pure sdk for main

sdk/app/app_lcd/osd_show_stream.c

@@ -0,0 +1,36 @@
+#include "osd_show_stream.h"
+#include "custom_mem/custom_mem.h"
+#include "osal/string.h"
+//这里只是为了给osd创建流,实际内部没有做什么,这个流取到的数据应该是已经压缩过的
+//接收到就可以配置硬件寄存器了
+
+static int opcode_func(stream *s,void *priv,int opcode)
+{
+	int res = 0;
+	switch(opcode)
+	{
+		case STREAM_OPEN_ENTER:
+		break;
+		case STREAM_OPEN_EXIT:
+		{
+			s->priv = priv;
+			enable_stream(s,1);
+		}
+		break;
+		case STREAM_OPEN_FAIL:
+		break;
+		default:
+			//默认都返回成功
+		break;
+	}
+	return res;
+}
+stream *osd_show_stream(const char *name)
+{
+	struct osd_show_s *show = (struct osd_show_s*)custom_zalloc_psram(sizeof(struct osd_show_s));
+	struct lcdc_device *lcd_dev;	
+	lcd_dev = (struct lcdc_device *)dev_get(HG_LCDC_DEVID);
+	show->lcd_dev = lcd_dev;
+	stream *s = open_stream_available(name,0,8,opcode_func,show);
+	return s;
+}