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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| package mpeg | ||
|
|
||
| import ( | ||
| "github.com/wader/fq/format" | ||
| "github.com/wader/fq/format/registry" | ||
| "github.com/wader/fq/pkg/decode" | ||
| ) | ||
|
|
||
| var annexBAVCNALUFormat []*decode.Format | ||
|
|
||
| func init() { | ||
| registry.MustRegister(&decode.Format{ | ||
| Name: format.MPEG_ANNEXB, | ||
| Description: "H.264/AVC Annex B", | ||
| Groups: []string{format.PROBE}, | ||
| DecodeFn: annexBDecode, | ||
| Dependencies: []decode.Dependency{ | ||
| {Names: []string{format.AVC_NALU}, Formats: &annexBAVCNALUFormat}, | ||
| }, | ||
| }) | ||
| } | ||
|
|
||
| func annexBFindStartCode(d *decode.D) (int64, int64, error) { | ||
| offset, v, err := d.TryPeekFind(32, 8, func(v uint64) bool { | ||
| return annexBDecodeStartCodeLen(v) > 0 | ||
| }, d.BitsLeft()) | ||
| return offset, annexBDecodeStartCodeLen(v), err | ||
| } | ||
|
|
||
| func annexBDecodeStartCodeLen(v uint64) int64 { | ||
| switch { | ||
| case v == 0x00_00_00_01: | ||
| return 4 * 8 | ||
| case v&0xff_ff_ff_00 == 0x00_00_01_00: | ||
| return 3 * 8 | ||
| default: | ||
| return 0 | ||
| } | ||
| } | ||
|
|
||
| func annexBDecode(d *decode.D, in interface{}) interface{} { | ||
| currentOffset, currentPrefixLen, err := annexBFindStartCode(d) | ||
| // TODO: really restrict to 0? | ||
| if err != nil || currentOffset != 0 { | ||
| d.Invalid("could not find start code (first)") | ||
| } | ||
|
|
||
| // TODO: root array | ||
| d.FieldArrayFn("nalus", func(d *decode.D) { | ||
| for d.NotEnd() { | ||
| d.FieldBitBufLen("start_code", currentPrefixLen) | ||
|
|
||
| nextOffset, nextPrefixLen, err := annexBFindStartCode(d) | ||
| if err != nil { | ||
| nextOffset = d.Len() - d.Pos() | ||
| } | ||
|
|
||
| naluLen := nextOffset | ||
| d.FieldFormatLen("nalu", naluLen, avcNALUFormat) | ||
|
|
||
| currentPrefixLen = nextPrefixLen | ||
| } | ||
| }) | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| # ffmpeg -y -f lavfi -i testsrc -t 10ms -f h264 mpeg_annexb.h264 | ||
| /mpeg_annexb.h264: | ||
| $ fq -d mpeg_annexb verbose /mpeg_annexb.h264 | ||
| |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f| |.: {} /mpeg_annexb.h264 (mpeg_annexb) 0x0-0xae4.7 (2789) | ||
| | | | nalus: [8] 0x0-0xae4.7 (2789) | ||
| 0x0000|00 00 00 01 |.... | [0]: start_code 00000001 0x0-0x3.7 (4) | ||
| | | | [1]: nalu {} (avc_nalu) 0x4-0x1c.7 (25) | ||
| | | | sps: {} (avc_sps) 0x0-0x15.7 (22) | ||
| 0x000|f4 |. | profile_idc: High 4:4:4 Predictive Profile (244) 0x0-0x0.7 (1) | ||
| 0x000| 00 | . | constraint_set0_flag: false 0x1-0x1 (0.1) | ||
| 0x000| 00 | . | constraint_set1_flag: false 0x1.1-0x1.1 (0.1) | ||
| 0x000| 00 | . | constraint_set2_flag: false 0x1.2-0x1.2 (0.1) | ||
| 0x000| 00 | . | constraint_set3_flag: false 0x1.3-0x1.3 (0.1) | ||
| 0x000| 00 | . | constraint_set4_flag: false 0x1.4-0x1.4 (0.1) | ||
| 0x000| 00 | . | constraint_set5_flag: false 0x1.5-0x1.5 (0.1) | ||
| 0x000| 00 | . | reserved_zero_2bits: 0 0x1.6-0x1.7 (0.2) | ||
| 0x000| 0d | . | level_idc: 1.3 (13) 0x2-0x2.7 (1) | ||
| 0x000| 91 | . | seq_parameter_set_id: 0 0x3-0x3 (0.1) | ||
| 0x000| 91 | . | chroma_format_idc: 3 0x3.1-0x3.5 (0.5) | ||
| 0x000| 91 | . | separate_colour_plane_flag: false 0x3.6-0x3.6 (0.1) | ||
| 0x000| 91 | . | bit_depth_luma_minus8: 0 0x3.7-0x3.7 (0.1) | ||
| 0x000| 9b | . | bit_depth_chroma_minus8: 0 0x4-0x4 (0.1) | ||
| 0x000| 9b | . | qpprime_y_zero_transform_bypass_flag: false 0x4.1-0x4.1 (0.1) | ||
| 0x000| 9b | . | seq_scaling_matrix_present_flag: false 0x4.2-0x4.2 (0.1) | ||
| 0x000| 9b | . | log2_max_frame_num_minus4: 0 0x4.3-0x4.3 (0.1) | ||
| 0x000| 9b | . | pic_order_cnt_type: 0 0x4.4-0x4.4 (0.1) | ||
| 0x000| 9b | . | log2_max_pic_order_cnt_lsb_minus4: 2 0x4.5-0x4.7 (0.3) | ||
| 0x000| 28 | ( | max_num_ref_frames: 4 0x5-0x5.4 (0.5) | ||
| 0x000| 28 | ( | gaps_in_frame_num_value_allowed_flag: false 0x5.5-0x5.5 (0.1) | ||
| 0x000| 28 28 | (( | pic_width_in_mbs_minus1: 19 0x5.6-0x6.6 (1.1) | ||
| 0x000| 28 3f | (? | pic_height_in_map_units_minus1: 14 0x6.7-0x7.5 (0.7) | ||
| 0x000| 3f | ? | frame_mbs_only_flag: true 0x7.6-0x7.6 (0.1) | ||
| 0x000| 3f | ? | direct_8x8_inference_flag: true 0x7.7-0x7.7 (0.1) | ||
| 0x000| 60 | ` | frame_cropping_flag: false 0x8-0x8 (0.1) | ||
| 0x000| 60 | ` | vui_parameters_present_flag: true 0x8.1-0x8.1 (0.1) | ||
| | | | vui_parameters: {} 0x8.2-0x15.4 (13.3) | ||
| 0x000| 60 | ` | aspect_ratio_info_present_flag: true 0x8.2-0x8.2 (0.1) | ||
| 0x000| 60 22 | `" | aspect_ratio_idc: 1 0x8.3-0x9.2 (1) | ||
| 0x000| 22 | " | overscan_info_present_flag: false 0x9.3-0x9.3 (0.1) | ||
| 0x000| 22 | " | video_signal_type_present_flag: false 0x9.4-0x9.4 (0.1) | ||
| 0x000| 22 | " | chroma_loc_info_present_flag: false 0x9.5-0x9.5 (0.1) | ||
| 0x000| 22 | " | timing_info_present_flag: true 0x9.6-0x9.6 (0.1) | ||
| 0x000| 22 00 00 00 02 | ".... | num_units_in_tick: 1 0x9.7-0xd.6 (4) | ||
| 0x000| 02 00 00| ...| time_scale: 50 0xd.7-0x11.6 (4) | ||
| 0x010|00 64 |.d | | ||
| 0x010| 64 | d | fixed_frame_rate_flag: false 0x11.7-0x11.7 (0.1) | ||
| 0x010| 1e | . | nal_hrd_parameters_present_flag: false 0x12-0x12 (0.1) | ||
| 0x010| 1e | . | vcl_hrd_parameters_present_flag: false 0x12.1-0x12.1 (0.1) | ||
| 0x010| 1e | . | pic_struct_present_flag: false 0x12.2-0x12.2 (0.1) | ||
| 0x010| 1e | . | bitstream_restriction_flag: true 0x12.3-0x12.3 (0.1) | ||
| 0x010| 1e | . | motion_vectors_over_pic_boundaries_flag: true 0x12.4-0x12.4 (0.1) | ||
| 0x010| 1e | . | max_bytes_per_pic_denom: 0 0x12.5-0x12.5 (0.1) | ||
| 0x010| 1e | . | max_bits_per_mb_denom: 0 0x12.6-0x12.6 (0.1) | ||
| 0x010| 1e 28 | .( | log2_max_mv_length_horizontal: 9 0x12.7-0x13.5 (0.7) | ||
| 0x010| 28 53 | (S | log2_max_mv_length_vertical: 9 0x13.6-0x14.4 (0.7) | ||
| 0x010| 53 | S | max_num_reorder_frames: 2 0x14.5-0x14.7 (0.3) | ||
| 0x010| 2c| | ,| | max_dec_frame_buffering: 4 0x15-0x15.4 (0.5) | ||
| 0x010| 2c| | ,| | rbsp_trailing_bits: 80 0x15.5-0x15.7 (0.3) | ||
| 0x0000| 67 | g | forbidden_zero_bit: false 0x4-0x4 (0.1) | ||
| 0x0000| 67 | g | nal_ref_idc: 3 0x4.1-0x4.2 (0.2) | ||
| 0x0000| 67 | g | nal_unit_type: Sequence parameter set (7) 0x4.3-0x4.7 (0.5) | ||
| 0x0000| f4 00 0d 91 9b 28 28 3f 60 22 00| .....((?`".| data: f4000d919b28283f6022000003000200... 0x5-0x1c.7 (24) | ||
| 0x0010|00 03 00 02 00 00 03 00 64 1e 28 53 2c |........d.(S, | | ||
| 0x0010| 00 00 00| ...| [2]: start_code 00000001 0x1d-0x20.7 (4) | ||
| 0x0020|01 |. | | ||
| | | | [3]: nalu {} (avc_nalu) 0x21-0x26.7 (6) | ||
| | | | pps: {} (avc_pps) 0x0-0x4.7 (5) | ||
| 0x000|eb |. | pic_parameter_set_id: 0 0x0-0x0 (0.1) | ||
| 0x000|eb |. | seq_parameter_set_id: 0 0x0.1-0x0.1 (0.1) | ||
| 0x000|eb |. | entropy_coding_mode_flag: true 0x0.2-0x0.2 (0.1) | ||
| 0x000|eb |. | bottom_field_pic_order_in_frame_present_flag: false 0x0.3-0x0.3 (0.1) | ||
| 0x000|eb |. | num_slice_groups_minus1: 0 0x0.4-0x0.4 (0.1) | ||
| 0x000|eb |. | num_ref_idx_l0_default_active_minus1: 2 0x0.5-0x0.7 (0.3) | ||
| 0x000| e3 | . | num_ref_idx_l1_default_active_minus1: 0 0x1-0x1 (0.1) | ||
| 0x000| e3 | . | weighted_pred_flag: true 0x1.1-0x1.1 (0.1) | ||
| 0x000| e3 | . | weighted_bipred_idc: 2 0x1.2-0x1.3 (0.2) | ||
| 0x000| e3 c4 | .. | pic_init_qp_minus26: 3 0x1.4-0x2 (0.5) | ||
| 0x000| c4 | . | pic_init_qs_minus26: 0 0x2.1-0x2.1 (0.1) | ||
| 0x000| c4 48 | .H | chroma_qp_index_offset: -4 0x2.2-0x3 (0.7) | ||
| 0x000| 48 | H | deblocking_filter_control_present_flag: true 0x3.1-0x3.1 (0.1) | ||
| 0x000| 48 | H | constrained_intra_pred_flag: false 0x3.2-0x3.2 (0.1) | ||
| 0x000| 48 | H | redundant_pic_cnt_present_flag: false 0x3.3-0x3.3 (0.1) | ||
| 0x000| 48 | H | transform_8x8_mode_flag: true 0x3.4-0x3.4 (0.1) | ||
| 0x000| 48 | H | pic_scaling_matrix_present_flag: false 0x3.5-0x3.5 (0.1) | ||
| 0x000| 48 44| | HD| | second_chroma_qp_index_offset: -4 0x3.6-0x4.4 (0.7) | ||
| 0x000| 44| | D| | rbsp_trailing_bits: 80 0x4.5-0x4.7 (0.3) | ||
| 0x0020| 68 | h | forbidden_zero_bit: false 0x21-0x21 (0.1) | ||
| 0x0020| 68 | h | nal_ref_idc: 3 0x21.1-0x21.2 (0.2) | ||
| 0x0020| 68 | h | nal_unit_type: Picture parameter set (8) 0x21.3-0x21.7 (0.5) | ||
| 0x0020| eb e3 c4 48 44 | ...HD | data: ebe3c44844 0x22-0x26.7 (5) | ||
| 0x0020| 00 00 01 | ... | [4]: start_code 000001 0x27-0x29.7 (3) | ||
| | | | [5]: nalu {} (avc_nalu) 0x2a-0x2d6.7 (685) | ||
| | | | sei: {} (avc_sei) 0x0-0x2ab.7 (684) | ||
| 0x000|05 |. | payload_type: user_data_unregistered (5) 0x0-0x0.7 (1) | ||
| 0x000| ff ff a9 | ... | payload_size: 679 0x1-0x3.7 (3) | ||
| 0x000| dc 45 e9 bd e6 d9 48 b7 96 2c d8 20| .E....H..,. | uuid: x264 (dc45e9bde6d948b7962cd820d923eeef) 0x4-0x13.7 (16) | ||
| 0x010|d9 23 ee ef |.#.. | | ||
| 0x010| 78 32 36 34 20 2d 20 63 6f 72 65 20| x264 - core | data: 78323634202d20636f72652031363120... 0x14-0x2aa.7 (663) | ||
| 0x020|31 36 31 20 72 33 30 33 39 20 35 34 34 63 36 31|161 r3039 544c61| | ||
| * |until 0x2aa.7 (663) | | | ||
| 0x2a0| 80| | .| | rbsp_trailing_bits: 80 0x2ab-0x2ab.7 (1) | ||
| 0x0020| 06 | . | forbidden_zero_bit: false 0x2a-0x2a (0.1) | ||
| 0x0020| 06 | . | nal_ref_idc: 0 0x2a.1-0x2a.2 (0.2) | ||
| 0x0020| 06 | . | nal_unit_type: Supplemental enhancement information (SEI) (6) 0x2a.3-0x2a.7 (0.5) | ||
| 0x0020| 05 ff ff a9 dc| .....| data: 05ffffa9dc45e9bde6d948b7962cd820... 0x2b-0x2d6.7 (684) | ||
| 0x0030|45 e9 bd e6 d9 48 b7 96 2c d8 20 d9 23 ee ef 78|E....H..,. .#..x| | ||
| * |until 0x2d6.7 (684) | | | ||
| 0x02d0| 00 00 01 | ... | [6]: start_code 000001 0x2d7-0x2d9.7 (3) | ||
| | | | [7]: nalu {} (avc_nalu) 0x2da-0xae4.7 (2059) | ||
| 0x02d0| 65 | e | forbidden_zero_bit: false 0x2da-0x2da (0.1) | ||
| 0x02d0| 65 | e | nal_ref_idc: 3 0x2da.1-0x2da.2 (0.2) | ||
| 0x02d0| 65 | e | nal_unit_type: Coded slice of an IDR picture (5) 0x2da.3-0x2da.7 (0.5) | ||
| | | | slice_header: {} 0x2db-0x2dc (1.1) | ||
| 0x02d0| 88 | . | first_mb_in_slice: 0 0x2db-0x2db (0.1) | ||
| 0x02d0| 88 | . | slice_type: I (7) 0x2db.1-0x2db.7 (0.7) | ||
| 0x02d0| 84 | . | pic_parameter_set_id: 0 0x2dc-0x2dc (0.1) | ||
| 0x02d0| 84 00 2b ff| ..+.| data: 080057fffdebb7e65958ccce7bffda76... 0x2dc.1-0xae4.7 (2056.7) | ||
| 0x02e0|fe f5 db f3 2c ac 66 67 3d ff ed 3b 60 00 21 74|....,.fg=..;`.!t| | ||
| * |until 0xae4.7 (end) (2057) | | |
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