简介
本文档提供关于图片二维码相关的 API 概览以及 SDK 示例代码。
API | 操作描述 |
---|---|
二维码识别 | 二维码识别功能可识别图片中有效二维码的位置及内容,输出图像中二维码包含的文本信息(每个二维码对应的 URL 或文本),并可对识别出的二维码添加马赛克 |
二维码识别
二维码识别功能可识别图片中有效二维码的位置及内容,输出图像中二维码包含的文本信息(每个二维码对应的 URL 或文本),并可对识别出的二维码添加马赛克。
上传时识别
方法原型
cos_status_t *ci_put_object_from_file(const cos_request_options_t *options,
const cos_string_t *bucket,
const cos_string_t *object,
const cos_string_t *filename,
cos_table_t *headers,
cos_table_t **resp_headers,
ci_operation_result_t **results)
功能说明
图片上传时识别二维码的请求包与 COS 简单上传文件接口一致,只需在请求包头部增加图片处理参数 Pic-Operations。
请求示例
#include "cos_http_io.h"
#include "cos_api.h"
#include "cos_log.h"
#include <unistd.h>
// 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";
// 数据万象的访问域名,详情请参见 https://cloud.tencent.com/document/product/460/31066 文档
static char TEST_CI_ENDPOINT[] = "https://ci.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_id
static 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[] = "<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[] = "<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_ci_image_qrcode()
{
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 *headers = NULL;
ci_operation_result_t *results = NULL;
ci_qrcode_info_t *content = 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);
cos_str_set(&object, "test.jpg");
headers = cos_table_make(p, 1);
apr_table_addn(headers, "pic-operations", "{\"is_pic_info\":1,\"rules\":[{\"fileid\":\"test.png\",\"rule\":\"QRcode/cover/1\"}]}");
// 上传时识别
cos_str_set(&file, "test.jpg");
cos_str_set(&object, "test.jpg");
s = ci_put_object_from_file(options, &bucket, &object, &file, headers, &resp_headers, &results);
log_status(s);
if (!cos_status_is_ok(s)) {
printf("put object failed\n");
}
printf("CodeStatus: %d\n", results->object.code_status);
cos_list_for_each_entry(ci_qrcode_info_t, content, &results->object.qrcode_info, node) {
printf("CodeUrl: %s\n", content->code_url.data);
printf("Point: %s\n", content->point[0].data);
printf("Point: %s\n", content->point[1].data);
printf("Point: %s\n", content->point[2].data);
printf("Point: %s\n", content->point[3].data);
}
//销毁内存池
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_ci_image_qrcode();
cos_http_io_deinitialize();
return 0;
}
参数说明
参数名称 | 参数描述 | 类型 |
---|---|---|
options | COS 请求选项 | Struct |
bucket | 存储桶名称,存储桶的命名格式为 BucketName-APPID,此处填写的存储桶名称必须为此格式 | String |
object | Object 名称 | String |
filename | Object 本地保存文件名称 | String |
headers | COS 请求附加头域 | Struct |
resp_headers | 返回 HTTP 响应消息的头域 | Struct |
results | 云上数据处理返回信息 | Struct |
下载时识别
功能说明
下载文件时进行二维码识别。
方法原型
cos_status_t *ci_get_qrcode(const cos_request_options_t *options,
const cos_string_t *bucket,
const cos_string_t *object,
int cover,
cos_table_t *headers,
cos_table_t *query_params,
cos_table_t **resp_headers,
ci_qrcode_result_t **results)
请求示例
#include "cos_http_io.h"
#include "cos_api.h"
#include "cos_log.h"
#include <unistd.h>
// 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";
// 数据万象的访问域名,详情请参见 https://cloud.tencent.com/document/product/460/31066 文档
static char TEST_CI_ENDPOINT[] = "https://ci.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_id
static 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[] = "<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[] = "<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_ci_get_image_qrcode()
{
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_table_t *resp_headers;
ci_qrcode_info_t *content = NULL;
ci_qrcode_result_t *result2 = 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);
cos_str_set(&object, "test.jpg");
// 下载时识别
s = ci_get_qrcode(options, &bucket, &object, 1, NULL, NULL, &resp_headers, &result2);
log_status(s);
if (!cos_status_is_ok(s)) {
printf("get object failed\n");
}
printf("CodeStatus: %d\n", result2->code_status);
cos_list_for_each_entry(ci_qrcode_info_t, content, &result2->qrcode_info, node) {
printf("CodeUrl: %s\n", content->code_url.data);
printf("Point: %s\n", content->point[0].data);
printf("Point: %s\n", content->point[1].data);
printf("Point: %s\n", content->point[2].data);
printf("Point: %s\n", content->point[3].data);
}
printf("ImageResult: %s\n", result2->result_image.data);
//销毁内存池
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_ci_get_image_qrcode();
cos_http_io_deinitialize();
return 0;
}
参数说明
参数名称 | 参数描述 | 类型 |
---|---|---|
options | COS 请求选项 | Struct |
bucket | 存储桶名称,Bucket 的命名规则为 BucketName-APPID,此处填写的存储桶名称必须为此格式 | string |
object | Object 名称 | string |
cover | 二维码覆盖功能,对识别出的二维码覆盖上马赛克。取值为0或1。0表示不开启二维码覆盖,1表示开启二维码覆盖 | int |
headers | COS 请求附加头域 | Struct |
query_params | COS 请求操作参数 | Struct |
resp_headers | 返回 HTTP 响应消息的头域 | Struct |
results | 二维码识别结果 | Struct |