avcodec.h

                               AVCodecContext *avctx, const char *args,
                               uint8_t **poutbuf, int *poutbuf_size,
                               const uint8_t *buf, int buf_size, int keyframe);
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);

extern AVBitStreamFilter dump_extradata_bsf;
extern AVBitStreamFilter remove_extradata_bsf;
extern AVBitStreamFilter noise_bsf;
extern AVBitStreamFilter mp3_header_compress_bsf;
extern AVBitStreamFilter mp3_header_decompress_bsf;
extern AVBitStreamFilter mjpega_dump_header_bsf;
extern AVBitStreamFilter imx_dump_header_bsf;


/* memory */

/**
 * Reallocates the given block if it is not large enough, otherwise it
 * does nothing.
 *
 * @see av_realloc
 */
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);

/* for static data only */

/**
 * Frees all static arrays and reset their pointers to 0.
 * Call this function to release all statically allocated tables.
 */
attribute_deprecated void av_free_static(void);

/**
 * Allocation of static arrays.
 *
 * @warning Do not use for normal allocation.
 *
 * @param[in] size The amount of memory you need in bytes.
 * @return Block of memory of the requested size.
 */
attribute_deprecated void *av_mallocz_static(unsigned int size);

/**
 * Copy image 'src' to 'dst'.
 */
void av_picture_copy(AVPicture *dst, const AVPicture *src,
              int pix_fmt, int width, int height);

/**
 * Crop image top and left side
 */
int av_picture_crop(AVPicture *dst, const AVPicture *src,
             int pix_fmt, int top_band, int left_band);

/**
 * Pad image
 */
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
            int padtop, int padbottom, int padleft, int padright, int *color);

#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
attribute_deprecated void img_copy(AVPicture *dst, const AVPicture *src,
              int pix_fmt, int width, int height);

attribute_deprecated int img_crop(AVPicture *dst, const AVPicture *src,
             int pix_fmt, int top_band, int left_band);

attribute_deprecated int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
            int padtop, int padbottom, int padleft, int padright, int *color);
#endif

extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);

/* error handling */
#if EINVAL > 0
#define AVERROR(e) (-(e)) /**< returns a negative error code from a POSIX error code, to return from library functions. */
#define AVUNERROR(e) (-(e)) /**< returns a POSIX error code from a library function error return value. */
#else
/* some platforms have E* and errno already negated. */
#define AVERROR(e) (e)
#define AVUNERROR(e) (e)
#endif
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
#define AVERROR_IO          AVERROR(EIO)     /**< i/o error */
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< number syntax expected in filename */
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< operation not supported */

#ifdef __cplusplus
}
#endif

#endif /* AVCODEC_H */