pinebuds/apps/audioplayers/msbcplay.cpp

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2022-08-15 04:20:27 -05:00
/***************************************************************************
*
* Copyright 2015-2019 BES.
* All rights reserved. All unpublished rights reserved.
*
* No part of this work may be used or reproduced in any form or by any
* means, or stored in a database or retrieval system, without prior written
* permission of BES.
*
* Use of this work is governed by a license granted by BES.
* This work contains confidential and proprietary information of
* BES. which is protected by copyright, trade secret,
* trademark and other intellectual property rights.
*
****************************************************************************/
// Standard C Included Files
#include <string.h>
#include <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include "cmsis_os.h"
#include "cqueue.h"
#include "hal_uart.h"
#include "hal_timer.h"
#include "hal_trace.h"
// BT
#if 0
/* mutex */
osMutexId g_voicemsbc_queue_mutex_id;
osMutexDef(g_voicemsbc_queue_mutex);
/* msbc queue */
#define VOICEMSBC_TEMP_BUFFER_SIZE 128
#define VOICEMSBC_QUEUE_SIZE (VOICEMSBC_TEMP_BUFFER_SIZE*100)
unsigned char voicemsbc_queue_buf[VOICEMSBC_QUEUE_SIZE];
CQueue voicemsbc_queue;
static uint32_t ok_to_decode = 0;
#define LOCK_VOICEMSBC_QUEUE() \
osMutexWait(g_voicemsbc_queue_mutex_id, osWaitForever)
#define UNLOCK_VOICEMSBC_QUEUE() \
osMutexRelease(g_voicemsbc_queue_mutex_id)
static void dump_buffer_to_psram(char *buf, unsigned int len)
{
static unsigned int offset = 0;
memcpy((void *)(0x1c000000 + offset), buf, len);
}
static void copy_one_trace_to_two_track_16bits(uint16_t *src_buf, uint16_t *dst_buf, uint32_t src_len)
{
uint32_t i = 0;
for (i = 0; i < src_len; ++i) {
dst_buf[i*2 + 0] = dst_buf[i*2 + 1] = src_buf[i];
}
}
int store_voicemsbc_buffer(unsigned char *buf, unsigned int len)
{
LOCK_VOICEMSBC_QUEUE();
EnCQueue(&voicemsbc_queue, buf, len);
dump_buffer_to_psram((char *)buf, len);
TRACE(1,"%d\n", LengthOfCQueue(&voicemsbc_queue));
if (LengthOfCQueue(&voicemsbc_queue) > VOICEMSBC_TEMP_BUFFER_SIZE*20) {
ok_to_decode = 1;
}
UNLOCK_VOICEMSBC_QUEUE();
return 0;
}
static short tmp_decode_buf[VOICEMSBC_TEMP_BUFFER_SIZE*2];
int decode_msbc_frame(unsigned char *pcm_buffer, unsigned int pcm_len)
{
int r = 0;
uint32_t decode_len = 0;
unsigned char *e1 = NULL, *e2 = NULL;
unsigned int len1 = 0, len2 = 0;
while (decode_len < pcm_len) {
get_again:
LOCK_VOICEMSBC_QUEUE();
len1 = len2 = 0;
r = PeekCQueue(&voicemsbc_queue, VOICEMSBC_TEMP_BUFFER_SIZE, &e1, &len1, &e2, &len2);
UNLOCK_VOICEMSBC_QUEUE();
if(r == CQ_ERR || len1 == 0) {
//return 0;
Thread::wait(4);
goto get_again;
}
if (len1 != 0) {
//msbcToPcm8k(e1, (short *)(pcm_buffer + decode_len*4), len1, 0);
CvsdToPcm8k(e1, (short *)(tmp_decode_buf), len1, 0);
copy_one_trace_to_two_track_16bits((uint16_t *)tmp_decode_buf, (uint16_t *)(pcm_buffer + decode_len), len1);
LOCK_VOICEMSBC_QUEUE();
DeCQueue(&voicemsbc_queue, 0, len1);
UNLOCK_VOICEMSBC_QUEUE();
decode_len += len1*4;
}
if (len2 != 0) {
//msbcToPcm8k(e2, (short *)(pcm_buffer + decode_len*4), len2, 0);
CvsdToPcm8k(e2, (short *)(tmp_decode_buf), len2, 0);
copy_one_trace_to_two_track_16bits((uint16_t *)tmp_decode_buf, (uint16_t *)(pcm_buffer + decode_len), len2);
LOCK_VOICEMSBC_QUEUE();
DeCQueue(&voicemsbc_queue, 0, len2);
UNLOCK_VOICEMSBC_QUEUE();
decode_len += len2*4;
}
}
return 0;
}
uint32_t voicemsbc_audio_more_data(uint8_t *buf, uint32_t len)
{
uint32_t l = 0;
uint32_t cur_ticks = 0, ticks = 0;
if (ok_to_decode == 0)
return 0;
ticks = hal_sys_timer_get();
l = decode_msbc_frame(buf, len);
cur_ticks = hal_sys_timer_get();
TRACE(1,"msbc %d t\n", (cur_ticks-ticks));
return l;
}
int voicemsbc_audio_init(void)
{
Pcm8k_CvsdInit();
g_voicemsbc_queue_mutex_id = osMutexCreate((osMutex(g_voicemsbc_queue_mutex)));
/* msbc queue*/
InitCQueue(&voicemsbc_queue, VOICEMSBC_QUEUE_SIZE, (unsigned char *)&voicemsbc_queue_buf);
return 0;
}
#endif