static DFBResult
Construct( IDirectFBImageProvider *thiz,
... )
{
DFBResult ret = DFB_FAILURE;
IDirectFBDataBuffer *buffer;
CoreDFB *core;
va_list tag;
DIRECT_ALLOCATE_INTERFACE_DATA(thiz, IDirectFBImageProvider_MPEG2)
va_start( tag, thiz );
buffer = va_arg( tag, IDirectFBDataBuffer * );
core = va_arg( tag, CoreDFB * );
va_end( tag );
data->base.ref = 1;
data->base.buffer = buffer;
data->core = core;
/* Increase the data buffer reference counter. */
buffer->AddRef( buffer );
/* Initialize mpeg2 decoding. */
data->dec = MPEG2_Init( mpeg2_read_func, buffer, &data->width, &data->height );
if (!data->dec)
goto error;
data->stage = STAGE_INFO;
/* Allocate image data. */
data->image = D_MALLOC( data->width * data->height * 4 );
if (!data->image)
goto error;
data->stage = STAGE_IMAGE;
data->base.Destruct = IDirectFBImageProvider_MPEG2_Destruct;
thiz->RenderTo = IDirectFBImageProvider_MPEG2_RenderTo;
thiz->SetRenderCallback = IDirectFBImageProvider_MPEG2_SetRenderCallback;
thiz->GetImageDescription = IDirectFBImageProvider_MPEG2_GetImageDescription;
thiz->GetSurfaceDescription =
IDirectFBImageProvider_MPEG2_GetSurfaceDescription;
return DFB_OK;
error:
if (data->dec)
MPEG2_Close(data->dec);
buffer->Release( buffer );
DIRECT_DEALLOCATE_INTERFACE(thiz);
return ret;
}
DFBResult
ICore_Real::CreateImageProvider(
u32 buffer_call,
u32 *ret_call
)
{
DFBResult ret;
IDirectFBDataBuffer *buffer;
IDirectFBImageProvider *provider;
ImageProviderDispatch *dispatch;
D_DEBUG_AT( DirectFB_CoreDFB, "ICore_Real::%s()\n", __FUNCTION__ );
D_MAGIC_ASSERT( obj, CoreDFB );
D_ASSERT( ret_call != NULL );
DIRECT_ALLOCATE_INTERFACE( buffer, IDirectFBDataBuffer );
if (!buffer)
return (DFBResult) D_OOM();
/* Construct data buffer client */
ret = IDirectFBDataBuffer_Client_Construct( buffer, core, buffer_call );
if (ret)
return ret;
/* Create image provider */
ret = buffer->CreateImageProvider( buffer, &provider );
if (ret) {
buffer->Release( buffer );
return ret;
}
/* Create dispatch object */
ret = ImageProviderDispatch_Create( idirectfb_singleton, buffer, provider, &dispatch );
if (ret) {
provider->Release( provider );
buffer->Release( buffer );
return ret;
}
*ret_call = dispatch->call.call_id;
return DFB_OK;
}
static DFBResult
Construct( IDirectFBImageProvider *thiz,
... )
{
IDirectFBDataBuffer *buffer;
CoreDFB *core;
va_list tag;
DIRECT_ALLOCATE_INTERFACE_DATA(thiz, IDirectFBImageProvider_GIF)
va_start( tag, thiz );
buffer = va_arg( tag, IDirectFBDataBuffer * );
core = va_arg( tag, CoreDFB * );
va_end( tag );
data->base.ref = 1;
data->base.buffer = buffer;
data->base.core = core;
buffer->AddRef( buffer );
data->GrayScale = -1;
data->transparent = -1;
data->delayTime = -1;
data->image = ReadGIF( data, 1, &data->image_width, &data->image_height,
&data->image_transparency, &data->image_colorkey,
true, false );
buffer->Release( buffer );
data->base.buffer = NULL;
if (!data->image ||
(data->image_height == 0) ||
(data->image_width == 0) ) {
DIRECT_DEALLOCATE_INTERFACE( thiz );
return DFB_FAILURE;
}
data->base.Destruct = IDirectFBImageProvider_GIF_Destruct;
thiz->RenderTo = IDirectFBImageProvider_GIF_RenderTo;
thiz->GetImageDescription = IDirectFBImageProvider_GIF_GetImageDescription;
thiz->GetSurfaceDescription =
IDirectFBImageProvider_GIF_GetSurfaceDescription;
return DFB_OK;
}
static DFBResult
Construct( IDirectFBImageProvider *thiz,
... )
{
DFBResult ret = DFB_FAILURE;
IDirectFBDataBuffer *buffer;
CoreDFB *core;
va_list tag;
DIRECT_ALLOCATE_INTERFACE_DATA(thiz, IDirectFBImageProvider_PNG)
va_start( tag, thiz );
buffer = va_arg( tag, IDirectFBDataBuffer * );
core = va_arg( tag, CoreDFB * );
va_end( tag );
data->ref = 1;
data->buffer = buffer;
data->core = core;
/* Increase the data buffer reference counter. */
buffer->AddRef( buffer );
/* Create the PNG read handle. */
data->png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL );
if (!data->png_ptr)
goto error;
if (setjmp( data->png_ptr->jmpbuf )) {
D_ERROR( "ImageProvider/PNG: Error reading header!\n" );
goto error;
}
/* Create the PNG info handle. */
data->info_ptr = png_create_info_struct( data->png_ptr );
if (!data->info_ptr)
goto error;
/* Setup progressive image loading. */
png_set_progressive_read_fn( data->png_ptr, data,
png_info_callback,
png_row_callback,
png_end_callback );
/* Read until info callback is called. */
ret = push_data_until_stage( data, STAGE_INFO, 64 );
if (ret)
goto error;
thiz->AddRef = IDirectFBImageProvider_PNG_AddRef;
thiz->Release = IDirectFBImageProvider_PNG_Release;
thiz->RenderTo = IDirectFBImageProvider_PNG_RenderTo;
thiz->SetRenderCallback = IDirectFBImageProvider_PNG_SetRenderCallback;
thiz->GetImageDescription = IDirectFBImageProvider_PNG_GetImageDescription;
thiz->GetSurfaceDescription = IDirectFBImageProvider_PNG_GetSurfaceDescription;
return DFB_OK;
error:
if (data->png_ptr)
png_destroy_read_struct( &data->png_ptr, &data->info_ptr, NULL );
buffer->Release( buffer );
if (data->image)
D_FREE( data->image );
DIRECT_DEALLOCATE_INTERFACE(thiz);
return ret;
}
