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|
/*****************************************************************
|
| File Test Program 3
|
| (c) 2005-2016 Gilles Boccon-Gibod
| Author: Gilles Boccon-Gibod (bok@bok.net)
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "Ap4.h"
/*----------------------------------------------------------------------
| globals
+---------------------------------------------------------------------*/
const unsigned int BUFFER_SIZE = 8192;
const unsigned int MAX_RANDOM = 123;
typedef struct {
AP4_Position position;
unsigned int size;
unsigned char fill_value;
} BufferInfo;
const AP4_UI64 TARGET_SIZE = 0x112345678;
AP4_Array<BufferInfo> Buffers;
#define CHECK(x) \
do {\
if (!(x)) {\
fprintf(stderr, "ERROR line %d\n", __LINE__);\
return AP4_FAILURE;\
}\
} while(0)\
/*----------------------------------------------------------------------
| TestLargeFiles
+---------------------------------------------------------------------*/
static AP4_Result
TestLargeFiles(const char* filename)
{
// create enough buffers to fill up to the target size
AP4_UI64 total_size = 0;
while (total_size < TARGET_SIZE) {
unsigned int random = ((unsigned int)rand()) % MAX_RANDOM;
unsigned int buffer_size = 4096-MAX_RANDOM/2+random;
BufferInfo buffer_info;
buffer_info.position = total_size;
buffer_info.size = buffer_size;
buffer_info.fill_value = ((unsigned int)rand())%256;
Buffers.Append(buffer_info);
total_size += buffer_size;
}
unsigned char* buffer = new unsigned char[BUFFER_SIZE];
unsigned int progress = 0;
// write random buffers
printf("Writing sequential random-size buffers\n");
AP4_ByteStream* output_stream = NULL;
AP4_Result result = AP4_FileByteStream::Create(filename, AP4_FileByteStream::STREAM_MODE_WRITE, output_stream);
CHECK(result == AP4_SUCCESS);
for (unsigned int i=0; i<Buffers.ItemCount(); i++) {
unsigned int new_progress = (100*i)/Buffers.ItemCount();
if (new_progress != progress) {
printf("\rProgress: %d%%", new_progress);
fflush(stdout);
progress = new_progress;
}
BufferInfo& buffer_info = Buffers[i];
AP4_SetMemory(buffer, buffer_info.fill_value, buffer_info.size);
AP4_Position cursor;
result = output_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position);
result = output_stream->Write(buffer, buffer_info.size);
CHECK(result == AP4_SUCCESS);
if ((buffer_info.fill_value % 7) == 0) {
output_stream->Flush();
}
result = output_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position+buffer_info.size);
}
output_stream->Release();
output_stream = NULL;
// read random buffers
printf("\nReading sequential random-size buffers\n");
AP4_ByteStream* input_stream = NULL;
result = AP4_FileByteStream::Create(filename, AP4_FileByteStream::STREAM_MODE_READ, input_stream);
CHECK(result == AP4_SUCCESS);
for (unsigned int i=0; i<Buffers.ItemCount(); i++) {
unsigned int new_progress = (100*i)/Buffers.ItemCount();
if (new_progress != progress) {
printf("\rProgress: %d%%", new_progress);
fflush(stdout);
progress = new_progress;
}
BufferInfo& buffer_info = Buffers[i];
AP4_Position cursor;
result = input_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position);
result = input_stream->Read(buffer, buffer_info.size);
CHECK(result == AP4_SUCCESS);
for (unsigned int x=0; x<buffer_info.size; x++) {
CHECK(buffer[x] == buffer_info.fill_value);
}
result = input_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position+buffer_info.size);
}
input_stream->Release();
input_stream = NULL;
// read random buffers
printf("\nReading random-access random-size buffers\n");
result = AP4_FileByteStream::Create(filename, AP4_FileByteStream::STREAM_MODE_READ, input_stream);
CHECK(result == AP4_SUCCESS);
for (unsigned int i=0; i<Buffers.ItemCount()*5; i++) {
unsigned int new_progress = (100*i)/(5*Buffers.ItemCount());
if (new_progress != progress) {
printf("\rProgress: %d%%", new_progress);
fflush(stdout);
progress = new_progress;
}
unsigned int buffer_index = ((unsigned int)rand())%Buffers.ItemCount();
BufferInfo& buffer_info = Buffers[buffer_index];
result = input_stream->Seek(buffer_info.position);
CHECK(result == AP4_SUCCESS);
AP4_Position cursor;
result = input_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position);
result = input_stream->Read(buffer, buffer_info.size);
CHECK(result == AP4_SUCCESS);
for (unsigned int x=0; x<buffer_info.size; x++) {
CHECK(buffer[x] == buffer_info.fill_value);
}
result = input_stream->Tell(cursor);
CHECK(result == AP4_SUCCESS);
CHECK(cursor == buffer_info.position+buffer_info.size);
}
printf("\nSUCCESS!\n");
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| main
+---------------------------------------------------------------------*/
int
main(int argc, char** argv)
{
const char* output_filename = "largefile.bin";
if (argc > 1) {
output_filename = argv[1];
}
TestLargeFiles(output_filename);
return 0;
}
|
