From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- dom/media/ogg/OpusParser.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 dom/media/ogg/OpusParser.h (limited to 'dom/media/ogg/OpusParser.h') diff --git a/dom/media/ogg/OpusParser.h b/dom/media/ogg/OpusParser.h new file mode 100644 index 0000000000..fc2fc5094d --- /dev/null +++ b/dom/media/ogg/OpusParser.h @@ -0,0 +1,48 @@ +/* -*- 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/. */ +#if !defined(OpusParser_h_) +# define OpusParser_h_ + +# include "nsTArray.h" +# include "nsString.h" + +namespace mozilla { + +class OpusParser { + public: + OpusParser(); + + bool DecodeHeader(unsigned char* aData, size_t aLength); + bool DecodeTags(unsigned char* aData, size_t aLength); + static bool IsValidMapping2ChannelsCount(uint8_t aChannels); + + // Various fields from the Ogg Opus header. + int mRate; // Sample rate the decoder uses (always 48 kHz). + uint32_t mNominalRate; // Original sample rate of the data (informational). + int mChannels; // Number of channels the stream encodes. + uint16_t mPreSkip; // Number of samples to strip after decoder reset. +# ifdef MOZ_SAMPLE_TYPE_FLOAT32 + float mGain; // Gain to apply to decoder output. +# else + int32_t mGain_Q16; // Gain to apply to the decoder output. +# endif + int mChannelMapping; // Channel mapping family. + int mStreams; // Number of packed streams in each packet. + int mCoupledStreams; // Number of packed coupled streams in each packet. + unsigned char mMappingTable[255]; // Channel mapping table. + + // Granule position (end sample) of the last decoded Opus packet. This is + // used to calculate the amount we should trim from the last packet. + int64_t mPrevPacketGranulepos; + + nsTArray mTags; // Unparsed comment strings from the header. + + nsCString mVendorString; // Encoder vendor string from the header. +}; + +} // namespace mozilla + +#endif -- cgit v1.2.3