Jack2 1.9.6

usx2y.h

00001 /*
00002     Copyright (C) 2001 Paul Davis
00003     Copyright (C) 2004 Karsten Wiese, Rui Nuno Capela
00004 
00005     This program is free software; you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation; either version 2 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with this program; if not, write to the Free Software
00017     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019     $Id: usx2y.h 855 2004-12-28 05:50:18Z joq $
00020 */
00021 
00022 #ifndef __jack_usx2y_h__
00023 #define __jack_usx2y_h__
00024 
00025 #define USX2Y_MAXPACK           50
00026 #define USX2Y_MAXBUFFERMS       100
00027 #define USX2Y_MAXSTRIDE 3
00028 
00029 #define USX2Y_SSS (((USX2Y_MAXPACK * USX2Y_MAXBUFFERMS * USX2Y_MAXSTRIDE + 4096) / 4096) * 4096)
00030 
00031 struct snd_usX2Y_hwdep_pcm_shm
00032 {
00033     char playback[USX2Y_SSS];
00034     char capture0x8[USX2Y_SSS];
00035     char capture0xA[USX2Y_SSS];
00036     volatile int playback_iso_head;
00037     int playback_iso_start;
00038     struct
00039     {
00040         int     frame,
00041         offset,
00042         length;
00043     }
00044     captured_iso[128];
00045     volatile int captured_iso_head;
00046     volatile unsigned captured_iso_frames;
00047     int capture_iso_start;
00048 };
00049 typedef struct snd_usX2Y_hwdep_pcm_shm snd_usX2Y_hwdep_pcm_shm_t;
00050 
00051 typedef struct
00052 {
00053     alsa_driver_t *driver;
00054     snd_hwdep_t *hwdep_handle;
00055     struct pollfd pfds;
00056     struct snd_usX2Y_hwdep_pcm_shm *hwdep_pcm_shm;
00057     int playback_iso_start;
00058     int playback_iso_bytes_done;
00059     int capture_iso_start;
00060     int capture_iso_bytes_done;
00061 }
00062 usx2y_t;
00063 
00064 jack_hardware_t *
00065 jack_alsa_usx2y_hw_new (alsa_driver_t *driver);
00066 
00067 #endif /* __jack_usx2y_h__*/