Commit f533d9f1 authored by Cameron Cawley's avatar Cameron Cawley
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Initial import of ModeLib

parent a674322a
c/** gitlab-language=c linguist-language=c linguist-detectable=true
h/** gitlab-language=c linguist-language=c linguist-detectable=true
/Makefile.d
/o/
/objs/
/oz/
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# Makefile for ModeLib
COMPONENT = ModeLib
OBJS = common mdfsupport
CDFLAGS = -DDODEBUG=1
include CLibrary
# Dynamic dependencies:
Dir <Obey$Dir>
amu all_libs THROWBACK=-throwback
Dir <Obey$Dir>
amu clean
stripdepnd
Dir <Obey$Dir>
amu export_hdrs
amu export_libs THROWBACK=-throwback
/* (0.01)
*
* This file is automatically maintained by srccommit, do not edit manually.
*
*/
#define Module_MajorVersion_CMHG 0.01
#define Module_MinorVersion_CMHG
#define Module_Date_CMHG 12 Jul 2022
#define Module_MajorVersion "0.01"
#define Module_Version 1
#define Module_MinorVersion ""
#define Module_Date "12 Jul 2022"
#define Module_ApplicationDate "12-Jul-22"
#define Module_ComponentName "ModeLib"
#define Module_FullVersion "0.01"
#define Module_HelpVersion "0.01 (12 Jul 2022)"
#define Module_LibraryVersionInfo "0:1"
#include "ModeLib.h"
#include <stdlib.h>
#include <string.h>
bool new_monitordescription(MonitorDescriptionRef *description, const char *name)
{
MonitorDescriptionRef md;
md = (MonitorDescriptionRef) calloc(1, sizeof(MonitorDescription));
if (md == NULL)
{
return false;
}
strncpy(md->name, name, sizeof(md->name));
md->name[sizeof(md->name) - 1] = 0;
md->output_format = -1; /* Output format */
md->external_clock = -1; /* External clock not present */
md->modelist = NULL; /* Empty initially */
md->audio_formats = NULL; /* Empty initially */
*description = md;
return true;
}
void free_monitordescription(MonitorDescriptionRef description)
{
ModeDescriptionRef md;
md = description->modelist;
while (md)
{
ModeDescriptionRef td = md;
md = md->next;
free(td);
}
if (description->audio_formats)
{
free(description->audio_formats);
}
free(description);
}
void compute_modedescription(ModeDescriptionRef md)
{
uint32_t vtot, htot;
int pn;
ModeDef *mp = &md->definition.timings; /* for terseness! */
for (htot = 0, vtot = 0, pn = 0; pn < FR__COUNT; ++pn)
{
htot += mp->hpar[pn];
vtot += mp->vpar[pn];
}
md->line_hz = mp->pixel_khz * 1000 / htot; /* compute line frequency in Hz */
md->frame_mhz = md->line_hz * 1000 / vtot; /* frame frequency in milliHz, high-prec */
if (mp->interlaced)
{
md->frame_mhz /= 2; /* if interlaced, one frame is 2 fields */
}
md->frame_hz = (md->frame_mhz + 500) / 1000; /* & low-prec for user integer Hz matching */
}
This diff is collapsed.
/* Copyright 2016 Castle Technology Ltd
*
* Licensed 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.
*/
/* ModeLib.h */
#ifndef MODELIB_H
#define MODELIB_H
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
/*
* Monitor & modes description as loaded from ModeInfo file: note,
* this does not include pixel depth.
*/
#define MAXMONITORNAME 31 /* arbitrary, but careful not to overrun Display Manager title bar */
#define MAXMODENAME 31 /* arbitrary, but careful not to clip Display Manager menu width */
#define MAXERRORSTR 31 /* must be at least */
typedef struct modelib_error {
int code;
int lineno;
char extra[MAXERRORSTR];
} modelib_error;
#define MODELIB_ERR_NOSPACE 1 /* RMA allocation failed */
#define MODELIB_ERR_INCONSISTENT 2 /* Inconsistent parameters for mode '%1' in file %0 */
#define MODELIB_ERR_EOF 3 /* Unexpected end of file at line %1 of file %0 */
#define MODELIB_ERR_EXPCHAR 4 /* Character '%2' was expected at line %1 of file %0 */
#define MODELIB_ERR_VALUEOVF 5 /* Overlarge value for parameter at line %1 of file %0 */
#define MODELIB_ERR_EXTRAINPUT 6 /* Extraneous trailing input at line %1 of file %0 */
#define MODELIB_ERR_EXPNUM 7 /* Number expected at line %1 of file %0 */
#define MODELIB_ERR_EXPKEY 8 /* Keyword %2 was expected at line %1 of file %0 */
#define MODELIB_ERR_REPKEY 9 /* Keyword %2 repeated at line %1 of file %0 */
#define MODELIB_ERR_NOMODENAME 10 /* No mode_name field in mode ending at line %1 of file %0 */
#define MODELIB_ERR_INCOMPLETE 11 /* Incomplete definition for mode '%2' in file %0 */
#define MODELIB_ERR_UNKNOWNPAR 12 /* Unknown parameter name at line %1 of file %0 */
#define MODELIB_ERR_WRONGCONTEXT 13 /* Wrong context for keyword '%2' at line %1 of file %0 */
#define MODELIB_ERR_UNKNOWNFMT 14 /* Unknown file format code at line %1 of file %0 */
#define MODELIB_ERR_BLANKMONTITLE 15 /* Blank monitor title given at line %1 of file %0 */
#define MODELIB_ERR_DUPMODENAME 16 /* Duplicate mode name '%1' in file %0 */
#define MODELIB_ERR_NOMODES 17 /* No mode definitions found in file %0 */
#define MODELIB_ERR_INVALIDPAR 18 /* Invalid parameter value at line %1 of file %0 */
#define MODELIB_ERR_VALUEOVF2 19 /* Overlarge value for parameter */
/*
* The 6 field framing parameters for each direction, horizontal and
* vertical. In horizontal case, the parameters are measured in VIDC
* pixel times; for vertical, VIDC raster times.
*/
#define FR_SYNC 0 /* sync pulse width */
#define FR_BPCH 1 /* back porch */
#define FR_BDR1 2 /* top (V) / left (H) border height/width */
#define FR_DISP 3 /* active data display height/width */
#define FR_BDR2 4 /* bottom (V) / right (H) border height/width */
#define FR_FPCH 5 /* front porch */
#define FR__COUNT 6 /* how many parameters altogether */
typedef struct
{
uint32_t xres; /* User quoted xres (may differ from hpar[FR_DISP], especially in interlaced modes) */
uint32_t yres; /* User quoted yres (may differ from vpar[FR_DISP], ... */
uint16_t hpar[FR__COUNT]; /* H. framing in pixel times */
uint16_t vpar[FR__COUNT]; /* V. framing in raster times */
uint32_t pixel_khz; /* pixel rate in kHz */
uint32_t external_clock; /* rate of external clock in kHz (use it instead of VCO), or -1 */
uint8_t syncpol; /* sync polarity code (0..3 for now) */
uint8_t interlaced; /* whether mode is interlaced using two seperate framebuffers (0 or 1) */
uint8_t freq, spare2; /* explicit padding so struct is N*4 bytes long */
} ModeDef; /* Abbreviated form, without the name */
typedef struct
{
char name[MAXMODENAME+1];
ModeDef timings;
} ModeDefinition;
/* As stored internally by ScreenModes module */
typedef struct mode_description_
{
struct mode_description_ *next; /* in list built during file parsing */
ModeDefinition definition; /* as extracted from the file */
/* The following are computed once the mode definition is read in from the file */
uint32_t line_hz; /* line rate in Hz (for diagnostics only) */
uint32_t frame_hz:8; /* frame rate in Hz, for user frame rate selection */
uint32_t frame_mhz:24; /* also in mHz (millihertz), for more precise cmp */
uint8_t priority; /* Bits 0-2 = 'Parameter type' from? (EDID 1.4 Section 5) */
/* 0 = Undefined (MDF or something which overrides all else) */
/* 1 = Preferred Timing Mode from base EDID */
/* 2 = Detailed Timing Mode in the base EDID */
/* 3 = Any detailed timing modes in extension blocks */
/* 4 = Any optional 3-byte CVT codes in the base EDID or extension block */
/* 5 = Standard Timings listed in base EDID or extension blocks */
/* 6 = Additional timing mode information: Established Timings I, II, III, */
/* default GTF, GTF secondary curve and CVT */
/* 7 = Base VIDEO MODE (defined as 640 x 480 x 60Hz). */
} ModeDescription, *ModeDescriptionRef;
/* Audio format information extracted from EDID */
typedef struct
{
uint8_t format_code; /* As per CEA 861-D */
uint8_t max_channels;
uint8_t sample_rates; /* Byte #2 of short audio descriptor */
uint8_t format_specific; /* Byte #3 of short audio descriptor */
} AudioFormat;
/* Description of a monitor & its associated modes */
typedef struct
{
char name[MAXMONITORNAME+1];
ModeDescriptionRef modelist;
uint32_t dpms_state; /* value specified by DPMS_state keyword, or 0 if none */
uint32_t lcd_support; /* 0=>modefile is CRT, 1=>LCD single-panel, 2=>LCD dual panel [WT13-01-95] */
uint32_t external_clock; /* rate of external clock in kHz (use it instead of VCO) */
uint32_t output_format; /* 0=analogue, 1=digital */
AudioFormat *audio_formats; /* (Optional) list of supported audio formats */
int audio_format_count; /* Length of list */
uint8_t speaker_mask; /* (Optional) speaker mask (as per CEA 861-D) */
bool speaker_mask_provided;
} MonitorDescription, *MonitorDescriptionRef;
bool new_monitordescription(MonitorDescriptionRef *description, const char *name);
void free_monitordescription(MonitorDescriptionRef description);
void compute_modedescription(ModeDescriptionRef md);
modelib_error *parse_modefile(modelib_error *err, FILE *handle, MonitorDescriptionRef *description);
#endif
/* EOF ModeLib.h */
/* Copyright 2016 Castle Technology Ltd
*
* Licensed 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.
*/
/* util.h */
#ifndef UTIL_H
#define UTIL_H
#ifndef DODEBUG
#define DODEBUG 0
#endif
#if DODEBUG
#define IFDEBUG if (!1) {} else
#else
#define IFDEBUG if (1) {} else
#endif
#endif
/* EOF util.h */
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