mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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354 lines
7.6 KiB
C
354 lines
7.6 KiB
C
/*
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* GStreamer
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* Copyright (C) 2016 Matthew Waters <matthew@centricular.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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gstglquery
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* @short_description: OpenGL query abstraction
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* @title: GstGLQuery
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* @see_also:
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*
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* A #GstGLQuery represents and holds an OpenGL query object. Various types of
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* queries can be run or counters retrieved.
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*
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* Since: 1.10
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstglquery.h"
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#include "gstglcontext.h"
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#include "gstglfuncs.h"
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#ifndef GL_TIME_ELAPSED
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#define GL_TIME_ELAPSED 0x88BF
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#endif
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#ifndef GL_TIMESTAMP
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#define GL_TIMESTAMP 0x8E28
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#endif
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#ifndef GL_QUERY_RESULT
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#define GL_QUERY_RESULT 0x8866
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#endif
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#define GST_CAT_DEFAULT gst_gl_query_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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static void
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_init_debug (void)
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{
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static volatile gsize _init = 0;
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if (g_once_init_enter (&_init)) {
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glquery", 0, "glquery element");
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g_once_init_leave (&_init, 1);
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}
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}
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static const gchar *
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_query_type_to_string (guint query_type)
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{
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switch (query_type) {
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case GST_GL_QUERY_TIME_ELAPSED:
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case GL_TIME_ELAPSED:
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return "time elapsed";
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case GL_TIMESTAMP:
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case GST_GL_QUERY_TIMESTAMP:
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return "timestamp";
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default:
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return "unknown";
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}
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}
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static guint
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_gst_gl_query_type_to_gl (GstGLQueryType query_type)
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{
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if (query_type == GST_GL_QUERY_TIME_ELAPSED)
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return GL_TIME_ELAPSED;
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if (query_type == GST_GL_QUERY_TIMESTAMP)
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return GL_TIMESTAMP;
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return 0;
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}
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static gboolean
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_query_type_supports_counter (guint gl_query_type)
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{
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return gl_query_type == GL_TIMESTAMP;
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}
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static gboolean
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_query_type_supports_begin_end (guint gl_query_type)
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{
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return gl_query_type == GL_TIME_ELAPSED;
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}
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static gboolean
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_context_supports_query_type (GstGLContext * context, guint gl_query_type)
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{
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return gl_query_type != 0 && context->gl_vtable->GenQueries != NULL;
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}
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static gchar *
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_log_time (gpointer user_data)
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{
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GstGLQuery *query = user_data;
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gint64 result;
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result = gst_gl_query_result (query);
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return gst_info_strdup_printf ("%" GST_TIME_FORMAT, GST_TIME_ARGS (result));
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}
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/**
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* gst_gl_query_init:
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* @query: a #GstGLQuery
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* @context: a #GstGLContext
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* @query_type: the #GstGLQueryType
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_init (GstGLQuery * query, GstGLContext * context,
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GstGLQueryType query_type)
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{
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const GstGLFuncs *gl;
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GLenum gl_query_type;
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g_return_if_fail (query != NULL);
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g_return_if_fail (GST_IS_GL_CONTEXT (context));
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gl = context->gl_vtable;
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gl_query_type = _gst_gl_query_type_to_gl (query_type);
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g_return_if_fail (gl_query_type != GL_NONE);
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memset (query, 0, sizeof (*query));
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_init_debug ();
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query->query_type = gl_query_type;
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query->context = gst_object_ref (context);
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query->supported = _context_supports_query_type (context, query->query_type);
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if (query->supported)
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gl->GenQueries (1, &query->query_id);
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gst_gl_async_debug_init (&query->debug);
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query->debug.callback = _log_time;
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query->debug.user_data = query;
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}
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/**
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* gst_gl_query_unset:
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* @query: a #GstGLQuery
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*
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* Free any dynamically allocated resources
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_unset (GstGLQuery * query)
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{
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const GstGLFuncs *gl;
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g_return_if_fail (query != NULL);
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if (query->start_called)
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g_critical ("Unsetting a running query. This may not be what you wanted."
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"Be sure to pair calls to gst_gl_query_start() and gst_gl_query_end()");
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GST_TRACE ("%p unsetting query %u", query, query->query_id);
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gl = query->context->gl_vtable;
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/* unset the debug object as it may callback to print the last message */
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gst_gl_async_debug_unset (&query->debug);
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if (query->query_id)
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gl->DeleteQueries (1, &query->query_id);
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gst_object_unref (query->context);
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}
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/**
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* gst_gl_query_new: (skip)
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* @context: a #GstGLContext
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* @query_type: the #GstGLQueryType to create
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*
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* Free with gst_gl_query_free()
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*
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* Returns: a new #GstGLQuery
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*
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* Since: 1.10
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*/
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GstGLQuery *
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gst_gl_query_new (GstGLContext * context, GstGLQueryType query_type)
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{
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GstGLQuery *query = g_new0 (GstGLQuery, 1);
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gst_gl_query_init (query, context, query_type);
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return query;
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}
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/**
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* gst_gl_query_free:
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* @query: a #GstGLQuery
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*
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* Frees a #GstGLQuery
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_free (GstGLQuery * query)
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{
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g_return_if_fail (query != NULL);
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gst_gl_query_unset (query);
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g_free (query);
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}
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/**
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* gst_gl_query_start:
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* @query: a #GstGLQuery
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*
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* Start counting the query
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_start (GstGLQuery * query)
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{
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const GstGLFuncs *gl;
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g_return_if_fail (query != NULL);
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g_return_if_fail (_query_type_supports_begin_end (query->query_type));
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g_return_if_fail (query->start_called == FALSE);
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query->start_called = TRUE;
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if (!query->supported)
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return;
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gst_gl_async_debug_output_log_msg (&query->debug);
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GST_TRACE ("%p start query type \'%s\' id %u", query,
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_query_type_to_string (query->query_type), query->query_id);
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gl = query->context->gl_vtable;
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gl->BeginQuery (query->query_type, query->query_id);
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}
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/**
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* gst_gl_query_end:
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* @query: a #GstGLQuery
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*
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* End counting the query
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_end (GstGLQuery * query)
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{
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const GstGLFuncs *gl;
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g_return_if_fail (query != NULL);
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g_return_if_fail (_query_type_supports_begin_end (query->query_type));
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g_return_if_fail (query->start_called);
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query->start_called = FALSE;
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if (!query->supported)
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return;
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GST_TRACE ("%p end query type \'%s\' id %u", query,
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_query_type_to_string (query->query_type), query->query_id);
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gl = query->context->gl_vtable;
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gl->EndQuery (query->query_type);
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}
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/**
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* gst_gl_query_counter:
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* @query: a #GstGLQuery
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*
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* Record the result of a counter
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*
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* Since: 1.10
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*/
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void
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gst_gl_query_counter (GstGLQuery * query)
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{
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const GstGLFuncs *gl;
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g_return_if_fail (query != NULL);
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g_return_if_fail (_query_type_supports_counter (query->query_type));
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if (!query->supported)
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return;
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GST_TRACE ("%p query counter type \'%s\' id %u", query,
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_query_type_to_string (query->query_type), query->query_id);
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gst_gl_async_debug_output_log_msg (&query->debug);
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gl = query->context->gl_vtable;
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gl->QueryCounter (query->query_id, query->query_type);
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}
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/**
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* gst_gl_query_result:
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* @query: a #GstGLQuery
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*
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* Returns: the result of the query
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*
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* Since: 1.10
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*/
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guint64
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gst_gl_query_result (GstGLQuery * query)
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{
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const GstGLFuncs *gl;
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guint64 ret;
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g_return_val_if_fail (query != NULL, 0);
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g_return_val_if_fail (!query->start_called, 0);
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if (!query->supported)
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return 0;
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gl = query->context->gl_vtable;
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if (gl->GetQueryObjectui64v) {
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gl->GetQueryObjectui64v (query->query_id, GL_QUERY_RESULT,
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(GLuint64 *) & ret);
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} else {
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guint tmp;
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gl->GetQueryObjectuiv (query->query_id, GL_QUERY_RESULT, &tmp);
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ret = tmp;
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}
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GST_TRACE ("%p get result %" G_GUINT64_FORMAT " type \'%s\' id %u", query,
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ret, _query_type_to_string (query->query_type), query->query_id);
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return ret;
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}
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