[client] added initial decoder framework

client/lg-decoder.h

@@ -0,0 +1,52 @@
+/*
+Looking Glass - KVM FrameRelay (KVMFR) Client
+Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
+https://looking-glass.hostfission.com
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "lg-renderer.h"
+
+typedef enum LG_OutFormat
+{
+  LG_OUTPUT_BGRA
+}
+LG_OutFormat;
+
+typedef bool         (* LG_DecoderCreate       )(void ** opaque);
+typedef void         (* LG_DecoderDestroy      )(void  * opaque);
+typedef bool         (* LG_DecoderInitialize   )(void  * opaque, const LG_RendererFormat format);
+typedef void         (* LG_DecoderDeInitialize )(void  * opaque);
+typedef LG_OutFormat (* LG_DecoderGetOutFormat )(void  * opaque);
+typedef unsigned int (* LG_DecoderGetFramePitch)(void  * opaque);
+typedef bool         (* LG_DecoderDecode       )(void  * opaque, uint8_t * dst, size_t dstSize, const uint8_t * src, size_t srcSize);
+
+typedef struct LG_Decoder
+{
+  const char *            name;
+  LG_DecoderCreate        create;
+  LG_DecoderDestroy       destroy;
+  LG_DecoderInitialize    initialize;
+  LG_DecoderDeInitialize  deinitialize;
+  LG_DecoderGetOutFormat  get_out_format;
+  LG_DecoderGetFramePitch get_frame_pitch;
+  LG_DecoderDecode        decode;
+}
+LG_Decoder;