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Original commit message from CVS: * ext/ogg/gstoggdemux.c: (gst_ogg_pad_push): * ext/ogg/gstoggmux.c: (gst_ogg_mux_next_buffer), (gst_ogg_mux_send_headers), (gst_ogg_mux_loop): Fix the case where the muxer would mark pages as delta frames when they are not (vorbis only ogg).
1593 lines
47 KiB
C
1593 lines
47 KiB
C
/* GStreamer
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* Copyright (C) 2003, 2004 Benjamin Otte <otte@gnome.org>
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*
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* gstoggdemux.c: ogg stream demuxer
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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/bytestream/filepad.h>
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#include <ogg/ogg.h>
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#include <string.h>
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/* tweak this to improve setup times */
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/* PLEASE don't just tweak it because one file is faster with tweaked numbers,
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* but use a good benchmark with both video and audio files */
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/* number of bytes we seek in front of desired point so we can resync properly */
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#define SETUP_EXPECTED_PAGE_SIZE (8500) /* this is out of vorbisfile */
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/* number of bytes where we don't seek to middle anymore but just walk through
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* all packets */
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#define SETUP_PASSTHROUGH_SIZE (SETUP_EXPECTED_PAGE_SIZE * 20)
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/* if we have to repeat a seek backwards because we didn't seek back far enough,
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* we multiply the amount we seek by this amount */
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#define SETUP_SEEK_MULTIPLIER (5)
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GST_DEBUG_CATEGORY_STATIC (gst_ogg_demux_debug);
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GST_DEBUG_CATEGORY_STATIC (gst_ogg_demux_setup_debug);
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#define GST_CAT_DEFAULT gst_ogg_demux_debug
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#define GST_TYPE_OGG_DEMUX (gst_ogg_demux_get_type())
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#define GST_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_DEMUX, GstOggDemux))
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#define GST_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_DEMUX, GstOggDemux))
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#define GST_IS_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_DEMUX))
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#define GST_IS_OGG_DEMUX_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_DEMUX))
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typedef struct _GstOggDemux GstOggDemux;
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typedef struct _GstOggDemuxClass GstOggDemuxClass;
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typedef enum
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{
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/* just because you shouldn't make a valid enum value 0 */
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GST_OGG_STATE_INAVLID,
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/* just started, we need to decide if we should do setup */
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GST_OGG_STATE_START,
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/* setup is analyzing the stream, getting lengths and so on */
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GST_OGG_STATE_SETUP,
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/* after a seek, during resyncing */
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GST_OGG_STATE_SEEK,
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/* normal playback */
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GST_OGG_STATE_PLAY
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}
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GstOggState;
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/* all information needed for one ogg stream */
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typedef struct
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{
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GstPad *pad; /* reference for this pad is held by element we belong to */
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gint serial;
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ogg_stream_state stream;
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guint64 offset; /* end offset of last buffer */
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guint64 known_offset; /* last known offset */
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gint64 packetno; /* number of next expected packet */
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guint64 length; /* length of stream or 0 */
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glong pages; /* number of pages in stream or 0 */
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gint64 start_offset; /* earliest offset in file where this stream has been found */
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gboolean start_found; /* we have found the bos (first) page */
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gint64 end_offset; /* last offset in file where this stream has been found */
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gboolean end_found; /* we have fount the eos (last) page */
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guint flags;
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}
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GstOggPad;
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typedef enum
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{
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GST_OGG_PAD_NEEDS_DISCONT = (1 << 0),
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GST_OGG_PAD_NEEDS_FLUSH = (1 << 1)
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}
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GstOggPadFlags;
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/* all information needed for one ogg chain (relevant for chained bitstreams) */
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typedef struct
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{
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gint64 starts_at; /* starting offset of chain */
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gint64 ends_at; /* end offset of stream (only valid when not last chain or not in setup) */
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GSList *pads; /* list of GstOggPad */
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}
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GstOggChain;
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#define CURRENT_CHAIN(ogg) (&g_array_index ((ogg)->chains, GstOggChain, (ogg)->current_chain))
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#define FOR_PAD_IN_CURRENT_CHAIN(ogg, __pad, ...) \
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FOR_PAD_IN_CHAIN(ogg, __pad, (ogg)->current_chain, __VA_ARGS__)
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#define FOR_PAD_IN_CHAIN(ogg, _pad, i, ...) G_STMT_START{ \
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GSList *_walk; \
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GstOggChain *_chain = &g_array_index ((ogg)->chains, GstOggChain, i); \
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if (i != -1) { \
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for (_walk = _chain->pads; _walk; _walk = g_slist_next (_walk)) { \
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GstOggPad *_pad = (GstOggPad *) _walk->data; \
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__VA_ARGS__ \
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} \
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} \
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}G_STMT_END
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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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GST_OGG_FLAG_WAIT_FOR_DISCONT
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}
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GstOggFlag;
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struct _GstOggDemux
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{
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GstElement element;
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/* pad */
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GstFilePad *sinkpad;
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/* state */
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GstOggState state;
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GArray *chains; /* list of chains we know */
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gint current_chain; /* id of chain that currently "plays" */
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gboolean bos; /* no-more-pads signal needs this */
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/* setup */
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GSList *unordered; /* streams we haven't found chains for yet */
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guint setup_state; /* seperate from global state */
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/* ogg stuff */
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ogg_sync_state sync;
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/* seeking */
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GstOggPad *seek_pad;
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gint64 seek_to;
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gint64 seek_skipped;
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GstFormat seek_format;
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};
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struct _GstOggDemuxClass
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{
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GstElementClass parent_class;
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};
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/* 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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enum
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{
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ARG_0
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/* FILL ME */
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};
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static GstStaticPadTemplate ogg_demux_src_template_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate ogg_demux_sink_template_factory =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/ogg")
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);
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/* different setup phases */
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typedef enum
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{
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SETUP_INVALID,
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SETUP_READ_FIRST_BOS,
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SETUP_READ_BOS,
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SETUP_FIND_LAST_CHAIN,
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SETUP_FIND_END_OF_CHAIN,
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SETUP_FIND_END_OF_STREAMS,
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SETUP_FIND_END_OF_LAST_STREAMS
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}
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GstOggSetupState;
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typedef struct
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{
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gboolean (*init) (GstOggDemux * ogg);
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gboolean (*process) (GstOggDemux * ogg, ogg_page * page);
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}
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SetupStateFunc;
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static gboolean _read_bos_init (GstOggDemux * ogg);
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static gboolean _read_bos_process (GstOggDemux * ogg, ogg_page * page);
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static gboolean _find_chain_init (GstOggDemux * ogg);
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static gboolean _find_chain_process (GstOggDemux * ogg, ogg_page * page);
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static gboolean _find_last_chain_init (GstOggDemux * ogg);
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static gboolean _find_last_chain_process (GstOggDemux * ogg, ogg_page * page);
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static gboolean _find_streams_init (GstOggDemux * ogg);
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static gboolean _find_streams_process (GstOggDemux * ogg, ogg_page * page);
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static SetupStateFunc setup_funcs[] = {
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{NULL, NULL},
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{_read_bos_init, _read_bos_process},
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{_read_bos_init, _read_bos_process},
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{_find_last_chain_init, _find_last_chain_process},
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{_find_chain_init, _find_chain_process},
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{_find_streams_init, _find_streams_process},
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{_find_streams_init, _find_streams_process},
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{NULL, NULL} /* just because */
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};
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static gboolean gst_ogg_demux_set_setup_state (GstOggDemux * ogg,
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GstOggSetupState state);
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static void gst_ogg_demux_finalize (GObject * object);
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static gboolean gst_ogg_demux_src_event (GstPad * pad, GstEvent * event);
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static const GstEventMask *gst_ogg_demux_get_event_masks (GstPad * pad);
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static const GstQueryType *gst_ogg_demux_get_query_types (GstPad * pad);
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static const GstFormat *gst_ogg_demux_get_formats (GstPad * pad);
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static gboolean gst_ogg_demux_src_query (GstPad * pad,
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GstQueryType type, GstFormat * format, gint64 * value);
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static void gst_ogg_demux_iterate (GstFilePad * pad);
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static gboolean gst_ogg_demux_handle_event (GstPad * pad, GstEvent * event);
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static GstElementStateReturn gst_ogg_demux_change_state (GstElement * element);
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static GstOggPad *gst_ogg_pad_new (GstOggDemux * ogg, int serial_no);
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static void gst_ogg_pad_remove (GstOggDemux * ogg, GstOggPad * ogg_pad);
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static void gst_ogg_pad_reset (GstOggDemux * ogg, GstOggPad * pad);
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static void gst_ogg_demux_push (GstOggDemux * ogg, ogg_page * page);
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static void gst_ogg_pad_push (GstOggDemux * ogg, GstOggPad * ogg_pad);
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static void gst_ogg_chains_clear (GstOggDemux * ogg);
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static void gst_ogg_add_chain (GstOggDemux * ogg);
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static GstCaps *gst_ogg_type_find (ogg_packet * packet);
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static void gst_ogg_print (GstOggDemux * demux);
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#define GST_OGG_SET_STATE(ogg, new_state) G_STMT_START{ \
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GST_DEBUG_OBJECT (ogg, "setting state to %s", G_STRINGIFY (new_state)); \
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ogg->state = new_state; \
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ogg->setup_state = (new_state == GST_OGG_STATE_SETUP) ? \
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SETUP_READ_FIRST_BOS : SETUP_INVALID; \
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}G_STMT_END
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GST_BOILERPLATE (GstOggDemux, gst_ogg_demux, GstElement, GST_TYPE_ELEMENT)
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static void gst_ogg_demux_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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static GstElementDetails gst_ogg_demux_details =
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GST_ELEMENT_DETAILS ("ogg demuxer",
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"Codec/Demuxer",
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"demux ogg streams (info about ogg: http://xiph.org)",
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"Benjamin Otte <otte@gnome.org>");
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gst_element_class_set_details (element_class, &gst_ogg_demux_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&ogg_demux_sink_template_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&ogg_demux_src_template_factory));
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}
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static void
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gst_ogg_demux_class_init (GstOggDemuxClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gstelement_class->change_state = gst_ogg_demux_change_state;
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gobject_class->finalize = gst_ogg_demux_finalize;
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}
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static void
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gst_ogg_demux_init (GstOggDemux * ogg)
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{
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GST_FLAG_SET (ogg, GST_ELEMENT_EVENT_AWARE);
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/* create the sink pad */
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ogg->sinkpad =
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GST_FILE_PAD (gst_file_pad_new (gst_static_pad_template_get
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(&ogg_demux_sink_template_factory), "sink"));
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gst_file_pad_set_iterate_function (ogg->sinkpad, gst_ogg_demux_iterate);
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gst_file_pad_set_event_function (ogg->sinkpad, gst_ogg_demux_handle_event);
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gst_pad_set_formats_function (GST_PAD (ogg->sinkpad),
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gst_ogg_demux_get_formats);
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gst_element_add_pad (GST_ELEMENT (ogg), GST_PAD (ogg->sinkpad));
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/* initalize variables */
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GST_OGG_SET_STATE (ogg, GST_OGG_STATE_START);
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ogg->chains = g_array_new (TRUE, TRUE, sizeof (GstOggChain));
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ogg->current_chain = -1;
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}
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static void
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gst_ogg_demux_finalize (GObject * object)
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{
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GstOggDemux *ogg;
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ogg = GST_OGG_DEMUX (object);
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/* chains are removed when going to READY */
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g_assert (ogg->current_chain == -1);
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g_assert (ogg->chains->len == 0);
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g_array_free (ogg->chains, TRUE);
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}
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static const GstFormat *
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gst_ogg_demux_get_formats (GstPad * pad)
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{
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static GstFormat src_formats[] = {
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GST_FORMAT_BYTES,
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GST_FORMAT_DEFAULT, /* granulepos */
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GST_FORMAT_TIME,
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0
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};
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static GstFormat sink_formats[] = {
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GST_FORMAT_BYTES,
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GST_FORMAT_DEFAULT, /* bytes */
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0
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};
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return (GST_PAD_IS_SRC (pad) ? src_formats : sink_formats);
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}
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static const GstEventMask *
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gst_ogg_demux_get_event_masks (GstPad * pad)
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{
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static const GstEventMask gst_ogg_demux_src_event_masks[] = {
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{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH},
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{0,}
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};
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return gst_ogg_demux_src_event_masks;
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}
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static const GstQueryType *
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gst_ogg_demux_get_query_types (GstPad * pad)
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{
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static const GstQueryType gst_ogg_demux_src_query_types[] = {
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GST_QUERY_TOTAL,
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GST_QUERY_POSITION,
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0
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};
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return gst_ogg_demux_src_query_types;
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}
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static GstOggPad *
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gst_ogg_get_pad_by_pad (GstOggDemux * ogg, GstPad * pad)
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{
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GSList *walk;
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GstOggPad *cur;
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if (ogg->current_chain == -1) {
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GST_DEBUG_OBJECT (ogg, "no active chain, returning NULL");
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return NULL;
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}
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for (walk = CURRENT_CHAIN (ogg)->pads; walk; walk = g_slist_next (walk)) {
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cur = (GstOggPad *) walk->data;
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if (cur->pad == pad)
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return cur;
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}
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return NULL;
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}
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/* the query function on the src pad only knows about granulepos
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* values but we can use the peer plugins to convert the granulepos
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* (which is supposed to be the default format) to any other format
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*/
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static gboolean
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gst_ogg_demux_src_query (GstPad * pad, GstQueryType type,
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GstFormat * format, gint64 * value)
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{
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gboolean res = FALSE;
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GstOggDemux *ogg;
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GstOggPad *cur;
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guint64 granulepos = 0;
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ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
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cur = gst_ogg_get_pad_by_pad (ogg, pad);
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if (!cur)
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return FALSE;
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switch (type) {
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case GST_QUERY_TOTAL:{
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if (cur->length != 0) {
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granulepos = cur->length;
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res = TRUE;
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}
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break;
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}
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case GST_QUERY_POSITION:
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if (cur->length != 0) {
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granulepos = cur->known_offset;
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res = TRUE;
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}
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break;
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default:
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break;
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}
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if (res) {
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/* still ok, got a granulepos then */
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switch (*format) {
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case GST_FORMAT_DEFAULT:
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/* fine, result should be granulepos */
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*value = granulepos;
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res = TRUE;
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break;
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default:
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/* something we have to ask our peer */
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if (GST_PAD_PEER (pad)) {
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res = gst_pad_convert (GST_PAD_PEER (pad),
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GST_FORMAT_DEFAULT, granulepos, format, value);
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}
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break;
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}
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}
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return res;
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}
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/* The current seeking implementation is the most simple I could come up with:
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* - when seeking forwards, just discard data until desired position is reached
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* - when seeking backwards, seek to beginning and seek forward from there
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* Anyone is free to improve this algorithm as it is quite stupid and probably
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* really slow.
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*
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* The seeking position can be specified as the granulepos in case a decoder
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* plugin can give us a correct granulepos, or in timestamps.
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* In the case of a time seek, we repeadedly ask the peer element to
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* convert the granulepos in the page to a timestamp. We go back to playing
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|
* when the timestamp is the requested one (or close enough to it).
|
|
*/
|
|
static gboolean
|
|
gst_ogg_demux_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstOggDemux *ogg;
|
|
GstOggPad *cur;
|
|
|
|
ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
|
|
cur = gst_ogg_get_pad_by_pad (ogg, pad);
|
|
|
|
/* FIXME: optimize this so events from inactive chains work?
|
|
* in theory there shouldn't be an exisiting pad for inactive chains */
|
|
if (cur == NULL)
|
|
goto error;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
gint64 offset, position;
|
|
GstFormat format, my_format;
|
|
gboolean res;
|
|
|
|
format = GST_EVENT_SEEK_FORMAT (event);
|
|
offset = GST_EVENT_SEEK_OFFSET (event);
|
|
|
|
my_format = format;
|
|
|
|
/* get position, we'll need it later to decide what direction
|
|
* we need to seek in */
|
|
res = gst_ogg_demux_src_query (pad,
|
|
GST_QUERY_POSITION, &my_format, &position);
|
|
if (!res)
|
|
goto error;
|
|
|
|
switch (GST_EVENT_SEEK_METHOD (event)) {
|
|
case GST_SEEK_METHOD_END:
|
|
{
|
|
gint64 value;
|
|
|
|
/* invalid offset */
|
|
if (offset > 0)
|
|
goto error;
|
|
|
|
/* calculate total length first */
|
|
res = gst_ogg_demux_src_query (pad,
|
|
GST_QUERY_TOTAL, &my_format, &value);
|
|
if (!res)
|
|
goto error;
|
|
|
|
/* requested position is end + offset */
|
|
offset = value + offset;
|
|
break;
|
|
}
|
|
case GST_SEEK_METHOD_CUR:
|
|
{
|
|
/* add current position to offset */
|
|
offset = position + offset;
|
|
break;
|
|
}
|
|
case GST_SEEK_METHOD_SET:
|
|
/* offset and format are fine here */
|
|
break;
|
|
default:
|
|
g_warning ("invalid seek method in seek event");
|
|
goto error;
|
|
}
|
|
|
|
if (offset < position) {
|
|
/* seek backwards, move to beginning of file */
|
|
if (gst_file_pad_seek (ogg->sinkpad, 0, GST_SEEK_METHOD_SET) != 0)
|
|
goto error;
|
|
ogg_sync_clear (&ogg->sync);
|
|
} else {
|
|
/* seek forwards flush and skip */
|
|
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad, if (GST_PAD_IS_USABLE (pad->pad))
|
|
gst_pad_push (pad->pad,
|
|
GST_DATA (gst_event_new (GST_EVENT_FLUSH))););
|
|
}
|
|
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_SEEK);
|
|
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad,
|
|
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;
|
|
);
|
|
GST_DEBUG_OBJECT (ogg,
|
|
"initiating seeking to format %d, offset %" G_GUINT64_FORMAT, format,
|
|
offset);
|
|
|
|
/* store format and position we seek to */
|
|
ogg->seek_pad = cur;
|
|
ogg->seek_to = offset;
|
|
ogg->seek_format = format;
|
|
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
default:
|
|
return gst_pad_event_default (pad, event);
|
|
}
|
|
|
|
g_assert_not_reached ();
|
|
|
|
error:
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_ogg_demux_src_convert (GstPad * pad,
|
|
GstFormat src_format, gint64 src_value,
|
|
GstFormat * dest_format, gint64 * dest_value)
|
|
{
|
|
gboolean res = FALSE;
|
|
GstOggDemux *ogg;
|
|
GstOggPad *cur;
|
|
|
|
ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
|
|
cur = gst_ogg_get_pad_by_pad (ogg, pad);
|
|
|
|
/* fill me, not sure with what... */
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_ogg_start_playing (GstOggDemux * ogg)
|
|
{
|
|
GST_DEBUG_OBJECT (ogg, "done with setup, changing to playback now");
|
|
if (gst_file_pad_seek (ogg->sinkpad, 0, GST_SEEK_METHOD_SET) != 0) {
|
|
GST_ELEMENT_ERROR (ogg, CORE, SEEK, (NULL),
|
|
("cannot seek to start after EOS"));
|
|
}
|
|
ogg_sync_clear (&ogg->sync);
|
|
if (ogg->current_chain >= 0) {
|
|
ogg->current_chain = 0;
|
|
} else {
|
|
gst_ogg_add_chain (ogg);
|
|
}
|
|
GST_FLAG_UNSET (ogg, GST_OGG_FLAG_EOS);
|
|
GST_FLAG_SET (ogg, GST_OGG_FLAG_WAIT_FOR_DISCONT);
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_PLAY);
|
|
gst_ogg_print (ogg);
|
|
}
|
|
|
|
static gboolean
|
|
gst_ogg_demux_handle_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstOggDemux *ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_DISCONTINUOUS:
|
|
GST_DEBUG_OBJECT (ogg, "got a discont event");
|
|
ogg_sync_reset (&ogg->sync);
|
|
gst_event_unref (event);
|
|
GST_FLAG_UNSET (ogg, GST_OGG_FLAG_WAIT_FOR_DISCONT);
|
|
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad,
|
|
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;
|
|
);
|
|
break;
|
|
default:
|
|
gst_pad_event_default (pad, event);
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_ogg_demux_eos (GstOggDemux * ogg)
|
|
{
|
|
guint i;
|
|
GSList *walk;
|
|
GstEvent *event;
|
|
|
|
GST_DEBUG_OBJECT (ogg, "got EOS");
|
|
ogg->current_chain = -1;
|
|
if (ogg->state == GST_OGG_STATE_SETUP) {
|
|
gst_ogg_start_playing (ogg);
|
|
return;
|
|
}
|
|
event = gst_event_new (GST_EVENT_EOS);
|
|
for (i = 0; i < ogg->chains->len; i++) {
|
|
GstOggChain *chain = &g_array_index (ogg->chains, GstOggChain, i);
|
|
|
|
for (walk = chain->pads; walk; walk = g_slist_next (walk)) {
|
|
GstOggPad *pad = (GstOggPad *) walk->data;
|
|
|
|
if (pad->pad && GST_PAD_IS_USABLE (pad->pad)) {
|
|
gst_data_ref (GST_DATA (event));
|
|
gst_pad_push (pad->pad, GST_DATA (event));
|
|
}
|
|
}
|
|
}
|
|
gst_element_set_eos (GST_ELEMENT (ogg));
|
|
gst_event_unref (event);
|
|
}
|
|
|
|
static GstOggPad *
|
|
gst_ogg_pad_get_in_chain (GstOggDemux * ogg, guint chain, int serial)
|
|
{
|
|
FOR_PAD_IN_CHAIN (ogg, pad, chain, if (pad->serial == serial)
|
|
return pad;);
|
|
return NULL;
|
|
}
|
|
|
|
/* get the pad with the given serial in the current stream or NULL if none */
|
|
static GstOggPad *
|
|
gst_ogg_pad_get_in_current_chain (GstOggDemux * ogg, int serial)
|
|
{
|
|
if (ogg->current_chain == -1)
|
|
return NULL;
|
|
g_return_val_if_fail (ogg->current_chain < ogg->chains->len, NULL);
|
|
return gst_ogg_pad_get_in_chain (ogg, ogg->current_chain, serial);
|
|
}
|
|
|
|
/* FIXME: HACK - i dunno if this is supported ogg API */
|
|
static guint
|
|
gst_ogg_page_get_length (ogg_page * page)
|
|
{
|
|
return page->header_len + page->body_len;
|
|
}
|
|
|
|
static gint64
|
|
gst_ogg_demux_position (GstOggDemux * ogg)
|
|
{
|
|
gint64 pos = gst_file_pad_tell (ogg->sinkpad);
|
|
|
|
if (pos < 0)
|
|
return pos;
|
|
|
|
return pos - ogg->sync.fill + ogg->sync.returned;
|
|
}
|
|
|
|
/* END HACK */
|
|
|
|
/* fill in values from this page */
|
|
#include <signal.h>
|
|
static void
|
|
gst_ogg_pad_populate (GstOggDemux * ogg, GstOggPad * pad, ogg_page * page)
|
|
{
|
|
gint64 start, end;
|
|
|
|
if (pad->length < ogg_page_granulepos (page))
|
|
pad->length = ogg_page_granulepos (page);
|
|
if (pad->pages < ogg_page_pageno (page))
|
|
pad->pages = ogg_page_pageno (page);
|
|
end = gst_ogg_demux_position (ogg);
|
|
if (end >= 0) {
|
|
/* we need to know the offsets into the stream for the current page */
|
|
start = end - gst_ogg_page_get_length (page);
|
|
//g_print ("really setting start from %lld to %lld\n", pad->start_offset, start);
|
|
//g_print ("really setting end from %lld to %lld\n", pad->end_offset, end);
|
|
if (start < pad->start_offset || pad->start_offset < 0)
|
|
pad->start_offset = start;
|
|
if (ogg_page_bos (page))
|
|
pad->start_found = TRUE;
|
|
if (end > pad->end_offset)
|
|
pad->end_offset = end;
|
|
if (ogg_page_eos (page))
|
|
pad->end_found = TRUE;
|
|
}
|
|
}
|
|
|
|
/* get the ogg pad with the given serial in the unordered list or create and add it */
|
|
static GstOggPad *
|
|
gst_ogg_pad_get_unordered (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
GSList *walk;
|
|
GstOggPad *pad;
|
|
int serial = ogg_page_serialno (page);
|
|
|
|
for (walk = ogg->unordered; walk; walk = g_slist_next (walk)) {
|
|
pad = (GstOggPad *) walk->data;
|
|
|
|
if (pad->serial == serial)
|
|
goto out;
|
|
}
|
|
pad = gst_ogg_pad_new (ogg, serial);
|
|
ogg->unordered = g_slist_prepend (ogg->unordered, pad);
|
|
|
|
out:
|
|
/* update start and end pointer if applicable */
|
|
gst_ogg_pad_populate (ogg, pad, page);
|
|
|
|
return pad;
|
|
}
|
|
|
|
static GstOggPad *
|
|
gst_ogg_pad_get (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
GstOggPad *pad =
|
|
gst_ogg_pad_get_in_current_chain (ogg, ogg_page_serialno (page));
|
|
if (pad) {
|
|
gst_ogg_pad_populate (ogg, pad, page);
|
|
} else {
|
|
pad = gst_ogg_pad_get_unordered (ogg, page);
|
|
}
|
|
return pad;
|
|
}
|
|
|
|
static void
|
|
gst_ogg_add_chain (GstOggDemux * ogg)
|
|
{
|
|
GST_LOG_OBJECT (ogg, "adding chain %u", ogg->chains->len);
|
|
ogg->current_chain = ogg->chains->len;
|
|
g_array_set_size (ogg->chains, ogg->chains->len + 1);
|
|
}
|
|
|
|
/* abort setup phase and just start playing */
|
|
static void
|
|
abort_setup (GstOggDemux * ogg)
|
|
{
|
|
gst_ogg_print (ogg);
|
|
gst_ogg_chains_clear (ogg);
|
|
gst_ogg_start_playing (ogg);
|
|
}
|
|
|
|
#undef GST_CAT_DEFAULT
|
|
#define GST_CAT_DEFAULT gst_ogg_demux_setup_debug
|
|
static gboolean
|
|
gst_ogg_demux_set_setup_state (GstOggDemux * ogg, GstOggSetupState state)
|
|
{
|
|
g_assert (ogg->state == GST_OGG_STATE_SETUP);
|
|
g_assert (state > 0);
|
|
g_assert (state < G_N_ELEMENTS (setup_funcs));
|
|
g_assert (state != ogg->setup_state);
|
|
|
|
GST_DEBUG_OBJECT (ogg, "setting setup state from %d to %d", ogg->setup_state,
|
|
state);
|
|
ogg->setup_state = state;
|
|
if (!setup_funcs[state].init (ogg)) {
|
|
abort_setup (ogg);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* seeks to the given position if TRUE is returned. Seeks a bit before this
|
|
* offset for syncing. You can call this function multiple times, if sync
|
|
* failed, it will then seek further back. It will never seek further back as
|
|
* min_offset though.
|
|
*/
|
|
static gboolean
|
|
gst_ogg_demux_seek_before (GstOggDemux * ogg, gint64 offset, gint64 min_offset)
|
|
{
|
|
gint64 before;
|
|
GstOggChain *chain;
|
|
gint streams;
|
|
|
|
/* figure out how many streams are in this chain */
|
|
chain = CURRENT_CHAIN (ogg);
|
|
if (chain) {
|
|
streams = g_slist_length (chain->pads);
|
|
} else {
|
|
streams = 1;
|
|
}
|
|
|
|
/* need to multiply the expected page size with the numer of streams we
|
|
* detected to have a good chance of finding all pages */
|
|
before = ogg->seek_skipped ? ogg->seek_skipped * SETUP_SEEK_MULTIPLIER :
|
|
SETUP_EXPECTED_PAGE_SIZE * streams;
|
|
|
|
GST_DEBUG_OBJECT (ogg,
|
|
"seeking to %" G_GINT64_FORMAT " bytes before %" G_GINT64_FORMAT,
|
|
before, offset);
|
|
/* tried to seek to start once, don't try again */
|
|
if (min_offset + ogg->seek_skipped > offset)
|
|
return FALSE;
|
|
if (gst_file_pad_seek (ogg->sinkpad, MAX (min_offset, offset - before),
|
|
GST_SEEK_METHOD_SET) != 0)
|
|
return FALSE;
|
|
ogg_sync_clear (&ogg->sync);
|
|
ogg->seek_skipped = before;
|
|
ogg->seek_to = offset;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_read_bos_init (GstOggDemux * ogg)
|
|
{
|
|
gst_ogg_add_chain (ogg);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_read_bos_process (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
/* here we're reading in the bos pages of the current chain */
|
|
if (ogg_page_bos (page)) {
|
|
GstOggPad *pad;
|
|
|
|
GST_LOG_OBJECT (ogg,
|
|
"SETUP_READ_BOS: bos found with serial %d, adding to current chain",
|
|
ogg_page_serialno (page));
|
|
pad = gst_ogg_pad_get_unordered (ogg, page);
|
|
ogg->unordered = g_slist_remove (ogg->unordered, pad);
|
|
g_assert (CURRENT_CHAIN (ogg));
|
|
CURRENT_CHAIN (ogg)->pads =
|
|
g_slist_prepend (CURRENT_CHAIN (ogg)->pads, pad);
|
|
} else {
|
|
if (CURRENT_CHAIN (ogg)->pads == NULL) {
|
|
GST_ERROR_OBJECT (ogg, "broken ogg stream, chain has no BOS pages");
|
|
return FALSE;
|
|
}
|
|
GST_DEBUG_OBJECT (ogg,
|
|
"SETUP_READ_BOS: no more bos pages, going to find end of stream");
|
|
if (ogg->setup_state == SETUP_READ_FIRST_BOS) {
|
|
return gst_ogg_demux_set_setup_state (ogg, SETUP_FIND_LAST_CHAIN);
|
|
} else if (ogg->unordered) {
|
|
return gst_ogg_demux_set_setup_state (ogg,
|
|
SETUP_FIND_END_OF_LAST_STREAMS);
|
|
} else {
|
|
return gst_ogg_demux_set_setup_state (ogg, SETUP_FIND_END_OF_STREAMS);
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_chain_get_unknown_part (GstOggDemux * ogg, gint64 * start, gint64 * end)
|
|
{
|
|
*start = 0;
|
|
*end = G_MAXINT64;
|
|
|
|
g_assert (ogg->current_chain >= 0);
|
|
FOR_PAD_IN_CURRENT_CHAIN (ogg, pad, *start = MAX (*start, pad->end_offset);
|
|
);
|
|
|
|
if (ogg->setup_state == SETUP_FIND_LAST_CHAIN) {
|
|
*end = gst_file_pad_get_length (ogg->sinkpad);
|
|
if (*end < 0)
|
|
return FALSE;
|
|
} else {
|
|
GSList *walk;
|
|
|
|
g_assert (ogg->unordered != NULL);
|
|
for (walk = ogg->unordered; walk; walk = g_slist_next (walk)) {
|
|
GstOggPad *temp = walk->data;
|
|
|
|
*end = MIN (*end, temp->start_offset);
|
|
}
|
|
}
|
|
GST_DEBUG_OBJECT (ogg, "we're looking for a new chain in the range [%"
|
|
G_GINT64_FORMAT ", %" G_GINT64_FORMAT "]", *start, *end);
|
|
|
|
/* overlapping chains?! */
|
|
if (*end < *start) {
|
|
GST_ERROR_OBJECT (ogg, "chained streams overlap, bailing out");
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_last_chain_init (GstOggDemux * ogg)
|
|
{
|
|
gint64 end = gst_file_pad_get_length (ogg->sinkpad);
|
|
|
|
ogg->seek_skipped = 0;
|
|
if (end < 0)
|
|
return FALSE;
|
|
if (!gst_ogg_demux_seek_before (ogg, end, 0))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_last_chain_process (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
GstOggPad *pad = gst_ogg_pad_get (ogg, page);
|
|
|
|
/* optimization: set eos as found - we're investigating last pages here anyway */
|
|
pad->end_found = TRUE;
|
|
/* set to 0 to indicate we found a page */
|
|
ogg->seek_skipped = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_chain_seek (GstOggDemux * ogg, gint64 start, gint64 end)
|
|
{
|
|
if (end - start < SETUP_PASSTHROUGH_SIZE) {
|
|
GST_LOG_OBJECT (ogg,
|
|
"iterating through remaining window, because it's smaller than %u bytes",
|
|
SETUP_PASSTHROUGH_SIZE);
|
|
if (ogg->seek_to >= start) {
|
|
ogg->seek_skipped = 0;
|
|
if (!gst_ogg_demux_seek_before (ogg, start, start))
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
ogg->seek_skipped = 0;
|
|
if (!gst_ogg_demux_seek_before (ogg, (start + end) / 2, start))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_chain_init (GstOggDemux * ogg)
|
|
{
|
|
gint64 start, end;
|
|
|
|
ogg->seek_skipped = 0;
|
|
ogg->seek_to = -1;
|
|
if (!_find_chain_get_unknown_part (ogg, &start, &end))
|
|
return FALSE;
|
|
if (!_find_chain_seek (ogg, start, end))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_chain_process (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
gint64 start, end;
|
|
|
|
if (!_find_chain_get_unknown_part (ogg, &start, &end))
|
|
return FALSE;
|
|
if (ogg->seek_to <= start && gst_ogg_demux_position (ogg) > end) {
|
|
/* we now should have the first bos page, because
|
|
* - we seeked to a point in the known chain
|
|
* - we're now in a part that belongs to the unordered streams
|
|
*/
|
|
g_assert (g_slist_find (ogg->unordered, gst_ogg_pad_get (ogg, page)));
|
|
if (!ogg_page_bos (page)) {
|
|
/* broken stream */
|
|
return FALSE;
|
|
}
|
|
if (!gst_ogg_demux_set_setup_state (ogg, SETUP_READ_BOS))
|
|
return FALSE;
|
|
return _read_bos_process (ogg, page);
|
|
} else {
|
|
if (!_find_chain_seek (ogg, start, end))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_streams_check (GstOggDemux * ogg)
|
|
{
|
|
gint chain_nr = ogg->setup_state == SETUP_FIND_END_OF_LAST_STREAMS ?
|
|
ogg->chains->len - 1 : ogg->chains->len - 2;
|
|
gint64 endpos;
|
|
|
|
/* figure out positions */
|
|
if (ogg->setup_state == SETUP_FIND_END_OF_LAST_STREAMS) {
|
|
if ((endpos = gst_file_pad_get_length (ogg->sinkpad)) < 0)
|
|
return FALSE;
|
|
} else {
|
|
endpos = G_MAXINT64;
|
|
FOR_PAD_IN_CHAIN (ogg, pad, ogg->chains->len - 1,
|
|
endpos = MIN (endpos, pad->start_offset);
|
|
);
|
|
}
|
|
if (!ogg->seek_skipped || gst_ogg_demux_position (ogg) >= endpos) {
|
|
/* have we found the endposition for all streams yet? */
|
|
FOR_PAD_IN_CHAIN (ogg, pad, chain_nr, if (!pad->end_offset)
|
|
goto go_on;);
|
|
/* get out, we're done */
|
|
ogg->seek_skipped = 0;
|
|
ogg->seek_to = -1;
|
|
if (ogg->unordered) {
|
|
ogg->setup_state = SETUP_FIND_END_OF_CHAIN;
|
|
} else {
|
|
gst_ogg_start_playing (ogg);
|
|
}
|
|
return TRUE;
|
|
go_on:
|
|
if (!gst_ogg_demux_seek_before (ogg, endpos, 0))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_find_streams_init (GstOggDemux * ogg)
|
|
{
|
|
ogg->seek_skipped = 0;
|
|
ogg->seek_to = -1;
|
|
return _find_streams_check (ogg);
|
|
}
|
|
|
|
static gboolean
|
|
_find_streams_process (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
gint chain_nr = ogg->setup_state == SETUP_FIND_END_OF_LAST_STREAMS ?
|
|
ogg->chains->len - 1 : ogg->chains->len - 2;
|
|
|
|
g_assert (ogg->setup_state == SETUP_FIND_END_OF_LAST_STREAMS ||
|
|
ogg->setup_state == SETUP_FIND_END_OF_STREAMS);
|
|
g_assert (chain_nr >= 0);
|
|
/* mark current pad as having an endframe */
|
|
if (ogg->seek_skipped) {
|
|
GstOggPad *pad =
|
|
gst_ogg_pad_get_in_chain (ogg, chain_nr, ogg_page_serialno (page));
|
|
if (pad) {
|
|
pad->end_offset = TRUE;
|
|
g_print ("marking pad %d as having an end\n", pad->serial);
|
|
}
|
|
}
|
|
return _find_streams_check (ogg);
|
|
}
|
|
|
|
#undef GST_CAT_DEFAULT
|
|
#define GST_CAT_DEFAULT gst_ogg_demux_debug
|
|
|
|
static void
|
|
gst_ogg_demux_iterate (GstFilePad * pad)
|
|
{
|
|
GstOggDemux *ogg;
|
|
guint8 *data;
|
|
guint available;
|
|
int pageout_ret = 1;
|
|
gint64 offset_end;
|
|
|
|
ogg = GST_OGG_DEMUX (gst_pad_get_parent (GST_PAD (pad)));
|
|
|
|
available = gst_file_pad_available (ogg->sinkpad);
|
|
if (available == 0) {
|
|
if (gst_file_pad_eof (ogg->sinkpad)) {
|
|
gst_ogg_demux_eos (ogg);
|
|
} else {
|
|
GST_DEBUG_OBJECT (ogg, "no data available, doing nothing");
|
|
}
|
|
}
|
|
GST_LOG_OBJECT (ogg, "queueing next %u bytes of data", available);
|
|
data = (guint8 *) ogg_sync_buffer (&ogg->sync, available);
|
|
if ((available = gst_file_pad_read (ogg->sinkpad, data, available)) < 0) {
|
|
GST_ERROR_OBJECT (ogg, "error %u reading data from pad",
|
|
gst_file_pad_error (ogg->sinkpad));
|
|
return;
|
|
}
|
|
if (ogg_sync_wrote (&ogg->sync, available) != 0) {
|
|
GST_ELEMENT_ERROR (ogg, LIBRARY, TOO_LAZY, (NULL),
|
|
("ogg_sync_wrote failed"));
|
|
return;
|
|
}
|
|
offset_end = gst_file_pad_tell (ogg->sinkpad);
|
|
g_assert (offset_end >= 0); /* FIXME: do sth reasonable if no length available */
|
|
while (pageout_ret != 0) {
|
|
ogg_page page;
|
|
|
|
pageout_ret = ogg_sync_pageout (&ogg->sync, &page);
|
|
switch (pageout_ret) {
|
|
case -1:
|
|
/* FIXME: need some kind of discont here, we don't know any values to send though,
|
|
* we only have the END_OFFSET */
|
|
break;
|
|
case 0:
|
|
if (ogg->state == GST_OGG_STATE_SETUP) {
|
|
if (gst_file_pad_get_length (ogg->sinkpad) <= offset_end) {
|
|
if (ogg->seek_skipped) {
|
|
if (!gst_ogg_demux_seek_before (ogg,
|
|
gst_file_pad_get_length (ogg->sinkpad), 0))
|
|
abort_setup (ogg);
|
|
} else if (ogg->setup_state == SETUP_FIND_LAST_CHAIN) {
|
|
if (ogg->unordered) {
|
|
if (!gst_ogg_demux_seek_before (ogg, offset_end / 2, 0))
|
|
abort_setup (ogg);
|
|
if (!gst_ogg_demux_set_setup_state (ogg,
|
|
SETUP_FIND_END_OF_CHAIN))
|
|
goto out;
|
|
} else {
|
|
if (!gst_ogg_demux_set_setup_state (ogg,
|
|
SETUP_FIND_END_OF_LAST_STREAMS))
|
|
goto out;
|
|
}
|
|
} else {
|
|
abort_setup (ogg);
|
|
}
|
|
goto out;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
GST_LOG_OBJECT (ogg,
|
|
"processing ogg page (serial %d, packet %ld, granule pos %llu, state: %d",
|
|
ogg_page_serialno (&page), ogg_page_pageno (&page),
|
|
ogg_page_granulepos (&page), ogg->state);
|
|
switch (ogg->state) {
|
|
case GST_OGG_STATE_SETUP:
|
|
if (!setup_funcs[ogg->setup_state].process (ogg, &page)) {
|
|
abort_setup (ogg);
|
|
goto out;
|
|
}
|
|
break;
|
|
case GST_OGG_STATE_START:
|
|
if (gst_file_pad_seek (ogg->sinkpad, 0, GST_SEEK_METHOD_END) == 0) {
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_SETUP);
|
|
GST_DEBUG_OBJECT (ogg, "stream can seek, try setup now");
|
|
if (gst_file_pad_seek (ogg->sinkpad, 0, GST_SEEK_METHOD_SET) != 0) {
|
|
GST_ELEMENT_ERROR (ogg, CORE, SEEK, (NULL),
|
|
("stream can seek to end, but not to start. Can't handle that."));
|
|
}
|
|
ogg_sync_clear (&ogg->sync);
|
|
gst_ogg_add_chain (ogg);
|
|
GST_FLAG_SET (ogg, GST_OGG_FLAG_WAIT_FOR_DISCONT);
|
|
goto out;
|
|
}
|
|
gst_ogg_add_chain (ogg);
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_PLAY);
|
|
/* fall through */
|
|
case GST_OGG_STATE_SEEK:
|
|
case GST_OGG_STATE_PLAY:
|
|
gst_ogg_demux_push (ogg, &page);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (ogg,
|
|
"unknown return value %d from ogg_sync_pageout", pageout_ret);
|
|
pageout_ret = 0;
|
|
break;
|
|
}
|
|
}
|
|
out:
|
|
return;
|
|
}
|
|
static GstOggPad *
|
|
gst_ogg_pad_new (GstOggDemux * ogg, int serial)
|
|
{
|
|
GstOggPad *ret = g_new0 (GstOggPad, 1);
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
ret->serial = serial;
|
|
if (ogg_stream_init (&ret->stream, serial) != 0) {
|
|
GST_ERROR_OBJECT (ogg,
|
|
"Could not initialize ogg_stream struct for serial %d.", serial);
|
|
g_free (ret);
|
|
return NULL;
|
|
}
|
|
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, GST_TAG_SERIAL, serial, NULL);
|
|
gst_element_found_tags (GST_ELEMENT (ogg), list);
|
|
GST_LOG_OBJECT (ogg, "created new ogg src %p for stream with serial %d", ret,
|
|
serial);
|
|
ret->start_offset = ret->end_offset = -1;
|
|
ret->start_found = ret->end_found = FALSE;
|
|
|
|
return ret;
|
|
}
|
|
static void
|
|
gst_ogg_pad_remove (GstOggDemux * ogg, GstOggPad * pad)
|
|
{
|
|
if (pad->pad) {
|
|
/* FIXME:
|
|
* we do it in the EOS signal already - EOS handling needs to be better thought out.
|
|
* Correct way would be pushing EOS on eos page, but scheduler doesn't like that
|
|
if (GST_PAD_IS_USEABLE (pad->pad))
|
|
gst_pad_push (pad->pad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
|
|
*/
|
|
gst_element_remove_pad (GST_ELEMENT (ogg), pad->pad);
|
|
}
|
|
if (ogg_stream_clear (&pad->stream) != 0)
|
|
GST_ERROR_OBJECT (ogg,
|
|
"ogg_stream_clear (serial %d) did not return 0, ignoring this error",
|
|
pad->serial);
|
|
GST_LOG_OBJECT (ogg, "free ogg src %p for stream with serial %d", pad,
|
|
pad->serial);
|
|
g_free (pad);
|
|
}
|
|
static void
|
|
gst_ogg_demux_push (GstOggDemux * ogg, ogg_page * page)
|
|
{
|
|
GstOggPad *cur =
|
|
gst_ogg_pad_get_in_current_chain (ogg, ogg_page_serialno (page));
|
|
|
|
/* now we either have a stream (cur) or not */
|
|
if (ogg_page_bos (page)) {
|
|
if (cur) {
|
|
GST_DEBUG_OBJECT (ogg,
|
|
"ogg page declared as BOS while stream %d already existed."
|
|
"Possibly a seek happened.", cur->serial);
|
|
} else if (cur) {
|
|
GST_DEBUG_OBJECT (ogg, "reactivating deactivated stream %d.",
|
|
cur->serial);
|
|
} else {
|
|
/* FIXME: monitor if we are still in creation stage? */
|
|
cur = gst_ogg_pad_new (ogg, ogg_page_serialno (page));
|
|
if (!cur) {
|
|
GST_ELEMENT_ERROR (ogg, LIBRARY, TOO_LAZY, (NULL),
|
|
("Creating ogg_stream struct failed."));
|
|
return;
|
|
}
|
|
if (ogg->current_chain == -1) {
|
|
/* add new one at the end */
|
|
gst_ogg_add_chain (ogg);
|
|
}
|
|
CURRENT_CHAIN (ogg)->pads =
|
|
g_slist_prepend (CURRENT_CHAIN (ogg)->pads, cur);
|
|
}
|
|
ogg->bos = TRUE;
|
|
} else if (ogg->bos) {
|
|
gst_element_no_more_pads (GST_ELEMENT (ogg));
|
|
ogg->bos = FALSE;
|
|
}
|
|
if (cur == NULL) {
|
|
GST_ELEMENT_ERROR (ogg, STREAM, DECODE, (NULL),
|
|
("invalid ogg stream serial no"));
|
|
return;
|
|
}
|
|
if (ogg_stream_pagein (&cur->stream, page) != 0) {
|
|
GST_WARNING_OBJECT (ogg,
|
|
"ogg stream choked on page (serial %d), resetting stream", cur->serial);
|
|
gst_ogg_pad_reset (ogg, cur);
|
|
return;
|
|
}
|
|
switch (ogg->state) {
|
|
case GST_OGG_STATE_SEEK:
|
|
GST_LOG_OBJECT (ogg,
|
|
"in seek - offset now: %" G_GUINT64_FORMAT
|
|
" (pad %d) - desired offset %" G_GUINT64_FORMAT " (pad %d)",
|
|
cur->known_offset, cur->serial, ogg->seek_to, ogg->seek_pad->serial);
|
|
if (cur == ogg->seek_pad) {
|
|
gint64 position;
|
|
|
|
position = ogg_page_granulepos (page);
|
|
|
|
/* see if we reached the destination position when seeking */
|
|
if (ogg->seek_format != GST_FORMAT_DEFAULT) {
|
|
if (GST_PAD_PEER (cur->pad)
|
|
&& !gst_pad_convert (GST_PAD_PEER (cur->pad), GST_FORMAT_DEFAULT,
|
|
position, &ogg->seek_format, &position)) {
|
|
/* let's just stop then */
|
|
position = G_MAXINT64;
|
|
}
|
|
}
|
|
|
|
if (position >= ogg->seek_to) {
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_PLAY);
|
|
GST_DEBUG_OBJECT (ogg,
|
|
"ended seek at offset %" G_GUINT64_FORMAT " (requested %"
|
|
G_GUINT64_FORMAT, cur->known_offset, ogg->seek_to);
|
|
ogg->seek_pad = NULL;
|
|
ogg->seek_to = 0;
|
|
}
|
|
}
|
|
/* fallthrough */
|
|
case GST_OGG_STATE_PLAY:
|
|
cur->known_offset = ogg_page_granulepos (page);
|
|
gst_ogg_pad_push (ogg, cur);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
if (ogg_page_eos (page)) {
|
|
GST_DEBUG_OBJECT (ogg, "got EOS for stream with serial %d, sending EOS now",
|
|
cur->serial);
|
|
#if 0
|
|
/* Removing pads while PLAYING doesn't work with current schedulers */
|
|
/* remove from list, as this will never be called again */
|
|
gst_ogg_pad_remove (ogg, cur);
|
|
/* this is also not possible because sending EOS this way confuses the scheduler */
|
|
gst_pad_push (cur->pad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
|
|
#endif
|
|
}
|
|
}
|
|
static void
|
|
gst_ogg_pad_push (GstOggDemux * ogg, GstOggPad * pad)
|
|
{
|
|
ogg_packet packet;
|
|
int ret;
|
|
GstBuffer *buf;
|
|
|
|
while (TRUE) {
|
|
ret = ogg_stream_packetout (&pad->stream, &packet);
|
|
GST_LOG_OBJECT (ogg, "packetout gave %d", ret);
|
|
switch (ret) {
|
|
case 0:
|
|
return;
|
|
case -1:
|
|
/* out of sync, could call gst_ogg_pad_reset() here but ogg can decode
|
|
* the packet just fine. We should probably send a DISCONT though. */
|
|
break;
|
|
case 1:{
|
|
/* only push data when playing, not during seek or similar */
|
|
if (ogg->state != GST_OGG_STATE_PLAY)
|
|
continue;
|
|
if (!pad->pad) {
|
|
GstCaps *caps = gst_ogg_type_find (&packet);
|
|
gchar *name = g_strdup_printf ("serial_%d", pad->serial);
|
|
|
|
if (caps == NULL) {
|
|
GST_WARNING_OBJECT (ogg,
|
|
"couldn't find caps for stream with serial %d", pad->serial);
|
|
caps = gst_caps_new_simple ("application/octet-stream", NULL);
|
|
}
|
|
pad->pad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&ogg_demux_src_template_factory), name);
|
|
g_free (name);
|
|
gst_pad_set_event_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_src_event));
|
|
gst_pad_set_event_mask_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_get_event_masks));
|
|
gst_pad_set_query_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_src_query));
|
|
gst_pad_set_query_type_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_get_query_types));
|
|
gst_pad_set_formats_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_get_formats));
|
|
gst_pad_set_convert_function (pad->pad,
|
|
GST_DEBUG_FUNCPTR (gst_ogg_demux_src_convert));
|
|
|
|
gst_pad_use_explicit_caps (pad->pad);
|
|
gst_pad_set_explicit_caps (pad->pad, caps);
|
|
gst_pad_set_active (pad->pad, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT (ogg), pad->pad);
|
|
}
|
|
/* check for discont */
|
|
if (packet.packetno != pad->packetno++) {
|
|
pad->flags |= GST_OGG_PAD_NEEDS_DISCONT;
|
|
pad->packetno = packet.packetno + 1;
|
|
}
|
|
/* send discont if needed */
|
|
if ((pad->flags & GST_OGG_PAD_NEEDS_DISCONT)
|
|
&& GST_PAD_IS_USABLE (pad->pad)) {
|
|
GstEvent *event = gst_event_new_discontinuous (FALSE,
|
|
GST_FORMAT_DEFAULT, pad->known_offset, GST_FORMAT_UNDEFINED); /* FIXME: this might be wrong because we can only use the last known offset */
|
|
|
|
gst_pad_push (pad->pad, GST_DATA (event));
|
|
pad->flags &= (~GST_OGG_PAD_NEEDS_DISCONT);
|
|
};
|
|
/* optimization: use a bufferpool containing the ogg packet? */
|
|
buf =
|
|
gst_pad_alloc_buffer (pad->pad, GST_BUFFER_OFFSET_NONE,
|
|
packet.bytes);
|
|
memcpy (buf->data, packet.packet, packet.bytes);
|
|
if (pad->offset != -1)
|
|
GST_BUFFER_OFFSET (buf) = pad->offset;
|
|
if (packet.granulepos != -1)
|
|
GST_BUFFER_OFFSET_END (buf) = packet.granulepos;
|
|
pad->offset = packet.granulepos;
|
|
if (GST_PAD_IS_USABLE (pad->pad))
|
|
gst_pad_push (pad->pad, GST_DATA (buf));
|
|
break;
|
|
}
|
|
default:
|
|
GST_ERROR_OBJECT (ogg,
|
|
"invalid return value %d for ogg_stream_packetout, resetting stream",
|
|
ret);
|
|
gst_ogg_pad_reset (ogg, pad);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
static void
|
|
gst_ogg_pad_reset (GstOggDemux * ogg, GstOggPad * pad)
|
|
{
|
|
ogg_stream_reset (&pad->stream);
|
|
pad->offset = GST_BUFFER_OFFSET_NONE;
|
|
/* FIXME: need a discont here */
|
|
}
|
|
|
|
static void
|
|
gst_ogg_chains_clear (GstOggDemux * ogg)
|
|
{
|
|
gint i;
|
|
GSList *walk;
|
|
|
|
for (i = ogg->chains->len - 1; i >= 0; i--) {
|
|
GstOggChain *cur = &g_array_index (ogg->chains, GstOggChain, i);
|
|
|
|
for (walk = cur->pads; walk; walk = g_slist_next (walk)) {
|
|
gst_ogg_pad_remove (ogg, (GstOggPad *) walk->data);
|
|
}
|
|
g_slist_free (cur->pads);
|
|
g_array_remove_index (ogg->chains, i);
|
|
}
|
|
ogg->current_chain = -1;
|
|
}
|
|
|
|
static GstElementStateReturn
|
|
gst_ogg_demux_change_state (GstElement * element)
|
|
{
|
|
GstOggDemux *ogg;
|
|
|
|
ogg = GST_OGG_DEMUX (element);
|
|
|
|
switch (GST_STATE_TRANSITION (element)) {
|
|
case GST_STATE_NULL_TO_READY:
|
|
ogg_sync_init (&ogg->sync);
|
|
break;
|
|
case GST_STATE_READY_TO_PAUSED:
|
|
ogg_sync_reset (&ogg->sync);
|
|
break;
|
|
case GST_STATE_PAUSED_TO_PLAYING:
|
|
break;
|
|
case GST_STATE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_PAUSED_TO_READY:
|
|
gst_ogg_chains_clear (ogg);
|
|
GST_OGG_SET_STATE (ogg, GST_OGG_STATE_START);
|
|
ogg->seek_pad = NULL;
|
|
ogg->seek_to = 0;
|
|
break;
|
|
case GST_STATE_READY_TO_NULL:
|
|
ogg_sync_clear (&ogg->sync);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return parent_class->change_state (element);
|
|
}
|
|
|
|
/*** typefinding **************************************************************/
|
|
/* ogg supports its own typefinding because the ogg spec defines that the first
|
|
* packet of an ogg stream must identify the stream. Therefore ogg can use a
|
|
* simplified approach at typefinding.
|
|
*/
|
|
typedef struct
|
|
{
|
|
ogg_packet *packet;
|
|
guint best_probability;
|
|
GstCaps *caps;
|
|
}
|
|
OggTypeFind;
|
|
static guint8 *
|
|
ogg_find_peek (gpointer data, gint64 offset, guint size)
|
|
{
|
|
OggTypeFind *find = (OggTypeFind *) data;
|
|
|
|
if (offset + size <= find->packet->bytes) {
|
|
return ((guint8 *) find->packet->packet) + offset;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
static void
|
|
ogg_find_suggest (gpointer data, guint probability, const GstCaps * caps)
|
|
{
|
|
OggTypeFind *find = (OggTypeFind *) data;
|
|
|
|
if (probability > find->best_probability) {
|
|
gst_caps_replace (&find->caps, gst_caps_copy (caps));
|
|
find->best_probability = probability;
|
|
}
|
|
}
|
|
static GstCaps *
|
|
gst_ogg_type_find (ogg_packet * packet)
|
|
{
|
|
GstTypeFind gst_find;
|
|
OggTypeFind find;
|
|
GList *walk, *type_list = NULL;
|
|
|
|
walk = type_list = gst_type_find_factory_get_list ();
|
|
|
|
find.packet = packet;
|
|
find.best_probability = 0;
|
|
find.caps = NULL;
|
|
gst_find.data = &find;
|
|
gst_find.peek = ogg_find_peek;
|
|
gst_find.suggest = ogg_find_suggest;
|
|
|
|
while (walk) {
|
|
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
|
|
|
|
gst_type_find_factory_call_function (factory, &gst_find);
|
|
if (find.best_probability >= GST_TYPE_FIND_MAXIMUM)
|
|
break;
|
|
walk = g_list_next (walk);
|
|
}
|
|
|
|
if (find.best_probability > 0)
|
|
return find.caps;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gboolean
|
|
gst_ogg_demux_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_ogg_demux_debug, "oggdemux", 0, "ogg demuxer");
|
|
GST_DEBUG_CATEGORY_INIT (gst_ogg_demux_setup_debug, "oggdemux_setup", 0,
|
|
"ogg demuxer setup stage when parsing pipeline");
|
|
|
|
return gst_element_register (plugin, "oggdemux", GST_RANK_PRIMARY,
|
|
GST_TYPE_OGG_DEMUX);
|
|
}
|
|
|
|
/* prints all info about the element */
|
|
#undef GST_CAT_DEFAULT
|
|
#define GST_CAT_DEFAULT gst_ogg_demux_setup_debug
|
|
|
|
#ifdef GST_DISABLE_GST_DEBUG
|
|
|
|
static void
|
|
gst_ogg_print (GstOggDemux * ogg)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
#else /* !GST_DISABLE_GST_DEBUG */
|
|
|
|
#define gst_ogg_print_pad(ogg, _pad) \
|
|
G_STMT_START{\
|
|
GstOggPad *pad = (_pad); \
|
|
GST_INFO_OBJECT (ogg, " stream %d:", pad->serial); \
|
|
GST_INFO_OBJECT (ogg, " length %" G_GUINT64_FORMAT, pad->length); \
|
|
GST_INFO_OBJECT (ogg, " pages %ld", pad->pages); \
|
|
GST_INFO_OBJECT (ogg, " offset: %"G_GINT64_FORMAT"%s - %"G_GINT64_FORMAT"%s", \
|
|
pad->start_offset, pad->start_found ? "" : " (?)", \
|
|
pad->end_offset, pad->end_found ? "" : " (?)"); \
|
|
}G_STMT_END
|
|
static void
|
|
gst_ogg_print (GstOggDemux * ogg)
|
|
{
|
|
guint i;
|
|
GSList *walk;
|
|
|
|
for (i = 0; i < ogg->chains->len; i++) {
|
|
GstOggChain *chain = &g_array_index (ogg->chains, GstOggChain, i);
|
|
|
|
GST_INFO_OBJECT (ogg, "chain %d (%u streams):", i,
|
|
g_slist_length (chain->pads));
|
|
for (walk = chain->pads; walk; walk = g_slist_next (walk)) {
|
|
gst_ogg_print_pad (ogg, walk->data);
|
|
}
|
|
}
|
|
if (ogg->unordered) {
|
|
GST_INFO_OBJECT (ogg, "unordered (%u streams):", i,
|
|
g_slist_length (ogg->unordered));
|
|
for (walk = ogg->unordered; walk; walk = g_slist_next (walk)) {
|
|
gst_ogg_print_pad (ogg, walk->data);
|
|
}
|
|
}
|
|
|
|
}
|
|
#endif /* GST_DISABLE_GST_DEBUG */
|