DMO interfaces (copied/converted(c++->c) from avifile)

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8295 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 119 insertions, 0 deletions

diff --git a/loader/dmo/buffer.c b/loader/dmo/buffer.c
new file mode 100644
index 0000000000..3d53c3ce99
--- /dev/null
+++ b/loader/dmo/buffer.c
@@ -0,0 +1,119 @@
+#include "DMO_Filter.h"
+
+#include "wine/winerror.h"
+#include "wine/windef.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+struct _CMediaBuffer
+{
+    IMediaBuffer_vt* vt;
+    DECLARE_IUNKNOWN();
+    GUID interfaces[2];
+    void* mem;
+    unsigned long len;
+    unsigned long maxlen;
+    int freemem;
+};
+
+static HRESULT STDCALL CMediaBuffer_SetLength(IMediaBuffer* This,
+					      unsigned long cbLength)
+{
+    CMediaBuffer* cmb = (CMediaBuffer*) This;
+    Debug printf("CMediaBuffer_SetLength(%p) called (%ld, %ld)\n", This, cbLength, cmb->maxlen);
+    if (cbLength > cmb->maxlen)
+        return E_INVALIDARG;
+    cmb->len = cbLength;
+    return S_OK;
+}
+
+static HRESULT STDCALL CMediaBuffer_GetMaxLength(IMediaBuffer* This,
+						 /* [out] */ unsigned long *pcbMaxLength)
+{
+    CMediaBuffer* cmb = (CMediaBuffer*) This;
+    Debug printf("CMediaBuffer_GetMaxLength(%p) called -> %ld\n", This, cmb->maxlen);
+    if (!pcbMaxLength)
+	return E_POINTER;
+    *pcbMaxLength = cmb->maxlen;
+    return S_OK;
+}
+
+static HRESULT STDCALL CMediaBuffer_GetBufferAndLength(IMediaBuffer* This,
+						       /* [out] */ char** ppBuffer,
+						       /* [out] */ unsigned long* pcbLength)
+{
+    CMediaBuffer* cmb = (CMediaBuffer*) This;
+    Debug printf("CMediaBuffer_GetBufferAndLength(%p) called -> %p %ld\n", This, cmb->mem, cmb->len);
+    if (!ppBuffer && !pcbLength)
+	return E_POINTER;
+    if (ppBuffer)
+	*ppBuffer = cmb->mem;
+    if (pcbLength)
+	*pcbLength = cmb->len;
+    return S_OK;
+}
+
+static void CMediaBuffer_Destroy(CMediaBuffer* This)
+{
+    Debug printf("CMediaBuffer_Destroy(%p) called\n", This);
+    if (This->freemem)
+        free(This->mem);
+    free(This->vt);
+    free(This);
+}
+
+IMPLEMENT_IUNKNOWN(CMediaBuffer)
+
+CMediaBuffer* CMediaBufferCreate(unsigned long maxlen, void* mem,
+				 unsigned long len, int copy)
+{
+    CMediaBuffer* This = (CMediaBuffer*) malloc(sizeof(CMediaBuffer));
+
+    if (!This)
+        return NULL;
+
+    This->vt = (IMediaBuffer_vt*) malloc(sizeof(IMediaBuffer_vt));
+    if (!This->vt)
+    {
+        CMediaBuffer_Destroy(This);
+	return NULL;
+    }
+
+    This->refcount = 1;
+    This->len = len;
+    This->maxlen = maxlen;
+    This->freemem = 0;
+    This->mem = mem;
+    if (copy)
+	/* make a private copy of data */
+        This->mem = 0;
+    if (This->mem == NULL)
+    {
+	if (This->maxlen)
+	{
+	    This->mem = malloc(This->maxlen);
+	    if (!This->mem)
+	    {
+		CMediaBuffer_Destroy(This);
+		return NULL;
+	    }
+	    This->freemem = 1;
+	    if (copy)
+		memcpy(This->mem, mem, This->len);
+	}
+    }
+    This->vt->QueryInterface = CMediaBuffer_QueryInterface;
+    This->vt->AddRef = CMediaBuffer_AddRef;
+    This->vt->Release = CMediaBuffer_Release;
+
+    This->vt->SetLength = CMediaBuffer_SetLength;
+    This->vt->GetMaxLength = CMediaBuffer_GetMaxLength;
+    This->vt->GetBufferAndLength = CMediaBuffer_GetBufferAndLength;
+
+    This->interfaces[0] = IID_IUnknown;
+    This->interfaces[1] = IID_IMediaBuffer;
+
+    return This;
+}