1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
|
/*
* Copyright 1993 Network Computing Devices, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name Network Computing Devices, Inc. not be
* used in advertising or publicity pertaining to distribution of this
* software without specific, written prior permission.
*
* THIS SOFTWARE IS PROVIDED `AS-IS'. NETWORK COMPUTING DEVICES, INC.,
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
* LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
* COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
* SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
* OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
* WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $NCDId: @(#)auevents.c,v 1.9 1994/04/21 21:50:59 greg Exp $
*/
#include <stdlib.h>
#include "misc.h"
#include "dixstruct.h"
#ifdef sgi
# define _BSD_SIGNALS
#endif
#ifdef __NetBSD__
# include <sys/types.h>
#endif
#include <sys/signal.h>
#include <audio/audio.h>
#include <audio/Aproto.h>
#include "au.h"
extern void WriteEventsToClient(), AuProcessClockedFlows();
typedef struct _EventQueueRec {
auEvent event;
AuBool processClockedFlows;
FlowPtr flow;
ClientPtr client;
struct _EventQueueRec *prev, *next;
} EventQueueRec, *EventQueuePtr;
EventQueuePtr AuEventQueue;
static EventQueuePtr AuEventQueueTail;
#define AddToEventQueue(e) \
{ \
if (AuEventQueueTail) \
{ \
AuEventQueueTail->next = (e); \
(e)->prev = AuEventQueueTail; \
} \
else \
{ \
(e)->prev = NULL; \
AuEventQueue = (e); \
} \
\
(e)->next = NULL; \
AuEventQueueTail = (e); \
}
static void
WriteAuEventsToClient(ClientPtr pClient, int count, auEvent * events)
{
/* pebl: check whether client is still there */
if (pClient->clientGone == FALSE)
WriteEventsToClient(pClient, count, events);
}
static void
fillInEvent(int kind, int reason, FlowElementPtr el, auEvent * ev)
{
AuUint32 numBytes = 0;
ComponentPtr c = el->component;
switch (el->raw->type) {
case AuElementTypeImportClient:
numBytes = c->dataSize - c->currentSize - c->incoming;
if (el->state != AuStateStop)
c->incoming += numBytes;
break;
case AuElementTypeImportDevice:
break;
case AuElementTypeImportBucket:
break;
case AuElementTypeImportWaveForm:
break;
case AuElementTypeExportClient:
numBytes = c->currentSize - c->outgoing;
c->outgoing += numBytes;
break;
case AuElementTypeExportDevice:
break;
case AuElementTypeExportBucket:
break;
}
UpdateCurrentTimeIf();
ev->u.u.type = AuEventTypeElementNotify;
ev->u.u.time = currentTime.milliseconds;
ev->u.elementNotify.flow = el->flow->flowId;
ev->u.elementNotify.element_num = el->elementNum;
ev->u.elementNotify.kind = kind;
ev->u.elementNotify.reason = reason;
ev->u.elementNotify.prev_state = el->prevState;
ev->u.elementNotify.cur_state = el->state;
ev->u.elementNotify.num_bytes = numBytes;
}
void
ProcessAudioEvents(void)
{
AuBlock l;
EventQueuePtr p, next;
l = AuBlockAudio();
p = AuEventQueue;
AuUnBlockAudio(l);
while (p) {
if (p->processClockedFlows)
AuProcessClockedFlows();
else {
p->event.u.u.sequenceNumber = p->client->sequence;
WriteAuEventsToClient(p->client, 1, &p->event);
}
l = AuBlockAudio();
RemoveFromLinkedList(AuEventQueue, p);
if (!AuEventQueue)
AuEventQueueTail = NULL;
next = p->next;
AuUnBlockAudio(l);
AuProtectedFree(p);
p = next;
}
}
void
AuRequestElementNotifyEvent(int kind, int reason, FlowElementPtr el)
{
EventQueuePtr p;
if (!(p = (EventQueuePtr) AuProtectedMalloc(sizeof(EventQueueRec))))
return;
if (kind == AuElementNotifyKindSpecial)
p->processClockedFlows = AuTrue;
else {
p->processClockedFlows = AuFalse;
p->client = (ClientPtr) (el->client);
p->flow = el->flow;
fillInEvent(kind, reason, el, &p->event);
}
AddToEventQueue(p);
AuCallbackIf(AuEventPostedCB, ());
WAKEUP_SERVER();
}
#define MONITOR_EVENT_DATA_SPACE 12
void
AuRequestMonitorNotifyEvent(FlowElementPtr el, AuUint8 * data)
{
EventQueuePtr p;
auEvent *ev;
AuUint32 count, numBytes;
ComponentPtr c = el->component;
numBytes = c->bytesPerSample * 2;
count = (numBytes + (MONITOR_EVENT_DATA_SPACE - 1)) /
MONITOR_EVENT_DATA_SPACE;
while (count--) {
if (!
(p = (EventQueuePtr) AuProtectedMalloc(sizeof(EventQueueRec))))
return;
p->processClockedFlows = AuFalse;
p->client = (ClientPtr) (el->client);
p->flow = el->flow;
ev = &p->event;
UpdateCurrentTimeIf();
ev->u.u.type = AuEventTypeMonitorNotify;
ev->u.u.time = currentTime.milliseconds;
ev->u.monitorNotify.flow = el->flow->flowId;
ev->u.monitorNotify.element_num = el->elementNum;
ev->u.monitorNotify.format = c->format;
ev->u.monitorNotify.num_tracks = c->numTracks;
ev->u.monitorNotify.count = count;
ev->u.monitorNotify.num_fields = 2;
bcopy(data, (char *) &ev->u.monitorNotify.data,
MONITOR_EVENT_DATA_SPACE);
data += MONITOR_EVENT_DATA_SPACE;
AddToEventQueue(p);
};
AuCallbackIf(AuEventPostedCB, ());
WAKEUP_SERVER();
}
void
AuDequeueEvents(FlowPtr flow)
{
AuBlock l;
EventQueuePtr p, next;
l = AuBlockAudio();
p = AuEventQueue;
AuUnBlockAudio(l);
while (p) {
l = AuBlockAudio();
next = p->next;
AuUnBlockAudio(l);
if (p->flow == flow) {
l = AuBlockAudio();
RemoveFromLinkedList(AuEventQueue, p);
if (!AuEventQueue)
AuEventQueueTail = NULL;
AuUnBlockAudio(l);
AuProtectedFree(p);
}
p = next;
}
}
|