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#ifndef IMAGE_IO_JPEG_JPEG_APPLE_DEPTH_BUILDER_H_ // NOLINT
#define IMAGE_IO_JPEG_JPEG_APPLE_DEPTH_BUILDER_H_ // NOLINT
#include <vector>
#include "image_io/base/data_destination.h"
#include "image_io/base/data_range.h"
#include "image_io/base/data_source.h"
namespace photos_editing_formats {
namespace image_io {
/// Builds an Apple depth file containing a (possibly scaled down) primary image
/// and original depth image.
class JpegAppleDepthBuilder {
public:
JpegAppleDepthBuilder()
: primary_image_data_source_(nullptr),
depth_image_data_source_(nullptr),
data_destination_(nullptr) {}
/// @param primary_image_data_source The data source containing the primary
/// image. The builder uses the first image in this data source.
/// @param depth_image_data_source The data source containing the depth image.
/// The builder finds the depth image using a JpegInfoBuilder and the
/// JpegInfo::GetAppleDepthImageRange() function. Consequently, this
/// image source must refer a valid Apple depth file.
/// @param data_destination The data destination for the combined primary
/// and depth images.
/// @return Whether the building and transfer was successful.
bool Run(DataSource* primary_image_data_source,
DataSource* depth_image_data_source,
DataDestination* data_destination);
private:
/// Gets the data associated with the primary image its data source.
/// @return Whether the primary image data was gotten successfully.
bool GetPrimaryImageData();
/// Gets the data associated with the depth image from its data source.
/// @return Whether the depth image data was gotten successfully.
bool GetDepthImageData();
/// Transfers the primary image from its data source to the data destination,
/// adding and transforming the jpeg segments it needs to make the resulting
/// data destination a valid Apple depth file.
/// @return Whether the transfer was successful or not.
bool TransferPrimaryImage();
/// Transfers the depth image from its data source to the data destination.
/// @return Whether the transfer was successful or not.
bool TransferDepthImage();
/// Modifies the existing primary Jfif segment to contain the information
/// needed for a valid Apple depth file, and transfers the result to the data
/// destination.
/// @param jfif_length_delta The increased size of the Jfif segment.
/// @return Whether the transfer was successful or not.
bool TransferNewJfifSegment(size_t *jfif_length_delta);
/// Creates a new Mpf segment needed for a valid Apple depth file and
/// transfers the result to the data destination.
/// @param jfif_length_delta The increased size of the Jfif segment.
/// @return Whether the transfer was successful or not.
bool TransferNewMpfSegment(size_t jfif_length_delta);
/// @param data_source The data source from which to transfer bytes to the
/// data destination.
/// @param data_range The data range in the data source to transfer.
bool TransferData(DataSource *data_source, const DataRange& data_range);
/// The data source containing the primary image.
DataSource* primary_image_data_source_;
/// The data source representing a valid Apple depth file.
DataSource* depth_image_data_source_;
/// The final destination of the new Apple depth data.
DataDestination* data_destination_;
/// The range in the primary image data source containing the primary image.
DataRange primary_image_range_;
/// The range in the primary image data source containing the primary image's
/// Jfif segment.
DataRange primary_image_jfif_segment_range_;
/// The bytes of the primary image's Jfif segment.
std::vector<Byte> primary_image_jfif_segment_bytes_;
/// The range in the primary image data source containing the primary images's
/// Mpf segment, or the location at a new Mpf segment should be written.
DataRange primary_image_mpf_segment_range_;
/// The range in the depth image data source containing the depth image.
DataRange depth_image_range_;
};
} // namespace image_io
} // namespace photos_editing_formats
#endif // IMAGE_IO_JPEG_JPEG_APPLE_DEPTH_BUILDER_H_ // NOLINT
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