Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_image_filter_module.c @ 5118:af155fc41deb
Image filter: the "image_filter_interlace" directive.
Patch by Ian Babrou, with minor changes.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Tue, 19 Mar 2013 08:13:48 +0000 |
parents | 5889bc5f7a65 |
children | 31932b5464f0 |
rev | line source |
---|---|
2788 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
2788 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
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11 |
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12 #include <gd.h> |
2788 | 13 |
14 | |
15 #define NGX_HTTP_IMAGE_OFF 0 | |
16 #define NGX_HTTP_IMAGE_TEST 1 | |
17 #define NGX_HTTP_IMAGE_SIZE 2 | |
18 #define NGX_HTTP_IMAGE_RESIZE 3 | |
19 #define NGX_HTTP_IMAGE_CROP 4 | |
3878 | 20 #define NGX_HTTP_IMAGE_ROTATE 5 |
2788 | 21 |
22 | |
23 #define NGX_HTTP_IMAGE_START 0 | |
24 #define NGX_HTTP_IMAGE_READ 1 | |
25 #define NGX_HTTP_IMAGE_PROCESS 2 | |
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26 #define NGX_HTTP_IMAGE_PASS 3 |
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27 #define NGX_HTTP_IMAGE_DONE 4 |
2788 | 28 |
29 | |
30 #define NGX_HTTP_IMAGE_NONE 0 | |
31 #define NGX_HTTP_IMAGE_JPEG 1 | |
32 #define NGX_HTTP_IMAGE_GIF 2 | |
33 #define NGX_HTTP_IMAGE_PNG 3 | |
34 | |
35 | |
36 #define NGX_HTTP_IMAGE_BUFFERED 0x08 | |
37 | |
38 | |
39 typedef struct { | |
40 ngx_uint_t filter; | |
41 ngx_uint_t width; | |
42 ngx_uint_t height; | |
3878 | 43 ngx_uint_t angle; |
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44 ngx_uint_t jpeg_quality; |
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45 ngx_uint_t sharpen; |
2788 | 46 |
3134 | 47 ngx_flag_t transparency; |
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48 ngx_flag_t interlace; |
3134 | 49 |
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50 ngx_http_complex_value_t *wcv; |
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51 ngx_http_complex_value_t *hcv; |
3878 | 52 ngx_http_complex_value_t *acv; |
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53 ngx_http_complex_value_t *jqcv; |
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54 ngx_http_complex_value_t *shcv; |
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55 |
2788 | 56 size_t buffer_size; |
57 } ngx_http_image_filter_conf_t; | |
58 | |
59 | |
60 typedef struct { | |
61 u_char *image; | |
62 u_char *last; | |
63 | |
64 size_t length; | |
65 | |
66 ngx_uint_t width; | |
67 ngx_uint_t height; | |
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68 ngx_uint_t max_width; |
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69 ngx_uint_t max_height; |
3878 | 70 ngx_uint_t angle; |
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71 |
2788 | 72 ngx_uint_t phase; |
73 ngx_uint_t type; | |
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74 ngx_uint_t force; |
2788 | 75 } ngx_http_image_filter_ctx_t; |
76 | |
77 | |
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78 static ngx_int_t ngx_http_image_send(ngx_http_request_t *r, |
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79 ngx_http_image_filter_ctx_t *ctx, ngx_chain_t *in); |
2788 | 80 static ngx_uint_t ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in); |
81 static ngx_int_t ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in); | |
82 static ngx_buf_t *ngx_http_image_process(ngx_http_request_t *r); | |
83 static ngx_buf_t *ngx_http_image_json(ngx_http_request_t *r, | |
84 ngx_http_image_filter_ctx_t *ctx); | |
85 static ngx_buf_t *ngx_http_image_asis(ngx_http_request_t *r, | |
86 ngx_http_image_filter_ctx_t *ctx); | |
87 static void ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b); | |
88 static ngx_int_t ngx_http_image_size(ngx_http_request_t *r, | |
89 ngx_http_image_filter_ctx_t *ctx); | |
90 | |
91 static ngx_buf_t *ngx_http_image_resize(ngx_http_request_t *r, | |
92 ngx_http_image_filter_ctx_t *ctx); | |
93 static gdImagePtr ngx_http_image_source(ngx_http_request_t *r, | |
94 ngx_http_image_filter_ctx_t *ctx); | |
95 static gdImagePtr ngx_http_image_new(ngx_http_request_t *r, int w, int h, | |
96 int colors); | |
97 static u_char *ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, | |
98 gdImagePtr img, int *size); | |
99 static void ngx_http_image_cleanup(void *data); | |
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100 static ngx_uint_t ngx_http_image_filter_get_value(ngx_http_request_t *r, |
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101 ngx_http_complex_value_t *cv, ngx_uint_t v); |
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102 static ngx_uint_t ngx_http_image_filter_value(ngx_str_t *value); |
2788 | 103 |
104 | |
105 static void *ngx_http_image_filter_create_conf(ngx_conf_t *cf); | |
106 static char *ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
107 void *child); | |
108 static char *ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, | |
109 void *conf); | |
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110 static char *ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf, |
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111 ngx_command_t *cmd, void *conf); |
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112 static char *ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd, |
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113 void *conf); |
2788 | 114 static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf); |
115 | |
116 | |
117 static ngx_command_t ngx_http_image_filter_commands[] = { | |
118 | |
119 { ngx_string("image_filter"), | |
4307 | 120 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, |
2788 | 121 ngx_http_image_filter, |
122 NGX_HTTP_LOC_CONF_OFFSET, | |
123 0, | |
124 NULL }, | |
125 | |
2848 | 126 { ngx_string("image_filter_jpeg_quality"), |
127 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
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128 ngx_http_image_filter_jpeg_quality, |
2848 | 129 NGX_HTTP_LOC_CONF_OFFSET, |
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130 0, |
2848 | 131 NULL }, |
132 | |
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133 { ngx_string("image_filter_sharpen"), |
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134 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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135 ngx_http_image_filter_sharpen, |
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136 NGX_HTTP_LOC_CONF_OFFSET, |
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137 0, |
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138 NULL }, |
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139 |
3134 | 140 { ngx_string("image_filter_transparency"), |
141 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
142 ngx_conf_set_flag_slot, | |
143 NGX_HTTP_LOC_CONF_OFFSET, | |
144 offsetof(ngx_http_image_filter_conf_t, transparency), | |
145 NULL }, | |
146 | |
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147 { ngx_string("image_filter_interlace"), |
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148 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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149 ngx_conf_set_flag_slot, |
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150 NGX_HTTP_LOC_CONF_OFFSET, |
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151 offsetof(ngx_http_image_filter_conf_t, interlace), |
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152 NULL }, |
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153 |
2788 | 154 { ngx_string("image_filter_buffer"), |
155 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
156 ngx_conf_set_size_slot, | |
157 NGX_HTTP_LOC_CONF_OFFSET, | |
158 offsetof(ngx_http_image_filter_conf_t, buffer_size), | |
159 NULL }, | |
160 | |
161 ngx_null_command | |
162 }; | |
163 | |
164 | |
165 static ngx_http_module_t ngx_http_image_filter_module_ctx = { | |
166 NULL, /* preconfiguration */ | |
167 ngx_http_image_filter_init, /* postconfiguration */ | |
168 | |
169 NULL, /* create main configuration */ | |
170 NULL, /* init main configuration */ | |
171 | |
172 NULL, /* create server configuration */ | |
173 NULL, /* merge server configuration */ | |
174 | |
175 ngx_http_image_filter_create_conf, /* create location configuration */ | |
176 ngx_http_image_filter_merge_conf /* merge location configuration */ | |
177 }; | |
178 | |
179 | |
180 ngx_module_t ngx_http_image_filter_module = { | |
181 NGX_MODULE_V1, | |
182 &ngx_http_image_filter_module_ctx, /* module context */ | |
183 ngx_http_image_filter_commands, /* module directives */ | |
184 NGX_HTTP_MODULE, /* module type */ | |
185 NULL, /* init master */ | |
186 NULL, /* init module */ | |
187 NULL, /* init process */ | |
188 NULL, /* init thread */ | |
189 NULL, /* exit thread */ | |
190 NULL, /* exit process */ | |
191 NULL, /* exit master */ | |
192 NGX_MODULE_V1_PADDING | |
193 }; | |
194 | |
195 | |
196 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
197 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
198 | |
199 | |
200 static ngx_str_t ngx_http_image_types[] = { | |
201 ngx_string("image/jpeg"), | |
202 ngx_string("image/gif"), | |
203 ngx_string("image/png") | |
204 }; | |
205 | |
206 | |
207 static ngx_int_t | |
208 ngx_http_image_header_filter(ngx_http_request_t *r) | |
209 { | |
210 off_t len; | |
211 ngx_http_image_filter_ctx_t *ctx; | |
212 ngx_http_image_filter_conf_t *conf; | |
213 | |
214 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
215 return ngx_http_next_header_filter(r); | |
216 } | |
217 | |
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218 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); |
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219 |
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220 if (ctx) { |
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221 ngx_http_set_ctx(r, NULL, ngx_http_image_filter_module); |
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222 return ngx_http_next_header_filter(r); |
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223 } |
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224 |
2788 | 225 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
226 | |
227 if (conf->filter == NGX_HTTP_IMAGE_OFF) { | |
228 return ngx_http_next_header_filter(r); | |
229 } | |
230 | |
231 if (r->headers_out.content_type.len | |
232 >= sizeof("multipart/x-mixed-replace") - 1 | |
233 && ngx_strncasecmp(r->headers_out.content_type.data, | |
234 (u_char *) "multipart/x-mixed-replace", | |
235 sizeof("multipart/x-mixed-replace") - 1) | |
236 == 0) | |
237 { | |
238 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
239 "image filter: multipart/x-mixed-replace response"); | |
240 | |
241 return NGX_ERROR; | |
242 } | |
243 | |
244 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_image_filter_ctx_t)); | |
245 if (ctx == NULL) { | |
246 return NGX_ERROR; | |
247 } | |
248 | |
249 ngx_http_set_ctx(r, ctx, ngx_http_image_filter_module); | |
250 | |
251 len = r->headers_out.content_length_n; | |
252 | |
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253 if (len != -1 && len > (off_t) conf->buffer_size) { |
2788 | 254 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
255 "image filter: too big response: %O", len); | |
256 | |
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257 return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE; |
2788 | 258 } |
259 | |
260 if (len == -1) { | |
261 ctx->length = conf->buffer_size; | |
262 | |
263 } else { | |
264 ctx->length = (size_t) len; | |
265 } | |
266 | |
267 if (r->headers_out.refresh) { | |
268 r->headers_out.refresh->hash = 0; | |
269 } | |
270 | |
271 r->main_filter_need_in_memory = 1; | |
272 r->allow_ranges = 0; | |
273 | |
274 return NGX_OK; | |
275 } | |
276 | |
277 | |
278 static ngx_int_t | |
279 ngx_http_image_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
280 { | |
281 ngx_int_t rc; | |
282 ngx_str_t *ct; | |
283 ngx_chain_t out; | |
284 ngx_http_image_filter_ctx_t *ctx; | |
285 ngx_http_image_filter_conf_t *conf; | |
286 | |
287 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "image filter"); | |
288 | |
289 if (in == NULL) { | |
290 return ngx_http_next_body_filter(r, in); | |
291 } | |
292 | |
293 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
294 | |
295 if (ctx == NULL) { | |
296 return ngx_http_next_body_filter(r, in); | |
297 } | |
298 | |
299 switch (ctx->phase) { | |
300 | |
301 case NGX_HTTP_IMAGE_START: | |
302 | |
303 ctx->type = ngx_http_image_test(r, in); | |
304 | |
305 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
306 | |
307 if (ctx->type == NGX_HTTP_IMAGE_NONE) { | |
308 | |
309 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
310 out.buf = ngx_http_image_json(r, NULL); | |
311 | |
312 if (out.buf) { | |
313 out.next = NULL; | |
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314 ctx->phase = NGX_HTTP_IMAGE_DONE; |
2788 | 315 |
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316 return ngx_http_image_send(r, ctx, &out); |
2788 | 317 } |
318 } | |
319 | |
320 return ngx_http_filter_finalize_request(r, | |
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321 &ngx_http_image_filter_module, |
2788 | 322 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
323 } | |
324 | |
325 /* override content type */ | |
326 | |
327 ct = &ngx_http_image_types[ctx->type - 1]; | |
328 r->headers_out.content_type_len = ct->len; | |
329 r->headers_out.content_type = *ct; | |
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330 r->headers_out.content_type_lowcase = NULL; |
2788 | 331 |
332 if (conf->filter == NGX_HTTP_IMAGE_TEST) { | |
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333 ctx->phase = NGX_HTTP_IMAGE_PASS; |
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334 |
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335 return ngx_http_image_send(r, ctx, in); |
2788 | 336 } |
337 | |
338 ctx->phase = NGX_HTTP_IMAGE_READ; | |
339 | |
340 /* fall through */ | |
341 | |
342 case NGX_HTTP_IMAGE_READ: | |
343 | |
344 rc = ngx_http_image_read(r, in); | |
345 | |
346 if (rc == NGX_AGAIN) { | |
347 return NGX_OK; | |
348 } | |
349 | |
350 if (rc == NGX_ERROR) { | |
351 return ngx_http_filter_finalize_request(r, | |
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352 &ngx_http_image_filter_module, |
2788 | 353 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
354 } | |
355 | |
356 /* fall through */ | |
357 | |
358 case NGX_HTTP_IMAGE_PROCESS: | |
359 | |
360 out.buf = ngx_http_image_process(r); | |
361 | |
362 if (out.buf == NULL) { | |
363 return ngx_http_filter_finalize_request(r, | |
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364 &ngx_http_image_filter_module, |
2788 | 365 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
366 } | |
367 | |
368 out.next = NULL; | |
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369 ctx->phase = NGX_HTTP_IMAGE_PASS; |
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370 |
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371 return ngx_http_image_send(r, ctx, &out); |
2788 | 372 |
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373 case NGX_HTTP_IMAGE_PASS: |
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374 |
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375 return ngx_http_next_body_filter(r, in); |
2788 | 376 |
377 default: /* NGX_HTTP_IMAGE_DONE */ | |
378 | |
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379 rc = ngx_http_next_body_filter(r, NULL); |
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380 |
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381 /* NGX_ERROR resets any pending data */ |
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382 return (rc == NGX_OK) ? NGX_ERROR : rc; |
2788 | 383 } |
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384 } |
2788 | 385 |
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386 |
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387 static ngx_int_t |
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388 ngx_http_image_send(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx, |
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389 ngx_chain_t *in) |
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390 { |
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391 ngx_int_t rc; |
2788 | 392 |
393 rc = ngx_http_next_header_filter(r); | |
394 | |
395 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
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396 return NGX_ERROR; |
2788 | 397 } |
398 | |
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399 rc = ngx_http_next_body_filter(r, in); |
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400 |
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401 if (ctx->phase == NGX_HTTP_IMAGE_DONE) { |
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402 /* NGX_ERROR resets any pending data */ |
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403 return (rc == NGX_OK) ? NGX_ERROR : rc; |
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404 } |
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405 |
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406 return rc; |
2788 | 407 } |
408 | |
409 | |
410 static ngx_uint_t | |
411 ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in) | |
412 { | |
413 u_char *p; | |
414 | |
415 p = in->buf->pos; | |
416 | |
417 if (in->buf->last - p < 16) { | |
418 return NGX_HTTP_IMAGE_NONE; | |
419 } | |
420 | |
421 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
422 "image filter: \"%c%c\"", p[0], p[1]); | |
423 | |
424 if (p[0] == 0xff && p[1] == 0xd8) { | |
425 | |
426 /* JPEG */ | |
427 | |
428 return NGX_HTTP_IMAGE_JPEG; | |
429 | |
430 } else if (p[0] == 'G' && p[1] == 'I' && p[2] == 'F' && p[3] == '8' | |
2918 | 431 && p[5] == 'a') |
2788 | 432 { |
2918 | 433 if (p[4] == '9' || p[4] == '7') { |
434 /* GIF */ | |
435 return NGX_HTTP_IMAGE_GIF; | |
436 } | |
2788 | 437 |
438 } else if (p[0] == 0x89 && p[1] == 'P' && p[2] == 'N' && p[3] == 'G' | |
439 && p[4] == 0x0d && p[5] == 0x0a && p[6] == 0x1a && p[7] == 0x0a) | |
440 { | |
441 /* PNG */ | |
442 | |
443 return NGX_HTTP_IMAGE_PNG; | |
444 } | |
445 | |
446 return NGX_HTTP_IMAGE_NONE; | |
447 } | |
448 | |
449 | |
450 static ngx_int_t | |
451 ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in) | |
452 { | |
453 u_char *p; | |
454 size_t size, rest; | |
455 ngx_buf_t *b; | |
456 ngx_chain_t *cl; | |
457 ngx_http_image_filter_ctx_t *ctx; | |
458 | |
459 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
460 | |
461 if (ctx->image == NULL) { | |
462 ctx->image = ngx_palloc(r->pool, ctx->length); | |
463 if (ctx->image == NULL) { | |
464 return NGX_ERROR; | |
465 } | |
466 | |
467 ctx->last = ctx->image; | |
468 } | |
469 | |
470 p = ctx->last; | |
471 | |
472 for (cl = in; cl; cl = cl->next) { | |
473 | |
474 b = cl->buf; | |
475 size = b->last - b->pos; | |
476 | |
477 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
478 "image buf: %uz", size); | |
479 | |
480 rest = ctx->image + ctx->length - p; | |
481 size = (rest < size) ? rest : size; | |
482 | |
483 p = ngx_cpymem(p, b->pos, size); | |
484 b->pos += size; | |
485 | |
486 if (b->last_buf) { | |
487 ctx->last = p; | |
488 return NGX_OK; | |
489 } | |
490 } | |
491 | |
492 ctx->last = p; | |
493 r->connection->buffered |= NGX_HTTP_IMAGE_BUFFERED; | |
494 | |
495 return NGX_AGAIN; | |
496 } | |
497 | |
498 | |
499 static ngx_buf_t * | |
500 ngx_http_image_process(ngx_http_request_t *r) | |
501 { | |
502 ngx_int_t rc; | |
503 ngx_http_image_filter_ctx_t *ctx; | |
504 ngx_http_image_filter_conf_t *conf; | |
505 | |
506 r->connection->buffered &= ~NGX_HTTP_IMAGE_BUFFERED; | |
507 | |
508 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
509 | |
510 rc = ngx_http_image_size(r, ctx); | |
511 | |
512 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
513 | |
514 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
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515 return ngx_http_image_json(r, rc == NGX_OK ? ctx : NULL); |
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516 } |
2788 | 517 |
3878 | 518 ctx->angle = ngx_http_image_filter_get_value(r, conf->acv, conf->angle); |
519 | |
520 if (conf->filter == NGX_HTTP_IMAGE_ROTATE) { | |
521 | |
522 if (ctx->angle != 90 && ctx->angle != 180 && ctx->angle != 270) { | |
523 return NULL; | |
524 } | |
525 | |
526 return ngx_http_image_resize(r, ctx); | |
527 } | |
528 | |
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529 ctx->max_width = ngx_http_image_filter_get_value(r, conf->wcv, conf->width); |
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530 if (ctx->max_width == 0) { |
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531 return NULL; |
2788 | 532 } |
533 | |
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534 ctx->max_height = ngx_http_image_filter_get_value(r, conf->hcv, |
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535 conf->height); |
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536 if (ctx->max_height == 0) { |
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537 return NULL; |
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538 } |
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539 |
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540 if (rc == NGX_OK |
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541 && ctx->width <= ctx->max_width |
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542 && ctx->height <= ctx->max_height |
3878 | 543 && ctx->angle == 0 |
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544 && !ctx->force) |
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545 { |
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546 return ngx_http_image_asis(r, ctx); |
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547 } |
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548 |
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549 return ngx_http_image_resize(r, ctx); |
2788 | 550 } |
551 | |
552 | |
553 static ngx_buf_t * | |
554 ngx_http_image_json(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
555 { | |
556 size_t len; | |
557 ngx_buf_t *b; | |
558 | |
559 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
560 if (b == NULL) { | |
561 return NULL; | |
562 } | |
563 | |
564 b->memory = 1; | |
565 b->last_buf = 1; | |
566 | |
567 ngx_http_clean_header(r); | |
568 | |
569 r->headers_out.status = NGX_HTTP_OK; | |
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570 ngx_str_set(&r->headers_out.content_type, "text/plain"); |
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571 r->headers_out.content_type_lowcase = NULL; |
2788 | 572 |
573 if (ctx == NULL) { | |
574 b->pos = (u_char *) "{}" CRLF; | |
575 b->last = b->pos + sizeof("{}" CRLF) - 1; | |
576 | |
577 ngx_http_image_length(r, b); | |
578 | |
579 return b; | |
580 } | |
581 | |
582 len = sizeof("{ \"img\" : " | |
583 "{ \"width\": , \"height\": , \"type\": \"jpeg\" } }" CRLF) - 1 | |
584 + 2 * NGX_SIZE_T_LEN; | |
585 | |
586 b->pos = ngx_pnalloc(r->pool, len); | |
587 if (b->pos == NULL) { | |
588 return NULL; | |
589 } | |
590 | |
591 b->last = ngx_sprintf(b->pos, | |
592 "{ \"img\" : " | |
593 "{ \"width\": %uz," | |
594 " \"height\": %uz," | |
595 " \"type\": \"%s\" } }" CRLF, | |
596 ctx->width, ctx->height, | |
597 ngx_http_image_types[ctx->type - 1].data + 6); | |
598 | |
599 ngx_http_image_length(r, b); | |
600 | |
601 return b; | |
602 } | |
603 | |
604 | |
605 static ngx_buf_t * | |
606 ngx_http_image_asis(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
607 { | |
608 ngx_buf_t *b; | |
609 | |
610 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
611 if (b == NULL) { | |
612 return NULL; | |
613 } | |
614 | |
615 b->pos = ctx->image; | |
616 b->last = ctx->last; | |
617 b->memory = 1; | |
618 b->last_buf = 1; | |
619 | |
620 ngx_http_image_length(r, b); | |
621 | |
622 return b; | |
623 } | |
624 | |
625 | |
626 static void | |
627 ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b) | |
628 { | |
629 r->headers_out.content_length_n = b->last - b->pos; | |
630 | |
631 if (r->headers_out.content_length) { | |
632 r->headers_out.content_length->hash = 0; | |
633 } | |
634 | |
635 r->headers_out.content_length = NULL; | |
636 } | |
637 | |
638 | |
639 static ngx_int_t | |
640 ngx_http_image_size(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
641 { | |
642 u_char *p, *last; | |
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643 size_t len, app; |
2788 | 644 ngx_uint_t width, height; |
645 | |
646 p = ctx->image; | |
647 | |
648 switch (ctx->type) { | |
649 | |
650 case NGX_HTTP_IMAGE_JPEG: | |
651 | |
652 p += 2; | |
653 last = ctx->image + ctx->length - 10; | |
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654 width = 0; |
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655 height = 0; |
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656 app = 0; |
2788 | 657 |
658 while (p < last) { | |
659 | |
660 if (p[0] == 0xff && p[1] != 0xff) { | |
661 | |
662 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3393 | 663 "JPEG: %02xd %02xd", p[0], p[1]); |
2788 | 664 |
665 p++; | |
666 | |
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667 if ((*p == 0xc0 || *p == 0xc1 || *p == 0xc2 || *p == 0xc3 |
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668 || *p == 0xc9 || *p == 0xca || *p == 0xcb) |
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669 && (width == 0 || height == 0)) |
2788 | 670 { |
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671 width = p[6] * 256 + p[7]; |
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672 height = p[4] * 256 + p[5]; |
2788 | 673 } |
674 | |
675 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
676 "JPEG: %02xd %02xd", p[1], p[2]); | |
677 | |
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678 len = p[1] * 256 + p[2]; |
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679 |
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680 if (*p >= 0xe1 && *p <= 0xef) { |
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681 /* application data, e.g., EXIF, Adobe XMP, etc. */ |
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682 app += len; |
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683 } |
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684 |
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685 p += len; |
2788 | 686 |
687 continue; | |
688 } | |
689 | |
690 p++; | |
691 } | |
692 | |
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693 if (width == 0 || height == 0) { |
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694 return NGX_DECLINED; |
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695 } |
2788 | 696 |
3394
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697 if (ctx->length / 20 < app) { |
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698 /* force conversion if application data consume more than 5% */ |
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699 ctx->force = 1; |
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700 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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701 "app data size: %uz", app); |
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702 } |
2788 | 703 |
704 break; | |
705 | |
706 case NGX_HTTP_IMAGE_GIF: | |
707 | |
708 if (ctx->length < 10) { | |
709 return NGX_DECLINED; | |
710 } | |
711 | |
712 width = p[7] * 256 + p[6]; | |
713 height = p[9] * 256 + p[8]; | |
714 | |
715 break; | |
716 | |
717 case NGX_HTTP_IMAGE_PNG: | |
718 | |
719 if (ctx->length < 24) { | |
720 return NGX_DECLINED; | |
721 } | |
722 | |
723 width = p[18] * 256 + p[19]; | |
724 height = p[22] * 256 + p[23]; | |
725 | |
726 break; | |
727 | |
728 default: | |
729 | |
730 return NGX_DECLINED; | |
731 } | |
732 | |
733 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
734 "image size: %d x %d", width, height); | |
735 | |
736 ctx->width = width; | |
737 ctx->height = height; | |
738 | |
739 return NGX_OK; | |
740 } | |
741 | |
742 | |
743 static ngx_buf_t * | |
744 ngx_http_image_resize(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
745 { | |
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746 int sx, sy, dx, dy, ox, oy, ax, ay, size, |
4265
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747 colors, palette, transparent, sharpen, |
3878 | 748 red, green, blue, t; |
2788 | 749 u_char *out; |
750 ngx_buf_t *b; | |
751 ngx_uint_t resize; | |
752 gdImagePtr src, dst; | |
753 ngx_pool_cleanup_t *cln; | |
754 ngx_http_image_filter_conf_t *conf; | |
755 | |
756 src = ngx_http_image_source(r, ctx); | |
757 | |
758 if (src == NULL) { | |
759 return NULL; | |
760 } | |
761 | |
762 sx = gdImageSX(src); | |
763 sy = gdImageSY(src); | |
764 | |
765 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
766 | |
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767 if (!ctx->force |
3878 | 768 && ctx->angle == 0 |
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769 && (ngx_uint_t) sx <= ctx->max_width |
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770 && (ngx_uint_t) sy <= ctx->max_height) |
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771 { |
2788 | 772 gdImageDestroy(src); |
773 return ngx_http_image_asis(r, ctx); | |
774 } | |
775 | |
776 colors = gdImageColorsTotal(src); | |
3134 | 777 |
778 if (colors && conf->transparency) { | |
779 transparent = gdImageGetTransparent(src); | |
780 | |
781 if (transparent != -1) { | |
782 palette = colors; | |
783 red = gdImageRed(src, transparent); | |
784 green = gdImageGreen(src, transparent); | |
785 blue = gdImageBlue(src, transparent); | |
2788 | 786 |
3134 | 787 goto transparent; |
788 } | |
789 } | |
3117 | 790 |
3134 | 791 palette = 0; |
792 transparent = -1; | |
793 red = 0; | |
794 green = 0; | |
795 blue = 0; | |
796 | |
797 transparent: | |
798 | |
799 gdImageColorTransparent(src, -1); | |
3117 | 800 |
2788 | 801 dx = sx; |
802 dy = sy; | |
803 | |
804 if (conf->filter == NGX_HTTP_IMAGE_RESIZE) { | |
805 | |
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806 if ((ngx_uint_t) dx > ctx->max_width) { |
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807 dy = dy * ctx->max_width / dx; |
2788 | 808 dy = dy ? dy : 1; |
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809 dx = ctx->max_width; |
2788 | 810 } |
811 | |
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812 if ((ngx_uint_t) dy > ctx->max_height) { |
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813 dx = dx * ctx->max_height / dy; |
2788 | 814 dx = dx ? dx : 1; |
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815 dy = ctx->max_height; |
2788 | 816 } |
817 | |
818 resize = 1; | |
819 | |
3878 | 820 } else if (conf->filter == NGX_HTTP_IMAGE_ROTATE) { |
821 | |
822 resize = 0; | |
823 | |
2788 | 824 } else { /* NGX_HTTP_IMAGE_CROP */ |
825 | |
826 resize = 0; | |
827 | |
4601
084137d883ec
Image filter: compare aspect ratio more accurately during crop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
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|
828 if ((double) dx / dy < (double) ctx->max_width / ctx->max_height) { |
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829 if ((ngx_uint_t) dx > ctx->max_width) { |
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830 dy = dy * ctx->max_width / dx; |
2788 | 831 dy = dy ? dy : 1; |
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832 dx = ctx->max_width; |
2788 | 833 resize = 1; |
834 } | |
835 | |
836 } else { | |
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837 if ((ngx_uint_t) dy > ctx->max_height) { |
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838 dx = dx * ctx->max_height / dy; |
2788 | 839 dx = dx ? dx : 1; |
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840 dy = ctx->max_height; |
2788 | 841 resize = 1; |
842 } | |
843 } | |
844 } | |
845 | |
846 if (resize) { | |
3134 | 847 dst = ngx_http_image_new(r, dx, dy, palette); |
2788 | 848 if (dst == NULL) { |
849 gdImageDestroy(src); | |
850 return NULL; | |
851 } | |
852 | |
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853 if (colors == 0) { |
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854 gdImageSaveAlpha(dst, 1); |
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855 gdImageAlphaBlending(dst, 0); |
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856 } |
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|
857 |
2788 | 858 gdImageCopyResampled(dst, src, 0, 0, 0, 0, dx, dy, sx, sy); |
859 | |
3134 | 860 if (colors) { |
861 gdImageTrueColorToPalette(dst, 1, 256); | |
862 } | |
863 | |
2788 | 864 gdImageDestroy(src); |
865 | |
866 } else { | |
867 dst = src; | |
868 } | |
869 | |
3878 | 870 if (ctx->angle) { |
871 src = dst; | |
872 | |
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873 ax = (dx % 2 == 0) ? 1 : 0; |
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874 ay = (dy % 2 == 0) ? 1 : 0; |
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875 |
3878 | 876 switch (ctx->angle) { |
877 | |
878 case 90: | |
879 case 270: | |
880 dst = ngx_http_image_new(r, dy, dx, palette); | |
881 if (dst == NULL) { | |
882 gdImageDestroy(src); | |
883 return NULL; | |
884 } | |
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885 if (ctx->angle == 90) { |
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886 ox = dy / 2 + ay; |
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887 oy = dx / 2 - ax; |
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888 |
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889 } else { |
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890 ox = dy / 2 - ay; |
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891 oy = dx / 2 + ax; |
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892 } |
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893 |
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|
894 gdImageCopyRotated(dst, src, ox, oy, 0, 0, |
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|
895 dx + ax, dy + ay, ctx->angle); |
3878 | 896 gdImageDestroy(src); |
3884
ea712f4dc030
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|
897 |
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|
898 t = dx; |
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899 dx = dy; |
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3878
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changeset
|
900 dy = t; |
3878 | 901 break; |
902 | |
903 case 180: | |
904 dst = ngx_http_image_new(r, dx, dy, palette); | |
905 if (dst == NULL) { | |
906 gdImageDestroy(src); | |
907 return NULL; | |
908 } | |
3910
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909 gdImageCopyRotated(dst, src, dx / 2 - ax, dy / 2 - ay, 0, 0, |
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|
910 dx + ax, dy + ay, ctx->angle); |
3878 | 911 gdImageDestroy(src); |
912 break; | |
913 } | |
914 } | |
915 | |
2788 | 916 if (conf->filter == NGX_HTTP_IMAGE_CROP) { |
917 | |
918 src = dst; | |
919 | |
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920 if ((ngx_uint_t) dx > ctx->max_width) { |
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921 ox = dx - ctx->max_width; |
2788 | 922 |
923 } else { | |
924 ox = 0; | |
925 } | |
926 | |
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927 if ((ngx_uint_t) dy > ctx->max_height) { |
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928 oy = dy - ctx->max_height; |
2788 | 929 |
930 } else { | |
931 oy = 0; | |
932 } | |
933 | |
934 if (ox || oy) { | |
935 | |
936 dst = ngx_http_image_new(r, dx - ox, dy - oy, colors); | |
937 | |
938 if (dst == NULL) { | |
939 gdImageDestroy(src); | |
940 return NULL; | |
941 } | |
942 | |
943 ox /= 2; | |
944 oy /= 2; | |
945 | |
946 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
947 "image crop: %d x %d @ %d x %d", | |
948 dx, dy, ox, oy); | |
949 | |
3133
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950 if (colors == 0) { |
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951 gdImageSaveAlpha(dst, 1); |
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952 gdImageAlphaBlending(dst, 0); |
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953 } |
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|
954 |
2788 | 955 gdImageCopy(dst, src, 0, 0, ox, oy, dx - ox, dy - oy); |
956 | |
3134 | 957 if (colors) { |
958 gdImageTrueColorToPalette(dst, 1, 256); | |
959 } | |
960 | |
2788 | 961 gdImageDestroy(src); |
962 } | |
963 } | |
964 | |
3117 | 965 if (transparent != -1 && colors) { |
966 gdImageColorTransparent(dst, gdImageColorExact(dst, red, green, blue)); | |
967 } | |
2788 | 968 |
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969 sharpen = ngx_http_image_filter_get_value(r, conf->shcv, conf->sharpen); |
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970 if (sharpen > 0) { |
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|
971 gdImageSharpen(dst, sharpen); |
01a7e78ff5a1
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|
972 } |
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|
973 |
5118
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Image filter: the "image_filter_interlace" directive.
Ruslan Ermilov <ru@nginx.com>
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4981
diff
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|
974 gdImageInterlace(dst, (int) conf->interlace); |
af155fc41deb
Image filter: the "image_filter_interlace" directive.
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diff
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|
975 |
2788 | 976 out = ngx_http_image_out(r, ctx->type, dst, &size); |
977 | |
978 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
979 "image: %d x %d %d", sx, sy, colors); | |
980 | |
981 gdImageDestroy(dst); | |
982 ngx_pfree(r->pool, ctx->image); | |
983 | |
984 if (out == NULL) { | |
985 return NULL; | |
986 } | |
987 | |
988 cln = ngx_pool_cleanup_add(r->pool, 0); | |
989 if (cln == NULL) { | |
990 gdFree(out); | |
991 return NULL; | |
992 } | |
993 | |
994 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
995 if (b == NULL) { | |
996 gdFree(out); | |
997 return NULL; | |
998 } | |
999 | |
1000 cln->handler = ngx_http_image_cleanup; | |
1001 cln->data = out; | |
1002 | |
1003 b->pos = out; | |
1004 b->last = out + size; | |
1005 b->memory = 1; | |
1006 b->last_buf = 1; | |
1007 | |
1008 ngx_http_image_length(r, b); | |
1009 | |
1010 return b; | |
1011 } | |
1012 | |
1013 | |
1014 static gdImagePtr | |
1015 ngx_http_image_source(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
1016 { | |
1017 char *failed; | |
1018 gdImagePtr img; | |
1019 | |
1020 img = NULL; | |
1021 | |
1022 switch (ctx->type) { | |
1023 | |
1024 case NGX_HTTP_IMAGE_JPEG: | |
1025 img = gdImageCreateFromJpegPtr(ctx->length, ctx->image); | |
1026 failed = "gdImageCreateFromJpegPtr() failed"; | |
1027 break; | |
1028 | |
1029 case NGX_HTTP_IMAGE_GIF: | |
1030 img = gdImageCreateFromGifPtr(ctx->length, ctx->image); | |
1031 failed = "gdImageCreateFromGifPtr() failed"; | |
1032 break; | |
1033 | |
1034 case NGX_HTTP_IMAGE_PNG: | |
1035 img = gdImageCreateFromPngPtr(ctx->length, ctx->image); | |
1036 failed = "gdImageCreateFromPngPtr() failed"; | |
1037 break; | |
1038 | |
1039 default: | |
1040 failed = "unknown image type"; | |
1041 break; | |
1042 } | |
1043 | |
1044 if (img == NULL) { | |
1045 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
1046 } | |
1047 | |
1048 return img; | |
1049 } | |
1050 | |
1051 | |
1052 static gdImagePtr | |
1053 ngx_http_image_new(ngx_http_request_t *r, int w, int h, int colors) | |
1054 { | |
1055 gdImagePtr img; | |
1056 | |
1057 if (colors == 0) { | |
1058 img = gdImageCreateTrueColor(w, h); | |
1059 | |
1060 if (img == NULL) { | |
1061 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1062 "gdImageCreateTrueColor() failed"); | |
1063 return NULL; | |
1064 } | |
1065 | |
1066 } else { | |
1067 img = gdImageCreate(w, h); | |
1068 | |
1069 if (img == NULL) { | |
1070 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1071 "gdImageCreate() failed"); | |
1072 return NULL; | |
1073 } | |
1074 } | |
1075 | |
1076 return img; | |
1077 } | |
1078 | |
1079 | |
1080 static u_char * | |
1081 ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, gdImagePtr img, | |
1082 int *size) | |
1083 { | |
2848 | 1084 char *failed; |
1085 u_char *out; | |
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1086 ngx_int_t jq; |
2848 | 1087 ngx_http_image_filter_conf_t *conf; |
2788 | 1088 |
1089 out = NULL; | |
1090 | |
1091 switch (type) { | |
1092 | |
1093 case NGX_HTTP_IMAGE_JPEG: | |
2848 | 1094 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
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1095 |
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1096 jq = ngx_http_image_filter_get_value(r, conf->jqcv, conf->jpeg_quality); |
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1097 if (jq <= 0) { |
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1098 return NULL; |
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1099 } |
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1100 |
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1101 out = gdImageJpegPtr(img, size, jq); |
2788 | 1102 failed = "gdImageJpegPtr() failed"; |
1103 break; | |
1104 | |
1105 case NGX_HTTP_IMAGE_GIF: | |
1106 out = gdImageGifPtr(img, size); | |
1107 failed = "gdImageGifPtr() failed"; | |
1108 break; | |
1109 | |
1110 case NGX_HTTP_IMAGE_PNG: | |
1111 out = gdImagePngPtr(img, size); | |
1112 failed = "gdImagePngPtr() failed"; | |
1113 break; | |
1114 | |
1115 default: | |
1116 failed = "unknown image type"; | |
1117 break; | |
1118 } | |
1119 | |
1120 if (out == NULL) { | |
1121 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
1122 } | |
1123 | |
1124 return out; | |
1125 } | |
1126 | |
1127 | |
1128 static void | |
1129 ngx_http_image_cleanup(void *data) | |
1130 { | |
1131 gdFree(data); | |
1132 } | |
1133 | |
1134 | |
2998
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1135 static ngx_uint_t |
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1136 ngx_http_image_filter_get_value(ngx_http_request_t *r, |
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1137 ngx_http_complex_value_t *cv, ngx_uint_t v) |
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1138 { |
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1139 ngx_str_t val; |
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1140 |
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1141 if (cv == NULL) { |
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1142 return v; |
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1143 } |
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1144 |
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1145 if (ngx_http_complex_value(r, cv, &val) != NGX_OK) { |
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1146 return 0; |
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1147 } |
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1148 |
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1149 return ngx_http_image_filter_value(&val); |
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1150 } |
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1151 |
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1152 |
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1153 static ngx_uint_t |
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1154 ngx_http_image_filter_value(ngx_str_t *value) |
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1155 { |
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1156 ngx_int_t n; |
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1157 |
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1158 if (value->len == 1 && value->data[0] == '-') { |
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1159 return (ngx_uint_t) -1; |
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1160 } |
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1161 |
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1162 n = ngx_atoi(value->data, value->len); |
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1163 |
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1164 if (n > 0) { |
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1165 return (ngx_uint_t) n; |
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1166 } |
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1167 |
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1168 return 0; |
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1169 } |
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1170 |
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1171 |
2788 | 1172 static void * |
1173 ngx_http_image_filter_create_conf(ngx_conf_t *cf) | |
1174 { | |
1175 ngx_http_image_filter_conf_t *conf; | |
1176 | |
1177 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_image_filter_conf_t)); | |
1178 if (conf == NULL) { | |
2912
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1179 return NULL; |
2788 | 1180 } |
1181 | |
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1182 /* |
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1183 * set by ngx_pcalloc(): |
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1184 * |
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1185 * conf->width = 0; |
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1186 * conf->height = 0; |
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1187 * conf->angle = 0; |
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1188 * conf->wcv = NULL; |
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1189 * conf->hcv = NULL; |
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1190 * conf->acv = NULL; |
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1191 * conf->jqcv = NULL; |
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1192 * conf->shcv = NULL; |
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1193 */ |
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1194 |
2788 | 1195 conf->filter = NGX_CONF_UNSET_UINT; |
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1196 conf->jpeg_quality = NGX_CONF_UNSET_UINT; |
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1197 conf->sharpen = NGX_CONF_UNSET_UINT; |
3134 | 1198 conf->transparency = NGX_CONF_UNSET; |
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1199 conf->interlace = NGX_CONF_UNSET; |
2788 | 1200 conf->buffer_size = NGX_CONF_UNSET_SIZE; |
1201 | |
1202 return conf; | |
1203 } | |
1204 | |
1205 | |
1206 static char * | |
1207 ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
1208 { | |
1209 ngx_http_image_filter_conf_t *prev = parent; | |
1210 ngx_http_image_filter_conf_t *conf = child; | |
1211 | |
1212 if (conf->filter == NGX_CONF_UNSET_UINT) { | |
1213 | |
1214 if (prev->filter == NGX_CONF_UNSET_UINT) { | |
1215 conf->filter = NGX_HTTP_IMAGE_OFF; | |
1216 | |
1217 } else { | |
1218 conf->filter = prev->filter; | |
1219 conf->width = prev->width; | |
1220 conf->height = prev->height; | |
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1221 conf->angle = prev->angle; |
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1222 conf->wcv = prev->wcv; |
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1223 conf->hcv = prev->hcv; |
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1224 conf->acv = prev->acv; |
2788 | 1225 } |
1226 } | |
1227 | |
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1228 if (conf->jpeg_quality == NGX_CONF_UNSET_UINT) { |
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1229 |
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1230 /* 75 is libjpeg default quality */ |
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1231 ngx_conf_merge_uint_value(conf->jpeg_quality, prev->jpeg_quality, 75); |
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1232 |
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1233 if (conf->jqcv == NULL) { |
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1234 conf->jqcv = prev->jqcv; |
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1235 } |
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1236 } |
2848 | 1237 |
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1238 if (conf->sharpen == NGX_CONF_UNSET_UINT) { |
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1239 ngx_conf_merge_uint_value(conf->sharpen, prev->sharpen, 0); |
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1240 |
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1241 if (conf->shcv == NULL) { |
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1242 conf->shcv = prev->shcv; |
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1243 } |
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1244 } |
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1245 |
3134 | 1246 ngx_conf_merge_value(conf->transparency, prev->transparency, 1); |
1247 | |
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1248 ngx_conf_merge_value(conf->interlace, prev->interlace, 0); |
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1249 |
2788 | 1250 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
1251 1 * 1024 * 1024); | |
1252 | |
1253 return NGX_CONF_OK; | |
1254 } | |
1255 | |
1256 | |
1257 static char * | |
1258 ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
1259 { | |
1260 ngx_http_image_filter_conf_t *imcf = conf; | |
1261 | |
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1262 ngx_str_t *value; |
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1263 ngx_int_t n; |
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1264 ngx_uint_t i; |
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1265 ngx_http_complex_value_t cv; |
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1266 ngx_http_compile_complex_value_t ccv; |
2788 | 1267 |
1268 value = cf->args->elts; | |
1269 | |
1270 i = 1; | |
1271 | |
1272 if (cf->args->nelts == 2) { | |
1273 if (ngx_strcmp(value[i].data, "off") == 0) { | |
1274 imcf->filter = NGX_HTTP_IMAGE_OFF; | |
1275 | |
1276 } else if (ngx_strcmp(value[i].data, "test") == 0) { | |
1277 imcf->filter = NGX_HTTP_IMAGE_TEST; | |
1278 | |
1279 } else if (ngx_strcmp(value[i].data, "size") == 0) { | |
1280 imcf->filter = NGX_HTTP_IMAGE_SIZE; | |
1281 | |
1282 } else { | |
1283 goto failed; | |
1284 } | |
1285 | |
1286 return NGX_CONF_OK; | |
3878 | 1287 |
1288 } else if (cf->args->nelts == 3) { | |
1289 | |
1290 if (ngx_strcmp(value[i].data, "rotate") == 0) { | |
4308
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1291 if (imcf->filter != NGX_HTTP_IMAGE_RESIZE |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1292 && imcf->filter != NGX_HTTP_IMAGE_CROP) |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1293 { |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1294 imcf->filter = NGX_HTTP_IMAGE_ROTATE; |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1295 } |
3878 | 1296 |
1297 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); | |
1298 | |
1299 ccv.cf = cf; | |
1300 ccv.value = &value[++i]; | |
1301 ccv.complex_value = &cv; | |
1302 | |
1303 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { | |
1304 return NGX_CONF_ERROR; | |
1305 } | |
1306 | |
1307 if (cv.lengths == NULL) { | |
1308 n = ngx_http_image_filter_value(&value[i]); | |
1309 | |
1310 if (n != 90 && n != 180 && n != 270) { | |
1311 goto failed; | |
1312 } | |
1313 | |
1314 imcf->angle = (ngx_uint_t) n; | |
1315 | |
1316 } else { | |
1317 imcf->acv = ngx_palloc(cf->pool, | |
1318 sizeof(ngx_http_complex_value_t)); | |
1319 if (imcf->acv == NULL) { | |
1320 return NGX_CONF_ERROR; | |
1321 } | |
1322 | |
1323 *imcf->acv = cv; | |
1324 } | |
1325 | |
1326 return NGX_CONF_OK; | |
1327 | |
1328 } else { | |
1329 goto failed; | |
1330 } | |
2788 | 1331 } |
1332 | |
1333 if (ngx_strcmp(value[i].data, "resize") == 0) { | |
1334 imcf->filter = NGX_HTTP_IMAGE_RESIZE; | |
1335 | |
1336 } else if (ngx_strcmp(value[i].data, "crop") == 0) { | |
1337 imcf->filter = NGX_HTTP_IMAGE_CROP; | |
1338 | |
1339 } else { | |
1340 goto failed; | |
1341 } | |
1342 | |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1343 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1344 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1345 ccv.cf = cf; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1346 ccv.value = &value[++i]; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1347 ccv.complex_value = &cv; |
2788 | 1348 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1349 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1350 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1351 } |
2788 | 1352 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1353 if (cv.lengths == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1354 n = ngx_http_image_filter_value(&value[i]); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1355 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1356 if (n == 0) { |
2788 | 1357 goto failed; |
1358 } | |
1359 | |
1360 imcf->width = (ngx_uint_t) n; | |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1361 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1362 } else { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1363 imcf->wcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1364 if (imcf->wcv == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1365 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1366 } |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1367 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1368 *imcf->wcv = cv; |
2788 | 1369 } |
1370 | |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1371 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1372 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1373 ccv.cf = cf; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1374 ccv.value = &value[++i]; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1375 ccv.complex_value = &cv; |
2788 | 1376 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1377 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1378 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1379 } |
2788 | 1380 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1381 if (cv.lengths == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1382 n = ngx_http_image_filter_value(&value[i]); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1383 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1384 if (n == 0) { |
2788 | 1385 goto failed; |
1386 } | |
1387 | |
1388 imcf->height = (ngx_uint_t) n; | |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1389 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1390 } else { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1391 imcf->hcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1392 if (imcf->hcv == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1393 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1394 } |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1395 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1396 *imcf->hcv = cv; |
2788 | 1397 } |
1398 | |
1399 return NGX_CONF_OK; | |
1400 | |
1401 failed: | |
1402 | |
1403 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", | |
1404 &value[i]); | |
1405 | |
1406 return NGX_CONF_ERROR; | |
1407 } | |
1408 | |
1409 | |
3745
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1410 static char * |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1411 ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf, ngx_command_t *cmd, |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1412 void *conf) |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1413 { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1414 ngx_http_image_filter_conf_t *imcf = conf; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1415 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1416 ngx_str_t *value; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1417 ngx_int_t n; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1418 ngx_http_complex_value_t cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1419 ngx_http_compile_complex_value_t ccv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1420 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1421 value = cf->args->elts; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1422 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1423 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1424 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1425 ccv.cf = cf; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1426 ccv.value = &value[1]; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1427 ccv.complex_value = &cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1428 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1429 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1430 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1431 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1432 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1433 if (cv.lengths == NULL) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1434 n = ngx_http_image_filter_value(&value[1]); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1435 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1436 if (n <= 0) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1437 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
4307 | 1438 "invalid value \"%V\"", &value[1]); |
3745
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1439 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1440 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1441 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1442 imcf->jpeg_quality = (ngx_uint_t) n; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1443 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1444 } else { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1445 imcf->jqcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1446 if (imcf->jqcv == NULL) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1447 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1448 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1449 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1450 *imcf->jqcv = cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1451 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1452 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1453 return NGX_CONF_OK; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1454 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1455 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1456 |
4265
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1457 static char * |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1458 ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd, |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1459 void *conf) |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1460 { |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1461 ngx_http_image_filter_conf_t *imcf = conf; |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1462 |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1463 ngx_str_t *value; |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1464 ngx_int_t n; |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1465 ngx_http_complex_value_t cv; |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1466 ngx_http_compile_complex_value_t ccv; |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
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1467 |
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1468 value = cf->args->elts; |
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1469 |
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1470 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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1471 |
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1472 ccv.cf = cf; |
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1473 ccv.value = &value[1]; |
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1474 ccv.complex_value = &cv; |
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1475 |
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1476 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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1477 return NGX_CONF_ERROR; |
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1478 } |
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1479 |
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1480 if (cv.lengths == NULL) { |
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1481 n = ngx_http_image_filter_value(&value[1]); |
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1482 |
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1483 if (n < 0) { |
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1484 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
4307 | 1485 "invalid value \"%V\"", &value[1]); |
4265
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1486 return NGX_CONF_ERROR; |
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1487 } |
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1488 |
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1489 imcf->sharpen = (ngx_uint_t) n; |
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1490 |
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1491 } else { |
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1492 imcf->shcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
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1493 if (imcf->shcv == NULL) { |
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1494 return NGX_CONF_ERROR; |
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1495 } |
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1496 |
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1497 *imcf->shcv = cv; |
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1498 } |
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1499 |
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1500 return NGX_CONF_OK; |
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1501 } |
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1502 |
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1503 |
2788 | 1504 static ngx_int_t |
1505 ngx_http_image_filter_init(ngx_conf_t *cf) | |
1506 { | |
1507 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
1508 ngx_http_top_header_filter = ngx_http_image_header_filter; | |
1509 | |
1510 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
1511 ngx_http_top_body_filter = ngx_http_image_body_filter; | |
1512 | |
1513 return NGX_OK; | |
1514 } |