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src/gallium/frontends/mediafoundation/dpb_buffer_manager.cpp

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+/*
+ * Copyright © Microsoft Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "dpb_buffer_manager.h"
+#include "frontend/winsys_handle.h"
+#include "gallium/drivers/d3d12/d3d12_interop_public.h"
+#include "vl/vl_video_buffer.h"
+
+#include "wpptrace.h"
+
+#include "dpb_buffer_manager.tmh"
+
+
+
+// retrieve a buffer from the pool
+struct pipe_video_buffer *
+dpb_buffer_manager::get_fresh_dpb_buffer()
+{
+   for( auto &entry : m_pool )
+   {
+      if( !entry.used )
+      {
+         entry.used = true;
+         return entry.buffer;
+      }
+   }
+
+   MFE_ERROR( "[dx12 hmft 0x%p] failed to find a free buffer", m_logId );
+   assert( false );   // Did not find an unused buffer
+   return NULL;
+}
+
+// release a buffer back to the pool
+void
+dpb_buffer_manager::release_dpb_buffer( struct pipe_video_buffer *target )
+{
+   for( auto &entry : m_pool )
+   {
+      if( entry.buffer == target )
+      {
+         entry.used = false;
+         break;
+      }
+   }
+}
+
+dpb_buffer_manager::dpb_buffer_manager( void *logId,
+                                        struct pipe_video_codec *codec,
+                                        unsigned width,
+                                        unsigned height,
+                                        enum pipe_format buffer_format,
+                                        unsigned pool_size,
+                                        HRESULT &hr )
+   : m_logId( logId ), m_codec( codec ), m_pool( pool_size, { NULL, false } )
+{
+   m_template.width = width;
+   m_template.height = height;
+   m_template.buffer_format = buffer_format;
+
+   if( codec->context->screen->get_video_param( codec->context->screen,
+                                                codec->profile,
+                                                PIPE_VIDEO_ENTRYPOINT_ENCODE,
+                                                PIPE_VIDEO_CAP_ENC_READABLE_RECONSTRUCTED_PICTURE ) != 0 )
+   {
+      m_template.bind = PIPE_BIND_SHARED |         // Indicate we want shared resource capabilities
+                        PIPE_BIND_RENDER_TARGET;   // This is also required for opening shared resources in D3D11
+   }
+
+   for( auto &entry : m_pool )
+   {
+      entry.buffer = m_codec->create_dpb_buffer( m_codec, NULL, &m_template );
+      if( !entry.buffer )
+      {
+         MFE_ERROR( "[dx12 hmft 0x%p] create_dpb_buffer failed", m_logId );
+         assert( false );
+         hr = E_FAIL;
+         break;
+      }
+   }
+
+   if( FAILED( hr ) )
+   {
+      for( auto &entry : m_pool )
+      {
+         if( entry.buffer )
+         {
+            entry.buffer->destroy( entry.buffer );
+         }
+      }
+   }
+}
+
+dpb_buffer_manager::~dpb_buffer_manager()
+{
+   for( auto &entry : m_pool )
+   {
+      if( entry.buffer )
+      {
+         entry.buffer->destroy( entry.buffer );
+      }
+   }
+}