腾讯云对象存储图片高级压缩

简介

本文档提供关于图片高级压缩的 API 概览以及 SDK 示例代码。

方法原型

通过下载对象方法实现，用户只需要添加请求参数，请求参数格式如下，关于下载对象详细说明请参见 下载对象。

imageMogr2/format/<Format>

请求示例

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"#include 
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = ""; 
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[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_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_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_image_compress();
    cos_http_io_deinitialize();
    return 0;}

说明：腾讯云数据万象提供集成 TPG、AVIF 解码器的 iOS、Android、Windows 终端 SDK，您只需在您的客户端进行集成，即可实现对 TPG 和 AVIF 的解码预览。

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