amt630hv160-sdk-release/amt630hv160-freertos-beta/demo/audio_test_demo.c

#include "test_demo.h"
#include "ff_stdio.h"
#include "board.h"
#include "audio/audio.h"
#include "romfile.h"

#ifdef AUDIO_REPLAY
#if	REPLAY_TEST
#define ROMFILE_ADUIO
#define BUFSZ   4096

struct RIFF_HEADER_DEF
{
    char riff_id[4];     // 'R','I','F','F'
    uint32_t riff_size;
    char riff_format[4]; // 'W','A','V','E'
};

struct WAVE_FORMAT_DEF
{
    uint16_t FormatTag;
    uint16_t Channels;
    uint32_t SamplesPerSec;
    uint32_t AvgBytesPerSec;
    uint16_t BlockAlign;
    uint16_t BitsPerSample;
};

struct FMT_BLOCK_DEF
{
    char fmt_id[4];    // 'f','m','t',' '
    uint32_t fmt_size;
    struct WAVE_FORMAT_DEF wav_format;
};

struct DATA_BLOCK_DEF
{
    char data_id[4];     // 'R','I','F','F'
    uint32_t data_size;
};

struct wav_info
{
    struct RIFF_HEADER_DEF header;
    struct FMT_BLOCK_DEF   fmt_block;
    struct DATA_BLOCK_DEF  data_block;
};

/* Parse wav file header info */
static int wavplay_parse_header(void *file, struct wav_info *info)
{
	int max_sub_chunk = 8;

#ifdef ROMFILE_ADUIO
	if (RomFileRead((RomFile *)file, &(info->header), sizeof(struct RIFF_HEADER_DEF)) <= 0)
		goto __exit;

	/* seek to fmt sub-chunk(Drop other sub-chunk in front of fmt chunk) */
	while(1)
	{
		if (RomFileRead((RomFile *)file, &(info->fmt_block),  sizeof(struct FMT_BLOCK_DEF)) <= 0)
			goto __exit;

		if(memcmp(info->fmt_block.fmt_id, "fmt ", 4) == 0)
			break;	/* "fmt " sub-chunk fond */

		/* sub-chunk "fmt " not fond, seek to the next sub-chunk */
		RomFileSeek((RomFile *)file, info->fmt_block.fmt_size - sizeof(struct WAVE_FORMAT_DEF), SEEK_CUR);

		/* timeout */
		if(max_sub_chunk-- <= 0)
			goto __exit;
	};
	if (info->fmt_block.fmt_size > sizeof(struct WAVE_FORMAT_DEF))
		RomFileSeek((RomFile *)file, info->fmt_block.fmt_size - sizeof(struct WAVE_FORMAT_DEF), SEEK_CUR);

	max_sub_chunk = 8;
	while(1)
	{
		if (RomFileRead((RomFile *)file, &(info->data_block),  sizeof(struct DATA_BLOCK_DEF)) <= 0)
			goto __exit;

		if(memcmp(info->data_block.data_id, "data", 4) == 0)
			break;	/* "data" sub-chunk fond */

		/* sub-chunk "data" not fond, seek to the next sub-chunk */
		RomFileSeek((RomFile *)file, info->data_block.data_size, SEEK_CUR);

		/* timeout */
		if(max_sub_chunk-- <= 0)
			goto __exit;
	};
#else
	if (ff_fread(&(info->header), sizeof(struct RIFF_HEADER_DEF), 1, (FF_FILE *)file) <= 0)
		goto __exit;

	/* seek to fmt sub-chunk(Drop other sub-chunk in front of fmt chunk) */
	while(1)
	{
		if (ff_fread(&(info->fmt_block),  sizeof(struct FMT_BLOCK_DEF), 1, (FF_FILE *)file) <= 0)
			goto __exit;

		if(memcmp(info->fmt_block.fmt_id, "fmt ", 4) == 0)
			break;	// "fmt " sub-chunk fond.

		/* sub-chunk "fmt " not fond, seek to the next sub-chunk */
		ff_fseek((FF_FILE *)file, info->fmt_block.fmt_size - sizeof(struct WAVE_FORMAT_DEF), FF_SEEK_CUR);

		/* timeout */
		if(max_sub_chunk-- <= 0)
			goto __exit;
	};
	if (info->fmt_block.fmt_size > sizeof(struct WAVE_FORMAT_DEF))
		ff_fseek((FF_FILE *)file, info->fmt_block.fmt_size - sizeof(struct WAVE_FORMAT_DEF), FF_SEEK_CUR);

	max_sub_chunk = 8;
	while(1)
	{
		if (ff_fread(&(info->data_block),  sizeof(struct DATA_BLOCK_DEF), 1, (FF_FILE *)file) <= 0)
			goto __exit;

		if(memcmp(info->data_block.data_id, "data", 4) == 0)
			break;	// "data" sub-chunk fond.

		/* sub-chunk "fmt " not fond, seek to the next sub-chunk */
		ff_fseek((FF_FILE *)file, info->data_block.data_size, FF_SEEK_CUR);

		/* timeout */
		if(max_sub_chunk-- <= 0)
			goto __exit;
	};
#endif

	return 0;
__exit:
	printf("%s fail.\n", __func__);

	return -1;
}

static void wavplay_thread(void *para)
{
#ifdef ROMFILE_ADUIO
		RomFile *file = NULL;
#else
	FF_FILE *file = NULL;
#endif
    uint8_t *buffer = NULL;
    struct wav_info *info = NULL;
    struct audio_caps caps = {0};
	struct audio_device *audio;
	int data_size;

#ifdef ROMFILE_ADUIO
	file = RomFileOpen("audio/sin1K.wav");
#else
	file = ff_fopen("/sd/sin1K.wav", "rb");
#endif
	if (!file)
    {
        printf("open file failed!\n");
        goto __exit;
    }

    buffer = pvPortMalloc(BUFSZ);
	if (buffer == NULL)
		goto __exit;

    info = (struct wav_info *) pvPortMalloc(sizeof(*info));
    if (info == NULL)
        goto __exit;

	if(wavplay_parse_header((void *)file, info) < 0)
        goto __exit;

    printf("wav information:\n");
    printf("samplerate %d\n", info->fmt_block.wav_format.SamplesPerSec);
    printf("channel %d\n", info->fmt_block.wav_format.Channels);

    audio = audio_dev_open(AUDIO_REPLAY_I2S, AUDIO_FLAG_REPLAY);
	if (!audio)
	{
		printf("Open audio device fail.\n");
		goto __exit;
	}

    caps.main_type               = AUDIO_TYPE_OUTPUT;                           /* 输出类型（播放设备 ）*/
    caps.sub_type                = AUDIO_DSP_PARAM;                             /* 设置所有音频参数信息 */
    caps.udata.config.samplerate = info->fmt_block.wav_format.SamplesPerSec;    /* 采样率 */
    caps.udata.config.channels   = info->fmt_block.wav_format.Channels;         /* 采样通道 */
    caps.udata.config.samplebits = 16;                                          /* 采样位数 */
    audio_dev_configure(audio, &caps);

	data_size = info->data_block.data_size;

    while (data_size > 0)
    {
        int length;

		/* 从文件系统读取 wav 文件的音频数据 */
#ifdef ROMFILE_ADUIO
		length = RomFileRead(file, buffer, BUFSZ);
#else
		length = ff_fread(buffer, 1, BUFSZ, file);
#endif
		if(length > data_size)
			length = data_size;

        if (length <= 0)
            break;

        audio_dev_write(audio, buffer, length);
		data_size -= length;
    }

    audio_dev_close(audio, AUDIO_FLAG_REPLAY);

__exit:
    if(file)
#ifdef ROMFILE_ADUIO
		RomFileClose(file);
#else
		ff_fclose(file);
#endif
    if(buffer)
        vPortFree(buffer);

    if (info)
        vPortFree(info);

	while(1)
    	vTaskDelay(portMAX_DELAY);
}

void wavplay_demo(void)
{
	if (xTaskCreate(wavplay_thread, "wavplay", configMINIMAL_STACK_SIZE*10, NULL,
			configMAX_PRIORITIES - 3, NULL) != pdPASS) {
		printf("create wavplay task fail.\n");
	}
}
#endif
#endif

#ifdef AUDIO_RECORD
#if RECORD_TEST
#define RECORD_BUF_SIZE 1024*1024
#define RECORD_REQ_SIZE 1024
static uint8_t *wavrecord_buffer = NULL;

static uint8_t *waverecord_get_a_new_buffer(int size)
{
	static int waverecord_index = 0;
	uint8_t *buffer = NULL;

	if(!wavrecord_buffer)
	{
		wavrecord_buffer = pvPortMalloc(RECORD_BUF_SIZE);
		if(!wavrecord_buffer)
			return NULL;
		waverecord_index = 0;
	}

	if(waverecord_index + size < RECORD_BUF_SIZE)
	{
		buffer = wavrecord_buffer + waverecord_index;
		waverecord_index += size;
	}
	else
	{
		printf("record done, start_addr:0x%x, size:0x%x\n", (uint32_t)wavrecord_buffer, RECORD_BUF_SIZE);
		//CP15_clean_dcache_for_dma((uint32_t)wavrecord_buffer, (uint32_t)wavrecord_buffer + RECORD_BUF_SIZE);
		buffer = wavrecord_buffer;
		waverecord_index = 0;
	}

	return buffer;
}

static int wavrecord_callback(struct audio_device *audio)
{
	int ret = -1;

	/* save record data */
	if(audio && audio->record)
	{
		int size = audio->record->buf_info.total_size;
		if(size == RECORD_REQ_SIZE)
		{
			uint8_t *buffer = waverecord_get_a_new_buffer(size);
			if(buffer)
			{
				/* clear buffer */
				//memset(buffer, 0, size);

#if 1			/* method 1: use dynamic buffer to receive record data(without copy data). [Recommend this method] */
				audio_dev_record_set_param(audio, buffer, size);	//Set a new buffer to receive the next frame.
#else			/* method 2: use one buffer to receive record data(should copy data) */
				if(audio->record->buf_info.buffer)
					memcpy(buffer, audio->record->buf_info.buffer, size);	//Copy the record data to a destnation buffer.
#endif
				ret = 0;
			}
		}
		else
		{
			printf("%s() Invalid size:%d\n", __func__, size);
		}
	}
	return ret;
}

static void wavrecord_thread(void *para)
{
    uint8_t *buffer = NULL;
	struct audio_device *audio;
	int ret;

	audio = audio_dev_open(AUDIO_RECORD_I2S, AUDIO_FLAG_RECORD);
    if(audio)
    {
	    /* set record sample information */
		struct audio_caps caps = {0};
	    caps.main_type               = AUDIO_TYPE_INPUT;	/* 输入类型（录音设备 ）*/
	    caps.sub_type                = AUDIO_DSP_PARAM;		/* 设置所有音频参数信息 */
	    caps.udata.config.samplerate = 16000;				/* 采样率 */
	    caps.udata.config.channels   = 2;					/* 采样通道 */
	    caps.udata.config.samplebits = 16;					/* 采样位数 */
		audio_dev_configure(audio, &caps);

		/* register record complete callback */
		audio_dev_register_record_callback(audio, wavrecord_callback);

		/* set record buffer and size */
		buffer = waverecord_get_a_new_buffer(RECORD_REQ_SIZE);
		ret = audio_dev_record_set_param(audio, buffer, RECORD_REQ_SIZE);
		if(ret)
		{
			printf("%s() audio_dev_record_set_param failed \n", __func__);
			goto exit;
		}

		/* start recording */
		audio_dev_record_start(audio);

		printf("wav record information:\n");
		printf("samplerate %d\n", caps.udata.config.samplerate);
		printf("channel %d\n", caps.udata.config.channels);
		printf("samplebits %d\n", caps.udata.config.samplebits);
    }

	while(1)
		vTaskDelay(portMAX_DELAY);
exit:
	if(audio)
	{
		/* stop record */
		audio_dev_record_stop(audio);

		/* 关闭 Audio 设备 */
		audio_dev_close(audio, AUDIO_FLAG_REPLAY);
	}

    if (wavrecord_buffer)
        vPortFree(wavrecord_buffer);
}

void wavrecord_demo(void)
{
	if (xTaskCreate(wavrecord_thread, "wavrecord", configMINIMAL_STACK_SIZE, NULL,
			configMAX_PRIORITIES - 3, NULL) != pdPASS) {
		printf("create waverecord task fail.\n");
	}
}
#endif
#endif