/****************************************************************************
* video/videomode/videomode_lookup.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
#include <debug.h>
#include <nuttx/video/videomode.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* These macros help the mode lines below fit on one line. */
#define HP VID_PHSYNC
#define HN VID_NHSYNC
#define VP VID_PVSYNC
#define VN VID_NVSYNC
#define I VID_INTERLACE
#define DS VID_DBLSCAN
#define M(nm,hr,vr,clk,hs,he,ht,vs,ve,vt,f) \
{ \
clk, hr, hs, he, ht, vr, vs, ve, vt, 0, f, nm \
}
/****************************************************************************
* Private Data
****************************************************************************/
static const struct videomode_s g_videomodes[] =
{
M("640x350x85",
640, 350, 31500, 672, 736, 832, 382, 385, 445, HP | VN),
M("640x400x85",
640, 400, 31500, 672, 736, 832, 401, 404, 445, HN | VP),
M("720x400x70",
720, 400, 28320, 738, 846, 900, 412, 414, 449, HN | VP),
M("720x400x85",
720, 400, 35500, 756, 828, 936, 401, 404, 446, HN | VP),
M("720x400x87",
720, 400, 35500, 738, 846, 900, 421, 423, 449, HN | VN),
M("640x480x60",
640, 480, 25175, 656, 752, 800, 490, 492, 525, HN | VN),
M("640x480x72",
640, 480, 31500, 664, 704, 832, 489, 492, 520, HN | VN),
M("640x480x75",
640, 480, 31500, 656, 720, 840, 481, 484, 500, HN | VN),
M("640x480x85",
640, 480, 36000, 696, 752, 832, 481, 484, 509, HN | VN),
M("800x600x56",
800, 600, 36000, 824, 896, 1024, 601, 603, 625, HP | VP),
M("800x600x60",
800, 600, 40000, 840, 968, 1056, 601, 605, 628, HP | VP),
M("800x600x72",
800, 600, 50000, 856, 976, 1040, 637, 643, 666, HP | VP),
M("800x600x75",
800, 600, 49500, 816, 896, 1056, 601, 604, 625, HP | VP),
M("800x600x85",
800, 600, 56250, 832, 896, 1048, 601, 604, 631, HP | VP),
M("1024x768x87i",
1024, 768, 44900, 1032, 1208, 1264, 768, 776, 817, HP | VP | I),
M("1024x768x60",
1024, 768, 65000, 1048, 1184, 1344, 771, 777, 806, HN | VN),
M("1024x768x70",
1024, 768, 75000, 1048, 1184, 1328, 771, 777, 806, HN | VN),
M("1024x768x75",
1024, 768, 78750, 1040, 1136, 1312, 769, 772, 800, HP | VP),
M("1024x768x85",
1024, 768, 94500, 1072, 1168, 1376, 769, 772, 808, HP | VP),
M("1024x768x89",
1024, 768, 100000, 1108, 1280, 1408, 768, 780, 796, HP | VP),
M("1152x864x75",
1152, 864, 108000, 1216, 1344, 1600, 865, 868, 900, HP | VP),
M("1280x768x75",
1280, 768, 105640, 1312, 1712, 1744, 782, 792, 807, HN | VP),
M("1280x960x60",
1280, 960, 108000, 1376, 1488, 1800, 961, 964, 1000, HP | VP),
M("1280x960x85",
1280, 960, 148500, 1344, 1504, 1728, 961, 964, 1011, HP | VP),
M("1280x1024x60",
1280, 1024, 108000, 1328, 1440, 1688, 1025, 1028, 1066, HP | VP),
M("1280x1024x70",
1280, 1024, 126000, 1328, 1440, 1688, 1025, 1028, 1066, HP | VP),
M("1280x1024x75",
1280, 1024, 135000, 1296, 1440, 1688, 1025, 1028, 1066, HP | VP),
M("1280x1024x85",
1280, 1024, 157500, 1344, 1504, 1728, 1025, 1028, 1072, HP | VP),
M("1600x1200x60",
1600, 1200, 162000, 1664, 1856, 2160, 1201, 1204, 1250, HP | VP),
M("1600x1200x65",
1600, 1200, 175500, 1664, 1856, 2160, 1201, 1204, 1250, HP | VP),
M("1600x1200x70",
1600, 1200, 189000, 1664, 1856, 2160, 1201, 1204, 1250, HP | VP),
M("1600x1200x75",
1600, 1200, 202500, 1664, 1856, 2160, 1201, 1204, 1250, HP | VP),
M("1600x1200x85",
1600, 1200, 229500, 1664, 1856, 2160, 1201, 1204, 1250, HP | VP),
M("1680x1050x60",
1680, 1050, 147140, 1784, 1968, 2256, 1051, 1054, 1087, HP | VP),
M("1792x1344x60",
1792, 1344, 204800, 1920, 2120, 2448, 1345, 1348, 1394, HN | VP),
M("1792x1344x75",
1792, 1344, 261000, 1888, 2104, 2456, 1345, 1348, 1417, HN | VP),
M("1856x1392x60",
1856, 1392, 218300, 1952, 2176, 2528, 1393, 1396, 1439, HN | VP),
M("1856x1392x75",
1856, 1392, 288000, 1984, 2208, 2560, 1393, 1396, 1500, HN | VP),
M("1920x1440x60",
1920, 1440, 234000, 2048, 2256, 2600, 1441, 1444, 1500, HN | VP),
M("1920x1440x75",
1920, 1440, 297000, 2064, 2288, 2640, 1441, 1444, 1500, HN | VP),
M("832x624x74",
832, 624, 57284, 864, 928, 1152, 625, 628, 667, HN | VN),
M("1152x768x54",
1152, 768, 64995, 1178, 1314, 1472, 771, 777, 806, HP | VP),
M("1400x1050x60",
1400, 1050, 122000, 1488, 1640, 1880, 1052, 1064, 1082, HP | VP),
M("1400x1050x74",
1400, 1050, 155800, 1464, 1784, 1912, 1052, 1064, 1090, HP | VP),
M("1152x900x66",
1152, 900, 94500, 1192, 1320, 1528, 902, 906, 937, HN | VN),
M("1152x900x76",
1152, 900, 105560, 1168, 1280, 1472, 902, 906, 943, HN | VN),
/* Derived Double Scan Modes */
M("320x175x85",
320, 175, 15750, 336, 368, 416, 191, 192, 222, HP | VN | DS),
M("320x200x85",
320, 200, 15750, 336, 368, 416, 200, 202, 222, HN | VP | DS),
M("360x200x70",
360, 200, 14160, 369, 423, 450, 206, 207, 224, HN | VP | DS),
M("360x200x85",
360, 200, 17750, 378, 414, 468, 200, 202, 223, HN | VP | DS),
M("360x200x87",
360, 200, 17750, 369, 423, 450, 210, 211, 224, HN | VN | DS),
M("320x240x60",
320, 240, 12587, 328, 376, 400, 245, 246, 262, HN | VN | DS),
M("320x240x72",
320, 240, 15750, 332, 352, 416, 244, 246, 260, HN | VN | DS),
M("320x240x75",
320, 240, 15750, 328, 360, 420, 240, 242, 250, HN | VN | DS),
M("320x240x85",
320, 240, 18000, 348, 376, 416, 240, 242, 254, HN | VN | DS),
M("400x300x56",
400, 300, 18000, 412, 448, 512, 300, 301, 312, HP | VP | DS),
M("400x300x60",
400, 300, 20000, 420, 484, 528, 300, 302, 314, HP | VP | DS),
M("400x300x72",
400, 300, 25000, 428, 488, 520, 318, 321, 333, HP | VP | DS),
M("400x300x75",
400, 300, 24750, 408, 448, 528, 300, 302, 312, HP | VP | DS),
M("400x300x85",
400, 300, 28125, 416, 448, 524, 300, 302, 315, HP | VP | DS),
M("512x384x87i",
512, 384, 22450, 516, 604, 632, 384, 388, 408, HP | VP | DS | I),
M("512x384x60",
512, 384, 32500, 524, 592, 672, 385, 388, 403, HN | VN | DS),
M("512x384x70",
512, 384, 37500, 524, 592, 664, 385, 388, 403, HN | VN | DS),
M("512x384x75",
512, 384, 39375, 520, 568, 656, 384, 386, 400, HP | VP | DS),
M("512x384x85",
512, 384, 47250, 536, 584, 688, 384, 386, 404, HP | VP | DS),
M("512x384x89",
512, 384, 50000, 554, 640, 704, 384, 390, 398, HP | VP | DS),
M("576x432x75",
576, 432, 54000, 608, 672, 800, 432, 434, 450, HP | VP | DS),
M("640x384x75",
640, 384, 52820, 656, 856, 872, 391, 396, 403, HN | VP | DS),
M("640x480x60",
640, 480, 54000, 688, 744, 900, 480, 482, 500, HP | VP | DS),
M("640x480x85",
640, 480, 74250, 672, 752, 864, 480, 482, 505, HP | VP | DS),
M("640x512x60",
640, 512, 54000, 664, 720, 844, 512, 514, 533, HP | VP | DS),
M("640x512x70",
640, 512, 63000, 664, 720, 844, 512, 514, 533, HP | VP | DS),
M("640x512x75",
640, 512, 67500, 648, 720, 844, 512, 514, 533, HP | VP | DS),
M("640x512x85",
640, 512, 78750, 672, 752, 864, 512, 514, 536, HP | VP | DS),
M("800x600x60",
800, 600, 81000, 832, 928, 1080, 600, 602, 625, HP | VP | DS),
M("800x600x65",
800, 600, 87750, 832, 928, 1080, 600, 602, 625, HP | VP | DS),
M("800x600x70",
800, 600, 94500, 832, 928, 1080, 600, 602, 625, HP | VP | DS),
M("800x600x75",
800, 600, 101250, 832, 928, 1080, 600, 602, 625, HP | VP | DS),
M("800x600x85",
800, 600, 114750, 832, 928, 1080, 600, 602, 625, HP | VP | DS),
M("840x525x60",
840, 525, 73570, 892, 984, 1128, 525, 527, 543, HP | VP | DS),
M("896x672x60",
896, 672, 102400, 960, 1060, 1224, 672, 674, 697, HN | VP | DS),
M("896x672x75",
896, 672, 130500, 944, 1052, 1228, 672, 674, 708, HN | VP | DS),
M("928x696x60",
928, 696, 109150, 976, 1088, 1264, 696, 698, 719, HN | VP | DS),
M("928x696x75",
928, 696, 144000, 992, 1104, 1280, 696, 698, 750, HN | VP | DS),
M("960x720x60",
960, 720, 117000, 1024, 1128, 1300, 720, 722, 750, HN | VP | DS),
M("960x720x75",
960, 720, 148500, 1032, 1144, 1320, 720, 722, 750, HN | VP | DS),
M("416x312x74",
416, 312, 28642, 432, 464, 576, 312, 314, 333, HN | VN | DS),
M("576x384x54",
576, 384, 32497, 589, 657, 736, 385, 388, 403, HP | VP | DS),
M("700x525x60",
700, 525, 61000, 744, 820, 940, 526, 532, 541, HP | VP | DS),
M("700x525x74",
700, 525, 77900, 732, 892, 956, 526, 532, 545, HP | VP | DS),
M("576x450x66",
576, 450, 47250, 596, 660, 764, 451, 453, 468, HN | VN | DS),
M("576x450x76",
576, 450, 52780, 584, 640, 736, 451, 453, 471, HN | VN | DS),
};
static const int g_nvideomodes = 46;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: videomode_lookup_by_name
*
* Description:
* Find the video mode in a look-up table by the name assigned to the
* video mode.
*
****************************************************************************/
FAR const struct videomode_s *videomode_lookup_by_name(FAR const char *name)
{
int i;
for (i = 0; i < g_nvideomodes; i++)
{
if (strcmp(name, g_videomodes[i].name) == 0)
{
return &g_videomodes[i];
}
}
return NULL;
}
/****************************************************************************
* Name: videomode_lookup_by_dotclock
*
* Description:
* Find the video mode in a look-up table with the matching width and
* height and the closest dot clock that does not exceed the requested
* dot clock.
*
****************************************************************************/
#if 0 /* Not used */
FAR const struct videomode_s *
videomode_lookup_by_dotclock(uint16_t width, uint16_t height,
uint32_t dotclock)
{
FAR const struct videomode_s *curr;
FAR const struct videomode_s *best = NULL;
int i;
lcdinfo("Looking for %u x %u at up to %lu kHz\n",
width, height, (unsigned long)dotclock);
for (i = 0; i < g_nvideomodes; i++)
{
curr = &g_videomodes[i];
if (curr->hdisplay == width && curr->vdisplay == height &&
curr->dotclock <= dotclock)
{
if (best != NULL)
{
if (curr->dotclock > best->dotclock)
{
best = curr;
}
}
}
else
{
best = curr;
}
}
if (best != NULL)
{
lcdinfo("Found %s\n", best->name);
}
return best;
}
#endif
/****************************************************************************
* Name: videomode_lookup_by_refresh
*
* Description:
* Find the video mode in a look-up table with the matching width and
* height and the closest refresh rate that does not exceed the requested
* rate.
*
****************************************************************************/
#if 0 /* Not used */
FAR const struct videomode_s *
videomode_lookup_by_refresh(uint16_t width, uint16_t height,
uint16_t refresh)
{
FAR const struct videomode_s *curr;
FAR const struct videomode_s *best = NULL;
uint32_t mref;
int closest = 1000;
int diff;
int i;
lcdinfo("Looking for %u x %u at up to %u Hz\n",
width, height, refresh);
for (i = 0; i < g_nvideomodes; i++)
{
curr = &g_videomodes[i];
if (curr->hdisplay == width && curr->vdisplay == height)
{
mref = curr->dotclock * 1000 / (curr->htotal * curr->vtotal);
diff = mref - (uint32_t)refresh;
if (diff < 0)
{
diff = -diff;
}
lcdinfo("%s in %lu Hz, diff %d\n",
curr->name, (unsigned long)mref, diff);
if (best != NULL)
{
if (diff < closest)
{
best = curr;
closest = diff;
}
}
else
{
best = curr;
closest = diff;
}
}
}
if (best != NULL)
{
lcdinfo("Found %s %lu\n",
best->name, (unsigned long)best->dotclock);
}
return best;
}
#endif