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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // This file contains an implementation of an H264 Annex-B video stream parser. | 5 // This file contains an implementation of an H264 Annex-B video stream parser. |
6 | 6 |
7 #ifndef MEDIA_FILTERS_H264_PARSER_H_ | 7 #ifndef MEDIA_FILTERS_H264_PARSER_H_ |
8 #define MEDIA_FILTERS_H264_PARSER_H_ | 8 #define MEDIA_FILTERS_H264_PARSER_H_ |
9 | 9 |
10 #include <stddef.h> | 10 #include <stddef.h> |
11 #include <stdint.h> | 11 #include <stdint.h> |
12 #include <sys/types.h> | 12 #include <sys/types.h> |
13 | 13 |
14 #include <map> | 14 #include <map> |
15 #include <memory> | 15 #include <memory> |
16 #include <vector> | 16 #include <vector> |
17 | 17 |
18 #include "base/macros.h" | 18 #include "base/macros.h" |
19 #include "base/optional.h" | 19 #include "base/optional.h" |
20 #include "media/base/media_export.h" | 20 #include "media/base/media_export.h" |
21 #include "media/base/ranges.h" | 21 #include "media/base/ranges.h" |
22 #include "media/base/video_codecs.h" | 22 #include "media/base/video_codecs.h" |
23 #include "media/filters/h264_bit_reader.h" | 23 #include "media/filters/h264_bit_reader.h" |
24 #include "ui/gfx/color_space.h" | |
25 | 24 |
26 namespace gfx { | 25 namespace gfx { |
27 class Rect; | 26 class Rect; |
28 class Size; | 27 class Size; |
29 } | 28 } |
30 | 29 |
31 namespace media { | 30 namespace media { |
32 | 31 |
33 struct SubsampleEntry; | 32 struct SubsampleEntry; |
34 | 33 |
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151 int sar_width; // Set to 0 when not specified. | 150 int sar_width; // Set to 0 when not specified. |
152 int sar_height; // Set to 0 when not specified. | 151 int sar_height; // Set to 0 when not specified. |
153 bool bitstream_restriction_flag; | 152 bool bitstream_restriction_flag; |
154 int max_num_reorder_frames; | 153 int max_num_reorder_frames; |
155 int max_dec_frame_buffering; | 154 int max_dec_frame_buffering; |
156 bool timing_info_present_flag; | 155 bool timing_info_present_flag; |
157 int num_units_in_tick; | 156 int num_units_in_tick; |
158 int time_scale; | 157 int time_scale; |
159 bool fixed_frame_rate_flag; | 158 bool fixed_frame_rate_flag; |
160 | 159 |
161 bool video_signal_type_present_flag; | |
162 int video_format; | |
163 bool video_full_range_flag; | |
164 bool colour_description_present_flag; | |
165 int colour_primaries; | |
166 int transfer_characteristics; | |
167 int matrix_coefficients; | |
168 | |
169 // TODO(posciak): actually parse these instead of ParseAndIgnoreHRDParameters. | 160 // TODO(posciak): actually parse these instead of ParseAndIgnoreHRDParameters. |
170 bool nal_hrd_parameters_present_flag; | 161 bool nal_hrd_parameters_present_flag; |
171 int cpb_cnt_minus1; | 162 int cpb_cnt_minus1; |
172 int bit_rate_scale; | 163 int bit_rate_scale; |
173 int cpb_size_scale; | 164 int cpb_size_scale; |
174 int bit_rate_value_minus1[32]; | 165 int bit_rate_value_minus1[32]; |
175 int cpb_size_value_minus1[32]; | 166 int cpb_size_value_minus1[32]; |
176 bool cbr_flag[32]; | 167 bool cbr_flag[32]; |
177 int initial_cpb_removal_delay_length_minus_1; | 168 int initial_cpb_removal_delay_length_minus_1; |
178 int cpb_removal_delay_length_minus1; | 169 int cpb_removal_delay_length_minus1; |
179 int dpb_output_delay_length_minus1; | 170 int dpb_output_delay_length_minus1; |
180 int time_offset_length; | 171 int time_offset_length; |
181 | 172 |
182 bool low_delay_hrd_flag; | 173 bool low_delay_hrd_flag; |
183 | 174 |
184 int chroma_array_type; | 175 int chroma_array_type; |
185 | 176 |
186 // Helpers to compute frequently-used values. These methods return | 177 // Helpers to compute frequently-used values. These methods return |
187 // base::nullopt if they encounter integer overflow. They do not verify that | 178 // base::nullopt if they encounter integer overflow. They do not verify that |
188 // the results are in-spec for the given profile or level. | 179 // the results are in-spec for the given profile or level. |
189 base::Optional<gfx::Size> GetCodedSize() const; | 180 base::Optional<gfx::Size> GetCodedSize() const; |
190 base::Optional<gfx::Rect> GetVisibleRect() const; | 181 base::Optional<gfx::Rect> GetVisibleRect() const; |
191 gfx::ColorSpace GetColorSpace() const; | |
192 }; | 182 }; |
193 | 183 |
194 struct MEDIA_EXPORT H264PPS { | 184 struct MEDIA_EXPORT H264PPS { |
195 H264PPS(); | 185 H264PPS(); |
196 | 186 |
197 int pic_parameter_set_id; | 187 int pic_parameter_set_id; |
198 int seq_parameter_set_id; | 188 int seq_parameter_set_id; |
199 bool entropy_coding_mode_flag; | 189 bool entropy_coding_mode_flag; |
200 bool bottom_field_pic_order_in_frame_present_flag; | 190 bool bottom_field_pic_order_in_frame_present_flag; |
201 int num_slice_groups_minus1; | 191 int num_slice_groups_minus1; |
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503 // Ranges of encrypted bytes in the buffer passed to | 493 // Ranges of encrypted bytes in the buffer passed to |
504 // SetEncryptedStream(). | 494 // SetEncryptedStream(). |
505 Ranges<const uint8_t*> encrypted_ranges_; | 495 Ranges<const uint8_t*> encrypted_ranges_; |
506 | 496 |
507 DISALLOW_COPY_AND_ASSIGN(H264Parser); | 497 DISALLOW_COPY_AND_ASSIGN(H264Parser); |
508 }; | 498 }; |
509 | 499 |
510 } // namespace media | 500 } // namespace media |
511 | 501 |
512 #endif // MEDIA_FILTERS_H264_PARSER_H_ | 502 #endif // MEDIA_FILTERS_H264_PARSER_H_ |
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