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patch by Adam Bocim
This commit is contained in:
Igor Sysoev 2011-04-04 09:57:32 +00:00
parent b8fb0a15a2
commit 450c981ab9
1 changed files with 101 additions and 3 deletions
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104
src/http/modules/ngx_http_image_filter_module.c
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@ -16,6 +16,7 @@
#define NGX_HTTP_IMAGE_SIZE 2
#define NGX_HTTP_IMAGE_RESIZE 3
#define NGX_HTTP_IMAGE_CROP 4
#define NGX_HTTP_IMAGE_ROTATE 5
#define NGX_HTTP_IMAGE_START 0
@ -38,12 +39,14 @@ typedef struct {
ngx_uint_t filter;
ngx_uint_t width;
ngx_uint_t height;
ngx_uint_t angle;
ngx_uint_t jpeg_quality;
ngx_flag_t transparency;
ngx_http_complex_value_t *wcv;
ngx_http_complex_value_t *hcv;
ngx_http_complex_value_t *acv;
ngx_http_complex_value_t *jqcv;
size_t buffer_size;
@ -58,9 +61,9 @@ typedef struct {
ngx_uint_t width;
ngx_uint_t height;
ngx_uint_t max_width;
ngx_uint_t max_height;
ngx_uint_t angle;
ngx_uint_t phase;
ngx_uint_t type;
@ -108,7 +111,7 @@ static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf);
static ngx_command_t ngx_http_image_filter_commands[] = {
{ ngx_string("image_filter"),
NGX_HTTP_LOC_CONF|NGX_CONF_TAKE13,
NGX_HTTP_LOC_CONF|NGX_CONF_TAKE13|NGX_CONF_TAKE2,
ngx_http_image_filter,
NGX_HTTP_LOC_CONF_OFFSET,
0,
@ -492,6 +495,17 @@ ngx_http_image_process(ngx_http_request_t *r)
return ngx_http_image_json(r, rc == NGX_OK ? ctx : NULL);
}
ctx->angle = ngx_http_image_filter_get_value(r, conf->acv, conf->angle);
if (conf->filter == NGX_HTTP_IMAGE_ROTATE) {
if (ctx->angle != 90 && ctx->angle != 180 && ctx->angle != 270) {
return NULL;
}
return ngx_http_image_resize(r, ctx);
}
ctx->max_width = ngx_http_image_filter_get_value(r, conf->wcv, conf->width);
if (ctx->max_width == 0) {
return NULL;
@ -506,6 +520,7 @@ ngx_http_image_process(ngx_http_request_t *r)
if (rc == NGX_OK
&& ctx->width <= ctx->max_width
&& ctx->height <= ctx->max_height
&& ctx->angle == 0
&& !ctx->force)
{
return ngx_http_image_asis(r, ctx);
@ -710,7 +725,7 @@ ngx_http_image_resize(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx)
{
int sx, sy, dx, dy, ox, oy, size,
colors, palette, transparent,
red, green, blue;
red, green, blue, t;
u_char *out;
ngx_buf_t *b;
ngx_uint_t resize;
@ -730,6 +745,7 @@ ngx_http_image_resize(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx)
conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
if (!ctx->force
&& ctx->angle == 0
&& (ngx_uint_t) sx <= ctx->max_width
&& (ngx_uint_t) sy <= ctx->max_height)
{
@ -781,6 +797,10 @@ transparent:
resize = 1;
} else if (conf->filter == NGX_HTTP_IMAGE_ROTATE) {
resize = 0;
} else { /* NGX_HTTP_IMAGE_CROP */
resize = 0;
@ -829,6 +849,38 @@ transparent:
dst = src;
}
if (ctx->angle) {
src = dst;
switch (ctx->angle) {
case 90:
case 270:
dst = ngx_http_image_new(r, dy, dx, palette);
if (dst == NULL) {
gdImageDestroy(src);
return NULL;
}
gdImageCopyRotated(dst, src, dy/2, dx/2, 0, 0, dx, dy, ctx->angle);
gdImageDestroy(src);
break;
case 180:
dst = ngx_http_image_new(r, dx, dy, palette);
if (dst == NULL) {
gdImageDestroy(src);
return NULL;
}
gdImageCopyRotated(dst, src, dx/2, dy/2, 0, 0, dx, dy, ctx->angle);
gdImageDestroy(src);
break;
}
t = dx;
dx = dy;
dy = t;
}
if (conf->filter == NGX_HTTP_IMAGE_CROP) {
src = dst;
@ -1090,6 +1142,7 @@ ngx_http_image_filter_create_conf(ngx_conf_t *cf)
conf->filter = NGX_CONF_UNSET_UINT;
conf->jpeg_quality = NGX_CONF_UNSET_UINT;
conf->angle = NGX_CONF_UNSET_UINT;
conf->transparency = NGX_CONF_UNSET;
conf->buffer_size = NGX_CONF_UNSET_SIZE;
@ -1124,6 +1177,11 @@ ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
conf->jqcv = prev->jqcv;
}
ngx_conf_merge_uint_value(conf->angle, prev->angle, 0);
if (conf->acv == NULL) {
conf->acv = prev->acv;
}
ngx_conf_merge_value(conf->transparency, prev->transparency, 1);
ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,
@ -1163,6 +1221,46 @@ ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
}
return NGX_CONF_OK;
} else if (cf->args->nelts == 3) {
if (ngx_strcmp(value[i].data, "rotate") == 0) {
imcf->filter = NGX_HTTP_IMAGE_ROTATE;
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[++i];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
n = ngx_http_image_filter_value(&value[i]);
if (n != 90 && n != 180 && n != 270) {
goto failed;
}
imcf->angle = (ngx_uint_t) n;
} else {
imcf->acv = ngx_palloc(cf->pool,
sizeof(ngx_http_complex_value_t));
if (imcf->acv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->acv = cv;
}
return NGX_CONF_OK;
} else {
goto failed;
}
}
if (ngx_strcmp(value[i].data, "resize") == 0) {