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aptdec
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Remove wxmap reading functionality 

Did anybody even use it anyway?
tags/v1.8.0
Xerbo 1 year ago
parent
d4146f4eb9
commit
c754d5fb57
No known key found for this signature in database GPG Key ID: 34103F6D8F11CEB0
5 changed files with 12 additions and 163 deletions
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  1. +0
    -4
      README.md
  2. +0
    -3
      src/common.h
  3. +10
    -14
      src/main.c
  4. +2
    -141
      src/pngio.c
  5. +0
    -1
      src/pngio.h

+ 0
- 4
README.md View File

@@ -15,7 +15,6 @@ Aptdec can turn the audio recordings into PNG images and generate images such as
- Individual channel: one of the channels form the image
- Temperature image: a temperature compensated image derived from the IR channel
- Palleted image: a image where the color is derived from a palette (false color, etc)
- MCIR: a false color that uses a underlay map for color

The input audio format can be anything supported by `libsndfile` (although only tested with WAV and FLAC). Sample rate doesn't matter, although lower samples rates will process faster.

@@ -71,11 +70,9 @@ Apply a falsecolor palette
-o <path> Output filename
-d <path> Destination directory
-s (15-19) Satellite number
-m <path> Path to WXtoImg map
-p <path> Path to palette
-r Realtime decode
-g Gamma adjustment (1.0 = off)
-k Map offset (in px, default: 0)
```

### Image output types
@@ -84,7 +81,6 @@ Apply a falsecolor palette
- `a`: Channel A
- `b`: Channel B
- `t`: Temperature
- `m`: MCIR (Map Color InfraRed)
- `p`: Palleted

### Post-Processing Effects


+ 0
- 3
src/common.h View File

@@ -31,18 +31,15 @@ typedef struct {
char *type; // Output image type
char *effects; // Effects on the image
int satnum; // The satellite number
char *map; // Path to a map file
char *path; // Output directory
int realtime; // Realtime decoding
char *filename; // Output filename
char *palette; // Filename of palette
float gamma; // Gamma
int mapOffset;
} options_t;

enum imagetypes {
Raw_Image='r',
MCIR='m',
Palleted='p',
Temperature='t',
Channel_A='a',


+ 10
- 14
src/main.c View File

@@ -67,7 +67,16 @@ static char *basename(char *path)
#endif

int main(int argc, const char **argv) {
options_t opts = { "r", "", 19, "", ".", 0, "", "", 1.0, 0 };
options_t opts = {
.type = "r",
.effects = "",
.satnum = 19,
.path = ".",
.realtime = 0,
.filename = "",
.palette = "",
.gamma = 1.0
};

static const char *const usages[] = {
"aptdec [options] [[--] sources]",
@@ -87,13 +96,11 @@ int main(int argc, const char **argv) {

OPT_GROUP("Paths"),
OPT_STRING('p', "palette", &opts.palette, "path to a palette", NULL, 0, 0),
OPT_STRING('m', "map", &opts.map, "path to a WXtoImg map", NULL, 0, 0),
OPT_STRING('o', "filename", &opts.filename, "filename of the output image", NULL, 0, 0),
OPT_STRING('d', "output", &opts.path, "output directory (must exist first)", NULL, 0, 0),

OPT_GROUP("Misc"),
OPT_BOOLEAN('r', "realtime", &opts.realtime, "decode in realtime", NULL, 0, 0),
OPT_INTEGER('k', "map-offset", &opts.mapOffset, "Map offset (in px, default 0)", NULL, 0, 0),
OPT_END(),
};

@@ -182,13 +189,6 @@ static int processAudio(char *filename, options_t *opts){

printf("Total rows: %d\n", img.nrow);

// Fallback for detecting the zenith
// TODO: encode metadata in raw images
if(opts->map != NULL && opts->map[0] != '\0' && img.zenith == 0){
warning("Guessing zenith in image, map will most likely be misaligned");
img.zenith = img.nrow / 2;
}

// Calibrate
img.chA = apt_calibrate(img.prow, img.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);
img.chB = apt_calibrate(img.prow, img.nrow, APT_CHB_OFFSET, APT_CH_WIDTH);
@@ -240,10 +240,6 @@ static int processAudio(char *filename, options_t *opts){
ImageOut(opts, &tmpimg, APT_CHA_OFFSET, APT_CH_WIDTH, "Visible", Visible, (char *)apt_TempPalette);
}

// MCIR
if (CONTAINS(opts->type, MCIR))
ImageOut(opts, &img, APT_CHA_OFFSET, APT_CH_WIDTH, "MCIR", MCIR, NULL);

// Linear equalise
if(CONTAINS(opts->effects, Linear_Equalise)){
apt_linearEnhance(img.prow, img.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);


+ 2
- 141
src/pngio.c View File

@@ -27,121 +27,6 @@

#include "pngio.h"

int mapOverlay(char *filename, apt_rgb_t **crow, int nrow, int zenith, int MCIR) {
FILE *fp = fopen(filename, "rb");
if(!fp) {
error_noexit("Cannot open map");
return 0;
}

// Create reader
png_structp png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if(!png) {
fclose(fp);
return 0;
}
png_infop info = png_create_info_struct(png);
if(!info) {
fclose(fp);
return 0;
}
png_init_io(png, fp);

// Read info from header
png_read_info(png, info);
int width = png_get_image_width(png, info);
int height = png_get_image_height(png, info);
png_byte color_type = png_get_color_type(png, info);
png_byte bit_depth = png_get_bit_depth(png, info);

// Check the image
if(width != 1040){
error_noexit("Map must be 1040px wide");
return 0;
}else if(bit_depth != 16){
error_noexit("Map must be 16 bit color");
return 0;
}else if(color_type != PNG_COLOR_TYPE_RGB){
error_noexit("Map must be RGB");
return 0;
}else if(zenith > height/2 || nrow-zenith > height/2){
warning("Map is too short to cover entire image");
}

// Create row buffers
png_bytep *mapRows = NULL;
mapRows = (png_bytep *) malloc(sizeof(png_bytep) * height);
for(int y = 0; y < height; y++)
mapRows[y] = (png_byte *) malloc(png_get_rowbytes(png, info));

// Read image
png_read_image(png, mapRows);

// Tidy up
fclose(fp);
png_destroy_read_struct(&png, &info, NULL);

printf("Adding map overlay\n");

// Map overlay / MCIR / Precipitation
int mapOffset = (height/2)-zenith;
for(int y = 0; y < nrow; y++) {
for(int x = 49; x < width - 82; x++){
// Maps are 16 bit / channel
png_bytep px = &mapRows[CLIP(y + mapOffset, 0, height-1)][x * 6];
apt_rgb_t map = {
(px[0] << 8) | px[1],
(px[2] << 8) | px[3],
(px[4] << 8) | px[5]
};

// Pixel offsets
int chb = x + APT_CHB_OFFSET - 49;
int cha = x + 36;

// Fill in map
if(MCIR){
if(map.b < 128 && map.g > 128){
// Land
float darken = ((255-crow[y][chb].r)-100)/50;
float green = CLIP(map.g/300, 0, 1);
float blue = 0.15 - CLIP(map.b/960.0, 0, 1);
crow[y][cha] = (apt_rgb_t){blue*1000*darken, green*98*darken, blue*500.0*darken};
}else{
// Sea
crow[y][cha] = (apt_rgb_t){9, 17, 74};
}
}

// Color -> alpha: composite
int composite = map.r + map.g + map.b;
// Color -> alpha: flattern and convert to 8 bits / channel
float factor = (255 * 255 * 2.0) / composite;
map.r *= factor/257.0; map.g *= factor/257.0; map.b *= factor/257.0;
// Color -> alpha: convert black to alpha
float alpha = CLIP(composite / 65535.0, 0, 1);
// Clip
map.r = CLIP(map.r, 0, 255.0);
map.g = CLIP(map.g, 0, 255.0);
map.b = CLIP(map.b, 0, 255.0);

// Map overlay on channel A
crow[y][cha] = apt_RGBcomposite(map, alpha, crow[y][cha], 1);
// Map overlay on channel B
if(!MCIR)
crow[y][chb] = apt_RGBcomposite(map, alpha, crow[y][chb], 1);

// Cloud overlay on channel A
if(MCIR){
float cloud = CLIP((crow[y][chb].r - 113) / 90.0, 0, 1);
crow[y][cha] = apt_RGBcomposite((apt_rgb_t){255, 250, 245}, cloud, crow[y][cha], 1);
}
}
}

return 1;
}

int readRawImage(char *filename, float **prow, int *nrow) {
FILE *fp = fopen(filename, "rb");
printf("%s", filename);
@@ -210,14 +95,8 @@ int readRawImage(char *filename, float **prow, int *nrow) {
int readPalette(char *filename, apt_rgb_t **pixels) {
FILE *fp = fopen(filename, "rb");
if(!fp) {
char buffer[1024];
// PALETTE_DIR is set through CMake
sprintf(buffer, PALETTE_DIR"/%s", filename);
fp = fopen(buffer, "rb");
if(!fp){
error_noexit("Cannot open palette");
return 0;
}
error_noexit("Cannot open palette");
return 0;
}
// Create reader
@@ -334,9 +213,6 @@ int ImageOut(options_t *opts, apt_image_t *img, int offset, int width, char *des
case Temperature:
greyscale = 0;
break;
case MCIR:
greyscale = 0;
break;
case Raw_Image: break;
case Channel_A: break;
case Channel_B: break;
@@ -368,10 +244,6 @@ int ImageOut(options_t *opts, apt_image_t *img, int offset, int width, char *des
}
}

if(opts->map != NULL && opts->map[0] != '\0'){
greyscale = 0;
}

FILE *pngfile;

// Create writer
@@ -433,17 +305,6 @@ int ImageOut(options_t *opts, apt_image_t *img, int offset, int width, char *des
}
}

// Map stuff
if(opts->map != NULL && opts->map[0] != '\0'){
if(!mapOverlay(opts->map, crow, img->nrow, img->zenith+opts->mapOffset, CONTAINS(opts->type, MCIR))){
warning("Skipping MCIR generation");
return 0;
}
}else if(CONTAINS(opts->type, MCIR)){
warning("Skipping MCIR generation; no map provided");
return 0;
}

printf("Writing %s", outName);

// Float power macro (for gamma adjustment)


+ 0
- 1
src/pngio.h View File

@@ -1,7 +1,6 @@
#include "apt.h"
#include "common.h"

int mapOverlay(char *filename, apt_rgb_t **crow, int nrow, int zenith, int MCIR);
int readRawImage(char *filename, float **prow, int *nrow);
int readPalette(char *filename, apt_rgb_t **pixels);
void prow2crow(float **prow, int nrow, char *palette, apt_rgb_t **crow);


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