From 76c443c6d4c6b414eea6b0826ff6a0361795234d Mon Sep 17 00:00:00 2001
From: Aurelien Jacobs <aurel@gnuage.org>
Date: Thu, 1 Nov 2007 18:40:42 +0000
Subject: move adx.c to adxdec.c

Originally committed as revision 10904 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/adx.c | 169 -------------------------------------------------------
 1 file changed, 169 deletions(-)
 delete mode 100644 libavcodec/adx.c

(limited to 'libavcodec/adx.c')

diff --git a/libavcodec/adx.c b/libavcodec/adx.c
deleted file mode 100644
index cc7ca5ffcf..0000000000
--- a/libavcodec/adx.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * ADX ADPCM codecs
- * Copyright (c) 2001,2003 BERO
- *
- * 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 "adx.h"
-
-/**
- * @file adx.c
- * SEGA CRI adx codecs.
- *
- * Reference documents:
- * http://ku-www.ss.titech.ac.jp/~yatsushi/adx.html
- * adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/
- */
-
-/* 18 bytes <-> 32 samples */
-
-static void adx_decode(short *out,const unsigned char *in,PREV *prev)
-{
-    int scale = AV_RB16(in);
-    int i;
-    int s0,s1,s2,d;
-
-//    printf("%x ",scale);
-
-    in+=2;
-    s1 = prev->s1;
-    s2 = prev->s2;
-    for(i=0;i<16;i++) {
-        d = in[i];
-        // d>>=4; if (d&8) d-=16;
-        d = ((signed char)d >> 4);
-        s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
-        s2 = s1;
-        s1 = av_clip_int16(s0);
-        *out++=s1;
-
-        d = in[i];
-        //d&=15; if (d&8) d-=16;
-        d = ((signed char)(d<<4) >> 4);
-        s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
-        s2 = s1;
-        s1 = av_clip_int16(s0);
-        *out++=s1;
-    }
-    prev->s1 = s1;
-    prev->s2 = s2;
-
-}
-
-static void adx_decode_stereo(short *out,const unsigned char *in,PREV *prev)
-{
-    short tmp[32*2];
-    int i;
-
-    adx_decode(tmp   ,in   ,prev);
-    adx_decode(tmp+32,in+18,prev+1);
-    for(i=0;i<32;i++) {
-        out[i*2]   = tmp[i];
-        out[i*2+1] = tmp[i+32];
-    }
-}
-
-/* return data offset or 0 */
-static int adx_decode_header(AVCodecContext *avctx,const unsigned char *buf,size_t bufsize)
-{
-    int offset;
-
-    if (buf[0]!=0x80) return 0;
-    offset = (AV_RB32(buf)^0x80000000)+4;
-    if (bufsize<offset || memcmp(buf+offset-6,"(c)CRI",6)) return 0;
-
-    avctx->channels    = buf[7];
-    avctx->sample_rate = AV_RB32(buf+8);
-    avctx->bit_rate    = avctx->sample_rate*avctx->channels*18*8/32;
-
-    return offset;
-}
-
-static int adx_decode_frame(AVCodecContext *avctx,
-                void *data, int *data_size,
-                uint8_t *buf0, int buf_size)
-{
-    ADXContext *c = avctx->priv_data;
-    short *samples = data;
-    const uint8_t *buf = buf0;
-    int rest = buf_size;
-
-    if (!c->header_parsed) {
-        int hdrsize = adx_decode_header(avctx,buf,rest);
-        if (hdrsize==0) return -1;
-        c->header_parsed = 1;
-        buf  += hdrsize;
-        rest -= hdrsize;
-    }
-
-    /* 18 bytes of data are expanded into 32*2 bytes of audio,
-       so guard against buffer overflows */
-    if(rest/18 > *data_size/64)
-        rest = (*data_size/64) * 18;
-
-    if (c->in_temp) {
-        int copysize = 18*avctx->channels - c->in_temp;
-        memcpy(c->dec_temp+c->in_temp,buf,copysize);
-        rest -= copysize;
-        buf  += copysize;
-        if (avctx->channels==1) {
-            adx_decode(samples,c->dec_temp,c->prev);
-            samples += 32;
-        } else {
-            adx_decode_stereo(samples,c->dec_temp,c->prev);
-            samples += 32*2;
-        }
-    }
-    //
-    if (avctx->channels==1) {
-        while(rest>=18) {
-            adx_decode(samples,buf,c->prev);
-            rest-=18;
-            buf+=18;
-            samples+=32;
-        }
-    } else {
-        while(rest>=18*2) {
-            adx_decode_stereo(samples,buf,c->prev);
-            rest-=18*2;
-            buf+=18*2;
-            samples+=32*2;
-        }
-    }
-    //
-    c->in_temp = rest;
-    if (rest) {
-        memcpy(c->dec_temp,buf,rest);
-        buf+=rest;
-    }
-    *data_size = (uint8_t*)samples - (uint8_t*)data;
-//    printf("%d:%d ",buf-buf0,*data_size); fflush(stdout);
-    return buf-buf0;
-}
-
-AVCodec adpcm_adx_decoder = {
-    "adpcm_adx",
-    CODEC_TYPE_AUDIO,
-    CODEC_ID_ADPCM_ADX,
-    sizeof(ADXContext),
-    NULL,
-    NULL,
-    NULL,
-    adx_decode_frame,
-};
-
-- 
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