FFmpeg: SPS Struct Reference

FFmpeg 4.0

Sequence parameter set. More...

#include <libavcodec/h264_ps.h>

Data Fields
unsigned int	sps_id

int	profile_idc

int	level_idc

int	chroma_format_idc

int	transform_bypass
	qpprime_y_zero_transform_bypass_flag More...

int	log2_max_frame_num
	log2_max_frame_num_minus4 + 4 More...

int	poc_type
	pic_order_cnt_type More...

int	log2_max_poc_lsb
	log2_max_pic_order_cnt_lsb_minus4 More...

int	delta_pic_order_always_zero_flag

int	offset_for_non_ref_pic

int	offset_for_top_to_bottom_field

int	poc_cycle_length
	num_ref_frames_in_pic_order_cnt_cycle More...

int	ref_frame_count
	num_ref_frames More...

int	gaps_in_frame_num_allowed_flag

int	mb_width
	pic_width_in_mbs_minus1 + 1 More...

int	mb_height

int	frame_mbs_only_flag

int	mb_aff
	mb_adaptive_frame_field_flag More...

int	direct_8x8_inference_flag

int	crop
	frame_cropping_flag More...

unsigned int	crop_left
	frame_cropping_rect_left_offset More...

unsigned int	crop_right
	frame_cropping_rect_right_offset More...

unsigned int	crop_top
	frame_cropping_rect_top_offset More...

unsigned int	crop_bottom
	frame_cropping_rect_bottom_offset More...

int	vui_parameters_present_flag

AVRational	sar

int	video_signal_type_present_flag

int	full_range

int	colour_description_present_flag

enum AVColorPrimaries	color_primaries

enum AVColorTransferCharacteristic	color_trc

enum AVColorSpace	colorspace

int	timing_info_present_flag

uint32_t	num_units_in_tick

uint32_t	time_scale

int	fixed_frame_rate_flag

short	offset_for_ref_frame [256]

int	bitstream_restriction_flag

int	num_reorder_frames

int	scaling_matrix_present

uint8_t	scaling_matrix4 [6][16]

uint8_t	scaling_matrix8 [6][64]

int	nal_hrd_parameters_present_flag

int	vcl_hrd_parameters_present_flag

int	pic_struct_present_flag

int	time_offset_length

int	cpb_cnt
	See H.264 E.1.2. More...

int	initial_cpb_removal_delay_length
	initial_cpb_removal_delay_length_minus1 + 1 More...

int	cpb_removal_delay_length
	cpb_removal_delay_length_minus1 + 1 More...

int	dpb_output_delay_length
	dpb_output_delay_length_minus1 + 1 More...

int	bit_depth_luma
	bit_depth_luma_minus8 + 8 More...

int	bit_depth_chroma
	bit_depth_chroma_minus8 + 8 More...

int	residual_color_transform_flag
	residual_colour_transform_flag More...

int	constraint_set_flags
	constraint_set[0-3]_flag More...

uint8_t	data [4096]

size_t	data_size

Detailed Description

Sequence parameter set.

Definition at line 43 of file h264_ps.h.

Field Documentation

◆ sps_id

unsigned int SPS::sps_id

Definition at line 44 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set().

◆ profile_idc

int SPS::profile_idc

Definition at line 45 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_h264_get_profile(), hl_decode_mb_idct_luma(), hl_decode_mb_predict_luma(), and more_rbsp_data_in_pps().

◆ level_idc

int SPS::level_idc

Definition at line 46 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), h264_init_ps(), parse_nal_units(), and vaapi_h264_start_frame().

◆ chroma_format_idc

int SPS::chroma_format_idc

Definition at line 47 of file h264_ps.h.

Referenced by decode_scaling_matrices(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_decode_seq_parameter_set(), ff_h264_pred_weight_table(), ff_h264_update_thread_context(), fill_picture_parameters(), h264_init_ps(), h264_slice_header_init(), parse_nal_units(), and vaapi_h264_start_frame().

◆ transform_bypass

int SPS::transform_bypass

qpprime_y_zero_transform_bypass_flag

Definition at line 48 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), init_dequant_tables(), init_scan_tables(), nvdec_h264_start_frame(), and vdpau_h264_start_frame().

◆ log2_max_frame_num

int SPS::log2_max_frame_num

log2_max_frame_num_minus4 + 4

Definition at line 49 of file h264_ps.h.

Referenced by decode_picture_timing(), ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), ff_h264_init_poc(), fill_picture_parameters(), h264_field_start(), h264_slice_header_parse(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ poc_type

int SPS::poc_type

pic_order_cnt_type

Definition at line 50 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_h264_init_poc(), fill_picture_parameters(), h264_slice_header_parse(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ log2_max_poc_lsb

int SPS::log2_max_poc_lsb

log2_max_pic_order_cnt_lsb_minus4

Definition at line 51 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_h264_init_poc(), fill_picture_parameters(), h264_slice_header_parse(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ delta_pic_order_always_zero_flag

int SPS::delta_pic_order_always_zero_flag

Definition at line 52 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), h264_slice_header_parse(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ offset_for_non_ref_pic

int SPS::offset_for_non_ref_pic

Definition at line 53 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), and ff_h264_init_poc().

◆ offset_for_top_to_bottom_field

int SPS::offset_for_top_to_bottom_field

Definition at line 54 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), and ff_h264_init_poc().

◆ poc_cycle_length

int SPS::poc_cycle_length

num_ref_frames_in_pic_order_cnt_cycle

Definition at line 55 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), and ff_h264_init_poc().

◆ ref_frame_count

int SPS::ref_frame_count

num_ref_frames

Definition at line 56 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), fill_picture_parameters(), generate_sliding_window_mmcos(), h264_field_start(), h264_init_ps(), nvdec_h264_frame_params(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ gaps_in_frame_num_allowed_flag

int SPS::gaps_in_frame_num_allowed_flag

Definition at line 57 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), h264_field_start(), and vaapi_h264_start_frame().

◆ mb_width

int SPS::mb_width

pic_width_in_mbs_minus1 + 1

(pic_height_in_map_units_minus1 + 1) * (2 - frame_mbs_only_flag)

Definition at line 58 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), h264_init_ps(), and parse_nal_units().

◆ mb_height

int SPS::mb_height

Definition at line 60 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), h264_init_ps(), and parse_nal_units().

◆ frame_mbs_only_flag

int SPS::frame_mbs_only_flag

Definition at line 61 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), h264_slice_header_parse(), nvdec_h264_start_frame(), parse_nal_units(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ mb_aff

int SPS::mb_aff

mb_adaptive_frame_field_flag

Definition at line 62 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), h264_frame_start(), nvdec_h264_start_frame(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ direct_8x8_inference_flag

int SPS::direct_8x8_inference_flag

Definition at line 63 of file h264_ps.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), get_dct8x8_allowed(), h264_slice_header_parse(), nvdec_h264_start_frame(), pred_spatial_direct_motion(), pred_temp_direct_motion(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ crop

int SPS::crop

frame_cropping_flag

Definition at line 64 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set().

◆ crop_left

unsigned int SPS::crop_left

frame_cropping_rect_left_offset

Definition at line 67 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), init_dimensions(), and parse_nal_units().

◆ crop_right

unsigned int SPS::crop_right

frame_cropping_rect_right_offset

Definition at line 68 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), init_dimensions(), and parse_nal_units().

◆ crop_top

unsigned int SPS::crop_top

frame_cropping_rect_top_offset

Definition at line 69 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), init_dimensions(), and parse_nal_units().

◆ crop_bottom

unsigned int SPS::crop_bottom

frame_cropping_rect_bottom_offset

Definition at line 70 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), init_dimensions(), and parse_nal_units().

◆ vui_parameters_present_flag

int SPS::vui_parameters_present_flag

Definition at line 71 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set().

◆ sar

AVRational SPS::sar

Definition at line 72 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), h264_init_ps(), and h264_slice_header_init().

◆ video_signal_type_present_flag

int SPS::video_signal_type_present_flag

Definition at line 73 of file h264_ps.h.

Referenced by decode_vui_parameters(), and h264_init_ps().

◆ full_range

int SPS::full_range

Definition at line 74 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), and h264_init_ps().

◆ colour_description_present_flag

int SPS::colour_description_present_flag

Definition at line 75 of file h264_ps.h.

Referenced by decode_vui_parameters(), and h264_init_ps().

◆ color_primaries

enum AVColorPrimaries SPS::color_primaries

Definition at line 76 of file h264_ps.h.

Referenced by decode_vui_parameters(), and h264_init_ps().

◆ color_trc

enum AVColorTransferCharacteristic SPS::color_trc

Definition at line 77 of file h264_ps.h.

Referenced by decode_vui_parameters(), and h264_init_ps().

◆ colorspace

enum AVColorSpace SPS::colorspace

Definition at line 78 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), ff_h264_update_thread_context(), and h264_init_ps().

◆ timing_info_present_flag

int SPS::timing_info_present_flag

Definition at line 79 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), and h264_slice_header_init().

◆ num_units_in_tick

uint32_t SPS::num_units_in_tick

Definition at line 80 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), and h264_slice_header_init().

◆ time_scale

uint32_t SPS::time_scale

Definition at line 81 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), and h264_slice_header_init().

◆ fixed_frame_rate_flag

int SPS::fixed_frame_rate_flag

Definition at line 82 of file h264_ps.h.

Referenced by decode_vui_parameters().

◆ offset_for_ref_frame

short SPS::offset_for_ref_frame[256]

Definition at line 83 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), and ff_h264_init_poc().

◆ bitstream_restriction_flag

int SPS::bitstream_restriction_flag

Definition at line 84 of file h264_ps.h.

Referenced by decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), h264_decode_init(), and h264_select_output_frame().

◆ num_reorder_frames

int SPS::num_reorder_frames

Definition at line 85 of file h264_ps.h.

Referenced by avpriv_h264_has_num_reorder_frames(), decode_vui_parameters(), ff_h264_decode_seq_parameter_set(), h264_decode_init(), h264_select_output_frame(), and nvdec_h264_frame_params().

◆ scaling_matrix_present

int SPS::scaling_matrix_present

Definition at line 86 of file h264_ps.h.

Referenced by decode_scaling_matrices(), and ff_h264_decode_seq_parameter_set().

◆ scaling_matrix4

uint8_t SPS::scaling_matrix4[6][16]

Definition at line 87 of file h264_ps.h.

Referenced by decode_scaling_matrices(), ff_h264_decode_picture_parameter_set(), and ff_h264_decode_seq_parameter_set().

◆ scaling_matrix8

uint8_t SPS::scaling_matrix8[6][64]

Definition at line 88 of file h264_ps.h.

Referenced by decode_scaling_matrices(), ff_h264_decode_picture_parameter_set(), and ff_h264_decode_seq_parameter_set().

◆ nal_hrd_parameters_present_flag

int SPS::nal_hrd_parameters_present_flag

Definition at line 89 of file h264_ps.h.

Referenced by decode_buffering_period(), decode_picture_timing(), and decode_vui_parameters().

◆ vcl_hrd_parameters_present_flag

int SPS::vcl_hrd_parameters_present_flag

Definition at line 90 of file h264_ps.h.

Referenced by decode_buffering_period(), decode_picture_timing(), and decode_vui_parameters().

◆ pic_struct_present_flag

int SPS::pic_struct_present_flag

Definition at line 91 of file h264_ps.h.

Referenced by decode_picture_timing(), decode_vui_parameters(), h264_export_frame_props(), and parse_nal_units().

◆ time_offset_length

int SPS::time_offset_length

Definition at line 92 of file h264_ps.h.

Referenced by decode_hrd_parameters(), decode_picture_timing(), and ff_h264_decode_seq_parameter_set().

◆ cpb_cnt

int SPS::cpb_cnt

See H.264 E.1.2.

Definition at line 93 of file h264_ps.h.

Referenced by decode_buffering_period(), and decode_hrd_parameters().

◆ initial_cpb_removal_delay_length

int SPS::initial_cpb_removal_delay_length

initial_cpb_removal_delay_length_minus1 + 1

Definition at line 94 of file h264_ps.h.

Referenced by decode_buffering_period(), and decode_hrd_parameters().

◆ cpb_removal_delay_length

int SPS::cpb_removal_delay_length

cpb_removal_delay_length_minus1 + 1

Definition at line 95 of file h264_ps.h.

Referenced by decode_hrd_parameters(), and decode_picture_timing().

◆ dpb_output_delay_length

int SPS::dpb_output_delay_length

dpb_output_delay_length_minus1 + 1

Definition at line 96 of file h264_ps.h.

Referenced by decode_hrd_parameters(), and decode_picture_timing().

◆ bit_depth_luma

int SPS::bit_depth_luma

◆ bit_depth_chroma

int SPS::bit_depth_chroma

bit_depth_chroma_minus8 + 8

Definition at line 98 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), h264_frame_start(), h264_slice_header_init(), nvdec_h264_start_frame(), and vaapi_h264_start_frame().

◆ residual_color_transform_flag

int SPS::residual_color_transform_flag

residual_colour_transform_flag

Definition at line 99 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), fill_picture_parameters(), nvdec_h264_start_frame(), vaapi_h264_start_frame(), and vdpau_h264_start_frame().

◆ constraint_set_flags

int SPS::constraint_set_flags

constraint_set[0-3]_flag

Definition at line 100 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_h264_get_profile(), and more_rbsp_data_in_pps().

◆ data

uint8_t SPS::data[4096]

Definition at line 101 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_videotoolbox_avcc_extradata_create(), mediacodec_decode_close(), and videotoolbox_h264_decode_params().

◆ data_size

size_t SPS::data_size

Definition at line 102 of file h264_ps.h.

Referenced by ff_h264_decode_seq_parameter_set(), ff_videotoolbox_avcc_extradata_create(), and mediacodec_decode_close().

The documentation for this struct was generated from the following file:

libavcodec/h264_ps.h