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playback: Add gstplaybackutils.{h,c} to deploy the common subroutines
Bring some of the helper functions in gstplaybin2.c to new files
gstplaybackutils.{h,c} which can be utilized by other files
in gst/playback too.
https://bugzilla.gnome.org/show_bug.cgi?id=687182
This commit is contained in:
Sreerenj Balachandran
Sebastian Dröge
parent
51c3ef05cd
commit
16378a7de3
4 changed files with 173 additions and 101 deletions
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@ -13,7 +13,8 @@ libgstplayback_la_SOURCES = \
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gstplaysinkvideoconvert.c \
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gstplaysinkaudioconvert.c \
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gstplaysinkconvertbin.c \
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gststreamsynchronizer.c
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gststreamsynchronizer.c \
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gstplaybackutils.c
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nodist_libgstplayback_la_SOURCES = $(built_sources)
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libgstplayback_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(csp_cflags)
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@ -34,7 +35,8 @@ noinst_HEADERS = \
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gstplaysinkvideoconvert.h \
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gstplaysinkaudioconvert.h \
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gstplaysinkconvertbin.h \
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gststreamsynchronizer.h
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gststreamsynchronizer.h \
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gstplaybackutils.h
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BUILT_SOURCES = $(built_headers) $(built_sources)
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129
gst/playback/gstplaybackutils.c
Normal file
129
gst/playback/gstplaybackutils.c
Normal file
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@ -0,0 +1,129 @@
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/* Copyright (C) <2014> Intel Corporation
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* Copyright (C) <2014> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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*
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* Author: Sreerenj Balachandran <sreerenj.balachandran@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 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstplaybackutils.h"
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static GstStaticCaps raw_audio_caps = GST_STATIC_CAPS ("audio/x-raw(ANY)");
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static GstStaticCaps raw_video_caps = GST_STATIC_CAPS ("video/x-raw(ANY)");
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/* unref the caps after usage */
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static GstCaps *
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get_template_caps (GstElementFactory * factory, GstPadDirection direction)
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{
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const GList *templates;
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GstStaticPadTemplate *templ = NULL;
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GList *walk;
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templates = gst_element_factory_get_static_pad_templates (factory);
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for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
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templ = walk->data;
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if (templ->direction == direction)
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break;
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}
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if (templ)
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return gst_static_caps_get (&templ->static_caps);
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else
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return NULL;
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}
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static gboolean
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is_included (GList * list, GstCapsFeatures * cf)
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{
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for (; list; list = list->next) {
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if (gst_caps_features_is_equal ((GstCapsFeatures *) list->data, cf))
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return TRUE;
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}
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return FALSE;
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}
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/* compute the number of common caps features */
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guint
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gst_playback_utils_get_n_common_capsfeatures (GstElementFactory * fact1,
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GstElementFactory * fact2, GstPlayFlags flags, gboolean isaudioelement)
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{
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GstCaps *fact1_tmpl_caps, *fact2_tmpl_caps;
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GstCapsFeatures *fact1_features, *fact2_features;
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GstStructure *fact1_struct, *fact2_struct;
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GList *cf_list = NULL;
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guint fact1_caps_size, fact2_caps_size;
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guint i, j, n_common_cf = 0;
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GstCaps *raw_caps =
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(isaudioelement) ? gst_static_caps_get (&raw_audio_caps) :
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gst_static_caps_get (&raw_video_caps);
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GstStructure *raw_struct = gst_caps_get_structure (raw_caps, 0);
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gboolean native_raw =
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(isaudioelement ? ! !(flags & GST_PLAY_FLAG_NATIVE_AUDIO) : ! !(flags &
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GST_PLAY_FLAG_NATIVE_VIDEO));
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fact1_tmpl_caps = get_template_caps (fact1, GST_PAD_SRC);
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fact2_tmpl_caps = get_template_caps (fact2, GST_PAD_SINK);
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if (!fact1_tmpl_caps || !fact2_tmpl_caps) {
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GST_ERROR ("Failed to get template caps from decoder or sink");
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return 0;
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}
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fact1_caps_size = gst_caps_get_size (fact1_tmpl_caps);
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fact2_caps_size = gst_caps_get_size (fact2_tmpl_caps);
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for (i = 0; i < fact1_caps_size; i++) {
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fact1_features =
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gst_caps_get_features ((const GstCaps *) fact1_tmpl_caps, i);
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fact1_struct =
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gst_caps_get_structure ((const GstCaps *) fact1_tmpl_caps, i);
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for (j = 0; j < fact2_caps_size; j++) {
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fact2_features =
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gst_caps_get_features ((const GstCaps *) fact2_tmpl_caps, j);
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fact2_struct =
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gst_caps_get_structure ((const GstCaps *) fact2_tmpl_caps, j);
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/* A common caps feature is given if the caps features are equal
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* and the structures can intersect. If the NATIVE_AUDIO/NATIVE_VIDEO
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* flags are not set we also allow if both structures are raw caps with
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* system memory caps features, because in that case we have converters in
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* place.
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*/
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if (gst_caps_features_is_equal (fact1_features, fact2_features) &&
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(gst_structure_can_intersect (fact1_struct, fact2_struct) ||
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(!native_raw
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&& gst_caps_features_is_equal (fact1_features,
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GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
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&& gst_structure_can_intersect (raw_struct, fact1_struct)
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&& gst_structure_can_intersect (raw_struct, fact2_struct)))
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&& !is_included (cf_list, fact2_features)) {
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cf_list = g_list_prepend (cf_list, fact2_features);
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n_common_cf++;
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}
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}
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}
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if (cf_list)
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g_list_free (cf_list);
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gst_caps_unref (fact1_tmpl_caps);
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gst_caps_unref (fact2_tmpl_caps);
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return n_common_cf;
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}
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37
gst/playback/gstplaybackutils.h
Normal file
37
gst/playback/gstplaybackutils.h
Normal file
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@ -0,0 +1,37 @@
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/* Copyright (C) <2014> Intel Corporation
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* Copyright (C) <2014> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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*
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* Author: Sreerenj Balachandran <sreerenj.balachandran@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 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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#ifndef __GST_PLAYBACK_UTILS_H__
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#define __GST_PLAYBACK_UTILS_H__
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G_BEGIN_DECLS
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#include <gst/gst.h>
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#include "gstplay-enum.h"
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guint
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gst_playback_utils_get_n_common_capsfeatures (GstElementFactory * fact1,
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GstElementFactory * fact2,
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GstPlayFlags flags,
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gboolean isaudioelement);
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G_END_DECLS
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#endif /* __GST_PLAYBACK_UTILS_H__ */
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@ -237,6 +237,7 @@
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#include "gstplayback.h"
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#include "gstplaysink.h"
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#include "gstsubtitleoverlay.h"
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#include "gstplaybackutils.h"
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GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
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#define GST_CAT_DEFAULT gst_play_bin_debug
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@ -3811,103 +3812,6 @@ avelement_compare (gconstpointer p1, gconstpointer p2)
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return strcmp (GST_OBJECT_NAME (fd1), GST_OBJECT_NAME (fd2));
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}
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/* unref the caps after usage */
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static GstCaps *
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get_template_caps (GstElementFactory * factory, GstPadDirection direction)
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{
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const GList *templates;
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GstStaticPadTemplate *templ = NULL;
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GList *walk;
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templates = gst_element_factory_get_static_pad_templates (factory);
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for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
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templ = walk->data;
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if (templ->direction == direction)
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break;
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}
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if (templ)
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return gst_static_caps_get (&templ->static_caps);
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else
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return NULL;
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}
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static gboolean
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is_included (GList * list, GstCapsFeatures * cf)
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{
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for (; list; list = list->next) {
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if (gst_caps_features_is_equal ((GstCapsFeatures *) list->data, cf))
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return TRUE;
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}
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return FALSE;
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}
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/* compute the number of common caps features */
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static guint
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get_n_common_capsfeatures (GstPlayBin * playbin, GstElementFactory * dec,
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GstElementFactory * sink, gboolean isaudioelement)
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{
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GstCaps *d_tmpl_caps, *s_tmpl_caps;
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GstCapsFeatures *d_features, *s_features;
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GstStructure *d_struct, *s_struct;
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GList *cf_list = NULL;
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guint d_caps_size, s_caps_size;
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guint i, j, n_common_cf = 0;
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GstCaps *raw_caps =
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(isaudioelement) ? gst_static_caps_get (&raw_audio_caps) :
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gst_static_caps_get (&raw_video_caps);
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GstStructure *raw_struct = gst_caps_get_structure (raw_caps, 0);
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GstPlayFlags flags = gst_play_bin_get_flags (playbin);
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gboolean native_raw =
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(isaudioelement ? ! !(flags & GST_PLAY_FLAG_NATIVE_AUDIO) : ! !(flags &
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GST_PLAY_FLAG_NATIVE_VIDEO));
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d_tmpl_caps = get_template_caps (dec, GST_PAD_SRC);
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s_tmpl_caps = get_template_caps (sink, GST_PAD_SINK);
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if (!d_tmpl_caps || !s_tmpl_caps) {
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GST_ERROR ("Failed to get template caps from decoder or sink");
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return 0;
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}
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d_caps_size = gst_caps_get_size (d_tmpl_caps);
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s_caps_size = gst_caps_get_size (s_tmpl_caps);
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for (i = 0; i < d_caps_size; i++) {
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d_features = gst_caps_get_features ((const GstCaps *) d_tmpl_caps, i);
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d_struct = gst_caps_get_structure ((const GstCaps *) d_tmpl_caps, i);
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for (j = 0; j < s_caps_size; j++) {
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s_features = gst_caps_get_features ((const GstCaps *) s_tmpl_caps, j);
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s_struct = gst_caps_get_structure ((const GstCaps *) s_tmpl_caps, j);
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/* A common caps feature is given if the caps features are equal
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* and the structures can intersect. If the NATIVE_AUDIO/NATIVE_VIDEO
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* flags are not set we also allow if both structures are raw caps with
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* system memory caps features, because in that case we have converters in
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* place.
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*/
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if (gst_caps_features_is_equal (d_features, s_features) &&
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(gst_structure_can_intersect (d_struct, s_struct) ||
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(!native_raw
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&& gst_caps_features_is_equal (d_features,
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GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
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&& gst_structure_can_intersect (raw_struct, d_struct)
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&& gst_structure_can_intersect (raw_struct, s_struct)))
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&& !is_included (cf_list, s_features)) {
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cf_list = g_list_prepend (cf_list, s_features);
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n_common_cf++;
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}
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}
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}
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if (cf_list)
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g_list_free (cf_list);
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gst_caps_unref (d_tmpl_caps);
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gst_caps_unref (s_tmpl_caps);
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return n_common_cf;
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}
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static GSequence *
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avelements_create (GstPlayBin * playbin, gboolean isaudioelement)
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{
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@ -3951,8 +3855,8 @@ avelements_create (GstPlayBin * playbin, gboolean isaudioelement)
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s_factory = (GstElementFactory *) sl->data;
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n_common_cf =
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get_n_common_capsfeatures (playbin, d_factory, s_factory,
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isaudioelement);
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gst_playback_utils_get_n_common_capsfeatures (d_factory, s_factory,
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gst_play_bin_get_flags (playbin), isaudioelement);
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if (n_common_cf < 1)
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continue;
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