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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 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 #include "webrtc/common_video/h264/h264_bitstream_parser.h" | 10 #include "webrtc/common_video/h264/h264_bitstream_parser.h" |
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235 RETURN_INV_ON_FAIL(slice_reader.ReadExponentialGolomb(&golomb_tmp)); | 235 RETURN_INV_ON_FAIL(slice_reader.ReadExponentialGolomb(&golomb_tmp)); |
236 } | 236 } |
237 if (memory_management_control_operation == 4) { | 237 if (memory_management_control_operation == 4) { |
238 // max_long_term_frame_idx_plus1: ue(v) | 238 // max_long_term_frame_idx_plus1: ue(v) |
239 RETURN_INV_ON_FAIL(slice_reader.ReadExponentialGolomb(&golomb_tmp)); | 239 RETURN_INV_ON_FAIL(slice_reader.ReadExponentialGolomb(&golomb_tmp)); |
240 } | 240 } |
241 } while (memory_management_control_operation != 0); | 241 } while (memory_management_control_operation != 0); |
242 } | 242 } |
243 } | 243 } |
244 } | 244 } |
245 // cabac not supported: entropy_coding_mode_flag == 0 asserted above. | 245 if (pps_->entropy_coding_mode_flag && |
246 // if (entropy_coding_mode_flag && slice_type != I && slice_type != SI) | 246 slice_type != H264::SliceType::kI && slice_type != H264::SliceType::kSi) { |
247 // cabac_init_idc | 247 // cabac_init_idc: ue(v) |
| 248 RETURN_INV_ON_FAIL(slice_reader.ReadExponentialGolomb(&golomb_tmp)); |
| 249 } |
| 250 |
248 int32_t last_slice_qp_delta; | 251 int32_t last_slice_qp_delta; |
249 RETURN_INV_ON_FAIL( | 252 RETURN_INV_ON_FAIL( |
250 slice_reader.ReadSignedExponentialGolomb(&last_slice_qp_delta)); | 253 slice_reader.ReadSignedExponentialGolomb(&last_slice_qp_delta)); |
251 last_slice_qp_delta_ = rtc::Optional<int32_t>(last_slice_qp_delta); | 254 last_slice_qp_delta_ = rtc::Optional<int32_t>(last_slice_qp_delta); |
252 return kOk; | 255 return kOk; |
253 } | 256 } |
254 | 257 |
255 void H264BitstreamParser::ParseSlice(const uint8_t* slice, size_t length) { | 258 void H264BitstreamParser::ParseSlice(const uint8_t* slice, size_t length) { |
256 H264::NaluType nalu_type = H264::ParseNaluType(slice[0]); | 259 H264::NaluType nalu_type = H264::ParseNaluType(slice[0]); |
257 switch (nalu_type) { | 260 switch (nalu_type) { |
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286 } | 289 } |
287 | 290 |
288 bool H264BitstreamParser::GetLastSliceQp(int* qp) const { | 291 bool H264BitstreamParser::GetLastSliceQp(int* qp) const { |
289 if (!last_slice_qp_delta_ || !pps_) | 292 if (!last_slice_qp_delta_ || !pps_) |
290 return false; | 293 return false; |
291 *qp = 26 + pps_->pic_init_qp_minus26 + *last_slice_qp_delta_; | 294 *qp = 26 + pps_->pic_init_qp_minus26 + *last_slice_qp_delta_; |
292 return true; | 295 return true; |
293 } | 296 } |
294 | 297 |
295 } // namespace webrtc | 298 } // namespace webrtc |
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