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1 /* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 1 /* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
2 * | 2 * |
3 * Use of this source code is governed by a BSD-style license | 3 * Use of this source code is governed by a BSD-style license |
4 * that can be found in the LICENSE file in the root of the source | 4 * that can be found in the LICENSE file in the root of the source |
5 * tree. An additional intellectual property rights grant can be found | 5 * tree. An additional intellectual property rights grant can be found |
6 * in the file PATENTS. All contributing project authors may | 6 * in the file PATENTS. All contributing project authors may |
7 * be found in the AUTHORS file in the root of the source tree. | 7 * be found in the AUTHORS file in the root of the source tree. |
8 */ | 8 */ |
9 | 9 |
10 #include <stdlib.h> | 10 #include <stdlib.h> |
11 #include <algorithm> | 11 #include <algorithm> |
12 | 12 |
13 #include "vpx/vpx_encoder.h" | 13 #include "vpx/vpx_encoder.h" |
14 #include "vpx/vp8cx.h" | 14 #include "vpx/vp8cx.h" |
15 #include "webrtc/modules/video_coding/include/video_codec_interface.h" | 15 #include "webrtc/modules/video_coding/include/video_codec_interface.h" |
16 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8_common_types.h" | 16 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8_common_types.h" |
17 #include "webrtc/modules/video_coding/codecs/vp8/temporal_layers.h" | 17 #include "webrtc/modules/video_coding/codecs/vp8/temporal_layers.h" |
18 | 18 |
19 // This file implements logic to adapt the number of temporal layers based on | 19 // This file implements logic to adapt the number of temporal layers based on |
20 // input frame rate in order to avoid having the base layer being relaying at | 20 // input frame rate in order to avoid having the base layer being relaying at |
21 // a below acceptable framerate. | 21 // a below acceptable framerate. |
22 namespace webrtc { | 22 namespace webrtc { |
23 namespace { | 23 namespace { |
24 enum { | 24 enum { |
25 kTemporalUpdateLast = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | | 25 kTemporalUpdateLast = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
26 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF, | 26 VP8_EFLAG_NO_REF_GF | |
| 27 VP8_EFLAG_NO_REF_ARF, |
27 | 28 |
28 kTemporalUpdateGolden = | 29 kTemporalUpdateGolden = |
29 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, | 30 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, |
30 | 31 |
31 kTemporalUpdateGoldenWithoutDependency = | 32 kTemporalUpdateGoldenWithoutDependency = |
32 kTemporalUpdateGolden | VP8_EFLAG_NO_REF_GF, | 33 kTemporalUpdateGolden | VP8_EFLAG_NO_REF_GF, |
33 | 34 |
34 kTemporalUpdateAltref = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST, | 35 kTemporalUpdateAltref = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST, |
35 | 36 |
36 kTemporalUpdateAltrefWithoutDependency = | 37 kTemporalUpdateAltrefWithoutDependency = |
37 kTemporalUpdateAltref | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_GF, | 38 kTemporalUpdateAltref | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_GF, |
38 | 39 |
39 kTemporalUpdateNone = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | | 40 kTemporalUpdateNone = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
40 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY, | 41 VP8_EFLAG_NO_UPD_LAST | |
| 42 VP8_EFLAG_NO_UPD_ENTROPY, |
41 | 43 |
42 kTemporalUpdateNoneNoRefAltref = kTemporalUpdateNone | VP8_EFLAG_NO_REF_ARF, | 44 kTemporalUpdateNoneNoRefAltref = kTemporalUpdateNone | VP8_EFLAG_NO_REF_ARF, |
43 | 45 |
44 kTemporalUpdateNoneNoRefGoldenRefAltRef = | 46 kTemporalUpdateNoneNoRefGoldenRefAltRef = |
45 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | | 47 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | |
46 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY, | 48 VP8_EFLAG_NO_UPD_LAST | |
| 49 VP8_EFLAG_NO_UPD_ENTROPY, |
47 | 50 |
48 kTemporalUpdateGoldenWithoutDependencyRefAltRef = | 51 kTemporalUpdateGoldenWithoutDependencyRefAltRef = |
49 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, | 52 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, |
50 | 53 |
51 kTemporalUpdateLastRefAltRef = | 54 kTemporalUpdateLastRefAltRef = |
52 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF, | 55 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF, |
53 | 56 |
54 kTemporalUpdateGoldenRefAltRef = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, | 57 kTemporalUpdateGoldenRefAltRef = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST, |
55 | 58 |
56 kTemporalUpdateLastAndGoldenRefAltRef = | 59 kTemporalUpdateLastAndGoldenRefAltRef = |
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126 cfg->ts_rate_decimator[0] = 1; | 129 cfg->ts_rate_decimator[0] = 1; |
127 cfg->ts_periodicity = layer_ids_length_; | 130 cfg->ts_periodicity = layer_ids_length_; |
128 } break; | 131 } break; |
129 | 132 |
130 case 2: { | 133 case 2: { |
131 static const unsigned int layer_ids[] = {0u, 1u}; | 134 static const unsigned int layer_ids[] = {0u, 1u}; |
132 layer_ids_ = layer_ids; | 135 layer_ids_ = layer_ids; |
133 layer_ids_length_ = sizeof(layer_ids) / sizeof(*layer_ids); | 136 layer_ids_length_ = sizeof(layer_ids) / sizeof(*layer_ids); |
134 | 137 |
135 static const int encode_flags[] = { | 138 static const int encode_flags[] = { |
136 kTemporalUpdateLastAndGoldenRefAltRef, | 139 kTemporalUpdateLastAndGoldenRefAltRef, |
137 kTemporalUpdateGoldenWithoutDependencyRefAltRef, | 140 kTemporalUpdateGoldenWithoutDependencyRefAltRef, |
138 kTemporalUpdateLastRefAltRef, kTemporalUpdateGoldenRefAltRef, | 141 kTemporalUpdateLastRefAltRef, |
139 kTemporalUpdateLastRefAltRef, kTemporalUpdateGoldenRefAltRef, | 142 kTemporalUpdateGoldenRefAltRef, |
140 kTemporalUpdateLastRefAltRef, kTemporalUpdateNone | 143 kTemporalUpdateLastRefAltRef, |
141 }; | 144 kTemporalUpdateGoldenRefAltRef, |
| 145 kTemporalUpdateLastRefAltRef, |
| 146 kTemporalUpdateNone}; |
142 encode_flags_length_ = sizeof(encode_flags) / sizeof(*layer_ids); | 147 encode_flags_length_ = sizeof(encode_flags) / sizeof(*layer_ids); |
143 encode_flags_ = encode_flags; | 148 encode_flags_ = encode_flags; |
144 | 149 |
145 cfg->ts_rate_decimator[0] = 2; | 150 cfg->ts_rate_decimator[0] = 2; |
146 cfg->ts_rate_decimator[1] = 1; | 151 cfg->ts_rate_decimator[1] = 1; |
147 cfg->ts_periodicity = layer_ids_length_; | 152 cfg->ts_periodicity = layer_ids_length_; |
148 } break; | 153 } break; |
149 | 154 |
150 case 3: { | 155 case 3: { |
151 static const unsigned int layer_ids[] = {0u, 2u, 1u, 2u}; | 156 static const unsigned int layer_ids[] = {0u, 2u, 1u, 2u}; |
152 layer_ids_ = layer_ids; | 157 layer_ids_ = layer_ids; |
153 layer_ids_length_ = sizeof(layer_ids) / sizeof(*layer_ids); | 158 layer_ids_length_ = sizeof(layer_ids) / sizeof(*layer_ids); |
154 | 159 |
155 static const int encode_flags[] = { | 160 static const int encode_flags[] = { |
156 kTemporalUpdateLastAndGoldenRefAltRef, | 161 kTemporalUpdateLastAndGoldenRefAltRef, |
157 kTemporalUpdateNoneNoRefGoldenRefAltRef, | 162 kTemporalUpdateNoneNoRefGoldenRefAltRef, |
158 kTemporalUpdateGoldenWithoutDependencyRefAltRef, kTemporalUpdateNone, | 163 kTemporalUpdateGoldenWithoutDependencyRefAltRef, |
159 kTemporalUpdateLastRefAltRef, kTemporalUpdateNone, | 164 kTemporalUpdateNone, |
160 kTemporalUpdateGoldenRefAltRef, kTemporalUpdateNone | 165 kTemporalUpdateLastRefAltRef, |
161 }; | 166 kTemporalUpdateNone, |
| 167 kTemporalUpdateGoldenRefAltRef, |
| 168 kTemporalUpdateNone}; |
162 encode_flags_length_ = sizeof(encode_flags) / sizeof(*layer_ids); | 169 encode_flags_length_ = sizeof(encode_flags) / sizeof(*layer_ids); |
163 encode_flags_ = encode_flags; | 170 encode_flags_ = encode_flags; |
164 | 171 |
165 cfg->ts_rate_decimator[0] = 4; | 172 cfg->ts_rate_decimator[0] = 4; |
166 cfg->ts_rate_decimator[1] = 2; | 173 cfg->ts_rate_decimator[1] = 2; |
167 cfg->ts_rate_decimator[2] = 1; | 174 cfg->ts_rate_decimator[2] = 1; |
168 cfg->ts_periodicity = layer_ids_length_; | 175 cfg->ts_periodicity = layer_ids_length_; |
169 } break; | 176 } break; |
170 | 177 |
171 default: | 178 default: |
172 assert(false); | 179 assert(false); |
173 return false; | 180 return false; |
174 } | 181 } |
175 memcpy( | 182 memcpy(cfg->ts_layer_id, layer_ids_, |
176 cfg->ts_layer_id, layer_ids_, sizeof(unsigned int) * layer_ids_length_); | 183 sizeof(unsigned int) * layer_ids_length_); |
177 return true; | 184 return true; |
178 } | 185 } |
179 | 186 |
180 virtual int EncodeFlags(uint32_t timestamp) { | 187 virtual int EncodeFlags(uint32_t timestamp) { |
181 frame_counter_++; | 188 frame_counter_++; |
182 return CurrentEncodeFlags(); | 189 return CurrentEncodeFlags(); |
183 } | 190 } |
184 | 191 |
185 int CurrentEncodeFlags() const { | 192 int CurrentEncodeFlags() const { |
186 assert(encode_flags_length_ > 0 && encode_flags_ != NULL); | 193 assert(encode_flags_length_ > 0 && encode_flags_ != NULL); |
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261 const int* encode_flags_; | 268 const int* encode_flags_; |
262 }; | 269 }; |
263 } // namespace | 270 } // namespace |
264 | 271 |
265 TemporalLayers* RealTimeTemporalLayersFactory::Create( | 272 TemporalLayers* RealTimeTemporalLayersFactory::Create( |
266 int max_temporal_layers, | 273 int max_temporal_layers, |
267 uint8_t initial_tl0_pic_idx) const { | 274 uint8_t initial_tl0_pic_idx) const { |
268 return new RealTimeTemporalLayers(max_temporal_layers, initial_tl0_pic_idx); | 275 return new RealTimeTemporalLayers(max_temporal_layers, initial_tl0_pic_idx); |
269 } | 276 } |
270 } // namespace webrtc | 277 } // namespace webrtc |
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