81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file wavAudioCursor.h
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* @author rdb
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* @date 2013-08-23
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*/
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#ifndef WAVAUDIOCURSOR_H
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#define WAVAUDIOCURSOR_H
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#include "pandabase.h"
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#include "movieAudioCursor.h"
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#include "streamReader.h"
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class WavAudio;
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/**
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* Used for reading PCM .wav files. Supported formats are linear PCM, IEEE
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* float, A-law and mu-law.
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*/
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class EXPCL_PANDA_MOVIES WavAudioCursor : public MovieAudioCursor {
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PUBLISHED:
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explicit WavAudioCursor(WavAudio *src, std::istream *stream);
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virtual ~WavAudioCursor();
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virtual void seek(double offset);
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public:
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virtual int read_samples(int n, int16_t *data);
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bool _is_valid;
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protected:
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// Format codes as used by wave files.
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enum Format {
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F_pcm = 0x0001,
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F_float = 0x0003,
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F_alaw = 0x0006,
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F_mulaw = 0x0007,
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F_extensible = 0xfffe,
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};
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std::istream *_stream;
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StreamReader _reader;
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Format _format;
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double _byte_rate;
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int _block_align;
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int _bytes_per_sample;
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std::streampos _data_start;
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std::streampos _data_pos;
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size_t _data_size;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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MovieAudioCursor::init_type();
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register_type(_type_handle, "WavAudioCursor",
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MovieAudioCursor::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "wavAudioCursor.I"
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#endif // WAVAUDIOCURSOR_H
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