video_decompress.h

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/*
 * Copyright (c) 2011-2019 CESNET, z. s. p. o.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of CESNET nor the names of its contributors may be
 *    used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
 
#define VIDEO_DECOMPRESS_ABI_VERSION 6
 
#ifndef __video_decompress_h
#define __video_decompress_h
 
#include "types.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct state_decompress;
 
#define DECOMPRESS_PROPERTY_ACCEPTS_CORRUPTED_FRAME  1          /* int */
 
typedef  void *(*decompress_init_t)();
typedef  int (*decompress_reconfigure_t)(void * state, struct video_desc desc, 
                int rshift, int gshift, int bshift, int pitch, codec_t out_codec);
 
typedef enum {
        DECODER_NO_FRAME = 0, //Frame not decoded yet 
        DECODER_GOT_FRAME,    //Frame decoded and written to destination
        DECODER_GOT_CODEC,    
        DECODER_UNSUPP_PIXFMT, 
} decompress_status;
 
typedef decompress_status (*decompress_decompress_t)(
                void *state,
                unsigned char *dst,
                unsigned char *buffer,
                unsigned int src_len,
                int frame_seq,
                struct video_frame_callbacks *callbacks,
                struct pixfmt_desc *internal_prop);
 
typedef  int (*decompress_get_property_t)(void *state, int property, void *val, size_t *len);
 
typedef  void (*decompress_done_t)(void *);
 
enum vdec_priority {
        VDEC_PRIO_NA       = -1, 
        VDEC_PRIO_PROBE_HI = 50, 
        VDEC_PRIO_PROBE_LO = 80, 
        VDEC_PRIO_PREFERRED =
            200, 
        VDEC_PRIO_NORMAL = 500, 
        VDEC_PRIO_NOT_PREFERRED =
            800, 
        VDEC_PRIO_LOW = 900, 
};
 
typedef int (*decompress_get_priority_t)(codec_t compression, struct pixfmt_desc internal, codec_t ugc);
 
struct video_decompress_info {
        decompress_init_t init;
        decompress_reconfigure_t reconfigure;
        decompress_decompress_t decompress;
        decompress_get_property_t get_property;
        decompress_done_t done;
        decompress_get_priority_t get_decompress_priority;
};
 
bool decompress_init_multi(codec_t compression,
                struct pixfmt_desc internal,
                codec_t to,
                struct state_decompress **out,
                int count);
 
int decompress_reconfigure(struct state_decompress *,
                struct video_desc,
                int rshift,
                int gshift,
                int bshift,
                int pitch,
                codec_t out_codec);
 
decompress_status decompress_frame(struct state_decompress *,
                unsigned char *dst,
                unsigned char *src,
                unsigned int src_len,
                int frame_seq,
                struct video_frame_callbacks *callbacks,
                struct pixfmt_desc *internal_prop);
 
int decompress_get_property(struct state_decompress *state,
                int property,
                void *val,
                size_t *len);
 
void decompress_done(struct state_decompress *);
 
#ifdef __cplusplus
}
#endif
 
#endif /* __video_decompress_h */
 // end of video_decompress