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 */ 22 enum 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 */ 50 enum 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_PACKET_SIZE 188 66 #define MPEG2_TS_PACKET_SYNC 0x47 67 68 struct AudioPlayback_Parameters { 69 audio_stream_type_t streamType; 70 int sessionId; 71 }; 72 73 /** 74 * Structure to maintain the set of audio levels about a player 75 */ 76 struct AndroidAudioLevels { 77 /** 78 * Send level to aux effect, there's a single aux bus, so there's a single level 79 */ 80 // FIXME not used yet, will be used when supporting effects in OpenMAX AL 81 //SLmillibel mAuxSendLevel; 82 /** 83 * Attenuation factor derived from direct level 84 */ 85 // FIXME not used yet, will be used when supporting effects in OpenMAX AL 86 //float mAmplFromDirectLevel; 87 /** 88 * Android Left/Right volume 89 * The final volume of an Android AudioTrack or MediaPlayer is a stereo amplification 90 * (or attenuation) represented as a float from 0.0f to 1.0f 91 */ 92 float mFinalVolume[STEREO_CHANNELS]; 93 }; 94 95 96 /** 97 * Event notification callback from Android to SL ES framework 98 */ 99 typedef void (*notif_cbf_t)(int event, int data1, int data2, void* notifUser); 100 101 /** 102 * Audio data push callback from Android objects to SL ES framework 103 */ 104 typedef size_t (*data_push_cbf_t)(const uint8_t *data, size_t size, CAudioPlayer* ap); 105 106 107 /** 108 * Events sent to mNotifyClient during prepare, prefetch, and playback 109 * used in APlayer::notify() and AMessage::findxxx() 110 */ 111 #define PLAYEREVENT_PREPARED "prep" 112 #define PLAYEREVENT_PREFETCHSTATUSCHANGE "prsc" 113 #define PLAYEREVENT_PREFETCHFILLLEVELUPDATE "pflu" 114 #define PLAYEREVENT_ENDOFSTREAM "eos" 115 #define PLAYEREVENT_VIDEO_SIZE_UPDATE "vsiz" 116 #define PLAYEREVENT_CHANNEL_COUNT "ccnt" // channel count is now known 117 #define PLAYEREVENT_PLAY "play" // SL_PLAYEVENT_* 118 #define PLAYEREVENT_ERRORAFTERPREPARE "easp" // error after successful prepare 119 120 121 /** 122 * Time value when time is unknown. Used for instance for duration or playback position 123 */ 124 #define ANDROID_UNKNOWN_TIME -1 125 126 /** 127 * Event mask for MPEG-2 TS events associated with TS data 128 */ 129 #define ANDROID_MP2TSEVENT_NONE ((SLuint32) 0x0) 130 // buffer is at End Of Stream 131 #define ANDROID_MP2TSEVENT_EOS ((SLuint32) 0x1) 132 // buffer marks a discontinuity with previous TS data, resume display as soon as possible 133 #define ANDROID_MP2TSEVENT_DISCONTINUITY ((SLuint32) 0x1 << 1) 134 // buffer marks a discontinuity with previous TS data, resume display upon reaching the 135 // associated presentation time stamp 136 #define ANDROID_MP2TSEVENT_DISCON_NEWPTS ((SLuint32) 0x1 << 2) 137 // buffer marks a format change with previous TS data, resume display as soon as possible 138 #define ANDROID_MP2TSEVENT_FORMAT_CHANGE_FULL ((SLuint32) 0x1 << 3) 139 #define ANDROID_MP2TSEVENT_FORMAT_CHANGE_VIDEO ((SLuint32) 0x1 << 4) 140 141 /** 142 * Event mask for AAC ADTS events associated with ADTS data 143 */ 144 #define ANDROID_ADTSEVENT_NONE ANDROID_MP2TSEVENT_NONE 145 // buffer is at End Of Stream 146 #define ANDROID_ADTSEVENT_EOS ANDROID_MP2TSEVENT_EOS 147 148 /** 149 * Types of buffers stored in Android Buffer Queues, see IAndroidBufferQueue.mBufferType 150 */ 151 enum AndroidBufferType_type { 152 kAndroidBufferTypeInvalid = ((SLuint16) 0x0), 153 kAndroidBufferTypeMpeg2Ts = ((SLuint16) 0x1), 154 kAndroidBufferTypeAacadts = ((SLuint16) 0x2), 155 }; 156 157 /** 158 * MIME types required for data in Android Buffer Queues 159 */ 160 // The preferred MIME types for new applications are in ../../include/*/OpenMAXAL_Android.h 161 // The legacy MIME type used elsewhere in the Android framework for AAC ADTS is below: 162 #define ANDROID_MIME_AACADTS_ANDROID_FRAMEWORK "audio/aac-adts" 163 164 /** 165 * Notification thresholds relative to content duration in the cache 166 */ 167 #define DURATION_CACHED_HIGH_MS 30000 // 30s 168 #define DURATION_CACHED_MED_MS 10000 // 10s 169 #define DURATION_CACHED_LOW_MS 2000 // 2s 170 171 172 namespace android { 173 174 /** 175 * Prefetch cache status 176 */ 177 enum CacheStatus_t { 178 kStatusUnknown = -1, 179 kStatusEmpty = 0, 180 kStatusLow, 181 kStatusIntermediate, 182 kStatusEnough, 183 kStatusHigh 184 }; 185 186 enum { 187 kDataLocatorNone = 'none', 188 kDataLocatorUri = 'uri', 189 kDataLocatorFd = 'fd', 190 }; 191 192 struct FdInfo { 193 int fd; 194 int64_t offset; 195 int64_t length; 196 bool mCloseAfterUse; // whether to close fd after last reference to fd 197 }; 198 199 // TODO currently used by SfPlayer, to replace by DataLocator2 200 union DataLocator { 201 char* uri; 202 FdInfo fdi; 203 }; 204 205 union DataLocator2 { 206 const char* uriRef; 207 FdInfo fdi; 208 }; 209 210 } // namespace android 211