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- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- module chromeos_camera.mojom;
- import "components/chromeos_camera/common/dmabuf.mojom";
- import "media/mojo/mojom/media_types.mojom";
- // Encode errors (see components/chromeos_camera/jpeg_encode_accelerator.h).
- enum EncodeStatus {
- ENCODE_OK,
- HW_JPEG_ENCODE_NOT_SUPPORTED,
- THREAD_CREATION_FAILED,
- INVALID_ARGUMENT,
- INACCESSIBLE_OUTPUT_BUFFER,
- PARSE_IMAGE_FAILED,
- PLATFORM_FAILURE,
- };
- // GPU process interface exposed to the browser for encoding JPEG images.
- interface JpegEncodeAccelerator {
- // Initializes the JPEG encoder. Should be called once per encoder
- // construction and before using EncodeWithFD(). This call returns true if
- // initialization is successful.
- Initialize() => (bool success);
- // TODO(wtlee): To be deprecated. (crbug.com/944705)
- //
- // Encodes the given buffer that contains one I420 image.
- // |input_fd| and |output_fd| are file descriptors of shared memory.
- // The image is encoded from memory of |input_fd|
- // with size |input_buffer_size|. |task_id| is used to distinguish different
- // tasks. The dimension of I420 image is |coded_size_width| and
- // |coded_size_height|.
- // |exif_fd| is the shared memory buffer, with |exif_buffer_size| as size,
- // containing Exif data which will be put onto APP1 segment in the output
- // JPEG image.
- // Encoded JPEG image will be put onto memory associated with |output_fd|
- // with allocated size |output_buffer_size|.
- // Returns |task_id| and |error| in a callback to notify the
- // encode status. |status| is the status code. |encoded_buffer_size| is the
- // actual size of the encoded JPEG.
- EncodeWithFD(int32 task_id, handle input_fd, uint32 input_buffer_size,
- int32 coded_size_width, int32 coded_size_height,
- handle exif_fd, uint32 exif_buffer_size,
- handle output_fd, uint32 output_buffer_size)
- => (int32 task_id, uint32 encoded_buffer_size, EncodeStatus status);
- // Encodes the given DMA-buf. |task_id| is used to distinguish different
- // tasks. The size of input image defined in |coded_size_width| and
- // |coded_size_height| and the format |input_format| represents by its fourcc
- // value. The plane information of input DMA-buf and output DMA-buf is stored
- // in |input_planes| and |output_planes| respectively. Although the actual
- // amount of buffers could be equal to or less than the number of planes, the
- // amount of plane information |input_planes| and |output_planes| should be
- // same as the number of planes. |exif_handle| is the shared memory buffer,
- // with |exif_buffer_size| as size, containing Exif data which will be put
- // onto APP1 segment in the output JPEG image. |quality| is the quality of
- // JPEG image. The range is from 1~100. High value means high quality. When
- // the task ends, it returns |status| as the status code and
- // |encoded_buffer_size| is the actual size of the encoded JPEG.
- EncodeWithDmaBuf(
- int32 task_id,
- uint32 input_format,
- array<DmaBufPlane> input_planes,
- array<DmaBufPlane> output_planes,
- handle exif_handle,
- uint32 exif_buffer_size,
- int32 coded_size_width,
- int32 coded_size_height,
- int32 quality)
- => (uint32 encoded_buffer_size, EncodeStatus status);
- };
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