audio.c

/* Copyright 2023 Dual Tachyon
 * https://github.com/DualTachyon
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */

#ifdef ENABLE_FMRADIO
#include "app/fm.h"
#endif

#include "audio.h"
#include "bsp/dp32g030/gpio.h"

#ifdef ENABLE_FMRADIO
#include "driver/bk1080.h"
#endif

#include "driver/bk4819.h"
#include "driver/gpio.h"
#include "driver/system.h"
#include "driver/systick.h"
#include "functions.h"
#include "misc.h"
#include "settings.h"
#include "ui/ui.h"


BEEP_Type_t gBeepToPlay = BEEP_NONE;

void AUDIO_PlayBeep(BEEP_Type_t Beep) {

    if (Beep != BEEP_880HZ_60MS_TRIPLE_BEEP &&
        Beep != BEEP_500HZ_60MS_DOUBLE_BEEP &&
        Beep != BEEP_440HZ_500MS &&
        Beep != BEEP_880HZ_200MS &&
        Beep != BEEP_880HZ_500MS &&
        !gEeprom.BEEP_CONTROL)
        return;

#ifdef ENABLE_AIRCOPY
    if (gScreenToDisplay == DISPLAY_AIRCOPY)
        return;
#endif

    if (gCurrentFunction == FUNCTION_RECEIVE || gCurrentFunction == FUNCTION_MONITOR)
        return;


#ifdef ENABLE_FMRADIO
    if (gFmRadioMode)
        BK1080_Mute(true);
#endif

    AUDIO_AudioPathOff();

    if (gCurrentFunction == FUNCTION_POWER_SAVE && gRxIdleMode)
        BK4819_RX_TurnOn();

    SYSTEM_DelayMs(20);

    uint16_t ToneConfig = BK4819_ReadRegister(BK4819_REG_71);

    uint16_t ToneFrequency;
    switch (Beep) {
        default:
        case BEEP_NONE:
            ToneFrequency = 220;
            break;
        case BEEP_1KHZ_60MS_OPTIONAL:
            ToneFrequency = 1000;
            break;
        case BEEP_500HZ_60MS_DOUBLE_BEEP_OPTIONAL:
        case BEEP_500HZ_60MS_DOUBLE_BEEP:
            ToneFrequency = 500;
            break;
        case BEEP_440HZ_40MS_OPTIONAL:
        case BEEP_440HZ_500MS:
            ToneFrequency = 440;
            break;
        case BEEP_880HZ_40MS_OPTIONAL:
        case BEEP_880HZ_60MS_TRIPLE_BEEP:
        case BEEP_880HZ_200MS:
        case BEEP_880HZ_500MS:
            ToneFrequency = 880;
            break;
    }

    BK4819_PlayTone(ToneFrequency, true);

    SYSTEM_DelayMs(2);

    AUDIO_AudioPathOn();

    SYSTEM_DelayMs(60);

    uint16_t Duration;
    switch (Beep) {
        case BEEP_880HZ_60MS_TRIPLE_BEEP:
            BK4819_ExitTxMute();
            SYSTEM_DelayMs(60);
            BK4819_EnterTxMute();
            SYSTEM_DelayMs(20);
            [[fallthrough]];
        case BEEP_500HZ_60MS_DOUBLE_BEEP_OPTIONAL:
        case BEEP_500HZ_60MS_DOUBLE_BEEP:
            BK4819_ExitTxMute();
            SYSTEM_DelayMs(60);
            BK4819_EnterTxMute();
            SYSTEM_DelayMs(20);
            [[fallthrough]];
        case BEEP_1KHZ_60MS_OPTIONAL:
            BK4819_ExitTxMute();
            Duration = 60;
            break;
        case BEEP_880HZ_40MS_OPTIONAL:
        case BEEP_440HZ_40MS_OPTIONAL:
            BK4819_ExitTxMute();
            Duration = 40;
            break;
        case BEEP_880HZ_200MS:
            BK4819_ExitTxMute();
            Duration = 200;
            break;
        case BEEP_440HZ_500MS:
        case BEEP_880HZ_500MS:
        default:
            BK4819_ExitTxMute();
            Duration = 500;
            break;
    }

    SYSTEM_DelayMs(Duration);
    BK4819_EnterTxMute();
    SYSTEM_DelayMs(20);

    AUDIO_AudioPathOff();

    SYSTEM_DelayMs(5);
    BK4819_TurnsOffTones_TurnsOnRX();
    SYSTEM_DelayMs(5);
    BK4819_WriteRegister(BK4819_REG_71, ToneConfig);

    if (gEnableSpeaker)
        AUDIO_AudioPathOn();

#ifdef ENABLE_FMRADIO
    if (gFmRadioMode)
        BK1080_Mute(false);
#endif

    if (gCurrentFunction == FUNCTION_POWER_SAVE && gRxIdleMode)
        BK4819_Sleep();

#ifdef ENABLE_VOX
    gVoxResumeCountdown = 80;
#endif

}

#ifdef ENABLE_VOICE

static const uint8_t VoiceClipLengthChinese[58] =
{
    0x32, 0x32, 0x32, 0x37, 0x37, 0x32, 0x32, 0x32,
    0x32, 0x37, 0x37, 0x32, 0x64, 0x64, 0x64, 0x64,
    0x64, 0x69, 0x64, 0x69, 0x5A, 0x5F, 0x5F, 0x64,
    0x64, 0x69, 0x64, 0x64, 0x69, 0x69, 0x69, 0x64,
    0x64, 0x6E, 0x69, 0x5F, 0x64, 0x64, 0x64, 0x69,
    0x69, 0x69, 0x64, 0x69, 0x64, 0x64, 0x55, 0x5F,
    0x5A, 0x4B, 0x4B, 0x46, 0x46, 0x69, 0x64, 0x6E,
    0x5A, 0x64,
};

static const uint8_t VoiceClipLengthEnglish[76] =
{
    0x50, 0x32, 0x2D, 0x2D, 0x2D, 0x37, 0x37, 0x37,
    0x32, 0x32, 0x3C, 0x37, 0x46, 0x46, 0x4B, 0x82,
    0x82, 0x6E, 0x82, 0x46, 0x96, 0x64, 0x46, 0x6E,
    0x78, 0x6E, 0x87, 0x64, 0x96, 0x96, 0x46, 0x9B,
    0x91, 0x82, 0x82, 0x73, 0x78, 0x64, 0x82, 0x6E,
    0x78, 0x82, 0x87, 0x6E, 0x55, 0x78, 0x64, 0x69,
    0x9B, 0x5A, 0x50, 0x3C, 0x32, 0x55, 0x64, 0x64,
    0x50, 0x46, 0x46, 0x46, 0x4B, 0x4B, 0x50, 0x50,
    0x55, 0x4B, 0x4B, 0x32, 0x32, 0x32, 0x32, 0x37,
    0x41, 0x32, 0x3C, 0x37,
};

VOICE_ID_t        gVoiceID[8];
uint8_t           gVoiceReadIndex;
uint8_t           gVoiceWriteIndex;
volatile uint16_t gCountdownToPlayNextVoice_10ms;
volatile bool     gFlagPlayQueuedVoice;
VOICE_ID_t        gAnotherVoiceID = VOICE_ID_INVALID;


static void AUDIO_PlayVoice(uint8_t VoiceID)
{
    unsigned int i;

    GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_VOICE_0);
    SYSTEM_DelayMs(20);
    GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_VOICE_0);

    for (i = 0; i < 8; i++)
    {
        if ((VoiceID & 0x80U) == 0)
            GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_VOICE_1);
        else
            GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_VOICE_1);

        SYSTICK_DelayUs(1000);
        GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_VOICE_0);
        SYSTICK_DelayUs(1200);
        GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_VOICE_0);
        VoiceID <<= 1;
        SYSTICK_DelayUs(200);
    }
}

void AUDIO_PlaySingleVoice(bool bFlag)
{
    uint8_t VoiceID;
    uint8_t Delay;

    VoiceID = gVoiceID[0];

    if (gEeprom.VOICE_PROMPT != VOICE_PROMPT_OFF && gVoiceWriteIndex > 0)
    {
        if (gEeprom.VOICE_PROMPT == VOICE_PROMPT_CHINESE)
        {	// Chinese
            if (VoiceID >= ARRAY_SIZE(VoiceClipLengthChinese))
                goto Bailout;

            Delay    = VoiceClipLengthChinese[VoiceID];
            VoiceID += VOICE_ID_CHI_BASE;
        }
        else
        {	// English
            if (VoiceID >= ARRAY_SIZE(VoiceClipLengthEnglish))
                goto Bailout;

            Delay    = VoiceClipLengthEnglish[VoiceID];
            VoiceID += VOICE_ID_ENG_BASE;
        }

        if (FUNCTION_IsRx())   // 1of11
            BK4819_SetAF(BK4819_AF_MUTE);

#ifdef ENABLE_FMRADIO
            if (gFmRadioMode)
                BK1080_Mute(true);
#endif

        AUDIO_AudioPathOn();

#ifdef ENABLE_VOX
            gVoxResumeCountdown = 2000;
#endif

        SYSTEM_DelayMs(5);
        AUDIO_PlayVoice(VoiceID);

        if (gVoiceWriteIndex == 1)
            Delay += 3;

        if (bFlag)
        {
            SYSTEM_DelayMs(Delay * 10);

            if (FUNCTION_IsRx())	// 1of11
                RADIO_SetModulation(gRxVfo->Modulation);

#ifdef ENABLE_FMRADIO
                if (gFmRadioMode)
                    BK1080_Mute(false);
#endif

            if (!gEnableSpeaker)
                AUDIO_AudioPathOff();

            gVoiceWriteIndex    = 0;
            gVoiceReadIndex     = 0;

#ifdef ENABLE_VOX
                gVoxResumeCountdown = 80;
#endif

            return;
        }

        gVoiceReadIndex                = 1;
        gCountdownToPlayNextVoice_10ms = Delay;
        gFlagPlayQueuedVoice           = false;

        return;
    }

Bailout:
    gVoiceReadIndex  = 0;
    gVoiceWriteIndex = 0;
}

void AUDIO_SetVoiceID(uint8_t Index, VOICE_ID_t VoiceID)
{
    if (Index >= ARRAY_SIZE(gVoiceID))
        return;

    if (Index == 0)
    {
        gVoiceWriteIndex = 0;
        gVoiceReadIndex  = 0;
    }

    gVoiceID[Index] = VoiceID;

    gVoiceWriteIndex++;
}

uint8_t AUDIO_SetDigitVoice(uint8_t Index, uint16_t Value)
{
    uint16_t Remainder;
    uint8_t  Result;
    uint8_t  Count;

    if (Index == 0)
    {
        gVoiceWriteIndex = 0;
        gVoiceReadIndex  = 0;
    }

    Count     = 0;
    Result    = Value / 1000U;
    Remainder = Value % 1000U;
    if (Remainder < 100U)
    {
        if (Remainder < 10U)
            goto Skip;
    }
    else
    {
        Result = Remainder / 100U;
        gVoiceID[gVoiceWriteIndex++] = (VOICE_ID_t)Result;
        Count++;
        Remainder -= Result * 100U;
    }
    Result = Remainder / 10U;
    gVoiceID[gVoiceWriteIndex++] = (VOICE_ID_t)Result;
    Count++;
    Remainder -= Result * 10U;

Skip:
    gVoiceID[gVoiceWriteIndex++] = (VOICE_ID_t)Remainder;

    return Count + 1U;
}

void AUDIO_PlayQueuedVoice(void)
{
    uint8_t VoiceID;
    uint8_t Delay;
    bool    Skip;

    Skip = false;

    if (gVoiceReadIndex != gVoiceWriteIndex && gEeprom.VOICE_PROMPT != VOICE_PROMPT_OFF)
    {
        VoiceID = gVoiceID[gVoiceReadIndex];
        if (gEeprom.VOICE_PROMPT == VOICE_PROMPT_CHINESE)
        {
            if (VoiceID < ARRAY_SIZE(VoiceClipLengthChinese))
            {
                Delay = VoiceClipLengthChinese[VoiceID];
                VoiceID += VOICE_ID_CHI_BASE;
            }
            else
                Skip = true;
        }
        else
        {
            if (VoiceID < ARRAY_SIZE(VoiceClipLengthEnglish))
            {
                Delay = VoiceClipLengthEnglish[VoiceID];
                VoiceID += VOICE_ID_ENG_BASE;
            }
            else
                Skip = true;
        }

        gVoiceReadIndex++;

        if (!Skip)
        {
            if (gVoiceReadIndex == gVoiceWriteIndex)
                Delay += 3;

            AUDIO_PlayVoice(VoiceID);

            gCountdownToPlayNextVoice_10ms = Delay;
            gFlagPlayQueuedVoice           = false;

#ifdef ENABLE_VOX
                gVoxResumeCountdown = 2000;
#endif

            return;
        }
    }

    if (FUNCTION_IsRx())
    {
        RADIO_SetModulation(gRxVfo->Modulation); // 1of11
    }

#ifdef ENABLE_FMRADIO
        if (gFmRadioMode)
            BK1080_Mute(false);
#endif

    if (!gEnableSpeaker)
        AUDIO_AudioPathOff();

#ifdef ENABLE_VOX
        gVoxResumeCountdown = 80;
#endif

    gVoiceWriteIndex    = 0;
    gVoiceReadIndex     = 0;
}

#endif