84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/***************************************************************************************
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这个主要是预览,通过scale3_stream将dvp数据scale到对应的分辨率作为数据流发送出去
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然后lcd_stream需要接收对应的数据去显示
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这里只是产生对应数据流,数据用途实际需要终端流(比如lcd流)接收后去处理
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S_PREVIEW_SCALE3 ----> R_VIDEO_P0(320x240)
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(scale3) (lcd_video_p0)
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***************************************************************************************/
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#include "lvgl/lvgl.h"
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#include "lvgl_ui.h"
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#include "osal/string.h"
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#include "stream_frame.h"
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#include "custom_mem/custom_mem.h"
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//data申请空间函数
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#define STREAM_MALLOC custom_malloc_psram
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#define STREAM_FREE custom_free_psram
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#define STREAM_ZALLOC custom_zalloc_psram
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//结构体申请空间函数
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#define STREAM_LIBC_MALLOC custom_malloc
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#define STREAM_LIBC_FREE custom_free
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#define STREAM_LIBC_ZALLOC custom_zalloc
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extern lv_indev_t * indev_keypad;
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extern lv_style_t g_style;
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struct preview_ui_s
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{
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lv_group_t *last_group;
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lv_obj_t *base_ui;
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lv_group_t *now_group;
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lv_obj_t *now_ui;
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stream *s;
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};
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static void exit_preview_ui(lv_event_t * e)
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{
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struct preview_ui_s *ui_s = (struct preview_ui_s *)lv_event_get_user_data(e);
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lv_indev_set_group(indev_keypad, ui_s->last_group);
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lv_obj_clear_flag(ui_s->base_ui, LV_OBJ_FLAG_HIDDEN);
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lv_group_del(ui_s->now_group);
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ui_s->now_group = NULL;
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close_stream(ui_s->s);
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lv_obj_del(ui_s->now_ui);
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}
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//进入预览的ui,那么就要创建新的ui去显示预览图了
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static void enter_preview_ui(lv_event_t * e)
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{
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struct preview_ui_s *ui_s = (struct preview_ui_s *)lv_event_get_user_data(e);
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lv_obj_add_flag(ui_s->base_ui, LV_OBJ_FLAG_HIDDEN);
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lv_obj_t *ui = lv_obj_create(lv_scr_act());
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ui_s->now_ui = ui;
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lv_obj_add_style(ui, &g_style, 0);
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lv_obj_set_size(ui, LV_PCT(100), LV_PCT(100));
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//绑定流到Video_P0,显示
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ui_s->s = scale3_stream_not_bind(S_PREVIEW_SCALE3,640,480,320,240,YUV_P0);
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streamSrc_bind_streamDest(ui_s->s,R_VIDEO_P0);
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enable_stream(ui_s->s,1);
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lv_group_t *group;
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group = lv_group_create();
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lv_indev_set_group(indev_keypad, group);
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lv_group_add_obj(group, ui);
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ui_s->now_group = group;
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lv_obj_add_event_cb(ui, exit_preview_ui, LV_EVENT_PRESSED, ui_s);
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}
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lv_obj_t *preview_ui(lv_group_t *group,lv_obj_t *base_ui)
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{
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struct preview_ui_s *ui_s = (struct preview_ui_s*)STREAM_LIBC_ZALLOC(sizeof(struct preview_ui_s));
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ui_s->last_group = group;
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ui_s->base_ui = base_ui;
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lv_obj_t *btn = lv_list_add_btn(base_ui, NULL, "preview");
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lv_group_add_obj(group, btn);
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lv_obj_add_event_cb(btn, enter_preview_ui, LV_EVENT_PRESSED, ui_s);
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return btn;
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} |