static int
_cg_rect_slices_for_size(int size_to_fill,
int max_span_size,
int max_waste,
c_array_t *out_spans)
{
int n_spans = 0;
cg_span_t span;
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Repeat until whole area covered */
while (size_to_fill >= span.size) {
/* Add another slice span of same size */
if (out_spans)
c_array_append_val(out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
}
/* Add one last smaller slice span */
if (size_to_fill > 0) {
span.size = size_to_fill;
if (out_spans)
c_array_append_val(out_spans, span);
n_spans++;
}
return n_spans;
}
static int
_cg_pot_slices_for_size(int size_to_fill,
int max_span_size,
int max_waste,
c_array_t *out_spans)
{
int n_spans = 0;
cg_span_t span;
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Fix invalid max_waste */
if (max_waste < 0)
max_waste = 0;
while (true) {
/* Is the whole area covered? */
if (size_to_fill > span.size) {
/* Not yet - add a span of this size */
if (out_spans)
c_array_append_val(out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
} else if (span.size - size_to_fill <= max_waste) {
/* Yes and waste is small enough */
/* Pick the next power of two up from size_to_fill. This can
sometimes be less than the span.size that would be chosen
otherwise */
span.size = _cg_util_next_p2(size_to_fill);
span.waste = span.size - size_to_fill;
if (out_spans)
c_array_append_val(out_spans, span);
return ++n_spans;
} else {
/* Yes but waste is too large */
while (span.size - size_to_fill > max_waste) {
span.size /= 2;
c_assert(span.size > 0);
}
}
}
/* Can't get here */
return 0;
}
static void
data_buffer_stream_read_idle(void *user_data)
{
rig_pb_stream_t *stream = user_data;
int i;
rut_poll_shell_remove_idle_FIXME(stream->shell, stream->buffer.read_idle);
stream->buffer.read_idle = NULL;
c_return_if_fail(stream->type == STREAM_TYPE_BUFFER);
c_return_if_fail(stream->buffer.other_end != NULL);
c_return_if_fail(stream->buffer.other_end->type == STREAM_TYPE_BUFFER);
c_return_if_fail(stream->read_callback != NULL);
for (i = 0; i < stream->buffer.incoming_write_closures->len; i++) {
rig_pb_stream_write_closure_t *closure =
c_array_index(stream->buffer.incoming_write_closures, void *, i);
stream->read_callback(stream,
(uint8_t *)closure->buf.base,
closure->buf.len,
stream->read_data);
/* Give the closure back so it can be freed */
c_array_append_val(stream->buffer.other_end->buffer.finished_write_closures,
closure);
}
c_array_set_size(stream->buffer.incoming_write_closures, 0);
drain_finished_write_closures(stream);
}
void
rig_pb_stream_disconnect(rig_pb_stream_t *stream)
{
switch (stream->type)
{
#ifdef USE_UV
case STREAM_TYPE_FD:
uv_read_stop((uv_stream_t *)&stream->fd.uv_fd_pipe);
uv_close((uv_handle_t *)&stream->fd.uv_fd_pipe,
NULL /* closed callback */);
break;
case STREAM_TYPE_TCP:
uv_read_stop((uv_stream_t *)&stream->tcp.socket);
uv_close((uv_handle_t *)&stream->tcp.socket,
NULL /* closed callback */);
break;
#endif
case STREAM_TYPE_BUFFER:
{
int i;
/* Give all incoming write closures back to the other end
* so they can be freed */
for (i = 0; i < stream->buffer.incoming_write_closures->len; i++) {
rig_pb_stream_write_closure_t *closure =
c_array_index(stream->buffer.incoming_write_closures, void *, i);
c_array_append_val(stream->buffer.other_end->buffer.finished_write_closures,
closure);
}
c_array_free(stream->buffer.incoming_write_closures,
true /* free storage */);
stream->buffer.incoming_write_closures = NULL;
drain_finished_write_closures(stream);
c_array_free(stream->buffer.finished_write_closures,
true /* free storage */);
stream->buffer.finished_write_closures = NULL;
stream->buffer.other_end->buffer.other_end = NULL;
stream->buffer.other_end = NULL;
}
if (stream->buffer.read_idle) {
rut_poll_shell_remove_idle_FIXME(stream->shell, stream->buffer.read_idle);
stream->buffer.read_idle = NULL;
}
break;
#ifdef __EMSCRIPTEN__
case STREAM_TYPE_WORKER_IPC:
stream->worker_ipc.worker = 0;
break;
case STREAM_TYPE_WEBSOCKET_CLIENT:
if (stream->websocket_client.socket != -1) {
close(stream->websocket_client.socket);
stream->websocket_client.socket = -1;
}
break;
#endif
#ifdef USE_UV
case STREAM_TYPE_WEBSOCKET_SERVER:
stream->websocket_server.ctx = NULL;
break;
#endif
case STREAM_TYPE_DISCONNECTED:
#ifdef USE_UV
if (stream->resolving)
uv_cancel((uv_req_t *)&stream->resolver);
if (stream->connecting)
uv_cancel((uv_req_t *)&stream->connection_request);
#endif
return;
}
stream->type = STREAM_TYPE_DISCONNECTED;
rut_closure_list_invoke(&stream->on_error_closures,
rig_pb_stream_callback_t,
stream);
}
void
rig_pb_stream_write(rig_pb_stream_t *stream,
rig_pb_stream_write_closure_t *closure)
{
c_return_if_fail(stream->type != STREAM_TYPE_DISCONNECTED);
switch (stream->type) {
case STREAM_TYPE_BUFFER: {
c_return_if_fail(stream->buffer.other_end != NULL);
c_return_if_fail(stream->buffer.other_end->type == STREAM_TYPE_BUFFER);
c_array_append_val(stream->buffer.other_end->buffer.incoming_write_closures, closure);
queue_data_buffer_stream_read(stream->buffer.other_end);
break;
}
#ifdef USE_UV
case STREAM_TYPE_FD:
case STREAM_TYPE_TCP: {
closure->write_req.data = closure;
uv_write(&closure->write_req,
(uv_stream_t *)&stream->fd.uv_fd_pipe,
&closure->buf,
1, /* n buffers */
uv_write_done_cb);
break;
}
case STREAM_TYPE_WEBSOCKET_SERVER: {
struct wslay_event_fragmented_msg arg;
memset(&arg, 0, sizeof(arg));
arg.opcode = WSLAY_BINARY_FRAME;
arg.source.data = closure;
arg.read_callback = fragmented_wslay_read_cb;
closure->current_offset = 0;
wslay_event_queue_fragmented_msg(stream->websocket_server.ctx, &arg);
wslay_event_send(stream->websocket_server.ctx);
break;
}
#endif
#ifdef __EMSCRIPTEN__
case STREAM_TYPE_WORKER_IPC:
if (stream->worker_ipc.in_worker)
rig_emscripten_worker_post_to_main(closure->buf.base,
closure->buf.len);
else
rig_emscripten_worker_post(stream->worker_ipc.worker,
"rig_pb_stream_worker_onmessage",
closure->buf.base,
closure->buf.len);
closure->done_callback(closure);
break;
case STREAM_TYPE_WEBSOCKET_CLIENT:
c_debug("stream: websocket send() %d bytes", closure->buf.len);
send(stream->websocket_client.socket,
closure->buf.base,
closure->buf.len,
0 /* flags */);
closure->done_callback(closure);
break;
#endif
case STREAM_TYPE_DISCONNECTED:
c_warn_if_reached();
break;
}
}
static bool
setup_spans(cg_device_t *dev,
cg_texture_2d_sliced_t *tex_2ds,
int width,
int height,
int max_waste,
cg_pixel_format_t internal_format,
cg_error_t **error)
{
int max_width;
int max_height;
int n_x_slices;
int n_y_slices;
int (*slices_for_size)(int, int, int, c_array_t *);
/* Initialize size of largest slice according to supported features */
if (cg_has_feature(dev, CG_FEATURE_ID_TEXTURE_NPOT)) {
max_width = width;
max_height = height;
slices_for_size = _cg_rect_slices_for_size;
} else {
max_width = _cg_util_next_p2(width);
max_height = _cg_util_next_p2(height);
slices_for_size = _cg_pot_slices_for_size;
}
/* Negative number means no slicing forced by the user */
if (max_waste <= -1) {
cg_span_t span;
/* Check if size supported else bail out */
if (!dev->driver_vtable->texture_2d_can_create(dev, max_width, max_height, internal_format)) {
_cg_set_error(error,
CG_TEXTURE_ERROR,
CG_TEXTURE_ERROR_SIZE,
"Sliced texture size of %d x %d not possible "
"with max waste set to -1",
width,
height);
return false;
}
n_x_slices = 1;
n_y_slices = 1;
/* Init span arrays */
tex_2ds->slice_x_spans =
c_array_sized_new(false, false, sizeof(cg_span_t), 1);
tex_2ds->slice_y_spans =
c_array_sized_new(false, false, sizeof(cg_span_t), 1);
/* Add a single span for width and height */
span.start = 0;
span.size = max_width;
span.waste = max_width - width;
c_array_append_val(tex_2ds->slice_x_spans, span);
span.size = max_height;
span.waste = max_height - height;
c_array_append_val(tex_2ds->slice_y_spans, span);
} else {
/* Decrease the size of largest slice until supported by GL */
while (!dev->driver_vtable->texture_2d_can_create(dev, max_width, max_height, internal_format)) {
/* Alternate between width and height */
if (max_width > max_height)
max_width /= 2;
else
max_height /= 2;
if (max_width == 0 || max_height == 0) {
/* Maybe it would be ok to just c_warn_if_reached() for this
* codepath */
_cg_set_error(error,
CG_TEXTURE_ERROR,
CG_TEXTURE_ERROR_SIZE,
"No suitable slice geometry found");
free_spans(tex_2ds);
return false;
}
}
/* Determine the slices required to cover the bitmap area */
n_x_slices = slices_for_size(width, max_width, max_waste, NULL);
n_y_slices = slices_for_size(height, max_height, max_waste, NULL);
/* Init span arrays with reserved size */
tex_2ds->slice_x_spans =
c_array_sized_new(false, false, sizeof(cg_span_t), n_x_slices);
tex_2ds->slice_y_spans =
c_array_sized_new(false, false, sizeof(cg_span_t), n_y_slices);
/* Fill span arrays with info */
slices_for_size(width, max_width, max_waste, tex_2ds->slice_x_spans);
slices_for_size(height, max_height, max_waste, tex_2ds->slice_y_spans);
}
return true;
}