Diff: sample_programs/sample_05_spdif_wav_playback.cpp

Revision:

0:b4c1e32627f2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sample_programs/sample_05_spdif_wav_playback.cpp	Mon Oct 12 02:25:49 2020 +0000
@@ -0,0 +1,95 @@
+/*******************************************************************************
+* 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) 2019 Renesas Electronics Corporation. All rights reserved.
+*******************************************************************************/
+#include "sample_select.h"
+
+#if (SAMPLE_PROGRAM_NO == 5)
+// SAMPLE_PROGRAM_NO  5 : SPDIF wav playback sample (use USB memory or SD card)
+//
+// This sample will play a ".wav" file of the SD root folder.
+// Wav file format : RIFF format, 1ch or 2ch, 44.1kHz, 16bits
+// In case of SAMPLE_PROGRAM_NO=5 :
+//   Since TARGET_RZ_A2M_EVB has no connector and no suitable AUDIO_CLK has been entered, only pseudo-evaluation is executed.
+//   - Audio data is output from the PC_5 terminal.
+//   - Since AUDIO_CLK on the board is 11.2896 MHz, it operates at half the actual speed.
+//   - The AUDIO_CLK frequency required is 512 times as large as the sample frequency for audio data.
+//     (fs=44.1kHz : AUDIO_CLK=22.5792MHz, fs=48kHz : AUDIO_CLK=24.5760MHz)
+
+#if !defined(TARGET_RZ_A2M_EVB)
+#error "SPDIF is not supported."
+#endif
+
+#include "mbed.h"
+#include "FATFileSystem.h"
+#include "SdUsbConnect.h"
+#include "EasyPlayback.h"
+#include "EasyDec_WavCnv2ch.h"
+
+static EasyPlayback AudioPlayer(EasyPlayback::AUDIO_TPYE_SPDIF);
+
+#define FILE_NAME_LEN          (64)
+#define MOUNT_NAME             "storage"
+
+static InterruptIn skip_btn(USER_BUTTON0);
+
+static void skip_btn_fall(void) {
+    AudioPlayer.skip();
+}
+
+int main() {
+    DIR  * d;
+    struct dirent * p;
+    char file_path[sizeof("/" MOUNT_NAME "/") + FILE_NAME_LEN];
+    SdUsbConnect storage(MOUNT_NAME);
+
+    // decoder setting
+    AudioPlayer.add_decoder<EasyDec_WavCnv2ch>(".wav");
+    AudioPlayer.add_decoder<EasyDec_WavCnv2ch>(".WAV");
+
+    // button setting
+    skip_btn.fall(&skip_btn_fall);
+
+    while (1) {
+        // connect wait
+        storage.wait_connect();
+
+        // file search
+        d = opendir("/" MOUNT_NAME "/");
+        if (d != NULL) {
+            while ((p = readdir(d)) != NULL) {
+                size_t len = strlen(p->d_name);
+                if (len < FILE_NAME_LEN) {
+                    // make file path
+                    sprintf(file_path, "/%s/%s", MOUNT_NAME, p->d_name);
+                    printf("%s\r\n", file_path);
+
+                    // playback
+                    AudioPlayer.play(file_path);
+                }
+            }
+            closedir(d);
+        }
+    }
+}
+
+#endif