/*
 * Bytestream functions
 * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
 *
 * simple math operations
 * Copyright (c) 2001, 2002 Fabrice Bellard
 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
 *
 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
 *
 * copyright (c) 2001 Fabrice Bellard
 *
 * 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 FFCODEC_FFMISC_H
#define FFCODEC_FFMISC_H


#ifndef AV_RL16
#   define AV_RL16(x)                           \
    ((((const uint8_t*)(x))[1] << 8) |          \
      ((const uint8_t*)(x))[0])
#endif
#ifndef AV_RB24
#   define AV_RB24(x)                           \
    ((((const uint8_t*)(x))[0] << 16) |         \
     (((const uint8_t*)(x))[1] <<  8) |         \
      ((const uint8_t*)(x))[2])
#endif
#ifndef AV_RB32
#   define AV_RB32(x)                           \
    ((((const uint8_t*)(x))[0] << 24) |         \
     (((const uint8_t*)(x))[1] << 16) |         \
     (((const uint8_t*)(x))[2] <<  8) |         \
      ((const uint8_t*)(x))[3])
#endif
#ifndef AV_RB64
#   define AV_RB64(x)                                   \
    (((uint64_t)((const uint8_t*)(x))[0] << 56) |       \
     ((uint64_t)((const uint8_t*)(x))[1] << 48) |       \
     ((uint64_t)((const uint8_t*)(x))[2] << 40) |       \
     ((uint64_t)((const uint8_t*)(x))[3] << 32) |       \
     ((uint64_t)((const uint8_t*)(x))[4] << 24) |       \
     ((uint64_t)((const uint8_t*)(x))[5] << 16) |       \
     ((uint64_t)((const uint8_t*)(x))[6] <<  8) |       \
      (uint64_t)((const uint8_t*)(x))[7])
#endif

#ifndef AV_WB32
#   define AV_WB32(p, d) do {                   \
        ((uint8_t*)(p))[3] = (d);               \
        ((uint8_t*)(p))[2] = (d)>>8;            \
        ((uint8_t*)(p))[1] = (d)>>16;           \
        ((uint8_t*)(p))[0] = (d)>>24;           \
    } while(0)
#endif
#ifndef AV_WB24
#   define AV_WB24(p, d) do {                   \
        ((uint8_t*)(p))[2] = (d);               \
        ((uint8_t*)(p))[1] = (d)>>8;            \
        ((uint8_t*)(p))[0] = (d)>>16;           \
    } while(0)
#endif
#ifndef AV_WB64
#   define AV_WB64(p, d) do {                   \
        ((uint8_t*)(p))[7] = (d);               \
        ((uint8_t*)(p))[6] = (d)>>8;            \
        ((uint8_t*)(p))[5] = (d)>>16;           \
        ((uint8_t*)(p))[4] = (d)>>24;           \
        ((uint8_t*)(p))[3] = (d)>>32;           \
        ((uint8_t*)(p))[2] = (d)>>40;           \
        ((uint8_t*)(p))[1] = (d)>>48;           \
        ((uint8_t*)(p))[0] = (d)>>56;           \
    } while(0)
#endif


#ifndef NEG_USR32
#   define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
#endif
#ifndef NEG_SSR32
#   define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
#endif

#define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))
#define MKBETAG(a,b,c,d) ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))

#define AVERROR_EOF                (-MKTAG( 'E','O','F',' ')) ///< End of file
#define AVERROR_INVALIDDATA        (-MKTAG( 'I','N','D','A')) ///< Invalid data found when processing input

int64_t avio_tell(AVIOContext *s);
int avio_read(AVIOContext *s, unsigned char *buf, int size);
void avio_flush(AVIOContext *s);

int          avio_r8  (AVIOContext *s);
unsigned int avio_rl16(AVIOContext *s);
unsigned int avio_rl24(AVIOContext *s);
unsigned int avio_rl32(AVIOContext *s);
uint64_t     avio_rl64(AVIOContext *s);
unsigned int avio_rb16(AVIOContext *s);
unsigned int avio_rb24(AVIOContext *s);
unsigned int avio_rb32(AVIOContext *s);
uint64_t     avio_rb64(AVIOContext *s);

void avio_w8(AVIOContext *s, int b);
void avio_write(AVIOContext *s, const unsigned char *buf, int size);
void avio_wl64(AVIOContext *s, uint64_t val);
void avio_wb64(AVIOContext *s, uint64_t val);
void avio_wl32(AVIOContext *s, unsigned int val);
void avio_wb32(AVIOContext *s, unsigned int val);
void avio_wl24(AVIOContext *s, unsigned int val);
void avio_wb24(AVIOContext *s, unsigned int val);
void avio_wl16(AVIOContext *s, unsigned int val);
void avio_wb16(AVIOContext *s, unsigned int val);

#define AV_PKT_FLAG_KEY     0x0001 ///< The packet contains a keyframe
#define AV_PKT_FLAG_CORRUPT 0x0002 ///< The packet content is corrupted

#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< Place global headers in extradata instead of every keyframe.

#endif /* FFCODEC_FFMISC_H */