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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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420 lines
11 KiB
C
420 lines
11 KiB
C
/* GStreamer
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*
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* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef _GST_H264_PARSER_H_
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#define _GST_H264_PARSER_H_
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#include <glib-object.h>
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G_BEGIN_DECLS
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typedef enum
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{
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GST_NAL_UNKNOWN = 0,
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GST_NAL_SLICE = 1,
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GST_NAL_SLICE_DPA = 2,
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GST_NAL_SLICE_DPB = 3,
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GST_NAL_SLICE_DPC = 4,
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GST_NAL_SLICE_IDR = 5,
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GST_NAL_SEI = 6,
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GST_NAL_SPS = 7,
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GST_NAL_PPS = 8,
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GST_NAL_AU_DELIMITER = 9,
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GST_NAL_SEQ_END = 10,
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GST_NAL_STREAM_END = 11,
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GST_NAL_FILTER_DATA = 12
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} GstNalUnitType;
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typedef enum
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{
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GST_H264_P_SLICE,
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GST_H264_B_SLICE,
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GST_H264_I_SLICE,
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GST_H264_SP_SLICE,
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GST_H264_SI_SLICE,
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GST_H264_S_P_SLICE,
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GST_H264_S_B_SLICE,
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GST_H264_S_I_SLICE,
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GST_H264_S_SP_SLICE,
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GST_H264_S_SI_SLICE
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} GstH264SliceType;
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#define GST_H264_IS_P_SLICE(type) ((type % 5) == GST_H264_P_SLICE)
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#define GST_H264_IS_B_SLICE(type) ((type % 5) == GST_H264_B_SLICE)
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#define GST_H264_IS_I_SLICE(type) ((type % 5) == GST_H264_I_SLICE)
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#define GST_H264_IS_SP_SLICE(type) ((type % 5) == GST_H264_SP_SLICE)
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#define GST_H264_IS_SI_SLICE(type) ((type % 5) == GST_H264_SI_SLICE)
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typedef struct _GstNalUnit GstNalUnit;
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typedef struct _GstH264HRDParameters GstH264HRDParameters;
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typedef struct _GstH264VUIParameters GstH264VUIParameters;
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typedef struct _GstH264Sequence GstH264Sequence;
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typedef struct _GstH264Picture GstH264Picture;
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typedef struct _GstH264DecRefPicMarking GstH264DecRefPicMarking;
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typedef struct _GstH264RefPicMarking GstH264RefPicMarking;
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typedef struct _GstH264PredWeightTable GstH264PredWeightTable;
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typedef struct _GstH264Slice GstH264Slice;
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typedef struct _GstH264ClockTimestamp GstH264ClockTimestamp;
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typedef struct _GstH264PicTiming GstH264PicTiming;
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typedef struct _GstH264BufferingPeriod GstH264BufferingPeriod;
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typedef struct _GstH264SEIMessage GstH264SEIMessage;
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struct _GstNalUnit
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{
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guint16 ref_idc;
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guint16 type;
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/* calculated values */
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guint8 IdrPicFlag;
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};
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struct _GstH264HRDParameters
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{
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guint8 cpb_cnt_minus1;
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guint8 bit_rate_scale;
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guint8 cpb_size_scale;
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guint32 bit_rate_value_minus1[32];
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guint32 cpb_size_value_minus1[32];
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guint8 cbr_flag[32];
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guint8 initial_cpb_removal_delay_length_minus1;
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guint8 cpb_removal_delay_length_minus1;
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guint8 dpb_output_delay_length_minus1;
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guint8 time_offset_length;
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};
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struct _GstH264VUIParameters
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{
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guint8 aspect_ratio_idc;
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/* if aspect_ratio_idc == 255 */
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guint16 sar_width;
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guint16 sar_height;
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guint8 overscan_info_present_flag;
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/* if overscan_info_present_flag */
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guint8 overscan_appropriate_flag;
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guint8 video_format;
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guint8 video_full_range_flag;
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guint8 colour_description_present_flag;
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guint8 colour_primaries;
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guint8 transfer_characteristics;
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guint8 matrix_coefficients;
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guint8 chroma_sample_loc_type_top_field;
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guint8 chroma_sample_loc_type_bottom_field;
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guint8 timing_info_present_flag;
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/* if timing_info_present_flag */
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guint32 num_units_in_tick;
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guint32 time_scale;
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guint8 fixed_frame_rate_flag;
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guint8 nal_hrd_parameters_present_flag;
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/* if nal_hrd_parameters_present_flag */
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GstH264HRDParameters nal_hrd_parameters;
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guint8 vcl_hrd_parameters_present_flag;
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/* if nal_hrd_parameters_present_flag */
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GstH264HRDParameters vcl_hrd_parameters;
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guint8 low_delay_hrd_flag;
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guint8 pic_struct_present_flag;
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};
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struct _GstH264Sequence
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{
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gint id;
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guint8 profile_idc;
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guint8 constraint_set0_flag;
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guint8 constraint_set1_flag;
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guint8 constraint_set2_flag;
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guint8 constraint_set3_flag;
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guint8 level_idc;
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guint8 chroma_format_idc;
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guint8 separate_colour_plane_flag;
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guint8 bit_depth_luma_minus8;
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guint8 bit_depth_chroma_minus8;
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guint8 qpprime_y_zero_transform_bypass_flag;
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guint8 scaling_matrix_present_flag;
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guint8 scaling_lists_4x4[6][16];
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guint8 scaling_lists_8x8[6][64];
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guint8 log2_max_frame_num_minus4;
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guint8 pic_order_cnt_type;
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/* if pic_order_cnt_type == 0 */
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guint8 log2_max_pic_order_cnt_lsb_minus4;
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/* else if pic_order_cnt_type == 1 */
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guint8 delta_pic_order_always_zero_flag;
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gint32 offset_for_non_ref_pic;
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gint32 offset_for_top_to_bottom_field;
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guint8 num_ref_frames_in_pic_order_cnt_cycle;
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gint32 offset_for_ref_frame[255];
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guint32 num_ref_frames;
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guint8 gaps_in_frame_num_value_allowed_flag;
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guint32 pic_width_in_mbs_minus1;
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guint32 pic_height_in_map_units_minus1;
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guint8 frame_mbs_only_flag;
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guint8 mb_adaptive_frame_field_flag;
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guint8 direct_8x8_inference_flag;
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guint32 frame_crop_left_offset;
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guint32 frame_crop_right_offset;
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guint32 frame_crop_top_offset;
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guint32 frame_crop_bottom_offset;
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guint8 vui_parameters_present_flag;
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/* if vui_parameters_present_flag */
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GstH264VUIParameters vui_parameters;
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/* calculated values */
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guint8 ChromaArrayType;
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guint32 MaxFrameNum;
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};
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struct _GstH264Picture
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{
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gint id;
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GstH264Sequence *sequence;
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guint8 entropy_coding_mode_flag;
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guint8 pic_order_present_flag;
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guint32 num_slice_groups_minus1;
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/* if num_slice_groups_minus1 > 0 */
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guint8 slice_group_map_type;
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/* and if slice_group_map_type == 0 */
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guint32 run_length_minus1[8];
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/* or if slice_group_map_type == 2 */
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guint32 top_left[8];
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guint32 bottom_right[8];
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/* or if slice_group_map_type == (3, 4, 5) */
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guint8 slice_group_change_direction_flag;
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guint32 slice_group_change_rate_minus1;
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/* or if slice_group_map_type == 6 */
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guint32 pic_size_in_map_units_minus1;
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guint8 *slice_group_id;
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guint8 num_ref_idx_l0_active_minus1;
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guint8 num_ref_idx_l1_active_minus1;
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guint8 weighted_pred_flag;
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guint8 weighted_bipred_idc;
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gint8 pic_init_qp_minus26;
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gint8 pic_init_qs_minus26;
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gint8 chroma_qp_index_offset;
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guint8 deblocking_filter_control_present_flag;
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guint8 constrained_intra_pred_flag;
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guint8 redundant_pic_cnt_present_flag;
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guint8 transform_8x8_mode_flag;
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guint8 scaling_lists_4x4[6][16];
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guint8 scaling_lists_8x8[6][64];
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guint8 second_chroma_qp_index_offset;
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};
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struct _GstH264RefPicMarking
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{
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guint8 memory_management_control_operation;
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guint32 difference_of_pic_nums_minus1;
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guint32 long_term_pic_num;
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guint32 long_term_frame_idx;
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guint32 max_long_term_frame_idx_plus1;
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};
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struct _GstH264DecRefPicMarking
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{
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/* if slice->nal_unit.IdrPicFlag */
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guint8 no_output_of_prior_pics_flag;
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guint8 long_term_reference_flag;
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guint8 adaptive_ref_pic_marking_mode_flag;
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GstH264RefPicMarking ref_pic_marking[10];
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guint8 n_ref_pic_marking;
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};
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struct _GstH264PredWeightTable
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{
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guint8 luma_log2_weight_denom;
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guint8 chroma_log2_weight_denom;
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guint8 luma_weight_l0[32];
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guint8 luma_offset_l0[32];
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/* if seq->ChromaArrayType != 0 */
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guint8 chroma_weight_l0[32][2];
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guint8 chroma_offset_l0[32][2];
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/* if slice->slice_type % 5 == 1 */
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guint8 luma_weight_l1[32];
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guint8 luma_offset_l1[32];
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/* and if seq->ChromaArrayType != 0 */
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guint8 chroma_weight_l1[32][2];
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guint8 chroma_offset_l1[32][2];
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};
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struct _GstH264Slice
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{
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GstNalUnit nal_unit;
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guint32 first_mb_in_slice;
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guint32 type;
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GstH264Picture *picture;
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/* if seq->separate_colour_plane_flag */
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guint8 colour_plane_id;
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guint16 frame_num;
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guint8 field_pic_flag;
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guint8 bottom_field_flag;
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/* if nal_unit.type == 5 */
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guint16 idr_pic_id;
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/* if seq->pic_order_cnt_type == 0 */
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guint16 pic_order_cnt_lsb;
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gint32 delta_pic_order_cnt_bottom;
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gint32 delta_pic_order_cnt[2];
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guint8 redundant_pic_cnt;
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/* if slice_type == B_SLICE */
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guint8 direct_spatial_mv_pred_flag;
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guint8 num_ref_idx_l0_active_minus1;
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guint8 num_ref_idx_l1_active_minus1;
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GstH264PredWeightTable pred_weight_table;
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/* if nal_unit.ref_idc != 0 */
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GstH264DecRefPicMarking dec_ref_pic_marking;
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/* calculated values */
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guint32 MaxPicNum;
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};
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struct _GstH264ClockTimestamp
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{
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guint8 ct_type;
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guint8 nuit_field_based_flag;
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guint8 counting_type;
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guint8 discontinuity_flag;
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guint8 cnt_dropped_flag;
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guint8 n_frames;
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guint8 seconds_flag;
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guint8 seconds_value;
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guint8 minutes_flag;
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guint8 minutes_value;
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guint8 hours_flag;
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guint8 hours_value;
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guint32 time_offset;
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};
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struct _GstH264PicTiming
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{
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guint8 cpb_removal_delay;
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guint8 dpb_output_delay;
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guint8 pic_struct_present_flag;
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/* if pic_struct_present_flag */
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guint8 pic_struct;
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guint8 clock_timestamp_flag[3];
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GstH264ClockTimestamp clock_timestamp[3];
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};
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struct _GstH264BufferingPeriod
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{
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GstH264Sequence *seq;
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/* seq->vui_parameters->nal_hrd_parameters_present_flag */
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guint8 nal_initial_cpb_removal_delay[32];
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guint8 nal_initial_cpb_removal_delay_offset[32];
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/* seq->vui_parameters->vcl_hrd_parameters_present_flag */
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guint8 vcl_initial_cpb_removal_delay[32];
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guint8 vcl_initial_cpb_removal_delay_offset[32];
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};
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struct _GstH264SEIMessage
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{
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guint32 payloadType;
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union {
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GstH264BufferingPeriod buffering_period;
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GstH264PicTiming pic_timing;
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};
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};
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#define GST_TYPE_H264_PARSER (gst_h264_parser_get_type ())
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#define GST_H264_PARSER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_H264_PARSER, GstH264Parser))
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#define GST_H264_PARSER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_H264_PARSER, GstH264ParserClass))
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#define GST_IS_H264_PARSER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_H264_PARSER))
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#define GST_IS_H264_PARSER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_H264_PARSER))
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#define GST_H264_PARSER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_H264_PARSER, GstH264ParserClass))
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typedef struct _GstH264ParserClass GstH264ParserClass;
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typedef struct _GstH264Parser GstH264Parser;
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struct _GstH264ParserClass
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{
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GObjectClass parent_class;
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};
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struct _GstH264Parser
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{
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GObject parent_instance;
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GHashTable *sequences;
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GHashTable *pictures;
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};
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GType gst_h264_parser_get_type (void) G_GNUC_CONST;
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GstH264Sequence *gst_h264_parser_parse_sequence (GstH264Parser * parser, guint8 * data, guint size);
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GstH264Picture *gst_h264_parser_parse_picture (GstH264Parser * parser, guint8 * data, guint size);
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gboolean gst_h264_parser_parse_slice_header (GstH264Parser * parser, GstH264Slice * slice, guint8 * data, guint size, GstNalUnit nal_unit);
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gboolean gst_h264_parser_parse_sei_message (GstH264Parser * parser, GstH264Sequence *seq, GstH264SEIMessage * sei, guint8 * data, guint size);
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G_END_DECLS
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#endif /* _GST_H264_PARSER_H_ */
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