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134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/*
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* gstvaapisurfacepool.c - Gst VA surface pool
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*
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* Copyright (C) 2010-2011 Splitted-Desktop Systems
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* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
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* Copyright (C) 2012-2013 Intel Corporation
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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/**
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* SECTION:gstvaapisurfacepool
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* @short_description: VA surface pool
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*/
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#include "sysdeps.h"
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#include "gstvaapisurfacepool.h"
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#include "gstvaapivideopool_priv.h"
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#define DEBUG 1
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#include "gstvaapidebug.h"
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/**
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* GstVaapiSurfacePool:
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*
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* A pool of lazily allocated #GstVaapiSurface objects.
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*/
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struct _GstVaapiSurfacePool
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{
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/*< private >*/
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GstVaapiVideoPool parent_instance;
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GstVaapiChromaType chroma_type;
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GstVideoFormat format;
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guint width;
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guint height;
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};
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static gboolean
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surface_pool_init (GstVaapiSurfacePool * pool, const GstVideoInfo * vip)
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{
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pool->format = GST_VIDEO_INFO_FORMAT (vip);
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pool->width = GST_VIDEO_INFO_WIDTH (vip);
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pool->height = GST_VIDEO_INFO_HEIGHT (vip);
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if (pool->format == GST_VIDEO_FORMAT_UNKNOWN)
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return FALSE;
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if (pool->format == GST_VIDEO_FORMAT_ENCODED)
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pool->chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
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else
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pool->chroma_type = gst_vaapi_video_format_get_chroma_type (pool->format);
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if (!pool->chroma_type)
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return FALSE;
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return TRUE;
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}
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static gpointer
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gst_vaapi_surface_pool_alloc_object (GstVaapiVideoPool * base_pool)
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{
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GstVaapiSurfacePool *const pool = GST_VAAPI_SURFACE_POOL (base_pool);
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/* Try to allocate a surface with an explicit pixel format first */
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if (pool->format != GST_VIDEO_FORMAT_ENCODED) {
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GstVaapiSurface *const surface =
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gst_vaapi_surface_new_with_format (base_pool->display, pool->format,
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pool->width, pool->height);
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if (surface)
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return surface;
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}
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/* Otherwise, fallback to the original interface, based on chroma format */
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return gst_vaapi_surface_new (base_pool->display,
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pool->chroma_type, pool->width, pool->height);
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}
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static inline const GstVaapiMiniObjectClass *
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gst_vaapi_surface_pool_class (void)
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{
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static const GstVaapiVideoPoolClass GstVaapiSurfacePoolClass = {
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{sizeof (GstVaapiSurfacePool),
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(GDestroyNotify) gst_vaapi_video_pool_finalize},
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.alloc_object = gst_vaapi_surface_pool_alloc_object
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};
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return GST_VAAPI_MINI_OBJECT_CLASS (&GstVaapiSurfacePoolClass);
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}
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/**
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* gst_vaapi_surface_pool_new:
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* @display: a #GstVaapiDisplay
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* @vip: a #GstVideoInfo
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*
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* Creates a new #GstVaapiVideoPool of #GstVaapiSurface with the
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* specified format and dimensions in @vip.
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*
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* Return value: the newly allocated #GstVaapiVideoPool
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*/
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GstVaapiVideoPool *
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gst_vaapi_surface_pool_new (GstVaapiDisplay * display, const GstVideoInfo * vip)
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{
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GstVaapiVideoPool *pool;
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g_return_val_if_fail (display != NULL, NULL);
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g_return_val_if_fail (vip != NULL, NULL);
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pool = (GstVaapiVideoPool *)
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gst_vaapi_mini_object_new (gst_vaapi_surface_pool_class ());
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if (!pool)
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return NULL;
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gst_vaapi_video_pool_init (pool, display,
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GST_VAAPI_VIDEO_POOL_OBJECT_TYPE_SURFACE);
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if (!surface_pool_init (GST_VAAPI_SURFACE_POOL (pool), vip))
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goto error;
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return pool;
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error:
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gst_vaapi_mini_object_unref (GST_VAAPI_MINI_OBJECT (pool));
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return NULL;
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}
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