/**
\fn getPacket
*/
uint8_t ADM_audioStreamDCA::getPacket(uint8_t *obuffer,uint32_t *osize, uint32_t sizeMax,uint32_t *nbSample,uint64_t *dts)
{
#define ADM_LOOK_AHEAD DTS_HEADER_SIZE // Need 10 bytes...
uint8_t data[ADM_LOOK_AHEAD];
uint32_t offset;
ADM_DCA_INFO info;
while(1)
{
// Do we have sync ?
if(needBytes(ADM_LOOK_AHEAD)==false)
{
ADM_warning("DCA: Not sync found in buffer\n");
return false;
}
// Peek
peek(ADM_LOOK_AHEAD,data);
// Search start seq
if(buffer[start]!=0x7F || buffer[start+1]!=0xFE)
{
read8();
continue;
}
if(buffer[start+2]!=0x80 || buffer[start+3]!=0x1)
{
read8();
read8();
continue;
}
if(false== ADM_DCAGetInfo(buffer+start, limit-start,&info,&offset))
{
read8();
read8();
read8();
read8();
continue;
}
ADM_assert(info.frameSizeInBytes<=sizeMax);
if(needBytes(info.frameSizeInBytes)==false)
{
ADM_warning("DCA: Not enough data\n");
return false;
}
*osize=info.frameSizeInBytes;
read(*osize,obuffer);
*nbSample=info.samples;
*dts=lastDts;
advanceDtsBySample(*nbSample);
return 1;
}
}
/**
\fn getPacket
*/
uint8_t ADM_audioStreamAC3::getPacket(uint8_t *obuffer,uint32_t *osize, uint32_t sizeMax,uint32_t *nbSample,uint64_t *dts)
{
#define ADM_LOOK_AHEAD 6 // Need 6 bytes...
uint8_t data[ADM_LOOK_AHEAD];
int size;
int flags,sample_rate,bit_rate;
while(1)
{
// Do we have sync ?
if(needBytes(ADM_LOOK_AHEAD)==false) return 0;
// Peek
peek(ADM_LOOK_AHEAD,data);
// Search start seq
if(buffer[start]!=0x0b || buffer[start+1]!=0x77)
{
read8();
continue;
}
//
size= ADM_a52_syncinfo (buffer+start, &flags, &sample_rate, &bit_rate);
if(!size)
{
read8();
continue;
}
ADM_assert(size<=sizeMax);
if(needBytes(size)==false)
{
return false;
}
*osize=size;
read(size,obuffer);
*nbSample=256*6;
*dts=lastDts;
advanceDtsBySample(*nbSample);
return 1;
}
}
int Forward(void *p){
int *forwarding;
int realSize = 0;
char *class_gc_map;
if (p>=(void*)heap.from && p<(void*)heap.from+heap.size ){
forwarding= (int*)p+3;
if ( *forwarding>=(int)heap.to && *forwarding<(int)heap.to+heap.size ){
return *forwarding;
}else{
*forwarding=(int)heap.toNext;
if( 0 == *((int*)p+1 )){ //object
class_gc_map=(char*)(*(int*)(*((int*)p))); // the fields map
realSize = needBytes(strlen(class_gc_map));
memcpy(heap.toNext,p,realSize);
}else{ //array
realSize = needBytes(*((int*)p +2));
memcpy(heap.toNext,p,realSize);
}
heap.toNext = heap.toNext + realSize;
}
return *forwarding;
}
return (int)p;
}
// Try to allocate an array object in the "from" space of the Java
// heap. Read Tiger book chapter 13.3 for details on the
// allocation.
// There are two cases to consider:
// 1. If the "from" space has enough space to hold this array object, then
// allocation succeeds, return the apropriate address (look at
// the above figure, be careful);
// 2. if there is no enough space left in the "from" space, then
// you should call the function "Tiger_gc()" to collect garbages.
// and after the collection, there are still two sub-cases:
// a: if there is enough space, you can do allocations just as case 1;
// b: if there is still no enough space, you can just issue
// an error message ("OutOfMemory") and exit.
// (However, a production compiler will try to expand
// the Java heap.)
//#define needBytes(length) Header + sizeof(int)*length
void *Tiger_new_array (int length){
int needSpace = needBytes(length);
if ( FreeSpace < needSpace ){
Tiger_gc();
if ( FreeSpace < needSpace ){
printf("OutOfMemory\n");
exit(-1);
}
}
memset(heap.fromFree,0,needSpace);
int *p =(int*) heap.fromFree;
heap.fromFree += needSpace;
p[0] = 0;
p[1] = 1;
p[2] = length;
p[3] = 0;
return (void*)p;
}
static void Tiger_gc (){
FILE *logfile=fopen("gc_log.txt","a");
round++;
struct timeval gc_start,gc_end;
float gc_time;
gettimeofday(&gc_start,NULL);
int preGC = (int)heap.fromFree - (int)heap.from;
// printf("preGC:%d\n",preGC);
heap.toNext = heap.to; //point to vptr
char *scan = heap.toNext;
void *prePrev=prev; // mark the head frame chain
while(NULL != prev){
//args forward
char *args_gc_map = (char*)(*((int*)prev+1));
int *args=(int*)(*((int*)prev+2));
int locals_gc_map = *((int*)prev+3);
int *locals=(int*)prev+4;
// printf("args_gc_map:%s\n",args_gc_map);
while('\0' != *args_gc_map){
if('1' == *args_gc_map){
*args = Forward((int*)(*args));
}
args++;
args_gc_map++;
}
//locals forward
while(locals_gc_map > 0){
*locals=Forward((int*)(*locals));
locals++;
locals_gc_map--;
}
prev=(void*)(*(int*)prev);
}
prev=prePrev; //
while(scan<heap.toNext){
int scan_size=0;
if(0==*((int*)scan + 1)){ //object
int *scan_fields = (int*)scan + 4;
char *class_gc_map=(char*)(*(int*)(*(int*)scan));
while( '\0' != *class_gc_map){
if( '1' == *class_gc_map){
*scan_fields = Forward((int*)(*scan_fields));
}
scan_size++;
scan_fields++;
class_gc_map++;
}
}else{ //array
scan_size+=*((int*)scan+2);
}
scan = scan + needBytes(scan_size);
}
int afterGC = (int)heap.toNext - (int)heap.to;
// printf("afterGC:%d\n",afterGC);
//swap heap pointer
char *swap = heap.from;
heap.from = heap.to;
heap.to = swap;
heap.fromFree = heap.toNext;
gettimeofday(&gc_end,NULL);
gc_time = durTime(gc_start,gc_end);
printf("%d round of GC: %.5f ms, collected %d bytes garbage.\n",round,gc_time ,preGC - afterGC);
if (Control_logGc){
char buffer[100];
sprintf(buffer,"%d round of GC: %.5f ms, collected %d bytes garbage.\n",round,gc_time ,preGC - afterGC);
//addToLog(buffer);
fprintf(logfile, "%s\n", buffer);
fclose(logfile);
}
}
