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| -rw-r--r-- | dom/media/gmp/gmp-api/gmp-video-encode.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/dom/media/gmp/gmp-api/gmp-video-encode.h b/dom/media/gmp/gmp-api/gmp-video-encode.h new file mode 100644 index 0000000000..850d34abd1 --- /dev/null +++ b/dom/media/gmp/gmp-api/gmp-video-encode.h @@ -0,0 +1,133 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* Copyright (c) 2011, The WebRTC project authors. All rights reserved. + * Copyright (c) 2014, Mozilla + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + ** Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + ** Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + ** Neither the name of Google nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef GMP_VIDEO_ENCODE_h_ +#define GMP_VIDEO_ENCODE_h_ + +#include <vector> +#include <stdint.h> + +#include "gmp-errors.h" +#include "gmp-video-frame-i420.h" +#include "gmp-video-frame-encoded.h" +#include "gmp-video-codec.h" + +// ALL METHODS MUST BE CALLED ON THE MAIN THREAD +class GMPVideoEncoderCallback { + public: + virtual ~GMPVideoEncoderCallback() {} + + virtual void Encoded(GMPVideoEncodedFrame* aEncodedFrame, + const uint8_t* aCodecSpecificInfo, + uint32_t aCodecSpecificInfoLength) = 0; + + // Called when the encoder encounters a catestrophic error and cannot + // continue. Gecko will not send any more input for encoding. + virtual void Error(GMPErr aError) = 0; +}; + +#define GMP_API_VIDEO_ENCODER "encode-video" + +// Video encoding for a single stream. A GMP may be asked to create multiple +// encoders concurrently. +// +// API name macro: GMP_API_VIDEO_ENCODER +// Host API: GMPVideoHost +// +// ALL METHODS MUST BE CALLED ON THE MAIN THREAD +class GMPVideoEncoder { + public: + virtual ~GMPVideoEncoder() {} + + // Initialize the encoder with the information from the VideoCodec. + // + // Input: + // - codecSettings : Codec settings + // - aCodecSpecific : codec specific data, pointer to a + // GMPCodecSpecific structure appropriate for + // this codec type. + // - aCodecSpecificLength : number of bytes in aCodecSpecific + // - aCallback: Subclass should retain reference to it until EncodingComplete + // is called. Do not attempt to delete it, host retains + // ownership. + // - aNnumberOfCores : Number of cores available for the encoder + // - aMaxPayloadSize : The maximum size each payload is allowed + // to have. Usually MTU - overhead. + virtual void InitEncode(const GMPVideoCodec& aCodecSettings, + const uint8_t* aCodecSpecific, + uint32_t aCodecSpecificLength, + GMPVideoEncoderCallback* aCallback, + int32_t aNumberOfCores, uint32_t aMaxPayloadSize) = 0; + + // Encode an I420 frame (as a part of a video stream). The encoded frame + // will be returned to the user through the encode complete callback. + // + // Input: + // - aInputFrame : Frame to be encoded + // - aCodecSpecificInfo : codec specific data, pointer to a + // GMPCodecSpecificInfo structure appropriate for + // this codec type. + // - aCodecSpecificInfoLength : number of bytes in aCodecSpecific + // - aFrameTypes : The frame type to encode + // - aFrameTypesLength : The number of elements in aFrameTypes array. + virtual void Encode(GMPVideoi420Frame* aInputFrame, + const uint8_t* aCodecSpecificInfo, + uint32_t aCodecSpecificInfoLength, + const GMPVideoFrameType* aFrameTypes, + uint32_t aFrameTypesLength) = 0; + + // Inform the encoder about the packet loss and round trip time on the + // network used to decide the best pattern and signaling. + // + // - packetLoss : Fraction lost (loss rate in percent = + // 100 * packetLoss / 255) + // - rtt : Round-trip time in milliseconds + virtual void SetChannelParameters(uint32_t aPacketLoss, uint32_t aRTT) = 0; + + // Inform the encoder about the new target bit rate. + // + // - newBitRate : New target bit rate + // - frameRate : The target frame rate + virtual void SetRates(uint32_t aNewBitRate, uint32_t aFrameRate) = 0; + + // Use this function to enable or disable periodic key frames. Can be useful + // for codecs which have other ways of stopping error propagation. + // + // - enable : Enable or disable periodic key frames + virtual void SetPeriodicKeyFrames(bool aEnable) = 0; + + // May free Encoder memory. + virtual void EncodingComplete() = 0; +}; + +#endif // GMP_VIDEO_ENCODE_h_ |