LCOV - code coverage report
Current view: top level - libswresample - audioconvert.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 65 111 58.6 %
Date: 2017-10-24 00:14:43 Functions: 18 43 41.9 %

          Line data    Source code
       1             : /*
       2             :  * audio conversion
       3             :  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : /**
      23             :  * @file
      24             :  * audio conversion
      25             :  * @author Michael Niedermayer <michaelni@gmx.at>
      26             :  */
      27             : 
      28             : #include "libavutil/avstring.h"
      29             : #include "libavutil/avassert.h"
      30             : #include "libavutil/libm.h"
      31             : #include "libavutil/samplefmt.h"
      32             : #include "audioconvert.h"
      33             : 
      34             : 
      35             : #define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt
      36             : 
      37             : //FIXME rounding ?
      38             : #define CONV_FUNC(ofmt, otype, ifmt, expr)\
      39             : static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\
      40             : {\
      41             :     uint8_t *end2 = end - 3*os;\
      42             :     while(po < end2){\
      43             :         *(otype*)po = expr; pi += is; po += os;\
      44             :         *(otype*)po = expr; pi += is; po += os;\
      45             :         *(otype*)po = expr; pi += is; po += os;\
      46             :         *(otype*)po = expr; pi += is; po += os;\
      47             :     }\
      48             :     while(po < end){\
      49             :         *(otype*)po = expr; pi += is; po += os;\
      50             :     }\
      51             : }
      52             : 
      53             : //FIXME put things below under ifdefs so we do not waste space for cases no codec will need
      54           0 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_U8 ,  *(const uint8_t*)pi)
      55        3934 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<8)
      56           0 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<24)
      57           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8 , (uint64_t)((*(const uint8_t*)pi - 0x80U))<<56)
      58           0 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0f/ (1<<7)))
      59           0 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0 / (1<<7)))
      60        1954 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S16, (*(const int16_t*)pi>>8) + 0x80)
      61      152975 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16,  *(const int16_t*)pi)
      62        6817 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16,  *(const int16_t*)pi<<16)
      63           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16, (uint64_t)(*(const int16_t*)pi)<<48)
      64       17072 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_S16,  *(const int16_t*)pi*(1.0f/ (1<<15)))
      65        4304 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S16,  *(const int16_t*)pi*(1.0 / (1<<15)))
      66           0 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S32, (*(const int32_t*)pi>>24) + 0x80)
      67       35943 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32,  *(const int32_t*)pi>>16)
      68       36890 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S32,  *(const int32_t*)pi)
      69           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32, (uint64_t)(*(const int32_t*)pi)<<32)
      70           0 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_S32,  *(const int32_t*)pi*(1.0f/ (1U<<31)))
      71         586 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S32,  *(const int32_t*)pi*(1.0 / (1U<<31)))
      72           0 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S64, (*(const int64_t*)pi>>56) + 0x80)
      73           0 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S64,  *(const int64_t*)pi>>48)
      74           0 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S64,  *(const int64_t*)pi>>32)
      75           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S64,  *(const int64_t*)pi)
      76           0 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_S64,  *(const int64_t*)pi*(1.0f/ (INT64_C(1)<<63)))
      77           0 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S64,  *(const int64_t*)pi*(1.0 / (INT64_C(1)<<63)))
      78           0 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(  lrintf(*(const float*)pi * (1<<7)) + 0x80))
      79      172397 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(  lrintf(*(const float*)pi * (1<<15))))
      80           0 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float*)pi * (1U<<31))))
      81           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float*)pi * (INT64_C(1)<<63)))
      82        2199 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_FLT, *(const float*)pi)
      83         130 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_FLT, *(const float*)pi)
      84           0 : CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(  lrint(*(const double*)pi * (1<<7)) + 0x80))
      85        9116 : CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(  lrint(*(const double*)pi * (1<<15))))
      86           0 : CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double*)pi * (1U<<31))))
      87           0 : CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double*)pi * (INT64_C(1)<<63)))
      88         130 : CONV_FUNC(AV_SAMPLE_FMT_FLT, float  , AV_SAMPLE_FMT_DBL, *(const double*)pi)
      89        2592 : CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_DBL, *(const double*)pi)
      90             : 
      91             : #define FMT_PAIR_FUNC(out, in) [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)
      92             : 
      93             : static conv_func_type * const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB*AV_SAMPLE_FMT_NB] = {
      94             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_U8 ),
      95             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8 ),
      96             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8 ),
      97             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8 ),
      98             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8 ),
      99             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8 ),
     100             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S16),
     101             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16),
     102             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16),
     103             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16),
     104             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16),
     105             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16),
     106             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S32),
     107             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32),
     108             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32),
     109             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32),
     110             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32),
     111             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32),
     112             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_FLT),
     113             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT),
     114             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT),
     115             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT),
     116             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT),
     117             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT),
     118             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_DBL),
     119             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL),
     120             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL),
     121             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL),
     122             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL),
     123             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL),
     124             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S64),
     125             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64),
     126             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64),
     127             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64),
     128             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64),
     129             :     FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),
     130             : };
     131             : 
     132           0 : static void cpy1(uint8_t **dst, const uint8_t **src, int len){
     133           0 :     memcpy(*dst, *src, len);
     134           0 : }
     135           0 : static void cpy2(uint8_t **dst, const uint8_t **src, int len){
     136           0 :     memcpy(*dst, *src, 2*len);
     137           0 : }
     138           0 : static void cpy4(uint8_t **dst, const uint8_t **src, int len){
     139           0 :     memcpy(*dst, *src, 4*len);
     140           0 : }
     141           0 : static void cpy8(uint8_t **dst, const uint8_t **src, int len){
     142           0 :     memcpy(*dst, *src, 8*len);
     143           0 : }
     144             : 
     145        1870 : AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
     146             :                                        enum AVSampleFormat in_fmt,
     147             :                                        int channels, const int *ch_map,
     148             :                                        int flags)
     149             : {
     150             :     AudioConvert *ctx;
     151        1870 :     conv_func_type *f = fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt) + AV_SAMPLE_FMT_NB*av_get_packed_sample_fmt(in_fmt)];
     152             : 
     153        1870 :     if (!f)
     154           0 :         return NULL;
     155        1870 :     ctx = av_mallocz(sizeof(*ctx));
     156        1870 :     if (!ctx)
     157           0 :         return NULL;
     158             : 
     159        1870 :     if(channels == 1){
     160        1415 :          in_fmt = av_get_planar_sample_fmt( in_fmt);
     161        1415 :         out_fmt = av_get_planar_sample_fmt(out_fmt);
     162             :     }
     163             : 
     164        1870 :     ctx->channels = channels;
     165        1870 :     ctx->conv_f   = f;
     166        1870 :     ctx->ch_map   = ch_map;
     167        1870 :     if (in_fmt == AV_SAMPLE_FMT_U8 || in_fmt == AV_SAMPLE_FMT_U8P)
     168          22 :         memset(ctx->silence, 0x80, sizeof(ctx->silence));
     169             : 
     170        1870 :     if(out_fmt == in_fmt && !ch_map) {
     171         901 :         switch(av_get_bytes_per_sample(in_fmt)){
     172           0 :             case 1:ctx->simd_f = cpy1; break;
     173         371 :             case 2:ctx->simd_f = cpy2; break;
     174         370 :             case 4:ctx->simd_f = cpy4; break;
     175         160 :             case 8:ctx->simd_f = cpy8; break;
     176             :         }
     177             :     }
     178             : 
     179        1870 :     if(HAVE_X86ASM && HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);
     180             :     if(ARCH_ARM)              swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);
     181             :     if(ARCH_AARCH64)          swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);
     182             : 
     183        1870 :     return ctx;
     184             : }
     185             : 
     186        7254 : void swri_audio_convert_free(AudioConvert **ctx)
     187             : {
     188        7254 :     av_freep(ctx);
     189        7254 : }
     190             : 
     191      240949 : int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
     192             : {
     193             :     int ch;
     194      240949 :     int off=0;
     195      240949 :     const int os= (out->planar ? 1 :out->ch_count) *out->bps;
     196      240949 :     unsigned misaligned = 0;
     197             : 
     198      240949 :     av_assert0(ctx->channels == out->ch_count);
     199             : 
     200      240949 :     if (ctx->in_simd_align_mask) {
     201           0 :         int planes = in->planar ? in->ch_count : 1;
     202           0 :         unsigned m = 0;
     203           0 :         for (ch = 0; ch < planes; ch++)
     204           0 :             m |= (intptr_t)in->ch[ch];
     205           0 :         misaligned |= m & ctx->in_simd_align_mask;
     206             :     }
     207      240949 :     if (ctx->out_simd_align_mask) {
     208           0 :         int planes = out->planar ? out->ch_count : 1;
     209           0 :         unsigned m = 0;
     210           0 :         for (ch = 0; ch < planes; ch++)
     211           0 :             m |= (intptr_t)out->ch[ch];
     212           0 :         misaligned |= m & ctx->out_simd_align_mask;
     213             :     }
     214             : 
     215             :     //FIXME optimize common cases
     216             : 
     217      240949 :     if(ctx->simd_f && !ctx->ch_map && !misaligned){
     218         105 :         off = len&~15;
     219             :         av_assert1(off>=0);
     220             :         av_assert1(off<=len);
     221             :         av_assert2(ctx->channels == SWR_CH_MAX || !in->ch[ctx->channels]);
     222         105 :         if(off>0){
     223         105 :             if(out->planar == in->planar){
     224          58 :                 int planes = out->planar ? out->ch_count : 1;
     225         116 :                 for(ch=0; ch<planes; ch++){
     226          58 :                     ctx->simd_f(out->ch+ch, (const uint8_t **)in->ch+ch, off * (out->planar ? 1 :out->ch_count));
     227             :                 }
     228             :             }else{
     229          47 :                 ctx->simd_f(out->ch, (const uint8_t **)in->ch, off);
     230             :             }
     231             :         }
     232         105 :         if(off == len)
     233         105 :             return 0;
     234             :     }
     235             : 
     236      687935 :     for(ch=0; ch<ctx->channels; ch++){
     237      447091 :         const int ich= ctx->ch_map ? ctx->ch_map[ch] : ch;
     238      447091 :         const int is= ich < 0 ? 0 : (in->planar ? 1 : in->ch_count) * in->bps;
     239      447091 :         const uint8_t *pi= ich < 0 ? ctx->silence : in->ch[ich];
     240      447091 :         uint8_t       *po= out->ch[ch];
     241      447091 :         uint8_t *end= po + os*len;
     242      447091 :         if(!po)
     243          52 :             continue;
     244      447039 :         ctx->conv_f(po+off*os, pi+off*is, is, os, end);
     245             :     }
     246      240844 :     return 0;
     247             : }

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