Split RoQ decoder to accommodate future encoder patch

patch by Vitor vitor1001 gmail moc
original thread: [FFmpeg-devel] [PATCH] RoQ video encoder, take 2
date: 05/27/2007 12:21 PM

Originally committed as revision 9149 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 69 insertions, 0 deletions

diff --git a/libavcodec/roqvideo.h b/libavcodec/roqvideo.h
new file mode 100644
index 0000000000..72b3e1de33
--- /dev/null
+++ b/libavcodec/roqvideo.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2003 the ffmpeg project
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+
+typedef struct {
+  unsigned char y[4];
+  unsigned char u, v;
+} roq_cell;
+
+typedef struct {
+  int idx[4];
+} roq_qcell;
+
+typedef struct RoqContext {
+
+    AVCodecContext *avctx;
+    DSPContext dsp;
+    AVFrame frames[2];
+    AVFrame *last_frame;
+    AVFrame *current_frame;
+    int first_frame;
+    int y_stride;
+    int c_stride;
+
+    roq_cell cells[256];
+    roq_qcell qcells[256];
+
+    unsigned char *buf;
+    int size;
+
+} RoqContext;
+
+#define RoQ_INFO              0x1001
+#define RoQ_QUAD_CODEBOOK     0x1002
+#define RoQ_QUAD_VQ           0x1011
+#define RoQ_SOUND_MONO        0x1020
+#define RoQ_SOUND_STEREO      0x1021
+
+#define RoQ_ID_MOT              0x00
+#define RoQ_ID_FCC              0x01
+#define RoQ_ID_SLD              0x02
+#define RoQ_ID_CCC              0x03
+
+void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell);
+void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell);
+
+void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay);
+
+void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay);