1 #ifndef foosampleutilhfoo
2 #define foosampleutilhfoo
5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
10 PulseAudio is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Lesser General Public License as published
12 by the Free Software Foundation; either version 2 of the License,
13 or (at your option) any later version.
15 PulseAudio is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <pulse/sample.h>
27 #include <pulse/volume.h>
28 #include <pulsecore/memblock.h>
29 #include <pulsecore/memchunk.h>
31 typedef struct pa_silence_cache
{
32 pa_memblock
* blocks
[PA_SAMPLE_MAX
];
35 void pa_silence_cache_init(pa_silence_cache
*cache
);
36 void pa_silence_cache_done(pa_silence_cache
*cache
);
38 void *pa_silence_memory(void *p
, size_t length
, const pa_sample_spec
*spec
);
39 pa_memchunk
* pa_silence_memchunk(pa_memchunk
*c
, const pa_sample_spec
*spec
);
40 pa_memblock
* pa_silence_memblock(pa_memblock
*b
, const pa_sample_spec
*spec
);
42 pa_memchunk
* pa_silence_memchunk_get(pa_silence_cache
*cache
, pa_mempool
*pool
, pa_memchunk
* ret
, const pa_sample_spec
*spec
, size_t length
);
44 typedef struct pa_mix_info
{
49 /* The following fields are used internally by pa_mix(), should
50 * not be initialised by the caller of pa_mix(). */
55 } linear
[PA_CHANNELS_MAX
];
59 pa_mix_info channels
[],
63 const pa_sample_spec
*spec
,
64 const pa_cvolume
*volume
,
67 void pa_volume_memchunk(
69 const pa_sample_spec
*spec
,
70 const pa_cvolume
*volume
);
72 size_t pa_frame_align(size_t l
, const pa_sample_spec
*ss
) PA_GCC_PURE
;
74 int pa_frame_aligned(size_t l
, const pa_sample_spec
*ss
) PA_GCC_PURE
;
76 void pa_interleave(const void *src
[], unsigned channels
, void *dst
, size_t ss
, unsigned n
);
77 void pa_deinterleave(const void *src
, void *dst
[], unsigned channels
, size_t ss
, unsigned n
);
79 void pa_sample_clamp(pa_sample_format_t format
, void *dst
, size_t dstr
, const void *src
, size_t sstr
, unsigned n
);
81 pa_usec_t
pa_bytes_to_usec_round_up(uint64_t length
, const pa_sample_spec
*spec
);
82 size_t pa_usec_to_bytes_round_up(pa_usec_t t
, const pa_sample_spec
*spec
);