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Original commit message from CVS: * configure.ac: * docs/plugins/gst-plugins-good-plugins-sections.txt: * ext/Makefile.am: * ext/annodex/Makefile.am: * ext/annodex/gstannodex.c: * ext/annodex/gstannodex.h: * ext/annodex/gstcmmldec.c: * ext/annodex/gstcmmldec.h: * ext/annodex/gstcmmlenc.c: * ext/annodex/gstcmmlenc.h: * ext/annodex/gstcmmlparser.c: * ext/annodex/gstcmmlparser.h: * ext/annodex/gstcmmltag.c: * ext/annodex/gstcmmltag.h: * ext/annodex/gstcmmlutils.c: * ext/annodex/gstcmmlutils.h: * ext/annodex/gstskeldec.c: * ext/annodex/gstskeldec.h: * ext/annodex/gstskeltag.c: * ext/annodex/gstskeltag.h: * tests/check/Makefile.am: * tests/check/elements/cmmldec.c: * tests/check/elements/cmmlenc.c: * tests/check/elements/skeldec.c: Add Annodex elements from Alessendro Decina: skeleton and CMML. Includes tests & docs, oh my! Passes Thomas's -good checklist entirely. Wow.
380 lines
11 KiB
C
380 lines
11 KiB
C
/*
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* gstskeldec.c - GStreamer annodex skeleton decoder
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* Copyright (C) 2005 Alessandro Decina
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*
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* Authors:
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* Alessandro Decina <alessandro@nnva.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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#include <string.h>
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#include "gstskeldec.h"
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#include "gstskeltag.h"
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#include "gstannodex.h"
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GST_DEBUG_CATEGORY (skeldec);
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#define GST_CAT_DEFAULT skeldec
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#define FISHEAD_SIZE 64
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#define FISBONE_MIN_SIZE 52
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enum
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{
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GST_SKEL_TAG_FISHEAD_UTC_LEN = 19
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};
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enum
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{
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LAST_SIGNAL
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};
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static GstElementDetails gst_skel_dec_details = {
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"skeldec: Annodex skeleton stream decoder",
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"Codec/Decoder",
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"Decodes ogg skeleton streams",
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"Alessandro Decina <alessandro@nnva.org>",
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};
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static GstStaticPadTemplate gst_skel_dec_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)TRUE")
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);
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static GstStaticPadTemplate gst_skel_dec_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)FALSE")
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);
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/* GstSkelDec prototypes */
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GST_BOILERPLATE (GstSkelDec, gst_skel_dec, GstElement, GST_TYPE_ELEMENT);
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static gboolean gst_skel_dec_sink_query (GstPad * pad, GstQuery * query);
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static GstStateChangeReturn gst_skel_dec_change_state (GstElement * element,
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GstStateChange transition);
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static GstFlowReturn gst_skel_dec_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_skel_dec_parse_fishead (GstSkelDec * dec,
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GstBuffer * buffer);
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static GstFlowReturn gst_skel_dec_parse_fisbone (GstSkelDec * dec,
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GstBuffer * buffer);
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/* GstSkelDec code */
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static void
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gst_skel_dec_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_skel_dec_sink_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_skel_dec_src_factory));
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gst_element_class_set_details (element_class, &gst_skel_dec_details);
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}
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static void
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gst_skel_dec_class_init (GstSkelDecClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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element_class->change_state = gst_skel_dec_change_state;
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}
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static void
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gst_skel_dec_init (GstSkelDec * dec, GstSkelDecClass * klass)
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{
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dec->sinkpad =
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gst_pad_new_from_static_template (&gst_skel_dec_sink_factory, "sink");
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gst_pad_set_query_function (dec->sinkpad, gst_skel_dec_sink_query);
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gst_pad_set_chain_function (dec->sinkpad, gst_skel_dec_chain);
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gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
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dec->srcpad =
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gst_pad_new_from_static_template (&gst_skel_dec_src_factory, "src");
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gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
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}
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static gboolean
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gst_skel_dec_sink_query (GstPad * pad, GstQuery * query)
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{
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gboolean res = FALSE;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONVERT:
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{
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GstFormat src_format, dest_format;
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gint64 src_val, dest_val;
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gst_query_parse_convert (query, &src_format, &src_val,
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&dest_format, &dest_val);
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if (dest_format == GST_FORMAT_TIME) {
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dest_val = GST_CLOCK_TIME_NONE;
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res = TRUE;
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}
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if (res) {
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gst_query_set_convert (query, src_format, src_val,
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dest_format, dest_val);
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}
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break;
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}
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default:
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break;
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}
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return res;
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}
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static GstStateChangeReturn
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gst_skel_dec_change_state (GstElement * element, GstStateChange transition)
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{
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GstSkelDec *dec = GST_SKEL_DEC (element);
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GstStateChangeReturn res;
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/* handle the upward state changes */
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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dec->major = 0;
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dec->minor = 0;
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break;
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default:
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break;
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}
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res = parent_class->change_state (element, transition);
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/* no need to handle downward state changes */
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return res;
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}
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static GstFlowReturn
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gst_skel_dec_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstSkelDec *dec = GST_SKEL_DEC (GST_PAD_PARENT (pad));
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GstFlowReturn ret;
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gint size = GST_BUFFER_SIZE (buffer);
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guint8 *data = GST_BUFFER_DATA (buffer);
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if (GST_BUFFER_SIZE (buffer) == 0) {
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/* the skeleton EOS has no packet data */
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return GST_FLOW_OK;
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}
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if (size >= GST_SKEL_OGG_FISHEAD_SIZE && !memcmp (data, "fishead\0", 8)) {
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ret = gst_skel_dec_parse_fishead (dec, buffer);
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} else if (size >= 8 && !memcmp (data, "fisbone\0", 8)) {
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ret = gst_skel_dec_parse_fisbone (dec, buffer);
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} else {
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/* maybe it would be better to ignore the packet */
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GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("unknown packet type"));
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ret = GST_FLOW_UNEXPECTED;
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}
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return ret;
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}
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static GstFlowReturn
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gst_skel_dec_parse_fishead (GstSkelDec * dec, GstBuffer * buffer)
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{
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GstTagList *tags;
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guint8 *data = GST_BUFFER_DATA (buffer);
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GstSkelTagFishead *fishead;
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if (GST_BUFFER_SIZE (buffer) != FISHEAD_SIZE)
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goto wrong_size;
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fishead = g_object_new (GST_TYPE_SKEL_TAG_FISHEAD, NULL);
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data += 8;
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fishead->major = GST_READ_UINT16_LE (data);
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data += 2;
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fishead->minor = GST_READ_UINT16_LE (data);
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data += 2;
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fishead->prestime_n = (gint64) GST_READ_UINT64_LE (data);
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data += 8;
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fishead->prestime_d = (gint64) GST_READ_UINT64_LE (data);
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data += 8;
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fishead->basetime_n = (gint64) GST_READ_UINT64_LE (data);
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data += 8;
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fishead->basetime_d = (gint64) GST_READ_UINT64_LE (data);
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data += 8;
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fishead->utc = g_strndup ((gchar *) data, GST_SKEL_TAG_FISHEAD_UTC_LEN);
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GST_INFO_OBJECT (dec, "fishead parsed ("
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"major: %" G_GUINT16_FORMAT " minor: %" G_GUINT16_FORMAT
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" prestime_n: %" G_GINT64_FORMAT " prestime_d: %" G_GINT64_FORMAT
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" basetime_n: %" G_GINT64_FORMAT " basetime_d: %" G_GINT64_FORMAT
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" utc: %s)", fishead->major, fishead->minor, fishead->prestime_n,
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fishead->prestime_d, fishead->basetime_n, fishead->basetime_d,
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fishead->utc);
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/* send the TAG_MESSAGE */
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tags = gst_tag_list_new ();
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gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
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GST_TAG_SKELETON_FISHEAD, fishead, NULL);
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gst_element_found_tags_for_pad (GST_ELEMENT (dec), dec->srcpad, tags);
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g_object_unref (fishead);
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/* forward the fishead */
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gst_buffer_set_caps (buffer,
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gst_static_pad_template_get_caps (&gst_skel_dec_src_factory));
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return gst_pad_push (dec->srcpad, buffer);
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wrong_size:
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GST_ELEMENT_ERROR (dec, STREAM, DECODE,
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(NULL), ("wrong fishead packet size: %d", GST_BUFFER_SIZE (buffer)));
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gst_buffer_unref (buffer);
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return GST_FLOW_ERROR;
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}
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static GstFlowReturn
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gst_skel_dec_parse_fisbone (GstSkelDec * dec, GstBuffer * buffer)
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{
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GstSkelTagFisbone *fisbone;
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guint8 *data;
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gchar *headers;
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gchar **tokens;
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const gchar *content_type;
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GstTagList *tags;
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GValue *val;
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if (GST_BUFFER_SIZE (buffer) < FISBONE_MIN_SIZE)
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goto wrong_size;
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data = GST_BUFFER_DATA (buffer);
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fisbone = g_object_new (GST_TYPE_SKEL_TAG_FISBONE, NULL);
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data += 8;
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fisbone->hdr_offset = GST_READ_UINT32_LE (data);
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data += 4;
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fisbone->serialno = GST_READ_UINT32_LE (data);
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data += 4;
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fisbone->hdr_num = GST_READ_UINT32_LE (data);
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data += 4;
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fisbone->granulerate_n = GST_READ_UINT64_LE (data);
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data += 8;
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fisbone->granulerate_d = GST_READ_UINT64_LE (data);
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data += 8;
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fisbone->start_granule = GST_READ_UINT64_LE (data);
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data += 8;
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fisbone->preroll = GST_READ_UINT32_LE (data);
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data += 4;
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fisbone->granuleshift = GST_READ_UINT8 (data);
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data += 1;
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data += 3; /* padding */
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/* 8 = strlen ("fishead\0") */
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headers = g_strndup ((gchar *) data,
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GST_BUFFER_SIZE (buffer) - 8 - fisbone->hdr_offset);
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fisbone->headers = gst_annodex_parse_headers (headers);
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g_free (headers);
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if (!fisbone->headers)
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goto bad_headers;
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/* check for the mandatory Content-Type header: it MUST be the first
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* header */
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if (fisbone->headers->n_values < 2 ||
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(val = g_value_array_get_nth (fisbone->headers, 0)) == NULL ||
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strcmp (g_value_get_string (val), "Content-Type"))
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goto no_content_type;
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/* get the Content-Type value */
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val = g_value_array_get_nth (fisbone->headers, 1);
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content_type = g_value_get_string (val);
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/* Content-Type must not be empty */
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if (*content_type == '\0')
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goto bad_content_type;
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/* split the content-type field into "content_type; encoding" */
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tokens = g_strsplit (content_type, ";", 2);
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fisbone->content_type = g_strdup (g_strstrip (tokens[0]));
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fisbone->encoding = tokens[1] == NULL ? NULL :
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g_strdup (g_strstrip (tokens[1]));
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g_strfreev (tokens);
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GST_INFO_OBJECT (dec, "fisbone parsed ("
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"serialno %" G_GUINT32_FORMAT " granulerate_n: %" G_GINT64_FORMAT
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" granulerate_d: %" G_GINT64_FORMAT " start_granule: %" G_GINT64_FORMAT
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" preroll: %" G_GUINT32_FORMAT " granuleshift: %d"
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" content-type: %s)",
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fisbone->serialno, fisbone->granulerate_n, fisbone->granulerate_d,
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fisbone->start_granule, fisbone->preroll, fisbone->granuleshift,
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fisbone->content_type);
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/* send the tag message */
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tags = gst_tag_list_new ();
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gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
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GST_TAG_SKELETON_FISBONE, fisbone, NULL);
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gst_element_found_tags_for_pad (GST_ELEMENT (dec), dec->srcpad, tags);
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g_object_unref (fisbone);
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gst_buffer_set_caps (buffer,
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gst_static_pad_template_get_caps (&gst_skel_dec_src_factory));
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return gst_pad_push (dec->srcpad, buffer);
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wrong_size:
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GST_ELEMENT_ERROR (dec, STREAM, DECODE,
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(NULL), ("wrong fisbone size (%d)", GST_BUFFER_SIZE (buffer)));
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gst_buffer_unref (buffer);
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return GST_FLOW_ERROR;
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bad_headers:
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GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("bad fisbone headers"));
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gst_buffer_unref (buffer);
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g_object_unref (fisbone);
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return GST_FLOW_ERROR;
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no_content_type:
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bad_content_type:
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GST_ELEMENT_ERROR (dec, STREAM, DECODE,
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(NULL), ("missing or bad fisbone content-type"));
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gst_buffer_unref (buffer);
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g_object_unref (fisbone);
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return GST_FLOW_ERROR;
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}
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gboolean
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gst_skel_dec_plugin_init (GstPlugin * plugin)
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{
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if (!gst_element_register (plugin, "skeldec", GST_RANK_PRIMARY,
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gst_skel_dec_get_type ()))
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return FALSE;
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gst_tag_register (GST_TAG_SKELETON_FISHEAD, GST_TAG_FLAG_META,
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GST_TYPE_SKEL_TAG_FISHEAD, "skeleton-fishead",
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"annodex skeleton fishead tag", NULL);
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gst_tag_register (GST_TAG_SKELETON_FISBONE, GST_TAG_FLAG_META,
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GST_TYPE_SKEL_TAG_FISBONE, "skeleton-fisbone",
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"annodex skeleton fisbone tag", NULL);
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GST_DEBUG_CATEGORY_INIT (skeldec, "skeldec", 0,
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"annodex skeleton decoding element");
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return TRUE;
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}
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