text: /* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  ==============================================================================*/
  
  #include "app_camera_esp.h"
  
  static const char *TAG = "app_camera_esp";
  
  int app_camera_init() {
  #if CONFIG_CAMERA_MODEL_ESP_EYE
    /* IO13, IO14 is designed for JTAG by default,
     * to use it as generalized input,
     * firstly declair it as pullup input */
    gpio_config_t conf;
    conf.mode = GPIO_MODE_INPUT;
    conf.pull_up_en = GPIO_PULLUP_ENABLE;
    conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
    conf.intr_type = GPIO_INTR_DISABLE;
    conf.pin_bit_mask = 1LL << 13;
    gpio_config(&conf);
    conf.pin_bit_mask = 1LL << 14;
    gpio_config(&conf);
  #endif
    // camera_config_t config;
    // config.ledc_channel = LEDC_CHANNEL_0;
    // config.ledc_timer = LEDC_TIMER_0;
    // config.pin_d0 = Y2_GPIO_NUM;
    // config.pin_d1 = Y3_GPIO_NUM;
    // config.pin_d2 = Y4_GPIO_NUM;
    // config.pin_d3 = Y5_GPIO_NUM;
    // config.pin_d4 = Y6_GPIO_NUM;
    // config.pin_d5 = Y7_GPIO_NUM;
    // config.pin_d6 = Y8_GPIO_NUM;
    // config.pin_d7 = Y9_GPIO_NUM;
    // config.pin_xclk = XCLK_GPIO_NUM;
    // config.pin_pclk = PCLK_GPIO_NUM;
    // config.pin_vsync = VSYNC_GPIO_NUM;
    // config.pin_href = HREF_GPIO_NUM;
    // config.pin_sscb_sda = SIOD_GPIO_NUM;
    // config.pin_sscb_scl = SIOC_GPIO_NUM;
    // config.pin_pwdn = PWDN_GPIO_NUM;
    // config.pin_reset = -1;  // RESET_GPIO_NUM;
    // config.xclk_freq_hz = XCLK_FREQ;
    // config.pixel_format = CAMERA_PIXEL_FORMAT;
    // config.frame_size = CAMERA_FRAME_SIZE;
    // config.jpeg_quality = 10;
    // config.fb_count = 1;
    
    camera_config_t config;
    config.ledc_channel = LEDC_CHANNEL_0;
    config.ledc_timer = LEDC_TIMER_0;
    config.pin_d0 = Y2_GPIO_NUM;
    config.pin_d1 = Y3_GPIO_NUM;
    config.pin_d2 = Y4_GPIO_NUM;
    config.pin_d3 = Y5_GPIO_NUM;
    config.pin_d4 = Y6_GPIO_NUM;
    config.pin_d5 = Y7_GPIO_NUM;
    config.pin_d6 = Y8_GPIO_NUM;
    config.pin_d7 = Y9_GPIO_NUM;
    config.pin_xclk = XCLK_GPIO_NUM;
    config.pin_pclk = PCLK_GPIO_NUM;
    config.pin_vsync = VSYNC_GPIO_NUM;
    config.pin_href = HREF_GPIO_NUM;
    config.pin_sscb_sda = SIOD_GPIO_NUM;
    config.pin_sscb_scl = SIOC_GPIO_NUM;
    config.pin_pwdn = PWDN_GPIO_NUM;
    config.pin_reset = RESET_GPIO_NUM;
    config.xclk_freq_hz = 20000000;
    config.pixel_format = PIXFORMAT_JPEG;
    
    //init with high specs to pre-allocate larger buffers
   
    //config.frame_size = FRAMESIZE_UXGA;
    //config.jpeg_quality = 10;
    //config.fb_count = 2;
  	
  	// init without high specs
  	config.frame_size = FRAMESIZE_SVGA;
      config.jpeg_quality = 12;
      config.fb_count = 1;
  
  
    // camera init
    esp_err_t err = esp_camera_init(&config);
    if (err != ESP_OK) {
      ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
      return -1;
    }
    return 0;
  }
  