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pulse: resize message dynamically

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This commit is contained in:
Wim Taymans 2020-10-08 12:54:36 +02:00
parent f0102fd490
commit 138e61138f
2 changed files with 31 additions and 18 deletions
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21
src/modules/module-protocol-pulse/message.c
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@ -364,9 +364,22 @@ static int message_get(struct message *m, ...)
return 0;
}
static int ensure_size(struct message *m, uint32_t size)
{
uint32_t alloc;
if (m->length + size <= m->allocated)
return size;
alloc = SPA_ROUND_UP_N(SPA_MAX(m->allocated + size, 4096u), 4096u);
if ((m->data = realloc(m->data, alloc)) == NULL)
return -errno;
m->allocated = alloc;
return size;
}
static void write_8(struct message *m, uint8_t val)
{
if (m->length < m->allocated)
if (ensure_size(m, 1) > 0)
m->data[m->length] = val;
m->length++;
}
@ -374,7 +387,7 @@ static void write_8(struct message *m, uint8_t val)
static void write_32(struct message *m, uint32_t val)
{
val = htonl(val);
if (m->length + 4 <= m->allocated)
if (ensure_size(m, 4) > 0)
memcpy(m->data + m->length, &val, 4);
m->length += 4;
}
@ -384,7 +397,7 @@ static void write_string(struct message *m, const char *s)
write_8(m, s ? TAG_STRING : TAG_STRING_NULL);
if (s != NULL) {
int len = strlen(s) + 1;
if (m->length + len <= m->allocated)
if (ensure_size(m, len) > 0)
strcpy(&m->data[m->length], s);
m->length += len;
}
@ -420,7 +433,7 @@ static void write_arbitrary(struct message *m, const void *p, size_t length)
{
write_8(m, TAG_ARBITRARY);
write_32(m, length);
if (length > 0 && m->length + length <= m->allocated)
if (ensure_size(m, length) > 0)
memcpy(m->data + m->length, p, length);
m->length += length;
}