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/* picture.c
*
* Various funtions for saving/loading pictures.
* Copyright 2002 by Jeroen Vreeken (pe1rxq@amsat.org)
* Portions of this file are Copyright by Lionnel Maugis
* This software is distributed under the GNU public license version 2
* See also the file 'COPYING'.
*
*/
#include "picture.h"
#include "event.h"
#undef HAVE_STDLIB_H
#include <jpeglib.h>
#include <jerror.h>
/* The following declarations and 5 functions are jpeg related
* functions used by put_jpeg_grey_memory and put_jpeg_yuv420p_memory
*/
typedef struct {
struct jpeg_destination_mgr pub;
JOCTET *buf;
size_t bufsize;
size_t jpegsize;
} mem_destination_mgr;
typedef mem_destination_mgr *mem_dest_ptr;
METHODDEF(void) init_destination(j_compress_ptr cinfo)
{
mem_dest_ptr dest = (mem_dest_ptr) cinfo->dest;
dest->pub.next_output_byte = dest->buf;
dest->pub.free_in_buffer = dest->bufsize;
dest->jpegsize = 0;
}
METHODDEF(boolean) empty_output_buffer(j_compress_ptr cinfo)
{
mem_dest_ptr dest = (mem_dest_ptr) cinfo->dest;
dest->pub.next_output_byte = dest->buf;
dest->pub.free_in_buffer = dest->bufsize;
return FALSE;
ERREXIT(cinfo, JERR_BUFFER_SIZE);
}
METHODDEF(void) term_destination(j_compress_ptr cinfo)
{
mem_dest_ptr dest = (mem_dest_ptr) cinfo->dest;
dest->jpegsize = dest->bufsize - dest->pub.free_in_buffer;
}
static GLOBAL(void) _jpeg_mem_dest(j_compress_ptr cinfo, JOCTET* buf, size_t bufsize)
{
mem_dest_ptr dest;
if (cinfo->dest == NULL) {
cinfo->dest = (struct jpeg_destination_mgr *)
(*cinfo->mem->alloc_small)((j_common_ptr)cinfo, JPOOL_PERMANENT,
sizeof(mem_destination_mgr));
}
dest = (mem_dest_ptr) cinfo->dest;
dest->pub.init_destination = init_destination;
dest->pub.empty_output_buffer = empty_output_buffer;
dest->pub.term_destination = term_destination;
dest->buf = buf;
dest->bufsize = bufsize;
dest->jpegsize = 0;
}
static GLOBAL(int) _jpeg_mem_size(j_compress_ptr cinfo)
{
mem_dest_ptr dest = (mem_dest_ptr) cinfo->dest;
return dest->jpegsize;
}
/* put_jpeg_yuv420p_memory converts an input image in the YUV420P format into a jpeg image and puts
* it in a memory buffer.
* Inputs:
* - image_size is the size of the input image buffer.
* - input_image is the image in YUV420P format.
* - width and height are the dimensions of the image
* - quality is the jpeg encoding quality 0-100%
* Output:
* - dest_image is a pointer to the jpeg image buffer
* Returns buffer size of jpeg image
*/
static int put_jpeg_yuv420p_memory(unsigned char *dest_image, int image_size,
unsigned char *input_image, int width, int height, int quality)
{
int i, j, jpeg_image_size;
JSAMPROW y[16],cb[16],cr[16]; // y[2][5] = color sample of row 2 and pixel column 5; (one plane)
JSAMPARRAY data[3]; // t[0][2][5] = color sample 0 of row 2 and column 5
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
data[0] = y;
data[1] = cb;
data[2] = cr;
cinfo.err = jpeg_std_error(&jerr); // errors get written to stderr
jpeg_create_compress(&cinfo);
cinfo.image_width = width;
cinfo.image_height = height;
cinfo.input_components = 3;
jpeg_set_defaults (&cinfo);
jpeg_set_colorspace(&cinfo, JCS_YCbCr);
cinfo.raw_data_in = TRUE; // supply downsampled data
#if JPEG_LIB_VERSION >= 70
#warning using JPEG_LIB_VERSION >= 70
cinfo.do_fancy_downsampling = FALSE; // fix segfaulst with v7
#endif
cinfo.comp_info[0].h_samp_factor = 2;
cinfo.comp_info[0].v_samp_factor = 2;
cinfo.comp_info[1].h_samp_factor = 1;
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1;
cinfo.comp_info[2].v_samp_factor = 1;
jpeg_set_quality(&cinfo, quality, TRUE);
cinfo.dct_method = JDCT_FASTEST;
_jpeg_mem_dest(&cinfo, dest_image, image_size); // data written to mem
jpeg_start_compress (&cinfo, TRUE);
for (j = 0; j < height; j += 16) {
for (i = 0; i < 16; i++) {
y[i] = input_image + width * (i + j);
if (i%2 == 0) {
cb[i/2] = input_image + width * height + width / 2 * ((i + j) / 2);
cr[i/2] = input_image + width * height + width * height / 4 + width / 2 * ((i + j) / 2);
}
}
jpeg_write_raw_data(&cinfo, data, 16);
}
jpeg_finish_compress(&cinfo);
jpeg_image_size = _jpeg_mem_size(&cinfo);
jpeg_destroy_compress(&cinfo);
return jpeg_image_size;
}
/* put_jpeg_grey_memory converts an input image in the grayscale format into a jpeg image
* Inputs:
* - image_size is the size of the input image buffer.
* - input_image is the image in grayscale format.
* - width and height are the dimensions of the image
* - quality is the jpeg encoding quality 0-100%
* Output:
* - dest_image is a pointer to the jpeg image buffer
* Returns buffer size of jpeg image
*/
static int put_jpeg_grey_memory(unsigned char *dest_image, int image_size,
unsigned char *input_image, int width, int height, int quality)
{
int y, dest_image_size;
JSAMPROW row_ptr[1];
struct jpeg_compress_struct cjpeg;
struct jpeg_error_mgr jerr;
cjpeg.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cjpeg);
cjpeg.image_width = width;
cjpeg.image_height = height;
cjpeg.input_components = 1; /* one colour component */
cjpeg.in_color_space = JCS_GRAYSCALE;
jpeg_set_defaults(&cjpeg);
jpeg_set_quality(&cjpeg, quality, TRUE);
cjpeg.dct_method = JDCT_FASTEST;
_jpeg_mem_dest(&cjpeg, dest_image, image_size); // data written to mem
jpeg_start_compress (&cjpeg, TRUE);
row_ptr[0] = input_image;
for (y = 0; y < height; y++) {
jpeg_write_scanlines(&cjpeg, row_ptr, 1);
row_ptr[0] += width;
}
jpeg_finish_compress(&cjpeg);
dest_image_size = _jpeg_mem_size(&cjpeg);
jpeg_destroy_compress(&cjpeg);
return dest_image_size;
}
/* put_jpeg_yuv420p_file converts an YUV420P coded image to a jpeg image and writes
* it to an already open file.
* Inputs:
* - image is the image in YUV420P format.
* - width and height are the dimensions of the image
* - quality is the jpeg encoding quality 0-100%
* Output:
* - The jpeg is written directly to the file given by the file pointer fp
* Returns nothing
*/
static void put_jpeg_yuv420p_file(FILE *fp, unsigned char *image, int width,
int height, int quality)
{
int i,j;
JSAMPROW y[16],cb[16],cr[16]; // y[2][5] = color sample of row 2 and pixel column 5; (one plane)
JSAMPARRAY data[3]; // t[0][2][5] = color sample 0 of row 2 and column 5
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
data[0] = y;
data[1] = cb;
data[2] = cr;
cinfo.err = jpeg_std_error(&jerr); // errors get written to stderr
jpeg_create_compress(&cinfo);
cinfo.image_width = width;
cinfo.image_height = height;
cinfo.input_components = 3;
jpeg_set_defaults(&cinfo);
jpeg_set_colorspace(&cinfo, JCS_YCbCr);
cinfo.raw_data_in = TRUE; // supply downsampled data
#if JPEG_LIB_VERSION >= 70
#warning using JPEG_LIB_VERSION >= 70
cinfo.do_fancy_downsampling = FALSE; // fix segfaulst with v7
#endif
cinfo.comp_info[0].h_samp_factor = 2;
cinfo.comp_info[0].v_samp_factor = 2;
cinfo.comp_info[1].h_samp_factor = 1;
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1;
cinfo.comp_info[2].v_samp_factor = 1;
jpeg_set_quality(&cinfo, quality, TRUE);
cinfo.dct_method = JDCT_FASTEST;
jpeg_stdio_dest(&cinfo, fp); // data written to file
jpeg_start_compress(&cinfo, TRUE);
for (j = 0; j < height; j += 16) {
for (i = 0; i < 16; i++) {
y[i] = image + width * (i + j);
if (i % 2 == 0) {
cb[i / 2] = image + width * height + width / 2 * ((i + j) / 2);
cr[i / 2] = image + width * height + width * height / 4 + width / 2 * ((i + j) /2);
}
}
jpeg_write_raw_data(&cinfo, data, 16);
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
/* put_jpeg_grey_file converts an greyscale image to a jpeg image and writes
* it to an already open file.
* Inputs:
* - image is the image in greyscale format.
* - width and height are the dimensions of the image
* - quality is the jpeg encoding quality 0-100%
* Output:
* - The jpeg is written directly to the file given by the file pointer fp
* Returns nothing
*/
static void put_jpeg_grey_file(FILE *picture, unsigned char *image, int width, int height, int quality)
{
int y;
JSAMPROW row_ptr[1];
struct jpeg_compress_struct cjpeg;
struct jpeg_error_mgr jerr;
cjpeg.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cjpeg);
cjpeg.image_width = width;
cjpeg.image_height = height;
cjpeg.input_components = 1; /* one colour component */
cjpeg.in_color_space = JCS_GRAYSCALE;
jpeg_set_defaults(&cjpeg);
jpeg_set_quality(&cjpeg, quality, TRUE);
cjpeg.dct_method = JDCT_FASTEST;
jpeg_stdio_dest(&cjpeg, picture);
jpeg_start_compress(&cjpeg, TRUE);
row_ptr[0] = image;
for (y = 0; y < height; y++) {
jpeg_write_scanlines(&cjpeg, row_ptr, 1);
row_ptr[0] += width;
}
jpeg_finish_compress(&cjpeg);
jpeg_destroy_compress(&cjpeg);
}
/* put_ppm_bgr24_file converts an greyscale image to a PPM image and writes
* it to an already open file.
* Inputs:
* - image is the image in YUV420P format.
* - width and height are the dimensions of the image
* Output:
* - The PPM is written directly to the file given by the file pointer fp
* Returns nothing
*/
static void put_ppm_bgr24_file(FILE *picture, unsigned char *image, int width, int height)
{
int x, y;
unsigned char *l = image;
unsigned char *u = image + width * height;
unsigned char *v = u + (width * height) / 4;
int r, g, b;
int warningkiller;
unsigned char rgb[3];
/* ppm header
* width height
* maxval
*/
fprintf(picture, "P6\n");
fprintf(picture, "%d %d\n", width, height);
fprintf(picture, "%d\n", 255);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
r = 76283* (((int)*l) - 16) + 104595 * (((int)*u) - 128);
g = 76283* (((int)*l) - 16)- 53281 * (((int)*u) - 128)-25625*(((int)*v)-128);
b = 76283* (((int)*l) - 16) + 132252 * (((int)*v) - 128);
r = r>>16;
g = g>>16;
b = b>>16;
if (r < 0)
r = 0;
else if (r > 255)
r = 255;
if (g < 0)
g = 0;
else if (g > 255)
g = 255;
if (b < 0)
b = 0;
else if (b > 255)
b = 255;
rgb[0] = b;
rgb[1] = g;
rgb[2] = r;
l++;
if (x & 1) {
u++;
v++;
}
/* ppm is rgb not bgr */
warningkiller = fwrite(rgb, 1, 3, picture);
}
if (y & 1) {
u -= width / 2;
v -= width / 2;
}
}
}
/* copy smartmask as an overlay into motion images and movies */
void overlay_smartmask(struct context *cnt, unsigned char *out)
{
int i, x, v, width, height, line;
struct images *imgs = &cnt->imgs;
unsigned char *smartmask = imgs->smartmask_final;
unsigned char *out_y, *out_u, *out_v;
i = imgs->motionsize;
v = i + ((imgs->motionsize) / 4);
width = imgs->width;
height = imgs->height;
/* set V to 255 to make smartmask appear red */
out_v = out + v;
out_u = out + i;
for (i = 0; i < height; i += 2){
line = i * width;
for (x = 0; x < width; x += 2){
if (smartmask[line + x] == 0 ||
smartmask[line + x + 1] == 0 ||
smartmask[line + width + x] == 0 ||
smartmask[line + width + x + 1] == 0){
*out_v = 255;
*out_u = 128;
}
out_v++;
out_u++;
}
}
out_y = out;
/* set colour intensity for smartmask */
for (i = 0; i < imgs->motionsize; i++){
if (smartmask[i] == 0)
*out_y = 0;
out_y++;
}
}
/* copy fixed mask as an overlay into motion images and movies */
void overlay_fixed_mask(struct context *cnt, unsigned char *out)
{
int i;
struct images *imgs = &cnt->imgs;
unsigned char *motion_img = imgs->out;
unsigned char *mask = imgs->mask;
int pixel;
/* set y to mask + motion-pixel to keep motion pixels visible on grey background*/
for (i = 0; i < imgs->motionsize; i++){
pixel = 255 - mask[i] + motion_img[i];
if (pixel > 255)
*out = 255;
else
*out = pixel;
out++;
}
}
/* copy largest label as an overlay into motion images and movies */
void overlay_largest_label(struct context *cnt, unsigned char *out)
{
int i, x, v, width, height, line;
struct images *imgs = &cnt->imgs;
int *labels = imgs->labels;
unsigned char *out_y, *out_u, *out_v;
i = imgs->motionsize;
v = i + ((imgs->motionsize) / 4);
width = imgs->width;
height = imgs->height;
/* set U to 255 to make label appear blue */
out_u = out + i;
out_v = out + v;
for (i = 0; i < height; i += 2){
line = i * width;
for (x = 0; x < width; x += 2){
if (labels[line + x] & 32768 ||
labels[line + x + 1] & 32768 ||
labels[line + width + x] & 32768 ||
labels[line + width + x + 1] & 32768) {
*out_u = 255;
*out_v = 128;
}
out_u++;
out_v++;
}
}
out_y = out;
/* set intensity for coloured label to have better visibility */
for (i = 0; i < imgs->motionsize; i++) {
if (*labels++ & 32768)
*out_y = 0;
out_y++;
}
}
/* put_picture_mem is used for the webcam feature. Depending on the image type
* (colour YUV420P or greyscale) the corresponding put_jpeg_X_memory function is called.
* Inputs:
* - cnt is the global context struct and only cnt->imgs.type is used.
* - image_size is the size of the input image buffer
* - *image points to the image buffer that contains the YUV420P or Grayscale image about to be put
* - quality is the jpeg quality setting from the config file.
* Output:
* - **dest_image is a pointer to a pointer that points to the destination buffer in which the
* converted image it put
* Function returns the dest_image_size if successful. Otherwise 0.
*/
int put_picture_memory(struct context *cnt, unsigned char* dest_image, int image_size,
unsigned char *image, int quality)
{
switch (cnt->imgs.type) {
case VIDEO_PALETTE_YUV420P:
return put_jpeg_yuv420p_memory(dest_image, image_size, image,
cnt->imgs.width, cnt->imgs.height, quality);
case VIDEO_PALETTE_GREY:
return put_jpeg_grey_memory(dest_image, image_size, image,
cnt->imgs.width, cnt->imgs.height, quality);
default:
motion_log(LOG_ERR, 0, "Unknow image type %d", cnt->imgs.type);
}
return 0;
}
void put_picture_fd(struct context *cnt, FILE *picture, unsigned char *image, int quality)
{
if (cnt->conf.ppm) {
put_ppm_bgr24_file(picture, image, cnt->imgs.width, cnt->imgs.height);
} else {
switch (cnt->imgs.type) {
case VIDEO_PALETTE_YUV420P:
put_jpeg_yuv420p_file(picture, image, cnt->imgs.width, cnt->imgs.height, quality);
break;
case VIDEO_PALETTE_GREY:
put_jpeg_grey_file(picture, image, cnt->imgs.width, cnt->imgs.height, quality);
break;
default :
motion_log(LOG_ERR, 0, "Unknow image type %d", cnt->imgs.type);
}
}
}
void put_picture(struct context *cnt, char *file, unsigned char *image, int ftype)
{
FILE *picture;
picture = myfopen(file, "w");
if (!picture) {
/* Report to syslog - suggest solution if the problem is access rights to target dir */
if (errno == EACCES) {
motion_log(LOG_ERR, 1,
"Can't write picture to file %s - check access rights to target directory", file);
motion_log(LOG_ERR, 1, "Thread is going to finish due to this fatal error");
cnt->finish = 1;
cnt->restart = 0;
return;
} else {
/* If target dir is temporarily unavailable we may survive */
motion_log(LOG_ERR, 1, "Can't write picture to file %s", file);
return;
}
}
put_picture_fd(cnt, picture, image, cnt->conf.quality);
fclose(picture);
event(cnt, EVENT_FILECREATE, NULL, file, (void *)(unsigned long)ftype, NULL);
}
/* Get the pgm file used as fixed mask */
unsigned char *get_pgm(FILE *picture, int width, int height)
{
int x = 0 ,y = 0, maxval;
char line[256];
unsigned char *image;
line[255]=0;
if (!fgets(line, 255, picture)) {
motion_log(LOG_ERR, 1, "Could not read from ppm file");
return NULL;
}
if (strncmp(line, "P5", 2)) {
motion_log(LOG_ERR, 1, "This is not a ppm file, starts with '%s'", line);
return NULL;
}
/* skip comment */
line[0] = '#';
while (line[0] == '#')
if (!fgets(line, 255, picture))
return NULL;
/* check size */
if (sscanf(line, "%d %d", &x, &y) != 2) {
motion_log(LOG_ERR, 1, "Failed reading size in pgm file");
return NULL;
}
if (x != width || y != height) {
motion_log(LOG_ERR, 1, "Wrong image size %dx%d should be %dx%d", x, y, width, height);
return NULL;
}
/* Maximum value */
line[0] = '#';
while (line[0] == '#')
if (!fgets(line, 255, picture))
return NULL;
if (sscanf(line, "%d", &maxval) != 1) {
motion_log(LOG_ERR, 1, "Failed reading maximum value in pgm file");
return NULL;
}
/* read data */
image = mymalloc(width * height);
for (y = 0; y < height; y++) {
if ((int)fread(&image[y * width], 1, width, picture) != width)
motion_log(LOG_ERR, 1, "Failed reading image data from pgm file");
for (x = 0; x < width; x++)
image[y * width + x] = (int)image[y * width + x] * 255 / maxval;
}
return image;
}
/* If a mask file is asked for but does not exist this function
* creates an empty mask file in the right binary pgm format and
* and the right size - easy to edit with Gimp or similar tool.
*/
void put_fixed_mask(struct context *cnt, const char *file)
{
FILE *picture;
picture = myfopen(file, "w");
if (!picture) {
/* Report to syslog - suggest solution if the problem is access rights to target dir */
if (errno == EACCES) {
motion_log(LOG_ERR, 1,
"can't write mask file %s - check access rights to target directory", file);
} else {
/* If target dir is temporarily unavailable we may survive */
motion_log(LOG_ERR, 1, "can't write mask file %s", file);
}
return;
}
memset(cnt->imgs.out, 255, cnt->imgs.motionsize); /* initialize to unset */
/* Write pgm-header */
fprintf(picture, "P5\n");
fprintf(picture, "%d %d\n", cnt->conf.width, cnt->conf.height);
fprintf(picture, "%d\n", 255);
/* write pgm image data at once */
if ((int)fwrite(cnt->imgs.out, cnt->conf.width, cnt->conf.height, picture) != cnt->conf.height) {
motion_log(LOG_ERR, 1, "Failed writing default mask as pgm file");
return;
}
fclose(picture);
motion_log(LOG_ERR, 0, "Creating empty mask %s",cnt->conf.mask_file);
motion_log(LOG_ERR, 0, "Please edit this file and re-run motion to enable mask feature");
}
/* save preview_shot */
void preview_save(struct context *cnt)
{
#ifdef HAVE_FFMPEG
int use_jpegpath;
int basename_len;
#endif /* HAVE_FFMPEG */
const char *jpegpath;
char previewname[PATH_MAX];
char filename[PATH_MAX];
struct image_data *saved_current_image;
if (cnt->imgs.preview_image.diffs) {
/* Save current global context */
saved_current_image = cnt->current_image;
/* Set global context to the image we are processing */
cnt->current_image = &cnt->imgs.preview_image;
#ifdef HAVE_FFMPEG
/* Use filename of movie i.o. jpeg_filename when set to 'preview' */
use_jpegpath = strcmp(cnt->conf.jpegpath, "preview");
if (cnt->ffmpeg_new && !use_jpegpath) {
/* Replace avi/mpg with jpg/ppm and keep the rest of the filename */
basename_len = strlen(cnt->newfilename) - 3;
strncpy(previewname, cnt->newfilename, basename_len);
previewname[basename_len] = '\0';
strcat(previewname, imageext(cnt));
put_picture(cnt, previewname, cnt->imgs.preview_image.image , FTYPE_IMAGE);
} else
#endif /* HAVE_FFMPEG */
{
/* Save best preview-shot also when no movies are recorded or jpegpath
* is used. Filename has to be generated - nothing available to reuse! */
//printf("preview_shot: different filename or picture only!\n");
/* conf.jpegpath would normally be defined but if someone deleted it by control interface
* it is better to revert to the default than fail */
if (cnt->conf.jpegpath)
jpegpath = cnt->conf.jpegpath;
else
jpegpath = (char *)DEF_JPEGPATH;
mystrftime(cnt, filename, sizeof(filename), jpegpath, &cnt->imgs.preview_image.timestamp_tm, NULL, 0);
snprintf(previewname, PATH_MAX, "%s/%s.%s", cnt->conf.filepath, filename, imageext(cnt));
put_picture(cnt, previewname, cnt->imgs.preview_image.image, FTYPE_IMAGE);
}
/* restore global context values */
cnt->current_image = saved_current_image;
}
}
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