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58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
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// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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module media.mojom;
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import "media/mojo/interfaces/media_types.mojom";
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import "mojo/common/time.mojom";
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import "ui/gfx/geometry/mojo/geometry.mojom";
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// Decode errors (see media/video/jpeg_decode_accelerator.h).
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enum DecodeError {
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NO_ERRORS,
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INVALID_ARGUMENT,
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UNREADABLE_INPUT,
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PARSE_JPEG_FAILED,
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UNSUPPORTED_JPEG,
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PLATFORM_FAILURE,
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};
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// This defines a mojo transport format for media::BitstreamBuffer (see
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// media/base/bitstream_buffer.h).
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struct BitstreamBuffer {
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int32 id;
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handle<shared_buffer> memory_handle;
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uint32 size;
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int64 offset;
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mojo.common.mojom.TimeDelta timestamp;
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string key_id;
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string iv;
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array<SubsampleEntry> subsamples;
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};
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// GPU process interface exposed to the browser for decoding JPEG images.
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interface JpegDecodeAccelerator {
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// Initializes the JPEG decoder. Should be called once per decoder
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// construction and before using Decode(). This call returns true if
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// initialization is successful.
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Initialize() => (bool success);
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// Decodes the given bitstream buffer that contains one JPEG image.
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// The image is decoded from shared memory |input_buffer.memory_handle|
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// with size |input_buffer.size|. The input buffer is associated with
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// |input_buffer.id|and the size of JPEG image is |coded_size|. Decoded I420
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// frame data will be put onto shared memory associated with |output_handle|
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// with allocated size |output_buffer_size|.
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// Returns |bitstream_buffer_id| and |error| in a callback to notify the
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// decode status. |bitstream_buffer_id| is the id of BitstreamBuffer
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// |input_buffer| and |error| is the error code.
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Decode(BitstreamBuffer input_buffer, gfx.mojom.Size coded_size,
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handle<shared_buffer> output_handle, uint32 output_buffer_size)
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=> (int32 bitstream_buffer_id, DecodeError error);
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// TODO(c.padhi): This method might not be required, see
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// http://crbug.com/699255.
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Uninitialize();
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};
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