early-access version 1432

externals/ffmpeg/libavcodec/vc2enc_dwt.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2016 Open Broadcast Systems Ltd.
+ * Author        2016 Rostislav Pehlivanov <atomnuker@gmail.com>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VC2ENC_DWT_H
+#define AVCODEC_VC2ENC_DWT_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef int32_t dwtcoef;
+
+enum VC2TransformType {
+    VC2_TRANSFORM_9_7    = 0,   /* Deslauriers-Dubuc (9,7)  */
+    VC2_TRANSFORM_5_3    = 1,   /* LeGall (5,3)             */
+    VC2_TRANSFORM_13_7   = 2,   /* Deslauriers-Dubuc (13,7) */
+    VC2_TRANSFORM_HAAR   = 3,   /* Haar without shift       */
+    VC2_TRANSFORM_HAAR_S = 4,   /* Haar with 1 shift/lvl    */
+    VC2_TRANSFORM_FIDEL  = 5,   /* Fidelity filter          */
+    VC2_TRANSFORM_9_7_I  = 6,   /* Daubechies (9,7)         */
+
+    VC2_TRANSFORMS_NB
+};
+
+typedef struct VC2TransformContext {
+    dwtcoef *buffer;
+    int padding;
+    void (*vc2_subband_dwt[VC2_TRANSFORMS_NB])(struct VC2TransformContext *t,
+                                               dwtcoef *data, ptrdiff_t stride,
+                                               int width, int height);
+} VC2TransformContext;
+
+int  ff_vc2enc_init_transforms(VC2TransformContext *t, int p_stride, int p_height,
+                               int slice_w, int slice_h);
+void ff_vc2enc_free_transforms(VC2TransformContext *t);
+
+#endif /* AVCODEC_VC2ENC_DWT_H */