PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2 of the License,
+ by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
#include <config.h>
#endif
-#include <sys/time.h>
-#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
pa_bool_t in_prebuf;
pa_memchunk silence;
pa_mcalign *mcalign;
- int64_t missing;
- size_t requested;
+ int64_t missing, requested;
};
pa_memblockq* pa_memblockq_new(
pa_log_debug("memblockq requested: maxlength=%lu, tlength=%lu, base=%lu, prebuf=%lu, minreq=%lu maxrewind=%lu",
(unsigned long) maxlength, (unsigned long) tlength, (unsigned long) base, (unsigned long) prebuf, (unsigned long) minreq, (unsigned long) maxrewind);
- bq->missing = 0;
- bq->requested = bq->maxlength = bq->tlength = bq->prebuf = bq->minreq = bq->maxrewind = 0;
+ bq->missing = bq->requested = 0;
+ bq->maxlength = bq->tlength = bq->prebuf = bq->minreq = bq->maxrewind = 0;
bq->in_prebuf = TRUE;
pa_memblockq_set_maxlength(bq, maxlength);
pa_memblockq_set_tlength(bq, tlength);
- pa_memblockq_set_prebuf(bq, prebuf);
pa_memblockq_set_minreq(bq, minreq);
+ pa_memblockq_set_prebuf(bq, prebuf);
pa_memblockq_set_maxrewind(bq, maxrewind);
pa_log_debug("memblockq sanitized: maxlength=%lu, tlength=%lu, base=%lu, prebuf=%lu, minreq=%lu maxrewind=%lu",
return TRUE;
}
+static void write_index_changed(pa_memblockq *bq, int64_t old_write_index, pa_bool_t account) {
+ int64_t delta;
+
+ pa_assert(bq);
+
+ delta = bq->write_index - old_write_index;
+
+ if (account)
+ bq->requested -= delta;
+ else
+ bq->missing -= delta;
+
+ /* pa_log("pushed/seeked %lli: requested counter at %lli, account=%i", (long long) delta, (long long) bq->requested, account); */
+}
+
+static void read_index_changed(pa_memblockq *bq, int64_t old_read_index) {
+ int64_t delta;
+
+ pa_assert(bq);
+
+ delta = bq->read_index - old_read_index;
+ bq->missing += delta;
+
+ /* pa_log("popped %lli: missing counter at %lli", (long long) delta, (long long) bq->missing); */
+}
+
int pa_memblockq_push(pa_memblockq* bq, const pa_memchunk *uchunk) {
struct list_item *q, *n;
pa_memchunk chunk;
- int64_t old, delta;
+ int64_t old;
pa_assert(bq);
pa_assert(uchunk);
size_t d;
pa_assert(bq->write_index + (int64_t)chunk.length > q->index &&
- bq->write_index + (int64_t)chunk.length < q->index + (int64_t)q->chunk.length &&
- bq->write_index < q->index);
+ bq->write_index + (int64_t)chunk.length < q->index + (int64_t)q->chunk.length &&
+ bq->write_index < q->index);
/* The job overwrites the current entry at the end, so let's drop the beginning of this entry */
finish:
- delta = bq->write_index - old;
-
- if (delta >= (int64_t) bq->requested) {
- delta -= (int64_t) bq->requested;
- bq->requested = 0;
- } else {
- bq->requested -= (size_t) delta;
- delta = 0;
- }
-
- bq->missing -= delta;
-
+ write_index_changed(bq, old, TRUE);
return 0;
}
/* Do we need to spit out silence? */
if (!bq->current_read || bq->current_read->index > bq->read_index) {
-
size_t length;
/* How much silence shall we return? */
return 0;
}
+int pa_memblockq_peek_fixed_size(pa_memblockq *bq, size_t block_size, pa_memchunk *chunk) {
+ pa_memchunk tchunk, rchunk;
+ int64_t ri;
+ struct list_item *item;
+
+ pa_assert(bq);
+ pa_assert(block_size > 0);
+ pa_assert(chunk);
+ pa_assert(bq->silence.memblock);
+
+ if (pa_memblockq_peek(bq, &tchunk) < 0)
+ return -1;
+
+ if (tchunk.length >= block_size) {
+ *chunk = tchunk;
+ chunk->length = block_size;
+ return 0;
+ }
+
+ rchunk.memblock = pa_memblock_new(pa_memblock_get_pool(tchunk.memblock), block_size);
+ rchunk.index = 0;
+ rchunk.length = tchunk.length;
+
+ pa_memchunk_memcpy(&rchunk, &tchunk);
+ pa_memblock_unref(tchunk.memblock);
+
+ rchunk.index += tchunk.length;
+
+ /* We don't need to call fix_current_read() here, since
+ * pa_memblock_peek() already did that */
+ item = bq->current_read;
+ ri = bq->read_index + tchunk.length;
+
+ while (rchunk.index < block_size) {
+
+ if (!item || item->index > ri) {
+ /* Do we need to append silence? */
+ tchunk = bq->silence;
+
+ if (item)
+ tchunk.length = PA_MIN(tchunk.length, (size_t) (item->index - ri));
+
+ } else {
+ int64_t d;
+
+ /* We can append real data! */
+ tchunk = item->chunk;
+
+ d = ri - item->index;
+ tchunk.index += (size_t) d;
+ tchunk.length -= (size_t) d;
+
+ /* Go to next item for the next iteration */
+ item = item->next;
+ }
+
+ rchunk.length = tchunk.length = PA_MIN(tchunk.length, block_size - rchunk.index);
+ pa_memchunk_memcpy(&rchunk, &tchunk);
+
+ rchunk.index += rchunk.length;
+ ri += rchunk.length;
+ }
+
+ rchunk.index = 0;
+ rchunk.length = block_size;
+
+ *chunk = rchunk;
+ return 0;
+}
+
void pa_memblockq_drop(pa_memblockq *bq, size_t length) {
- int64_t old, delta;
+ int64_t old;
pa_assert(bq);
pa_assert(length % bq->base == 0);
}
drop_backlog(bq);
-
- delta = bq->read_index - old;
- bq->missing += delta;
+ read_index_changed(bq, old);
}
void pa_memblockq_rewind(pa_memblockq *bq, size_t length) {
+ int64_t old;
pa_assert(bq);
pa_assert(length % bq->base == 0);
+ old = bq->read_index;
+
/* This is kind of the inverse of pa_memblockq_drop() */
bq->read_index -= (int64_t) length;
- bq->missing -= (int64_t) length;
+
+ read_index_changed(bq, old);
}
pa_bool_t pa_memblockq_is_readable(pa_memblockq *bq) {
return l >= bq->minreq ? l : 0;
}
-void pa_memblockq_seek(pa_memblockq *bq, int64_t offset, pa_seek_mode_t seek) {
- int64_t old, delta;
+void pa_memblockq_seek(pa_memblockq *bq, int64_t offset, pa_seek_mode_t seek, pa_bool_t account) {
+ int64_t old;
pa_assert(bq);
old = bq->write_index;
}
drop_backlog(bq);
-
- delta = bq->write_index - old;
-
- if (delta >= (int64_t) bq->requested) {
- delta -= (int64_t) bq->requested;
- bq->requested = 0;
- } else if (delta >= 0) {
- bq->requested -= (size_t) delta;
- delta = 0;
- }
-
- bq->missing -= delta;
+ write_index_changed(bq, old, account);
}
-void pa_memblockq_flush_write(pa_memblockq *bq) {
- int64_t old, delta;
+void pa_memblockq_flush_write(pa_memblockq *bq, pa_bool_t account) {
+ int64_t old;
pa_assert(bq);
pa_memblockq_silence(bq);
bq->write_index = bq->read_index;
pa_memblockq_prebuf_force(bq);
-
- delta = bq->write_index - old;
-
- if (delta >= (int64_t) bq->requested) {
- delta -= (int64_t) bq->requested;
- bq->requested = 0;
- } else if (delta >= 0) {
- bq->requested -= (size_t) delta;
- delta = 0;
- }
-
- bq->missing -= delta;
+ write_index_changed(bq, old, account);
}
void pa_memblockq_flush_read(pa_memblockq *bq) {
- int64_t old, delta;
+ int64_t old;
pa_assert(bq);
pa_memblockq_silence(bq);
bq->read_index = bq->write_index;
pa_memblockq_prebuf_force(bq);
-
- delta = bq->read_index - old;
- bq->missing += delta;
+ read_index_changed(bq, old);
}
size_t pa_memblockq_get_tlength(pa_memblockq *bq) {
return bq->minreq;
}
+size_t pa_memblockq_get_maxrewind(pa_memblockq *bq) {
+ pa_assert(bq);
+
+ return bq->maxrewind;
+}
+
int64_t pa_memblockq_get_read_index(pa_memblockq *bq) {
pa_assert(bq);
return 0;
l = (size_t) bq->missing;
+
+ bq->requested += bq->missing;
bq->missing = 0;
- bq->requested += l;
+
+ /* pa_log("sent %lli: request counter is at %lli", (long long) l, (long long) bq->requested); */
return l;
}
if (bq->tlength > bq->maxlength)
pa_memblockq_set_tlength(bq, bq->maxlength);
-
- if (bq->prebuf > bq->maxlength)
- pa_memblockq_set_prebuf(bq, bq->maxlength);
}
void pa_memblockq_set_tlength(pa_memblockq *bq, size_t tlength) {
size_t old_tlength;
pa_assert(bq);
- if (tlength <= 0)
+ if (tlength <= 0 || tlength == (size_t) -1)
tlength = bq->maxlength;
old_tlength = bq->tlength;
if (bq->tlength > bq->maxlength)
bq->tlength = bq->maxlength;
- if (bq->prebuf > bq->tlength)
- pa_memblockq_set_prebuf(bq, bq->tlength);
-
if (bq->minreq > bq->tlength)
pa_memblockq_set_minreq(bq, bq->tlength);
+ if (bq->prebuf > bq->tlength+bq->base-bq->minreq)
+ pa_memblockq_set_prebuf(bq, bq->tlength+bq->base-bq->minreq);
+
bq->missing += (int64_t) bq->tlength - (int64_t) old_tlength;
}
+void pa_memblockq_set_minreq(pa_memblockq *bq, size_t minreq) {
+ pa_assert(bq);
+
+ bq->minreq = (minreq/bq->base)*bq->base;
+
+ if (bq->minreq > bq->tlength)
+ bq->minreq = bq->tlength;
+
+ if (bq->minreq < bq->base)
+ bq->minreq = bq->base;
+
+ if (bq->prebuf > bq->tlength+bq->base-bq->minreq)
+ pa_memblockq_set_prebuf(bq, bq->tlength+bq->base-bq->minreq);
+}
+
void pa_memblockq_set_prebuf(pa_memblockq *bq, size_t prebuf) {
pa_assert(bq);
if (prebuf == (size_t) -1)
- prebuf = bq->tlength;
+ prebuf = bq->tlength+bq->base-bq->minreq;
bq->prebuf = ((prebuf+bq->base-1)/bq->base)*bq->base;
if (prebuf > 0 && bq->prebuf < bq->base)
bq->prebuf = bq->base;
- if (bq->prebuf > bq->tlength)
- bq->prebuf = bq->tlength;
+ if (bq->prebuf > bq->tlength+bq->base-bq->minreq)
+ bq->prebuf = bq->tlength+bq->base-bq->minreq;
if (bq->prebuf <= 0 || pa_memblockq_get_length(bq) >= bq->prebuf)
bq->in_prebuf = FALSE;
-
- if (bq->minreq > bq->prebuf)
- pa_memblockq_set_minreq(bq, bq->prebuf);
}
-void pa_memblockq_set_minreq(pa_memblockq *bq, size_t minreq) {
+void pa_memblockq_set_maxrewind(pa_memblockq *bq, size_t maxrewind) {
pa_assert(bq);
- bq->minreq = (minreq/bq->base)*bq->base;
-
- if (bq->minreq > bq->tlength)
- bq->minreq = bq->tlength;
+ bq->maxrewind = (maxrewind/bq->base)*bq->base;
+}
- if (bq->minreq > bq->prebuf)
- bq->minreq = bq->prebuf;
+void pa_memblockq_apply_attr(pa_memblockq *bq, const pa_buffer_attr *a) {
+ pa_assert(bq);
+ pa_assert(a);
- if (bq->minreq < bq->base)
- bq->minreq = bq->base;
+ pa_memblockq_set_maxlength(bq, a->maxlength);
+ pa_memblockq_set_tlength(bq, a->tlength);
+ pa_memblockq_set_prebuf(bq, a->prebuf);
+ pa_memblockq_set_minreq(bq, a->minreq);
}
-void pa_memblockq_set_maxrewind(pa_memblockq *bq, size_t maxrewind) {
+void pa_memblockq_get_attr(pa_memblockq *bq, pa_buffer_attr *a) {
pa_assert(bq);
+ pa_assert(a);
- bq->maxrewind = (maxrewind/bq->base)*bq->base;
+ a->maxlength = (uint32_t) pa_memblockq_get_maxlength(bq);
+ a->tlength = (uint32_t) pa_memblockq_get_tlength(bq);
+ a->prebuf = (uint32_t) pa_memblockq_get_prebuf(bq);
+ a->minreq = (uint32_t) pa_memblockq_get_minreq(bq);
}
int pa_memblockq_splice(pa_memblockq *bq, pa_memblockq *source) {
pa_memblock_unref(chunk.memblock);
} else
- pa_memblockq_seek(bq, (int64_t) chunk.length, PA_SEEK_RELATIVE);
+ pa_memblockq_seek(bq, (int64_t) chunk.length, PA_SEEK_RELATIVE, TRUE);
pa_memblockq_drop(bq, chunk.length);
}