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util: pull Buffer code out of VNC module

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The Buffer code in the VNC server is useful for the IO channel
code, so pull it out into a shared module, QIOBuffer.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-03-03 17:13:42 +00:00
parent 10817bf09d
commit 88c5f205fa
6 changed files with 191 additions and 58 deletions
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43
ui/vnc.c
View file

@ -647,49 +647,6 @@ void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
vnc_write_s32(vs, encoding);
}
void buffer_reserve(Buffer *buffer, size_t len)
{
if ((buffer->capacity - buffer->offset) < len) {
buffer->capacity += (len + 1024);
buffer->buffer = g_realloc(buffer->buffer, buffer->capacity);
}
}
static int buffer_empty(Buffer *buffer)
{
return buffer->offset == 0;
}
uint8_t *buffer_end(Buffer *buffer)
{
return buffer->buffer + buffer->offset;
}
void buffer_reset(Buffer *buffer)
{
buffer->offset = 0;
}
void buffer_free(Buffer *buffer)
{
g_free(buffer->buffer);
buffer->offset = 0;
buffer->capacity = 0;
buffer->buffer = NULL;
}
void buffer_append(Buffer *buffer, const void *data, size_t len)
{
memcpy(buffer->buffer + buffer->offset, data, len);
buffer->offset += len;
}
void buffer_advance(Buffer *buf, size_t len)
{
memmove(buf->buffer, buf->buffer + len,
(buf->offset - len));
buf->offset -= len;
}
static void vnc_desktop_resize(VncState *vs)
{