Andrea Falcone | 1c4977f | 2020-07-23 10:58:25 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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 | * @addtogroup Media |
| 19 | * @{ |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file NdkMediaExtractor.h |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * This file defines an NDK API. |
| 28 | * Do not remove methods. |
| 29 | * Do not change method signatures. |
| 30 | * Do not change the value of constants. |
| 31 | * Do not change the size of any of the classes defined in here. |
| 32 | * Do not reference types that are not part of the NDK. |
| 33 | * Do not #include files that aren't part of the NDK. |
| 34 | */ |
| 35 | |
| 36 | #ifndef _NDK_MEDIA_EXTRACTOR_H |
| 37 | #define _NDK_MEDIA_EXTRACTOR_H |
| 38 | |
| 39 | #include <sys/cdefs.h> |
| 40 | #include <sys/types.h> |
| 41 | |
| 42 | #include "NdkMediaCodec.h" |
| 43 | #include "NdkMediaDataSource.h" |
| 44 | #include "NdkMediaFormat.h" |
| 45 | #include "NdkMediaCrypto.h" |
| 46 | |
| 47 | __BEGIN_DECLS |
| 48 | |
| 49 | struct AMediaExtractor; |
| 50 | typedef struct AMediaExtractor AMediaExtractor; |
| 51 | |
| 52 | #if __ANDROID_API__ >= 21 |
| 53 | |
| 54 | /** |
| 55 | * Create new media extractor. |
| 56 | * |
| 57 | * Available since API level 21. |
| 58 | */ |
| 59 | AMediaExtractor* AMediaExtractor_new() __INTRODUCED_IN(21); |
| 60 | |
| 61 | /** |
| 62 | * Delete a previously created media extractor. |
| 63 | * |
| 64 | * Available since API level 21. |
| 65 | */ |
| 66 | media_status_t AMediaExtractor_delete(AMediaExtractor*) __INTRODUCED_IN(21); |
| 67 | |
| 68 | /** |
| 69 | * Set the file descriptor from which the extractor will read. |
| 70 | * |
| 71 | * Available since API level 21. |
| 72 | */ |
| 73 | media_status_t AMediaExtractor_setDataSourceFd(AMediaExtractor*, int fd, off64_t offset, |
| 74 | off64_t length) __INTRODUCED_IN(21); |
| 75 | |
| 76 | /** |
| 77 | * Set the URI from which the extractor will read. |
| 78 | * |
| 79 | * Available since API level 21. |
| 80 | */ |
| 81 | media_status_t AMediaExtractor_setDataSource(AMediaExtractor*, |
| 82 | const char *location) __INTRODUCED_IN(21); |
| 83 | |
| 84 | #if __ANDROID_API__ >= 28 |
| 85 | |
| 86 | /** |
| 87 | * Set the custom data source implementation from which the extractor will read. |
| 88 | * |
| 89 | * Available since API level 28. |
| 90 | */ |
| 91 | media_status_t AMediaExtractor_setDataSourceCustom(AMediaExtractor*, |
| 92 | AMediaDataSource *src) __INTRODUCED_IN(28); |
| 93 | |
| 94 | #endif /* __ANDROID_API__ >= 28 */ |
| 95 | |
| 96 | /** |
| 97 | * Return the number of tracks in the previously specified media file |
| 98 | * |
| 99 | * Available since API level 21. |
| 100 | */ |
| 101 | size_t AMediaExtractor_getTrackCount(AMediaExtractor*) __INTRODUCED_IN(21); |
| 102 | |
| 103 | /** |
| 104 | * Return the format of the specified track. The caller must free the returned format |
| 105 | * |
| 106 | * Available since API level 21. |
| 107 | */ |
| 108 | AMediaFormat* AMediaExtractor_getTrackFormat(AMediaExtractor*, size_t idx) __INTRODUCED_IN(21); |
| 109 | |
| 110 | /** |
| 111 | * Select the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and |
| 112 | * getSampleTime only retrieve information for the subset of tracks selected. |
| 113 | * Selecting the same track multiple times has no effect, the track is |
| 114 | * only selected once. |
| 115 | * |
| 116 | * Available since API level 21. |
| 117 | */ |
| 118 | media_status_t AMediaExtractor_selectTrack(AMediaExtractor*, size_t idx) __INTRODUCED_IN(21); |
| 119 | |
| 120 | /** |
| 121 | * Unselect the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and |
| 122 | * getSampleTime only retrieve information for the subset of tracks selected. |
| 123 | * |
| 124 | * Available since API level 21. |
| 125 | */ |
| 126 | media_status_t AMediaExtractor_unselectTrack(AMediaExtractor*, size_t idx) __INTRODUCED_IN(21); |
| 127 | |
| 128 | /** |
| 129 | * Read the current sample. |
| 130 | * |
| 131 | * Available since API level 21. |
| 132 | */ |
| 133 | ssize_t AMediaExtractor_readSampleData(AMediaExtractor*, |
| 134 | uint8_t *buffer, size_t capacity) __INTRODUCED_IN(21); |
| 135 | |
| 136 | /** |
| 137 | * Read the current sample's flags. |
| 138 | * |
| 139 | * Available since API level 21. |
| 140 | */ |
| 141 | uint32_t AMediaExtractor_getSampleFlags(AMediaExtractor*) __INTRODUCED_IN(21); |
| 142 | |
| 143 | /** |
| 144 | * Returns the track index the current sample originates from (or -1 |
| 145 | * if no more samples are available) |
| 146 | * |
| 147 | * Available since API level 21. |
| 148 | */ |
| 149 | int AMediaExtractor_getSampleTrackIndex(AMediaExtractor*) __INTRODUCED_IN(21); |
| 150 | |
| 151 | /** |
| 152 | * Returns the current sample's presentation time in microseconds. |
| 153 | * or -1 if no more samples are available. |
| 154 | * |
| 155 | * Available since API level 21. |
| 156 | */ |
| 157 | int64_t AMediaExtractor_getSampleTime(AMediaExtractor*) __INTRODUCED_IN(21); |
| 158 | |
| 159 | /** |
| 160 | * Advance to the next sample. Returns false if no more sample data |
| 161 | * is available (end of stream). |
| 162 | * |
| 163 | * Available since API level 21. |
| 164 | */ |
| 165 | bool AMediaExtractor_advance(AMediaExtractor*) __INTRODUCED_IN(21); |
| 166 | |
| 167 | typedef enum { |
| 168 | AMEDIAEXTRACTOR_SEEK_PREVIOUS_SYNC, |
| 169 | AMEDIAEXTRACTOR_SEEK_NEXT_SYNC, |
| 170 | AMEDIAEXTRACTOR_SEEK_CLOSEST_SYNC |
| 171 | } SeekMode; |
| 172 | |
| 173 | /** |
| 174 | * Available since API level 21. |
| 175 | */ |
| 176 | media_status_t AMediaExtractor_seekTo(AMediaExtractor*, |
| 177 | int64_t seekPosUs, SeekMode mode) __INTRODUCED_IN(21); |
| 178 | |
| 179 | /** |
| 180 | * mapping of crypto scheme uuid to the scheme specific data for that scheme |
| 181 | */ |
| 182 | typedef struct PsshEntry { |
| 183 | AMediaUUID uuid; |
| 184 | size_t datalen; |
| 185 | void *data; |
| 186 | } PsshEntry; |
| 187 | |
| 188 | /** |
| 189 | * list of crypto schemes and their data |
| 190 | */ |
| 191 | typedef struct PsshInfo { |
| 192 | size_t numentries; |
| 193 | PsshEntry entries[0]; |
| 194 | } PsshInfo; |
| 195 | |
| 196 | /** |
| 197 | * Get the PSSH info if present. |
| 198 | * |
| 199 | * Available since API level 21. |
| 200 | */ |
| 201 | PsshInfo* AMediaExtractor_getPsshInfo(AMediaExtractor*) __INTRODUCED_IN(21); |
| 202 | |
| 203 | /** |
| 204 | * Available since API level 21. |
| 205 | */ |
| 206 | AMediaCodecCryptoInfo *AMediaExtractor_getSampleCryptoInfo(AMediaExtractor *) __INTRODUCED_IN(21); |
| 207 | |
| 208 | enum { |
| 209 | AMEDIAEXTRACTOR_SAMPLE_FLAG_SYNC = 1, |
| 210 | AMEDIAEXTRACTOR_SAMPLE_FLAG_ENCRYPTED = 2, |
| 211 | }; |
| 212 | |
| 213 | #if __ANDROID_API__ >= 28 |
| 214 | |
| 215 | /** |
| 216 | * Returns the format of the extractor. The caller must free the returned format |
| 217 | * using AMediaFormat_delete(format). |
| 218 | * |
| 219 | * This function will always return a format; however, the format could be empty |
| 220 | * (no key-value pairs) if the media container does not provide format information. |
| 221 | * |
| 222 | * Available since API level 28. |
| 223 | */ |
| 224 | AMediaFormat* AMediaExtractor_getFileFormat(AMediaExtractor*) __INTRODUCED_IN(28); |
| 225 | |
| 226 | /** |
| 227 | * Returns the size of the current sample in bytes, or -1 when no samples are |
| 228 | * available (end of stream). This API can be used in in conjunction with |
| 229 | * AMediaExtractor_readSampleData: |
| 230 | * |
| 231 | * ssize_t sampleSize = AMediaExtractor_getSampleSize(ex); |
| 232 | * uint8_t *buf = new uint8_t[sampleSize]; |
| 233 | * AMediaExtractor_readSampleData(ex, buf, sampleSize); |
| 234 | * |
| 235 | * Available since API level 28. |
| 236 | */ |
| 237 | ssize_t AMediaExtractor_getSampleSize(AMediaExtractor*) __INTRODUCED_IN(28); |
| 238 | |
| 239 | /** |
| 240 | * Returns the duration of cached media samples downloaded from a network data source |
| 241 | * (AMediaExtractor_setDataSource with a "http(s)" URI) in microseconds. |
| 242 | * |
| 243 | * This information is calculated using total bitrate; if total bitrate is not in the |
| 244 | * media container it is calculated using total duration and file size. |
| 245 | * |
| 246 | * Returns -1 when the extractor is not reading from a network data source, or when the |
| 247 | * cached duration cannot be calculated (bitrate, duration, and file size information |
| 248 | * not available). |
| 249 | * |
| 250 | * Available since API level 28. |
| 251 | */ |
| 252 | int64_t AMediaExtractor_getCachedDuration(AMediaExtractor *) __INTRODUCED_IN(28); |
| 253 | |
| 254 | /** |
| 255 | * Read the current sample's metadata format into |fmt|. Examples of sample metadata are |
| 256 | * SEI (supplemental enhancement information) and MPEG user data, both of which can embed |
| 257 | * closed-caption data. |
| 258 | * |
| 259 | * Returns AMEDIA_OK on success or AMEDIA_ERROR_* to indicate failure reason. |
| 260 | * Existing key-value pairs in |fmt| would be removed if this API returns AMEDIA_OK. |
| 261 | * The contents of |fmt| is undefined if this API returns AMEDIA_ERROR_*. |
| 262 | * |
| 263 | * Available since API level 28. |
| 264 | */ |
| 265 | media_status_t AMediaExtractor_getSampleFormat(AMediaExtractor *ex, |
| 266 | AMediaFormat *fmt) __INTRODUCED_IN(28); |
| 267 | |
| 268 | #endif /* __ANDROID_API__ >= 28 */ |
| 269 | |
| 270 | #endif /* __ANDROID_API__ >= 21 */ |
| 271 | |
| 272 | __END_DECLS |
| 273 | |
| 274 | #endif // _NDK_MEDIA_EXTRACTOR_H |
| 275 | |
| 276 | /** @} */ |