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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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26 // The parsed state of the PPS. Only some select values are stored. | 26 // The parsed state of the PPS. Only some select values are stored. |
27 // Add more as they are actually needed. | 27 // Add more as they are actually needed. |
28 struct PpsState { | 28 struct PpsState { |
29 PpsState() = default; | 29 PpsState() = default; |
30 | 30 |
31 bool bottom_field_pic_order_in_frame_present_flag = false; | 31 bool bottom_field_pic_order_in_frame_present_flag = false; |
32 bool weighted_pred_flag = false; | 32 bool weighted_pred_flag = false; |
33 uint32_t weighted_bipred_idc = false; | 33 uint32_t weighted_bipred_idc = false; |
34 uint32_t redundant_pic_cnt_present_flag = 0; | 34 uint32_t redundant_pic_cnt_present_flag = 0; |
35 int pic_init_qp_minus26 = 0; | 35 int pic_init_qp_minus26 = 0; |
36 uint32_t id = 0; | |
37 uint32_t sps_id = 0; | |
38 }; | 36 }; |
39 | 37 |
40 // Unpack RBSP and parse PPS state from the supplied buffer. | 38 // Unpack RBSP and parse PPS state from the supplied buffer. |
41 static rtc::Optional<PpsState> ParsePps(const uint8_t* data, size_t length); | 39 static rtc::Optional<PpsState> ParsePps(const uint8_t* data, size_t length); |
42 | 40 |
43 static rtc::Optional<uint32_t> ParsePpsIdFromSlice(const uint8_t* data, | |
44 size_t length); | |
45 | |
46 protected: | 41 protected: |
47 // Parse the PPS state, for a bit buffer where RBSP decoding has already been | 42 // Parse the PPS state, for a bit buffer where RBSP decoding has already been |
48 // performed. | 43 // performed. |
49 static rtc::Optional<PpsState> ParseInternal(rtc::BitBuffer* bit_buffer); | 44 static rtc::Optional<PpsState> ParseInternal(rtc::BitBuffer* bit_buffer); |
50 }; | 45 }; |
51 | 46 |
52 } // namespace webrtc | 47 } // namespace webrtc |
53 | 48 |
54 #endif // WEBRTC_COMMON_VIDEO_H264_PPS_PARSER_H_ | 49 #endif // WEBRTC_COMMON_VIDEO_H264_PPS_PARSER_H_ |
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