text: /*
   * 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_BSF_INTERNAL_H
  #define AVCODEC_BSF_INTERNAL_H
  
  #include "libavutil/log.h"
  
  #include "bsf.h"
  #include "packet.h"
  
  /**
   * Called by the bitstream filters to get the next packet for filtering.
   * The filter is responsible for either freeing the packet or passing it to the
   * caller.
   */
  int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt);
  
  /**
   * Called by bitstream filters to get packet for filtering.
   * The reference to packet is moved to provided packet structure.
   *
   * @param ctx pointer to AVBSFContext of filter
   * @param pkt pointer to packet to move reference to
   *
   * @return 0 on success, negative AVERROR in case of failure
   */
  int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt);
  
  #if FF_API_CHILD_CLASS_NEXT
  const AVClass *ff_bsf_child_class_next(const AVClass *prev);
  #endif
  
  const AVClass *ff_bsf_child_class_iterate(void **opaque);
  
  #endif /* AVCODEC_BSF_INTERNAL_H */
  