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Original commit message from CVS: * docs/plugins/Makefile.am: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: First round of plugin docs cleansups. * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: Regenerate. * ext/ogg/Makefile.am: * ext/ogg/gstoggmux.c: * ext/ogg/gstoggmux.h: Add header for oggmux. the c-file needs a doc blob still.
1627 lines
50 KiB
C
1627 lines
50 KiB
C
/* OGG muxer plugin for GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include "gstoggmux.h"
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/* memcpy - if someone knows a way to get rid of it, please speak up
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* note: the ogg docs even say you need this... */
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#include <string.h>
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#include <time.h>
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#include <stdlib.h> /* rand, srand, atoi */
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GST_DEBUG_CATEGORY_STATIC (gst_ogg_mux_debug);
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#define GST_CAT_DEFAULT gst_ogg_mux_debug
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/* This isn't generally what you'd want with an end-time macro, because
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technically the end time of a buffer with invalid duration is invalid. But
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for sorting ogg pages this is what we want. */
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#define GST_BUFFER_END_TIME(buf) \
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(GST_BUFFER_DURATION_IS_VALID (buf) \
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? GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf) \
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: GST_BUFFER_TIMESTAMP (buf))
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#define GST_GP_FORMAT "[gp %8" G_GINT64_FORMAT "]"
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typedef enum
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{
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GST_OGG_FLAG_BOS = GST_ELEMENT_FLAG_LAST,
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GST_OGG_FLAG_EOS
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}
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GstOggFlag;
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/* elementfactory information */
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static const GstElementDetails gst_ogg_mux_details =
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GST_ELEMENT_DETAILS ("Ogg muxer",
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"Codec/Muxer",
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"mux ogg streams (info about ogg: http://xiph.org)",
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"Wim Taymans <wim@fluendo.com>");
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/* OggMux signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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/* set to 0.5 seconds by default */
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#define DEFAULT_MAX_DELAY G_GINT64_CONSTANT(500000000)
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#define DEFAULT_MAX_PAGE_DELAY G_GINT64_CONSTANT(500000000)
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enum
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{
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ARG_0,
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ARG_MAX_DELAY,
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ARG_MAX_PAGE_DELAY,
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};
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/ogg")
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);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS ("video/x-theora; "
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"audio/x-vorbis; audio/x-flac; audio/x-speex; "
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"application/x-ogm-video; application/x-ogm-audio; video/x-dirac; "
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"video/x-smoke; text/x-cmml, encoded = (boolean) TRUE")
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);
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static void gst_ogg_mux_base_init (gpointer g_class);
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static void gst_ogg_mux_class_init (GstOggMuxClass * klass);
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static void gst_ogg_mux_init (GstOggMux * ogg_mux);
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static void gst_ogg_mux_finalize (GObject * object);
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static GstFlowReturn
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gst_ogg_mux_collected (GstCollectPads * pads, GstOggMux * ogg_mux);
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static gboolean gst_ogg_mux_handle_src_event (GstPad * pad, GstEvent * event);
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static GstPad *gst_ogg_mux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void gst_ogg_mux_release_pad (GstElement * element, GstPad * pad);
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static void gst_ogg_mux_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_ogg_mux_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_ogg_mux_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_ogg_mux_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_ogg_mux_get_type (void)
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{
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static GType ogg_mux_type = 0;
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if (G_UNLIKELY (ogg_mux_type == 0)) {
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static const GTypeInfo ogg_mux_info = {
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sizeof (GstOggMuxClass),
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gst_ogg_mux_base_init,
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NULL,
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(GClassInitFunc) gst_ogg_mux_class_init,
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NULL,
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NULL,
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sizeof (GstOggMux),
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0,
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(GInstanceInitFunc) gst_ogg_mux_init,
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};
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ogg_mux_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstOggMux", &ogg_mux_info,
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0);
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}
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return ogg_mux_type;
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}
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static void
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gst_ogg_mux_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_set_details (element_class, &gst_ogg_mux_details);
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}
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static void
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gst_ogg_mux_class_init (GstOggMuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_ogg_mux_finalize;
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gobject_class->get_property = gst_ogg_mux_get_property;
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gobject_class->set_property = gst_ogg_mux_set_property;
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gstelement_class->request_new_pad = gst_ogg_mux_request_new_pad;
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gstelement_class->release_pad = gst_ogg_mux_release_pad;
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g_object_class_install_property (gobject_class, ARG_MAX_DELAY,
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g_param_spec_uint64 ("max-delay", "Max delay",
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"Maximum delay in multiplexing streams", 0, G_MAXUINT64,
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DEFAULT_MAX_DELAY, (GParamFlags) G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_MAX_PAGE_DELAY,
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g_param_spec_uint64 ("max-page-delay", "Max page delay",
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"Maximum delay for sending out a page", 0, G_MAXUINT64,
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DEFAULT_MAX_PAGE_DELAY, (GParamFlags) G_PARAM_READWRITE));
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gstelement_class->change_state = gst_ogg_mux_change_state;
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}
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#if 0
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static const GstEventMask *
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gst_ogg_mux_get_sink_event_masks (GstPad * pad)
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{
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static const GstEventMask gst_ogg_mux_sink_event_masks[] = {
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{GST_EVENT_EOS, 0},
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{GST_EVENT_DISCONTINUOUS, 0},
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{0,}
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};
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return gst_ogg_mux_sink_event_masks;
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}
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#endif
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static void
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gst_ogg_mux_clear (GstOggMux * ogg_mux)
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{
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ogg_mux->pulling = NULL;
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ogg_mux->need_headers = TRUE;
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ogg_mux->max_delay = DEFAULT_MAX_DELAY;
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ogg_mux->max_page_delay = DEFAULT_MAX_PAGE_DELAY;
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ogg_mux->delta_pad = NULL;
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ogg_mux->offset = 0;
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ogg_mux->next_ts = 0;
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ogg_mux->last_ts = GST_CLOCK_TIME_NONE;
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}
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static void
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gst_ogg_mux_init (GstOggMux * ogg_mux)
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{
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (ogg_mux);
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ogg_mux->srcpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
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"src"), "src");
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gst_pad_set_event_function (ogg_mux->srcpad, gst_ogg_mux_handle_src_event);
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gst_element_add_pad (GST_ELEMENT (ogg_mux), ogg_mux->srcpad);
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GST_OBJECT_FLAG_SET (GST_ELEMENT (ogg_mux), GST_OGG_FLAG_BOS);
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/* seed random number generator for creation of serial numbers */
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srand (time (NULL));
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ogg_mux->collect = gst_collect_pads_new ();
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gst_collect_pads_set_function (ogg_mux->collect,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_ogg_mux_collected),
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ogg_mux);
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gst_ogg_mux_clear (ogg_mux);
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}
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static void
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gst_ogg_mux_finalize (GObject * object)
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{
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GstOggMux *ogg_mux;
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ogg_mux = GST_OGG_MUX (object);
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if (ogg_mux->collect) {
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gst_object_unref (ogg_mux->collect);
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ogg_mux->collect = NULL;
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}
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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_ogg_mux_ogg_pad_destroy_notify (GstCollectData * data)
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{
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GstOggPad *oggpad = (GstOggPad *) data;
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GstBuffer *buf;
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ogg_stream_clear (&oggpad->stream);
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if (oggpad->pagebuffers) {
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while ((buf = g_queue_pop_head (oggpad->pagebuffers)) != NULL) {
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gst_buffer_unref (buf);
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}
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g_queue_free (oggpad->pagebuffers);
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oggpad->pagebuffers = NULL;
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}
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}
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static GstPadLinkReturn
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gst_ogg_mux_sinkconnect (GstPad * pad, GstPad * peer)
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{
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GstOggMux *ogg_mux;
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ogg_mux = GST_OGG_MUX (gst_pad_get_parent (pad));
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GST_DEBUG_OBJECT (ogg_mux, "sinkconnect triggered on %s", GST_PAD_NAME (pad));
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gst_object_unref (ogg_mux);
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return GST_PAD_LINK_OK;
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}
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static GstPad *
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gst_ogg_mux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * req_name)
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{
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GstOggMux *ogg_mux;
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GstPad *newpad;
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GstElementClass *klass;
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g_return_val_if_fail (templ != NULL, NULL);
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if (templ->direction != GST_PAD_SINK)
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goto wrong_direction;
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g_return_val_if_fail (GST_IS_OGG_MUX (element), NULL);
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ogg_mux = GST_OGG_MUX (element);
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klass = GST_ELEMENT_GET_CLASS (element);
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if (templ != gst_element_class_get_pad_template (klass, "sink_%d"))
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goto wrong_template;
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{
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gint serial;
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gchar *name;
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if (req_name == NULL || strlen (req_name) < 6) {
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/* no name given when requesting the pad, use random serial number */
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serial = rand ();
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} else {
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/* parse serial number from requested padname */
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serial = atoi (&req_name[5]);
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}
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/* create new pad with the name */
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GST_DEBUG_OBJECT (ogg_mux, "Creating new pad for serial %d", serial);
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name = g_strdup_printf ("sink_%d", serial);
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newpad = gst_pad_new_from_template (templ, name);
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g_free (name);
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/* construct our own wrapper data structure for the pad to
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* keep track of its status */
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{
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GstOggPad *oggpad;
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oggpad = (GstOggPad *)
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gst_collect_pads_add_pad_full (ogg_mux->collect, newpad,
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sizeof (GstOggPad), gst_ogg_mux_ogg_pad_destroy_notify);
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ogg_mux->active_pads++;
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oggpad->serial = serial;
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ogg_stream_init (&oggpad->stream, serial);
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oggpad->packetno = 0;
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oggpad->pageno = 0;
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oggpad->eos = FALSE;
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/* we assume there will be some control data first for this pad */
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oggpad->state = GST_OGG_PAD_STATE_CONTROL;
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oggpad->new_page = TRUE;
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oggpad->first_delta = FALSE;
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oggpad->prev_delta = FALSE;
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oggpad->pagebuffers = g_queue_new ();
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}
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}
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/* setup some pad functions */
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gst_pad_set_link_function (newpad, gst_ogg_mux_sinkconnect);
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/* dd the pad to the element */
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gst_element_add_pad (element, newpad);
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return newpad;
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/* ERRORS */
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wrong_direction:
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{
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g_warning ("ogg_mux: request pad that is not a SINK pad\n");
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return NULL;
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}
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wrong_template:
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{
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g_warning ("ogg_mux: this is not our template!\n");
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return NULL;
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}
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}
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static void
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gst_ogg_mux_release_pad (GstElement * element, GstPad * pad)
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{
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GstOggMux *ogg_mux;
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ogg_mux = GST_OGG_MUX (gst_pad_get_parent (pad));
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gst_collect_pads_remove_pad (ogg_mux->collect, pad);
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gst_element_remove_pad (element, pad);
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gst_object_unref (ogg_mux);
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}
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/* handle events */
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static gboolean
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gst_ogg_mux_handle_src_event (GstPad * pad, GstEvent * event)
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{
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GstEventType type;
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type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
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switch (type) {
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case GST_EVENT_SEEK:
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/* disable seeking for now */
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return FALSE;
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default:
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break;
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}
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return gst_pad_event_default (pad, event);
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}
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static GstBuffer *
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gst_ogg_mux_buffer_from_page (GstOggMux * mux, ogg_page * page, gboolean delta)
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{
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GstBuffer *buffer;
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/* allocate space for header and body */
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buffer = gst_buffer_new_and_alloc (page->header_len + page->body_len);
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memcpy (GST_BUFFER_DATA (buffer), page->header, page->header_len);
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memcpy (GST_BUFFER_DATA (buffer) + page->header_len,
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page->body, page->body_len);
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/* Here we set granulepos as our OFFSET_END to give easy direct access to
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* this value later. Before we push it, we reset this to OFFSET + SIZE
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* (see gst_ogg_mux_push_buffer). */
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GST_BUFFER_OFFSET_END (buffer) = ogg_page_granulepos (page);
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if (delta)
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GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
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GST_LOG_OBJECT (mux, GST_GP_FORMAT
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" created buffer %p from ogg page", ogg_page_granulepos (page), buffer);
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return buffer;
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}
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static GstFlowReturn
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gst_ogg_mux_push_buffer (GstOggMux * mux, GstBuffer * buffer)
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{
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GstCaps *caps;
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/* fix up OFFSET and OFFSET_END again */
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GST_BUFFER_OFFSET (buffer) = mux->offset;
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mux->offset += GST_BUFFER_SIZE (buffer);
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GST_BUFFER_OFFSET_END (buffer) = mux->offset;
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/* Ensure we have monotonically increasing timestamps in the output. */
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if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
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if (mux->last_ts != GST_CLOCK_TIME_NONE &&
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GST_BUFFER_TIMESTAMP (buffer) < mux->last_ts)
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GST_BUFFER_TIMESTAMP (buffer) = mux->last_ts;
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else
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mux->last_ts = GST_BUFFER_TIMESTAMP (buffer);
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}
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caps = gst_pad_get_negotiated_caps (mux->srcpad);
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gst_buffer_set_caps (buffer, caps);
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gst_caps_unref (caps);
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return gst_pad_push (mux->srcpad, buffer);
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|
}
|
|
|
|
/* if all queues have at least one page, dequeue the page with the lowest
|
|
* timestamp */
|
|
static gboolean
|
|
gst_ogg_mux_dequeue_page (GstOggMux * mux, GstFlowReturn * flowret)
|
|
{
|
|
GSList *walk;
|
|
GstOggPad *opad = NULL; /* "oldest" pad */
|
|
GstClockTime oldest = GST_CLOCK_TIME_NONE;
|
|
GstBuffer *buf = NULL;
|
|
gboolean ret = FALSE;
|
|
|
|
*flowret = GST_FLOW_OK;
|
|
|
|
walk = mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad = (GstOggPad *) walk->data;
|
|
|
|
/* We need each queue to either be at EOS, or have one or more pages
|
|
* available with a set granulepos (i.e. not -1), otherwise we don't have
|
|
* enough data yet to determine which stream needs to go next for correct
|
|
* time ordering. */
|
|
if (pad->pagebuffers->length == 0) {
|
|
if (pad->eos) {
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
"pad is EOS, skipping for dequeue decision");
|
|
} else {
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
"no pages in this queue, can't dequeue");
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
/* We then need to check for a non-negative granulepos */
|
|
int i;
|
|
gboolean valid = FALSE;
|
|
|
|
for (i = 0; i < pad->pagebuffers->length; i++) {
|
|
buf = g_queue_peek_nth (pad->pagebuffers, i);
|
|
/* Here we check the OFFSET_END, which is actually temporarily the
|
|
* granulepos value for this buffer */
|
|
if (GST_BUFFER_OFFSET_END (buf) != -1) {
|
|
valid = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
if (!valid) {
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
"No page timestamps in queue, can't dequeue");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
walk = g_slist_next (walk);
|
|
}
|
|
|
|
walk = mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad = (GstOggPad *) walk->data;
|
|
|
|
/* any page with a granulepos of -1 can be pushed immediately.
|
|
* TODO: it CAN be, but it seems silly to do so? */
|
|
buf = g_queue_peek_head (pad->pagebuffers);
|
|
while (buf && GST_BUFFER_OFFSET_END (buf) == -1) {
|
|
GST_LOG_OBJECT (pad->collect.pad, "[gp -1] pushing page");
|
|
g_queue_pop_head (pad->pagebuffers);
|
|
*flowret = gst_ogg_mux_push_buffer (mux, buf);
|
|
buf = g_queue_peek_head (pad->pagebuffers);
|
|
ret = TRUE;
|
|
}
|
|
|
|
if (buf) {
|
|
/* if no oldest buffer yet, take this one */
|
|
if (oldest == GST_CLOCK_TIME_NONE) {
|
|
GST_LOG_OBJECT (mux, "no oldest yet, taking buffer %p from pad %"
|
|
GST_PTR_FORMAT " with gp time %" GST_TIME_FORMAT,
|
|
buf, pad->collect.pad, GST_TIME_ARGS (GST_BUFFER_OFFSET (buf)));
|
|
oldest = GST_BUFFER_OFFSET (buf);
|
|
opad = pad;
|
|
} else {
|
|
/* if we have an oldest, compare with this one */
|
|
if (GST_BUFFER_OFFSET (buf) < oldest) {
|
|
GST_LOG_OBJECT (mux, "older buffer %p, taking from pad %"
|
|
GST_PTR_FORMAT " with gp time %" GST_TIME_FORMAT,
|
|
buf, pad->collect.pad, GST_TIME_ARGS (GST_BUFFER_OFFSET (buf)));
|
|
oldest = GST_BUFFER_OFFSET (buf);
|
|
opad = pad;
|
|
}
|
|
}
|
|
}
|
|
walk = g_slist_next (walk);
|
|
}
|
|
|
|
if (oldest != GST_CLOCK_TIME_NONE) {
|
|
g_assert (opad);
|
|
buf = g_queue_pop_head (opad->pagebuffers);
|
|
GST_LOG_OBJECT (opad->collect.pad,
|
|
GST_GP_FORMAT " pushing oldest page buffer %p (granulepos time %"
|
|
GST_TIME_FORMAT ")", GST_BUFFER_OFFSET_END (buf), buf,
|
|
GST_TIME_ARGS (GST_BUFFER_OFFSET (buf)));
|
|
*flowret = gst_ogg_mux_push_buffer (mux, buf);
|
|
ret = TRUE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* put the given ogg page on a per-pad queue, timestamping it correctly.
|
|
* after that, dequeue and push as many pages as possible.
|
|
* Caller should make sure:
|
|
* pad->timestamp was set with the timestamp of the first packet put
|
|
* on the page
|
|
* pad->timestamp_end was set with the timestamp + duration of the last packet
|
|
* put on the page
|
|
* pad->gp_time was set with the time matching the gp of the last
|
|
* packet put on the page
|
|
*
|
|
* will also reset timestamp and timestamp_end, so caller func can restart
|
|
* counting.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_ogg_mux_pad_queue_page (GstOggMux * mux, GstOggPad * pad, ogg_page * page,
|
|
gboolean delta)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstBuffer *buffer = gst_ogg_mux_buffer_from_page (mux, page, delta);
|
|
|
|
/* take the timestamp of the first packet on this page */
|
|
GST_BUFFER_TIMESTAMP (buffer) = pad->timestamp;
|
|
GST_BUFFER_DURATION (buffer) = pad->timestamp_end - pad->timestamp;
|
|
/* take the gp time of the last completed packet on this page */
|
|
GST_BUFFER_OFFSET (buffer) = pad->gp_time;
|
|
|
|
/* the next page will start where the current page's end time leaves off */
|
|
pad->timestamp = pad->timestamp_end;
|
|
|
|
g_queue_push_tail (pad->pagebuffers, buffer);
|
|
GST_LOG_OBJECT (pad->collect.pad, GST_GP_FORMAT
|
|
" queued buffer page %p (gp time %"
|
|
GST_TIME_FORMAT ", timestamp %" GST_TIME_FORMAT
|
|
"), %d page buffers queued", ogg_page_granulepos (page),
|
|
buffer, GST_TIME_ARGS (GST_BUFFER_OFFSET (buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
|
|
g_queue_get_length (pad->pagebuffers));
|
|
|
|
while (gst_ogg_mux_dequeue_page (mux, &ret)) {
|
|
if (ret != GST_FLOW_OK)
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Given two pads, compare the buffers queued on it.
|
|
* Returns:
|
|
* 0 if they have an equal priority
|
|
* -1 if the first is better
|
|
* 1 if the second is better
|
|
* Priority decided by: a) validity, b) older timestamp, c) smaller number
|
|
* of muxed pages
|
|
*/
|
|
static gint
|
|
gst_ogg_mux_compare_pads (GstOggMux * ogg_mux, GstOggPad * first,
|
|
GstOggPad * second)
|
|
{
|
|
guint64 firsttime, secondtime;
|
|
|
|
/* if the first pad doesn't contain anything or is even NULL, return
|
|
* the second pad as best candidate and vice versa */
|
|
if (first == NULL || (first->buffer == NULL && first->next_buffer == NULL))
|
|
return 1;
|
|
if (second == NULL || (second->buffer == NULL && second->next_buffer == NULL))
|
|
return -1;
|
|
|
|
/* no timestamp on first buffer, it must go first */
|
|
if (first->buffer)
|
|
firsttime = GST_BUFFER_TIMESTAMP (first->buffer);
|
|
else
|
|
firsttime = GST_BUFFER_TIMESTAMP (first->next_buffer);
|
|
if (firsttime == GST_CLOCK_TIME_NONE)
|
|
return -1;
|
|
|
|
/* no timestamp on second buffer, it must go first */
|
|
if (second->buffer)
|
|
secondtime = GST_BUFFER_TIMESTAMP (second->buffer);
|
|
else
|
|
secondtime = GST_BUFFER_TIMESTAMP (second->next_buffer);
|
|
if (secondtime == GST_CLOCK_TIME_NONE)
|
|
return 1;
|
|
|
|
/* first buffer has higher timestamp, second one should go first */
|
|
if (secondtime < firsttime)
|
|
return 1;
|
|
/* second buffer has higher timestamp, first one should go first */
|
|
else if (secondtime > firsttime)
|
|
return -1;
|
|
else {
|
|
/* buffers with equal timestamps, prefer the pad that has the
|
|
* least number of pages muxed */
|
|
if (second->pageno < first->pageno)
|
|
return 1;
|
|
else if (second->pageno > first->pageno)
|
|
return -1;
|
|
}
|
|
|
|
/* same priority if all of the above failed */
|
|
return 0;
|
|
}
|
|
|
|
/* make sure at least one buffer is queued on all pads, two if possible
|
|
*
|
|
* if pad->buffer == NULL, pad->next_buffer != NULL, then
|
|
* we do not know if the buffer is the last or not
|
|
* if pad->buffer != NULL, pad->next_buffer != NULL, then
|
|
* pad->buffer is not the last buffer for the pad
|
|
* if pad->buffer != NULL, pad->next_buffer == NULL, then
|
|
* pad->buffer if the last buffer for the pad
|
|
*
|
|
* returns a pointer to an oggpad that holds the best buffer, or
|
|
* NULL when no pad was usable. "best" means the buffer marked
|
|
* with the lowest timestamp. If best->buffer == NULL then nothing
|
|
* should be done until more data arrives */
|
|
static GstOggPad *
|
|
gst_ogg_mux_queue_pads (GstOggMux * ogg_mux)
|
|
{
|
|
GstOggPad *bestpad = NULL, *still_hungry = NULL;
|
|
GSList *walk;
|
|
|
|
/* try to make sure we have a buffer from each usable pad first */
|
|
walk = ogg_mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad;
|
|
GstCollectData *data;
|
|
|
|
data = (GstCollectData *) walk->data;
|
|
pad = (GstOggPad *) data;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
GST_LOG_OBJECT (data->pad, "looking at pad for buffer");
|
|
|
|
/* try to get a new buffer for this pad if needed and possible */
|
|
if (pad->buffer == NULL) {
|
|
GstBuffer *buf;
|
|
gboolean incaps;
|
|
|
|
/* shift the buffer along if needed (it's okay if next_buffer is NULL) */
|
|
if (pad->buffer == NULL) {
|
|
GST_LOG_OBJECT (data->pad, "shifting buffer %" GST_PTR_FORMAT,
|
|
pad->next_buffer);
|
|
pad->buffer = pad->next_buffer;
|
|
pad->next_buffer = NULL;
|
|
}
|
|
|
|
buf = gst_collect_pads_pop (ogg_mux->collect, data);
|
|
GST_LOG_OBJECT (data->pad, "popped buffer %" GST_PTR_FORMAT, buf);
|
|
|
|
/* On EOS we get a NULL buffer */
|
|
if (buf != NULL) {
|
|
if (ogg_mux->delta_pad == NULL &&
|
|
GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT))
|
|
ogg_mux->delta_pad = pad;
|
|
|
|
incaps = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
|
|
/* if we need headers */
|
|
if (pad->state == GST_OGG_PAD_STATE_CONTROL) {
|
|
/* and we have one */
|
|
if (incaps) {
|
|
GST_DEBUG_OBJECT (ogg_mux,
|
|
"got incaps buffer in control state, ignoring");
|
|
/* just ignore */
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
} else {
|
|
GST_DEBUG_OBJECT (ogg_mux,
|
|
"got data buffer in control state, switching " "to data mode");
|
|
/* this is a data buffer so switch to data state */
|
|
pad->state = GST_OGG_PAD_STATE_DATA;
|
|
}
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (data->pad, "EOS on pad");
|
|
if (!pad->eos) {
|
|
ogg_page page;
|
|
GstFlowReturn ret;
|
|
|
|
/* it's no longer active */
|
|
ogg_mux->active_pads--;
|
|
|
|
/* Just gone to EOS. Flush existing page(s) */
|
|
pad->eos = TRUE;
|
|
|
|
while (ogg_stream_flush (&pad->stream, &page)) {
|
|
/* Place page into the per-pad queue */
|
|
ret = gst_ogg_mux_pad_queue_page (ogg_mux, pad, &page,
|
|
pad->first_delta);
|
|
/* increment the page number counter */
|
|
pad->pageno++;
|
|
/* mark other pages as delta */
|
|
pad->first_delta = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
pad->next_buffer = buf;
|
|
}
|
|
|
|
/* we should have a buffer now, see if it is the best pad to
|
|
* pull on */
|
|
if (pad->buffer || pad->next_buffer) {
|
|
if (gst_ogg_mux_compare_pads (ogg_mux, bestpad, pad) > 0) {
|
|
GST_LOG_OBJECT (data->pad,
|
|
"new best pad, with buffers %" GST_PTR_FORMAT
|
|
" and %" GST_PTR_FORMAT, pad->buffer, pad->next_buffer);
|
|
|
|
bestpad = pad;
|
|
}
|
|
} else if (!pad->eos) {
|
|
GST_LOG_OBJECT (data->pad, "hungry pad");
|
|
still_hungry = pad;
|
|
}
|
|
}
|
|
|
|
if (still_hungry)
|
|
/* drop back into collectpads... */
|
|
return still_hungry;
|
|
else
|
|
return bestpad;
|
|
}
|
|
|
|
static GList *
|
|
gst_ogg_mux_get_headers (GstOggPad * pad)
|
|
{
|
|
GList *res = NULL;
|
|
GstOggMux *ogg_mux;
|
|
GstStructure *structure;
|
|
GstCaps *caps;
|
|
GstPad *thepad;
|
|
|
|
thepad = pad->collect.pad;
|
|
|
|
ogg_mux = GST_OGG_MUX (GST_PAD_PARENT (thepad));
|
|
|
|
GST_LOG_OBJECT (thepad, "getting headers");
|
|
|
|
caps = gst_pad_get_negotiated_caps (thepad);
|
|
if (caps != NULL) {
|
|
const GValue *streamheader;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
if (strcmp (gst_structure_get_name (structure), "video/x-dirac") == 0) {
|
|
GstBuffer *buf = gst_buffer_new_and_alloc (16);
|
|
int fps_n = 12;
|
|
int fps_d = 1;
|
|
|
|
gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d);
|
|
|
|
memcpy (GST_BUFFER_DATA (buf), "KW-DIRAC", 8);
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + 8, fps_n);
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + 12, fps_d);
|
|
|
|
res = g_list_append (res, buf);
|
|
|
|
//res = g_list_append (res, gst_buffer_ref(pad->buffer));
|
|
} else {
|
|
streamheader = gst_structure_get_value (structure, "streamheader");
|
|
if (streamheader != NULL) {
|
|
GST_LOG_OBJECT (thepad, "got header");
|
|
if (G_VALUE_TYPE (streamheader) == GST_TYPE_ARRAY) {
|
|
GArray *bufarr = g_value_peek_pointer (streamheader);
|
|
gint i;
|
|
|
|
GST_LOG_OBJECT (thepad, "got fixed list");
|
|
|
|
for (i = 0; i < bufarr->len; i++) {
|
|
GValue *bufval = &g_array_index (bufarr, GValue, i);
|
|
|
|
GST_LOG_OBJECT (thepad, "item %d", i);
|
|
if (G_VALUE_TYPE (bufval) == GST_TYPE_BUFFER) {
|
|
GstBuffer *buf = g_value_peek_pointer (bufval);
|
|
|
|
GST_LOG_OBJECT (thepad, "adding item %d to header list", i);
|
|
|
|
gst_buffer_ref (buf);
|
|
res = g_list_append (res, buf);
|
|
}
|
|
}
|
|
} else {
|
|
GST_LOG_OBJECT (thepad, "streamheader is not fixed list");
|
|
}
|
|
} else {
|
|
GST_LOG_OBJECT (thepad, "caps don't have streamheader");
|
|
}
|
|
}
|
|
gst_caps_unref (caps);
|
|
} else {
|
|
GST_LOG_OBJECT (thepad, "got empty caps as negotiated format");
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_ogg_mux_set_header_on_caps (GstCaps * caps, GList * buffers)
|
|
{
|
|
GstStructure *structure;
|
|
GValue array = { 0 };
|
|
GList *walk = buffers;
|
|
|
|
caps = gst_caps_make_writable (caps);
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
/* put buffers in a fixed list */
|
|
g_value_init (&array, GST_TYPE_ARRAY);
|
|
|
|
while (walk) {
|
|
GstBuffer *buf = GST_BUFFER (walk->data);
|
|
GstBuffer *copy;
|
|
GValue value = { 0 };
|
|
|
|
walk = walk->next;
|
|
|
|
/* mark buffer */
|
|
GST_LOG ("Setting IN_CAPS on buffer of length %d", GST_BUFFER_SIZE (buf));
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
|
|
|
|
g_value_init (&value, GST_TYPE_BUFFER);
|
|
copy = gst_buffer_copy (buf);
|
|
gst_value_set_buffer (&value, copy);
|
|
gst_buffer_unref (copy);
|
|
gst_value_array_append_value (&array, &value);
|
|
g_value_unset (&value);
|
|
}
|
|
gst_structure_set_value (structure, "streamheader", &array);
|
|
g_value_unset (&array);
|
|
|
|
return caps;
|
|
}
|
|
|
|
/*
|
|
* For each pad we need to write out one (small) header in one
|
|
* page that allows decoders to identify the type of the stream.
|
|
* After that we need to write out all extra info for the decoders.
|
|
* In the case of a codec that also needs data as configuration, we can
|
|
* find that info in the streamcaps.
|
|
* After writing the headers we must start a new page for the data.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_ogg_mux_send_headers (GstOggMux * mux)
|
|
{
|
|
GSList *walk;
|
|
GList *hbufs, *hwalk;
|
|
GstCaps *caps;
|
|
GstFlowReturn ret;
|
|
|
|
hbufs = NULL;
|
|
ret = GST_FLOW_OK;
|
|
|
|
GST_LOG_OBJECT (mux, "collecting headers");
|
|
|
|
walk = mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad;
|
|
GstPad *thepad;
|
|
|
|
pad = (GstOggPad *) walk->data;
|
|
thepad = pad->collect.pad;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
GST_LOG_OBJECT (mux, "looking at pad %s:%s", GST_DEBUG_PAD_NAME (thepad));
|
|
|
|
/* if the pad has no buffer, we don't care */
|
|
if (pad->buffer == NULL && pad->next_buffer == NULL)
|
|
continue;
|
|
|
|
/* now figure out the headers */
|
|
pad->headers = gst_ogg_mux_get_headers (pad);
|
|
}
|
|
|
|
GST_LOG_OBJECT (mux, "creating BOS pages");
|
|
walk = mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad;
|
|
GstBuffer *buf;
|
|
ogg_packet packet;
|
|
ogg_page page;
|
|
GstPad *thepad;
|
|
GstCaps *caps;
|
|
GstStructure *structure;
|
|
GstBuffer *hbuf;
|
|
|
|
pad = (GstOggPad *) walk->data;
|
|
thepad = pad->collect.pad;
|
|
caps = gst_pad_get_negotiated_caps (thepad);
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
walk = walk->next;
|
|
|
|
pad->packetno = 0;
|
|
|
|
GST_LOG_OBJECT (thepad, "looping over headers");
|
|
|
|
if (pad->headers) {
|
|
buf = GST_BUFFER (pad->headers->data);
|
|
pad->headers = g_list_remove (pad->headers, buf);
|
|
} else if (pad->buffer) {
|
|
buf = pad->buffer;
|
|
gst_buffer_ref (buf);
|
|
} else if (pad->next_buffer) {
|
|
buf = pad->next_buffer;
|
|
gst_buffer_ref (buf);
|
|
} else {
|
|
/* fixme -- should be caught in the previous list traversal. */
|
|
GST_OBJECT_LOCK (pad);
|
|
g_critical ("No headers or buffers on pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pad);
|
|
continue;
|
|
}
|
|
|
|
/* create a packet from the buffer */
|
|
packet.packet = GST_BUFFER_DATA (buf);
|
|
packet.bytes = GST_BUFFER_SIZE (buf);
|
|
packet.granulepos = GST_BUFFER_OFFSET_END (buf);
|
|
if (packet.granulepos == -1)
|
|
packet.granulepos = 0;
|
|
/* mark BOS and packet number */
|
|
packet.b_o_s = (pad->packetno == 0);
|
|
packet.packetno = pad->packetno++;
|
|
/* mark EOS */
|
|
packet.e_o_s = 0;
|
|
|
|
/* swap the packet in */
|
|
ogg_stream_packetin (&pad->stream, &packet);
|
|
gst_buffer_unref (buf);
|
|
|
|
GST_LOG_OBJECT (thepad, "flushing out BOS page");
|
|
if (!ogg_stream_flush (&pad->stream, &page))
|
|
g_critical ("Could not flush BOS page");
|
|
|
|
hbuf = gst_ogg_mux_buffer_from_page (mux, &page, FALSE);
|
|
|
|
GST_LOG_OBJECT (mux, "swapped out page with mime type %s",
|
|
gst_structure_get_name (structure));
|
|
|
|
/* quick hack: put Theora and Dirac video pages at the front.
|
|
* Ideally, we would have a settable enum for which Ogg
|
|
* profile we work with, and order based on that.
|
|
* (FIXME: if there is more than one video stream, shouldn't we only put
|
|
* one's BOS into the first page, followed by an audio stream's BOS, and
|
|
* only then followed by the remaining video and audio streams?) */
|
|
if (gst_structure_has_name (structure, "video/x-theora")) {
|
|
GST_DEBUG_OBJECT (thepad, "putting %s page at the front", "Theora");
|
|
hbufs = g_list_prepend (hbufs, hbuf);
|
|
} else if (gst_structure_has_name (structure, "video/x-dirac")) {
|
|
GST_DEBUG_OBJECT (thepad, "putting %s page at the front", "Dirac");
|
|
hbufs = g_list_prepend (hbufs, hbuf);
|
|
} else {
|
|
hbufs = g_list_append (hbufs, hbuf);
|
|
}
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
GST_LOG_OBJECT (mux, "creating next headers");
|
|
walk = mux->collect->data;
|
|
while (walk) {
|
|
GstOggPad *pad;
|
|
GstPad *thepad;
|
|
|
|
pad = (GstOggPad *) walk->data;
|
|
thepad = pad->collect.pad;
|
|
|
|
walk = walk->next;
|
|
|
|
GST_LOG_OBJECT (mux, "looping over headers for pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (thepad));
|
|
|
|
hwalk = pad->headers;
|
|
while (hwalk) {
|
|
GstBuffer *buf = GST_BUFFER (hwalk->data);
|
|
ogg_packet packet;
|
|
ogg_page page;
|
|
|
|
hwalk = hwalk->next;
|
|
|
|
/* create a packet from the buffer */
|
|
packet.packet = GST_BUFFER_DATA (buf);
|
|
packet.bytes = GST_BUFFER_SIZE (buf);
|
|
packet.granulepos = GST_BUFFER_OFFSET_END (buf);
|
|
if (packet.granulepos == -1)
|
|
packet.granulepos = 0;
|
|
/* mark BOS and packet number */
|
|
packet.b_o_s = (pad->packetno == 0);
|
|
packet.packetno = pad->packetno++;
|
|
/* mark EOS */
|
|
packet.e_o_s = 0;
|
|
|
|
/* swap the packet in */
|
|
ogg_stream_packetin (&pad->stream, &packet);
|
|
gst_buffer_unref (buf);
|
|
|
|
/* if last header, flush page */
|
|
if (hwalk == NULL) {
|
|
GST_LOG_OBJECT (mux,
|
|
"flushing page as packet %" G_GUINT64_FORMAT " is first or "
|
|
"last packet", pad->packetno);
|
|
while (ogg_stream_flush (&pad->stream, &page)) {
|
|
GstBuffer *hbuf = gst_ogg_mux_buffer_from_page (mux, &page, FALSE);
|
|
|
|
GST_LOG_OBJECT (mux, "swapped out page");
|
|
hbufs = g_list_append (hbufs, hbuf);
|
|
}
|
|
} else {
|
|
GST_LOG_OBJECT (mux, "try to swap out page");
|
|
/* just try to swap out a page then */
|
|
while (ogg_stream_pageout (&pad->stream, &page) > 0) {
|
|
GstBuffer *hbuf = gst_ogg_mux_buffer_from_page (mux, &page, FALSE);
|
|
|
|
GST_LOG_OBJECT (mux, "swapped out page");
|
|
hbufs = g_list_append (hbufs, hbuf);
|
|
}
|
|
}
|
|
}
|
|
g_list_free (pad->headers);
|
|
pad->headers = NULL;
|
|
}
|
|
/* hbufs holds all buffers for the headers now */
|
|
|
|
/* create caps with the buffers */
|
|
caps = gst_pad_get_caps (mux->srcpad);
|
|
if (caps) {
|
|
caps = gst_ogg_mux_set_header_on_caps (caps, hbufs);
|
|
gst_pad_set_caps (mux->srcpad, caps);
|
|
gst_caps_unref (caps);
|
|
}
|
|
/* and send the buffers */
|
|
hwalk = hbufs;
|
|
while (hwalk) {
|
|
GstBuffer *buf = GST_BUFFER (hwalk->data);
|
|
|
|
hwalk = hwalk->next;
|
|
|
|
if ((ret = gst_ogg_mux_push_buffer (mux, buf)) != GST_FLOW_OK)
|
|
break;
|
|
}
|
|
g_list_free (hbufs);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* this function is called to process data on the best pending pad.
|
|
*
|
|
* basic idea:
|
|
*
|
|
* 1) store the selected pad and keep on pulling until we fill a
|
|
* complete ogg page or the ogg page is filled above the max-delay
|
|
* threshold. This is needed because the ogg spec says that
|
|
* you should fill a complete page with data from the same logical
|
|
* stream. When the page is filled, go back to 1).
|
|
* 2) before filling a page, read ahead one more buffer to see if this
|
|
* packet is the last of the stream. We need to do this because the ogg
|
|
* spec mandates that the last packet should have the EOS flag set before
|
|
* sending it to ogg. if pad->buffer is NULL we need to wait to find out
|
|
* whether there are any more buffers.
|
|
* 3) pages get queued on a per-pad queue. Every time a page is queued, a
|
|
* dequeue is called, which will dequeue the oldest page on any pad, provided
|
|
* that ALL pads have at least one marked page in the queue (or remaining
|
|
* pads are at EOS)
|
|
*/
|
|
static GstFlowReturn
|
|
gst_ogg_mux_process_best_pad (GstOggMux * ogg_mux, GstOggPad * best)
|
|
{
|
|
gboolean delta_unit;
|
|
GstFlowReturn ret;
|
|
gint64 granulepos = 0;
|
|
GstClockTime timestamp, gp_time;
|
|
|
|
GST_LOG_OBJECT (ogg_mux, "best pad %" GST_PTR_FORMAT
|
|
", currently pulling from %" GST_PTR_FORMAT, best->collect.pad,
|
|
ogg_mux->pulling);
|
|
|
|
/* best->buffer is non-NULL, either the pad is EOS's or there is a next
|
|
* buffer */
|
|
if (best->next_buffer == NULL && !best->eos) {
|
|
GST_WARNING_OBJECT (ogg_mux, "no subsequent buffer and EOS not reached");
|
|
return GST_FLOW_WRONG_STATE;
|
|
}
|
|
|
|
/* if we were already pulling from one pad, but the new "best" buffer is
|
|
* from another pad, we need to check if we have reason to flush a page
|
|
* for the pad we were pulling from before */
|
|
if (ogg_mux->pulling && best &&
|
|
ogg_mux->pulling != best && ogg_mux->pulling->buffer) {
|
|
GstOggPad *pad = ogg_mux->pulling;
|
|
|
|
GstClockTime last_ts = GST_BUFFER_END_TIME (pad->buffer);
|
|
|
|
/* if the next packet in the current page is going to make the page
|
|
* too long, we need to flush */
|
|
if (last_ts > ogg_mux->next_ts + ogg_mux->max_delay) {
|
|
ogg_page page;
|
|
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT " stored packet %" G_GINT64_FORMAT
|
|
" will make page too long, flushing",
|
|
GST_BUFFER_OFFSET_END (pad->buffer), pad->stream.packetno);
|
|
|
|
while (ogg_stream_flush (&pad->stream, &page)) {
|
|
/* end time of this page is the timestamp of the next buffer */
|
|
ogg_mux->pulling->timestamp_end = GST_BUFFER_TIMESTAMP (pad->buffer);
|
|
/* Place page into the per-pad queue */
|
|
ret = gst_ogg_mux_pad_queue_page (ogg_mux, pad, &page,
|
|
pad->first_delta);
|
|
/* increment the page number counter */
|
|
pad->pageno++;
|
|
/* mark other pages as delta */
|
|
pad->first_delta = TRUE;
|
|
}
|
|
pad->new_page = TRUE;
|
|
ogg_mux->pulling = NULL;
|
|
}
|
|
}
|
|
|
|
/* if we don't know which pad to pull on, use the best one */
|
|
if (ogg_mux->pulling == NULL) {
|
|
ogg_mux->pulling = best;
|
|
GST_LOG_OBJECT (ogg_mux->pulling->collect.pad, "pulling from best pad");
|
|
|
|
/* remember timestamp and gp time of first buffer for this new pad */
|
|
if (ogg_mux->pulling != NULL) {
|
|
ogg_mux->next_ts = GST_BUFFER_TIMESTAMP (ogg_mux->pulling->buffer);
|
|
GST_LOG_OBJECT (ogg_mux->pulling->collect.pad, "updated times, next ts %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (ogg_mux->next_ts));
|
|
} else {
|
|
/* no pad to pull on, send EOS */
|
|
gst_pad_push_event (ogg_mux->srcpad, gst_event_new_eos ());
|
|
return GST_FLOW_WRONG_STATE;
|
|
}
|
|
}
|
|
|
|
if (ogg_mux->need_headers) {
|
|
ret = gst_ogg_mux_send_headers (ogg_mux);
|
|
ogg_mux->need_headers = FALSE;
|
|
}
|
|
|
|
/* we are pulling from a pad, continue to do so until a page
|
|
* has been filled and queued */
|
|
if (ogg_mux->pulling != NULL) {
|
|
ogg_packet packet;
|
|
ogg_page page;
|
|
GstBuffer *buf, *tmpbuf;
|
|
GstOggPad *pad = ogg_mux->pulling;
|
|
gint64 duration;
|
|
gboolean force_flush;
|
|
|
|
GST_LOG_OBJECT (ogg_mux->pulling->collect.pad, "pulling from pad");
|
|
|
|
/* now see if we have a buffer */
|
|
buf = pad->buffer;
|
|
if (buf == NULL) {
|
|
GST_DEBUG_OBJECT (ogg_mux, "pad was EOS");
|
|
ogg_mux->pulling = NULL;
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
delta_unit = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
duration = GST_BUFFER_DURATION (buf);
|
|
|
|
/* if the current "next timestamp" on the pad is unset, then this is the
|
|
* first packet on the new page. Update our pad's page timestamp */
|
|
if (ogg_mux->pulling->timestamp == GST_CLOCK_TIME_NONE) {
|
|
ogg_mux->pulling->timestamp = GST_BUFFER_TIMESTAMP (buf);
|
|
GST_LOG_OBJECT (ogg_mux->pulling->collect.pad,
|
|
"updated pad timestamp to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
|
|
}
|
|
/* create a packet from the buffer */
|
|
packet.packet = GST_BUFFER_DATA (buf);
|
|
packet.bytes = GST_BUFFER_SIZE (buf);
|
|
packet.granulepos = GST_BUFFER_OFFSET_END (buf);
|
|
if (packet.granulepos == -1)
|
|
packet.granulepos = 0;
|
|
/* mark BOS and packet number */
|
|
packet.b_o_s = (pad->packetno == 0);
|
|
packet.packetno = pad->packetno++;
|
|
GST_LOG_OBJECT (pad->collect.pad, GST_GP_FORMAT
|
|
" packet %" G_GINT64_FORMAT " (%ld bytes) created from buffer",
|
|
packet.granulepos, packet.packetno, packet.bytes);
|
|
|
|
packet.e_o_s = (pad->eos ? 1 : 0);
|
|
tmpbuf = NULL;
|
|
|
|
/* we flush when we see a new keyframe */
|
|
force_flush = (pad->prev_delta && !delta_unit);
|
|
if (duration != -1) {
|
|
pad->duration += duration;
|
|
/* if page duration exceeds max, flush page */
|
|
if (pad->duration > ogg_mux->max_page_delay) {
|
|
force_flush = TRUE;
|
|
pad->duration = 0;
|
|
}
|
|
}
|
|
|
|
if (GST_BUFFER_IS_DISCONT (buf)) {
|
|
packet.packetno++;
|
|
/* No public API for this; hack things in */
|
|
pad->stream.pageno++;
|
|
force_flush = TRUE;
|
|
}
|
|
|
|
/* flush the currently built page if necessary */
|
|
if (force_flush) {
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT " forced flush of page before this packet",
|
|
GST_BUFFER_OFFSET_END (pad->buffer));
|
|
while (ogg_stream_flush (&pad->stream, &page)) {
|
|
/* end time of this page is the timestamp of the next buffer */
|
|
ogg_mux->pulling->timestamp_end = GST_BUFFER_TIMESTAMP (pad->buffer);
|
|
ret = gst_ogg_mux_pad_queue_page (ogg_mux, pad, &page,
|
|
pad->first_delta);
|
|
|
|
/* increment the page number counter */
|
|
pad->pageno++;
|
|
/* mark other pages as delta */
|
|
pad->first_delta = TRUE;
|
|
}
|
|
pad->new_page = TRUE;
|
|
}
|
|
|
|
/* if this is the first packet of a new page figure out the delta flag */
|
|
if (pad->new_page) {
|
|
if (delta_unit) {
|
|
/* mark the page as delta */
|
|
pad->first_delta = TRUE;
|
|
} else {
|
|
/* got a keyframe */
|
|
if (ogg_mux->delta_pad == pad) {
|
|
/* if we get it on the pad with deltaunits,
|
|
* we mark the page as non delta */
|
|
pad->first_delta = FALSE;
|
|
} else if (ogg_mux->delta_pad != NULL) {
|
|
/* if there are pads with delta frames, we
|
|
* must mark this one as delta */
|
|
pad->first_delta = TRUE;
|
|
} else {
|
|
pad->first_delta = FALSE;
|
|
}
|
|
}
|
|
pad->new_page = FALSE;
|
|
}
|
|
|
|
/* save key unit to track delta->key unit transitions */
|
|
pad->prev_delta = delta_unit;
|
|
|
|
/* swap the packet in */
|
|
if (packet.e_o_s == 1)
|
|
GST_DEBUG_OBJECT (pad->collect.pad, "swapping in EOS packet");
|
|
if (packet.b_o_s == 1)
|
|
GST_DEBUG_OBJECT (pad->collect.pad, "swapping in BOS packet");
|
|
|
|
ogg_stream_packetin (&pad->stream, &packet);
|
|
|
|
gp_time = GST_BUFFER_OFFSET (pad->buffer);
|
|
granulepos = GST_BUFFER_OFFSET_END (pad->buffer);
|
|
timestamp = GST_BUFFER_TIMESTAMP (pad->buffer);
|
|
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT " packet %" G_GINT64_FORMAT ", gp time %"
|
|
GST_TIME_FORMAT ", timestamp %" GST_TIME_FORMAT " packetin'd",
|
|
granulepos, packet.packetno, GST_TIME_ARGS (gp_time),
|
|
GST_TIME_ARGS (timestamp));
|
|
/* don't need the old buffer anymore */
|
|
gst_buffer_unref (pad->buffer);
|
|
/* store new readahead buffer */
|
|
pad->buffer = tmpbuf;
|
|
|
|
/* let ogg write out the pages now. The packet we got could end
|
|
* up in more than one page so we need to write them all */
|
|
if (ogg_stream_pageout (&pad->stream, &page) > 0) {
|
|
/* we have a new page, so we need to timestamp it correctly.
|
|
* if this fresh packet ends on this page, then the page's granulepos
|
|
* comes from that packet, and we should set this buffer's timestamp */
|
|
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT " packet %" G_GINT64_FORMAT ", time %"
|
|
GST_TIME_FORMAT ") caused new page",
|
|
granulepos, packet.packetno, GST_TIME_ARGS (timestamp));
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT " new page %ld", ogg_page_granulepos (&page),
|
|
pad->stream.pageno);
|
|
|
|
if (ogg_page_granulepos (&page) == granulepos) {
|
|
/* the packet we streamed in finishes on the current page,
|
|
* because the page's granulepos is the granulepos of the last
|
|
* packet completed on that page,
|
|
* so update the timestamp that we will give to the page */
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT
|
|
" packet finishes on current page, updating gp time to %"
|
|
GST_TIME_FORMAT, granulepos, GST_TIME_ARGS (gp_time));
|
|
pad->gp_time = gp_time;
|
|
} else {
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
GST_GP_FORMAT
|
|
" packet spans beyond current page, keeping old gp time %"
|
|
GST_TIME_FORMAT, granulepos, GST_TIME_ARGS (pad->gp_time));
|
|
}
|
|
|
|
/* push the page */
|
|
/* end time of this page is the timestamp of the next buffer */
|
|
pad->timestamp_end = timestamp;
|
|
ret = gst_ogg_mux_pad_queue_page (ogg_mux, pad, &page, pad->first_delta);
|
|
pad->pageno++;
|
|
/* mark next pages as delta */
|
|
pad->first_delta = TRUE;
|
|
|
|
/* use an inner loop here to flush the remaining pages and
|
|
* mark them as delta frames as well */
|
|
while (ogg_stream_pageout (&pad->stream, &page) > 0) {
|
|
if (ogg_page_granulepos (&page) == granulepos) {
|
|
/* the page has taken up the new packet completely, which means
|
|
* the packet ends the page and we can update the gp time
|
|
* before pushing out */
|
|
pad->gp_time = gp_time;
|
|
}
|
|
|
|
/* we have a complete page now, we can push the page
|
|
* and make sure to pull on a new pad the next time around */
|
|
ret = gst_ogg_mux_pad_queue_page (ogg_mux, pad, &page,
|
|
pad->first_delta);
|
|
/* increment the page number counter */
|
|
pad->pageno++;
|
|
}
|
|
/* need a new page as well */
|
|
pad->new_page = TRUE;
|
|
pad->duration = 0;
|
|
/* we're done pulling on this pad, make sure to choose a new
|
|
* pad for pulling in the next iteration */
|
|
ogg_mux->pulling = NULL;
|
|
}
|
|
|
|
/* Update the gp time, if necessary, since any future page will have at
|
|
* least this gp time.
|
|
*/
|
|
if (pad->gp_time < gp_time) {
|
|
pad->gp_time = gp_time;
|
|
GST_LOG_OBJECT (pad->collect.pad,
|
|
"Updated running gp time of pad %" GST_PTR_FORMAT
|
|
" to %" GST_TIME_FORMAT, pad->collect.pad, GST_TIME_ARGS (gp_time));
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
/** all_pads_eos:
|
|
*
|
|
* Checks if all pads are EOS'd by peeking.
|
|
*
|
|
* Returns TRUE if all pads are EOS.
|
|
*/
|
|
static gboolean
|
|
all_pads_eos (GstCollectPads * pads)
|
|
{
|
|
GSList *walk;
|
|
gboolean alleos = TRUE;
|
|
|
|
walk = pads->data;
|
|
while (walk) {
|
|
GstBuffer *buf;
|
|
GstCollectData *data = (GstCollectData *) walk->data;
|
|
|
|
buf = gst_collect_pads_peek (pads, data);
|
|
if (buf) {
|
|
alleos = FALSE;
|
|
gst_buffer_unref (buf);
|
|
goto beach;
|
|
}
|
|
walk = walk->next;
|
|
}
|
|
beach:
|
|
return alleos;
|
|
}
|
|
|
|
/* This function is called when there is data on all pads.
|
|
*
|
|
* It finds a pad to pull on, this is done by looking at the buffers
|
|
* to decide which one to use, and using the 'oldest' one first. It then calls
|
|
* gst_ogg_mux_process_best_pad() to process as much data as possible.
|
|
*
|
|
* If all the pads have received EOS, it flushes out all data by continually
|
|
* getting the best pad and calling gst_ogg_mux_process_best_pad() until they
|
|
* are all empty, and then sends EOS.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_ogg_mux_collected (GstCollectPads * pads, GstOggMux * ogg_mux)
|
|
{
|
|
GstOggPad *best;
|
|
GstFlowReturn ret;
|
|
gint activebefore;
|
|
|
|
GST_LOG_OBJECT (ogg_mux, "collected");
|
|
|
|
activebefore = ogg_mux->active_pads;
|
|
|
|
/* queue buffers on all pads; find a buffer with the lowest timestamp */
|
|
best = gst_ogg_mux_queue_pads (ogg_mux);
|
|
if (best && !best->buffer) {
|
|
GST_DEBUG_OBJECT (ogg_mux, "No buffer available on best pad");
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
if (!best) {
|
|
return GST_FLOW_WRONG_STATE;
|
|
}
|
|
|
|
ret = gst_ogg_mux_process_best_pad (ogg_mux, best);
|
|
|
|
if (ogg_mux->active_pads < activebefore) {
|
|
/* If the active pad count went down, this mean at least one pad has gone
|
|
* EOS. Since CollectPads only calls _collected() once when all pads are
|
|
* EOS, and our code doesn't _pop() from all pads we need to check that by
|
|
* peeking on all pads, else we won't be called again and the muxing will
|
|
* not terminate (push out EOS). */
|
|
|
|
/* if all the pads have been removed, flush all pending data */
|
|
if ((ret == GST_FLOW_OK) && all_pads_eos (pads)) {
|
|
GST_LOG_OBJECT (ogg_mux, "no pads remaining, flushing data");
|
|
|
|
do {
|
|
best = gst_ogg_mux_queue_pads (ogg_mux);
|
|
if (best)
|
|
ret = gst_ogg_mux_process_best_pad (ogg_mux, best);
|
|
} while ((ret == GST_FLOW_OK) && (best != NULL));
|
|
|
|
GST_DEBUG_OBJECT (ogg_mux, "Pushing EOS");
|
|
gst_pad_push_event (ogg_mux->srcpad, gst_event_new_eos ());
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_ogg_mux_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstOggMux *ogg_mux;
|
|
|
|
ogg_mux = GST_OGG_MUX (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_MAX_DELAY:
|
|
g_value_set_uint64 (value, ogg_mux->max_delay);
|
|
break;
|
|
case ARG_MAX_PAGE_DELAY:
|
|
g_value_set_uint64 (value, ogg_mux->max_page_delay);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_ogg_mux_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstOggMux *ogg_mux;
|
|
|
|
ogg_mux = GST_OGG_MUX (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_MAX_DELAY:
|
|
ogg_mux->max_delay = g_value_get_uint64 (value);
|
|
break;
|
|
case ARG_MAX_PAGE_DELAY:
|
|
ogg_mux->max_page_delay = g_value_get_uint64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* reset all variables in the ogg pads. */
|
|
static void
|
|
gst_ogg_mux_init_collectpads (GstCollectPads * collect)
|
|
{
|
|
GSList *walk;
|
|
|
|
walk = collect->data;
|
|
while (walk) {
|
|
GstOggPad *oggpad = (GstOggPad *) walk->data;
|
|
|
|
ogg_stream_init (&oggpad->stream, oggpad->serial);
|
|
oggpad->packetno = 0;
|
|
oggpad->pageno = 0;
|
|
oggpad->eos = FALSE;
|
|
/* we assume there will be some control data first for this pad */
|
|
oggpad->state = GST_OGG_PAD_STATE_CONTROL;
|
|
oggpad->new_page = TRUE;
|
|
oggpad->first_delta = FALSE;
|
|
oggpad->prev_delta = FALSE;
|
|
oggpad->pagebuffers = g_queue_new ();
|
|
|
|
walk = g_slist_next (walk);
|
|
}
|
|
}
|
|
|
|
/* Clear all buffers from the collectpads object */
|
|
static void
|
|
gst_ogg_mux_clear_collectpads (GstCollectPads * collect)
|
|
{
|
|
GSList *walk;
|
|
|
|
for (walk = collect->data; walk; walk = g_slist_next (walk)) {
|
|
GstOggPad *oggpad = (GstOggPad *) walk->data;
|
|
GstBuffer *buf;
|
|
|
|
ogg_stream_clear (&oggpad->stream);
|
|
|
|
while ((buf = g_queue_pop_head (oggpad->pagebuffers)) != NULL) {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
g_queue_free (oggpad->pagebuffers);
|
|
oggpad->pagebuffers = NULL;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_ogg_mux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstOggMux *ogg_mux;
|
|
GstStateChangeReturn ret;
|
|
|
|
ogg_mux = GST_OGG_MUX (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_ogg_mux_clear (ogg_mux);
|
|
gst_ogg_mux_init_collectpads (ogg_mux->collect);
|
|
gst_collect_pads_start (ogg_mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_collect_pads_stop (ogg_mux->collect);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_ogg_mux_clear_collectpads (ogg_mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_ogg_mux_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_ogg_mux_debug, "oggmux", 0, "ogg muxer");
|
|
|
|
return gst_element_register (plugin, "oggmux", GST_RANK_NONE,
|
|
GST_TYPE_OGG_MUX);
|
|
}
|