mirror of
https://github.com/mpv-player/mpv
synced 2024-12-29 02:22:19 +00:00
b63759b175
These functions return void*, which is compatible with any pointer, so there is no need for casts. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30744 b3059339-0415-0410-9bf9-f77b7e298cf2
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
#include "DMO_Filter.h"
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#include "loader/wine/winerror.h"
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#include "loader/wine/windef.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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struct CMediaBuffer
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{
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IMediaBuffer_vt* vt;
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DECLARE_IUNKNOWN();
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GUID interfaces[2];
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void* mem;
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unsigned long len;
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unsigned long maxlen;
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int freemem;
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};
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static HRESULT STDCALL CMediaBuffer_SetLength(IMediaBuffer* This,
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unsigned long cbLength)
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{
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CMediaBuffer* cmb = (CMediaBuffer*) This;
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Debug printf("CMediaBuffer_SetLength(%p) called (%ld, %ld)\n", This, cbLength, cmb->maxlen);
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if (cbLength > cmb->maxlen)
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return E_INVALIDARG;
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cmb->len = cbLength;
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return S_OK;
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}
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static HRESULT STDCALL CMediaBuffer_GetMaxLength(IMediaBuffer* This,
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/* [out] */ unsigned long *pcbMaxLength)
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{
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CMediaBuffer* cmb = (CMediaBuffer*) This;
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Debug printf("CMediaBuffer_GetMaxLength(%p) called -> %ld\n", This, cmb->maxlen);
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if (!pcbMaxLength)
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return E_POINTER;
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*pcbMaxLength = cmb->maxlen;
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return S_OK;
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}
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static HRESULT STDCALL CMediaBuffer_GetBufferAndLength(IMediaBuffer* This,
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/* [out] */ char** ppBuffer,
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/* [out] */ unsigned long* pcbLength)
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{
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CMediaBuffer* cmb = (CMediaBuffer*) This;
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Debug printf("CMediaBuffer_GetBufferAndLength(%p) called -> %p %ld\n", This, cmb->mem, cmb->len);
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if (!ppBuffer && !pcbLength)
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return E_POINTER;
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if (ppBuffer)
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*ppBuffer = cmb->mem;
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if (pcbLength)
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*pcbLength = cmb->len;
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return S_OK;
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}
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static void CMediaBuffer_Destroy(CMediaBuffer* This)
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{
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Debug printf("CMediaBuffer_Destroy(%p) called\n", This);
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if (This->freemem)
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free(This->mem);
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free(This->vt);
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free(This);
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}
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IMPLEMENT_IUNKNOWN(CMediaBuffer)
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CMediaBuffer* CMediaBufferCreate(unsigned long maxlen, void* mem,
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unsigned long len, int copy)
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{
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CMediaBuffer* This = malloc(sizeof(CMediaBuffer));
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if (!This)
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return NULL;
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This->vt = malloc(sizeof(IMediaBuffer_vt));
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if (!This->vt)
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{
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CMediaBuffer_Destroy(This);
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return NULL;
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}
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This->refcount = 1;
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This->len = len;
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This->maxlen = maxlen;
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This->freemem = 0;
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This->mem = mem;
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if (copy)
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/* make a private copy of data */
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This->mem = 0;
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if (This->mem == NULL)
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{
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if (This->maxlen)
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{
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This->mem = malloc(This->maxlen);
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if (!This->mem)
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{
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CMediaBuffer_Destroy(This);
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return NULL;
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}
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This->freemem = 1;
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if (copy)
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memcpy(This->mem, mem, This->len);
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}
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}
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This->vt->QueryInterface = CMediaBuffer_QueryInterface;
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This->vt->AddRef = CMediaBuffer_AddRef;
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This->vt->Release = CMediaBuffer_Release;
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This->vt->SetLength = CMediaBuffer_SetLength;
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This->vt->GetMaxLength = CMediaBuffer_GetMaxLength;
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This->vt->GetBufferAndLength = CMediaBuffer_GetBufferAndLength;
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This->interfaces[0] = IID_IUnknown;
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This->interfaces[1] = IID_IMediaBuffer;
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return This;
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}
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