GR-PEACH_Audio_WAV - This sample will play a ".wav" file of the USB ro…

Renesas » Code » GR-PEACH_Audio_WAV

This sample will play a ".wav" file of the USB root folder. Only RIFF format.

Fork of GR-PEACH_Audio_WAV by Daiki Kato

Audio sample for GR-PEACH or GR-LYCHEE. This sample will play a ".wav" file in the root of USB memory or SD card. If the USER_BUTTON0 is pressed, the next song is played.

The default setting of serial communication (baud rate etc.) in mbed is shown the following link.
Please refer to the link and change the settings of your PC terminal software.
The default value of baud rate in mbed is 9600, and this application uses baud rate 9600.
https://developer.mbed.org/teams/Renesas/wiki/GR-PEACH-Getting-Started#install-the-usb-serial-communication

Please refer to following link about Audio/Camera Shield.
https://developer.mbed.org/teams/Renesas/wiki/Audio_Camera-shield

For GR-PEACH:

Format	Wav file (RIFF format) ".wav"
Channel	2ch
Frequencies	32kHz, 44.1kHz, 48kHz, 88.2kHz and 96kHz
Quantization bit rate	16bits, 24bits and 32bits

For GR-LYCHEE:

Format	Wav file (RIFF format) ".wav"
Channel	2ch
Frequencies	32kHz, 44.1kHz and 48kHz
Quantization bit rate	16bits

Use USB0 of PEACH:

If you use the USB0 as USB Host, please close GR-PEACH's JP3.

Please select USB0 connector by the following configuration.

mbed_app.json

{
    "config": {
        "usb-host-ch":{
            "help": "(for GR-PEACH) 0:ch0 1:ch1",
            "value": "0"
        },
        "audio-camera-shield":{
            "help": "(for GR-PEACH) 0:not use 1:use",
            "value": "0"
        }
    }
}

Use USB1 of GR-PEACH:

If you use the USB1 as USB Host, please close Audio/Camera Shield's JP1.

Please select Audio/Camera Shield and USB1 connector by the following configuration.

mbed_app.json

{
    "config": {
        "usb-host-ch":{
            "help": "(for GR-PEACH) 0:ch0 1:ch1",
            "value": "1"
        },
        "audio-camera-shield":{
            "help": "(for GR-PEACH) 0:not use 1:use",
            "value": "1"
        }
    }
}

dec_wav.h@9:a1045daef81d, 2017-03-22 (annotated)

Committer:: Osamu Nakamura
Date:: Wed Mar 22 14:37:49 2017 +0900
Revision:: 9:a1045daef81d
Parent:: 7:4b6799c255ea

Introduced mbed OS 5 instead of mbed OS 2(Classic)

Who changed what in which revision?

User	Revision	Line number	New contents of line
dkato	4:01651a6c3f9a	1	/************************************************************************//
dkato	4:01651a6c3f9a	2	* @file dec_wav.h
dkato	4:01651a6c3f9a	3	* @brief wav
dkato	4:01651a6c3f9a	4	******************************************************************************/
dkato	4:01651a6c3f9a	5	#include "mbed.h"
dkato	4:01651a6c3f9a	6
dkato	4:01651a6c3f9a	7	/** A class to communicate a dec_wav
dkato	4:01651a6c3f9a	8	*
dkato	4:01651a6c3f9a	9	*/
dkato	4:01651a6c3f9a	10	class dec_wav {
dkato	4:01651a6c3f9a	11	public:
dkato	4:01651a6c3f9a	12
dkato	4:01651a6c3f9a	13	/** analyze header
dkato	4:01651a6c3f9a	14	*
dkato	4:01651a6c3f9a	15	* @param p_title title tag buffer
dkato	4:01651a6c3f9a	16	* @param p_artist artist tag buffer
dkato	4:01651a6c3f9a	17	* @param p_album album tag buffer
dkato	4:01651a6c3f9a	18	* @param tag_size tag buffer size
dkato	4:01651a6c3f9a	19	* @param fp file pointer
dkato	4:01651a6c3f9a	20	* @return true = success, false = failure
dkato	4:01651a6c3f9a	21	*/
dkato	5:983467c1466b	22	bool AnalyzeHeder(uint8_t * p_title, uint8_t * p_artist, uint8_t * p_album, uint16_t tag_size, FILE * fp) {
dkato	4:01651a6c3f9a	23	bool result = false;
dkato	4:01651a6c3f9a	24	size_t read_size;
dkato	4:01651a6c3f9a	25	uint8_t wk_read_buff[36];
dkato	4:01651a6c3f9a	26	uint8_t *data;
dkato	4:01651a6c3f9a	27	uint32_t chunk_size;
dkato	4:01651a6c3f9a	28	uint32_t sub_chunk_size;
dkato	4:01651a6c3f9a	29	uint32_t list_index_max;
dkato	4:01651a6c3f9a	30	bool list_ok = false;
dkato	4:01651a6c3f9a	31	uint32_t read_index = 0;
dkato	4:01651a6c3f9a	32	uint32_t data_index = 0;
dkato	4:01651a6c3f9a	33	uint16_t wk_len;
dkato	4:01651a6c3f9a	34
dkato	4:01651a6c3f9a	35	if (fp == NULL) {
dkato	4:01651a6c3f9a	36	return false;
dkato	4:01651a6c3f9a	37	}
dkato	4:01651a6c3f9a	38	music_data_size = 0;
dkato	4:01651a6c3f9a	39	music_data_index = 0;
dkato	4:01651a6c3f9a	40	wav_fp = fp;
dkato	4:01651a6c3f9a	41	if (p_title != NULL) {
dkato	4:01651a6c3f9a	42	p_title[0] = '\0';
dkato	4:01651a6c3f9a	43	}
dkato	4:01651a6c3f9a	44	if (p_artist != NULL) {
dkato	4:01651a6c3f9a	45	p_artist[0] = '\0';
dkato	4:01651a6c3f9a	46	}
dkato	4:01651a6c3f9a	47	if (p_album != NULL) {
dkato	4:01651a6c3f9a	48	p_album[0] = '\0';
dkato	4:01651a6c3f9a	49	}
dkato	4:01651a6c3f9a	50
dkato	4:01651a6c3f9a	51	read_size = fread(&wk_read_buff[0], sizeof(char), 36, wav_fp);
dkato	4:01651a6c3f9a	52	if (read_size < 36) {
dkato	4:01651a6c3f9a	53	// do nothing
dkato	4:01651a6c3f9a	54	} else if (memcmp(&wk_read_buff[0], "RIFF", 4) != 0) {
dkato	4:01651a6c3f9a	55	// do nothing
dkato	4:01651a6c3f9a	56	} else if (memcmp(&wk_read_buff[8], "WAVE", 4) != 0) {
dkato	4:01651a6c3f9a	57	// do nothing
dkato	4:01651a6c3f9a	58	} else if (memcmp(&wk_read_buff[12], "fmt ", 4) != 0) {
dkato	4:01651a6c3f9a	59	// do nothing
dkato	4:01651a6c3f9a	60	} else {
dkato	4:01651a6c3f9a	61	read_index += 36;
dkato	5:983467c1466b	62	channel = ((uint32_t)wk_read_buff[22] << 0) + ((uint32_t)wk_read_buff[23] << 8);
dkato	4:01651a6c3f9a	63	sampling_rate = ((uint32_t)wk_read_buff[24] << 0)
dkato	4:01651a6c3f9a	64	+ ((uint32_t)wk_read_buff[25] << 8)
dkato	4:01651a6c3f9a	65	+ ((uint32_t)wk_read_buff[26] << 16)
dkato	4:01651a6c3f9a	66	+ ((uint32_t)wk_read_buff[27] << 24);
dkato	4:01651a6c3f9a	67	block_size = ((uint32_t)wk_read_buff[34] << 0) + ((uint32_t)wk_read_buff[35] << 8);
dkato	4:01651a6c3f9a	68	while (1) {
dkato	4:01651a6c3f9a	69	read_size = fread(&wk_read_buff[0], sizeof(char), 8, wav_fp);
dkato	4:01651a6c3f9a	70	read_index += 8;
dkato	4:01651a6c3f9a	71	if (read_size < 8) {
dkato	4:01651a6c3f9a	72	break;
dkato	4:01651a6c3f9a	73	} else {
dkato	4:01651a6c3f9a	74	chunk_size = ((uint32_t)wk_read_buff[4] << 0)
dkato	4:01651a6c3f9a	75	+ ((uint32_t)wk_read_buff[5] << 8)
dkato	4:01651a6c3f9a	76	+ ((uint32_t)wk_read_buff[6] << 16)
dkato	4:01651a6c3f9a	77	+ ((uint32_t)wk_read_buff[7] << 24);
dkato	4:01651a6c3f9a	78	if (memcmp(&wk_read_buff[0], "data", 4) == 0) {
dkato	4:01651a6c3f9a	79	result = true;
dkato	4:01651a6c3f9a	80	music_data_size = chunk_size;
dkato	4:01651a6c3f9a	81	if (list_ok == true) {
dkato	4:01651a6c3f9a	82	break;
dkato	4:01651a6c3f9a	83	} else {
dkato	4:01651a6c3f9a	84	data_index = read_index;
dkato	4:01651a6c3f9a	85	fseek(wav_fp, chunk_size, SEEK_CUR);
dkato	4:01651a6c3f9a	86	read_index += chunk_size;
dkato	4:01651a6c3f9a	87	}
dkato	4:01651a6c3f9a	88	} else if (memcmp(&wk_read_buff[0], "LIST", 4) == 0) {
dkato	4:01651a6c3f9a	89	list_ok = true;
dkato	4:01651a6c3f9a	90	list_index_max = read_index + chunk_size;
dkato	4:01651a6c3f9a	91	read_size = fread(&wk_read_buff[0], sizeof(char), 4, wav_fp);
dkato	4:01651a6c3f9a	92	read_index += 4;
dkato	4:01651a6c3f9a	93	while (read_index < list_index_max) {
dkato	4:01651a6c3f9a	94	read_size = fread(&wk_read_buff[0], sizeof(char), 8, wav_fp);
dkato	4:01651a6c3f9a	95	read_index += 8;
dkato	4:01651a6c3f9a	96	if (read_size < 8) {
dkato	4:01651a6c3f9a	97	break;
dkato	4:01651a6c3f9a	98	} else if (memcmp(&wk_read_buff[0], "INAM", 4) == 0) {
dkato	4:01651a6c3f9a	99	data = p_title;
dkato	4:01651a6c3f9a	100	} else if (memcmp(&wk_read_buff[0], "IART", 4) == 0) {
dkato	4:01651a6c3f9a	101	data = p_artist;
dkato	4:01651a6c3f9a	102	} else if (memcmp(&wk_read_buff[0], "IPRD", 4) == 0) {
dkato	4:01651a6c3f9a	103	data = p_album;
dkato	4:01651a6c3f9a	104	} else {
dkato	4:01651a6c3f9a	105	data = NULL;
dkato	4:01651a6c3f9a	106	}
dkato	4:01651a6c3f9a	107	if ((data != NULL) && (tag_size != 0)) {
dkato	4:01651a6c3f9a	108	sub_chunk_size = ((uint32_t)wk_read_buff[4] << 0)
dkato	4:01651a6c3f9a	109	+ ((uint32_t)wk_read_buff[5] << 8)
dkato	4:01651a6c3f9a	110	+ ((uint32_t)wk_read_buff[6] << 16)
dkato	4:01651a6c3f9a	111	+ ((uint32_t)wk_read_buff[7] << 24);
dkato	4:01651a6c3f9a	112	if (sub_chunk_size > (tag_size - 1)) {
dkato	4:01651a6c3f9a	113	wk_len = (tag_size - 1);
dkato	4:01651a6c3f9a	114	} else {
dkato	4:01651a6c3f9a	115	wk_len = sub_chunk_size;
dkato	4:01651a6c3f9a	116	}
dkato	4:01651a6c3f9a	117	read_size = fread(data, sizeof(char), wk_len, wav_fp);
dkato	4:01651a6c3f9a	118	read_index += sub_chunk_size;
dkato	4:01651a6c3f9a	119	fseek(wav_fp, read_index, SEEK_SET);
dkato	4:01651a6c3f9a	120	data[wk_len] = '\0';
dkato	4:01651a6c3f9a	121	}
dkato	4:01651a6c3f9a	122	}
dkato	4:01651a6c3f9a	123	if (data_index != 0) {
dkato	4:01651a6c3f9a	124	break;
dkato	4:01651a6c3f9a	125	} else {
dkato	4:01651a6c3f9a	126	fseek(wav_fp, list_index_max, SEEK_SET);
dkato	4:01651a6c3f9a	127	}
dkato	4:01651a6c3f9a	128	} else {
dkato	4:01651a6c3f9a	129	fseek(wav_fp, chunk_size, SEEK_CUR);
dkato	4:01651a6c3f9a	130	read_index += chunk_size;
dkato	4:01651a6c3f9a	131	}
dkato	4:01651a6c3f9a	132	}
dkato	4:01651a6c3f9a	133	}
dkato	4:01651a6c3f9a	134
dkato	4:01651a6c3f9a	135	if (data_index != 0) {
dkato	4:01651a6c3f9a	136	fseek(wav_fp, data_index, SEEK_SET);
dkato	4:01651a6c3f9a	137	}
dkato	4:01651a6c3f9a	138	}
dkato	4:01651a6c3f9a	139
dkato	4:01651a6c3f9a	140	return result;
dkato	4:01651a6c3f9a	141	};
dkato	4:01651a6c3f9a	142
dkato	4:01651a6c3f9a	143	/** get next data
dkato	4:01651a6c3f9a	144	*
dkato	4:01651a6c3f9a	145	* @param buf data buffer address
dkato	4:01651a6c3f9a	146	* @param len data buffer length
dkato	4:01651a6c3f9a	147	* @return get data size
dkato	4:01651a6c3f9a	148	*/
dkato	5:983467c1466b	149	size_t GetNextData(void *buf, size_t len) {
dkato	7:4b6799c255ea	150	if (block_size == 24) {
dkato	7:4b6799c255ea	151	// Add padding
dkato	7:4b6799c255ea	152	int write_index = 0;
dkato	7:4b6799c255ea	153	int wavfile_index;
dkato	7:4b6799c255ea	154	int read_len;
dkato	7:4b6799c255ea	155	int pading_index = 0;
dkato	7:4b6799c255ea	156	uint8_t * p_buf = (uint8_t *)buf;
dkato	7:4b6799c255ea	157	size_t ret;
dkato	7:4b6799c255ea	158
dkato	7:4b6799c255ea	159	if ((music_data_index + len) > music_data_size) {
dkato	7:4b6799c255ea	160	len = music_data_size - music_data_index;
dkato	7:4b6799c255ea	161	}
dkato	7:4b6799c255ea	162	while (write_index < len) {
dkato	7:4b6799c255ea	163	read_len = (len - write_index) * 3 / 4;
dkato	7:4b6799c255ea	164	if (read_len > sizeof(wk_wavfile_buff)) {
dkato	7:4b6799c255ea	165	read_len = sizeof(wk_wavfile_buff);
dkato	7:4b6799c255ea	166	}
dkato	7:4b6799c255ea	167	music_data_index += read_len;
dkato	7:4b6799c255ea	168	ret = fread(wk_wavfile_buff, sizeof(char), read_len, wav_fp);
dkato	7:4b6799c255ea	169	if (ret < read_len) {
dkato	7:4b6799c255ea	170	break;
dkato	7:4b6799c255ea	171	}
dkato	7:4b6799c255ea	172	wavfile_index = 0;
dkato	7:4b6799c255ea	173	while ((write_index < len) && (wavfile_index < read_len)) {
dkato	7:4b6799c255ea	174	if (pading_index == 0) {
dkato	7:4b6799c255ea	175	p_buf[write_index] = 0;
dkato	7:4b6799c255ea	176	} else {
dkato	7:4b6799c255ea	177	p_buf[write_index] = wk_wavfile_buff[wavfile_index];
dkato	7:4b6799c255ea	178	wavfile_index++;
dkato	7:4b6799c255ea	179	}
dkato	7:4b6799c255ea	180	if (pading_index < 3) {
dkato	7:4b6799c255ea	181	pading_index++;
dkato	7:4b6799c255ea	182	} else {
dkato	7:4b6799c255ea	183	pading_index = 0;
dkato	7:4b6799c255ea	184	}
dkato	7:4b6799c255ea	185	write_index++;
dkato	7:4b6799c255ea	186	}
dkato	7:4b6799c255ea	187	}
dkato	7:4b6799c255ea	188
dkato	7:4b6799c255ea	189	return write_index;
dkato	7:4b6799c255ea	190	} else {
dkato	7:4b6799c255ea	191	if ((music_data_index + len) > music_data_size) {
dkato	7:4b6799c255ea	192	len = music_data_size - music_data_index;
dkato	7:4b6799c255ea	193	}
dkato	7:4b6799c255ea	194	music_data_index += len;
dkato	7:4b6799c255ea	195
dkato	7:4b6799c255ea	196	return fread(buf, sizeof(char), len, wav_fp);
dkato	4:01651a6c3f9a	197	}
dkato	4:01651a6c3f9a	198	};
dkato	4:01651a6c3f9a	199
dkato	5:983467c1466b	200	/** get channel
dkato	5:983467c1466b	201	*
dkato	5:983467c1466b	202	* @return channel
dkato	5:983467c1466b	203	*/
dkato	5:983467c1466b	204	uint16_t GetChannel() {
dkato	5:983467c1466b	205	return channel;
dkato	5:983467c1466b	206	};
dkato	5:983467c1466b	207
dkato	5:983467c1466b	208	/** get block size
dkato	5:983467c1466b	209	*
dkato	5:983467c1466b	210	* @return block size
dkato	5:983467c1466b	211	*/
dkato	5:983467c1466b	212	uint16_t GetBlockSize() {
dkato	5:983467c1466b	213	return block_size;
dkato	5:983467c1466b	214	};
dkato	5:983467c1466b	215
dkato	5:983467c1466b	216	/** get sampling rate
dkato	5:983467c1466b	217	*
dkato	5:983467c1466b	218	* @return sampling rate
dkato	5:983467c1466b	219	*/
dkato	7:4b6799c255ea	220	uint32_t GetSamplingRate() {
dkato	5:983467c1466b	221	return sampling_rate;
dkato	5:983467c1466b	222	};
dkato	5:983467c1466b	223
dkato	4:01651a6c3f9a	224	private:
dkato	7:4b6799c255ea	225	#define FILE_READ_BUFF_SIZE (3072)
dkato	7:4b6799c255ea	226
dkato	4:01651a6c3f9a	227	FILE * wav_fp;
dkato	4:01651a6c3f9a	228	uint32_t music_data_size;
dkato	4:01651a6c3f9a	229	uint32_t music_data_index;
dkato	5:983467c1466b	230	uint16_t channel;
dkato	5:983467c1466b	231	uint16_t block_size;
dkato	5:983467c1466b	232	uint32_t sampling_rate;
dkato	7:4b6799c255ea	233	uint8_t wk_wavfile_buff[FILE_READ_BUFF_SIZE];
dkato	4:01651a6c3f9a	234	};

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Type:	Program
Mbed OS support:	Mbed OS
Created:	02 Jun 2015
Imports:	166
Forks:	1
Commits:	11
Dependents:	0
Dependencies:	0
Followers:	59

mbed_app.json

mbed_app.json

dec_wav.h@9:a1045daef81d, 2017-03-22 (annotated)

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