android_defs.h revision 3ac5dcc05fe321e4f01918aef2e3e54e22c9a5c1 
1/*
2 * Copyright (C) 2010 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/**
19 * Used to define the mapping from an OpenSL ES or OpenMAX AL object to an Android
20 * media framework object
21 */
22enum AndroidObjectType {
23    INVALID_TYPE                                =-1,
24    // audio player, playing from a URI or FD data source
25    AUDIOPLAYER_FROM_URIFD                      = 0,
26    // audio player, playing PCM buffers in a buffer queue data source
27    AUDIOPLAYER_FROM_PCM_BUFFERQUEUE            = 1,
28    // audio player, playing transport stream packets in an Android buffer queue data source
29    AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE      = 2,
30    // audio player, decoding from a URI or FD data source to a buffer queue data sink in PCM format
31    AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE   = 3,
32    // audio video player, playing transport stream packets in an Android buffer queue data source
33    AUDIOVIDEOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE = 4,
34    // audio video player, playing from a URI or FD data source
35    AUDIOVIDEOPLAYER_FROM_URIFD                 = 5,
36    // audio recorder, recording from an input device data source, streamed into a
37    //   PCM buffer queue data sink
38    AUDIORECORDER_FROM_MIC_TO_PCM_BUFFERQUEUE   = 6,
39    // audio player, decoding from an Android buffer queue with ADTS data,
40    //   to a buffer queue data sink in PCM format
41    AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE = 7,
42    NUM_AUDIOPLAYER_MAP_TYPES
43};
44
45
46/**
47 * Used to define the states of the OpenSL ES / OpenMAX AL object initialization and preparation
48 * with regards to the Android-side of the data, in particular as affected by the play state.
49 */
50enum AndroidObjectState {
51    ANDROID_UNINITIALIZED = -1, // never called SetPlayState(PAUSED or PLAYING)
52    ANDROID_PREPARING,          // currently preparing due to first SetPlayState(PAUSED or PLAYING)
53    ANDROID_READY,              // preparation has completed, and will not be attempted again
54    // NUM_ANDROID_STATES       // unused
55};
56
57
58#define ANDROID_DEFAULT_OUTPUT_STREAM_TYPE AUDIO_STREAM_MUSIC
59
60#define PLAYER_FAILURE ((int32_t) android::UNKNOWN_ERROR)
61#define PLAYER_SUCCESS ((int32_t) android::NO_ERROR)
62
63#define PLAYER_FD_FIND_FILE_SIZE ((int64_t)0xFFFFFFFFFFFFFFFFll)
64
65#define MPEG2_TS_BLOCK_SIZE 188
66
67typedef struct AudioPlayback_Parameters_struct {
68    int streamType;
69    int sessionId;
70} AudioPlayback_Parameters;
71
72/**
73 * Structure to maintain the set of audio levels about a player
74 */
75typedef struct AndroidAudioLevels_t {
76    /**
77     * Send level to aux effect, there's a single aux bus, so there's a single level
78     */
79    // FIXME not used yet, will be used when supporting effects in OpenMAX AL
80    //SLmillibel mAuxSendLevel;
81    /**
82     * Attenuation factor derived from direct level
83     */
84    // FIXME not used yet, will be used when supporting effects in OpenMAX AL
85    //float mAmplFromDirectLevel;
86    /**
87     * Android Left/Right volume
88     * The final volume of an Android AudioTrack or MediaPlayer is a stereo amplification
89     * (or attenuation) represented as a float from 0.0f to 1.0f
90     */
91    float mFinalVolume[STEREO_CHANNELS];
92} AndroidAudioLevels;
93
94
95/**
96 * Event notification callback from Android to SL ES framework
97 */
98typedef void (*notif_cbf_t)(int event, int data1, int data2, void* notifUser);
99
100/**
101 * Audio data push callback from Android objects to SL ES framework
102 */
103typedef size_t (*data_push_cbf_t)(const uint8_t *data, size_t size, CAudioPlayer* ap);
104
105
106/**
107 * Events sent to mNotifyClient during prepare, prefetch, and playback
108 * used in APlayer::notify() and AMessage::findxxx()
109 */
110#define PLAYEREVENT_PREPARED                "prep"
111#define PLAYEREVENT_PREFETCHSTATUSCHANGE    "prsc"
112#define PLAYEREVENT_PREFETCHFILLLEVELUPDATE "pflu"
113#define PLAYEREVENT_ENDOFSTREAM             "eos"
114#define PLAYEREVENT_VIDEO_SIZE_UPDATE       "vsiz"
115#define PLAYEREVENT_CHANNEL_COUNT           "ccnt"  // channel count is now known
116#define PLAYEREVENT_PLAY                    "play"  // SL_PLAYEVENT_*
117
118
119/**
120 * Time value when time is unknown. Used for instance for duration or playback position
121 */
122#define ANDROID_UNKNOWN_TIME -1
123
124/**
125 * Event mask for MPEG-2 TS events associated with TS data
126 */
127#define ANDROID_MP2TSEVENT_NONE          ((SLuint32) 0x0)
128// buffer is at End Of Stream
129#define ANDROID_MP2TSEVENT_EOS           ((SLuint32) 0x1)
130// buffer marks a discontinuity with previous TS data, resume display as soon as possible
131#define ANDROID_MP2TSEVENT_DISCONTINUITY ((SLuint32) 0x1 << 1)
132// buffer marks a discontinuity with previous TS data, resume display upon reaching the
133// associated presentation time stamp
134#define ANDROID_MP2TSEVENT_DISCON_NEWPTS ((SLuint32) 0x1 << 2)
135// buffer marks a format change with previous TS data, resume display as soon as possible
136#define ANDROID_MP2TSEVENT_FORMAT_CHANGE ((SLuint32) 0x1 << 3)
137
138/**
139 * Event mask for AAC ADTS events associated with ADTS data
140 */
141#define ANDROID_ADTSEVENT_NONE           ANDROID_MP2TSEVENT_NONE
142// buffer is at End Of Stream
143#define ANDROID_ADTSEVENT_EOS            ANDROID_MP2TSEVENT_EOS
144
145/**
146 * Types of buffers stored in Android Buffer Queues, see IAndroidBufferQueue.mBufferType
147 */
148enum AndroidBufferType_type {
149    kAndroidBufferTypeInvalid = ((SLuint16) 0x0),
150    kAndroidBufferTypeMpeg2Ts = ((SLuint16) 0x1),
151    kAndroidBufferTypeAacadts = ((SLuint16) 0x2),
152};
153
154/**
155 * MIME types required for data in Android Buffer Queues
156 */
157#define ANDROID_MIME_MP2TS                     "video/mp2ts"
158// the MIME type used elsewhere in the Android framework for AAC ADTS
159#define ANDROID_MIME_AACADTS_ANDROID_FRAMEWORK "audio/aac-adts"
160// the MIME type applications should use for AAC ADTS
161#define ANDROID_MIME_AACADTS                   "audio/vnd.android.aac-adts"
162
163/**
164 * Notification thresholds relative to content duration in the cache
165 */
166#define DURATION_CACHED_HIGH_MS  30000 // 30s
167#define DURATION_CACHED_MED_MS   10000 // 10s
168#define DURATION_CACHED_LOW_MS    2000 //  2s
169
170
171namespace android {
172
173/**
174 * Prefetch cache status
175 */
176enum CacheStatus_t {
177        kStatusUnknown = -1,
178        kStatusEmpty   = 0,
179        kStatusLow,
180        kStatusIntermediate,
181        kStatusEnough,
182        kStatusHigh
183};
184
185enum {
186    kDataLocatorNone = 'none',
187    kDataLocatorUri  = 'uri',
188    kDataLocatorFd   = 'fd',
189};
190
191struct FdInfo {
192    int fd;
193    int64_t offset;
194    int64_t length;
195    bool mCloseAfterUse;    // whether to close fd after last reference to fd
196};
197
198// TODO currently used by SfPlayer, to replace by DataLocator2
199union DataLocator {
200    char* uri;
201    FdInfo fdi;
202};
203
204union DataLocator2 {
205    const char* uriRef;
206    FdInfo fdi;
207};
208
209} // namespace android
210