129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_system.h"
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#include "EspAudio.h"
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#include "EspAudioCom.h"
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#include "bt_app_common.h"
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#include "btif_stack_manager.h"
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#include "esp_gap_bt_api.h"
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#include "bta_api.h"
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#include "esp_a2dp_api.h"
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/* utl_set_device_class() */
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#include "utl.h"
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typedef enum {
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BT_APP_EVT_STACK_ON = 0xa0,
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BT_APP_EVT_MAX
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} bt_app_evt_t;
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typedef union {
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esp_a2d_cb_param_t a2d;
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} bt_app_evt_arg;
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static void bt_app_handle_evt(UINT16 event, void *p_param);
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static void bt_app_a2d_cb(uint32_t event, void *param)
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{
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switch (event) {
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case ESP_A2D_CONNECTION_STATE_EVT:
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case ESP_A2D_AUDIO_STATE_EVT:
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case ESP_A2D_AUDIO_CFG_EVT:
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{
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bt_app_transfer_context(bt_app_handle_evt, event, param, sizeof(bt_app_evt_arg), NULL);
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break;
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}
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default:
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BT_APP_TRACE_ERROR("===a2dp invalid cb event: %d\n", event);
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break;
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}
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}
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static void bt_app_a2d_data_cb(uint8_t *data, uint32_t len)
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{
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// uint32_t t_now = system_get_time();
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// printf("t: %u, l %d\n", t_now, len);
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EspAudioPlayerStreamWrite(data, len);
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}
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static void btav_set_device_class(void)
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{
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tBTA_UTL_COD cod;
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memset(&cod, 0, sizeof(tBTA_UTL_COD));
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cod.major = BTM_COD_MAJOR_AUDIO;
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cod.minor = BTM_COD_MINOR_LOUDSPEAKER;
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cod.service = BTM_COD_SERVICE_CAPTURING | BTM_COD_SERVICE_AUDIO;
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utl_set_device_class(&cod, BTA_UTL_SET_COD_ALL);
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BT_APP_TRACE_ERROR("set class of device: major 0x%x, minor 0x%x, service 0x%x\n",
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cod.major, cod.minor, cod.service);
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}
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static void bt_app_handle_evt(UINT16 event, void *p_param)
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{
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BT_APP_TRACE_EVENT("bt_app_handle_evt 0x%x\n", event);
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esp_a2d_cb_param_t *a2d = NULL;
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switch (event) {
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case BT_APP_EVT_STACK_ON: {
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char *dev_name = "ESP_SPEAKER";
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BTM_SetTraceLevel(BT_TRACE_LEVEL_WARNING);
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btav_set_device_class();
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BTA_DmSetDeviceName(dev_name);
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esp_a2d_register_callback(bt_app_a2d_cb);
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esp_a2d_register_data_callback(bt_app_a2d_data_cb);
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esp_a2d_sink_init();
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esp_bt_gap_set_scan_mode(BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
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break;
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}
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case ESP_A2D_CONNECTION_STATE_EVT: {
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a2d = (esp_a2d_cb_param_t *)(p_param);
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BT_APP_TRACE_ERROR("===a2dp conn_state_cb %d ===\n", a2d->conn_stat.state);
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break;
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}
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case ESP_A2D_AUDIO_STATE_EVT: {
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a2d = (esp_a2d_cb_param_t *)(p_param);
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BT_APP_TRACE_ERROR("===a2dp audio_state_cb %d ===\n", a2d->audio_stat.state);
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break;
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}
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case ESP_A2D_AUDIO_CFG_EVT: {
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a2d = (esp_a2d_cb_param_t *)(p_param);
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BT_APP_TRACE_ERROR("===a2dp audio_cfg_cb type %d ===\n", a2d->audio_cfg.mcc.type);
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if (a2d->audio_cfg.mcc.type == ESP_A2D_MCT_SBC) {
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// temporarily hardcoded the PCM configuaration
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BT_APP_TRACE_ERROR("configure audio player\n");
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EspAudioPlayerStreamCfg(StreamSampleRate_44k, 2, StreamBitLen_16BIT);
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EspAudio_SetupStream("stream.pcm", InputSrcType_Stream);
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EspAudio_SetVolume(99);
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}
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break;
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}
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default:
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BT_APP_TRACE_ERROR("===application invalid event: %d\n", event);
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break;
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}
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}
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void app_main_entry(void)
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{
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bt_status_t init, enable;
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init = BTIF_InitStack();
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if (init != BT_STATUS_SUCCESS) {
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return;
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}
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enable = BTIF_EnableStack();
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if (enable != BT_STATUS_SUCCESS) {
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return;
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}
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bt_app_transfer_context(bt_app_handle_evt, BT_APP_EVT_STACK_ON, NULL, 0, NULL);
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}
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