299 lines
8.6 KiB
C
299 lines
8.6 KiB
C
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#include "cjson/cjson.h"
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#include "lib/fs/fatfs/osal_file.h"
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#include "lib/heap/av_heap.h"
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#include "lib/heap/av_psram_heap.h"
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#include "vfs.h"
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#include "file_thumb.h"
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#include "file_common_api.h"
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/*******************************************************************************
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* 这个文件主要是为了读取图片和缩略图用的,所以文件路径是固定
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*
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******************************************************************************/
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// data申请空间函数
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#define STREAM_MALLOC av_psram_malloc
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#define STREAM_FREE av_psram_free
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#define STREAM_ZALLOC av_psram_zalloc
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// 结构体申请空间函数
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#define STREAM_LIBC_MALLOC av_malloc
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#define STREAM_LIBC_FREE av_free
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#define STREAM_LIBC_ZALLOC av_zalloc
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#define HASH_MOD (9)
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uint32_t calc_hash(const char *filename)
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{
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uint32_t hash = 0;
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const char *h_name = (const char *) filename;
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uint8_t t;
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// 遇到'.'代表后缀名,则不需要计算了
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while (*h_name && (*h_name) != '.')
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{
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t = tolower(*h_name);
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hash = (hash + (hash << 2)) ^ t;
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h_name++;
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}
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hash = hash % HASH_MOD;
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return hash;
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}
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uint32_t calc_hash2(const char *filename, uint32_t *pre_name_len)
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{
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uint32_t hash = 0;
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const char *h_name = (const char *) filename;
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uint8_t t;
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// 遇到'.'代表后缀名,则不需要计算了
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while (*h_name && (*h_name) != '.')
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{
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t = tolower(*h_name);
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hash = (hash + (hash << 2)) ^ t;
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h_name++;
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}
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hash = hash % HASH_MOD;
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if (pre_name_len)
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{
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*pre_name_len = h_name - filename;
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}
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return hash;
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}
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// pathsize后续可以用来判断是否越界的,现在没有用上
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// path保存路径的buf
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uint8_t gen_thumb_path(const char *filename, char *path, uint32_t pathsize)
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{
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uint32_t name_len;
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const char *p;
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p = strrchr(filename, ':');
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if(!p)
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{
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p = filename;
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}
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else
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{
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p++;
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}
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filename = p;
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p = strrchr(p, '/');
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if(p)
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{
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p++;
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}
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else
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{
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p = filename;
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}
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filename = p;
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uint32_t hash = calc_hash2(filename, &name_len);
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os_sprintf((char *) path, THUMB_PATH "/%d/%s", hash, filename);
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// 将后缀名修改成jpg
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uint32_t offset = os_strlen(path) - os_strlen(filename) + name_len;
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path[offset++] = '.';
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path[offset++] = 'J';
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path[offset++] = 'P';
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path[offset++] = 'G';
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os_printf("%s:%d\tpath:%s\n", __FUNCTION__, __LINE__, path);
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return 0;
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}
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uint8_t gen_normal_jpg_path2(const char *filename, char *path, uint32_t pathsize)
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{
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uint32_t name_len;
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calc_hash2(filename, &name_len);
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os_sprintf((char *) path, IMG_PATH "/%s", filename);
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// 将后缀名修改成jpg
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uint32_t offset = os_strlen(path) - os_strlen(filename) + name_len;
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path[offset++] = '.';
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path[offset++] = 'J';
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path[offset++] = 'P';
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path[offset++] = 'G';
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os_printf("%s:%d\tpath:%s\n", __FUNCTION__, __LINE__, path);
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return 0;
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}
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void *jpg_file_read(const char *filename, uint8_t thumb, int32_t *filesize)
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{
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char path[128];
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uint8_t *file_buf = NULL;
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// 寻找缩略图
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if (thumb)
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{
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// 得到缩略图的路径
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gen_thumb_path(filename, path, sizeof(path));
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}
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else
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{
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gen_photo_path(filename, path, sizeof(path));
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}
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// 读取文件
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// int fd = VFS_open((const char *)path,O_RDONLY);
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F_FILE *fd = osal_fopen((const char *) path, "rb");
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// if(fd >= 0)
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if (fd)
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{
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//*filesize = VFS_fsize(fd);
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*filesize = osal_fsize(fd);
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os_printf("filesize:%d\tpath:%s\n", *filesize, path);
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if (*filesize <= 0)
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{
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goto jpg_file_read_end;
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}
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file_buf = STREAM_MALLOC((*filesize));
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os_printf("file_buf:%X\n", file_buf);
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if (!file_buf)
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{
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goto jpg_file_read_end;
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}
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osal_fread(file_buf, 1, *filesize, fd);
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osal_fclose(fd);
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// VFS_read(fd,file_buf,*filesize);
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// VFS_close(fd);
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// fd = -1;
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fd = NULL;
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}
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jpg_file_read_end:
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// if(fd >= 0)
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if (fd)
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{
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// VFS_close(fd);
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osal_fclose(fd);
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}
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return file_buf;
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}
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// 可以释放在buf增加容错
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void jpg_file_free(void *buf)
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{
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if (buf)
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{
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STREAM_FREE(buf);
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}
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}
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/***********************************************
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返回图片的json结构,返回某给后缀名字的文件
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参数:search_dir:搜索的目录
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extension_name:后缀名
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gen_prefix:生成特定前缀
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*count:返回array数量,因为这个返回是文件列表,所以有数量,
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***********************************************/
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cJSON *get_extension_json(const char *search_dir, const char *extension_name, const char *gen_prefix, int type, int *count)
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{
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// fs_dir_t *dir;
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// struct dirent *dent;
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cJSON *array_json = NULL;
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cJSON *path_array = NULL;
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int event_count = 0;
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char path[128];
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FILINFO *fil;
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// DIR dh;
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// dir = VFS_opendir(search_dir);
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void *dir = osal_opendir((char *) search_dir);
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if (dir)
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{
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path_array = cJSON_CreateArray();
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do
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{
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// dent = VFS_readdir(dir);
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fil = osal_readdir(dir);
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if (fil)
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{
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if (osal_dirent_isdir(fil))
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{
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continue;
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}
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// 检查后缀名是否匹配
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uint8_t extension_filename[16]; // 文件后缀名转换,统一大写
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uint8_t extension_name_len = strlen(extension_name);
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char *fname = osal_dirent_name(fil);
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uint8_t filename_len = strlen(fname);
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uint32_t filesize = osal_dirent_size(fil);
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// 进行全部转换成大写
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if (filename_len - extension_name_len > 0)
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{
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for (uint8_t i = 0; i < strlen(extension_name); i++)
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{
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extension_filename[i] = toupper(fname[filename_len - extension_name_len + i]);
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}
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// 后缀名匹配
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if (memcmp(extension_name, extension_filename, extension_name_len) == 0)
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{
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array_json = cJSON_CreateObject();
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os_sprintf((char *) path, "%s%s", gen_prefix, fname);
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cJSON_AddItemToObject(array_json, "name", cJSON_CreateString(path));
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cJSON_AddItemToObject(array_json, "size", cJSON_CreateNumber(filesize / 1024));
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cJSON_AddItemToObject(array_json, "createtimestr", cJSON_CreateString("20250318103006"));
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cJSON_AddItemToObject(array_json, "type", cJSON_CreateNumber(type));
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// 加入到json
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cJSON_AddItemToArray(path_array, array_json);
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event_count++;
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}
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}
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}
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} while (fil);
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// VFS_closedir(dir);
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osal_closedir(dir);
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}
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*count = event_count;
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return path_array;
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}
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char *photo_json_path()
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{
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cJSON *root = NULL;
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cJSON *loop = NULL;
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cJSON *event = NULL;
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cJSON *path_array = NULL;
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cJSON *info_array = cJSON_CreateArray();
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cJSON *video_array = NULL;
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char *json_str = NULL;
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int event_count = 0;
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// 视频这里默认先返回空数据
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loop = cJSON_CreateObject();
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cJSON_AddItemToObject(loop, "folder", cJSON_CreateString("loop"));
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video_array = get_extension_json("0:" MAIN_PATH "/" NORMAL_PATH, MP4_EXTENSION_NAME, "loop/RECA/", 2, &event_count);
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if (video_array)
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{
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cJSON_AddItemToObject(loop, "files", video_array);
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cJSON_AddItemToObject(loop, "count", cJSON_CreateNumber(event_count));
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}
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event = cJSON_CreateObject();
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cJSON_AddItemToObject(event, "folder", cJSON_CreateString("event"));
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path_array = get_extension_json("0:" MAIN_PATH "/" NORMAL_PATH, JPG_EXTENSION_NAME, "event/IMGA/", 1, &event_count);
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if (path_array)
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{
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cJSON_AddItemToObject(event, "files", path_array);
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cJSON_AddItemToObject(event, "count", cJSON_CreateNumber(event_count));
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}
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cJSON_AddItemToArray(info_array, loop);
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cJSON_AddItemToArray(info_array, event);
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root = cJSON_CreateObject();
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cJSON_AddItemToObject(root, "result", cJSON_CreateNumber(0));
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cJSON_AddItemToObject(root, "info", info_array);
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// 生成json数据
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json_str = cJSON_PrintUnformatted(root);
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cJSON_Delete(root);
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return json_str;
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}
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void path_json_free(void *str)
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{
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if (str)
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{
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cJSON_free(str);
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}
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}
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