linux/sound/firewire/packets-buffer.h
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   1#ifndef SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
   2#define SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
   3
   4#include <linux/dma-mapping.h>
   5#include <linux/firewire.h>
   6
   7/**
   8 * struct iso_packets_buffer - manages a buffer for many packets
   9 * @iso_buffer: the memory containing the packets
  10 * @packets: an array, with each element pointing to one packet
  11 */
  12struct iso_packets_buffer {
  13        struct fw_iso_buffer iso_buffer;
  14        struct {
  15                void *buffer;
  16                unsigned int offset;
  17        } *packets;
  18};
  19
  20int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit,
  21                            unsigned int count, unsigned int packet_size,
  22                            enum dma_data_direction direction);
  23void iso_packets_buffer_destroy(struct iso_packets_buffer *b,
  24                                struct fw_unit *unit);
  25
  26#endif
  27
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