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Original commit message from CVS: Bring the plugins in sync with the new core capsnego system. Added some features, enhancements...
353 lines
10 KiB
C
353 lines
10 KiB
C
/* -*- c-basic-offset: 2 -*-
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* GStreamer
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* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
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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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#include <string.h>
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include "gstpassthrough.h"
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static GstElementDetails passthrough_details = {
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"Passthrough",
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"Filter/Effect",
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"Transparent filter for audio/raw (boilerplate for effects)",
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VERSION,
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"Thomas <thomas@apestaart.org>, "\
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"Andy Wingo <apwingo@eos.ncsu.edu>",
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"(C) 2001",
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};
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/* Filter 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_SILENT
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};
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static GstPadTemplate*
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passthrough_sink_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (!template) {
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template = gst_padtemplate_new
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("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_caps_append(gst_caps_new ("sink_int", "audio/raw",
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GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
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gst_caps_new ("sink_float", "audio/raw",
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GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)),
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NULL);
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}
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return template;
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}
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static GstPadTemplate*
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passthrough_src_factory (void)
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{
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static GstPadTemplate *template = NULL;
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if (!template)
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template = gst_padtemplate_new
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("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_append (gst_caps_new ("src_float", "audio/raw",
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GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS),
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gst_caps_new ("src_int", "audio/raw",
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GST_AUDIO_INT_PAD_TEMPLATE_PROPS)),
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NULL);
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return template;
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}
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static void passthrough_class_init (GstPassthroughClass *klass);
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static void passthrough_init (GstPassthrough *filter);
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static void passthrough_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void passthrough_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static gint passthrough_parse_caps (GstPassthrough *filter, GstCaps *caps);
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static void passthrough_chain (GstPad *pad, GstBuffer *buf);
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static void inline passthrough_fast_float_chain (gfloat* data, guint numsamples);
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static void inline passthrough_fast_16bit_chain (gint16* data, guint numsamples);
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static void inline passthrough_fast_8bit_chain (gint8* data, guint numsamples);
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static GstElementClass *parent_class = NULL;
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//static guint gst_filter_signals[LAST_SIGNAL] = { 0 };
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static GstBufferPool*
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passthrough_get_bufferpool (GstPad *pad)
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{
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GstPassthrough *filter;
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filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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return gst_pad_get_bufferpool (filter->srcpad);
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}
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/*
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static GstPadNegotiateReturn
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passthrough_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstPassthrough* filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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if (*caps==NULL)
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return GST_PAD_NEGOTIATE_FAIL;
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if (passthrough_parse_caps(filter, *caps))
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return GST_PAD_NEGOTIATE_FAIL;
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return gst_pad_negotiate_proxy(pad,filter->sinkpad,caps);
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}
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static GstPadNegotiateReturn
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passthrough_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstPassthrough* filter = GST_PASSTHROUGH (gst_pad_get_parent (pad));
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if (*caps==NULL)
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return GST_PAD_NEGOTIATE_FAIL;
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if (passthrough_parse_caps(filter, *caps))
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return GST_PAD_NEGOTIATE_FAIL;
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return gst_pad_negotiate_proxy(pad,filter->srcpad,caps);
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}
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*/
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static gint
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passthrough_parse_caps (GstPassthrough *filter, GstCaps *caps)
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{
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const gchar *format;
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g_return_val_if_fail(filter!=NULL,-1);
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g_return_val_if_fail(caps!=NULL,-1);
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format = gst_caps_get_string(caps, "format");
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filter->rate = gst_caps_get_int (caps, "rate");
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filter->channels = gst_caps_get_int (caps, "channels");
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if (strcmp(format, "int")==0) {
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filter->format = GST_PASSTHROUGH_FORMAT_INT;
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filter->width = gst_caps_get_int (caps, "width");
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filter->depth = gst_caps_get_int (caps, "depth");
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filter->law = gst_caps_get_int (caps, "law");
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filter->endianness = gst_caps_get_int (caps, "endianness");
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filter->is_signed = gst_caps_get_int (caps, "signed");
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if (!filter->silent) {
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g_print ("Passthrough : channels %d, rate %d\n",
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filter->channels, filter->rate);
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g_print ("Passthrough : format int, bit width %d, endianness %d, signed %s\n",
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filter->width, filter->endianness, filter->is_signed ? "yes" : "no");
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}
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} else if (strcmp(format, "float")==0) {
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filter->format = GST_PASSTHROUGH_FORMAT_FLOAT;
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filter->layout = gst_caps_get_string(caps, "layout");
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filter->intercept = gst_caps_get_float(caps, "intercept");
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filter->slope = gst_caps_get_float(caps, "slope");
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if (!filter->silent) {
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g_print ("Passthrough : channels %d, rate %d\n",
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filter->channels, filter->rate);
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g_print ("Passthrough : format float, layout %s, intercept %f, slope %f\n",
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filter->layout, filter->intercept, filter->slope);
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}
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} else {
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return -1;
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}
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return 0;
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}
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GType
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gst_passthrough_get_type(void) {
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static GType passthrough_type = 0;
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if (!passthrough_type) {
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static const GTypeInfo passthrough_info = {
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sizeof(GstPassthroughClass), NULL,
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NULL,
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(GClassInitFunc)passthrough_class_init,
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NULL,
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NULL,
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sizeof(GstPassthrough),
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0,
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(GInstanceInitFunc)passthrough_init,
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};
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passthrough_type = g_type_register_static(GST_TYPE_ELEMENT, "GstPassthrough", &passthrough_info, 0);
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}
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return passthrough_type;
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}
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static void
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passthrough_class_init (GstPassthroughClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_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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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SILENT,
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g_param_spec_boolean("silent","silent","silent",
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TRUE,G_PARAM_READWRITE)); // CHECKME
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gobject_class->set_property = passthrough_set_property;
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gobject_class->get_property = passthrough_get_property;
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}
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static void
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passthrough_init (GstPassthrough *filter)
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{
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filter->sinkpad = gst_pad_new_from_template(passthrough_sink_factory (),"sink");
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//gst_pad_set_negotiate_function(filter->sinkpad,passthrough_negotiate_sink);
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gst_pad_set_bufferpool_function(filter->sinkpad,passthrough_get_bufferpool);
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filter->srcpad = gst_pad_new_from_template(passthrough_src_factory (),"src");
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//gst_pad_set_negotiate_function(filter->srcpad,passthrough_negotiate_src);
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gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad);
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gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad);
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gst_pad_set_chain_function(filter->sinkpad,passthrough_chain);
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filter->silent = FALSE;
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}
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static void
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passthrough_chain (GstPad *pad, GstBuffer *buf)
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{
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GstPassthrough *filter;
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gint16 *int_data;
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gfloat *float_data;
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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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filter = GST_PASSTHROUGH(GST_OBJECT_PARENT (pad));
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g_return_if_fail(filter != NULL);
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g_return_if_fail(GST_IS_PASSTHROUGH(filter));
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switch (filter->format) {
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case GST_PASSTHROUGH_FORMAT_INT:
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int_data = (gint16 *)GST_BUFFER_DATA(buf);
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switch (filter->width) {
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case 16:
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passthrough_fast_16bit_chain(int_data,GST_BUFFER_SIZE(buf)/2);
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break;
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case 8:
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passthrough_fast_8bit_chain((gint8*)int_data,GST_BUFFER_SIZE(buf));
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break;
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}
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break;
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case GST_PASSTHROUGH_FORMAT_FLOAT:
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float_data = (gfloat *)GST_BUFFER_DATA(buf);
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passthrough_fast_float_chain(float_data,GST_BUFFER_SIZE(buf)/sizeof(float));
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break;
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}
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gst_pad_push(filter->srcpad,buf);
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}
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static void inline
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passthrough_fast_float_chain(gfloat* data,
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guint num_samples)
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#include "filter.func"
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static void inline
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passthrough_fast_16bit_chain(gint16* data,
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guint num_samples)
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#include "filter.func"
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static void inline
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passthrough_fast_8bit_chain(gint8* data,
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guint num_samples)
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#include "filter.func"
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static void
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passthrough_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstPassthrough *filter;
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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_PASSTHROUGH(object));
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filter = GST_PASSTHROUGH(object);
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switch (prop_id)
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{
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case ARG_SILENT:
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filter->silent = g_value_get_boolean (value);
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break;
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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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passthrough_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstPassthrough *filter;
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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_PASSTHROUGH(object));
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filter = GST_PASSTHROUGH(object);
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switch (prop_id) {
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case ARG_SILENT:
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g_value_set_boolean (value, filter->silent);
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break;
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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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static gboolean
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plugin_init (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *factory;
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factory = gst_elementfactory_new("passthrough",GST_TYPE_PASSTHROUGH,
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&passthrough_details);
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g_return_val_if_fail(factory != NULL, FALSE);
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gst_elementfactory_add_padtemplate (factory, passthrough_src_factory ());
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gst_elementfactory_add_padtemplate (factory, passthrough_sink_factory ());
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"passthrough",
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plugin_init
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};
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