From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h | 66 ++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h (limited to 'lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h') diff --git a/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h b/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h new file mode 100644 index 0000000000..6788054bff --- /dev/null +++ b/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h @@ -0,0 +1,66 @@ +/* + * LZO 1x decompression + * copyright (c) 2006 Reimar Doeffinger + * + * 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 AVUTIL_LZO_H +#define AVUTIL_LZO_H + +#include + +/** \defgroup errflags Error flags returned by av_lzo1x_decode + * \{ */ +//! end of the input buffer reached before decoding finished +#define AV_LZO_INPUT_DEPLETED 1 +//! decoded data did not fit into output buffer +#define AV_LZO_OUTPUT_FULL 2 +//! a reference to previously decoded data was wrong +#define AV_LZO_INVALID_BACKPTR 4 +//! a non-specific error in the compressed bitstream +#define AV_LZO_ERROR 8 +/** \} */ + +#define AV_LZO_INPUT_PADDING 8 +#define AV_LZO_OUTPUT_PADDING 12 + +/** + * \brief Decodes LZO 1x compressed data. + * \param out output buffer + * \param outlen size of output buffer, number of bytes left are returned here + * \param in input buffer + * \param inlen size of input buffer, number of bytes left are returned here + * \return 0 on success, otherwise a combination of the error flags above + * + * Make sure all buffers are appropriately padded, in must provide + * AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes. + */ +int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen); + +/** + * \brief deliberately overlapping memcpy implementation + * \param dst destination buffer; must be padded with 12 additional bytes + * \param back how many bytes back we start (the initial size of the overlapping window) + * \param cnt number of bytes to copy, must be >= 0 + * + * cnt > back is valid, this will copy the bytes we just copied, + * thus creating a repeating pattern with a period length of back. + */ +void av_memcpy_backptr(uint8_t *dst, int back, int cnt); + +#endif /* AVUTIL_LZO_H */ -- cgit v1.2.3