Added wav file structures

Author: marcel-licence

src/ml_wavfile.h

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2024 Marcel Licence
+ */
+
+/**
+ * @file ml_wavfile.h
+ * @author Marcel Licence
+ * @data 27.06.2023
+ *
+ * @brief   Wave file structures etc.
+ */
+
+
+#ifndef ML_WAVFILE_H_
+#define ML_WAVFILE_H_
+
+
+union wav_tag__header_u
+{
+    struct
+    {
+        char tag_name[4];
+        uint32_t tag_data_size;
+    };
+    uint8_t wavHdr[8];
+};
+
+union wavHeader
+{
+    struct
+    {
+        char riff[4]; /*!< 'RIFF' */
+        uint32_t fileSize; /*!< bytes to write containing all data (header + data) */
+        char waveType[4]; /*!< 'WAVE' */
+
+        char format[4]; /*!< 'fmt ' */
+        uint32_t lengthOfData; /*!< length of the fmt header (16 bytes) */
+        uint16_t format_tag; /*!< 0x0001: PCM */
+        uint16_t numberOfChannels; /*!< 'WAVE' */
+        uint32_t sampleRate;
+        uint32_t byteRate;
+
+        uint16_t bytesPerSample;
+        uint16_t bitsPerSample;
+        wav_tag__header_u nextTag;
+    };
+    uint8_t wavHdr[44];
+};
+
+union wav_tag__smpl_u
+{
+    struct
+    {
+        uint32_t manufacturer; /* 0x08 */
+        uint32_t product; /* 0x0C */
+        uint32_t sample_period; /* 0x10 */
+        uint32_t MIDI_unity_note; /* 0x14 */
+        uint32_t MIDI_pitch_fraction; /* 0x18 */
+        uint32_t SMPTE_format;
+        uint32_t SMPTE_offset;
+        uint32_t number_of_sample_loops;
+        uint32_t sample_data;
+        struct
+        {
+            uint32_t ID;
+            uint32_t type;
+            uint32_t start;
+            uint32_t end;
+            uint32_t fraction;
+            uint32_t number_of_times_to_play_the_loop;
+        };
+    };
+    uint8_t raw[4 * 15];
+};
+
+
+#endif /* ML_WAVFILE_H_ */