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.

/media/uploads/dkato/audioplayback_figure1_1x.png

1.2 Pin Definitions

Table 1.1 shows the pins that this sample code are to use.

/media/uploads/dkato/audioplayback_table1_1.png

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.

/media/uploads/dkato/audioplayback_figure2_1.png /media/uploads/1050186/figure2_2.png /media/uploads/dkato/audioplayback_figure2_3.png

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.

/media/uploads/dkato/audioplayback_table2_1x.png

3. Function Outline

The functions of this sample code are summarized in Table 3.1 to Table 3.3.

/media/uploads/dkato/audioplayback_table3_1.png /media/uploads/dkato/audioplayback_table3_2.png /media/uploads/dkato/audioplayback_table3_3.png /media/uploads/dkato/audioplayback_figure3_1.png

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.

/media/uploads/dkato/audioplayback_table3_4.png

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.

/media/uploads/dkato/audioplayback_table3_5.png

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

Committer:
1050186
Date:
Mon Dec 07 05:08:45 2015 +0000
Revision:
3:44c8558c3a83
Parent:
0:ee40da884cfc
Supports GCC ARM.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 0:ee40da884cfc 1 /* libFLAC - Free Lossless Audio Codec library
dkato 0:ee40da884cfc 2 * Copyright (C) 2012-2014 Xiph.org Foundation
dkato 0:ee40da884cfc 3 *
dkato 0:ee40da884cfc 4 * Redistribution and use in source and binary forms, with or without
dkato 0:ee40da884cfc 5 * modification, are permitted provided that the following conditions
dkato 0:ee40da884cfc 6 * are met:
dkato 0:ee40da884cfc 7 *
dkato 0:ee40da884cfc 8 * - Redistributions of source code must retain the above copyright
dkato 0:ee40da884cfc 9 * notice, this list of conditions and the following disclaimer.
dkato 0:ee40da884cfc 10 *
dkato 0:ee40da884cfc 11 * - Redistributions in binary form must reproduce the above copyright
dkato 0:ee40da884cfc 12 * notice, this list of conditions and the following disclaimer in the
dkato 0:ee40da884cfc 13 * documentation and/or other materials provided with the distribution.
dkato 0:ee40da884cfc 14 *
dkato 0:ee40da884cfc 15 * - Neither the name of the Xiph.org Foundation nor the names of its
dkato 0:ee40da884cfc 16 * contributors may be used to endorse or promote products derived from
dkato 0:ee40da884cfc 17 * this software without specific prior written permission.
dkato 0:ee40da884cfc 18 *
dkato 0:ee40da884cfc 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
dkato 0:ee40da884cfc 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
dkato 0:ee40da884cfc 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
dkato 0:ee40da884cfc 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
dkato 0:ee40da884cfc 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
dkato 0:ee40da884cfc 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
dkato 0:ee40da884cfc 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
dkato 0:ee40da884cfc 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
dkato 0:ee40da884cfc 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
dkato 0:ee40da884cfc 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
dkato 0:ee40da884cfc 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dkato 0:ee40da884cfc 30 */
dkato 0:ee40da884cfc 31
dkato 0:ee40da884cfc 32 /* This is the prefered location of all CPP hackery to make $random_compiler
dkato 0:ee40da884cfc 33 * work like something approaching a C99 (or maybe more accurately GNU99)
dkato 0:ee40da884cfc 34 * compiler.
dkato 0:ee40da884cfc 35 *
dkato 0:ee40da884cfc 36 * It is assumed that this header will be included after "config.h".
dkato 0:ee40da884cfc 37 */
dkato 0:ee40da884cfc 38
dkato 0:ee40da884cfc 39 #ifndef FLAC__SHARE__COMPAT_H
dkato 0:ee40da884cfc 40 #define FLAC__SHARE__COMPAT_H
dkato 0:ee40da884cfc 41
dkato 0:ee40da884cfc 42 #if defined _WIN32 && !defined __CYGWIN__
dkato 0:ee40da884cfc 43 /* where MSVC puts unlink() */
dkato 0:ee40da884cfc 44 # include <io.h>
dkato 0:ee40da884cfc 45 #else
dkato 0:ee40da884cfc 46 #if(1) /* mbed */
dkato 0:ee40da884cfc 47 #include <stdint.h> /* for SIZE_MAX */
dkato 0:ee40da884cfc 48 #include <stddef.h> /* for size_t */
1050186 3:44c8558c3a83 49 #define HAVE_LROUND /* Compiler has lround function */
dkato 0:ee40da884cfc 50 #else /* not mbed */
dkato 0:ee40da884cfc 51 # include <unistd.h>
dkato 0:ee40da884cfc 52 #endif /* end mbed */
dkato 0:ee40da884cfc 53 #endif
dkato 0:ee40da884cfc 54
dkato 0:ee40da884cfc 55 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
dkato 0:ee40da884cfc 56 #include <sys/types.h> /* for off_t */
dkato 0:ee40da884cfc 57 #define FLAC__off_t __int64 /* use this instead of off_t to fix the 2 GB limit */
dkato 0:ee40da884cfc 58 #if !defined __MINGW32__
dkato 0:ee40da884cfc 59 #define fseeko _fseeki64
dkato 0:ee40da884cfc 60 #define ftello _ftelli64
dkato 0:ee40da884cfc 61 #else /* MinGW */
dkato 0:ee40da884cfc 62 #if !defined(HAVE_FSEEKO)
dkato 0:ee40da884cfc 63 #define fseeko fseeko64
dkato 0:ee40da884cfc 64 #define ftello ftello64
dkato 0:ee40da884cfc 65 #endif
dkato 0:ee40da884cfc 66 #endif
dkato 0:ee40da884cfc 67 #else
dkato 0:ee40da884cfc 68 #define FLAC__off_t off_t
dkato 0:ee40da884cfc 69 #endif
dkato 0:ee40da884cfc 70
dkato 0:ee40da884cfc 71 #if HAVE_INTTYPES_H
dkato 0:ee40da884cfc 72 #define __STDC_FORMAT_MACROS
dkato 0:ee40da884cfc 73 #include <inttypes.h>
dkato 0:ee40da884cfc 74 #endif
dkato 0:ee40da884cfc 75
dkato 0:ee40da884cfc 76 #if defined(_MSC_VER)
dkato 0:ee40da884cfc 77 #define strtoll _strtoi64
dkato 0:ee40da884cfc 78 #define strtoull _strtoui64
dkato 0:ee40da884cfc 79 #endif
dkato 0:ee40da884cfc 80
dkato 0:ee40da884cfc 81 #if defined(_MSC_VER)
dkato 0:ee40da884cfc 82 #define inline __inline
dkato 0:ee40da884cfc 83 #endif
dkato 0:ee40da884cfc 84
dkato 0:ee40da884cfc 85 #if defined __INTEL_COMPILER || (defined _MSC_VER && defined _WIN64)
dkato 0:ee40da884cfc 86 /* MSVS generates VERY slow 32-bit code with __restrict */
dkato 0:ee40da884cfc 87 #define flac_restrict __restrict
dkato 0:ee40da884cfc 88 #elif defined __GNUC__
dkato 0:ee40da884cfc 89 #define flac_restrict __restrict__
dkato 0:ee40da884cfc 90 #else
dkato 0:ee40da884cfc 91 #define flac_restrict
dkato 0:ee40da884cfc 92 #endif
dkato 0:ee40da884cfc 93
dkato 0:ee40da884cfc 94 #define FLAC__U64L(x) x##ULL
dkato 0:ee40da884cfc 95
dkato 0:ee40da884cfc 96 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
dkato 0:ee40da884cfc 97 #define FLAC__STRCASECMP stricmp
dkato 0:ee40da884cfc 98 #define FLAC__STRNCASECMP strnicmp
dkato 0:ee40da884cfc 99 #else
dkato 0:ee40da884cfc 100 #define FLAC__STRCASECMP strcasecmp
dkato 0:ee40da884cfc 101 #define FLAC__STRNCASECMP strncasecmp
dkato 0:ee40da884cfc 102 #endif
dkato 0:ee40da884cfc 103
dkato 0:ee40da884cfc 104 #if defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__ || defined __EMX__
dkato 0:ee40da884cfc 105 #include <io.h> /* for _setmode(), chmod() */
dkato 0:ee40da884cfc 106 #include <fcntl.h> /* for _O_BINARY */
dkato 0:ee40da884cfc 107 #else
dkato 0:ee40da884cfc 108 #if(1) /* mbed */
dkato 0:ee40da884cfc 109 #else /* not mbed */
dkato 0:ee40da884cfc 110 #include <unistd.h> /* for chown(), unlink() */
dkato 0:ee40da884cfc 111 #endif /* end mbed */
dkato 0:ee40da884cfc 112 #endif
dkato 0:ee40da884cfc 113
dkato 0:ee40da884cfc 114 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
dkato 0:ee40da884cfc 115 #if defined __BORLANDC__
dkato 0:ee40da884cfc 116 #include <utime.h> /* for utime() */
dkato 0:ee40da884cfc 117 #else
dkato 0:ee40da884cfc 118 #include <sys/utime.h> /* for utime() */
dkato 0:ee40da884cfc 119 #endif
dkato 0:ee40da884cfc 120 #else
dkato 0:ee40da884cfc 121 #if(1) /* mbed */
dkato 0:ee40da884cfc 122 #else /* not mbed */
dkato 0:ee40da884cfc 123 #include <sys/types.h> /* some flavors of BSD (like OS X) require this to get time_t */
dkato 0:ee40da884cfc 124 #include <utime.h> /* for utime() */
dkato 0:ee40da884cfc 125 #endif /* end mbed */
dkato 0:ee40da884cfc 126 #endif
dkato 0:ee40da884cfc 127
dkato 0:ee40da884cfc 128 #if defined _MSC_VER
dkato 0:ee40da884cfc 129 # if _MSC_VER >= 1600
dkato 0:ee40da884cfc 130 /* Visual Studio 2010 has decent C99 support */
dkato 0:ee40da884cfc 131 # include <stdint.h>
dkato 0:ee40da884cfc 132 # define PRIu64 "llu"
dkato 0:ee40da884cfc 133 # define PRId64 "lld"
dkato 0:ee40da884cfc 134 # define PRIx64 "llx"
dkato 0:ee40da884cfc 135 # else
dkato 0:ee40da884cfc 136 # include <limits.h>
dkato 0:ee40da884cfc 137 # ifndef UINT32_MAX
dkato 0:ee40da884cfc 138 # define UINT32_MAX _UI32_MAX
dkato 0:ee40da884cfc 139 # endif
dkato 0:ee40da884cfc 140 typedef unsigned __int64 uint64_t;
dkato 0:ee40da884cfc 141 typedef unsigned __int32 uint32_t;
dkato 0:ee40da884cfc 142 typedef unsigned __int16 uint16_t;
dkato 0:ee40da884cfc 143 typedef unsigned __int8 uint8_t;
dkato 0:ee40da884cfc 144 typedef __int64 int64_t;
dkato 0:ee40da884cfc 145 typedef __int32 int32_t;
dkato 0:ee40da884cfc 146 typedef __int16 int16_t;
dkato 0:ee40da884cfc 147 typedef __int8 int8_t;
dkato 0:ee40da884cfc 148 # define PRIu64 "I64u"
dkato 0:ee40da884cfc 149 # define PRId64 "I64d"
dkato 0:ee40da884cfc 150 # define PRIx64 "I64x"
dkato 0:ee40da884cfc 151 # endif
dkato 0:ee40da884cfc 152 #endif /* defined _MSC_VER */
dkato 0:ee40da884cfc 153
dkato 0:ee40da884cfc 154 #ifdef _WIN32
dkato 0:ee40da884cfc 155 /* All char* strings are in UTF-8 format. Added to support Unicode files on Windows */
dkato 0:ee40da884cfc 156 #include "share/win_utf8_io.h"
dkato 0:ee40da884cfc 157
dkato 0:ee40da884cfc 158 #define flac_printf printf_utf8
dkato 0:ee40da884cfc 159 #define flac_fprintf fprintf_utf8
dkato 0:ee40da884cfc 160 #define flac_vfprintf vfprintf_utf8
dkato 0:ee40da884cfc 161 #define flac_fopen fopen_utf8
dkato 0:ee40da884cfc 162 #define flac_chmod chmod_utf8
dkato 0:ee40da884cfc 163 #define flac_utime utime_utf8
dkato 0:ee40da884cfc 164 #define flac_unlink unlink_utf8
dkato 0:ee40da884cfc 165 #define flac_rename rename_utf8
dkato 0:ee40da884cfc 166 #define flac_stat _stat64_utf8
dkato 0:ee40da884cfc 167
dkato 0:ee40da884cfc 168 #else
dkato 0:ee40da884cfc 169
dkato 0:ee40da884cfc 170 #define flac_printf printf
dkato 0:ee40da884cfc 171 #define flac_fprintf fprintf
dkato 0:ee40da884cfc 172 #define flac_vfprintf vfprintf
dkato 0:ee40da884cfc 173 #define flac_fopen fopen
dkato 0:ee40da884cfc 174 #define flac_chmod chmod
dkato 0:ee40da884cfc 175 #define flac_utime utime
dkato 0:ee40da884cfc 176 #define flac_unlink unlink
dkato 0:ee40da884cfc 177 #define flac_rename rename
dkato 0:ee40da884cfc 178 #define flac_stat stat
dkato 0:ee40da884cfc 179
dkato 0:ee40da884cfc 180 #endif
dkato 0:ee40da884cfc 181
dkato 0:ee40da884cfc 182 #ifdef _WIN32
dkato 0:ee40da884cfc 183 #define flac_stat_s __stat64 /* stat struct */
dkato 0:ee40da884cfc 184 #define flac_fstat _fstat64
dkato 0:ee40da884cfc 185 #else
dkato 0:ee40da884cfc 186 #define flac_stat_s stat /* stat struct */
dkato 0:ee40da884cfc 187 #define flac_fstat fstat
dkato 0:ee40da884cfc 188 #endif
dkato 0:ee40da884cfc 189
dkato 0:ee40da884cfc 190 #ifndef M_LN2
dkato 0:ee40da884cfc 191 #define M_LN2 0.69314718055994530942
dkato 0:ee40da884cfc 192 #endif
dkato 0:ee40da884cfc 193 #ifndef M_PI
dkato 0:ee40da884cfc 194 #define M_PI 3.14159265358979323846
dkato 0:ee40da884cfc 195 #endif
dkato 0:ee40da884cfc 196
dkato 0:ee40da884cfc 197 /* FLAC needs to compile and work correctly on systems with a normal ISO C99
dkato 0:ee40da884cfc 198 * snprintf as well as Microsoft Visual Studio which has an non-standards
dkato 0:ee40da884cfc 199 * conformant snprint_s function.
dkato 0:ee40da884cfc 200 *
dkato 0:ee40da884cfc 201 * This function wraps the MS version to behave more like the the ISO version.
dkato 0:ee40da884cfc 202 */
dkato 0:ee40da884cfc 203 #include <stdarg.h>
dkato 0:ee40da884cfc 204 #ifdef __cplusplus
dkato 0:ee40da884cfc 205 extern "C" {
dkato 0:ee40da884cfc 206 #endif
dkato 0:ee40da884cfc 207 int flac_snprintf(char *str, size_t size, const char *fmt, ...);
dkato 0:ee40da884cfc 208 int flac_vsnprintf(char *str, size_t size, const char *fmt, va_list va);
dkato 0:ee40da884cfc 209 #ifdef __cplusplus
dkato 0:ee40da884cfc 210 };
dkato 0:ee40da884cfc 211 #endif
dkato 0:ee40da884cfc 212
dkato 0:ee40da884cfc 213 #endif /* FLAC__SHARE__COMPAT_H */