@@ -249,30 +249,11 @@ int snd_seq_prioq_avail(struct snd_seq_prioq * f)
return f->cells;
}
-static inline int prioq_match(struct snd_seq_event_cell *cell,
- int client, int timestamp)
-{
- if (cell->event.source.client == client ||
- cell->event.dest.client == client)
- return 1;
- if (!timestamp)
- return 0;
- switch (cell->event.flags & SNDRV_SEQ_TIME_STAMP_MASK) {
- case SNDRV_SEQ_TIME_STAMP_TICK:
- if (cell->event.time.tick)
- return 1;
- break;
- case SNDRV_SEQ_TIME_STAMP_REAL:
- if (cell->event.time.time.tv_sec ||
- cell->event.time.time.tv_nsec)
- return 1;
- break;
- }
- return 0;
-}
-
-/* remove cells for left client */
-void snd_seq_prioq_leave(struct snd_seq_prioq * f, int client, int timestamp)
+/* remove cells matching with the condition */
+static void prioq_remove_cells(struct snd_seq_prioq *f,
+ bool (*match)(struct snd_seq_event_cell *cell,
+ void *arg),
+ void *arg)
{
register struct snd_seq_event_cell *cell, *next;
unsigned long flags;
@@ -281,39 +262,29 @@ void snd_seq_prioq_leave(struct snd_seq_prioq * f, int client, int timestamp)
/* collect all removed cells */
spin_lock_irqsave(&f->lock, flags);
- cell = f->head;
- while (cell) {
+ for (cell = f->head; cell; cell = next) {
next = cell->next;
- if (prioq_match(cell, client, timestamp)) {
- /* remove cell from prioq */
- if (cell == f->head) {
- f->head = cell->next;
- } else {
- prev->next = cell->next;
- }
- if (cell == f->tail)
- f->tail = cell->next;
- f->cells--;
- /* add cell to free list */
- cell->next = NULL;
- if (freefirst == NULL) {
- freefirst = cell;
- } else {
- freeprev->next = cell;
- }
- freeprev = cell;
- } else {
-#if 0
- pr_debug("ALSA: seq: type = %i, source = %i, dest = %i, "
- "client = %i\n",
- cell->event.type,
- cell->event.source.client,
- cell->event.dest.client,
- client);
-#endif
+ if (!match(cell, arg)) {
prev = cell;
+ continue;
}
- cell = next;
+
+ /* remove cell from prioq */
+ if (cell == f->head)
+ f->head = cell->next;
+ else
+ prev->next = cell->next;
+ if (cell == f->tail)
+ f->tail = cell->next;
+ f->cells--;
+
+ /* add cell to free list */
+ cell->next = NULL;
+ if (freefirst == NULL)
+ freefirst = cell;
+ else
+ freeprev->next = cell;
+ freeprev = cell;
}
spin_unlock_irqrestore(&f->lock, flags);
@@ -325,22 +296,68 @@ void snd_seq_prioq_leave(struct snd_seq_prioq * f, int client, int timestamp)
}
}
-static int prioq_remove_match(struct snd_seq_remove_events *info,
- struct snd_seq_event *ev)
+struct prioq_match_arg {
+ int client;
+ int timestamp;
+};
+
+static inline bool prioq_match(struct snd_seq_event_cell *cell, void *arg)
{
+ struct prioq_match_arg *v = arg;
+
+ if (cell->event.source.client == v->client ||
+ cell->event.dest.client == v->client)
+ return true;
+ if (!v->timestamp)
+ return false;
+ switch (cell->event.flags & SNDRV_SEQ_TIME_STAMP_MASK) {
+ case SNDRV_SEQ_TIME_STAMP_TICK:
+ if (cell->event.time.tick)
+ return true;
+ break;
+ case SNDRV_SEQ_TIME_STAMP_REAL:
+ if (cell->event.time.time.tv_sec ||
+ cell->event.time.time.tv_nsec)
+ return true;
+ break;
+ }
+ return false;
+}
+
+/* remove cells for left client */
+void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp)
+{
+ struct prioq_match_arg arg = { client, timestamp };
+
+ return prioq_remove_cells(f, prioq_match, &arg);
+}
+
+struct prioq_remove_match_arg {
+ int client;
+ struct snd_seq_remove_events *info;
+};
+
+static bool prioq_remove_match(struct snd_seq_event_cell *cell, void *arg)
+{
+ struct prioq_remove_match_arg *v = arg;
+ struct snd_seq_event *ev = &cell->event;
+ struct snd_seq_remove_events *info = v->info;
int res;
+ if (ev->source.client != v->client)
+ return false;
+
if (info->remove_mode & SNDRV_SEQ_REMOVE_DEST) {
if (ev->dest.client != info->dest.client ||
ev->dest.port != info->dest.port)
- return 0;
+ return false;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_DEST_CHANNEL) {
if (! snd_seq_ev_is_channel_type(ev))
- return 0;
+ return false;
/* data.note.channel and data.control.channel are identical */
if (ev->data.note.channel != info->channel)
- return 0;
+ return false;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_AFTER) {
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_TICK)
@@ -348,7 +365,7 @@ static int prioq_remove_match(struct snd_seq_remove_events *info,
else
res = snd_seq_compare_real_time(&ev->time.time, &info->time.time);
if (!res)
- return 0;
+ return false;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_BEFORE) {
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_TICK)
@@ -356,81 +373,35 @@ static int prioq_remove_match(struct snd_seq_remove_events *info,
else
res = snd_seq_compare_real_time(&ev->time.time, &info->time.time);
if (res)
- return 0;
+ return false;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_EVENT_TYPE) {
if (ev->type != info->type)
- return 0;
+ return false;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_IGNORE_OFF) {
/* Do not remove off events */
switch (ev->type) {
case SNDRV_SEQ_EVENT_NOTEOFF:
/* case SNDRV_SEQ_EVENT_SAMPLE_STOP: */
- return 0;
+ return false;
default:
break;
}
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TAG_MATCH) {
if (info->tag != ev->tag)
- return 0;
+ return false;
}
- return 1;
+ return true;
}
/* remove cells matching remove criteria */
void snd_seq_prioq_remove_events(struct snd_seq_prioq * f, int client,
struct snd_seq_remove_events *info)
{
- struct snd_seq_event_cell *cell, *next;
- unsigned long flags;
- struct snd_seq_event_cell *prev = NULL;
- struct snd_seq_event_cell *freefirst = NULL, *freeprev = NULL, *freenext;
+ struct prioq_remove_match_arg arg = { client, info };
- /* collect all removed cells */
- spin_lock_irqsave(&f->lock, flags);
- cell = f->head;
-
- while (cell) {
- next = cell->next;
- if (cell->event.source.client == client &&
- prioq_remove_match(info, &cell->event)) {
-
- /* remove cell from prioq */
- if (cell == f->head) {
- f->head = cell->next;
- } else {
- prev->next = cell->next;
- }
-
- if (cell == f->tail)
- f->tail = cell->next;
- f->cells--;
-
- /* add cell to free list */
- cell->next = NULL;
- if (freefirst == NULL) {
- freefirst = cell;
- } else {
- freeprev->next = cell;
- }
-
- freeprev = cell;
- } else {
- prev = cell;
- }
- cell = next;
- }
- spin_unlock_irqrestore(&f->lock, flags);
-
- /* remove selected cells */
- while (freefirst) {
- freenext = freefirst->next;
- snd_seq_cell_free(freefirst);
- freefirst = freenext;
- }
+ return prioq_remove_cells(f, prioq_remove_match, &arg);
}
-
-
Both snd_seq_prioq_remove_events() and snd_seq_prioq_leave() have a very similar loop for removing events. Unify them with a callback for code simplification. Only the code refactoring, and no functional changes. Signed-off-by: Takashi Iwai <tiwai@suse.de> --- sound/core/seq/seq_prioq.c | 197 ++++++++++++++++--------------------- 1 file changed, 84 insertions(+), 113 deletions(-)