mirror of
https://github.com/wader/fq.git
synced 2024-11-24 11:16:09 +03:00
e9d9f8aef9
Rename s/interface{}/any/g
Preparation for using generics in decode API and native jq funcations etc
Remove some unused linter ignores as linter has been fixed
209 lines
6.4 KiB
Go
209 lines
6.4 KiB
Go
package mpeg
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import (
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"github.com/wader/fq/format"
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"github.com/wader/fq/format/registry"
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"github.com/wader/fq/pkg/decode"
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"github.com/wader/fq/pkg/scalar"
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)
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func init() {
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registry.MustRegister(decode.Format{
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Name: format.AVC_SPS,
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Description: "H.264/AVC Sequence Parameter Set",
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DecodeFn: avcSPSDecode,
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})
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}
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var avcVideoFormatMap = scalar.UToSymStr{
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0: "component",
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1: "pal",
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2: "ntsc",
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3: "secam",
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4: "mac",
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5: "unspecified",
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6: "reserved",
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7: "reserved",
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}
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var avcAspectRatioIdcMap = scalar.UToSymStr{
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0: "unspecified",
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1: "1:1",
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2: "12:11",
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3: "10:11",
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4: "16:11",
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5: "40:33",
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6: "24:11",
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7: "20:11",
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8: "32:11",
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9: "80:33",
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10: "18:11",
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11: "15:11",
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12: "64:33",
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13: "160:99",
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14: "4:3",
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15: "3:2",
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16: "2:1",
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}
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var chromaFormatMap = scalar.UToSymStr{
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0: "monochrome",
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1: "4:2:0",
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2: "4:2:2",
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3: "4:4:4",
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}
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func avcVuiParameters(d *decode.D) {
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aspectRatioInfoPresentFlag := d.FieldBool("aspect_ratio_info_present_flag")
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if aspectRatioInfoPresentFlag {
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aspectRatioIdc := d.FieldU8("aspect_ratio_idc", avcAspectRatioIdcMap)
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const extendedSAR = 255
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if aspectRatioIdc == extendedSAR {
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d.FieldU16("width")
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d.FieldU16("height")
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}
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}
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overscanInfoPresentFlag := d.FieldBool("overscan_info_present_flag")
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if overscanInfoPresentFlag {
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d.FieldBool("overscan_appropriate_flag")
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}
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videoSignalTypePresentFlag := d.FieldBool("video_signal_type_present_flag")
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if videoSignalTypePresentFlag {
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d.FieldU3("video_format", avcVideoFormatMap)
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d.FieldBool("video_full_range_flag")
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colourDescriptionPresentFlag := d.FieldBool("colour_description_present_flag")
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if colourDescriptionPresentFlag {
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d.FieldU8("colour_primaries", format.ISO_23091_2_ColourPrimariesMap)
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d.FieldU8("transfer_characteristics", format.ISO_23091_2_TransferCharacteristicMap)
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d.FieldU8("matrix_coefficients", format.ISO_23091_2_MatrixCoefficients)
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}
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}
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chromaLocInfoPresentFlag := d.FieldBool("chroma_loc_info_present_flag")
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if chromaLocInfoPresentFlag {
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d.FieldUFn("chroma_sample_loc_type_top_field", uEV)
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d.FieldUFn("chroma_sample_loc_type_bottom_field", uEV)
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}
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timingInfoPresentFlag := d.FieldBool("timing_info_present_flag")
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if timingInfoPresentFlag {
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d.FieldU32("num_units_in_tick")
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d.FieldU32("time_scale")
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d.FieldBool("fixed_frame_rate_flag")
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}
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nalHrdParametersPresentFlag := d.FieldBool("nal_hrd_parameters_present_flag")
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if nalHrdParametersPresentFlag {
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d.FieldStruct("nal_hrd_parameters", avcHdrParameters)
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}
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vclHrdParametersPresentFlag := d.FieldBool("vcl_hrd_parameters_present_flag")
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if vclHrdParametersPresentFlag {
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d.FieldStruct("vcl_hrd_parameters", avcHdrParameters)
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}
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if nalHrdParametersPresentFlag || vclHrdParametersPresentFlag {
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d.FieldBool("low_delay_hrd_flag")
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}
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d.FieldBool("pic_struct_present_flag")
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bitstreamRestrictionFlag := d.FieldBool("bitstream_restriction_flag")
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if bitstreamRestrictionFlag {
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d.FieldBool("motion_vectors_over_pic_boundaries_flag")
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d.FieldUFn("max_bytes_per_pic_denom", uEV)
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d.FieldUFn("max_bits_per_mb_denom", uEV)
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d.FieldUFn("log2_max_mv_length_horizontal", uEV)
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d.FieldUFn("log2_max_mv_length_vertical", uEV)
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d.FieldUFn("max_num_reorder_frames", uEV)
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d.FieldUFn("max_dec_frame_buffering", uEV)
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}
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}
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func avcHdrParameters(d *decode.D) {
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cpbCnt := d.FieldUFn("cpb_cnt", uEV, scalar.ActualUAdd(1))
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d.FieldU4("bit_rate_scale")
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d.FieldU4("cpb_size_scale")
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d.FieldArray("sched_sels", func(d *decode.D) {
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for i := uint64(0); i < cpbCnt; i++ {
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d.FieldStruct("sched_sel", func(d *decode.D) {
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d.FieldUFn("bit_rate_value", uEV, scalar.ActualUAdd(1))
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d.FieldUFn("cpb_size_value", uEV, scalar.ActualUAdd(1))
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d.FieldBool("cbr_flag")
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})
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}
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})
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d.FieldU5("initial_cpb_removal_delay_length", scalar.ActualUAdd(1))
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d.FieldU5("cpb_removal_delay_length", scalar.ActualUAdd(1))
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d.FieldU5("dpb_output_delay_length", scalar.ActualUAdd(1))
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d.FieldU5("time_offset_length")
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}
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func avcSPSDecode(d *decode.D, in any) any {
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profileIdc := d.FieldU8("profile_idc", avcProfileNames)
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d.FieldBool("constraint_set0_flag")
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d.FieldBool("constraint_set1_flag")
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d.FieldBool("constraint_set2_flag")
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d.FieldBool("constraint_set3_flag")
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d.FieldBool("constraint_set4_flag")
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d.FieldBool("constraint_set5_flag")
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d.FieldU2("reserved_zero_2bits")
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d.FieldU8("level_idc", avcLevelNames)
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d.FieldUFn("seq_parameter_set_id", uEV)
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switch profileIdc {
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// TODO: ffmpeg has some more (legacy values?)
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case 100, 110, 122, 244, 44, 83, 86, 118, 128, 138, 139, 134, 135:
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chromaFormatIdc := d.FieldUFn("chroma_format_idc", uEV, chromaFormatMap)
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if chromaFormatIdc == 3 {
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d.FieldBool("separate_colour_plane_flag")
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}
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d.FieldUFn("bit_depth_luma", uEV, scalar.ActualUAdd(8))
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d.FieldUFn("bit_depth_chroma", uEV, scalar.ActualUAdd(8))
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d.FieldBool("qpprime_y_zero_transform_bypass_flag")
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seqScalingMatrixPresentFlag := d.FieldBool("seq_scaling_matrix_present_flag")
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if seqScalingMatrixPresentFlag {
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// TODO:
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return nil
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}
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}
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d.FieldUFn("log2_max_frame_num", uEV, scalar.ActualUAdd(4))
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picOrderCntType := d.FieldUFn("pic_order_cnt_type", uEV)
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if picOrderCntType == 0 {
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d.FieldUFn("log2_max_pic_order_cnt_lsb", uEV, scalar.ActualUAdd(4))
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} else if picOrderCntType == 1 {
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d.FieldBool("delta_pic_order_always_zero_flag")
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d.FieldSFn("offset_for_non_ref_pic", sEV)
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d.FieldSFn("offset_for_top_to_bottom_field", sEV)
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numRefFramesInPicOrderCntCycle := d.FieldUFn("num_ref_frames_in_pic_order_cnt_cycle", uEV)
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d.FieldArray("offset_for_ref_frames", func(d *decode.D) {
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for i := uint64(0); i < numRefFramesInPicOrderCntCycle; i++ {
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sEV(d)
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}
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})
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}
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d.FieldUFn("max_num_ref_frames", uEV)
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d.FieldBool("gaps_in_frame_num_value_allowed_flag")
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d.FieldUFn("pic_width_in_mbs", uEV, scalar.ActualUAdd(1))
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d.FieldUFn("pic_height_in_map_units", uEV, scalar.ActualUAdd(1))
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frameMbsOnlyFlag := d.FieldBool("frame_mbs_only_flag")
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if !frameMbsOnlyFlag {
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d.FieldBool("mb_adaptive_frame_field_flag")
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}
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d.FieldBool("direct_8x8_inference_flag")
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frameCroppingFlag := d.FieldBool("frame_cropping_flag")
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if frameCroppingFlag {
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d.FieldUFn("frame_crop_left_offset", uEV)
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d.FieldUFn("frame_crop_right_offset", uEV)
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d.FieldUFn("frame_crop_top_offset", uEV)
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d.FieldUFn("frame_crop_bottom_offset", uEV)
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}
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vuiParametersPresentFlag := d.FieldBool("vui_parameters_present_flag")
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if vuiParametersPresentFlag {
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d.FieldStruct("vui_parameters", avcVuiParameters)
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}
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d.FieldRawLen("rbsp_trailing_bits", d.BitsLeft())
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return nil
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}
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