Initial community commit

Src/Plugins/Input/in_vorbis/chainedstream_parse.cpp

@@ -0,0 +1,82 @@
+#include <windows.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <ogg/ogg.h>
+#include <vorbis/vorbisfile.h>
+
+static size_t callback_fread(void *ptr, size_t size, size_t nmemb, HANDLE hFile)
+{
+	DWORD bw = 0;
+	ReadFile(hFile,ptr,(DWORD)(size*nmemb),&bw,0);
+	return bw/size;
+}
+
+static size_t callback_write(void * ptr, size_t size, size_t nmemb, HANDLE hFile)
+{
+	DWORD bw = 0;
+	WriteFile(hFile,ptr,(DWORD)(size*nmemb),&bw,0);
+	return bw/size;
+}
+
+static int callback_fseek(HANDLE hFile, __int64 offset, int whence)
+{
+	__int64 temp = offset;
+	SetFilePointer(hFile,*(DWORD*)&temp,((long*)&temp+1),whence);
+	return 0;
+}
+
+static int callback_fclose(HANDLE f)
+{
+	return 0;
+}
+
+static __int64 callback_ftell(HANDLE hFile)
+{
+	__int64 ret=0;
+	*(DWORD*)&ret = SetFilePointer(hFile,0,((long*)&ret+1),FILE_CURRENT);
+	return ret;
+}
+
+static void* callbacks[4]=
+{
+	callback_fread,callback_fseek,callback_fclose,callback_ftell
+};
+
+namespace ogg_helper
+{
+	int num_get_tracks(HANDLE hFile/*track_indexer::callback * out,reader * r*/)
+	{
+		SetFilePointer(hFile,0,0,FILE_BEGIN);
+		OggVorbis_File l_vf;
+		memset(&l_vf,0,sizeof(l_vf));
+		if (ov_open_callbacks(hFile,&l_vf,0,0,*(ov_callbacks*)callbacks))
+		{
+			return 0;
+		}
+		int rv = l_vf.links;
+		ov_clear(&l_vf);
+		return rv;
+	}
+
+	int query_chained_stream_offset(HANDLE hFile,int idx,__int64 * out_beginning,__int64 * out_end)
+	{
+		SetFilePointer(hFile,0,0,FILE_BEGIN);
+		OggVorbis_File l_vf;
+		memset(&l_vf,0,sizeof(l_vf));
+		if (ov_open_callbacks(hFile,&l_vf,0,0,*(ov_callbacks*)callbacks))
+		{
+			return 0;
+		}
+		int retval = 0;
+		if (idx>=0 && idx<l_vf.links)
+		{
+			retval = 1;
+			*out_beginning = l_vf.offsets[idx];
+			*out_end = l_vf.offsets[idx+1];
+		}
+
+		ov_clear(&l_vf);
+		return retval;
+	}
+}