/***
This file is part of PulseAudio.
-
+
+ Copyright 2004-2006 Lennart Poettering
+
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 2.1 of the
License, or (at your option) any later version.
-
+
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
#include <stdio.h>
#include <stdlib.h>
-#include <assert.h>
#include <string.h>
#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
#include "mcalign.h"
struct pa_mcalign {
size_t base;
pa_memchunk leftover, current;
- pa_memblock_stat *memblock_stat;
};
-pa_mcalign *pa_mcalign_new(size_t base, pa_memblock_stat *s) {
+pa_mcalign *pa_mcalign_new(size_t base) {
pa_mcalign *m;
- assert(base);
+ pa_assert(base);
m = pa_xnew(pa_mcalign, 1);
-
+
m->base = base;
pa_memchunk_reset(&m->leftover);
pa_memchunk_reset(&m->current);
- m->memblock_stat = s;
-
+
return m;
}
void pa_mcalign_free(pa_mcalign *m) {
- assert(m);
+ pa_assert(m);
if (m->leftover.memblock)
pa_memblock_unref(m->leftover.memblock);
if (m->current.memblock)
pa_memblock_unref(m->current.memblock);
-
+
pa_xfree(m);
}
void pa_mcalign_push(pa_mcalign *m, const pa_memchunk *c) {
- assert(m);
- assert(c);
-
- assert(c->memblock);
- assert(c->length > 0);
-
- assert(!m->current.memblock);
-
+ pa_assert(m);
+ pa_assert(c);
+
+ pa_assert(c->memblock);
+ pa_assert(c->length > 0);
+
+ pa_assert(!m->current.memblock);
+
/* Append to the leftover memory block */
if (m->leftover.memblock) {
-
+
/* Try to merge */
if (m->leftover.memblock == c->memblock &&
m->leftover.index + m->leftover.length == c->index) {
if (m->leftover.length >= m->base) {
m->current = m->leftover;
pa_memchunk_reset(&m->leftover);
- }
+ }
} else {
size_t l;
+ void *lo_data, *m_data;
/* We have to copy */
- assert(m->leftover.length < m->base);
+ pa_assert(m->leftover.length < m->base);
l = m->base - m->leftover.length;
-
+
if (l > c->length)
l = c->length;
/* Can we use the current block? */
- pa_memchunk_make_writable(&m->leftover, m->memblock_stat, m->base);
+ pa_memchunk_make_writable(&m->leftover, m->base);
- memcpy((uint8_t*) m->leftover.memblock->data + m->leftover.index + m->leftover.length, (uint8_t*) c->memblock->data + c->index, l);
+ lo_data = pa_memblock_acquire(m->leftover.memblock);
+ m_data = pa_memblock_acquire(c->memblock);
+ memcpy((uint8_t*) lo_data + m->leftover.index + m->leftover.length, (uint8_t*) m_data + c->index, l);
+ pa_memblock_release(m->leftover.memblock);
+ pa_memblock_release(c->memblock);
m->leftover.length += l;
- assert(m->leftover.length <= m->base && m->leftover.length <= m->leftover.memblock->length);
+ pa_assert(m->leftover.length <= m->base);
+ pa_assert(m->leftover.length <= pa_memblock_get_length(m->leftover.memblock));
if (c->length > l) {
/* Save the remainder of the memory block */
}
} else {
/* Nothing to merge or copy, just store it */
-
+
if (c->length >= m->base)
m->current = *c;
else
}
int pa_mcalign_pop(pa_mcalign *m, pa_memchunk *c) {
- assert(m);
- assert(c);
+ pa_assert(m);
+ pa_assert(c);
/* First test if there's a leftover memory block available */
if (m->leftover.memblock) {
- assert(m->leftover.length > 0 && m->leftover.length <= m->base);
+ pa_assert(m->leftover.length > 0);
+ pa_assert(m->leftover.length <= m->base);
/* The leftover memory block is not yet complete */
if (m->leftover.length < m->base)
m->leftover = m->current;
pa_memchunk_reset(&m->current);
}
-
+
return 0;
}
/* Now let's see if there is other data available */
if (m->current.memblock) {
size_t l;
- assert(m->current.length >= m->base);
+ pa_assert(m->current.length >= m->base);
/* The length of the returned memory block */
l = m->current.length;
l /= m->base;
l *= m->base;
- assert(l > 0);
+ pa_assert(l > 0);
/* Prepare the returned block */
*c = m->current;
c->length = l;
/* Drop that from the current memory block */
- assert(l <= m->current.length);
+ pa_assert(l <= m->current.length);
m->current.index += l;
m->current.length -= l;
pa_memblock_unref(m->current.memblock);
else {
/* Move the raimainder to leftover */
- assert(m->current.length < m->base && !m->leftover.memblock);
+ pa_assert(m->current.length < m->base && !m->leftover.memblock);
m->leftover = m->current;
}
pa_memchunk_reset(&m->current);
-
+
return 0;
}
/* There's simply nothing */
return -1;
-
+
}
size_t pa_mcalign_csize(pa_mcalign *m, size_t l) {
- assert(m);
- assert(l > 0);
+ pa_assert(m);
+ pa_assert(l > 0);
+
+ pa_assert(!m->current.memblock);
- assert(!m->current.memblock);
-
if (m->leftover.memblock)
l += m->leftover.length;
-
+
return (l/m->base)*m->base;
}