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47 lines
2.0 KiB
Plaintext
47 lines
2.0 KiB
Plaintext
// Copyright 2018 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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// Encode errors (see media/video/jpeg_encode_accelerator.h).
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enum EncodeStatus {
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ENCODE_OK,
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HW_JPEG_ENCODE_NOT_SUPPORTED,
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THREAD_CREATION_FAILED,
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INVALID_ARGUMENT,
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INACCESSIBLE_OUTPUT_BUFFER,
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PARSE_IMAGE_FAILED,
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PLATFORM_FAILURE,
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};
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// GPU process interface exposed to the browser for encoding JPEG images.
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interface JpegEncodeAccelerator {
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// Initializes the JPEG encoder. Should be called once per encoder
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// construction and before using EncodeWithFD(). This call returns true if
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// initialization is successful.
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Initialize() => (bool success);
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// Encodes the given buffer that contains one I420 image.
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// |input_fd| and |output_fd| are file descriptors of shared memory.
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// The image is encoded from memory of |input_fd|
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// with size |input_buffer_size|. The output buffer is associated with
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// |buffer_id| and the dimension of I420 image is |coded_size_width| and
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// |coded_size_height|.
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// |exif_fd| is the shared memory buffer, with |exif_buffer_size| as size,
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// containing Exif data which will be put onto APP1 segment in the output
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// JPEG image.
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// Encoded JPEG image will be put onto memory associated with |output_fd|
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// with allocated size |output_buffer_size|.
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// Returns |buffer_id| and |error| in a callback to notify the
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// encode status. |buffer_id| is the id of |output_buffer| and |status| is the
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// status code. |encoded_buffer_size| is the actual size of the encoded JPEG.
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EncodeWithFD(int32 buffer_id, handle input_fd, uint32 input_buffer_size,
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int32 coded_size_width, int32 coded_size_height,
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handle exif_fd, uint32 exif_buffer_size,
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handle output_fd, uint32 output_buffer_size)
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=> (int32 buffer_id, uint32 encoded_buffer_size, EncodeStatus status);
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};
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