有关图片彩色显示类型

Format GREY   ( 8 bits, 8 bpp gray): Planar Y800
Format RGB555 (16 bits, 15 bpp RGB, le): RGB 15-bit
Format RGB555X (16 bits, 15 bpp RGB, be): Unknown
Format RGB565 (16 bits, 16 bpp RGB, le): RGB 16-bit
Format RGB565X (16 bits, 16 bpp RGB, be): Unknown
Format BGR24  (24 bits, 24 bpp RGB, le): BGR 24-bit
Format RGB24  (24 bits, 24 bpp RGB, be): RGB 24-bit
Format BGR32  (32 bits, 32 bpp RGB, le): BGRA
Format RGB32  (32 bits, 32 bpp RGB, be): RGBA
Format YUYV   (16 bits, 4:2:2 packed, YUYV): Packed YUY2
Format UYVY   (16 bits, 4:2:2 packed, UYVY): Packed UYVY
Format YUV422P (16 bits, 4:2:2 planar, Y-Cb-Cr): Planar 422P
Format YUV420 (12 bits, 4:2:0 planar, Y-Cb-Cr): Planar I420
Format YVU420 (12 bits, 4:2:0 planar, Y-Cb-Cr): Planar YV12