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|
/*****************************************************************
|
| AP4 - Atomix Adapters
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4AtomixAdapters.h"
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::ATX_InputStream_To_AP4_ByteStream_Adapter
+---------------------------------------------------------------------*/
ATX_InputStream_To_AP4_ByteStream_Adapter::ATX_InputStream_To_AP4_ByteStream_Adapter(ATX_InputStream* stream) :
m_Stream(stream),
m_ReferenceCount(1)
{
ATX_REFERENCE_OBJECT(stream);
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::~ATX_InputStream_To_AP4_ByteStream_Adapter
+---------------------------------------------------------------------*/
ATX_InputStream_To_AP4_ByteStream_Adapter::~ATX_InputStream_To_AP4_ByteStream_Adapter()
{
ATX_RELEASE_OBJECT(m_Stream);
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::MapResult
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::MapResult(ATX_Result result)
{
switch (result) {
case ATX_ERROR_EOS: return AP4_ERROR_EOS;
default: return result;
}
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::AddReference
+---------------------------------------------------------------------*/
void
ATX_InputStream_To_AP4_ByteStream_Adapter::AddReference()
{
++m_ReferenceCount;
}
/*----------------------------------------------------------------------
| DcfAtxToAp4StreamAdapter::Release
+---------------------------------------------------------------------*/
void
ATX_InputStream_To_AP4_ByteStream_Adapter::Release()
{
if (--m_ReferenceCount == 0) {
delete this;
}
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::ReadPartial
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::ReadPartial(void* buffer, AP4_Size bytes_to_read, AP4_Size& bytes_read)
{
ATX_Result result = ATX_InputStream_Read(m_Stream, buffer, bytes_to_read, &bytes_read);
return MapResult(result);
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::Write
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::WritePartial(const void*, AP4_Size, AP4_Size&)
{
return AP4_ERROR_NOT_SUPPORTED;
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::Seek
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::Seek(AP4_Position position)
{
return MapResult(ATX_InputStream_Seek(m_Stream, (ATX_Position)position));
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::Tell
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::Tell(AP4_Position& position)
{
return MapResult(ATX_InputStream_Tell(m_Stream, &position));
}
/*----------------------------------------------------------------------
| ATX_InputStream_To_AP4_ByteStream_Adapter::GetSize
+---------------------------------------------------------------------*/
AP4_Result
ATX_InputStream_To_AP4_ByteStream_Adapter::GetSize(AP4_LargeSize& size)
{
return MapResult(ATX_InputStream_GetSize(m_Stream, &size));
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult
+---------------------------------------------------------------------*/
static ATX_Result
AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(AP4_Result result)
{
switch (result) {
case AP4_ERROR_EOS:
return ATX_ERROR_EOS;
default:
return result;
}
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_Read
+---------------------------------------------------------------------*/
ATX_METHOD
AP4_ByteStream_To_ATX_InputStream_Adapter_Read(ATX_InputStream* _self,
ATX_Any buffer,
ATX_Size bytes_to_read,
ATX_Size* bytes_read)
{
AP4_ByteStream_To_ATX_InputStream_Adapter* self = ATX_SELF(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
AP4_Size local_read = 0;
AP4_Result result = self->source->ReadPartial(buffer, bytes_to_read, local_read);
if (bytes_read) *bytes_read = local_read;
return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_Seek
+---------------------------------------------------------------------*/
ATX_METHOD
AP4_ByteStream_To_ATX_InputStream_Adapter_Seek(ATX_InputStream* _self,
ATX_Position offset)
{
AP4_ByteStream_To_ATX_InputStream_Adapter* self = ATX_SELF(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
AP4_Result result = self->source->Seek(offset);
return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_Tell
+---------------------------------------------------------------------*/
ATX_METHOD
AP4_ByteStream_To_ATX_InputStream_Adapter_Tell(ATX_InputStream* _self,
ATX_Position* offset)
{
AP4_ByteStream_To_ATX_InputStream_Adapter* self = ATX_SELF(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
AP4_Position source_position;
AP4_Result result = self->source->Tell(source_position);
*offset = (ATX_Position)source_position;
return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_GetSize
+---------------------------------------------------------------------*/
ATX_METHOD
AP4_ByteStream_To_ATX_InputStream_Adapter_GetSize(ATX_InputStream* _self,
ATX_LargeSize* size)
{
AP4_ByteStream_To_ATX_InputStream_Adapter* self = ATX_SELF(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
AP4_Result result = self->source->GetSize(*size);
return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_GetAvailable
+---------------------------------------------------------------------*/
ATX_METHOD
AP4_ByteStream_To_ATX_InputStream_Adapter_GetAvailable(ATX_InputStream* _self,
ATX_LargeSize* available)
{
AP4_ByteStream_To_ATX_InputStream_Adapter* self = ATX_SELF(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
/* default value */
*available = 0;
AP4_LargeSize source_size = 0;
AP4_Position source_position = 0;
AP4_Result result = self->source->GetSize(source_size);
if (AP4_FAILED(result)) return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
result = self->source->Tell(source_position);
if (AP4_FAILED(result)) return AP4_ByteStream_To_ATX_InputStream_Adapter_MapResult(result);
*available = (ATX_LargeSize)(source_size-source_position);
return ATX_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_Destroy
+---------------------------------------------------------------------*/
static ATX_Result
AP4_ByteStream_To_ATX_InputStream_Adapter_Destroy(AP4_ByteStream_To_ATX_InputStream_Adapter* self)
{
/* release the reference to the source */
if (self->source) self->source->Release();
ATX_FreeMemory(self);
return ATX_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_GetInterface
+---------------------------------------------------------------------*/
ATX_BEGIN_GET_INTERFACE_IMPLEMENTATION(AP4_ByteStream_To_ATX_InputStream_Adapter)
ATX_GET_INTERFACE_ACCEPT(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream)
ATX_GET_INTERFACE_ACCEPT(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_Referenceable)
ATX_END_GET_INTERFACE_IMPLEMENTATION
/*----------------------------------------------------------------------
| ATX_InputStream interface
+---------------------------------------------------------------------*/
ATX_BEGIN_INTERFACE_MAP(AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream)
AP4_ByteStream_To_ATX_InputStream_Adapter_Read,
AP4_ByteStream_To_ATX_InputStream_Adapter_Seek,
AP4_ByteStream_To_ATX_InputStream_Adapter_Tell,
AP4_ByteStream_To_ATX_InputStream_Adapter_GetSize,
AP4_ByteStream_To_ATX_InputStream_Adapter_GetAvailable
ATX_END_INTERFACE_MAP
/*----------------------------------------------------------------------
| ATX_Referenceable interface
+---------------------------------------------------------------------*/
ATX_IMPLEMENT_REFERENCEABLE_INTERFACE(AP4_ByteStream_To_ATX_InputStream_Adapter, reference_count)
/*----------------------------------------------------------------------
| AP4_ByteStream_To_ATX_InputStream_Adapter_Create
+---------------------------------------------------------------------*/
ATX_Result
AP4_ByteStream_To_ATX_InputStream_Adapter_Create(AP4_ByteStream* source_stream,
ATX_InputStream** object)
{
/* check parameters */
if (source_stream == NULL || object == NULL) {
return ATX_ERROR_INVALID_PARAMETERS;
}
/* allocate new object */
AP4_ByteStream_To_ATX_InputStream_Adapter* stream;
stream = (AP4_ByteStream_To_ATX_InputStream_Adapter*)ATX_AllocateZeroMemory(sizeof(AP4_ByteStream_To_ATX_InputStream_Adapter));
if (stream == NULL) {
*object = NULL;
return ATX_ERROR_OUT_OF_MEMORY;
}
/* initialize the object */
stream->reference_count = 1;
/* keep a reference to the source stream */
stream->source = source_stream;
stream->source->AddReference();
/* setup the interfaces */
ATX_SET_INTERFACE(stream, AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_InputStream);
ATX_SET_INTERFACE(stream, AP4_ByteStream_To_ATX_InputStream_Adapter, ATX_Referenceable);
*object = &ATX_BASE(stream, ATX_InputStream);
return ATX_SUCCESS;
}
|
