112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
/****************************************************************************
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* video/videomode/videomode_dump.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <syslog.h>
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#include <nuttx/video/videomode.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define DIVIDE(x,y) (((x) + ((y) / 2)) / (y))
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/****************************************************************************
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* Name: videomode_refresh
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*
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* Description:
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* Calculate the refresh rate.
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*
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* Input Parameters:
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* videomode - The videomode to be dumped
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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static uint32_t videomode_refresh(FAR const struct videomode_s *videomode)
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{
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return DIVIDE(DIVIDE(videomode->dotclock * 1000, videomode->htotal),
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videomode->vtotal);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: videomode_dump
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*
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* Description:
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* Dump the content of a video mode one one line to the SYSLOG.
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*
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* Input Parameters:
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* prefix - A string to print at the beginning of the line. May be
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* NULL
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* videomode - The videomode to be dumped
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* terse - True: Print only a minimal amount of data, sufficient to
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* identify the video mode.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void videomode_dump(FAR const char *prefix,
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FAR const struct videomode_s *videomode, bool terse)
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{
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if (videomode != NULL)
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{
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if (prefix != NULL)
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{
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syslog(LOG_INFO, "%s", prefix);
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}
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syslog(LOG_INFO, "%ux%u @ %luHz",
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videomode->hdisplay, videomode->vdisplay,
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(unsigned long)videomode_refresh(videomode));
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if (!terse)
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{
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syslog(LOG_INFO, " (%lu %u %u %u %u %u %u",
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(unsigned long)videomode->dotclock,
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videomode->hsync_start,
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videomode->hsync_end,
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videomode->htotal,
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videomode->vsync_start,
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videomode->vsync_end,
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videomode->vtotal);
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syslog(LOG_INFO, " %s%sH %s%sV)\n",
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videomode->flags & VID_PHSYNC ? "+" : "",
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videomode->flags & VID_NHSYNC ? "-" : "",
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videomode->flags & VID_PVSYNC ? "+" : "",
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videomode->flags & VID_NVSYNC ? "-" : "");
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}
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}
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}
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