gstreamer/ext/amrwb/gstamrwbdec.c
Stefan Kost d337dda736 ext/amrwb/gstamrwbdec.c (gst_amrwbdec_debug, GST_CAT_DEFAULT, _do_init, gst_amrwbdec_base_init, gst_amrwbdec_class_in...
Original commit message from CVS:
* ext/amrwb/gstamrwbdec.c (gst_amrwbdec_debug, GST_CAT_DEFAULT,
_do_init, gst_amrwbdec_base_init, gst_amrwbdec_class_init):
* ext/amrwb/gstamrwbenc.c (gst_amrwbenc_debug, GST_CAT_DEFAULT,
_do_init, gst_amrwbenc_base_init, gst_amrwbenc_class_init):
* ext/amrwb/gstamrwbparse.c (gst_amrwbparse_debug, GST_CAT_DEFAULT,
_do_init, gst_amrwbparse_base_init, gst_amrwbparse_class_init):
First round of cleanups, that use GST_BOILERPLATE, GST_ELEMENT_DETAILS,
GST_DEBUG_FUNCPTR and add log-category.
2007-05-18 09:35:28 +00:00

297 lines
8.2 KiB
C

/* 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.
*/
/*
* gst-launch filesrc locationabc.amr ! audio/AMR-WB ! amrwbdec ! audioresample ! audioconvert ! alsasink
*/
#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);
#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)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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_template (gst_static_pad_template_get (&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_template (gst_static_pad_template_get (&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 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;
default:
ret = gst_pad_push_event (amrwbdec->srcpad, event);
break;
}
gst_object_unref (amrwbdec);
return ret;
}
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) {
GST_ELEMENT_ERROR (amrwbdec, STREAM, TYPE_NOT_FOUND, (NULL),
("Decoder is not initialized"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
amrwbdec->ts = GST_BUFFER_TIMESTAMP (buffer);
gst_adapter_push (amrwbdec->adapter, buffer);
while (TRUE) {
GstBuffer *out;
UWord8 *data;
Word16 block, mode;
if (gst_adapter_available (amrwbdec->adapter) < 1)
break;
data = (UWord8 *) gst_adapter_peek (amrwbdec->adapter, 1);
/* get size */
mode = (Word16) (data[0] >> 3) & 0x0F;
block = block_size[mode];
if (gst_adapter_available (amrwbdec->adapter) < block) {
break;
}
/* the library seems to write into the source data, hence
* the copy. */
data = (UWord8 *) gst_adapter_take (amrwbdec->adapter, block);
/* get output */
out = gst_buffer_new_and_alloc (sizeof (Word16) * L_FRAME16k);
GST_BUFFER_DURATION (out) = amrwbdec->duration;
GST_BUFFER_TIMESTAMP (out) = amrwbdec->ts;
if (amrwbdec->ts != -1)
amrwbdec->ts += GST_BUFFER_DURATION (out);
gst_buffer_set_caps (out, GST_PAD_CAPS (amrwbdec->srcpad));
/* decode */
D_IF_decode (amrwbdec->handle, data,
(Word16 *) GST_BUFFER_DATA (out), _good_frame);
g_free (data);
/* play */
ret = gst_pad_push (amrwbdec->srcpad, out);
}
done:
gst_object_unref (amrwbdec);
return ret;
}
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;
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;
}
}