mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-08-14 10:29:31 +00:00
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
/*
|
|
* Copyright 2013, Mozilla Foundation and contributors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef GMP_AUDIO_FRAME_h_
|
|
#define GMP_AUDIO_FRAME_h_
|
|
|
|
#include <stdint.h>
|
|
#include "gmp-errors.h"
|
|
#include "gmp-decryption.h"
|
|
|
|
enum GMPAudioFormat
|
|
{
|
|
kGMPAudioEncodedSamples, // Raw compressed data, i.e. an AAC/Vorbis packet.
|
|
kGMPAudioIS16Samples, // Interleaved int16_t PCM samples.
|
|
kGMPAudioSamplesFormatInvalid // Should always be last.
|
|
};
|
|
|
|
class GMPAudioSamples {
|
|
public:
|
|
// The format of the buffer.
|
|
virtual GMPAudioFormat GetFormat() = 0;
|
|
virtual void Destroy() = 0;
|
|
|
|
// MAIN THREAD ONLY
|
|
// Buffer size must be exactly what's required to contain all samples in
|
|
// the buffer; every byte is assumed to be part of a sample.
|
|
virtual GMPErr SetBufferSize(uint32_t aSize) = 0;
|
|
|
|
// Size of the buffer in bytes.
|
|
virtual uint32_t Size() = 0;
|
|
|
|
// Timestamps are in microseconds, and are the playback start time of the
|
|
// first sample in the buffer.
|
|
virtual void SetTimeStamp(uint64_t aTimeStamp) = 0;
|
|
virtual uint64_t TimeStamp() = 0;
|
|
virtual const uint8_t* Buffer() const = 0;
|
|
virtual uint8_t* Buffer() = 0;
|
|
|
|
// Get metadata describing how this frame is encrypted, or nullptr if the
|
|
// buffer is not encrypted.
|
|
virtual const GMPEncryptedBufferMetadata* GetDecryptionData() const = 0;
|
|
|
|
virtual uint32_t Channels() const = 0;
|
|
virtual void SetChannels(uint32_t aChannels) = 0;
|
|
|
|
// Rate; the number of frames per second, where a "frame" is one sample for
|
|
// each channel.
|
|
//
|
|
// For IS16 samples, the number of samples should be:
|
|
// Size() / (Channels() * sizeof(int16_t)).
|
|
//
|
|
// Note: Channels() and Rate() may not be constant across a decoding
|
|
// session. For example the rate for decoded samples may be different
|
|
// than the rate advertised by the MP4 container for encoded samples
|
|
// for HE-AAC streams with SBR/PS, and an EME-GMP may need to downsample
|
|
// to satisfy DRM requirements.
|
|
virtual uint32_t Rate() const = 0;
|
|
virtual void SetRate(uint32_t aRate) = 0;
|
|
};
|
|
|
|
#endif // GMP_AUDIO_FRAME_h_
|