cb85dcda77
- change some variable declaration locations - use socket recv instead of read o do error handling after each socket operation
2294 lines
71 KiB
C
2294 lines
71 KiB
C
#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "freertos/semphr.h"
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#include "esp_log.h"
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#include "esp_timer.h"
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#include "sdkconfig.h"
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#include "esp_wifi.h"
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#include "esp_system.h"
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#include "esp_event.h"
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#include "nvs_flash.h"
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#include "esp_types.h"
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#include "driver/periph_ctrl.h"
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#include "driver/timer.h"
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#include "audio_element.h"
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#include "audio_pipeline.h"
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#include "audio_event_iface.h"
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#include "i2s_stream.h"
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#include "raw_stream.h"
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#include "mp3_decoder.h"
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#include "flac_decoder.h"
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#include "auto_flac_dec.h"
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#include "esp_peripherals.h"
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#include "periph_spiffs.h"
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#include "board.h"
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//#include "es8388.h"
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#include "lwip/err.h"
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#include "lwip/sockets.h"
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#include "lwip/sys.h"
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#include "lwip/netdb.h"
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#include "lwip/dns.h"
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#include "mdns.h"
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#include "esp_sntp.h"
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#include <wifi_provisioning/manager.h>
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#include <wifi_provisioning/scheme_softap.h>
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#include "snapcast.h"
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#include "MedianFilter.h"
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#include <math.h>
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#include <sys/time.h>
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#include "opus.h"
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#define CONFIG_USE_WIFI_PROVISIONING 0
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#define COLLECT_RUNTIME_STATS 0
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// @ 48kHz, 2ch, 16bit audio data and 24ms wirechunks (hardcoded for now) we expect 0.024 * 2 * 16/8 * 48000 = 4608 Bytes
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#define WIRE_CHUNK_DURATION_MS 20UL//24UL // stream read chunk size [ms]
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#define SAMPLE_RATE 48000UL
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#define CHANNELS 2UL
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#define BITS_PER_SAMPLE 16UL
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const size_t chunkInBytes = (WIRE_CHUNK_DURATION_MS * SAMPLE_RATE * CHANNELS * (BITS_PER_SAMPLE / 8)) / 1000;
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const char *VERSION_STRING = "0.1.0";
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/**
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* @brief Pre define APLL parameters, save compute time
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* | bits_per_sample | rate | sdm0 | sdm1 | sdm2 | odir
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*
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* apll_freq = xtal_freq * (4 + sdm2 + sdm1/256 + sdm0/65536)/((o_div + 2) * 2)
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* I2S bit clock is (apll_freq / 16)
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*/
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static const int apll_predefine[][6] = {
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{16, 11025, 38, 80, 5, 31},
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{16, 16000, 147, 107, 5, 21},
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{16, 22050, 130, 152, 5, 15},
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{16, 32000, 129, 212, 5, 10},
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{16, 44100, 15, 8, 5, 6},
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{16, 48000, 136, 212, 5, 6},
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{16, 96000, 143, 212, 5, 2},
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{0, 0, 0, 0, 0, 0}
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};
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static const int apll_predefine_48k_corr[][6] = {
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{16, 48048, 27, 215, 5, 6}, // ~ 48kHz * 1.001
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{16, 47952, 20, 210, 5, 6}, // ~ 48kHz * 0.999
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{16, 48005, 213, 212, 5, 6}, // ~ 48kHz * 1.0001
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{16, 47995, 84, 212, 5, 6}, // ~ 48kHz * 0.9999
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};
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i2s_stream_cfg_t i2s_cfg = I2S_STREAM_CFG_DEFAULT();
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xQueueHandle i2s_event_queue;
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OpusDecoder *opusDecoder = NULL;
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audio_pipeline_handle_t flacDecodePipeline;
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audio_element_handle_t raw_stream_writer_to_decoder, decoder;
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ringbuf_handle_t i2sRingBufferHandle = NULL;
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uint64_t wirechnkCnt = 0;
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uint64_t pcmchnkCnt = 0;
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TaskHandle_t syncTaskHandle = NULL;
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TaskHandle_t i2STaskHandle = NULL;
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#define CONFIG_USE_SNTP 0
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#define DAC_OUT_BUFFER_TIME_US 0
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int64_t i2sDmaLAtency = 0;
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static const char *TAG = "SC";
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static int sntp_synced = 0;
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char *codecString = NULL;
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int i2sDmaBufCnt = 0;
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// configMAX_PRIORITIES - 1
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// TODO: what are the best values here?
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#define SYNC_TASK_PRIORITY 7//configMAX_PRIORITIES - 2
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#define SYNC_TASK_CORE_ID tskNO_AFFINITY//1//tskNO_AFFINITY
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#define TIMESTAMP_TASK_PRIORITY 6
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#define TIMESTAMP_TASK_CORE_ID tskNO_AFFINITY//1//tskNO_AFFINITY
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#define HTTP_TASK_PRIORITY 6
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#define HTTP_TASK_CORE_ID tskNO_AFFINITY//0//tskNO_AFFINITY
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#define I2S_TASK_PRIORITY 8//6//configMAX_PRIORITIES - 1
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#define I2S_TASK_CORE_ID tskNO_AFFINITY//1//tskNO_AFFINITY
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#define FLAC_DECODER_PRIORITY 6
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#define FLAC_DECODER_CORE_ID tskNO_AFFINITY//0//tskNO_AFFINITY
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QueueHandle_t timestampQueueHandle;
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#define TIMESTAMP_QUEUE_LENGTH 1000 //!< needs to be at least ~500 because if silence is received, the espressif's flac decoder won't generate data on its output for a long time
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static StaticQueue_t timestampQueue;
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uint8_t timestampQueueStorageArea[ TIMESTAMP_QUEUE_LENGTH * sizeof(tv_t) ];
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QueueHandle_t pcmChunkQueueHandle;
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#define PCM_CHNK_QUEUE_LENGTH 500 // TODO: one chunk is hardcoded to 24ms, change it to be dynamically adjustable. 1s buffer ~ 42
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static StaticQueue_t pcmChunkQueue;
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uint8_t pcmChunkQueueStorageArea[ PCM_CHNK_QUEUE_LENGTH * sizeof(wire_chunk_message_t *) ];
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typedef struct snapcast_sync_task_cfg_s {
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audio_element_handle_t *p_raw_stream_writer;
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int64_t outputBufferDacTime_us;
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int64_t buffer_us;
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} snapcast_sync_task_cfg_t;
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typedef struct http_task_cfg_s {
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audio_element_handle_t *p_raw_stream_writer_to_decoder;
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audio_element_handle_t *p_raw_stream_writer_to_i2s;
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} http_task_cfg_t;
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SemaphoreHandle_t timeSyncSemaphoreHandle = NULL;
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SemaphoreHandle_t timer0_syncSampleSemaphoreHandle = NULL;
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SemaphoreHandle_t latencyBufSemaphoreHandle = NULL;
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#define MEDIAN_FILTER_LONG_BUF_LEN 299
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uint8_t latencyBufCnt = 0;
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static int8_t latencyBuffFull = 0;
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static sMedianFilter_t latencyMedianFilterLong;
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static sMedianNode_t latencyMedianLongBuffer[MEDIAN_FILTER_LONG_BUF_LEN];
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static int64_t latencyToServer = 0;
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//buffer_.setSize(500);
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// shortBuffer_.setSize(100);
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// miniBuffer_.setSize(20);
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#define SHORT_BUFFER_LEN 99
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int64_t short_buffer[SHORT_BUFFER_LEN];
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int64_t short_buffer_median[SHORT_BUFFER_LEN];
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static sMedianFilter_t shortMedianFilter;
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static sMedianNode_t shortMedianBuffer[SHORT_BUFFER_LEN];
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static int8_t currentDir = 0; //!< current apll direction, see apll_adjust()
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uint32_t buffer_ms = 400;
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uint8_t muteCH[4] = {0};
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audio_board_handle_t board_handle;
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/* Constants that aren't configurable in menuconfig */
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#define HOST "192.168.8.1"
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#define PORT 1704
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#define BUFF_LEN 10000
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unsigned int addr;
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uint32_t port = 0;
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/* FreeRTOS event group to signal when we are connected & ready to make a request */
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//static EventGroupHandle_t wifi_event_group;
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/* The event group allows multiple bits for each event,
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but we only care about one event - are we connected
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to the AP with an IP? */
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static char buff[BUFF_LEN];
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//static audio_element_handle_t snapcast_stream;
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static char mac_address[18];
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#define MY_SSID "OpenWrt"
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#define MY_WPA2_PSK ""
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static EventGroupHandle_t s_wifi_event_group;
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const int WIFI_CONNECTED_EVENT = BIT0;
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const int WIFI_FAIL_EVENT = BIT1;
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static int s_retry_num = 0;
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// Event handler for catching system events
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static void event_handler(void* arg, esp_event_base_t event_base, int event_id, void* event_data) {
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if (event_base == WIFI_PROV_EVENT) {
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switch (event_id) {
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case WIFI_PROV_START:
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ESP_LOGI(TAG, "Provisioning started");
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break;
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case WIFI_PROV_CRED_RECV: {
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wifi_sta_config_t *wifi_sta_cfg = (wifi_sta_config_t *)event_data;
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ESP_LOGI(TAG, "Received Wi-Fi credentials"
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"\n\tSSID : %s\n\tPassword : %s",
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(const char *) wifi_sta_cfg->ssid,
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(const char *) wifi_sta_cfg->password);
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break;
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}
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case WIFI_PROV_CRED_FAIL: {
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wifi_prov_sta_fail_reason_t *reason = (wifi_prov_sta_fail_reason_t *)event_data;
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ESP_LOGE(TAG, "Provisioning failed!\n\tReason : %s"
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"\n\tPlease reset to factory and retry provisioning",
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(*reason == WIFI_PROV_STA_AUTH_ERROR) ?
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"Wi-Fi station authentication failed" : "Wi-Fi access-point not found");
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break;
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}
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case WIFI_PROV_CRED_SUCCESS:
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ESP_LOGI(TAG, "Provisioning successful");
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break;
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case WIFI_PROV_END:
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/* De-initialize manager once provisioning is finished */
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wifi_prov_mgr_deinit();
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break;
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default:
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break;
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}
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
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esp_wifi_connect();
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}
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else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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ESP_LOGI(TAG, "Connected with IP Address:" IPSTR, IP2STR(&event->ip_info.ip));
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/* Signal main application to continue execution */
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_EVENT);
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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ESP_LOGI(TAG, "Disconnected. Connecting to the AP again...");
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esp_wifi_connect();
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}
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}
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static void get_device_service_name(char *service_name, size_t max)
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{
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uint8_t eth_mac[6];
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const char *ssid_prefix = "PROV_";
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esp_wifi_get_mac(WIFI_IF_STA, eth_mac);
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snprintf(service_name, max, "%s%02X%02X%02X",
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ssid_prefix, eth_mac[3], eth_mac[4], eth_mac[5]);
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}
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#if CONFIG_USE_WIFI_PROVISIONING == 1
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/**
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*
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*/
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static void wifi_init_sta(void) {
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// Start Wi-Fi in station mode
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_start());
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// Waiting until either the connection is established (WIFI_CONNECTED_EVENT) or connection failed for the maximum
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// number of re-tries (WIFI_FAIL_EVENT). The bits are set by event_handler() (see above)
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EventBits_t bits = xEventGroupWaitBits( s_wifi_event_group,
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WIFI_CONNECTED_EVENT | WIFI_FAIL_EVENT,
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pdFALSE,
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pdFALSE,
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portMAX_DELAY );
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// xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually happened.
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if (bits & WIFI_CONNECTED_EVENT) {
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ESP_LOGI(TAG, "connected to ap");
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}
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else if (bits & WIFI_FAIL_EVENT) {
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ESP_LOGI(TAG, "Failed to connect to AP ...");
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}
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else {
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ESP_LOGE(TAG, "UNEXPECTED EVENT");
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}
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}
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/**
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*
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*/
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void wifi_init_provisioning(void) {
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// Register our event handler for Wi-Fi, IP and Provisioning related events
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_PROV_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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// Initialize Wi-Fi including netif with default config
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esp_netif_create_default_wifi_sta();
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esp_netif_create_default_wifi_ap();
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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// Configuration for the provisioning manager
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wifi_prov_mgr_config_t config = {
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.scheme = wifi_prov_scheme_softap,
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.scheme_event_handler = WIFI_PROV_EVENT_HANDLER_NONE
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};
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// Initialize provisioning manager with the
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// configuration parameters set above
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ESP_ERROR_CHECK(wifi_prov_mgr_init(config));
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bool provisioned = false;
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/* Let's find out if the device is provisioned */
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ESP_ERROR_CHECK(wifi_prov_mgr_is_provisioned(&provisioned));
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/* If device is not yet provisioned start provisioning service */
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if (!provisioned) {
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ESP_LOGI(TAG, "Starting provisioning");
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// Wi-Fi SSID when scheme is wifi_prov_scheme_softap
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char service_name[12];
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get_device_service_name(service_name, sizeof(service_name));
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/* What is the security level that we want (0 or 1):
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* - WIFI_PROV_SECURITY_0 is simply plain text communication.
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* - WIFI_PROV_SECURITY_1 is secure communication which consists of secure handshake
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* using X25519 key exchange and proof of possession (pop) and AES-CTR
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* for encryption/decryption of messages.
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*/
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wifi_prov_security_t security = WIFI_PROV_SECURITY_1;
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/* Do we want a proof-of-possession (ignored if Security 0 is selected):
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* - this should be a string with length > 0
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* - NULL if not used
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*/
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const char *pop = NULL;//"abcd1234";
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/* What is the service key (could be NULL)
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* This translates to :
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* - Wi-Fi password when scheme is wifi_prov_scheme_softap
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* - simply ignored when scheme is wifi_prov_scheme_ble
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*/
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const char *service_key = "12345678";
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/* An optional endpoint that applications can create if they expect to
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* get some additional custom data during provisioning workflow.
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* The endpoint name can be anything of your choice.
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* This call must be made before starting the provisioning.
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*/
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//wifi_prov_mgr_endpoint_create("custom-data");
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/* Start provisioning service */
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ESP_ERROR_CHECK(wifi_prov_mgr_start_provisioning(security, pop, service_name, service_key));
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/* The handler for the optional endpoint created above.
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* This call must be made after starting the provisioning, and only if the endpoint
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* has already been created above.
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*/
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//wifi_prov_mgr_endpoint_register("custom-data", custom_prov_data_handler, NULL);
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/* Uncomment the following to wait for the provisioning to finish and then release
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* the resources of the manager. Since in this case de-initialization is triggered
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* by the default event loop handler, we don't need to call the following */
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// wifi_prov_mgr_wait();
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// wifi_prov_mgr_deinit();
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}
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else {
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ESP_LOGI(TAG, "Already provisioned, starting Wi-Fi STA");
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/* We don't need the manager as device is already provisioned,
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* so let's release it's resources */
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wifi_prov_mgr_deinit();
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/* Start Wi-Fi station */
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wifi_init_sta();
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}
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/* Wait for Wi-Fi connection */
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xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_EVENT, false, true, portMAX_DELAY);
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}
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/**
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*
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*/
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void wifi_init(void) {
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wifi_init_provisioning();
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}
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#else
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/**
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*
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*/
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void wifi_init(void) {
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// Register our event handler for Wi-Fi, IP and Provisioning related events
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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// Initialize Wi-Fi including netif with default config
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esp_netif_create_default_wifi_sta();
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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// wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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// ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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// ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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// ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = MY_SSID,
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.password = MY_WPA2_PSK,
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.bssid_set = false
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},
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};
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK(esp_wifi_start() );
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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// Waiting until either the connection is established (WIFI_CONNECTED_EVENT) or connection failed for the maximum
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// number of re-tries (WIFI_FAIL_EVENT). The bits are set by event_handler() (see above)
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EventBits_t bits = xEventGroupWaitBits( s_wifi_event_group,
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WIFI_CONNECTED_EVENT | WIFI_FAIL_EVENT,
|
|
pdFALSE,
|
|
pdFALSE,
|
|
portMAX_DELAY );
|
|
|
|
// xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually happened.
|
|
if (bits & WIFI_CONNECTED_EVENT) {
|
|
ESP_LOGI(TAG, "connected to ap");
|
|
} else if (bits & WIFI_FAIL_EVENT) {
|
|
ESP_LOGI(TAG, "Failed to connect to AP ...");
|
|
} else {
|
|
ESP_LOGE(TAG, "UNEXPECTED EVENT");
|
|
}
|
|
|
|
//ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
|
|
//ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
|
|
//vEventGroupDelete(s_wifi_event_group);
|
|
}
|
|
#endif
|
|
|
|
static const char * if_str[] = {"STA", "AP", "ETH", "MAX"};
|
|
static const char * ip_protocol_str[] = {"V4", "V6", "MAX"};
|
|
|
|
void mdns_print_results(mdns_result_t * results){
|
|
mdns_result_t * r = results;
|
|
mdns_ip_addr_t * a = NULL;
|
|
int i = 1, t;
|
|
while(r){
|
|
printf("%d: Interface: %s, Type: %s\n", i++, if_str[r->tcpip_if], ip_protocol_str[r->ip_protocol]);
|
|
if(r->instance_name){
|
|
printf(" PTR : %s\n", r->instance_name);
|
|
}
|
|
if(r->hostname){
|
|
printf(" SRV : %s.local:%u\n", r->hostname, r->port);
|
|
}
|
|
if(r->txt_count){
|
|
printf(" TXT : [%u] ", r->txt_count);
|
|
for(t=0; t<r->txt_count; t++){
|
|
printf("%s=%s; ", r->txt[t].key, r->txt[t].value);
|
|
}
|
|
printf("\n");
|
|
}
|
|
a = r->addr;
|
|
while(a){
|
|
if(a->addr.type == IPADDR_TYPE_V6){
|
|
printf(" AAAA: " IPV6STR "\n", IPV62STR(a->addr.u_addr.ip6));
|
|
} else {
|
|
printf(" A : " IPSTR "\n", IP2STR(&(a->addr.u_addr.ip4)));
|
|
}
|
|
a = a->next;
|
|
}
|
|
r = r->next;
|
|
}
|
|
|
|
}
|
|
|
|
void find_mdns_service(const char * service_name, const char * proto) {
|
|
ESP_LOGI(TAG, "Query PTR: %s.%s.local", service_name, proto);
|
|
|
|
mdns_result_t * r = NULL;
|
|
esp_err_t err = mdns_query_ptr(service_name, proto, 3000, 20, &r);
|
|
if(err){
|
|
ESP_LOGE(TAG, "Query Failed");
|
|
return;
|
|
}
|
|
if(!r){
|
|
ESP_LOGW(TAG, "No results found!");
|
|
return;
|
|
}
|
|
|
|
if(r->instance_name){
|
|
printf(" PTR : %s\n", r->instance_name);
|
|
}
|
|
if(r->hostname){
|
|
printf(" SRV : %s.local:%u\n", r->hostname, r->port);
|
|
port = r->port;
|
|
}
|
|
mdns_query_results_free(r);
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int8_t reset_latency_buffer(void) {
|
|
// init diff buff median filter
|
|
latencyMedianFilterLong.numNodes = MEDIAN_FILTER_LONG_BUF_LEN;
|
|
latencyMedianFilterLong.medianBuffer = latencyMedianLongBuffer;
|
|
if (MEDIANFILTER_Init(&latencyMedianFilterLong) < 0) {
|
|
ESP_LOGE(TAG, "reset_diff_buffer: couldn't init median filter long. STOP");
|
|
|
|
return -2;
|
|
}
|
|
|
|
/*
|
|
latencyMedianFilterMini.numNodes = MEDIAN_FILTER_MINI_BUF_LEN;
|
|
latencyMedianFilterMini.medianBuffer = latencyMedianMiniBuffer;
|
|
if (MEDIANFILTER_Init(&latencyMedianFilterMini) < 0) {
|
|
ESP_LOGE(TAG, "reset_diff_buffer: couldn't init median filter mini. STOP");
|
|
|
|
return -2;
|
|
}
|
|
|
|
latencyMedianFilterShort.numNodes = MEDIAN_FILTER_SHORT_BUF_LEN;
|
|
latencyMedianFilterShort.medianBuffer = latencyMedianShortBuffer;
|
|
if (MEDIANFILTER_Init(&latencyMedianFilterShort) < 0) {
|
|
ESP_LOGE(TAG, "reset_diff_buffer: couldn't init median filter short. STOP");
|
|
|
|
return -2;
|
|
}
|
|
*/
|
|
|
|
if (latencyBufSemaphoreHandle == NULL) {
|
|
ESP_LOGE(TAG, "reset_diff_buffer: latencyBufSemaphoreHandle == NULL");
|
|
|
|
return -2;
|
|
}
|
|
|
|
if (xSemaphoreTake( latencyBufSemaphoreHandle, portMAX_DELAY ) == pdTRUE) {
|
|
latencyBufCnt = 0;
|
|
latencyBuffFull = false;
|
|
latencyToServer = 0;
|
|
|
|
xSemaphoreGive( latencyBufSemaphoreHandle );
|
|
}
|
|
else {
|
|
ESP_LOGW(TAG, "reset_diff_buffer: can't take semaphore");
|
|
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int8_t latency_buffer_full(void) {
|
|
int8_t tmp;
|
|
|
|
if (latencyBufSemaphoreHandle == NULL) {
|
|
ESP_LOGE(TAG, "latency_buffer_full: latencyBufSemaphoreHandle == NULL");
|
|
|
|
return -2;
|
|
}
|
|
|
|
if (xSemaphoreTake( latencyBufSemaphoreHandle, 0) == pdFALSE) {
|
|
ESP_LOGW(TAG, "latency_buffer_full: can't take semaphore");
|
|
|
|
return -1;
|
|
}
|
|
|
|
tmp = latencyBuffFull;
|
|
|
|
xSemaphoreGive( latencyBufSemaphoreHandle );
|
|
|
|
return tmp;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int8_t get_diff_to_server( int64_t *tDiff ) {
|
|
static int64_t lastDiff = 0;
|
|
|
|
if (latencyBufSemaphoreHandle == NULL) {
|
|
ESP_LOGE(TAG, "get_diff_to_server: latencyBufSemaphoreHandle == NULL");
|
|
|
|
return -2;
|
|
}
|
|
|
|
if (xSemaphoreTake( latencyBufSemaphoreHandle, 0 ) == pdFALSE) {
|
|
*tDiff = lastDiff;
|
|
|
|
//ESP_LOGW(TAG, "get_diff_to_server: can't take semaphore. Old diff retreived");
|
|
|
|
return -1;
|
|
}
|
|
|
|
*tDiff = latencyToServer;
|
|
lastDiff = latencyToServer; // store value, so we can return a value if semaphore couldn't be taken
|
|
|
|
xSemaphoreGive( latencyBufSemaphoreHandle );
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int8_t server_now( int64_t *sNow ) {
|
|
struct timeval now;
|
|
int64_t diff;
|
|
|
|
// get current time
|
|
if (gettimeofday(&now, NULL)) {
|
|
ESP_LOGE(TAG, "server_now: Failed to get time of day");
|
|
|
|
return -1;
|
|
}
|
|
|
|
if (get_diff_to_server(&diff) == -1) {
|
|
ESP_LOGW(TAG, "server_now: can't get current diff to server. Retrieved old one");
|
|
}
|
|
|
|
if (diff == 0) {
|
|
//ESP_LOGW(TAG, "server_now: diff to server not initialized yet");
|
|
|
|
return -1;
|
|
}
|
|
|
|
*sNow = ((int64_t)now.tv_sec * 1000000LL + (int64_t)now.tv_usec) + diff;
|
|
|
|
// ESP_LOGI(TAG, "now: %lldus", (int64_t)now.tv_sec * 1000000LL + (int64_t)now.tv_usec);
|
|
// ESP_LOGI(TAG, "diff: %lldus", diff);
|
|
// ESP_LOGI(TAG, "serverNow: %lldus", *snow);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Timer group0 ISR handler
|
|
*
|
|
* Note:
|
|
* We don't call the timer API here because they are not declared with IRAM_ATTR.
|
|
* If we're okay with the timer irq not being serviced while SPI flash cache is disabled,
|
|
* we can allocate this interrupt without the ESP_INTR_FLAG_IRAM flag and use the normal API.
|
|
*/
|
|
void IRAM_ATTR timer_group0_isr(void *para) {
|
|
timer_spinlock_take(TIMER_GROUP_0);
|
|
|
|
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
|
|
|
|
// Retrieve the interrupt status and the counter value
|
|
// from the timer that reported the interrupt
|
|
uint32_t timer_intr = timer_group_get_intr_status_in_isr(TIMER_GROUP_0);
|
|
|
|
// Clear the interrupt
|
|
// and update the alarm time for the timer with without reload
|
|
if (timer_intr & TIMER_INTR_T1) {
|
|
timer_group_clr_intr_status_in_isr(TIMER_GROUP_0, TIMER_1);
|
|
|
|
// Notify the task in the task's notification value.
|
|
xTaskNotifyFromISR( syncTaskHandle,
|
|
0,
|
|
eNoAction,
|
|
&xHigherPriorityTaskWoken );
|
|
}
|
|
|
|
timer_spinlock_give(TIMER_GROUP_0);
|
|
|
|
if( xHigherPriorityTaskWoken ) {
|
|
portYIELD_FROM_ISR ();
|
|
}
|
|
}
|
|
|
|
static void tg0_timer_deinit(void) {
|
|
timer_deinit(TIMER_GROUP_0, TIMER_1);
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static void tg0_timer_init(void) {
|
|
// Select and initialize basic parameters of the timer
|
|
timer_config_t config = {
|
|
//.divider = 8, // 100ns ticks
|
|
.divider = 80, // 1µs ticks
|
|
.counter_dir = TIMER_COUNT_UP,
|
|
.counter_en = TIMER_PAUSE,
|
|
.alarm_en = TIMER_ALARM_EN,
|
|
.auto_reload = TIMER_AUTORELOAD_DIS,
|
|
}; // default clock source is APB
|
|
timer_init(TIMER_GROUP_0, TIMER_1, &config);
|
|
|
|
// Configure the alarm value and the interrupt on alarm.
|
|
timer_set_alarm_value(TIMER_GROUP_0, TIMER_1, 0);
|
|
timer_enable_intr(TIMER_GROUP_0, TIMER_1);
|
|
//timer_isr_register(TIMER_GROUP_0, TIMER_1, timer_group0_isr, NULL, ESP_INTR_FLAG_IRAM | ESP_INTR_FLAG_LEVEL3, NULL);
|
|
timer_isr_register(TIMER_GROUP_0, TIMER_1, timer_group0_isr, NULL, ESP_INTR_FLAG_IRAM | ESP_INTR_FLAG_LEVEL1, NULL);
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static void tg0_timer1_start(uint64_t alarm_value) {
|
|
timer_pause(TIMER_GROUP_0, TIMER_1);
|
|
timer_set_counter_value(TIMER_GROUP_0, TIMER_1, 0);
|
|
timer_set_alarm_value(TIMER_GROUP_0, TIMER_1, alarm_value);
|
|
timer_set_alarm(TIMER_GROUP_0, TIMER_1, TIMER_ALARM_EN);
|
|
timer_start(TIMER_GROUP_0, TIMER_1);
|
|
|
|
// ESP_LOGI(TAG, "started age timer");
|
|
}
|
|
|
|
|
|
#if COLLECT_RUNTIME_STATS == 1
|
|
|
|
#define STATS_TASK_PRIO 3
|
|
#define STATS_TICKS pdMS_TO_TICKS(5000)
|
|
#define ARRAY_SIZE_OFFSET 5 //Increase this if print_real_time_stats returns ESP_ERR_INVALID_SIZE
|
|
|
|
//static char task_names[15][configMAX_TASK_NAME_LEN];
|
|
|
|
/**
|
|
* @brief Function to print the CPU usage of tasks over a given duration.
|
|
*
|
|
* This function will measure and print the CPU usage of tasks over a specified
|
|
* number of ticks (i.e. real time stats). This is implemented by simply calling
|
|
* uxTaskGetSystemState() twice separated by a delay, then calculating the
|
|
* differences of task run times before and after the delay.
|
|
*
|
|
* @note If any tasks are added or removed during the delay, the stats of
|
|
* those tasks will not be printed.
|
|
* @note This function should be called from a high priority task to minimize
|
|
* inaccuracies with delays.
|
|
* @note When running in dual core mode, each core will correspond to 50% of
|
|
* the run time.
|
|
*
|
|
* @param xTicksToWait Period of stats measurement
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_NO_MEM Insufficient memory to allocated internal arrays
|
|
* - ESP_ERR_INVALID_SIZE Insufficient array size for uxTaskGetSystemState. Trying increasing ARRAY_SIZE_OFFSET
|
|
* - ESP_ERR_INVALID_STATE Delay duration too short
|
|
*/
|
|
static esp_err_t print_real_time_stats(TickType_t xTicksToWait)
|
|
{
|
|
TaskStatus_t *start_array = NULL, *end_array = NULL;
|
|
UBaseType_t start_array_size, end_array_size;
|
|
uint32_t start_run_time, end_run_time;
|
|
esp_err_t ret;
|
|
|
|
//Allocate array to store current task states
|
|
start_array_size = uxTaskGetNumberOfTasks() + ARRAY_SIZE_OFFSET;
|
|
start_array = malloc(sizeof(TaskStatus_t) * start_array_size);
|
|
if (start_array == NULL) {
|
|
ret = ESP_ERR_NO_MEM;
|
|
goto exit;
|
|
}
|
|
//Get current task states
|
|
start_array_size = uxTaskGetSystemState(start_array, start_array_size, &start_run_time);
|
|
if (start_array_size == 0) {
|
|
ret = ESP_ERR_INVALID_SIZE;
|
|
goto exit;
|
|
}
|
|
|
|
vTaskDelay(xTicksToWait);
|
|
|
|
//Allocate array to store tasks states post delay
|
|
end_array_size = uxTaskGetNumberOfTasks() + ARRAY_SIZE_OFFSET;
|
|
end_array = malloc(sizeof(TaskStatus_t) * end_array_size);
|
|
if (end_array == NULL) {
|
|
ret = ESP_ERR_NO_MEM;
|
|
goto exit;
|
|
}
|
|
//Get post delay task states
|
|
end_array_size = uxTaskGetSystemState(end_array, end_array_size, &end_run_time);
|
|
if (end_array_size == 0) {
|
|
ret = ESP_ERR_INVALID_SIZE;
|
|
goto exit;
|
|
}
|
|
|
|
//Calculate total_elapsed_time in units of run time stats clock period.
|
|
uint32_t total_elapsed_time = (end_run_time - start_run_time);
|
|
if (total_elapsed_time == 0) {
|
|
ret = ESP_ERR_INVALID_STATE;
|
|
goto exit;
|
|
}
|
|
|
|
printf("| Task | Run Time | Percentage\n");
|
|
//Match each task in start_array to those in the end_array
|
|
for (int i = 0; i < start_array_size; i++) {
|
|
int k = -1;
|
|
for (int j = 0; j < end_array_size; j++) {
|
|
if (start_array[i].xHandle == end_array[j].xHandle) {
|
|
k = j;
|
|
//Mark that task have been matched by overwriting their handles
|
|
start_array[i].xHandle = NULL;
|
|
end_array[j].xHandle = NULL;
|
|
break;
|
|
}
|
|
}
|
|
//Check if matching task found
|
|
if (k >= 0) {
|
|
uint32_t task_elapsed_time = end_array[k].ulRunTimeCounter - start_array[i].ulRunTimeCounter;
|
|
uint32_t percentage_time = (task_elapsed_time * 100UL) / (total_elapsed_time * portNUM_PROCESSORS);
|
|
printf("| %s | %d | %d%%\n", start_array[i].pcTaskName, task_elapsed_time, percentage_time);
|
|
}
|
|
}
|
|
|
|
//Print unmatched tasks
|
|
for (int i = 0; i < start_array_size; i++) {
|
|
if (start_array[i].xHandle != NULL) {
|
|
printf("| %s | Deleted\n", start_array[i].pcTaskName);
|
|
}
|
|
}
|
|
for (int i = 0; i < end_array_size; i++) {
|
|
if (end_array[i].xHandle != NULL) {
|
|
printf("| %s | Created\n", end_array[i].pcTaskName);
|
|
}
|
|
}
|
|
ret = ESP_OK;
|
|
|
|
exit: //Common return path
|
|
free(start_array);
|
|
free(end_array);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static void stats_task(void *arg) {
|
|
//Print real time stats periodically
|
|
while (1) {
|
|
printf("\n\nGetting real time stats over %d ticks\n", STATS_TICKS);
|
|
if (print_real_time_stats(STATS_TICKS) == ESP_OK) {
|
|
printf("Real time stats obtained\n");
|
|
} else {
|
|
printf("Error getting real time stats\n");
|
|
}
|
|
vTaskDelay(pdMS_TO_TICKS(1000));
|
|
}
|
|
}
|
|
|
|
#endif // COLLECT_RUNTIME_STATS
|
|
|
|
|
|
// void rtc_clk_apll_enable(bool enable, uint32_t sdm0, uint32_t sdm1, uint32_t sdm2, uint32_t o_div);
|
|
// apll_freq = xtal_freq * (4 + sdm2 + sdm1/256 + sdm0/65536)/((o_div + 2) * 2)
|
|
// xtal == 40MHz on lyrat v4.3
|
|
// I2S bit_clock = rate * (number of channels) * bits_per_sample
|
|
void adjust_apll(int8_t direction) {
|
|
int sdm0, sdm1, sdm2, o_div;
|
|
int index = 2; // 2 for slow adjustment, 0 for fast adjustment
|
|
|
|
// only change if necessary
|
|
if (currentDir == direction) {
|
|
return;
|
|
}
|
|
|
|
if (direction == 1) {
|
|
// speed up
|
|
sdm0 = apll_predefine_48k_corr[index][2];
|
|
sdm1= apll_predefine_48k_corr[index][3];
|
|
sdm2 = apll_predefine_48k_corr[index][4];
|
|
o_div = apll_predefine_48k_corr[index][5];
|
|
}
|
|
else if (direction == -1) {
|
|
// slow down
|
|
sdm0 = apll_predefine_48k_corr[index + 1][2];
|
|
sdm1= apll_predefine_48k_corr[index + 1][3];
|
|
sdm2 = apll_predefine_48k_corr[index + 1][4];
|
|
o_div = apll_predefine_48k_corr[index + 1][5];
|
|
}
|
|
else {
|
|
// reset to normal playback speed
|
|
sdm0 = apll_predefine[5][2];
|
|
sdm1= apll_predefine[5][3];
|
|
sdm2 = apll_predefine[5][4];
|
|
o_div = apll_predefine[5][5];
|
|
|
|
direction = 0;
|
|
}
|
|
|
|
rtc_clk_apll_enable(1, sdm0, sdm1, sdm2, o_div);
|
|
|
|
currentDir = direction;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static void snapcast_sync_task(void *pvParameters) {
|
|
// snapcast_sync_task_cfg_t *taskCfg = (snapcast_sync_task_cfg_t *)pvParameters;
|
|
wire_chunk_message_t *chnk = NULL;
|
|
int64_t serverNow = 0;
|
|
int64_t age;
|
|
BaseType_t ret;
|
|
int64_t chunkDuration_us = WIRE_CHUNK_DURATION_MS * 1000;
|
|
int64_t sampleDuration_ns = (1000000 / 48); // 16bit, 2ch, 48kHz (in nano seconds)
|
|
char *p_payload = NULL;
|
|
size_t size = 0;
|
|
uint32_t notifiedValue;
|
|
uint64_t timer_val;
|
|
int32_t alarmValSub = 0;
|
|
int initialSync = 0;
|
|
int64_t avg = 0;
|
|
int64_t latencyInitialSync = 0;
|
|
int dir = 0;
|
|
i2s_event_t i2sEvent;
|
|
uint32_t i2sDmaBufferCnt = 0;
|
|
int writtenBytes, bytesAvailable;
|
|
int64_t buffer_ms_local = buffer_ms;
|
|
|
|
ESP_LOGI(TAG, "started sync task");
|
|
|
|
// tg0_timer_init(); // initialize initial sync timer
|
|
|
|
initialSync = 0;
|
|
|
|
currentDir = 1; // force adjust_apll to set correct playback speed
|
|
adjust_apll(0);
|
|
|
|
shortMedianFilter.numNodes = SHORT_BUFFER_LEN;
|
|
shortMedianFilter.medianBuffer = shortMedianBuffer;
|
|
if (MEDIANFILTER_Init(&shortMedianFilter) ) {
|
|
ESP_LOGE(TAG, "snapcast_sync_task: couldn't init shortMedianFilter. STOP");
|
|
|
|
return;
|
|
}
|
|
|
|
while(1) {
|
|
// get notification value which holds buffer_ms as communicated by snapserver
|
|
xTaskNotifyWait( pdFALSE, // Don't clear bits on entry.
|
|
pdFALSE, // Don't clear bits on exit
|
|
¬ifiedValue, // Stores the notified value.
|
|
0
|
|
);
|
|
|
|
buffer_ms_local = (int64_t)notifiedValue * 1000LL;
|
|
|
|
if (chnk == NULL) {
|
|
ret = xQueueReceive(pcmChunkQueueHandle, &chnk, pdMS_TO_TICKS(2000) );
|
|
if( ret != pdFAIL ) {
|
|
// ESP_LOGW(TAG, "got pcm chunk");
|
|
}
|
|
}
|
|
else {
|
|
// ESP_LOGW(TAG, "already retrieved chunk needs service");
|
|
ret = pdPASS;
|
|
}
|
|
|
|
if( ret != pdFAIL ) {
|
|
if (server_now(&serverNow) >= 0) {
|
|
age = serverNow -
|
|
((int64_t)chnk->timestamp.sec * 1000000LL + (int64_t)chnk->timestamp.usec) -
|
|
(int64_t)buffer_ms_local +
|
|
(int64_t)i2sDmaLAtency +
|
|
(int64_t)DAC_OUT_BUFFER_TIME_US;
|
|
}
|
|
else {
|
|
ESP_LOGW(TAG, "couldn't get server now");
|
|
|
|
if (chnk != NULL) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
|
|
vTaskDelay( pdMS_TO_TICKS(1) );
|
|
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
// wait for early time syncs to be ready
|
|
int tmp = latency_buffer_full();
|
|
if ( tmp <= 0 ) {
|
|
if (tmp < 0) {
|
|
ESP_LOGW(TAG, "test");
|
|
|
|
vTaskDelay(1);
|
|
|
|
continue;
|
|
}
|
|
|
|
if (age >= 0) {
|
|
if (chnk != NULL) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
}
|
|
|
|
ESP_LOGW(TAG, "diff buffer not full");
|
|
|
|
vTaskDelay( pdMS_TO_TICKS(10) );
|
|
|
|
continue;
|
|
}
|
|
*/
|
|
|
|
if (chnk != NULL) {
|
|
p_payload = chnk->payload;
|
|
size = chnk->size;
|
|
}
|
|
|
|
if (age < 0) { // get initial sync using hardware timer
|
|
if (initialSync == 0) {
|
|
if (MEDIANFILTER_Init(&shortMedianFilter) ) {
|
|
ESP_LOGE(TAG, "snapcast_sync_task: couldn't init shortMedianFilter. STOP");
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
ESP_LOGI(TAG, "age before sync %lld", age);
|
|
|
|
// ensure enough time for resync
|
|
if (age > -(int64_t)WIRE_CHUNK_DURATION_MS * 1000 * 2) {
|
|
if (chnk != NULL) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
|
|
ESP_LOGI(TAG, "trying to resync");
|
|
|
|
vTaskDelay(1);
|
|
|
|
continue;
|
|
}
|
|
*/
|
|
|
|
adjust_apll(0); // reset to normal playback speed
|
|
|
|
i2s_zero_dma_buffer(i2s_cfg.i2s_port);
|
|
i2s_stop(i2s_cfg.i2s_port);
|
|
|
|
size_t written;
|
|
if (i2s_write(I2S_NUM_0, p_payload, (size_t)size, &written, 0) != ESP_OK) {
|
|
ESP_LOGE(TAG, "i2s_playback_task: I2S write error");
|
|
}
|
|
size -= written;
|
|
p_payload += written;
|
|
|
|
if ((chnk != NULL) && (size == 0)) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
|
|
//tg0_timer1_start((-age * 10) - alarmValSub)); // alarm a little earlier to account for context switch duration from freeRTOS, timer with 100ns ticks
|
|
tg0_timer1_start(-age - alarmValSub); // alarm a little earlier to account for context switch duration from freeRTOS, timer with 1µs ticks
|
|
|
|
// Wait to be notified of a timer interrupt.
|
|
xTaskNotifyWait( pdFALSE, // Don't clear bits on entry.
|
|
pdFALSE, // Don't clear bits on exit.
|
|
¬ifiedValue, // Stores the notified value.
|
|
portMAX_DELAY
|
|
);
|
|
|
|
i2s_start(i2s_cfg.i2s_port);
|
|
|
|
// get timer value so we can get the real age
|
|
timer_get_counter_value(TIMER_GROUP_0, TIMER_1, &timer_val);
|
|
timer_pause(TIMER_GROUP_0, TIMER_1);
|
|
|
|
// get actual age after alarm
|
|
//age = ((int64_t)timer_val - (-age) * 10) / 10; // timer with 100ns ticks
|
|
age = (int64_t)timer_val - (-age); // timer with 1µs ticks
|
|
|
|
if (i2s_write(I2S_NUM_0, p_payload, (size_t)size, &written, portMAX_DELAY) != ESP_OK) {
|
|
ESP_LOGE(TAG, "i2s_playback_task: I2S write error");
|
|
}
|
|
size -= written;
|
|
p_payload += written;
|
|
|
|
if ((chnk != NULL) && (size == 0))
|
|
{
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
|
|
ret = xQueueReceive(pcmChunkQueueHandle, &chnk, portMAX_DELAY);
|
|
if( ret != pdFAIL ) {
|
|
p_payload = chnk->payload;
|
|
size = chnk->size;
|
|
if (i2s_write(I2S_NUM_0, p_payload, (size_t)size, &written, portMAX_DELAY) != ESP_OK) {
|
|
ESP_LOGE(TAG, "i2s_playback_task: I2S write error");
|
|
}
|
|
size -= written;
|
|
p_payload += written;
|
|
|
|
if ((chnk != NULL) && (size == 0)) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
initialSync = 1;
|
|
|
|
ESP_LOGI(TAG, "initial sync %lldus", age);
|
|
|
|
continue;
|
|
}
|
|
}
|
|
else if ((age > 0) && (initialSync == 0)) {
|
|
if (chnk != NULL) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
|
|
int64_t t;
|
|
get_diff_to_server(&t);
|
|
ESP_LOGW(TAG, "RESYNCING HARD 1 %lldus, %lldus", age, t);
|
|
|
|
dir = 0;
|
|
|
|
initialSync = 0;
|
|
alarmValSub = 0;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (initialSync == 1) {
|
|
const uint8_t enableControlLoop = 1;
|
|
const int64_t age_expect = -chunkDuration_us * 2;
|
|
const int64_t maxOffset = 100; //µs, softsync 1
|
|
const int64_t maxOffset_dropSample = 1000; //µs, softsync 2
|
|
const int64_t hardResyncThreshold = 1500; //µs, hard sync
|
|
|
|
avg = MEDIANFILTER_Insert(&shortMedianFilter, age + (-age_expect));
|
|
if ( MEDIANFILTER_isFull(&shortMedianFilter) == 0 ) {
|
|
avg = age + (-age_expect);
|
|
}
|
|
else {
|
|
// resync hard if we are off too far
|
|
if ((avg < -hardResyncThreshold) || (avg > hardResyncThreshold) || (initialSync == 0)) {
|
|
if (chnk != NULL) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
|
|
int64_t t;
|
|
get_diff_to_server(&t);
|
|
ESP_LOGW(TAG, "RESYNCING HARD 2 %lldus, %lldus, %lldus", age, avg, t);
|
|
|
|
initialSync = 0;
|
|
alarmValSub = 0;
|
|
|
|
i2sDmaBufferCnt = i2sDmaBufCnt * 1; // ensure dma is empty
|
|
do {
|
|
// wait until DMA queue is empty
|
|
ret = xQueueReceive(i2s_event_queue, &i2sEvent, portMAX_DELAY );
|
|
if( ret != pdFAIL ) {
|
|
if (i2sEvent.type == I2S_EVENT_TX_DONE) {
|
|
ESP_LOGI(TAG, "I2S_EVENT_TX_DONE, %u", i2sDmaBufferCnt);
|
|
|
|
i2sDmaBufferCnt--;
|
|
}
|
|
}
|
|
} while(i2sDmaBufferCnt > 0);
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
int samples = 1;
|
|
int sampleSize = 4;
|
|
int ageDiff = 0;
|
|
size_t written;
|
|
|
|
if (enableControlLoop == 1) {
|
|
if (avg < -maxOffset) { // we are early
|
|
dir = -1;
|
|
|
|
/*
|
|
//if ( MEDIANFILTER_isFull(&shortMedianFilter))
|
|
{
|
|
if (avg < -maxOffset_dropSample) {
|
|
//ageDiff = (int)(age_expect - avg);
|
|
ageDiff = -(int)avg;
|
|
samples = ageDiff / (sampleDuration_ns / 1000);
|
|
if (samples > 4) {
|
|
samples = 4;
|
|
}
|
|
|
|
ESP_LOGI(TAG, "insert %d samples", samples);
|
|
|
|
// TODO: clean insert at periodic positions, so stretching won't be audible.
|
|
char *newBuf = NULL;
|
|
newBuf = (char *)heap_caps_malloc(sizeof(char) * (size + samples * sampleSize), MALLOC_CAP_SPIRAM);
|
|
memcpy(newBuf, p_payload, size);
|
|
free(p_payload);
|
|
p_payload = newBuf;
|
|
memcpy(&p_payload[size], &p_payload[size - 1 - samples * sampleSize], samples * sampleSize);
|
|
size += samples * sampleSize;
|
|
|
|
chnk->payload = p_payload;
|
|
chnk->size = size;
|
|
}
|
|
}
|
|
*/
|
|
}
|
|
else if ((avg >= -maxOffset) && (avg <= maxOffset)) {
|
|
dir = 0;
|
|
}
|
|
else if (avg > maxOffset) { // we are late
|
|
dir = 1;
|
|
|
|
/*
|
|
//if ( MEDIANFILTER_isFull(&shortMedianFilter))
|
|
{
|
|
if (avg > maxOffset_dropSample) {
|
|
//ageDiff = (int)(avg - age_expect);
|
|
ageDiff = (int)avg;
|
|
samples = ageDiff / (sampleDuration_ns / 1000);
|
|
if (samples > 4) {
|
|
samples = 4;
|
|
}
|
|
|
|
if (size >= samples * sampleSize) {
|
|
// drop samples
|
|
p_payload += samples * sampleSize;
|
|
size -= samples * sampleSize;
|
|
|
|
ESP_LOGI(TAG, "drop %d samples", samples);
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
}
|
|
|
|
adjust_apll(dir);
|
|
}
|
|
|
|
if (i2s_write(I2S_NUM_0, p_payload, (size_t)size, &written, portMAX_DELAY) != ESP_OK) {
|
|
ESP_LOGE(TAG, "i2s_playback_task: I2S write error");
|
|
}
|
|
size -= written;
|
|
p_payload += written;
|
|
|
|
if ((chnk != NULL) && (size == 0)) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
}
|
|
|
|
int64_t t;
|
|
get_diff_to_server(&t);
|
|
ESP_LOGI(TAG, "%d: %lldus, %lldus %lldus", dir, age, avg, t);
|
|
|
|
if ((chnk != NULL) && (size == 0)) {
|
|
free(chnk->payload);
|
|
free(chnk);
|
|
chnk = NULL;
|
|
}
|
|
}
|
|
else {
|
|
int64_t t;
|
|
get_diff_to_server(&t);
|
|
ESP_LOGE(TAG, "Couldn't get PCM chunk, recv: messages waiting %d, %d, latency %lldus", uxQueueMessagesWaiting(pcmChunkQueueHandle), uxQueueMessagesWaiting(timestampQueueHandle), t);
|
|
|
|
dir = 0;
|
|
|
|
initialSync = 0;
|
|
alarmValSub = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void time_sync_msg_cb(void *args) {
|
|
static BaseType_t xHigherPriorityTaskWoken;
|
|
|
|
//xSemaphoreGive(timeSyncSemaphoreHandle); // causes kernel panic, which shouldn't happen though? Isn't it called from timer task instead of ISR?
|
|
xSemaphoreGiveFromISR(timeSyncSemaphoreHandle, &xHigherPriorityTaskWoken);
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static void http_get_task(void *pvParameters) {
|
|
struct sockaddr_in servaddr;
|
|
char *start;
|
|
int sock = -1;
|
|
char base_message_serialized[BASE_MESSAGE_SIZE];
|
|
char *hello_message_serialized = NULL;
|
|
int result, size, id_counter;
|
|
struct timeval now, tv1, tv2, tv3;
|
|
time_message_t time_message;
|
|
struct timeval tmpDiffToServer;
|
|
const int64_t outputBufferDacTime_us = DAC_OUT_BUFFER_TIME_US; // in ms
|
|
// snapcast_sync_task_cfg_t snapcastTaskCfg;
|
|
struct timeval lastTimeSync = { 0, 0 };
|
|
wire_chunk_message_t wire_chunk_message_last = {{0,0}, 0, NULL};
|
|
esp_timer_handle_t timeSyncMessageTimer = NULL;
|
|
const esp_timer_create_args_t tSyncArgs = {
|
|
.callback = &time_sync_msg_cb,
|
|
.name = "tSyncMsg"
|
|
};
|
|
int16_t frameSize = 960; // 960*2: 20ms, 960*1: 10ms
|
|
int16_t *audio = NULL;
|
|
int16_t pcm_size = 120;
|
|
uint16_t channels = CHANNELS;
|
|
esp_err_t err = 0;
|
|
codec_header_message_t codec_header_message;
|
|
server_settings_message_t server_settings_message;
|
|
bool received_header = false;
|
|
base_message_t base_message;
|
|
hello_message_t hello_message;
|
|
mdns_result_t *r;
|
|
|
|
|
|
|
|
// create semaphore for time diff buffer to server
|
|
latencyBufSemaphoreHandle = xSemaphoreCreateMutex();
|
|
|
|
// create a timer to send time sync messages every x µs
|
|
esp_timer_create(&tSyncArgs, &timeSyncMessageTimer);
|
|
timeSyncSemaphoreHandle = xSemaphoreCreateMutex();
|
|
xSemaphoreGive(timeSyncSemaphoreHandle);
|
|
|
|
id_counter = 0;
|
|
|
|
// create snapcast receive buffer
|
|
pcmChunkQueueHandle = xQueueCreateStatic( PCM_CHNK_QUEUE_LENGTH,
|
|
sizeof(wire_chunk_message_t *),
|
|
pcmChunkQueueStorageArea,
|
|
&pcmChunkQueue
|
|
);
|
|
|
|
// init diff buff median filter
|
|
latencyMedianFilterLong.numNodes = MEDIAN_FILTER_LONG_BUF_LEN;
|
|
latencyMedianFilterLong.medianBuffer = latencyMedianLongBuffer;
|
|
|
|
ESP_LOGI(TAG, "Enable mdns") ;
|
|
mdns_init();
|
|
|
|
while(1) {
|
|
if (MEDIANFILTER_Init(&latencyMedianFilterLong) < 0) {
|
|
ESP_LOGE(TAG, "reset_diff_buffer: couldn't init median filter long. STOP");
|
|
|
|
return;
|
|
}
|
|
|
|
esp_timer_stop(timeSyncMessageTimer);
|
|
|
|
xSemaphoreGive(timeSyncSemaphoreHandle);
|
|
|
|
if (opusDecoder != NULL) {
|
|
opus_decoder_destroy(opusDecoder);
|
|
opusDecoder = NULL;
|
|
}
|
|
|
|
reset_latency_buffer();
|
|
if (xSemaphoreTake( latencyBufSemaphoreHandle, pdMS_TO_TICKS(1) ) == pdTRUE) {
|
|
latencyBuffFull = false;
|
|
latencyToServer = 0;
|
|
|
|
xSemaphoreGive( latencyBufSemaphoreHandle );
|
|
}
|
|
else {
|
|
ESP_LOGW(TAG, "couldn't reset latency");
|
|
}
|
|
|
|
// Find snapcast server
|
|
// Connect to first snapcast server found
|
|
r = NULL;
|
|
err = 0;
|
|
while ( !r || err ) {
|
|
ESP_LOGI(TAG, "Lookup snapcast service on network");
|
|
esp_err_t err = mdns_query_ptr("_snapcast", "_tcp", 3000, 20, &r);
|
|
if(err) {
|
|
ESP_LOGE(TAG, "Query Failed");
|
|
}
|
|
|
|
if(!r){
|
|
ESP_LOGW(TAG, "No results found!");
|
|
}
|
|
|
|
vTaskDelay(1000/portTICK_PERIOD_MS);
|
|
}
|
|
|
|
char serverAddr[] = "192.168.1.2";
|
|
ESP_LOGI(TAG,"Found %s:%d", inet_ntop(AF_INET, &(r->addr->addr.u_addr.ip4.addr), serverAddr, sizeof(serverAddr)), r->port);
|
|
|
|
servaddr.sin_family = AF_INET;
|
|
servaddr.sin_addr.s_addr = r->addr->addr.u_addr.ip4.addr;
|
|
servaddr.sin_port = htons(r->port);
|
|
mdns_query_results_free(r);
|
|
|
|
ESP_LOGI(TAG, "allocate socket");
|
|
sock = socket(AF_INET, SOCK_STREAM, 0);
|
|
if(sock < 0) {
|
|
ESP_LOGE(TAG, "... Failed to allocate socket.");
|
|
vTaskDelay(1000 / portTICK_PERIOD_MS);
|
|
continue;
|
|
}
|
|
ESP_LOGI(TAG, "... allocated socket %d", sock);
|
|
|
|
ESP_LOGI(TAG, "connect to socket");
|
|
err = connect(sock, (struct sockaddr*)&servaddr, sizeof(struct sockaddr_in));
|
|
if (err < 0) {
|
|
ESP_LOGE(TAG, "%s, %d", strerror(errno), errno);
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
vTaskDelay(4000 / portTICK_PERIOD_MS);
|
|
|
|
continue;
|
|
}
|
|
|
|
ESP_LOGI(TAG, "... connected");
|
|
|
|
result = gettimeofday(&now, NULL);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to gettimeofday\r\n");
|
|
return;
|
|
}
|
|
|
|
received_header = false;
|
|
|
|
// init base mesage
|
|
base_message.type = SNAPCAST_MESSAGE_HELLO;
|
|
base_message.id = 0x0000;
|
|
base_message.refersTo = 0x0000;
|
|
base_message.sent.sec = now.tv_sec;
|
|
base_message.sent.usec = now.tv_usec;
|
|
base_message.received.sec = 0;
|
|
base_message.received.usec = 0;
|
|
base_message.size = 0x00000000;
|
|
|
|
// init hello message
|
|
hello_message.mac = mac_address;
|
|
hello_message.hostname = "ESP32-Caster";
|
|
hello_message.version = (char *)VERSION_STRING;
|
|
hello_message.client_name = "libsnapcast";
|
|
hello_message.os = "esp32";
|
|
hello_message.arch = "xtensa";
|
|
hello_message.instance = 1;
|
|
hello_message.id = mac_address;
|
|
hello_message.protocol_version = 2;
|
|
|
|
if (hello_message_serialized == NULL) {
|
|
hello_message_serialized = hello_message_serialize(&hello_message, (size_t*) &(base_message.size));
|
|
if (!hello_message_serialized) {
|
|
ESP_LOGE(TAG, "Failed to serialize hello message\r\b");
|
|
return;
|
|
}
|
|
}
|
|
|
|
result = base_message_serialize(
|
|
&base_message,
|
|
base_message_serialized,
|
|
BASE_MESSAGE_SIZE
|
|
);
|
|
if (result) {
|
|
ESP_LOGE(TAG, "Failed to serialize base message\r\n");
|
|
return;
|
|
}
|
|
|
|
result = send(sock, base_message_serialized, BASE_MESSAGE_SIZE, 0);
|
|
if (result < 0) {
|
|
ESP_LOGW(TAG, "error writing base msg to socket: %s", strerror(errno));
|
|
|
|
free(hello_message_serialized);
|
|
hello_message_serialized = NULL;
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
continue;
|
|
}
|
|
|
|
result = send(sock, hello_message_serialized, base_message.size, 0);
|
|
if (result < 0) {
|
|
ESP_LOGW(TAG, "error writing hello msg to socket: %s", strerror(errno));
|
|
|
|
free(hello_message_serialized);
|
|
hello_message_serialized = NULL;
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
continue;
|
|
}
|
|
|
|
free(hello_message_serialized);
|
|
hello_message_serialized = NULL;
|
|
|
|
for (;;) {
|
|
size = 0;
|
|
result = 0;
|
|
while (size < BASE_MESSAGE_SIZE) {
|
|
//result = read(sock, &(buff[size]), BASE_MESSAGE_SIZE - size);
|
|
result = recv(sock, &(buff[size]), BASE_MESSAGE_SIZE - size, 0);
|
|
if (result < 0) {
|
|
break;
|
|
|
|
}
|
|
size += result;
|
|
}
|
|
|
|
if (result < 0) {
|
|
if (errno != 0 ) {
|
|
ESP_LOGW(TAG, "1: %s, %d", strerror(errno), (int)errno);
|
|
}
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
break; // stop for(;;) will try to reconnect then
|
|
}
|
|
|
|
if (result > 0) {
|
|
result = gettimeofday(&now, NULL);
|
|
//ESP_LOGI(TAG, "time of day: %ld %ld", now.tv_sec, now.tv_usec);
|
|
if (result) {
|
|
ESP_LOGW(TAG, "Failed to gettimeofday");
|
|
continue;
|
|
}
|
|
|
|
result = base_message_deserialize(&base_message, buff, size);
|
|
if (result) {
|
|
ESP_LOGW(TAG, "Failed to read base message: %d", result);
|
|
continue;
|
|
}
|
|
|
|
base_message.received.usec = now.tv_usec;
|
|
// ESP_LOGI(TAG,"%d %d : %d %d : %d %d",base_message.size, base_message.refersTo,
|
|
// base_message.sent.sec,base_message.sent.usec,
|
|
// base_message.received.sec,base_message.received.usec);
|
|
|
|
start = buff;
|
|
size = 0;
|
|
|
|
// TODO: dynamically allocate memory for the next read!!!
|
|
// generate an error for now if we try to read more than BUFF_LEN in next lines
|
|
if (base_message.size > BUFF_LEN) {
|
|
ESP_LOGE(TAG, "base_message.size too big %d", base_message.size);
|
|
|
|
return;
|
|
}
|
|
|
|
while (size < base_message.size) {
|
|
if (size >= BUFF_LEN) {
|
|
ESP_LOGE(TAG, "Index too high");
|
|
|
|
return;
|
|
}
|
|
|
|
result = recv(sock, &(buff[size]), base_message.size - size, 0);
|
|
if (result < 0) {
|
|
ESP_LOGW(TAG, "Failed to read from server: %d", result);
|
|
|
|
break;
|
|
}
|
|
|
|
size += result;
|
|
}
|
|
|
|
if (result < 0) {
|
|
if (errno != 0 ) {
|
|
ESP_LOGI(TAG, "2: %s, %d", strerror(errno), (int)errno);
|
|
}
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
break; // stop for(;;) will try to reconnect then
|
|
}
|
|
|
|
switch (base_message.type) {
|
|
case SNAPCAST_MESSAGE_CODEC_HEADER:
|
|
result = codec_header_message_deserialize(&codec_header_message, start, size);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to read codec header: %d", result);
|
|
return;
|
|
}
|
|
|
|
size = codec_header_message.size;
|
|
start = codec_header_message.payload;
|
|
|
|
//ESP_LOGI(TAG, "Received codec header message with size %d", codec_header_message.size);
|
|
|
|
if (strcmp(codec_header_message.codec, "flac") == 0) {
|
|
// TODO: maybe restart the whole thing if a new codec header is received while stream session is ongoing
|
|
|
|
ESP_LOGI(TAG, "Codec : %s", codec_header_message.codec);
|
|
|
|
raw_stream_write(raw_stream_writer_to_decoder, codec_header_message.payload, size);
|
|
}
|
|
else if (strcmp(codec_header_message.codec, "opus") == 0) {
|
|
uint32_t rate;
|
|
memcpy(&rate, start+4,sizeof(rate));
|
|
uint16_t bits;
|
|
memcpy(&bits, start+8,sizeof(bits));
|
|
memcpy(&channels, start+10,sizeof(channels));
|
|
ESP_LOGI(TAG, "%s sampleformat: %d:%d:%d",codec_header_message.codec, rate, bits, channels);
|
|
|
|
int error = 0;
|
|
if (opusDecoder != NULL) {
|
|
opus_decoder_destroy(opusDecoder);
|
|
opusDecoder = NULL;
|
|
}
|
|
opusDecoder = opus_decoder_create(rate, channels, &error);
|
|
if (error != 0) {
|
|
ESP_LOGI(TAG, "Failed to init %s decoder", codec_header_message.codec);
|
|
|
|
}
|
|
ESP_LOGI(TAG, "Initialized %s decoder", codec_header_message.codec);
|
|
|
|
//ESP_LOGI(TAG, "Codec : %s not implemented yet", codec_header_message.codec);
|
|
|
|
// return;
|
|
|
|
//ESP_LOGI(TAG, "Codec setting %d:%d:%d", rate,bits,channels);
|
|
}
|
|
else {
|
|
ESP_LOGI(TAG, "Codec : %s not supported", codec_header_message.codec);
|
|
ESP_LOGI(TAG, "Change encoder codec to flac in /etc/snapserver.conf on server");
|
|
return;
|
|
}
|
|
|
|
if (codecString != NULL) {
|
|
free(codecString);
|
|
codecString = NULL;
|
|
}
|
|
|
|
codecString = (char *)calloc(strlen(codec_header_message.codec) + 1, sizeof(char));
|
|
if (codecString == NULL) {
|
|
ESP_LOGW(TAG, "couldn't get memory for codec String");
|
|
}
|
|
else {
|
|
strcpy(codecString, codec_header_message.codec);
|
|
}
|
|
|
|
tv1.tv_sec = base_message.sent.sec;
|
|
tv1.tv_usec = base_message.sent.usec;
|
|
settimeofday(&tv1, NULL);
|
|
ESP_LOGI(TAG, "syncing clock to server %ld.%06ld", tv1.tv_sec, tv1.tv_usec);
|
|
// gettimeofday(&tv1, NULL);
|
|
// ESP_LOGI(TAG, "get time of day %ld.%06ld", tv1.tv_sec, tv1.tv_usec);
|
|
|
|
codec_header_message_free(&codec_header_message);
|
|
|
|
received_header = true;
|
|
|
|
break;
|
|
|
|
case SNAPCAST_MESSAGE_WIRE_CHUNK:
|
|
{
|
|
if (!received_header) {
|
|
continue;
|
|
}
|
|
|
|
wire_chunk_message_t wire_chunk_message;
|
|
|
|
result = wire_chunk_message_deserialize(&wire_chunk_message, start, size);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to read wire chunk: %d\r\n", result);
|
|
|
|
wire_chunk_message_free(&wire_chunk_message);
|
|
break;
|
|
}
|
|
|
|
// ESP_LOGI(TAG, "wire chnk with size: %d, timestamp %d.%d", wire_chunk_message.size, wire_chunk_message.timestamp.sec, wire_chunk_message.timestamp.usec);
|
|
|
|
// TODO: detect pcm chunk duration dynamically and allocate buffers accordingly.
|
|
struct timeval tv_d1, tv_d2, tv_d3;
|
|
tv_d1.tv_sec = wire_chunk_message.timestamp.sec;
|
|
tv_d1.tv_usec = wire_chunk_message.timestamp.usec;
|
|
tv_d2.tv_sec = wire_chunk_message_last.timestamp.sec;
|
|
tv_d2.tv_usec = wire_chunk_message_last.timestamp.usec;
|
|
timersub(&tv_d1, &tv_d2, &tv_d3);
|
|
wire_chunk_message_last.timestamp = wire_chunk_message.timestamp;
|
|
// ESP_LOGI(TAG, "chunk duration %ld.%06ld", tv_d3.tv_sec, tv_d3.tv_usec);
|
|
if ((tv_d3.tv_sec * 1000000 + tv_d3.tv_usec) > (WIRE_CHUNK_DURATION_MS * 1000)) {
|
|
ESP_LOGE(TAG, "wire chnk with size: %d, timestamp %d.%d, duration %ld.%06ld", wire_chunk_message.size, wire_chunk_message.timestamp.sec, wire_chunk_message.timestamp.usec, tv_d3.tv_sec, tv_d3.tv_usec);
|
|
|
|
wire_chunk_message_free(&wire_chunk_message);
|
|
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// // store chunk's timestamp, decoder callback will need it later
|
|
tv_t timestamp;
|
|
timestamp = wire_chunk_message.timestamp;
|
|
|
|
// if (wirechnkCnt == 0) {
|
|
// ESP_LOGI(TAG, "set decoder timeout");
|
|
//
|
|
//// audio_element_set_input_timeout(decoder, pdMS_TO_TICKS(100));
|
|
//// audio_element_set_output_timeout(decoder, pdMS_TO_TICKS(100));
|
|
// }
|
|
// wirechnkCnt++;
|
|
// ESP_LOGI(TAG, "got wire chunk %d, cnt %lld",(int)wire_chunk_message.size, wirechnkCnt );
|
|
// ESP_LOGI(TAG, "got wire chunk cnt %lld", wirechnkCnt );
|
|
// ESP_LOGI(TAG, "wirechnkCnt: %lld", wirechnkCnt);
|
|
|
|
//if (strcmp(codecString, "flac") == 0) {
|
|
if (0) { // flac not supported
|
|
int bytesWritten;
|
|
bytesWritten = raw_stream_write(raw_stream_writer_to_decoder, wire_chunk_message.payload, (int)wire_chunk_message.size);
|
|
if (bytesWritten < 0) {
|
|
ESP_LOGE(TAG, "wirechnk decode ring buf timeout. bytes in buffer: %d/%d", rb_bytes_filled(audio_element_get_output_ringbuf(raw_stream_writer_to_decoder)),
|
|
audio_element_get_output_ringbuf_size(raw_stream_writer_to_decoder));
|
|
}
|
|
else if (bytesWritten < (int)wire_chunk_message.size) {
|
|
ESP_LOGE(TAG, "wirechnk decode ring buf full");
|
|
}
|
|
else {
|
|
if (xQueueSendToBack( timestampQueueHandle, ×tamp, pdMS_TO_TICKS(3000)) != pdTRUE) {
|
|
ESP_LOGW(TAG, "timestamp queue full, messages waiting %d, dropping data ...", uxQueueMessagesWaiting(timestampQueueHandle));
|
|
}
|
|
else {
|
|
//ESP_LOGI(TAG, "timestamps waiting %d", uxQueueMessagesWaiting(timestampQueueHandle));
|
|
}
|
|
}
|
|
}
|
|
else if (strcmp(codecString, "opus") == 0) {
|
|
int frame_size = 0;
|
|
|
|
audio = (int16_t *)heap_caps_malloc(frameSize * CHANNELS * (BITS_PER_SAMPLE / 8), MALLOC_CAP_SPIRAM); // 960*2: 20ms, 960*1: 10ms
|
|
if (audio == NULL) {
|
|
ESP_LOGE(TAG, "Failed to allocate memory for opus audio decoder");
|
|
}
|
|
else {
|
|
size = wire_chunk_message.size;
|
|
start = (wire_chunk_message.payload);
|
|
|
|
while ((frame_size = opus_decode(opusDecoder, (unsigned char *)start, size, (opus_int16*)audio,
|
|
pcm_size/channels, 0)) == OPUS_BUFFER_TOO_SMALL)
|
|
{
|
|
pcm_size = pcm_size * 2;
|
|
|
|
audio = (int16_t *)realloc(audio, pcm_size * CHANNELS * sizeof(int16_t)); // 960*2: 20ms, 960*1: 10ms
|
|
|
|
ESP_LOGI(TAG, "OPUS encoding buffer too small, resizing to %d samples per channel", pcm_size/channels);
|
|
}
|
|
|
|
if (frame_size < 0 ) {
|
|
ESP_LOGE(TAG, "Decode error : %d, %d, %s, %s, %d\n", frame_size, size, start, (char *)audio, pcm_size/channels);
|
|
|
|
free(audio);
|
|
}
|
|
else {
|
|
wire_chunk_message_t *pcm_chunk_message;
|
|
|
|
pcm_chunk_message = (wire_chunk_message_t *)heap_caps_malloc(sizeof(wire_chunk_message_t), MALLOC_CAP_SPIRAM);
|
|
if (pcm_chunk_message == NULL) {
|
|
ESP_LOGE(TAG, "Failed to allocate memory for pcm chunk message");
|
|
}
|
|
else {
|
|
pcm_chunk_message->size = frame_size * 2 * sizeof(uint16_t);
|
|
pcm_chunk_message->timestamp = timestamp;
|
|
pcm_chunk_message->payload = (char *)audio;
|
|
if (xQueueSendToBack( pcmChunkQueueHandle, &pcm_chunk_message, pdMS_TO_TICKS(1000)) != pdTRUE) {
|
|
ESP_LOGW(TAG, "send: pcmChunkQueue full, messages waiting %d", uxQueueMessagesWaiting(pcmChunkQueueHandle));
|
|
|
|
// free(pcm_chunk_message->payload);
|
|
// free(pcm_chunk_message);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "Decoder not supported");
|
|
}
|
|
|
|
|
|
wire_chunk_message_free(&wire_chunk_message);
|
|
|
|
break;
|
|
}
|
|
|
|
case SNAPCAST_MESSAGE_SERVER_SETTINGS:
|
|
// The first 4 bytes in the buffer are the size of the string.
|
|
// We don't need this, so we'll shift the entire buffer over 4 bytes
|
|
// and use the extra room to add a null character so cJSON can pares it.
|
|
memmove(start, start + 4, size - 4);
|
|
start[size - 3] = '\0';
|
|
result = server_settings_message_deserialize(&server_settings_message, start);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to read server settings: %d\r\n", result);
|
|
return;
|
|
}
|
|
// log mute state, buffer, latency
|
|
buffer_ms = server_settings_message.buffer_ms;
|
|
ESP_LOGI(TAG, "Buffer length: %d", server_settings_message.buffer_ms);
|
|
//ESP_LOGI(TAG, "Ringbuffer size:%d", server_settings_message.buffer_ms*48*4);
|
|
ESP_LOGI(TAG, "Latency: %d", server_settings_message.latency);
|
|
ESP_LOGI(TAG, "Mute: %d", server_settings_message.muted);
|
|
ESP_LOGI(TAG, "Setting volume: %d", server_settings_message.volume);
|
|
muteCH[0] = server_settings_message.muted;
|
|
muteCH[1] = server_settings_message.muted;
|
|
muteCH[2] = server_settings_message.muted;
|
|
muteCH[3] = server_settings_message.muted;
|
|
|
|
// Volume setting using ADF HAL abstraction
|
|
audio_hal_set_mute(board_handle->audio_hal, server_settings_message.muted);
|
|
audio_hal_set_volume(board_handle->audio_hal, server_settings_message.volume);
|
|
|
|
if (syncTaskHandle == NULL) {
|
|
ESP_LOGI(TAG, "Start snapcast_sync_task");
|
|
|
|
// snapcastTaskCfg.outputBufferDacTime_us = outputBufferDacTime_us;
|
|
// snapcastTaskCfg.buffer_us = (int64_t)buffer_ms * 1000LL;
|
|
xTaskCreatePinnedToCore(snapcast_sync_task, "snapcast_sync_task", 8 * 1024, NULL, SYNC_TASK_PRIORITY, &syncTaskHandle, SYNC_TASK_CORE_ID);
|
|
}
|
|
|
|
// notify task of changed parameters
|
|
xTaskNotify( syncTaskHandle,
|
|
buffer_ms,
|
|
eSetBits
|
|
);
|
|
|
|
break;
|
|
|
|
case SNAPCAST_MESSAGE_TIME:
|
|
result = time_message_deserialize(&time_message, start, size);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to deserialize time message\r\n");
|
|
return;
|
|
}
|
|
// ESP_LOGI(TAG, "BaseTX : %d %d ", base_message.sent.sec , base_message.sent.usec);
|
|
// ESP_LOGI(TAG, "BaseRX : %d %d ", base_message.received.sec , base_message.received.usec);
|
|
// ESP_LOGI(TAG, "baseTX->RX : %d s ", (base_message.received.sec - base_message.sent.sec));
|
|
// ESP_LOGI(TAG, "baseTX->RX : %d ms ", (base_message.received.usec - base_message.sent.usec)/1000);
|
|
// ESP_LOGI(TAG, "Latency : %d.%d ", time_message.latency.sec, time_message.latency.usec/1000);
|
|
|
|
// tv == server to client latency (s2c)
|
|
// time_message.latency == client to server latency(c2s)
|
|
// TODO the fact that I have to do this simple conversion means
|
|
// I should probably use the timeval struct instead of my own
|
|
tv1.tv_sec = base_message.received.sec;
|
|
tv1.tv_usec = base_message.received.usec;
|
|
tv3.tv_sec = base_message.sent.sec;
|
|
tv3.tv_usec = base_message.sent.usec;
|
|
timersub(&tv1, &tv3, &tv2);
|
|
tv1.tv_sec = time_message.latency.sec;
|
|
tv1.tv_usec = time_message.latency.usec;
|
|
|
|
// tv1 == c2s: client to server
|
|
// tv2 == s2c: server to client
|
|
// ESP_LOGI(TAG, "c2s: %ld %ld", tv1.tv_sec, tv1.tv_usec);
|
|
// ESP_LOGI(TAG, "s2c: %ld %ld", tv2.tv_sec, tv2.tv_usec);
|
|
|
|
timersub(&tv1, &tv2, &tmpDiffToServer);
|
|
if ((tmpDiffToServer.tv_sec / 2) == 0) {
|
|
tmpDiffToServer.tv_sec = 0;
|
|
tmpDiffToServer.tv_usec = (suseconds_t)((int64_t)tmpDiffToServer.tv_sec * 1000000LL / 2) + tmpDiffToServer.tv_usec / 2;
|
|
}
|
|
else
|
|
{
|
|
tmpDiffToServer.tv_sec /= 2;
|
|
tmpDiffToServer.tv_usec /= 2;
|
|
}
|
|
|
|
// ESP_LOGI(TAG, "Current latency: %ld.%06ld", tmpDiffToServer.tv_sec, tmpDiffToServer.tv_usec);
|
|
|
|
// following code is storing / initializing / resetting diff to server algorithm
|
|
// we collect a number of latencies and apply a median filter. Based on these we can get server now
|
|
{
|
|
struct timeval diff;
|
|
int64_t medianValue, newValue;
|
|
|
|
// clear diffBuffer if last update is older than a minute
|
|
timersub(&now, &lastTimeSync, &diff);
|
|
|
|
if ( diff.tv_sec > 60 ) {
|
|
ESP_LOGW(TAG, "Last time sync older than a minute. Clearing time buffer");
|
|
|
|
reset_latency_buffer();
|
|
}
|
|
|
|
newValue = ((int64_t)tmpDiffToServer.tv_sec * 1000000LL + (int64_t)tmpDiffToServer.tv_usec);
|
|
medianValue = MEDIANFILTER_Insert(&latencyMedianFilterLong, newValue);
|
|
if (xSemaphoreTake( latencyBufSemaphoreHandle, pdMS_TO_TICKS(1) ) == pdTRUE) {
|
|
if (MEDIANFILTER_isFull(&latencyMedianFilterLong)) {
|
|
latencyBuffFull = true;
|
|
}
|
|
|
|
latencyToServer = medianValue;
|
|
|
|
xSemaphoreGive( latencyBufSemaphoreHandle );
|
|
}
|
|
else {
|
|
ESP_LOGW(TAG, "couldn't set latencyToServer = medianValue");
|
|
}
|
|
|
|
// store current time
|
|
lastTimeSync.tv_sec = now.tv_sec;
|
|
lastTimeSync.tv_usec = now.tv_usec;
|
|
|
|
// we don't care if it was already taken, just make sure it is taken at this point
|
|
xSemaphoreTake( timeSyncSemaphoreHandle, 0 );
|
|
|
|
if (latency_buffer_full() > 0) {
|
|
// we give timeSyncSemaphoreHandle after x µs through timer
|
|
esp_timer_start_periodic(timeSyncMessageTimer, 1000000);
|
|
}
|
|
else {
|
|
// Do a initial time sync with the server at boot
|
|
// give semaphore for immediate next run
|
|
// we need to fill diffBuff fast so we get a good estimate of latency
|
|
xSemaphoreGive(timeSyncSemaphoreHandle);
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (received_header == true) {
|
|
if (xSemaphoreTake(timeSyncSemaphoreHandle, 0) == pdTRUE) {
|
|
result = gettimeofday(&now, NULL);
|
|
//ESP_LOGI(TAG, "time of day: %ld %ld", now.tv_sec, now.tv_usec);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to gettimeofday");
|
|
continue;
|
|
}
|
|
|
|
base_message.type = SNAPCAST_MESSAGE_TIME;
|
|
base_message.id = id_counter++;
|
|
base_message.refersTo = 0;
|
|
base_message.received.sec = 0;
|
|
base_message.received.usec = 0;
|
|
base_message.sent.sec = now.tv_sec;
|
|
base_message.sent.usec = now.tv_usec;
|
|
base_message.size = TIME_MESSAGE_SIZE;
|
|
|
|
result = base_message_serialize(
|
|
&base_message,
|
|
base_message_serialized,
|
|
BASE_MESSAGE_SIZE
|
|
);
|
|
if (result) {
|
|
ESP_LOGE(TAG, "Failed to serialize base message for time\r\n");
|
|
continue;
|
|
}
|
|
|
|
result = time_message_serialize(&time_message, buff, BUFF_LEN);
|
|
if (result) {
|
|
ESP_LOGI(TAG, "Failed to serialize time message\r\b");
|
|
continue;
|
|
}
|
|
|
|
result = send(sock, base_message_serialized, BASE_MESSAGE_SIZE, 0);
|
|
if (result < 0) {
|
|
ESP_LOGW(TAG, "error writing timesync base msg to socket: %s", strerror(errno));
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
break; // stop for(;;) will try to reconnect then
|
|
}
|
|
|
|
result = send(sock, buff, TIME_MESSAGE_SIZE, 0);
|
|
if (result < 0) {
|
|
ESP_LOGW(TAG, "error writing timesync msg to socket: %s", strerror(errno));
|
|
|
|
shutdown(sock, 2);
|
|
closesocket(sock);
|
|
|
|
break; // stop for(;;) will try to reconnect then
|
|
}
|
|
|
|
// ESP_LOGI(TAG, "sent time sync message %ld.%06ld", now.tv_sec, now.tv_usec);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void sntp_sync_time(struct timeval *tv_ntp) {
|
|
if ((sntp_synced%10) == 0) {
|
|
settimeofday(tv_ntp,NULL);
|
|
sntp_synced++;
|
|
ESP_LOGI(TAG,"SNTP time set from server number :%d",sntp_synced);
|
|
return;
|
|
}
|
|
sntp_synced++;
|
|
struct timeval tv_esp;
|
|
gettimeofday(&tv_esp, NULL);
|
|
//ESP_LOGI(TAG,"SNTP diff s: %ld , %ld ", tv_esp.tv_sec , tv_ntp->tv_sec);
|
|
ESP_LOGI(TAG,"SNTP diff us: %ld , %ld ", tv_esp.tv_usec , tv_ntp->tv_usec);
|
|
ESP_LOGI(TAG,"SNTP diff us: %.2f", (double)((tv_esp.tv_usec - tv_ntp->tv_usec)/1000.0));
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void sntp_cb(struct timeval *tv) {
|
|
struct tm timeinfo = { 0 };
|
|
time_t now = tv->tv_sec;
|
|
localtime_r(&now, &timeinfo);
|
|
char strftime_buf[64];
|
|
strftime(strftime_buf, sizeof(strftime_buf), "%c", &timeinfo);
|
|
ESP_LOGI(TAG, "sntp_cb called :%s", strftime_buf);
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void set_time_from_sntp() {
|
|
xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_EVENT,
|
|
false, true, portMAX_DELAY);
|
|
//ESP_LOGI(TAG, "clock %");
|
|
|
|
ESP_LOGI(TAG, "Initializing SNTP");
|
|
sntp_setoperatingmode(SNTP_OPMODE_POLL);
|
|
sntp_setservername(0, "europe.pool.ntp.org");
|
|
sntp_init();
|
|
sntp_set_time_sync_notification_cb(sntp_cb);
|
|
setenv("TZ", "UTC-2", 1);
|
|
tzset();
|
|
|
|
/*
|
|
time_t now = 0;
|
|
struct tm timeinfo = { 0 };
|
|
int retry = 0;
|
|
const int retry_count = 10;
|
|
while(timeinfo.tm_year < (2016 - 1900) && ++retry < retry_count) {
|
|
ESP_LOGI(TAG, "Waiting for system time to be set... (%d/%d)", retry, retry_count);
|
|
vTaskDelay(2000 / portTICK_PERIOD_MS);
|
|
time(&now);
|
|
localtime_r(&now, &timeinfo);
|
|
}
|
|
char strftime_buf[64];
|
|
|
|
strftime(strftime_buf, sizeof(strftime_buf), "%c", &timeinfo);
|
|
ESP_LOGI(TAG, "The current date/time in UTC is: %s", strftime_buf);
|
|
*/
|
|
}
|
|
|
|
|
|
#define CONFIG_MASTER_I2S_BCK_PIN 5
|
|
#define CONFIG_MASTER_I2S_LRCK_PIN 25
|
|
#define CONFIG_MASTER_I2S_DATAOUT_PIN 26
|
|
#define CONFIG_SLAVE_I2S_BCK_PIN 26
|
|
#define CONFIG_SLAVE_I2S_LRCK_PIN 12
|
|
#define CONFIG_SLAVE_I2S_DATAOUT_PIN 5
|
|
|
|
esp_err_t setup_dsp_i2s(uint32_t sample_rate, i2s_port_t i2sNum)
|
|
{
|
|
int chunkInFrames = chunkInBytes / (CHANNELS * (BITS_PER_SAMPLE / 8));
|
|
int __dmaBufCnt;
|
|
int __dmaBufLen;
|
|
const int __dmaBufMaxLen = 1024;
|
|
|
|
__dmaBufCnt = 1;
|
|
__dmaBufLen = chunkInFrames;
|
|
while ((__dmaBufLen >= __dmaBufMaxLen) || (__dmaBufCnt <= 1)) {
|
|
if (( __dmaBufLen % 2 ) == 0) {
|
|
__dmaBufCnt *= 2;
|
|
__dmaBufLen /= 2;
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "setup_dsp_i2s: Can't setup i2s with this configuration");
|
|
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
i2sDmaLAtency = (1000000LL * __dmaBufLen / SAMPLE_RATE) * 0.8; // this value depends on __dmaBufLen, optimized for __dmaBufLen = 480 @opus, 192000bps, complexity 5
|
|
// it will be smaller for lower values of __dmaBufLen. The delay was measured against raspberry client
|
|
// TODO: find a way to calculate this value without the need to measure delay to another client
|
|
|
|
i2sDmaBufCnt = __dmaBufCnt * 2 + 1; // we do double buffering of chunks at I2S DMA, +1 needed because of the way i2s driver works, it will only allocate (i2sDmaBufCnt - 1) queue elements
|
|
|
|
ESP_LOGI(TAG, "setup_dsp_i2s: dma_buf_len is %d, dma_buf_count is %d", __dmaBufLen, __dmaBufCnt*2);
|
|
|
|
i2s_config_t i2s_config0 = {
|
|
.mode = I2S_MODE_MASTER | I2S_MODE_TX, // Only TX
|
|
.sample_rate = sample_rate,
|
|
.bits_per_sample = BITS_PER_SAMPLE,
|
|
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, // 2-channels
|
|
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
|
|
.dma_buf_count = i2sDmaBufCnt,
|
|
.dma_buf_len = __dmaBufLen,
|
|
.intr_alloc_flags = 1, //Default interrupt priority
|
|
.use_apll = true,
|
|
.fixed_mclk = 0,
|
|
.tx_desc_auto_clear = true // Auto clear tx descriptor on underflow
|
|
};
|
|
|
|
i2s_pin_config_t pin_config0 = {
|
|
.bck_io_num = CONFIG_MASTER_I2S_BCK_PIN,
|
|
.ws_io_num = CONFIG_MASTER_I2S_LRCK_PIN,
|
|
.data_out_num = CONFIG_MASTER_I2S_DATAOUT_PIN,
|
|
.data_in_num = -1 //Not used
|
|
};
|
|
|
|
i2s_driver_install(i2sNum, &i2s_config0, 1, &i2s_event_queue);
|
|
i2s_set_pin(i2sNum, &pin_config0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void app_main(void) {
|
|
esp_err_t ret;
|
|
uint8_t base_mac[6];
|
|
|
|
//ESP_ERROR_CHECK(nvs_flash_erase());
|
|
|
|
ret = nvs_flash_init();
|
|
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
|
|
// NVS partition was truncated
|
|
// and needs to be erased
|
|
ESP_ERROR_CHECK(nvs_flash_erase());
|
|
|
|
/* Retry nvs_flash_init */
|
|
ESP_ERROR_CHECK(nvs_flash_init());
|
|
}
|
|
|
|
{ // init wifi
|
|
// Initialize TCP/IP
|
|
ESP_ERROR_CHECK(esp_netif_init());
|
|
// Initialize the event loop
|
|
ESP_ERROR_CHECK(esp_event_loop_create_default());
|
|
s_wifi_event_group = xEventGroupCreate();
|
|
wifi_init();
|
|
}
|
|
|
|
esp_timer_init();
|
|
|
|
tg0_timer_init(); // initialize initial sync timer
|
|
|
|
// Get MAC address for WiFi station
|
|
esp_read_mac(base_mac, ESP_MAC_WIFI_STA);
|
|
sprintf(mac_address, "%02X:%02X:%02X:%02X:%02X:%02X", base_mac[0], base_mac[1], base_mac[2], base_mac[3], base_mac[4], base_mac[5]);
|
|
ESP_LOGI(TAG, "MAC Adress is: %s", mac_address);
|
|
|
|
esp_log_level_set("*", ESP_LOG_WARN);
|
|
esp_log_level_set(TAG, ESP_LOG_INFO);
|
|
|
|
ESP_LOGI(TAG, "Start codec chip");
|
|
board_handle = audio_board_init();
|
|
audio_hal_ctrl_codec(board_handle->audio_hal, AUDIO_HAL_CODEC_MODE_DECODE, AUDIO_HAL_CTRL_START);
|
|
i2s_mclk_gpio_select(I2S_NUM_0, GPIO_NUM_0);
|
|
ret = setup_dsp_i2s(48000, I2S_NUM_0);
|
|
if (ret < 0) {
|
|
return;
|
|
}
|
|
|
|
ESP_LOGI(TAG, "Listen for all pipeline events");
|
|
|
|
|
|
#if CONFIG_USE_SNTP == 1
|
|
// syncing to sntp
|
|
vTaskDelay(5000/portTICK_PERIOD_MS);
|
|
ESP_LOGI(TAG, "Syncing to sntp");
|
|
set_time_from_sntp();
|
|
#else
|
|
{
|
|
// don't use sntp, if server and client are too different, we get overflowing timevals,
|
|
// insted we sync our clock to the server on reception of codec header
|
|
struct timeval tv = {
|
|
.tv_sec = 0,
|
|
.tv_usec = 0,
|
|
};
|
|
char tmbuf[64], buf[128];
|
|
struct tm *nowtm;
|
|
time_t nowtime;
|
|
|
|
settimeofday(&tv, NULL);
|
|
|
|
nowtime = tv.tv_sec;
|
|
nowtm = localtime(&nowtime);
|
|
strftime(tmbuf, sizeof(tmbuf), "%Y-%m-%d %H:%M:%S", nowtm);
|
|
sprintf(buf, "%s.%06ld", tmbuf, tv.tv_usec);
|
|
ESP_LOGI(TAG, "Current time is %s", buf);
|
|
}
|
|
#endif
|
|
|
|
ESP_LOGI(TAG, "Start snapclient task");
|
|
|
|
timestampQueueHandle = xQueueCreateStatic( TIMESTAMP_QUEUE_LENGTH,
|
|
sizeof(tv_t),
|
|
timestampQueueStorageArea,
|
|
×tampQueue
|
|
);
|
|
|
|
xTaskCreatePinnedToCore(http_get_task, "http_get_task", 4*4096, NULL, HTTP_TASK_PRIORITY, NULL, HTTP_TASK_CORE_ID);
|
|
|
|
#if COLLECT_RUNTIME_STATS == 1
|
|
xTaskCreatePinnedToCore(stats_task, "stats", 4096, NULL, STATS_TASK_PRIO, NULL, tskNO_AFFINITY);
|
|
#endif
|
|
|
|
while (1) {
|
|
audio_event_iface_msg_t msg;
|
|
esp_err_t ret;
|
|
|
|
vTaskDelay(portMAX_DELAY);
|
|
|
|
/*
|
|
// listen to events
|
|
ret = audio_event_iface_listen(evt, &msg, portMAX_DELAY);
|
|
if (ret != ESP_OK) {
|
|
ESP_LOGE(TAG, "[ * ] Event interface error : %d", ret);
|
|
continue;
|
|
}
|
|
|
|
if (msg.source_type == AUDIO_ELEMENT_TYPE_ELEMENT && msg.source == (void *) decoder &&
|
|
msg.cmd == AEL_MSG_CMD_REPORT_MUSIC_INFO)
|
|
{
|
|
audio_element_info_t music_info = {0};
|
|
audio_element_getinfo(decoder, &music_info);
|
|
|
|
if (codecString != NULL) {
|
|
ESP_LOGI(TAG, "[ * ] Receive music info from %s decoder, sample_rates=%d, bits=%d, ch=%d",
|
|
codecString, music_info.sample_rates, music_info.bits, music_info.channels);
|
|
}
|
|
else {
|
|
ESP_LOGI(TAG, "[ * ] Receive music info from decoder, sample_rates=%d, bits=%d, ch=%d",
|
|
music_info.sample_rates, music_info.bits, music_info.channels);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
else if (msg.source_type == AUDIO_ELEMENT_TYPE_ELEMENT && msg.source == (void *) decoder &&
|
|
msg.cmd == AEL_MSG_CMD_REPORT_STATUS)
|
|
{
|
|
ESP_LOGW(TAG, "report status: %d", (int)msg.data);
|
|
}
|
|
else if (msg.source_type == AUDIO_ELEMENT_TYPE_ELEMENT && msg.source == (void *) decoder) {
|
|
ESP_LOGW(TAG, "decoder status: %d", msg.cmd);
|
|
}
|
|
*/
|
|
}
|
|
|
|
// TODO: clean up all created tasks and delete them
|
|
}
|
|
|
|
|
|
|