Daiki Kato / EasyPlayback

Easy playback library for AUDIO_GRBoard.

Dependents:   GR-PEACH_Audio_WAV_PwmOut GR-Boards_Audio_WAV

EasyPlayback.cpp@0:9956e2ed09da, 2017-10-30 (annotated)

Committer:
dkato
Date:
Mon Oct 30 07:04:30 2017 +0000
Revision:
0:9956e2ed09da
Child:
1:fdd79b99ba73
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 0:9956e2ed09da 1 /* mbed EasyPlayback Library
dkato 0:9956e2ed09da 2 * Copyright (C) 2017 dkato
dkato 0:9956e2ed09da 3 *
dkato 0:9956e2ed09da 4 * Licensed under the Apache License, Version 2.0 (the "License");
dkato 0:9956e2ed09da 5 * you may not use this file except in compliance with the License.
dkato 0:9956e2ed09da 6 * You may obtain a copy of the License at
dkato 0:9956e2ed09da 7 *
dkato 0:9956e2ed09da 8 * http://www.apache.org/licenses/LICENSE-2.0
dkato 0:9956e2ed09da 9 *
dkato 0:9956e2ed09da 10 * Unless required by applicable law or agreed to in writing, software
dkato 0:9956e2ed09da 11 * distributed under the License is distributed on an "AS IS" BASIS,
dkato 0:9956e2ed09da 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dkato 0:9956e2ed09da 13 * See the License for the specific language governing permissions and
dkato 0:9956e2ed09da 14 * limitations under the License.
dkato 0:9956e2ed09da 15 */
dkato 0:9956e2ed09da 16
dkato 0:9956e2ed09da 17 #include "mbed.h"
dkato 0:9956e2ed09da 18 #include "dcache-control.h"
dkato 0:9956e2ed09da 19 #include "EasyPlayback.h"
dkato 0:9956e2ed09da 20
dkato 0:9956e2ed09da 21 EasyPlayback::EasyPlayback() : audio(0x80, (AUDIO_WRITE_BUFF_NUM - 1), 0), _buff_index(0),
dkato 0:9956e2ed09da 22 _skip(false), _pause(false), _init_end(false)
dkato 0:9956e2ed09da 23 {
dkato 0:9956e2ed09da 24 _heap_buf = new uint8_t[AUDIO_WRITE_BUFF_SIZE * AUDIO_WRITE_BUFF_NUM + 31];
dkato 0:9956e2ed09da 25 _audio_buf = (uint8_t (*)[AUDIO_WRITE_BUFF_SIZE])(((uint32_t)_heap_buf + 31ul) & ~31ul);
dkato 0:9956e2ed09da 26 }
dkato 0:9956e2ed09da 27
dkato 0:9956e2ed09da 28 EasyPlayback::~EasyPlayback()
dkato 0:9956e2ed09da 29 {
dkato 0:9956e2ed09da 30 delete [] _heap_buf;
dkato 0:9956e2ed09da 31 }
dkato 0:9956e2ed09da 32
dkato 0:9956e2ed09da 33 bool EasyPlayback::get_tag(const char* filename, char* p_title, char* p_artist, char* p_album, uint16_t tag_size)
dkato 0:9956e2ed09da 34 {
dkato 0:9956e2ed09da 35 FILE * fp;
dkato 0:9956e2ed09da 36 EasyDecoder * decoder;
dkato 0:9956e2ed09da 37 bool ret = false;
dkato 0:9956e2ed09da 38
dkato 0:9956e2ed09da 39 decoder = create_decoer_class(filename);
dkato 0:9956e2ed09da 40 if (decoder == NULL) {
dkato 0:9956e2ed09da 41 return false;
dkato 0:9956e2ed09da 42 }
dkato 0:9956e2ed09da 43
dkato 0:9956e2ed09da 44 fp = fopen(filename, "r");
dkato 0:9956e2ed09da 45 if (decoder->AnalyzeHeder(p_title, p_artist, p_album, tag_size, fp) != false) {
dkato 0:9956e2ed09da 46 ret = true;
dkato 0:9956e2ed09da 47 }
dkato 0:9956e2ed09da 48 delete decoder;
dkato 0:9956e2ed09da 49 fclose(fp);
dkato 0:9956e2ed09da 50
dkato 0:9956e2ed09da 51 return ret;
dkato 0:9956e2ed09da 52 }
dkato 0:9956e2ed09da 53
dkato 0:9956e2ed09da 54 bool EasyPlayback::play(const char* filename)
dkato 0:9956e2ed09da 55 {
dkato 0:9956e2ed09da 56 const rbsp_data_conf_t audio_write_async_ctl = {NULL, NULL};
dkato 0:9956e2ed09da 57 size_t audio_data_size = AUDIO_WRITE_BUFF_SIZE;
dkato 0:9956e2ed09da 58 FILE * fp;
dkato 0:9956e2ed09da 59 uint8_t * p_buf;
dkato 0:9956e2ed09da 60 EasyDecoder * decoder;
dkato 0:9956e2ed09da 61 bool ret = false;
dkato 0:9956e2ed09da 62
dkato 0:9956e2ed09da 63 decoder = create_decoer_class(filename);
dkato 0:9956e2ed09da 64 if (decoder == NULL) {
dkato 0:9956e2ed09da 65 return false;
dkato 0:9956e2ed09da 66 }
dkato 0:9956e2ed09da 67
dkato 0:9956e2ed09da 68 if (!_init_end) {
dkato 0:9956e2ed09da 69 audio.power();
dkato 0:9956e2ed09da 70 audio.outputVolume(1.0, 1.0);
dkato 0:9956e2ed09da 71 _init_end = true;
dkato 0:9956e2ed09da 72 }
dkato 0:9956e2ed09da 73
dkato 0:9956e2ed09da 74 _skip = false;
dkato 0:9956e2ed09da 75 fp = fopen(filename, "r");
dkato 0:9956e2ed09da 76 if (decoder->AnalyzeHeder(NULL, NULL, NULL, 0, fp) == false) {
dkato 0:9956e2ed09da 77 // do nothing
dkato 0:9956e2ed09da 78 } else if ((decoder->GetChannel() != 2)
dkato 0:9956e2ed09da 79 || (audio.format(decoder->GetBlockSize()) == false)
dkato 0:9956e2ed09da 80 || (audio.frequency(decoder->GetSamplingRate()) == false)) {
dkato 0:9956e2ed09da 81 // do nothing
dkato 0:9956e2ed09da 82 } else {
dkato 0:9956e2ed09da 83 while (audio_data_size == AUDIO_WRITE_BUFF_SIZE) {
dkato 0:9956e2ed09da 84 while ((_pause) && (!_skip)) {
dkato 0:9956e2ed09da 85 Thread::wait(100);
dkato 0:9956e2ed09da 86 }
dkato 0:9956e2ed09da 87 if (_skip) {
dkato 0:9956e2ed09da 88 break;
dkato 0:9956e2ed09da 89 }
dkato 0:9956e2ed09da 90 p_buf = _audio_buf[_buff_index];
dkato 0:9956e2ed09da 91 audio_data_size = decoder->GetNextData(p_buf, AUDIO_WRITE_BUFF_SIZE);
dkato 0:9956e2ed09da 92 if (audio_data_size > 0) {
dkato 0:9956e2ed09da 93 dcache_clean(p_buf, audio_data_size);
dkato 0:9956e2ed09da 94 audio.write(p_buf, audio_data_size, &audio_write_async_ctl);
dkato 0:9956e2ed09da 95 _buff_index = (_buff_index + 1) & AUDIO_MSK_RING_BUFF;
dkato 0:9956e2ed09da 96 }
dkato 0:9956e2ed09da 97 }
dkato 0:9956e2ed09da 98 Thread::wait(500);
dkato 0:9956e2ed09da 99 ret = true;
dkato 0:9956e2ed09da 100 }
dkato 0:9956e2ed09da 101 delete decoder;
dkato 0:9956e2ed09da 102 fclose(fp);
dkato 0:9956e2ed09da 103
dkato 0:9956e2ed09da 104 return ret;
dkato 0:9956e2ed09da 105 }
dkato 0:9956e2ed09da 106
dkato 0:9956e2ed09da 107 bool EasyPlayback::is_paused(void)
dkato 0:9956e2ed09da 108 {
dkato 0:9956e2ed09da 109 return _pause;
dkato 0:9956e2ed09da 110 }
dkato 0:9956e2ed09da 111
dkato 0:9956e2ed09da 112 void EasyPlayback::pause()
dkato 0:9956e2ed09da 113 {
dkato 0:9956e2ed09da 114 _pause = !_pause;
dkato 0:9956e2ed09da 115 }
dkato 0:9956e2ed09da 116
dkato 0:9956e2ed09da 117 void EasyPlayback::pause(bool type)
dkato 0:9956e2ed09da 118 {
dkato 0:9956e2ed09da 119 _pause = type;
dkato 0:9956e2ed09da 120 }
dkato 0:9956e2ed09da 121
dkato 0:9956e2ed09da 122 void EasyPlayback::skip(void)
dkato 0:9956e2ed09da 123 {
dkato 0:9956e2ed09da 124 _skip = true;
dkato 0:9956e2ed09da 125 }
dkato 0:9956e2ed09da 126
dkato 0:9956e2ed09da 127 bool EasyPlayback::outputVolume(float VolumeOut)
dkato 0:9956e2ed09da 128 {
dkato 0:9956e2ed09da 129 if (!_init_end) {
dkato 0:9956e2ed09da 130 audio.power();
dkato 0:9956e2ed09da 131 _init_end = true;
dkato 0:9956e2ed09da 132 }
dkato 0:9956e2ed09da 133 return audio.outputVolume(VolumeOut, VolumeOut);
dkato 0:9956e2ed09da 134 }
dkato 0:9956e2ed09da 135
dkato 0:9956e2ed09da 136 EasyDecoder * EasyPlayback::create_decoer_class(const char* filename)
dkato 0:9956e2ed09da 137 {
dkato 0:9956e2ed09da 138 std::map<std::string, EasyDecoder*(*)()>::iterator itr;
dkato 0:9956e2ed09da 139 char *extension = strstr((char *)filename, ".");
dkato 0:9956e2ed09da 140
dkato 0:9956e2ed09da 141 if (extension == NULL) {
dkato 0:9956e2ed09da 142 return NULL;
dkato 0:9956e2ed09da 143 }
dkato 0:9956e2ed09da 144
dkato 0:9956e2ed09da 145 itr = m_lpDecoders.find(extension);
dkato 0:9956e2ed09da 146 if (itr == m_lpDecoders.end()) {
dkato 0:9956e2ed09da 147 return NULL;
dkato 0:9956e2ed09da 148 }
dkato 0:9956e2ed09da 149
dkato 0:9956e2ed09da 150 return (*itr).second();
dkato 0:9956e2ed09da 151 }
dkato 0:9956e2ed09da 152