(data []byte)
| 24 | } |
| 25 | |
| 26 | func ParseSPS(data []byte) (self SPSInfo, err error) { |
| 27 | r := &bits.GolombBitReader{R: bytes.NewReader(data)} |
| 28 | |
| 29 | if _, err = r.ReadBits(8); err != nil { |
| 30 | return |
| 31 | } |
| 32 | |
| 33 | if self.ProfileIdc, err = r.ReadBits(8); err != nil { |
| 34 | return |
| 35 | } |
| 36 | |
| 37 | // constraint_set0_flag-constraint_set6_flag,reserved_zero_2bits |
| 38 | if _, err = r.ReadBits(8); err != nil { |
| 39 | return |
| 40 | } |
| 41 | |
| 42 | // level_idc |
| 43 | if self.LevelIdc, err = r.ReadBits(8); err != nil { |
| 44 | return |
| 45 | } |
| 46 | |
| 47 | // seq_parameter_set_id |
| 48 | if _, err = r.ReadExponentialGolombCode(); err != nil { |
| 49 | return |
| 50 | } |
| 51 | |
| 52 | if self.ProfileIdc == 100 || self.ProfileIdc == 110 || |
| 53 | self.ProfileIdc == 122 || self.ProfileIdc == 244 || |
| 54 | self.ProfileIdc == 44 || self.ProfileIdc == 83 || |
| 55 | self.ProfileIdc == 86 || self.ProfileIdc == 118 { |
| 56 | |
| 57 | var chroma_format_idc uint |
| 58 | if chroma_format_idc, err = r.ReadExponentialGolombCode(); err != nil { |
| 59 | return |
| 60 | } |
| 61 | |
| 62 | if chroma_format_idc == 3 { |
| 63 | // residual_colour_transform_flag |
| 64 | if _, err = r.ReadBit(); err != nil { |
| 65 | return |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | // bit_depth_luma_minus8 |
| 70 | if _, err = r.ReadExponentialGolombCode(); err != nil { |
| 71 | return |
| 72 | } |
| 73 | // bit_depth_chroma_minus8 |
| 74 | if _, err = r.ReadExponentialGolombCode(); err != nil { |
| 75 | return |
| 76 | } |
| 77 | // qpprime_y_zero_transform_bypass_flag |
| 78 | if _, err = r.ReadBit(); err != nil { |
| 79 | return |
| 80 | } |
| 81 | |
| 82 | var seq_scaling_matrix_present_flag uint |
| 83 | if seq_scaling_matrix_present_flag, err = r.ReadBit(); err != nil { |
no test coverage detected