dom/media/VorbisUtils.h
author Alexis Beingessner <a.beingessner@gmail.com>
Thu, 10 Oct 2019 23:10:28 +0000
changeset 552383 b6d82b1a6b027461055a92f052d6d0511086a5bb
parent 511623 5f4630838d46dd81dadb13220a4af0da9e23a619
permissions -rw-r--r--
Bug 1587155 - Block all hardware acceleration for AMD driver 22.19.162.4. r=jrmuizel a=lizzard Driver's Haunted. Differential Revision: https://phabricator.services.mozilla.com/D48900

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef VORBISUTILS_H_
#define VORBISUTILS_H_

#ifdef MOZ_SAMPLE_TYPE_S16
#  include <ogg/os_types.h>
typedef ogg_int32_t VorbisPCMValue;

#  define MOZ_CLIP_TO_15(x) ((x) < -32768 ? -32768 : (x) <= 32767 ? (x) : 32767)
// Convert the output of vorbis_synthesis_pcmout to a AudioDataValue
#  define MOZ_CONVERT_VORBIS_SAMPLE(x) \
    (static_cast<AudioDataValue>(MOZ_CLIP_TO_15((x) >> 9)))

#else /* MOZ_SAMPLE_TYPE_FLOAT32 */

typedef float VorbisPCMValue;

#  define MOZ_CONVERT_VORBIS_SAMPLE(x) (x)

#endif

#endif /* VORBISUTILS_H_ */