1 /*
2 * Copyright 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 #define LOG_TAG "a2dp_vendor_aptx_hd_encoder"
18
19 #include "a2dp_vendor_aptx_hd_encoder.h"
20
21 #include <dlfcn.h>
22 #include <inttypes.h>
23 #include <stdio.h>
24 #include <string.h>
25
26 #include "a2dp_vendor.h"
27 #include "a2dp_vendor_aptx_hd.h"
28 #include "bt_common.h"
29 #include "common/time_util.h"
30 #include "osi/include/log.h"
31 #include "osi/include/osi.h"
32
33 //
34 // Encoder for aptX-HD Source Codec
35 //
36
37 //
38 // The aptX-HD encoder shared library, and the functions to use
39 //
40 static const char* APTX_HD_ENCODER_LIB_NAME = "libaptXHD_encoder.so";
41 static void* aptx_hd_encoder_lib_handle = NULL;
42
43 static const char* APTX_HD_ENCODER_INIT_NAME = "aptxhdbtenc_init";
44 typedef int (*tAPTX_HD_ENCODER_INIT)(void* state, short endian);
45
46 static const char* APTX_HD_ENCODER_ENCODE_STEREO_NAME =
47 "aptxhdbtenc_encodestereo";
48 typedef int (*tAPTX_HD_ENCODER_ENCODE_STEREO)(void* state, void* pcmL,
49 void* pcmR, void* buffer);
50
51 static const char* APTX_HD_ENCODER_SIZEOF_PARAMS_NAME = "SizeofAptxhdbtenc";
52 typedef int (*tAPTX_HD_ENCODER_SIZEOF_PARAMS)(void);
53
54 static tAPTX_HD_ENCODER_INIT aptx_hd_encoder_init_func;
55 static tAPTX_HD_ENCODER_ENCODE_STEREO aptx_hd_encoder_encode_stereo_func;
56 static tAPTX_HD_ENCODER_SIZEOF_PARAMS aptx_hd_encoder_sizeof_params_func;
57
58 // offset
59 #if (BTA_AV_CO_CP_SCMS_T == TRUE)
60 #define A2DP_APTX_HD_OFFSET (AVDT_MEDIA_OFFSET + 1)
61 #else
62 #define A2DP_APTX_HD_OFFSET AVDT_MEDIA_OFFSET
63 #endif
64
65 #define A2DP_APTX_HD_MAX_PCM_BYTES_PER_READ 4096
66
67 typedef struct {
68 uint64_t sleep_time_ns;
69 uint32_t pcm_reads;
70 uint32_t pcm_bytes_per_read;
71 uint32_t aptx_hd_bytes;
72 uint32_t frame_size_counter;
73 } tAPTX_HD_FRAMING_PARAMS;
74
75 typedef struct {
76 uint64_t session_start_us;
77
78 size_t media_read_total_expected_packets;
79 size_t media_read_total_expected_reads_count;
80 size_t media_read_total_expected_read_bytes;
81
82 size_t media_read_total_dropped_packets;
83 size_t media_read_total_actual_reads_count;
84 size_t media_read_total_actual_read_bytes;
85 } a2dp_aptx_hd_encoder_stats_t;
86
87 typedef struct {
88 a2dp_source_read_callback_t read_callback;
89 a2dp_source_enqueue_callback_t enqueue_callback;
90
91 bool use_SCMS_T;
92 bool is_peer_edr; // True if the peer device supports EDR
93 bool peer_supports_3mbps; // True if the peer device supports 3Mbps EDR
94 uint16_t peer_mtu; // MTU of the A2DP peer
95 uint32_t timestamp; // Timestamp for the A2DP frames
96
97 tA2DP_FEEDING_PARAMS feeding_params;
98 tAPTX_HD_FRAMING_PARAMS framing_params;
99 void* aptx_hd_encoder_state;
100 a2dp_aptx_hd_encoder_stats_t stats;
101 } tA2DP_APTX_HD_ENCODER_CB;
102
103 static tA2DP_APTX_HD_ENCODER_CB a2dp_aptx_hd_encoder_cb;
104
105 static void a2dp_vendor_aptx_hd_encoder_update(
106 uint16_t peer_mtu, A2dpCodecConfig* a2dp_codec_config,
107 bool* p_restart_input, bool* p_restart_output, bool* p_config_updated);
108 static void aptx_hd_init_framing_params(
109 tAPTX_HD_FRAMING_PARAMS* framing_params);
110 static void aptx_hd_update_framing_params(
111 tAPTX_HD_FRAMING_PARAMS* framing_params);
112 static size_t aptx_hd_encode_24bit(tAPTX_HD_FRAMING_PARAMS* framing_params,
113 size_t* data_out_index, uint32_t* data32_in,
114 uint8_t* data_out);
115
A2DP_VendorLoadEncoderAptxHd(void)116 bool A2DP_VendorLoadEncoderAptxHd(void) {
117 if (aptx_hd_encoder_lib_handle != NULL) return true; // Already loaded
118
119 // Open the encoder library
120 aptx_hd_encoder_lib_handle = dlopen(APTX_HD_ENCODER_LIB_NAME, RTLD_NOW);
121 if (aptx_hd_encoder_lib_handle == NULL) {
122 LOG_ERROR("%s: cannot open aptX-HD encoder library %s: %s", __func__,
123 APTX_HD_ENCODER_LIB_NAME, dlerror());
124 return false;
125 }
126
127 aptx_hd_encoder_init_func = (tAPTX_HD_ENCODER_INIT)dlsym(
128 aptx_hd_encoder_lib_handle, APTX_HD_ENCODER_INIT_NAME);
129 if (aptx_hd_encoder_init_func == NULL) {
130 LOG_ERROR("%s: cannot find function '%s' in the encoder library: %s",
131 __func__, APTX_HD_ENCODER_INIT_NAME, dlerror());
132 A2DP_VendorUnloadEncoderAptxHd();
133 return false;
134 }
135
136 aptx_hd_encoder_encode_stereo_func = (tAPTX_HD_ENCODER_ENCODE_STEREO)dlsym(
137 aptx_hd_encoder_lib_handle, APTX_HD_ENCODER_ENCODE_STEREO_NAME);
138 if (aptx_hd_encoder_encode_stereo_func == NULL) {
139 LOG_ERROR("%s: cannot find function '%s' in the encoder library: %s",
140 __func__, APTX_HD_ENCODER_ENCODE_STEREO_NAME, dlerror());
141 A2DP_VendorUnloadEncoderAptxHd();
142 return false;
143 }
144
145 aptx_hd_encoder_sizeof_params_func = (tAPTX_HD_ENCODER_SIZEOF_PARAMS)dlsym(
146 aptx_hd_encoder_lib_handle, APTX_HD_ENCODER_SIZEOF_PARAMS_NAME);
147 if (aptx_hd_encoder_sizeof_params_func == NULL) {
148 LOG_ERROR("%s: cannot find function '%s' in the encoder library: %s",
149 __func__, APTX_HD_ENCODER_SIZEOF_PARAMS_NAME, dlerror());
150 A2DP_VendorUnloadEncoderAptxHd();
151 return false;
152 }
153
154 return true;
155 }
156
A2DP_VendorUnloadEncoderAptxHd(void)157 void A2DP_VendorUnloadEncoderAptxHd(void) {
158 aptx_hd_encoder_init_func = NULL;
159 aptx_hd_encoder_encode_stereo_func = NULL;
160 aptx_hd_encoder_sizeof_params_func = NULL;
161
162 if (aptx_hd_encoder_lib_handle != NULL) {
163 dlclose(aptx_hd_encoder_lib_handle);
164 aptx_hd_encoder_lib_handle = NULL;
165 }
166 }
167
a2dp_vendor_aptx_hd_encoder_init(const tA2DP_ENCODER_INIT_PEER_PARAMS * p_peer_params,A2dpCodecConfig * a2dp_codec_config,a2dp_source_read_callback_t read_callback,a2dp_source_enqueue_callback_t enqueue_callback)168 void a2dp_vendor_aptx_hd_encoder_init(
169 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
170 A2dpCodecConfig* a2dp_codec_config,
171 a2dp_source_read_callback_t read_callback,
172 a2dp_source_enqueue_callback_t enqueue_callback) {
173 memset(&a2dp_aptx_hd_encoder_cb, 0, sizeof(a2dp_aptx_hd_encoder_cb));
174
175 a2dp_aptx_hd_encoder_cb.stats.session_start_us =
176 bluetooth::common::time_get_os_boottime_us();
177
178 a2dp_aptx_hd_encoder_cb.read_callback = read_callback;
179 a2dp_aptx_hd_encoder_cb.enqueue_callback = enqueue_callback;
180 a2dp_aptx_hd_encoder_cb.is_peer_edr = p_peer_params->is_peer_edr;
181 a2dp_aptx_hd_encoder_cb.peer_supports_3mbps =
182 p_peer_params->peer_supports_3mbps;
183 a2dp_aptx_hd_encoder_cb.peer_mtu = p_peer_params->peer_mtu;
184 a2dp_aptx_hd_encoder_cb.timestamp = 0;
185
186 /* aptX-HD encoder config */
187 a2dp_aptx_hd_encoder_cb.use_SCMS_T = false; // TODO: should be a parameter
188 #if (BTA_AV_CO_CP_SCMS_T == TRUE)
189 a2dp_aptx_hd_encoder_cb.use_SCMS_T = true;
190 #endif
191
192 a2dp_aptx_hd_encoder_cb.aptx_hd_encoder_state =
193 osi_malloc(aptx_hd_encoder_sizeof_params_func());
194 if (a2dp_aptx_hd_encoder_cb.aptx_hd_encoder_state != NULL) {
195 aptx_hd_encoder_init_func(a2dp_aptx_hd_encoder_cb.aptx_hd_encoder_state, 0);
196 } else {
197 LOG_ERROR("%s: Cannot allocate aptX-HD encoder state", __func__);
198 // TODO: Return an error?
199 }
200
201 // NOTE: Ignore the restart_input / restart_output flags - this initization
202 // happens when the connection is (re)started.
203 bool restart_input = false;
204 bool restart_output = false;
205 bool config_updated = false;
206 a2dp_vendor_aptx_hd_encoder_update(a2dp_aptx_hd_encoder_cb.peer_mtu,
207 a2dp_codec_config, &restart_input,
208 &restart_output, &config_updated);
209 }
210
updateEncoderUserConfig(const tA2DP_ENCODER_INIT_PEER_PARAMS * p_peer_params,bool * p_restart_input,bool * p_restart_output,bool * p_config_updated)211 bool A2dpCodecConfigAptxHd::updateEncoderUserConfig(
212 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, bool* p_restart_input,
213 bool* p_restart_output, bool* p_config_updated) {
214 a2dp_aptx_hd_encoder_cb.is_peer_edr = p_peer_params->is_peer_edr;
215 a2dp_aptx_hd_encoder_cb.peer_supports_3mbps =
216 p_peer_params->peer_supports_3mbps;
217 a2dp_aptx_hd_encoder_cb.peer_mtu = p_peer_params->peer_mtu;
218 a2dp_aptx_hd_encoder_cb.timestamp = 0;
219
220 if (a2dp_aptx_hd_encoder_cb.peer_mtu == 0) {
221 LOG_ERROR(
222 "%s: Cannot update the codec encoder for %s: "
223 "invalid peer MTU",
224 __func__, name().c_str());
225 return false;
226 }
227
228 a2dp_vendor_aptx_hd_encoder_update(a2dp_aptx_hd_encoder_cb.peer_mtu, this,
229 p_restart_input, p_restart_output,
230 p_config_updated);
231 return true;
232 }
233
234 // Update the A2DP aptX-HD encoder.
235 // |peer_mtu| is the peer MTU.
236 // |a2dp_codec_config| is the A2DP codec to use for the update.
a2dp_vendor_aptx_hd_encoder_update(uint16_t peer_mtu,A2dpCodecConfig * a2dp_codec_config,bool * p_restart_input,bool * p_restart_output,bool * p_config_updated)237 static void a2dp_vendor_aptx_hd_encoder_update(
238 uint16_t peer_mtu, A2dpCodecConfig* a2dp_codec_config,
239 bool* p_restart_input, bool* p_restart_output, bool* p_config_updated) {
240 uint8_t codec_info[AVDT_CODEC_SIZE];
241
242 *p_restart_input = false;
243 *p_restart_output = false;
244 *p_config_updated = false;
245 if (!a2dp_codec_config->copyOutOtaCodecConfig(codec_info)) {
246 LOG_ERROR(
247 "%s: Cannot update the codec encoder for %s: "
248 "invalid codec config",
249 __func__, a2dp_codec_config->name().c_str());
250 return;
251 }
252 const uint8_t* p_codec_info = codec_info;
253
254 // The feeding parameters
255 tA2DP_FEEDING_PARAMS* p_feeding_params =
256 &a2dp_aptx_hd_encoder_cb.feeding_params;
257 p_feeding_params->sample_rate =
258 A2DP_VendorGetTrackSampleRateAptxHd(p_codec_info);
259 p_feeding_params->bits_per_sample =
260 a2dp_codec_config->getAudioBitsPerSample();
261 p_feeding_params->channel_count =
262 A2DP_VendorGetTrackChannelCountAptxHd(p_codec_info);
263 LOG_INFO("%s: sample_rate=%u bits_per_sample=%u channel_count=%u", __func__,
264 p_feeding_params->sample_rate, p_feeding_params->bits_per_sample,
265 p_feeding_params->channel_count);
266 a2dp_vendor_aptx_hd_feeding_reset();
267 }
268
a2dp_vendor_aptx_hd_encoder_cleanup(void)269 void a2dp_vendor_aptx_hd_encoder_cleanup(void) {
270 osi_free(a2dp_aptx_hd_encoder_cb.aptx_hd_encoder_state);
271 memset(&a2dp_aptx_hd_encoder_cb, 0, sizeof(a2dp_aptx_hd_encoder_cb));
272 }
273
274 //
275 // Initialize the framing parameters, and set those that don't change
276 // while streaming (e.g., 'sleep_time_ns').
277 //
aptx_hd_init_framing_params(tAPTX_HD_FRAMING_PARAMS * framing_params)278 static void aptx_hd_init_framing_params(
279 tAPTX_HD_FRAMING_PARAMS* framing_params) {
280 framing_params->sleep_time_ns = 0;
281 framing_params->pcm_reads = 0;
282 framing_params->pcm_bytes_per_read = 0;
283 framing_params->aptx_hd_bytes = 0;
284 framing_params->frame_size_counter = 0;
285
286 framing_params->sleep_time_ns = 9000000;
287
288 LOG_INFO("%s: sleep_time_ns = %" PRIu64, __func__,
289 framing_params->sleep_time_ns);
290 }
291
292 //
293 // Set frame size and transmission interval needed to stream the required
294 // sample rate using 2-DH5 packets for aptX and 2-DH3 packets for aptX-LL.
295 // With SCMS-T enabled we need to reserve room for extra headers added later.
296 // Packets are always sent at equals time intervals but to achieve the
297 // required sample rate, the frame size needs to change on occasion.
298 //
299 // Also need to specify how many of the required PCM samples are read at a
300 // time:
301 // aptx_bytes = pcm_reads * pcm_bytes_per_read / 4
302 // and
303 // number of aptX samples produced = pcm_bytes_per_read / 16
304 //
aptx_hd_update_framing_params(tAPTX_HD_FRAMING_PARAMS * framing_params)305 static void aptx_hd_update_framing_params(
306 tAPTX_HD_FRAMING_PARAMS* framing_params) {
307 if (a2dp_aptx_hd_encoder_cb.feeding_params.sample_rate == 48000) {
308 framing_params->aptx_hd_bytes = 648;
309 framing_params->pcm_bytes_per_read = 24;
310 framing_params->pcm_reads = 108;
311 } else {
312 // Assume the sample rate is 44100
313
314 //
315 // Total of 80 iterations:
316 // - Iteration 80: packet size 648, with 108 reads of 24 PCM bytes
317 // - Iterations 20, 40, 60: packet size 612, with 102 reads of 24 PCM bytes
318 // - All other iterations: packet size 594, with 99 reads of 24 PCM bytes
319 //
320 if (framing_params->frame_size_counter + 1 == 80) {
321 framing_params->aptx_hd_bytes = 648;
322 framing_params->pcm_bytes_per_read = 24;
323 framing_params->pcm_reads = 108;
324 } else if (((framing_params->frame_size_counter + 1) % 20) == 0) {
325 framing_params->aptx_hd_bytes = 612;
326 framing_params->pcm_bytes_per_read = 24;
327 framing_params->pcm_reads = 102;
328 } else {
329 framing_params->aptx_hd_bytes = 594;
330 framing_params->pcm_bytes_per_read = 24;
331 framing_params->pcm_reads = 99;
332 }
333 framing_params->frame_size_counter++;
334 if (framing_params->frame_size_counter == 80)
335 framing_params->frame_size_counter = 0;
336 }
337
338 LOG_VERBOSE("%s: sleep_time_ns = %" PRIu64
339 " aptx_hd_bytes = %u "
340 "pcm_bytes_per_read = %u pcm_reads = %u frame_size_counter = %u",
341 __func__, framing_params->sleep_time_ns,
342 framing_params->aptx_hd_bytes, framing_params->pcm_bytes_per_read,
343 framing_params->pcm_reads, framing_params->frame_size_counter);
344 }
345
a2dp_vendor_aptx_hd_feeding_reset(void)346 void a2dp_vendor_aptx_hd_feeding_reset(void) {
347 aptx_hd_init_framing_params(&a2dp_aptx_hd_encoder_cb.framing_params);
348 }
349
a2dp_vendor_aptx_hd_feeding_flush(void)350 void a2dp_vendor_aptx_hd_feeding_flush(void) {
351 aptx_hd_init_framing_params(&a2dp_aptx_hd_encoder_cb.framing_params);
352 }
353
a2dp_vendor_aptx_hd_get_encoder_interval_ms(void)354 uint64_t a2dp_vendor_aptx_hd_get_encoder_interval_ms(void) {
355 return a2dp_aptx_hd_encoder_cb.framing_params.sleep_time_ns / (1000 * 1000);
356 }
357
a2dp_vendor_aptx_hd_send_frames(uint64_t timestamp_us)358 void a2dp_vendor_aptx_hd_send_frames(uint64_t timestamp_us) {
359 tAPTX_HD_FRAMING_PARAMS* framing_params =
360 &a2dp_aptx_hd_encoder_cb.framing_params;
361
362 // Prepare the packet to send
363 BT_HDR* p_buf = (BT_HDR*)osi_malloc(BT_DEFAULT_BUFFER_SIZE);
364 p_buf->offset = A2DP_APTX_HD_OFFSET;
365 p_buf->len = 0;
366 p_buf->layer_specific = 0;
367
368 uint8_t* encoded_ptr = (uint8_t*)(p_buf + 1);
369 encoded_ptr += p_buf->offset;
370
371 aptx_hd_update_framing_params(framing_params);
372
373 //
374 // Read the PCM data and encode it
375 //
376 uint32_t
377 read_buffer32[A2DP_APTX_HD_MAX_PCM_BYTES_PER_READ / sizeof(uint32_t)];
378 uint32_t expected_read_bytes =
379 framing_params->pcm_reads * framing_params->pcm_bytes_per_read;
380 size_t encoded_ptr_index = 0;
381 size_t pcm_bytes_encoded = 0;
382 uint32_t bytes_read = 0;
383
384 a2dp_aptx_hd_encoder_cb.stats.media_read_total_expected_packets++;
385 a2dp_aptx_hd_encoder_cb.stats.media_read_total_expected_reads_count++;
386 a2dp_aptx_hd_encoder_cb.stats.media_read_total_expected_read_bytes +=
387 expected_read_bytes;
388
389 LOG_VERBOSE("%s: PCM read of size %u", __func__, expected_read_bytes);
390 bytes_read = a2dp_aptx_hd_encoder_cb.read_callback((uint8_t*)read_buffer32,
391 expected_read_bytes);
392 a2dp_aptx_hd_encoder_cb.stats.media_read_total_actual_read_bytes +=
393 bytes_read;
394 if (bytes_read < expected_read_bytes) {
395 LOG_WARN("%s: underflow at PCM reading: read %u bytes instead of %u",
396 __func__, bytes_read, expected_read_bytes);
397 a2dp_aptx_hd_encoder_cb.stats.media_read_total_dropped_packets++;
398 osi_free(p_buf);
399 return;
400 }
401 a2dp_aptx_hd_encoder_cb.stats.media_read_total_actual_reads_count++;
402
403 for (uint32_t reads = 0, offset = 0; reads < framing_params->pcm_reads;
404 reads++, offset +=
405 framing_params->pcm_bytes_per_read / sizeof(uint32_t)) {
406 pcm_bytes_encoded +=
407 aptx_hd_encode_24bit(framing_params, &encoded_ptr_index,
408 read_buffer32 + offset, encoded_ptr);
409 }
410
411 // Compute the number of encoded bytes
412 const int COMPRESSION_RATIO = 4;
413 size_t encoded_bytes = pcm_bytes_encoded / COMPRESSION_RATIO;
414 p_buf->len += encoded_bytes;
415 LOG_VERBOSE("%s: encoded %zu PCM bytes to %zu", __func__, pcm_bytes_encoded,
416 encoded_bytes);
417
418 // Update the RTP timestamp
419 *((uint32_t*)(p_buf + 1)) = a2dp_aptx_hd_encoder_cb.timestamp;
420 const uint8_t BYTES_PER_FRAME = 3;
421 uint32_t rtp_timestamp =
422 (pcm_bytes_encoded /
423 a2dp_aptx_hd_encoder_cb.feeding_params.channel_count) /
424 BYTES_PER_FRAME;
425 a2dp_aptx_hd_encoder_cb.timestamp += rtp_timestamp;
426
427 if (p_buf->len > 0) {
428 a2dp_aptx_hd_encoder_cb.enqueue_callback(p_buf, 1, bytes_read);
429 } else {
430 a2dp_aptx_hd_encoder_cb.stats.media_read_total_dropped_packets++;
431 osi_free(p_buf);
432 }
433 }
434
aptx_hd_encode_24bit(tAPTX_HD_FRAMING_PARAMS * framing_params,size_t * data_out_index,uint32_t * data32_in,uint8_t * data_out)435 static size_t aptx_hd_encode_24bit(tAPTX_HD_FRAMING_PARAMS* framing_params,
436 size_t* data_out_index, uint32_t* data32_in,
437 uint8_t* data_out) {
438 size_t pcm_bytes_encoded = 0;
439 const uint8_t* p = (const uint8_t*)(data32_in);
440
441 for (size_t aptx_hd_samples = 0;
442 aptx_hd_samples < framing_params->pcm_bytes_per_read / 24;
443 aptx_hd_samples++) {
444 uint32_t pcmL[4];
445 uint32_t pcmR[4];
446 uint32_t encoded_sample[2];
447
448 // Expand from AUDIO_FORMAT_PCM_24_BIT_PACKED data (3 bytes per sample)
449 // into AUDIO_FORMAT_PCM_8_24_BIT (4 bytes per sample).
450 for (size_t i = 0; i < 4; i++) {
451 pcmL[i] = ((p[0] << 0) | (p[1] << 8) | (((int8_t)p[2]) << 16));
452 p += 3;
453 pcmR[i] = ((p[0] << 0) | (p[1] << 8) | (((int8_t)p[2]) << 16));
454 p += 3;
455 }
456
457 aptx_hd_encoder_encode_stereo_func(
458 a2dp_aptx_hd_encoder_cb.aptx_hd_encoder_state, &pcmL, &pcmR,
459 &encoded_sample);
460
461 uint8_t* encoded_ptr = (uint8_t*)&encoded_sample[0];
462 data_out[*data_out_index + 0] = *(encoded_ptr + 2);
463 data_out[*data_out_index + 1] = *(encoded_ptr + 1);
464 data_out[*data_out_index + 2] = *(encoded_ptr + 0);
465 data_out[*data_out_index + 3] = *(encoded_ptr + 6);
466 data_out[*data_out_index + 4] = *(encoded_ptr + 5);
467 data_out[*data_out_index + 5] = *(encoded_ptr + 4);
468
469 pcm_bytes_encoded += 24;
470 *data_out_index += 6;
471 }
472
473 return pcm_bytes_encoded;
474 }
475
encoderIntervalMs() const476 uint64_t A2dpCodecConfigAptxHd::encoderIntervalMs() const {
477 return a2dp_vendor_aptx_hd_get_encoder_interval_ms();
478 }
479
getEffectiveMtu() const480 int A2dpCodecConfigAptxHd::getEffectiveMtu() const {
481 return a2dp_aptx_hd_encoder_cb.peer_mtu;
482 }
483
debug_codec_dump(int fd)484 void A2dpCodecConfigAptxHd::debug_codec_dump(int fd) {
485 a2dp_aptx_hd_encoder_stats_t* stats = &a2dp_aptx_hd_encoder_cb.stats;
486
487 A2dpCodecConfig::debug_codec_dump(fd);
488
489 dprintf(fd,
490 " Packet counts (expected/dropped) : %zu / "
491 "%zu\n",
492 stats->media_read_total_expected_packets,
493 stats->media_read_total_dropped_packets);
494
495 dprintf(fd,
496 " PCM read counts (expected/actual) : %zu / "
497 "%zu\n",
498 stats->media_read_total_expected_reads_count,
499 stats->media_read_total_actual_reads_count);
500
501 dprintf(fd,
502 " PCM read bytes (expected/actual) : %zu / "
503 "%zu\n",
504 stats->media_read_total_expected_read_bytes,
505 stats->media_read_total_actual_read_bytes);
506 }
507