root/trunk/libffado/config.h.in

Revision 930, 5.5 kB (checked in by ppalmers, 13 years ago)

Fix latency/reliability issue.
Preliminary tests indicate that this runs fine with
jackd -R -P60 -d firewire -v4 -p64 -n3
which corresponds to 331 frames of roundtrip latency on the quatafire.

For reference:
jackd -R -P60 -d freebob -p64 -n2
results in 355 frames for the same device

Line 
1 /* config.h.in. */
2 #ifndef CONFIG_H
3 #define CONFIG_H
4
5 /* Name of package */
6 #define PACKAGE $PACKAGE
7
8 /* Define to the address where bug reports for this package should be sent. */
9 #define PACKAGE_BUGREPORT "<ffado-devel@lists.sf.net>"
10
11 /* Define to the full name of this package. */
12 #define PACKAGE_NAME "$PACKAGE"
13
14 /* Define to the full name and version of this package. */
15 #define PACKAGE_STRING "$PACKAGE $VERSION-$REVISION"
16
17 /* Define to the one symbol short name of this package. */
18 #define PACKAGE_TARNAME "$PACKAGE"
19
20 /* Define to the version of this package. */
21 #define PACKAGE_VERSION "$VERSION-$REVISION"
22
23 /* Define to the version of the cace. */
24 #define CACHE_VERSION "$VERSION-$REVISION"
25
26 /* Define to the api version */
27 #define FFADO_API_VERSION $FFADO_API_VERSION
28
29 #define CACHEDIR "~/.ffado"
30
31 #define BINDIR "$BINDIR"
32 #define LIBDIR "$LIBDIR"
33 #define SHAREDIR "$SHAREDIR"
34
35 #define DEBUG_IMPLEMENT_BACKLOG     0
36
37 // make this zero to disable the most extreme
38 // debug logging in the critical sections
39 #define DEBUG_EXTREME_ENABLE        0
40
41 #define IEEE1394SERVICE_USE_CYCLETIMER_DLL  1
42 #define IEEE1394SERVICE_CYCLETIMER_DLL_UPDATE_INTERVAL_USEC 200000
43 #define IEEE1394SERVICE_MAX_FIREWIRE_PORTS  16
44
45 #define IEEE1394SERVICE_CYCLETIMER_HELPER_RUN_REALTIME    1
46 #define IEEE1394SERVICE_CYCLETIMER_HELPER_PRIO_INCREASE  -10
47
48 #define THREAD_MAX_RTPRIO                   98
49 #define THREAD_MIN_RTPRIO                   1
50
51 #define MINIMUM_INTERRUPTS_PER_PERIOD       4U
52
53 // These are the result of a lot of trial and error
54 // due to weirdness in the kernel layer
55 #define MAX_XMIT_PACKET_SIZE                (2048-16)
56 #define MAX_XMIT_NB_BUFFERS                 40
57
58 #define ISOHANDLER_FLUSH_BEFORE_ITERATE     0
59
60 #define ISOHANDLER_DEATH_DETECT_TIMEOUT_USECS    1000000LL
61
62 #define ISOHANDLERMANAGER_MAX_ISO_HANDLERS_PER_PORT         16
63 #define ISOHANDLERMANAGER_MAX_STREAMS_PER_ISOTHREAD         16
64 // the transmit thread should run at elevated priority since it
65 // should push packets into the kernel ASAP
66 #define ISOHANDLERMANAGER_TRANSMIT_PRIO_INCREASE            1
67 // the receive thread should have lower priority than the transmit one, since
68 // it should be interrupted once it has flagged the semaphore that indicates
69 // one period of frames.
70 #define ISOHANDLERMANAGER_RECEIVE_PRIO_INCREASE             -6
71
72 // allows to add some processing margin. This shifts the time
73 // at which the buffer is transfer()'ed, making things somewhat
74 // more robust. It should be noted though that shifting the transfer
75 // time to a later time instant also causes the xmit buffer fill to be
76 // lower on average.
77 #define STREAMPROCESSORMANAGER_SIGNAL_DELAY_TICKS           (3072*6)
78
79 #define STREAMPROCESSORMANAGER_CYCLES_FOR_DRYRUN            40000
80 #define STREAMPROCESSORMANAGER_CYCLES_FOR_STARTUP           200
81 #define STREAMPROCESSORMANAGER_PRESTART_CYCLES_FOR_XMIT     20
82 #define STREAMPROCESSORMANAGER_PRESTART_CYCLES_FOR_RECV     0
83 #define STREAMPROCESSORMANAGER_SYNCSTART_TRIES              10
84 #define STREAMPROCESSORMANAGER_SYNC_WAIT_TIME_MSEC          200
85 #define STREAMPROCESSORMANAGER_ALIGN_AVERAGE_TIME_MSEC      200
86 #define STREAMPROCESSORMANAGER_NB_ALIGN_TRIES               40
87
88 #define STREAMPROCESSORMANAGER_DYNAMIC_SYNC_DELAY           0
89
90 // FIXME: note that it will probably be better to use a DLL bandwidth that is
91 //        dependant on the sample rate
92 #define TIMESTAMPEDBUFFER_DLL_BANDWIDTH                     (0.01)
93
94 // -- AMDTP options -- //
95
96 // in ticks
97 // as per AMDTP2.1:
98 // 354.17us + 125us @ 24.576ticks/usec = 11776.08192 ticks
99 #define AMDTP_TRANSMIT_TRANSFER_DELAY   (11776U)
100
101 // the absolute minimum number of cycles we want to transmit
102 // a packet ahead of the presentation time. The nominal time
103 // the packet is transmitted ahead of the presentation time is
104 // given by AMDTP_TRANSMIT_TRANSFER_DELAY (in ticks), but in case we
105 // are too late for that, this constant defines how late we can
106 // be.
107 #define AMDTP_MIN_CYCLES_BEFORE_PRESENTATION                1
108
109 // the absolute maximum number of cycles we want to transmit
110 // a packet ahead of the ideal transmit time. The nominal time
111 // the packet is transmitted ahead of the presentation time is
112 // given by AMDTP_TRANSMIT_TRANSFER_DELAY (in ticks), but we can send
113 // packets early if we want to. (not completely according to spec)
114 // (for spec compliance you need to specify a value of 1 or 2)
115 #define AMDTP_MAX_CYCLES_TO_TRANSMIT_EARLY                  6
116
117 // ensure that the AMDTP SP clips all float values to [-1.0..1.0]
118 #define AMDTP_CLIP_FLOATS                                   1
119
120 // -- MOTU options -- //
121
122 // the transfer delay is substracted from the ideal presentation
123 // time to obtain a corrected presentation time. This values is
124 // then used to stamp the packet and determine the transmission
125 // time instant.
126 #define MOTU_TRANSMIT_TRANSFER_DELAY    (11776U)
127
128 // the absolute minimum number of cycles we want to transmit
129 // a packet ahead of the presentation time. The nominal time
130 // the packet is transmitted ahead of the presentation time is
131 // given by MOTU_TRANSMIT_TRANSFER_DELAY (in ticks), but in case we
132 // are too late for that, this constant defines how late we can
133 // be.
134 #define MOTU_MIN_CYCLES_BEFORE_PRESENTATION                1
135
136 // the absolute maximum number of cycles we want to transmit
137 // a packet ahead of the ideal transmit time. The nominal time
138 // the packet is transmitted ahead of the presentation time is
139 // given by MOTU_TRANSMIT_TRANSFER_DELAY (in ticks), but we can send
140 // packets early if we want to.
141 #define MOTU_MAX_CYCLES_TO_TRANSMIT_EARLY                  6
142
143 #endif // CONFIG_H
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