diff deps/Platinum/Source/Devices/FrameStreamer/PltFrameStream.cpp @ 0:3425707ddbf6

Initial import (hopefully this mercurial stuff works...)
author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/deps/Platinum/Source/Devices/FrameStreamer/PltFrameStream.cpp	Mon Jul 06 08:06:28 2009 -0700
@@ -0,0 +1,125 @@
+/*****************************************************************
+|
+|   Platinum - Frame Stream
+|
+| Copyright (c) 2004-2008, Plutinosoft, LLC.
+| All rights reserved.
+| http://www.plutinosoft.com
+|
+| This program 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
+| of the License, or (at your option) any later version.
+|
+| OEMs, ISVs, VARs and other distributors that combine and 
+| distribute commercially licensed software with Platinum software
+| and do not wish to distribute the source code for the commercially
+| licensed software under version 2, or (at your option) any later
+| version, of the GNU General Public License (the "GPL") must enter
+| into a commercial license agreement with Plutinosoft, LLC.
+| 
+| This program 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 this program; see the file LICENSE.txt. If not, write to
+| the Free Software Foundation, Inc., 
+| 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+| http://www.gnu.org/licenses/gpl-2.0.html
+|
+****************************************************************/
+
+/*----------------------------------------------------------------------
+|   includes
++---------------------------------------------------------------------*/
+#include "PltFrameStream.h"
+
+NPT_SET_LOCAL_LOGGER("platinum.core.framestream")
+
+/*----------------------------------------------------------------------
+|   PLT_InputFrameStream::PLT_InputFrameStream
++---------------------------------------------------------------------*/
+PLT_InputFrameStream::PLT_InputFrameStream(PLT_FrameBuffer& frame_buffer,
+                                           const char*      boundary) : 
+    m_FrameBuffer(frame_buffer),
+    m_LastFrameIndex(0),
+    m_Boundary(boundary),
+    m_Eos(false)
+{
+}
+
+/*----------------------------------------------------------------------
+|   PLT_InputFrameStream::~PLT_InputFrameStream
++---------------------------------------------------------------------*/
+PLT_InputFrameStream::~PLT_InputFrameStream()
+{
+}
+
+/*----------------------------------------------------------------------
+|   PLT_InputFrameStream::GetAvailable
++---------------------------------------------------------------------*/
+NPT_Result 
+PLT_InputFrameStream::GetAvailable(NPT_LargeSize& available) 
+{ 
+    NPT_CHECK_WARNING(m_Part.GetAvailable(available));
+
+    if (available == 0 && !m_Eos) {
+        NPT_CHECK_WARNING(FillBuffer());
+        NPT_CHECK_WARNING(m_Part.GetAvailable(available));
+    }
+
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_InputFrameStream::FillBuffer
++---------------------------------------------------------------------*/
+NPT_Result 
+PLT_InputFrameStream::FillBuffer()
+{
+    // reset memorystream
+    m_Part.SetSize(0);
+    
+    // fetch next frame
+    NPT_DataBuffer frame;
+    NPT_CHECK_WARNING(m_FrameBuffer.GetNextFrame(m_LastFrameIndex, frame));
+
+    // empty frame means we're done
+    if (frame.GetDataSize() == 0) {
+        m_Part.WriteLine("--" + m_Boundary + "--");
+        m_Eos = true;
+        return NPT_SUCCESS;
+    }
+
+    m_Part.WriteLine("--" + m_Boundary);
+    m_Part.WriteLine("Content-Type: image/jpeg");
+    m_Part.WriteLine("Content-Length: "+NPT_String::FromInteger(frame.GetDataSize()));
+    m_Part.WriteLine("");
+    m_Part.Write(frame.GetData(), frame.GetDataSize());
+    m_Part.WriteLine("");
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_InputFrameStream::Read
++---------------------------------------------------------------------*/
+NPT_Result 
+PLT_InputFrameStream::Read(void*     buffer, 
+                           NPT_Size  bytes_to_read, 
+                           NPT_Size* bytes_read /*= 0*/)
+{
+
+    if (bytes_read) *bytes_read = 0;
+
+    if (bytes_to_read == 0) {
+        return NPT_SUCCESS;
+    }
+
+    // make sure we have data
+    NPT_LargeSize available;
+    NPT_CHECK_WARNING(GetAvailable(available));
+
+    return m_Part.Read(buffer, bytes_to_read, bytes_read);
+}