sound/firewire/packets-buffer.h

   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  */
  12 struct iso_packets_buffer {
  13         struct fw_iso_buffer iso_buffer;
  14         struct {
  15                 void *buffer;
  16                 unsigned int offset;
  17         } *packets;
  18 };
  19
  20 int 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);
  23 void iso_packets_buffer_destroy(struct iso_packets_buffer *b,
  24                                 struct fw_unit *unit);
  25
  26 #endif