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Diffstat (limited to 'ffmpeg1/libavcodec/fmtconvert.c')
| -rw-r--r-- | ffmpeg1/libavcodec/fmtconvert.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/ffmpeg1/libavcodec/fmtconvert.c b/ffmpeg1/libavcodec/fmtconvert.c deleted file mode 100644 index 79e9645..0000000 --- a/ffmpeg1/libavcodec/fmtconvert.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Format Conversion Utils - * Copyright (c) 2000, 2001 Fabrice Bellard - * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> - * - * 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 - */ - -#include "avcodec.h" -#include "fmtconvert.h" -#include "libavutil/common.h" - -static void int32_to_float_fmul_scalar_c(float *dst, const int *src, float mul, int len){ - int i; - for(i=0; i<len; i++) - dst[i] = src[i] * mul; -} - -static av_always_inline int float_to_int16_one(const float *src){ - return av_clip_int16(lrintf(*src)); -} - -static void float_to_int16_c(int16_t *dst, const float *src, long len) -{ - int i; - for(i=0; i<len; i++) - dst[i] = float_to_int16_one(src+i); -} - -static void float_to_int16_interleave_c(int16_t *dst, const float **src, - long len, int channels) -{ - int i,j,c; - if(channels==2){ - for(i=0; i<len; i++){ - dst[2*i] = float_to_int16_one(src[0]+i); - dst[2*i+1] = float_to_int16_one(src[1]+i); - } - }else{ - for(c=0; c<channels; c++) - for(i=0, j=c; i<len; i++, j+=channels) - dst[j] = float_to_int16_one(src[c]+i); - } -} - -void ff_float_interleave_c(float *dst, const float **src, unsigned int len, - int channels) -{ - int j, c; - unsigned int i; - if (channels == 2) { - for (i = 0; i < len; i++) { - dst[2*i] = src[0][i]; - dst[2*i+1] = src[1][i]; - } - } else if (channels == 1 && len < INT_MAX / sizeof(float)) { - memcpy(dst, src[0], len * sizeof(float)); - } else { - for (c = 0; c < channels; c++) - for (i = 0, j = c; i < len; i++, j += channels) - dst[j] = src[c][i]; - } -} - -av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx) -{ - c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c; - c->float_to_int16 = float_to_int16_c; - c->float_to_int16_interleave = float_to_int16_interleave_c; - c->float_interleave = ff_float_interleave_c; - - if (ARCH_ARM) ff_fmt_convert_init_arm(c, avctx); - if (HAVE_ALTIVEC) ff_fmt_convert_init_altivec(c, avctx); - if (ARCH_X86) ff_fmt_convert_init_x86(c, avctx); - if (HAVE_MIPSFPU) ff_fmt_convert_init_mips(c); -} - -/* ffdshow custom code */ -void float_interleave(float *dst, const float **src, long len, int channels) -{ - int i,j,c; - if(channels==2){ - for(i=0; i<len; i++){ - dst[2*i] = src[0][i] / 32768.0f; - dst[2*i+1] = src[1][i] / 32768.0f; - } - }else{ - for(c=0; c<channels; c++) - for(i=0, j=c; i<len; i++, j+=channels) - dst[j] = src[c][i] / 32768.0f; - } -} - -void float_interleave_noscale(float *dst, const float **src, long len, int channels) -{ - int i,j,c; - if(channels==2){ - for(i=0; i<len; i++){ - dst[2*i] = src[0][i]; - dst[2*i+1] = src[1][i]; - } - }else{ - for(c=0; c<channels; c++) - for(i=0, j=c; i<len; i++, j+=channels) - dst[j] = src[c][i]; - } -} |