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Diffstat (limited to 'dom/media/gmp/gmp-api/gmp-video-decode.h')
| -rw-r--r-- | dom/media/gmp/gmp-api/gmp-video-decode.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/dom/media/gmp/gmp-api/gmp-video-decode.h b/dom/media/gmp/gmp-api/gmp-video-decode.h new file mode 100644 index 000000000..e07a7525e --- /dev/null +++ b/dom/media/gmp/gmp-api/gmp-video-decode.h @@ -0,0 +1,127 @@ +/* -*- 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_DECODE_h_ +#define GMP_VIDEO_DECODE_h_ + +#include "gmp-errors.h" +#include "gmp-video-frame-i420.h" +#include "gmp-video-frame-encoded.h" +#include "gmp-video-codec.h" +#include <stdint.h> + +// ALL METHODS MUST BE CALLED ON THE MAIN THREAD +class GMPVideoDecoderCallback +{ +public: + virtual ~GMPVideoDecoderCallback() {} + + virtual void Decoded(GMPVideoi420Frame* aDecodedFrame) = 0; + + virtual void ReceivedDecodedReferenceFrame(const uint64_t aPictureId) = 0; + + virtual void ReceivedDecodedFrame(const uint64_t aPictureId) = 0; + + virtual void InputDataExhausted() = 0; + + virtual void DrainComplete() = 0; + + virtual void ResetComplete() = 0; + + // Called when the decoder encounters a catestrophic error and cannot + // continue. Gecko will not send any more input for decoding. + virtual void Error(GMPErr aError) = 0; +}; + +#define GMP_API_VIDEO_DECODER "decode-video" + +// Video decoding for a single stream. A GMP may be asked to create multiple +// decoders concurrently. +// +// API name macro: GMP_API_VIDEO_DECODER +// Host API: GMPVideoHost +// +// ALL METHODS MUST BE CALLED ON THE MAIN THREAD +class GMPVideoDecoder +{ +public: + virtual ~GMPVideoDecoder() {} + + // - aCodecSettings: Details of decoder to create. + // - aCodecSpecific: codec specific data, cast to a GMPVideoCodecXXX struct + // to get codec specific config data. + // - aCodecSpecificLength: number of bytes in aCodecSpecific. + // - aCallback: Subclass should retain reference to it until DecodingComplete + // is called. Do not attempt to delete it, host retains ownership. + // aCoreCount: number of CPU cores. + virtual void InitDecode(const GMPVideoCodec& aCodecSettings, + const uint8_t* aCodecSpecific, + uint32_t aCodecSpecificLength, + GMPVideoDecoderCallback* aCallback, + int32_t aCoreCount) = 0; + + // Decode encoded frame (as a part of a video stream). The decoded frame + // will be returned to the user through the decode complete callback. + // + // - aInputFrame: Frame to decode. Call Destroy() on frame when it's decoded. + // - aMissingFrames: True if one or more frames have been lost since the + // previous decode call. + // - aCodecSpecificInfo : codec specific data, pointer to a + // GMPCodecSpecificInfo structure appropriate for + // this codec type. + // - aCodecSpecificInfoLength : number of bytes in aCodecSpecificInfo + // - renderTimeMs : System time to render in milliseconds. Only used by + // decoders with internal rendering. + virtual void Decode(GMPVideoEncodedFrame* aInputFrame, + bool aMissingFrames, + const uint8_t* aCodecSpecificInfo, + uint32_t aCodecSpecificInfoLength, + int64_t aRenderTimeMs = -1) = 0; + + // Reset decoder state and prepare for a new call to Decode(...). + // Flushes the decoder pipeline. + // The decoder should enqueue a task to run ResetComplete() on the main + // thread once the reset has finished. + virtual void Reset() = 0; + + // Output decoded frames for any data in the pipeline, regardless of ordering. + // All remaining decoded frames should be immediately returned via callback. + // The decoder should enqueue a task to run DrainComplete() on the main + // thread once the reset has finished. + virtual void Drain() = 0; + + // May free decoder memory. + virtual void DecodingComplete() = 0; +}; + +#endif // GMP_VIDEO_DECODE_h_ |