repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Format Conversion Utils | |
| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard | |
| 4 | * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> | |
| 5 | * | |
| 6 | * This file is part of FFmpeg. | |
| 7 | * | |
| 8 | * FFmpeg is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License as published by the Free Software Foundation; either | |
| 11 | * version 2.1 of the License, or (at your option) any later version. | |
| 12 | * | |
| 13 | * FFmpeg is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 | * Lesser General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU Lesser General Public | |
| 19 | * License along with FFmpeg; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef AVCODEC_FMTCONVERT_H | |
| 24 | #define AVCODEC_FMTCONVERT_H | |
| 25 | ||
| 26 | #include "avcodec.h" | |
| 27 | ||
| 28 | typedef struct FmtConvertContext { | |
| 29 | /** | |
| 30 | * Convert an array of int32_t to float and multiply by a float value. | |
| 31 | * @param dst destination array of float. | |
| 32 | * constraints: 16-byte aligned | |
| 33 | * @param src source array of int32_t. | |
| 34 | * constraints: 16-byte aligned | |
| 35 | * @param len number of elements to convert. | |
| 36 | * constraints: multiple of 8 | |
| 37 | */ | |
| 38 | void (*int32_to_float_fmul_scalar)(float *dst, const int32_t *src, | |
| 39 | float mul, int len); | |
| 40 | ||
| 41 | /** | |
| 42 | * Convert an array of int32_t to float and multiply by a float value from another array, | |
| 43 | * stepping along the float array once for each 8 integers. | |
| 44 | * @param c pointer to FmtConvertContext. | |
| 45 | * @param dst destination array of float. | |
| 46 | * constraints: 16-byte aligned | |
| 47 | * @param src source array of int32_t. | |
| 48 | * constraints: 16-byte aligned | |
| 49 | * @param mul source array of float multipliers. | |
| 50 | * @param len number of elements to convert. | |
| 51 | * constraints: multiple of 8 | |
| 52 | */ | |
| 53 | void (*int32_to_float_fmul_array8)(struct FmtConvertContext *c, | |
| 54 | float *dst, const int32_t *src, | |
| 55 | const float *mul, int len); | |
| 56 | ||
| 57 | /** | |
| 58 | * Convert an array of float to an array of int16_t. | |
| 59 | * | |
| 60 | * Convert floats from in the range [-32768.0,32767.0] to ints | |
| 61 | * without rescaling | |
| 62 | * | |
| 63 | * @param dst destination array of int16_t. | |
| 64 | * constraints: 16-byte aligned | |
| 65 | * @param src source array of float. | |
| 66 | * constraints: 16-byte aligned | |
| 67 | * @param len number of elements to convert. | |
| 68 | * constraints: multiple of 8 | |
| 69 | */ | |
| 70 | void (*float_to_int16)(int16_t *dst, const float *src, long len); | |
| 71 | ||
| 72 | /** | |
| 73 | * Convert multiple arrays of float to an interleaved array of int16_t. | |
| 74 | * | |
| 75 | * Convert floats from in the range [-32768.0,32767.0] to ints | |
| 76 | * without rescaling | |
| 77 | * | |
| 78 | * @param dst destination array of interleaved int16_t. | |
| 79 | * constraints: 16-byte aligned | |
| 80 | * @param src source array of float arrays, one for each channel. | |
| 81 | * constraints: 16-byte aligned | |
| 82 | * @param len number of elements to convert. | |
| 83 | * constraints: multiple of 8 | |
| 84 | * @param channels number of channels | |
| 85 | */ | |
| 86 | void (*float_to_int16_interleave)(int16_t *dst, const float **src, | |
| 87 | long len, int channels); | |
| 88 | ||
| 89 | /** | |
| 90 | * Convert multiple arrays of float to an array of interleaved float. | |
| 91 | * | |
| 92 | * @param dst destination array of interleaved float. | |
| 93 | * constraints: 16-byte aligned | |
| 94 | * @param src source array of float arrays, one for each channel. | |
| 95 | * constraints: 16-byte aligned | |
| 96 | * @param len number of elements to convert. | |
| 97 | * constraints: multiple of 8 | |
| 98 | * @param channels number of channels | |
| 99 | */ | |
| 100 | void (*float_interleave)(float *dst, const float **src, unsigned int len, | |
| 101 | int channels); | |
| 102 | } FmtConvertContext; | |
| 103 | ||
| 104 | void ff_float_interleave_c(float *dst, const float **src, unsigned int len, | |
| 105 | int channels); | |
| 106 | ||
| 107 | void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx); | |
| 108 | ||
| 109 | void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx); | |
| 110 | void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx); | |
| 111 | void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx); | |
| 112 | void ff_fmt_convert_init_mips(FmtConvertContext *c); | |
| 113 | ||
| 114 | /* ffdshow custom code */ | |
| 115 | void float_interleave(float *dst, const float **src, long len, int channels); | |
| 116 | void float_interleave_noscale(float *dst, const float **src, long len, int channels); | |
| 117 | ||
| 118 | #endif /* AVCODEC_FMTCONVERT_H */ |