diff --git a/ChangeLog b/ChangeLog index bbd77ee751..bd7103360a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2007-10-06 Tim-Philipp Müller + + * gst/apetag/Makefile.am: + * gst/apetag/gstapedemux.c: + * gst/apetag/gstapedemux.h: + * gst/apetag/gsttagdemux.c: + * gst/apetag/gsttagdemux.h: + Port APE tag demuxer over to the new GstTagDemux in -base. + 2007-10-05 Wim Taymans * gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_flush), diff --git a/gst/apetag/Makefile.am b/gst/apetag/Makefile.am index ba4a182f5e..fa92d9717a 100644 --- a/gst/apetag/Makefile.am +++ b/gst/apetag/Makefile.am @@ -1,13 +1,15 @@ plugin_LTLIBRARIES = libgstapetag.la -libgstapetag_la_SOURCES = gstapedemux.c gsttagdemux.c +libgstapetag_la_SOURCES = gstapedemux.c libgstapetag_la_CFLAGS = \ -I$(top_srcdir)/gst-libs \ + $(GST_PLUGINS_BASE_CFLAGS) \ $(GST_BASE_CFLAGS) \ $(GST_CFLAGS) libgstapetag_la_LIBADD = \ + $(GST_PLUGINS_BASE_LIBS) -lgsttag-@GST_MAJORMINOR@ \ $(GST_BASE_LIBS) \ $(GST_LIBS) libgstapetag_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -noinst_HEADERS = gstapedemux.h gsttagdemux.h +noinst_HEADERS = gstapedemux.h diff --git a/gst/apetag/gstapedemux.c b/gst/apetag/gstapedemux.c index eaabd7a014..7adc2ccdc2 100644 --- a/gst/apetag/gstapedemux.c +++ b/gst/apetag/gstapedemux.c @@ -109,17 +109,19 @@ gst_ape_demux_class_init (GstApeDemuxClass * klass) tagdemux_class->identify_tag = GST_DEBUG_FUNCPTR (gst_ape_demux_identify_tag); tagdemux_class->parse_tag = GST_DEBUG_FUNCPTR (gst_ape_demux_parse_tag); + + /* no need for a merge function, the default behaviour to prefer start + * tags (APEv2) over end tags (usually APEv1, but could theoretically also + * be APEv2) is fine */ + + tagdemux_class->min_start_size = 32; + tagdemux_class->min_end_size = 32; } static void gst_ape_demux_init (GstApeDemux * apedemux, GstApeDemuxClass * gclass) { - GstTagDemux *tagdemux = GST_TAG_DEMUX (apedemux); - - tagdemux->min_start_size = 32; - tagdemux->min_end_size = 32; - - tagdemux->prefer_start_tag = TRUE; + /* nothing to do here */ } static const struct _GstApeDemuxTagTableEntry diff --git a/gst/apetag/gstapedemux.h b/gst/apetag/gstapedemux.h index a6702b4fc8..3378e5b47a 100644 --- a/gst/apetag/gstapedemux.h +++ b/gst/apetag/gstapedemux.h @@ -21,7 +21,7 @@ #ifndef __GST_APE_DEMUX_H__ #define __GST_APE_DEMUX_H__ -#include "gsttagdemux.h" +#include G_BEGIN_DECLS @@ -49,3 +49,4 @@ GType gst_ape_demux_get_type (void); G_END_DECLS #endif /* __GST_APE_DEMUX_H__ */ + diff --git a/gst/apetag/gsttagdemux.c b/gst/apetag/gsttagdemux.c deleted file mode 100644 index 8587159bad..0000000000 --- a/gst/apetag/gsttagdemux.c +++ /dev/null @@ -1,1471 +0,0 @@ -/* GStreamer Base Class for Tag Demuxing - * Copyright (C) 2005 Jan Schmidt - * Copyright (C) 2006 Tim-Philipp Müller - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -/** - * SECTION:gsttagdemux - * @see_also: GstApeDemux - * @short_description: Base class for demuxing tags that are in chunks - * directly at the beginning or at the end of a file - * - * - * - * Provides a base class for demuxing tags at the beginning or end of a - * stream and handles things like typefinding, querying, seeking, and - * different modes of operation (chain-based, pull_range-based, and providing - * downstream elements with random access if upstream supports that). The tag - * is stripped from the output, and all offsets are adjusted for the tag - * sizes, so that to the downstream element the stream will appear as if - * there was no tag at all. Also, once the tag has been parsed, GstTagDemux - * will try to determine the media type of the resulting stream and add a - * source pad with the appropriate caps in order to facilitate auto-plugging. - * - * Deriving from GstTagDemux - * - * Subclasses have to do four things: - * - * - * In their base init function, they must add a pad template for the sink - * pad to the element class, describing the media type they can parse in - * the caps of the pad template. - * - * - * In their class init function, they must override - * GST_TAG_DEMUX_CLASS(demux_klass)->identify_tag with their own identify - * function. - * - * - * In their class init function, they must override - * GST_TAG_DEMUX_CLASS(demux_klass)->parse_tag with their own parse - * function. - * - * - * In their instance init function, they must set - * GST_TAG_DEMUX(demux)->min_start_size and/or - * GST_TAG_DEMUX(demux)->min_end_size to the minimum size required for the - * identify function to decide whether the stream has a supported tag or - * not. A class parsing ID3v1 tags, for example, would set min_end_size to - * 128 bytes. - * - * - * - * - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "gsttagdemux.h" - -#include -#include -#include - -typedef enum -{ - GST_TAG_DEMUX_READ_START_TAG, - GST_TAG_DEMUX_TYPEFINDING, - GST_TAG_DEMUX_STREAMING -} GstTagDemuxState; - -struct _GstTagDemuxPrivate -{ - GstPad *srcpad; - GstPad *sinkpad; - - /* Number of bytes to remove from the - * start of file (tag at beginning) */ - guint strip_start; - - /* Number of bytes to remove from the - * end of file (tag at end) */ - guint strip_end; - - gint64 upstream_size; - - GstTagDemuxState state; - GstBuffer *collect; - GstCaps *src_caps; - - GstTagList *event_tags; - GstTagList *parsed_tags; - gboolean send_tag_event; - - GstSegment segment; - gboolean need_newseg; - gboolean newseg_update; -}; - -/* Require at least 8kB of data before we attempt typefind. - * Seems a decent value based on test files - * 40kB is massive overkill for the maximum, I think, but it - * doesn't do any harm (tpm: increased to 64kB after watching - * typefinding fail on a wavpack file that needed 42kB to succeed) */ -#define TYPE_FIND_MIN_SIZE 8192 -#define TYPE_FIND_MAX_SIZE 65536 - -GST_DEBUG_CATEGORY_STATIC (tagdemux_debug); -#define GST_CAT_DEFAULT (tagdemux_debug) - -static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_SOMETIMES, - GST_STATIC_CAPS ("ANY") - ); - -static void gst_tag_demux_dispose (GObject * object); - -static GstFlowReturn gst_tag_demux_chain (GstPad * pad, GstBuffer * buf); -static gboolean gst_tag_demux_sink_event (GstPad * pad, GstEvent * event); - -static gboolean gst_tag_demux_src_activate_pull (GstPad * pad, gboolean active); -static GstFlowReturn gst_tag_demux_read_range (GstTagDemux * tagdemux, - guint64 offset, guint length, GstBuffer ** buffer); - -static gboolean gst_tag_demux_src_checkgetrange (GstPad * srcpad); -static GstFlowReturn gst_tag_demux_src_getrange (GstPad * srcpad, - guint64 offset, guint length, GstBuffer ** buffer); - -static gboolean gst_tag_demux_add_srcpad (GstTagDemux * tagdemux, - GstCaps * new_caps); -static gboolean gst_tag_demux_remove_srcpad (GstTagDemux * tagdemux); - -static gboolean gst_tag_demux_srcpad_event (GstPad * pad, GstEvent * event); -static gboolean gst_tag_demux_sink_activate (GstPad * sinkpad); -static GstStateChangeReturn gst_tag_demux_change_state (GstElement * element, - GstStateChange transition); -static gboolean gst_tag_demux_pad_query (GstPad * pad, GstQuery * query); -static const GstQueryType *gst_tag_demux_get_query_types (GstPad * pad); -static gboolean gst_tag_demux_get_upstream_size (GstTagDemux * tagdemux); -static void gst_tag_demux_send_tag_event (GstTagDemux * tagdemux); -static gboolean gst_tag_demux_send_new_segment (GstTagDemux * tagdemux); - -static void gst_tag_demux_base_init (gpointer g_class); -static void gst_tag_demux_class_init (gpointer g_class, gpointer d); -static void gst_tag_demux_init (GstTagDemux * obj, GstTagDemuxClass * klass); - -static gpointer parent_class; /* NULL */ - -/* Cannot use boilerplate macros here because we want the abstract flag */ -GType -gst_tag_demux_get_type (void) -{ - static GType object_type; /* 0 */ - - if (object_type == 0) { - static const GTypeInfo object_info = { - sizeof (GstTagDemuxClass), - gst_tag_demux_base_init, - NULL, /* base_finalize */ - gst_tag_demux_class_init, - NULL, /* class_finalize */ - NULL, /* class_data */ - sizeof (GstTagDemux), - 0, /* n_preallocs */ - (GInstanceInitFunc) gst_tag_demux_init - }; - - object_type = g_type_register_static (GST_TYPE_ELEMENT, - "GstApeDemuxBase", &object_info, G_TYPE_FLAG_ABSTRACT); - } - - return object_type; -} - -static void -gst_tag_demux_base_init (gpointer klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&src_factory)); - - GST_DEBUG_CATEGORY_INIT (tagdemux_debug, "tagdemux", 0, - "GStreamer tag demux base class"); -} - -static void -gst_tag_demux_class_init (gpointer klass, gpointer d) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - GObjectClass *gobject_class = G_OBJECT_CLASS (klass); - - parent_class = g_type_class_peek_parent (klass); - - gobject_class->dispose = gst_tag_demux_dispose; - - element_class->change_state = GST_DEBUG_FUNCPTR (gst_tag_demux_change_state); - - g_type_class_add_private (klass, sizeof (GstTagDemuxPrivate)); -} - -static void -gst_tag_demux_reset (GstTagDemux * tagdemux) -{ - GstBuffer **buffer_p = &tagdemux->priv->collect; - GstCaps **caps_p = &tagdemux->priv->src_caps; - - tagdemux->priv->strip_start = 0; - tagdemux->priv->strip_end = 0; - tagdemux->priv->upstream_size = -1; - tagdemux->priv->state = GST_TAG_DEMUX_READ_START_TAG; - tagdemux->priv->send_tag_event = FALSE; - - gst_buffer_replace (buffer_p, NULL); - gst_caps_replace (caps_p, NULL); - - gst_tag_demux_remove_srcpad (tagdemux); - - if (tagdemux->priv->event_tags) { - gst_tag_list_free (tagdemux->priv->event_tags); - tagdemux->priv->event_tags = NULL; - } - if (tagdemux->priv->parsed_tags) { - gst_tag_list_free (tagdemux->priv->parsed_tags); - tagdemux->priv->parsed_tags = NULL; - } - - gst_segment_init (&tagdemux->priv->segment, GST_FORMAT_UNDEFINED); - tagdemux->priv->need_newseg = TRUE; - tagdemux->priv->newseg_update = FALSE; -} - -static void -gst_tag_demux_init (GstTagDemux * demux, GstTagDemuxClass * gclass) -{ - GstElementClass *element_klass = GST_ELEMENT_CLASS (gclass); - GstPadTemplate *tmpl; - - demux->priv = g_type_instance_get_private ((GTypeInstance *) demux, - GST_TYPE_TAG_DEMUX); - - /* subclasses must set these to sane values */ - demux->min_start_size = 0; - demux->min_end_size = 0; - - /* subclasses may set these, we just set defaults */ - demux->prefer_start_tag = TRUE; - - tmpl = gst_element_class_get_pad_template (element_klass, "sink"); - if (tmpl) { - demux->priv->sinkpad = gst_pad_new_from_template (tmpl, "sink"); - - gst_pad_set_activate_function (demux->priv->sinkpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_sink_activate)); - gst_pad_set_event_function (demux->priv->sinkpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_sink_event)); - gst_pad_set_chain_function (demux->priv->sinkpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_chain)); - gst_element_add_pad (GST_ELEMENT (demux), demux->priv->sinkpad); - } - - gst_tag_demux_reset (demux); -} - -static void -gst_tag_demux_dispose (GObject * object) -{ - GstTagDemux *tagdemux = GST_TAG_DEMUX (object); - - gst_tag_demux_reset (tagdemux); - - G_OBJECT_CLASS (parent_class)->dispose (object); -} - -static gboolean -gst_tag_demux_add_srcpad (GstTagDemux * tagdemux, GstCaps * new_caps) -{ - GstPad *srcpad = NULL; - - if (tagdemux->priv->src_caps == NULL || - !gst_caps_is_equal (new_caps, tagdemux->priv->src_caps)) { - - gst_caps_replace (&(tagdemux->priv->src_caps), new_caps); - if (tagdemux->priv->srcpad != NULL) { - GST_DEBUG_OBJECT (tagdemux, "Changing src pad caps to %" GST_PTR_FORMAT, - tagdemux->priv->src_caps); - - gst_pad_set_caps (tagdemux->priv->srcpad, tagdemux->priv->src_caps); - } - } else { - /* Caps never changed */ - gst_caps_unref (new_caps); - } - - if (tagdemux->priv->srcpad == NULL) { - srcpad = tagdemux->priv->srcpad = - gst_pad_new_from_template (gst_element_class_get_pad_template - (GST_ELEMENT_GET_CLASS (tagdemux), "src"), "src"); - g_return_val_if_fail (tagdemux->priv->srcpad != NULL, FALSE); - - gst_pad_set_query_type_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_get_query_types)); - gst_pad_set_query_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_pad_query)); - gst_pad_set_event_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_srcpad_event)); - gst_pad_set_activatepull_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_src_activate_pull)); - gst_pad_set_checkgetrange_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_src_checkgetrange)); - gst_pad_set_getrange_function (tagdemux->priv->srcpad, - GST_DEBUG_FUNCPTR (gst_tag_demux_src_getrange)); - - gst_pad_use_fixed_caps (tagdemux->priv->srcpad); - - if (tagdemux->priv->src_caps) - gst_pad_set_caps (tagdemux->priv->srcpad, tagdemux->priv->src_caps); - - GST_DEBUG_OBJECT (tagdemux, "Adding src pad with caps %" GST_PTR_FORMAT, - tagdemux->priv->src_caps); - - gst_object_ref (tagdemux->priv->srcpad); - gst_pad_set_active (tagdemux->priv->srcpad, TRUE); - if (!(gst_element_add_pad (GST_ELEMENT (tagdemux), tagdemux->priv->srcpad))) - return FALSE; - gst_element_no_more_pads (GST_ELEMENT (tagdemux)); - } - - return TRUE; -} - -static gboolean -gst_tag_demux_remove_srcpad (GstTagDemux * demux) -{ - gboolean res = TRUE; - - if (demux->priv->srcpad != NULL) { - GST_DEBUG_OBJECT (demux, "Removing src pad"); - res = gst_element_remove_pad (GST_ELEMENT (demux), demux->priv->srcpad); - g_return_val_if_fail (res != FALSE, FALSE); - gst_object_unref (demux->priv->srcpad); - demux->priv->srcpad = NULL; - } - - return res; -}; - -/* will return FALSE if buffer is beyond end of data; will return TRUE - * if buffer was trimmed successfully or didn't need trimming, but may - * also return TRUE and set *buf_ref to NULL if the buffer was before - * the start of the data */ -static gboolean -gst_tag_demux_trim_buffer (GstTagDemux * tagdemux, GstBuffer ** buf_ref) -{ - GstBuffer *buf = *buf_ref; - - guint trim_start = 0; - guint out_size = GST_BUFFER_SIZE (buf); - guint64 out_offset = GST_BUFFER_OFFSET (buf); - gboolean need_sub = FALSE; - - /* Adjust offset and length */ - if (!GST_BUFFER_OFFSET_IS_VALID (buf)) { - /* Can't change anything without an offset */ - return TRUE; - } - - /* If the buffer crosses the tag at the end of file, trim it */ - if (tagdemux->priv->strip_end > 0) { - if (gst_tag_demux_get_upstream_size (tagdemux)) { - guint64 v1tag_offset = - tagdemux->priv->upstream_size - tagdemux->priv->strip_end; - - if (out_offset >= v1tag_offset) { - GST_DEBUG_OBJECT (tagdemux, "Buffer is past the end of the data"); - goto no_out_buffer_end; - } - - if (out_offset + out_size > v1tag_offset) { - out_size = v1tag_offset - out_offset; - need_sub = TRUE; - } - } - } - - if (tagdemux->priv->strip_start > 0) { - /* If the buffer crosses the tag at the start of file, trim it */ - if (out_offset <= tagdemux->priv->strip_start) { - if (out_offset + out_size <= tagdemux->priv->strip_start) { - GST_DEBUG_OBJECT (tagdemux, "Buffer is before the start of the data"); - goto no_out_buffer_start; - } - - trim_start = tagdemux->priv->strip_start - out_offset; - out_size -= trim_start; - out_offset = 0; - } else { - out_offset -= tagdemux->priv->strip_start; - } - need_sub = TRUE; - } - - g_assert (out_size > 0); - - if (need_sub == TRUE) { - if (out_size != GST_BUFFER_SIZE (buf) || !gst_buffer_is_writable (buf)) { - GstBuffer *sub; - - GST_DEBUG_OBJECT (tagdemux, "Sub-buffering to trim size %d offset %" - G_GINT64_FORMAT " to %d offset %" G_GINT64_FORMAT, - GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf), out_size, out_offset); - - sub = gst_buffer_create_sub (buf, trim_start, out_size); - g_return_val_if_fail (sub != NULL, FALSE); - gst_buffer_unref (buf); - *buf_ref = buf = sub; - } else { - GST_DEBUG_OBJECT (tagdemux, "Adjusting buffer from size %d offset %" - G_GINT64_FORMAT " to %d offset %" G_GINT64_FORMAT, - GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf), out_size, out_offset); - } - - GST_BUFFER_OFFSET (buf) = out_offset; - GST_BUFFER_OFFSET_END (buf) = out_offset + out_size; - gst_buffer_set_caps (buf, tagdemux->priv->src_caps); - } - - return TRUE; - -no_out_buffer_end: - { - gst_buffer_unref (buf); - *buf_ref = NULL; - return FALSE; - } -no_out_buffer_start: - { - gst_buffer_unref (buf); - *buf_ref = NULL; - return TRUE; - } -} - -static void -gst_tag_demux_chain_parse_tag (GstTagDemux * demux, GstBuffer * collect) -{ - GstTagDemuxResult parse_ret; - GstTagDemuxClass *klass; - guint tagsize = 0; - guint available; - - g_assert (gst_buffer_is_metadata_writable (collect)); - - klass = GST_TAG_DEMUX_CLASS (G_OBJECT_GET_CLASS (demux)); - - /* If we receive a buffer that's from the middle of the file, - * we can't read tags so move to typefinding */ - if (GST_BUFFER_OFFSET_IS_VALID (collect) && GST_BUFFER_OFFSET (collect) != 0) { - GST_DEBUG_OBJECT (demux, "Received buffer from non-zero offset %" - G_GINT64_FORMAT ". Can't read tags", GST_BUFFER_OFFSET (collect)); - demux->priv->state = GST_TAG_DEMUX_TYPEFINDING; - return; - } - - g_assert (klass->identify_tag != NULL); - g_assert (klass->parse_tag != NULL); - - available = GST_BUFFER_SIZE (collect); - - if (available < demux->min_start_size) { - GST_DEBUG_OBJECT (demux, "Only %u bytes available, but %u needed " - "to identify tag", available, demux->min_start_size); - return; /* wait for more data */ - } - - if (!klass->identify_tag (demux, collect, TRUE, &tagsize)) { - GST_DEBUG_OBJECT (demux, "Could not identify start tag"); - demux->priv->state = GST_TAG_DEMUX_TYPEFINDING; - return; - } - - /* need to set offset of first buffer to 0 or trimming won't work */ - if (!GST_BUFFER_OFFSET_IS_VALID (collect)) { - GST_WARNING_OBJECT (demux, "Fixing up first buffer without offset"); - GST_BUFFER_OFFSET (collect) = 0; - } - - GST_DEBUG_OBJECT (demux, "Identified tag, size = %u bytes", tagsize); - - do { - GstTagList *tags = NULL; - guint newsize, saved_size; - - demux->priv->strip_start = tagsize; - - if (available < tagsize) { - GST_DEBUG_OBJECT (demux, "Only %u bytes available, but %u needed " - "to parse tag", available, tagsize); - return; /* wait for more data */ - } - - saved_size = GST_BUFFER_SIZE (collect); - GST_BUFFER_SIZE (collect) = tagsize; - newsize = tagsize; - - parse_ret = klass->parse_tag (demux, collect, TRUE, &newsize, &tags); - - GST_BUFFER_SIZE (collect) = saved_size; - - switch (parse_ret) { - case GST_TAG_DEMUX_RESULT_OK: - demux->priv->strip_start = newsize; - demux->priv->parsed_tags = tags; - GST_DEBUG_OBJECT (demux, "Read start tag of size %u", newsize); - break; - case GST_TAG_DEMUX_RESULT_BROKEN_TAG: - demux->priv->strip_start = newsize; - demux->priv->parsed_tags = tags; - GST_WARNING_OBJECT (demux, "Ignoring broken start tag of size %d", - demux->priv->strip_start); - break; - case GST_TAG_DEMUX_RESULT_AGAIN: - GST_DEBUG_OBJECT (demux, "Re-parse, this time with %u bytes", newsize); - g_assert (newsize != tagsize); - tagsize = newsize; - break; - } - } while (parse_ret == GST_TAG_DEMUX_RESULT_AGAIN); - - GST_LOG_OBJECT (demux, "Parsed tag. Proceeding to typefinding"); - demux->priv->state = GST_TAG_DEMUX_TYPEFINDING; - demux->priv->send_tag_event = TRUE; -} - -static GstFlowReturn -gst_tag_demux_chain (GstPad * pad, GstBuffer * buf) -{ - GstTagDemux *demux; - - demux = GST_TAG_DEMUX (GST_PAD_PARENT (pad)); - g_return_val_if_fail (GST_IS_TAG_DEMUX (demux), GST_FLOW_ERROR); - - /* Update our segment last_stop info */ - if (demux->priv->segment.format == GST_FORMAT_BYTES) { - if (GST_BUFFER_OFFSET_IS_VALID (buf)) - demux->priv->segment.last_stop = GST_BUFFER_OFFSET (buf); - demux->priv->segment.last_stop += GST_BUFFER_SIZE (buf); - } else if (demux->priv->segment.format == GST_FORMAT_TIME) { - if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) - demux->priv->segment.last_stop = GST_BUFFER_TIMESTAMP (buf); - if (GST_BUFFER_DURATION_IS_VALID (buf)) - demux->priv->segment.last_stop += GST_BUFFER_DURATION (buf); - } - - if (demux->priv->collect == NULL) { - demux->priv->collect = buf; - } else { - demux->priv->collect = gst_buffer_join (demux->priv->collect, buf); - } - buf = NULL; - - switch (demux->priv->state) { - case GST_TAG_DEMUX_READ_START_TAG: - demux->priv->collect = - gst_buffer_make_metadata_writable (demux->priv->collect); - gst_tag_demux_chain_parse_tag (demux, demux->priv->collect); - if (demux->priv->state != GST_TAG_DEMUX_TYPEFINDING) - break; - /* Fall-through */ - case GST_TAG_DEMUX_TYPEFINDING:{ - GstTypeFindProbability probability = 0; - GstBuffer *typefind_buf = NULL; - GstCaps *caps; - - if (GST_BUFFER_SIZE (demux->priv->collect) < - TYPE_FIND_MIN_SIZE + demux->priv->strip_start) - break; /* Go get more data first */ - - GST_DEBUG_OBJECT (demux, "Typefinding with size %d", - GST_BUFFER_SIZE (demux->priv->collect)); - - /* Trim the buffer and adjust offset for typefinding */ - typefind_buf = demux->priv->collect; - gst_buffer_ref (typefind_buf); - if (!gst_tag_demux_trim_buffer (demux, &typefind_buf)) - return GST_FLOW_UNEXPECTED; - - if (typefind_buf == NULL) - break; /* Still need more data */ - - caps = gst_type_find_helper_for_buffer (GST_OBJECT (demux), - typefind_buf, &probability); - - if (caps == NULL) { - if (GST_BUFFER_SIZE (typefind_buf) < TYPE_FIND_MAX_SIZE) { - /* Just break for more data */ - gst_buffer_unref (typefind_buf); - return GST_FLOW_OK; - } - - /* We failed typefind */ - GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND, (NULL), (NULL)); - gst_buffer_unref (typefind_buf); - gst_buffer_unref (demux->priv->collect); - demux->priv->collect = NULL; - return GST_FLOW_ERROR; - } - gst_buffer_unref (typefind_buf); - - GST_DEBUG_OBJECT (demux, "Found type %" GST_PTR_FORMAT " with a " - "probability of %u", caps, probability); - - if (!gst_tag_demux_add_srcpad (demux, caps)) { - GST_DEBUG_OBJECT (demux, "Failed to add srcpad"); - gst_caps_unref (caps); - goto error; - } - gst_caps_unref (caps); - - /* Move onto streaming and fall-through to push out existing - * data */ - demux->priv->state = GST_TAG_DEMUX_STREAMING; - /* fall-through */ - } - case GST_TAG_DEMUX_STREAMING:{ - GstBuffer *outbuf = NULL; - - if (demux->priv->send_tag_event) { - gst_tag_demux_send_tag_event (demux); - demux->priv->send_tag_event = FALSE; - } - - /* Trim the buffer and adjust offset */ - if (demux->priv->collect) { - outbuf = demux->priv->collect; - demux->priv->collect = NULL; - if (!gst_tag_demux_trim_buffer (demux, &outbuf)) - return GST_FLOW_UNEXPECTED; - } - if (outbuf) { - if (G_UNLIKELY (demux->priv->srcpad == NULL)) { - gst_buffer_unref (outbuf); - return GST_FLOW_ERROR; - } - - GST_DEBUG_OBJECT (demux, "Pushing buffer %p", outbuf); - /* gst_util_dump_mem (GST_BUFFER_DATA (outbuf), - GST_BUFFER_SIZE (outbuf)); */ - - /* Ensure the caps are set correctly */ - outbuf = gst_buffer_make_metadata_writable (outbuf); - gst_buffer_set_caps (outbuf, GST_PAD_CAPS (demux->priv->srcpad)); - - /* Might need a new segment before the buffer */ - if (demux->priv->need_newseg) { - if (!gst_tag_demux_send_new_segment (demux)) { - GST_DEBUG_OBJECT (demux, "Failed to send new segment event"); - goto error; - } - demux->priv->need_newseg = FALSE; - } - - return gst_pad_push (demux->priv->srcpad, outbuf); - } - } - } - return GST_FLOW_OK; - -error: - GST_DEBUG_OBJECT (demux, "error in chain function"); - - return GST_FLOW_ERROR; -} - -static gboolean -gst_tag_demux_sink_event (GstPad * pad, GstEvent * event) -{ - GstTagDemux *demux; - gboolean ret; - - demux = GST_TAG_DEMUX (gst_pad_get_parent (pad)); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_EOS: - if (demux->priv->srcpad == NULL) { - GST_WARNING_OBJECT (demux, "EOS before we found a type"); - GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND, (NULL), (NULL)); - } - ret = gst_pad_event_default (pad, event); - break; - case GST_EVENT_NEWSEGMENT:{ - gboolean update; - gdouble rate, arate; - GstFormat format; - gint64 start, stop, position; - - gst_event_parse_new_segment_full (event, &update, &rate, &arate, - &format, &start, &stop, &position); - - gst_segment_set_newsegment_full (&demux->priv->segment, update, rate, - arate, format, start, stop, position); - demux->priv->newseg_update = update; - demux->priv->need_newseg = TRUE; - ret = TRUE; - break; - } - default: - ret = gst_pad_event_default (pad, event); - break; - } - - gst_object_unref (demux); - return ret; -} - -static gboolean -gst_tag_demux_get_upstream_size (GstTagDemux * tagdemux) -{ - GstFormat format; - gint64 len; - - /* Short-cut if we already queried upstream */ - if (tagdemux->priv->upstream_size > 0) - return TRUE; - - format = GST_FORMAT_BYTES; - if (!gst_pad_query_peer_duration (tagdemux->priv->sinkpad, &format, &len) || - len <= 0) { - return FALSE; - } - - tagdemux->priv->upstream_size = len; - return TRUE; -} - -static gboolean -gst_tag_demux_srcpad_event (GstPad * pad, GstEvent * event) -{ - gboolean res = FALSE; - GstTagDemux *tagdemux = GST_TAG_DEMUX (GST_PAD_PARENT (pad)); - - /* Handle SEEK events, with adjusted byte offsets and sizes. */ - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_SEEK: - { - gdouble rate; - GstFormat format; - GstSeekType cur_type, stop_type; - GstSeekFlags flags; - gint64 cur, stop; - - gst_event_parse_seek (event, &rate, &format, &flags, - &cur_type, &cur, &stop_type, &stop); - - if (format == GST_FORMAT_BYTES && - tagdemux->priv->state == GST_TAG_DEMUX_STREAMING && - gst_pad_is_linked (tagdemux->priv->sinkpad)) { - GstEvent *upstream; - - switch (cur_type) { - case GST_SEEK_TYPE_SET: - if (cur == -1) - cur = 0; - cur += tagdemux->priv->strip_start; - break; - case GST_SEEK_TYPE_CUR: - break; - case GST_SEEK_TYPE_END: - /* Adjust the seek to be relative to the start of any end tag - * (note: 10 bytes before end is represented by stop=-10) */ - if (cur > 0) - cur = 0; - cur -= tagdemux->priv->strip_end; - break; - default: - g_assert_not_reached (); - break; - } - switch (stop_type) { - case GST_SEEK_TYPE_SET: - if (stop != -1) { - /* -1 means the end of the file, pass it upstream intact */ - stop += tagdemux->priv->strip_start; - } - break; - case GST_SEEK_TYPE_CUR: - break; - case GST_SEEK_TYPE_END: - /* Adjust the seek to be relative to the start of any end tag - * (note: 10 bytes before end is represented by stop=-10) */ - if (stop > 0) - stop = 0; - stop -= tagdemux->priv->strip_end; - break; - default: - break; - } - upstream = gst_event_new_seek (rate, format, flags, - cur_type, cur, stop_type, stop); - res = gst_pad_push_event (tagdemux->priv->sinkpad, upstream); - } - break; - } - default: - break; - } - - gst_event_unref (event); - return res; -} - -/* takes ownership of new_tags */ - -static void -gst_tag_demux_merge_tags (GstTagList ** tags, GstTagList * new_tags) -{ - g_return_if_fail (tags != NULL); - - if (new_tags == NULL) - return; - - GST_LOG ("New tags: %" GST_PTR_FORMAT, new_tags); - - if (*tags != NULL) { - GstTagList *merged; - - merged = gst_tag_list_merge (*tags, new_tags, GST_TAG_MERGE_REPLACE); - gst_tag_list_free (*tags); - gst_tag_list_free (new_tags); - *tags = merged; - } else { - *tags = new_tags; - } - - GST_LOG ("Tags now: %" GST_PTR_FORMAT, *tags); -} - -/* Read and interpret any end tag when activating in pull_range. - * Returns FALSE if pad activation should fail. */ -static gboolean -gst_tag_demux_pull_end_tag (GstTagDemux * demux, GstTagList ** tags) -{ - GstTagDemuxResult parse_ret; - GstTagDemuxClass *klass; - GstFlowReturn flow_ret; - GstTagList *new_tags = NULL; - GstBuffer *buffer = NULL; - gboolean have_tag; - gboolean res = FALSE; - guint64 offset; - guint tagsize; - - klass = GST_TAG_DEMUX_CLASS (G_OBJECT_GET_CLASS (demux)); - - g_assert (klass->identify_tag != NULL); - g_assert (klass->parse_tag != NULL); - - if (demux->min_end_size == 0) { - GST_DEBUG_OBJECT (demux, "Not looking for tag at the end"); - return TRUE; - } - - if (demux->priv->upstream_size < demux->min_end_size) { - GST_DEBUG_OBJECT (demux, "File too small"); - return TRUE; - } - - /* Pull enough to identify the tag and retrieve its total size */ - offset = demux->priv->upstream_size - demux->min_end_size; - - flow_ret = gst_pad_pull_range (demux->priv->sinkpad, offset, - demux->min_end_size, &buffer); - - if (flow_ret != GST_FLOW_OK) { - GST_DEBUG_OBJECT (demux, "Could not read tag header from end of file, " - "ret = %s", gst_flow_get_name (flow_ret)); - goto done; - } - - if (GST_BUFFER_SIZE (buffer) < demux->min_end_size) { - GST_DEBUG_OBJECT (demux, "Only managed to read %u bytes from file " - "(required: %u bytes)", GST_BUFFER_SIZE (buffer), demux->min_end_size); - goto done; - } - - have_tag = klass->identify_tag (demux, buffer, FALSE, &tagsize); - - if (!have_tag) { - GST_DEBUG_OBJECT (demux, "Could not find tag at end"); - goto done; - } - - /* Now pull the entire tag */ - do { - guint newsize, saved_size; - - GST_DEBUG_OBJECT (demux, "Identified tag at end, size=%u bytes", tagsize); - - demux->priv->strip_end = tagsize; - - g_assert (tagsize >= demux->min_end_size); - - /* Get buffer that's exactly the requested size */ - if (GST_BUFFER_SIZE (buffer) != tagsize) { - gst_buffer_unref (buffer); - buffer = NULL; - - offset = demux->priv->upstream_size - tagsize; - - flow_ret = gst_pad_pull_range (demux->priv->sinkpad, offset, - tagsize, &buffer); - - if (flow_ret != GST_FLOW_OK) { - GST_DEBUG_OBJECT (demux, "Could not read data from end of file at " - "offset %" G_GUINT64_FORMAT ". ret = %s", offset, - gst_flow_get_name (flow_ret)); - goto done; - } - - if (GST_BUFFER_SIZE (buffer) < tagsize) { - GST_DEBUG_OBJECT (demux, "Only managed to read %u bytes from file", - GST_BUFFER_SIZE (buffer)); - goto done; - } - } - - GST_BUFFER_OFFSET (buffer) = offset; - - saved_size = GST_BUFFER_SIZE (buffer); - GST_BUFFER_SIZE (buffer) = tagsize; - newsize = tagsize; - - parse_ret = klass->parse_tag (demux, buffer, FALSE, &newsize, &new_tags); - - GST_BUFFER_SIZE (buffer) = saved_size; - - switch (parse_ret) { - case GST_TAG_DEMUX_RESULT_OK: - res = TRUE; - demux->priv->strip_end = newsize; - GST_DEBUG_OBJECT (demux, "Read tag at end, size %d", - demux->priv->strip_end); - break; - case GST_TAG_DEMUX_RESULT_BROKEN_TAG: - res = TRUE; - demux->priv->strip_end = newsize; - GST_WARNING_OBJECT (demux, "Ignoring broken tag at end, size %d", - demux->priv->strip_end); - break; - case GST_TAG_DEMUX_RESULT_AGAIN: - GST_DEBUG_OBJECT (demux, "Re-parse, this time with %d bytes", newsize); - g_assert (newsize != tagsize); - tagsize = newsize; - break; - } - } while (parse_ret == GST_TAG_DEMUX_RESULT_AGAIN); - - gst_tag_demux_merge_tags (tags, new_tags); - new_tags = NULL; - -done: - if (new_tags) - gst_tag_list_free (new_tags); - if (buffer) - gst_buffer_unref (buffer); - return res; -} - -/* Read and interpret any tag at the start when activating in - * pull_range. Returns FALSE if pad activation should fail. */ -static gboolean -gst_tag_demux_pull_start_tag (GstTagDemux * demux, GstTagList ** tags) -{ - GstTagDemuxResult parse_ret; - GstTagDemuxClass *klass; - GstFlowReturn flow_ret; - GstTagList *new_tags = NULL; - GstBuffer *buffer = NULL; - gboolean have_tag; - gboolean res = FALSE; - guint req, tagsize; - - klass = GST_TAG_DEMUX_CLASS (G_OBJECT_GET_CLASS (demux)); - - g_assert (klass->identify_tag != NULL); - g_assert (klass->parse_tag != NULL); - - if (demux->min_start_size == 0) { - GST_DEBUG_OBJECT (demux, "Not looking for tag at the beginning"); - return TRUE; - } - - /* Handle tag at start. Try with 4kB to start with */ - req = MAX (demux->min_start_size, 4096); - - /* Pull enough to identify the tag and retrieve its total size */ - flow_ret = gst_pad_pull_range (demux->priv->sinkpad, 0, req, &buffer); - if (flow_ret != GST_FLOW_OK) { - GST_DEBUG_OBJECT (demux, "Could not read data from start of file ret=%s", - gst_flow_get_name (flow_ret)); - goto done; - } - - if (GST_BUFFER_SIZE (buffer) < demux->min_start_size) { - GST_DEBUG_OBJECT (demux, "Only managed to read %u bytes from file - " - "no tag in this file", GST_BUFFER_SIZE (buffer)); - goto done; - } - - have_tag = klass->identify_tag (demux, buffer, TRUE, &tagsize); - - if (!have_tag) { - GST_DEBUG_OBJECT (demux, "Could not find start tag"); - res = TRUE; - goto done; - } - - GST_DEBUG_OBJECT (demux, "Identified start tag, size = %u bytes", tagsize); - - do { - guint newsize, saved_size; - - demux->priv->strip_start = tagsize; - - /* Now pull the entire tag */ - g_assert (tagsize >= demux->min_start_size); - - if (GST_BUFFER_SIZE (buffer) < tagsize) { - gst_buffer_unref (buffer); - buffer = NULL; - - flow_ret = gst_pad_pull_range (demux->priv->sinkpad, 0, tagsize, &buffer); - if (flow_ret != GST_FLOW_OK) { - GST_DEBUG_OBJECT (demux, "Could not read data from start of file, " - "ret = %s", gst_flow_get_name (flow_ret)); - goto done; - } - - if (GST_BUFFER_SIZE (buffer) < tagsize) { - GST_DEBUG_OBJECT (demux, "Only managed to read %u bytes from file", - GST_BUFFER_SIZE (buffer)); - goto done; - } - } - - saved_size = GST_BUFFER_SIZE (buffer); - GST_BUFFER_SIZE (buffer) = tagsize; - newsize = tagsize; - parse_ret = klass->parse_tag (demux, buffer, TRUE, &newsize, &new_tags); - - GST_BUFFER_SIZE (buffer) = saved_size; - - switch (parse_ret) { - case GST_TAG_DEMUX_RESULT_OK: - res = TRUE; - demux->priv->strip_start = newsize; - GST_DEBUG_OBJECT (demux, "Read start tag of size %d", newsize); - break; - case GST_TAG_DEMUX_RESULT_BROKEN_TAG: - res = TRUE; - demux->priv->strip_start = newsize; - GST_WARNING_OBJECT (demux, "Ignoring broken start tag of size %d", - demux->priv->strip_start); - break; - case GST_TAG_DEMUX_RESULT_AGAIN: - GST_DEBUG_OBJECT (demux, "Re-parse, this time with %d bytes", newsize); - g_assert (newsize != tagsize); - tagsize = newsize; - break; - } - } while (parse_ret == GST_TAG_DEMUX_RESULT_AGAIN); - - gst_tag_demux_merge_tags (tags, new_tags); - new_tags = NULL; - -done: - if (new_tags) - gst_tag_list_free (new_tags); - if (buffer) - gst_buffer_unref (buffer); - return res; -} - -/* This function operates similarly to gst_type_find_element_activate - * in the typefind element - * 1. try to activate in pull mode. if not, switch to push and succeed. - * 2. try to read tags in pull mode - * 3. typefind the contents - * 4. deactivate pull mode. - * 5. if we didn't find any caps, fail. - * 6. Add the srcpad - * 7. if the sink pad is activated, we are in pull mode. succeed. - * otherwise activate both pads in push mode and succeed. - */ -static gboolean -gst_tag_demux_sink_activate (GstPad * sinkpad) -{ - GstTypeFindProbability probability = 0; - GstTagDemux *demux = GST_TAG_DEMUX (GST_PAD_PARENT (sinkpad)); - gboolean ret = FALSE; - GstCaps *caps = NULL; - - /* 1: */ - /* If we can activate pull_range upstream, then read any end and start - * tags, otherwise activate in push mode and the chain function will - * collect buffers, read the start tag and output a buffer to end - * preroll. - */ - if (!gst_pad_check_pull_range (sinkpad) || - !gst_pad_activate_pull (sinkpad, TRUE)) { - GST_DEBUG_OBJECT (demux, "No pull mode. Changing to push, but won't be " - "able to read end tags"); - demux->priv->state = GST_TAG_DEMUX_READ_START_TAG; - return gst_pad_activate_push (sinkpad, TRUE); - } - - /* Look for tags at start and end of file */ - GST_DEBUG_OBJECT (demux, "Activated pull mode. Looking for tags"); - if (!gst_tag_demux_get_upstream_size (demux)) - return FALSE; - - demux->priv->strip_start = 0; - demux->priv->strip_end = 0; - - /* we merge in REPLACE mode, so read the less important tag first */ - if (demux->prefer_start_tag) { - if (!gst_tag_demux_pull_end_tag (demux, &demux->priv->parsed_tags) && - !gst_tag_demux_pull_start_tag (demux, &demux->priv->parsed_tags)) { - return FALSE; - } - } else { - if (!gst_tag_demux_pull_start_tag (demux, &demux->priv->parsed_tags) && - !gst_tag_demux_pull_end_tag (demux, &demux->priv->parsed_tags)) { - return FALSE; - } - } - - if (demux->priv->parsed_tags != NULL) { - demux->priv->send_tag_event = TRUE; - } - - /* 3 - Do typefinding on data */ - caps = gst_type_find_helper_get_range (GST_OBJECT (demux), - (GstTypeFindHelperGetRangeFunction) gst_tag_demux_read_range, - demux->priv->upstream_size - - (demux->priv->strip_start + demux->priv->strip_end), &probability); - - GST_DEBUG_OBJECT (demux, "Found type %" GST_PTR_FORMAT " with a " - "probability of %u", caps, probability); - - /* 4 - Deactivate pull mode */ - if (!gst_pad_activate_pull (sinkpad, FALSE)) { - if (caps) - gst_caps_unref (caps); - GST_DEBUG_OBJECT (demux, "Could not deactivate sinkpad after reading tags"); - return FALSE; - } - - /* 5 - If we didn't find the caps, fail */ - if (caps == NULL) { - GST_DEBUG_OBJECT (demux, "Could not detect type of contents"); - GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND, (NULL), (NULL)); - goto done_activate; - } - - /* tag reading and typefinding were already done, don't do them again in - * the chain function if we end up in push mode */ - demux->priv->state = GST_TAG_DEMUX_STREAMING; - - /* 6 Add the srcpad for output now we know caps. */ - /* add_srcpad takes ownership of the caps */ - if (!gst_tag_demux_add_srcpad (demux, caps)) { - GST_DEBUG_OBJECT (demux, "Could not add source pad"); - goto done_activate; - } - - /* 7 - if the sinkpad is active, it was done by downstream so we're - * done, otherwise switch to push */ - ret = TRUE; - if (!gst_pad_is_active (sinkpad)) { - ret = gst_pad_activate_push (demux->priv->srcpad, TRUE); - ret &= gst_pad_activate_push (sinkpad, TRUE); - } - -done_activate: - - return ret; -} - -static gboolean -gst_tag_demux_src_activate_pull (GstPad * pad, gboolean active) -{ - GstTagDemux *demux = GST_TAG_DEMUX (GST_PAD_PARENT (pad)); - - return gst_pad_activate_pull (demux->priv->sinkpad, active); -} - -static gboolean -gst_tag_demux_src_checkgetrange (GstPad * srcpad) -{ - GstTagDemux *demux = GST_TAG_DEMUX (GST_PAD_PARENT (srcpad)); - - return gst_pad_check_pull_range (demux->priv->sinkpad); -} - -static GstFlowReturn -gst_tag_demux_read_range (GstTagDemux * demux, - guint64 offset, guint length, GstBuffer ** buffer) -{ - GstFlowReturn ret; - guint64 in_offset; - guint in_length; - - g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR); - - /* Adjust offset and length of the request to trim off tag information. - * For the returned buffer, adjust the output offset to match what downstream - * should see */ - in_offset = offset + demux->priv->strip_start; - - if (!gst_tag_demux_get_upstream_size (demux)) - return GST_FLOW_ERROR; - - if (in_offset + length >= demux->priv->upstream_size - demux->priv->strip_end) { - if (in_offset + demux->priv->strip_end >= demux->priv->upstream_size) - return GST_FLOW_UNEXPECTED; - in_length = demux->priv->upstream_size - demux->priv->strip_end - in_offset; - } else { - in_length = length; - } - - ret = gst_pad_pull_range (demux->priv->sinkpad, in_offset, in_length, buffer); - - if (ret == GST_FLOW_OK && *buffer) { - if (!gst_tag_demux_trim_buffer (demux, buffer)) - goto read_beyond_end; - - /* this should only happen in streaming mode */ - g_assert (*buffer != NULL); - - gst_buffer_set_caps (*buffer, demux->priv->src_caps); - } - - return ret; - -read_beyond_end: - { - GST_DEBUG_OBJECT (demux, "attempted read beyond end of file"); - if (*buffer != NULL) { - gst_buffer_unref (buffer); - *buffer = NULL; - } - return GST_FLOW_UNEXPECTED; - } -} - -static GstFlowReturn -gst_tag_demux_src_getrange (GstPad * srcpad, - guint64 offset, guint length, GstBuffer ** buffer) -{ - GstTagDemux *demux = GST_TAG_DEMUX (GST_PAD_PARENT (srcpad)); - GstFlowReturn flow_ret; - - if (demux->priv->send_tag_event) { - gst_tag_demux_send_tag_event (demux); - demux->priv->send_tag_event = FALSE; - } - flow_ret = gst_tag_demux_read_range (demux, offset, length, buffer); -/* - if (flow_ret == GST_FLOW_OK) { - gst_util_dump_mem (GST_BUFFER_DATA (*buffer), GST_BUFFER_SIZE (*buffer)); - } -*/ - return flow_ret; -} - -static GstStateChangeReturn -gst_tag_demux_change_state (GstElement * element, GstStateChange transition) -{ - GstStateChangeReturn ret; - GstTagDemux *demux = GST_TAG_DEMUX (element); - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - gst_tag_demux_reset (demux); - break; - default: - break; - } - return ret; -} - -static gboolean -gst_tag_demux_pad_query (GstPad * pad, GstQuery * query) -{ - /* For a position or duration query, adjust the returned - * bytes to strip off the end and start areas */ - - GstTagDemux *demux = GST_TAG_DEMUX (GST_PAD_PARENT (pad)); - GstPad *peer = NULL; - GstFormat format; - gint64 result; - - if ((peer = gst_pad_get_peer (demux->priv->sinkpad)) == NULL) - return FALSE; - - if (!gst_pad_query (peer, query)) { - gst_object_unref (peer); - return FALSE; - } - - gst_object_unref (peer); - - switch (GST_QUERY_TYPE (query)) { - case GST_QUERY_POSITION: - { - gst_query_parse_position (query, &format, &result); - if (format == GST_FORMAT_BYTES) { - result -= demux->priv->strip_start; - gst_query_set_position (query, format, result); - } - break; - } - case GST_QUERY_DURATION: - { - gst_query_parse_duration (query, &format, &result); - if (format == GST_FORMAT_BYTES) { - result -= demux->priv->strip_start + demux->priv->strip_end; - gst_query_set_duration (query, format, result); - } - break; - } - default: - break; - } - - return TRUE; -} - -static const GstQueryType * -gst_tag_demux_get_query_types (GstPad * pad) -{ - static const GstQueryType types[] = { - GST_QUERY_POSITION, - GST_QUERY_DURATION, - 0 - }; - - return types; -} - -static void -gst_tag_demux_send_tag_event (GstTagDemux * demux) -{ - /* FIXME: what's the correct merge mode? Docs need to tell... */ - GstTagList *merged = gst_tag_list_merge (demux->priv->event_tags, - demux->priv->parsed_tags, GST_TAG_MERGE_KEEP); - - if (demux->priv->parsed_tags) - gst_element_post_message (GST_ELEMENT (demux), - gst_message_new_tag (GST_OBJECT (demux), - gst_tag_list_copy (demux->priv->parsed_tags))); - - if (merged) { - GstEvent *event = gst_event_new_tag (merged); - - GST_EVENT_TIMESTAMP (event) = 0; - GST_DEBUG_OBJECT (demux, "Sending tag event on src pad"); - gst_pad_push_event (demux->priv->srcpad, event); - } -} - -static gboolean -gst_tag_demux_send_new_segment (GstTagDemux * tagdemux) -{ - GstEvent *event; - gint64 start, stop, position; - GstSegment *seg = &tagdemux->priv->segment; - - if (seg->format == GST_FORMAT_UNDEFINED) { - GST_LOG_OBJECT (tagdemux, - "No new segment received before first buffer. Using default"); - gst_segment_set_newsegment (seg, FALSE, 1.0, - GST_FORMAT_BYTES, tagdemux->priv->strip_start, -1, - tagdemux->priv->strip_start); - } - - /* Can't adjust segments in non-BYTES formats */ - if (tagdemux->priv->segment.format != GST_FORMAT_BYTES) { - event = gst_event_new_new_segment_full (tagdemux->priv->newseg_update, - seg->rate, seg->applied_rate, seg->format, seg->start, - seg->stop, seg->time); - return gst_pad_push_event (tagdemux->priv->srcpad, event); - } - - start = seg->start; - stop = seg->stop; - position = seg->time; - - g_return_val_if_fail (start != -1, FALSE); - g_return_val_if_fail (position != -1, FALSE); - - if (tagdemux->priv->strip_end > 0) { - if (gst_tag_demux_get_upstream_size (tagdemux)) { - guint64 v1tag_offset = - tagdemux->priv->upstream_size - tagdemux->priv->strip_end; - - if (start >= v1tag_offset) { - /* Segment is completely within the ID3v1 tag, output an open-ended - * segment, even though all the buffers will get trimmed away */ - start = v1tag_offset; - stop = -1; - } - - if (stop != -1 && stop >= v1tag_offset) { - GST_DEBUG_OBJECT (tagdemux, - "Segment crosses the ID3v1 tag. Trimming end"); - stop = v1tag_offset; - } - } - } - - if (tagdemux->priv->strip_start > 0) { - if (start > tagdemux->priv->strip_start) - start -= tagdemux->priv->strip_start; - else - start = 0; - - if (position > tagdemux->priv->strip_start) - position -= tagdemux->priv->strip_start; - else - position = 0; - - if (stop != -1) { - if (stop > tagdemux->priv->strip_start) - stop -= tagdemux->priv->strip_start; - else - stop = 0; - } - } - - GST_DEBUG_OBJECT (tagdemux, - "Sending new segment update %d, rate %g, format %d, " - "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT ", position %" - G_GINT64_FORMAT, tagdemux->priv->newseg_update, seg->rate, seg->format, - start, stop, position); - - event = gst_event_new_new_segment_full (tagdemux->priv->newseg_update, - seg->rate, seg->applied_rate, seg->format, start, stop, position); - return gst_pad_push_event (tagdemux->priv->srcpad, event); -} diff --git a/gst/apetag/gsttagdemux.h b/gst/apetag/gsttagdemux.h deleted file mode 100644 index 631bafe8f1..0000000000 --- a/gst/apetag/gsttagdemux.h +++ /dev/null @@ -1,105 +0,0 @@ -/* GStreamer Base Class for Tag Demuxing - * Copyright (C) 2005 Jan Schmidt - * Copyright (C) 2006 Tim-Philipp Müller - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifndef __GST_TAG_DEMUX_H__ -#define __GST_TAG_DEMUX_H__ - -#include - -G_BEGIN_DECLS - -#define GST_TYPE_TAG_DEMUX (gst_tag_demux_get_type()) -#define GST_TAG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TAG_DEMUX,GstTagDemux)) -#define GST_TAG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TAG_DEMUX,GstTagDemuxClass)) -#define GST_IS_TAG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TAG_DEMUX)) -#define GST_IS_TAG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAG_DEMUX)) - -typedef struct _GstTagDemux GstTagDemux; -typedef struct _GstTagDemuxClass GstTagDemuxClass; -typedef struct _GstTagDemuxPrivate GstTagDemuxPrivate; - -/** - * GstTagDemuxResult: - * @GST_TAG_DEMUX_RESULT_BROKEN_TAG: cannot parse tag, just skip it - * @GST_TAG_DEMUX_RESULT_AGAIN : call again with less or more data - * @GST_TAG_DEMUX_RESULT_OK : parsed tag successfully - * - * Result values from the parse_tag virtual function. - */ -typedef enum { - GST_TAG_DEMUX_RESULT_BROKEN_TAG, - GST_TAG_DEMUX_RESULT_AGAIN, - GST_TAG_DEMUX_RESULT_OK -} GstTagDemuxResult; - -struct _GstTagDemux -{ - GstElement element; - - /* Minimum size required to identify a tag at the start and - * determine its total size (0 = not interested in start) */ - guint min_start_size; - - /* Minimum size required to identify a tag at the end and - * determine its total size (0 = not interested in end) */ - guint min_end_size; - - /* Prefer start tags over end tags (default: yes) */ - gboolean prefer_start_tag; - - /*< private >*/ - gpointer reserved[GST_PADDING]; - GstTagDemuxPrivate *priv; -}; - -/* Note: subclass must also add a sink pad template in its base_init */ -struct _GstTagDemuxClass -{ - GstElementClass parent_class; - - /* vtable */ - - /* Identify tag and determine the size required to parse the tag. Buffer - * may be larger than the specified minimum size. */ - gboolean (*identify_tag) (GstTagDemux * demux, - GstBuffer * buffer, - gboolean start_tag, - guint * tag_size); - - /* Parse the tag. Buffer should be exactly the size determined by - * identify_tag() before. parse_tag() may change tag_size and return - * GST_TAG_DEMUX_RESULT_AGAIN to request a larger or smaller buffer. - * parse_tag() is also permitted to adjust tag_size to a smaller value - * and return GST_TAG_DEMUX_RESULT_OK. */ - GstTagDemuxResult (*parse_tag) (GstTagDemux * demux, - GstBuffer * buffer, - gboolean start_tag, - guint * tag_size, - GstTagList ** tags); - - /*< private >*/ - gpointer reserved[GST_PADDING]; -}; - -GType gst_tag_demux_get_type (void); - -G_END_DECLS - -#endif /* __GST_TAG_DEMUX_H__ */