Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | * Utility functions to help build and parse the AAC Codec Information |
| 20 | * Element and Media Payload. |
| 21 | * |
| 22 | ******************************************************************************/ |
| 23 | |
| 24 | #define LOG_TAG "a2dp_aac" |
| 25 | |
| 26 | #include "bt_target.h" |
| 27 | |
| 28 | #include "a2dp_aac.h" |
| 29 | |
| 30 | #include <string.h> |
| 31 | |
| 32 | #include <base/logging.h> |
| 33 | #include "a2dp_aac_encoder.h" |
| 34 | #include "bt_utils.h" |
| 35 | #include "osi/include/log.h" |
| 36 | #include "osi/include/osi.h" |
| 37 | |
| 38 | #define A2DP_AAC_DEFAULT_BITRATE 320000 // 320 kbps |
| 39 | #define A2DP_AAC_MIN_BITRATE 64000 // 64 kbps |
| 40 | |
| 41 | // data type for the AAC Codec Information Element */ |
| 42 | // NOTE: bits_per_sample is needed only for AAC encoder initialization. |
| 43 | typedef struct { |
| 44 | uint8_t objectType; /* Object Type */ |
| 45 | uint16_t sampleRate; /* Sampling Frequency */ |
| 46 | uint8_t channelMode; /* STEREO/MONO */ |
| 47 | uint8_t variableBitRateSupport; /* Variable Bit Rate Support*/ |
| 48 | uint32_t bitRate; /* Bit rate */ |
| 49 | btav_a2dp_codec_bits_per_sample_t bits_per_sample; |
| 50 | } tA2DP_AAC_CIE; |
| 51 | |
| 52 | /* AAC Source codec capabilities */ |
| 53 | static const tA2DP_AAC_CIE a2dp_aac_caps = { |
| 54 | // objectType |
| 55 | A2DP_AAC_OBJECT_TYPE_MPEG2_LC, |
| 56 | // sampleRate |
| 57 | (A2DP_AAC_SAMPLING_FREQ_44100 | A2DP_AAC_SAMPLING_FREQ_48000 | |
| 58 | A2DP_AAC_SAMPLING_FREQ_88200 | A2DP_AAC_SAMPLING_FREQ_96000), |
| 59 | // channelMode |
| 60 | A2DP_AAC_CHANNEL_MODE_STEREO, |
| 61 | // variableBitRateSupport |
| 62 | A2DP_AAC_VARIABLE_BIT_RATE_DISABLED, |
| 63 | // bitRate |
| 64 | A2DP_AAC_DEFAULT_BITRATE, |
| 65 | // bits_per_sample |
| 66 | BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16}; |
| 67 | |
| 68 | /* Default AAC codec configuration */ |
| 69 | static const tA2DP_AAC_CIE a2dp_aac_default_config = { |
| 70 | A2DP_AAC_OBJECT_TYPE_MPEG2_LC, // objectType |
| 71 | A2DP_AAC_SAMPLING_FREQ_44100, // sampleRate |
| 72 | A2DP_AAC_CHANNEL_MODE_STEREO, // channelMode |
| 73 | A2DP_AAC_VARIABLE_BIT_RATE_DISABLED, // variableBitRateSupport |
| 74 | A2DP_AAC_DEFAULT_BITRATE, // bitRate |
| 75 | BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16 // bits_per_sample |
| 76 | }; |
| 77 | |
| 78 | static const tA2DP_ENCODER_INTERFACE a2dp_encoder_interface_aac = { |
| 79 | a2dp_aac_encoder_init, |
| 80 | a2dp_aac_encoder_cleanup, |
| 81 | a2dp_aac_feeding_reset, |
| 82 | a2dp_aac_feeding_flush, |
| 83 | a2dp_aac_get_encoder_interval_ms, |
| 84 | a2dp_aac_send_frames, |
| 85 | a2dp_aac_debug_codec_dump}; |
| 86 | |
| 87 | UNUSED_ATTR static tA2DP_STATUS A2DP_CodecInfoMatchesCapabilityAac( |
| 88 | const tA2DP_AAC_CIE* p_cap, const uint8_t* p_codec_info, |
| 89 | bool is_peer_codec_info); |
| 90 | |
| 91 | // Builds the AAC Media Codec Capabilities byte sequence beginning from the |
| 92 | // LOSC octet. |media_type| is the media type |AVDT_MEDIA_TYPE_*|. |
| 93 | // |p_ie| is a pointer to the AAC Codec Information Element information. |
| 94 | // The result is stored in |p_result|. Returns A2DP_SUCCESS on success, |
| 95 | // otherwise the corresponding A2DP error status code. |
| 96 | static tA2DP_STATUS A2DP_BuildInfoAac(uint8_t media_type, |
| 97 | const tA2DP_AAC_CIE* p_ie, |
| 98 | uint8_t* p_result) { |
| 99 | if (p_ie == NULL || p_result == NULL) { |
| 100 | return A2DP_INVALID_PARAMS; |
| 101 | } |
| 102 | |
| 103 | *p_result++ = A2DP_AAC_CODEC_LEN; |
| 104 | *p_result++ = (media_type << 4); |
| 105 | *p_result++ = A2DP_MEDIA_CT_AAC; |
| 106 | |
| 107 | // Object Type |
| 108 | if (p_ie->objectType == 0) return A2DP_INVALID_PARAMS; |
| 109 | *p_result++ = p_ie->objectType; |
| 110 | |
| 111 | // Sampling Frequency |
| 112 | if (p_ie->sampleRate == 0) return A2DP_INVALID_PARAMS; |
| 113 | *p_result++ = (uint8_t)(p_ie->sampleRate & A2DP_AAC_SAMPLING_FREQ_MASK0); |
| 114 | *p_result = (uint8_t)((p_ie->sampleRate & A2DP_AAC_SAMPLING_FREQ_MASK1) >> 8); |
| 115 | |
| 116 | // Channel Mode |
| 117 | if (p_ie->channelMode == 0) return A2DP_INVALID_PARAMS; |
| 118 | *p_result++ |= (p_ie->channelMode & A2DP_AAC_CHANNEL_MODE_MASK); |
| 119 | |
| 120 | // Variable Bit Rate Support |
| 121 | *p_result = (p_ie->variableBitRateSupport & A2DP_AAC_VARIABLE_BIT_RATE_MASK); |
| 122 | |
| 123 | // Bit Rate |
| 124 | *p_result++ |= (uint8_t)((p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK0) >> 16); |
| 125 | *p_result++ = (uint8_t)((p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK1) >> 8); |
| 126 | *p_result++ = (uint8_t)(p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK2); |
| 127 | |
| 128 | return A2DP_SUCCESS; |
| 129 | } |
| 130 | |
| 131 | // Parses the AAC Media Codec Capabilities byte sequence beginning from the |
| 132 | // LOSC octet. The result is stored in |p_ie|. The byte sequence to parse is |
| 133 | // |p_codec_info|. If |is_capability| is true, the byte sequence is |
| 134 | // codec capabilities, otherwise is codec configuration. |
| 135 | // Returns A2DP_SUCCESS on success, otherwise the corresponding A2DP error |
| 136 | // status code. |
| 137 | static tA2DP_STATUS A2DP_ParseInfoAac(tA2DP_AAC_CIE* p_ie, |
| 138 | const uint8_t* p_codec_info, |
| 139 | bool is_capability) { |
| 140 | uint8_t losc; |
| 141 | uint8_t media_type; |
| 142 | tA2DP_CODEC_TYPE codec_type; |
| 143 | |
| 144 | if (p_ie == NULL || p_codec_info == NULL) return A2DP_INVALID_PARAMS; |
| 145 | |
| 146 | // Check the codec capability length |
| 147 | losc = *p_codec_info++; |
| 148 | if (losc != A2DP_AAC_CODEC_LEN) return A2DP_WRONG_CODEC; |
| 149 | |
| 150 | media_type = (*p_codec_info++) >> 4; |
| 151 | codec_type = *p_codec_info++; |
| 152 | /* Check the Media Type and Media Codec Type */ |
| 153 | if (media_type != AVDT_MEDIA_TYPE_AUDIO || codec_type != A2DP_MEDIA_CT_AAC) { |
| 154 | return A2DP_WRONG_CODEC; |
| 155 | } |
| 156 | |
| 157 | p_ie->objectType = *p_codec_info++; |
| 158 | p_ie->sampleRate = (*p_codec_info & A2DP_AAC_SAMPLING_FREQ_MASK0) | |
| 159 | (*(p_codec_info + 1) << 8 & A2DP_AAC_SAMPLING_FREQ_MASK1); |
| 160 | p_codec_info++; |
| 161 | p_ie->channelMode = *p_codec_info & A2DP_AAC_CHANNEL_MODE_MASK; |
| 162 | p_codec_info++; |
| 163 | |
| 164 | p_ie->variableBitRateSupport = |
| 165 | *p_codec_info & A2DP_AAC_VARIABLE_BIT_RATE_MASK; |
| 166 | |
| 167 | p_ie->bitRate = ((*p_codec_info) << 16 & A2DP_AAC_BIT_RATE_MASK0) | |
| 168 | (*(p_codec_info + 1) << 8 & A2DP_AAC_BIT_RATE_MASK1) | |
| 169 | (*(p_codec_info + 2) & A2DP_AAC_BIT_RATE_MASK2); |
| 170 | p_codec_info += 3; |
| 171 | |
| 172 | if (is_capability) return A2DP_SUCCESS; |
| 173 | |
| 174 | if (A2DP_BitsSet(p_ie->objectType) != A2DP_SET_ONE_BIT) |
| 175 | return A2DP_BAD_OBJ_TYPE; |
| 176 | if (A2DP_BitsSet(p_ie->sampleRate) != A2DP_SET_ONE_BIT) |
| 177 | return A2DP_BAD_SAMP_FREQ; |
| 178 | if (A2DP_BitsSet(p_ie->channelMode) != A2DP_SET_ONE_BIT) |
| 179 | return A2DP_BAD_CH_MODE; |
| 180 | |
| 181 | return A2DP_SUCCESS; |
| 182 | } |
| 183 | |
| 184 | bool A2DP_IsSourceCodecValidAac(const uint8_t* p_codec_info) { |
| 185 | tA2DP_AAC_CIE cfg_cie; |
| 186 | |
| 187 | /* Use a liberal check when parsing the codec info */ |
| 188 | return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) || |
| 189 | (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS); |
| 190 | } |
| 191 | |
| 192 | bool A2DP_IsSinkCodecValidAac(UNUSED_ATTR const uint8_t* p_codec_info) { |
| 193 | return false; |
| 194 | } |
| 195 | |
| 196 | bool A2DP_IsPeerSourceCodecValidAac(UNUSED_ATTR const uint8_t* p_codec_info) { |
| 197 | return false; |
| 198 | } |
| 199 | |
| 200 | bool A2DP_IsPeerSinkCodecValidAac(const uint8_t* p_codec_info) { |
| 201 | tA2DP_AAC_CIE cfg_cie; |
| 202 | |
| 203 | /* Use a liberal check when parsing the codec info */ |
| 204 | return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) || |
| 205 | (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS); |
| 206 | } |
| 207 | |
| 208 | bool A2DP_IsSinkCodecSupportedAac(UNUSED_ATTR const uint8_t* p_codec_info) { |
| 209 | return false; |
| 210 | } |
| 211 | |
| 212 | bool A2DP_IsPeerSourceCodecSupportedAac( |
| 213 | UNUSED_ATTR const uint8_t* p_codec_info) { |
| 214 | return false; |
| 215 | } |
| 216 | |
| 217 | tA2DP_STATUS A2DP_BuildSrc2SinkConfigAac(UNUSED_ATTR const uint8_t* p_src_cap, |
| 218 | UNUSED_ATTR uint8_t* p_pref_cfg) { |
| 219 | return A2DP_NS_CODEC_TYPE; |
| 220 | } |
| 221 | |
| 222 | // Checks whether A2DP AAC codec configuration matches with a device's codec |
| 223 | // capabilities. |p_cap| is the AAC codec configuration. |p_codec_info| is |
| 224 | // the device's codec capabilities. |
| 225 | // If |is_capability| is true, the byte sequence is codec capabilities, |
| 226 | // otherwise is codec configuration. |
| 227 | // |p_codec_info| contains the codec capabilities for a peer device that |
| 228 | // is acting as an A2DP source. |
| 229 | // Returns A2DP_SUCCESS if the codec configuration matches with capabilities, |
| 230 | // otherwise the corresponding A2DP error status code. |
| 231 | static tA2DP_STATUS A2DP_CodecInfoMatchesCapabilityAac( |
| 232 | const tA2DP_AAC_CIE* p_cap, const uint8_t* p_codec_info, |
| 233 | bool is_capability) { |
| 234 | tA2DP_STATUS status; |
| 235 | tA2DP_AAC_CIE cfg_cie; |
| 236 | |
| 237 | /* parse configuration */ |
| 238 | status = A2DP_ParseInfoAac(&cfg_cie, p_codec_info, is_capability); |
| 239 | if (status != A2DP_SUCCESS) { |
| 240 | LOG_ERROR(LOG_TAG, "%s: parsing failed %d", __func__, status); |
| 241 | return status; |
| 242 | } |
| 243 | |
| 244 | /* verify that each parameter is in range */ |
| 245 | |
| 246 | LOG_DEBUG(LOG_TAG, "%s: Object Type peer: 0x%x, capability 0x%x", __func__, |
| 247 | cfg_cie.objectType, p_cap->objectType); |
| 248 | LOG_DEBUG(LOG_TAG, "%s: Sample Rate peer: %u, capability %u", __func__, |
| 249 | cfg_cie.sampleRate, p_cap->sampleRate); |
| 250 | LOG_DEBUG(LOG_TAG, "%s: Channel Mode peer: 0x%x, capability 0x%x", __func__, |
| 251 | cfg_cie.channelMode, p_cap->channelMode); |
| 252 | LOG_DEBUG( |
| 253 | LOG_TAG, "%s: Variable Bit Rate Support peer: 0x%x, capability 0x%x", |
| 254 | __func__, cfg_cie.variableBitRateSupport, p_cap->variableBitRateSupport); |
| 255 | LOG_DEBUG(LOG_TAG, "%s: Bit Rate peer: %u, capability %u", __func__, |
| 256 | cfg_cie.bitRate, p_cap->bitRate); |
| 257 | |
| 258 | /* Object Type */ |
| 259 | if ((cfg_cie.objectType & p_cap->objectType) == 0) return A2DP_BAD_OBJ_TYPE; |
| 260 | |
| 261 | /* Sample Rate */ |
| 262 | if ((cfg_cie.sampleRate & p_cap->sampleRate) == 0) return A2DP_BAD_SAMP_FREQ; |
| 263 | |
| 264 | /* Channel Mode */ |
| 265 | if ((cfg_cie.channelMode & p_cap->channelMode) == 0) return A2DP_NS_CH_MODE; |
| 266 | |
| 267 | return A2DP_SUCCESS; |
| 268 | } |
| 269 | |
| 270 | bool A2DP_UsesRtpHeaderAac(UNUSED_ATTR bool content_protection_enabled, |
| 271 | UNUSED_ATTR const uint8_t* p_codec_info) { |
| 272 | return true; |
| 273 | } |
| 274 | |
| 275 | const char* A2DP_CodecNameAac(UNUSED_ATTR const uint8_t* p_codec_info) { |
| 276 | return "AAC"; |
| 277 | } |
| 278 | |
| 279 | bool A2DP_CodecTypeEqualsAac(const uint8_t* p_codec_info_a, |
| 280 | const uint8_t* p_codec_info_b) { |
| 281 | tA2DP_AAC_CIE aac_cie_a; |
| 282 | tA2DP_AAC_CIE aac_cie_b; |
| 283 | |
| 284 | // Check whether the codec info contains valid data |
| 285 | tA2DP_STATUS a2dp_status = |
| 286 | A2DP_ParseInfoAac(&aac_cie_a, p_codec_info_a, true); |
| 287 | if (a2dp_status != A2DP_SUCCESS) { |
| 288 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 289 | a2dp_status); |
| 290 | return false; |
| 291 | } |
| 292 | a2dp_status = A2DP_ParseInfoAac(&aac_cie_b, p_codec_info_b, true); |
| 293 | if (a2dp_status != A2DP_SUCCESS) { |
| 294 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 295 | a2dp_status); |
| 296 | return false; |
| 297 | } |
| 298 | |
| 299 | return true; |
| 300 | } |
| 301 | |
| 302 | bool A2DP_CodecEqualsAac(const uint8_t* p_codec_info_a, |
| 303 | const uint8_t* p_codec_info_b) { |
| 304 | tA2DP_AAC_CIE aac_cie_a; |
| 305 | tA2DP_AAC_CIE aac_cie_b; |
| 306 | |
| 307 | // Check whether the codec info contains valid data |
| 308 | tA2DP_STATUS a2dp_status = |
| 309 | A2DP_ParseInfoAac(&aac_cie_a, p_codec_info_a, true); |
| 310 | if (a2dp_status != A2DP_SUCCESS) { |
| 311 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 312 | a2dp_status); |
| 313 | return false; |
| 314 | } |
| 315 | a2dp_status = A2DP_ParseInfoAac(&aac_cie_b, p_codec_info_b, true); |
| 316 | if (a2dp_status != A2DP_SUCCESS) { |
| 317 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 318 | a2dp_status); |
| 319 | return false; |
| 320 | } |
| 321 | |
| 322 | return (aac_cie_a.objectType == aac_cie_b.objectType) && |
| 323 | (aac_cie_a.sampleRate == aac_cie_b.sampleRate) && |
| 324 | (aac_cie_a.channelMode == aac_cie_b.channelMode) && |
| 325 | (aac_cie_a.variableBitRateSupport == |
| 326 | aac_cie_b.variableBitRateSupport) && |
| 327 | (aac_cie_a.bitRate == aac_cie_b.bitRate); |
| 328 | } |
| 329 | |
| 330 | int A2DP_GetTrackSampleRateAac(const uint8_t* p_codec_info) { |
| 331 | tA2DP_AAC_CIE aac_cie; |
| 332 | |
| 333 | // Check whether the codec info contains valid data |
| 334 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 335 | if (a2dp_status != A2DP_SUCCESS) { |
| 336 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 337 | a2dp_status); |
| 338 | return -1; |
| 339 | } |
| 340 | |
| 341 | switch (aac_cie.sampleRate) { |
| 342 | case A2DP_AAC_SAMPLING_FREQ_8000: |
| 343 | return 8000; |
| 344 | case A2DP_AAC_SAMPLING_FREQ_11025: |
| 345 | return 11025; |
| 346 | case A2DP_AAC_SAMPLING_FREQ_12000: |
| 347 | return 12000; |
| 348 | case A2DP_AAC_SAMPLING_FREQ_16000: |
| 349 | return 16000; |
| 350 | case A2DP_AAC_SAMPLING_FREQ_22050: |
| 351 | return 22050; |
| 352 | case A2DP_AAC_SAMPLING_FREQ_24000: |
| 353 | return 24000; |
| 354 | case A2DP_AAC_SAMPLING_FREQ_32000: |
| 355 | return 32000; |
| 356 | case A2DP_AAC_SAMPLING_FREQ_44100: |
| 357 | return 44100; |
| 358 | case A2DP_AAC_SAMPLING_FREQ_48000: |
| 359 | return 48000; |
| 360 | case A2DP_AAC_SAMPLING_FREQ_64000: |
| 361 | return 64000; |
| 362 | case A2DP_AAC_SAMPLING_FREQ_88200: |
| 363 | return 88200; |
| 364 | case A2DP_AAC_SAMPLING_FREQ_96000: |
| 365 | return 96000; |
| 366 | } |
| 367 | |
| 368 | return -1; |
| 369 | } |
| 370 | |
| 371 | int A2DP_GetTrackBitsPerSampleAac(const uint8_t* p_codec_info) { |
| 372 | tA2DP_AAC_CIE aac_cie; |
| 373 | |
| 374 | // Check whether the codec info contains valid data |
| 375 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 376 | if (a2dp_status != A2DP_SUCCESS) { |
| 377 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 378 | a2dp_status); |
| 379 | return -1; |
| 380 | } |
| 381 | |
| 382 | // NOTE: Hard-coded value - currently the AAC encoder library |
| 383 | // is compiled with 16 bits per sample |
| 384 | return 16; |
| 385 | } |
| 386 | |
| 387 | int A2DP_GetTrackChannelCountAac(const uint8_t* p_codec_info) { |
| 388 | tA2DP_AAC_CIE aac_cie; |
| 389 | |
| 390 | // Check whether the codec info contains valid data |
| 391 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 392 | if (a2dp_status != A2DP_SUCCESS) { |
| 393 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 394 | a2dp_status); |
| 395 | return -1; |
| 396 | } |
| 397 | |
| 398 | switch (aac_cie.channelMode) { |
| 399 | case A2DP_AAC_CHANNEL_MODE_MONO: |
| 400 | return 1; |
| 401 | case A2DP_AAC_CHANNEL_MODE_STEREO: |
| 402 | return 2; |
| 403 | } |
| 404 | |
| 405 | return -1; |
| 406 | } |
| 407 | |
| 408 | int A2DP_GetSinkTrackChannelTypeAac(UNUSED_ATTR const uint8_t* p_codec_info) { |
| 409 | return -1; |
| 410 | } |
| 411 | |
| 412 | int A2DP_GetSinkFramesCountToProcessAac( |
| 413 | UNUSED_ATTR uint64_t time_interval_ms, |
| 414 | UNUSED_ATTR const uint8_t* p_codec_info) { |
| 415 | return -1; |
| 416 | } |
| 417 | |
| 418 | int A2DP_GetObjectTypeCodeAac(const uint8_t* p_codec_info) { |
| 419 | tA2DP_AAC_CIE aac_cie; |
| 420 | |
| 421 | // Check whether the codec info contains valid data |
| 422 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 423 | if (a2dp_status != A2DP_SUCCESS) { |
| 424 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 425 | a2dp_status); |
| 426 | return -1; |
| 427 | } |
| 428 | |
| 429 | switch (aac_cie.objectType) { |
| 430 | case A2DP_AAC_OBJECT_TYPE_MPEG2_LC: |
| 431 | case A2DP_AAC_OBJECT_TYPE_MPEG4_LC: |
| 432 | case A2DP_AAC_OBJECT_TYPE_MPEG4_LTP: |
| 433 | case A2DP_AAC_OBJECT_TYPE_MPEG4_SCALABLE: |
| 434 | return aac_cie.objectType; |
| 435 | default: |
| 436 | break; |
| 437 | } |
| 438 | |
| 439 | return -1; |
| 440 | } |
| 441 | |
| 442 | int A2DP_GetChannelModeCodeAac(const uint8_t* p_codec_info) { |
| 443 | tA2DP_AAC_CIE aac_cie; |
| 444 | |
| 445 | // Check whether the codec info contains valid data |
| 446 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 447 | if (a2dp_status != A2DP_SUCCESS) { |
| 448 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 449 | a2dp_status); |
| 450 | return -1; |
| 451 | } |
| 452 | |
| 453 | switch (aac_cie.channelMode) { |
| 454 | case A2DP_AAC_CHANNEL_MODE_MONO: |
| 455 | case A2DP_AAC_CHANNEL_MODE_STEREO: |
| 456 | return aac_cie.channelMode; |
| 457 | default: |
| 458 | break; |
| 459 | } |
| 460 | |
| 461 | return -1; |
| 462 | } |
| 463 | |
| 464 | int A2DP_GetVariableBitRateSupportAac(const uint8_t* p_codec_info) { |
| 465 | tA2DP_AAC_CIE aac_cie; |
| 466 | |
| 467 | // Check whether the codec info contains valid data |
| 468 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 469 | if (a2dp_status != A2DP_SUCCESS) { |
| 470 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 471 | a2dp_status); |
| 472 | return -1; |
| 473 | } |
| 474 | |
| 475 | switch (aac_cie.variableBitRateSupport) { |
| 476 | case A2DP_AAC_VARIABLE_BIT_RATE_ENABLED: |
| 477 | case A2DP_AAC_VARIABLE_BIT_RATE_DISABLED: |
| 478 | return aac_cie.variableBitRateSupport; |
| 479 | default: |
| 480 | break; |
| 481 | } |
| 482 | |
| 483 | return -1; |
| 484 | } |
| 485 | |
| 486 | int A2DP_GetBitRateAac(const uint8_t* p_codec_info) { |
| 487 | tA2DP_AAC_CIE aac_cie; |
| 488 | |
| 489 | // Check whether the codec info contains valid data |
| 490 | tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false); |
| 491 | if (a2dp_status != A2DP_SUCCESS) { |
| 492 | LOG_ERROR(LOG_TAG, "%s: cannot decode codec information: %d", __func__, |
| 493 | a2dp_status); |
| 494 | return -1; |
| 495 | } |
| 496 | |
| 497 | return aac_cie.bitRate; |
| 498 | } |
| 499 | |
| 500 | bool A2DP_GetPacketTimestampAac(const uint8_t* p_codec_info, |
| 501 | const uint8_t* p_data, uint32_t* p_timestamp) { |
| 502 | // TODO: Is this function really codec-specific? |
| 503 | *p_timestamp = *(const uint32_t*)p_data; |
| 504 | return true; |
| 505 | } |
| 506 | |
| 507 | bool A2DP_BuildCodecHeaderAac(UNUSED_ATTR const uint8_t* p_codec_info, |
| 508 | UNUSED_ATTR BT_HDR* p_buf, |
| 509 | UNUSED_ATTR uint16_t frames_per_packet) { |
| 510 | return true; |
| 511 | } |
| 512 | |
| 513 | void A2DP_DumpCodecInfoAac(const uint8_t* p_codec_info) { |
| 514 | tA2DP_STATUS a2dp_status; |
| 515 | tA2DP_AAC_CIE aac_cie; |
| 516 | |
| 517 | LOG_DEBUG(LOG_TAG, "%s", __func__); |
| 518 | |
| 519 | a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, true); |
| 520 | if (a2dp_status != A2DP_SUCCESS) { |
| 521 | LOG_ERROR(LOG_TAG, "%s: A2DP_ParseInfoAac fail:%d", __func__, a2dp_status); |
| 522 | return; |
| 523 | } |
| 524 | |
| 525 | LOG_DEBUG(LOG_TAG, "\tobjectType: 0x%x", aac_cie.objectType); |
| 526 | if (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG2_LC) { |
| 527 | LOG_DEBUG(LOG_TAG, "\tobjectType: (MPEG-2 AAC LC)"); |
| 528 | } |
| 529 | if (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_LC) { |
| 530 | LOG_DEBUG(LOG_TAG, "\tobjectType: (MPEG-4 AAC LC)"); |
| 531 | } |
| 532 | if (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_LTP) { |
| 533 | LOG_DEBUG(LOG_TAG, "\tobjectType: (MPEG-4 AAC LTP)"); |
| 534 | } |
| 535 | if (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_SCALABLE) { |
| 536 | LOG_DEBUG(LOG_TAG, "\tobjectType: (MPEG-4 AAC Scalable)"); |
| 537 | } |
| 538 | |
| 539 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: 0x%x", aac_cie.sampleRate); |
| 540 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_8000) { |
| 541 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (8000)"); |
| 542 | } |
| 543 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_11025) { |
| 544 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (11025)"); |
| 545 | } |
| 546 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_12000) { |
| 547 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (12000)"); |
| 548 | } |
| 549 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_16000) { |
| 550 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (16000)"); |
| 551 | } |
| 552 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_22050) { |
| 553 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (22050)"); |
| 554 | } |
| 555 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_24000) { |
| 556 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (24000)"); |
| 557 | } |
| 558 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_32000) { |
| 559 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (32000)"); |
| 560 | } |
| 561 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 562 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (44100)"); |
| 563 | } |
| 564 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 565 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (48000)"); |
| 566 | } |
| 567 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_64000) { |
| 568 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (64000)"); |
| 569 | } |
| 570 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 571 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (88200)"); |
| 572 | } |
| 573 | if (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 574 | LOG_DEBUG(LOG_TAG, "\tsamp_freq: (96000)"); |
| 575 | } |
| 576 | |
| 577 | LOG_DEBUG(LOG_TAG, "\tch_mode: 0x%x", aac_cie.channelMode); |
| 578 | if (aac_cie.channelMode == A2DP_AAC_CHANNEL_MODE_MONO) { |
| 579 | LOG_DEBUG(LOG_TAG, "\tch_mode: (Mono)"); |
| 580 | } |
| 581 | if (aac_cie.channelMode == A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 582 | LOG_DEBUG(LOG_TAG, "\tch_mode: (Stereo)"); |
| 583 | } |
| 584 | |
| 585 | LOG_DEBUG(LOG_TAG, "\tvariableBitRateSupport: %s", |
| 586 | (aac_cie.variableBitRateSupport != 0) ? "true" : "false"); |
| 587 | |
| 588 | LOG_DEBUG(LOG_TAG, "\tbitRate: %u", aac_cie.bitRate); |
| 589 | } |
| 590 | |
| 591 | const tA2DP_ENCODER_INTERFACE* A2DP_GetEncoderInterfaceAac( |
| 592 | const uint8_t* p_codec_info) { |
| 593 | if (!A2DP_IsSourceCodecValidAac(p_codec_info)) return NULL; |
| 594 | |
| 595 | return &a2dp_encoder_interface_aac; |
| 596 | } |
| 597 | |
| 598 | bool A2DP_AdjustCodecAac(uint8_t* p_codec_info) { |
| 599 | tA2DP_AAC_CIE cfg_cie; |
| 600 | |
| 601 | // Nothing to do: just verify the codec info is valid |
| 602 | if (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) != A2DP_SUCCESS) |
| 603 | return false; |
| 604 | |
| 605 | return true; |
| 606 | } |
| 607 | |
| 608 | btav_a2dp_codec_index_t A2DP_SourceCodecIndexAac( |
| 609 | UNUSED_ATTR const uint8_t* p_codec_info) { |
| 610 | return BTAV_A2DP_CODEC_INDEX_SOURCE_AAC; |
| 611 | } |
| 612 | |
| 613 | const char* A2DP_CodecIndexStrAac(void) { return "AAC"; } |
| 614 | |
| 615 | bool A2DP_InitCodecConfigAac(tAVDT_CFG* p_cfg) { |
| 616 | if (A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &a2dp_aac_caps, |
| 617 | p_cfg->codec_info) != A2DP_SUCCESS) { |
| 618 | return false; |
| 619 | } |
| 620 | |
| 621 | #if (BTA_AV_CO_CP_SCMS_T == TRUE) |
| 622 | /* Content protection info - support SCMS-T */ |
| 623 | uint8_t* p = p_cfg->protect_info; |
| 624 | *p++ = AVDT_CP_LOSC; |
| 625 | UINT16_TO_STREAM(p, AVDT_CP_SCMS_T_ID); |
| 626 | p_cfg->num_protect = 1; |
| 627 | #endif |
| 628 | |
| 629 | return true; |
| 630 | } |
| 631 | |
| 632 | UNUSED_ATTR static void build_codec_config(const tA2DP_AAC_CIE& config_cie, |
| 633 | btav_a2dp_codec_config_t* result) { |
| 634 | if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) |
| 635 | result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 636 | if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) |
| 637 | result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 638 | if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) |
| 639 | result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 640 | if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) |
| 641 | result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 642 | |
| 643 | result->bits_per_sample = config_cie.bits_per_sample; |
| 644 | |
| 645 | if (config_cie.channelMode & A2DP_AAC_CHANNEL_MODE_MONO) |
| 646 | result->channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 647 | if (config_cie.channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 648 | result->channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 649 | } |
| 650 | } |
| 651 | |
Pavlin Radoslavov | a6ba5ac | 2017-01-31 20:51:06 -0800 | [diff] [blame^] | 652 | A2dpCodecConfigAac::A2dpCodecConfigAac( |
| 653 | btav_a2dp_codec_priority_t codec_priority) |
| 654 | : A2dpCodecConfig(BTAV_A2DP_CODEC_INDEX_SOURCE_AAC, "AAC", codec_priority) { |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 655 | // Compute the local capability |
| 656 | if (a2dp_aac_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 657 | codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 658 | } |
| 659 | if (a2dp_aac_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 660 | codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 661 | } |
| 662 | if (a2dp_aac_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 663 | codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 664 | } |
| 665 | if (a2dp_aac_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 666 | codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 667 | } |
| 668 | codec_local_capability_.bits_per_sample = a2dp_aac_caps.bits_per_sample; |
| 669 | if (a2dp_aac_caps.channelMode & A2DP_AAC_CHANNEL_MODE_MONO) { |
| 670 | codec_local_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 671 | } |
| 672 | if (a2dp_aac_caps.channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 673 | codec_local_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 674 | } |
| 675 | } |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 676 | |
| 677 | A2dpCodecConfigAac::~A2dpCodecConfigAac() {} |
| 678 | |
| 679 | bool A2dpCodecConfigAac::init() { |
| 680 | if (!isValid()) return false; |
| 681 | |
| 682 | // Load the encoder |
| 683 | if (!A2DP_LoadEncoderAac()) { |
| 684 | LOG_ERROR(LOG_TAG, "%s: cannot load the encoder", __func__); |
| 685 | return false; |
| 686 | } |
| 687 | |
| 688 | return true; |
| 689 | } |
| 690 | |
| 691 | // |
| 692 | // Selects the best sample rate from |sampleRate|. |
| 693 | // The result is stored in |p_result| and |p_codec_config|. |
| 694 | // Returns true if a selection was made, otherwise false. |
| 695 | // |
| 696 | static bool select_best_sample_rate(uint16_t sampleRate, |
| 697 | tA2DP_AAC_CIE* p_result, |
| 698 | btav_a2dp_codec_config_t* p_codec_config) { |
| 699 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 700 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_96000; |
| 701 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 702 | return true; |
| 703 | } |
| 704 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 705 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_88200; |
| 706 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 707 | return true; |
| 708 | } |
| 709 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 710 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_48000; |
| 711 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 712 | return true; |
| 713 | } |
| 714 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 715 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_44100; |
| 716 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 717 | return true; |
| 718 | } |
| 719 | return false; |
| 720 | } |
| 721 | |
| 722 | // |
| 723 | // Selects the audio sample rate from |p_codec_audio_config|. |
| 724 | // |sampleRate| contains the capability. |
| 725 | // The result is stored in |p_result| and |p_codec_config|. |
| 726 | // Returns true if a selection was made, otherwise false. |
| 727 | // |
| 728 | static bool select_audio_sample_rate( |
| 729 | const btav_a2dp_codec_config_t* p_codec_audio_config, uint16_t sampleRate, |
| 730 | tA2DP_AAC_CIE* p_result, btav_a2dp_codec_config_t* p_codec_config) { |
| 731 | switch (p_codec_audio_config->sample_rate) { |
| 732 | case BTAV_A2DP_CODEC_SAMPLE_RATE_44100: |
| 733 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 734 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_44100; |
| 735 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 736 | return true; |
| 737 | } |
| 738 | break; |
| 739 | case BTAV_A2DP_CODEC_SAMPLE_RATE_48000: |
| 740 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 741 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_48000; |
| 742 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 743 | return true; |
| 744 | } |
| 745 | break; |
| 746 | case BTAV_A2DP_CODEC_SAMPLE_RATE_88200: |
| 747 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 748 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_88200; |
| 749 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 750 | return true; |
| 751 | } |
| 752 | break; |
| 753 | case BTAV_A2DP_CODEC_SAMPLE_RATE_96000: |
| 754 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 755 | p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_96000; |
| 756 | p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 757 | return true; |
| 758 | } |
| 759 | break; |
| 760 | case BTAV_A2DP_CODEC_SAMPLE_RATE_176400: |
| 761 | case BTAV_A2DP_CODEC_SAMPLE_RATE_192000: |
| 762 | case BTAV_A2DP_CODEC_SAMPLE_RATE_NONE: |
| 763 | break; |
| 764 | } |
| 765 | return false; |
| 766 | } |
| 767 | |
| 768 | // |
| 769 | // Selects the best bits per sample from |bits_per_sample|. |
| 770 | // |bits_per_sample| contains the capability. |
| 771 | // The result is stored in |p_result| and |p_codec_config|. |
| 772 | // Returns true if a selection was made, otherwise false. |
| 773 | // |
| 774 | static bool select_best_bits_per_sample( |
| 775 | btav_a2dp_codec_bits_per_sample_t bits_per_sample, tA2DP_AAC_CIE* p_result, |
| 776 | btav_a2dp_codec_config_t* p_codec_config) { |
| 777 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) { |
| 778 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32; |
| 779 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32; |
| 780 | return true; |
| 781 | } |
| 782 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) { |
| 783 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24; |
| 784 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24; |
| 785 | return true; |
| 786 | } |
| 787 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) { |
| 788 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16; |
| 789 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16; |
| 790 | return true; |
| 791 | } |
| 792 | return false; |
| 793 | } |
| 794 | |
| 795 | // |
| 796 | // Selects the audio bits per sample from |p_codec_audio_config|. |
| 797 | // |bits_per_sample| contains the capability. |
| 798 | // The result is stored in |p_result| and |p_codec_config|. |
| 799 | // Returns true if a selection was made, otherwise false. |
| 800 | // |
| 801 | static bool select_audio_bits_per_sample( |
| 802 | const btav_a2dp_codec_config_t* p_codec_audio_config, |
| 803 | btav_a2dp_codec_bits_per_sample_t bits_per_sample, tA2DP_AAC_CIE* p_result, |
| 804 | btav_a2dp_codec_config_t* p_codec_config) { |
| 805 | switch (p_codec_audio_config->bits_per_sample) { |
| 806 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16: |
| 807 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) { |
| 808 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16; |
| 809 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16; |
| 810 | return true; |
| 811 | } |
| 812 | break; |
| 813 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24: |
| 814 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) { |
| 815 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24; |
| 816 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24; |
| 817 | return true; |
| 818 | } |
| 819 | break; |
| 820 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32: |
| 821 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) { |
| 822 | p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32; |
| 823 | p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32; |
| 824 | return true; |
| 825 | } |
| 826 | break; |
| 827 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE: |
| 828 | break; |
| 829 | } |
| 830 | return false; |
| 831 | } |
| 832 | |
| 833 | // |
| 834 | // Selects the best channel mode from |channelMode|. |
| 835 | // The result is stored in |p_result| and |p_codec_config|. |
| 836 | // Returns true if a selection was made, otherwise false. |
| 837 | // |
| 838 | static bool select_best_channel_mode(uint8_t channelMode, |
| 839 | tA2DP_AAC_CIE* p_result, |
| 840 | btav_a2dp_codec_config_t* p_codec_config) { |
| 841 | if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 842 | p_result->channelMode = A2DP_AAC_CHANNEL_MODE_STEREO; |
| 843 | p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 844 | return true; |
| 845 | } |
| 846 | if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) { |
| 847 | p_result->channelMode = A2DP_AAC_CHANNEL_MODE_MONO; |
| 848 | p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 849 | return true; |
| 850 | } |
| 851 | return false; |
| 852 | } |
| 853 | |
| 854 | // |
| 855 | // Selects the audio channel mode from |p_codec_audio_config|. |
| 856 | // |channelMode| contains the capability. |
| 857 | // The result is stored in |p_result| and |p_codec_config|. |
| 858 | // Returns true if a selection was made, otherwise false. |
| 859 | // |
| 860 | static bool select_audio_channel_mode( |
| 861 | const btav_a2dp_codec_config_t* p_codec_audio_config, uint8_t channelMode, |
| 862 | tA2DP_AAC_CIE* p_result, btav_a2dp_codec_config_t* p_codec_config) { |
| 863 | switch (p_codec_audio_config->channel_mode) { |
| 864 | case BTAV_A2DP_CODEC_CHANNEL_MODE_MONO: |
| 865 | if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) { |
| 866 | p_result->channelMode = A2DP_AAC_CHANNEL_MODE_MONO; |
| 867 | p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 868 | return true; |
| 869 | } |
| 870 | break; |
| 871 | case BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO: |
| 872 | if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 873 | p_result->channelMode = A2DP_AAC_CHANNEL_MODE_STEREO; |
| 874 | p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 875 | return true; |
| 876 | } |
| 877 | break; |
| 878 | case BTAV_A2DP_CODEC_CHANNEL_MODE_NONE: |
| 879 | break; |
| 880 | } |
| 881 | |
| 882 | return false; |
| 883 | } |
| 884 | |
| 885 | bool A2dpCodecConfigAac::setCodecConfig(const uint8_t* p_peer_codec_info, |
| 886 | bool is_capability, |
| 887 | uint8_t* p_result_codec_config) { |
| 888 | std::lock_guard<std::recursive_mutex> lock(codec_mutex_); |
| 889 | tA2DP_AAC_CIE sink_info_cie; |
| 890 | tA2DP_AAC_CIE result_config_cie; |
| 891 | uint8_t channelMode; |
| 892 | uint16_t sampleRate; |
| 893 | btav_a2dp_codec_bits_per_sample_t bits_per_sample; |
| 894 | |
| 895 | // Save the internal state |
| 896 | btav_a2dp_codec_config_t saved_codec_config = codec_config_; |
| 897 | btav_a2dp_codec_config_t saved_codec_capability = codec_capability_; |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 898 | btav_a2dp_codec_config_t saved_codec_selectable_capability = |
| 899 | codec_selectable_capability_; |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 900 | btav_a2dp_codec_config_t saved_codec_user_config = codec_user_config_; |
| 901 | btav_a2dp_codec_config_t saved_codec_audio_config = codec_audio_config_; |
| 902 | uint8_t saved_ota_codec_config[AVDT_CODEC_SIZE]; |
| 903 | uint8_t saved_ota_codec_peer_capability[AVDT_CODEC_SIZE]; |
| 904 | uint8_t saved_ota_codec_peer_config[AVDT_CODEC_SIZE]; |
| 905 | memcpy(saved_ota_codec_config, ota_codec_config_, sizeof(ota_codec_config_)); |
| 906 | memcpy(saved_ota_codec_peer_capability, ota_codec_peer_capability_, |
| 907 | sizeof(ota_codec_peer_capability_)); |
| 908 | memcpy(saved_ota_codec_peer_config, ota_codec_peer_config_, |
| 909 | sizeof(ota_codec_peer_config_)); |
| 910 | |
| 911 | tA2DP_STATUS status = |
| 912 | A2DP_ParseInfoAac(&sink_info_cie, p_peer_codec_info, is_capability); |
| 913 | if (status != A2DP_SUCCESS) { |
| 914 | LOG_ERROR(LOG_TAG, "%s: can't parse peer's Sink capabilities: error = %d", |
| 915 | __func__, status); |
| 916 | goto fail; |
| 917 | } |
| 918 | |
| 919 | // |
| 920 | // Build the preferred configuration |
| 921 | // |
| 922 | memset(&result_config_cie, 0, sizeof(result_config_cie)); |
| 923 | |
| 924 | // NOTE: Always assign the Object Type and Variable Bit Rate Support. |
| 925 | result_config_cie.objectType = a2dp_aac_caps.objectType; |
| 926 | result_config_cie.variableBitRateSupport = |
| 927 | a2dp_aac_caps.variableBitRateSupport; |
| 928 | |
| 929 | // Set the bit rate to the smaller of the local and peer bit rate |
| 930 | // However, make sure the bit rate doesn't go beyond a certain threshold |
| 931 | result_config_cie.bitRate = |
| 932 | std::min(a2dp_aac_caps.bitRate, sink_info_cie.bitRate); |
| 933 | result_config_cie.bitRate = std::max( |
| 934 | result_config_cie.bitRate, static_cast<uint32_t>(A2DP_AAC_MIN_BITRATE)); |
| 935 | |
| 936 | // |
| 937 | // Select the sample frequency |
| 938 | // |
| 939 | sampleRate = a2dp_aac_caps.sampleRate & sink_info_cie.sampleRate; |
| 940 | codec_config_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE; |
| 941 | switch (codec_user_config_.sample_rate) { |
| 942 | case BTAV_A2DP_CODEC_SAMPLE_RATE_44100: |
| 943 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 944 | result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_44100; |
| 945 | codec_capability_.sample_rate = codec_user_config_.sample_rate; |
| 946 | codec_config_.sample_rate = codec_user_config_.sample_rate; |
| 947 | } |
| 948 | break; |
| 949 | case BTAV_A2DP_CODEC_SAMPLE_RATE_48000: |
| 950 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 951 | result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_48000; |
| 952 | codec_capability_.sample_rate = codec_user_config_.sample_rate; |
| 953 | codec_config_.sample_rate = codec_user_config_.sample_rate; |
| 954 | } |
| 955 | break; |
| 956 | case BTAV_A2DP_CODEC_SAMPLE_RATE_88200: |
| 957 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 958 | result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_88200; |
| 959 | codec_capability_.sample_rate = codec_user_config_.sample_rate; |
| 960 | codec_config_.sample_rate = codec_user_config_.sample_rate; |
| 961 | } |
| 962 | break; |
| 963 | case BTAV_A2DP_CODEC_SAMPLE_RATE_96000: |
| 964 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 965 | result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_96000; |
| 966 | codec_capability_.sample_rate = codec_user_config_.sample_rate; |
| 967 | codec_config_.sample_rate = codec_user_config_.sample_rate; |
| 968 | } |
| 969 | break; |
| 970 | case BTAV_A2DP_CODEC_SAMPLE_RATE_176400: |
| 971 | case BTAV_A2DP_CODEC_SAMPLE_RATE_192000: |
| 972 | case BTAV_A2DP_CODEC_SAMPLE_RATE_NONE: |
| 973 | codec_capability_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE; |
| 974 | codec_config_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE; |
| 975 | break; |
| 976 | } |
| 977 | |
| 978 | // Select the sample frequency if there is no user preference |
| 979 | do { |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 980 | // Compute the selectable capability |
| 981 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) { |
| 982 | codec_selectable_capability_.sample_rate |= |
| 983 | BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 984 | } |
| 985 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) { |
| 986 | codec_selectable_capability_.sample_rate |= |
| 987 | BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 988 | } |
| 989 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) { |
| 990 | codec_selectable_capability_.sample_rate |= |
| 991 | BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 992 | } |
| 993 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) { |
| 994 | codec_selectable_capability_.sample_rate |= |
| 995 | BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 996 | } |
| 997 | |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 998 | if (codec_config_.sample_rate != BTAV_A2DP_CODEC_SAMPLE_RATE_NONE) break; |
| 999 | |
| 1000 | // Compute the common capability |
| 1001 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) |
| 1002 | codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100; |
| 1003 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) |
| 1004 | codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000; |
| 1005 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) |
| 1006 | codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200; |
| 1007 | if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) |
| 1008 | codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000; |
| 1009 | |
| 1010 | // No user preference - try the codec audio config |
| 1011 | if (select_audio_sample_rate(&codec_audio_config_, sampleRate, |
| 1012 | &result_config_cie, &codec_config_)) { |
| 1013 | break; |
| 1014 | } |
| 1015 | |
| 1016 | // No user preference - try the default config |
| 1017 | if (select_best_sample_rate( |
| 1018 | a2dp_aac_default_config.sampleRate & sink_info_cie.sampleRate, |
| 1019 | &result_config_cie, &codec_config_)) { |
| 1020 | break; |
| 1021 | } |
| 1022 | |
| 1023 | // No user preference - use the best match |
| 1024 | if (select_best_sample_rate(sampleRate, &result_config_cie, |
| 1025 | &codec_config_)) { |
| 1026 | break; |
| 1027 | } |
| 1028 | } while (false); |
| 1029 | if (codec_config_.sample_rate == BTAV_A2DP_CODEC_SAMPLE_RATE_NONE) { |
| 1030 | LOG_ERROR(LOG_TAG, |
| 1031 | "%s: cannot match sample frequency: source caps = 0x%x " |
| 1032 | "sink info = 0x%x", |
| 1033 | __func__, a2dp_aac_caps.sampleRate, sink_info_cie.sampleRate); |
| 1034 | goto fail; |
| 1035 | } |
| 1036 | |
| 1037 | // |
| 1038 | // Select the bits per sample |
| 1039 | // |
| 1040 | // NOTE: this information is NOT included in the AAC A2DP codec description |
| 1041 | // that is sent OTA. |
| 1042 | bits_per_sample = a2dp_aac_caps.bits_per_sample; |
| 1043 | codec_config_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE; |
| 1044 | switch (codec_user_config_.bits_per_sample) { |
| 1045 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16: |
| 1046 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) { |
| 1047 | result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1048 | codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1049 | codec_config_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1050 | } |
| 1051 | break; |
| 1052 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24: |
| 1053 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) { |
| 1054 | result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1055 | codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1056 | codec_config_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1057 | } |
| 1058 | break; |
| 1059 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32: |
| 1060 | if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) { |
| 1061 | result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1062 | codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1063 | codec_config_.bits_per_sample = codec_user_config_.bits_per_sample; |
| 1064 | } |
| 1065 | break; |
| 1066 | case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE: |
| 1067 | result_config_cie.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE; |
| 1068 | codec_capability_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE; |
| 1069 | codec_config_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE; |
| 1070 | break; |
| 1071 | } |
| 1072 | |
| 1073 | // Select the bits per sample if there is no user preference |
| 1074 | do { |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 1075 | // Compute the selectable capability |
| 1076 | codec_selectable_capability_.bits_per_sample = |
| 1077 | a2dp_aac_caps.bits_per_sample; |
| 1078 | |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 1079 | if (codec_config_.bits_per_sample != BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE) |
| 1080 | break; |
| 1081 | |
| 1082 | // Compute the common capability |
| 1083 | codec_capability_.bits_per_sample = bits_per_sample; |
| 1084 | |
| 1085 | // No user preference - the the codec audio config |
| 1086 | if (select_audio_bits_per_sample(&codec_audio_config_, |
| 1087 | a2dp_aac_caps.bits_per_sample, |
| 1088 | &result_config_cie, &codec_config_)) { |
| 1089 | break; |
| 1090 | } |
| 1091 | |
| 1092 | // No user preference - try the default config |
| 1093 | if (select_best_bits_per_sample(a2dp_aac_default_config.bits_per_sample, |
| 1094 | &result_config_cie, &codec_config_)) { |
| 1095 | break; |
| 1096 | } |
| 1097 | |
| 1098 | // No user preference - use the best match |
| 1099 | if (select_best_bits_per_sample(a2dp_aac_caps.bits_per_sample, |
| 1100 | &result_config_cie, &codec_config_)) { |
| 1101 | break; |
| 1102 | } |
| 1103 | } while (false); |
| 1104 | if (codec_config_.bits_per_sample == BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE) { |
| 1105 | LOG_ERROR(LOG_TAG, |
| 1106 | "%s: cannot match bits per sample: default = 0x%x " |
| 1107 | "user preference = 0x%x", |
| 1108 | __func__, a2dp_aac_default_config.bits_per_sample, |
| 1109 | codec_user_config_.bits_per_sample); |
| 1110 | goto fail; |
| 1111 | } |
| 1112 | |
| 1113 | // |
| 1114 | // Select the channel mode |
| 1115 | // |
| 1116 | channelMode = a2dp_aac_caps.channelMode & sink_info_cie.channelMode; |
| 1117 | codec_config_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE; |
| 1118 | switch (codec_user_config_.channel_mode) { |
| 1119 | case BTAV_A2DP_CODEC_CHANNEL_MODE_MONO: |
| 1120 | if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) { |
| 1121 | result_config_cie.channelMode = A2DP_AAC_CHANNEL_MODE_MONO; |
| 1122 | codec_capability_.channel_mode = codec_user_config_.channel_mode; |
| 1123 | codec_config_.channel_mode = codec_user_config_.channel_mode; |
| 1124 | } |
| 1125 | break; |
| 1126 | case BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO: |
| 1127 | if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 1128 | result_config_cie.channelMode = A2DP_AAC_CHANNEL_MODE_STEREO; |
| 1129 | codec_capability_.channel_mode = codec_user_config_.channel_mode; |
| 1130 | codec_config_.channel_mode = codec_user_config_.channel_mode; |
| 1131 | } |
| 1132 | break; |
| 1133 | case BTAV_A2DP_CODEC_CHANNEL_MODE_NONE: |
| 1134 | codec_capability_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE; |
| 1135 | codec_config_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE; |
| 1136 | break; |
| 1137 | } |
| 1138 | |
| 1139 | // Select the channel mode if there is no user preference |
| 1140 | do { |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 1141 | // Compute the selectable capability |
| 1142 | if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) { |
| 1143 | codec_selectable_capability_.channel_mode |= |
| 1144 | BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 1145 | } |
| 1146 | if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 1147 | codec_selectable_capability_.channel_mode |= |
| 1148 | BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 1149 | } |
| 1150 | |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 1151 | if (codec_config_.channel_mode != BTAV_A2DP_CODEC_CHANNEL_MODE_NONE) break; |
| 1152 | |
| 1153 | // Compute the common capability |
| 1154 | if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) |
| 1155 | codec_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO; |
| 1156 | if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) { |
| 1157 | codec_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO; |
| 1158 | } |
| 1159 | |
| 1160 | // No user preference - try the codec audio config |
| 1161 | if (select_audio_channel_mode(&codec_audio_config_, channelMode, |
| 1162 | &result_config_cie, &codec_config_)) { |
| 1163 | break; |
| 1164 | } |
| 1165 | |
| 1166 | // No user preference - try the default config |
| 1167 | if (select_best_channel_mode( |
| 1168 | a2dp_aac_default_config.channelMode & sink_info_cie.channelMode, |
| 1169 | &result_config_cie, &codec_config_)) { |
| 1170 | break; |
| 1171 | } |
| 1172 | |
| 1173 | // No user preference - use the best match |
| 1174 | if (select_best_channel_mode(channelMode, &result_config_cie, |
| 1175 | &codec_config_)) { |
| 1176 | break; |
| 1177 | } |
| 1178 | } while (false); |
| 1179 | if (codec_config_.channel_mode == BTAV_A2DP_CODEC_CHANNEL_MODE_NONE) { |
| 1180 | LOG_ERROR(LOG_TAG, |
| 1181 | "%s: cannot match channel mode: source caps = 0x%x " |
| 1182 | "sink info = 0x%x", |
| 1183 | __func__, a2dp_aac_caps.channelMode, sink_info_cie.channelMode); |
| 1184 | goto fail; |
| 1185 | } |
| 1186 | |
| 1187 | if (A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &result_config_cie, |
| 1188 | p_result_codec_config) != A2DP_SUCCESS) { |
| 1189 | goto fail; |
| 1190 | } |
| 1191 | |
| 1192 | // |
| 1193 | // Copy the codec-specific fields if they are not zero |
| 1194 | // |
| 1195 | if (codec_user_config_.codec_specific_1 != 0) |
| 1196 | codec_config_.codec_specific_1 = codec_user_config_.codec_specific_1; |
| 1197 | if (codec_user_config_.codec_specific_2 != 0) |
| 1198 | codec_config_.codec_specific_2 = codec_user_config_.codec_specific_2; |
| 1199 | if (codec_user_config_.codec_specific_3 != 0) |
| 1200 | codec_config_.codec_specific_3 = codec_user_config_.codec_specific_3; |
| 1201 | if (codec_user_config_.codec_specific_4 != 0) |
| 1202 | codec_config_.codec_specific_4 = codec_user_config_.codec_specific_4; |
| 1203 | |
| 1204 | // Create a local copy of the peer codec capability, and the |
| 1205 | // result codec config. |
| 1206 | if (is_capability) { |
| 1207 | status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &sink_info_cie, |
| 1208 | ota_codec_peer_capability_); |
| 1209 | } else { |
| 1210 | status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &sink_info_cie, |
| 1211 | ota_codec_peer_config_); |
| 1212 | } |
| 1213 | CHECK(status == A2DP_SUCCESS); |
| 1214 | status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &result_config_cie, |
| 1215 | ota_codec_config_); |
| 1216 | CHECK(status == A2DP_SUCCESS); |
| 1217 | return true; |
| 1218 | |
| 1219 | fail: |
| 1220 | // Restore the internal state |
| 1221 | codec_config_ = saved_codec_config; |
| 1222 | codec_capability_ = saved_codec_capability; |
Pavlin Radoslavov | 494e53e | 2017-01-25 17:00:23 -0800 | [diff] [blame] | 1223 | codec_selectable_capability_ = saved_codec_selectable_capability; |
Pavlin Radoslavov | d5f4960 | 2017-01-03 16:53:18 -0800 | [diff] [blame] | 1224 | codec_user_config_ = saved_codec_user_config; |
| 1225 | codec_audio_config_ = saved_codec_audio_config; |
| 1226 | memcpy(ota_codec_config_, saved_ota_codec_config, sizeof(ota_codec_config_)); |
| 1227 | memcpy(ota_codec_peer_capability_, saved_ota_codec_peer_capability, |
| 1228 | sizeof(ota_codec_peer_capability_)); |
| 1229 | memcpy(ota_codec_peer_config_, saved_ota_codec_peer_config, |
| 1230 | sizeof(ota_codec_peer_config_)); |
| 1231 | return false; |
| 1232 | } |