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/display.h
- Committer:
- Osamu Nakamura
- Date:
- 2017-03-31
- Revision:
- 6:df19c3e787ca
- Parent:
- 2:d9fca8cd7f03
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.
*******************************************************************************/
#ifndef DISPLAY_H
#define DISPLAY_H
#include "r_typedefs.h"
#include "system.h"
/*--- Macro definition ---*/
#define DSP_STACK_SIZE (2048u) /* Stack size of display thread */
/* The maximum length of display character string. */
#define DSP_DISP_STR_MAX_LEN (64)
/* The maximum length of input character string by the command-line. */
#define DSP_CMD_INPT_STR_MAX_LEN (63)
/* The baud rate of the serial port for PC communication. */
#define DSP_PC_COM_BAUDRATE (9600)
/*--- User defined types ---*/
typedef enum {
DSP_MAILID_DUMMY = 0,
DSP_MAILID_CYCLE_IND, /* Cyclic notice */
DSP_MAILID_CMD_STR, /* Notifies display thread of input string. */
DSP_MAILID_PRINT_STR, /* Notifies display thread of output string. */
DSP_MAILID_PLAY_TIME, /* Notifies display thread of playback time. */
DSP_MAILID_PLAY_INFO, /* Notifies display thread of playback information. */
DSP_MAILID_PLAY_MODE, /* Notifies display thread of repeat mode. */
DSP_MAILID_FILE_NAME, /* Notifies display thread of file name. */
DSP_MAILID_HELP, /* Requests display thread to display help message. */
DSP_MAILID_NUM
} DSP_MAIL_ID;
/* These data are used in all display modules. */
typedef struct {
uint32_t disp_mode; /* Display mode */
SYS_PlayStat play_stat; /* Playback status */
uint32_t track_id; /* Track number */
uint32_t play_time; /* Playback time (sec) */
uint32_t total_time; /* Total playback time (sec) */
uint32_t samp_freq; /* Sampling frequency (Hz) */
uint32_t channel; /* Channel number */
bool repeat_mode; /* Repeat mode */
char_t file_name[DSP_DISP_STR_MAX_LEN];/* Character string of file name */
char_t dspl_str[DSP_DISP_STR_MAX_LEN]; /* Display character string */
} dsp_com_ctrl_t;
/* These data are used only in the terminal-output module. */
typedef struct {
bool edge_fin_inpt; /* Completion status of the input by the command-line.*/
/* [true = input completion, false = input now] */
char_t inpt_str[DSP_CMD_INPT_STR_MAX_LEN];/* Input character string by the command-line. */
} dsp_trm_ctrl_t;
/* These data are used only in the TFT module. */
typedef struct {
int32_t disp_phase_no; /* The making phase of the display image */
} dsp_tft_ctrl_t;
/** Display Thread
*
* @param argument Pointer to the thread function as start argument.
*/
void dsp_thread(void const *argument);
/** Notifies the display thread of the song information (file number, play time, total play time, play state).
*
* @param play_stat Playback state
* Stopped : SYS_PLAYSTAT_STOP
* Playing : SYS_PLAYSTAT_PLAY
* Paused : SYS_PLAYSTAT_PAUSE
* @param file_no File number
* 1 to 999
* @param play_time Playback time (in seconds)
* 0 to 359999
* * 0 hour, 0 minute, 0 second to 99 hours, 59 minutes, 59 seconds
* @param total_time Total play time (in seconds)
* 0 to 359999
* * 0 hour, 0 minute, 0 second to 99 hours, 59 minutes, 59 seconds
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_play_time(const SYS_PlayStat play_stat, const uint32_t file_no,
const uint32_t play_time, const uint32_t total_time);
/** Notifies the display thread of the song information (file number, sampling frequency, and number of channels).
*
* @param file_no File number
* 1 to 999
* @param sample_freq Sampling frequency (Hz)
* 22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000
* @param channel_num Number of channels
* 1, 2
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_play_info(const uint32_t file_no,
const uint32_t sample_freq, const uint32_t channel_num);
/** Notifies the display thread of the playback mode (repeat mode).
*
* @param rep_mode Repeat mode
* Repeat mode OFF : false
* Repeat mode ON : true
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_play_mode(const bool rep_mode);
/** Notifies the display thread of the file name.
*
* @param p_str File name string
* * The string must be terminated by '\0'.
* The character code must be the local character code. Since the end of
* a string is identified by the presence of '\0', a file name of
* multi-byte code may not be displayed correctly.
* The maximum length of the string that the display thread can notify
* is 64 bytes including '\0'.
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* The argument p_str is set to NULL.
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_file_name(const char_t * const p_str);
/** Notifies the display thread of the string to be output on the terminal.
*
* @param p_str String to be output on the terminal
* * The string must be terminated by '\0'.
* The character code must be the local character code. Since the end of
* a string is identified by the presence of '\0', a file name of
* multi-byte code may not be displayed correctly.
* The maximum length of the string that the display thread can notify
* is 64 bytes including '\0'.
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* The argument p_str is set to NULL.
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_print_string(const char_t * const p_str);
/** Notifies the display thread of the command line input string.
* * Used to echo back the string entered from the command line.
*
* @param p_str Command line input string
* * The string must contain no control characters and terminate with '\0'.
* The character code must be the local character code. Since the end of
* a string is identified by the presence of '\0', a file name of
* multi-byte code may not be displayed correctly.
* The maximum length of the string that the display thread can notify
* is 63 bytes including '\0'.
*
* @param flag_fin Input completion flag
* Middle of input : false
* Input complete : true
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* The argument p_str is set to NULL.
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_notify_input_string(const char_t * const p_str, const bool flag_fin);
/** Requests the display thread to display help message.
*
* @returns
* Returns true if the API is successful. Returns false if the API fails.
* This function fails when:
* Failed to secure memory for mailbox communication.
* Failed to perform transmit processing for mailbox communication.
*/
bool dsp_req_help(void);
#endif /* DISPLAY_H */