mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/* -*- 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 <stdint.h>
|
|
|
|
#include <opus/opus.h>
|
|
#include "opus/opus_multistream.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);
|
|
|
|
// 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<nsCString> mTags; // Unparsed comment strings from the header.
|
|
|
|
nsCString mVendorString; // Encoder vendor string from the header.
|
|
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|