| /* |
| * Copyright 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "bluetooth-a2dp" |
| #define ATRACE_TAG ATRACE_TAG_AUDIO |
| |
| #include "a2dp_vendor_ldac_encoder.h" |
| |
| #ifdef __ANDROID__ |
| #include <cutils/trace.h> |
| #endif |
| #include <bluetooth/log.h> |
| #include <dlfcn.h> |
| #include <inttypes.h> |
| #include <ldacBT_abr.h> |
| #include <string.h> |
| |
| #include "a2dp_vendor_ldac.h" |
| #include "common/time_util.h" |
| #include "internal_include/bt_target.h" |
| #include "os/log.h" |
| #include "osi/include/allocator.h" |
| #include "stack/include/bt_hdr.h" |
| |
| // |
| // Encoder for LDAC Source Codec |
| // |
| |
| // Initial EQMID for ABR mode. |
| #define LDAC_ABR_MODE_EQMID LDACBT_EQMID_SQ |
| |
| // A2DP LDAC encoder interval in milliseconds |
| #define A2DP_LDAC_ENCODER_INTERVAL_MS 20 |
| #define A2DP_LDAC_MEDIA_BYTES_PER_FRAME 128 |
| |
| // offset |
| #define A2DP_LDAC_OFFSET (AVDT_MEDIA_OFFSET + A2DP_LDAC_MPL_HDR_LEN) |
| |
| using namespace bluetooth; |
| |
| namespace fmt { |
| template <> |
| struct formatter<LDACBT_SMPL_FMT_T> : enum_formatter<LDACBT_SMPL_FMT_T> {}; |
| } // namespace fmt |
| |
| typedef struct { |
| uint32_t sample_rate; |
| uint8_t channel_mode; |
| uint8_t bits_per_sample; |
| int quality_mode_index; |
| int pcm_wlength; |
| LDACBT_SMPL_FMT_T pcm_fmt; |
| } tA2DP_LDAC_ENCODER_PARAMS; |
| |
| typedef struct { |
| float counter; |
| uint32_t bytes_per_tick; /* pcm bytes read each media task tick */ |
| uint64_t last_frame_us; |
| } tA2DP_LDAC_FEEDING_STATE; |
| |
| typedef struct { |
| uint64_t session_start_us; |
| |
| size_t media_read_total_expected_packets; |
| size_t media_read_total_expected_reads_count; |
| size_t media_read_total_expected_read_bytes; |
| |
| size_t media_read_total_dropped_packets; |
| size_t media_read_total_actual_reads_count; |
| size_t media_read_total_actual_read_bytes; |
| } a2dp_ldac_encoder_stats_t; |
| |
| typedef struct { |
| a2dp_source_read_callback_t read_callback; |
| a2dp_source_enqueue_callback_t enqueue_callback; |
| uint16_t TxAaMtuSize; |
| size_t TxQueueLength; |
| |
| bool use_SCMS_T; |
| tA2DP_ENCODER_INIT_PEER_PARAMS peer_params; |
| uint32_t timestamp; // Timestamp for the A2DP frames |
| |
| HANDLE_LDAC_BT ldac_handle; |
| bool has_ldac_handle; // True if ldac_handle is valid |
| |
| HANDLE_LDAC_ABR ldac_abr_handle; |
| bool has_ldac_abr_handle; |
| int last_ldac_abr_eqmid; |
| size_t ldac_abr_adjustments; |
| |
| tA2DP_FEEDING_PARAMS feeding_params; |
| tA2DP_LDAC_ENCODER_PARAMS ldac_encoder_params; |
| tA2DP_LDAC_FEEDING_STATE ldac_feeding_state; |
| |
| a2dp_ldac_encoder_stats_t stats; |
| } tA2DP_LDAC_ENCODER_CB; |
| |
| static bool ldac_abr_loaded = true; // the library is statically linked |
| |
| static tA2DP_LDAC_ENCODER_CB a2dp_ldac_encoder_cb; |
| |
| static void a2dp_vendor_ldac_encoder_update(A2dpCodecConfig* a2dp_codec_config, |
| bool* p_restart_input, |
| bool* p_restart_output, |
| bool* p_config_updated); |
| static void a2dp_ldac_get_num_frame_iteration(uint8_t* num_of_iterations, |
| uint8_t* num_of_frames, |
| uint64_t timestamp_us); |
| static void a2dp_ldac_encode_frames(uint8_t nb_frame); |
| static bool a2dp_ldac_read_feeding(uint8_t* read_buffer, uint32_t* bytes_read); |
| static uint16_t adjust_effective_mtu( |
| const tA2DP_ENCODER_INIT_PEER_PARAMS& peer_params); |
| static std::string quality_mode_index_to_name(int quality_mode_index); |
| |
| bool A2DP_VendorLoadEncoderLdac(void) { |
| // Nothing to do - the library is statically linked |
| return true; |
| } |
| |
| void A2DP_VendorUnloadEncoderLdac(void) { |
| // Cleanup any LDAC-related state |
| a2dp_vendor_ldac_encoder_cleanup(); |
| } |
| |
| void a2dp_vendor_ldac_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) { |
| a2dp_vendor_ldac_encoder_cleanup(); |
| |
| a2dp_ldac_encoder_cb.stats.session_start_us = |
| bluetooth::common::time_get_os_boottime_us(); |
| |
| a2dp_ldac_encoder_cb.read_callback = read_callback; |
| a2dp_ldac_encoder_cb.enqueue_callback = enqueue_callback; |
| a2dp_ldac_encoder_cb.peer_params = *p_peer_params; |
| a2dp_ldac_encoder_cb.timestamp = 0; |
| a2dp_ldac_encoder_cb.ldac_abr_handle = NULL; |
| a2dp_ldac_encoder_cb.has_ldac_abr_handle = false; |
| a2dp_ldac_encoder_cb.last_ldac_abr_eqmid = -1; |
| a2dp_ldac_encoder_cb.ldac_abr_adjustments = 0; |
| |
| a2dp_ldac_encoder_cb.use_SCMS_T = false; |
| |
| // NOTE: Ignore the restart_input / restart_output flags - this initization |
| // happens when the audio session is (re)started. |
| bool restart_input = false; |
| bool restart_output = false; |
| bool config_updated = false; |
| a2dp_vendor_ldac_encoder_update(a2dp_codec_config, &restart_input, |
| &restart_output, &config_updated); |
| } |
| |
| // Update the A2DP LDAC encoder. |
| // |a2dp_codec_config| is the A2DP codec to use for the update. |
| static void a2dp_vendor_ldac_encoder_update(A2dpCodecConfig* a2dp_codec_config, |
| bool* p_restart_input, |
| bool* p_restart_output, |
| bool* p_config_updated) { |
| tA2DP_LDAC_ENCODER_PARAMS* p_encoder_params = |
| &a2dp_ldac_encoder_cb.ldac_encoder_params; |
| uint8_t codec_info[AVDT_CODEC_SIZE]; |
| |
| *p_restart_input = false; |
| *p_restart_output = false; |
| *p_config_updated = false; |
| |
| if (!a2dp_ldac_encoder_cb.has_ldac_handle) { |
| a2dp_ldac_encoder_cb.ldac_handle = ldacBT_get_handle(); |
| if (a2dp_ldac_encoder_cb.ldac_handle == NULL) { |
| log::error("Cannot get LDAC encoder handle"); |
| return; // TODO: Return an error? |
| } |
| a2dp_ldac_encoder_cb.has_ldac_handle = true; |
| } |
| log::assert_that( |
| a2dp_ldac_encoder_cb.ldac_handle != nullptr, |
| "assert failed: a2dp_ldac_encoder_cb.ldac_handle != nullptr"); |
| |
| if (!a2dp_codec_config->copyOutOtaCodecConfig(codec_info)) { |
| log::error("Cannot update the codec encoder for {}: invalid codec config", |
| a2dp_codec_config->name()); |
| return; |
| } |
| const uint8_t* p_codec_info = codec_info; |
| btav_a2dp_codec_config_t codec_config = a2dp_codec_config->getCodecConfig(); |
| |
| // The feeding parameters |
| tA2DP_FEEDING_PARAMS* p_feeding_params = &a2dp_ldac_encoder_cb.feeding_params; |
| p_feeding_params->sample_rate = |
| A2DP_VendorGetTrackSampleRateLdac(p_codec_info); |
| p_feeding_params->bits_per_sample = |
| a2dp_codec_config->getAudioBitsPerSample(); |
| p_feeding_params->channel_count = |
| A2DP_VendorGetTrackChannelCountLdac(p_codec_info); |
| log::info("sample_rate={} bits_per_sample={} channel_count={}", |
| p_feeding_params->sample_rate, p_feeding_params->bits_per_sample, |
| p_feeding_params->channel_count); |
| a2dp_vendor_ldac_feeding_reset(); |
| |
| // The codec parameters |
| p_encoder_params->sample_rate = |
| a2dp_ldac_encoder_cb.feeding_params.sample_rate; |
| p_encoder_params->channel_mode = |
| A2DP_VendorGetChannelModeCodeLdac(p_codec_info); |
| |
| // Set the quality mode index |
| int old_quality_mode_index = p_encoder_params->quality_mode_index; |
| if (codec_config.codec_specific_1 != 0) { |
| p_encoder_params->quality_mode_index = codec_config.codec_specific_1 % 10; |
| log::info("setting quality mode to {}", |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index)); |
| } else { |
| p_encoder_params->quality_mode_index = A2DP_LDAC_QUALITY_ABR; |
| log::info("setting quality mode to default {}", |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index)); |
| } |
| |
| int ldac_eqmid = LDAC_ABR_MODE_EQMID; |
| if (p_encoder_params->quality_mode_index == A2DP_LDAC_QUALITY_ABR) { |
| if (!ldac_abr_loaded) { |
| p_encoder_params->quality_mode_index = A2DP_LDAC_QUALITY_MID; |
| log::warn( |
| "LDAC ABR library is not loaded, resetting quality mode to {}", |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index)); |
| } else { |
| log::info( |
| "changing mode from {} to {}", |
| quality_mode_index_to_name(old_quality_mode_index), |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index)); |
| if (a2dp_ldac_encoder_cb.ldac_abr_handle != NULL) { |
| log::info("already in LDAC ABR mode, do nothing."); |
| } else { |
| log::info("get and init LDAC ABR handle."); |
| a2dp_ldac_encoder_cb.ldac_abr_handle = ldac_ABR_get_handle(); |
| if (a2dp_ldac_encoder_cb.ldac_abr_handle != NULL) { |
| a2dp_ldac_encoder_cb.has_ldac_abr_handle = true; |
| a2dp_ldac_encoder_cb.last_ldac_abr_eqmid = -1; |
| a2dp_ldac_encoder_cb.ldac_abr_adjustments = 0; |
| ldac_ABR_Init(a2dp_ldac_encoder_cb.ldac_abr_handle, |
| A2DP_LDAC_ENCODER_INTERVAL_MS); |
| } else { |
| p_encoder_params->quality_mode_index = A2DP_LDAC_QUALITY_MID; |
| log::info( |
| "get LDAC ABR handle failed, resetting quality mode to {}.", |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index)); |
| } |
| } |
| } |
| } else { |
| ldac_eqmid = p_encoder_params->quality_mode_index; |
| log::info("in {} mode, free LDAC ABR handle.", |
| quality_mode_index_to_name(ldac_eqmid)); |
| if (a2dp_ldac_encoder_cb.has_ldac_abr_handle) { |
| ldac_ABR_free_handle(a2dp_ldac_encoder_cb.ldac_abr_handle); |
| a2dp_ldac_encoder_cb.ldac_abr_handle = NULL; |
| a2dp_ldac_encoder_cb.has_ldac_abr_handle = false; |
| a2dp_ldac_encoder_cb.last_ldac_abr_eqmid = -1; |
| a2dp_ldac_encoder_cb.ldac_abr_adjustments = 0; |
| } |
| } |
| |
| if (p_encoder_params->quality_mode_index != old_quality_mode_index) |
| *p_config_updated = true; |
| |
| p_encoder_params->pcm_wlength = |
| a2dp_ldac_encoder_cb.feeding_params.bits_per_sample >> 3; |
| // Set the Audio format from pcm_wlength |
| p_encoder_params->pcm_fmt = LDACBT_SMPL_FMT_S16; |
| if (p_encoder_params->pcm_wlength == 2) |
| p_encoder_params->pcm_fmt = LDACBT_SMPL_FMT_S16; |
| else if (p_encoder_params->pcm_wlength == 3) |
| p_encoder_params->pcm_fmt = LDACBT_SMPL_FMT_S24; |
| else if (p_encoder_params->pcm_wlength == 4) |
| p_encoder_params->pcm_fmt = LDACBT_SMPL_FMT_S32; |
| |
| const tA2DP_ENCODER_INIT_PEER_PARAMS& peer_params = |
| a2dp_ldac_encoder_cb.peer_params; |
| a2dp_ldac_encoder_cb.TxAaMtuSize = adjust_effective_mtu(peer_params); |
| log::info("MTU={}, peer_mtu={}", a2dp_ldac_encoder_cb.TxAaMtuSize, |
| peer_params.peer_mtu); |
| log::info( |
| "sample_rate: {} channel_mode: {} quality_mode_index: {} pcm_wlength: {} " |
| "pcm_fmt: {}", |
| p_encoder_params->sample_rate, p_encoder_params->channel_mode, |
| p_encoder_params->quality_mode_index, p_encoder_params->pcm_wlength, |
| p_encoder_params->pcm_fmt); |
| |
| // Initialize the encoder. |
| // NOTE: MTU in the initialization must include the AVDT media header size. |
| int result = ldacBT_init_handle_encode( |
| a2dp_ldac_encoder_cb.ldac_handle, |
| a2dp_ldac_encoder_cb.TxAaMtuSize + AVDT_MEDIA_HDR_SIZE, ldac_eqmid, |
| p_encoder_params->channel_mode, p_encoder_params->pcm_fmt, |
| p_encoder_params->sample_rate); |
| if (result != 0) { |
| int err_code = ldacBT_get_error_code(a2dp_ldac_encoder_cb.ldac_handle); |
| log::error( |
| "error initializing the LDAC encoder: {} api_error = {} handle_error = " |
| "{} block_error = {} error_code = 0x{:x}", |
| result, LDACBT_API_ERR(err_code), LDACBT_HANDLE_ERR(err_code), |
| LDACBT_BLOCK_ERR(err_code), err_code); |
| } |
| } |
| |
| void a2dp_vendor_ldac_encoder_cleanup(void) { |
| if (a2dp_ldac_encoder_cb.has_ldac_abr_handle) { |
| ldac_ABR_free_handle(a2dp_ldac_encoder_cb.ldac_abr_handle); |
| } |
| if (a2dp_ldac_encoder_cb.has_ldac_handle) { |
| ldacBT_free_handle(a2dp_ldac_encoder_cb.ldac_handle); |
| } |
| memset(&a2dp_ldac_encoder_cb, 0, sizeof(a2dp_ldac_encoder_cb)); |
| } |
| |
| void a2dp_vendor_ldac_feeding_reset(void) { |
| /* By default, just clear the entire state */ |
| memset(&a2dp_ldac_encoder_cb.ldac_feeding_state, 0, |
| sizeof(a2dp_ldac_encoder_cb.ldac_feeding_state)); |
| |
| a2dp_ldac_encoder_cb.ldac_feeding_state.bytes_per_tick = |
| (a2dp_ldac_encoder_cb.feeding_params.sample_rate * |
| a2dp_ldac_encoder_cb.feeding_params.bits_per_sample / 8 * |
| a2dp_ldac_encoder_cb.feeding_params.channel_count * |
| A2DP_LDAC_ENCODER_INTERVAL_MS) / |
| 1000; |
| |
| log::info("PCM bytes per tick {}", |
| a2dp_ldac_encoder_cb.ldac_feeding_state.bytes_per_tick); |
| } |
| |
| void a2dp_vendor_ldac_feeding_flush(void) { |
| a2dp_ldac_encoder_cb.ldac_feeding_state.counter = 0.0f; |
| } |
| |
| uint64_t a2dp_vendor_ldac_get_encoder_interval_ms(void) { |
| return A2DP_LDAC_ENCODER_INTERVAL_MS; |
| } |
| |
| int a2dp_vendor_ldac_get_effective_frame_size() { |
| return a2dp_ldac_encoder_cb.TxAaMtuSize; |
| } |
| |
| void a2dp_vendor_ldac_send_frames(uint64_t timestamp_us) { |
| uint8_t nb_frame = 0; |
| uint8_t nb_iterations = 0; |
| |
| a2dp_ldac_get_num_frame_iteration(&nb_iterations, &nb_frame, timestamp_us); |
| log::verbose("Sending {} frames per iteration, {} iterations", nb_frame, |
| nb_iterations); |
| if (nb_frame == 0) return; |
| |
| for (uint8_t counter = 0; counter < nb_iterations; counter++) { |
| if (a2dp_ldac_encoder_cb.has_ldac_abr_handle) { |
| int flag_enable = 1; |
| int prev_eqmid = a2dp_ldac_encoder_cb.last_ldac_abr_eqmid; |
| a2dp_ldac_encoder_cb.last_ldac_abr_eqmid = |
| ldac_ABR_Proc(a2dp_ldac_encoder_cb.ldac_handle, |
| a2dp_ldac_encoder_cb.ldac_abr_handle, |
| a2dp_ldac_encoder_cb.TxQueueLength, flag_enable); |
| if (prev_eqmid != a2dp_ldac_encoder_cb.last_ldac_abr_eqmid) |
| a2dp_ldac_encoder_cb.ldac_abr_adjustments++; |
| #ifdef __ANDROID__ |
| ATRACE_INT("LDAC ABR level", a2dp_ldac_encoder_cb.last_ldac_abr_eqmid); |
| #endif |
| } |
| // Transcode frame and enqueue |
| a2dp_ldac_encode_frames(nb_frame); |
| } |
| } |
| |
| // Obtains the number of frames to send and number of iterations |
| // to be used. |num_of_iterations| and |num_of_frames| parameters |
| // are used as output param for returning the respective values. |
| static void a2dp_ldac_get_num_frame_iteration(uint8_t* num_of_iterations, |
| uint8_t* num_of_frames, |
| uint64_t timestamp_us) { |
| uint32_t result = 0; |
| uint8_t nof = 0; |
| uint8_t noi = 1; |
| |
| uint32_t pcm_bytes_per_frame = |
| A2DP_LDAC_MEDIA_BYTES_PER_FRAME * |
| a2dp_ldac_encoder_cb.feeding_params.channel_count * |
| a2dp_ldac_encoder_cb.feeding_params.bits_per_sample / 8; |
| log::verbose("pcm_bytes_per_frame {}", pcm_bytes_per_frame); |
| |
| uint32_t us_this_tick = A2DP_LDAC_ENCODER_INTERVAL_MS * 1000; |
| uint64_t now_us = timestamp_us; |
| if (a2dp_ldac_encoder_cb.ldac_feeding_state.last_frame_us != 0) |
| us_this_tick = |
| (now_us - a2dp_ldac_encoder_cb.ldac_feeding_state.last_frame_us); |
| a2dp_ldac_encoder_cb.ldac_feeding_state.last_frame_us = now_us; |
| |
| a2dp_ldac_encoder_cb.ldac_feeding_state.counter += |
| (float)a2dp_ldac_encoder_cb.ldac_feeding_state.bytes_per_tick * us_this_tick / |
| (A2DP_LDAC_ENCODER_INTERVAL_MS * 1000); |
| |
| result = |
| a2dp_ldac_encoder_cb.ldac_feeding_state.counter / pcm_bytes_per_frame; |
| a2dp_ldac_encoder_cb.ldac_feeding_state.counter -= |
| result * pcm_bytes_per_frame; |
| nof = result; |
| |
| log::verbose("effective num of frames {}, iterations {}", nof, noi); |
| |
| *num_of_frames = nof; |
| *num_of_iterations = noi; |
| } |
| |
| static void a2dp_ldac_encode_frames(uint8_t nb_frame) { |
| tA2DP_LDAC_ENCODER_PARAMS* p_encoder_params = |
| &a2dp_ldac_encoder_cb.ldac_encoder_params; |
| uint8_t remain_nb_frame = nb_frame; |
| uint16_t ldac_frame_size; |
| uint8_t read_buffer[LDACBT_MAX_LSU * 4 /* byte/sample */ * 2 /* ch */]; |
| |
| switch (p_encoder_params->sample_rate) { |
| case 176400: |
| case 192000: |
| ldac_frame_size = 512; // sample/ch |
| break; |
| case 88200: |
| case 96000: |
| ldac_frame_size = 256; // sample/ch |
| break; |
| case 44100: |
| case 48000: |
| default: |
| ldac_frame_size = 128; // sample/ch |
| break; |
| } |
| |
| uint32_t count; |
| int32_t encode_count = 0; |
| int32_t out_frames = 0; |
| int written = 0; |
| |
| uint32_t bytes_read = 0; |
| while (nb_frame) { |
| BT_HDR* p_buf = (BT_HDR*)osi_malloc(BT_DEFAULT_BUFFER_SIZE); |
| p_buf->offset = A2DP_LDAC_OFFSET; |
| p_buf->len = 0; |
| p_buf->layer_specific = 0; |
| a2dp_ldac_encoder_cb.stats.media_read_total_expected_packets++; |
| |
| count = 0; |
| do { |
| // |
| // Read the PCM data and encode it |
| // |
| uint32_t temp_bytes_read = 0; |
| if (a2dp_ldac_read_feeding(read_buffer, &temp_bytes_read)) { |
| bytes_read += temp_bytes_read; |
| uint8_t* packet = (uint8_t*)(p_buf + 1) + p_buf->offset + p_buf->len; |
| if (a2dp_ldac_encoder_cb.ldac_handle == NULL) { |
| log::error("invalid LDAC handle"); |
| a2dp_ldac_encoder_cb.stats.media_read_total_dropped_packets++; |
| osi_free(p_buf); |
| return; |
| } |
| int result = ldacBT_encode( |
| a2dp_ldac_encoder_cb.ldac_handle, read_buffer, (int*)&encode_count, |
| packet + count, (int*)&written, (int*)&out_frames); |
| if (result != 0) { |
| int err_code = |
| ldacBT_get_error_code(a2dp_ldac_encoder_cb.ldac_handle); |
| log::error( |
| "LDAC encoding error: {} api_error = {} handle_error = {} " |
| "block_error = {} error_code = 0x{:x}", |
| result, LDACBT_API_ERR(err_code), LDACBT_HANDLE_ERR(err_code), |
| LDACBT_BLOCK_ERR(err_code), err_code); |
| a2dp_ldac_encoder_cb.stats.media_read_total_dropped_packets++; |
| osi_free(p_buf); |
| return; |
| } |
| count += written; |
| p_buf->len += written; |
| nb_frame--; |
| p_buf->layer_specific += out_frames; // added a frame to the buffer |
| } else { |
| log::warn("underflow {}", nb_frame); |
| a2dp_ldac_encoder_cb.ldac_feeding_state.counter += |
| nb_frame * LDACBT_ENC_LSU * |
| a2dp_ldac_encoder_cb.feeding_params.channel_count * |
| a2dp_ldac_encoder_cb.feeding_params.bits_per_sample / 8; |
| |
| // no more pcm to read |
| nb_frame = 0; |
| } |
| } while ((written == 0) && nb_frame); |
| |
| if (p_buf->len) { |
| /* |
| * Timestamp of the media packet header represent the TS of the |
| * first frame, i.e the timestamp before including this frame. |
| */ |
| *((uint32_t*)(p_buf + 1)) = a2dp_ldac_encoder_cb.timestamp; |
| |
| // Timestamp will wrap over to 0 if stream continues on long enough |
| // (>25H @ 48KHz). The parameters are promoted to 64bit to ensure that |
| // no unsigned overflow is triggered as ubsan is always enabled. |
| a2dp_ldac_encoder_cb.timestamp = |
| ((uint64_t)a2dp_ldac_encoder_cb.timestamp + |
| (p_buf->layer_specific * ldac_frame_size)) & UINT32_MAX; |
| |
| uint8_t done_nb_frame = remain_nb_frame - nb_frame; |
| remain_nb_frame = nb_frame; |
| if (!a2dp_ldac_encoder_cb.enqueue_callback(p_buf, done_nb_frame, |
| bytes_read)) |
| return; |
| } else { |
| // NOTE: Unlike the execution path for other codecs, it is normal for |
| // LDAC to NOT write encoded data to the last buffer if there wasn't |
| // enough data to write to. That data is accumulated internally by |
| // the codec and included in the next iteration. Therefore, here we |
| // don't increment the "media_read_total_dropped_packets" counter. |
| osi_free(p_buf); |
| } |
| } |
| } |
| |
| static bool a2dp_ldac_read_feeding(uint8_t* read_buffer, uint32_t* bytes_read) { |
| uint32_t read_size = LDACBT_ENC_LSU * |
| a2dp_ldac_encoder_cb.feeding_params.channel_count * |
| a2dp_ldac_encoder_cb.feeding_params.bits_per_sample / 8; |
| |
| a2dp_ldac_encoder_cb.stats.media_read_total_expected_reads_count++; |
| a2dp_ldac_encoder_cb.stats.media_read_total_expected_read_bytes += read_size; |
| |
| /* Read Data from UIPC channel */ |
| uint32_t nb_byte_read = |
| a2dp_ldac_encoder_cb.read_callback(read_buffer, read_size); |
| a2dp_ldac_encoder_cb.stats.media_read_total_actual_read_bytes += nb_byte_read; |
| |
| if (nb_byte_read < read_size) { |
| if (nb_byte_read == 0) return false; |
| |
| /* Fill the unfilled part of the read buffer with silence (0) */ |
| memset(((uint8_t*)read_buffer) + nb_byte_read, 0, read_size - nb_byte_read); |
| nb_byte_read = read_size; |
| } |
| a2dp_ldac_encoder_cb.stats.media_read_total_actual_reads_count++; |
| |
| *bytes_read = nb_byte_read; |
| return true; |
| } |
| |
| static uint16_t adjust_effective_mtu( |
| const tA2DP_ENCODER_INIT_PEER_PARAMS& peer_params) { |
| uint16_t mtu_size = |
| BT_DEFAULT_BUFFER_SIZE - A2DP_LDAC_OFFSET - sizeof(BT_HDR); |
| if (mtu_size > peer_params.peer_mtu) { |
| mtu_size = peer_params.peer_mtu; |
| } |
| log::verbose("original AVDTP MTU size: {}", mtu_size); |
| return mtu_size; |
| } |
| |
| static std::string quality_mode_index_to_name(int quality_mode_index) { |
| switch (quality_mode_index) { |
| case A2DP_LDAC_QUALITY_HIGH: |
| return "HIGH"; |
| case A2DP_LDAC_QUALITY_MID: |
| return "MID"; |
| case A2DP_LDAC_QUALITY_LOW: |
| return "LOW"; |
| case A2DP_LDAC_QUALITY_ABR: |
| return "ABR"; |
| default: |
| return "Unknown"; |
| } |
| } |
| |
| void a2dp_vendor_ldac_set_transmit_queue_length(size_t transmit_queue_length) { |
| a2dp_ldac_encoder_cb.TxQueueLength = transmit_queue_length; |
| } |
| |
| void A2dpCodecConfigLdacSource::debug_codec_dump(int fd) { |
| a2dp_ldac_encoder_stats_t* stats = &a2dp_ldac_encoder_cb.stats; |
| tA2DP_LDAC_ENCODER_PARAMS* p_encoder_params = |
| &a2dp_ldac_encoder_cb.ldac_encoder_params; |
| |
| A2dpCodecConfig::debug_codec_dump(fd); |
| |
| dprintf( |
| fd, " LDAC quality mode : %s\n", |
| quality_mode_index_to_name(p_encoder_params->quality_mode_index).c_str()); |
| |
| dprintf(fd, |
| " LDAC transmission bitrate (Kbps) : %d\n", |
| ldacBT_get_bitrate(a2dp_ldac_encoder_cb.ldac_handle)); |
| |
| dprintf(fd, |
| " LDAC saved transmit queue length : %zu\n", |
| a2dp_ldac_encoder_cb.TxQueueLength); |
| if (a2dp_ldac_encoder_cb.has_ldac_abr_handle) { |
| dprintf(fd, |
| " LDAC adaptive bit rate encode quality mode index : %d\n", |
| a2dp_ldac_encoder_cb.last_ldac_abr_eqmid); |
| dprintf(fd, |
| " LDAC adaptive bit rate adjustments : %zu\n", |
| a2dp_ldac_encoder_cb.ldac_abr_adjustments); |
| } |
| dprintf(fd, " Encoder interval (ms): %" PRIu64 "\n", |
| a2dp_vendor_ldac_get_encoder_interval_ms()); |
| dprintf(fd, " Effective MTU: %d\n", |
| a2dp_vendor_ldac_get_effective_frame_size()); |
| dprintf(fd, |
| " Packet counts (expected/dropped) : %zu / " |
| "%zu\n", |
| stats->media_read_total_expected_packets, |
| stats->media_read_total_dropped_packets); |
| |
| dprintf(fd, |
| " PCM read counts (expected/actual) : %zu / " |
| "%zu\n", |
| stats->media_read_total_expected_reads_count, |
| stats->media_read_total_actual_reads_count); |
| |
| dprintf(fd, |
| " PCM read bytes (expected/actual) : %zu / " |
| "%zu\n", |
| stats->media_read_total_expected_read_bytes, |
| stats->media_read_total_actual_read_bytes); |
| } |
