From 7f42b7856b8c2a1def893ba7d3955812d74f71b1 Mon Sep 17 00:00:00 2001 From: Stefan Kost Date: Thu, 13 Nov 2008 12:59:34 +0000 Subject: Add two new baseparse based parsers (aac and amr) from Bug #518857. Original commit message from CVS: * configure.ac: * gst/aacparse/Makefile.am: * gst/aacparse/gstaacparse.c: * gst/aacparse/gstaacparse.h: * gst/aacparse/gstbaseparse.c: * gst/aacparse/gstbaseparse.h: * gst/amrparse/Makefile.am: * gst/amrparse/gstamrparse.c: * gst/amrparse/gstamrparse.h: * gst/amrparse/gstbaseparse.c: * gst/amrparse/gstbaseparse.h: Add two new baseparse based parsers (aac and amr) from Bug #518857. --- gst/aacparse/gstbaseparse.h | 237 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 237 insertions(+) create mode 100644 gst/aacparse/gstbaseparse.h (limited to 'gst/aacparse/gstbaseparse.h') diff --git a/gst/aacparse/gstbaseparse.h b/gst/aacparse/gstbaseparse.h new file mode 100644 index 00000000..a2856cc7 --- /dev/null +++ b/gst/aacparse/gstbaseparse.h @@ -0,0 +1,237 @@ +/* GStreamer + * Copyright (C) 2008 Nokia Corporation. All rights reserved. + * + * Contact: Stefan Kost + * + * 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_BASE_PARSE_H__ +#define __GST_BASE_PARSE_H__ + +#include +#include + +G_BEGIN_DECLS + +#define GST_TYPE_BASE_PARSE (gst_base_parse_get_type()) +#define GST_BASE_PARSE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_PARSE,GstBaseParse)) +#define GST_BASE_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_PARSE,GstBaseParseClass)) +#define GST_BASE_PARSE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_PARSE,GstBaseParseClass)) +#define GST_IS_BASE_PARSE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_PARSE)) +#define GST_IS_BASE_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_PARSE)) +#define GST_BASE_PARSE_CAST(obj) ((GstBaseParse *)(obj)) + +/** + * GST_BASE_PARSE_SINK_NAME: + * + * the name of the templates for the sink pad + */ +#define GST_BASE_PARSE_SINK_NAME "sink" +/** + * GST_BASE_PARSE_SRC_NAME: + * + * the name of the templates for the source pad + */ +#define GST_BASE_PARSE_SRC_NAME "src" + +/** + * GST_BASE_PARSE_SRC_PAD: + * @obj: base parse instance + * + * Gives the pointer to the source #GstPad object of the element. + * + * Since: 0.10.x + */ +#define GST_BASE_PARSE_SRC_PAD(obj) (GST_BASE_PARSE_CAST (obj)->srcpad) + +/** + * GST_BASE_PARSE_SINK_PAD: + * @obj: base parse instance + * + * Gives the pointer to the sink #GstPad object of the element. + * + * Since: 0.10.x + */ +#define GST_BASE_PARSE_SINK_PAD(obj) (GST_BASE_PARSE_CAST (obj)->sinkpad) + +/** + * GST_BASE_PARSE_FLOW_DROPPED: + * + * A #GstFlowReturn that can be returned from parse_frame to + * indicate that no output buffer was generated. + * + * Since: 0.10.x + */ +#define GST_BASE_PARSE_FLOW_DROPPED GST_FLOW_CUSTOM_SUCCESS + +/** + * GST_BASE_PARSE_LOCK: + * @obj: base parse instance + * + * Obtain a lock to protect the parse function from concurrent access. + * + * Since: 0.10.x + */ +#define GST_BASE_PARSE_LOCK(obj) g_mutex_lock (GST_BASE_PARSE_CAST (obj)->parse_lock) + +/** + * GST_BASE_PARSE_UNLOCK: + * @obj: base parse instance + * + * Release the lock that protects the parse function from concurrent access. + * + * Since: 0.10.x + */ +#define GST_BASE_PARSE_UNLOCK(obj) g_mutex_unlock (GST_BASE_PARSE_CAST (obj)->parse_lock) + +typedef struct _GstBaseParse GstBaseParse; +typedef struct _GstBaseParseClass GstBaseParseClass; +typedef struct _GstBaseParsePrivate GstBaseParsePrivate; +typedef struct _GstBaseParseClassPrivate GstBaseParseClassPrivate; + +/** + * GstBaseParse: + * @element: the parent element. + * + * The opaque #GstBaseParse data structure. + */ +struct _GstBaseParse { + GstElement element; + GstAdapter *adapter; + + /*< protected >*/ + /* source and sink pads */ + GstPad *sinkpad; + GstPad *srcpad; + + /* MT-protected (with STREAM_LOCK) */ + GstSegment segment; + + /* Newsegment event to be sent after SEEK */ + GstEvent *pending_segment; + + /* Segment event that closes the running segment prior to SEEK */ + GstEvent *close_segment; + + /* Caps nego done already? */ + gboolean negotiated; + + GMutex *parse_lock; + + /*< private >*/ + gpointer _gst_reserved[GST_PADDING_LARGE]; + GstBaseParsePrivate *priv; +}; + +/** + * GstBaseParseClass: + * @start: Optional. + * Called when the element starts processing. + * Allows opening external resources. + * @stop: Optional. + * Called when the element stops processing. + * Allows closing external resources. + * @set_sink_caps: allows the subclass to be notified of the actual caps set. + * @check_valid_frame: Check if the given piece of data contains a valid + * frame. + * @parse_frame: Parse the already checked frame. Subclass need to + * set the buffer timestamp, duration, caps and possibly + * other necessary metadata. This is called with srcpad's + * STREAM_LOCK held. + * @convert: Optional. + * Convert between formats. + * @find_frame: Optional. + * Finds a frame. Gets a position passed and should return + * TRUE and the offset in bytes where this position is. + * Will only be called in pull mode and the subclass can pull + * whatever it wants from upstream. If not implemented, + * the base class will implement it by calling + * @check_valid_frame and @parse_frame to find the wanted + * frame and build a seek table. + * @event: Optional. + * Event handler on the sink pad. This function should return + * TRUE if the event was handled and can be dropped. + * @src_event: Optional. + * Event handler on the source pad. Should return TRUE + * if the event was handled and can be dropped. + * @is_seekable: Optional. + * Subclass can override this if it wants to control the + * seekability of the stream. Otherwise the element assumes + * that stream is always seekable. + * + * Subclasses can override any of the available virtual methods or not, as + * needed. At minimum @check_valid_frame and @parse_frame needs to be + * overridden. + */ +struct _GstBaseParseClass { + GstElementClass parent_class; + + /*< public >*/ + /* virtual methods for subclasses */ + + gboolean (*start) (GstBaseParse *parse); + + gboolean (*stop) (GstBaseParse *parse); + + gboolean (*set_sink_caps) (GstBaseParse *parse, + GstCaps *caps); + + gboolean (*check_valid_frame) (GstBaseParse *parse, + GstBuffer *buffer, + guint *framesize, + gint *skipsize); + + GstFlowReturn (*parse_frame) (GstBaseParse *parse, + GstBuffer *buffer); + + gboolean (*convert) (GstBaseParse * parse, + GstFormat src_format, + gint64 src_value, + GstFormat dest_format, + gint64 * dest_value); + + gboolean (*find_frame) (GstBaseParse *parse, + GstFormat src_format, + gint64 src_value, + gint64 * dest_value); + + gboolean (*event) (GstBaseParse *parse, + GstEvent *event); + + gboolean (*src_event) (GstBaseParse *parse, + GstEvent *event); + + gboolean (*is_seekable) (GstBaseParse *parse); + + /*< private >*/ + gpointer _gst_reserved[GST_PADDING_LARGE]; + GstBaseParseClassPrivate *priv; +}; + +GType gst_base_parse_get_type (void); + + +void gst_base_parse_set_duration (GstBaseParse *parse, + GstFormat fmt, + gint64 duration); + +void gst_base_parse_set_min_frame_size (GstBaseParse *parse, + guint min_size); + +G_END_DECLS + +#endif /* __GST_BASE_PARSE_H__ */ -- cgit v1.2.1