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273
grd-rdp-view-creator-gen-sw.c
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273
grd-rdp-view-creator-gen-sw.c
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/*
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* Copyright (C) 2025 Pascal Nowack
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include "config.h"
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#include "grd-rdp-view-creator-gen-sw.h"
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#include "grd-damage-detector-sw.h"
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#include "grd-image-view-rgb.h"
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#include "grd-local-buffer-wrapper-rdp.h"
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#include "grd-rdp-render-state.h"
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/*
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* One buffer is needed, when encoding a frame,
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* one is needed for the current view creation,
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* one is needed for an already encoded frame,
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* that was not yet submitted to the client
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*
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* In total, this makes three needed buffers
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*/
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#define N_LOCAL_BUFFERS 3
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typedef struct
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw;
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GrdImageView *image_view;
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GrdRdpBuffer *src_buffer_new;
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GrdLocalBuffer *local_buffer_new;
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GrdLocalBuffer *local_buffer_old;
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} ViewContext;
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struct _GrdRdpViewCreatorGenSW
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{
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GrdRdpViewCreator parent;
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GrdLocalBuffer *local_buffers[N_LOCAL_BUFFERS];
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GHashTable *acquired_buffers;
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GrdDamageDetectorSw *damage_detector;
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GrdRdpBuffer *last_src_buffer;
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GrdLocalBuffer *last_local_buffer;
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ViewContext *current_view_context;
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};
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G_DEFINE_TYPE (GrdRdpViewCreatorGenSW, grd_rdp_view_creator_gen_sw,
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GRD_TYPE_RDP_VIEW_CREATOR)
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static void
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view_context_free (ViewContext *view_context);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC (ViewContext, view_context_free)
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static GrdLocalBuffer *
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acquire_local_buffer (GrdRdpViewCreatorGenSW *view_creator_gen_sw)
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{
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uint32_t i;
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for (i = 0; i < N_LOCAL_BUFFERS; ++i)
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{
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GrdLocalBuffer *local_buffer = view_creator_gen_sw->local_buffers[i];
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if (g_hash_table_contains (view_creator_gen_sw->acquired_buffers,
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local_buffer))
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continue;
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if (local_buffer == view_creator_gen_sw->last_local_buffer)
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continue;
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g_hash_table_add (view_creator_gen_sw->acquired_buffers, local_buffer);
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return local_buffer;
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}
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g_assert_not_reached ();
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return NULL;
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}
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static void
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release_local_buffer (GrdRdpViewCreatorGenSW *view_creator_gen_sw,
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GrdLocalBuffer *local_buffer)
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{
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if (!g_hash_table_remove (view_creator_gen_sw->acquired_buffers, local_buffer))
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g_assert_not_reached ();
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}
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static ViewContext *
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view_context_new (GrdRdpViewCreatorGenSW *view_creator_gen_sw,
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GrdImageView *image_view,
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GrdRdpBuffer *src_buffer_new,
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GrdRdpBuffer *src_buffer_old)
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{
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ViewContext *view_context;
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GrdLocalBufferWrapperRdp *buffer_wrapper;
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view_context = g_new0 (ViewContext, 1);
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view_context->view_creator_gen_sw = view_creator_gen_sw;
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view_context->image_view = image_view;
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view_context->src_buffer_new = src_buffer_new;
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view_context->local_buffer_new = acquire_local_buffer (view_creator_gen_sw);
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buffer_wrapper =
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GRD_LOCAL_BUFFER_WRAPPER_RDP (view_context->local_buffer_new);
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grd_local_buffer_wrapper_rdp_attach_rdp_buffer (buffer_wrapper,
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src_buffer_new);
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if (src_buffer_old &&
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src_buffer_old == view_creator_gen_sw->last_src_buffer)
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view_context->local_buffer_old = view_creator_gen_sw->last_local_buffer;
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return view_context;
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}
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static void
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view_context_free (ViewContext *view_context)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw =
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view_context->view_creator_gen_sw;
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if (view_context->local_buffer_new)
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release_local_buffer (view_creator_gen_sw, view_context->local_buffer_new);
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g_free (view_context);
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}
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static gboolean
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grd_rdp_view_creator_gen_sw_create_view (GrdRdpViewCreator *view_creator,
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GList *image_views,
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GrdRdpBuffer *src_buffer_new,
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GrdRdpBuffer *src_buffer_old,
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GError **error)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw =
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GRD_RDP_VIEW_CREATOR_GEN_SW (view_creator);
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g_assert (image_views);
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g_assert (!image_views->next);
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g_assert (!view_creator_gen_sw->current_view_context);
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view_creator_gen_sw->current_view_context =
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view_context_new (view_creator_gen_sw, image_views->data,
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src_buffer_new, src_buffer_old);
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return TRUE;
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}
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static void
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on_image_view_release (gpointer user_data,
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GrdLocalBuffer *local_buffer)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw = user_data;
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release_local_buffer (view_creator_gen_sw, local_buffer);
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}
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static GrdRdpRenderState *
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grd_rdp_view_creator_gen_sw_finish_view (GrdRdpViewCreator *view_creator,
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GError **error)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw =
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GRD_RDP_VIEW_CREATOR_GEN_SW (view_creator);
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GrdDamageDetectorSw *damage_detector = view_creator_gen_sw->damage_detector;
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g_autoptr (ViewContext) view_context = NULL;
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GrdLocalBuffer *local_buffer_new;
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GrdImageViewRGB *image_view_rgb;
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uint32_t *damage_buffer;
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uint32_t damage_buffer_length;
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view_context = g_steal_pointer (&view_creator_gen_sw->current_view_context);
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grd_damage_detector_sw_compute_damage (damage_detector,
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view_context->local_buffer_new,
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view_context->local_buffer_old);
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local_buffer_new = g_steal_pointer (&view_context->local_buffer_new);
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image_view_rgb = GRD_IMAGE_VIEW_RGB (view_context->image_view);
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view_creator_gen_sw->last_src_buffer = view_context->src_buffer_new;
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view_creator_gen_sw->last_local_buffer = local_buffer_new;
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grd_image_view_rgb_attach_local_buffer (image_view_rgb,
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local_buffer_new,
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on_image_view_release,
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view_creator_gen_sw);
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damage_buffer = grd_damage_detector_sw_get_damage_buffer (damage_detector);
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damage_buffer_length =
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grd_damage_detector_sw_get_damage_buffer_length (damage_detector);
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return grd_rdp_render_state_new (damage_buffer, NULL, damage_buffer_length);
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}
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GrdRdpViewCreatorGenSW *
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grd_rdp_view_creator_gen_sw_new (uint32_t surface_width,
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uint32_t surface_height)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw;
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uint32_t i;
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view_creator_gen_sw = g_object_new (GRD_TYPE_RDP_VIEW_CREATOR_GEN_SW, NULL);
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view_creator_gen_sw->damage_detector =
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grd_damage_detector_sw_new (surface_width, surface_height);
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for (i = 0; i < N_LOCAL_BUFFERS; ++i)
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{
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view_creator_gen_sw->local_buffers[i] =
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GRD_LOCAL_BUFFER (grd_local_buffer_wrapper_rdp_new ());
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}
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return view_creator_gen_sw;
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}
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static void
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grd_rdp_view_creator_gen_sw_dispose (GObject *object)
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{
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GrdRdpViewCreatorGenSW *view_creator_gen_sw =
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GRD_RDP_VIEW_CREATOR_GEN_SW (object);
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uint32_t i;
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if (view_creator_gen_sw->acquired_buffers)
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g_assert (g_hash_table_size (view_creator_gen_sw->acquired_buffers) == 0);
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g_assert (!view_creator_gen_sw->current_view_context);
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g_clear_object (&view_creator_gen_sw->damage_detector);
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g_clear_pointer (&view_creator_gen_sw->acquired_buffers, g_hash_table_unref);
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for (i = 0; i < N_LOCAL_BUFFERS; ++i)
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g_clear_object (&view_creator_gen_sw->local_buffers[i]);
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G_OBJECT_CLASS (grd_rdp_view_creator_gen_sw_parent_class)->dispose (object);
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}
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static void
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grd_rdp_view_creator_gen_sw_init (GrdRdpViewCreatorGenSW *view_creator_gen_sw)
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{
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view_creator_gen_sw->acquired_buffers = g_hash_table_new (NULL, NULL);
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}
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static void
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grd_rdp_view_creator_gen_sw_class_init (GrdRdpViewCreatorGenSWClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GrdRdpViewCreatorClass *view_creator_class =
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GRD_RDP_VIEW_CREATOR_CLASS (klass);
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object_class->dispose = grd_rdp_view_creator_gen_sw_dispose;
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view_creator_class->create_view = grd_rdp_view_creator_gen_sw_create_view;
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view_creator_class->finish_view = grd_rdp_view_creator_gen_sw_finish_view;
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}
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