code.delx.au - pulseaudio/blob - src/pulsecore/ffmpeg/avcodec.h

   1 /*
   2  * copyright (c) 2001 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef AVCODEC_H
  22 #define AVCODEC_H
  23
  24 /* Just a heavily bastardized version of the original file from
  25  * ffmpeg, just enough to get resample2.c to compile without
  26  * modification -- Lennart */
  27
  28 #if !defined(PACKAGE) && defined(HAVE_CONFIG_H)
  29 #include <config.h>
  30 #endif
  31
  32 #include <sys/types.h>
  33 #include <inttypes.h>
  34 #include <math.h>
  35 #include <string.h>
  36 #include <stdlib.h>
  37 #include <assert.h>
  38
  39 #define av_mallocz(l) calloc(1, (l))
  40 #define av_malloc(l) malloc(l)
  41 #define av_realloc(p,l) realloc((p),(l))
  42 #define av_free(p) free(p)
  43
  44 static inline void av_freep(void *k) {
  45     void **p = k;
  46
  47     if (p) {
  48         free(*p);
  49         *p = NULL;
  50     }
  51 }
  52
  53 static inline int av_clip(int a, int amin, int amax)
  54 {
  55     if (a < amin)      return amin;
  56     else if (a > amax) return amax;
  57     else               return a;
  58 }
  59
  60 #define av_log(a,b,c)
  61
  62 #define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
  63 #define FFSIGN(a) ((a) > 0 ? 1 : -1)
  64
  65 #define FFMAX(a,b) ((a) > (b) ? (a) : (b))
  66 #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
  67
  68 struct AVResampleContext;
  69 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
  70 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
  71 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
  72 void av_resample_close(struct AVResampleContext *c);
  73 void av_build_filter(int16_t *filter, double factor, int tap_count, int phase_count, int scale, int type);
  74
  75 /*
  76  * crude lrintf for non-C99 systems.
  77  */
  78 #ifndef HAVE_LRINTF
  79 #define lrintf(x) ((long int)(x))
  80 #endif
  81
  82 #endif /* AVCODEC_H */