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broadway: Use gdk_texture_save_to_png_bytes()

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Instead of using Cairo, save the texture directly.
This commit is contained in:
Benjamin Otte 2021-09-26 00:32:27 +02:00
parent dcba783389
commit 5b47391162
1 changed files with 20 additions and 37 deletions
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57
gdk/broadway/gdkbroadway-server.c
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@ -609,56 +609,39 @@ open_shared_memory (void)
return ret;
}
typedef struct {
int fd;
gsize size;
} PngData;
static cairo_status_t
write_png_cb (void *closure,
const guchar *data,
unsigned int length)
{
PngData *png_data = closure;
int fd = png_data->fd;
while (length)
{
gssize ret = write (fd, data, length);
if (ret <= 0)
return CAIRO_STATUS_WRITE_ERROR;
png_data->size += ret;
length -= ret;
data += ret;
}
return CAIRO_STATUS_SUCCESS;
}
guint32
gdk_broadway_server_upload_texture (GdkBroadwayServer *server,
GdkTexture *texture)
{
guint32 id;
cairo_surface_t *surface = gdk_texture_download_surface (texture);
BroadwayRequestUploadTexture msg;
PngData data;
GBytes *bytes;
const guchar *data;
gsize size;
int fd;
id = server->next_texture_id++;
data.fd = open_shared_memory ();
data.size = 0;
cairo_surface_write_to_png_stream (surface, write_png_cb, &data);
bytes = gdk_texture_save_to_png_bytes (texture);
fd = open_shared_memory ();
data = g_bytes_get_data (bytes, &size);
msg.id = id;
msg.offset = 0;
msg.size = data.size;
while (size)
{
gssize ret = write (fd, data, size);
if (ret <= 0)
break;
size -= ret;
data += ret;
}
g_bytes_unref (bytes);
/* This passes ownership of fd */
gdk_broadway_server_send_fd_message (server, msg,
BROADWAY_REQUEST_UPLOAD_TEXTURE, data.fd);
BROADWAY_REQUEST_UPLOAD_TEXTURE, fd);
return id;
}