uint64_t dhash_compute_internal(MagickWand* magick_wand, dhash_err* error) {
MagickBooleanType status;
PixelWand** pixels;
size_t width;
size_t pos = 0;
uint64_t hash = 0;
// Resize
status = MagickResizeImage(magick_wand, 9, 8, LanczosFilter, 1.0);
if (status == MagickFalse) {
set_mw_err(magick_wand, error);
return 0;
}
// Transform to grayscale
status = MagickTransformImageColorspace(magick_wand, GRAYColorspace);
if (status == MagickFalse) {
set_mw_err(magick_wand, error);
return 0;
}
PixelIterator* iterator = NewPixelIterator(magick_wand);
if (iterator == NULL) {
set_mw_err(magick_wand, error);
return 0;
}
for (size_t y = 0; y < MagickGetImageHeight(magick_wand); y++) {
pixels = PixelGetNextIteratorRow(iterator, &width);
if (pixels == NULL) {
break;
}
for (size_t x = 0; x < width - 1; x++) {
double lbright = PixelGetRed(pixels[x]);
double rbright = PixelGetRed(pixels[x + 1]);
if (lbright > rbright) {
addOneBit(&hash, pos);
}
pos++;
}
}
iterator = DestroyPixelIterator(iterator);
error->err_type = OK;
return hash;
}
ngx_int_t ngx_http_small_light_imagemagick_process(ngx_http_request_t *r, ngx_http_small_light_ctx_t *ctx)
{
ngx_http_small_light_imagemagick_ctx_t *ictx;
ngx_http_small_light_image_size_t sz;
MagickBooleanType status;
int rmprof_flg, progressive_flg, cmyk2rgb_flg;
double iw, ih, q;
char *unsharp, *sharpen, *blur, *of, *of_orig;
MagickWand *trans_wand, *canvas_wand;
DrawingWand *border_wand;
PixelWand *bg_color, *canvas_color, *border_color;
GeometryInfo geo;
ngx_fd_t fd;
MagickWand *icon_wand;
u_char *p, *embedicon;
size_t embedicon_path_len, embedicon_len, sled_image_size;
ngx_int_t type;
u_char jpeg_size_opt[32], crop_geo[128], size_geo[128], embedicon_path[256];
ColorspaceType color_space;
#if MagickLibVersion >= 0x690
int autoorient_flg;
#endif
status = MagickFalse;
ictx = (ngx_http_small_light_imagemagick_ctx_t *)ctx->ictx;
/* adjust image size */
ngx_http_small_light_calc_image_size(r, ctx, &sz, 10000.0, 10000.0);
/* prepare */
if (sz.jpeghint_flg != 0) {
p = ngx_snprintf((u_char *)jpeg_size_opt, sizeof(jpeg_size_opt) - 1, "%dx%d", (ngx_int_t)sz.dw, (ngx_int_t)sz.dh);
*p = '\0';
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "jpeg_size_opt:%s", jpeg_size_opt);
MagickSetOption(ictx->wand, "jpeg:size", (char *)jpeg_size_opt);
}
/* load image. */
status = MagickReadImageBlob(ictx->wand, (void *)ictx->image, ictx->image_len);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"couldn't read image %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
MagickSetFirstIterator(ictx->wand);
color_space = MagickGetImageColorspace(ictx->wand);
/* remove all profiles */
rmprof_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "rmprof"));
if (rmprof_flg != 0) {
status = MagickProfileImage(ictx->wand, "*", NULL, 0);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"couldn't profiling image %s:%d",
__FUNCTION__,
__LINE__);
}
}
of_orig = MagickGetImageFormat(ictx->wand);
status = MagickTrue;
#if MagickLibVersion >= 0x690
/* auto-orient */
autoorient_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "autoorient"));
if (autoorient_flg != 0) {
status = MagickAutoOrientImage(ictx->wand);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
}
#endif
/* rotate. */
if (sz.angle) {
bg_color = NewPixelWand();
PixelSetRed(bg_color, sz.cc.r / 255.0);
PixelSetGreen(bg_color, sz.cc.g / 255.0);
PixelSetBlue(bg_color, sz.cc.b / 255.0);
PixelSetAlpha(bg_color, sz.cc.a / 255.0);
switch (sz.angle) {
case 90:
case 180:
case 270:
MagickRotateImage(ictx->wand, bg_color, sz.angle);
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"image not rotated. 'angle'(%ui) must be 90 or 180 or 270. %s:%d",
sz.angle,
__FUNCTION__,
__LINE__);
break;
}
DestroyPixelWand(bg_color);
}
/* calc size. */
iw = (double)MagickGetImageWidth(ictx->wand);
ih = (double)MagickGetImageHeight(ictx->wand);
ngx_http_small_light_calc_image_size(r, ctx, &sz, iw, ih);
/* pass through. */
if (sz.pt_flg != 0) {
ctx->of = ctx->inf;
DestroyString(of_orig);
return NGX_OK;
}
/* crop, scale. */
if (sz.scale_flg != 0) {
p = ngx_snprintf(crop_geo, sizeof(crop_geo) - 1, "%f!x%f!+%f+%f", sz.sw, sz.sh, sz.sx, sz.sy);
*p = '\0';
p = ngx_snprintf(size_geo, sizeof(size_geo) - 1, "%f!x%f!", sz.dw, sz.dh);
*p = '\0';
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "crop_geo:%s", crop_geo);
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, "size_geo:%s", size_geo);
MagickResetImagePage(ictx->wand, "+0+0");
trans_wand = MagickTransformImage(ictx->wand, (char *)crop_geo, (char *)size_geo);
if (trans_wand == NULL || trans_wand == ictx->wand) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
DestroyMagickWand(ictx->wand);
ictx->wand = trans_wand;
}
/* create canvas then draw image to the canvas. */
if (sz.cw > 0.0 && sz.ch > 0.0) {
canvas_wand = NewMagickWand();
canvas_color = NewPixelWand();
PixelSetRed(canvas_color, sz.cc.r / 255.0);
PixelSetGreen(canvas_color, sz.cc.g / 255.0);
PixelSetBlue(canvas_color, sz.cc.b / 255.0);
PixelSetAlpha(canvas_color, sz.cc.a / 255.0);
status = MagickNewImage(canvas_wand, sz.cw, sz.ch, canvas_color);
DestroyPixelWand(canvas_color);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
status = MagickTransformImageColorspace(canvas_wand, color_space);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
status = MagickCompositeImage(canvas_wand, ictx->wand, AtopCompositeOp, sz.dx, sz.dy);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyMagickWand(canvas_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
DestroyMagickWand(ictx->wand);
ictx->wand = canvas_wand;
}
/* CMYK to sRGB */
cmyk2rgb_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "cmyk2rgb"));
if (cmyk2rgb_flg != 0 && color_space == CMYKColorspace) {
status = MagickTransformImageColorspace(ictx->wand, sRGBColorspace);
if (status == MagickFalse) {
r->err_status = NGX_HTTP_INTERNAL_SERVER_ERROR;
DestroyString(of_orig);
return NGX_ERROR;
}
}
/* effects. */
unsharp = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "unsharp");
if (ngx_strlen(unsharp) > 0) {
ParseGeometry(unsharp, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As unsharp geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickUnsharpMaskImage(ictx->wand, geo.rho, geo.sigma, geo.xi, geo.psi);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"unsharp failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
sharpen = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "sharpen");
if (ngx_strlen(sharpen) > 0) {
ParseGeometry(sharpen, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As sharpen geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickSharpenImage(ictx->wand, geo.rho, geo.sigma);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"sharpen failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
blur = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "blur");
if (ngx_strlen(blur) > 0) {
ParseGeometry(blur, &geo);
if (geo.rho > ctx->radius_max || geo.sigma > ctx->sigma_max) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"As blur geometry is too large, ignored. %s:%d",
__FUNCTION__,
__LINE__);
} else {
status = MagickBlurImage(ictx->wand, geo.rho, geo.sigma);
if (status == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"blur failed %s:%d",
__FUNCTION__,
__LINE__);
}
}
}
/* border. */
if (sz.bw > 0.0 || sz.bh > 0.0) {
border_wand = NewDrawingWand();
border_color = NewPixelWand();
PixelSetRed(border_color, sz.bc.r / 255.0);
PixelSetGreen(border_color, sz.bc.g / 255.0);
PixelSetBlue(border_color, sz.bc.b / 255.0);
PixelSetAlpha(border_color, sz.bc.a / 255.0);
DrawSetFillColor(border_wand, border_color);
DrawSetStrokeColor(border_wand, border_color);
DrawSetStrokeWidth(border_wand, 1);
if (sz.cw > 0.0 && sz.ch > 0.0) {
DrawRectangle(border_wand, 0, 0, sz.cw - 1, sz.bh - 1);
DrawRectangle(border_wand, 0, 0, sz.bw - 1, sz.ch - 1);
DrawRectangle(border_wand, 0, sz.ch - sz.bh, sz.cw - 1, sz.ch - 1);
DrawRectangle(border_wand, sz.cw - sz.bw, 0, sz.cw - 1, sz.ch - 1);
} else {
DrawRectangle(border_wand, 0, 0, sz.dw - 1, sz.bh - 1);
DrawRectangle(border_wand, 0, 0, sz.bw - 1, sz.dh - 1);
DrawRectangle(border_wand, 0, sz.dh - sz.bh, sz.dw - 1, sz.dh - 1);
DrawRectangle(border_wand, sz.dw - sz.bw, 0, sz.dw - 1, sz.dh - 1);
}
MagickDrawImage(ictx->wand, border_wand);
DestroyPixelWand(border_color);
DestroyDrawingWand(border_wand);
}
/* embed icon */
embedicon = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "embedicon");
if (ctx->material_dir->len > 0 && ngx_strlen(embedicon) > 0) {
if (ngx_strstrn((u_char *)embedicon, "/", 1 - 1)) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"invalid parameter 'embedicon':%s %s:%d",
embedicon,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
embedicon_len = ngx_strlen(embedicon);
embedicon_path_len = ctx->material_dir->len + ngx_strlen("/") + embedicon_len;
if (embedicon_path_len > sizeof(embedicon_path) - 1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"embedicon path is too long. maximun value is %z %s:%d",
sizeof(embedicon_path) - 1,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
p = embedicon_path;
p = ngx_cpystrn(p, ctx->material_dir->data, ctx->material_dir->len + 1);
p = ngx_cpystrn(p, (u_char *)"/", 1 + 1);
p = ngx_cpystrn(p, embedicon, embedicon_len + 1);
if ((fd = ngx_open_file(embedicon_path, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0)) == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to open embeddedicon file:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to close:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
if (ngx_strstrn(embedicon_path, "..", 2 - 1)) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"invalid embeddedicon_path:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyString(of_orig);
return NGX_ERROR;
}
icon_wand = NewMagickWand();
if (MagickReadImage(icon_wand, (char *)embedicon_path) == MagickFalse) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to read embed icon image file:%s %s:%d",
embedicon_path,
__FUNCTION__,
__LINE__);
DestroyMagickWand(icon_wand);
DestroyString(of_orig);
return NGX_ERROR;
}
MagickCompositeImageChannel(ictx->wand, AllChannels, icon_wand, OverCompositeOp, sz.ix, sz.iy);
DestroyMagickWand(icon_wand);
}
/* set params. */
q = ngx_http_small_light_parse_double(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "q"));
if (q > 0.0) {
MagickSetImageCompressionQuality(ictx->wand, q);
}
progressive_flg = ngx_http_small_light_parse_flag(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "progressive"));
if (progressive_flg != 0) {
MagickSetInterlaceScheme(ictx->wand, LineInterlace);
}
of = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "of");
if (ngx_strlen(of) > 0) {
type = ngx_http_small_light_type(of);
if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_NONE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"of is invalid(%s) %s:%d",
of,
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
} else if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_WEBP) {
#if defined(MAGICKCORE_WEBP_DELEGATE)
ictx->type = type;
#else
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"WebP is not supported %s:%d",
__FUNCTION__,
__LINE__);
of = (char *)ngx_http_small_light_image_exts[ictx->type - 1];
#endif
} else {
ictx->type = type;
}
MagickSetFormat(ictx->wand, of);
ctx->of = ngx_http_small_light_image_types[ictx->type - 1];
} else {
MagickSetFormat(ictx->wand, of_orig);
ctx->of = ctx->inf;
}
DestroyString(of_orig);
ctx->content = MagickGetImageBlob(ictx->wand, &sled_image_size);
ctx->content_length = sled_image_size;
ngx_pfree(r->pool, ctx->content_orig);
ictx->complete = 1;
return NGX_OK;
}
