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#ifndef NAL_PARSER_H_
#define NAL_PARSER_H_
#include <stdlib.h>
#include "xine_internal.h"
enum nal_unit_types {
NAL_UNSPECIFIED = 0,
NAL_SLICE,
NAL_PART_A,
NAL_PART_B,
NAL_PART_C,
NAL_SLICE_IDR,
NAL_SEI,
NAL_SPS,
NAL_PPS,
NAL_AU_DELIMITER,
NAL_END_OF_SEQUENCE,
NAL_END_OF_STREAM,
NAL_FILLER_DATA,
NAL_SPS_EXT
};
/* slice types repeat from 5-9, we
* need a helper function for comparison
*/
enum slice_types {
SLICE_P = 0,
SLICE_B,
SLICE_I,
SLICE_SP,
SLICE_SI
};
enum aspect_ratio {
ASPECT_UNSPECIFIED = 0,
ASPECT_1_1,
ASPECT_12_11,
ASPECT_10_11,
ASPECT_16_11,
ASPECT_40_33,
ASPECT_24_11,
ASPECT_20_11,
ASPECT_32_11,
ASPECT_80_33,
ASPECT_18_11,
ASPECT_15_11,
ASPECT_64_33,
ASPECT_160_99,
ASPECT_4_3,
ASPECT_3_2,
ASPECT_2_1,
ASPECT_RESERVED
};
static inline uint32_t slice_type(uint32_t slice_type) { return (slice_type < 10 ? slice_type % 5 : slice_type); }
struct nal_unit {
uint8_t nal_ref_idc; // 0x03
uint8_t nal_unit_type; // 0x1f
struct seq_parameter_set_rbsp *sps;
struct pic_parameter_set_rbsp *pps;
struct slice_header *slc;
};
struct hrd_parameters {
uint32_t cpb_cnt_minus1;
uint8_t bit_rate_scale;
uint8_t cpb_size_scale;
uint32_t bit_rate_value_minus1[32];
uint32_t cpb_size_value_minus1[32];
uint8_t cbr_flag[32];
uint8_t initial_cpb_removal_delay_length_minus1;
uint8_t cpb_removal_delay_length_minus1;
uint8_t dpb_output_delay_length_minus1;
uint8_t time_offset_length;
};
struct seq_parameter_set_rbsp {
uint8_t profile_idc; // 0xff
uint8_t constraint_setN_flag; // 0x0f
uint8_t level_idc; // 0xff
uint32_t seq_parameter_set_id;
uint32_t chroma_format_idc;
uint8_t residual_colour_transform_flag; // 0x01
uint32_t bit_depth_luma_minus8;
uint32_t bit_depth_chroma_minus8;
uint8_t qpprime_y_zero_transform_bypass_flag;
uint8_t seq_scaling_matrix_present_flag;
/* if(seq_scaling_matrix_present_flag) */
uint8_t seq_scaling_list_present_flag[8];
uint8_t scaling_lists_4x4[6][16];
uint8_t scaling_lists_8x8[2][64];
/* endif */
uint32_t log2_max_frame_num_minus4;
uint32_t pic_order_cnt_type;
// if pic_order_cnt_type==0
uint32_t log2_max_pic_order_cnt_lsb_minus4;
// else
uint8_t delta_pic_order_always_zero_flag;
int32_t offset_for_non_ref_pic;
int32_t offset_for_top_to_bottom_field;
uint8_t num_ref_frames_in_pic_order_cnt_cycle;
int32_t offset_for_ref_frame[256];
// TODO: some more ignored here
uint32_t num_ref_frames;
uint8_t gaps_in_frame_num_value_allowed_flag;
/*uint32_t pic_width_in_mbs_minus1;
uint32_t pic_height_in_map_units_minus1;*/
uint32_t pic_width;
uint32_t pic_height;
uint8_t frame_mbs_only_flag;
uint8_t mb_adaptive_frame_field_flag;
uint8_t direct_8x8_inference_flag;
uint8_t frame_cropping_flag;
uint32_t frame_crop_left_offset;
uint32_t frame_crop_right_offset;
uint32_t frame_crop_top_offset;
uint32_t frame_crop_bottom_offset;
uint8_t vui_parameters_present_flag;
/* vui_parameters */
union {
uint8_t aspect_ration_info_present_flag;
/* aspect_ration_info_present_flag == 1 */
uint8_t aspect_ratio_idc;
uint16_t sar_width;
uint16_t sar_height;
uint8_t overscan_info_present_flag;
/* overscan_info_present_flag == 1 */
uint8_t overscan_appropriate_flag;
uint8_t video_signal_type_present_flag;
/* video_signal_type_present_flag == 1 */
uint8_t video_format;
uint8_t video_full_range_flag;
uint8_t colour_description_present;
/* colour_description_present == 1 */
uint8_t colour_primaries;
uint8_t transfer_characteristics;
uint8_t matrix_coefficients;
uint8_t chroma_loc_info_present_flag;
/* chroma_loc_info_present_flag == 1 */
uint8_t chroma_sample_loc_type_top_field;
uint8_t chroma_sample_loc_type_bottom_field;
uint8_t timing_info_present_flag;
/* timing_info_present_flag == 1 */
uint32_t num_units_in_tick;
uint32_t time_scale;
uint8_t fixed_frame_rate_flag;
uint8_t nal_hrd_parameters_present_flag;
struct hrd_parameters nal_hrd_parameters;
uint8_t vc1_hrd_parameters_present_flag;
struct hrd_parameters vc1_hrd_parameters;
uint8_t low_delay_hrd_flag;
uint8_t pic_struct_present_flag;
uint8_t bitstream_restriction_flag;
/* bitstream_restriction_flag == 1 */
uint8_t motion_vectors_over_pic_boundaries;
uint32_t max_bytes_per_pic_denom;
uint32_t max_bits_per_mb_denom;
uint32_t log2_max_mv_length_horizontal;
uint32_t log2_max_mv_length_vertical;
uint32_t num_reorder_frames;
uint32_t max_dec_frame_buffering;
} vui_parameters;
};
struct pic_parameter_set_rbsp {
uint32_t pic_parameter_set_id;
uint32_t seq_parameter_set_id;
uint8_t entropy_coding_mode_flag;
uint8_t pic_order_present_flag;
uint32_t num_slice_groups_minus1;
/* num_slice_groups_minus1 > 0 */
uint32_t slice_group_map_type;
/* slice_group_map_type == 1 */
uint32_t run_length_minus1[64];
/* slice_group_map_type == 2 */
uint32_t top_left[64];
uint32_t bottom_right[64];
/* slice_group_map_type == 3,4,5 */
uint8_t slice_group_change_direction_flag;
uint32_t slice_group_change_rate_minus1;
/* slice_group_map_type == 6 */
uint32_t pic_size_in_map_units_minus1;
uint8_t slice_group_id[64];
uint32_t num_ref_idx_l0_active_minus1;
uint32_t num_ref_idx_l1_active_minus1;
uint8_t weighted_pred_flag;
uint8_t weighted_bipred_idc;
int32_t pic_init_qp_minus26;
int32_t pic_init_qs_minus26;
int32_t chroma_qp_index_offset;
uint8_t deblocking_filter_control_present_flag;
uint8_t constrained_intra_pred_flag;
uint8_t redundant_pic_cnt_present_flag;
/* if(more_rbsp_data) */
uint8_t transform_8x8_mode_flag;
uint8_t pic_scaling_matrix_present_flag;
/* if(pic_scaling_matrix_present_flag) */
uint8_t pic_scaling_list_present_flag[8];
uint8_t scaling_lists_4x4[6][16];
uint8_t scaling_lists_8x8[2][64];
int32_t second_chroma_qp_index_offset;
};
struct slice_header {
uint32_t first_mb_in_slice;
uint32_t slice_type;
uint32_t pic_parameter_set_id;
uint32_t frame_num;
int8_t field_pic_flag;
int8_t bottom_field_flag;
uint32_t idr_pic_id;
/* sps->pic_order_cnt_type == 0 */
uint32_t pic_order_cnt_lsb;
int32_t delta_pic_order_cnt_bottom;
/* sps->pic_order_cnt_type == 1 && !sps->delta_pic_order_always_zero_flag */
int32_t delta_pic_order_cnt[2];
/* pps->redundant_pic_cnt_present_flag == 1 */
int32_t redundant_pic_cnt;
/* slice_type == B */
uint8_t direct_spatial_mv_pred_flag;
/* slice_type == P, SP, B */
uint8_t num_ref_idx_active_override_flag;
/* num_ref_idx_active_override_flag == 1 */
uint32_t num_ref_idx_l0_active_minus1;
/* slice type == B */
uint32_t num_ref_idx_l1_active_minus1;
/* ref_pic_list_reordering */
union {
/* slice_type != I && slice_type != SI */
uint8_t ref_pic_list_reordering_flag_l0;
/* slice_type == B */
uint8_t ref_pic_list_reordering_flag_l1;
/* ref_pic_list_reordering_flag_l0 == 1 */
uint32_t reordering_of_pic_nums_idc;
/* reordering_of_pic_nums_idc == 0, 1 */
uint32_t abs_diff_pic_num_minus1;
/* reordering_of_pic_nums_idc == 2) */
uint32_t long_term_pic_num;
} ref_pic_list_reordering;
/* pred_weight_table */
union {
uint32_t luma_log2_weight_denom;
/* chroma_format_idc != 0 */
uint32_t chroma_log2_weight_denom;
int32_t luma_weight_l0[32];
int32_t luma_offset_l0[32];
int32_t chroma_weight_l0[32][2];
int32_t chroma_offset_l0[32][2];
int32_t luma_weight_l1[32];
int32_t luma_offset_l1[32];
int32_t chroma_weight_l1[32][2];
int32_t chroma_offset_l1[32][2];
} pred_weight_table;
/* def_rec_pic_marking */
union {
/* nal_unit_type == NAL_SLICE_IDR */
uint8_t no_output_of_prior_pics_flag;
uint8_t long_term_reference_flag;
/* else */
uint8_t adaptive_ref_pic_marking_mode_flag;
uint32_t memory_management_control_operation;
uint32_t difference_of_pic_nums_minus1;
uint32_t long_term_pic_num;
uint32_t long_term_frame_idx;
uint32_t max_long_term_frame_idx_plus1;
} dec_ref_pic_marking;
};
struct decoded_picture {
//VdpReferenceFrameH264 surface;
struct nal_unit *nal;
};
/* Decoded Picture Buffer */
struct dpb {
uint32_t max_frame_num;
uint32_t prev_ref_frame_number;
uint32_t unused_short_term_frame_num;
uint32_t non_existing_pictures[32];
struct decoded_picture *pictures;
};
#define MAX_FRAME_SIZE 1024*1024
struct nal_parser {
uint8_t buf[MAX_FRAME_SIZE];
int buf_len;
int found_sps;
int found_pps;
int last_nal_res;
int is_idr;
int field; /* 0=top, 1=bottom, -1=both */
int slice;
int slice_cnt;
int have_top;
int have_frame;
struct nal_unit *nal0;
struct nal_unit *nal1;
struct nal_unit *current_nal;
struct nal_unit *last_nal;
/* pic_order_cnt */
int32_t top_field_order_cnt;
int32_t bottom_field_order_cnt;
int32_t pic_order_cnt_msb;
int32_t prev_pic_order_cnt_msb;
int32_t prev_pic_order_cnt_lsb;
struct dpb *dpb;
};
int parse_nal(uint8_t *buf, int buf_len, struct nal_parser *parser);
int seek_for_nal(uint8_t *buf, int buf_len);
struct nal_parser* init_parser();
void free_parser(struct nal_parser *parser);
int parse_frame(struct nal_parser *parser, uint8_t *inbuf, int inbuf_len,
uint8_t **ret_buf, uint32_t *ret_len, uint32_t *ret_slice_cnt);
#endif
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