content/media/VorbisUtils.h

branch
TOR_BUG_9701
changeset 8
97036ab72558
equal deleted inserted replaced
-1:000000000000 0:9cf3ea879ecf
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #ifndef VORBISUTILS_H_
8 #define VORBISUTILS_H_
9
10 #ifdef MOZ_SAMPLE_TYPE_S16
11 #include <ogg/os_types.h>
12 typedef ogg_int32_t VorbisPCMValue;
13
14 #define MOZ_CLIP_TO_15(x) ((x)<-32768?-32768:(x)<=32767?(x):32767)
15 // Convert the output of vorbis_synthesis_pcmout to a AudioDataValue
16 #define MOZ_CONVERT_VORBIS_SAMPLE(x) \
17 (static_cast<AudioDataValue>(MOZ_CLIP_TO_15((x)>>9)))
18
19 #else /* MOZ_SAMPLE_TYPE_FLOAT32 */
20
21 typedef float VorbisPCMValue;
22
23 #define MOZ_CONVERT_VORBIS_SAMPLE(x) (x)
24
25 #endif
26
27 #endif /* VORBISUTILS_H_ */

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