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image_filter.patch
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image_filter.patch
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--- build/src/http/modules/ngx_http_image_filter_module.c 2019-09-24 15:35:32.000000000 -0500
+++ build/ngx_http_image_filter_module.c 2022-01-11 12:32:00.000000000 -0600
@@ -10,7 +10,7 @@
#include <ngx_http.h>
#include <gd.h>
-
+#include <math.h>
#define NGX_HTTP_IMAGE_OFF 0
#define NGX_HTTP_IMAGE_TEST 1
@@ -18,6 +18,8 @@
#define NGX_HTTP_IMAGE_RESIZE 3
#define NGX_HTTP_IMAGE_CROP 4
#define NGX_HTTP_IMAGE_ROTATE 5
+#define NGX_HTTP_IMAGE_CROP_KEEPX 6
+#define NGX_HTTP_IMAGE_CROP_KEEPY 7
#define NGX_HTTP_IMAGE_START 0
@@ -32,10 +34,16 @@
#define NGX_HTTP_IMAGE_GIF 2
#define NGX_HTTP_IMAGE_PNG 3
#define NGX_HTTP_IMAGE_WEBP 4
-
+#define NGX_HTTP_IMAGE_BMP 5
+#define NGX_HTTP_IMAGE_TIFF 6
#define NGX_HTTP_IMAGE_BUFFERED 0x08
+#define NGX_HTTP_IMAGE_OFFSET_CENTER 0
+#define NGX_HTTP_IMAGE_OFFSET_LEFT 1
+#define NGX_HTTP_IMAGE_OFFSET_RIGHT 2
+#define NGX_HTTP_IMAGE_OFFSET_TOP 3
+#define NGX_HTTP_IMAGE_OFFSET_BOTTOM 4
typedef struct {
ngx_uint_t filter;
@@ -45,12 +53,20 @@
ngx_uint_t jpeg_quality;
ngx_uint_t webp_quality;
ngx_uint_t sharpen;
+ ngx_uint_t offset_x;
+ ngx_uint_t offset_y;
+ ngx_uint_t scale_max;
ngx_flag_t transparency;
ngx_flag_t interlace;
+ ngx_str_t water_image;
+ ngx_str_t water_pos;
+ ngx_http_complex_value_t *output;
ngx_http_complex_value_t *wcv;
ngx_http_complex_value_t *hcv;
+ ngx_http_complex_value_t *oxcv;
+ ngx_http_complex_value_t *oycv;
ngx_http_complex_value_t *acv;
ngx_http_complex_value_t *jqcv;
ngx_http_complex_value_t *wqcv;
@@ -70,7 +86,10 @@
ngx_uint_t height;
ngx_uint_t max_width;
ngx_uint_t max_height;
+ ngx_uint_t offset_x;
+ ngx_uint_t offset_y;
ngx_uint_t angle;
+ ngx_uint_t scale_max;
ngx_uint_t phase;
ngx_uint_t type;
@@ -116,60 +135,100 @@
ngx_command_t *cmd, void *conf);
static char *ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
+static char *ngx_http_image_filter_offset(ngx_conf_t *cf, ngx_command_t *cmd,
+ void *conf);
static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf);
-
+static void ngx_http_image_watermark(ngx_http_request_t *r,
+ ngx_http_image_filter_conf_t *conf, gdImagePtr src);
+static int my_offset(int calculatedLength, int requestedLength);
+static void my_resize(gdImagePtr original, gdImagePtr destination);
static ngx_command_t ngx_http_image_filter_commands[] = {
{ ngx_string("image_filter"),
- NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
+ NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE123,
ngx_http_image_filter,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("image_filter_jpeg_quality"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_image_filter_jpeg_quality,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("image_filter_webp_quality"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_image_filter_webp_quality,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("image_filter_sharpen"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_image_filter_sharpen,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("image_filter_transparency"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_image_filter_conf_t, transparency),
NULL },
{ ngx_string("image_filter_interlace"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_image_filter_conf_t, interlace),
NULL },
{ ngx_string("image_filter_buffer"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_image_filter_conf_t, buffer_size),
NULL },
+ { ngx_string("image_filter_output"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
+ ngx_http_set_complex_value_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_image_filter_conf_t, output),
+ NULL },
+
+ { ngx_string("image_filter_crop_offset"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE2,
+ ngx_http_image_filter_offset,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ 0,
+ NULL },
+
+ { ngx_string("image_filter_scale_max"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_image_filter_conf_t, scale_max),
+ NULL },
+
+ { ngx_string("image_filter_water_image"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_str_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_image_filter_conf_t, water_image),
+ NULL },
+
+ { ngx_string("image_filter_water_pos"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_str_slot,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ offsetof(ngx_http_image_filter_conf_t, water_pos),
+ NULL },
+
ngx_null_command
};
@@ -213,7 +272,9 @@
ngx_string("image/jpeg"),
ngx_string("image/gif"),
ngx_string("image/png"),
- ngx_string("image/webp")
+ ngx_string("image/webp"),
+ ngx_string("image/bmp"),
+ ngx_string("image/tiff")
};
@@ -296,6 +357,7 @@
ngx_chain_t out;
ngx_http_image_filter_ctx_t *ctx;
ngx_http_image_filter_conf_t *conf;
+ ngx_str_t ofmt = ngx_null_string;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "image filter");
@@ -338,6 +400,28 @@
/* override content type */
ct = &ngx_http_image_types[ctx->type - 1];
+ if (conf->output != NULL && ngx_http_complex_value(r, conf->output, &ofmt) == NGX_OK) {
+ if (ngx_strncmp(ofmt.data, "jpg", 3) == 0 || ngx_strncmp(ofmt.data, "jpeg", 4) == 0) {
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_JPEG - 1];
+
+ } else if (ngx_strncmp(ofmt.data, "gif", 3) == 0){
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_GIF - 1];
+
+ } else if (ngx_strncmp(ofmt.data, "png", 3) == 0){
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_PNG - 1];
+
+ } else if (ngx_strncmp(ofmt.data, "webp", 4) == 0){
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_WEBP - 1];
+
+ } else if (ngx_strncmp(ofmt.data, "bmp", 3) == 0){
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_BMP - 1];
+
+ } else if (ngx_strncmp(ofmt.data, "tiff", 4) == 0){
+ ct = &ngx_http_image_types[NGX_HTTP_IMAGE_TIFF - 1];
+
+ }
+ }
+
r->headers_out.content_type_len = ct->len;
r->headers_out.content_type = *ct;
r->headers_out.content_type_lowcase = NULL;
@@ -461,6 +545,17 @@
/* WebP */
return NGX_HTTP_IMAGE_WEBP;
+ } else if (p[0] == 'B' && p[1] == 'M') {
+ /* BMP */
+
+ return NGX_HTTP_IMAGE_BMP;
+
+ } else if ((p[0] == 'I' && p[1] == 'I' && p[2] == 42) || (p[0] == 'M' && p[1] == 'M' && p[3] == 42))
+ {
+ /* TIFF */
+
+ return NGX_HTTP_IMAGE_TIFF;
+
}
return NGX_HTTP_IMAGE_NONE;
@@ -527,6 +622,7 @@
ngx_int_t rc;
ngx_http_image_filter_ctx_t *ctx;
ngx_http_image_filter_conf_t *conf;
+ ngx_str_t ofmt = ngx_null_string;
r->connection->buffered &= ~NGX_HTTP_IMAGE_BUFFERED;
@@ -536,6 +632,14 @@
conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
+ /* always transform when convert */
+ if (conf->output != NULL && ngx_http_complex_value(r, conf->output, &ofmt) == NGX_OK) {
+ if (ofmt.len > 2) {
+ ctx->force = 1;
+ }
+ }
+
+
if (conf->filter == NGX_HTTP_IMAGE_SIZE) {
return ngx_http_image_json(r, rc == NGX_OK ? ctx : NULL);
}
@@ -562,6 +666,11 @@
return NULL;
}
+ // scale would force to resize image
+ if (conf->scale_max > 1) {
+ ctx->force = 1;
+ }
+
if (rc == NGX_OK
&& ctx->width <= ctx->max_width
&& ctx->height <= ctx->max_height
@@ -801,6 +910,23 @@
break;
+ case NGX_HTTP_IMAGE_BMP:
+ if (ctx->length < 24) {
+ return NGX_DECLINED;
+ }
+
+ width = p[18] * 256 + p[19];
+ height = p[22] * 256 + p[23];
+
+ break;
+
+ case NGX_HTTP_IMAGE_TIFF:
+ /* todo: figure out image size calculation for tiff */
+ width = 0;
+ height = 0;
+
+ break;
+
default:
return NGX_DECLINED;
@@ -821,8 +947,10 @@
{
int sx, sy, dx, dy, ox, oy, ax, ay, size,
colors, palette, transparent, sharpen,
- red, green, blue, t;
+ red, green, blue, t, scale_max,
+ offset_x, offset_y;
u_char *out;
+ double ratio, ratio_h;
ngx_buf_t *b;
ngx_uint_t resize;
gdImagePtr src, dst;
@@ -840,6 +968,9 @@
conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
+ scale_max = (int) conf->scale_max;
+ ratio = 1;
+
if (!ctx->force
&& ctx->angle == 0
&& (ngx_uint_t) sx <= ctx->max_width
@@ -872,6 +1003,65 @@
transparent:
+ if ((int)ctx->max_width > 0) {
+ ratio = ((double) ctx->max_width / (double) sx);
+ }
+
+ if ((int)ctx->max_height > 0) {
+ ratio_h = ((double) ctx->max_height / (double) sy);
+ if (ratio_h > ratio) {
+ ratio = ratio_h;
+ }
+ }
+
+ // pre-resize if using scale and required a larger image
+ if (scale_max > 1) {
+ if (ratio > 1) {
+ // ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "scale max = %d, %d \n", scale_max, scale_max);
+ // ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "scale ratio = %d, %d \n", ratio, ratio);
+
+ if (ratio > (double) scale_max) {
+ ratio = (double) scale_max;
+ }
+
+ /*
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "width max = %d, %d \n", ctx->max_width, ctx->max_width);
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "width img = %d, %d \n", sx, sx);
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "height max = %d, %d \n", ctx->max_height, ctx->max_height);
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "height img = %d, %d \n", sy, sy);
+ */
+
+ // ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "scale %d, %d \n", ratio, ratio);
+ dst = ngx_http_image_new(r, sx * ratio, sy * ratio, palette);
+
+ if (dst == NULL) {
+ gdImageDestroy(src);
+ return NULL;
+ }
+
+ if (transparent == -1) {
+ gdImageSaveAlpha(src, 1);
+ gdImageColorTransparent(src, -1);
+
+ if(colors == 0) {
+ gdImageAlphaBlending(dst, 0);
+ gdImageSaveAlpha(dst, 1);
+ } else {
+ gdImageTrueColorToPalette(dst, 1, 256);
+ }
+ }
+
+ // white background
+ // gdImageFill(dst, 0, 0, gdImageColorAllocate(dst, 255, 255, 255));
+ my_resize(src, dst);
+ // set the new original
+ gdImageDestroy(src);
+ src = dst;
+ sx = gdImageSX(src);
+ sy = gdImageSY(src);
+ }
+ }
+
gdImageColorTransparent(src, -1);
dx = sx;
@@ -901,7 +1091,23 @@
resize = 0;
- if ((double) dx / dy < (double) ctx->max_width / ctx->max_height) {
+ if (conf->filter == NGX_HTTP_IMAGE_CROP_KEEPX) {
+ if ((ngx_uint_t) dx > ctx->max_width) {
+ dy = dy * ctx->max_width / dx;
+ dy = dy ? dy : 1;
+ dx = ctx->max_width;
+ resize = 1;
+ }
+
+ } else if (conf->filter == NGX_HTTP_IMAGE_CROP_KEEPY) {
+ if ((ngx_uint_t) dy > ctx->max_height) {
+ dx = dx * ctx->max_height / dy;
+ dx = dx ? dx : 1;
+ dy = ctx->max_height;
+ resize = 1;
+ }
+
+ } else if ((double) dx / dy < (double) ctx->max_width / ctx->max_height) {
if ((ngx_uint_t) dx > ctx->max_width) {
dy = dy * ctx->max_width / dx;
dy = dy ? dy : 1;
@@ -931,7 +1137,9 @@
gdImageAlphaBlending(dst, 0);
}
- gdImageCopyResampled(dst, src, 0, 0, 0, 0, dx, dy, sx, sy);
+ // gdImageFill(dst, 0, 0, gdImageColorAllocate(dst, 255, 255, 255));
+
+ gdImageCopyResampled(dst, src, 0, 0, 0, 0, ceil(dx), ceil(dy), sx, sy);
if (colors) {
gdImageTrueColorToPalette(dst, 1, 256);
@@ -989,7 +1197,9 @@
}
}
- if (conf->filter == NGX_HTTP_IMAGE_CROP) {
+ if (conf->filter == NGX_HTTP_IMAGE_CROP
+ || conf->filter == NGX_HTTP_IMAGE_CROP_KEEPX
+ || conf->filter == NGX_HTTP_IMAGE_CROP_KEEPY) {
src = dst;
@@ -1016,8 +1226,24 @@
return NULL;
}
- ox /= 2;
- oy /= 2;
+ offset_x = ngx_http_image_filter_get_value(r, conf->oxcv,
+ conf->offset_x);
+ offset_y = ngx_http_image_filter_get_value(r, conf->oycv,
+ conf->offset_y);
+
+ if (offset_x == NGX_HTTP_IMAGE_OFFSET_LEFT) {
+ ox = 0;
+
+ } else if (offset_x == NGX_HTTP_IMAGE_OFFSET_CENTER) {
+ ox /= 2;
+ }
+
+ if (offset_y == NGX_HTTP_IMAGE_OFFSET_TOP) {
+ oy = 0;
+
+ } else if (offset_y == NGX_HTTP_IMAGE_OFFSET_CENTER) {
+ oy /= 2;
+ }
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"image crop: %d x %d @ %d x %d",
@@ -1048,6 +1274,7 @@
}
gdImageInterlace(dst, (int) conf->interlace);
+ ngx_http_image_watermark(r, conf, dst);
out = ngx_http_image_out(r, ctx->type, dst, &size);
@@ -1122,6 +1349,20 @@
#endif
break;
+ case NGX_HTTP_IMAGE_BMP:
+ img = gdImageCreateFromBmpPtr(ctx->length, ctx->image);
+ ctx->width = img->sx;
+ ctx->height = img->sy;
+ failed = "gdImageCreateFromBmpPtr() failed";
+ break;
+
+ case NGX_HTTP_IMAGE_TIFF:
+ img = gdImageCreateFromTiffPtr(ctx->length, ctx->image);
+ ctx->width = img->sx;
+ ctx->height = img->sy;
+ failed = "gdImageCreateFromTiffPtr() failed";
+ break;
+
default:
failed = "unknown image type";
break;
@@ -1171,14 +1412,37 @@
u_char *out;
ngx_int_t q;
ngx_http_image_filter_conf_t *conf;
+ ngx_str_t ofmt = ngx_null_string;
out = NULL;
+ conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
+
+ if (conf->output != NULL && ngx_http_complex_value(r, conf->output, &ofmt) == NGX_OK) {
+ if (ngx_strncmp(ofmt.data, "jpg", 3) == 0 || ngx_strncmp(ofmt.data, "jpeg", 4) == 0){
+ type = NGX_HTTP_IMAGE_JPEG;
+
+ } else if (ngx_strncmp(ofmt.data, "gif", 3) == 0){
+ type = NGX_HTTP_IMAGE_GIF;
+
+ } else if (ngx_strncmp(ofmt.data, "png", 3) == 0){
+ type = NGX_HTTP_IMAGE_PNG;
+
+ } else if (ngx_strncmp(ofmt.data, "webp", 4) == 0){
+ type = NGX_HTTP_IMAGE_WEBP;
+
+ } else if (ngx_strncmp(ofmt.data, "bmp", 3) == 0){
+ type = NGX_HTTP_IMAGE_BMP;
+
+ } else if (ngx_strncmp(ofmt.data, "tiff", 4) == 0){
+ type = NGX_HTTP_IMAGE_TIFF;
+
+ }
+ }
+
switch (type) {
case NGX_HTTP_IMAGE_JPEG:
- conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
-
q = ngx_http_image_filter_get_value(r, conf->jqcv, conf->jpeg_quality);
if (q <= 0) {
return NULL;
@@ -1195,13 +1459,11 @@
case NGX_HTTP_IMAGE_PNG:
out = gdImagePngPtr(img, size);
- failed = "gdImagePngPtr() failed";
+ failed = "gdImagePngPtr() failed";
break;
case NGX_HTTP_IMAGE_WEBP:
#if (NGX_HAVE_GD_WEBP)
- conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
-
q = ngx_http_image_filter_get_value(r, conf->wqcv, conf->webp_quality);
if (q <= 0) {
return NULL;
@@ -1214,6 +1476,22 @@
#endif
break;
+ case NGX_HTTP_IMAGE_BMP:
+ /* reuse jpeg quality value */
+ q = ngx_http_image_filter_get_value(r, conf->jqcv, conf->jpeg_quality);
+ if (q <= 0) {
+ return NULL;
+ }
+
+ out = gdImageBmpPtr(img, size, q);
+ failed = "gdImageBmpPtr() failed";
+ break;
+
+ case NGX_HTTP_IMAGE_TIFF:
+ out = gdImageTiffPtr(img, size);
+ failed = "gdImageTiffPtr() failed";
+ break;
+
default:
failed = "unknown image type";
break;
@@ -1263,7 +1541,27 @@
n = ngx_atoi(value->data, value->len);
- if (n > 0) {
+ if (n == NGX_ERROR) {
+ if (value->len == sizeof("left") - 1
+ && ngx_strncmp(value->data, "left", value->len) == 0)
+ {
+ return NGX_HTTP_IMAGE_OFFSET_LEFT;
+ } else if (value->len == sizeof("right") - 1
+ && ngx_strncmp(value->data, "right", sizeof("right") - 1) == 0)
+ {
+ return NGX_HTTP_IMAGE_OFFSET_RIGHT;
+ } else if (value->len == sizeof("top") - 1
+ && ngx_strncmp(value->data, "top", sizeof("top") - 1) == 0)
+ {
+ return NGX_HTTP_IMAGE_OFFSET_TOP;
+ } else if (value->len == sizeof("bottom") - 1
+ && ngx_strncmp(value->data, "bottom", sizeof("bottom") - 1) == 0)
+ {
+ return NGX_HTTP_IMAGE_OFFSET_BOTTOM;
+ } else {
+ return NGX_HTTP_IMAGE_OFFSET_CENTER;
+ }
+ } else if (n > 0) {
return (ngx_uint_t) n;
}
@@ -1299,9 +1597,13 @@
conf->jpeg_quality = NGX_CONF_UNSET_UINT;
conf->webp_quality = NGX_CONF_UNSET_UINT;
conf->sharpen = NGX_CONF_UNSET_UINT;
+ conf->angle = NGX_CONF_UNSET_UINT;
conf->transparency = NGX_CONF_UNSET;
conf->interlace = NGX_CONF_UNSET;
conf->buffer_size = NGX_CONF_UNSET_SIZE;
+ conf->offset_x = NGX_CONF_UNSET_UINT;
+ conf->offset_y = NGX_CONF_UNSET_UINT;
+ conf->scale_max = NGX_CONF_UNSET_UINT;
return conf;
}
@@ -1364,6 +1666,37 @@
ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,
1 * 1024 * 1024);
+ ngx_conf_merge_str_value(conf->water_image, prev->water_image, "");
+
+ ngx_conf_merge_str_value(conf->water_pos, prev->water_pos, "bottom-right");
+
+ if (conf->offset_x == NGX_CONF_UNSET_UINT) {
+ ngx_conf_merge_uint_value(conf->offset_x, prev->offset_x,
+ NGX_HTTP_IMAGE_OFFSET_CENTER);
+
+ if (conf->oxcv == NULL) {
+ conf->oxcv = prev->oxcv;
+ }
+ }
+
+ if (conf->offset_y == NGX_CONF_UNSET_UINT) {
+ ngx_conf_merge_uint_value(conf->offset_y, prev->offset_y,
+ NGX_HTTP_IMAGE_OFFSET_CENTER);
+
+ if (conf->oycv == NULL) {
+ conf->oycv = prev->oycv;
+ }
+ }
+
+ if (conf->scale_max == NGX_CONF_UNSET_UINT) {
+ /* 2 is the default max ratio */
+ ngx_conf_merge_uint_value(conf->scale_max, prev->scale_max, 1);
+ }
+
+ if (conf->output == NULL) {
+ conf->output = prev->output;
+ }
+
return NGX_CONF_OK;
}
@@ -1662,6 +1995,66 @@
}
+static char *
+ngx_http_image_filter_offset(ngx_conf_t *cf, ngx_command_t *cmd,
+ void *conf)
+{
+ ngx_http_image_filter_conf_t *imcf = conf;
+
+ ngx_str_t *value;
+ ngx_http_complex_value_t cv;
+ ngx_http_compile_complex_value_t ccv;
+
+ value = cf->args->elts;
+
+ ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &value[1];
+ ccv.complex_value = &cv;
+
+ if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (cv.lengths == NULL) {
+ imcf->offset_x = ngx_http_image_filter_value(&value[1]);
+
+ } else {
+ imcf->oxcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
+ if (imcf->oxcv == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ *imcf->oxcv = cv;
+ }
+
+ ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &value[2];
+ ccv.complex_value = &cv;
+
+ if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (cv.lengths == NULL) {
+ imcf->offset_y = ngx_http_image_filter_value(&value[2]);
+
+ } else {
+ imcf->oycv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
+ if (imcf->oycv == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ *imcf->oycv = cv;
+ }
+
+ return NGX_CONF_OK;
+}
+
+
static ngx_int_t
ngx_http_image_filter_init(ngx_conf_t *cf)
{
@@ -1673,3 +2066,113 @@
return NGX_OK;
}
+
+
+static void
+ngx_http_image_watermark(ngx_http_request_t *r, ngx_http_image_filter_conf_t *conf, gdImagePtr src)
+{
+ // apply watermark
+ if (ngx_strcmp(conf->water_image.data, "") == 0) {
+ return;
+ }
+
+ int dx, dy;
+
+ dx = gdImageSX(src);
+ dy = gdImageSY(src);
+
+ FILE *watermark_file = fopen((const char *)conf->water_image.data, "r");
+
+ if (watermark_file) {
+ gdImagePtr watermark, watermark_mix;
+ ngx_int_t wdx = 0, wdy = 0;
+
+ watermark = gdImageCreateFromPng(watermark_file);
+ fclose(watermark_file);
+
+ if(watermark != NULL) {
+ watermark_mix = gdImageCreateTrueColor(watermark->sx, watermark->sy);
+
+ if (ngx_strcmp(conf->water_pos.data, "top-left") == 0) {
+ wdx = wdy = 10;
+ } else if (ngx_strcmp(conf->water_pos.data, "top-right") == 0) {
+ wdx = dx - watermark->sx - 10;
+ wdy = 10;
+ } else if (ngx_strcmp(conf->water_pos.data, "center") == 0) {
+ wdx = dx / 2 - watermark->sx / 2;
+ wdy = dy / 2 - watermark->sy / 2;
+ } else if (ngx_strcmp(conf->water_pos.data, "bottom-left") == 0) {
+ wdx = 10;
+ wdy = dy - watermark->sy - 10;
+ } else { // default bottom-right
+ wdx = dx - watermark->sx - 10;
+ wdy = dy - watermark->sy - 10;
+ }
+
+ // if watermark is larger than image set start to 0
+ if (wdx < 0) {
+ wdx = 0;
+ }
+ if (wdy < 0) {
+ wdy = 0;
+ }
+
+ gdImageCopy(watermark_mix, src, 0, 0, wdx, wdy, watermark->sx, watermark->sy);
+ gdImageCopy(watermark_mix, watermark, 0, 0, 0, 0, watermark->sx, watermark->sy);
+ gdImageCopyMerge(src, watermark_mix, wdx, wdy, 0, 0, watermark->sx, watermark->sy, 75);
+ gdImageDestroy(watermark);
+ gdImageDestroy(watermark_mix);
+ } else {
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "watermark file '%s' is not PNG", conf->water_image.data);
+ }
+ } else {
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "watermark file '%s' not found", conf->water_image.data);
+ }
+}
+
+
+static int my_offset(int calculatedLength, int requestedLength) {
+ int offset = 0;
+
+ if (calculatedLength > requestedLength) {
+ offset = (int)((calculatedLength - requestedLength) / 2);
+ }
+ else {
+ offset = (int)((requestedLength - calculatedLength) / 2);
+ }
+
+ if (offset < 0) {
+ offset = 0;
+ }
+
+ return (offset);
+}
+
+
+static void my_resize (gdImagePtr original, gdImagePtr destination) {
+ float originalRatio = (float)original->sx / original->sy;
+ float destinationRatio = (float)destination->sx / destination->sy;
+
+ int destinationX = destination->sx;
+ int destinationY = destination->sy;
+
+ if (destinationRatio > originalRatio) {
+ destinationX = ceil(destination->sy * originalRatio);
+ }
+ else {
+ destinationY = ceil(destination->sx / originalRatio);
+ }
+
+ gdImageCopyResampled(
+ destination,
+ original,
+ my_offset(destinationX, destination->sx),
+ my_offset(destinationY, destination->sy),
+ 0,
+ 0,
+ destinationX,
+ destinationY,
+ original->sx,
+ original->sy
+ );
+}