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/*
Copyright (C) 2025 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_CUDA_J2K_ENCODER_THREAD
#define DCPOMATIC_CUDA_J2K_ENCODER_THREAD
#include "j2k_sync_encoder_thread.h"
#include <dcp/array_data.h>
#include <dcp/types.h>
#include <nvjpeg2k.h>
class DCPVideo;
/** @class CUDAJ2KEncoderThread
* @brief J2K encoder thread using CUDA via nvidia's nvjpeg2k library.
*
* Each CUDAJ2KEncoderThread sends frames for encoding to a different CUDA
* stream. The thread sends the image and blocks until the result is ready.
*
* This is different to the Grok encoder (that also uses CUDA but via an
* additional paid-for tool called Grok).
*/
class CUDAJ2KEncoderThread : public J2KSyncEncoderThread
{
public:
CUDAJ2KEncoderThread(J2KEncoder& encoder);
~CUDAJ2KEncoderThread();
std::shared_ptr<dcp::ArrayData> encode(DCPVideo const& frame) override;
/* XXX */
void log_thread_start() const override {}
private:
void allocate_pixel_data_d(dcp::Size size);
void free_pixel_data_d();
nvjpeg2kEncoder_t _encoder_handle;
nvjpeg2kEncodeState_t _encode_state;
nvjpeg2kEncodeParams_t _encode_params;
cudaStream_t _stream;
uint8_t* _pixel_data_d[3] = { nullptr, nullptr, nullptr };
size_t _pitch_in_bytes_d[3];
dcp::Size _pixel_data_d_size;
std::vector<int16_t> _xyz_x;
std::vector<int16_t> _xyz_y;
std::vector<int16_t> _xyz_z;
};
#endif
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