571 lines
15 KiB
C
571 lines
15 KiB
C
/*
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* vivid-vid-common.c - common video support functions.
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*
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* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/videodev2.h>
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#include <linux/v4l2-dv-timings.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-dv-timings.h>
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#include "vivid-core.h"
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#include "vivid-vid-common.h"
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const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
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.type = V4L2_DV_BT_656_1120,
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/* keep this initialization for compatibility with GCC < 4.4.6 */
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.reserved = { 0 },
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V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 25000000, 600000000,
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V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
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V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
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};
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/* ------------------------------------------------------------------
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Basic structures
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------------------------------------------------------------------*/
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struct vivid_fmt vivid_formats[] = {
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{
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.name = "4:2:2, packed, YUYV",
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.fourcc = V4L2_PIX_FMT_YUYV,
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.depth = 16,
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.is_yuv = true,
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.planes = 1,
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.data_offset = { PLANE0_DATA_OFFSET, 0 },
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},
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{
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.name = "4:2:2, packed, UYVY",
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.fourcc = V4L2_PIX_FMT_UYVY,
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.depth = 16,
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.is_yuv = true,
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.planes = 1,
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},
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{
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.name = "4:2:2, packed, YVYU",
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.fourcc = V4L2_PIX_FMT_YVYU,
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.depth = 16,
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.is_yuv = true,
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.planes = 1,
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},
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{
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.name = "4:2:2, packed, VYUY",
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.fourcc = V4L2_PIX_FMT_VYUY,
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.depth = 16,
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.is_yuv = true,
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.planes = 1,
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},
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{
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.name = "RGB565 (LE)",
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.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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},
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{
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.name = "RGB565 (BE)",
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.fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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},
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{
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.name = "RGB555 (LE)",
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.fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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},
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{
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.name = "XRGB555 (LE)",
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.fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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},
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{
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.name = "ARGB555 (LE)",
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.fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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.alpha_mask = 0x8000,
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},
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{
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.name = "RGB555 (BE)",
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.fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
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.depth = 16,
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.planes = 1,
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.can_do_overlay = true,
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},
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{
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.name = "RGB24 (LE)",
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.fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
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.depth = 24,
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.planes = 1,
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},
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{
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.name = "RGB24 (BE)",
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.fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
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.depth = 24,
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.planes = 1,
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},
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{
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.name = "RGB32 (LE)",
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.fourcc = V4L2_PIX_FMT_RGB32, /* argb */
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.depth = 32,
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.planes = 1,
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},
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{
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.name = "RGB32 (BE)",
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.fourcc = V4L2_PIX_FMT_BGR32, /* bgra */
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.depth = 32,
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.planes = 1,
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},
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{
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.name = "XRGB32 (LE)",
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.fourcc = V4L2_PIX_FMT_XRGB32, /* argb */
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.depth = 32,
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.planes = 1,
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},
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{
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.name = "XRGB32 (BE)",
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.fourcc = V4L2_PIX_FMT_XBGR32, /* bgra */
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.depth = 32,
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.planes = 1,
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},
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{
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.name = "ARGB32 (LE)",
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.fourcc = V4L2_PIX_FMT_ARGB32, /* argb */
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.depth = 32,
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.planes = 1,
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.alpha_mask = 0x000000ff,
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},
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{
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.name = "ARGB32 (BE)",
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.fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */
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.depth = 32,
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.planes = 1,
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.alpha_mask = 0xff000000,
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},
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{
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.name = "4:2:2, planar, YUV",
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.fourcc = V4L2_PIX_FMT_NV16M,
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.depth = 8,
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.is_yuv = true,
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.planes = 2,
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.data_offset = { PLANE0_DATA_OFFSET, 0 },
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},
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{
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.name = "4:2:2, planar, YVU",
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.fourcc = V4L2_PIX_FMT_NV61M,
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.depth = 8,
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.is_yuv = true,
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.planes = 2,
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.data_offset = { 0, PLANE0_DATA_OFFSET },
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},
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};
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/* There are 2 multiplanar formats in the list */
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#define VIVID_MPLANAR_FORMATS 2
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const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
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{
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const struct vivid_fmt *fmt;
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unsigned k;
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for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
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fmt = &vivid_formats[k];
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if (fmt->fourcc == pixelformat)
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if (fmt->planes == 1 || dev->multiplanar)
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return fmt;
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}
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return NULL;
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}
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bool vivid_vid_can_loop(struct vivid_dev *dev)
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{
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if (dev->src_rect.width != dev->sink_rect.width ||
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dev->src_rect.height != dev->sink_rect.height)
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return false;
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if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
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return false;
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if (dev->field_cap != dev->field_out)
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return false;
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if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
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if (!(dev->std_cap & V4L2_STD_525_60) !=
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!(dev->std_out & V4L2_STD_525_60))
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return false;
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return true;
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}
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if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
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return true;
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return false;
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}
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void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
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{
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struct v4l2_event ev = {
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.type = V4L2_EVENT_SOURCE_CHANGE,
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.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
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};
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unsigned i;
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for (i = 0; i < dev->num_inputs; i++) {
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ev.id = i;
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if (dev->input_type[i] == type) {
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if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
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v4l2_event_queue(&dev->vid_cap_dev, &ev);
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if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
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v4l2_event_queue(&dev->vbi_cap_dev, &ev);
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}
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}
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}
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/*
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* Conversion function that converts a single-planar format to a
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* single-plane multiplanar format.
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*/
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void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
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{
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struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
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struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
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const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
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bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
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memset(mp->reserved, 0, sizeof(mp->reserved));
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mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
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V4L2_CAP_VIDEO_CAPTURE_MPLANE;
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mp->width = pix->width;
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mp->height = pix->height;
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mp->pixelformat = pix->pixelformat;
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mp->field = pix->field;
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mp->colorspace = pix->colorspace;
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mp->num_planes = 1;
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mp->flags = pix->flags;
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ppix->sizeimage = pix->sizeimage;
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ppix->bytesperline = pix->bytesperline;
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memset(ppix->reserved, 0, sizeof(ppix->reserved));
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}
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int fmt_sp2mp_func(struct file *file, void *priv,
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struct v4l2_format *f, fmtfunc func)
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{
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struct v4l2_format fmt;
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struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
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struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
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struct v4l2_pix_format *pix = &f->fmt.pix;
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int ret;
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/* Converts to a mplane format */
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fmt_sp2mp(f, &fmt);
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/* Passes it to the generic mplane format function */
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ret = func(file, priv, &fmt);
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/* Copies back the mplane data to the single plane format */
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pix->width = mp->width;
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pix->height = mp->height;
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pix->pixelformat = mp->pixelformat;
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pix->field = mp->field;
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pix->colorspace = mp->colorspace;
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pix->sizeimage = ppix->sizeimage;
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pix->bytesperline = ppix->bytesperline;
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pix->flags = mp->flags;
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return ret;
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}
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/* v4l2_rect helper function: copy the width/height values */
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void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
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{
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r->width = size->width;
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r->height = size->height;
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}
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/* v4l2_rect helper function: width and height of r should be >= min_size */
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void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
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{
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if (r->width < min_size->width)
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r->width = min_size->width;
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if (r->height < min_size->height)
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r->height = min_size->height;
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}
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/* v4l2_rect helper function: width and height of r should be <= max_size */
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void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
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{
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if (r->width > max_size->width)
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r->width = max_size->width;
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if (r->height > max_size->height)
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r->height = max_size->height;
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}
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/* v4l2_rect helper function: r should be inside boundary */
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void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
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{
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rect_set_max_size(r, boundary);
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if (r->left < boundary->left)
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r->left = boundary->left;
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if (r->top < boundary->top)
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r->top = boundary->top;
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if (r->left + r->width > boundary->width)
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r->left = boundary->width - r->width;
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if (r->top + r->height > boundary->height)
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r->top = boundary->height - r->height;
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}
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/* v4l2_rect helper function: return true if r1 has the same size as r2 */
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bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
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{
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return r1->width == r2->width && r1->height == r2->height;
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}
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/* v4l2_rect helper function: calculate the intersection of two rects */
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struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
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{
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struct v4l2_rect r;
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int right, bottom;
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r.top = max(a->top, b->top);
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r.left = max(a->left, b->left);
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bottom = min(a->top + a->height, b->top + b->height);
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right = min(a->left + a->width, b->left + b->width);
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r.height = max(0, bottom - r.top);
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r.width = max(0, right - r.left);
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return r;
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}
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/*
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* v4l2_rect helper function: scale rect r by to->width / from->width and
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* to->height / from->height.
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*/
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void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
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const struct v4l2_rect *to)
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{
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if (from->width == 0 || from->height == 0) {
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r->left = r->top = r->width = r->height = 0;
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return;
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}
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r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
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r->width = ((r->width * to->width) / from->width) & ~1;
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r->top = ((r->top - from->top) * to->height) / from->height;
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r->height = (r->height * to->height) / from->height;
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}
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bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
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{
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/*
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* IF the left side of r1 is to the right of the right side of r2 OR
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* the left side of r2 is to the right of the right side of r1 THEN
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* they do not overlap.
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*/
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if (r1->left >= r2->left + r2->width ||
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r2->left >= r1->left + r1->width)
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return false;
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/*
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* IF the top side of r1 is below the bottom of r2 OR
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* the top side of r2 is below the bottom of r1 THEN
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* they do not overlap.
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*/
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if (r1->top >= r2->top + r2->height ||
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r2->top >= r1->top + r1->height)
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return false;
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return true;
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}
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int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
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{
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unsigned w = r->width;
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unsigned h = r->height;
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if (!(flags & V4L2_SEL_FLAG_LE)) {
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w++;
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h++;
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if (w < 2)
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w = 2;
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if (h < 2)
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h = 2;
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}
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if (!(flags & V4L2_SEL_FLAG_GE)) {
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if (w > MAX_WIDTH)
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w = MAX_WIDTH;
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if (h > MAX_HEIGHT)
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h = MAX_HEIGHT;
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}
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w = w & ~1;
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h = h & ~1;
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if (w < 2 || h < 2)
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return -ERANGE;
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if (w > MAX_WIDTH || h > MAX_HEIGHT)
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return -ERANGE;
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if (r->top < 0)
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r->top = 0;
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if (r->left < 0)
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r->left = 0;
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r->left &= ~1;
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r->top &= ~1;
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if (r->left + w > MAX_WIDTH)
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r->left = MAX_WIDTH - w;
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if (r->top + h > MAX_HEIGHT)
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r->top = MAX_HEIGHT - h;
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if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
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(V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
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(r->width != w || r->height != h))
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return -ERANGE;
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r->width = w;
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r->height = h;
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return 0;
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}
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int vivid_enum_fmt_vid(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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struct vivid_dev *dev = video_drvdata(file);
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const struct vivid_fmt *fmt;
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if (f->index >= ARRAY_SIZE(vivid_formats) -
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(dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
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return -EINVAL;
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fmt = &vivid_formats[f->index];
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strlcpy(f->description, fmt->name, sizeof(f->description));
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f->pixelformat = fmt->fourcc;
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return 0;
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}
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int vidioc_enum_fmt_vid_mplane(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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struct vivid_dev *dev = video_drvdata(file);
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if (!dev->multiplanar)
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return -ENOTTY;
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return vivid_enum_fmt_vid(file, priv, f);
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}
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int vidioc_enum_fmt_vid(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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struct vivid_dev *dev = video_drvdata(file);
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if (dev->multiplanar)
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return -ENOTTY;
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return vivid_enum_fmt_vid(file, priv, f);
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}
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int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
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{
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struct vivid_dev *dev = video_drvdata(file);
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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;
|
|
}
|