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83676ebd17
Original commit message from CVS: * gst/avi/gstavidemux.c: (gst_avi_demux_combine_flows), (gst_avi_demux_process_next_entry), (gst_avi_demux_stream_data), (gst_avi_demux_loop), (gst_avi_demux_chain): Fix combined flow return. Fixes #412608.
3799 lines
110 KiB
C
3799 lines
110 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
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* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Element-Checklist-Version: 5 */
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/**
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* SECTION:element-avidemux
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*
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* <refsect2>
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* <para>
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* Demuxes an .avi file into raw or compressed audio and/or video streams.
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* </para>
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* <para>
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* This element supports both push and pull-based scheduling, depending on the
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* capabilities of the upstream elements.
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* </para>
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* <title>Example launch line</title>
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* <para>
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* <programlisting>
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* gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
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* </programlisting>
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* Play (parse and decode) an .avi file and try to output it to
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* an automatically detected soundcard and videosink. If the AVI file contains
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* compressed audio or video data, this will only work if you have the
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* right decoder elements/plugins installed.
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* </para>
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* </refsect2>
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*
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* Last reviewed on 2006-12-29 (0.10.6)
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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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#include "gst/riff/riff-media.h"
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#include "gstavidemux.h"
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#include "avi-ids.h"
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#include <gst/gst-i18n-plugin.h>
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#include <gst/base/gstadapter.h>
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GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
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#define GST_CAT_DEFAULT avidemux_debug
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GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
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static GstStaticPadTemplate sink_templ = 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 ("video/x-msvideo")
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);
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static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_init (GstAviDemux * avi);
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static void gst_avi_demux_finalize (GObject * object);
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static void gst_avi_demux_reset (GstAviDemux * avi);
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#if 0
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static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
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#endif
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static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
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#if 0
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static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
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#endif
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static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
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static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
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static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
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static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
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GstEvent * event);
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static void gst_avi_demux_loop (GstPad * pad);
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static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
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static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
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gboolean active);
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static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
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static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
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static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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/* GObject methods */
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GType
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gst_avi_demux_get_type (void)
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{
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static GType avi_demux_type = 0;
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if (!avi_demux_type) {
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static const GTypeInfo avi_demux_info = {
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sizeof (GstAviDemuxClass),
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(GBaseInitFunc) gst_avi_demux_base_init,
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NULL,
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(GClassInitFunc) gst_avi_demux_class_init,
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NULL,
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NULL,
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sizeof (GstAviDemux),
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0,
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(GInstanceInitFunc) gst_avi_demux_init,
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};
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avi_demux_type =
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g_type_register_static (GST_TYPE_ELEMENT,
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"GstAviDemux", &avi_demux_info, 0);
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}
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return avi_demux_type;
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}
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static void
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gst_avi_demux_base_init (GstAviDemuxClass * klass)
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{
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static const GstElementDetails gst_avi_demux_details =
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GST_ELEMENT_DETAILS ("Avi demuxer",
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"Codec/Demuxer",
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"Demultiplex an avi file into audio and video",
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"Erik Walthinsen <omega@cse.ogi.edu>\n"
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"Wim Taymans <wim.taymans@chello.be>\n"
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"Ronald Bultje <rbultje@ronald.bitfreak.net>");
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstPadTemplate *videosrctempl, *audiosrctempl;
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GstCaps *audcaps, *vidcaps;
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audcaps = gst_riff_create_audio_template_caps ();
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gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
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audiosrctempl = gst_pad_template_new ("audio_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
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vidcaps = gst_riff_create_video_template_caps ();
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gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
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gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
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videosrctempl = gst_pad_template_new ("video_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
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gst_element_class_add_pad_template (element_class, audiosrctempl);
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gst_element_class_add_pad_template (element_class, videosrctempl);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_templ));
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gst_element_class_set_details (element_class, &gst_avi_demux_details);
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}
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static void
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gst_avi_demux_class_init (GstAviDemuxClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
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0, "Demuxer for AVI streams");
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_avi_demux_finalize;
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
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}
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static void
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gst_avi_demux_init (GstAviDemux * avi)
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{
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avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
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gst_pad_set_activate_function (avi->sinkpad, gst_avi_demux_sink_activate);
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gst_pad_set_activatepull_function (avi->sinkpad,
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gst_avi_demux_sink_activate_pull);
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gst_pad_set_activatepush_function (avi->sinkpad, gst_avi_demux_activate_push);
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gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
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gst_pad_set_chain_function (avi->sinkpad, gst_avi_demux_chain);
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avi->adapter = gst_adapter_new ();
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gst_avi_demux_reset (avi);
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}
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static void
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gst_avi_demux_finalize (GObject * object)
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{
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GstAviDemux *avi = GST_AVI_DEMUX (object);
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GST_DEBUG ("AVI: finalize");
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g_object_unref (avi->adapter);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_avi_demux_reset (GstAviDemux * avi)
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{
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gint i;
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for (i = 0; i < avi->num_streams; i++) {
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g_free (avi->stream[i].strh);
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g_free (avi->stream[i].strf.data);
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if (avi->stream[i].name)
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g_free (avi->stream[i].name);
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if (avi->stream[i].initdata)
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gst_buffer_unref (avi->stream[i].initdata);
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if (avi->stream[i].extradata)
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gst_buffer_unref (avi->stream[i].extradata);
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if (avi->stream[i].pad) {
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gst_pad_set_active (avi->stream[i].pad, FALSE);
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gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
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}
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if (avi->stream[i].taglist) {
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gst_tag_list_free (avi->stream[i].taglist);
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avi->stream[i].taglist = NULL;
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}
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}
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memset (&avi->stream, 0, sizeof (avi->stream));
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avi->num_streams = 0;
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avi->num_v_streams = 0;
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avi->num_a_streams = 0;
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avi->state = GST_AVI_DEMUX_START;
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avi->offset = 0;
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g_free (avi->index_entries);
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avi->index_entries = NULL;
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avi->index_size = 0;
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avi->index_offset = 0;
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avi->current_entry = 0;
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g_free (avi->avih);
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avi->avih = NULL;
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if (avi->seek_event)
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gst_event_unref (avi->seek_event);
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avi->seek_event = NULL;
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if (avi->globaltags)
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gst_tag_list_free (avi->globaltags);
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avi->globaltags = NULL;
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avi->got_tags = FALSE;
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avi->have_eos = FALSE;
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gst_adapter_clear (avi->adapter);
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gst_segment_init (&avi->segment, GST_FORMAT_TIME);
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}
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/* Index helper */
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static gst_avi_index_entry *
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gst_avi_demux_index_last (GstAviDemux * avi, gint stream_nr)
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{
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gint i;
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gst_avi_index_entry *result = NULL;
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for (i = avi->index_size - 1; i >= 0; i--) {
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if (avi->index_entries[i].stream_nr == stream_nr) {
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result = &avi->index_entries[i];
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break;
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}
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}
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return result;
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}
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static gst_avi_index_entry *
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gst_avi_demux_index_next (GstAviDemux * avi, gint stream_nr, gint start)
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{
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gint i;
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gst_avi_index_entry *result = NULL;
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for (i = start; i < avi->index_size; i++) {
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if (avi->index_entries[i].stream_nr == stream_nr) {
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result = &avi->index_entries[i];
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break;
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}
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}
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return result;
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}
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/*
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* gst_avi_index_entry:
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* @avi: Avi object
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* @stream_nr: stream number
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* @time: seek time position
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* @flags: index entry flags to match
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*
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* Finds the index entry which time is less or equal than the requested time.
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*
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* Returns: the found index entry or %NULL
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*/
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static gst_avi_index_entry *
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gst_avi_demux_index_entry_for_time (GstAviDemux * avi,
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gint stream_nr, guint64 time, guchar flags)
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{
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gst_avi_index_entry *entry = NULL, *last_entry = NULL;
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gint i;
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GST_LOG_OBJECT (avi, "stream_nr:%d , time:%" GST_TIME_FORMAT " flags:%x",
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stream_nr, GST_TIME_ARGS (time), flags);
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i = -1;
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do {
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/* get next entry for given stream */
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entry = gst_avi_demux_index_next (avi, stream_nr, i + 1);
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if (!entry)
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break;
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i = entry->index_nr;
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if (entry->ts <= time && (entry->flags & flags) == flags)
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last_entry = entry;
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GST_LOG_OBJECT (avi,
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"looking at entry %d / ts:%" GST_TIME_FORMAT " / dur:%" GST_TIME_FORMAT
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" flags:%02x", i, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur),
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entry->flags);
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} while (entry->ts < time);
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return last_entry;
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}
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|
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/* GstElement methods */
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#if 0
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static const GstFormat *
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gst_avi_demux_get_src_formats (GstPad * pad)
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{
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avi_stream_context *stream = gst_pad_get_element_private (pad);
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static const GstFormat src_a_formats[] = {
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GST_FORMAT_TIME,
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GST_FORMAT_BYTES,
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GST_FORMAT_DEFAULT,
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0
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};
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static const GstFormat src_v_formats[] = {
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GST_FORMAT_TIME,
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GST_FORMAT_DEFAULT,
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0
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};
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return (stream->strh->type == GST_RIFF_FCC_auds ?
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src_a_formats : src_v_formats);
|
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}
|
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#endif
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static gboolean
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gst_avi_demux_src_convert (GstPad * pad,
|
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GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
|
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{
|
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gboolean res = TRUE;
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GstAviDemux *avidemux = GST_AVI_DEMUX (gst_pad_get_parent (pad));
|
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avi_stream_context *stream = gst_pad_get_element_private (pad);
|
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GST_LOG_OBJECT (avidemux,
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"Received src_format:%s, src_value:%" G_GUINT64_FORMAT
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", dest_format:%s", gst_format_get_name (src_format), src_value,
|
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gst_format_get_name (*dest_format));
|
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|
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if (src_format == *dest_format) {
|
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*dest_value = src_value;
|
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goto done;
|
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}
|
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if (!stream->strh || !stream->strf.data) {
|
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res = FALSE;
|
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goto done;
|
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}
|
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if (stream->strh->type == GST_RIFF_FCC_vids &&
|
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(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES)) {
|
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res = FALSE;
|
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goto done;
|
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}
|
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|
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switch (src_format) {
|
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case GST_FORMAT_TIME:
|
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switch (*dest_format) {
|
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case GST_FORMAT_BYTES:
|
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*dest_value = gst_util_uint64_scale (src_value,
|
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(guint64) stream->strf.auds->av_bps, GST_SECOND);
|
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break;
|
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case GST_FORMAT_DEFAULT:
|
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*dest_value = gst_util_uint64_scale (src_value, stream->strh->rate,
|
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stream->strh->scale * GST_SECOND);
|
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break;
|
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default:
|
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res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
case GST_FORMAT_BYTES:
|
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switch (*dest_format) {
|
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case GST_FORMAT_TIME:
|
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if (stream->strf.auds->av_bps != 0) {
|
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*dest_value = gst_util_uint64_scale (src_value, GST_SECOND,
|
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(guint64) stream->strf.auds->av_bps);
|
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} else
|
||
res = FALSE;
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
case GST_FORMAT_DEFAULT:
|
||
switch (*dest_format) {
|
||
case GST_FORMAT_TIME:
|
||
*dest_value = gst_util_uint64_scale (src_value,
|
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stream->strh->scale * GST_SECOND, (guint64) stream->strh->rate);
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
}
|
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|
||
done:
|
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GST_LOG_OBJECT (avidemux,
|
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"Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
|
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gst_format_get_name (*dest_format), *dest_value);
|
||
gst_object_unref (avidemux);
|
||
return res;
|
||
}
|
||
|
||
static const GstQueryType *
|
||
gst_avi_demux_get_src_query_types (GstPad * pad)
|
||
{
|
||
static const GstQueryType src_types[] = {
|
||
GST_QUERY_POSITION,
|
||
GST_QUERY_DURATION,
|
||
0
|
||
};
|
||
|
||
return src_types;
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
|
||
{
|
||
gboolean res = TRUE;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
||
|
||
avi_stream_context *stream = gst_pad_get_element_private (pad);
|
||
|
||
if (!stream->strh || !stream->strf.data)
|
||
return gst_pad_query_default (pad, query);
|
||
|
||
switch (GST_QUERY_TYPE (query)) {
|
||
case GST_QUERY_POSITION:{
|
||
gint64 pos = 0;
|
||
|
||
GST_DEBUG ("pos query for stream %d: frames %d, bytes %" G_GUINT64_FORMAT,
|
||
stream->num, stream->current_frame, stream->current_byte);
|
||
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
if (stream->is_vbr) {
|
||
/* VBR */
|
||
pos = gst_util_uint64_scale ((gint64) stream->current_frame *
|
||
stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
|
||
GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
|
||
GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
|
||
} else if (stream->strf.auds->av_bps != 0) {
|
||
/* CBR */
|
||
pos = gst_util_uint64_scale (stream->current_byte, GST_SECOND,
|
||
(guint64) stream->strf.auds->av_bps);
|
||
GST_DEBUG_OBJECT (avi,
|
||
"CBR convert bytes %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT,
|
||
stream->current_byte, GST_TIME_ARGS (pos));
|
||
} else if (stream->total_frames != 0 && stream->total_bytes != 0) {
|
||
/* calculate timestamps based on percentage of length */
|
||
guint64 xlen = avi->avih->us_frame *
|
||
avi->avih->tot_frames * GST_USECOND;
|
||
|
||
if (stream->is_vbr) {
|
||
pos = gst_util_uint64_scale (xlen, stream->current_frame,
|
||
stream->total_frames);
|
||
GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
|
||
GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
|
||
} else {
|
||
pos = gst_util_uint64_scale (xlen, stream->current_byte,
|
||
stream->total_bytes);
|
||
GST_DEBUG_OBJECT (avi, "CBR perc convert bytes %" G_GUINT64_FORMAT
|
||
", time %" GST_TIME_FORMAT, stream->current_byte,
|
||
GST_TIME_ARGS (pos));
|
||
}
|
||
} else {
|
||
/* we don't know */
|
||
res = FALSE;
|
||
}
|
||
} else {
|
||
if (stream->strh->rate != 0) {
|
||
pos = gst_util_uint64_scale ((guint64) stream->current_frame *
|
||
stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
|
||
} else {
|
||
pos = stream->current_frame * avi->avih->us_frame * GST_USECOND;
|
||
}
|
||
}
|
||
if (res) {
|
||
GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
|
||
gst_query_set_position (query, GST_FORMAT_TIME, pos);
|
||
} else
|
||
GST_WARNING ("pos query failed");
|
||
break;
|
||
}
|
||
case GST_QUERY_DURATION:
|
||
{
|
||
if (stream->strh->type != GST_RIFF_FCC_auds &&
|
||
stream->strh->type != GST_RIFF_FCC_vids) {
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
gst_query_set_duration (query, GST_FORMAT_TIME, stream->duration);
|
||
break;
|
||
}
|
||
default:
|
||
res = gst_pad_query_default (pad, query);
|
||
break;
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
#if 0
|
||
static const GstEventMask *
|
||
gst_avi_demux_get_event_mask (GstPad * pad)
|
||
{
|
||
static const GstEventMask masks[] = {
|
||
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
|
||
{0,}
|
||
};
|
||
|
||
return masks;
|
||
}
|
||
#endif
|
||
|
||
static gboolean
|
||
gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
|
||
{
|
||
gboolean res = TRUE;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
|
||
|
||
switch (GST_EVENT_TYPE (event)) {
|
||
case GST_EVENT_SEEK:
|
||
/* handle seeking */
|
||
res = gst_avi_demux_handle_seek (avi, pad, event);
|
||
break;
|
||
case GST_EVENT_QOS:
|
||
/* FIXME, we can do something clever here like skip to the next keyframe
|
||
* based on the QoS values. */
|
||
res = FALSE;
|
||
break;
|
||
default:
|
||
/* most other events are not very usefull */
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
gst_event_unref (event);
|
||
return res;
|
||
}
|
||
|
||
/* streaming helper (push) */
|
||
|
||
/*
|
||
* gst_avi_demux_peek_chunk_info:
|
||
* @avi: Avi object
|
||
* @tag: holder for tag
|
||
* @size: holder for tag size
|
||
*
|
||
* Peek next chunk info (tag and size)
|
||
*
|
||
* Returns: TRUE when one chunk info has been got
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
||
{
|
||
const guint8 *data = NULL;
|
||
|
||
if (gst_adapter_available (avi->adapter) < 8) {
|
||
return FALSE;
|
||
}
|
||
|
||
data = gst_adapter_peek (avi->adapter, 8);
|
||
*tag = GST_READ_UINT32_LE (data);
|
||
*size = GST_READ_UINT32_LE (data + 4);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_peek_chunk:
|
||
* @avi: Avi object
|
||
* @tag: holder for tag
|
||
* @size: holder for tag size
|
||
*
|
||
* Peek enough data for one full chunk
|
||
*
|
||
* Returns: %TRUE when one chunk has been got
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
||
{
|
||
guint32 peek_size = 0;
|
||
gint available;
|
||
|
||
if (!gst_avi_demux_peek_chunk_info (avi, tag, size)) {
|
||
return FALSE;
|
||
}
|
||
/* FIXME: shouldn't this check go to gst_avi_demux_peek_chunk_info() already */
|
||
if (!(*size) || (*size) == -1) {
|
||
GST_INFO ("Invalid chunk size %d for tag %" GST_FOURCC_FORMAT,
|
||
*size, GST_FOURCC_ARGS (*tag));
|
||
return FALSE;
|
||
}
|
||
peek_size = (*size + 1) & ~1;
|
||
available = gst_adapter_available (avi->adapter);
|
||
|
||
GST_DEBUG ("Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
|
||
", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
|
||
|
||
if (available >= (8 + peek_size)) {
|
||
return TRUE;
|
||
} else {
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/* AVI init */
|
||
|
||
/*
|
||
* gst_avi_demux_parse_file_header:
|
||
* @element: caller element (used for errors/debug).
|
||
* @buf: input data to be used for parsing.
|
||
*
|
||
* "Open" a RIFF/AVI file. The buffer should be at least 12
|
||
* bytes long. Takes ownership of @buf.
|
||
*
|
||
* Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
|
||
* Throws an error, caller should error out (fatal).
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
|
||
{
|
||
guint32 doctype;
|
||
|
||
/* riff_parse posts an error */
|
||
if (!gst_riff_parse_file_header (element, buf, &doctype))
|
||
return FALSE;
|
||
|
||
if (doctype != GST_RIFF_RIFF_AVI)
|
||
goto not_avi;
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
not_avi:
|
||
{
|
||
GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
|
||
("File is not an AVI file: %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (doctype)));
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read AVI file tag when streaming
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_init_push (GstAviDemux * avi)
|
||
{
|
||
if (gst_adapter_available (avi->adapter) >= 12) {
|
||
GstBuffer *tmp;
|
||
|
||
tmp = gst_adapter_take_buffer (avi->adapter, 12);
|
||
|
||
GST_DEBUG ("Parsing avi header");
|
||
if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
GST_DEBUG ("header ok");
|
||
avi->offset += 12;
|
||
|
||
avi->state = GST_AVI_DEMUX_HEADER;
|
||
}
|
||
return GST_FLOW_OK;
|
||
}
|
||
|
||
/*
|
||
* Read AVI file tag
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_init_pull (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
GstBuffer *buf = NULL;
|
||
|
||
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
return res;
|
||
else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
|
||
goto wrong_header;
|
||
|
||
avi->offset += 12;
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
wrong_header:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "error parsing file header");
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
/* AVI header handling */
|
||
|
||
/*
|
||
* gst_avi_demux_parse_avih:
|
||
* @element: caller element (used for errors/debug).
|
||
* @buf: input data to be used for parsing.
|
||
* @avih: pointer to structure (filled in by function) containing
|
||
* stream information (such as flags, number of streams, etc.).
|
||
*
|
||
* Read 'avih' header. Discards buffer after use.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Throws an error if
|
||
* the header is invalid. The caller should error out
|
||
* (fatal).
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_avih (GstElement * element,
|
||
GstBuffer * buf, gst_riff_avih ** _avih)
|
||
{
|
||
gst_riff_avih *avih;
|
||
|
||
if (buf == NULL)
|
||
goto no_buffer;
|
||
|
||
if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
|
||
goto avih_too_small;
|
||
|
||
avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
|
||
|
||
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
||
avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
|
||
avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
|
||
avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
|
||
avih->flags = GUINT32_FROM_LE (avih->flags);
|
||
avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
|
||
avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
|
||
avih->streams = GUINT32_FROM_LE (avih->streams);
|
||
avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
|
||
avih->width = GUINT32_FROM_LE (avih->width);
|
||
avih->height = GUINT32_FROM_LE (avih->height);
|
||
avih->scale = GUINT32_FROM_LE (avih->scale);
|
||
avih->rate = GUINT32_FROM_LE (avih->rate);
|
||
avih->start = GUINT32_FROM_LE (avih->start);
|
||
avih->length = GUINT32_FROM_LE (avih->length);
|
||
#endif
|
||
|
||
/* debug stuff */
|
||
GST_INFO_OBJECT (element, "avih tag found:");
|
||
GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
|
||
GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
|
||
GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
|
||
GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
|
||
GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
|
||
GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
|
||
GST_INFO_OBJECT (element, " streams %u", avih->streams);
|
||
GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
|
||
GST_INFO_OBJECT (element, " width %u", avih->width);
|
||
GST_INFO_OBJECT (element, " height %u", avih->height);
|
||
GST_INFO_OBJECT (element, " scale %u", avih->scale);
|
||
GST_INFO_OBJECT (element, " rate %u", avih->rate);
|
||
GST_INFO_OBJECT (element, " start %u", avih->start);
|
||
GST_INFO_OBJECT (element, " length %u", avih->length);
|
||
|
||
*_avih = avih;
|
||
gst_buffer_unref (buf);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
no_buffer:
|
||
{
|
||
GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
|
||
return FALSE;
|
||
}
|
||
avih_too_small:
|
||
{
|
||
GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
|
||
("Too small avih (%d available, %d needed)",
|
||
GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_superindex:
|
||
* @avi: caller element (used for debugging/errors).
|
||
* @buf: input data to use for parsing.
|
||
* @locations: locations in the file (byte-offsets) that contain
|
||
* the actual indexes (see get_avi_demux_parse_subindex()).
|
||
* The array ends with GST_BUFFER_OFFSET_NONE.
|
||
*
|
||
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
|
||
* on error, but they are not fatal.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_superindex (GstAviDemux * avi,
|
||
GstBuffer * buf, guint64 ** _indexes)
|
||
{
|
||
guint8 *data;
|
||
guint16 bpe = 16;
|
||
guint32 num, i;
|
||
guint64 *indexes;
|
||
guint size;
|
||
|
||
*_indexes = NULL;
|
||
|
||
size = buf ? GST_BUFFER_SIZE (buf) : 0;
|
||
if (size < 24)
|
||
goto too_small;
|
||
|
||
data = GST_BUFFER_DATA (buf);
|
||
|
||
/* check type of index. The opendml2 specs state that
|
||
* there should be 4 dwords per array entry. Type can be
|
||
* either frame or field (and we don't care). */
|
||
if (GST_READ_UINT16_LE (data) != 4 ||
|
||
(data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Superindex for stream has unexpected "
|
||
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
||
GST_READ_UINT16_LE (data), data[2], data[3]);
|
||
bpe = GST_READ_UINT16_LE (data) * 4;
|
||
}
|
||
num = GST_READ_UINT32_LE (&data[4]);
|
||
|
||
indexes = g_new (guint64, num + 1);
|
||
for (i = 0; i < num; i++) {
|
||
if (size < 24 + bpe * (i + 1))
|
||
break;
|
||
indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
|
||
}
|
||
indexes[i] = GST_BUFFER_OFFSET_NONE;
|
||
*_indexes = indexes;
|
||
|
||
gst_buffer_unref (buf);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
too_small:
|
||
{
|
||
GST_ERROR_OBJECT (avi,
|
||
"Not enough data to parse superindex (%d available, 24 needed)", size);
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_subindex:
|
||
* @avi: Avi object
|
||
* @buf: input data to use for parsing.
|
||
* @stream: stream context.
|
||
* @entries_list: a list (returned by the function) containing all the
|
||
* indexes parsed in this specific subindex. The first
|
||
* entry is also a pointer to allocated memory that needs
|
||
* to be free´ed. May be NULL if no supported indexes were
|
||
* found.
|
||
*
|
||
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
||
* The buffer will be discarded after use.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
|
||
* throw an error, caller should bail out asap.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_subindex (GstAviDemux * avi,
|
||
GstBuffer * buf, avi_stream_context * stream, GList ** _entries_list)
|
||
{
|
||
guint8 *data = GST_BUFFER_DATA (buf);
|
||
guint16 bpe;
|
||
guint32 num, i;
|
||
guint64 baseoff;
|
||
gst_avi_index_entry *entries, *entry;
|
||
GList *entries_list = NULL;
|
||
GstFormat format = GST_FORMAT_TIME;
|
||
guint size;
|
||
|
||
*_entries_list = NULL;
|
||
|
||
size = buf ? GST_BUFFER_SIZE (buf) : 0;
|
||
|
||
/* check size */
|
||
if (size < 24)
|
||
goto too_small;
|
||
|
||
/* We don't support index-data yet */
|
||
if (data[3] & 0x80)
|
||
goto not_implemented;
|
||
|
||
/* check type of index. The opendml2 specs state that
|
||
* there should be 4 dwords per array entry. Type can be
|
||
* either frame or field (and we don't care). */
|
||
bpe = (data[2] & 0x01) ? 12 : 8;
|
||
if (GST_READ_UINT16_LE (data) != bpe / 4 ||
|
||
(data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Superindex for stream %d has unexpected "
|
||
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
||
stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
|
||
bpe = GST_READ_UINT16_LE (data) * 4;
|
||
}
|
||
num = GST_READ_UINT32_LE (&data[4]);
|
||
baseoff = GST_READ_UINT64_LE (&data[12]);
|
||
|
||
if (!(entries = g_try_new (gst_avi_index_entry, num)))
|
||
goto out_of_mem;
|
||
|
||
for (i = 0; i < num; i++) {
|
||
gint64 next_ts;
|
||
|
||
entry = &entries[i];
|
||
|
||
if (size < 24 + bpe * (i + 1))
|
||
break;
|
||
|
||
/* fill in */
|
||
entry->offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
|
||
entry->size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
|
||
entry->flags =
|
||
(entry->size & 0x80000000) ? 0 : GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
||
entry->size &= ~0x80000000;
|
||
entry->index_nr = i;
|
||
entry->stream_nr = stream->num;
|
||
|
||
/* stream duration unknown, now we can calculate it */
|
||
if (stream->idx_duration == -1)
|
||
stream->idx_duration = 0;
|
||
|
||
/* timestamps */
|
||
entry->ts = stream->idx_duration;
|
||
if (stream->is_vbr) {
|
||
/* VBR get next timestamp */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames + 1, &format, &next_ts);
|
||
} else {
|
||
/* CBR get next timestamp */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes + entry->size, &format, &next_ts);
|
||
}
|
||
/* duration is next - current */
|
||
entry->dur = next_ts - entry->ts;
|
||
|
||
/* stream position */
|
||
entry->bytes_before = stream->total_bytes;
|
||
entry->frames_before = stream->total_frames;
|
||
|
||
stream->total_bytes += entry->size;
|
||
stream->total_frames++;
|
||
stream->idx_duration = next_ts;
|
||
|
||
entries_list = g_list_prepend (entries_list, entry);
|
||
}
|
||
|
||
GST_LOG_OBJECT (avi, "Read %d index entries", i);
|
||
|
||
gst_buffer_unref (buf);
|
||
|
||
if (i > 0) {
|
||
*_entries_list = g_list_reverse (entries_list);
|
||
} else {
|
||
g_free (entries);
|
||
}
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
too_small:
|
||
{
|
||
GST_ERROR_OBJECT (avi,
|
||
"Not enough data to parse subindex (%d available, 24 needed)", size);
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
return TRUE; /* continue */
|
||
}
|
||
not_implemented:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
|
||
("Subindex-is-data is not implemented"));
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
out_of_mem:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
||
("Cannot allocate memory for %lu*%lu=%lu bytes",
|
||
sizeof (gst_avi_index_entry), num,
|
||
sizeof (gst_avi_index_entry) * num));
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/*
|
||
* Read AVI index when streaming
|
||
*/
|
||
static void
|
||
gst_avi_demux_read_subindexes_push (GstAviDemux * avi,
|
||
GList ** index, GList ** alloc_list)
|
||
{
|
||
GList *list = NULL;
|
||
guint32 tag = 0, size;
|
||
GstBuffer *buf = NULL;
|
||
gint i, n;
|
||
|
||
GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_push for %d streams",
|
||
avi->num_streams);
|
||
|
||
for (n = 0; n < avi->num_streams; n++) {
|
||
avi_stream_context *stream = &avi->stream[n];
|
||
|
||
for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
|
||
if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
|
||
continue;
|
||
else if (tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
|
||
'0' + stream->num % 10)) {
|
||
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
||
GST_FOURCC_ARGS (tag));
|
||
continue;
|
||
}
|
||
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
|
||
buf = gst_buffer_new ();
|
||
GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
|
||
GST_BUFFER_SIZE (buf) = size;
|
||
|
||
if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
|
||
continue;
|
||
if (list) {
|
||
GST_DEBUG_OBJECT (avi, " adding %d entries", g_list_length (list));
|
||
*alloc_list = g_list_append (*alloc_list, list->data);
|
||
*index = g_list_concat (*index, list);
|
||
}
|
||
}
|
||
|
||
g_free (stream->indexes);
|
||
stream->indexes = NULL;
|
||
}
|
||
GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* Read AVI index
|
||
*/
|
||
static void
|
||
gst_avi_demux_read_subindexes_pull (GstAviDemux * avi,
|
||
GList ** index, GList ** alloc_list)
|
||
{
|
||
GList *list = NULL;
|
||
guint32 tag;
|
||
GstBuffer *buf;
|
||
gint i, n;
|
||
|
||
GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_pull for %d streams",
|
||
avi->num_streams);
|
||
|
||
for (n = 0; n < avi->num_streams; n++) {
|
||
avi_stream_context *stream = &avi->stream[n];
|
||
|
||
for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
|
||
if (gst_riff_read_chunk (GST_ELEMENT (avi), avi->sinkpad,
|
||
&stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
|
||
continue;
|
||
else if (tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
|
||
'0' + stream->num % 10)) {
|
||
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
||
GST_FOURCC_ARGS (tag));
|
||
gst_buffer_unref (buf);
|
||
continue;
|
||
}
|
||
|
||
if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
|
||
continue;
|
||
if (list) {
|
||
GST_DEBUG_OBJECT (avi, " adding %5d entries, total %2d %5d",
|
||
g_list_length (list), g_list_length (*alloc_list),
|
||
g_list_length (*index));
|
||
*alloc_list = g_list_append (*alloc_list, list->data);
|
||
*index = g_list_concat (*index, list);
|
||
}
|
||
}
|
||
|
||
g_free (stream->indexes);
|
||
stream->indexes = NULL;
|
||
}
|
||
GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_stream:
|
||
* @avi: calling element (used for debugging/errors).
|
||
* @buf: input buffer used to parse the stream.
|
||
*
|
||
* Parses all subchunks in a strl chunk (which defines a single
|
||
* stream). Discards the buffer after use. This function will
|
||
* increment the stream counter internally.
|
||
*
|
||
* Returns: whether the stream was identified successfully.
|
||
* Errors are not fatal. It does indicate the stream
|
||
* was skipped.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
avi_stream_context *stream = &avi->stream[avi->num_streams];
|
||
GstElementClass *klass;
|
||
GstPadTemplate *templ;
|
||
GstBuffer *sub = NULL;
|
||
guint offset = 4;
|
||
guint32 tag = 0;
|
||
gchar *codec_name = NULL, *padname = NULL;
|
||
const gchar *tag_name;
|
||
GstCaps *caps = NULL;
|
||
GstPad *pad;
|
||
GstElement *element;
|
||
|
||
element = GST_ELEMENT_CAST (avi);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Parsing stream");
|
||
|
||
/* read strh */
|
||
if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub) ||
|
||
tag != GST_RIFF_TAG_strh) {
|
||
GST_ERROR_OBJECT (avi,
|
||
"Failed to find strh chunk (bufsize: %d, tag: %" GST_FOURCC_FORMAT ")",
|
||
GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
|
||
goto fail;
|
||
} else if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
|
||
GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
|
||
goto fail;
|
||
}
|
||
|
||
/* read strf */
|
||
if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub) ||
|
||
tag != GST_RIFF_TAG_strf) {
|
||
GST_ERROR_OBJECT (avi,
|
||
"Failed to find strf chunk (size: %d, tag: %"
|
||
GST_FOURCC_FORMAT ")", GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
|
||
goto fail;
|
||
} else {
|
||
gboolean res = FALSE;
|
||
|
||
switch (stream->strh->type) {
|
||
case GST_RIFF_FCC_vids:
|
||
stream->is_vbr = TRUE;
|
||
res = gst_riff_parse_strf_vids (element, sub,
|
||
&stream->strf.vids, &stream->extradata);
|
||
GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
|
||
break;
|
||
case GST_RIFF_FCC_auds:
|
||
stream->is_vbr = (stream->strh->samplesize == 0)
|
||
&& stream->strh->scale > 1;
|
||
res =
|
||
gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
|
||
&stream->extradata);
|
||
GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
|
||
stream->is_vbr, res);
|
||
break;
|
||
case GST_RIFF_FCC_iavs:
|
||
stream->is_vbr = TRUE;
|
||
res = gst_riff_parse_strf_iavs (element, sub,
|
||
&stream->strf.iavs, &stream->extradata);
|
||
GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
|
||
break;
|
||
default:
|
||
GST_ERROR_OBJECT (avi,
|
||
"Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (stream->strh->type));
|
||
break;
|
||
}
|
||
|
||
if (!res)
|
||
goto fail;
|
||
}
|
||
|
||
/* read strd/strn */
|
||
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
||
/* sub can be NULL if the chunk is empty */
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_strd:
|
||
if (stream->initdata)
|
||
gst_buffer_unref (stream->initdata);
|
||
stream->initdata = sub;
|
||
break;
|
||
case GST_RIFF_TAG_strn:
|
||
g_free (stream->name);
|
||
if (sub != NULL) {
|
||
stream->name =
|
||
g_strndup ((gchar *) GST_BUFFER_DATA (sub),
|
||
(gsize) GST_BUFFER_SIZE (sub));
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
} else {
|
||
stream->name = g_strdup ("");
|
||
}
|
||
GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
|
||
break;
|
||
default:
|
||
if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
|
||
tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
|
||
'0' + avi->num_streams % 10)) {
|
||
g_free (stream->indexes);
|
||
gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
|
||
stream->superindex = TRUE;
|
||
break;
|
||
}
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
if (sub != NULL) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* get class to figure out the template */
|
||
klass = GST_ELEMENT_GET_CLASS (avi);
|
||
|
||
/* we now have all info, let´s set up a pad and a caps and be done */
|
||
/* create stream name + pad */
|
||
switch (stream->strh->type) {
|
||
case GST_RIFF_FCC_vids:{
|
||
guint32 fourcc;
|
||
|
||
fourcc = (stream->strf.vids->compression) ?
|
||
stream->strf.vids->compression : stream->strh->fcc_handler;
|
||
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
||
caps = gst_riff_create_video_caps (fourcc, stream->strh,
|
||
stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
||
GST_TYPE_FOURCC, fourcc, NULL);
|
||
}
|
||
tag_name = GST_TAG_VIDEO_CODEC;
|
||
avi->num_v_streams++;
|
||
break;
|
||
}
|
||
case GST_RIFF_FCC_auds:{
|
||
padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "audio_%02d");
|
||
caps = gst_riff_create_audio_caps (stream->strf.auds->format,
|
||
stream->strh, stream->strf.auds, stream->extradata,
|
||
stream->initdata, &codec_name);
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
|
||
G_TYPE_INT, stream->strf.auds->format, NULL);
|
||
}
|
||
tag_name = GST_TAG_AUDIO_CODEC;
|
||
avi->num_a_streams++;
|
||
break;
|
||
}
|
||
case GST_RIFF_FCC_iavs:{
|
||
guint32 fourcc = stream->strh->fcc_handler;
|
||
|
||
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
||
caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
|
||
stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
||
GST_TYPE_FOURCC, fourcc, NULL);
|
||
}
|
||
tag_name = GST_TAG_VIDEO_CODEC;
|
||
avi->num_v_streams++;
|
||
break;
|
||
}
|
||
default:
|
||
g_assert_not_reached ();
|
||
}
|
||
|
||
/* no caps means no stream */
|
||
if (!caps) {
|
||
GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
|
||
goto fail;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (element, "codec-name=%s",
|
||
(codec_name ? codec_name : "NULL"));
|
||
GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
|
||
|
||
/* set proper settings and add it */
|
||
if (stream->pad)
|
||
gst_object_unref (stream->pad);
|
||
pad = stream->pad = gst_pad_new_from_template (templ, padname);
|
||
stream->last_flow = GST_FLOW_OK;
|
||
stream->discont = TRUE;
|
||
stream->idx_duration = GST_CLOCK_TIME_NONE;
|
||
stream->hdr_duration = GST_CLOCK_TIME_NONE;
|
||
stream->duration = GST_CLOCK_TIME_NONE;
|
||
g_free (padname);
|
||
|
||
gst_pad_use_fixed_caps (pad);
|
||
#if 0
|
||
gst_pad_set_formats_function (pad, gst_avi_demux_get_src_formats);
|
||
gst_pad_set_event_mask_function (pad, gst_avi_demux_get_event_mask);
|
||
#endif
|
||
gst_pad_set_event_function (pad, gst_avi_demux_handle_src_event);
|
||
gst_pad_set_query_type_function (pad, gst_avi_demux_get_src_query_types);
|
||
gst_pad_set_query_function (pad, gst_avi_demux_handle_src_query);
|
||
#if 0
|
||
gst_pad_set_convert_function (pad, gst_avi_demux_src_convert);
|
||
#endif
|
||
|
||
stream->num = avi->num_streams;
|
||
stream->total_bytes = 0;
|
||
stream->total_frames = 0;
|
||
stream->current_frame = 0;
|
||
stream->current_byte = 0;
|
||
gst_pad_set_element_private (pad, stream);
|
||
avi->num_streams++;
|
||
gst_pad_set_caps (pad, caps);
|
||
gst_pad_set_active (pad, TRUE);
|
||
gst_element_add_pad (GST_ELEMENT (avi), pad);
|
||
GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
|
||
GST_PAD_NAME (pad), caps);
|
||
gst_caps_unref (caps);
|
||
|
||
/* make tags */
|
||
if (codec_name) {
|
||
if (!stream->taglist)
|
||
stream->taglist = gst_tag_list_new ();
|
||
|
||
avi->got_tags = TRUE;
|
||
|
||
gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
|
||
codec_name, NULL);
|
||
g_free (codec_name);
|
||
}
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
fail:
|
||
{
|
||
/* unref any mem that may be in use */
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
g_free (codec_name);
|
||
g_free (stream->strh);
|
||
g_free (stream->strf.data);
|
||
g_free (stream->name);
|
||
g_free (stream->indexes);
|
||
if (stream->initdata)
|
||
gst_buffer_unref (stream->initdata);
|
||
if (stream->extradata)
|
||
gst_buffer_unref (stream->extradata);
|
||
memset (stream, 0, sizeof (avi_stream_context));
|
||
avi->num_streams++;
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_odml:
|
||
* @avi: calling element (used for debug/error).
|
||
* @buf: input buffer to be used for parsing.
|
||
*
|
||
* Read an openDML-2.0 extension header. Fills in the frame number
|
||
* in the avi demuxer object when reading succeeds.
|
||
*/
|
||
static void
|
||
gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
guint32 tag = 0;
|
||
guint offset = 4;
|
||
GstBuffer *sub = NULL;
|
||
|
||
while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
|
||
&sub)) {
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_dmlh:{
|
||
gst_riff_dmlh dmlh, *_dmlh;
|
||
guint size;
|
||
|
||
/* sub == NULL is possible and means an empty buffer */
|
||
size = sub ? GST_BUFFER_SIZE (sub) : 0;
|
||
|
||
/* check size */
|
||
if (size < sizeof (gst_riff_dmlh)) {
|
||
GST_ERROR_OBJECT (avi,
|
||
"DMLH entry is too small (%d bytes, %d needed)",
|
||
size, (int) sizeof (gst_riff_dmlh));
|
||
goto next;
|
||
}
|
||
_dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
|
||
dmlh.totalframes = GUINT32_FROM_LE (_dmlh->totalframes);
|
||
|
||
GST_INFO_OBJECT (avi, "dmlh tag found:");
|
||
GST_INFO_OBJECT (avi, " totalframes: %u", dmlh.totalframes);
|
||
|
||
avi->avih->tot_frames = dmlh.totalframes;
|
||
goto next;
|
||
}
|
||
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
/* skip and move to next chunk */
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
}
|
||
|
||
/*
|
||
* Sort helper for index entries that sorts by index time.
|
||
*/
|
||
static gint
|
||
sort (gst_avi_index_entry * a, gst_avi_index_entry * b)
|
||
{
|
||
if (a->ts > b->ts)
|
||
return 1;
|
||
else if (a->ts < b->ts)
|
||
return -1;
|
||
else
|
||
return a->stream_nr - b->stream_nr;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_index:
|
||
* @avi: calling element (used for debugging/errors).
|
||
* @buf: buffer containing the full index.
|
||
* @entries_list: list (returned by this function) containing the index
|
||
* entries parsed from the buffer. The first in the list
|
||
* is also a pointer to the allocated data and should be
|
||
* free'ed at some point.
|
||
*
|
||
* Read index entries from the provided buffer. Takes ownership of @buf.
|
||
*/
|
||
static void
|
||
gst_avi_demux_parse_index (GstAviDemux * avi,
|
||
GstBuffer * buf, GList ** _entries_list)
|
||
{
|
||
guint64 pos_before = avi->offset;
|
||
gst_avi_index_entry *entries = NULL;
|
||
guint8 *data;
|
||
GList *entries_list = NULL;
|
||
guint i, num, n;
|
||
|
||
#ifndef GST_DISABLE_DEBUG
|
||
gulong _nr_keyframes = 0;
|
||
#endif
|
||
|
||
if (!buf || !GST_BUFFER_SIZE (buf)) {
|
||
*_entries_list = NULL;
|
||
GST_DEBUG ("empty index");
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
return;
|
||
}
|
||
|
||
data = GST_BUFFER_DATA (buf);
|
||
num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
|
||
if (!(entries = g_try_new (gst_avi_index_entry, num)))
|
||
goto out_of_mem;
|
||
|
||
GST_INFO ("Parsing index, nr_entries = %6d", num);
|
||
|
||
for (i = 0, n = 0; i < num; i++) {
|
||
gint64 next_ts;
|
||
gst_riff_index_entry entry, *_entry;
|
||
avi_stream_context *stream;
|
||
gint stream_nr;
|
||
gst_avi_index_entry *target;
|
||
GstFormat format;
|
||
|
||
_entry = &((gst_riff_index_entry *) data)[i];
|
||
entry.id = GUINT32_FROM_LE (_entry->id);
|
||
entry.offset = GUINT32_FROM_LE (_entry->offset);
|
||
entry.flags = GUINT32_FROM_LE (_entry->flags);
|
||
entry.size = GUINT32_FROM_LE (_entry->size);
|
||
target = &entries[n];
|
||
|
||
if (entry.id == GST_RIFF_rec || entry.id == 0 ||
|
||
(entry.offset == 0 && n > 0))
|
||
continue;
|
||
|
||
stream_nr = CHUNKID_TO_STREAMNR (entry.id);
|
||
if (stream_nr >= avi->num_streams || stream_nr < 0) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Index entry %d has invalid stream nr %d", i, stream_nr);
|
||
continue;
|
||
}
|
||
target->stream_nr = stream_nr;
|
||
stream = &avi->stream[stream_nr];
|
||
|
||
target->index_nr = i;
|
||
target->flags =
|
||
(entry.
|
||
flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME : 0;
|
||
target->size = entry.size;
|
||
target->offset = entry.offset + 8;
|
||
|
||
/* figure out if the index is 0 based or relative to the MOVI start */
|
||
if (n == 0) {
|
||
if (target->offset < pos_before)
|
||
avi->index_offset = pos_before + 8;
|
||
else
|
||
avi->index_offset = 0;
|
||
GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
|
||
}
|
||
|
||
format = GST_FORMAT_TIME;
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
/* all audio frames are keyframes */
|
||
target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
||
}
|
||
#ifndef GST_DISABLE_DEBUG
|
||
if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
|
||
_nr_keyframes++;
|
||
#endif
|
||
|
||
/* stream duration unknown, now we can calculate it */
|
||
if (stream->idx_duration == -1)
|
||
stream->idx_duration = 0;
|
||
|
||
/* timestamps */
|
||
target->ts = stream->idx_duration;
|
||
if (stream->is_vbr) {
|
||
/* VBR stream next timestamp */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames + 1, &format, &next_ts);
|
||
} else {
|
||
/* constant rate stream */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes + target->size, &format, &next_ts);
|
||
}
|
||
/* duration is next - current */
|
||
target->dur = next_ts - target->ts;
|
||
|
||
/* stream position */
|
||
target->bytes_before = stream->total_bytes;
|
||
target->frames_before = stream->total_frames;
|
||
|
||
stream->total_bytes += target->size;
|
||
stream->total_frames++;
|
||
stream->idx_duration = next_ts;
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Adding index entry %d (%6u), flags %02x, stream %d, size %u "
|
||
", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
|
||
GST_TIME_FORMAT,
|
||
target->index_nr, stream->total_frames - 1, target->flags,
|
||
target->stream_nr, target->size, target->offset,
|
||
GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
|
||
entries_list = g_list_prepend (entries_list, target);
|
||
|
||
n++;
|
||
}
|
||
|
||
GST_INFO
|
||
("Parsed index, %6d entries, %5d keyframes, entry size = %2d, total size = %10ld",
|
||
num, _nr_keyframes, sizeof (gst_avi_index_entry),
|
||
num * sizeof (gst_avi_index_entry));
|
||
|
||
gst_buffer_unref (buf);
|
||
|
||
if (n > 0) {
|
||
*_entries_list = g_list_reverse (entries_list);
|
||
} else {
|
||
g_free (entries);
|
||
}
|
||
return;
|
||
|
||
/* ERRORS */
|
||
out_of_mem:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
||
("Cannot allocate memory for %lu*%lu=%lu bytes",
|
||
sizeof (gst_avi_index_entry), num,
|
||
sizeof (gst_avi_index_entry) * num));
|
||
gst_buffer_unref (buf);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_stream_index:
|
||
* @avi: avi demuxer object.
|
||
* @index: list of index entries, returned by this function.
|
||
* @alloc_list: list of allocated data, returned by this function.
|
||
*
|
||
* Seeks to index and reads it.
|
||
*/
|
||
static void
|
||
gst_avi_demux_stream_index (GstAviDemux * avi,
|
||
GList ** index, GList ** alloc_list)
|
||
{
|
||
GstFlowReturn res;
|
||
guint64 offset = avi->offset;
|
||
GstBuffer *buf;
|
||
guint32 tag;
|
||
guint size;
|
||
gint i;
|
||
|
||
GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
*alloc_list = NULL;
|
||
*index = NULL;
|
||
|
||
/* get chunk information */
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
else if (GST_BUFFER_SIZE (buf) < 8)
|
||
goto too_small;
|
||
|
||
/* check tag first before blindy trying to read 'size' bytes */
|
||
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
||
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
GST_WARNING_OBJECT (avi, "skip LIST chunk, size %d",
|
||
(8 + ((size + 1) & ~1)));
|
||
offset += 8 + ((size + 1) & ~1);
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
else if (GST_BUFFER_SIZE (buf) < 8)
|
||
goto too_small;
|
||
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
||
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
||
}
|
||
|
||
if (tag != GST_RIFF_TAG_idx1)
|
||
goto no_index;
|
||
if (!size)
|
||
goto zero_index;
|
||
|
||
gst_buffer_unref (buf);
|
||
|
||
GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
/* read chunk, advance offset */
|
||
if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
|
||
avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
|
||
return;
|
||
|
||
GST_INFO ("will parse index chunk size %d for tag %" GST_FOURCC_FORMAT,
|
||
GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
|
||
|
||
gst_avi_demux_parse_index (avi, buf, index);
|
||
if (*index)
|
||
*alloc_list = g_list_append (*alloc_list, (*index)->data);
|
||
|
||
/* debug our indexes */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi_stream_context *stream;
|
||
|
||
stream = &avi->stream[i];
|
||
GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
|
||
i, stream->total_frames, stream->total_bytes);
|
||
}
|
||
return;
|
||
|
||
/* ERRORS */
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi,
|
||
"pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
|
||
return;
|
||
}
|
||
too_small:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "Buffer is too small");
|
||
gst_buffer_unref (buf);
|
||
return;
|
||
}
|
||
no_index:
|
||
{
|
||
GST_WARNING_OBJECT (avi,
|
||
"No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
gst_buffer_unref (buf);
|
||
return;
|
||
}
|
||
zero_index:
|
||
{
|
||
GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
|
||
gst_buffer_unref (buf);
|
||
return;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/*
|
||
* Sync to next data chunk.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
|
||
{
|
||
GstRiffRead *riff = GST_RIFF_READ (avi);
|
||
|
||
if (prevent_eos) {
|
||
guint64 pos, length;
|
||
guint size;
|
||
guint8 *data;
|
||
|
||
pos = gst_bytestream_tell (riff->bs);
|
||
length = gst_bytestream_length (riff->bs);
|
||
|
||
if (pos + 8 > length)
|
||
return FALSE;
|
||
|
||
if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
|
||
return FALSE;
|
||
|
||
size = GST_READ_UINT32_LE (&data[4]);
|
||
if (size & 1)
|
||
size++;
|
||
|
||
/* Note, we're going to skip which might involve seeks. Therefore,
|
||
* we need 1 byte more! */
|
||
if (pos + 8 + size >= length)
|
||
return FALSE;
|
||
}
|
||
|
||
return gst_riff_read_skip (riff);
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
|
||
{
|
||
GstRiffRead *riff = GST_RIFF_READ (avi);
|
||
guint32 tag;
|
||
guint64 length = gst_bytestream_length (riff->bs);
|
||
|
||
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
||
return FALSE;
|
||
|
||
/* peek first (for the end of this 'list/movi' section) */
|
||
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
||
return FALSE;
|
||
|
||
/* if we're at top-level, we didn't read the 'movi'
|
||
* list tag yet. This can also be 'AVIX' in case of
|
||
* openDML-2.0 AVI files. Lastly, it might be idx1,
|
||
* in which case we skip it so we come at EOS. */
|
||
while (1) {
|
||
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
||
return FALSE;
|
||
|
||
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
||
return FALSE;
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
if (!(tag = gst_riff_peek_list (riff)))
|
||
return FALSE;
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_LIST_AVIX:
|
||
if (!gst_riff_read_list (riff, &tag))
|
||
return FALSE;
|
||
break;
|
||
|
||
case GST_RIFF_LIST_movi:
|
||
if (!gst_riff_read_list (riff, &tag))
|
||
return FALSE;
|
||
/* fall-through */
|
||
|
||
case GST_RIFF_rec:
|
||
goto done;
|
||
|
||
default:
|
||
GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* fall-through */
|
||
|
||
case GST_RIFF_TAG_JUNK:
|
||
if (!gst_avi_demux_skip (avi, prevent_eos))
|
||
return FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
|
||
((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
|
||
goto done;
|
||
}
|
||
/* pass-through */
|
||
|
||
case GST_RIFF_TAG_idx1:
|
||
case GST_RIFF_TAG_JUNK:
|
||
if (!gst_avi_demux_skip (avi, prevent_eos)) {
|
||
return FALSE;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
done:
|
||
/* And then, we get the data */
|
||
if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
|
||
return FALSE;
|
||
|
||
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
||
return FALSE;
|
||
|
||
/* Support for rec-list files */
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
if (!(tag = gst_riff_peek_list (riff)))
|
||
return FALSE;
|
||
if (tag == GST_RIFF_rec) {
|
||
/* Simply skip the list */
|
||
if (!gst_riff_read_list (riff, &tag))
|
||
return FALSE;
|
||
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
||
return FALSE;
|
||
}
|
||
break;
|
||
|
||
case GST_RIFF_TAG_JUNK:
|
||
gst_avi_demux_skip (avi, prevent_eos);
|
||
return FALSE;
|
||
}
|
||
|
||
if (ret_tag)
|
||
*ret_tag = tag;
|
||
|
||
return TRUE;
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* gst_avi_demux_peek_tag:
|
||
*
|
||
* Returns the tag and size of the next chunk
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
|
||
guint * size)
|
||
{
|
||
GstFlowReturn res = GST_FLOW_OK;
|
||
GstBuffer *buf = NULL;
|
||
guint bufsize;
|
||
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
bufsize = GST_BUFFER_SIZE (buf);
|
||
if (bufsize != 8)
|
||
goto wrong_size;
|
||
|
||
*tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
||
*size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
||
|
||
GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
|
||
G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
|
||
*size, offset + 8, offset + 8 + (gint64) * size);
|
||
done:
|
||
gst_buffer_unref (buf);
|
||
|
||
return res;
|
||
|
||
/* ERRORS */
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
|
||
return res;
|
||
}
|
||
wrong_size:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
|
||
res = GST_FLOW_ERROR;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_next_data_buffer:
|
||
*
|
||
* Returns the offset and size of the next buffer
|
||
* Position is the position of the buffer (after tag and size)
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
|
||
guint32 * tag, guint * size)
|
||
{
|
||
guint64 off = *offset;
|
||
guint _size = 0;
|
||
GstFlowReturn res;
|
||
|
||
do {
|
||
res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
|
||
if (res != GST_FLOW_OK)
|
||
break;
|
||
if (*tag == GST_RIFF_TAG_LIST)
|
||
off += 8 + 4; /* skip tag + size + subtag */
|
||
else {
|
||
*offset = off + 8;
|
||
*size = _size;
|
||
break;
|
||
}
|
||
} while (TRUE);
|
||
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_stream_scan:
|
||
* @avi: calling element (used for debugging/errors).
|
||
* @index: list of index entries, returned by this function.
|
||
* @alloc_list: list of allocated data, returned by this function.
|
||
*
|
||
* Scan the file for all chunks to "create" a new index.
|
||
* Return value indicates if we can continue reading the stream. It
|
||
* does not say anything about whether we created an index.
|
||
*
|
||
* pull-range based
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_stream_scan (GstAviDemux * avi,
|
||
GList ** index, GList ** alloc_list)
|
||
{
|
||
GstFlowReturn res;
|
||
gst_avi_index_entry *entry, *entries = NULL;
|
||
avi_stream_context *stream;
|
||
GstFormat format;
|
||
guint64 pos = avi->offset;
|
||
guint64 length;
|
||
gint64 tmplength;
|
||
guint32 tag = 0;
|
||
GList *list = NULL;
|
||
guint index_size = 0;
|
||
|
||
/* FIXME:
|
||
* - implement non-seekable source support.
|
||
*/
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
|
||
((*index) ? "with" : "without"), pos);
|
||
|
||
format = GST_FORMAT_BYTES;
|
||
if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
|
||
return FALSE;
|
||
|
||
length = tmplength;
|
||
|
||
if (*index) {
|
||
entry = g_list_last (*index)->data;
|
||
pos = entry->offset + avi->index_offset + entry->size;
|
||
if (entry->size & 1)
|
||
pos++;
|
||
|
||
if (pos >= length) {
|
||
GST_LOG_OBJECT (avi, "Complete index, we're done");
|
||
return TRUE;
|
||
}
|
||
|
||
GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
|
||
G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
|
||
G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
|
||
}
|
||
|
||
while (1) {
|
||
gint stream_nr;
|
||
guint size = 0;
|
||
gint64 tmpts, tmpnextts;
|
||
|
||
res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
|
||
if (res != GST_FLOW_OK)
|
||
break;
|
||
|
||
/* check valid stream */
|
||
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
||
if (stream_nr < 0 || stream_nr >= avi->num_streams)
|
||
goto next;
|
||
|
||
stream = &avi->stream[stream_nr];
|
||
|
||
/* pre-allocate */
|
||
if (index_size % 1024 == 0) {
|
||
entries = g_new (gst_avi_index_entry, 1024);
|
||
*alloc_list = g_list_prepend (*alloc_list, entries);
|
||
}
|
||
entry = &entries[index_size % 1024];
|
||
|
||
entry->index_nr = index_size++;
|
||
entry->stream_nr = stream_nr;
|
||
entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
||
entry->offset = pos - avi->index_offset;
|
||
entry->size = size;
|
||
|
||
/* timestamps, get timestamps of two consecutive frames to calculate
|
||
* timestamp and duration. */
|
||
format = GST_FORMAT_TIME;
|
||
if (stream->is_vbr) {
|
||
/* VBR stream */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames, &format, &tmpts);
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames + 1, &format, &tmpnextts);
|
||
} else {
|
||
/* constant rate stream */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes, &format, &tmpts);
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes + entry->size, &format, &tmpnextts);
|
||
}
|
||
entry->ts = tmpts;
|
||
entry->dur = tmpnextts - tmpts;
|
||
|
||
/* stream position */
|
||
entry->bytes_before = stream->total_bytes;
|
||
stream->total_bytes += entry->size;
|
||
entry->frames_before = stream->total_frames;
|
||
stream->total_frames++;
|
||
stream->idx_duration = tmpnextts;
|
||
|
||
list = g_list_prepend (list, entry);
|
||
GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
|
||
G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
|
||
index_size - 1, entry->frames_before, entry->offset,
|
||
GST_TIME_ARGS (entry->ts), entry->stream_nr);
|
||
|
||
next:
|
||
/* update position */
|
||
pos += GST_ROUND_UP_2 (size);
|
||
if (pos > length) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stopping index lookup since we are further than EOF");
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* FIXME: why is this disabled */
|
||
#if 0
|
||
while (gst_avi_demux_sync (avi, &tag, TRUE)) {
|
||
gint stream_nr = CHUNKID_TO_STREAMNR (tag);
|
||
guint8 *data;
|
||
GstFormat format = GST_FORMAT_TIME;
|
||
|
||
if (stream_nr < 0 || stream_nr >= avi->num_streams)
|
||
goto next;
|
||
stream = &avi->stream[stream_nr];
|
||
|
||
/* get chunk size */
|
||
if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
|
||
goto next;
|
||
|
||
/* fill in */
|
||
entry->index_nr = index_size++;
|
||
entry->stream_nr = stream_nr;
|
||
entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
|
||
entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
|
||
entry->size = GST_READ_UINT32_LE (&data[4]);
|
||
|
||
/* timestamps */
|
||
if (stream->is_vbr) {
|
||
/* VBR stream */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames, &format, &entry->ts);
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_DEFAULT,
|
||
stream->total_frames + 1, &format, &entry->dur);
|
||
} else {
|
||
/* constant rate stream */
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes, &format, &entry->ts);
|
||
gst_avi_demux_src_convert (stream->pad, GST_FORMAT_BYTES,
|
||
stream->total_bytes + entry->size, &format, &entry->dur);
|
||
}
|
||
entry->dur -= entry->ts;
|
||
|
||
/* stream position */
|
||
entry->bytes_before = stream->total_bytes;
|
||
stream->total_bytes += entry->size;
|
||
entry->frames_before = stream->total_frames;
|
||
stream->total_frames++;
|
||
|
||
list = g_list_prepend (list, entry);
|
||
GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
|
||
G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
|
||
index_size - 1, entry->frames_before, entry->offset,
|
||
GST_TIME_ARGS (entry->ts), entry->stream_nr);
|
||
|
||
next:
|
||
if (!gst_avi_demux_skip (avi, TRUE))
|
||
break;
|
||
}
|
||
/* seek back */
|
||
if (!(event = gst_riff_read_seek (riff, pos))) {
|
||
g_list_free (list);
|
||
return FALSE;
|
||
}
|
||
gst_event_unref (event);
|
||
|
||
#endif
|
||
|
||
GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
|
||
|
||
*index = g_list_concat (*index, g_list_reverse (list));
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_massage_index:
|
||
* @avi: calling element (used for debugging/errors).
|
||
*
|
||
* We're going to go over each entry in the index and finetune
|
||
* some things we don't like about AVI. For example, a single
|
||
* chunk might be too long. Also, individual streams might be
|
||
* out-of-sync. In the first case, we cut the chunk in several
|
||
* smaller pieces. In the second case, we re-order chunk reading
|
||
* order. The end result should be a smoother playing AVI.
|
||
*/
|
||
static void
|
||
gst_avi_demux_massage_index (GstAviDemux * avi,
|
||
GList * list, GList * alloc_list)
|
||
{
|
||
gst_avi_index_entry *entry;
|
||
avi_stream_context *stream;
|
||
gint i;
|
||
GList *node;
|
||
gint64 delay = G_GINT64_CONSTANT (0);
|
||
|
||
GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
|
||
g_list_length (list));
|
||
|
||
if (list) {
|
||
#ifndef GST_DISABLE_DEBUG
|
||
guint num_added_total = 0;
|
||
#endif
|
||
GST_LOG_OBJECT (avi,
|
||
"I'm now going to cut large chunks into smaller pieces");
|
||
|
||
/* cut chunks in small (seekable) pieces
|
||
* FIXME: this should be a property where a value of
|
||
* GST_CLOCK_TIME_NONE would disable the chunking
|
||
*/
|
||
#define MAX_DURATION (GST_SECOND / 2)
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
/* only chop streams that have exactly *one* chunk */
|
||
if (avi->stream[i].total_frames != 1)
|
||
continue;
|
||
|
||
for (node = list; node != NULL; node = node->next) {
|
||
entry = node->data;
|
||
|
||
if (entry->stream_nr != i)
|
||
continue;
|
||
|
||
/* check for max duration of a single buffer. I suppose that
|
||
* the allocation of index entries could be improved. */
|
||
stream = &avi->stream[entry->stream_nr];
|
||
if (entry->dur > MAX_DURATION
|
||
&& stream->strh->type == GST_RIFF_FCC_auds) {
|
||
guint32 ideal_size;
|
||
gst_avi_index_entry *entries;
|
||
guint old_size, num_added;
|
||
GList *node2;
|
||
|
||
/* cut in 1/10th of a second */
|
||
ideal_size = stream->strf.auds->av_bps / 10;
|
||
|
||
/* ensure chunk size is multiple of blockalign */
|
||
if (stream->strf.auds->blockalign > 1)
|
||
ideal_size -= ideal_size % stream->strf.auds->blockalign;
|
||
|
||
/* copy index */
|
||
old_size = entry->size;
|
||
num_added = (entry->size - 1) / ideal_size;
|
||
avi->index_size += num_added;
|
||
entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
|
||
alloc_list = g_list_prepend (alloc_list, entries);
|
||
for (node2 = node->next; node2 != NULL; node2 = node2->next) {
|
||
gst_avi_index_entry *entry2 = node2->data;
|
||
|
||
entry2->index_nr += num_added;
|
||
if (entry2->stream_nr == entry->stream_nr)
|
||
entry2->frames_before += num_added;
|
||
}
|
||
|
||
/* new sized index chunks */
|
||
for (i = 0; i < num_added + 1; i++) {
|
||
gst_avi_index_entry *entry2;
|
||
|
||
if (i == 0) {
|
||
entry2 = entry;
|
||
} else {
|
||
entry2 = &entries[i - 1];
|
||
list = g_list_insert_before (list, node->next, entry2);
|
||
entry = node->data;
|
||
node = node->next;
|
||
memcpy (entry2, entry, sizeof (gst_avi_index_entry));
|
||
}
|
||
|
||
if (old_size >= ideal_size) {
|
||
entry2->size = ideal_size;
|
||
old_size -= ideal_size;
|
||
} else {
|
||
entry2->size = old_size;
|
||
}
|
||
|
||
entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
|
||
if (i != 0) {
|
||
entry2->index_nr++;
|
||
entry2->ts += entry->dur;
|
||
entry2->offset += entry->size;
|
||
entry2->bytes_before += entry->size;
|
||
entry2->frames_before++;
|
||
}
|
||
}
|
||
#ifndef GST_DISABLE_DEBUG
|
||
num_added_total += num_added;
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
#ifndef GST_DISABLE_DEBUG
|
||
if (num_added_total)
|
||
GST_LOG ("added %u new index entries", num_added_total);
|
||
#endif
|
||
|
||
GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
|
||
|
||
/* re-order for time */
|
||
list = g_list_sort (list, (GCompareFunc) sort);
|
||
|
||
/* make a continous array out of the list */
|
||
avi->index_size = g_list_length (list);
|
||
avi->index_entries = g_new (gst_avi_index_entry, avi->index_size);
|
||
entry = (gst_avi_index_entry *) (list->data);
|
||
delay = entry->ts;
|
||
|
||
GST_LOG_OBJECT (avi,
|
||
"Building index array, nr_entries = %d (time offset = %"
|
||
GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
|
||
|
||
for (i = 0, node = list; node != NULL; node = node->next, i++) {
|
||
entry = node->data;
|
||
entry->index_nr = i;
|
||
entry->ts -= delay;
|
||
memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
|
||
|
||
GST_DEBUG ("Sorted index entry %3d for stream %d of size %6u"
|
||
" at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
|
||
" dur %" GST_TIME_FORMAT,
|
||
avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
|
||
entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
|
||
}
|
||
if (delay) {
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
stream->idx_duration -= delay;
|
||
}
|
||
}
|
||
|
||
GST_LOG_OBJECT (avi, "Freeing original index list");
|
||
/* all the node->data in list point to alloc_list chunks */
|
||
g_list_free (list);
|
||
}
|
||
if (alloc_list) {
|
||
g_list_foreach (alloc_list, (GFunc) g_free, NULL);
|
||
g_list_free (alloc_list);
|
||
}
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
|
||
i, avi->stream[i].total_frames, avi->stream[i].total_bytes);
|
||
}
|
||
#endif
|
||
|
||
GST_LOG_OBJECT (avi, "Index massaging done");
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
|
||
{
|
||
gst_avi_index_entry *entry;
|
||
gint stream;
|
||
GstClockTime total;
|
||
|
||
total = GST_CLOCK_TIME_NONE;
|
||
|
||
/* all streams start at a timestamp 0 */
|
||
for (stream = 0; stream < avi->num_streams; stream++) {
|
||
GstClockTime duration, hduration;
|
||
avi_stream_context *streamc = &avi->stream[stream];
|
||
gst_riff_strh *strh = streamc->strh;
|
||
|
||
/* get header duration */
|
||
hduration = gst_util_uint64_scale ((guint64) strh->length *
|
||
strh->scale, GST_SECOND, (guint64) strh->rate);
|
||
|
||
GST_INFO ("Stream %d duration according to header: %" GST_TIME_FORMAT,
|
||
stream, GST_TIME_ARGS (hduration));
|
||
|
||
if (hduration == 0)
|
||
hduration = GST_CLOCK_TIME_NONE;
|
||
|
||
/* set duration for the stream */
|
||
streamc->hdr_duration = hduration;
|
||
|
||
/* get last index entry to get duration */
|
||
if ((entry = gst_avi_demux_index_last (avi, stream)))
|
||
duration = entry->ts + entry->dur;
|
||
else
|
||
duration = GST_CLOCK_TIME_NONE;
|
||
|
||
streamc->idx_duration = duration;
|
||
|
||
/* now pick a good duration */
|
||
if (GST_CLOCK_TIME_IS_VALID (duration)) {
|
||
/* index gave valid duration, use that */
|
||
GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
|
||
stream, GST_TIME_ARGS (duration));
|
||
} else {
|
||
/* fall back to header info to calculate a duration */
|
||
duration = hduration;
|
||
}
|
||
/* set duration for the stream */
|
||
streamc->duration = duration;
|
||
|
||
/* find total duration */
|
||
if (total == GST_CLOCK_TIME_NONE || duration > total)
|
||
total = duration;
|
||
}
|
||
|
||
if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
|
||
/* now update the duration for those streams where we had none */
|
||
for (stream = 0; stream < avi->num_streams; stream++) {
|
||
avi_stream_context *streamc = &avi->stream[stream];
|
||
|
||
if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
|
||
|| streamc->duration == 0) {
|
||
streamc->duration = total;
|
||
|
||
GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
|
||
stream, GST_TIME_ARGS (total));
|
||
}
|
||
}
|
||
}
|
||
|
||
/* and set the total duration in the segment. */
|
||
GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (total));
|
||
|
||
gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
|
||
{
|
||
gint i;
|
||
gboolean result = TRUE;
|
||
|
||
GST_DEBUG_OBJECT (avi, "sending event to %d streams", avi->num_streams);
|
||
if (avi->num_streams) {
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi_stream_context *stream = &avi->stream[i];
|
||
|
||
gst_event_ref (event);
|
||
result &= gst_pad_push_event (stream->pad, event);
|
||
}
|
||
} else {
|
||
/* return error, as the event was not send */
|
||
result = FALSE;
|
||
}
|
||
gst_event_unref (event);
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
* Read AVI headers when streaming
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_header_push (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn ret = GST_FLOW_OK;
|
||
guint32 tag = 0;
|
||
guint32 ltag = 0;
|
||
guint32 size = 0;
|
||
const guint8 *data;
|
||
GstBuffer *buf = NULL, *sub = NULL;
|
||
guint offset = 4;
|
||
gint64 stop;
|
||
|
||
GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
|
||
|
||
switch (avi->header_state) {
|
||
case GST_AVI_DEMUX_HEADER_TAG_LIST:
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
if (tag != GST_RIFF_TAG_LIST)
|
||
goto header_no_list;
|
||
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
/* Find the 'hdrl' LIST tag */
|
||
GST_DEBUG ("Reading %d bytes", size);
|
||
buf = gst_adapter_take_buffer (avi->adapter, size);
|
||
|
||
if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
|
||
goto header_no_hdrl;
|
||
|
||
GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
|
||
|
||
/* the hdrl starts with a 'avih' header */
|
||
if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
|
||
goto header_no_avih;
|
||
|
||
if (tag != GST_RIFF_TAG_avih)
|
||
goto header_no_avih;
|
||
|
||
if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
|
||
goto header_wrong_avih;
|
||
|
||
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
|
||
|
||
/* now, read the elements from the header until the end */
|
||
while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
|
||
&sub)) {
|
||
/* sub can be NULL on empty tags */
|
||
if (!sub)
|
||
continue;
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
if (GST_BUFFER_SIZE (sub) < 4)
|
||
goto next;
|
||
|
||
switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
|
||
case GST_RIFF_LIST_strl:
|
||
if (!(gst_avi_demux_parse_stream (avi, sub))) {
|
||
GST_DEBUG_OBJECT (avi, "avi_demux_parse_stream failed");
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
goto next;
|
||
case GST_RIFF_LIST_odml:
|
||
gst_avi_demux_parse_odml (avi, sub);
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
|
||
(sub))));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
goto next;
|
||
}
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
|
||
offset, GST_FOURCC_ARGS (tag));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
/* move to next chunk */
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
}
|
||
gst_buffer_unref (buf);
|
||
GST_DEBUG ("elements parsed");
|
||
|
||
/* check parsed streams */
|
||
if (avi->num_streams == 0) {
|
||
goto no_streams;
|
||
} else if (avi->num_streams != avi->avih->streams) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stream header mentioned %d streams, but %d available",
|
||
avi->avih->streams, avi->num_streams);
|
||
}
|
||
GST_DEBUG ("Get junk and info next");
|
||
avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
|
||
} else {
|
||
/* Need more data */
|
||
return ret;
|
||
}
|
||
/* fall-though */
|
||
case GST_AVI_DEMUX_HEADER_INFO:
|
||
GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
|
||
while (TRUE) {
|
||
if (gst_adapter_available (avi->adapter) < 12)
|
||
return GST_FLOW_OK;
|
||
|
||
data = gst_adapter_peek (avi->adapter, 12);
|
||
tag = GST_READ_UINT32_LE (data);
|
||
size = GST_READ_UINT32_LE (data + 4);
|
||
ltag = GST_READ_UINT32_LE (data + 8);
|
||
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
switch (ltag) {
|
||
case GST_RIFF_LIST_movi:
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
avi->offset += 12;
|
||
goto skipping_done;
|
||
case GST_RIFF_LIST_INFO:
|
||
GST_DEBUG ("Found INFO chunk");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
avi->offset += 12;
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
buf = gst_adapter_take_buffer (avi->adapter, size - 4);
|
||
gst_riff_parse_info (GST_ELEMENT (avi), buf, &avi->globaltags);
|
||
gst_buffer_unref (buf);
|
||
|
||
avi->offset += ((size + 1) & ~1) - 4;
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
break;
|
||
default:
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
||
// ??? goto iterate; ???
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
break;
|
||
}
|
||
} else {
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
||
//goto iterate;
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
GST_WARNING ("unhandled header state: %d", avi->header_state);
|
||
break;
|
||
}
|
||
skipping_done:
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
||
avi->num_streams, avi->stream[0].indexes);
|
||
|
||
GST_DEBUG ("Found movi chunk. Starting to stream data");
|
||
avi->state = GST_AVI_DEMUX_MOVI;
|
||
|
||
#if 0
|
||
/*GList *index = NULL, *alloc = NULL; */
|
||
|
||
// ######################## this need to be integrated with the state
|
||
/* create or read stream index (for seeking) */
|
||
if (avi->stream[0].indexes != NULL) {
|
||
gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
|
||
}
|
||
if (!index) {
|
||
if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
|
||
gst_avi_demux_stream_index (avi, &index, &alloc);
|
||
}
|
||
/* some indexes are incomplete, continue streaming from there */
|
||
if (!index)
|
||
gst_avi_demux_stream_scan (avi, &index, &alloc);
|
||
}
|
||
|
||
/* this is a fatal error */
|
||
if (!index) {
|
||
GST_WARNING ("file without index");
|
||
goto no_index;
|
||
}
|
||
|
||
gst_avi_demux_massage_index (avi, index, alloc);
|
||
gst_avi_demux_calculate_durations_from_index (avi);
|
||
// ########################
|
||
#endif
|
||
|
||
/* create initial NEWSEGMENT event */
|
||
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
||
stop = avi->segment.duration;
|
||
|
||
GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
|
||
|
||
if (avi->seek_event)
|
||
gst_event_unref (avi->seek_event);
|
||
avi->seek_event = gst_event_new_new_segment
|
||
(FALSE, avi->segment.rate, GST_FORMAT_TIME,
|
||
avi->segment.start, stop, avi->segment.start);
|
||
|
||
/* at this point we know all the streams and we can signal the no more
|
||
* pads signal */
|
||
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
||
gst_element_no_more_pads (GST_ELEMENT (avi));
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
no_streams:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_no_list:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no LIST at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_no_hdrl:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no hdrl at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_no_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no avih at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_wrong_avih:
|
||
{
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read full AVI headers.
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_header_pull (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
GstBuffer *buf, *sub = NULL;
|
||
guint32 tag;
|
||
GList *index = NULL, *alloc = NULL;
|
||
guint offset = 4;
|
||
gint64 stop;
|
||
GstElement *element = GST_ELEMENT_CAST (avi);
|
||
|
||
/* the header consists of a 'hdrl' LIST tag */
|
||
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_range_failed;
|
||
else if (tag != GST_RIFF_TAG_LIST)
|
||
goto no_list;
|
||
else if (GST_BUFFER_SIZE (buf) < 4)
|
||
goto no_header;
|
||
|
||
GST_DEBUG_OBJECT (avi, "parsing headers");
|
||
|
||
/* Find the 'hdrl' LIST tag */
|
||
while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
|
||
GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
|
||
|
||
/* Eat up */
|
||
gst_buffer_unref (buf);
|
||
|
||
/* read new chunk */
|
||
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_range_failed;
|
||
else if (tag != GST_RIFF_TAG_LIST)
|
||
goto no_list;
|
||
else if (GST_BUFFER_SIZE (buf) < 4)
|
||
goto no_header;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
|
||
|
||
/* the hdrl starts with a 'avih' header */
|
||
if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
|
||
goto no_avih;
|
||
else if (tag != GST_RIFF_TAG_avih)
|
||
goto no_avih;
|
||
else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
|
||
goto invalid_avih;
|
||
|
||
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
|
||
|
||
/* now, read the elements from the header until the end */
|
||
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
||
/* sub can be NULL on empty tags */
|
||
if (!sub)
|
||
continue;
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
{
|
||
guint8 *data;
|
||
guint32 fourcc;
|
||
|
||
if (GST_BUFFER_SIZE (sub) < 4)
|
||
goto next;
|
||
|
||
data = GST_BUFFER_DATA (sub);
|
||
fourcc = GST_READ_UINT32_LE (data);
|
||
|
||
switch (fourcc) {
|
||
case GST_RIFF_LIST_strl:
|
||
if (!(gst_avi_demux_parse_stream (avi, sub)))
|
||
goto parse_stream_failed;
|
||
|
||
goto next;
|
||
case GST_RIFF_LIST_odml:
|
||
gst_avi_demux_parse_odml (avi, sub);
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (fourcc));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
goto next;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
|
||
GST_FOURCC_ARGS (tag), offset);
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
}
|
||
gst_buffer_unref (buf);
|
||
GST_DEBUG ("elements parsed");
|
||
|
||
/* check parsed streams */
|
||
if (avi->num_streams == 0)
|
||
goto no_streams;
|
||
else if (avi->num_streams != avi->avih->streams) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stream header mentioned %d streams, but %d available",
|
||
avi->avih->streams, avi->num_streams);
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
|
||
|
||
/* Now, find the data (i.e. skip all junk between header and data) */
|
||
do {
|
||
guint size;
|
||
guint32 tag, ltag;
|
||
|
||
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
|
||
goto pull_range_failed;
|
||
} else if (GST_BUFFER_SIZE (buf) < 12) {
|
||
GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
|
||
GST_BUFFER_SIZE (buf));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
|
||
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
|
||
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
|
||
ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
|
||
gst_buffer_unref (buf);
|
||
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
switch (ltag) {
|
||
case GST_RIFF_LIST_movi:
|
||
goto skipping_done;
|
||
case GST_RIFF_LIST_INFO:
|
||
res =
|
||
gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
|
||
&buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
|
||
goto pull_range_failed;
|
||
}
|
||
|
||
sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
|
||
gst_riff_parse_info (element, sub, &avi->globaltags);
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
gst_buffer_unref (buf);
|
||
/* gst_riff_read_chunk() has already advanced avi->offset */
|
||
break;
|
||
default:
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
break;
|
||
}
|
||
} else {
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
}
|
||
} while (1);
|
||
skipping_done:
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
||
avi->num_streams, avi->stream[0].indexes);
|
||
|
||
/* create or read stream index (for seeking) */
|
||
if (avi->stream[0].indexes != NULL) {
|
||
/* we read a super index already (gst_avi_demux_parse_superindex() ) */
|
||
gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
|
||
}
|
||
if (!index) {
|
||
if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
|
||
gst_avi_demux_stream_index (avi, &index, &alloc);
|
||
}
|
||
/* some indexes are incomplete, continue streaming from there */
|
||
if (!index)
|
||
gst_avi_demux_stream_scan (avi, &index, &alloc);
|
||
}
|
||
|
||
/* this is a fatal error */
|
||
if (!index)
|
||
goto no_index;
|
||
|
||
gst_avi_demux_massage_index (avi, index, alloc);
|
||
gst_avi_demux_calculate_durations_from_index (avi);
|
||
|
||
/* create initial NEWSEGMENT event */
|
||
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
||
stop = avi->segment.duration;
|
||
|
||
GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
|
||
|
||
if (avi->seek_event)
|
||
gst_event_unref (avi->seek_event);
|
||
avi->seek_event = gst_event_new_new_segment
|
||
(FALSE, avi->segment.rate, GST_FORMAT_TIME,
|
||
avi->segment.start, stop, avi->segment.start);
|
||
|
||
/* at this point we know all the streams and we can signal the no more
|
||
* pads signal */
|
||
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
||
gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
parse_stream_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "avi_demux_parse_stream failed");
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_list:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no LIST at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_header:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no hdrl at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no avih at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
invalid_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (cannot parse avih at start)"));
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_streams:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_index:
|
||
{
|
||
GST_WARNING ("file without index");
|
||
g_list_free (index);
|
||
g_list_foreach (alloc, (GFunc) g_free, NULL);
|
||
g_list_free (alloc);
|
||
|
||
/* FIMXE: this happens e.g. if the file is empty (no index and not data
|
||
* chunks), wouldn't ERROR_DEMUX be better?
|
||
*
|
||
GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
|
||
("Could not get/create index"));
|
||
*/
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Could not get/create index"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
pull_range_failed:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("pull_range flow reading header: %s", gst_flow_get_name (res)));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
/* Do the actual seeking.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
|
||
{
|
||
GstClockTime seek_time;
|
||
gboolean keyframe;
|
||
gst_avi_index_entry *entry;
|
||
gint old_entry;
|
||
|
||
seek_time = segment->last_stop;
|
||
keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
|
||
|
||
/* FIXME: if we seek in an openDML file, we will have multiple
|
||
* primary levels. Seeking in between those will cause havoc. */
|
||
|
||
/* save old position so we can see if we must mark a discont. */
|
||
old_entry = avi->current_entry;
|
||
|
||
/* get the entry for the requested position, which is always in last_stop.
|
||
* we search the index entry for stream 0, since all entries are sorted by
|
||
* time and stream we automagically are positioned for the other streams as
|
||
* well. FIXME, this code assumes the main stream with keyframes is stream 0,
|
||
* which is mostly correct... */
|
||
entry = gst_avi_demux_index_entry_for_time (avi, 0, seek_time,
|
||
GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
|
||
if (entry) {
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Got keyframe entry %d [stream:%d / ts:%" GST_TIME_FORMAT
|
||
" / duration:%" GST_TIME_FORMAT "]", entry->index_nr,
|
||
entry->stream_nr, GST_TIME_ARGS (entry->ts),
|
||
GST_TIME_ARGS (entry->dur));
|
||
|
||
avi->current_entry = entry->index_nr;
|
||
} else {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Couldn't find AviIndexEntry for time:%" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (seek_time));
|
||
if (avi->current_entry >= avi->index_size && avi->index_size > 0)
|
||
avi->current_entry = avi->index_size - 1;
|
||
}
|
||
|
||
/* if we changed position, mark a DISCONT on all streams */
|
||
if (avi->current_entry != old_entry) {
|
||
gint i;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi->stream[i].discont = TRUE;
|
||
}
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "seek: %" GST_TIME_FORMAT
|
||
" keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
|
||
|
||
if (keyframe) {
|
||
/* when seeking to a keyframe, we update the result seek time
|
||
* to the time of the keyframe. */
|
||
seek_time = avi->index_entries[avi->current_entry].ts;
|
||
}
|
||
segment->last_stop = seek_time;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* Handle seek.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
|
||
{
|
||
gboolean res;
|
||
gdouble rate;
|
||
GstFormat format;
|
||
GstSeekFlags flags;
|
||
GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
|
||
gint64 cur, stop;
|
||
gboolean flush;
|
||
gboolean update;
|
||
GstSegment seeksegment = { 0, };
|
||
|
||
if (event) {
|
||
GST_DEBUG_OBJECT (avi, "doing seek with event");
|
||
|
||
gst_event_parse_seek (event, &rate, &format, &flags,
|
||
&cur_type, &cur, &stop_type, &stop);
|
||
|
||
/* we have to have a format as the segment format. Try to convert
|
||
* if not. */
|
||
if (format != GST_FORMAT_TIME) {
|
||
GstFormat fmt;
|
||
|
||
fmt = GST_FORMAT_TIME;
|
||
res = TRUE;
|
||
if (cur_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
|
||
if (res && stop_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
|
||
if (!res)
|
||
goto no_format;
|
||
|
||
format = fmt;
|
||
}
|
||
/* FIXME: can we do anything with rate!=1.0 */
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "doing seek without event");
|
||
flags = 0;
|
||
rate = 1.0;
|
||
}
|
||
|
||
/* save flush flag */
|
||
flush = flags & GST_SEEK_FLAG_FLUSH;
|
||
|
||
if (flush) {
|
||
GstEvent *event = gst_event_new_flush_start ();
|
||
|
||
/* for a flushing seek, we send a flush_start on all pads. This will
|
||
* eventually stop streaming with a WRONG_STATE. We can thus eventually
|
||
* take the STREAM_LOCK. */
|
||
GST_DEBUG_OBJECT (avi, "sending flush start");
|
||
gst_avi_demux_push_event (avi, gst_event_ref (event));
|
||
gst_pad_push_event (avi->sinkpad, event);
|
||
} else {
|
||
/* a non-flushing seek, we PAUSE the task so that we can take the
|
||
* STREAM_LOCK */
|
||
GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
|
||
gst_pad_pause_task (avi->sinkpad);
|
||
}
|
||
|
||
/* wait for streaming to stop */
|
||
GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
|
||
GST_PAD_STREAM_LOCK (avi->sinkpad);
|
||
|
||
/* copy segment, we need this because we still need the old
|
||
* segment when we close the current segment. */
|
||
memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
|
||
|
||
if (event) {
|
||
GST_DEBUG_OBJECT (avi, "configuring seek");
|
||
gst_segment_set_seek (&seeksegment, rate, format, flags,
|
||
cur_type, cur, stop_type, stop, &update);
|
||
}
|
||
|
||
/* do the seek, seeksegment.last_stop contains the new position, this
|
||
* actually never fails. */
|
||
res = gst_avi_demux_do_seek (avi, &seeksegment);
|
||
|
||
if (flush) {
|
||
gint i;
|
||
|
||
GST_DEBUG_OBJECT (avi, "sending flush stop");
|
||
gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
|
||
gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
|
||
/* reset the last flow and mark discont, FLUSH is always DISCONT */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi->stream[i].last_flow = GST_FLOW_OK;
|
||
avi->stream[i].discont = TRUE;
|
||
}
|
||
} else if (avi->segment_running) {
|
||
GstEvent *seg;
|
||
|
||
/* we are running the current segment and doing a non-flushing seek,
|
||
* close the segment first based on the last_stop. */
|
||
GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
|
||
" to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
|
||
seg = gst_event_new_new_segment (TRUE,
|
||
avi->segment.rate, avi->segment.format,
|
||
avi->segment.start, avi->segment.last_stop, avi->segment.time);
|
||
gst_avi_demux_push_event (avi, seg);
|
||
}
|
||
|
||
/* now update the real segment info */
|
||
memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
|
||
|
||
/* post the SEGMENT_START message when we do segmented playback */
|
||
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
||
gst_element_post_message (GST_ELEMENT (avi),
|
||
gst_message_new_segment_start (GST_OBJECT (avi),
|
||
avi->segment.format, avi->segment.last_stop));
|
||
}
|
||
|
||
/* prepare for streaming again */
|
||
if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
|
||
stop = avi->segment.duration;
|
||
|
||
/* queue the segment event for the streaming thread. */
|
||
if (avi->seek_event)
|
||
gst_event_unref (avi->seek_event);
|
||
avi->seek_event = gst_event_new_new_segment (FALSE,
|
||
avi->segment.rate, avi->segment.format,
|
||
avi->segment.last_stop, stop, avi->segment.time);
|
||
|
||
if (!avi->streaming) {
|
||
avi->segment_running = TRUE;
|
||
gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
|
||
avi->sinkpad);
|
||
}
|
||
GST_PAD_STREAM_UNLOCK (avi->sinkpad);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
no_format:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Helper for gst_avi_demux_invert()
|
||
*/
|
||
static inline void
|
||
swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
|
||
{
|
||
memcpy (tmp, d1, bytes);
|
||
memcpy (d1, d2, bytes);
|
||
memcpy (d2, tmp, bytes);
|
||
}
|
||
|
||
/*
|
||
* Invert DIB buffers... Takes existing buffer and
|
||
* returns either the buffer or a new one (with old
|
||
* one dereferenced).
|
||
* FIXME: can't we preallocate tmp? and remember stride, bpp?
|
||
*/
|
||
static GstBuffer *
|
||
gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
|
||
{
|
||
GstStructure *s;
|
||
gint y, h = stream->strf.vids->height;
|
||
gint bpp, stride;
|
||
guint8 *tmp = NULL;
|
||
|
||
s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
|
||
if (!gst_structure_get_int (s, "bpp", &bpp)) {
|
||
GST_WARNING ("Failed to retrieve depth from caps");
|
||
return buf;
|
||
}
|
||
|
||
stride = stream->strf.vids->width * (bpp / 8);
|
||
|
||
buf = gst_buffer_make_writable (buf);
|
||
if (GST_BUFFER_SIZE (buf) < (stride * h)) {
|
||
GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
|
||
return buf;
|
||
}
|
||
|
||
tmp = g_malloc (stride);
|
||
|
||
for (y = 0; y < h / 2; y++) {
|
||
swap_line (GST_BUFFER_DATA (buf) + stride * y,
|
||
GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
|
||
}
|
||
|
||
g_free (tmp);
|
||
|
||
return buf;
|
||
}
|
||
|
||
/*
|
||
* Returns the aggregated GstFlowReturn.
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_combine_flows (GstAviDemux * avi, avi_stream_context * stream,
|
||
GstFlowReturn ret)
|
||
{
|
||
gint i;
|
||
|
||
/* store the value */
|
||
stream->last_flow = ret;
|
||
|
||
/* any other error that is not-linked can be returned right
|
||
* away */
|
||
if (ret != GST_FLOW_NOT_LINKED)
|
||
goto done;
|
||
|
||
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi_stream_context *ostream = &avi->stream[i];
|
||
|
||
ret = ostream->last_flow;
|
||
/* some other return value (must be SUCCESS but we can return
|
||
* other values as well) */
|
||
if (ret != GST_FLOW_NOT_LINKED)
|
||
goto done;
|
||
}
|
||
/* if we get here, all other pads were unlinked and we return
|
||
* NOT_LINKED then */
|
||
done:
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Read data from one index entry
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_process_next_entry (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res = GST_FLOW_OK;
|
||
gboolean processed = FALSE;
|
||
avi_stream_context *stream;
|
||
gst_avi_index_entry *entry;
|
||
GstBuffer *buf;
|
||
|
||
do {
|
||
/* see if we are at the end */
|
||
if (avi->current_entry >= avi->index_size)
|
||
goto eos;
|
||
|
||
/* get next entry, this will work as we checked for the size above */
|
||
entry = &avi->index_entries[avi->current_entry++];
|
||
|
||
/* see if we have a valid stream, ignore if not
|
||
* FIXME: can't we check this when building the index?
|
||
*/
|
||
if (entry->stream_nr >= avi->num_streams) {
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Entry %d has non-existing stream nr %d",
|
||
avi->current_entry - 1, entry->stream_nr);
|
||
continue;
|
||
}
|
||
|
||
/* get stream now */
|
||
stream = &avi->stream[entry->stream_nr];
|
||
|
||
if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
|
||
&& GST_CLOCK_TIME_IS_VALID (entry->ts)
|
||
&& GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
|
||
&& (entry->ts > avi->segment.stop)) {
|
||
goto eos_stop;
|
||
}
|
||
|
||
/* skip empty entries */
|
||
if (entry->size == 0 || !stream->pad) {
|
||
GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
|
||
avi->current_entry - 1, entry->size, stream->pad);
|
||
goto next;
|
||
}
|
||
|
||
GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
|
||
G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
|
||
avi->index_offset + entry->offset, avi->index_offset + entry->offset);
|
||
|
||
/* pull in the data */
|
||
res = gst_pad_pull_range (avi->sinkpad, entry->offset +
|
||
avi->index_offset, entry->size, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
/* check for short buffers, this is EOS as well */
|
||
if (GST_BUFFER_SIZE (buf) < entry->size)
|
||
goto short_buffer;
|
||
|
||
/* invert the picture if needed */
|
||
if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' '))
|
||
buf = gst_avi_demux_invert (stream, buf);
|
||
|
||
/* mark non-keyframes */
|
||
if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
||
|
||
GST_BUFFER_TIMESTAMP (buf) = entry->ts;
|
||
GST_BUFFER_DURATION (buf) = entry->dur;
|
||
gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
|
||
|
||
GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d and time %"
|
||
GST_TIME_FORMAT " on pad %s",
|
||
GST_BUFFER_SIZE (buf), GST_TIME_ARGS (entry->ts),
|
||
GST_PAD_NAME (stream->pad));
|
||
|
||
/* update current position in the segment */
|
||
gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
|
||
|
||
/* mark discont when pending */
|
||
if (stream->discont) {
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
stream->discont = FALSE;
|
||
}
|
||
|
||
res = gst_pad_push (stream->pad, buf);
|
||
|
||
/* combine flows */
|
||
res = gst_avi_demux_combine_flows (avi, stream, res);
|
||
|
||
/* mark as processed, we increment the frame and byte counters then
|
||
* leave the while loop and return the GstFlowReturn */
|
||
processed = TRUE;
|
||
GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
|
||
gst_flow_get_name (res));
|
||
|
||
next:
|
||
stream->current_frame = entry->frames_before + 1;
|
||
stream->current_byte = entry->bytes_before + entry->size;
|
||
} while (!processed);
|
||
|
||
beach:
|
||
GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
|
||
|
||
return res;
|
||
|
||
/* ERRORS */
|
||
eos:
|
||
{
|
||
GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
|
||
avi->current_entry, avi->index_size);
|
||
/* we mark the first stream as EOS */
|
||
res = GST_FLOW_UNEXPECTED;
|
||
goto beach;
|
||
}
|
||
eos_stop:
|
||
{
|
||
GST_LOG_OBJECT (avi, "Found keyframe after segment,"
|
||
" setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
|
||
GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
|
||
res = GST_FLOW_UNEXPECTED;
|
||
goto beach;
|
||
}
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi,
|
||
"pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
|
||
entry->offset + avi->index_offset, entry->size);
|
||
goto beach;
|
||
}
|
||
short_buffer:
|
||
{
|
||
GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
|
||
", only got %d/%d bytes (truncated file?)", entry->offset +
|
||
avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
|
||
gst_buffer_unref (buf);
|
||
res = GST_FLOW_UNEXPECTED;
|
||
goto beach;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read data. If we have an index it delegates to
|
||
* gst_avi_demux_process_next_entry().
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_data (GstAviDemux * avi)
|
||
{
|
||
guint32 tag = 0;
|
||
guint32 size = 0;
|
||
gint stream_nr = 0;
|
||
GstFlowReturn res = GST_FLOW_OK;
|
||
GstFormat format = GST_FORMAT_TIME;
|
||
|
||
/* if we have a avi->index_entries[], we don't want to read
|
||
* the stream linearly, but seek to the next ts/index_entry. */
|
||
if (avi->index_entries != NULL)
|
||
return gst_avi_demux_process_next_entry (avi);
|
||
|
||
if (avi->have_eos) {
|
||
/* Clean adapter, we're done */
|
||
gst_adapter_clear (avi->adapter);
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
if (!gst_avi_demux_sync (avi, &tag, FALSE))
|
||
return FALSE;
|
||
*/
|
||
|
||
/* Iterate until need more data, so adapter won't grow too much */
|
||
while (1) {
|
||
if (!gst_avi_demux_peek_chunk_info (avi, &tag, &size)) {
|
||
return GST_FLOW_OK;
|
||
}
|
||
|
||
GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
|
||
GST_FOURCC_ARGS (tag), size);
|
||
|
||
if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
|
||
((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
|
||
GST_LOG ("Chunk ok");
|
||
} else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
|
||
GST_DEBUG ("Found sub-index tag");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
if ((size > 0) && (size != -1)) {
|
||
GST_DEBUG (" skipping %d bytes for now", size);
|
||
gst_adapter_flush (avi->adapter, 8 + size);
|
||
}
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else if (tag == GST_RIFF_TAG_idx1) {
|
||
GST_DEBUG ("Found index tag, stream done");
|
||
gst_avi_demux_push_event (avi, gst_event_new_eos ());
|
||
avi->have_eos = TRUE;
|
||
return GST_FLOW_OK;
|
||
} else {
|
||
GST_DEBUG ("No more stream chunks, send EOS");
|
||
gst_avi_demux_push_event (avi, gst_event_new_eos ());
|
||
avi->have_eos = TRUE;
|
||
return GST_FLOW_OK;
|
||
}
|
||
|
||
if (!gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
if ((size == 0) || (size == -1))
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
return GST_FLOW_OK;
|
||
}
|
||
GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
|
||
GST_FOURCC_ARGS (tag), size);
|
||
|
||
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
||
|
||
if (stream_nr < 0 || stream_nr >= avi->num_streams) {
|
||
/* recoverable */
|
||
GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
|
||
stream_nr, GST_FOURCC_ARGS (tag));
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
|
||
} else {
|
||
avi_stream_context *stream;
|
||
GstClockTime next_ts = 0;
|
||
GstBuffer *buf;
|
||
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
|
||
/* get buffer */
|
||
buf = gst_adapter_take_buffer (avi->adapter, ((size + 1) & ~1));
|
||
/* patch the size */
|
||
GST_BUFFER_SIZE (buf) = size;
|
||
avi->offset += 8 + ((size + 1) & ~1);
|
||
|
||
/* get time of this buffer */
|
||
stream = &avi->stream[stream_nr];
|
||
gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
|
||
if (format != GST_FORMAT_TIME)
|
||
goto wrong_format;
|
||
|
||
/* set delay (if any)
|
||
if (stream->strh->init_frames == stream->current_frame &&
|
||
stream->delay == 0)
|
||
stream->delay = next_ts;
|
||
*/
|
||
|
||
stream->current_frame++;
|
||
stream->current_byte += size;
|
||
|
||
if (!stream->pad) {
|
||
GST_WARNING ("No pad.");
|
||
gst_buffer_unref (buf);
|
||
} else {
|
||
GstClockTime dur_ts = 0;
|
||
|
||
/* invert the picture if needed */
|
||
if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' ')) {
|
||
buf = gst_avi_demux_invert (stream, buf);
|
||
}
|
||
|
||
gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
|
||
if (format != GST_FORMAT_TIME)
|
||
goto wrong_format;
|
||
|
||
GST_BUFFER_TIMESTAMP (buf) = next_ts;
|
||
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
|
||
gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Pushing buffer with time=%" GST_TIME_FORMAT
|
||
" and size %d over pad %s", GST_TIME_ARGS (next_ts), size,
|
||
GST_PAD_NAME (stream->pad));
|
||
|
||
/* update current position in the segment */
|
||
gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
|
||
|
||
/* mark discont when pending */
|
||
if (stream->discont) {
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
stream->discont = FALSE;
|
||
}
|
||
res = gst_pad_push (stream->pad, buf);
|
||
|
||
/* combine flows */
|
||
res = gst_avi_demux_combine_flows (avi, stream, res);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
|
||
return res;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
done:
|
||
return res;
|
||
|
||
/* ERRORS */
|
||
wrong_format:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
|
||
gst_format_get_name (format));
|
||
res = GST_FLOW_ERROR;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Send pending tags.
|
||
*/
|
||
static void
|
||
push_tag_lists (GstAviDemux * avi)
|
||
{
|
||
guint i;
|
||
|
||
if (!avi->got_tags)
|
||
return;
|
||
|
||
GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
|
||
|
||
for (i = 0; i < avi->num_streams; i++)
|
||
if (avi->stream[i].pad && avi->stream[i].taglist) {
|
||
gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
|
||
avi->stream[i].taglist);
|
||
avi->stream[i].taglist = NULL;
|
||
}
|
||
if (avi->globaltags) {
|
||
gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
|
||
avi->globaltags = NULL;
|
||
}
|
||
avi->got_tags = FALSE;
|
||
GST_DEBUG_OBJECT (avi, "Pushed tag lists");
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_loop (GstPad * pad)
|
||
{
|
||
GstFlowReturn res;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
||
|
||
switch (avi->state) {
|
||
case GST_AVI_DEMUX_START:
|
||
if ((res = gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
avi->state = GST_AVI_DEMUX_HEADER;
|
||
/* fall-through */
|
||
case GST_AVI_DEMUX_HEADER:
|
||
if ((res = gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
avi->state = GST_AVI_DEMUX_MOVI;
|
||
break;
|
||
case GST_AVI_DEMUX_MOVI:
|
||
if (G_UNLIKELY (avi->seek_event)) {
|
||
gst_avi_demux_push_event (avi, avi->seek_event);
|
||
avi->seek_event = NULL;
|
||
}
|
||
if (G_UNLIKELY (avi->got_tags)) {
|
||
push_tag_lists (avi);
|
||
}
|
||
/* process each index entry in turn */
|
||
res = gst_avi_demux_stream_data (avi);
|
||
|
||
/* pause when error */
|
||
if (res != GST_FLOW_OK) {
|
||
GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
break;
|
||
default:
|
||
g_assert_not_reached ();
|
||
}
|
||
|
||
GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
|
||
|
||
return;
|
||
|
||
/* ERRORS */
|
||
pause:
|
||
GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
|
||
avi->segment_running = FALSE;
|
||
gst_pad_pause_task (avi->sinkpad);
|
||
|
||
if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
|
||
gboolean push_eos = TRUE;
|
||
|
||
if (res == GST_FLOW_UNEXPECTED) {
|
||
/* handle end-of-stream/segment */
|
||
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
||
gint64 stop;
|
||
|
||
if ((stop = avi->segment.stop) == -1)
|
||
stop = avi->segment.duration;
|
||
|
||
GST_INFO_OBJECT (avi, "sending segment_done");
|
||
|
||
gst_element_post_message
|
||
(GST_ELEMENT (avi),
|
||
gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
|
||
stop));
|
||
push_eos = FALSE;
|
||
}
|
||
} else {
|
||
/* for fatal errors we post an error message */
|
||
GST_ELEMENT_ERROR (avi, STREAM, FAILED,
|
||
(_("Internal data stream error.")),
|
||
("streaming stopped, reason %s", gst_flow_get_name (res)));
|
||
}
|
||
if (push_eos) {
|
||
GST_INFO_OBJECT (avi, "sending eos");
|
||
if (!(gst_avi_demux_push_event (avi, gst_event_new_eos ()))) {
|
||
/* if we don't error out here it will hand */
|
||
GST_ELEMENT_ERROR (avi, STREAM, FAILED,
|
||
(_("Internal data stream error.")), ("corrupted file"));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
static GstFlowReturn
|
||
gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
|
||
{
|
||
GstFlowReturn res;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
||
|
||
GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
|
||
gst_adapter_push (avi->adapter, buf);
|
||
|
||
switch (avi->state) {
|
||
case GST_AVI_DEMUX_START:
|
||
if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
||
break;
|
||
}
|
||
break;
|
||
case GST_AVI_DEMUX_HEADER:
|
||
if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
||
break;
|
||
}
|
||
break;
|
||
case GST_AVI_DEMUX_MOVI:
|
||
if (G_UNLIKELY (avi->seek_event)) {
|
||
gst_avi_demux_push_event (avi, avi->seek_event);
|
||
avi->seek_event = NULL;
|
||
}
|
||
if (G_UNLIKELY (avi->got_tags)) {
|
||
push_tag_lists (avi);
|
||
}
|
||
res = gst_avi_demux_stream_data (avi);
|
||
break;
|
||
default:
|
||
GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
|
||
("Illegal internal state"));
|
||
res = GST_FLOW_ERROR;
|
||
break;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
|
||
gst_flow_get_name (res));
|
||
|
||
return res;
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_sink_activate (GstPad * sinkpad)
|
||
{
|
||
if (gst_pad_check_pull_range (sinkpad)) {
|
||
return gst_pad_activate_pull (sinkpad, TRUE);
|
||
} else {
|
||
GST_DEBUG ("going to push (streaming) mode");
|
||
return gst_pad_activate_push (sinkpad, TRUE);
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
|
||
{
|
||
GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (sinkpad));
|
||
|
||
if (active) {
|
||
avi->segment_running = TRUE;
|
||
gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop, sinkpad);
|
||
} else {
|
||
gst_pad_stop_task (sinkpad);
|
||
avi->segment_running = FALSE;
|
||
}
|
||
gst_object_unref (avi);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_activate_push (GstPad * pad, gboolean active)
|
||
{
|
||
|
||
if (active) {
|
||
GST_DEBUG ("avi: activating push/chain function");
|
||
} else {
|
||
GST_DEBUG ("avi: deactivating push/chain function");
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static GstStateChangeReturn
|
||
gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
|
||
{
|
||
GstStateChangeReturn ret;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
||
|
||
switch (transition) {
|
||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||
avi->streaming = FALSE;
|
||
gst_segment_init (&avi->segment, GST_FORMAT_TIME);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||
if (ret == GST_STATE_CHANGE_FAILURE)
|
||
goto done;
|
||
|
||
switch (transition) {
|
||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||
gst_avi_demux_reset (avi);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
done:
|
||
return ret;
|
||
}
|