321 lines
14 KiB
C
321 lines
14 KiB
C
/****************************************************************************
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* video/videomode/videomode_lookup.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Derives from logic in FreeBSD which has an equivalent 3-clause BSD
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* license:
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*
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* Copyright (c) 2006 Itronix Inc. All rights reserved.
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* Written by Garrett D'Amore for Itronix Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of Itronix Inc. may not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <string.h>
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#include <debug.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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/* These macros help the mode lines below fit on one line. */
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#define HP VID_PHSYNC
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#define HN VID_NHSYNC
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#define VP VID_PVSYNC
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#define VN VID_NVSYNC
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#define I VID_INTERLACE
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#define DS VID_DBLSCAN
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#define M(nm,hr,vr,clk,hs,he,ht,vs,ve,vt,f) \
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{ \
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clk, hr, hs, he, ht, vr, vs, ve, vt, 0, f, nm \
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}
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct videomode_s g_videomodes[] =
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{
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M("640x350x85", 640, 350, 31500, 672, 736, 832, 382, 385, 445, HP|VN),
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M("640x400x85", 640, 400, 31500, 672, 736, 832, 401, 404, 445, HN|VP),
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M("720x400x70", 720, 400, 28320, 738, 846, 900, 412, 414, 449, HN|VP),
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M("720x400x85", 720, 400, 35500, 756, 828, 936, 401, 404, 446, HN|VP),
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M("720x400x87", 720, 400, 35500, 738, 846, 900, 421, 423, 449, HN|VN),
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M("640x480x60", 640, 480, 25175, 656, 752, 800, 490, 492, 525, HN|VN),
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M("640x480x72", 640, 480, 31500, 664, 704, 832, 489, 492, 520, HN|VN),
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M("640x480x75", 640, 480, 31500, 656, 720, 840, 481, 484, 500, HN|VN),
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M("640x480x85", 640, 480, 36000, 696, 752, 832, 481, 484, 509, HN|VN),
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M("800x600x56", 800, 600, 36000, 824, 896, 1024, 601, 603, 625, HP|VP),
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M("800x600x60", 800, 600, 40000, 840, 968, 1056, 601, 605, 628, HP|VP),
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M("800x600x72", 800, 600, 50000, 856, 976, 1040, 637, 643, 666, HP|VP),
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M("800x600x75", 800, 600, 49500, 816, 896, 1056, 601, 604, 625, HP|VP),
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M("800x600x85", 800, 600, 56250, 832, 896, 1048, 601, 604, 631, HP|VP),
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M("1024x768x87i", 1024, 768, 44900, 1032, 1208, 1264, 768, 776, 817, HP|VP|I),
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M("1024x768x60", 1024, 768, 65000, 1048, 1184, 1344, 771, 777, 806, HN|VN),
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M("1024x768x70", 1024, 768, 75000, 1048, 1184, 1328, 771, 777, 806, HN|VN),
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M("1024x768x75", 1024, 768, 78750, 1040, 1136, 1312, 769, 772, 800, HP|VP),
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M("1024x768x85", 1024, 768, 94500, 1072, 1168, 1376, 769, 772, 808, HP|VP),
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M("1024x768x89", 1024, 768, 100000, 1108, 1280, 1408, 768, 780, 796, HP|VP),
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M("1152x864x75", 1152, 864, 108000, 1216, 1344, 1600, 865, 868, 900, HP|VP),
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M("1280x768x75", 1280, 768, 105640, 1312, 1712, 1744, 782, 792, 807, HN|VP),
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M("1280x960x60", 1280, 960, 108000, 1376, 1488, 1800, 961, 964, 1000, HP|VP),
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M("1280x960x85", 1280, 960, 148500, 1344, 1504, 1728, 961, 964, 1011, HP|VP),
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M("1280x1024x60", 1280, 1024, 108000, 1328, 1440, 1688, 1025, 1028, 1066, HP|VP),
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M("1280x1024x70", 1280, 1024, 126000, 1328, 1440, 1688, 1025, 1028, 1066, HP|VP),
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M("1280x1024x75", 1280, 1024, 135000, 1296, 1440, 1688, 1025, 1028, 1066, HP|VP),
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M("1280x1024x85", 1280, 1024, 157500, 1344, 1504, 1728, 1025, 1028, 1072, HP|VP),
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M("1600x1200x60", 1600, 1200, 162000, 1664, 1856, 2160, 1201, 1204, 1250, HP|VP),
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M("1600x1200x65", 1600, 1200, 175500, 1664, 1856, 2160, 1201, 1204, 1250, HP|VP),
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M("1600x1200x70", 1600, 1200, 189000, 1664, 1856, 2160, 1201, 1204, 1250, HP|VP),
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M("1600x1200x75", 1600, 1200, 202500, 1664, 1856, 2160, 1201, 1204, 1250, HP|VP),
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M("1600x1200x85", 1600, 1200, 229500, 1664, 1856, 2160, 1201, 1204, 1250, HP|VP),
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M("1680x1050x60", 1680, 1050, 147140, 1784, 1968, 2256, 1051, 1054, 1087, HP|VP),
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M("1792x1344x60", 1792, 1344, 204800, 1920, 2120, 2448, 1345, 1348, 1394, HN|VP),
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M("1792x1344x75", 1792, 1344, 261000, 1888, 2104, 2456, 1345, 1348, 1417, HN|VP),
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M("1856x1392x60", 1856, 1392, 218300, 1952, 2176, 2528, 1393, 1396, 1439, HN|VP),
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M("1856x1392x75", 1856, 1392, 288000, 1984, 2208, 2560, 1393, 1396, 1500, HN|VP),
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M("1920x1440x60", 1920, 1440, 234000, 2048, 2256, 2600, 1441, 1444, 1500, HN|VP),
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M("1920x1440x75", 1920, 1440, 297000, 2064, 2288, 2640, 1441, 1444, 1500, HN|VP),
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M("832x624x74", 832, 624, 57284, 864, 928, 1152, 625, 628, 667, HN|VN),
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M("1152x768x54", 1152, 768, 64995, 1178, 1314, 1472, 771, 777, 806, HP|VP),
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M("1400x1050x60", 1400, 1050, 122000, 1488, 1640, 1880, 1052, 1064, 1082, HP|VP),
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M("1400x1050x74", 1400, 1050, 155800, 1464, 1784, 1912, 1052, 1064, 1090, HP|VP),
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M("1152x900x66", 1152, 900, 94500, 1192, 1320, 1528, 902, 906, 937, HN|VN),
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M("1152x900x76", 1152, 900, 105560, 1168, 1280, 1472, 902, 906, 943, HN|VN),
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/* Derived Double Scan Modes */
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M("320x175x85", 320, 175, 15750, 336, 368, 416, 191, 192, 222, HP|VN|DS),
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M("320x200x85", 320, 200, 15750, 336, 368, 416, 200, 202, 222, HN|VP|DS),
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M("360x200x70", 360, 200, 14160, 369, 423, 450, 206, 207, 224, HN|VP|DS),
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M("360x200x85", 360, 200, 17750, 378, 414, 468, 200, 202, 223, HN|VP|DS),
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M("360x200x87", 360, 200, 17750, 369, 423, 450, 210, 211, 224, HN|VN|DS),
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M("320x240x60", 320, 240, 12587, 328, 376, 400, 245, 246, 262, HN|VN|DS),
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M("320x240x72", 320, 240, 15750, 332, 352, 416, 244, 246, 260, HN|VN|DS),
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M("320x240x75", 320, 240, 15750, 328, 360, 420, 240, 242, 250, HN|VN|DS),
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M("320x240x85", 320, 240, 18000, 348, 376, 416, 240, 242, 254, HN|VN|DS),
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M("400x300x56", 400, 300, 18000, 412, 448, 512, 300, 301, 312, HP|VP|DS),
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M("400x300x60", 400, 300, 20000, 420, 484, 528, 300, 302, 314, HP|VP|DS),
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M("400x300x72", 400, 300, 25000, 428, 488, 520, 318, 321, 333, HP|VP|DS),
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M("400x300x75", 400, 300, 24750, 408, 448, 528, 300, 302, 312, HP|VP|DS),
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M("400x300x85", 400, 300, 28125, 416, 448, 524, 300, 302, 315, HP|VP|DS),
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M("512x384x87i", 512, 384, 22450, 516, 604, 632, 384, 388, 408, HP|VP|DS|I),
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M("512x384x60", 512, 384, 32500, 524, 592, 672, 385, 388, 403, HN|VN|DS),
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M("512x384x70", 512, 384, 37500, 524, 592, 664, 385, 388, 403, HN|VN|DS),
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M("512x384x75", 512, 384, 39375, 520, 568, 656, 384, 386, 400, HP|VP|DS),
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M("512x384x85", 512, 384, 47250, 536, 584, 688, 384, 386, 404, HP|VP|DS),
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M("512x384x89", 512, 384, 50000, 554, 640, 704, 384, 390, 398, HP|VP|DS),
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M("576x432x75", 576, 432, 54000, 608, 672, 800, 432, 434, 450, HP|VP|DS),
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M("640x384x75", 640, 384, 52820, 656, 856, 872, 391, 396, 403, HN|VP|DS),
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M("640x480x60", 640, 480, 54000, 688, 744, 900, 480, 482, 500, HP|VP|DS),
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M("640x480x85", 640, 480, 74250, 672, 752, 864, 480, 482, 505, HP|VP|DS),
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M("640x512x60", 640, 512, 54000, 664, 720, 844, 512, 514, 533, HP|VP|DS),
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M("640x512x70", 640, 512, 63000, 664, 720, 844, 512, 514, 533, HP|VP|DS),
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M("640x512x75", 640, 512, 67500, 648, 720, 844, 512, 514, 533, HP|VP|DS),
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M("640x512x85", 640, 512, 78750, 672, 752, 864, 512, 514, 536, HP|VP|DS),
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M("800x600x60", 800, 600, 81000, 832, 928, 1080, 600, 602, 625, HP|VP|DS),
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M("800x600x65", 800, 600, 87750, 832, 928, 1080, 600, 602, 625, HP|VP|DS),
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M("800x600x70", 800, 600, 94500, 832, 928, 1080, 600, 602, 625, HP|VP|DS),
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M("800x600x75", 800, 600, 101250, 832, 928, 1080, 600, 602, 625, HP|VP|DS),
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M("800x600x85", 800, 600, 114750, 832, 928, 1080, 600, 602, 625, HP|VP|DS),
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M("840x525x60", 840, 525, 73570, 892, 984, 1128, 525, 527, 543, HP|VP|DS),
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M("896x672x60", 896, 672, 102400, 960, 1060, 1224, 672, 674, 697, HN|VP|DS),
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M("896x672x75", 896, 672, 130500, 944, 1052, 1228, 672, 674, 708, HN|VP|DS),
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M("928x696x60", 928, 696, 109150, 976, 1088, 1264, 696, 698, 719, HN|VP|DS),
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M("928x696x75", 928, 696, 144000, 992, 1104, 1280, 696, 698, 750, HN|VP|DS),
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M("960x720x60", 960, 720, 117000, 1024, 1128, 1300, 720, 722, 750, HN|VP|DS),
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M("960x720x75", 960, 720, 148500, 1032, 1144, 1320, 720, 722, 750, HN|VP|DS),
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M("416x312x74", 416, 312, 28642, 432, 464, 576, 312, 314, 333, HN|VN|DS),
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M("576x384x54", 576, 384, 32497, 589, 657, 736, 385, 388, 403, HP|VP|DS),
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M("700x525x60", 700, 525, 61000, 744, 820, 940, 526, 532, 541, HP|VP|DS),
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M("700x525x74", 700, 525, 77900, 732, 892, 956, 526, 532, 545, HP|VP|DS),
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M("576x450x66", 576, 450, 47250, 596, 660, 764, 451, 453, 468, HN|VN|DS),
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M("576x450x76", 576, 450, 52780, 584, 640, 736, 451, 453, 471, HN|VN|DS),
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};
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static const int g_nvideomodes = 46;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: videomode_lookup_by_name
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*
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* Description:
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* Find the video mode in a look-up table by the name assigned to the
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* video mode.
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*
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****************************************************************************/
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FAR const struct videomode_s *videomode_lookup_by_name(FAR const char *name)
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{
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int i;
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for (i = 0; i < g_nvideomodes; i++)
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{
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if (strcmp(name, g_videomodes[i].name) == 0)
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{
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return &g_videomodes[i];
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}
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}
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return NULL;
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}
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/****************************************************************************
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* Name: videomode_lookup_by_dotclock
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*
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* Description:
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* Find the video mode in a look-up table with the matching width and
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* height and the closest dot clock that does not exceed the requested
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* dot clock.
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*
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****************************************************************************/
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#if 0 /* Not used */
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FAR const struct videomode_s *
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videomode_lookup_by_dotclock(uint16_t width, uint16_t height,
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uint32_t dotclock)
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{
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FAR const struct videomode_s *curr;
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FAR const struct videomode_s *best = NULL;
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int i;
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lcdinfo("Looking for %u x %u at up to %lu kHz\n",
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width, height, (unsigned long)dotclock);
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for (i = 0; i < g_nvideomodes; i++)
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{
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curr = &g_videomodes[i];
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if (curr->hdisplay == width && curr->vdisplay == height &&
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curr->dotclock <= dotclock)
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{
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if (best != NULL)
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{
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if (curr->dotclock > best->dotclock)
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{
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best = curr;
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}
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}
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}
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else
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{
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best = curr;
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}
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}
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if (best != NULL)
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{
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lcdinfo("Found %s\n", best->name);
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}
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return best;
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}
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#endif
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/****************************************************************************
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* Name: videomode_lookup_by_refresh
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*
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* Description:
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* Find the video mode in a look-up table with the matching width and
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* height and the closest refresh rate that does not exceed the requested
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* rate.
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*
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****************************************************************************/
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#if 0 /* Not used */
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FAR const struct videomode_s *
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videomode_lookup_by_refresh(uint16_t width, uint16_t height,
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uint16_t refresh)
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{
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FAR const struct videomode_s *curr;
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FAR const struct videomode_s *best = NULL;
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uint32_t mref;
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int closest = 1000;
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int diff;
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int i;
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lcdinfo("Looking for %u x %u at up to %u Hz\n",
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width, height, refresh);
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for (i = 0; i < g_nvideomodes; i++)
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{
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curr = &g_videomodes[i];
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if (curr->hdisplay == width && curr->vdisplay == height)
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{
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mref = curr->dotclock * 1000 / (curr->htotal * curr->vtotal);
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diff = mref - (uint32_t)refresh;
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if (diff < 0)
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{
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diff = -diff;
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}
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lcdinfo("%s in %lu Hz, diff %d\n",
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curr->name, (unsigned long)mref, diff);
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if (best != NULL)
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{
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if (diff < closest)
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{
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best = curr;
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closest = diff;
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}
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}
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else
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{
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best = curr;
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closest = diff;
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}
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}
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}
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if (best != NULL)
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{
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lcdinfo("Found %s %lu\n",
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best->name, (unsigned long)best->dotclock);
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}
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return best;
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}
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#endif
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