--- CV/CV.xs 2003/11/02 12:55:41 1.1 +++ CV/CV.xs 2017/12/23 04:11:49 1.51 @@ -2,8 +2,868 @@ #include "perl.h" #include "XSUB.h" -MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow +#include +#include +#include + +#include + +#include +#include +#include +#include +#include + +#include +#include + +#include + +#if WEBP +#include +#endif + +#include "perlmulticore.h" + +#define IW 80 /* MUST match Schnauzer.pm! */ +#define IH 60 /* MUST match Schnauzer.pm! */ + +#define RAND (seed = (seed + 7141) * 54773 % 134456) + +#define LINELENGTH 240 + +#define ELLIPSIS "\xe2\x80\xa6" + +typedef char *octet_string; + +static magic_t magic_cookie[2]; /* !mime, mime */ + +struct jpg_err_mgr +{ + struct jpeg_error_mgr err; + jmp_buf setjmp_buffer; +}; + +static void +cv_error_exit (j_common_ptr cinfo) +{ + cinfo->err->output_message (cinfo); + longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); +} + +static void +cv_error_output (j_common_ptr cinfo) +{ + char msg[JMSG_LENGTH_MAX]; + + cinfo->err->format_message (cinfo, msg); + + fprintf (stderr, "JPEG decoding error: %s\n", msg); + return; +} + +static void +rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, + unsigned int *h, unsigned int *s, unsigned int *v) +{ + unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; + unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; + unsigned int delta = mx - mn; + + *v = mx; + + *s = mx ? delta * 255 / mx : 0; + + if (delta == 0) + *h = 0; + else + { + if (r == mx) + *h = ((int)g - (int)b) * 255 / (int)(delta * 3); + else if (g == mx) + *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; + else if (b == mx) + *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; + + *h &= 255; + } +} + +struct feature { + float v1, v2, v3; // mean, square, cube + int n; +}; + +static void +feature_init (struct feature *f) +{ + f->v1 = 0.; + f->v2 = 0.; + f->v3 = 0.; + f->n = 0; +} + +// didn't find an algorithm to neatly do mean, variance and skew in one pass. +// elmex ist schuld. +static void +feature_update_pass_1 (struct feature *f, unsigned int v) +{ + f->v1 += v; + f->n += 1; +} + +static void +feature_finish_pass_1 (struct feature *f) +{ + if (f->n < 1) + return; + + f->v1 /= f->n; +} + +static void +feature_update_pass_2 (struct feature *f, unsigned int v) +{ + float d = v - f->v1; + + f->v2 += d * d; + f->v3 += d * d * d; +} + +static void +feature_finish_pass_2 (struct feature *f) +{ + if (f->n < 1) + return; + + f->v2 /= f->n; + f->v3 /= f->n; + + f->v1 /= 255.; + f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); + f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); +} + +static guint32 a85_val; +static guint a85_cnt; +static guchar a85_buf[LINELENGTH], *a85_ptr; + +static void +a85_init (void) +{ + a85_cnt = 4; + a85_ptr = a85_buf; +} + +static void +a85_push (PerlIO *fp, guchar c) +{ + a85_val = a85_val << 8 | c; + + if (!--a85_cnt) + { + a85_cnt = 4; + if (a85_val) + { + a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; + a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; + a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; + a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; + a85_ptr[0] = (a85_val ) + 33; + + a85_ptr += 5; + } + else + *a85_ptr++ = 'z'; + + if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) + { + *a85_ptr++ = '\n'; + PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); + a85_ptr = a85_buf; + } + } + +} + +static void +a85_finish (PerlIO *fp) +{ + while (a85_cnt != 4) + a85_push (fp, 0); + + *a85_ptr++ = '~'; // probably buggy end-marker + *a85_ptr++ = '>'; // probably buggy end-marker + *a85_ptr++ = '\n'; + + PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); +} + +///////////////////////////////////////////////////////////////////////////// + +MODULE = Gtk2::CV PACKAGE = Gtk2::CV PROTOTYPES: ENABLE +# missing function in perl. really :) +int +common_prefix_length (a, b) + unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); + unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); + CODE: + RETVAL = 0; + + while (*a == *b && *a) + { + RETVAL += (*a & 0xc0) != 0x80; + a++, b++; + } + + OUTPUT: + RETVAL + +const char * +magic (SV *path_or_data) + ALIAS: + magic = 0 + magic_mime = 1 + magic_buffer = 2 + magic_buffer_mime = 3 + CODE: +{ + STRLEN len; + char *data = SvPVbyte (path_or_data, len); + + perlinterp_release (); + + if (!magic_cookie[0]) + { + magic_cookie[0] = magic_open (MAGIC_SYMLINK); + magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME); + } + + RETVAL = ix & 2 + ? magic_buffer (magic_cookie[ix], data, len) + : magic_file (magic_cookie[ix], data); + + perlinterp_acquire (); +} + OUTPUT: + RETVAL + +# missing/broken in Gtk2 perl module + +void +gdk_window_clear_hints (GdkWindow *window) + CODE: + gdk_window_set_geometry_hints (window, 0, 0); + +gboolean +gdk_net_wm_supports (GdkAtom property) + CODE: +#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) + RETVAL = gdk_net_wm_supports (property); +#else + RETVAL = 0; +#endif + OUTPUT: + RETVAL + +GdkPixbuf_noinc * +dealpha_expose (GdkPixbuf *pb) + CODE: + perlinterp_release (); +{ + int w = gdk_pixbuf_get_width (pb); + int h = gdk_pixbuf_get_height (pb); + int bpp = gdk_pixbuf_get_n_channels (pb); + int x, y, i; + guchar *src = gdk_pixbuf_get_pixels (pb), *dst; + int sstr = gdk_pixbuf_get_rowstride (pb), dstr; + + RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); + + dst = gdk_pixbuf_get_pixels (RETVAL); + dstr = gdk_pixbuf_get_rowstride (RETVAL); + + for (x = 0; x < w; x++) + for (y = 0; y < h; y++) + for (i = 0; i < 3; i++) + dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; +} + perlinterp_acquire (); + OUTPUT: + RETVAL + +GdkPixbuf_noinc * +rotate (GdkPixbuf *pb, int angle) + CODE: + perlinterp_release (); + if (angle < 0) + angle += 360; + RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE + : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE + : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN + : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE + : angle); + perlinterp_acquire (); + OUTPUT: + RETVAL + +GdkPixbuf_noinc * +decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) + CODE: +{ +#if WEBP + guchar *data; + STRLEN data_size; + int alpha; + WebPDecoderConfig config; + int inw, inh; + + data = SvPVbyte (image_data, data_size); + + perlinterp_release (); + + RETVAL = 0; + + if (!WebPInitDecoderConfig (&config)) + goto err; + + config.options.use_threads = 1; + + if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK) + goto err; + + inw = config.input.width; + inh = config.input.height; + + if (thumbnail) + { + if (inw * ih > inh * iw) + ih = (iw * inh + inw - 1) / inw; + else + iw = (ih * inw + inh - 1) / inh; + + config.options.bypass_filtering = 1; + config.options.no_fancy_upsampling = 1; + + config.options.use_scaling = 1; + config.options.scaled_width = iw; + config.options.scaled_height = ih; + } + else + { + iw = inw; + ih = inh; + } + + alpha = config.input.has_alpha; + + RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih); + if (!RETVAL) + goto err; + + config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; + config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); + config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); + config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); + config.output.is_external_memory = 1; + + if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK) + { + g_object_unref (RETVAL); + RETVAL = 0; + goto err; + } + + err: + perlinterp_acquire (); +#else + croak ("load_webp: webp not enabled at compile time"); +#endif +} + OUTPUT: + RETVAL + +GdkPixbuf_noinc * +load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) + CODE: +{ + struct jpeg_decompress_struct cinfo; + struct jpg_err_mgr jerr; + guchar *data; + int rs; + FILE *fp; + volatile GdkPixbuf *pb = 0; + + RETVAL = 0; + + fp = fopen (SvPVbyte_nolen (path), "rb"); + + if (!fp) + XSRETURN_UNDEF; + + perlinterp_release (); + + cinfo.err = jpeg_std_error (&jerr.err); + + jerr.err.error_exit = cv_error_exit; + jerr.err.output_message = cv_error_output; + + if ((rs = setjmp (jerr.setjmp_buffer))) + { + fclose (fp); + jpeg_destroy_decompress (&cinfo); + + if (pb) + g_object_unref ((gpointer)pb); + + perlinterp_acquire (); + XSRETURN_UNDEF; + } + + jpeg_create_decompress (&cinfo); + + jpeg_stdio_src (&cinfo, fp); + jpeg_read_header (&cinfo, TRUE); + + cinfo.dct_method = JDCT_DEFAULT; + cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ + cinfo.do_block_smoothing = FALSE; + cinfo.out_color_space = JCS_RGB; + cinfo.quantize_colors = FALSE; + + cinfo.scale_num = 1; + cinfo.scale_denom = 1; + + jpeg_calc_output_dimensions (&cinfo); + + if (thumbnail) + { + cinfo.dct_method = JDCT_FASTEST; + cinfo.do_fancy_upsampling = FALSE; + + while (cinfo.scale_denom < 8 + && cinfo.output_width >= iw*4 + && cinfo.output_height >= ih*4) + { + cinfo.scale_denom <<= 1; + jpeg_calc_output_dimensions (&cinfo); + } + } + + if (cinfo.output_components != 3) + longjmp (jerr.setjmp_buffer, 3); + + if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) + { + cinfo.out_color_space = JCS_CMYK; + cinfo.output_components = 4; + } + + pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); + if (!RETVAL) + longjmp (jerr.setjmp_buffer, 2); + + data = gdk_pixbuf_get_pixels (RETVAL); + rs = gdk_pixbuf_get_rowstride (RETVAL); + + jpeg_start_decompress (&cinfo); + + while (cinfo.output_scanline < cinfo.output_height) + { + int remaining = cinfo.output_height - cinfo.output_scanline; + JSAMPROW rp[4]; + + rp [0] = data + cinfo.output_scanline * rs; + rp [1] = (guchar *)rp [0] + rs; + rp [2] = (guchar *)rp [1] + rs; + rp [3] = (guchar *)rp [2] + rs; + + jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); + } + + if (cinfo.out_color_space == JCS_CMYK) + { + guchar *end = data + cinfo.output_height * rs; + + while (data < end) + { + U32 c = data [0]; + U32 m = data [1]; + U32 y = data [2]; + U32 k = data [3]; + + if (0) + if (cinfo.Adobe_transform == 2) + { + c ^= 0xff; + m ^= 0xff; + y ^= 0xff; + k ^= 0xff; + } + + data [0] = (c * k + 0x80) / 0xff; + data [1] = (m * k + 0x80) / 0xff; + data [2] = (y * k + 0x80) / 0xff; + data [3] = 0xff; + + data += 4; + } + } + + jpeg_finish_decompress (&cinfo); + fclose (fp); + jpeg_destroy_decompress (&cinfo); + perlinterp_acquire (); +} + OUTPUT: + RETVAL + +void +compare (GdkPixbuf *a, GdkPixbuf *b) + PPCODE: + perlinterp_release (); +{ + int w = gdk_pixbuf_get_width (a); + int h = gdk_pixbuf_get_height (a); + + int sa = gdk_pixbuf_get_rowstride (a); + int sb = gdk_pixbuf_get_rowstride (b); + + guchar *pa = gdk_pixbuf_get_pixels (a); + guchar *pb = gdk_pixbuf_get_pixels (b); + + int x, y; + + assert (w == gdk_pixbuf_get_width (b)); + assert (h == gdk_pixbuf_get_height (b)); + + assert (gdk_pixbuf_get_n_channels (a) == 3); + assert (gdk_pixbuf_get_n_channels (b) == 3); + + double diff = 0.; + int peak = 0; + + if (w && h) + for (y = 0; y < h; y++) + { + guchar *pa_ = pa + y * sa; + guchar *pb_ = pb + y * sb; + + for (x = 0; x < w; x++) + { + int d; + + d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); + d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); + d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); + } + } + + perlinterp_acquire (); + + EXTEND (SP, 2); + PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); + PUSHs (sv_2mortal (newSVnv (peak / 255.))); +} + +############################################################################# + +MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer + +# currently only works for filenames (octet strings) + +SV * +foldcase (SV *pathsv) + PROTOTYPE: $ + CODE: +{ + STRLEN plen; + U8 *path = (U8 *)SvPV (pathsv, plen); + U8 *pend = path + plen; + U8 dst [plen * 6 * 3], *dstp = dst; + + while (path < pend) + { + U8 ch = *path; + + if (ch >= 'a' && ch <= 'z') + *dstp++ = *path++; + else if (ch >= 'A' && ch <= 'Z') + *dstp++ = *path++ + ('a' - 'A'); + else if (ch >= '0' && ch <= '9') + { + STRLEN el, nl = 0; + while (*path >= '0' && *path <= '9' && path < pend) + path++, nl++; + + for (el = nl; el < 6; el++) + *dstp++ = '0'; + + memcpy (dstp, path - nl, nl); + dstp += nl; + } + else + *dstp++ = *path++; +#if 0 + else + { + STRLEN cl; + to_utf8_fold (path, dstp, &cl); + dstp += cl; + path += is_utf8_char (path); + } +#endif + } + + RETVAL = newSVpvn ((const char *)dst, dstp - dst); +} + OUTPUT: + RETVAL + +GdkPixbuf_noinc * +p7_to_pb (int w, int h, SV *src_sv) + PROTOTYPE: @ + CODE: +{ + int x, y; + guchar *dst, *d; + int dstr; + guchar *src = (guchar *)SvPVbyte_nolen (src_sv); + + RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); + dst = gdk_pixbuf_get_pixels (RETVAL); + dstr = gdk_pixbuf_get_rowstride (RETVAL); + + for (y = 0; y < h; y++) + for (d = dst + y * dstr, x = 0; x < w; x++) + { + *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; + *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; + *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; + + src++; + } +} + OUTPUT: + RETVAL + +############################################################################# + +MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript + +void +dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) + CODE: +{ + int w = gdk_pixbuf_get_width (pb); + int h = gdk_pixbuf_get_height (pb); + int x, y, i; + guchar *dst; + int bpp = gdk_pixbuf_get_n_channels (pb); + guchar *src = gdk_pixbuf_get_pixels (pb); + int sstr = gdk_pixbuf_get_rowstride (pb); + + a85_init (); + + for (y = 0; y < h; y++) + for (x = 0; x < w; x++) + for (i = 0; i < (bpp < 3 ? 1 : 3); i++) + a85_push (fp, src [x * bpp + y * sstr + i]); + + a85_finish (fp); +} + +void +dump_binary (PerlIO *fp, GdkPixbuf *pb) + CODE: +{ + int w = gdk_pixbuf_get_width (pb); + int h = gdk_pixbuf_get_height (pb); + int x, y, i; + guchar *dst; + int bpp = gdk_pixbuf_get_n_channels (pb); + guchar *src = gdk_pixbuf_get_pixels (pb); + int sstr = gdk_pixbuf_get_rowstride (pb); + + for (y = 0; y < h; y++) + for (x = 0; x < w; x++) + for (i = 0; i < (bpp < 3 ? 1 : 3); i++) + PerlIO_putc (fp, src [x * bpp + y * sstr + i]); +} + +############################################################################# + +MODULE = Gtk2::CV PACKAGE = Gtk2::CV + +SV * +pb_to_hv84 (GdkPixbuf *pb) + CODE: +{ + int w = gdk_pixbuf_get_width (pb); + int h = gdk_pixbuf_get_height (pb); + int x, y; + guchar *dst; + int bpp = gdk_pixbuf_get_n_channels (pb); + guchar *src = gdk_pixbuf_get_pixels (pb); + int sstr = gdk_pixbuf_get_rowstride (pb); + + RETVAL = newSV (6 * 8 * 12 / 8); + SvPOK_only (RETVAL); + SvCUR_set (RETVAL, 6 * 8 * 12 / 8); + + dst = (guchar *)SvPVX (RETVAL); + + /* some primitive error distribution + random dithering */ + + for (y = 0; y < h; y++) + { + guchar *p = src + y * sstr; + + for (x = 0; x < w; x += 2) + { + unsigned int r, g, b, h, s, v, H, V1, V2; + + if (bpp == 3) + r = *p++, g = *p++, b = *p++; + else if (bpp == 1) + r = g = b = *p++; + else + abort (); + + rgb_to_hsv (r, g, b, &h, &s, &v); + + H = (h * 15 / 255) << 4; + V1 = v; + + if (bpp == 3) + r = *p++, g = *p++, b = *p++; + else if (bpp == 1) + r = g = b = *p++; + else + abort (); + + rgb_to_hsv (r, g, b, &h, &s, &v); + + H |= h * 15 / 255; + V2 = v; + + *dst++ = H; + *dst++ = V1; + *dst++ = V2; + } + } +} + OUTPUT: + RETVAL + +SV * +hv84_to_av (unsigned char *hv84) + CODE: +{ + int i = 72 / 3; + AV *av = newAV (); + + RETVAL = (SV *)newRV_noinc ((SV *)av); + while (i--) + { + int h = *hv84++; + int v1 = *hv84++; + int v2 = *hv84++; + + av_push (av, newSViv (v1)); + av_push (av, newSViv ((h >> 4) * 255 / 15)); + av_push (av, newSViv (v2)); + av_push (av, newSViv ((h & 15) * 255 / 15)); + } +} + OUTPUT: + RETVAL + +############################################################################# + +MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster + +SV * +extract_features (SV *ar) + CODE: +{ + int i; + AV *av, *result; + + if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) + croak ("Not an array ref as first argument to extract_features"); + + av = (AV *) SvRV (ar); + result = newAV (); + + for (i = 0; i <= av_len (av); ++i) + { + SV *sv = *av_fetch (av, i, 1); + SV *histsv = newSV (9 * sizeof (float) + 1); + + SvPOK_on (histsv); + SvCUR_set (histsv, 9 * sizeof (float)); + float *hist = (float *)SvPVX (histsv); + + struct feature f_h, f_s, f_v; + feature_init (&f_h); + feature_init (&f_s); + feature_init (&f_v); + + { + STRLEN len; + unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); + while (len >= 3) + { + unsigned int r, g, b, h, s, v; + r = *buf++; g = *buf++; b = *buf++; + rgb_to_hsv (r, g, b, &h, &s, &v); + + feature_update_pass_1 (&f_h, h); + feature_update_pass_1 (&f_s, s); + feature_update_pass_1 (&f_v, v); + + len -= 3; + } + + feature_finish_pass_1 (&f_h); + feature_finish_pass_1 (&f_s); + feature_finish_pass_1 (&f_v); + } + + { + STRLEN len; + unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); + while (len >= 3) + { + unsigned int r, g, b, h, s, v; + r = *buf++; g = *buf++; b = *buf++; + rgb_to_hsv (r, g, b, &h, &s, &v); + + feature_update_pass_2 (&f_h, h); + feature_update_pass_2 (&f_s, s); + feature_update_pass_2 (&f_v, v); + + len -= 3; + } + + feature_finish_pass_2 (&f_h); + feature_finish_pass_2 (&f_s); + feature_finish_pass_2 (&f_v); + } + + hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; + hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; + hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; + + av_push (result, histsv); + } + + RETVAL = newRV_noinc ((SV *)result); +} + OUTPUT: + RETVAL