初始化

cocos2d-x/cocos/audio/android/tinysndfile.h

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+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#pragma once
+
+// This is a C library for reading and writing PCM .wav files.  It is
+// influenced by other libraries such as libsndfile and audiofile, except is
+// much smaller and has an Apache 2.0 license.
+// The API should be familiar to clients of similar libraries, but there is
+// no guarantee that it will stay exactly source-code compatible with other libraries.
+
+#include <stdio.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+// visible to clients
+typedef int sf_count_t;
+
+typedef struct {
+    sf_count_t frames;
+    int samplerate;
+    int channels;
+    int format;
+} SF_INFO;
+
+// opaque to clients
+typedef struct SNDFILE_ SNDFILE;
+
+// Format
+#define SF_FORMAT_TYPEMASK  1
+#define SF_FORMAT_WAV       1
+#define SF_FORMAT_SUBMASK   14
+#define SF_FORMAT_PCM_16    2
+#define SF_FORMAT_PCM_U8    4
+#define SF_FORMAT_FLOAT     6
+#define SF_FORMAT_PCM_32    8
+#define SF_FORMAT_PCM_24    10
+
+typedef struct {
+    void* (*open)(const char* path, void* user);
+    size_t (*read)  (void* ptr, size_t size, size_t nmemb, void* datasource);
+    int    (*seek)  (void* datasource, long offset, int whence);
+    int    (*close) (void* datasource);
+    long   (*tell)  (void* datasource);
+} snd_callbacks;
+
+// Open stream
+SNDFILE *sf_open_read(const char *path, SF_INFO *info, snd_callbacks* cb, void* user);
+
+// Close stream
+void sf_close(SNDFILE *handle);
+
+// Read interleaved frames and return actual number of frames read
+sf_count_t sf_readf_short(SNDFILE *handle, short *ptr, sf_count_t desired);
+/*
+sf_count_t sf_readf_float(SNDFILE *handle, float *ptr, sf_count_t desired);
+sf_count_t sf_readf_int(SNDFILE *handle, int *ptr, sf_count_t desired);
+*/
+
+__END_DECLS