/**
* SECTION:gstbaseparse
+ * @title: GstBaseParse
* @short_description: Base class for stream parsers
* @see_also: #GstBaseTransform
*
* into separate audio/video/whatever frames.
*
* It provides for:
- * <itemizedlist>
- * <listitem><para>provides one sink pad and one source pad</para></listitem>
- * <listitem><para>handles state changes</para></listitem>
- * <listitem><para>can operate in pull mode or push mode</para></listitem>
- * <listitem><para>handles seeking in both modes</para></listitem>
- * <listitem><para>handles events (SEGMENT/EOS/FLUSH)</para></listitem>
- * <listitem><para>
- * handles queries (POSITION/DURATION/SEEKING/FORMAT/CONVERT)
- * </para></listitem>
- * <listitem><para>handles flushing</para></listitem>
- * </itemizedlist>
+ *
+ * * provides one sink pad and one source pad
+ * * handles state changes
+ * * can operate in pull mode or push mode
+ * * handles seeking in both modes
+ * * handles events (SEGMENT/EOS/FLUSH)
+ * * handles queries (POSITION/DURATION/SEEKING/FORMAT/CONVERT)
+ * * handles flushing
*
* The purpose of this base class is to provide the basic functionality of
* a parser and share a lot of rather complex code.
*
- * Description of the parsing mechanism:
- * <orderedlist>
- * <listitem>
- * <itemizedlist><title>Set-up phase</title>
- * <listitem><para>
- * #GstBaseParse calls @start to inform subclass that data processing is
- * about to start now.
- * </para></listitem>
- * <listitem><para>
- * #GstBaseParse class calls @set_sink_caps to inform the subclass about
- * incoming sinkpad caps. Subclass could already set the srcpad caps
- * accordingly, but this might be delayed until calling
- * gst_base_parse_finish_frame() with a non-queued frame.
- * </para></listitem>
- * <listitem><para>
- * At least at this point subclass needs to tell the #GstBaseParse class
- * how big data chunks it wants to receive (min_frame_size). It can do
- * this with gst_base_parse_set_min_frame_size().
- * </para></listitem>
- * <listitem><para>
- * #GstBaseParse class sets up appropriate data passing mode (pull/push)
- * and starts to process the data.
- * </para></listitem>
- * </itemizedlist>
- * </listitem>
- * <listitem>
- * <itemizedlist>
- * <title>Parsing phase</title>
- * <listitem><para>
- * #GstBaseParse gathers at least min_frame_size bytes of data either
- * by pulling it from upstream or collecting buffers in an internal
- * #GstAdapter.
- * </para></listitem>
- * <listitem><para>
- * A buffer of (at least) min_frame_size bytes is passed to subclass with
- * @handle_frame. Subclass checks the contents and can optionally
- * return GST_FLOW_OK along with an amount of data to be skipped to find
- * a valid frame (which will result in a subsequent DISCONT).
- * If, otherwise, the buffer does not hold a complete frame,
- * @handle_frame can merely return and will be called again when additional
- * data is available. In push mode this amounts to an
- * additional input buffer (thus minimal additional latency), in pull mode
- * this amounts to some arbitrary reasonable buffer size increase.
- * Of course, gst_base_parse_set_min_frame_size() could also be used if a
- * very specific known amount of additional data is required.
- * If, however, the buffer holds a complete valid frame, it can pass
- * the size of this frame to gst_base_parse_finish_frame().
- * If acting as a converter, it can also merely indicate consumed input data
- * while simultaneously providing custom output data.
- * Note that baseclass performs some processing (such as tracking
- * overall consumed data rate versus duration) for each finished frame,
- * but other state is only updated upon each call to @handle_frame
- * (such as tracking upstream input timestamp).
- * </para><para>
- * Subclass is also responsible for setting the buffer metadata
- * (e.g. buffer timestamp and duration, or keyframe if applicable).
- * (although the latter can also be done by #GstBaseParse if it is
- * appropriately configured, see below). Frame is provided with
- * timestamp derived from upstream (as much as generally possible),
- * duration obtained from configuration (see below), and offset
- * if meaningful (in pull mode).
- * </para><para>
- * Note that @check_valid_frame might receive any small
- * amount of input data when leftover data is being drained (e.g. at EOS).
- * </para></listitem>
- * <listitem><para>
- * As part of finish frame processing,
- * just prior to actually pushing the buffer in question,
- * it is passed to @pre_push_frame which gives subclass yet one
- * last chance to examine buffer metadata, or to send some custom (tag)
- * events, or to perform custom (segment) filtering.
- * </para></listitem>
- * <listitem><para>
- * During the parsing process #GstBaseParseClass will handle both srcpad
- * and sinkpad events. They will be passed to subclass if @event or
- * @src_event callbacks have been provided.
- * </para></listitem>
- * </itemizedlist>
- * </listitem>
- * <listitem>
- * <itemizedlist><title>Shutdown phase</title>
- * <listitem><para>
- * #GstBaseParse class calls @stop to inform the subclass that data
- * parsing will be stopped.
- * </para></listitem>
- * </itemizedlist>
- * </listitem>
- * </orderedlist>
+ * # Description of the parsing mechanism:
+ *
+ * ## Set-up phase
+ *
+ * * #GstBaseParse calls @start to inform subclass that data processing is
+ * about to start now.
+ *
+ * * #GstBaseParse class calls @set_sink_caps to inform the subclass about
+ * incoming sinkpad caps. Subclass could already set the srcpad caps
+ * accordingly, but this might be delayed until calling
+ * gst_base_parse_finish_frame() with a non-queued frame.
+ *
+ * * At least at this point subclass needs to tell the #GstBaseParse class
+ * how big data chunks it wants to receive (min_frame_size). It can do
+ * this with gst_base_parse_set_min_frame_size().
+ *
+ * * #GstBaseParse class sets up appropriate data passing mode (pull/push)
+ * and starts to process the data.
+ *
+ * ## Parsing phase
+ *
+ * * #GstBaseParse gathers at least min_frame_size bytes of data either
+ * by pulling it from upstream or collecting buffers in an internal
+ * #GstAdapter.
+ *
+ * * A buffer of (at least) min_frame_size bytes is passed to subclass with
+ * @handle_frame. Subclass checks the contents and can optionally
+ * return GST_FLOW_OK along with an amount of data to be skipped to find
+ * a valid frame (which will result in a subsequent DISCONT).
+ * If, otherwise, the buffer does not hold a complete frame,
+ * @handle_frame can merely return and will be called again when additional
+ * data is available. In push mode this amounts to an
+ * additional input buffer (thus minimal additional latency), in pull mode
+ * this amounts to some arbitrary reasonable buffer size increase.
+ * Of course, gst_base_parse_set_min_frame_size() could also be used if a
+ * very specific known amount of additional data is required.
+ * If, however, the buffer holds a complete valid frame, it can pass
+ * the size of this frame to gst_base_parse_finish_frame().
+ * If acting as a converter, it can also merely indicate consumed input data
+ * while simultaneously providing custom output data.
+ * Note that baseclass performs some processing (such as tracking
+ * overall consumed data rate versus duration) for each finished frame,
+ * but other state is only updated upon each call to @handle_frame
+ * (such as tracking upstream input timestamp).
+ *
+ * Subclass is also responsible for setting the buffer metadata
+ * (e.g. buffer timestamp and duration, or keyframe if applicable).
+ * (although the latter can also be done by #GstBaseParse if it is
+ * appropriately configured, see below). Frame is provided with
+ * timestamp derived from upstream (as much as generally possible),
+ * duration obtained from configuration (see below), and offset
+ * if meaningful (in pull mode).
+ *
+ * Note that @check_valid_frame might receive any small
+ * amount of input data when leftover data is being drained (e.g. at EOS).
+ *
+ * * As part of finish frame processing,
+ * just prior to actually pushing the buffer in question,
+ * it is passed to @pre_push_frame which gives subclass yet one
+ * last chance to examine buffer metadata, or to send some custom (tag)
+ * events, or to perform custom (segment) filtering.
+ *
+ * * During the parsing process #GstBaseParseClass will handle both srcpad
+ * and sinkpad events. They will be passed to subclass if @event or
+ * @src_event callbacks have been provided.
+ *
+ * ## Shutdown phase
+ *
+ * * #GstBaseParse class calls @stop to inform the subclass that data
+ * parsing will be stopped.
*
* Subclass is responsible for providing pad template caps for
* source and sink pads. The pads need to be named "sink" and "src". It also
* and end of data processing.
*
* Things that subclass need to take care of:
- * <itemizedlist>
- * <listitem><para>Provide pad templates</para></listitem>
- * <listitem><para>
- * Fixate the source pad caps when appropriate
- * </para></listitem>
- * <listitem><para>
- * Inform base class how big data chunks should be retrieved. This is
- * done with gst_base_parse_set_min_frame_size() function.
- * </para></listitem>
- * <listitem><para>
- * Examine data chunks passed to subclass with @handle_frame and pass
- * proper frame(s) to gst_base_parse_finish_frame(), and setting src pad
- * caps and timestamps on frame.
- * </para></listitem>
- * <listitem><para>Provide conversion functions</para></listitem>
- * <listitem><para>
- * Update the duration information with gst_base_parse_set_duration()
- * </para></listitem>
- * <listitem><para>
- * Optionally passthrough using gst_base_parse_set_passthrough()
- * </para></listitem>
- * <listitem><para>
- * Configure various baseparse parameters using
- * gst_base_parse_set_average_bitrate(), gst_base_parse_set_syncable()
- * and gst_base_parse_set_frame_rate().
- * </para></listitem>
- * <listitem><para>
- * In particular, if subclass is unable to determine a duration, but
- * parsing (or specs) yields a frames per seconds rate, then this can be
- * provided to #GstBaseParse to enable it to cater for
- * buffer time metadata (which will be taken from upstream as much as
- * possible). Internally keeping track of frame durations and respective
- * sizes that have been pushed provides #GstBaseParse with an estimated
- * bitrate. A default @convert (used if not overridden) will then use these
- * rates to perform obvious conversions. These rates are also used to
- * update (estimated) duration at regular frame intervals.
- * </para></listitem>
- * </itemizedlist>
+ *
+ * * Provide pad templates
+ * * Fixate the source pad caps when appropriate
+ * * Inform base class how big data chunks should be retrieved. This is
+ * done with gst_base_parse_set_min_frame_size() function.
+ * * Examine data chunks passed to subclass with @handle_frame and pass
+ * proper frame(s) to gst_base_parse_finish_frame(), and setting src pad
+ * caps and timestamps on frame.
+ * * Provide conversion functions
+ * * Update the duration information with gst_base_parse_set_duration()
+ * * Optionally passthrough using gst_base_parse_set_passthrough()
+ * * Configure various baseparse parameters using
+ * gst_base_parse_set_average_bitrate(), gst_base_parse_set_syncable()
+ * and gst_base_parse_set_frame_rate().
+ *
+ * * In particular, if subclass is unable to determine a duration, but
+ * parsing (or specs) yields a frames per seconds rate, then this can be
+ * provided to #GstBaseParse to enable it to cater for
+ * buffer time metadata (which will be taken from upstream as much as
+ * possible). Internally keeping track of frame durations and respective
+ * sizes that have been pushed provides #GstBaseParse with an estimated
+ * bitrate. A default @convert (used if not overridden) will then use these
+ * rates to perform obvious conversions. These rates are also used to
+ * update (estimated) duration at regular frame intervals.
*
*/
#define MIN_FRAMES_TO_POST_BITRATE 10
#define TARGET_DIFFERENCE (20 * GST_SECOND)
#define MAX_INDEX_ENTRIES 4096
+#define UPDATE_THRESHOLD 2
+
+#define ABSDIFF(a,b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a)))
GST_DEBUG_CATEGORY_STATIC (gst_base_parse_debug);
#define GST_CAT_DEFAULT gst_base_parse_debug
GstClockTime next_dts;
GstClockTime prev_pts;
GstClockTime prev_dts;
+ gboolean prev_dts_from_pts;
GstClockTime frame_duration;
gboolean seen_keyframe;
gboolean is_video;
gboolean post_min_bitrate;
gboolean post_avg_bitrate;
gboolean post_max_bitrate;
+
guint min_bitrate;
guint avg_bitrate;
guint max_bitrate;
/* When we need to skip more data than we have currently */
guint skip;
+
+ /* Tag handling (stream tags only, global tags are passed through as-is) */
+ GstTagList *upstream_tags;
+ GstTagList *parser_tags;
+ GstTagMergeMode parser_tags_merge_mode;
+ gboolean tags_changed;
};
typedef struct _GstBaseParseSeek
GstObject * parent, GstPadMode mode, gboolean active);
static gboolean gst_base_parse_handle_seek (GstBaseParse * parse,
GstEvent * event);
-static void gst_base_parse_handle_tag (GstBaseParse * parse, GstEvent * event);
+static void gst_base_parse_set_upstream_tags (GstBaseParse * parse,
+ GstTagList * taglist);
static void gst_base_parse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static gboolean gst_base_parse_src_query_default (GstBaseParse * parse,
GstQuery * query);
-static void gst_base_parse_drain (GstBaseParse * parse);
-
-static void gst_base_parse_post_bitrates (GstBaseParse * parse,
- gboolean post_min, gboolean post_avg, gboolean post_max);
-
static gint64 gst_base_parse_find_offset (GstBaseParse * parse,
GstClockTime time, gboolean before, GstClockTime * _ts);
static GstFlowReturn gst_base_parse_locate_time (GstBaseParse * parse,
GST_DEBUG_OBJECT (parse, "init ok");
GST_OBJECT_FLAG_SET (parse, GST_ELEMENT_FLAG_INDEXABLE);
+
+ parse->priv->upstream_tags = NULL;
+ parse->priv->parser_tags = NULL;
+ parse->priv->parser_tags_merge_mode = GST_TAG_MERGE_APPEND;
}
static void
}
}
-static GstBaseParseFrame *
+GstBaseParseFrame *
gst_base_parse_frame_copy (GstBaseParseFrame * frame)
{
GstBaseParseFrame *copy;
}
static inline void
-gst_base_parse_frame_update (GstBaseParse * parse, GstBaseParseFrame * frame,
- GstBuffer * buf)
+gst_base_parse_update_flags (GstBaseParse * parse)
{
- gst_buffer_replace (&frame->buffer, buf);
-
parse->flags = 0;
/* set flags one by one for clarity */
parse->flags |= GST_BASE_PARSE_FLAG_LOST_SYNC;
}
+static inline void
+gst_base_parse_update_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
+{
+ if (G_UNLIKELY (parse->priv->discont)) {
+ GST_DEBUG_OBJECT (parse, "marking DISCONT");
+ GST_BUFFER_FLAG_SET (frame->buffer, GST_BUFFER_FLAG_DISCONT);
+ } else {
+ GST_BUFFER_FLAG_UNSET (frame->buffer, GST_BUFFER_FLAG_DISCONT);
+ }
+
+ if (parse->priv->prev_offset != parse->priv->offset || parse->priv->new_frame) {
+ GST_LOG_OBJECT (parse, "marking as new frame");
+ frame->flags |= GST_BASE_PARSE_FRAME_FLAG_NEW_FRAME;
+ }
+
+ frame->offset = parse->priv->prev_offset = parse->priv->offset;
+}
+
static void
gst_base_parse_reset (GstBaseParse * parse)
{
parse->priv->pts_interpolate = TRUE;
parse->priv->infer_ts = TRUE;
parse->priv->has_timing_info = FALSE;
- parse->priv->post_min_bitrate = TRUE;
- parse->priv->post_avg_bitrate = TRUE;
- parse->priv->post_max_bitrate = TRUE;
parse->priv->min_bitrate = G_MAXUINT;
parse->priv->max_bitrate = 0;
parse->priv->avg_bitrate = 0;
if (parse->priv->adapter)
gst_adapter_clear (parse->priv->adapter);
+ gst_base_parse_set_upstream_tags (parse, NULL);
+
+ if (parse->priv->parser_tags) {
+ gst_tag_list_unref (parse->priv->parser_tags);
+ parse->priv->parser_tags = NULL;
+ }
+ parse->priv->parser_tags_merge_mode = GST_TAG_MERGE_APPEND;
+
parse->priv->new_frame = TRUE;
parse->priv->first_buffer = TRUE;
GST_OBJECT_UNLOCK (parse);
}
+static gboolean
+gst_base_parse_check_bitrate_tag (GstBaseParse * parse, const gchar * tag)
+{
+ gboolean got_tag = FALSE;
+ guint n = 0;
+
+ if (parse->priv->upstream_tags != NULL)
+ got_tag = gst_tag_list_get_uint (parse->priv->upstream_tags, tag, &n);
+
+ if (!got_tag && parse->priv->parser_tags != NULL)
+ got_tag = gst_tag_list_get_uint (parse->priv->parser_tags, tag, &n);
+
+ return got_tag;
+}
+
+/* check if upstream or subclass tags contain bitrates already */
+static void
+gst_base_parse_check_bitrate_tags (GstBaseParse * parse)
+{
+ parse->priv->post_min_bitrate =
+ !gst_base_parse_check_bitrate_tag (parse, GST_TAG_MINIMUM_BITRATE);
+ parse->priv->post_avg_bitrate =
+ !gst_base_parse_check_bitrate_tag (parse, GST_TAG_BITRATE);
+ parse->priv->post_max_bitrate =
+ !gst_base_parse_check_bitrate_tag (parse, GST_TAG_MAXIMUM_BITRATE);
+}
+
+/* Queues new tag event with the current combined state of the stream tags
+ * (i.e. upstream tags merged with subclass tags and current baseparse tags) */
+static void
+gst_base_parse_queue_tag_event_update (GstBaseParse * parse)
+{
+ GstTagList *merged_tags;
+
+ GST_LOG_OBJECT (parse, "upstream : %" GST_PTR_FORMAT,
+ parse->priv->upstream_tags);
+ GST_LOG_OBJECT (parse, "parser : %" GST_PTR_FORMAT,
+ parse->priv->parser_tags);
+ GST_LOG_OBJECT (parse, "mode : %d", parse->priv->parser_tags_merge_mode);
+
+ merged_tags =
+ gst_tag_list_merge (parse->priv->upstream_tags, parse->priv->parser_tags,
+ parse->priv->parser_tags_merge_mode);
+
+ GST_DEBUG_OBJECT (parse, "merged : %" GST_PTR_FORMAT, merged_tags);
+
+ if (merged_tags == NULL)
+ return;
+
+ if (gst_tag_list_is_empty (merged_tags)) {
+ gst_tag_list_unref (merged_tags);
+ return;
+ }
+
+ if (parse->priv->framecount >= MIN_FRAMES_TO_POST_BITRATE) {
+ /* only add bitrate tags to non-empty taglists for now, and only if neither
+ * upstream tags nor the subclass sets the bitrate tag in question already */
+ if (parse->priv->min_bitrate != G_MAXUINT && parse->priv->post_min_bitrate) {
+ GST_LOG_OBJECT (parse, "adding min bitrate %u", parse->priv->min_bitrate);
+ gst_tag_list_add (merged_tags, GST_TAG_MERGE_KEEP,
+ GST_TAG_MINIMUM_BITRATE, parse->priv->min_bitrate, NULL);
+ }
+ if (parse->priv->max_bitrate != 0 && parse->priv->post_max_bitrate) {
+ GST_LOG_OBJECT (parse, "adding max bitrate %u", parse->priv->max_bitrate);
+ gst_tag_list_add (merged_tags, GST_TAG_MERGE_KEEP,
+ GST_TAG_MAXIMUM_BITRATE, parse->priv->max_bitrate, NULL);
+ }
+ if (parse->priv->avg_bitrate != 0 && parse->priv->post_avg_bitrate) {
+ parse->priv->posted_avg_bitrate = parse->priv->avg_bitrate;
+ GST_LOG_OBJECT (parse, "adding avg bitrate %u", parse->priv->avg_bitrate);
+ gst_tag_list_add (merged_tags, GST_TAG_MERGE_KEEP,
+ GST_TAG_BITRATE, parse->priv->avg_bitrate, NULL);
+ }
+ }
+
+ parse->priv->pending_events =
+ g_list_prepend (parse->priv->pending_events,
+ gst_event_new_tag (merged_tags));
+}
+
/* gst_base_parse_parse_frame:
* @parse: #GstBaseParse.
* @buffer: #GstBuffer.
return ret;
}
+static gboolean
+update_upstream_provided (GQuark field_id, const GValue * value,
+ gpointer user_data)
+{
+ GstCaps *default_caps = user_data;
+ gint i;
+ gint caps_size;
+
+ caps_size = gst_caps_get_size (default_caps);
+ for (i = 0; i < caps_size; i++) {
+ GstStructure *structure = gst_caps_get_structure (default_caps, i);
+ if (gst_structure_id_has_field (structure, field_id))
+ gst_structure_id_set_value (structure, field_id, value);
+ }
+
+ return TRUE;
+}
+
+static GstCaps *
+gst_base_parse_negotiate_default_caps (GstBaseParse * parse)
+{
+ GstCaps *caps, *templcaps;
+ GstCaps *sinkcaps = NULL;
+ GstCaps *default_caps = NULL;
+ GstStructure *structure;
+
+ templcaps = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SRC_PAD (parse));
+ caps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), templcaps);
+ if (caps)
+ gst_caps_unref (templcaps);
+ else
+ caps = templcaps;
+ templcaps = NULL;
+
+ if (!caps || gst_caps_is_empty (caps) || gst_caps_is_any (caps)) {
+ goto caps_error;
+ }
+
+ GST_LOG_OBJECT (parse, "peer caps %" GST_PTR_FORMAT, caps);
+
+ /* before fixating, try to use whatever upstream provided */
+ default_caps = gst_caps_copy (caps);
+ sinkcaps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (parse));
+
+ GST_LOG_OBJECT (parse, "current caps %" GST_PTR_FORMAT " for sinkpad",
+ sinkcaps);
+
+ if (sinkcaps) {
+ structure = gst_caps_get_structure (sinkcaps, 0);
+ gst_structure_foreach (structure, update_upstream_provided, default_caps);
+ }
+
+ default_caps = gst_caps_fixate (default_caps);
+
+ if (!default_caps) {
+ GST_WARNING_OBJECT (parse, "Failed to create default caps !");
+ goto caps_error;
+ }
+
+ GST_INFO_OBJECT (parse,
+ "Chose default caps %" GST_PTR_FORMAT " for initial gap", default_caps);
+
+ if (sinkcaps)
+ gst_caps_unref (sinkcaps);
+ gst_caps_unref (caps);
+
+ return default_caps;
+
+caps_error:
+ {
+ if (caps)
+ gst_caps_unref (caps);
+ if (sinkcaps)
+ gst_caps_unref (sinkcaps);
+ return NULL;
+ }
+}
+
/* gst_base_parse_sink_event:
* @pad: #GstPad that received the event.
* @event: #GstEvent to be handled.
return ret;
}
-
/* gst_base_parse_sink_event_default:
* @parse: #GstBaseParse.
* @event: #GstEvent to be handled.
parse->priv->last_dts = GST_CLOCK_TIME_NONE;
parse->priv->prev_pts = GST_CLOCK_TIME_NONE;
parse->priv->prev_dts = GST_CLOCK_TIME_NONE;
+ parse->priv->prev_dts_from_pts = FALSE;
parse->priv->discont = TRUE;
parse->priv->seen_keyframe = FALSE;
parse->priv->skip = 0;
GST_ELEMENT_ERROR (parse, STREAM, WRONG_TYPE,
("No valid frames found before end of stream"), (NULL));
}
- /* newsegment and other serialized events before eos */
- gst_base_parse_push_pending_events (parse);
if (!parse->priv->saw_gaps
&& parse->priv->framecount < MIN_FRAMES_TO_POST_BITRATE) {
/* We've not posted bitrate tags yet - do so now */
- gst_base_parse_post_bitrates (parse, TRUE, TRUE, TRUE);
+ gst_base_parse_queue_tag_event_update (parse);
}
+
+ /* newsegment and other serialized events before eos */
+ gst_base_parse_push_pending_events (parse);
+
forward_immediate = TRUE;
break;
case GST_EVENT_CUSTOM_DOWNSTREAM:{
{
GST_DEBUG_OBJECT (parse, "draining current data due to gap event");
+ /* Ensure we have caps before forwarding the event */
+ if (!gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (parse))) {
+ GstCaps *default_caps = NULL;
+ if ((default_caps = gst_base_parse_negotiate_default_caps (parse))) {
+ GList *l;
+ GstEvent *caps_event = gst_event_new_caps (default_caps);
+
+ GST_DEBUG_OBJECT (parse,
+ "Store caps event to pending list for initial pre-rolling");
+
+ /* Events are in decreasing order. Go down the list until we
+ * find the first pre-CAPS event and insert our CAPS event there.
+ *
+ * There should be a SEGMENT event already, which is > CAPS */
+ for (l = parse->priv->pending_events; l; l = l->next) {
+ GstEvent *e = l->data;
+
+ if (GST_EVENT_TYPE (e) < GST_EVENT_CAPS) {
+ parse->priv->pending_events =
+ g_list_insert_before (parse->priv->pending_events, l,
+ caps_event);
+ break;
+ }
+ }
+ /* No pending event that is < CAPS, so we have to add it at the very
+ * end of the list */
+ if (!l) {
+ parse->priv->pending_events =
+ g_list_append (parse->priv->pending_events, caps_event);
+ }
+ gst_caps_unref (default_caps);
+ } else {
+ gst_event_unref (event);
+ event = NULL;
+ ret = FALSE;
+ GST_ELEMENT_ERROR (parse, STREAM, FORMAT, (NULL),
+ ("Parser output not negotiated before GAP event."));
+ break;
+ }
+ }
+
gst_base_parse_push_pending_events (parse);
if (parse->segment.rate > 0.0)
break;
}
case GST_EVENT_TAG:
- /* See if any bitrate tags were posted */
- gst_base_parse_handle_tag (parse, event);
- break;
+ {
+ GstTagList *tags = NULL;
+
+ gst_event_parse_tag (event, &tags);
+
+ /* We only care about stream tags here, global tags we just forward */
+ if (gst_tag_list_get_scope (tags) != GST_TAG_SCOPE_STREAM)
+ break;
+ gst_base_parse_set_upstream_tags (parse, tags);
+ gst_base_parse_queue_tag_event_update (parse);
+ parse->priv->tags_changed = FALSE;
+ gst_event_unref (event);
+ event = NULL;
+ ret = TRUE;
+ break;
+ }
case GST_EVENT_STREAM_START:
+ {
if (parse->priv->pad_mode != GST_PAD_MODE_PULL)
forward_immediate = TRUE;
- break;
+ gst_base_parse_set_upstream_tags (parse, NULL);
+ parse->priv->tags_changed = TRUE;
+ break;
+ }
default:
break;
}
return TRUE;
}
+ if (parse->priv->upstream_format != GST_FORMAT_BYTES) {
+ /* don't do byte format conversions if we're not really parsing
+ * a raw elementary stream, since we don't really have BYTES
+ * position / duration info */
+ if (src_format == GST_FORMAT_BYTES || dest_format == GST_FORMAT_BYTES)
+ goto no_slaved_conversions;
+ }
+
/* need at least some frames */
if (!parse->priv->framecount)
goto no_framecount;
G_GUINT64_FORMAT, duration, bytes);
return FALSE;
}
-
-}
-
-static void
-gst_base_parse_update_duration (GstBaseParse * baseparse)
-{
- GstPad *peer;
- GstBaseParse *parse;
-
- parse = GST_BASE_PARSE (baseparse);
-
- peer = gst_pad_get_peer (parse->sinkpad);
- if (peer) {
- gboolean qres = FALSE;
- gint64 ptot, dest_value;
-
- qres = gst_pad_query_duration (peer, GST_FORMAT_BYTES, &ptot);
- gst_object_unref (GST_OBJECT (peer));
- if (qres) {
- if (gst_base_parse_convert (parse, GST_FORMAT_BYTES, ptot,
- GST_FORMAT_TIME, &dest_value)) {
-
- /* inform if duration changed, but try to avoid spamming */
- parse->priv->estimated_drift +=
- dest_value - parse->priv->estimated_duration;
-
- parse->priv->estimated_duration = dest_value;
- GST_LOG_OBJECT (parse,
- "updated estimated duration to %" GST_TIME_FORMAT,
- GST_TIME_ARGS (dest_value));
-
- if (parse->priv->estimated_drift > GST_SECOND ||
- parse->priv->estimated_drift < -GST_SECOND) {
- gst_element_post_message (GST_ELEMENT (parse),
- gst_message_new_duration_changed (GST_OBJECT (parse)));
- parse->priv->estimated_drift = 0;
- }
- }
- }
+no_slaved_conversions:
+ {
+ GST_DEBUG_OBJECT (parse,
+ "Can't do format conversions when upstream format is not BYTES");
+ return FALSE;
}
}
static void
-gst_base_parse_post_bitrates (GstBaseParse * parse, gboolean post_min,
- gboolean post_avg, gboolean post_max)
+gst_base_parse_update_duration (GstBaseParse * parse)
{
- GstTagList *taglist = NULL;
-
- if (post_min && parse->priv->post_min_bitrate) {
- taglist = gst_tag_list_new_empty ();
-
- gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
- GST_TAG_MINIMUM_BITRATE, parse->priv->min_bitrate, NULL);
- }
-
- if (post_avg && parse->priv->post_avg_bitrate) {
- if (taglist == NULL)
- taglist = gst_tag_list_new_empty ();
+ gint64 ptot, dest_value;
- parse->priv->posted_avg_bitrate = parse->priv->avg_bitrate;
- gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_BITRATE,
- parse->priv->avg_bitrate, NULL);
- }
-
- if (post_max && parse->priv->post_max_bitrate) {
- if (taglist == NULL)
- taglist = gst_tag_list_new_empty ();
+ if (!gst_pad_peer_query_duration (parse->sinkpad, GST_FORMAT_BYTES, &ptot))
+ return;
- gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
- GST_TAG_MAXIMUM_BITRATE, parse->priv->max_bitrate, NULL);
- }
+ if (!gst_base_parse_convert (parse, GST_FORMAT_BYTES, ptot,
+ GST_FORMAT_TIME, &dest_value))
+ return;
- GST_DEBUG_OBJECT (parse, "Updated bitrates. Min: %u, Avg: %u, Max: %u",
- parse->priv->min_bitrate, parse->priv->avg_bitrate,
- parse->priv->max_bitrate);
+ /* inform if duration changed, but try to avoid spamming */
+ parse->priv->estimated_drift += dest_value - parse->priv->estimated_duration;
- if (taglist != NULL) {
- gst_pad_push_event (parse->srcpad, gst_event_new_tag (taglist));
+ parse->priv->estimated_duration = dest_value;
+ GST_LOG_OBJECT (parse,
+ "updated estimated duration to %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (dest_value));
+
+ if (parse->priv->estimated_drift > GST_SECOND ||
+ parse->priv->estimated_drift < -GST_SECOND) {
+ gst_element_post_message (GST_ELEMENT (parse),
+ gst_message_new_duration_changed (GST_OBJECT (parse)));
+ parse->priv->estimated_drift = 0;
}
}
static void
gst_base_parse_update_bitrates (GstBaseParse * parse, GstBaseParseFrame * frame)
{
- /* Only update the tag on a 10 kbps delta */
- static const gint update_threshold = 10000;
-
guint64 data_len, frame_dur;
- gint overhead, frame_bitrate, old_avg_bitrate;
- gboolean update_min = FALSE, update_avg = FALSE, update_max = FALSE;
+ gint overhead;
+ guint frame_bitrate;
+ guint64 frame_bitrate64;
GstBuffer *buffer = frame->buffer;
overhead = frame->overhead;
/* duration should be valid by now,
* either set by subclass or maybe based on fps settings */
if (GST_BUFFER_DURATION_IS_VALID (buffer) && parse->priv->acc_duration != 0) {
+ guint64 avg_bitrate;
+
/* Calculate duration of a frame from buffer properties */
frame_dur = GST_BUFFER_DURATION (buffer);
- parse->priv->avg_bitrate = (8 * parse->priv->data_bytecount * GST_SECOND) /
- parse->priv->acc_duration;
+ avg_bitrate = gst_util_uint64_scale (GST_SECOND,
+ 8 * parse->priv->data_bytecount, parse->priv->acc_duration);
+ if (avg_bitrate > G_MAXUINT)
+ return;
+
+ parse->priv->avg_bitrate = avg_bitrate;
} else {
/* No way to figure out frame duration (is this even possible?) */
return;
if (parse->priv->bitrate) {
parse->priv->avg_bitrate = parse->priv->bitrate;
/* spread this (confirmed) info ASAP */
- if (parse->priv->posted_avg_bitrate != parse->priv->avg_bitrate)
- gst_base_parse_post_bitrates (parse, FALSE, TRUE, FALSE);
+ if (parse->priv->post_avg_bitrate &&
+ parse->priv->posted_avg_bitrate != parse->priv->avg_bitrate)
+ parse->priv->tags_changed = TRUE;
}
- if (frame_dur)
- frame_bitrate = (8 * data_len * GST_SECOND) / frame_dur;
- else
+ if (!frame_dur)
+ return;
+
+ frame_bitrate64 = gst_util_uint64_scale (GST_SECOND, 8 * data_len, frame_dur);
+
+ if (frame_bitrate64 > G_MAXUINT)
return;
+ frame_bitrate = (guint) frame_bitrate64;
+
GST_LOG_OBJECT (parse, "frame bitrate %u, avg bitrate %u", frame_bitrate,
parse->priv->avg_bitrate);
- if (parse->priv->framecount < MIN_FRAMES_TO_POST_BITRATE) {
- goto exit;
- } else if (parse->priv->framecount == MIN_FRAMES_TO_POST_BITRATE) {
- /* always post all at threshold time */
- update_min = update_max = update_avg = TRUE;
- }
+ if (parse->priv->framecount < MIN_FRAMES_TO_POST_BITRATE)
+ return;
+
+ if (parse->priv->framecount == MIN_FRAMES_TO_POST_BITRATE &&
+ (parse->priv->post_min_bitrate || parse->priv->post_avg_bitrate
+ || parse->priv->post_max_bitrate))
+ parse->priv->tags_changed = TRUE;
if (G_LIKELY (parse->priv->framecount >= MIN_FRAMES_TO_POST_BITRATE)) {
if (frame_bitrate < parse->priv->min_bitrate) {
parse->priv->min_bitrate = frame_bitrate;
- update_min = TRUE;
+ if (parse->priv->post_min_bitrate)
+ parse->priv->tags_changed = TRUE;
}
if (frame_bitrate > parse->priv->max_bitrate) {
parse->priv->max_bitrate = frame_bitrate;
- update_max = TRUE;
+ if (parse->priv->post_max_bitrate)
+ parse->priv->tags_changed = TRUE;
}
- old_avg_bitrate = parse->priv->posted_avg_bitrate;
- if ((gint) (old_avg_bitrate - parse->priv->avg_bitrate) > update_threshold
- || (gint) (parse->priv->avg_bitrate - old_avg_bitrate) >
- update_threshold)
- update_avg = TRUE;
+ /* Only update the tag on a 2% change */
+ if (parse->priv->post_avg_bitrate && parse->priv->avg_bitrate) {
+ guint64 diffprev = gst_util_uint64_scale_int (100,
+ ABSDIFF (parse->priv->avg_bitrate, parse->priv->posted_avg_bitrate),
+ parse->priv->avg_bitrate);
+ if (diffprev >= UPDATE_THRESHOLD)
+ parse->priv->tags_changed = TRUE;
+ }
}
-
- if ((update_min || update_avg || update_max))
- gst_base_parse_post_bitrates (parse, update_min, update_avg, update_max);
-
-exit:
- return;
}
/**
GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET (buffer),
gst_buffer_get_size (buffer));
- if (parse->priv->discont) {
- GST_DEBUG_OBJECT (parse, "marking DISCONT");
- GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
- parse->priv->discont = FALSE;
- }
-
GST_BUFFER_OFFSET (buffer) = parse->priv->offset;
- frame = gst_base_parse_frame_new (buffer, 0, 0);
+ gst_base_parse_update_flags (parse);
- /* also ensure to update state flags */
- gst_base_parse_frame_update (parse, frame, buffer);
+ frame = gst_base_parse_frame_new (buffer, 0, 0);
gst_buffer_unref (buffer);
+ gst_base_parse_update_frame (parse, frame);
- if (parse->priv->prev_offset != parse->priv->offset || parse->priv->new_frame) {
- GST_LOG_OBJECT (parse, "marking as new frame");
- parse->priv->new_frame = FALSE;
- frame->flags |= GST_BASE_PARSE_FRAME_FLAG_NEW_FRAME;
- }
-
- frame->offset = parse->priv->prev_offset = parse->priv->offset;
+ /* clear flags for next frame */
+ parse->priv->discont = FALSE;
+ parse->priv->new_frame = FALSE;
/* use default handler to provide initial (upstream) metadata */
gst_base_parse_parse_frame (parse, frame);
gst_adapter_clear (parse->priv->adapter);
}
+ if (*skip == 0 && *flushed == 0) {
+ /* Carry over discont if we need more data */
+ if (GST_BUFFER_IS_DISCONT (frame->buffer))
+ parse->priv->discont = TRUE;
+ }
+
gst_base_parse_frame_free (frame);
return ret;
gst_base_parse_check_media (parse);
}
+ if (parse->priv->tags_changed) {
+ gst_base_parse_queue_tag_event_update (parse);
+ parse->priv->tags_changed = FALSE;
+ }
+
/* Push pending events, including SEGMENT events */
gst_base_parse_push_pending_events (parse);
frame->flags |= GST_BASE_PARSE_FRAME_FLAG_CLIP;
}
+ /* Push pending events, if there are any new ones
+ * like tags added by pre_push_frame */
+ if (parse->priv->tags_changed) {
+ gst_base_parse_queue_tag_event_update (parse);
+ parse->priv->tags_changed = FALSE;
+ }
+ gst_base_parse_push_pending_events (parse);
+
/* take final ownership of frame buffer */
if (frame->out_buffer) {
buffer = frame->out_buffer;
if (ret == GST_BASE_PARSE_FLOW_DROPPED) {
GST_LOG_OBJECT (parse, "frame (%" G_GSIZE_FORMAT " bytes) dropped", size);
+ if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
+ parse->priv->discont = TRUE;
gst_buffer_unref (buffer);
ret = GST_FLOW_OK;
} else if (ret == GST_FLOW_OK) {
}
/* Update current running segment position */
- if (ret == GST_FLOW_OK && last_stop != GST_CLOCK_TIME_NONE &&
- parse->segment.position < last_stop)
+ if ((ret == GST_FLOW_OK || ret == GST_FLOW_NOT_LINKED)
+ && last_stop != GST_CLOCK_TIME_NONE
+ && parse->segment.position < last_stop)
parse->segment.position = last_stop;
return ret;
return ret;
}
-/* gst_base_parse_drain:
+/**
+ * gst_base_parse_drain:
+ * @parse: a #GstBaseParse
*
* Drains the adapter until it is empty. It decreases the min_frame_size to
* match the current adapter size and calls chain method until the adapter
* is emptied or chain returns with error.
+ *
+ * Since: 1.12
*/
-static void
+void
gst_base_parse_drain (GstBaseParse * parse)
{
guint avail;
if (first) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
first = FALSE;
+ } else {
+ /* likewise, subsequent buffers should never have DISCONT
+ * according to the "reverse fragment protocol", or such would
+ * confuse a downstream decoder
+ * (could be DISCONT due to aggregating upstream fragments by parsing) */
+ GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
}
/* iterate output queue an push downstream */
parse->priv->prev_pts = GST_CLOCK_TIME_NONE;
parse->priv->next_dts = GST_CLOCK_TIME_NONE;
parse->priv->prev_dts = GST_CLOCK_TIME_NONE;
+ parse->priv->prev_dts_from_pts = FALSE;
/* prevent it hanging around stop all the time */
parse->segment.position = GST_CLOCK_TIME_NONE;
/* mark next run */
GstBuffer *tmpbuf = NULL;
guint fsize = 1;
gint skip = -1;
- const guint8 *data;
guint min_size, av;
GstClockTime pts, dts;
/* Stop either when adapter is empty or we are flushing */
while (!parse->priv->flushing) {
gint flush = 0;
+ gboolean updated_prev_pts = FALSE;
/* note: if subclass indicates MAX fsize,
* this will not likely be available anyway ... */
* but interpolate in between */
pts = gst_adapter_prev_pts (parse->priv->adapter, NULL);
dts = gst_adapter_prev_dts (parse->priv->adapter, NULL);
- if (GST_CLOCK_TIME_IS_VALID (pts) && (parse->priv->prev_pts != pts))
+ if (GST_CLOCK_TIME_IS_VALID (pts) && (parse->priv->prev_pts != pts)) {
parse->priv->prev_pts = parse->priv->next_pts = pts;
+ updated_prev_pts = TRUE;
+ }
- if (GST_CLOCK_TIME_IS_VALID (dts) && (parse->priv->prev_dts != dts))
+ if (GST_CLOCK_TIME_IS_VALID (dts) && (parse->priv->prev_dts != dts)) {
parse->priv->prev_dts = parse->priv->next_dts = dts;
+ parse->priv->prev_dts_from_pts = FALSE;
+ }
/* we can mess with, erm interpolate, timestamps,
* and incoming stuff has PTS but no DTS seen so far,
if (parse->priv->infer_ts &&
parse->priv->pts_interpolate &&
!GST_CLOCK_TIME_IS_VALID (dts) &&
- !GST_CLOCK_TIME_IS_VALID (parse->priv->prev_dts) &&
- GST_CLOCK_TIME_IS_VALID (pts))
- parse->priv->next_dts = pts;
+ (!GST_CLOCK_TIME_IS_VALID (parse->priv->prev_dts)
+ || (parse->priv->prev_dts_from_pts && updated_prev_pts))
+ && GST_CLOCK_TIME_IS_VALID (pts)) {
+ parse->priv->prev_dts = parse->priv->next_dts = pts;
+ parse->priv->prev_dts_from_pts = TRUE;
+ }
/* always pass all available data */
- data = gst_adapter_map (parse->priv->adapter, av);
- /* arrange for actual data to be copied if subclass tries to,
- * since what is passed is tied to the adapter */
- tmpbuf = gst_buffer_new_wrapped_full (GST_MEMORY_FLAG_READONLY |
- GST_MEMORY_FLAG_NO_SHARE, (gpointer) data, av, 0, av, NULL, NULL);
+ tmpbuf = gst_adapter_get_buffer (parse->priv->adapter, av);
/* already inform subclass what timestamps we have planned,
* at least if provided by time-based upstream */
if (parse->priv->upstream_format == GST_FORMAT_TIME) {
+ tmpbuf = gst_buffer_make_writable (tmpbuf);
GST_BUFFER_PTS (tmpbuf) = parse->priv->next_pts;
GST_BUFFER_DTS (tmpbuf) = parse->priv->next_dts;
+ GST_BUFFER_DURATION (tmpbuf) = GST_CLOCK_TIME_NONE;
}
/* keep the adapter mapped, so keep track of what has to be flushed */
ret = gst_base_parse_handle_buffer (parse, tmpbuf, &skip, &flush);
tmpbuf = NULL;
- /* probably already implicitly unmapped due to adapter operation,
- * but for good measure ... */
- gst_adapter_unmap (parse->priv->adapter);
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED) {
goto done;
}
ret = old_ret;
goto done;
}
- old_ret = ret;
+ if (old_ret == GST_FLOW_OK)
+ old_ret = ret;
}
done:
}
ret = gst_base_parse_scan_frame (parse, klass);
- if (ret != GST_FLOW_OK)
- goto done;
/* eat expected eos signalling past segment in reverse playback */
if (parse->segment.rate < 0.0 && ret == GST_FLOW_EOS &&
gst_base_parse_finish_fragment (parse, FALSE);
/* force previous fragment */
parse->priv->offset = -1;
- ret = GST_FLOW_OK;
+ goto eos;
}
+ if (ret != GST_FLOW_OK)
+ goto done;
+
done:
if (ret == GST_FLOW_EOS)
goto eos;
/* for fatal errors we post an error message, wrong-state is
* not fatal because it happens due to flushes and only means
* that we should stop now. */
- GST_ELEMENT_ERROR (parse, STREAM, FAILED, (NULL),
- ("streaming stopped, reason %s", gst_flow_get_name (ret)));
+ GST_ELEMENT_FLOW_ERROR (parse, ret);
push_eos = TRUE;
}
if (push_eos) {
+ if (parse->priv->estimated_duration <= 0) {
+ gst_base_parse_update_duration (parse);
+ }
/* Push pending events, including SEGMENT events */
gst_base_parse_push_pending_events (parse);
goto baseparse_push;
parse->priv->push_stream_start = TRUE;
+ /* In pull mode, upstream is BYTES */
+ parse->priv->upstream_format = GST_FORMAT_BYTES;
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_base_parse_loop,
sinkpad, NULL);
result = klass->stop (parse);
parse->priv->pad_mode = GST_PAD_MODE_NONE;
+ parse->priv->upstream_format = GST_FORMAT_UNDEFINED;
}
GST_DEBUG_OBJECT (parse, "activate return: %d", result);
return result;
gst_util_uint64_scale (GST_SECOND, fps_den * lead_out, fps_num);
/* aim for about 1.5s to estimate duration */
if (parse->priv->update_interval < 0) {
- parse->priv->update_interval = fps_num * 3 / (fps_den * 2);
+ guint64 interval = gst_util_uint64_scale (fps_num, 3,
+ G_GUINT64_CONSTANT (2) * fps_den);
+
+ parse->priv->update_interval = MIN (interval, G_MAXINT);
+
GST_LOG_OBJECT (parse, "estimated update interval to %d frames",
parse->priv->update_interval);
}
if (!res) {
/* Fall back on interpreting segment */
GST_OBJECT_LOCK (parse);
- if (format == GST_FORMAT_BYTES) {
+ /* Only reply BYTES if upstream is in BYTES already, otherwise
+ * we're not in charge */
+ if (format == GST_FORMAT_BYTES
+ && parse->priv->upstream_format == GST_FORMAT_BYTES) {
dest_value = parse->priv->offset;
res = TRUE;
} else if (format == parse->segment.format &&
res = TRUE;
}
GST_OBJECT_UNLOCK (parse);
- if (!res) {
+ if (!res && parse->priv->upstream_format == GST_FORMAT_BYTES) {
/* no precise result, upstream no idea either, then best estimate */
- /* priv->offset is updated in both PUSH/PULL modes */
+ /* priv->offset is updated in both PUSH/PULL modes, *iff* we're
+ * in charge of things */
res = gst_base_parse_convert (parse,
GST_FORMAT_BYTES, parse->priv->offset, format, &dest_value);
}
if (!gst_base_parse_get_duration (parse, GST_FORMAT_TIME, &duration)
|| duration == -1) {
/* seekable if we still have a chance to get duration later on */
- seekable =
- parse->priv->upstream_seekable && parse->priv->update_interval;
+ seekable = parse->priv->upstream_seekable &&
+ (parse->priv->update_interval > 0);
} else {
seekable = parse->priv->upstream_seekable;
GST_LOG_OBJECT (parse, "already determine upstream seekabled: %d",
if (rate < 0.0 && parse->priv->pad_mode == GST_PAD_MODE_PUSH)
goto negative_rate;
- if (rate < 0.0 && parse->priv->pad_mode == GST_PAD_MODE_PULL)
- goto negative_rate_pull_mode;
-
if (start_type != GST_SEEK_TYPE_SET ||
(stop_type != GST_SEEK_TYPE_SET && stop_type != GST_SEEK_TYPE_NONE))
goto wrong_type;
GST_DEBUG_OBJECT (parse, "accurate seek possible");
accurate = TRUE;
}
+
if (accurate) {
- GstClockTime startpos = seeksegment.position;
+ GstClockTime startpos;
+ if (rate >= 0)
+ startpos = seeksegment.position;
+ else
+ startpos = start;
/* accurate requested, so ... seek a bit before target */
if (startpos < parse->priv->lead_in_ts)
startpos = 0;
else
startpos -= parse->priv->lead_in_ts;
+
+ if (seeksegment.stop == -1 && seeksegment.duration != -1)
+ seeksegment.stop = seeksegment.start + seeksegment.duration;
+
seekpos = gst_base_parse_find_offset (parse, startpos, TRUE, &start_ts);
seekstop = gst_base_parse_find_offset (parse, seeksegment.stop, FALSE,
NULL);
} else {
- start_ts = seeksegment.position;
- if (!gst_base_parse_convert (parse, format, seeksegment.position,
+ if (rate >= 0)
+ start_ts = seeksegment.position;
+ else
+ start_ts = start;
+
+ if (seeksegment.stop == -1 && seeksegment.duration != -1)
+ seeksegment.stop = seeksegment.start + seeksegment.duration;
+
+ if (!gst_base_parse_convert (parse, format, start_ts,
GST_FORMAT_BYTES, &seekpos))
goto convert_failed;
if (!gst_base_parse_convert (parse, format, seeksegment.stop,
gst_pad_push_event (parse->srcpad, gst_event_ref (fevent));
gst_pad_push_event (parse->sinkpad, fevent);
gst_base_parse_clear_queues (parse);
- } else {
- /* keep track of our position */
- seeksegment.base = gst_segment_to_running_time (&seeksegment,
- seeksegment.format, parse->segment.position);
}
memcpy (&parse->segment, &seeksegment, sizeof (GstSegment));
return res;
/* ERRORS */
-negative_rate_pull_mode:
- {
- GST_FIXME_OBJECT (parse, "negative playback in pull mode needs fixing");
- res = FALSE;
- goto done;
- }
negative_rate:
{
GST_DEBUG_OBJECT (parse, "negative playback rates delegated upstream.");
}
}
-/* Checks if bitrates are available from upstream tags so that we don't
- * override them later
- */
static void
-gst_base_parse_handle_tag (GstBaseParse * parse, GstEvent * event)
+gst_base_parse_set_upstream_tags (GstBaseParse * parse, GstTagList * taglist)
{
- GstTagList *taglist = NULL;
- guint tmp;
-
- gst_event_parse_tag (event, &taglist);
-
- /* We only care about stream tags here */
- if (gst_tag_list_get_scope (taglist) != GST_TAG_SCOPE_STREAM)
+ if (taglist == parse->priv->upstream_tags)
return;
- if (gst_tag_list_get_uint (taglist, GST_TAG_MINIMUM_BITRATE, &tmp)) {
- GST_DEBUG_OBJECT (parse, "upstream min bitrate %d", tmp);
- parse->priv->post_min_bitrate = FALSE;
- }
- if (gst_tag_list_get_uint (taglist, GST_TAG_BITRATE, &tmp)) {
- GST_DEBUG_OBJECT (parse, "upstream avg bitrate %d", tmp);
- parse->priv->post_avg_bitrate = FALSE;
- }
- if (gst_tag_list_get_uint (taglist, GST_TAG_MAXIMUM_BITRATE, &tmp)) {
- GST_DEBUG_OBJECT (parse, "upstream max bitrate %d", tmp);
- parse->priv->post_max_bitrate = FALSE;
+ if (parse->priv->upstream_tags) {
+ gst_tag_list_unref (parse->priv->upstream_tags);
+ parse->priv->upstream_tags = NULL;
}
+
+ GST_INFO_OBJECT (parse, "upstream tags: %" GST_PTR_FORMAT, taglist);
+
+ if (taglist != NULL)
+ parse->priv->upstream_tags = gst_tag_list_ref (taglist);
+
+ gst_base_parse_check_bitrate_tags (parse);
}
#if 0
if (GST_CLOCK_TIME_IS_VALID (pts) && (parse->priv->prev_pts != pts))
parse->priv->prev_pts = parse->priv->next_pts = pts;
- if (GST_CLOCK_TIME_IS_VALID (dts) && (parse->priv->prev_dts != dts))
+ if (GST_CLOCK_TIME_IS_VALID (dts) && (parse->priv->prev_dts != dts)) {
parse->priv->prev_dts = parse->priv->next_dts = dts;
+ parse->priv->prev_dts_from_pts = FALSE;
+ }
+}
+
+/**
+ * gst_base_parse_merge_tags:
+ * @parse: a #GstBaseParse
+ * @tags: (allow-none): a #GstTagList to merge, or NULL to unset
+ * previously-set tags
+ * @mode: the #GstTagMergeMode to use, usually #GST_TAG_MERGE_REPLACE
+ *
+ * Sets the parser subclass's tags and how they should be merged with any
+ * upstream stream tags. This will override any tags previously-set
+ * with gst_base_parse_merge_tags().
+ *
+ * Note that this is provided for convenience, and the subclass is
+ * not required to use this and can still do tag handling on its own.
+ *
+ * Since: 1.6
+ */
+void
+gst_base_parse_merge_tags (GstBaseParse * parse, GstTagList * tags,
+ GstTagMergeMode mode)
+{
+ g_return_if_fail (GST_IS_BASE_PARSE (parse));
+ g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
+ g_return_if_fail (tags == NULL || mode != GST_TAG_MERGE_UNDEFINED);
+
+ GST_OBJECT_LOCK (parse);
+
+ if (tags != parse->priv->parser_tags) {
+ if (parse->priv->parser_tags) {
+ gst_tag_list_unref (parse->priv->parser_tags);
+ parse->priv->parser_tags = NULL;
+ parse->priv->parser_tags_merge_mode = GST_TAG_MERGE_APPEND;
+ }
+ if (tags) {
+ parse->priv->parser_tags = gst_tag_list_ref (tags);
+ parse->priv->parser_tags_merge_mode = mode;
+ }
+
+ GST_DEBUG_OBJECT (parse, "setting parser tags to %" GST_PTR_FORMAT
+ " (mode %d)", tags, parse->priv->parser_tags_merge_mode);
+
+ gst_base_parse_check_bitrate_tags (parse);
+ parse->priv->tags_changed = TRUE;
+ }
+
+ GST_OBJECT_UNLOCK (parse);
}
projects / platform / upstream / gstreamer.git / blobdiff