lavc: Add per-thread surfaces in get_hw_frame_parameters()
[ffmpeg.git] / libavcodec / cbs_h264.h
1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * Libav is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18
19 #ifndef AVCODEC_CBS_H264_H
20 #define AVCODEC_CBS_H264_H
21
22 #include <stddef.h>
23 #include <stdint.h>
24
25 #include "cbs_h2645.h"
26 #include "h264.h"
27
28
29 enum {
30     // This limit is arbitrary - it is sufficient for one message of each
31     // type plus some repeats, and will therefore easily cover all sane
32     // streams.  However, it is possible to make technically-valid streams
33     // for which it will fail (for example, by including a large number of
34     // user-data-unregistered messages).
35     H264_MAX_SEI_PAYLOADS = 64,
36 };
37
38
39 typedef struct H264RawNALUnitHeader {
40     uint8_t forbidden_zero_bit;
41     uint8_t nal_ref_idc;
42     uint8_t nal_unit_type;
43
44     uint8_t svc_extension_flag;
45     uint8_t avc_3d_extension_flag;
46 } H264RawNALUnitHeader;
47
48 typedef struct H264RawScalingList {
49     int8_t delta_scale[64];
50 } H264RawScalingList;
51
52 typedef struct H264RawHRD {
53     uint8_t cpb_cnt_minus1;
54     uint8_t bit_rate_scale;
55     uint8_t cpb_size_scale;
56
57     uint32_t bit_rate_value_minus1[H264_MAX_CPB_CNT];
58     uint32_t cpb_size_value_minus1[H264_MAX_CPB_CNT];
59     uint8_t cbr_flag[H264_MAX_CPB_CNT];
60
61     uint8_t initial_cpb_removal_delay_length_minus1;
62     uint8_t cpb_removal_delay_length_minus1;
63     uint8_t dpb_output_delay_length_minus1;
64     uint8_t time_offset_length;
65 } H264RawHRD;
66
67 typedef struct H264RawVUI {
68     uint8_t aspect_ratio_info_present_flag;
69     uint8_t aspect_ratio_idc;
70     uint16_t sar_width;
71     uint16_t sar_height;
72
73     uint8_t overscan_info_present_flag;
74     uint8_t overscan_appropriate_flag;
75
76     uint8_t video_signal_type_present_flag;
77     uint8_t video_format;
78     uint8_t video_full_range_flag;
79     uint8_t colour_description_present_flag;
80     uint8_t colour_primaries;
81     uint8_t transfer_characteristics;
82     uint8_t matrix_coefficients;
83
84     uint8_t chroma_loc_info_present_flag;
85     uint8_t chroma_sample_loc_type_top_field;
86     uint8_t chroma_sample_loc_type_bottom_field;
87
88     uint8_t timing_info_present_flag;
89     uint32_t num_units_in_tick;
90     uint32_t time_scale;
91     uint8_t fixed_frame_rate_flag;
92
93     uint8_t nal_hrd_parameters_present_flag;
94     H264RawHRD nal_hrd_parameters;
95     uint8_t vcl_hrd_parameters_present_flag;
96     H264RawHRD vcl_hrd_parameters;
97     uint8_t low_delay_hrd_flag;
98
99     uint8_t pic_struct_present_flag;
100
101     uint8_t bitstream_restriction_flag;
102     uint8_t motion_vectors_over_pic_boundaries_flag;
103     uint8_t max_bytes_per_pic_denom;
104     uint8_t max_bits_per_mb_denom;
105     uint8_t log2_max_mv_length_horizontal;
106     uint8_t log2_max_mv_length_vertical;
107     uint8_t max_num_reorder_frames;
108     uint8_t max_dec_frame_buffering;
109 } H264RawVUI;
110
111 typedef struct H264RawSPS {
112     H264RawNALUnitHeader nal_unit_header;
113
114     uint8_t profile_idc;
115     uint8_t constraint_set0_flag;
116     uint8_t constraint_set1_flag;
117     uint8_t constraint_set2_flag;
118     uint8_t constraint_set3_flag;
119     uint8_t constraint_set4_flag;
120     uint8_t constraint_set5_flag;
121     uint8_t reserved_zero_2bits;
122     uint8_t level_idc;
123
124     uint8_t seq_parameter_set_id;
125
126     uint8_t chroma_format_idc;
127     uint8_t separate_colour_plane_flag;
128     uint8_t bit_depth_luma_minus8;
129     uint8_t bit_depth_chroma_minus8;
130     uint8_t qpprime_y_zero_transform_bypass_flag;
131
132     uint8_t seq_scaling_matrix_present_flag;
133     uint8_t seq_scaling_list_present_flag[12];
134     H264RawScalingList scaling_list_4x4[6];
135     H264RawScalingList scaling_list_8x8[6];
136
137     uint8_t log2_max_frame_num_minus4;
138     uint8_t pic_order_cnt_type;
139     uint8_t log2_max_pic_order_cnt_lsb_minus4;
140     uint8_t delta_pic_order_always_zero_flag;
141     int32_t offset_for_non_ref_pic;
142     int32_t offset_for_top_to_bottom_field;
143     uint8_t num_ref_frames_in_pic_order_cnt_cycle;
144     int32_t offset_for_ref_frame[256];
145
146     uint8_t max_num_ref_frames;
147     uint8_t gaps_in_frame_num_allowed_flag;
148
149     uint16_t pic_width_in_mbs_minus1;
150     uint16_t pic_height_in_map_units_minus1;
151
152     uint8_t frame_mbs_only_flag;
153     uint8_t mb_adaptive_frame_field_flag;
154     uint8_t direct_8x8_inference_flag;
155
156     uint8_t frame_cropping_flag;
157     uint16_t frame_crop_left_offset;
158     uint16_t frame_crop_right_offset;
159     uint16_t frame_crop_top_offset;
160     uint16_t frame_crop_bottom_offset;
161
162     uint8_t vui_parameters_present_flag;
163     H264RawVUI vui;
164 } H264RawSPS;
165
166 typedef struct H264RawSPSExtension {
167     H264RawNALUnitHeader nal_unit_header;
168
169     uint8_t seq_parameter_set_id;
170
171     uint8_t aux_format_idc;
172     uint8_t bit_depth_aux_minus8;
173     uint8_t alpha_incr_flag;
174     uint16_t alpha_opaque_value;
175     uint16_t alpha_transparent_value;
176
177     uint8_t additional_extension_flag;
178 } H264RawSPSExtension;
179
180 typedef struct H264RawPPS {
181     H264RawNALUnitHeader nal_unit_header;
182
183     uint8_t pic_parameter_set_id;
184     uint8_t seq_parameter_set_id;
185
186     uint8_t entropy_coding_mode_flag;
187     uint8_t bottom_field_pic_order_in_frame_present_flag;
188
189     uint8_t num_slice_groups_minus1;
190     uint8_t slice_group_map_type;
191     uint16_t run_length_minus1[H264_MAX_SLICE_GROUPS];
192     uint16_t top_left[H264_MAX_SLICE_GROUPS];
193     uint16_t bottom_right[H264_MAX_SLICE_GROUPS];
194     uint8_t slice_group_change_direction_flag;
195     uint16_t slice_group_change_rate_minus1;
196     uint16_t pic_size_in_map_units_minus1;
197     uint8_t slice_group_id[H264_MAX_MB_PIC_SIZE];
198
199     uint8_t num_ref_idx_l0_default_active_minus1;
200     uint8_t num_ref_idx_l1_default_active_minus1;
201
202     uint8_t weighted_pred_flag;
203     uint8_t weighted_bipred_idc;
204
205     int8_t pic_init_qp_minus26;
206     int8_t pic_init_qs_minus26;
207     int8_t chroma_qp_index_offset;
208
209     uint8_t deblocking_filter_control_present_flag;
210     uint8_t constrained_intra_pred_flag;
211
212     uint8_t more_rbsp_data;
213
214     uint8_t redundant_pic_cnt_present_flag;
215     uint8_t transform_8x8_mode_flag;
216
217     uint8_t pic_scaling_matrix_present_flag;
218     uint8_t pic_scaling_list_present_flag[12];
219     H264RawScalingList scaling_list_4x4[6];
220     H264RawScalingList scaling_list_8x8[6];
221
222     int8_t second_chroma_qp_index_offset;
223 } H264RawPPS;
224
225 typedef struct H264RawAUD {
226     H264RawNALUnitHeader nal_unit_header;
227
228     uint8_t primary_pic_type;
229 } H264RawAUD;
230
231 typedef struct H264RawSEIBufferingPeriod {
232     uint8_t seq_parameter_set_id;
233     struct {
234         uint32_t initial_cpb_removal_delay[H264_MAX_CPB_CNT];
235         uint32_t initial_cpb_removal_delay_offset[H264_MAX_CPB_CNT];
236     } nal, vcl;
237 } H264RawSEIBufferingPeriod;
238
239 typedef struct H264RawSEIPicTimestamp {
240     uint8_t ct_type;
241     uint8_t nuit_field_based_flag;
242     uint8_t counting_type;
243     uint8_t full_timestamp_flag;
244     uint8_t discontinuity_flag;
245     uint8_t cnt_dropped_flag;
246     uint8_t n_frames;
247     uint8_t seconds_flag;
248     uint8_t seconds_value;
249     uint8_t minutes_flag;
250     uint8_t minutes_value;
251     uint8_t hours_flag;
252     uint8_t hours_value;
253     uint32_t time_offset;
254 } H264RawSEIPicTimestamp;
255
256 typedef struct H264RawSEIPicTiming {
257     uint32_t cpb_removal_delay;
258     uint32_t dpb_output_delay;
259     uint8_t pic_struct;
260     uint8_t clock_timestamp_flag[3];
261     H264RawSEIPicTimestamp timestamp[3];
262 } H264RawSEIPicTiming;
263
264 typedef struct H264RawSEIUserDataRegistered {
265     uint8_t itu_t_t35_country_code;
266     uint8_t itu_t_t35_country_code_extension_byte;
267     uint8_t *data;
268     size_t data_length;
269 } H264RawSEIUserDataRegistered;
270
271 typedef struct H264RawSEIUserDataUnregistered {
272     uint8_t uuid_iso_iec_11578[16];
273     uint8_t *data;
274     size_t data_length;
275 } H264RawSEIUserDataUnregistered;
276
277 typedef struct H264RawSEIRecoveryPoint {
278     uint16_t recovery_frame_cnt;
279     uint8_t exact_match_flag;
280     uint8_t broken_link_flag;
281     uint8_t changing_slice_group_idc;
282 } H264RawSEIRecoveryPoint;
283
284 typedef struct H264RawSEIDisplayOrientation {
285     uint8_t display_orientation_cancel_flag;
286     uint8_t hor_flip;
287     uint8_t ver_flip;
288     uint16_t anticlockwise_rotation;
289     uint16_t display_orientation_repetition_period;
290     uint8_t display_orientation_extension_flag;
291 } H264RawSEIDisplayOrientation;
292
293 typedef struct H264RawSEIPayload {
294     uint32_t payload_type;
295     uint32_t payload_size;
296     union {
297         H264RawSEIBufferingPeriod buffering_period;
298         H264RawSEIPicTiming pic_timing;
299         // H264RawSEIFiller filler -> no fields.
300         H264RawSEIUserDataRegistered user_data_registered;
301         H264RawSEIUserDataUnregistered user_data_unregistered;
302         H264RawSEIRecoveryPoint recovery_point;
303         H264RawSEIDisplayOrientation display_orientation;
304         struct {
305             uint8_t *data;
306             size_t data_length;
307         } other;
308     } payload;
309 } H264RawSEIPayload;
310
311 typedef struct H264RawSEI {
312     H264RawNALUnitHeader nal_unit_header;
313
314     H264RawSEIPayload payload[H264_MAX_SEI_PAYLOADS];
315     uint8_t payload_count;
316 } H264RawSEI;
317
318 typedef struct H264RawSliceHeader {
319     H264RawNALUnitHeader nal_unit_header;
320
321     uint32_t first_mb_in_slice;
322     uint8_t slice_type;
323
324     uint8_t pic_parameter_set_id;
325
326     uint8_t colour_plane_id;
327
328     uint16_t frame_num;
329     uint8_t field_pic_flag;
330     uint8_t bottom_field_flag;
331
332     uint16_t idr_pic_id;
333
334     uint16_t pic_order_cnt_lsb;
335     int32_t delta_pic_order_cnt_bottom;
336     int32_t delta_pic_order_cnt[2];
337
338     uint8_t redundant_pic_cnt;
339     uint8_t direct_spatial_mv_pred_flag;
340
341     uint8_t num_ref_idx_active_override_flag;
342     uint8_t num_ref_idx_l0_active_minus1;
343     uint8_t num_ref_idx_l1_active_minus1;
344
345     uint8_t ref_pic_list_modification_flag_l0;
346     uint8_t ref_pic_list_modification_flag_l1;
347     struct {
348         uint8_t modification_of_pic_nums_idc;
349         int32_t abs_diff_pic_num_minus1;
350         uint8_t long_term_pic_num;
351     } rplm_l0[H264_MAX_RPLM_COUNT], rplm_l1[H264_MAX_RPLM_COUNT];
352
353     uint8_t luma_log2_weight_denom;
354     uint8_t chroma_log2_weight_denom;
355
356     uint8_t luma_weight_l0_flag[H264_MAX_REFS];
357     int8_t luma_weight_l0[H264_MAX_REFS];
358     int8_t luma_offset_l0[H264_MAX_REFS];
359     uint8_t chroma_weight_l0_flag[H264_MAX_REFS];
360     int8_t chroma_weight_l0[H264_MAX_REFS][2];
361     int8_t chroma_offset_l0[H264_MAX_REFS][2];
362
363     uint8_t luma_weight_l1_flag[H264_MAX_REFS];
364     int8_t luma_weight_l1[H264_MAX_REFS];
365     int8_t luma_offset_l1[H264_MAX_REFS];
366     uint8_t chroma_weight_l1_flag[H264_MAX_REFS];
367     int8_t chroma_weight_l1[H264_MAX_REFS][2];
368     int8_t chroma_offset_l1[H264_MAX_REFS][2];
369
370     uint8_t no_output_of_prior_pics_flag;
371     uint8_t long_term_reference_flag;
372
373     uint8_t adaptive_ref_pic_marking_mode_flag;
374     struct {
375         uint8_t memory_management_control_operation;
376         int32_t difference_of_pic_nums_minus1;
377         uint8_t long_term_pic_num;
378         uint8_t long_term_frame_idx;
379         uint8_t max_long_term_frame_idx_plus1;
380     } mmco[H264_MAX_MMCO_COUNT];
381
382     uint8_t cabac_init_idc;
383
384     int8_t slice_qp_delta;
385
386     uint8_t sp_for_switch_flag;
387     int8_t slice_qs_delta;
388
389     uint8_t disable_deblocking_filter_idc;
390     int8_t slice_alpha_c0_offset_div2;
391     int8_t slice_beta_offset_div2;
392
393     uint16_t slice_group_change_cycle;
394 } H264RawSliceHeader;
395
396 typedef struct H264RawSlice {
397     H264RawSliceHeader header;
398
399     uint8_t *data;
400     size_t   data_size;
401     int      data_bit_start;
402 } H264RawSlice;
403
404
405 typedef struct CodedBitstreamH264Context {
406     // Reader/writer context in common with the H.265 implementation.
407     CodedBitstreamH2645Context common;
408
409     // All currently available parameter sets.  These are updated when
410     // any parameter set NAL unit is read/written with this context.
411     H264RawSPS *sps[H264_MAX_SPS_COUNT];
412     H264RawPPS *pps[H264_MAX_PPS_COUNT];
413
414     // The currently active parameter sets.  These are updated when any
415     // NAL unit refers to the relevant parameter set.  These pointers
416     // must also be present in the arrays above.
417     const H264RawSPS *active_sps;
418     const H264RawPPS *active_pps;
419
420     // The NAL unit type of the most recent normal slice.  This is required
421     // to be able to read/write auxiliary slices, because IdrPicFlag is
422     // otherwise unknown.
423     uint8_t last_slice_nal_unit_type;
424 } CodedBitstreamH264Context;
425
426
427 #endif /* AVCODEC_CBS_H264_H */