#ifndef SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
  #define SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
  
  #include <linux/dma-mapping.h>
  #include <linux/firewire.h>
  
  /**
   * struct iso_packets_buffer - manages a buffer for many packets
   * @iso_buffer: the memory containing the packets
   * @packets: an array, with each element pointing to one packet
   */
  struct iso_packets_buffer {
  	struct fw_iso_buffer iso_buffer;
  	struct {
  		void *buffer;
  		unsigned int offset;
  	} *packets;
  };
  
  int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit,
  			    unsigned int count, unsigned int packet_size,
  			    enum dma_data_direction direction);
  void iso_packets_buffer_destroy(struct iso_packets_buffer *b,
  				struct fw_unit *unit);
  
  #endif