Diff: EasyPlayback.cpp

Revision:

0:9956e2ed09da

Child:

1:fdd79b99ba73

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EasyPlayback.cpp	Mon Oct 30 07:04:30 2017 +0000
@@ -0,0 +1,152 @@
+/* mbed EasyPlayback Library
+ * Copyright (C) 2017 dkato
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "dcache-control.h"
+#include "EasyPlayback.h"
+
+EasyPlayback::EasyPlayback() : audio(0x80, (AUDIO_WRITE_BUFF_NUM - 1), 0), _buff_index(0),
+    _skip(false), _pause(false), _init_end(false)
+{
+    _heap_buf = new uint8_t[AUDIO_WRITE_BUFF_SIZE * AUDIO_WRITE_BUFF_NUM + 31];
+    _audio_buf = (uint8_t (*)[AUDIO_WRITE_BUFF_SIZE])(((uint32_t)_heap_buf + 31ul) & ~31ul);
+}
+
+EasyPlayback::~EasyPlayback()
+{
+    delete [] _heap_buf;
+}
+
+bool EasyPlayback::get_tag(const char* filename, char* p_title, char* p_artist, char* p_album, uint16_t tag_size)
+{
+    FILE * fp;
+    EasyDecoder * decoder;
+    bool ret = false;
+
+    decoder = create_decoer_class(filename);
+    if (decoder == NULL) {
+        return false;
+    }
+
+    fp = fopen(filename, "r");
+    if (decoder->AnalyzeHeder(p_title, p_artist, p_album, tag_size, fp) != false) {
+        ret = true;
+    }
+    delete decoder;
+    fclose(fp);
+
+    return ret;
+}
+
+bool EasyPlayback::play(const char* filename)
+{
+    const rbsp_data_conf_t audio_write_async_ctl = {NULL, NULL};
+    size_t audio_data_size = AUDIO_WRITE_BUFF_SIZE;
+    FILE * fp;
+    uint8_t * p_buf;
+    EasyDecoder * decoder;
+    bool ret = false;
+
+    decoder = create_decoer_class(filename);
+    if (decoder == NULL) {
+        return false;
+    }
+
+    if (!_init_end) {
+        audio.power();
+        audio.outputVolume(1.0, 1.0);
+        _init_end = true;
+    }
+
+     _skip = false;
+    fp = fopen(filename, "r");
+    if (decoder->AnalyzeHeder(NULL, NULL, NULL, 0, fp) == false) {
+        // do nothing
+    } else if  ((decoder->GetChannel() != 2)
+            || (audio.format(decoder->GetBlockSize()) == false)
+            || (audio.frequency(decoder->GetSamplingRate()) == false)) {
+        // do nothing
+    } else {
+        while (audio_data_size == AUDIO_WRITE_BUFF_SIZE) {
+            while ((_pause) && (!_skip)) {
+                Thread::wait(100);
+            }
+            if (_skip) {
+                break;
+            }
+            p_buf = _audio_buf[_buff_index];
+            audio_data_size = decoder->GetNextData(p_buf, AUDIO_WRITE_BUFF_SIZE);
+            if (audio_data_size > 0) {
+                dcache_clean(p_buf, audio_data_size);
+                audio.write(p_buf, audio_data_size, &audio_write_async_ctl);
+                _buff_index = (_buff_index + 1) & AUDIO_MSK_RING_BUFF;
+            }
+        }
+        Thread::wait(500);
+        ret = true;
+    }
+    delete decoder;
+    fclose(fp);
+
+    return ret;
+}
+
+bool EasyPlayback::is_paused(void)
+{
+    return _pause;
+}
+
+void EasyPlayback::pause()
+{
+    _pause = !_pause;
+}
+
+void EasyPlayback::pause(bool type)
+{
+    _pause = type;
+}
+
+void EasyPlayback::skip(void)
+{
+    _skip = true;
+}
+
+bool EasyPlayback::outputVolume(float VolumeOut)
+{
+    if (!_init_end) {
+        audio.power();
+        _init_end = true;
+    }
+    return audio.outputVolume(VolumeOut, VolumeOut);
+}
+
+EasyDecoder * EasyPlayback::create_decoer_class(const char* filename)
+{
+    std::map<std::string, EasyDecoder*(*)()>::iterator itr;
+    char *extension = strstr((char *)filename, ".");
+
+    if (extension == NULL) {
+        return NULL;
+    }
+
+    itr = m_lpDecoders.find(extension);
+    if (itr == m_lpDecoders.end()) {
+        return NULL;
+    }
+
+    return (*itr).second();
+}
+