Renesas
The "GR-PEACH_Audio_Playback_Sample" is a sample code that can provides high-resolution audio playback of FLAC format files. It also allows the user to audio-playback control functions such as play, pause, and stop by manipulating key switches.
Dependencies: R_BSP TLV320_RBSP USBHost_custom
Note
For a sample program of with LCD Board,
please refer to GR-PEACH_Audio_Playback_7InchLCD_Sample.
Introduction
The "GR-PEACH_Audio_Playback_Sample" is a sample code that can provides high-resolution audio playback of FLAC format files. It also allows the user to audio-playback control functions such as play, pause, and stop by manipulating key switches.
1. Overview of the Sample Code
1.1 Software Block Diagram
Figure 1.1 shows the software block diagram.
1.2 Pin Definitions
Table 1.1 shows the pins that this sample code are to use.
2. Sample Code Operating Environment
This sample code runs in GR-PEACH + the Audio/Camera shield for the GR-PEACH environment. This section explains the functions of the ports that are used by this sample code.
2.1 Operating Environment
Figure 2.1 shows the configuration of the operating environment for running this sample code.
2.2 List of User Operations
A list of user operations on the command line, TFT touch keys, and switch key that the user can perform for this sample code is shown in. Table 2.1.
3. Function Outline
The functions of this sample code are summarized in Table 3.1 to Table 3.3.
3.1 Playback Control
The playback control that the sample code supports include play, pause, stop, skip to next, and skip to previous.
3.2 Trick Play Control
Manipulating "Repeat" alternates between "Repeat mode On" and "Repeat mode Off". The default mode is "Repeat mode On". When the repeat mode is on, the playback of the first song starts after the playback of the last song is finished. When the repeat mode is off, the sample code enters the stopped state after the playback of the last song is finished.
3.3 Acquisition of the Song Information
The information of the song being played is obtained by operating the "Play info" during the playback of the song. Table 3.4 lists the items of information that can be obtained by the "Play info" operation.
3.4 How the Folder Structure is Analyzed
The sample coded analyzes the folder structure in the breadth-first search order. The order in which files are numbered is illustrated in Table 3.5. The sample code does not sort the files by file or folder name.
4.Others
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
display/disp_term.cpp
- Committer:
- Osamu Nakamura
- Date:
- 2017-03-31
- Revision:
- 6:df19c3e787ca
- Parent:
- 3:44c8558c3a83
File content as of revision 6:df19c3e787ca:
/*******************************************************************************
* DISCLAIMER
* This software is supplied by Renesas Electronics Corporation and is only
* intended for use with Renesas products. No other uses are authorized. This
* software is owned by Renesas Electronics Corporation and is protected under
* all applicable laws, including copyright laws.
* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
* LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
* TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
* ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
* FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
* ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* Renesas reserves the right, without notice, to make changes to this software
* and to discontinue the availability of this software. By using this software,
* you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer*
* Copyright (C) 2015 Renesas Electronics Corporation. All rights reserved.
*******************************************************************************/
#include "mbed.h"
#include "rtos.h"
#include "display.h"
#include "disp_term.h"
/*--- Macro definition ---*/
#define MOVE_CURSOR_TO_LEFT "\x1b[128D" /* Moves a cursor to the left. */
#define CLEAR_CURSOR_RIGHT "\x1b[0K" /* Clears the right side of the cursor position. */
#define CLEAR_CURSOR_LINE "\x1b[2K" /* Clears a cursor line. */
#define CLEAR_ALL "\x1b[2J" /* Clears all screen. */
#define STR_CR "\r\n"
#define MSG_PROMPT MOVE_CURSOR_TO_LEFT \
"T%ld %ld:%02ld:%02ld > "\
CLEAR_CURSOR_RIGHT
#define MSG_FILENAME_PREFIX "File Name = "
#define MSG_FILE_TYPE "File type : FLAC"
#define MSG_SAMPLING_FREQ "Sampling freq. : %ld Hz"
#define MSG_CHANNEL_PREFIX "Channel : "
#define MSG_CHANNEL_MONO "Mono"
#define MSG_CHANNEL_STEREO "Stereo"
#define MSG_REPEAT_PREFIX "Repeat Mode = "
#define MSG_MODE_ON "on"
#define MSG_MODE_OFF "off"
#define HELP_CMD_NUM (7u)
/* help information */
#define HELP_INFO_HELP "help : Show help information for commands."
#define HELP_INFO_NEXT "next : Select the next song."
#define HELP_INFO_PLAYINFO "playinfo : Show the song information."
#define HELP_INFO_PLAYPAUSE "playpause : Control playback/pause."
#define HELP_INFO_PREV "prev : Select the previous song."
#define HELP_INFO_REPEAT "repeat : Turn on and off the repeat mode."
#define HELP_INFO_STOP "stop : Stop playback."
#define MIN_TO_SEC (60u)
#define HOUR_TO_SEC (3600u)
static Serial pc_out(USBTX, USBRX);
static void output_prompt(const dsp_com_ctrl_t * const p_com);
static void output_playinfo(const dsp_com_ctrl_t * const p_com);
static void output_help_info(void);
static void clear_current_line(void);
static void output_cr(void);
static void output_string(const char_t * const p_str);
void dsp_init_term(void)
{
pc_out.baud(DSP_PC_COM_BAUDRATE);
output_string(CLEAR_ALL); /* Clears all screen. */
}
void dsp_output_term(const DSP_MAIL_ID mail_id, const dsp_com_ctrl_t * const p_com,
const dsp_trm_ctrl_t * const p_trm)
{
bool is_update;
const char_t *p_str;
if ((p_com != NULL) && (p_trm != NULL)) {
switch(mail_id) {
case DSP_MAILID_CMD_STR: /* Input character string by the command-line */
/* Input character string is displayed after Command Prompt. */
is_update = true;
break;
case DSP_MAILID_PRINT_STR: /* Character string for the status indication */
is_update = true;
clear_current_line();
output_string(&p_com->dspl_str[0]);
output_cr();
break;
case DSP_MAILID_PLAY_TIME: /* Playback time */
/* Playback time is displayed in Command Prompt. */
is_update = true;
break;
case DSP_MAILID_PLAY_INFO: /* Music information */
is_update = true;
clear_current_line();
output_playinfo(p_com);
break;
case DSP_MAILID_PLAY_MODE: /* Repeat mode */
is_update = true;
clear_current_line();
output_string(MSG_REPEAT_PREFIX);
if (p_com->repeat_mode == true) {
p_str = MSG_MODE_ON;
} else {
p_str = MSG_MODE_OFF;
}
output_string(p_str);
output_cr();
break;
case DSP_MAILID_FILE_NAME: /* File name */
is_update = true;
clear_current_line();
output_string(MSG_FILENAME_PREFIX);
output_string(&p_com->file_name[0]);
output_cr();
break;
case DSP_MAILID_HELP: /* Help information */
is_update = true;
clear_current_line();
output_help_info();
break;
case DSP_MAILID_CYCLE_IND: /* Cyclic notice */
default: /* Unexpected cases : mail id was illegal. */
is_update = false;
break;
}
if (is_update == true) {
/* Outputs the command prompt. */
output_prompt(p_com);
/* Outputs a input character string. */
output_string(&p_trm->inpt_str[0]);
if (p_trm->edge_fin_inpt == true) {
/* Because command input was finished, I move a cursor. */
/* And outputs the command prompt for next input. */
output_cr();
output_prompt(p_com);
}
}
}
}
/** Prints the command prompt
*
* @param p_com Pointer to common data in all module.
*/
static void output_prompt(const dsp_com_ctrl_t * const p_com)
{
char_t str_buf[DSP_DISP_STR_MAX_LEN];
uint32_t tim;
uint32_t hour;
uint32_t min;
uint32_t sec;
if (p_com != NULL) {
tim = p_com->play_time;
hour = tim / HOUR_TO_SEC;
tim = tim % HOUR_TO_SEC;
min = tim / MIN_TO_SEC;
sec = tim % MIN_TO_SEC;
(void) sprintf(str_buf, MSG_PROMPT, p_com->track_id, hour, min, sec);
output_string(str_buf);
}
}
/** Prints the file information of the current playback music.
*
* @param p_com Pointer to common data in all module.
*/
static void output_playinfo(const dsp_com_ctrl_t * const p_com)
{
char_t str_buf[DSP_DISP_STR_MAX_LEN];
const char_t * p_str;
if (p_com != NULL) {
/* Prints the file type */
output_string(MSG_FILE_TYPE);
output_cr();
/* Prints the sampling frequency */
(void) sprintf(str_buf, MSG_SAMPLING_FREQ, p_com->samp_freq);
output_string(str_buf);
output_cr();
/* Prints the channel structure */
output_string(MSG_CHANNEL_PREFIX);
if (p_com->channel == 1u) {
p_str = MSG_CHANNEL_MONO;
} else {
p_str = MSG_CHANNEL_STEREO;
}
output_string(p_str);
output_cr();
}
}
/** Prints the command help informations.
*
*/
static void output_help_info(void)
{
uint32_t i;
struct {
const char_t *p_help_info;
} static const info_list[HELP_CMD_NUM] = {
{ HELP_INFO_HELP },
{ HELP_INFO_NEXT },
{ HELP_INFO_PLAYINFO },
{ HELP_INFO_PLAYPAUSE },
{ HELP_INFO_PREV },
{ HELP_INFO_REPEAT },
{ HELP_INFO_STOP }
};
/* Prints the help information in alphabetical order. */
for (i = 0u; i < HELP_CMD_NUM; i++) {
output_string(info_list[i].p_help_info);
output_cr();
}
}
/** Clears a cursor line
*
*/
static void clear_current_line(void)
{
output_string(MOVE_CURSOR_TO_LEFT); /* Moves a cursor to the left. */
output_string(CLEAR_CURSOR_LINE); /* Clears a cursor line. */
}
/** Prints the CARRIAGE RETURN
*
*/
static void output_cr(void)
{
output_string(STR_CR);
}
/** Prints the specified character string
*
* @param p_str Pointer to the character string.
*/
static void output_string(const char_t * const p_str)
{
if (p_str != NULL) {
(void) pc_out.puts(p_str);
}
}