API | Description |
Allows you to easily convert images into formats that provide a high compression ratio, such as TPG and HEIF. This effectively reduces the transfer time, loading time, and the use of bandwidth and traffic. |
imageMogr2/format/<Format>
Parameter | Description |
format | Target compression format, which can be TPG or HEIF for thumbnails. |
#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"#include <unistd.h>// `endpoint` is the COS access domain name. For more information, visit https://www.tencentcloud.com/document/product/436/6224.static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// A developer-owned secret ID/key used for the project. It can be obtained at https://console.tencentcloud.com/cam/capi.static char *TEST_ACCESS_KEY_ID; //your secret_idstatic char *TEST_ACCESS_KEY_SECRET; //your secret_key// A unique user-level resource identifier for COS access. It can be obtained at https://console.tencentcloud.com/cam/capi.static char TEST_APPID[] = "<APPID>"; //your appid// COS bucket name in the format of [bucket]-[appid], for example, `mybucket-1253666666`. It can be obtained at https://console.tencentcloud.com/cos5/bucket.static char TEST_BUCKET_NAME[] = "<bucketname-appid>";void log_status(cos_status_t *s){cos_warn_log("status->code: %d", s->code);if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}void init_test_config(cos_config_t *config, int is_cname){cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);cos_str_set(&config->appid, TEST_APPID);config->is_cname = is_cname;}void init_test_request_options(cos_request_options_t *options, int is_cname){options->config = cos_config_create(options->pool);init_test_config(options->config, is_cname);options->ctl = cos_http_controller_create(options->pool, 0);}void test_image_compress(){cos_pool_t *p = NULL;int is_cname = 0;cos_status_t *s = NULL;cos_request_options_t *options = NULL;cos_string_t bucket;cos_string_t object;cos_string_t file;cos_table_t *resp_headers;cos_table_t *params = NULL;cos_pool_create(&p, NULL);options = cos_request_options_create(p);init_test_request_options(options, is_cname);cos_str_set(&bucket, TEST_BUCKET_NAME);params = cos_table_make(p, 1);apr_table_addn(params, "imageMogr2/format/tpg", "");cos_str_set(&object, "test.jpg");cos_str_set(&file, "test.tpg");s = cos_get_object_to_file(options, &bucket, &object, NULL, params, &file, &resp_headers);log_status(s);if (!cos_status_is_ok(s)) {printf("cos_get_object_to_file fail, req_id:%s\\n", s->req_id);}params = cos_table_make(p, 1);apr_table_addn(params, "imageMogr2/format/heif", "");cos_str_set(&file, "test.heif");s = cos_get_object_to_file(options, &bucket, &object, NULL, params, &file, &resp_headers);log_status(s);if (!cos_status_is_ok(s)) {printf("cos_get_object_to_file fail, req_id:%s\\n", s->req_id);}cos_pool_destroy(p);}int main(int argc, char *argv[]){// Get `SECRETID` and `SECRETKEY` from environment variablesTEST_ACCESS_KEY_ID = getenv("COS_SECRETID");TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");if (cos_http_io_initialize(NULL, 0) != COSE_OK) {exit(1);}//set log level, default COS_LOG_WARNcos_log_set_level(COS_LOG_WARN);//set log output, default stderrcos_log_set_output(NULL);test_image_compress();cos_http_io_deinitialize();return 0;}
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