android: jpeg: Add JEA implementation

This patch adds JEA implementation to replace libjpeg in CrOS platform,
where hardware accelerator is available.

Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/android/jpeg/encoder_jea.cpp b/src/android/jpeg/encoder_jea.cpp
new file mode 100644
index 00000000..7880a6bd
--- /dev/null
+++ b/src/android/jpeg/encoder_jea.cpp
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Google Inc.
+ *
+ * encoder_jea.cpp - JPEG encoding using CrOS JEA
+ */
+
+#include "encoder_jea.h"
+
+#include "libcamera/internal/mapped_framebuffer.h"
+
+#include <cros-camera/camera_mojo_channel_manager_token.h>
+
+#include "../cros_mojo_token.h"
+#include "../hal_framebuffer.h"
+
+EncoderJea::EncoderJea() = default;
+
+EncoderJea::~EncoderJea() = default;
+
+int EncoderJea::configure(const libcamera::StreamConfiguration &cfg)
+{
+	size_ = cfg.size;
+
+	if (jpegCompressor_)
+		return 0;
+
+	if (gCrosMojoToken == nullptr)
+		return -ENOTSUP;
+
+	jpegCompressor_ = cros::JpegCompressor::GetInstance(gCrosMojoToken);
+
+	return 0;
+}
+
+int EncoderJea::encode(Camera3RequestDescriptor::StreamBuffer *buffer,
+		       libcamera::Span<const uint8_t> exifData,
+		       unsigned int quality)
+{
+	if (!jpegCompressor_)
+		return -ENOTSUP;
+
+	uint32_t outDataSize = 0;
+	const HALFrameBuffer *fb =
+		dynamic_cast<const HALFrameBuffer *>(buffer->srcBuffer);
+
+	if (!jpegCompressor_->CompressImageFromHandle(fb->handle(),
+						      *buffer->camera3Buffer,
+						      size_.width, size_.height,
+						      quality, exifData.data(),
+						      exifData.size(),
+						      &outDataSize))
+		return -EBUSY;
+
+	return outDataSize;
+}