定义图像或视频类型枚举。
目前DVPP模块仅支持HI_PT_H264、HI_PT_H265、HI_PT_JPEG、HI_PT_VPC，HI_PT_PNG，其中各功能支持的图像或视频类型如下：
typedef enum {
HI_PT_PCMU = 0,
HI_PT_1016 = 1,
HI_PT_G721 = 2,
HI_PT_GSM = 3,
HI_PT_G723 = 4,
HI_PT_DVI4_8K = 5,
HI_PT_DVI4_16K = 6,
HI_PT_LPC = 7,
HI_PT_PCMA = 8,
HI_PT_G722 = 9,
HI_PT_S16BE_STEREO = 10,
HI_PT_S16BE_MONO = 11,
HI_PT_QCELP = 12,
HI_PT_CN = 13,
HI_PT_MPEGAUDIO = 14,
HI_PT_G728 = 15,
HI_PT_DVI4_3 = 16,
HI_PT_DVI4_4 = 17,
HI_PT_G729 = 18,
HI_PT_G711A = 19,
HI_PT_G711U = 20,
HI_PT_G726 = 21,
HI_PT_G729A = 22,
HI_PT_LPCM = 23,
HI_PT_CelB = 25,
HI_PT_JPEG = 26,
HI_PT_CUSM = 27,
HI_PT_NV = 28,
HI_PT_PICW = 29,
HI_PT_CPV = 30,
HI_PT_H261 = 31,
HI_PT_MPEGVIDEO = 32,
HI_PT_MPEG2TS = 33,
HI_PT_H263 = 34,
HI_PT_SPEG = 35,
HI_PT_MPEG2VIDEO = 36,
HI_PT_AAC = 37,
HI_PT_WMA9STD = 38,
HI_PT_HEAAC = 39,
HI_PT_PCM_VOICE = 40,
HI_PT_PCM_AUDIO = 41,
HI_PT_MP3 = 43,
HI_PT_ADPCMA = 49,
HI_PT_AEC = 50,
HI_PT_X_LD = 95,
HI_PT_H264 = 96,
HI_PT_D_GSM_HR = 200,
HI_PT_D_GSM_EFR = 201,
HI_PT_D_L8 = 202,
HI_PT_D_RED = 203,
HI_PT_D_VDVI = 204,
HI_PT_D_BT656 = 220,
HI_PT_D_H263_1998 = 221,
HI_PT_D_MP1S = 222,
HI_PT_D_MP2P = 223,
HI_PT_D_BMPEG = 224,
HI_PT_MP4VIDEO = 230,
HI_PT_MP4AUDIO = 237,
HI_PT_VC1 = 238,
HI_PT_JVC_ASF = 255,
HI_PT_D_AVI = 256,
HI_PT_DIVX3 = 257,
HI_PT_AVS = 258,
HI_PT_REAL8 = 259,
HI_PT_REAL9 = 260,
HI_PT_VP6 = 261,
HI_PT_VP6F = 262,
HI_PT_VP6A = 263,
HI_PT_SORENSON = 264,
HI_PT_H265 = 265,
HI_PT_VP8 = 266,
HI_PT_MVC = 267,
HI_PT_PNG = 268,
HI_PT_AMR = 1001,
HI_PT_MJPEG = 1002,
HI_PT_AMRWB = 1003,
HI_PT_PRORES = 1006,
HI_PT_OPUS = 1007,
HI_PT_VPC = 2000,
HI_PT_BUTT
} hi_payload_type;