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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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libs: add a vaapi blend class
Support for the VA-API VPP blend functions.
This commit is contained in:
U. Artie Eoff
Víctor Manuel Jáquez Leal
parent
894c1da6c7
commit
b76c0a0caf
3 changed files with 436 additions and 0 deletions
369
gst-libs/gst/vaapi/gstvaapiblend.c
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369
gst-libs/gst/vaapi/gstvaapiblend.c
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@ -0,0 +1,369 @@
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/*
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* gstvaapiblend.c - Video processing blend
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*
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* Copyright (C) 2019 Intel Corporation
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* Author: U. Artie Eoff <ullysses.a.eoff@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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#include "sysdeps.h"
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#include "gstvaapicompat.h"
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#include "gstvaapiblend.h"
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#include "gstvaapiutils.h"
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#include "gstvaapivalue.h"
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#include "gstvaapidisplay_priv.h"
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#include "gstvaapisurface_priv.h"
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struct _GstVaapiBlend
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{
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GstObject parent_instance;
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GstVaapiDisplay *display;
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VAConfigID va_config;
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VAContextID va_context;
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guint32 flags;
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};
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typedef struct _GstVaapiBlendClass GstVaapiBlendClass;
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struct _GstVaapiBlendClass
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{
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GstObjectClass parent_class;
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};
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GST_DEBUG_CATEGORY_STATIC (gst_debug_vaapi_blend);
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#ifndef GST_DISABLE_GST_DEBUG
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#define GST_CAT_DEFAULT gst_debug_vaapi_blend
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#else
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#define GST_CAT_DEFAULT NULL
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#endif
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G_DEFINE_TYPE_WITH_CODE (GstVaapiBlend, gst_vaapi_blend, GST_TYPE_OBJECT,
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GST_DEBUG_CATEGORY_INIT (gst_debug_vaapi_blend, "vaapiblend", 0,
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"VA-API Blend"));
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enum
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{
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PROP_DISPLAY = 1,
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};
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static void
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gst_vaapi_blend_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVaapiBlend *const blend = GST_VAAPI_BLEND (object);
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switch (property_id) {
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case PROP_DISPLAY:{
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GstVaapiDisplay *display = g_value_get_object (value);;
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if (display) {
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if (GST_VAAPI_DISPLAY_HAS_VPP (display)) {
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blend->display = gst_object_ref (display);
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} else {
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GST_WARNING_OBJECT (blend, "GstVaapiDisplay doesn't support VPP");
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}
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}
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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gst_vaapi_blend_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstVaapiBlend *const blend = GST_VAAPI_BLEND (object);
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switch (property_id) {
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case PROP_DISPLAY:
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g_value_set_object (value, blend->display);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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gst_vaapi_blend_finalize (GObject * object)
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{
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GstVaapiBlend *const blend = GST_VAAPI_BLEND (object);
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GST_VAAPI_DISPLAY_LOCK (blend->display);
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if (blend->va_context != VA_INVALID_ID) {
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vaDestroyContext (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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blend->va_context);
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blend->va_context = VA_INVALID_ID;
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}
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if (blend->va_config != VA_INVALID_ID) {
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vaDestroyConfig (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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blend->va_config);
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blend->va_config = VA_INVALID_ID;
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}
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GST_VAAPI_DISPLAY_UNLOCK (blend->display);
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gst_vaapi_display_replace (&blend->display, NULL);
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G_OBJECT_CLASS (gst_vaapi_blend_parent_class)->finalize (object);
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}
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static void
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gst_vaapi_blend_class_init (GstVaapiBlendClass * klass)
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{
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GObjectClass *const object_class = G_OBJECT_CLASS (klass);
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object_class->set_property = gst_vaapi_blend_set_property;
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object_class->get_property = gst_vaapi_blend_get_property;
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object_class->finalize = gst_vaapi_blend_finalize;
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g_object_class_install_property (object_class, PROP_DISPLAY,
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g_param_spec_object ("display", "Gst VA-API Display",
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"The VA-API display object to use", GST_TYPE_VAAPI_DISPLAY,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_NAME));
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}
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static void
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gst_vaapi_blend_init (GstVaapiBlend * blend)
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{
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blend->display = NULL;
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blend->va_config = VA_INVALID_ID;
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blend->va_context = VA_INVALID_ID;
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blend->flags = 0;
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}
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static gboolean
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gst_vaapi_blend_initialize (GstVaapiBlend * blend)
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{
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VAStatus status;
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VAProcPipelineCaps pipeline_caps = { 0, };
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if (!blend->display)
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return FALSE;
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status = vaCreateConfig (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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VAProfileNone, VAEntrypointVideoProc, NULL, 0, &blend->va_config);
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if (!vaapi_check_status (status, "vaCreateConfig() [VPP]"))
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return FALSE;
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status = vaCreateContext (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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blend->va_config, 0, 0, 0, NULL, 0, &blend->va_context);
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if (!vaapi_check_status (status, "vaCreateContext() [VPP]"))
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return FALSE;
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#if VA_CHECK_VERSION(1,1,0)
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status =
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vaQueryVideoProcPipelineCaps (GST_VAAPI_DISPLAY_VADISPLAY
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(blend->display), blend->va_context, NULL, 0, &pipeline_caps);
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if (vaapi_check_status (status, "vaQueryVideoProcPipelineCaps()"))
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blend->flags = pipeline_caps.blend_flags;
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#endif
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if (!(blend->flags & VA_BLEND_GLOBAL_ALPHA)) {
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GST_WARNING_OBJECT (blend, "VPP does not support global alpha blending");
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return FALSE;
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}
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return TRUE;
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}
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GstVaapiBlend *
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gst_vaapi_blend_new (GstVaapiDisplay * display)
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{
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GstVaapiBlend *blend = g_object_new (GST_TYPE_VAAPI_BLEND,
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"display", display, NULL);
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if (!gst_vaapi_blend_initialize (blend)) {
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gst_object_unref (blend);
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blend = NULL;
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}
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return blend;
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}
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void
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gst_vaapi_blend_replace (GstVaapiBlend ** old_blend_ptr,
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GstVaapiBlend * new_blend)
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{
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g_return_if_fail (old_blend_ptr != NULL);
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gst_object_replace ((GstObject **) old_blend_ptr, GST_OBJECT (new_blend));
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}
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/**
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* gst_vaapi_blend_process_begin:
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* @blend: a #GstVaapiBlend
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* @surface: the #GstVaapiSurface output target
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*
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* Locks the VA display and prepares the VA processing pipeline for rendering.
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*
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* If this function fails, then the VA display is unlocked before returning.
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*
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* If this function succeeds, it must be paired with a call to
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* #gst_vaapi_blend_process_end to ensure the VA processing pipeline is
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* finalized and the VA display is unlocked.
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*
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* Returns: %TRUE if successful, %FALSE otherwise.
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*/
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gboolean
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gst_vaapi_blend_process_begin (GstVaapiBlend * blend, GstVaapiSurface * surface)
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{
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VAStatus va_status;
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g_return_val_if_fail (blend != NULL, FALSE);
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g_return_val_if_fail (surface != NULL, FALSE);
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GST_VAAPI_DISPLAY_LOCK (blend->display);
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va_status = vaBeginPicture (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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blend->va_context, GST_VAAPI_OBJECT_ID (surface));
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if (!vaapi_check_status (va_status, "vaBeginPicture()")) {
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GST_VAAPI_DISPLAY_UNLOCK (blend->display);
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return FALSE;
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}
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return TRUE;
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}
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/**
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* gst_vaapi_blend_process_render:
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* @blend: a #GstVaapiBlend
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* @surface: the source #GstVaapiSurface to send to the VA processing pipeline
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* for rendering.
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* @crop_rect: the @surface crop extents to process for rendering.
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* @target_rect: the extents for which the @surface is rendered within the
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* output surface.
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* @alpha: the alpha value in the range 0.0 to 1.0, inclusive, for blending
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* with the output surface background or with previously rendered surfaces.
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*
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* Renders the @surface in the currently active VA processing pipeline.
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*
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* This function must only be called after a successful call to
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* #gst_vaapi_blend_process_begin and before calling
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* #gst_vaapi_process_end.
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*
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* Returns: %TRUE if successful, %FALSE otherwise.
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*/
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gboolean
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gst_vaapi_blend_process_render (GstVaapiBlend * blend,
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const GstVaapiSurface * surface, const GstVaapiRectangle * crop_rect,
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const GstVaapiRectangle * target_rect, gdouble alpha)
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{
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VADisplay va_display;
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VAStatus va_status;
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VAProcPipelineParameterBuffer *param = NULL;
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VABufferID id = VA_INVALID_ID;
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VARectangle src_rect = { 0, }, dst_rect = {
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0,};
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#if VA_CHECK_VERSION(1,1,0)
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VABlendState blend_state;
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#endif
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g_return_val_if_fail (blend != NULL, FALSE);
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g_return_val_if_fail (surface != NULL, FALSE);
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va_display = GST_VAAPI_DISPLAY_VADISPLAY (blend->display);
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/* Build surface region (source) */
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src_rect.width = GST_VAAPI_SURFACE_WIDTH (surface);
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src_rect.height = GST_VAAPI_SURFACE_HEIGHT (surface);
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if (crop_rect) {
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if ((crop_rect->x + crop_rect->width > src_rect.width) ||
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(crop_rect->y + crop_rect->height > src_rect.height))
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return FALSE;
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src_rect.x = crop_rect->x;
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src_rect.y = crop_rect->y;
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src_rect.width = crop_rect->width;
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src_rect.height = crop_rect->height;
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}
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/* Build output region (target) */
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dst_rect.width = src_rect.width;
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dst_rect.height = src_rect.height;
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if (target_rect) {
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dst_rect.x = target_rect->x;
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dst_rect.y = target_rect->y;
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dst_rect.width = target_rect->width;
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dst_rect.height = target_rect->height;
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}
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if (!vaapi_create_buffer (va_display, blend->va_context,
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VAProcPipelineParameterBufferType, sizeof (*param), NULL, &id,
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(gpointer *) & param))
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return FALSE;
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memset (param, 0, sizeof (*param));
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param->surface = GST_VAAPI_OBJECT_ID (surface);
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param->surface_region = &src_rect;
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param->output_region = &dst_rect;
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param->output_background_color = 0xff000000;
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#if VA_CHECK_VERSION(1,1,0)
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blend_state.flags = VA_BLEND_GLOBAL_ALPHA;
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blend_state.global_alpha = alpha;
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param->blend_state = &blend_state;
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#endif
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vaapi_unmap_buffer (va_display, id, NULL);
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va_status = vaRenderPicture (va_display, blend->va_context, &id, 1);
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if (!vaapi_check_status (va_status, "vaRenderPicture()")) {
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vaapi_destroy_buffer (va_display, &id);
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return FALSE;
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}
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vaapi_destroy_buffer (va_display, &id);
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return TRUE;
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}
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/**
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* gst_vaapi_blend_process_end:
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* @blend: a #GstVaapiBlend
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*
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* Finalizes all pending render operations in the active VA processing pipeline
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* and unlocks the VA display.
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*
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* This function must always be paired with a call to
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* #gst_vaapi_blend_process_begin to ensure the VA display gets unlocked.
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*
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* Returns: %TRUE if successful, %FALSE otherwise.
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*/
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gboolean
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gst_vaapi_blend_process_end (GstVaapiBlend * blend)
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{
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VAStatus va_status;
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g_return_val_if_fail (blend != NULL, FALSE);
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va_status = vaEndPicture (GST_VAAPI_DISPLAY_VADISPLAY (blend->display),
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blend->va_context);
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GST_VAAPI_DISPLAY_UNLOCK (blend->display);
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if (!vaapi_check_status (va_status, "vaEndPicture()"))
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return FALSE;
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return TRUE;
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}
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65
gst-libs/gst/vaapi/gstvaapiblend.h
Normal file
65
gst-libs/gst/vaapi/gstvaapiblend.h
Normal file
|
|
@ -0,0 +1,65 @@
|
||||||
|
/*
|
||||||
|
* gstvaapiblend.h - Video processing blend
|
||||||
|
*
|
||||||
|
* Copyright (C) 2019 Intel Corporation
|
||||||
|
* Author: U. Artie Eoff <ullysses.a.eoff@intel.com>
|
||||||
|
*
|
||||||
|
* This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2.1
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with this library; if not, write to the Free
|
||||||
|
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
||||||
|
* Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef GST_VAAPI_BLEND_H
|
||||||
|
#define GST_VAAPI_BLEND_H
|
||||||
|
|
||||||
|
#include <gst/vaapi/gstvaapisurface.h>
|
||||||
|
|
||||||
|
G_BEGIN_DECLS
|
||||||
|
|
||||||
|
#define GST_TYPE_VAAPI_BLEND \
|
||||||
|
(gst_vaapi_blend_get_type ())
|
||||||
|
#define GST_VAAPI_BLEND(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VAAPI_BLEND, GstVaapiBlend))
|
||||||
|
#define GST_IS_VAAPI_BLEND(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VAAPI_BLEND))
|
||||||
|
|
||||||
|
typedef struct _GstVaapiBlend GstVaapiBlend;
|
||||||
|
|
||||||
|
GstVaapiBlend *
|
||||||
|
gst_vaapi_blend_new (GstVaapiDisplay * display);
|
||||||
|
|
||||||
|
void
|
||||||
|
gst_vaapi_blend_replace (GstVaapiBlend ** old_blend_ptr,
|
||||||
|
GstVaapiBlend * new_blend);
|
||||||
|
|
||||||
|
gboolean
|
||||||
|
gst_vaapi_blend_process_begin (GstVaapiBlend * blend,
|
||||||
|
GstVaapiSurface * surface);
|
||||||
|
|
||||||
|
gboolean
|
||||||
|
gst_vaapi_blend_process_render (GstVaapiBlend * blend,
|
||||||
|
const GstVaapiSurface * surface, const GstVaapiRectangle * crop_rect,
|
||||||
|
const GstVaapiRectangle * target_rect, gdouble alpha);
|
||||||
|
|
||||||
|
gboolean
|
||||||
|
gst_vaapi_blend_process_end (GstVaapiBlend * blend);
|
||||||
|
|
||||||
|
GType
|
||||||
|
gst_vaapi_blend_get_type (void) G_GNUC_CONST;
|
||||||
|
|
||||||
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVaapiBlend, gst_object_unref)
|
||||||
|
|
||||||
|
G_END_DECLS
|
||||||
|
|
||||||
|
#endif /* GST_VAAPI_FILTER_H */
|
||||||
|
|
@ -1,4 +1,5 @@
|
||||||
gstlibvaapi_sources = [
|
gstlibvaapi_sources = [
|
||||||
|
'gstvaapiblend.c',
|
||||||
'gstvaapibufferproxy.c',
|
'gstvaapibufferproxy.c',
|
||||||
'gstvaapicodec_objects.c',
|
'gstvaapicodec_objects.c',
|
||||||
'gstvaapicontext.c',
|
'gstvaapicontext.c',
|
||||||
|
|
@ -44,6 +45,7 @@ gstlibvaapi_sources = [
|
||||||
]
|
]
|
||||||
|
|
||||||
gstlibvaapi_headers = [
|
gstlibvaapi_headers = [
|
||||||
|
'gstvaapiblend.h',
|
||||||
'gstvaapibufferproxy.h',
|
'gstvaapibufferproxy.h',
|
||||||
'gstvaapidecoder.h',
|
'gstvaapidecoder.h',
|
||||||
'gstvaapidecoder_h264.h',
|
'gstvaapidecoder_h264.h',
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue