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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/chromeos_camera/common/mjpeg_decode_accelerator_mojom_traits.h"
#include "base/check.h"
#include "base/memory/platform_shared_memory_region.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "base/notreached.h"
#include "base/numerics/checked_math.h"
#include "base/time/time.h"
#include "media/base/ipc/media_param_traits_macros.h"
#include "mojo/public/cpp/base/time_mojom_traits.h"
#include "mojo/public/cpp/system/platform_handle.h"
namespace mojo {
// static
chromeos_camera::mojom::DecodeError
EnumTraits<chromeos_camera::mojom::DecodeError,
chromeos_camera::MjpegDecodeAccelerator::Error>::
ToMojom(chromeos_camera::MjpegDecodeAccelerator::Error error) {
switch (error) {
case chromeos_camera::MjpegDecodeAccelerator::NO_ERRORS:
return chromeos_camera::mojom::DecodeError::NO_ERRORS;
case chromeos_camera::MjpegDecodeAccelerator::INVALID_ARGUMENT:
return chromeos_camera::mojom::DecodeError::INVALID_ARGUMENT;
case chromeos_camera::MjpegDecodeAccelerator::UNREADABLE_INPUT:
return chromeos_camera::mojom::DecodeError::UNREADABLE_INPUT;
case chromeos_camera::MjpegDecodeAccelerator::PARSE_JPEG_FAILED:
return chromeos_camera::mojom::DecodeError::PARSE_JPEG_FAILED;
case chromeos_camera::MjpegDecodeAccelerator::UNSUPPORTED_JPEG:
return chromeos_camera::mojom::DecodeError::UNSUPPORTED_JPEG;
case chromeos_camera::MjpegDecodeAccelerator::PLATFORM_FAILURE:
return chromeos_camera::mojom::DecodeError::PLATFORM_FAILURE;
}
NOTREACHED();
}
// static
bool EnumTraits<chromeos_camera::mojom::DecodeError,
chromeos_camera::MjpegDecodeAccelerator::Error>::
FromMojom(chromeos_camera::mojom::DecodeError error,
chromeos_camera::MjpegDecodeAccelerator::Error* out) {
switch (error) {
case chromeos_camera::mojom::DecodeError::NO_ERRORS:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::NO_ERRORS;
return true;
case chromeos_camera::mojom::DecodeError::INVALID_ARGUMENT:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::INVALID_ARGUMENT;
return true;
case chromeos_camera::mojom::DecodeError::UNREADABLE_INPUT:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::UNREADABLE_INPUT;
return true;
case chromeos_camera::mojom::DecodeError::PARSE_JPEG_FAILED:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::PARSE_JPEG_FAILED;
return true;
case chromeos_camera::mojom::DecodeError::UNSUPPORTED_JPEG:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::UNSUPPORTED_JPEG;
return true;
case chromeos_camera::mojom::DecodeError::PLATFORM_FAILURE:
*out = chromeos_camera::MjpegDecodeAccelerator::Error::PLATFORM_FAILURE;
return true;
}
NOTREACHED();
}
// static
mojo::ScopedSharedBufferHandle StructTraits<
chromeos_camera::mojom::BitstreamBufferDataView,
media::BitstreamBuffer>::memory_handle(media::BitstreamBuffer& input) {
base::subtle::PlatformSharedMemoryRegion input_region =
base::UnsafeSharedMemoryRegion::TakeHandleForSerialization(
input.TakeRegion());
DCHECK(input_region.IsValid()) << "Bad BitstreamBuffer handle";
// TODO(crbug.com/40553989): Split BitstreamBuffers into ReadOnly and
// Unsafe versions corresponding to usage, eg video encode accelerators will
// use writable mappings but audio uses are readonly (see
// android_video_encode_accelerator.cc and
// vt_video_encode_accelerator_mac.cc).
return mojo::WrapPlatformSharedMemoryRegion(std::move(input_region));
}
// static
bool StructTraits<chromeos_camera::mojom::BitstreamBufferDataView,
media::BitstreamBuffer>::
Read(chromeos_camera::mojom::BitstreamBufferDataView input,
media::BitstreamBuffer* output) {
base::TimeDelta timestamp;
if (!input.ReadTimestamp(×tamp))
return false;
std::string key_id;
if (!input.ReadKeyId(&key_id))
return false;
std::string iv;
if (!input.ReadIv(&iv))
return false;
std::vector<media::SubsampleEntry> subsamples;
if (!input.ReadSubsamples(&subsamples))
return false;
mojo::ScopedSharedBufferHandle handle = input.TakeMemoryHandle();
if (!handle.is_valid())
return false;
auto region = base::UnsafeSharedMemoryRegion::Deserialize(
mojo::UnwrapPlatformSharedMemoryRegion(std::move(handle)));
if (!region.IsValid())
return false;
auto offset = base::MakeCheckedNum(input.offset()).Cast<uint64_t>();
if (!offset.IsValid())
return false;
media::BitstreamBuffer bitstream_buffer(input.id(), std::move(region),
input.size(), offset.ValueOrDie(),
timestamp);
if (key_id.size()) {
// Note that BitstreamBuffer currently ignores how each buffer is
// encrypted and uses the settings from the Audio/VideoDecoderConfig.
bitstream_buffer.SetDecryptionSettings(key_id, iv, subsamples);
}
*output = std::move(bitstream_buffer);
return true;
}
} // namespace mojo
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