import math
import torch
import numpy as np

import os
import time
import cv2
import glob
import pickle
import copy

import queue
from queue import Queue
from threading import Thread, Event
from io import BytesIO
import soundfile as sf

from tqdm import tqdm
def read_imgs(img_list):
    frames = []
    print('reading images...')
    for img_path in tqdm(img_list):
        frame = cv2.imread(img_path)
        frames.append(frame)
    return frames

class BaseReal:
    def __init__(self, opt):
        self.opt = opt
        self.sample_rate = 16000
        self.chunk = self.sample_rate // opt.fps # 320 samples per chunk (20ms * 16000 / 1000)

        self.curr_state=0
        self.custom_img_cycle = {}
        self.custom_audio_cycle = {}
        self.custom_audio_index = {}
        self.custom_index = {}
        self.custom_opt = {}
        self.__loadcustom()
    
    def __loadcustom(self):
        for item in self.opt.customopt:
            print(item)
            input_img_list = glob.glob(os.path.join(item['imgpath'], '*.[jpJP][pnPN]*[gG]'))
            input_img_list = sorted(input_img_list, key=lambda x: int(os.path.splitext(os.path.basename(x))[0]))
            self.custom_img_cycle[item['audiotype']] = read_imgs(input_img_list)
            self.custom_audio_cycle[item['audiotype']], sample_rate = sf.read(item['audiopath'], dtype='float32')
            self.custom_audio_index[item['audiotype']] = 0
            self.custom_index[item['audiotype']] = 0
            self.custom_opt[item['audiotype']] = item
    
    def mirror_index(self,size, index):
        #size = len(self.coord_list_cycle)
        turn = index // size
        res = index % size
        if turn % 2 == 0:
            return res
        else:
            return size - res - 1 
    
    def get_audio_stream(self,audiotype):
        idx = self.custom_audio_index[audiotype]
        stream = self.custom_audio_cycle[audiotype][idx:idx+self.chunk]
        self.custom_audio_index[audiotype] += self.chunk
        if self.custom_audio_index[audiotype]>=stream.shape[0]:
            self.curr_state = 1  #当前视频不循环播放，切换到静音状态
        return stream
    
    def set_curr_state(self,audiotype, reinit):
        self.curr_state = audiotype
        if reinit:
            self.custom_audio_index[audiotype] = 0
            self.custom_index[audiotype] = 0
    
    # def process_custom(self,audiotype:int,idx:int):
    #     if self.curr_state!=audiotype: #从推理切到口播
    #         if idx in self.switch_pos:  #在卡点位置可以切换
    #             self.curr_state=audiotype
    #             self.custom_index=0
    #     else:
    #         self.custom_index+=1