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Endianness fix (not depending on the host endianness)

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This commit is contained in:
Marko Viitanen 2012-06-06 11:59:02 +03:00
parent e202eb2f91
commit aaa6f59cef
2 changed files with 21 additions and 11 deletions
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1
build/VS2010/HEVC_encoder.vcxproj
View file

@ -57,6 +57,7 @@
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<AdditionalDependencies>Ws2_32.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">

31
src/bitstream.c
View file

@ -16,6 +16,12 @@
#include <math.h>
#include <string.h>
#include <stdarg.h>
/* for hton */
#ifdef WIN32
#include <Winsock2.h>
#else
#include <net/hton.h>
#endif
#include "global.h"
#include "bitstream.h"
@ -133,6 +139,8 @@ void bitstream_put(bitstream* stream, uint32_t data, uint8_t bits)
stream->cur_bit = 0;
if(stream->cur_byte==32)
{
//We only have bytes 0..31
stream->cur_byte--;
//Flush data out
bitstream_flush(stream);
}
@ -166,6 +174,7 @@ void bitstream_flush(bitstream* stream)
* SAVE DATA TO OUTPUT
*/
int i,j;
uint32_t correct_endian;
if(stream->output)
{
if(stream->cur_byte)
@ -183,25 +192,25 @@ void bitstream_flush(bitstream* stream)
{
if(stream->cur_byte)
{
//memcpy((uint8_t*)&stream->buffer[stream->buffer_pos],(uint8_t*)stream->data,stream->cur_byte*4);
for(i = 0,j=3; i < stream->cur_byte*4; i++,j--)
/* Handle endianness issue */
for(i = 0; i < stream->cur_byte+1; i++)
{
if(j == -1) j = 3;
stream->buffer[stream->buffer_pos+i] = ((uint8_t*)stream->data)[((i>>2)<<2)+j];
/* "network" is big-endian */
correct_endian = htonl(stream->data[i]);
memcpy((uint8_t*)&stream->buffer[stream->buffer_pos],&correct_endian,4);
stream->buffer_pos += 4;
}
stream->buffer_pos += stream->cur_byte*4;
}
if(stream->cur_bit>>3)
{
memcpy((uint8_t*)&stream->buffer[stream->buffer_pos],(uint8_t*)&stream->data[stream->cur_byte],stream->cur_bit>>3);
correct_endian = htonl(stream->data[stream->cur_byte]);
memcpy((uint8_t*)&stream->buffer[stream->buffer_pos],&correct_endian,stream->cur_bit>>3);
stream->buffer_pos += stream->cur_bit>>3;
}
}
}
//Stream flushed, zero out the values
bitstream_init(stream);
//Stream flushed, zero out the values
bitstream_init(stream);
}
/*