278 lines
7.9 KiB
C
278 lines
7.9 KiB
C
/********************************************************************
|
|
* *
|
|
* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
|
|
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
|
|
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
|
|
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
|
|
* *
|
|
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
|
|
* by the Xiph.Org Foundation https://xiph.org/ *
|
|
* *
|
|
********************************************************************
|
|
|
|
function: illustrate seeking, and test it too
|
|
|
|
********************************************************************/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include "vorbis/codec.h"
|
|
#include "vorbis/vorbisfile.h"
|
|
|
|
#ifdef _WIN32 /* We need the following two to set stdin/stdout to binary */
|
|
# include <io.h>
|
|
# include <fcntl.h>
|
|
#endif
|
|
|
|
void _verify(OggVorbis_File *ov,
|
|
ogg_int64_t val,ogg_int64_t pcmval,double timeval,
|
|
ogg_int64_t pcmlength,
|
|
char *bigassbuffer){
|
|
off_t i;
|
|
int j;
|
|
long bread;
|
|
char buffer[4096];
|
|
int dummy;
|
|
ogg_int64_t pos;
|
|
int hs = ov_halfrate_p(ov);
|
|
|
|
/* verify the raw position, the pcm position and position decode */
|
|
if(val!=-1 && ov_raw_tell(ov)<val){
|
|
fprintf(stderr,"raw position out of tolerance: requested %ld, got %ld\n",
|
|
(long)val,(long)ov_raw_tell(ov));
|
|
exit(1);
|
|
}
|
|
if(pcmval!=-1 && ov_pcm_tell(ov)>pcmval){
|
|
fprintf(stderr,"pcm position out of tolerance: requested %ld, got %ld\n",
|
|
(long)pcmval,(long)ov_pcm_tell(ov));
|
|
exit(1);
|
|
}
|
|
if(timeval!=-1 && ov_time_tell(ov)>timeval){
|
|
fprintf(stderr,"time position out of tolerance: requested %f, got %f\n",
|
|
timeval,ov_time_tell(ov));
|
|
exit(1);
|
|
}
|
|
pos=ov_pcm_tell(ov);
|
|
if(pos<0 || pos>pcmlength){
|
|
fprintf(stderr,"pcm position out of bounds: got %ld\n",(long)pos);
|
|
exit(1);
|
|
}
|
|
bread=ov_read(ov,buffer,4096,1,1,1,&dummy);
|
|
for(j=0;j<bread;j++){
|
|
if(buffer[j]!=bigassbuffer[j+((pos>>hs)*2)]){
|
|
fprintf(stderr,"data after seek doesn't match declared pcm position %ld\n",(long)pos);
|
|
|
|
for(i=0;i<(pcmlength>>hs)*2-bread;i++){
|
|
for(j=0;j<bread;j++)
|
|
if(buffer[j] != bigassbuffer[i+j])break;
|
|
if(j==bread){
|
|
fprintf(stderr,"data after seek appears to match position %ld\n",(long)((i/2)<<hs));
|
|
}
|
|
}
|
|
{
|
|
FILE *f=fopen("a.m","w");
|
|
for(j=0;j<bread;j++)fprintf(f,"%d %d\n",j,(int)buffer[j]);
|
|
fclose(f);
|
|
f=fopen("b.m","w");
|
|
for(j=-4096;j<bread+4096;j++)
|
|
if(j+((pos*2)>>hs)>=0 && (j+((pos*2)>>hs))<(pcmlength>>hs)*2)
|
|
fprintf(f,"%d %d\n",j,(int)bigassbuffer[j+((pos*2)>>hs)]);
|
|
fclose(f);
|
|
}
|
|
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(){
|
|
OggVorbis_File ov;
|
|
int i,ret;
|
|
ogg_int64_t pcmlength;
|
|
double timelength;
|
|
char *bigassbuffer;
|
|
int dummy;
|
|
int hs=0;
|
|
|
|
#ifdef _WIN32 /* We need to set stdin/stdout to binary mode. Damn windows. */
|
|
_setmode( _fileno( stdin ), _O_BINARY );
|
|
#endif
|
|
|
|
|
|
/* open the file/pipe on stdin */
|
|
if(ov_open_callbacks(stdin,&ov,NULL,-1,OV_CALLBACKS_NOCLOSE)<0){
|
|
fprintf(stderr,"Could not open input as an OggVorbis file.\n\n");
|
|
exit(1);
|
|
}
|
|
|
|
#if 0 /*enable this code to test seeking with halfrate decode */
|
|
if(ov_halfrate(&ov,1)){
|
|
fprintf(stderr,"Sorry; unable to set half-rate decode.\n\n");
|
|
exit(1);
|
|
}else
|
|
hs=1;
|
|
#endif
|
|
|
|
if(ov_seekable(&ov)){
|
|
|
|
/* to simplify our own lives, we want to assume the whole file is
|
|
stereo. Verify this to avoid potentially mystifying users
|
|
(pissing them off is OK, just don't confuse them) */
|
|
for(i=0;i<ov.links;i++){
|
|
vorbis_info *vi=ov_info(&ov,i);
|
|
if(vi->channels!=2){
|
|
fprintf(stderr,"Sorry; right now seeking_test can only use Vorbis files\n"
|
|
"that are entirely stereo.\n\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* because we want to do sample-level verification that the seek
|
|
does what it claimed, decode the entire file into memory */
|
|
pcmlength=ov_pcm_total(&ov,-1);
|
|
timelength=ov_time_total(&ov,-1);
|
|
bigassbuffer=malloc((pcmlength>>hs)*2); /* w00t */
|
|
i=0;
|
|
while(i<(pcmlength>>hs)*2){
|
|
int ret=ov_read(&ov,bigassbuffer+i,((pcmlength>>hs)*2)-i,1,1,1,&dummy);
|
|
if(ret<0){
|
|
fprintf(stderr,"Error reading file.\n");
|
|
exit(1);
|
|
}
|
|
if(ret){
|
|
i+=ret;
|
|
}else{
|
|
pcmlength=(i/2)<<hs;
|
|
}
|
|
fprintf(stderr,"\rloading.... [%ld left] ",
|
|
(long)((pcmlength>>hs)*2-i));
|
|
}
|
|
|
|
{
|
|
ogg_int64_t length=ov.end;
|
|
fprintf(stderr,"\rtesting raw seeking to random places in %ld bytes....\n",
|
|
(long)length);
|
|
|
|
for(i=0;i<1000;i++){
|
|
ogg_int64_t val=(double)rand()/RAND_MAX*length;
|
|
fprintf(stderr,"\r\t%d [raw position %ld]... ",i,(long)val);
|
|
ret=ov_raw_seek(&ov,val);
|
|
if(ret<0){
|
|
fprintf(stderr,"seek failed: %d\n",ret);
|
|
exit(1);
|
|
}
|
|
|
|
_verify(&ov,val,-1,-1.,pcmlength,bigassbuffer);
|
|
|
|
}
|
|
}
|
|
|
|
fprintf(stderr,"\r");
|
|
{
|
|
fprintf(stderr,"testing pcm page seeking to random places in %ld samples....\n",
|
|
(long)pcmlength);
|
|
|
|
for(i=0;i<1000;i++){
|
|
ogg_int64_t val= i==0?(ogg_int64_t)0:(double)rand()/RAND_MAX*pcmlength;
|
|
fprintf(stderr,"\r\t%d [pcm position %ld]... ",i,(long)val);
|
|
ret=ov_pcm_seek_page(&ov,val);
|
|
if(ret<0){
|
|
fprintf(stderr,"seek failed: %d\n",ret);
|
|
exit(1);
|
|
}
|
|
|
|
_verify(&ov,-1,val,-1.,pcmlength,bigassbuffer);
|
|
|
|
}
|
|
}
|
|
|
|
fprintf(stderr,"\r");
|
|
{
|
|
fprintf(stderr,"testing pcm exact seeking to random places in %f seconds....\n",
|
|
timelength);
|
|
for(i=0;i<1000;i++){
|
|
ogg_int64_t val= i==0?(ogg_int64_t)0:(double)rand()/RAND_MAX*pcmlength;
|
|
fprintf(stderr,"\r\t%d [pcm position %ld]... ",i,(long)val);
|
|
ret=ov_pcm_seek(&ov,val);
|
|
if(ret<0){
|
|
fprintf(stderr,"seek failed: %d\n",ret);
|
|
exit(1);
|
|
}
|
|
if(ov_pcm_tell(&ov)!=((val>>hs)<<hs)){
|
|
fprintf(stderr,"Declared position didn't perfectly match request: %ld != %ld\n",
|
|
(long)val,(long)ov_pcm_tell(&ov));
|
|
exit(1);
|
|
}
|
|
|
|
_verify(&ov,-1,val,-1.,pcmlength,bigassbuffer);
|
|
|
|
}
|
|
}
|
|
|
|
fprintf(stderr,"\r");
|
|
{
|
|
fprintf(stderr,"testing time page seeking to random places in %f seconds....\n",
|
|
timelength);
|
|
|
|
for(i=0;i<1000;i++){
|
|
double val=(double)rand()/RAND_MAX*timelength;
|
|
fprintf(stderr,"\r\t%d [time position %f]... ",i,val);
|
|
ret=ov_time_seek_page(&ov,val);
|
|
if(ret<0){
|
|
fprintf(stderr,"seek failed: %d\n",ret);
|
|
exit(1);
|
|
}
|
|
|
|
_verify(&ov,-1,-1,val,pcmlength,bigassbuffer);
|
|
|
|
}
|
|
}
|
|
|
|
fprintf(stderr,"\r");
|
|
{
|
|
fprintf(stderr,"testing time exact seeking to random places in %f seconds....\n",
|
|
timelength);
|
|
|
|
for(i=0;i<1000;i++){
|
|
double val=(double)rand()/RAND_MAX*timelength;
|
|
fprintf(stderr,"\r\t%d [time position %f]... ",i,val);
|
|
ret=ov_time_seek(&ov,val);
|
|
if(ret<0){
|
|
fprintf(stderr,"seek failed: %d\n",ret);
|
|
exit(1);
|
|
}
|
|
if(ov_time_tell(&ov)<val-1 || ov_time_tell(&ov)>val+1){
|
|
fprintf(stderr,"Declared position didn't perfectly match request: %f != %f\n",
|
|
val,ov_time_tell(&ov));
|
|
exit(1);
|
|
}
|
|
|
|
_verify(&ov,-1,-1,val,pcmlength,bigassbuffer);
|
|
|
|
}
|
|
}
|
|
|
|
fprintf(stderr,"\r \nOK.\n\n");
|
|
|
|
|
|
}else{
|
|
fprintf(stderr,"Standard input was not seekable.\n");
|
|
}
|
|
|
|
ov_clear(&ov);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|