1 /*
2  * Copyright 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17 
18 #ifndef MEDIA_CODEC_CONSTANTS_H_
19 #define MEDIA_CODEC_CONSTANTS_H_
20 
21 namespace {
22 
23 // from MediaCodecInfo.java
24 constexpr int32_t AVCProfileBaseline = 0x01;
25 constexpr int32_t AVCProfileMain     = 0x02;
26 constexpr int32_t AVCProfileExtended = 0x04;
27 constexpr int32_t AVCProfileHigh     = 0x08;
28 constexpr int32_t AVCProfileHigh10   = 0x10;
29 constexpr int32_t AVCProfileHigh422  = 0x20;
30 constexpr int32_t AVCProfileHigh444  = 0x40;
31 constexpr int32_t AVCProfileConstrainedBaseline = 0x10000;
32 constexpr int32_t AVCProfileConstrainedHigh     = 0x80000;
33 
34 inline static const char *asString_AVCProfile(int32_t i, const char *def = "??") {
35     switch (i) {
36         case AVCProfileBaseline:            return "Baseline";
37         case AVCProfileMain:                return "Main";
38         case AVCProfileExtended:            return "Extended";
39         case AVCProfileHigh:                return "High";
40         case AVCProfileHigh10:              return "High10";
41         case AVCProfileHigh422:             return "High422";
42         case AVCProfileHigh444:             return "High444";
43         case AVCProfileConstrainedBaseline: return "ConstrainedBaseline";
44         case AVCProfileConstrainedHigh:     return "ConstrainedHigh";
45         default:                            return def;
46     }
47 }
48 
49 constexpr int32_t AVCLevel1       = 0x01;
50 constexpr int32_t AVCLevel1b      = 0x02;
51 constexpr int32_t AVCLevel11      = 0x04;
52 constexpr int32_t AVCLevel12      = 0x08;
53 constexpr int32_t AVCLevel13      = 0x10;
54 constexpr int32_t AVCLevel2       = 0x20;
55 constexpr int32_t AVCLevel21      = 0x40;
56 constexpr int32_t AVCLevel22      = 0x80;
57 constexpr int32_t AVCLevel3       = 0x100;
58 constexpr int32_t AVCLevel31      = 0x200;
59 constexpr int32_t AVCLevel32      = 0x400;
60 constexpr int32_t AVCLevel4       = 0x800;
61 constexpr int32_t AVCLevel41      = 0x1000;
62 constexpr int32_t AVCLevel42      = 0x2000;
63 constexpr int32_t AVCLevel5       = 0x4000;
64 constexpr int32_t AVCLevel51      = 0x8000;
65 constexpr int32_t AVCLevel52      = 0x10000;
66 constexpr int32_t AVCLevel6       = 0x20000;
67 constexpr int32_t AVCLevel61      = 0x40000;
68 constexpr int32_t AVCLevel62      = 0x80000;
69 
70 inline static const char *asString_AVCLevel(int32_t i, const char *def = "??") {
71     switch (i) {
72         case AVCLevel1:     return "1";
73         case AVCLevel1b:    return "1b";
74         case AVCLevel11:    return "1.1";
75         case AVCLevel12:    return "1.2";
76         case AVCLevel13:    return "1.3";
77         case AVCLevel2:     return "2";
78         case AVCLevel21:    return "2.1";
79         case AVCLevel22:    return "2.2";
80         case AVCLevel3:     return "3";
81         case AVCLevel31:    return "3.1";
82         case AVCLevel32:    return "3.2";
83         case AVCLevel4:     return "4";
84         case AVCLevel41:    return "4.1";
85         case AVCLevel42:    return "4.2";
86         case AVCLevel5:     return "5";
87         case AVCLevel51:    return "5.1";
88         case AVCLevel52:    return "5.2";
89         case AVCLevel6:     return "6";
90         case AVCLevel61:    return "6.1";
91         case AVCLevel62:    return "6.2";
92         default:            return def;
93     }
94 }
95 
96 constexpr int32_t H263ProfileBaseline             = 0x01;
97 constexpr int32_t H263ProfileH320Coding           = 0x02;
98 constexpr int32_t H263ProfileBackwardCompatible   = 0x04;
99 constexpr int32_t H263ProfileISWV2                = 0x08;
100 constexpr int32_t H263ProfileISWV3                = 0x10;
101 constexpr int32_t H263ProfileHighCompression      = 0x20;
102 constexpr int32_t H263ProfileInternet             = 0x40;
103 constexpr int32_t H263ProfileInterlace            = 0x80;
104 constexpr int32_t H263ProfileHighLatency          = 0x100;
105 
106 inline static const char *asString_H263Profile(int32_t i, const char *def = "??") {
107     switch (i) {
108         case H263ProfileBaseline:           return "Baseline";
109         case H263ProfileH320Coding:         return "H320Coding";
110         case H263ProfileBackwardCompatible: return "BackwardCompatible";
111         case H263ProfileISWV2:              return "ISWV2";
112         case H263ProfileISWV3:              return "ISWV3";
113         case H263ProfileHighCompression:    return "HighCompression";
114         case H263ProfileInternet:           return "Internet";
115         case H263ProfileInterlace:          return "Interlace";
116         case H263ProfileHighLatency:        return "HighLatency";
117         default:                            return def;
118     }
119 }
120 
121 constexpr int32_t H263Level10      = 0x01;
122 constexpr int32_t H263Level20      = 0x02;
123 constexpr int32_t H263Level30      = 0x04;
124 constexpr int32_t H263Level40      = 0x08;
125 constexpr int32_t H263Level45      = 0x10;
126 constexpr int32_t H263Level50      = 0x20;
127 constexpr int32_t H263Level60      = 0x40;
128 constexpr int32_t H263Level70      = 0x80;
129 
130 inline static const char *asString_H263Level(int32_t i, const char *def = "??") {
131     switch (i) {
132         case H263Level10:   return "10";
133         case H263Level20:   return "20";
134         case H263Level30:   return "30";
135         case H263Level40:   return "40";
136         case H263Level45:   return "45";
137         case H263Level50:   return "50";
138         case H263Level60:   return "60";
139         case H263Level70:   return "70";
140         default:            return def;
141     }
142 }
143 
144 constexpr int32_t MPEG4ProfileSimple              = 0x01;
145 constexpr int32_t MPEG4ProfileSimpleScalable      = 0x02;
146 constexpr int32_t MPEG4ProfileCore                = 0x04;
147 constexpr int32_t MPEG4ProfileMain                = 0x08;
148 constexpr int32_t MPEG4ProfileNbit                = 0x10;
149 constexpr int32_t MPEG4ProfileScalableTexture     = 0x20;
150 constexpr int32_t MPEG4ProfileSimpleFace          = 0x40;
151 constexpr int32_t MPEG4ProfileSimpleFBA           = 0x80;
152 constexpr int32_t MPEG4ProfileBasicAnimated       = 0x100;
153 constexpr int32_t MPEG4ProfileHybrid              = 0x200;
154 constexpr int32_t MPEG4ProfileAdvancedRealTime    = 0x400;
155 constexpr int32_t MPEG4ProfileCoreScalable        = 0x800;
156 constexpr int32_t MPEG4ProfileAdvancedCoding      = 0x1000;
157 constexpr int32_t MPEG4ProfileAdvancedCore        = 0x2000;
158 constexpr int32_t MPEG4ProfileAdvancedScalable    = 0x4000;
159 constexpr int32_t MPEG4ProfileAdvancedSimple      = 0x8000;
160 
161 inline static const char *asString_MPEG4Profile(int32_t i, const char *def = "??") {
162     switch (i) {
163         case MPEG4ProfileSimple:            return "Simple";
164         case MPEG4ProfileSimpleScalable:    return "SimpleScalable";
165         case MPEG4ProfileCore:              return "Core";
166         case MPEG4ProfileMain:              return "Main";
167         case MPEG4ProfileNbit:              return "Nbit";
168         case MPEG4ProfileScalableTexture:   return "ScalableTexture";
169         case MPEG4ProfileSimpleFace:        return "SimpleFace";
170         case MPEG4ProfileSimpleFBA:         return "SimpleFBA";
171         case MPEG4ProfileBasicAnimated:     return "BasicAnimated";
172         case MPEG4ProfileHybrid:            return "Hybrid";
173         case MPEG4ProfileAdvancedRealTime:  return "AdvancedRealTime";
174         case MPEG4ProfileCoreScalable:      return "CoreScalable";
175         case MPEG4ProfileAdvancedCoding:    return "AdvancedCoding";
176         case MPEG4ProfileAdvancedCore:      return "AdvancedCore";
177         case MPEG4ProfileAdvancedScalable:  return "AdvancedScalable";
178         case MPEG4ProfileAdvancedSimple:    return "AdvancedSimple";
179         default:                            return def;
180     }
181 }
182 
183 constexpr int32_t MPEG4Level0      = 0x01;
184 constexpr int32_t MPEG4Level0b     = 0x02;
185 constexpr int32_t MPEG4Level1      = 0x04;
186 constexpr int32_t MPEG4Level2      = 0x08;
187 constexpr int32_t MPEG4Level3      = 0x10;
188 constexpr int32_t MPEG4Level3b     = 0x18;
189 constexpr int32_t MPEG4Level4      = 0x20;
190 constexpr int32_t MPEG4Level4a     = 0x40;
191 constexpr int32_t MPEG4Level5      = 0x80;
192 constexpr int32_t MPEG4Level6      = 0x100;
193 
194 inline static const char *asString_MPEG4Level(int32_t i, const char *def = "??") {
195     switch (i) {
196         case MPEG4Level0:   return "0";
197         case MPEG4Level0b:  return "0b";
198         case MPEG4Level1:   return "1";
199         case MPEG4Level2:   return "2";
200         case MPEG4Level3:   return "3";
201         case MPEG4Level3b:  return "3b";
202         case MPEG4Level4:   return "4";
203         case MPEG4Level4a:  return "4a";
204         case MPEG4Level5:   return "5";
205         case MPEG4Level6:   return "6";
206         default:            return def;
207     }
208 }
209 
210 constexpr int32_t MPEG2ProfileSimple              = 0x00;
211 constexpr int32_t MPEG2ProfileMain                = 0x01;
212 constexpr int32_t MPEG2Profile422                 = 0x02;
213 constexpr int32_t MPEG2ProfileSNR                 = 0x03;
214 constexpr int32_t MPEG2ProfileSpatial             = 0x04;
215 constexpr int32_t MPEG2ProfileHigh                = 0x05;
216 
217 inline static const char *asString_MPEG2Profile(int32_t i, const char *def = "??") {
218     switch (i) {
219         case MPEG2ProfileSimple:    return "Simple";
220         case MPEG2ProfileMain:      return "Main";
221         case MPEG2Profile422:       return "422";
222         case MPEG2ProfileSNR:       return "SNR";
223         case MPEG2ProfileSpatial:   return "Spatial";
224         case MPEG2ProfileHigh:      return "High";
225         default:                    return def;
226     }
227 }
228 
229 constexpr int32_t MPEG2LevelLL     = 0x00;
230 constexpr int32_t MPEG2LevelML     = 0x01;
231 constexpr int32_t MPEG2LevelH14    = 0x02;
232 constexpr int32_t MPEG2LevelHL     = 0x03;
233 constexpr int32_t MPEG2LevelHP     = 0x04;
234 
235 inline static const char *asString_MPEG2Level(int32_t i, const char *def = "??") {
236     switch (i) {
237         case MPEG2LevelLL:  return "LL";
238         case MPEG2LevelML:  return "ML";
239         case MPEG2LevelH14: return "H14";
240         case MPEG2LevelHL:  return "HL";
241         case MPEG2LevelHP:  return "HP";
242         default:            return def;
243     }
244 }
245 
246 constexpr int32_t AACObjectMain       = 1;
247 constexpr int32_t AACObjectLC         = 2;
248 constexpr int32_t AACObjectSSR        = 3;
249 constexpr int32_t AACObjectLTP        = 4;
250 constexpr int32_t AACObjectHE         = 5;
251 constexpr int32_t AACObjectScalable   = 6;
252 constexpr int32_t AACObjectERLC       = 17;
253 constexpr int32_t AACObjectERScalable = 20;
254 constexpr int32_t AACObjectLD         = 23;
255 constexpr int32_t AACObjectHE_PS      = 29;
256 constexpr int32_t AACObjectELD        = 39;
257 constexpr int32_t AACObjectXHE        = 42;
258 
259 inline static const char *asString_AACObject(int32_t i, const char *def = "??") {
260     switch (i) {
261         case AACObjectMain:         return "Main";
262         case AACObjectLC:           return "LC";
263         case AACObjectSSR:          return "SSR";
264         case AACObjectLTP:          return "LTP";
265         case AACObjectHE:           return "HE";
266         case AACObjectScalable:     return "Scalable";
267         case AACObjectERLC:         return "ERLC";
268         case AACObjectERScalable:   return "ERScalable";
269         case AACObjectLD:           return "LD";
270         case AACObjectHE_PS:        return "HE_PS";
271         case AACObjectELD:          return "ELD";
272         case AACObjectXHE:          return "XHE";
273         default:                    return def;
274     }
275 }
276 
277 constexpr int32_t VP8Level_Version0 = 0x01;
278 constexpr int32_t VP8Level_Version1 = 0x02;
279 constexpr int32_t VP8Level_Version2 = 0x04;
280 constexpr int32_t VP8Level_Version3 = 0x08;
281 
282 inline static const char *asString_VP8Level(int32_t i, const char *def = "??") {
283     switch (i) {
284         case VP8Level_Version0: return "V0";
285         case VP8Level_Version1: return "V1";
286         case VP8Level_Version2: return "V2";
287         case VP8Level_Version3: return "V3";
288         default:                return def;
289     }
290 }
291 
292 constexpr int32_t VP8ProfileMain = 0x01;
293 
294 inline static const char *asString_VP8Profile(int32_t i, const char *def = "??") {
295     switch (i) {
296         case VP8ProfileMain:    return "Main";
297         default:                return def;
298     }
299 }
300 
301 constexpr int32_t VP9Profile0 = 0x01;
302 constexpr int32_t VP9Profile1 = 0x02;
303 constexpr int32_t VP9Profile2 = 0x04;
304 constexpr int32_t VP9Profile3 = 0x08;
305 constexpr int32_t VP9Profile2HDR = 0x1000;
306 constexpr int32_t VP9Profile3HDR = 0x2000;
307 constexpr int32_t VP9Profile2HDR10Plus = 0x4000;
308 constexpr int32_t VP9Profile3HDR10Plus = 0x8000;
309 
310 inline static const char *asString_VP9Profile(int32_t i, const char *def = "??") {
311     switch (i) {
312         case VP9Profile0:           return "0";
313         case VP9Profile1:           return "1";
314         case VP9Profile2:           return "2";
315         case VP9Profile3:           return "3";
316         case VP9Profile2HDR:        return "2HDR";
317         case VP9Profile3HDR:        return "3HDR";
318         case VP9Profile2HDR10Plus:  return "2HDRPlus";
319         case VP9Profile3HDR10Plus:  return "3HDRPlus";
320         default:                    return def;
321     }
322 }
323 
324 constexpr int32_t VP9Level1  = 0x1;
325 constexpr int32_t VP9Level11 = 0x2;
326 constexpr int32_t VP9Level2  = 0x4;
327 constexpr int32_t VP9Level21 = 0x8;
328 constexpr int32_t VP9Level3  = 0x10;
329 constexpr int32_t VP9Level31 = 0x20;
330 constexpr int32_t VP9Level4  = 0x40;
331 constexpr int32_t VP9Level41 = 0x80;
332 constexpr int32_t VP9Level5  = 0x100;
333 constexpr int32_t VP9Level51 = 0x200;
334 constexpr int32_t VP9Level52 = 0x400;
335 constexpr int32_t VP9Level6  = 0x800;
336 constexpr int32_t VP9Level61 = 0x1000;
337 constexpr int32_t VP9Level62 = 0x2000;
338 
339 inline static const char *asString_VP9Level(int32_t i, const char *def = "??") {
340     switch (i) {
341         case VP9Level1:     return "1";
342         case VP9Level11:    return "1.1";
343         case VP9Level2:     return "2";
344         case VP9Level21:    return "2.1";
345         case VP9Level3:     return "3";
346         case VP9Level31:    return "3.1";
347         case VP9Level4:     return "4";
348         case VP9Level41:    return "4.1";
349         case VP9Level5:     return "5";
350         case VP9Level51:    return "5.1";
351         case VP9Level52:    return "5.2";
352         case VP9Level6:     return "6";
353         case VP9Level61:    return "6.1";
354         case VP9Level62:    return "6.2";
355         default:            return def;
356     }
357 }
358 
359 constexpr int32_t AV1ProfileMain8 = 0x1;
360 constexpr int32_t AV1ProfileMain10 = 0x2;
361 constexpr int32_t AV1ProfileMain10HDR10 = 0x1000;
362 constexpr int32_t AV1ProfileMain10HDR10Plus = 0x2000;
363 
364 inline static const char *asString_AV1Profile(int32_t i, const char *def = "??") {
365     switch (i) {
366         case AV1ProfileMain8:           return "Main8";
367         case AV1ProfileMain10:          return "Main10HDR";
368         case AV1ProfileMain10HDR10:     return "Main10HDR10";
369         case AV1ProfileMain10HDR10Plus: return "Main10HDRPlus";
370         default:                        return def;
371     }
372 }
373 
374 constexpr int32_t AV1Level2  = 0x1;
375 constexpr int32_t AV1Level21 = 0x2;
376 constexpr int32_t AV1Level22 = 0x4;
377 constexpr int32_t AV1Level23 = 0x8;
378 constexpr int32_t AV1Level3  = 0x10;
379 constexpr int32_t AV1Level31 = 0x20;
380 constexpr int32_t AV1Level32 = 0x40;
381 constexpr int32_t AV1Level33 = 0x80;
382 constexpr int32_t AV1Level4  = 0x100;
383 constexpr int32_t AV1Level41 = 0x200;
384 constexpr int32_t AV1Level42 = 0x400;
385 constexpr int32_t AV1Level43 = 0x800;
386 constexpr int32_t AV1Level5  = 0x1000;
387 constexpr int32_t AV1Level51 = 0x2000;
388 constexpr int32_t AV1Level52 = 0x4000;
389 constexpr int32_t AV1Level53 = 0x8000;
390 constexpr int32_t AV1Level6  = 0x10000;
391 constexpr int32_t AV1Level61 = 0x20000;
392 constexpr int32_t AV1Level62 = 0x40000;
393 constexpr int32_t AV1Level63 = 0x80000;
394 constexpr int32_t AV1Level7  = 0x100000;
395 constexpr int32_t AV1Level71 = 0x200000;
396 constexpr int32_t AV1Level72 = 0x400000;
397 constexpr int32_t AV1Level73 = 0x800000;
398 
399 inline static const char *asString_AV1Level(int32_t i, const char *def = "??") {
400     switch (i) {
401         case AV1Level2:     return "2";
402         case AV1Level21:    return "2.1";
403         case AV1Level22:    return "2.2";
404         case AV1Level23:    return "2.3";
405         case AV1Level3:     return "3";
406         case AV1Level31:    return "3.1";
407         case AV1Level32:    return "3.2";
408         case AV1Level33:    return "3.3";
409         case AV1Level4:     return "4";
410         case AV1Level41:    return "4.1";
411         case AV1Level42:    return "4.2";
412         case AV1Level43:    return "4.3";
413         case AV1Level5:     return "5";
414         case AV1Level51:    return "5.1";
415         case AV1Level52:    return "5.2";
416         case AV1Level53:    return "5.3";
417         case AV1Level6:     return "6";
418         case AV1Level61:    return "6.1";
419         case AV1Level62:    return "6.2";
420         case AV1Level63:    return "6.3";
421         case AV1Level7:     return "7";
422         case AV1Level71:    return "7.1";
423         case AV1Level72:    return "7.2";
424         case AV1Level73:    return "7.3";
425         default:            return def;
426     }
427 }
428 
429 constexpr int32_t HEVCProfileMain        = 0x01;
430 constexpr int32_t HEVCProfileMain10      = 0x02;
431 constexpr int32_t HEVCProfileMainStill   = 0x04;
432 constexpr int32_t HEVCProfileMain10HDR10 = 0x1000;
433 constexpr int32_t HEVCProfileMain10HDR10Plus = 0x2000;
434 
435 inline static const char *asString_HEVCProfile(int32_t i, const char *def = "??") {
436     switch (i) {
437         case HEVCProfileMain:               return "Main";
438         case HEVCProfileMain10:             return "Main10";
439         case HEVCProfileMainStill:          return "MainStill";
440         case HEVCProfileMain10HDR10:        return "Main10HDR10";
441         case HEVCProfileMain10HDR10Plus:    return "Main10HDR10Plus";
442         default:                            return def;
443     }
444 }
445 
446 constexpr int32_t HEVCMainTierLevel1  = 0x1;
447 constexpr int32_t HEVCHighTierLevel1  = 0x2;
448 constexpr int32_t HEVCMainTierLevel2  = 0x4;
449 constexpr int32_t HEVCHighTierLevel2  = 0x8;
450 constexpr int32_t HEVCMainTierLevel21 = 0x10;
451 constexpr int32_t HEVCHighTierLevel21 = 0x20;
452 constexpr int32_t HEVCMainTierLevel3  = 0x40;
453 constexpr int32_t HEVCHighTierLevel3  = 0x80;
454 constexpr int32_t HEVCMainTierLevel31 = 0x100;
455 constexpr int32_t HEVCHighTierLevel31 = 0x200;
456 constexpr int32_t HEVCMainTierLevel4  = 0x400;
457 constexpr int32_t HEVCHighTierLevel4  = 0x800;
458 constexpr int32_t HEVCMainTierLevel41 = 0x1000;
459 constexpr int32_t HEVCHighTierLevel41 = 0x2000;
460 constexpr int32_t HEVCMainTierLevel5  = 0x4000;
461 constexpr int32_t HEVCHighTierLevel5  = 0x8000;
462 constexpr int32_t HEVCMainTierLevel51 = 0x10000;
463 constexpr int32_t HEVCHighTierLevel51 = 0x20000;
464 constexpr int32_t HEVCMainTierLevel52 = 0x40000;
465 constexpr int32_t HEVCHighTierLevel52 = 0x80000;
466 constexpr int32_t HEVCMainTierLevel6  = 0x100000;
467 constexpr int32_t HEVCHighTierLevel6  = 0x200000;
468 constexpr int32_t HEVCMainTierLevel61 = 0x400000;
469 constexpr int32_t HEVCHighTierLevel61 = 0x800000;
470 constexpr int32_t HEVCMainTierLevel62 = 0x1000000;
471 constexpr int32_t HEVCHighTierLevel62 = 0x2000000;
472 
473 inline static const char *asString_HEVCTierLevel(int32_t i, const char *def = "??") {
474     switch (i) {
475         case HEVCMainTierLevel1:    return "Main 1";
476         case HEVCHighTierLevel1:    return "High 1";
477         case HEVCMainTierLevel2:    return "Main 2";
478         case HEVCHighTierLevel2:    return "High 2";
479         case HEVCMainTierLevel21:   return "Main 2.1";
480         case HEVCHighTierLevel21:   return "High 2.1";
481         case HEVCMainTierLevel3:    return "Main 3";
482         case HEVCHighTierLevel3:    return "High 3";
483         case HEVCMainTierLevel31:   return "Main 3.1";
484         case HEVCHighTierLevel31:   return "High 3.1";
485         case HEVCMainTierLevel4:    return "Main 4";
486         case HEVCHighTierLevel4:    return "High 4";
487         case HEVCMainTierLevel41:   return "Main 4.1";
488         case HEVCHighTierLevel41:   return "High 4.1";
489         case HEVCMainTierLevel5:    return "Main 5";
490         case HEVCHighTierLevel5:    return "High 5";
491         case HEVCMainTierLevel51:   return "Main 5.1";
492         case HEVCHighTierLevel51:   return "High 5.1";
493         case HEVCMainTierLevel52:   return "Main 5.2";
494         case HEVCHighTierLevel52:   return "High 5.2";
495         case HEVCMainTierLevel6:    return "Main 6";
496         case HEVCHighTierLevel6:    return "High 6";
497         case HEVCMainTierLevel61:   return "Main 6.1";
498         case HEVCHighTierLevel61:   return "High 6.1";
499         case HEVCMainTierLevel62:   return "Main 6.2";
500         case HEVCHighTierLevel62:   return "High 6.2";
501         default:                    return def;
502     }
503 }
504 
505 constexpr int32_t DolbyVisionProfileDvavPer = 0x1;
506 constexpr int32_t DolbyVisionProfileDvavPen = 0x2;
507 constexpr int32_t DolbyVisionProfileDvheDer = 0x4;
508 constexpr int32_t DolbyVisionProfileDvheDen = 0x8;
509 constexpr int32_t DolbyVisionProfileDvheDtr = 0x10;
510 constexpr int32_t DolbyVisionProfileDvheStn = 0x20;
511 constexpr int32_t DolbyVisionProfileDvheDth = 0x40;
512 constexpr int32_t DolbyVisionProfileDvheDtb = 0x80;
513 constexpr int32_t DolbyVisionProfileDvheSt = 0x100;
514 constexpr int32_t DolbyVisionProfileDvavSe = 0x200;
515 
516 inline static const char *asString_DolbyVisionProfile(int32_t i, const char *def = "??") {
517     switch (i) {
518         case DolbyVisionProfileDvavPer: return "DvavPer";
519         case DolbyVisionProfileDvavPen: return "DvavPen";
520         case DolbyVisionProfileDvheDer: return "DvheDer";
521         case DolbyVisionProfileDvheDen: return "DvheDen";
522         case DolbyVisionProfileDvheDtr: return "DvheDtr";
523         case DolbyVisionProfileDvheStn: return "DvheStn";
524         case DolbyVisionProfileDvheDth: return "DvheDth";
525         case DolbyVisionProfileDvheDtb: return "DvheDtb";
526         case DolbyVisionProfileDvheSt:  return "DvheSt";
527         case DolbyVisionProfileDvavSe:  return "DvavSe";
528         default:                        return def;
529     }
530 }
531 
532 constexpr int32_t DolbyVisionLevelHd24    = 0x1;
533 constexpr int32_t DolbyVisionLevelHd30    = 0x2;
534 constexpr int32_t DolbyVisionLevelFhd24   = 0x4;
535 constexpr int32_t DolbyVisionLevelFhd30   = 0x8;
536 constexpr int32_t DolbyVisionLevelFhd60   = 0x10;
537 constexpr int32_t DolbyVisionLevelUhd24   = 0x20;
538 constexpr int32_t DolbyVisionLevelUhd30   = 0x40;
539 constexpr int32_t DolbyVisionLevelUhd48   = 0x80;
540 constexpr int32_t DolbyVisionLevelUhd60   = 0x100;
541 
542 inline static const char *asString_DolbyVisionLevel(int32_t i, const char *def = "??") {
543     switch (i) {
544         case DolbyVisionLevelHd24:  return "Hd24";
545         case DolbyVisionLevelHd30:  return "Hd30";
546         case DolbyVisionLevelFhd24: return "Fhd24";
547         case DolbyVisionLevelFhd30: return "Fhd30";
548         case DolbyVisionLevelFhd60: return "Fhd60";
549         case DolbyVisionLevelUhd24: return "Uhd24";
550         case DolbyVisionLevelUhd30: return "Uhd30";
551         case DolbyVisionLevelUhd48: return "Uhd48";
552         case DolbyVisionLevelUhd60: return "Uhd60";
553         default:                    return def;
554     }
555 }
556 
557 constexpr int32_t BITRATE_MODE_CBR = 2;
558 constexpr int32_t BITRATE_MODE_CQ = 0;
559 constexpr int32_t BITRATE_MODE_VBR = 1;
560 
561 inline static const char *asString_BitrateMode(int32_t i, const char *def = "??") {
562     switch (i) {
563         case BITRATE_MODE_CBR:  return "CBR";
564         case BITRATE_MODE_CQ:   return "CQ";
565         case BITRATE_MODE_VBR:  return "VBR";
566         default:                return def;
567     }
568 }
569 
570 constexpr int32_t COLOR_Format12bitRGB444             = 3;
571 constexpr int32_t COLOR_Format16bitARGB1555           = 5;
572 constexpr int32_t COLOR_Format16bitARGB4444           = 4;
573 constexpr int32_t COLOR_Format16bitBGR565             = 7;
574 constexpr int32_t COLOR_Format16bitRGB565             = 6;
575 constexpr int32_t COLOR_Format18bitARGB1665           = 9;
576 constexpr int32_t COLOR_Format18BitBGR666             = 41;
577 constexpr int32_t COLOR_Format18bitRGB666             = 8;
578 constexpr int32_t COLOR_Format19bitARGB1666           = 10;
579 constexpr int32_t COLOR_Format24BitABGR6666           = 43;
580 constexpr int32_t COLOR_Format24bitARGB1887           = 13;
581 constexpr int32_t COLOR_Format24BitARGB6666           = 42;
582 constexpr int32_t COLOR_Format24bitBGR888             = 12;
583 constexpr int32_t COLOR_Format24bitRGB888             = 11;
584 constexpr int32_t COLOR_Format25bitARGB1888           = 14;
585 constexpr int32_t COLOR_Format32bitABGR8888           = 0x7F00A000;
586 constexpr int32_t COLOR_Format32bitARGB8888           = 16;
587 constexpr int32_t COLOR_Format32bitBGRA8888           = 15;
588 constexpr int32_t COLOR_Format8bitRGB332              = 2;
589 constexpr int32_t COLOR_FormatCbYCrY                  = 27;
590 constexpr int32_t COLOR_FormatCrYCbY                  = 28;
591 constexpr int32_t COLOR_FormatL16                     = 36;
592 constexpr int32_t COLOR_FormatL2                      = 33;
593 constexpr int32_t COLOR_FormatL24                     = 37;
594 constexpr int32_t COLOR_FormatL32                     = 38;
595 constexpr int32_t COLOR_FormatL4                      = 34;
596 constexpr int32_t COLOR_FormatL8                      = 35;
597 constexpr int32_t COLOR_FormatMonochrome              = 1;
598 constexpr int32_t COLOR_FormatRawBayer10bit           = 31;
599 constexpr int32_t COLOR_FormatRawBayer8bit            = 30;
600 constexpr int32_t COLOR_FormatRawBayer8bitcompressed  = 32;
601 constexpr int32_t COLOR_FormatRGBAFlexible            = 0x7F36A888;
602 constexpr int32_t COLOR_FormatRGBFlexible             = 0x7F36B888;
603 constexpr int32_t COLOR_FormatSurface                 = 0x7F000789;
604 constexpr int32_t COLOR_FormatYCbYCr                  = 25;
605 constexpr int32_t COLOR_FormatYCrYCb                  = 26;
606 constexpr int32_t COLOR_FormatYUV411PackedPlanar      = 18;
607 constexpr int32_t COLOR_FormatYUV411Planar            = 17;
608 constexpr int32_t COLOR_FormatYUV420Flexible          = 0x7F420888;
609 constexpr int32_t COLOR_FormatYUV420PackedPlanar      = 20;
610 constexpr int32_t COLOR_FormatYUV420PackedSemiPlanar  = 39;
611 constexpr int32_t COLOR_FormatYUV420Planar            = 19;
612 constexpr int32_t COLOR_FormatYUV420SemiPlanar        = 21;
613 constexpr int32_t COLOR_FormatYUV422Flexible          = 0x7F422888;
614 constexpr int32_t COLOR_FormatYUV422PackedPlanar      = 23;
615 constexpr int32_t COLOR_FormatYUV422PackedSemiPlanar  = 40;
616 constexpr int32_t COLOR_FormatYUV422Planar            = 22;
617 constexpr int32_t COLOR_FormatYUV422SemiPlanar        = 24;
618 constexpr int32_t COLOR_FormatYUV444Flexible          = 0x7F444888;
619 constexpr int32_t COLOR_FormatYUV444Interleaved       = 29;
620 constexpr int32_t COLOR_QCOM_FormatYUV420SemiPlanar   = 0x7fa30c00;
621 constexpr int32_t COLOR_TI_FormatYUV420PackedSemiPlanar = 0x7f000100;
622 
623 inline static const char *asString_ColorFormat(int32_t i, const char *def = "??") {
624     switch (i) {
625         case COLOR_Format12bitRGB444:               return "12bitRGB444";
626         case COLOR_Format16bitARGB1555:             return "16bitARGB1555";
627         case COLOR_Format16bitARGB4444:             return "16bitARGB4444";
628         case COLOR_Format16bitBGR565:               return "16bitBGR565";
629         case COLOR_Format16bitRGB565:               return "16bitRGB565";
630         case COLOR_Format18bitARGB1665:             return "18bitARGB1665";
631         case COLOR_Format18BitBGR666:               return "18BitBGR666";
632         case COLOR_Format18bitRGB666:               return "18bitRGB666";
633         case COLOR_Format19bitARGB1666:             return "19bitARGB1666";
634         case COLOR_Format24BitABGR6666:             return "24BitABGR6666";
635         case COLOR_Format24bitARGB1887:             return "24bitARGB1887";
636         case COLOR_Format24BitARGB6666:             return "24BitARGB6666";
637         case COLOR_Format24bitBGR888:               return "24bitBGR888";
638         case COLOR_Format24bitRGB888:               return "24bitRGB888";
639         case COLOR_Format25bitARGB1888:             return "25bitARGB1888";
640         case COLOR_Format32bitABGR8888:             return "32bitABGR8888";
641         case COLOR_Format32bitARGB8888:             return "32bitARGB8888";
642         case COLOR_Format32bitBGRA8888:             return "32bitBGRA8888";
643         case COLOR_Format8bitRGB332:                return "8bitRGB332";
644         case COLOR_FormatCbYCrY:                    return "CbYCrY";
645         case COLOR_FormatCrYCbY:                    return "CrYCbY";
646         case COLOR_FormatL16:                       return "L16";
647         case COLOR_FormatL2:                        return "L2";
648         case COLOR_FormatL24:                       return "L24";
649         case COLOR_FormatL32:                       return "L32";
650         case COLOR_FormatL4:                        return "L4";
651         case COLOR_FormatL8:                        return "L8";
652         case COLOR_FormatMonochrome:                return "Monochrome";
653         case COLOR_FormatRawBayer10bit:             return "RawBayer10bit";
654         case COLOR_FormatRawBayer8bit:              return "RawBayer8bit";
655         case COLOR_FormatRawBayer8bitcompressed:    return "RawBayer8bitcompressed";
656         case COLOR_FormatRGBAFlexible:              return "RGBAFlexible";
657         case COLOR_FormatRGBFlexible:               return "RGBFlexible";
658         case COLOR_FormatSurface:                   return "Surface";
659         case COLOR_FormatYCbYCr:                    return "YCbYCr";
660         case COLOR_FormatYCrYCb:                    return "YCrYCb";
661         case COLOR_FormatYUV411PackedPlanar:        return "YUV411PackedPlanar";
662         case COLOR_FormatYUV411Planar:              return "YUV411Planar";
663         case COLOR_FormatYUV420Flexible:            return "YUV420Flexible";
664         case COLOR_FormatYUV420PackedPlanar:        return "YUV420PackedPlanar";
665         case COLOR_FormatYUV420PackedSemiPlanar:    return "YUV420PackedSemiPlanar";
666         case COLOR_FormatYUV420Planar:              return "YUV420Planar";
667         case COLOR_FormatYUV420SemiPlanar:          return "YUV420SemiPlanar";
668         case COLOR_FormatYUV422Flexible:            return "YUV422Flexible";
669         case COLOR_FormatYUV422PackedPlanar:        return "YUV422PackedPlanar";
670         case COLOR_FormatYUV422PackedSemiPlanar:    return "YUV422PackedSemiPlanar";
671         case COLOR_FormatYUV422Planar:              return "YUV422Planar";
672         case COLOR_FormatYUV422SemiPlanar:          return "YUV422SemiPlanar";
673         case COLOR_FormatYUV444Flexible:            return "YUV444Flexible";
674         case COLOR_FormatYUV444Interleaved:         return "YUV444Interleaved";
675         case COLOR_QCOM_FormatYUV420SemiPlanar:     return "QCOM_YUV420SemiPlanar";
676         case COLOR_TI_FormatYUV420PackedSemiPlanar: return "TI_YUV420PackedSemiPlanar";
677         default:                                    return def;
678     }
679 }
680 
681 constexpr char FEATURE_AdaptivePlayback[]       = "adaptive-playback";
682 constexpr char FEATURE_IntraRefresh[] = "intra-refresh";
683 constexpr char FEATURE_PartialFrame[] = "partial-frame";
684 constexpr char FEATURE_SecurePlayback[]         = "secure-playback";
685 constexpr char FEATURE_TunneledPlayback[]       = "tunneled-playback";
686 
687 // from MediaFormat.java
688 constexpr char MIMETYPE_VIDEO_VP8[] = "video/x-vnd.on2.vp8";
689 constexpr char MIMETYPE_VIDEO_VP9[] = "video/x-vnd.on2.vp9";
690 constexpr char MIMETYPE_VIDEO_AV1[] = "video/av01";
691 constexpr char MIMETYPE_VIDEO_AVC[] = "video/avc";
692 constexpr char MIMETYPE_VIDEO_HEVC[] = "video/hevc";
693 constexpr char MIMETYPE_VIDEO_MPEG4[] = "video/mp4v-es";
694 constexpr char MIMETYPE_VIDEO_H263[] = "video/3gpp";
695 constexpr char MIMETYPE_VIDEO_MPEG2[] = "video/mpeg2";
696 constexpr char MIMETYPE_VIDEO_RAW[] = "video/raw";
697 constexpr char MIMETYPE_VIDEO_DOLBY_VISION[] = "video/dolby-vision";
698 constexpr char MIMETYPE_VIDEO_SCRAMBLED[] = "video/scrambled";
699 
700 constexpr char MIMETYPE_AUDIO_AMR_NB[] = "audio/3gpp";
701 constexpr char MIMETYPE_AUDIO_AMR_WB[] = "audio/amr-wb";
702 constexpr char MIMETYPE_AUDIO_MPEG[] = "audio/mpeg";
703 constexpr char MIMETYPE_AUDIO_AAC[] = "audio/mp4a-latm";
704 constexpr char MIMETYPE_AUDIO_QCELP[] = "audio/qcelp";
705 constexpr char MIMETYPE_AUDIO_VORBIS[] = "audio/vorbis";
706 constexpr char MIMETYPE_AUDIO_OPUS[] = "audio/opus";
707 constexpr char MIMETYPE_AUDIO_G711_ALAW[] = "audio/g711-alaw";
708 constexpr char MIMETYPE_AUDIO_G711_MLAW[] = "audio/g711-mlaw";
709 constexpr char MIMETYPE_AUDIO_RAW[] = "audio/raw";
710 constexpr char MIMETYPE_AUDIO_FLAC[] = "audio/flac";
711 constexpr char MIMETYPE_AUDIO_MSGSM[] = "audio/gsm";
712 constexpr char MIMETYPE_AUDIO_AC3[] = "audio/ac3";
713 constexpr char MIMETYPE_AUDIO_EAC3[] = "audio/eac3";
714 constexpr char MIMETYPE_AUDIO_SCRAMBLED[] = "audio/scrambled";
715 
716 constexpr char MIMETYPE_IMAGE_ANDROID_HEIC[] = "image/vnd.android.heic";
717 
718 constexpr char MIMETYPE_TEXT_CEA_608[] = "text/cea-608";
719 constexpr char MIMETYPE_TEXT_CEA_708[] = "text/cea-708";
720 constexpr char MIMETYPE_TEXT_SUBRIP[] = "application/x-subrip";
721 constexpr char MIMETYPE_TEXT_VTT[] = "text/vtt";
722 
723 constexpr int32_t COLOR_RANGE_FULL = 1;
724 constexpr int32_t COLOR_RANGE_LIMITED = 2;
725 constexpr int32_t COLOR_STANDARD_BT2020 = 6;
726 constexpr int32_t COLOR_STANDARD_BT601_NTSC = 4;
727 constexpr int32_t COLOR_STANDARD_BT601_PAL = 2;
728 constexpr int32_t COLOR_STANDARD_BT709 = 1;
729 constexpr int32_t COLOR_TRANSFER_HLG = 7;
730 constexpr int32_t COLOR_TRANSFER_LINEAR = 1;
731 constexpr int32_t COLOR_TRANSFER_SDR_VIDEO = 3;
732 constexpr int32_t COLOR_TRANSFER_ST2084 = 6;
733 
734 constexpr char KEY_AAC_DRC_ATTENUATION_FACTOR[] = "aac-drc-cut-level";
735 constexpr char KEY_AAC_DRC_BOOST_FACTOR[] = "aac-drc-boost-level";
736 constexpr char KEY_AAC_DRC_EFFECT_TYPE[] = "aac-drc-effect-type";
737 constexpr char KEY_AAC_DRC_HEAVY_COMPRESSION[] = "aac-drc-heavy-compression";
738 constexpr char KEY_AAC_DRC_TARGET_REFERENCE_LEVEL[] = "aac-target-ref-level";
739 constexpr char KEY_AAC_ENCODED_TARGET_LEVEL[] = "aac-encoded-target-level";
740 constexpr char KEY_AAC_MAX_OUTPUT_CHANNEL_COUNT[] = "aac-max-output-channel_count";
741 constexpr char KEY_AAC_PROFILE[] = "aac-profile";
742 constexpr char KEY_AAC_SBR_MODE[] = "aac-sbr-mode";
743 constexpr char KEY_AUDIO_SESSION_ID[] = "audio-session-id";
744 constexpr char KEY_BIT_RATE[] = "bitrate";
745 constexpr char KEY_BITRATE_MODE[] = "bitrate-mode";
746 constexpr char KEY_CA_SESSION_ID[] = "ca-session-id";
747 constexpr char KEY_CA_SYSTEM_ID[] = "ca-system-id";
748 constexpr char KEY_CA_PRIVATE_DATA[] = "ca-private-data";
749 constexpr char KEY_CAPTURE_RATE[] = "capture-rate";
750 constexpr char KEY_CHANNEL_COUNT[] = "channel-count";
751 constexpr char KEY_CHANNEL_MASK[] = "channel-mask";
752 constexpr char KEY_COLOR_FORMAT[] = "color-format";
753 constexpr char KEY_COLOR_RANGE[] = "color-range";
754 constexpr char KEY_COLOR_STANDARD[] = "color-standard";
755 constexpr char KEY_COLOR_TRANSFER[] = "color-transfer";
756 constexpr char KEY_COMPLEXITY[] = "complexity";
757 constexpr char KEY_CREATE_INPUT_SURFACE_SUSPENDED[] = "create-input-buffers-suspended";
758 constexpr char KEY_DURATION[] = "durationUs";
759 constexpr char KEY_FEATURE_[] = "feature-";
760 constexpr char KEY_FLAC_COMPRESSION_LEVEL[] = "flac-compression-level";
761 constexpr char KEY_FRAME_RATE[] = "frame-rate";
762 constexpr char KEY_GRID_COLUMNS[] = "grid-cols";
763 constexpr char KEY_GRID_ROWS[] = "grid-rows";
764 constexpr char KEY_HDR_STATIC_INFO[] = "hdr-static-info";
765 constexpr char KEY_HDR10_PLUS_INFO[] = "hdr10-plus-info";
766 constexpr char KEY_HEIGHT[] = "height";
767 constexpr char KEY_I_FRAME_INTERVAL[] = "i-frame-interval";
768 constexpr char KEY_INTRA_REFRESH_PERIOD[] = "intra-refresh-period";
769 constexpr char KEY_IS_ADTS[] = "is-adts";
770 constexpr char KEY_IS_AUTOSELECT[] = "is-autoselect";
771 constexpr char KEY_IS_DEFAULT[] = "is-default";
772 constexpr char KEY_IS_FORCED_SUBTITLE[] = "is-forced-subtitle";
773 constexpr char KEY_IS_TIMED_TEXT[] = "is-timed-text";
774 constexpr char KEY_LANGUAGE[] = "language";
775 constexpr char KEY_LATENCY[] = "latency";
776 constexpr char KEY_LEVEL[] = "level";
777 constexpr char KEY_MAX_B_FRAMES[] = "max-bframes";
778 constexpr char KEY_MAX_BIT_RATE[] = "max-bitrate";
779 constexpr char KEY_MAX_FPS_TO_ENCODER[] = "max-fps-to-encoder";
780 constexpr char KEY_MAX_HEIGHT[] = "max-height";
781 constexpr char KEY_MAX_INPUT_SIZE[] = "max-input-size";
782 constexpr char KEY_MAX_PTS_GAP_TO_ENCODER[] = "max-pts-gap-to-encoder";
783 constexpr char KEY_MAX_WIDTH[] = "max-width";
784 constexpr char KEY_MIME[] = "mime";
785 constexpr char KEY_OPERATING_RATE[] = "operating-rate";
786 constexpr char KEY_OUTPUT_REORDER_DEPTH[] = "output-reorder-depth";
787 constexpr char KEY_PCM_ENCODING[] = "pcm-encoding";
788 constexpr char KEY_PREPEND_HEADERS_TO_SYNC_FRAMES[] = "prepend-sps-pps-to-idr-frames";
789 constexpr char KEY_PRIORITY[] = "priority";
790 constexpr char KEY_PROFILE[] = "profile";
791 constexpr char KEY_PUSH_BLANK_BUFFERS_ON_STOP[] = "push-blank-buffers-on-shutdown";
792 constexpr char KEY_QUALITY[] = "quality";
793 constexpr char KEY_REPEAT_PREVIOUS_FRAME_AFTER[] = "repeat-previous-frame-after";
794 constexpr char KEY_ROTATION[] = "rotation-degrees";
795 constexpr char KEY_SAMPLE_RATE[] = "sample-rate";
796 constexpr char KEY_SLICE_HEIGHT[] = "slice-height";
797 constexpr char KEY_STRIDE[] = "stride";
798 constexpr char KEY_TEMPORAL_LAYERING[] = "ts-schema";
799 constexpr char KEY_TILE_HEIGHT[] = "tile-height";
800 constexpr char KEY_TILE_WIDTH[] = "tile-width";
801 constexpr char KEY_TRACK_ID[] = "track-id";
802 constexpr char KEY_WIDTH[] = "width";
803 
804 // from MediaCodec.java
805 constexpr int32_t ERROR_INSUFFICIENT_OUTPUT_PROTECTION = 4;
806 constexpr int32_t ERROR_INSUFFICIENT_RESOURCE = 1100;
807 constexpr int32_t ERROR_KEY_EXPIRED = 2;
808 constexpr int32_t ERROR_NO_KEY = 1;
809 constexpr int32_t ERROR_RECLAIMED = 1101;
810 constexpr int32_t ERROR_RESOURCE_BUSY = 3;
811 constexpr int32_t ERROR_SESSION_NOT_OPENED = 5;
812 constexpr int32_t ERROR_UNSUPPORTED_OPERATION = 6;
813 constexpr char CODEC[] = "android.media.mediacodec.codec";
814 constexpr char ENCODER[] = "android.media.mediacodec.encoder";
815 constexpr char HEIGHT[] = "android.media.mediacodec.height";
816 constexpr char MIME_TYPE[] = "android.media.mediacodec.mime";
817 constexpr char MODE[] = "android.media.mediacodec.mode";
818 constexpr char MODE_AUDIO[] = "audio";
819 constexpr char MODE_VIDEO[] = "video";
820 constexpr char ROTATION[] = "android.media.mediacodec.rotation";
821 constexpr char SECURE[] = "android.media.mediacodec.secure";
822 constexpr char WIDTH[] = "android.media.mediacodec.width";
823 
824 constexpr int32_t BUFFER_FLAG_CODEC_CONFIG = 2;
825 constexpr int32_t BUFFER_FLAG_END_OF_STREAM = 4;
826 constexpr int32_t BUFFER_FLAG_KEY_FRAME = 1;
827 constexpr int32_t BUFFER_FLAG_PARTIAL_FRAME = 8;
828 constexpr int32_t BUFFER_FLAG_SYNC_FRAME = 1;
829 constexpr int32_t CONFIGURE_FLAG_ENCODE = 1;
830 constexpr int32_t CRYPTO_MODE_AES_CBC     = 2;
831 constexpr int32_t CRYPTO_MODE_AES_CTR     = 1;
832 constexpr int32_t CRYPTO_MODE_UNENCRYPTED = 0;
833 constexpr int32_t INFO_OUTPUT_BUFFERS_CHANGED = -3;
834 constexpr int32_t INFO_OUTPUT_FORMAT_CHANGED  = -2;
835 constexpr int32_t INFO_TRY_AGAIN_LATER        = -1;
836 constexpr int32_t VIDEO_SCALING_MODE_SCALE_TO_FIT               = 1;
837 constexpr int32_t VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING = 2;
838 constexpr char PARAMETER_KEY_OFFSET_TIME[] = "time-offset-us";
839 constexpr char PARAMETER_KEY_REQUEST_SYNC_FRAME[] = "request-sync";
840 constexpr char PARAMETER_KEY_SUSPEND[] = "drop-input-frames";
841 constexpr char PARAMETER_KEY_SUSPEND_TIME[] = "drop-start-time-us";
842 constexpr char PARAMETER_KEY_VIDEO_BITRATE[] = "video-bitrate";
843 
844 }
845 
846 #endif  // MEDIA_CODEC_CONSTANTS_H_
847 
848