mirror of https://gitee.com/openkylin/linux.git
937 lines
22 KiB
C
937 lines
22 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, 14000000, 775000000,
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V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
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V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
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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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.fourcc = V4L2_PIX_FMT_YUYV,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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.data_offset = { PLANE0_DATA_OFFSET },
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},
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{
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.fourcc = V4L2_PIX_FMT_UYVY,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YVYU,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_VYUY,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV422P,
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.vdownsampling = { 1, 1, 1 },
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.bit_depth = { 8, 4, 4 },
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.is_yuv = true,
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.planes = 3,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV420,
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.vdownsampling = { 1, 2, 2 },
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.bit_depth = { 8, 4, 4 },
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.is_yuv = true,
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.planes = 3,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YVU420,
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.vdownsampling = { 1, 2, 2 },
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.bit_depth = { 8, 4, 4 },
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.is_yuv = true,
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.planes = 3,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV12,
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.vdownsampling = { 1, 2 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV21,
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.vdownsampling = { 1, 2 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV16,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV61,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV24,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 16 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV42,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 16 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV555, /* uuuvvvvv ayyyyyuu */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0x8000,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV565, /* uuuvvvvv yyyyyuuu */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV444, /* uuuuvvvv aaaayyyy */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0xf000,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV32, /* ayuv */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0x000000ff,
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},
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{
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.fourcc = V4L2_PIX_FMT_GREY,
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_Y16,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_Y16_BE,
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.is_yuv = true,
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB332, /* rrrgggbb */
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.can_do_overlay = true,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.can_do_overlay = true,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB444, /* xxxxrrrr ggggbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_XRGB444, /* xxxxrrrr ggggbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_ARGB444, /* aaaarrrr ggggbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0x00f0,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb xrrrrrgg */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.can_do_overlay = true,
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},
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{
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.fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb xrrrrrgg */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.can_do_overlay = true,
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},
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{
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.fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 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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.fourcc = V4L2_PIX_FMT_RGB555X, /* xrrrrrgg gggbbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_XRGB555X, /* xrrrrrgg gggbbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_ARGB555X, /* arrrrrgg gggbbbbb */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0x0080,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
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.vdownsampling = { 1 },
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.bit_depth = { 24 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
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.vdownsampling = { 1 },
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.bit_depth = { 24 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_BGR666, /* bbbbbbgg ggggrrrr rrxxxxxx */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB32, /* xrgb */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_BGR32, /* bgrx */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_XRGB32, /* xrgb */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_XBGR32, /* bgrx */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_ARGB32, /* argb */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0x000000ff,
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},
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{
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.fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */
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.vdownsampling = { 1 },
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.bit_depth = { 32 },
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.planes = 1,
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.buffers = 1,
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.alpha_mask = 0xff000000,
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},
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{
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.fourcc = V4L2_PIX_FMT_SBGGR8, /* Bayer BG/GR */
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGBRG8, /* Bayer GB/RG */
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGRBG8, /* Bayer GR/BG */
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SRGGB8, /* Bayer RG/GB */
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.vdownsampling = { 1 },
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.bit_depth = { 8 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SBGGR10, /* Bayer BG/GR */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGBRG10, /* Bayer GB/RG */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGRBG10, /* Bayer GR/BG */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SRGGB10, /* Bayer RG/GB */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SBGGR12, /* Bayer BG/GR */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGBRG12, /* Bayer GB/RG */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SGRBG12, /* Bayer GR/BG */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_SRGGB12, /* Bayer RG/GB */
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.vdownsampling = { 1 },
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.bit_depth = { 16 },
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.planes = 1,
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.buffers = 1,
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},
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/* Multiplanar formats */
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{
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.fourcc = V4L2_PIX_FMT_NV16M,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 2,
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.data_offset = { PLANE0_DATA_OFFSET, 0 },
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},
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{
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.fourcc = V4L2_PIX_FMT_NV61M,
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.vdownsampling = { 1, 1 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 2,
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.data_offset = { 0, PLANE0_DATA_OFFSET },
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV420M,
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.vdownsampling = { 1, 2, 2 },
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.bit_depth = { 8, 4, 4 },
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.is_yuv = true,
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.planes = 3,
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.buffers = 3,
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},
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{
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.fourcc = V4L2_PIX_FMT_YVU420M,
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.vdownsampling = { 1, 2, 2 },
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.bit_depth = { 8, 4, 4 },
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.is_yuv = true,
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.planes = 3,
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.buffers = 3,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV12M,
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.vdownsampling = { 1, 2 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_NV21M,
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.vdownsampling = { 1, 2 },
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.bit_depth = { 8, 8 },
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.is_yuv = true,
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.planes = 2,
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.buffers = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUV422M,
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.vdownsampling = { 1, 1, 1 },
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|
.bit_depth = { 8, 4, 4 },
|
|
.is_yuv = true,
|
|
.planes = 3,
|
|
.buffers = 3,
|
|
},
|
|
{
|
|
.fourcc = V4L2_PIX_FMT_YVU422M,
|
|
.vdownsampling = { 1, 1, 1 },
|
|
.bit_depth = { 8, 4, 4 },
|
|
.is_yuv = true,
|
|
.planes = 3,
|
|
.buffers = 3,
|
|
},
|
|
{
|
|
.fourcc = V4L2_PIX_FMT_YUV444M,
|
|
.vdownsampling = { 1, 1, 1 },
|
|
.bit_depth = { 8, 8, 8 },
|
|
.is_yuv = true,
|
|
.planes = 3,
|
|
.buffers = 3,
|
|
},
|
|
{
|
|
.fourcc = V4L2_PIX_FMT_YVU444M,
|
|
.vdownsampling = { 1, 1, 1 },
|
|
.bit_depth = { 8, 8, 8 },
|
|
.is_yuv = true,
|
|
.planes = 3,
|
|
.buffers = 3,
|
|
},
|
|
};
|
|
|
|
/* There are this many multiplanar formats in the list */
|
|
#define VIVID_MPLANAR_FORMATS 10
|
|
|
|
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->xfer_func = pix->xfer_func;
|
|
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->xfer_func = mp->xfer_func;
|
|
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];
|
|
|
|
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;
|
|
}
|