1/*
2 * Copyright 2013, 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#ifndef VIDEO_FORMATS_H_
18
19#define VIDEO_FORMATS_H_
20
21#include <media/stagefright/foundation/ABase.h>
22
23#include <stdint.h>
24
25namespace android {
26
27struct AString;
28
29// This class encapsulates that video resolution capabilities of a wfd source
30// or sink as outlined in the wfd specs. Currently three sets of resolutions
31// are specified, each of which supports up to 32 resolutions.
32// In addition to its capabilities each sink/source also publishes its
33// "native" resolution, presumably one that is preferred among all others
34// because it wouldn't require any scaling and directly corresponds to the
35// display capabilities/pixels.
36struct VideoFormats {
37    VideoFormats();
38
39    struct config_t {
40        size_t width, height, framesPerSecond;
41        bool interlaced;
42        unsigned char profile, level;
43    };
44
45    enum ProfileType {
46        PROFILE_CBP = 0,
47        PROFILE_CHP,
48        kNumProfileTypes,
49    };
50
51    enum LevelType {
52        LEVEL_31 = 0,
53        LEVEL_32,
54        LEVEL_40,
55        LEVEL_41,
56        LEVEL_42,
57        kNumLevelTypes,
58    };
59
60    enum ResolutionType {
61        RESOLUTION_CEA,
62        RESOLUTION_VESA,
63        RESOLUTION_HH,
64        kNumResolutionTypes,
65    };
66
67    void setNativeResolution(ResolutionType type, size_t index);
68    void getNativeResolution(ResolutionType *type, size_t *index) const;
69
70    void disableAll();
71    void enableAll();
72    void enableResolutionUpto(
73            ResolutionType type, size_t index,
74            ProfileType profile, LevelType level);
75
76    void setResolutionEnabled(
77            ResolutionType type, size_t index, bool enabled = true);
78
79    bool isResolutionEnabled(ResolutionType type, size_t index) const;
80
81    void setProfileLevel(
82            ResolutionType type, size_t index,
83            ProfileType profile, LevelType level);
84
85    void getProfileLevel(
86            ResolutionType type, size_t index,
87            ProfileType *profile, LevelType *level) const;
88
89    static bool GetConfiguration(
90            ResolutionType type, size_t index,
91            size_t *width, size_t *height, size_t *framesPerSecond,
92            bool *interlaced);
93
94    static bool GetProfileLevel(
95            ProfileType profile, LevelType level,
96            unsigned *profileIdc, unsigned *levelIdc,
97            unsigned *constraintSet);
98
99    bool parseFormatSpec(const char *spec);
100    AString getFormatSpec(bool forM4Message = false) const;
101
102    static bool PickBestFormat(
103            const VideoFormats &sinkSupported,
104            const VideoFormats &sourceSupported,
105            ResolutionType *chosenType,
106            size_t *chosenIndex,
107            ProfileType *chosenProfile,
108            LevelType *chosenLevel);
109
110private:
111    bool parseH264Codec(const char *spec);
112    ResolutionType mNativeType;
113    size_t mNativeIndex;
114
115    uint32_t mResolutionEnabled[kNumResolutionTypes];
116    static const config_t mResolutionTable[kNumResolutionTypes][32];
117    config_t mConfigs[kNumResolutionTypes][32];
118
119    DISALLOW_EVIL_CONSTRUCTORS(VideoFormats);
120};
121
122}  // namespace android
123
124#endif  // VIDEO_FORMATS_H_
125
126