lavc: add Ut Video encoder

Signed-off-by: Anton Khirnov <anton@khirnov.net>

1 files changed, 91 insertions, 0 deletions

diff --git a/libavcodec/utvideo.h b/libavcodec/utvideo.h
new file mode 100644
index 0000000000..ed6ae86fb9
--- /dev/null
+++ b/libavcodec/utvideo.h
@@ -0,0 +1,91 @@
+/*
+ * Common Ut Video header
+ * Copyright (c) 2011 Konstantin Shishkov
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_UTVIDEO_H
+#define AVCODEC_UTVIDEO_H
+
+/**
+ * @file
+ * Common Ut Video header
+ */
+
+#include "libavutil/common.h"
+#include "avcodec.h"
+#include "dsputil.h"
+
+enum {
+    PRED_NONE = 0,
+    PRED_LEFT,
+    PRED_GRADIENT,
+    PRED_MEDIAN,
+};
+
+enum {
+    COMP_NONE = 0,
+    COMP_HUFF,
+};
+
+/*
+ * "Original format" markers.
+ * Based on values gotten from the official VFW encoder.
+ * They are not used during decoding, but they do have
+ * an informative role on seeing what was input
+ * to the encoder.
+ */
+enum {
+    UTVIDEO_RGB  = MKTAG(0x00, 0x00, 0x01, 0x18),
+    UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18),
+    UTVIDEO_420  = MKTAG('Y', 'V', '1', '2'),
+    UTVIDEO_422  = MKTAG('Y', 'U', 'Y', '2'),
+};
+
+/* Mapping of libavcodec prediction modes to Ut Video's */
+extern const int ff_ut_pred_order[5];
+
+/* Order of RGB(A) planes in Ut Video */
+extern const int ff_ut_rgb_order[4];
+
+typedef struct UtvideoContext {
+    AVCodecContext *avctx;
+    AVFrame        pic;
+    DSPContext     dsp;
+
+    uint32_t frame_info_size, flags, frame_info;
+    int      planes;
+    int      slices;
+    int      compression;
+    int      interlaced;
+    int      frame_pred;
+
+    uint8_t *slice_bits, *slice_buffer;
+    int      slice_bits_size;
+} UtvideoContext;
+
+typedef struct HuffEntry {
+    uint8_t  sym;
+    uint8_t  len;
+    uint32_t code;
+} HuffEntry;
+
+/* Compare huffman tree nodes */
+int ff_ut_huff_cmp_len(const void *a, const void *b);
+
+#endif /* AVCODEC_UTVIDEO_H */