diff options
Diffstat (limited to 'ext/amrwb/gstamrwbdec.c')
| -rw-r--r-- | ext/amrwb/gstamrwbdec.c | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/ext/amrwb/gstamrwbdec.c b/ext/amrwb/gstamrwbdec.c deleted file mode 100644 index 54e8a830..00000000 --- a/ext/amrwb/gstamrwbdec.c +++ /dev/null @@ -1,372 +0,0 @@ -/* GStreamer Adaptive Multi-Rate Narrow-Band (AMR-NB) plugin - * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.net> - * - * 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-amrwbdec - * @see_also: #GstAmrwbEnc, #GstAmrwbParse - * - * AMR wideband decoder based on the - * <ulink url="http://www.penguin.cz/~utx/amr">reference codec implementation</ulink>. - * - * <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 "gstamrwbdec.h" - -static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/AMR-WB, " - "rate = (int) 16000, " "channels = (int) 1") - ); - -static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/x-raw-int, " - "width = (int) 16, " - "depth = (int) 16, " - "signed = (boolean) TRUE, " - "endianness = (int) BYTE_ORDER, " - "rate = (int) 16000, " "channels = (int) 1") - ); - -GST_DEBUG_CATEGORY_STATIC (gst_amrwbdec_debug); -#define GST_CAT_DEFAULT gst_amrwbdec_debug - -extern const UWord8 block_size[]; - -static gboolean gst_amrwbdec_event (GstPad * pad, GstEvent * event); -static GstFlowReturn gst_amrwbdec_chain (GstPad * pad, GstBuffer * buffer); -static gboolean gst_amrwbdec_setcaps (GstPad * pad, GstCaps * caps); -static GstStateChangeReturn gst_amrwbdec_state_change (GstElement * element, - GstStateChange transition); - -static void gst_amrwbdec_finalize (GObject * object); - -#define _do_init(bla) \ - GST_DEBUG_CATEGORY_INIT (gst_amrwbdec_debug, "amrwbdec", 0, "AMR-WB audio decoder"); - -GST_BOILERPLATE_FULL (GstAmrwbDec, gst_amrwbdec, GstElement, GST_TYPE_ELEMENT, - _do_init); - -static void -gst_amrwbdec_base_init (gpointer klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - GstElementDetails details = GST_ELEMENT_DETAILS ("AMR-WB audio decoder", - "Codec/Decoder/Audio", - "Adaptive Multi-Rate Wideband audio decoder", - "Renato Araujo <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_amrwbdec_class_init (GstAmrwbDecClass * klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - object_class->finalize = gst_amrwbdec_finalize; - - element_class->change_state = GST_DEBUG_FUNCPTR (gst_amrwbdec_state_change); -} - -static void -gst_amrwbdec_init (GstAmrwbDec * amrwbdec, GstAmrwbDecClass * klass) -{ - /* create the sink pad */ - amrwbdec->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink"); - gst_pad_set_setcaps_function (amrwbdec->sinkpad, gst_amrwbdec_setcaps); - gst_pad_set_event_function (amrwbdec->sinkpad, gst_amrwbdec_event); - gst_pad_set_chain_function (amrwbdec->sinkpad, gst_amrwbdec_chain); - gst_element_add_pad (GST_ELEMENT (amrwbdec), amrwbdec->sinkpad); - - /* create the src pad */ - amrwbdec->srcpad = gst_pad_new_from_static_template (&src_template, "src"); - gst_pad_use_fixed_caps (amrwbdec->srcpad); - gst_element_add_pad (GST_ELEMENT (amrwbdec), amrwbdec->srcpad); - - amrwbdec->adapter = gst_adapter_new (); - - /* init rest */ - amrwbdec->handle = NULL; - amrwbdec->channels = 0; - amrwbdec->rate = 0; - amrwbdec->duration = 0; - amrwbdec->ts = -1; -} - -static void -gst_amrwbdec_finalize (GObject * object) -{ - GstAmrwbDec *amrwbdec; - - amrwbdec = GST_AMRWBDEC (object); - - gst_adapter_clear (amrwbdec->adapter); - g_object_unref (amrwbdec->adapter); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static gboolean -gst_amrwbdec_setcaps (GstPad * pad, GstCaps * caps) -{ - GstStructure *structure; - GstAmrwbDec *amrwbdec; - GstCaps *copy; - - amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); - - structure = gst_caps_get_structure (caps, 0); - - /* get channel count */ - gst_structure_get_int (structure, "channels", &amrwbdec->channels); - gst_structure_get_int (structure, "rate", &amrwbdec->rate); - - /* create reverse caps */ - copy = gst_caps_new_simple ("audio/x-raw-int", - "channels", G_TYPE_INT, amrwbdec->channels, - "width", G_TYPE_INT, 16, - "depth", G_TYPE_INT, 16, - "endianness", G_TYPE_INT, G_BYTE_ORDER, - "rate", G_TYPE_INT, amrwbdec->rate, "signed", G_TYPE_BOOLEAN, TRUE, NULL); - - amrwbdec->duration = gst_util_uint64_scale_int (GST_SECOND, L_FRAME16k, - amrwbdec->rate * amrwbdec->channels); - - gst_pad_set_caps (amrwbdec->srcpad, copy); - gst_caps_unref (copy); - - gst_object_unref (amrwbdec); - - return TRUE; -} - -static gboolean -gst_amrwbdec_event (GstPad * pad, GstEvent * event) -{ - GstAmrwbDec *amrwbdec; - gboolean ret = TRUE; - - amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_FLUSH_START: - ret = gst_pad_push_event (amrwbdec->srcpad, event); - break; - case GST_EVENT_FLUSH_STOP: - ret = gst_pad_push_event (amrwbdec->srcpad, event); - gst_adapter_clear (amrwbdec->adapter); - amrwbdec->ts = -1; - break; - case GST_EVENT_EOS: - gst_adapter_clear (amrwbdec->adapter); - ret = gst_pad_push_event (amrwbdec->srcpad, event); - break; - case GST_EVENT_NEWSEGMENT: - { - GstFormat format; - gdouble rate, arate; - gint64 start, stop, time; - gboolean update; - - gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format, - &start, &stop, &time); - - /* we need time for now */ - if (format != GST_FORMAT_TIME) - goto newseg_wrong_format; - - GST_DEBUG_OBJECT (amrwbdec, - "newsegment: update %d, rate %g, arate %g, start %" GST_TIME_FORMAT - ", stop %" GST_TIME_FORMAT ", time %" GST_TIME_FORMAT, - update, rate, arate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop), - GST_TIME_ARGS (time)); - - /* now configure the values */ - gst_segment_set_newsegment_full (&amrwbdec->segment, update, - rate, arate, format, start, stop, time); - ret = gst_pad_push_event (amrwbdec->srcpad, event); - } - break; - default: - ret = gst_pad_push_event (amrwbdec->srcpad, event); - break; - } -done: - gst_object_unref (amrwbdec); - - return ret; - - /* ERRORS */ -newseg_wrong_format: - { - GST_DEBUG_OBJECT (amrwbdec, "received non TIME newsegment"); - goto done; - } -} - -static GstFlowReturn -gst_amrwbdec_chain (GstPad * pad, GstBuffer * buffer) -{ - GstAmrwbDec *amrwbdec; - GstFlowReturn ret = GST_FLOW_OK; - - amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); - - if (amrwbdec->rate == 0 || amrwbdec->channels == 0) - goto not_negotiated; - - /* discontinuity, don't combine samples before and after the - * DISCONT */ - if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) { - gst_adapter_clear (amrwbdec->adapter); - amrwbdec->ts = -1; - amrwbdec->discont = TRUE; - } - - /* take latest timestamp, FIXME timestamp is the one of the - * first buffer in the adapter. */ - if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) - amrwbdec->ts = GST_BUFFER_TIMESTAMP (buffer); - - gst_adapter_push (amrwbdec->adapter, buffer); - - while (TRUE) { - GstBuffer *out; - const guint8 *data; - gint block, mode; - - /* need to peek data to get the size */ - if (gst_adapter_available (amrwbdec->adapter) < 1) - break; - data = gst_adapter_peek (amrwbdec->adapter, 1); - - /* get size */ - mode = (data[0] >> 3) & 0x0F; - block = block_size[mode]; - - GST_DEBUG_OBJECT (amrwbdec, "mode %d, block %d", mode, block); - - if (!block || gst_adapter_available (amrwbdec->adapter) < block) - break; - - /* the library seems to write into the source data, hence the copy. */ - data = gst_adapter_take (amrwbdec->adapter, block); - - /* get output */ - out = gst_buffer_new_and_alloc (sizeof (gint16) * L_FRAME16k); - - GST_BUFFER_DURATION (out) = amrwbdec->duration; - GST_BUFFER_TIMESTAMP (out) = amrwbdec->ts; - - if (amrwbdec->ts != -1) - amrwbdec->ts += amrwbdec->duration; - if (amrwbdec->discont) { - GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT); - amrwbdec->discont = FALSE; - } - - gst_buffer_set_caps (out, GST_PAD_CAPS (amrwbdec->srcpad)); - - /* decode */ - D_IF_decode (amrwbdec->handle, (UWord8 *) data, - (Word16 *) GST_BUFFER_DATA (out), _good_frame); - - g_free ((gpointer) data); - - /* send out */ - ret = gst_pad_push (amrwbdec->srcpad, out); - } - - gst_object_unref (amrwbdec); - return ret; - - /* ERRORS */ -not_negotiated: - { - GST_ELEMENT_ERROR (amrwbdec, STREAM, TYPE_NOT_FOUND, (NULL), - ("Decoder is not initialized")); - gst_object_unref (amrwbdec); - return GST_FLOW_NOT_NEGOTIATED; - } -} - -static GstStateChangeReturn -gst_amrwbdec_state_change (GstElement * element, GstStateChange transition) -{ - GstAmrwbDec *amrwbdec; - GstStateChangeReturn ret; - - amrwbdec = GST_AMRWBDEC (element); - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - if (!(amrwbdec->handle = D_IF_init ())) - goto init_failed; - break; - case GST_STATE_CHANGE_READY_TO_PAUSED: - gst_adapter_clear (amrwbdec->adapter); - amrwbdec->rate = 0; - amrwbdec->channels = 0; - amrwbdec->ts = -1; - amrwbdec->discont = TRUE; - gst_segment_init (&amrwbdec->segment, GST_FORMAT_TIME); - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_NULL: - D_IF_exit (amrwbdec->handle); - break; - default: - break; - } - - return ret; - - /* ERRORS */ -init_failed: - { - GST_ELEMENT_ERROR (amrwbdec, LIBRARY, INIT, (NULL), - ("Failed to open AMR Decoder")); - return GST_STATE_CHANGE_FAILURE; - } -} |