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120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
#ifndef KVAZAAR_H_
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#define KVAZAAR_H_
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/*****************************************************************************
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* This file is part of Kvazaar HEVC encoder.
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*
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* Copyright (C) 2013-2015 Tampere University of Technology and others (see
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* COPYING file).
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*
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* Kvazaar is free software: you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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*
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* Kvazaar is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with Kvazaar. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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/**
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* \file
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* \brief This file defines the public API of Kvazaar when used as a library.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include "kvazaar_version.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct config_t kvz_cfg;
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typedef struct encoder_state_t encoder_state_t;
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typedef union bitstream_t kvz_payload;
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typedef struct encoder_control_t encoder_control_t;
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typedef struct image_t kvz_picture;
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#define BIT_DEPTH 8
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#if BIT_DEPTH == 8
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typedef uint8_t pixel_t;
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#else
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typedef uint16_t pixel_t;
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#endif
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/**
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* \brief Struct which contains all picture data
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*/
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typedef struct image_t {
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pixel_t *fulldata; //!< \brief Allocated buffer (only used in the base_image)
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pixel_t *y; //!< \brief Pointer to luma pixel array.
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pixel_t *u; //!< \brief Pointer to chroma U pixel array.
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pixel_t *v; //!< \brief Pointer to chroma V pixel array.
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pixel_t *data[3]; //!< \brief Alternate access method to same data.
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int32_t width; //!< \brief Luma pixel array width.
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int32_t height; //!< \brief Luma pixel array height.
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int32_t stride; //!< \brief Luma pixel array width for the full picture (should be used as stride)
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struct image_t * base_image; //!< \brief Pointer to the image to which the pixels belong
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int32_t refcount; //!< \brief Number of references in reflist to the picture
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int32_t poc; //!< \brief Picture order count
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} image_t;
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/**
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* Main datastructure representing one instance of the encoder.
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* - encoder_open
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* - encoder_close
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*/
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typedef struct kvz_encoder {
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encoder_control_t* control;
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encoder_state_t* states;
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unsigned num_encoder_states;
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unsigned cur_state_num;
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unsigned frames_started;
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unsigned frames_done;
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size_t bitstream_length;
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} kvz_encoder;
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typedef struct kvz_api {
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kvz_cfg * (*config_alloc)(void);
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int (*config_destroy)(kvz_cfg *);
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int (*config_init)(kvz_cfg *);
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int (*config_parse)(kvz_cfg *, const char *name, const char *value);
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kvz_encoder * (*encoder_open)(kvz_cfg *);
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void (*encoder_close)(kvz_encoder *);
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// \brief Encode one picture.
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// \param encoder
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// \param pic_in Picture containing the encoded data.
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// \param pic_out Picture containing the reconstructed data.
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// \param nals_out The first NAL containing bitstream generated, or NULL.
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// \return 1 on success, negative on error.
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int (*encoder_encode)(kvz_encoder *encoder, kvz_picture *pic_in, kvz_picture **pic_out, kvz_payload *payload);
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} kvz_api;
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// Append API version to the getters name to prevent linking against incompatible versions.
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#define KVZ_API_CONCAT(func, version) func ## _apiv ## version
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#define KVZ_API_EXPAND_VERSION(func, version) KVZ_API_CONCAT(func, version)
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#define kvz_api_get KVZ_API_EXPAND_VERSION(kvz_api_get, KVZ_API_VERSION)
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const kvz_api* kvz_api_get(int bit_depth);
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#ifdef __cplusplus
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}
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#endif
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#endif // KVAZAAR_H_
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