typo fix
[mplayer/greg.git] / liba52 / test.c
blobcbc58be39492ed1135f90d15abe4cb1f4572de77
1 /*
2 * liba52 sample by A'rpi/ESP-team
3 * Reads an AC-3 stream from stdin, decodes and downmixes to s16 stereo PCM
4 * and writes it to stdout. The resulting stream is playable with sox:
5 * play -c2 -r48000 -sw -fs out.sw
7 * Copyright (C) 2001 Árpád Gereöffy
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 //#define TIMING //needs Pentium or newer
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <inttypes.h>
29 #include <string.h>
31 #include "a52.h"
32 #include "mm_accel.h"
33 #include "../cpudetect.h"
35 static a52_state_t *state;
36 static uint8_t buf[3840];
37 static int buf_size=0;
39 static int16_t out_buf[6*256*6];
41 void mp_msg( int x, const char *format, ... ) // stub for cpudetect.c
45 #ifdef TIMING
46 static inline long long rdtsc()
48 long long l;
49 asm volatile( "rdtsc\n\t"
50 : "=A" (l)
52 // printf("%d\n", int(l/1000));
53 return l;
56 #define STARTTIMING t=rdtsc();
57 #define ENDTIMING sum+=rdtsc()-t; t=rdtsc();
58 #else
59 #define STARTTIMING ;
60 #define ENDTIMING ;
61 #endif
64 int main(void){
65 int accel=0;
66 int sample_rate=0;
67 int bit_rate=0;
68 #ifdef TIMING
69 long long t, sum=0, min=256*256*256*64;
70 #endif
72 FILE *temp= stdout;
73 stdout= stderr; //EVIL HACK FIXME
74 GetCpuCaps(&gCpuCaps);
75 stdout= temp;
76 // gCpuCaps.hasMMX=0;
77 // gCpuCaps.hasSSE=0;
78 if(gCpuCaps.hasMMX) accel |= MM_ACCEL_X86_MMX;
79 if(gCpuCaps.hasMMX2) accel |= MM_ACCEL_X86_MMXEXT;
80 if(gCpuCaps.hasSSE) accel |= MM_ACCEL_X86_SSE;
81 if(gCpuCaps.has3DNow) accel |= MM_ACCEL_X86_3DNOW;
82 // if(gCpuCaps.has3DNowExt) accel |= MM_ACCEL_X86_3DNOWEXT;
84 state = a52_init (accel);
85 if (state == NULL) {
86 fprintf (stderr, "A52 init failed\n");
87 return 1;
90 while(1){
91 int length,i;
92 int16_t *s16;
93 sample_t level=1, bias=384;
94 int flags=0;
95 int channels=0;
97 while(buf_size<7){
98 int c=getchar();
99 if(c<0) goto eof;
100 buf[buf_size++]=c;
102 STARTTIMING
103 length = a52_syncinfo (buf, &flags, &sample_rate, &bit_rate);
104 ENDTIMING
105 if(!length){
106 // bad file => resync
107 memcpy(buf,buf+1,6);
108 --buf_size;
109 continue;
111 fprintf(stderr,"sync. %d bytes 0x%X %d Hz %d kbit\n",length,flags,sample_rate,bit_rate);
112 while(buf_size<length){
113 buf[buf_size++]=getchar();
116 buf_size=0;
118 // decode:
119 flags=A52_STEREO; //A52_STEREO; //A52_DOLBY; //A52_STEREO; // A52_DOLBY // A52_2F2R // A52_3F2R | A52_LFE
120 channels=2;
122 flags |= A52_ADJUST_LEVEL;
123 STARTTIMING
124 if (a52_frame (state, buf, &flags, &level, bias))
125 { fprintf(stderr,"error at decoding\n"); continue; }
126 ENDTIMING
128 // a52_dynrng (state, NULL, NULL); // disable dynamic range compensation
130 STARTTIMING
131 a52_resample_init(accel,flags,channels);
132 s16 = out_buf;
133 for (i = 0; i < 6; i++) {
134 if (a52_block (state))
135 { fprintf(stderr,"error at sampling\n"); break; }
136 // float->int + channels interleaving:
137 s16+=a52_resample(a52_samples(state),s16);
138 ENDTIMING
140 #ifdef TIMING
141 if(sum<min) min=sum;
142 sum=0;
143 #endif
144 fwrite(out_buf,6*256*2*channels,1,stdout);
148 eof:
149 #ifdef TIMING
150 fprintf(stderr, "%4.4fk cycles\n",min/1000.0);
151 sum=0;
152 #endif
153 return 0;