diff options
Diffstat (limited to 'ext/amrwb/gstamrwbparse.c')
| -rw-r--r-- | ext/amrwb/gstamrwbparse.c | 767 |
1 files changed, 0 insertions, 767 deletions
diff --git a/ext/amrwb/gstamrwbparse.c b/ext/amrwb/gstamrwbparse.c deleted file mode 100644 index bcee1704..00000000 --- a/ext/amrwb/gstamrwbparse.c +++ /dev/null @@ -1,767 +0,0 @@ -/* GStreamer Adaptive Multi-Rate Wide-Band (AMR-WB) plugin - * Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br> - * - * 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:element-amrwbparse - * @see_also: #GstAmrwbDec, #GstAmrwbEnc - * - * This is an AMR wideband parser. - * - * <refsect2> - * <title>Example launch line</title> - * |[ - * gst-launch filesrc location=abc.amr ! amrwbparse ! amrwbdec ! audioresample ! audioconvert ! alsasink - * ]| - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <string.h> -#include "gstamrwbparse.h" - -static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/AMR-WB, " - "rate = (int) 16000, " "channels = (int) 1") - ); - -static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/x-amr-wb-sh") - ); - -GST_DEBUG_CATEGORY_STATIC (gst_amrwbparse_debug); -#define GST_CAT_DEFAULT gst_amrwbparse_debug - -extern const UWord8 block_size[]; - -#define AMRWB_HEADER_SIZE 9 -#define AMRWB_HEADER_STR "#!AMR-WB\n" - -static void gst_amrwbparse_base_init (gpointer klass); -static void gst_amrwbparse_class_init (GstAmrwbParseClass * klass); -static void gst_amrwbparse_init (GstAmrwbParse * amrwbparse, - GstAmrwbParseClass * klass); - -static const GstQueryType *gst_amrwbparse_querytypes (GstPad * pad); -static gboolean gst_amrwbparse_query (GstPad * pad, GstQuery * query); - -static gboolean gst_amrwbparse_sink_event (GstPad * pad, GstEvent * event); -static gboolean gst_amrwbparse_src_event (GstPad * pad, GstEvent * event); -static GstFlowReturn gst_amrwbparse_chain (GstPad * pad, GstBuffer * buffer); -static void gst_amrwbparse_loop (GstPad * pad); -static gboolean gst_amrwbparse_sink_activate (GstPad * sinkpad); -static gboolean gst_amrwbparse_sink_activate_pull (GstPad * sinkpad, - gboolean active); -static gboolean gst_amrwbparse_sink_activate_push (GstPad * sinkpad, - gboolean active); -static GstStateChangeReturn gst_amrwbparse_state_change (GstElement * element, - GstStateChange transition); - -static void gst_amrwbparse_finalize (GObject * object); - -#define _do_init(bla) \ - GST_DEBUG_CATEGORY_INIT (gst_amrwbparse_debug, "amrwbparse", 0, "AMR-WB audio stream parser"); - -GST_BOILERPLATE_FULL (GstAmrwbParse, gst_amrwbparse, GstElement, - GST_TYPE_ELEMENT, _do_init); - -static void -gst_amrwbparse_base_init (gpointer klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - GstElementDetails details = GST_ELEMENT_DETAILS ("AMR-WB audio stream parser", - "Codec/Parser/Audio", - "Adaptive Multi-Rate WideBand audio parser", - "Renato Filho <renato.filho@indt.org.br>"); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&sink_template)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&src_template)); - - gst_element_class_set_details (element_class, &details); - -} - -static void -gst_amrwbparse_class_init (GstAmrwbParseClass * klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - object_class->finalize = gst_amrwbparse_finalize; - - element_class->change_state = GST_DEBUG_FUNCPTR (gst_amrwbparse_state_change); -} - -static void -gst_amrwbparse_init (GstAmrwbParse * amrwbparse, GstAmrwbParseClass * klass) -{ - /* create the sink pad */ - amrwbparse->sinkpad = - gst_pad_new_from_static_template (&sink_template, "sink"); - gst_pad_set_chain_function (amrwbparse->sinkpad, - GST_DEBUG_FUNCPTR (gst_amrwbparse_chain)); - gst_pad_set_event_function (amrwbparse->sinkpad, - GST_DEBUG_FUNCPTR (gst_amrwbparse_sink_event)); - gst_pad_set_activate_function (amrwbparse->sinkpad, - gst_amrwbparse_sink_activate); - gst_pad_set_activatepull_function (amrwbparse->sinkpad, - gst_amrwbparse_sink_activate_pull); - gst_pad_set_activatepush_function (amrwbparse->sinkpad, - gst_amrwbparse_sink_activate_push); - gst_element_add_pad (GST_ELEMENT (amrwbparse), amrwbparse->sinkpad); - - /* create the src pad */ - amrwbparse->srcpad = gst_pad_new_from_static_template (&src_template, "src"); - gst_pad_set_event_function (amrwbparse->srcpad, - GST_DEBUG_FUNCPTR (gst_amrwbparse_src_event)); - gst_pad_set_query_function (amrwbparse->srcpad, - GST_DEBUG_FUNCPTR (gst_amrwbparse_query)); - gst_pad_set_query_type_function (amrwbparse->srcpad, - GST_DEBUG_FUNCPTR (gst_amrwbparse_querytypes)); - gst_element_add_pad (GST_ELEMENT (amrwbparse), amrwbparse->srcpad); - - amrwbparse->adapter = gst_adapter_new (); - - /* init rest */ - amrwbparse->ts = 0; -} - -static void -gst_amrwbparse_finalize (GObject * object) -{ - GstAmrwbParse *amrwbparse; - - amrwbparse = GST_AMRWBPARSE (object); - - gst_adapter_clear (amrwbparse->adapter); - g_object_unref (amrwbparse->adapter); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - - -static const GstQueryType * -gst_amrwbparse_querytypes (GstPad * pad) -{ - static const GstQueryType list[] = { - GST_QUERY_POSITION, - GST_QUERY_DURATION, - 0 - }; - - return list; -} - -static gboolean -gst_amrwbparse_query (GstPad * pad, GstQuery * query) -{ - GstAmrwbParse *amrwbparse; - gboolean res = TRUE; - - amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad)); - - switch (GST_QUERY_TYPE (query)) { - case GST_QUERY_POSITION: - { - GstFormat format; - gint64 cur; - - gst_query_parse_position (query, &format, NULL); - - if (format != GST_FORMAT_TIME) { - res = FALSE; - break; - } - - cur = amrwbparse->ts; - - gst_query_set_position (query, GST_FORMAT_TIME, cur); - res = TRUE; - break; - } - case GST_QUERY_DURATION: - { - GstFormat format; - gint64 tot; - GstPad *peer; - - gst_query_parse_duration (query, &format, NULL); - - if (format != GST_FORMAT_TIME) { - res = FALSE; - break; - } - - tot = -1; - res = FALSE; - - peer = gst_pad_get_peer (amrwbparse->sinkpad); - if (peer) { - GstFormat pformat; - gint64 ptot; - - pformat = GST_FORMAT_BYTES; - res = gst_pad_query_duration (peer, &pformat, &ptot); - if (res && amrwbparse->block) { - tot = gst_util_uint64_scale_int (ptot, 20 * GST_MSECOND, - amrwbparse->block); - } - gst_object_unref (GST_OBJECT (peer)); - } - gst_query_set_duration (query, GST_FORMAT_TIME, tot); - res = TRUE; - break; - } - default: - res = gst_pad_query_default (pad, query); - break; - } - - gst_object_unref (amrwbparse); - return res; -} - - -static gboolean -gst_amrwbparse_handle_pull_seek (GstAmrwbParse * amrwbparse, GstPad * pad, - GstEvent * event) -{ - GstFormat format; - gdouble rate; - GstSeekFlags flags; - GstSeekType cur_type, stop_type; - gint64 cur, stop; - gint64 byte_cur = -1, byte_stop = -1; - gboolean flush; - - gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, - &stop_type, &stop); - - GST_DEBUG_OBJECT (amrwbparse, "Performing seek to %" GST_TIME_FORMAT, - GST_TIME_ARGS (cur)); - - /* For any format other than TIME, see if upstream handles - * it directly or fail. For TIME, try upstream, but do it ourselves if - * it fails upstream */ - if (format != GST_FORMAT_TIME) { - return gst_pad_push_event (amrwbparse->sinkpad, event); - } else { - if (gst_pad_push_event (amrwbparse->sinkpad, event)) - return TRUE; - } - - flush = flags & GST_SEEK_FLAG_FLUSH; - - /* send flush start */ - if (flush) - gst_pad_push_event (amrwbparse->sinkpad, gst_event_new_flush_start ()); - /* we only handle FLUSH seeks at the moment */ - else - return FALSE; - - /* grab streaming lock, this should eventually be possible, either - * because the task is paused or our streaming thread stopped - * because our peer is flushing. */ - GST_PAD_STREAM_LOCK (amrwbparse->sinkpad); - - /* Convert the TIME to the appropriate BYTE position at which to resume - * decoding. */ - cur = cur / (20 * GST_MSECOND) * (20 * GST_MSECOND); - if (cur != -1) - byte_cur = amrwbparse->block * (cur / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE; - if (stop != -1) - byte_stop = - amrwbparse->block * (stop / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE; - amrwbparse->offset = byte_cur; - amrwbparse->ts = cur; - - GST_DEBUG_OBJECT (amrwbparse, "Seeking to byte range %" G_GINT64_FORMAT - " to %" G_GINT64_FORMAT, byte_cur, cur); - - /* and prepare to continue streaming */ - /* send flush stop, peer will accept data and events again. We - * are not yet providing data as we still have the STREAM_LOCK. */ - gst_pad_push_event (amrwbparse->sinkpad, gst_event_new_flush_stop ()); - gst_pad_push_event (amrwbparse->srcpad, gst_event_new_new_segment (FALSE, - rate, format, cur, -1, cur)); - - /* and restart the task in case it got paused explicitely or by - * the FLUSH_START event we pushed out. */ - gst_pad_start_task (amrwbparse->sinkpad, - (GstTaskFunction) gst_amrwbparse_loop, amrwbparse->sinkpad); - - /* and release the lock again so we can continue streaming */ - GST_PAD_STREAM_UNLOCK (amrwbparse->sinkpad); - - return TRUE; -} - -static gboolean -gst_amrwbparse_handle_push_seek (GstAmrwbParse * amrwbparse, GstPad * pad, - GstEvent * event) -{ - GstFormat format; - gdouble rate; - GstSeekFlags flags; - GstSeekType cur_type, stop_type; - gint64 cur, stop; - gint64 byte_cur = -1, byte_stop = -1; - - gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, - &stop_type, &stop); - - GST_DEBUG_OBJECT (amrwbparse, "Performing seek to %" GST_TIME_FORMAT, - GST_TIME_ARGS (cur)); - - /* For any format other than TIME, see if upstream handles - * it directly or fail. For TIME, try upstream, but do it ourselves if - * it fails upstream */ - if (format != GST_FORMAT_TIME) { - return gst_pad_push_event (amrwbparse->sinkpad, event); - } else { - if (gst_pad_push_event (amrwbparse->sinkpad, event)) - return TRUE; - } - - /* Convert the TIME to the appropriate BYTE position at which to resume - * decoding. */ - cur = cur / (20 * GST_MSECOND) * (20 * GST_MSECOND); - if (cur != -1) - byte_cur = amrwbparse->block * (cur / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE; - if (stop != -1) - byte_stop = - amrwbparse->block * (stop / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE; - amrwbparse->ts = cur; - - GST_DEBUG_OBJECT (amrwbparse, "Seeking to byte range %" G_GINT64_FORMAT - " to %" G_GINT64_FORMAT, byte_cur, byte_stop); - - /* Send BYTE based seek upstream */ - event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, - byte_cur, stop_type, byte_stop); - - return gst_pad_push_event (amrwbparse->sinkpad, event); -} - -static gboolean -gst_amrwbparse_src_event (GstPad * pad, GstEvent * event) -{ - GstAmrwbParse *amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad)); - gboolean res; - - GST_DEBUG_OBJECT (amrwbparse, "handling event %d", GST_EVENT_TYPE (event)); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_SEEK: - if (amrwbparse->seek_handler) - res = amrwbparse->seek_handler (amrwbparse, pad, event); - else - res = FALSE; - break; - default: - res = gst_pad_push_event (amrwbparse->sinkpad, event); - break; - } - gst_object_unref (amrwbparse); - - return res; -} - - -/* - * Data reading. - */ -static gboolean -gst_amrwbparse_sink_event (GstPad * pad, GstEvent * event) -{ - GstAmrwbParse *amrwbparse; - gboolean res; - - amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad)); - - GST_LOG ("handling event %d", GST_EVENT_TYPE (event)); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_FLUSH_START: - res = gst_pad_push_event (amrwbparse->srcpad, event); - break; - case GST_EVENT_FLUSH_STOP: - gst_adapter_clear (amrwbparse->adapter); - gst_segment_init (&amrwbparse->segment, GST_FORMAT_TIME); - res = gst_pad_push_event (amrwbparse->srcpad, event); - break; - case GST_EVENT_EOS: - res = gst_pad_push_event (amrwbparse->srcpad, event); - break; - case GST_EVENT_NEWSEGMENT: - { - /* eat for now, we send a newsegment at start with infinite - * duration. */ - gst_event_unref (event); - res = TRUE; - break; - } - default: - res = gst_pad_push_event (amrwbparse->srcpad, event); - break; - } - gst_object_unref (amrwbparse); - - return res; -} - -/* streaming mode */ -static GstFlowReturn -gst_amrwbparse_chain (GstPad * pad, GstBuffer * buffer) -{ - GstAmrwbParse *amrwbparse; - GstFlowReturn res = GST_FLOW_OK; - gint mode; - const guint8 *data; - GstBuffer *out; - GstClockTime timestamp; - - amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad)); - - timestamp = GST_BUFFER_TIMESTAMP (buffer); - if (GST_CLOCK_TIME_IS_VALID (timestamp)) { - GST_DEBUG_OBJECT (amrwbparse, "Lock on timestamp %" GST_TIME_FORMAT, - GST_TIME_ARGS (timestamp)); - amrwbparse->ts = timestamp; - } - - gst_adapter_push (amrwbparse->adapter, buffer); - - /* init */ - if (amrwbparse->need_header) { - GstEvent *segev; - GstCaps *caps; - - if (gst_adapter_available (amrwbparse->adapter) < AMRWB_HEADER_SIZE) - goto done; - - data = gst_adapter_peek (amrwbparse->adapter, AMRWB_HEADER_SIZE); - if (memcmp (data, AMRWB_HEADER_STR, AMRWB_HEADER_SIZE) != 0) - goto done; - - gst_adapter_flush (amrwbparse->adapter, AMRWB_HEADER_SIZE); - - amrwbparse->need_header = FALSE; - - caps = gst_caps_new_simple ("audio/AMR-WB", - "rate", G_TYPE_INT, 16000, "channels", G_TYPE_INT, 1, NULL); - gst_pad_set_caps (amrwbparse->srcpad, caps); - gst_caps_unref (caps); - - GST_DEBUG_OBJECT (amrwbparse, "Sending first segment"); - segev = gst_event_new_new_segment_full (FALSE, 1.0, 1.0, - GST_FORMAT_TIME, 0, -1, 0); - - gst_pad_push_event (amrwbparse->srcpad, segev); - } - - while (TRUE) { - if (gst_adapter_available (amrwbparse->adapter) < 1) - break; - - data = gst_adapter_peek (amrwbparse->adapter, 1); - - /* get size */ - mode = (data[0] >> 3) & 0x0F; - amrwbparse->block = block_size[mode] + 1; /* add one for the mode */ - - if (gst_adapter_available (amrwbparse->adapter) < amrwbparse->block) - break; - - out = gst_buffer_new_and_alloc (amrwbparse->block); - - data = gst_adapter_peek (amrwbparse->adapter, amrwbparse->block); - memcpy (GST_BUFFER_DATA (out), data, amrwbparse->block); - - /* timestamp, all constants that won't overflow */ - GST_BUFFER_DURATION (out) = GST_SECOND * L_FRAME16k / 16000; - GST_BUFFER_TIMESTAMP (out) = amrwbparse->ts; - if (GST_CLOCK_TIME_IS_VALID (amrwbparse->ts)) - amrwbparse->ts += GST_BUFFER_DURATION (out); - - gst_buffer_set_caps (out, GST_PAD_CAPS (amrwbparse->srcpad)); - - GST_DEBUG_OBJECT (amrwbparse, "Pushing %d bytes of data", - amrwbparse->block); - - res = gst_pad_push (amrwbparse->srcpad, out); - - gst_adapter_flush (amrwbparse->adapter, amrwbparse->block); - } -done: - - gst_object_unref (amrwbparse); - return res; -} - -static gboolean -gst_amrwbparse_pull_header (GstAmrwbParse * amrwbparse) -{ - GstBuffer *buffer; - GstFlowReturn ret; - guint8 *data; - gint size; - - ret = gst_pad_pull_range (amrwbparse->sinkpad, G_GUINT64_CONSTANT (0), - AMRWB_HEADER_SIZE, &buffer); - if (ret != GST_FLOW_OK) - return FALSE; - - data = GST_BUFFER_DATA (buffer); - size = GST_BUFFER_SIZE (buffer); - - if (size < AMRWB_HEADER_SIZE) - goto not_enough; - - if (memcmp (data, AMRWB_HEADER_STR, AMRWB_HEADER_SIZE)) - goto no_header; - - gst_buffer_unref (buffer); - - amrwbparse->offset = AMRWB_HEADER_SIZE; - return TRUE; - -not_enough: - { - gst_buffer_unref (buffer); - return FALSE; - } -no_header: - { - gst_buffer_unref (buffer); - return FALSE; - } -} - -/* random access mode, could just read a fixed size buffer and push it to - * the chain function but we don't... */ -static void -gst_amrwbparse_loop (GstPad * pad) -{ - GstAmrwbParse *amrwbparse; - GstBuffer *buffer; - guint8 *data; - gint size; - gint block, mode; - GstFlowReturn ret = GST_FLOW_OK; - - amrwbparse = GST_AMRWBPARSE (GST_PAD_PARENT (pad)); - - /* init */ - if (G_UNLIKELY (amrwbparse->need_header)) { - GstCaps *caps; - - if (!gst_amrwbparse_pull_header (amrwbparse)) { - GST_ELEMENT_ERROR (amrwbparse, STREAM, WRONG_TYPE, (NULL), (NULL)); - GST_LOG_OBJECT (amrwbparse, "could not read header"); - goto need_pause; - } - - caps = gst_caps_new_simple ("audio/AMR-WB", - "rate", G_TYPE_INT, 16000, "channels", G_TYPE_INT, 1, NULL); - gst_pad_set_caps (amrwbparse->srcpad, caps); - gst_caps_unref (caps); - - GST_DEBUG_OBJECT (amrwbparse, "Sending newsegment event"); - gst_pad_push_event (amrwbparse->srcpad, - gst_event_new_new_segment_full (FALSE, 1.0, 1.0, - GST_FORMAT_TIME, 0, -1, 0)); - - amrwbparse->need_header = FALSE; - } - - ret = - gst_pad_pull_range (amrwbparse->sinkpad, amrwbparse->offset, 1, &buffer); - - if (ret == GST_FLOW_UNEXPECTED) - goto eos; - else if (ret != GST_FLOW_OK) - goto need_pause; - - data = GST_BUFFER_DATA (buffer); - size = GST_BUFFER_SIZE (buffer); - - /* EOS */ - if (size < 1) { - gst_buffer_unref (buffer); - goto eos; - } - - /* get size */ - mode = (data[0] >> 3) & 0x0F; - block = block_size[mode]; /* add one for the mode */ - - gst_buffer_unref (buffer); - - ret = gst_pad_pull_range (amrwbparse->sinkpad, - amrwbparse->offset, block, &buffer); - - if (ret == GST_FLOW_UNEXPECTED) - goto eos; - else if (ret != GST_FLOW_OK) - goto need_pause; - - amrwbparse->offset += block; - - /* output */ - GST_BUFFER_DURATION (buffer) = GST_SECOND * L_FRAME16k / 16000; - GST_BUFFER_TIMESTAMP (buffer) = amrwbparse->ts; - - gst_buffer_set_caps (buffer, - (GstCaps *) gst_pad_get_pad_template_caps (amrwbparse->srcpad)); - - ret = gst_pad_push (amrwbparse->srcpad, buffer); - - if (ret != GST_FLOW_OK) { - GST_DEBUG_OBJECT (amrwbparse, "Flow: %s", gst_flow_get_name (ret)); - if (GST_FLOW_IS_FATAL (ret)) { - GST_ELEMENT_ERROR (amrwbparse, STREAM, FAILED, (NULL), /* _("Internal data flow error.")), */ - ("streaming task paused, reason: %s", gst_flow_get_name (ret))); - gst_pad_push_event (pad, gst_event_new_eos ()); - } - goto need_pause; - } - - amrwbparse->ts += GST_BUFFER_DURATION (buffer); - - return; - -need_pause: - { - GST_LOG_OBJECT (amrwbparse, "pausing task"); - gst_pad_pause_task (pad); - return; - } -eos: - { - GST_LOG_OBJECT (amrwbparse, "pausing task %d", ret); - gst_pad_push_event (amrwbparse->srcpad, gst_event_new_eos ()); - gst_pad_pause_task (pad); - return; - } -} - -static gboolean -gst_amrwbparse_sink_activate (GstPad * sinkpad) -{ - gboolean result = FALSE; - GstAmrwbParse *amrwbparse; - - amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad)); - - if (gst_pad_check_pull_range (sinkpad)) { - GST_DEBUG ("Trying to activate in pull mode"); - amrwbparse->seekable = TRUE; - amrwbparse->ts = 0; - result = gst_pad_activate_pull (sinkpad, TRUE); - } else { - GST_DEBUG ("Try to activate in push mode"); - amrwbparse->seekable = FALSE; - result = gst_pad_activate_push (sinkpad, TRUE); - } - - gst_object_unref (amrwbparse); - return result; -} - - - -static gboolean -gst_amrwbparse_sink_activate_push (GstPad * sinkpad, gboolean active) -{ - GstAmrwbParse *amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad)); - - if (active) { - amrwbparse->seek_handler = gst_amrwbparse_handle_push_seek; - } else { - amrwbparse->seek_handler = NULL; - } - - gst_object_unref (amrwbparse); - return TRUE; -} - -static gboolean -gst_amrwbparse_sink_activate_pull (GstPad * sinkpad, gboolean active) -{ - gboolean result; - GstAmrwbParse *amrwbparse; - - amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad)); - if (active) { - amrwbparse->seek_handler = gst_amrwbparse_handle_pull_seek; - result = gst_pad_start_task (sinkpad, - (GstTaskFunction) gst_amrwbparse_loop, sinkpad); - } else { - amrwbparse->seek_handler = NULL; - result = gst_pad_stop_task (sinkpad); - } - - gst_object_unref (amrwbparse); - return result; -} - - -static GstStateChangeReturn -gst_amrwbparse_state_change (GstElement * element, GstStateChange transition) -{ - GstAmrwbParse *amrwbparse; - GstStateChangeReturn ret; - - amrwbparse = GST_AMRWBPARSE (element); - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - break; - case GST_STATE_CHANGE_READY_TO_PAUSED: - amrwbparse->need_header = TRUE; - amrwbparse->ts = -1; - amrwbparse->block = 0; - gst_segment_init (&amrwbparse->segment, GST_FORMAT_TIME); - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - break; - case GST_STATE_CHANGE_READY_TO_NULL: - break; - default: - break; - } - - return ret; -} |