mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dd3df4589d
In order to be readable, the meaningless 'flags' is renamed to surface_allocation_flags, which is clearer.
207 lines
6.1 KiB
C
207 lines
6.1 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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GstVideoInfo video_info;
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guint alloc_flags;
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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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guint surface_allocation_flags)
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{
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const GstVideoFormat format = GST_VIDEO_INFO_FORMAT (vip);
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pool->video_info = *vip;
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pool->alloc_flags = surface_allocation_flags;
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if (format == GST_VIDEO_FORMAT_UNKNOWN)
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return FALSE;
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if (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 (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 (GST_VIDEO_INFO_FORMAT (&pool->video_info) != GST_VIDEO_FORMAT_ENCODED) {
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GstVaapiSurface *const surface =
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gst_vaapi_surface_new_full (base_pool->display, &pool->video_info,
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pool->alloc_flags);
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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, GST_VIDEO_INFO_WIDTH (&pool->video_info),
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GST_VIDEO_INFO_HEIGHT (&pool->video_info));
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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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,
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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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* @format: a #GstVideoFormat
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* @width: the desired width, in pixels
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* @height: the desired height, in pixels
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*
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* Creates a new #GstVaapiVideoPool of #GstVaapiSurface with the specified
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* format and dimensions. If @format is GST_VIDEO_FORMAT_ENCODED, then
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* surfaces with best "native" format would be created. Typically, this is
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* NV12 format, but this is implementation (driver) defined.
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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, GstVideoFormat format,
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guint width, guint height)
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{
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GstVideoInfo vi;
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g_return_val_if_fail (display != NULL, NULL);
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g_return_val_if_fail (width > 0, NULL);
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g_return_val_if_fail (height > 0, NULL);
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gst_video_info_set_format (&vi, format, width, height);
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return gst_vaapi_surface_pool_new_full (display, &vi, 0);
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}
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/**
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* gst_vaapi_surface_pool_new_full:
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* @display: a #GstVaapiDisplay
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* @vip: a #GstVideoInfo
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* @surface_allocation_flags: (optional) allocation flags
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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_full (GstVaapiDisplay * display,
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const GstVideoInfo * vip, guint surface_allocation_flags)
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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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surface_allocation_flags))
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goto error;
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return pool;
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/* ERRORS */
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error:
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{
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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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}
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/**
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* gst_vaapi_surface_pool_new_with_chroma_type:
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* @display: a #GstVaapiDisplay
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* @chroma_type: a #GstVaapiChromatype
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* @width: the desired width, in pixels
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* @height: the desired height, in pixels
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*
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* Creates a new #GstVaapiVideoPool of #GstVaapiSurface with the specified
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* chroma type and dimensions. The underlying format of the surfaces is
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* implementation (driver) defined.
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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_with_chroma_type (GstVaapiDisplay * display,
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GstVaapiChromaType chroma_type, guint width, guint height)
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{
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GstVaapiVideoPool *pool;
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GstVideoInfo vi;
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g_return_val_if_fail (display != NULL, NULL);
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g_return_val_if_fail (chroma_type > 0, NULL);
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g_return_val_if_fail (width > 0, NULL);
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g_return_val_if_fail (height > 0, NULL);
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gst_video_info_set_format (&vi, GST_VIDEO_FORMAT_ENCODED, width, height);
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pool = gst_vaapi_surface_pool_new_full (display, &vi, 0);
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if (!pool)
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return NULL;
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GST_VAAPI_SURFACE_POOL (pool)->chroma_type = chroma_type;
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return pool;
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}
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