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8 #ifndef __NAL_H264_H__
9 #define __NAL_H264_H__
10
11 #include <linux/kernel.h>
12 #include <linux/types.h>
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20 struct nal_h264_hrd_parameters {
21 unsigned int cpb_cnt_minus1;
22 unsigned int bit_rate_scale;
23 unsigned int cpb_size_scale;
24 struct {
25 int bit_rate_value_minus1[16];
26 int cpb_size_value_minus1[16];
27 unsigned int cbr_flag[16];
28 };
29 unsigned int initial_cpb_removal_delay_length_minus1;
30 unsigned int cpb_removal_delay_length_minus1;
31 unsigned int dpb_output_delay_length_minus1;
32 unsigned int time_offset_length;
33 };
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40
41 struct nal_h264_vui_parameters {
42 unsigned int aspect_ratio_info_present_flag;
43 struct {
44 unsigned int aspect_ratio_idc;
45 unsigned int sar_width;
46 unsigned int sar_height;
47 };
48 unsigned int overscan_info_present_flag;
49 unsigned int overscan_appropriate_flag;
50 unsigned int video_signal_type_present_flag;
51 struct {
52 unsigned int video_format;
53 unsigned int video_full_range_flag;
54 unsigned int colour_description_present_flag;
55 struct {
56 unsigned int colour_primaries;
57 unsigned int transfer_characteristics;
58 unsigned int matrix_coefficients;
59 };
60 };
61 unsigned int chroma_loc_info_present_flag;
62 struct {
63 unsigned int chroma_sample_loc_type_top_field;
64 unsigned int chroma_sample_loc_type_bottom_field;
65 };
66 unsigned int timing_info_present_flag;
67 struct {
68 unsigned int num_units_in_tick;
69 unsigned int time_scale;
70 unsigned int fixed_frame_rate_flag;
71 };
72 unsigned int nal_hrd_parameters_present_flag;
73 struct nal_h264_hrd_parameters nal_hrd_parameters;
74 unsigned int vcl_hrd_parameters_present_flag;
75 struct nal_h264_hrd_parameters vcl_hrd_parameters;
76 unsigned int low_delay_hrd_flag;
77 unsigned int pic_struct_present_flag;
78 unsigned int bitstream_restriction_flag;
79 struct {
80 unsigned int motion_vectors_over_pic_boundaries_flag;
81 unsigned int max_bytes_per_pic_denom;
82 unsigned int max_bits_per_mb_denom;
83 unsigned int log2_max_mv_length_horizontal;
84 unsigned int log21_max_mv_length_vertical;
85 unsigned int max_num_reorder_frames;
86 unsigned int max_dec_frame_buffering;
87 };
88 };
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96 struct nal_h264_sps {
97 unsigned int profile_idc;
98 unsigned int constraint_set0_flag;
99 unsigned int constraint_set1_flag;
100 unsigned int constraint_set2_flag;
101 unsigned int constraint_set3_flag;
102 unsigned int constraint_set4_flag;
103 unsigned int constraint_set5_flag;
104 unsigned int reserved_zero_2bits;
105 unsigned int level_idc;
106 unsigned int seq_parameter_set_id;
107 struct {
108 unsigned int chroma_format_idc;
109 unsigned int separate_colour_plane_flag;
110 unsigned int bit_depth_luma_minus8;
111 unsigned int bit_depth_chroma_minus8;
112 unsigned int qpprime_y_zero_transform_bypass_flag;
113 unsigned int seq_scaling_matrix_present_flag;
114 };
115 unsigned int log2_max_frame_num_minus4;
116 unsigned int pic_order_cnt_type;
117 union {
118 unsigned int log2_max_pic_order_cnt_lsb_minus4;
119 struct {
120 unsigned int delta_pic_order_always_zero_flag;
121 int offset_for_non_ref_pic;
122 int offset_for_top_to_bottom_field;
123 unsigned int num_ref_frames_in_pic_order_cnt_cycle;
124 int offset_for_ref_frame[255];
125 };
126 };
127 unsigned int max_num_ref_frames;
128 unsigned int gaps_in_frame_num_value_allowed_flag;
129 unsigned int pic_width_in_mbs_minus1;
130 unsigned int pic_height_in_map_units_minus1;
131 unsigned int frame_mbs_only_flag;
132 unsigned int mb_adaptive_frame_field_flag;
133 unsigned int direct_8x8_inference_flag;
134 unsigned int frame_cropping_flag;
135 struct {
136 unsigned int crop_left;
137 unsigned int crop_right;
138 unsigned int crop_top;
139 unsigned int crop_bottom;
140 };
141 unsigned int vui_parameters_present_flag;
142 struct nal_h264_vui_parameters vui;
143 };
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151 struct nal_h264_pps {
152 unsigned int pic_parameter_set_id;
153 unsigned int seq_parameter_set_id;
154 unsigned int entropy_coding_mode_flag;
155 unsigned int bottom_field_pic_order_in_frame_present_flag;
156 unsigned int num_slice_groups_minus1;
157 unsigned int slice_group_map_type;
158 union {
159 unsigned int run_length_minus1[8];
160 struct {
161 unsigned int top_left[8];
162 unsigned int bottom_right[8];
163 };
164 struct {
165 unsigned int slice_group_change_direction_flag;
166 unsigned int slice_group_change_rate_minus1;
167 };
168 struct {
169 unsigned int pic_size_in_map_units_minus1;
170 unsigned int slice_group_id[8];
171 };
172 };
173 unsigned int num_ref_idx_l0_default_active_minus1;
174 unsigned int num_ref_idx_l1_default_active_minus1;
175 unsigned int weighted_pred_flag;
176 unsigned int weighted_bipred_idc;
177 int pic_init_qp_minus26;
178 int pic_init_qs_minus26;
179 int chroma_qp_index_offset;
180 unsigned int deblocking_filter_control_present_flag;
181 unsigned int constrained_intra_pred_flag;
182 unsigned int redundant_pic_cnt_present_flag;
183 struct {
184 unsigned int transform_8x8_mode_flag;
185 unsigned int pic_scaling_matrix_present_flag;
186 int second_chroma_qp_index_offset;
187 };
188 };
189
190 int nal_h264_profile_from_v4l2(enum v4l2_mpeg_video_h264_profile profile);
191 int nal_h264_level_from_v4l2(enum v4l2_mpeg_video_h264_level level);
192
193 ssize_t nal_h264_write_sps(const struct device *dev,
194 void *dest, size_t n, struct nal_h264_sps *sps);
195 ssize_t nal_h264_read_sps(const struct device *dev,
196 struct nal_h264_sps *sps, void *src, size_t n);
197 void nal_h264_print_sps(const struct device *dev, struct nal_h264_sps *sps);
198
199 ssize_t nal_h264_write_pps(const struct device *dev,
200 void *dest, size_t n, struct nal_h264_pps *pps);
201 ssize_t nal_h264_read_pps(const struct device *dev,
202 struct nal_h264_pps *pps, void *src, size_t n);
203 void nal_h264_print_pps(const struct device *dev, struct nal_h264_pps *pps);
204
205 ssize_t nal_h264_write_filler(const struct device *dev, void *dest, size_t n);
206 ssize_t nal_h264_read_filler(const struct device *dev, void *src, size_t n);
207
208 #endif