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authorMichael Niedermayer <michaelni@gmx.at>2008-12-26 13:39:19 +0000
committerMichael Niedermayer <michaelni@gmx.at>2008-12-26 13:39:19 +0000
commit8d48db314eeb088e264dedf088b90e948b151b90 (patch)
tree4b52dbebab25346f1de2c886c80dd59b4cae8070 /libavcodec/faxcompr.h
parentdf2a3f2714af1c6f8d45ea95f05be6b05eb7672f (diff)
downloadffmpeg-8d48db314eeb088e264dedf088b90e948b151b90.tar.gz
CCITT Fax Group 3 and 4 decompression by kostya.
Will be activated after a little more reviewing and fixing by me. Commited now, so as to not lose history of that. Originally committed as revision 16323 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/faxcompr.h')
-rw-r--r--libavcodec/faxcompr.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/libavcodec/faxcompr.h b/libavcodec/faxcompr.h
new file mode 100644
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+++ b/libavcodec/faxcompr.h
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+/*
+ * CCITT Fax Group 3 and 4 decompression
+ * Copyright (c) 2008 Konstantin Shishkov
+ *
+ * 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
+ */
+
+/**
+ * CCITT Fax Group 3 and 4 decompression
+ * @file faxcompr.h
+ * @author Konstantin Shishkov
+ */
+#ifndef AVCODEC_FAXCOMPR_H
+#define AVCODEC_FAXCOMPR_H
+
+#include "avcodec.h"
+
+/**
+ * initialize upacker code
+ */
+void ff_ccitt_unpack_init();
+
+/**
+ * unpack data compressed with CCITT Group 3 1-D method
+ */
+int ff_ccitt_unpack_1d(AVCodecContext *avctx,
+ const uint8_t *src, int srcsize,
+ uint8_t *dst, int height, int stride);
+
+/**
+ * unpack data compressed with CCITT Group 3 2-D or Group 4 method
+ */
+int ff_ccitt_unpack_2d(AVCodecContext *avctx,
+ const uint8_t *src, int srcsize,
+ uint8_t *dst, int height, int stride, int g4);
+
+#endif /* AVCODEC_FAXCOMPR_H */