2 Copyright (C) 2008 Grame
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "JackResampler.h"
21 #include "JackError.h"
27 JackRingBuffer::JackRingBuffer(int size
):fRingBufferSize(size
)
29 fRingBuffer
= jack_ringbuffer_create(sizeof(jack_default_audio_sample_t
) * fRingBufferSize
);
30 Reset(fRingBufferSize
);
33 JackRingBuffer::~JackRingBuffer()
36 jack_ringbuffer_free(fRingBuffer
);
40 void JackRingBuffer::Reset(unsigned int new_size
)
42 fRingBufferSize
= new_size
;
43 jack_ringbuffer_reset(fRingBuffer
);
44 jack_ringbuffer_reset_size(fRingBuffer
, sizeof(jack_default_audio_sample_t
) * fRingBufferSize
);
45 jack_ringbuffer_read_advance(fRingBuffer
, (sizeof(jack_default_audio_sample_t
) * new_size
/2));
48 unsigned int JackRingBuffer::ReadSpace()
50 return (jack_ringbuffer_read_space(fRingBuffer
) / sizeof(jack_default_audio_sample_t
));
53 unsigned int JackRingBuffer::WriteSpace()
55 return (jack_ringbuffer_write_space(fRingBuffer
) / sizeof(jack_default_audio_sample_t
));
58 unsigned int JackRingBuffer::Read(jack_default_audio_sample_t
* buffer
, unsigned int frames
)
60 size_t len
= jack_ringbuffer_read_space(fRingBuffer
);
61 jack_log("JackRingBuffer::Read input available = %ld", len
/ sizeof(jack_default_audio_sample_t
));
63 if (len
< frames
* sizeof(jack_default_audio_sample_t
)) {
64 jack_error("JackRingBuffer::Read : producer too slow, missing frames = %d", frames
);
67 jack_ringbuffer_read(fRingBuffer
, (char*)buffer
, frames
* sizeof(jack_default_audio_sample_t
));
72 unsigned int JackRingBuffer::Write(jack_default_audio_sample_t
* buffer
, unsigned int frames
)
74 size_t len
= jack_ringbuffer_write_space(fRingBuffer
);
75 jack_log("JackRingBuffer::Write output available = %ld", len
/ sizeof(jack_default_audio_sample_t
));
77 if (len
< frames
* sizeof(jack_default_audio_sample_t
)) {
78 jack_error("JackRingBuffer::Write : consumer too slow, skip frames = %d", frames
);
81 jack_ringbuffer_write(fRingBuffer
, (char*)buffer
, frames
* sizeof(jack_default_audio_sample_t
));
86 unsigned int JackRingBuffer::Read(void* buffer
, unsigned int bytes
)
88 size_t len
= jack_ringbuffer_read_space(fRingBuffer
);
89 jack_log("JackRingBuffer::Read input available = %ld", len
);
92 jack_error("JackRingBuffer::Read : producer too slow, missing bytes = %d", bytes
);
95 jack_ringbuffer_read(fRingBuffer
, (char*)buffer
, bytes
);
100 unsigned int JackRingBuffer::Write(void* buffer
, unsigned int bytes
)
102 size_t len
= jack_ringbuffer_write_space(fRingBuffer
);
103 jack_log("JackRingBuffer::Write output available = %ld", len
);
106 jack_error("JackRingBuffer::Write : consumer too slow, skip bytes = %d", bytes
);
109 jack_ringbuffer_write(fRingBuffer
, (char*)buffer
, bytes
);
114 unsigned int JackResampler::ReadResample(jack_default_audio_sample_t
* buffer
, unsigned int frames
)
116 return Read(buffer
, frames
);
119 unsigned int JackResampler::WriteResample(jack_default_audio_sample_t
* buffer
, unsigned int frames
)
121 return Write(buffer
, frames
);