75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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#include <rtthread.h>
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#include <finsh.h>
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#include "common.h"
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#include "param_config.h"
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#include "ble_pub.h"
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#include "drv_oled.h"
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#include <rtdevice.h>
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#include "app_temperature.h"
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#ifdef PKG_USING_EASYFLASH
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#include "easyflash.h"
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#endif
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#include "audio_device.h"
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#include "app_voice_player.h"
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#include "opus.h"
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#include "opus_encoder.h"
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// 设置常量
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#define SAMPLE_RATE 16000
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#define CHANNELS 1
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#define FRAME_SIZE 960 // 20ms的帧大小
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#define MAX_PACKET_SIZE 4000 // 最大的OPUS数据包大小
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// PCM缓冲区
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int16_t pcm_buffer[FRAME_SIZE];
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uint8_t encoded_data[MAX_PACKET_SIZE]; // 用于存储编码后的OPUS数据
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OpusEncoder *encoder = NULL;
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//static const char *TAG = "PCM_to_Opus";
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// 初始化Opus编码器
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int initialize_opus_encoder() {
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int error;
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encoder = opus_encoder_create(SAMPLE_RATE, CHANNELS, OPUS_APPLICATION_AUDIO, &error);
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if (error != OPUS_OK) {
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rt_kprintf( "opus_encoder_create fail: %s", opus_strerror(error));
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return -1;
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}
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return 0;
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}
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// 编码PCM到Opus
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int encode_pcm_to_opus(int16_t *pcm_data, uint8_t *opus_data, int frame_size) {
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int encoded_size = opus_encode(encoder, pcm_data, frame_size, opus_data, MAX_PACKET_SIZE);
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if (encoded_size < 0) {
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rt_kprintf( "opus_encode fail: %s", opus_strerror(encoded_size));
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return encoded_size;
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}
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return encoded_size;
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}
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/* 播放一个文件*/
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void opus_work(void *p)
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{
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while(1){
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rt_memset(pcm_buffer , 0, FRAME_SIZE);
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// PCM数据编码成Opus
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int ret = encode_pcm_to_opus(pcm_buffer, encoded_data, FRAME_SIZE);
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// 将编码后的OPUS数据写入文件
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//fwrite(encoded_data, sizeof(uint8_t), MAX_PACKET_SIZE, opus_file);
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rt_kprintf( "encode_pcm_to_opus : %d", ret);
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}
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}
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void opous_encoder_start(){
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rt_thread_t thread = RT_NULL;
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thread = rt_thread_create("opus_work", opus_work, RT_NULL, 1024 *8, 10, 5);
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if(thread != RT_NULL)
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{
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rt_thread_startup(thread);
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}
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}
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