EasyPlaybackPWM.h

00001 /* mbed EasyPlaybackPWM Library
00002  * Copyright (C) 2017 dkato
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #ifndef __EASY_PLAYBACK_PWM_H__
00018 #define __EASY_PLAYBACK_PWM_H__
00019 
00020 #include <string>
00021 #include <map>
00022 #include "EasyDecoder.h"
00023 #include "PwmOutSpeaker.h"
00024 
00025 class EasyPlaybackPWM
00026 {
00027 public:
00028     EasyPlaybackPWM(PinName pwm_l, PinName pwm_r);
00029     ~EasyPlaybackPWM();
00030     bool get_tag(const char* filename, char* p_title, char* p_artist, char* p_album, uint16_t tag_size);
00031     bool play(const char* filename);
00032     bool is_paused(void);
00033     void pause(void);
00034     void pause(bool type);
00035     void skip(void);
00036     bool outputVolume(float VolumeOut);
00037 
00038     template<typename T>
00039     void add_decoder(const string& extension) {
00040         m_lpDecoders[extension] = &T::inst;
00041     }
00042 
00043 private:
00044     #define AUDIO_WRITE_BUFF_SIZE  (4096)
00045     PwmOutSpeaker audio;
00046     bool _skip;
00047     bool _pause;
00048     uint8_t *_audio_buf;
00049     std::map<std::string, EasyDecoder*(*)()> m_lpDecoders;
00050 
00051     EasyDecoder * create_decoer_class(const char* filename);
00052 };
00053 
00054 #endif