mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
86a4117f7e
Original commit message from CVS: Remove all usage of gst_pad_get_caps(), and replace it with gst_pad_get_allowed_caps() or gst_pad_get_negotiated_cap().
547 lines
16 KiB
C
547 lines
16 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 <string.h>
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/*#define DEBUG_ENABLED */
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#include <gstvideofilter.h>
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/* GstVideofilter signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_METHOD,
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/* FILL ME */
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};
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static void gst_videofilter_base_init (gpointer g_class);
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static void gst_videofilter_class_init (gpointer g_class, gpointer class_data);
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static void gst_videofilter_init (GTypeInstance *instance, gpointer g_class);
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static void gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_videofilter_chain (GstPad *pad, GstData *_data);
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GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass);
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static void gst_videofilter_setup(GstVideofilter *videofilter);
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static GstElementClass *parent_class = NULL;
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GType
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gst_videofilter_get_type (void)
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{
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static GType videofilter_type = 0;
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if (!videofilter_type) {
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static const GTypeInfo videofilter_info = {
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sizeof(GstVideofilterClass),
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gst_videofilter_base_init,
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NULL,
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gst_videofilter_class_init,
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NULL,
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NULL,
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sizeof(GstVideofilter),
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0,
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gst_videofilter_init,
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};
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videofilter_type = g_type_register_static(GST_TYPE_ELEMENT,
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"GstVideofilter", &videofilter_info, G_TYPE_FLAG_ABSTRACT);
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}
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return videofilter_type;
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}
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static void gst_videofilter_base_init (gpointer g_class)
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{
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static GstElementDetails videofilter_details = {
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"Video scaler",
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"Filter/Effect/Video",
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"Resizes video",
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"David Schleef <ds@schleef.org>"
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};
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GstVideofilterClass *klass = (GstVideofilterClass *) g_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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klass->formats = g_ptr_array_new();
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gst_element_class_set_details (element_class, &videofilter_details);
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}
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static void gst_videofilter_class_init (gpointer g_class, gpointer class_data)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstVideofilterClass *klass;
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klass = (GstVideofilterClass *)g_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_videofilter_set_property;
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gobject_class->get_property = gst_videofilter_get_property;
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}
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static GstStructure *gst_videofilter_format_get_structure(GstVideofilterFormat *format)
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{
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unsigned int fourcc;
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GstStructure *structure;
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if(format->filter_func==NULL)
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return NULL;
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fourcc = GST_MAKE_FOURCC(format->fourcc[0],format->fourcc[1],format->fourcc[2],format->fourcc[3]);
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if(format->depth){
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structure = gst_structure_new ("video/x-raw-rgb",
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"depth", G_TYPE_INT, format->depth,
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"bpp", G_TYPE_INT, format->bpp,
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"endianness", G_TYPE_INT, format->endianness,
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"red_mask", G_TYPE_INT, format->red_mask,
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"green_mask", G_TYPE_INT, format->green_mask,
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"blue_mask", G_TYPE_INT, format->blue_mask, NULL);
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}else{
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structure = gst_structure_new ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, fourcc, NULL);
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}
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gst_structure_set(structure,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE,
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NULL);
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return structure;
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}
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GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass)
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{
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GstCaps *caps;
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GstStructure *structure;
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int i;
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caps = gst_caps_new_empty();
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for(i=0;i<klass->formats->len;i++){
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structure = gst_videofilter_format_get_structure(g_ptr_array_index(klass->formats,i));
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gst_caps_append_structure (caps, structure);
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}
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return caps;
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}
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static GstCaps *
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gst_videofilter_getcaps (GstPad *pad)
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{
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GstVideofilter *videofilter;
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GstVideofilterClass *klass;
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//GstCaps *caps;
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GstCaps *othercaps;
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GstPad *otherpad;
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//int i;
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GST_DEBUG("gst_videofilter_getcaps");
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
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otherpad = (pad == videofilter->srcpad) ? videofilter->sinkpad :
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videofilter->srcpad;
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othercaps = gst_pad_get_allowed_caps (otherpad);
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return othercaps;
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#if 0
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/* FIXME videofilter doesn't allow passthru of video formats it
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* doesn't understand. */
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/* Look through our list of caps and find those that match with
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* the peer's formats. Create a list of them. */
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/* FIXME optimize if peercaps == NULL */
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caps = gst_caps_new_empty ();
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for(i=0;i<klass->formats->len;i++){
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GstCaps *icaps;
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GstCaps *fromcaps;
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fromcaps = gst_caps_new_full (gst_videofilter_format_get_structure (
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g_ptr_array_index (klass->formats,i)), NULL);
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icaps = gst_caps_intersect (fromcaps, peercaps);
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if(icaps != NULL){
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gst_caps_append (caps, fromcaps);
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} else {
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gst_caps_free (fromcaps);
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}
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if(icaps) gst_caps_free (icaps);
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}
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gst_caps_free (peercaps);
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return caps;
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#endif
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}
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static GstPadLinkReturn
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gst_videofilter_link (GstPad *pad, const GstCaps *caps)
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{
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GstVideofilter *videofilter;
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GstStructure *structure;
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gboolean ret;
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int width, height;
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double framerate;
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GstPadLinkReturn lret;
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GstPad *otherpad;
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GST_DEBUG("gst_videofilter_src_link");
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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otherpad = (pad == videofilter->srcpad) ? videofilter->sinkpad :
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videofilter->srcpad;
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structure = gst_caps_get_structure (caps, 0);
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videofilter->format = gst_videofilter_find_format_by_structure (
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videofilter, structure);
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g_return_val_if_fail(videofilter->format, GST_PAD_LINK_REFUSED);
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ret = gst_structure_get_int (structure, "width", &width);
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ret &= gst_structure_get_int (structure, "height", &height);
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ret &= gst_structure_get_double (structure, "framerate", &framerate);
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if (!ret) return GST_PAD_LINK_REFUSED;
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lret = gst_pad_try_set_caps (otherpad, caps);
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if (GST_PAD_LINK_FAILED (lret)) return lret;
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GST_DEBUG("width %d height %d",width,height);
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#if 0
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if (pad == videofilter->srcpad) {
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videofilter->to_width = width;
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videofilter->to_height = height;
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} else {
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videofilter->from_width = width;
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videofilter->from_height = height;
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}
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#endif
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videofilter->to_width = width;
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videofilter->to_height = height;
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videofilter->from_width = width;
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videofilter->from_height = height;
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videofilter->framerate = framerate;
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gst_videofilter_setup(videofilter);
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return GST_PAD_LINK_OK;
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}
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static void
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gst_videofilter_init (GTypeInstance *instance, gpointer g_class)
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{
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GstVideofilter *videofilter = GST_VIDEOFILTER (instance);
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GstPadTemplate *pad_template;
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GST_DEBUG("gst_videofilter_init");
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pad_template = gst_element_class_get_pad_template(GST_ELEMENT_CLASS(g_class),
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"sink");
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g_return_if_fail(pad_template != NULL);
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videofilter->sinkpad = gst_pad_new_from_template(pad_template, "sink");
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gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->sinkpad);
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gst_pad_set_chain_function(videofilter->sinkpad,gst_videofilter_chain);
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gst_pad_set_link_function(videofilter->sinkpad,gst_videofilter_link);
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gst_pad_set_getcaps_function(videofilter->sinkpad,gst_videofilter_getcaps);
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pad_template = gst_element_class_get_pad_template(GST_ELEMENT_CLASS(g_class),
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"src");
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g_return_if_fail(pad_template != NULL);
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videofilter->srcpad = gst_pad_new_from_template(pad_template, "src");
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gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->srcpad);
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gst_pad_set_link_function(videofilter->srcpad,gst_videofilter_link);
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gst_pad_set_getcaps_function(videofilter->srcpad,gst_videofilter_getcaps);
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videofilter->inited = FALSE;
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}
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static void
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gst_videofilter_chain (GstPad *pad, GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstVideofilter *videofilter;
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guchar *data;
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gulong size;
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GstBuffer *outbuf;
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GST_DEBUG ("gst_videofilter_chain");
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
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//g_return_if_fail (videofilter->inited);
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data = GST_BUFFER_DATA(buf);
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size = GST_BUFFER_SIZE(buf);
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if(videofilter->passthru){
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gst_pad_push(videofilter->srcpad, GST_DATA (buf));
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return;
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}
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GST_DEBUG ("gst_videofilter_chain: got buffer of %ld bytes in '%s'",size,
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GST_OBJECT_NAME (videofilter));
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GST_DEBUG("size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
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size,
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videofilter->from_width, videofilter->from_height,
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videofilter->to_width, videofilter->to_height,
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size, videofilter->from_buf_size,
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videofilter->to_buf_size);
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g_return_if_fail (size >= videofilter->from_buf_size);
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if (size > videofilter->from_buf_size) {
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GST_INFO("buffer size %ld larger than expected (%d)",
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size, videofilter->from_buf_size);
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}
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outbuf = gst_pad_alloc_buffer(videofilter->srcpad, GST_BUFFER_OFFSET_NONE,
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videofilter->to_buf_size);
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GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
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GST_BUFFER_DURATION(outbuf) = GST_BUFFER_DURATION(buf);
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g_return_if_fail(videofilter->format);
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GST_DEBUG ("format %s",videofilter->format->fourcc);
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videofilter->in_buf = buf;
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videofilter->out_buf = outbuf;
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videofilter->format->filter_func(videofilter, GST_BUFFER_DATA(outbuf), data);
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GST_DEBUG ("gst_videofilter_chain: pushing buffer of %d bytes in '%s'",GST_BUFFER_SIZE(outbuf),
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GST_OBJECT_NAME (videofilter));
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gst_pad_push(videofilter->srcpad, GST_DATA (outbuf));
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gst_buffer_unref(buf);
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}
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static void
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gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstVideofilter *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_VIDEOFILTER(object));
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src = GST_VIDEOFILTER(object);
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GST_DEBUG("gst_videofilter_set_property");
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switch (prop_id) {
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default:
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break;
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}
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}
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static void
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gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstVideofilter *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_VIDEOFILTER(object));
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src = GST_VIDEOFILTER(object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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int gst_videofilter_get_input_width(GstVideofilter *videofilter)
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{
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g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
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return videofilter->from_width;
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}
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int gst_videofilter_get_input_height(GstVideofilter *videofilter)
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{
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g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
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return videofilter->from_height;
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}
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void gst_videofilter_set_output_size(GstVideofilter *videofilter,
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int width, int height)
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{
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int ret;
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GstCaps *srccaps;
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GstStructure *structure;
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g_return_if_fail(GST_IS_VIDEOFILTER(videofilter));
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videofilter->to_width = width;
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videofilter->to_height = height;
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videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height
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* videofilter->format->bpp)/8;
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srccaps = gst_caps_copy (gst_pad_get_negotiated_caps(videofilter->srcpad));
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structure = gst_caps_get_structure (srccaps, 0);
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gst_structure_set (structure, "width", G_TYPE_INT, width,
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"height", G_TYPE_INT, height, NULL);
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ret = gst_pad_try_set_caps (videofilter->srcpad, srccaps);
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if (ret < 0) {
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g_critical ("could not set output size");
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}
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}
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static void gst_videofilter_setup(GstVideofilter *videofilter)
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{
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GstVideofilterClass *klass;
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klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
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if(klass->setup){
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klass->setup(videofilter);
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}
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if(videofilter->to_width == 0){
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videofilter->to_width = videofilter->from_width;
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}
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if(videofilter->to_height == 0){
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videofilter->to_height = videofilter->from_height;
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}
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g_return_if_fail(videofilter->format != NULL);
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g_return_if_fail(videofilter->from_width > 0);
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g_return_if_fail(videofilter->from_height > 0);
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g_return_if_fail(videofilter->to_width > 0);
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g_return_if_fail(videofilter->to_height > 0);
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videofilter->from_buf_size = (videofilter->from_width * videofilter->from_height *
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videofilter->format->bpp) / 8;
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videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height *
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videofilter->format->bpp) / 8;
|
|
|
|
videofilter->inited = TRUE;
|
|
}
|
|
|
|
GstVideofilterFormat *gst_videofilter_find_format_by_structure (
|
|
GstVideofilter *videofilter, const GstStructure *structure)
|
|
{
|
|
int i;
|
|
GstVideofilterClass *klass;
|
|
GstVideofilterFormat *format;
|
|
gboolean ret;
|
|
|
|
klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
|
|
|
|
g_return_val_if_fail(structure != NULL, NULL);
|
|
|
|
if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0) {
|
|
guint32 fourcc;
|
|
|
|
ret = gst_structure_get_fourcc (structure, "format", &fourcc);
|
|
if (!ret) return NULL;
|
|
for(i=0;i<klass->formats->len;i++){
|
|
guint32 format_fourcc;
|
|
format = g_ptr_array_index(klass->formats,i);
|
|
format_fourcc = GST_STR_FOURCC (format->fourcc);
|
|
if (format->depth == 0 && format_fourcc == fourcc) {
|
|
return format;
|
|
}
|
|
}
|
|
} else if (strcmp (gst_structure_get_name (structure), "video/x-raw-rgb")
|
|
== 0) {
|
|
int bpp;
|
|
int depth;
|
|
int endianness;
|
|
int red_mask;
|
|
int green_mask;
|
|
int blue_mask;
|
|
|
|
ret = gst_structure_get_int (structure, "bpp", &bpp);
|
|
ret &= gst_structure_get_int (structure, "depth", &depth);
|
|
ret &= gst_structure_get_int (structure, "endianness", &endianness);
|
|
ret &= gst_structure_get_int (structure, "red_mask", &red_mask);
|
|
ret &= gst_structure_get_int (structure, "green_mask", &green_mask);
|
|
ret &= gst_structure_get_int (structure, "blue_mask", &blue_mask);
|
|
if (!ret) return NULL;
|
|
for(i=0;i<klass->formats->len;i++){
|
|
format = g_ptr_array_index(klass->formats,i);
|
|
if (format->bpp == bpp && format->depth == depth &&
|
|
format->endianness == endianness && format->red_mask == red_mask &&
|
|
format->green_mask == green_mask && format->blue_mask == blue_mask) {
|
|
return format;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void gst_videofilter_class_add_format(GstVideofilterClass *videofilterclass,
|
|
GstVideofilterFormat *format)
|
|
{
|
|
g_ptr_array_add(videofilterclass->formats, format);
|
|
}
|
|
|
|
void gst_videofilter_class_add_pad_templates (GstVideofilterClass *videofilter_class)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (videofilter_class);
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_pad_template_new("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
|
gst_videofilter_class_get_capslist (videofilter_class)));
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_pad_template_new("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
|
|
gst_videofilter_class_get_capslist (videofilter_class)));
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin *plugin)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (
|
|
GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"gstvideofilter",
|
|
"Video filter parent class",
|
|
plugin_init,
|
|
VERSION,
|
|
"LGPL",
|
|
GST_PACKAGE,
|
|
GST_ORIGIN
|
|
)
|