2_PIX_FMT_YUV420M,
+ .vdownsampling = { 1, 2, 2 },
+ .bit_depth = { 8, 4, 4 },
+ .is_yuv = true,
+ .planes = 3,
+ .buffers = 3,
+ },
+ {
+ .name = "4:2:0, triplanar, YVU",
+ .fourcc = V4L2_PIX_FMT_YVU420M,
+ .vdownsampling = { 1, 2, 2 },
+ .bit_depth = { 8, 4, 4 },
+ .is_yuv = true,
+ .planes = 3,
+ .buffers = 3,
+ },
+ {
+ .name = "4:2:0, biplanar, YUV",
+ .fourcc = V4L2_PIX_FMT_NV12M,
+ .vdownsampling = { 1, 2 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 2,
+ },
+ {
+ .name = "4:2:0, biplanar, YVU",
+ .fourcc = V4L2_PIX_FMT_NV21M,
+ .vdownsampling = { 1, 2 },
+ .bit_depth = { 8, 8 },
+ .is_yuv = true,
+ .planes = 2,
+ .buffers = 2,
+ },
+};
+
+/* There are 6 multiplanar formats in the list */
+#define VIVID_MPLANAR_FORMATS 6
+
+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->buffers == 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;
+ /*
+ * While this can be supported, it is just too much work
+ * to actually implement.
+ */
+ if (dev->field_cap == V4L2_FIELD_SEQ_TB ||
+ dev->field_cap == V4L2_FIELD_SEQ_BT)
+ 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->ycbcr_enc = pix->ycbcr_enc;
+ mp->quantization = pix->quantization;
+ 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->ycbcr_enc = mp->ycbcr_enc;
+ pix->quantization = mp->quantization;
+ 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;
+
+ /* sanitize w and h in case someone passes ~0 as the value */
+ w &= 0xffff;
+ h &= 0xffff;
+ 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;
+ /* sanitize left and top in case someone passes ~0 as the value */
+ r->left &= 0xfffe;
+ r->top &= 0xfffe;
+ 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;
+}
Code Review / kvmfornfv.git / blobdiff