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71 lines
2.2 KiB
C++
Executable File
71 lines
2.2 KiB
C++
Executable File
/*
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AudioGeneratorOpus
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Audio output generator that plays Opus audio files
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Copyright (C) 2020 Earle F. Philhower, III
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _AUDIOGENERATOROPUS_H
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#define _AUDIOGENERATOROPUS_H
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#include <AudioGenerator.h>
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//#include "libopus/opus.h"
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#include "opusfile/opusfile.h"
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class AudioGeneratorOpus : public AudioGenerator
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{
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public:
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AudioGeneratorOpus();
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virtual ~AudioGeneratorOpus() override;
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virtual bool begin(AudioFileSource *source, AudioOutput *output) override;
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virtual bool loop() override;
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virtual bool stop() override;
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virtual bool isRunning() override;
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protected:
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// Opus callbacks, need static functions to bounce into C++ from C
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static int OPUS_read(void *_stream, unsigned char *_ptr, int _nbytes) {
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return static_cast<AudioGeneratorOpus*>(_stream)->read_cb(_ptr, _nbytes);
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}
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static int OPUS_seek(void *_stream, opus_int64 _offset, int _whence) {
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return static_cast<AudioGeneratorOpus*>(_stream)->seek_cb(_offset, _whence);
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}
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static opus_int64 OPUS_tell(void *_stream) {
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return static_cast<AudioGeneratorOpus*>(_stream)->tell_cb();
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}
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static int OPUS_close(void *_stream) {
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return static_cast<AudioGeneratorOpus*>(_stream)->close_cb();
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}
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// Actual Opus callbacks
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int read_cb(unsigned char *_ptr, int _nbytes);
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int seek_cb(opus_int64 _offset, int _whence);
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opus_int64 tell_cb();
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int close_cb();
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private:
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OpusFileCallbacks cb = {OPUS_read, OPUS_seek, OPUS_tell, OPUS_close};
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OggOpusFile *of;
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int prev_li; // To detect changes in streams
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int16_t *buff;
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uint32_t buffPtr;
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uint32_t buffLen;
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};
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#endif
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