mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 17:20:36 +00:00
msdk: adds util functions to handle GstContext
To share GstMsdkContext with each msdk element, it will be using GstContext. Most common code is from gstreamer-vaapi. https://bugzilla.gnome.org/show_bug.cgi?id=790752
This commit is contained in:
Hyunjun Ko
Sreerenj Balachandran
parent
a66d5620f3
commit
dddb84897f
4 changed files with 294 additions and 0 deletions
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@ -2,6 +2,7 @@ plugin_LTLIBRARIES = libgstmsdk.la
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libgstmsdk_la_SOURCES = \
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libgstmsdk_la_SOURCES = \
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gstmsdkcontext.c \
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gstmsdkcontext.c \
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gstmsdkcontextutil.c \
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gstmsdksystemmemory.c \
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gstmsdksystemmemory.c \
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gstmsdkvideomemory.c \
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gstmsdkvideomemory.c \
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gstmsdkbufferpool.c \
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gstmsdkbufferpool.c \
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@ -25,6 +26,7 @@ nodist_EXTRA_libgstmsdk_la_SOURCES = not_present.cxx
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noinst_HEADERS = \
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noinst_HEADERS = \
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msdk.h \
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msdk.h \
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gstmsdkcontext.h \
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gstmsdkcontext.h \
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gstmsdkcontextutil.h \
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gstmsdksystemmemory.h \
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gstmsdksystemmemory.h \
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gstmsdkvideomemory.h \
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gstmsdkvideomemory.h \
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gstmsdkbufferpool.h \
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gstmsdkbufferpool.h \
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234
sys/msdk/gstmsdkcontextutil.c
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234
sys/msdk/gstmsdkcontextutil.c
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@ -0,0 +1,234 @@
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/* GStreamer Intel MSDK plugin
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* Copyright (c) 2018, Intel Corporation
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* Copyright (c) 2018, Igalia S.L.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGDECE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gstmsdkcontextutil.h"
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
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static void
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_init_context_debug (void)
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{
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#ifndef GST_DISABLE_GST_DEBUG
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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_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
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g_once_init_leave (&_init, 1);
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}
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#endif
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}
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static gboolean
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context_pad_query (const GValue * item, GValue * value, gpointer user_data)
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{
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GstPad *const pad = g_value_get_object (item);
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GstQuery *const query = user_data;
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if (gst_pad_peer_query (pad, query)) {
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g_value_set_boolean (value, TRUE);
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return FALSE;
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}
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, pad, "context pad peer query failed");
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return TRUE;
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}
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static gboolean
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_gst_context_run_query (GstElement * element, GstQuery * query,
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GstPadDirection direction)
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{
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GstIteratorFoldFunction const func = context_pad_query;
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GstIterator *it;
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GValue res = { 0 };
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g_value_init (&res, G_TYPE_BOOLEAN);
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g_value_set_boolean (&res, FALSE);
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/* Ask neighbour */
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if (direction == GST_PAD_SRC)
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it = gst_element_iterate_src_pads (element);
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else
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it = gst_element_iterate_sink_pads (element);
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while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC)
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gst_iterator_resync (it);
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gst_iterator_free (it);
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return g_value_get_boolean (&res);
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}
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static gboolean
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_gst_context_get_from_query (GstElement * element, GstQuery * query,
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GstPadDirection direction)
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{
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GstContext *ctxt;
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if (!_gst_context_run_query (element, query, direction))
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return FALSE;
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gst_query_parse_context (query, &ctxt);
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if (!ctxt)
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return FALSE;
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
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"found context (%" GST_PTR_FORMAT ") in %s query", ctxt,
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direction == GST_PAD_SRC ? "downstream" : "upstream");
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gst_element_set_context (element, ctxt);
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return TRUE;
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}
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static void
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_gst_context_query (GstElement * element, const gchar * context_type)
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{
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GstQuery *query;
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GstMessage *msg;
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/* 2) Query downstream with GST_QUERY_CONTEXT for the context and
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check if downstream already has a context of the specific
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type */
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/* 3) Query upstream with GST_QUERY_CONTEXT for the context and
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check if upstream already has a context of the specific
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type */
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query = gst_query_new_context (context_type);
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if (_gst_context_get_from_query (element, query, GST_PAD_SRC))
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goto found;
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if (_gst_context_get_from_query (element, query, GST_PAD_SINK))
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goto found;
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/* 4) Post a GST_MESSAGE_NEED_CONTEXT message on the bus with
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the required context types and afterwards check if an
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usable context was set now as in 1). The message could
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be handled by the parent bins of the element and the
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application. */
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
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"posting `need-context' message");
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msg = gst_message_new_need_context (GST_OBJECT_CAST (element), context_type);
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if (!gst_element_post_message (element, msg))
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element, "No bus attached");
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/* Whomever responds to the need-context message performs a
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GstElement::set_context() with the required context in which the
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element is required to update the display_ptr */
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found:
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gst_query_unref (query);
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}
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gboolean
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gst_msdk_context_prepare (GstElement * element, GstMsdkContext ** context_ptr)
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{
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g_return_val_if_fail (element != NULL, FALSE);
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g_return_val_if_fail (context_ptr != NULL, FALSE);
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_init_context_debug ();
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/* 1) Check if the element already has a context of the specific type. */
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if (*context_ptr) {
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GST_LOG_OBJECT (element, "already have a context %" GST_PTR_FORMAT,
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*context_ptr);
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return TRUE;
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}
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_gst_context_query (element, GST_MSDK_CONTEXT_TYPE_NAME);
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if (*context_ptr)
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GST_LOG_OBJECT (element, "found a context %" GST_PTR_FORMAT, *context_ptr);
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return *context_ptr != NULL;
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}
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gboolean
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gst_msdk_context_get_context (GstContext * context,
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GstMsdkContext ** msdk_context)
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{
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const GstStructure *structure;
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const gchar *type;
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g_return_val_if_fail (GST_IS_CONTEXT (context), FALSE);
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type = gst_context_get_context_type (context);
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if (!g_strcmp0 (type, GST_MSDK_CONTEXT_TYPE_NAME)) {
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structure = gst_context_get_structure (context);
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return gst_structure_get (structure, GST_MSDK_CONTEXT_TYPE_NAME,
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GST_TYPE_MSDK_CONTEXT, msdk_context, NULL);
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}
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return FALSE;
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}
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static void
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gst_msdk_context_propagate (GstElement * element, GstMsdkContext * msdk_context)
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{
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GstContext *context;
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GstStructure *structure;
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GstMessage *msg;
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context = gst_context_new (GST_MSDK_CONTEXT_TYPE_NAME, FALSE);
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structure = gst_context_writable_structure (context);
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gst_structure_set (structure, GST_MSDK_CONTEXT_TYPE_NAME,
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GST_TYPE_MSDK_CONTEXT, msdk_context, NULL);
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gst_element_set_context (element, context);
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
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"posting `have-context' message with MSDK context %" GST_PTR_FORMAT,
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msdk_context);
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msg = gst_message_new_have_context (GST_OBJECT_CAST (element), context);
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if (!gst_element_post_message (element, msg)) {
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GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element, "No bus attached");
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}
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}
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gboolean
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gst_msdk_context_ensure_context (GstElement * element, gboolean hardware)
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{
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GstMsdkContext *msdk_context;
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msdk_context = gst_msdk_context_new (hardware);
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if (!msdk_context) {
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GST_ERROR_OBJECT (element, "Context creation failed");
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return FALSE;
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}
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GST_INFO_OBJECT (element, "New MSDK Context %p", msdk_context);
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gst_msdk_context_propagate (element, msdk_context);
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gst_object_unref (msdk_context);
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return TRUE;
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}
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57
sys/msdk/gstmsdkcontextutil.h
Normal file
57
sys/msdk/gstmsdkcontextutil.h
Normal file
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@ -0,0 +1,57 @@
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/* GStreamer Intel MSDK plugin
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* Copyright (c) 2018, Intel Corporation
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* Copyright (c) 2018, Igalia S.L.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGDECE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef GST_MSDK_CONTEXT_UTIL_H
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#define GST_MSDK_CONTEXT_UTIL_H
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#include "msdk.h"
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#include "gstmsdkcontext.h"
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#ifndef _WIN32
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#include <va/va.h>
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#endif
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#define GST_MSDK_CONTEXT_TYPE_NAME "gst.msdk.Context"
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G_BEGIN_DECLS
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gboolean
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gst_msdk_context_prepare (GstElement * element, GstMsdkContext ** context_ptr);
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gboolean
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gst_msdk_context_get_context (GstContext * context, GstMsdkContext ** msdk_context);
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gboolean
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gst_msdk_context_ensure_context (GstElement * element, gboolean hardware);
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G_END_DECLS
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#endif /* GST_MSDK_CONTEXT_UTIL_H */
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@ -1,6 +1,7 @@
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msdk_sources = [
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msdk_sources = [
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'gstmsdk.c',
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'gstmsdk.c',
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'gstmsdkcontext.c',
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'gstmsdkcontext.c',
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'gstmsdkcontextutil.c',
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'gstmsdksystemmemory.c',
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'gstmsdksystemmemory.c',
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'gstmsdkvideomemory.c',
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'gstmsdkvideomemory.c',
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'gstmsdkbufferpool.c',
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'gstmsdkbufferpool.c',
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