blob: 9540e28471e28319210ee4d7cf92f40d453e6b11
| 1 | #ifndef UTILS_COMMON_H |
| 2 | #define UTILS_COMMON_H |
| 3 | |
| 4 | #include "pixfmt.h" |
| 5 | |
| 6 | #define AV_INPUT_BUFFER_PADDING_SIZE 64 |
| 7 | #define MIN_CACHE_BITS 64 |
| 8 | |
| 9 | #define FFMAX(a,b) ((a) > (b) ? (a) : (b)) |
| 10 | #define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c) |
| 11 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a)) |
| 12 | #define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c) |
| 13 | |
| 14 | #define AV_WL32(p, val) \ |
| 15 | do { \ |
| 16 | u32 d = (val); \ |
| 17 | ((u8*)(p))[0] = (d); \ |
| 18 | ((u8*)(p))[1] = (d) >> 8; \ |
| 19 | ((u8*)(p))[2] = (d) >> 16; \ |
| 20 | ((u8*)(p))[3] = (d) >> 24; \ |
| 21 | } while(0) |
| 22 | |
| 23 | #define AV_WB32(p, val) \ |
| 24 | do { u32 d = (val); \ |
| 25 | ((u8*)(p))[3] = (d); \ |
| 26 | ((u8*)(p))[2] = (d) >> 8; \ |
| 27 | ((u8*)(p))[1] = (d) >> 16; \ |
| 28 | ((u8*)(p))[0] = (d) >> 24; \ |
| 29 | } while(0) |
| 30 | |
| 31 | #define AV_RB32(x) \ |
| 32 | (((u32)((const u8*)(x))[0] << 24) | \ |
| 33 | (((const u8*)(x))[1] << 16) | \ |
| 34 | (((const u8*)(x))[2] << 8) | \ |
| 35 | ((const u8*)(x))[3]) |
| 36 | |
| 37 | #define AV_RL32(x) \ |
| 38 | (((u32)((const u8*)(x))[3] << 24) | \ |
| 39 | (((const u8*)(x))[2] << 16) | \ |
| 40 | (((const u8*)(x))[1] << 8) | \ |
| 41 | ((const u8*)(x))[0]) |
| 42 | |
| 43 | #define NEG_SSR32(a, s) (((int)(a)) >> ((s < 32) ? (32 - (s)) : 0)) |
| 44 | #define NEG_USR32(a, s) (((u32)(a)) >> ((s < 32) ? (32 - (s)) : 0)) |
| 45 | |
| 46 | //rounded division & shift |
| 47 | #define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b)) |
| 48 | /* assume b>0 */ |
| 49 | #define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) |
| 50 | |
| 51 | struct AVRational{ |
| 52 | int num; ///< numerator |
| 53 | int den; ///< denominator |
| 54 | }; |
| 55 | |
| 56 | //fmt |
| 57 | const char *av_color_space_name(enum AVColorSpace space); |
| 58 | const char *av_color_primaries_name(enum AVColorPrimaries primaries); |
| 59 | const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer); |
| 60 | |
| 61 | //math |
| 62 | int av_log2(u32 v); |
| 63 | |
| 64 | //bitstream |
| 65 | int find_start_code(u8 *data, int data_sz); |
| 66 | int calc_nal_len(u8 *data, int len); |
| 67 | u8 *nal_unit_extract_rbsp(const u8 *src, u32 src_len, u32 *dst_len); |
| 68 | |
| 69 | //debug |
| 70 | void print_hex_debug(u8 *data, u32 len, int max); |
| 71 | |
| 72 | #endif |