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image_filter_jpeg_quality supports variables

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This commit is contained in:
Igor Sysoev 2010-08-06 15:55:05 +00:00
parent 7268cc8c6e
commit d39b9ec19d
1 changed files with 67 additions and 6 deletions
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73
src/http/modules/ngx_http_image_filter_module.c
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@ -38,12 +38,13 @@ typedef struct {
ngx_uint_t filter;
ngx_uint_t width;
ngx_uint_t height;
ngx_int_t jpeg_quality;
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 *jqcv;
size_t buffer_size;
} ngx_http_image_filter_conf_t;
@ -99,6 +100,8 @@ static char *ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent,
void *child);
static char *ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf);
@ -113,9 +116,9 @@ static ngx_command_t ngx_http_image_filter_commands[] = {
{ ngx_string("image_filter_jpeg_quality"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
ngx_http_image_filter_jpeg_quality,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_image_filter_conf_t, jpeg_quality),
0,
NULL },
{ ngx_string("image_filter_transparency"),
@ -989,6 +992,7 @@ ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, gdImagePtr img,
{
char *failed;
u_char *out;
ngx_int_t jq;
ngx_http_image_filter_conf_t *conf;
out = NULL;
@ -997,7 +1001,13 @@ ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, gdImagePtr img,
case NGX_HTTP_IMAGE_JPEG:
conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module);
out = gdImageJpegPtr(img, size, conf->jpeg_quality);
jq = ngx_http_image_filter_get_value(r, conf->jqcv, conf->jpeg_quality);
if (jq <= 0) {
return NULL;
}
out = gdImageJpegPtr(img, size, jq);
failed = "gdImageJpegPtr() failed";
break;
@ -1079,7 +1089,7 @@ ngx_http_image_filter_create_conf(ngx_conf_t *cf)
}
conf->filter = NGX_CONF_UNSET_UINT;
conf->jpeg_quality = NGX_CONF_UNSET;
conf->jpeg_quality = NGX_CONF_UNSET_UINT;
conf->transparency = NGX_CONF_UNSET;
conf->buffer_size = NGX_CONF_UNSET_SIZE;
@ -1108,7 +1118,11 @@ ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
}
/* 75 is libjpeg default quality */
ngx_conf_merge_value(conf->jpeg_quality, prev->jpeg_quality, 75);
ngx_conf_merge_uint_value(conf->jpeg_quality, prev->jpeg_quality, 75);
if (conf->jqcv == NULL) {
conf->jqcv = prev->jqcv;
}
ngx_conf_merge_value(conf->transparency, prev->transparency, 1);
@ -1228,6 +1242,53 @@ failed:
}
static char *
ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf)
{
ngx_http_image_filter_conf_t *imcf = conf;
ngx_str_t *value;
ngx_int_t n;
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) {
n = ngx_http_image_filter_value(&value[1]);
if (n <= 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[1]);
return NGX_CONF_ERROR;
}
imcf->jpeg_quality = (ngx_uint_t) n;
} else {
imcf->jqcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->jqcv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->jqcv = cv;
}
return NGX_CONF_OK;
}
static ngx_int_t
ngx_http_image_filter_init(ngx_conf_t *cf)
{