mdct.h
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:1k
源码类别:
midi
开发平台:
Unix_Linux
- /*
- * WMA compatible decoder
- * Copyright (c) 2002 The FFmpeg Project.
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #ifndef WMA_MDCT_H
- #define WMA_MDCT_H 1
- #include "fft.h"
- typedef struct MDCTContext
- {
- int n; /* size of MDCT (i.e. number of input data * 2) */
- int nbits; /* n = 2^nbits */
- /* pre/post rotation tables */
- int32_t *tcos;
- int32_t *tsin;
- FFTContext fft;
- }
- MDCTContext;
- int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
- void ff_imdct_calc(MDCTContext *s, int32_t *output, int32_t *input);
- int mdct_init_global(void);
- #endif