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/* Copyright (c) 2009 The Khronos Group Inc.
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* Portions copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and/or associated documentation files (the
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* "Materials"), to deal in the Materials without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Materials, and to
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* permit persons to whom the Materials are furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Materials.
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*
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* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*/
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/*! \ingroup wfc
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* \file wfcimageprovider.c
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*
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* \brief SI image providers
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "wfcimageprovider.h"
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#include "wfcdevice.h"
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#include "wfccontext.h"
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#include "wfcstructs.h"
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#include "owfimage.h"
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#include "owfarray.h"
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#include "owfmemory.h"
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#include "owfobject.h"
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#include "owfnativestream.h"
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#include "owfdebug.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#define FIRST_IMAGEPROVIDER_HANDLE 4000
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static WFCint nextImageProviderHandle =
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FIRST_IMAGEPROVIDER_HANDLE;
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OWF_API_CALL void
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WFC_IMAGE_PROVIDER_Ctor(void* self)
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{
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WFC_IMAGE_PROVIDER* ip;
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ENTER(WFC_IMAGE_PROVIDER_Ctor);
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ip = IMAGE_PROVIDER(self);
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ip->lockedStream.image=NULL;
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ip->lockedStream.lockCount=0;
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LEAVE(WFC_IMAGE_PROVIDER_Dtor);
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}
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OWF_API_CALL void
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WFC_IMAGE_PROVIDER_Dtor(void* self)
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{
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WFC_IMAGE_PROVIDER* ip;
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ENTER(WFC_IMAGE_PROVIDER_Dtor);
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ip = IMAGE_PROVIDER(self);
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DPRINT(("ptr=%p, handle=%d", ip, ip->handle));
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owfNativeStreamDestroy(ip->streamHandle);
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DESTROY(ip->owner);
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if (ip->lockedStream.image)
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{
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if (ip->lockedStream.lockCount)
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{ /* belts and braces: unlock the read buffer when image provider is destroyed */
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DPRINT(("Native stream buffer still locked when Image Provider destroyed ptr=%p, handle=%d", ip, ip->handle));
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owfNativeStreamReleaseReadBuffer(ip->streamHandle, ip->lockedStream.buffer);
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}
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OWF_Image_Destroy(ip->lockedStream.image);
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}
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LEAVE(WFC_IMAGE_PROVIDER_Dtor);
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}
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static WFC_IMAGE_PROVIDER*
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WFC_ImageProvider_DoCreate(void* owner, /*WFC_CONTEXT* context,*/
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OWFNativeStreamType stream,
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WFC_IMAGE_PROVIDER_TYPE type)
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{
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WFC_IMAGE_PROVIDER* object;
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ENTER(WFC_ImageProvider_DoCreate);
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if (!stream)
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{
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return NULL;
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}
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object = CREATE(WFC_IMAGE_PROVIDER);
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if (!object)
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{
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return NULL;
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}
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owfNativeStreamAddReference(stream);
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object->streamHandle = stream;
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object->type = type;
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object->contentUpdated = WFC_FALSE;
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WFC_ImageProvider_LockForReading(object);
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if (object->lockedStream.image==NULL || object->lockedStream.image->data==NULL)
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{
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owfNativeStreamDestroy(stream);
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DESTROY(object);
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return NULL;
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}
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WFC_ImageProvider_Unlock(object);
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ADDREF(object->owner, owner);
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LEAVE(WFC_ImageProvider_DoCreate);
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return object;
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}
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OWF_API_CALL WFC_IMAGE_PROVIDER*
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WFC_ImageProvider_Create(void* owner, /*WFC_CONTEXT* context,*/
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OWFNativeStreamType stream,
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WFC_IMAGE_PROVIDER_TYPE type)
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{
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WFC_IMAGE_PROVIDER* object;
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ENTER(WFC_ImageProvider_Create);
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object = WFC_ImageProvider_DoCreate(owner/*context*/, stream, type);
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if (object)
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{
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object->handle = nextImageProviderHandle++;
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DPRINT(("WFC_ImageProvider_Create: attaching image provider %d to "
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"stream %p",
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object->handle, object->streamHandle));
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}
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LEAVE(WFC_ImageProvider_Create);
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return object;
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}
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OWF_API_CALL void
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WFC_ImageProvider_LockForReading(WFC_IMAGE_PROVIDER* provider)
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{
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void* pixels;
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OWFint width, height, pixelSize = 0;
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OWF_IMAGE_FORMAT imgf;
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OWFint stride;
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if (!provider) {
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DPRINT(("WFC_ImageProvider_LockForReading: provider = NULL"));
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return;
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}
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OWF_ASSERT(provider->streamHandle);
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DPRINT(("stream = %p", provider->streamHandle));
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if (!provider->lockedStream.lockCount)
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{
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DPRINT(("About to acquire & lock a read buffer"));
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/* acquire buffer */
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provider->lockedStream.buffer = owfNativeStreamAcquireReadBuffer(provider->streamHandle);
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DPRINT((" Acquired read buffer stream=%p, buffer=%d",
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provider->streamHandle, provider->lockedStream.buffer));
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/* Bind source image to pixel buffer */
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pixels = owfNativeStreamGetBufferPtr(provider->streamHandle, provider->lockedStream.buffer);
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if (provider->lockedStream.image)
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{
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OWF_Image_SetPixelBuffer(provider->lockedStream.image,pixels);
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}
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else
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{
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owfNativeStreamGetHeader(provider->streamHandle,
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&width, &height,
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&stride, &imgf, &pixelSize);
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provider->lockedStream.image = OWF_Image_Create(width, height, &imgf, pixels, stride);
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}
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}
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++provider->lockedStream.lockCount;
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DPRINT(("lock count = %d", provider->lockedStream.lockCount));
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}
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OWF_API_CALL void
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WFC_ImageProvider_Unlock(WFC_IMAGE_PROVIDER* provider)
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{
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if (!provider) {
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DPRINT(("WFC_ImageProvider_Unlock: provider = NULL"));
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return;
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}
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if (provider->lockedStream.lockCount > 0)
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{
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--provider->lockedStream.lockCount;
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DPRINT(("lock count = %d", provider->lockedStream.lockCount));
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if (!provider->lockedStream.lockCount)
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{
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DPRINT((" Releasing read buffer provider=%p, buffer=%d",
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provider->handle, provider->lockedStream.buffer));
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owfNativeStreamReleaseReadBuffer(provider->streamHandle, provider->lockedStream.buffer);
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}
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}
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}
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#ifdef __cplusplus
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}
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#endif
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