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/*
* HW decode acceleration through NVDEC
*
* Copyright (c) 2016 Anton Khirnov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_NVDEC_H
#define AVCODEC_NVDEC_H
#include "compat/cuda/dynlink_loader.h"
#include <stdint.h>
#include "libavutil/buffer.h"
#include "libavutil/frame.h"
#include "avcodec.h"
#if defined(NVDECAPI_MAJOR_VERSION) && defined(NVDECAPI_MINOR_VERSION)
# define NVDECAPI_CHECK_VERSION(major, minor) \
((major) < NVDECAPI_MAJOR_VERSION || ((major) == NVDECAPI_MAJOR_VERSION && (minor) <= NVDECAPI_MINOR_VERSION))
#else
/* version macros were added in SDK 8.1 ffnvcodec */
# define NVDECAPI_CHECK_VERSION(major, minor) \
((major) < 8 || ((major) == 8 && (minor) <= 0))
#endif
typedef struct NVDECFrame {
unsigned int idx;
AVBufferRef *idx_ref;
AVBufferRef *decoder_ref;
} NVDECFrame;
typedef struct NVDECContext {
CUVIDPICPARAMS pic_params;
AVBufferPool *decoder_pool;
AVBufferRef *decoder_ref;
uint8_t *bitstream;
int bitstream_len;
unsigned int bitstream_allocated;
unsigned *slice_offsets;
int nb_slices;
unsigned int slice_offsets_allocated;
} NVDECContext;
int ff_nvdec_decode_init(AVCodecContext *avctx);
int ff_nvdec_decode_uninit(AVCodecContext *avctx);
int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame);
int ff_nvdec_end_frame(AVCodecContext *avctx);
int ff_nvdec_simple_end_frame(AVCodecContext *avctx);
int ff_nvdec_simple_decode_slice(AVCodecContext *avctx, const uint8_t *buffer,
uint32_t size);
int ff_nvdec_frame_params(AVCodecContext *avctx,
AVBufferRef *hw_frames_ctx,
int dpb_size);
int ff_nvdec_get_ref_idx(AVFrame *frame);
#endif /* AVCODEC_NVDEC_H */
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