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esp-who/examples/single_chip/recognition_wechat/main/app_httpserver.c

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/* ESPRESSIF MIT License
*
* Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
*
* Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in which case,
* it is free of charge, to any person obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "app_httpserver.h"
#include "esp_log.h"
#include "image_util.h"
#include "fb_gfx.h"
#include "app_main.h"
static const char *TAG = "app_httpserver";
#define FACE_COLOR_WHITE 0x00FFFFFF
#define FACE_COLOR_BLACK 0x00000000
#define FACE_COLOR_RED 0x000000FF
#define FACE_COLOR_GREEN 0x0000FF00
#define FACE_COLOR_BLUE 0x00FF0000
#define FACE_COLOR_YELLOW (FACE_COLOR_RED | FACE_COLOR_GREEN)
#define FACE_COLOR_CYAN (FACE_COLOR_BLUE | FACE_COLOR_GREEN)
#define FACE_COLOR_PURPLE (FACE_COLOR_BLUE | FACE_COLOR_RED)
#define PART_BOUNDARY "123456789000000000000987654321"
static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";
extern face_id_name_list st_face_list;
static int8_t g_is_enrolling = 0;
static int8_t g_stop_stream = 0;
static int8_t g_detection_enabled = 0;
static int8_t g_recognition_enabled = 0;
typedef struct
{
char enroll_name[ENROLL_NAME_LEN];
} httpd_resp_value;
httpd_resp_value st_name;
QueueHandle_t gpst_input_image = NULL;
QueueHandle_t gpst_output = NULL;
// Profiling
static int64_t fr_start = 0;
static int64_t fr_ready = 0;
static int64_t fr_face = 0;
static int64_t fr_recognize = 0;
static int64_t fr_encode = 0;
//static void oneshot_timer_callback(void* arg);
char *number_suffix(int32_t number)
{
uint8_t n = number % 10;
if (n == 0)
return "zero";
else if (n == 1)
return "st";
else if (n == 2)
return "nd";
else if (n == 3)
return "rd";
else
return "th";
}
static void rgb_print(void *image, int w, int h, uint32_t color, const char * str){
fb_data_t fb;
fb.width = w;
fb.height = h;
fb.data = image;
fb.bytes_per_pixel = 3;
fb.format = FB_BGR888;
fb_gfx_print(&fb, (fb.width - (strlen(str) * 14)) / 2, 10, color, str);
}
static int rgb_printf(void *image, int w, int h, uint32_t color, const char *format, ...)
{
char loc_buf[64];
char * temp = loc_buf;
int len;
va_list arg;
va_list copy;
va_start(arg, format);
va_copy(copy, arg);
len = vsnprintf(loc_buf, sizeof(loc_buf), format, arg);
va_end(copy);
if(len >= sizeof(loc_buf)){
temp = (char*)malloc(len+1);
if(temp == NULL) {
return 0;
}
}
vsnprintf(temp, len+1, format, arg);
va_end(arg);
rgb_print(image, w, h, color, temp);
if(len > 64){
free(temp);
}
return len;
}
static void draw_face_boxes(void *image, int width, int height, box_array_t *boxes){
int x, y, w, h, i;
uint32_t color = FACE_COLOR_YELLOW;
fb_data_t fb;
fb.width = width;
fb.height = height;
fb.data = image;
fb.bytes_per_pixel = 3;
fb.format = FB_BGR888;
for (i = 0; i < boxes->len; i++){
// rectangle box
x = (int)boxes->box[i].box_p[0];
y = (int)boxes->box[i].box_p[1];
w = (int)boxes->box[i].box_p[2] - x + 1;
h = (int)boxes->box[i].box_p[3] - y + 1;
fb_gfx_drawFastHLine(&fb, x, y, w, color);
fb_gfx_drawFastHLine(&fb, x, y+h-1, w, color);
fb_gfx_drawFastVLine(&fb, x, y, h, color);
fb_gfx_drawFastVLine(&fb, x+w-1, y, h, color);
#if 0
// landmark
int x0, y0, j;
for (j = 0; j < 10; j+=2) {
x0 = (int)boxes->landmark[i].landmark_p[j];
y0 = (int)boxes->landmark[i].landmark_p[j+1];
fb_gfx_fillRect(&fb, x0, y0, 3, 3, color);
}
#endif
}
}
static inline int do_enrollment(face_id_name_list *face_list, dl_matrix3d_t *new_id)
{
ESP_LOGD(TAG, "START ENROLLING");
int left_sample_face = enroll_face_id_to_flash_with_name(face_list, new_id, st_name.enroll_name);
ESP_LOGD(TAG, "Face ID %s Enrollment: Taken the %d%s sample",
face_list->tail->id_name,
ENROLL_CONFIRM_TIMES - left_sample_face,
number_suffix(ENROLL_CONFIRM_TIMES - left_sample_face));
gpio_set_level(GPIO_LED_RED, 0);
return left_sample_face;
}
esp_err_t facenet_stream_handler(httpd_req_t *req)
{
esp_err_t res = ESP_OK;
g_state = START_STREAM;
g_stop_stream = 0;
camera_fb_t * fb = NULL;
size_t _jpg_buf_len = 0;
uint8_t * _jpg_buf = NULL;
char * part_buf[64];
http_img_process_result out_res = {0};
static int64_t last_frame = 0;
if(!last_frame) {
last_frame = esp_timer_get_time();
}
res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
if(res != ESP_OK){
return res;
}
ESP_LOGI(TAG, "Get count %d\n", st_face_list.count);
while(true)
{
// update fsm state
if (g_stop_stream)
{
g_stop_stream = 0;
httpd_resp_send_404(req);
break;
}
else if (g_is_enrolling)
{
g_state = START_ENROLL;
}
else if (g_recognition_enabled && (st_face_list.count > 0))
{
g_state = START_RECOGNITION;
}
else if (g_detection_enabled)
{
g_state = START_DETECT;
}
else
{
g_state = START_STREAM;
}
ESP_LOGD(TAG, "State: %d, count:%d", g_state, st_face_list.count);
// exec event
fb = esp_camera_fb_get();
if (!fb)
{
ESP_LOGE(TAG, "Camera capture failed");
res = ESP_FAIL;
break;
}
if (g_state == START_STREAM)
{
_jpg_buf = fb->buf;
_jpg_buf_len = fb->len;
goto http_response;
}
fr_start = esp_timer_get_time();
fr_ready = fr_start;
fr_face = fr_start;
fr_encode = fr_start;
fr_recognize = fr_start;
xQueueSend(gpst_input_image, &fb, portMAX_DELAY);
xQueueReceive(gpst_output, &out_res, portMAX_DELAY);
fr_recognize = fr_face;
if (out_res.net_boxes)
{
draw_face_boxes(out_res.image, fb->width, fb->height, out_res.net_boxes);
free(out_res.net_boxes->score);
free(out_res.net_boxes->box);
free(out_res.net_boxes->landmark);
free(out_res.net_boxes);
if (out_res.face_id)
{
if (g_state == START_ENROLL)
{
int left_sample_face = do_enrollment(&st_face_list, out_res.face_id);
rgb_print(out_res.image, fb->width, fb->height, FACE_COLOR_YELLOW, "START ENROLLING");
rgb_printf(out_res.image, fb->width, fb->height, FACE_COLOR_CYAN, "\nThe %u%s sample",
ENROLL_CONFIRM_TIMES - left_sample_face,
number_suffix(ENROLL_CONFIRM_TIMES - left_sample_face));
if (left_sample_face == 0)
{
ESP_LOGI(TAG, "Enrolled Face ID: %s", st_face_list.tail->id_name);
rgb_printf(out_res.image, fb->width, fb->height, FACE_COLOR_CYAN, "\n\nFace ID: %s", st_face_list.tail->id_name);
g_is_enrolling = 0;
g_state = START_RECOGNITION;
}
}
else
{
face_id_node *f = recognize_face_with_name(&st_face_list, out_res.face_id);
if (f)
{
gpio_set_level(GPIO_LED_RED, 1);
rgb_printf(out_res.image, fb->width, fb->height, FACE_COLOR_GREEN, "Hello %s", f->id_name);
}
else
{
rgb_print(out_res.image, fb->width, fb->height, FACE_COLOR_RED, "\nWHO?");
}
} // START_ENROLL
dl_matrix3d_free(out_res.face_id);
}
//xSemaphoreGive(out_res.lock);
if(!fmt2jpg(out_res.image, fb->width*fb->height*3, fb->width, fb->height, PIXFORMAT_RGB888, 90, &_jpg_buf, &_jpg_buf_len))
{
ESP_LOGE(TAG, "fmt2jpg failed");
}
esp_camera_fb_return(fb);
fb = NULL;
}
else
{
_jpg_buf = fb->buf;
_jpg_buf_len = fb->len;
}
fr_encode = esp_timer_get_time();
http_response:
if(res == ESP_OK){
size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
}
if(res == ESP_OK){
res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
}
if(res == ESP_OK){
res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
}
if(fb){
esp_camera_fb_return(fb);
fb = NULL;
_jpg_buf = NULL;
} else if(_jpg_buf){
free(_jpg_buf);
_jpg_buf = NULL;
}
if(res != ESP_OK){
break;
}
int64_t fr_end = esp_timer_get_time();
//int64_t ready_time = (fr_ready - fr_start)/1000;
//int64_t face_time = (fr_face - fr_ready)/1000;
//int64_t recognize_time = (fr_recognize - fr_face)/1000;
//int64_t encode_time = (fr_encode - fr_recognize)/1000;
int64_t process_time = (fr_encode - fr_start)/1000;
int64_t frame_time = fr_end - last_frame;
last_frame = fr_end;
frame_time /= 1000;
ESP_LOGI(TAG, "MJPG: %uKB %ums (%.1ffps), process: %u",
(uint32_t)(_jpg_buf_len/1024),
(uint32_t)frame_time, 1000.0 / (uint32_t)frame_time,
(uint32_t)process_time);
}
last_frame = 0;
g_state = WAIT_FOR_CONNECT;
return ESP_OK;
}
httpd_uri_t _face_stream_handler = {
.uri = "/stream",
.method = HTTP_GET,
.handler = facenet_stream_handler,
.user_ctx = NULL
};
static esp_err_t cmd_handler(httpd_req_t *req){
char* buf;
size_t buf_len;
char variable[32] = {0,};
char value[FACE_ID_SAVE_NUMBER * ENROLL_NAME_LEN] = {0,};
buf_len = httpd_req_get_url_query_len(req) + 1;
if (buf_len > 1) {
buf = (char*)malloc(buf_len);
if(!buf){
httpd_resp_send_500(req);
return ESP_FAIL;
}
if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
if (httpd_query_key_value(buf, "var", variable, sizeof(variable)) == ESP_OK &&
httpd_query_key_value(buf, "val", value, sizeof(value)) == ESP_OK) {
} else {
free(buf);
httpd_resp_send_404(req);
return ESP_FAIL;
}
} else {
free(buf);
httpd_resp_send_404(req);
return ESP_FAIL;
}
free(buf);
} else {
httpd_resp_send_404(req);
return ESP_FAIL;
}
int val = atoi(value);
ESP_LOGI(TAG, "%s = %d", variable, val);
sensor_t * s = esp_camera_sensor_get();
int res = 0;
if(!strcmp(variable, "framesize")) {
if(s->pixformat == PIXFORMAT_JPEG) res = s->set_framesize(s, (framesize_t)val);
}
else if(!strcmp(variable, "quality")) res = s->set_quality(s, val);
else if(!strcmp(variable, "contrast")) res = s->set_contrast(s, val);
else if(!strcmp(variable, "brightness")) res = s->set_brightness(s, val);
else if(!strcmp(variable, "saturation")) res = s->set_saturation(s, val);
else if(!strcmp(variable, "gainceiling")) res = s->set_gainceiling(s, (gainceiling_t)val);
else if(!strcmp(variable, "colorbar")) res = s->set_colorbar(s, val);
else if(!strcmp(variable, "awb")) res = s->set_whitebal(s, val);
else if(!strcmp(variable, "agc")) res = s->set_gain_ctrl(s, val);
else if(!strcmp(variable, "aec")) res = s->set_exposure_ctrl(s, val);
else if(!strcmp(variable, "hmirror")) res = s->set_hmirror(s, val);
else if(!strcmp(variable, "vflip")) res = s->set_vflip(s, val);
else if(!strcmp(variable, "awb_gain")) res = s->set_awb_gain(s, val);
else if(!strcmp(variable, "agc_gain")) res = s->set_agc_gain(s, val);
else if(!strcmp(variable, "aec_value")) res = s->set_aec_value(s, val);
else if(!strcmp(variable, "aec2")) res = s->set_aec2(s, val);
else if(!strcmp(variable, "dcw")) res = s->set_dcw(s, val);
else if(!strcmp(variable, "bpc")) res = s->set_bpc(s, val);
else if(!strcmp(variable, "wpc")) res = s->set_wpc(s, val);
else if(!strcmp(variable, "raw_gma")) res = s->set_raw_gma(s, val);
else if(!strcmp(variable, "lenc")) res = s->set_lenc(s, val);
else if(!strcmp(variable, "special_effect")) res = s->set_special_effect(s, val);
else if(!strcmp(variable, "wb_mode")) res = s->set_wb_mode(s, val);
else if(!strcmp(variable, "ae_level")) res = s->set_ae_level(s, val);
else if(!strcmp(variable, "stop_stream")) g_stop_stream = 1;
else if(!strcmp(variable, "face_detect")) {
g_detection_enabled = val;
if(!g_detection_enabled) {
g_recognition_enabled = 0;
g_is_enrolling = 0;
}
}
else if(!strcmp(variable, "face_enroll"))
{
if (!g_is_enrolling && g_recognition_enabled)
{
memcpy(st_name.enroll_name, value, strlen(value) + 1);
g_is_enrolling = 1;
}
}
else if(!strcmp(variable, "face_delete"))
{
// ["aaa","bbb"]
char delete_name[ENROLL_NAME_LEN * FACE_ID_SAVE_NUMBER];
uint8_t len = strlen(value) - strlen("%5b%22") - strlen("%22%5d");
memcpy(delete_name, value + strlen("%5b%22"), len);
delete_name[len] = 0;
char *p = delete_name;
char *q = NULL;
do
{
q = strstr(p, "%22%2C%22");
if (!q)
break;
p[q - p] = 0;
int8_t left = delete_face_id_in_flash_with_name(&st_face_list, p);
if (left > 0)
ESP_LOGW(TAG, "%s ID Delete", p);
p = q + 9;
q = strstr(p, "%22%2C%22");
} while (q);
int8_t left = delete_face_id_in_flash_with_name(&st_face_list, p);
if (left > 0)
ESP_LOGW(TAG, "%s ID Delete", p);
}
else if(!strcmp(variable, "delete_all"))
{
delete_face_all_in_flash_with_name(&st_face_list);
}
else if(!strcmp(variable, "face_recognize")) {
g_recognition_enabled = val;
if(g_recognition_enabled){
g_detection_enabled = val;
}
}
else if(!strcmp(variable, "get_id")) {
static char id_json[1024];
char *p = id_json;
*p++ = '{';
p += sprintf(p, "\"len\":%d,", st_face_list.count);
p += sprintf(p, "\"list\":[");
face_id_node *head = st_face_list.head;
for (int i = 0; i < st_face_list.count; i++)
{
p += sprintf(p, "\"%s\",", head->id_name);
head = head->next;
}
if (st_face_list.count)
p--;
*p++ = ']';
*p++ = '}';
*p++ = 0;
httpd_resp_set_type(req, "application/json");
httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
return httpd_resp_send(req, id_json, strlen(id_json));
}
else {
res = -1;
}
if(res){
return httpd_resp_send_500(req);
}
httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
return httpd_resp_send(req, NULL, 0);
}
httpd_uri_t cmd_uri = {
.uri = "/control",
.method = HTTP_GET,
.handler = cmd_handler,
.user_ctx = NULL
};
httpd_handle_t camera_httpd = NULL;
static esp_err_t status_handler(httpd_req_t *req){
static char json_response[1024];
sensor_t * s = esp_camera_sensor_get();
char * p = json_response;
*p++ = '{';
p+=sprintf(p, "\"framesize\":%u,", s->status.framesize);
p+=sprintf(p, "\"quality\":%u,", s->status.quality);
p+=sprintf(p, "\"brightness\":%d,", s->status.brightness);
p+=sprintf(p, "\"contrast\":%d,", s->status.contrast);
p+=sprintf(p, "\"saturation\":%d,", s->status.saturation);
p+=sprintf(p, "\"special_effect\":%u,", s->status.special_effect);
p+=sprintf(p, "\"wb_mode\":%u,", s->status.wb_mode);
p+=sprintf(p, "\"awb\":%u,", s->status.awb);
p+=sprintf(p, "\"awb_gain\":%u,", s->status.awb_gain);
p+=sprintf(p, "\"aec\":%u,", s->status.aec);
p+=sprintf(p, "\"aec2\":%u,", s->status.aec2);
p+=sprintf(p, "\"ae_level\":%d,", s->status.ae_level);
p+=sprintf(p, "\"aec_value\":%u,", s->status.aec_value);
p+=sprintf(p, "\"agc\":%u,", s->status.agc);
p+=sprintf(p, "\"agc_gain\":%u,", s->status.agc_gain);
p+=sprintf(p, "\"gainceiling\":%u,", s->status.gainceiling);
p+=sprintf(p, "\"bpc\":%u,", s->status.bpc);
p+=sprintf(p, "\"wpc\":%u,", s->status.wpc);
p+=sprintf(p, "\"raw_gma\":%u,", s->status.raw_gma);
p+=sprintf(p, "\"lenc\":%u,", s->status.lenc);
p+=sprintf(p, "\"hmirror\":%u,", s->status.hmirror);
p+=sprintf(p, "\"dcw\":%u,", s->status.dcw);
p+=sprintf(p, "\"colorbar\":%u", s->status.colorbar);
p+=sprintf(p, ",\"face_detect\":%u", g_detection_enabled);
p+=sprintf(p, ",\"face_enroll\":%u,", g_is_enrolling);
p+=sprintf(p, "\"face_recognize\":%u", g_recognition_enabled);
*p++ = '}';
*p++ = 0;
httpd_resp_set_type(req, "application/json");
httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
return httpd_resp_send(req, json_response, strlen(json_response));
}
httpd_uri_t status_uri = {
.uri = "/status",
.method = HTTP_GET,
.handler = status_handler,
.user_ctx = NULL
};
#if 0
const esp_timer_create_args_t oneshot_timer_args = {
.callback = &oneshot_timer_callback,
/* argument specified here will be passed to timer callback function */
.name = "one-shot"
};
esp_timer_handle_t oneshot_timer;
static void oneshot_timer_callback(void* arg)
{
if(g_state != START_ENROLL)
g_is_enrolling = 1;
}
static void IRAM_ATTR gpio_isr_handler(void* arg)
{
esp_err_t err = esp_timer_start_once(oneshot_timer, 500000);
if(err == ESP_ERR_INVALID_STATE)
{
ESP_ERROR_CHECK(esp_timer_stop(oneshot_timer));
g_is_enrolling = 0;
g_is_deleting = 1;
gpio_set_level(GPIO_LED_WHITE, 0);
}
}
#endif
void app_httpserver_init ()
{
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.stack_size = 4096 * 2;
#if 0
ESP_ERROR_CHECK(esp_timer_create(&oneshot_timer_args, &oneshot_timer));
gpio_config_t io_conf = {0};
io_conf.mode = GPIO_MODE_INPUT;
io_conf.intr_type = GPIO_PIN_INTR_POSEDGE;
io_conf.pin_bit_mask = 1LL << GPIO_BUTTON;
io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
gpio_config(&io_conf);
gpio_isr_handler_add(GPIO_BUTTON, gpio_isr_handler, NULL);
#endif
gpst_input_image = xQueueCreate(1, sizeof(void *));
gpst_output = xQueueCreate(1, sizeof(http_img_process_result));
if (httpd_start(&camera_httpd, &config) == ESP_OK)
{
httpd_register_uri_handler(camera_httpd, &cmd_uri);
httpd_register_uri_handler(camera_httpd, &status_uri);
}
config.server_port += 1;
config.ctrl_port += 1;
if (httpd_start(&camera_httpd, &config) == ESP_OK)
{
httpd_register_uri_handler(camera_httpd, &_face_stream_handler);
}
}
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