6.6. 图像处理
工程内支持多种图像处理
支持播放GIF, JPG, PNG
支持任意尺寸缩放，裁剪，图像旋转。（具体查看
yuv_soft_scalling.h）支持多种数据转换 RGB565->yuv420, YUV420->RGB565等等（具体查看
yuv_to_rgb.h）支持软件图像合成代码开放
lcd_data_driver.c支持JPG->YUV, YUV->JPG。
支持同步帧处理te_driver文件夹
- 1、播放GIF
已经封装好成api函数使用，路径
apps/common/ui/gif_api.c- 2、播放JPG
已经封装好成api测试线程，路径
apps/wifi_camera/ui_camera_demo/sd_play_jpg_mp3.c- 3、播放PNG
需要开启UI使用UI工程加载PNG文件，demo_ui工程中UI_DEMO_1_0.c控件测试。
- 4、有关图像合成应用
在camera出图时需要图像上显示一些时间信息或者大头框等
该相机为儿童拍照打印相机量产在售，支持前后双摄，320x240分辨率，摄像头640x480帧数20帧无条纹切线，拍照将数据打印出来或者上传到手机。
6.6.1. 图像转码例子
相关测试例子查看路径 apps/common/example/video/image
API函数：
Functions
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u16 rgb_24_to_565(u8 R, u8 G, u8 B)
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void yuv420p_quto_rgb24(unsigned char *yuvBuffer_in, unsigned char *rgbBuffer_out, int width, int height, char be)
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void yuv420p_quto_rgb565(unsigned char *yuvBuffer_in, unsigned char *rgbBuffer_out, int width, int height, char be)
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void yuv422p_quto_rgb565(unsigned char *yuvBuffer_in, unsigned char *rgbBuffer_out, int width, int height, char be)
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void yuv444p_quto_rgb565(unsigned char *yuvBuffer_in, unsigned char *rgbBuffer_out, int width, int height, char be)
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int rgb565_to_yuv420p(unsigned char *rgb565, unsigned char *yuv420p, int width, int height, char be)
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int rgb24_to_yuv420p(unsigned char *rgb24, unsigned char *yuv420p, int width, int height)
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void RGB565_to_RGB888(unsigned char *rgb565, unsigned char *rgb888, int width, int height)
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void RGB888_to_YUV420(u8 *rgb_buf, u8 *yuv_buf, u16 width, u16 heigh)
Functions
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int YUYV422ToYUV422p(unsigned char *yuyv, unsigned char *yuv422p, int width, int height)
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int YUV444pToYUV422p(unsigned char *yuv444p, unsigned char *yuv422p, int width, int height)
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int YUV444pToYUV420p(unsigned char *yuv444p, unsigned char *yuv420p, int width, int height)
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int YUV422pToYUV420p(unsigned char *yuv422p, unsigned char *yuv420p, int width, int height)
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int YUV420p_REVERSAL(char *src, char *out, int src_w, int src_h, int *out_w, int *out_h, int angle)
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int YUV420p_ALIGN(unsigned char *src, int src_w, int src_h, int *out_w, int *out_h, int width_align, int height_align)
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int YUV420p_Zoom_Out(unsigned char *src, unsigned char *out, int src_w, int src_h, int out_w, int out_h)
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int YUV420p_Zoom_In(unsigned char *src, unsigned char *out, int src_w, int src_h, int out_w, int out_h)
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int YUV420p_ZOOM(unsigned char *src, unsigned char *out, int src_w, int src_h, int out_w, int out_h)
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int YUV420p_Soft_Scaling(unsigned char *src, unsigned char *out, int src_w, int src_h, int out_w, int out_h)
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int YUV420p_Cut(unsigned char *yuv420p, int src_w, int src_h, unsigned char *out, int out_size, int w_start, int w_size, int h_start, int h_size)
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void RGB_Soft_90(unsigned char mode, char *out_buf, char *in_buf, int width, int height)
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struct image_info
- image_info.__unnamed48__