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Add support for AMR-NB (mobile phone audio format; #155163, #163286).

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Original commit message from CVS:
* configure.ac:
* ext/Makefile.am:
* ext/amrnb/Makefile.am:
* ext/amrnb/amrnb.c: (plugin_init):
* ext/amrnb/amrnbdec.c: (gst_amrnbdec_get_type),
(gst_amrnbdec_base_init), (gst_amrnbdec_class_init),
(gst_amrnbdec_init), (gst_amrnbdec_link), (gst_amrnbdec_chain),
(gst_amrnbdec_state_change):
* ext/amrnb/amrnbdec.h:
* ext/amrnb/amrnbparse.c: (gst_amrnbparse_get_type),
(gst_amrnbparse_base_init), (gst_amrnbparse_class_init),
(gst_amrnbparse_init), (gst_amrnbparse_formats),
(gst_amrnbparse_querytypes), (gst_amrnbparse_query),
(gst_amrnbparse_handle_event), (gst_amrnbparse_reserve),
(gst_amrnbparse_loop), (gst_amrnbparse_state_change):
* ext/amrnb/amrnbparse.h:
Add support for AMR-NB (mobile phone audio format; #155163, #163286).
* gst/typefind/gsttypefindfunctions.c: (plugin_init):
Add AMR-NB/-WB raw formats.
* ext/alsa/gstalsa.c: (gst_alsa_link):
Keep valid time when changing format.
* gst/qtdemux/qtdemux.c: (gst_qtdemux_loop_header),
(qtdemux_parse_trak):
Add some more format-specific options (#140141, #143555, #155163).
This commit is contained in:
Ronald S. Bultje 2005-01-28 10:36:12 +00:00
parent e4bcc8faef
commit 56675a8221
9 changed files with 771 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
ChangeLog
View file

@ -1,3 +1,30 @@
2005-01-28 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* configure.ac:
* ext/Makefile.am:
* ext/amrnb/Makefile.am:
* ext/amrnb/amrnb.c: (plugin_init):
* ext/amrnb/amrnbdec.c: (gst_amrnbdec_get_type),
(gst_amrnbdec_base_init), (gst_amrnbdec_class_init),
(gst_amrnbdec_init), (gst_amrnbdec_link), (gst_amrnbdec_chain),
(gst_amrnbdec_state_change):
* ext/amrnb/amrnbdec.h:
* ext/amrnb/amrnbparse.c: (gst_amrnbparse_get_type),
(gst_amrnbparse_base_init), (gst_amrnbparse_class_init),
(gst_amrnbparse_init), (gst_amrnbparse_formats),
(gst_amrnbparse_querytypes), (gst_amrnbparse_query),
(gst_amrnbparse_handle_event), (gst_amrnbparse_reserve),
(gst_amrnbparse_loop), (gst_amrnbparse_state_change):
* ext/amrnb/amrnbparse.h:
Add support for AMR-NB (mobile phone audio format; #155163, #163286).
* gst/typefind/gsttypefindfunctions.c: (plugin_init):
Add AMR-NB/-WB raw formats.
* ext/alsa/gstalsa.c: (gst_alsa_link):
Keep valid time when changing format.
* gst/qtdemux/qtdemux.c: (gst_qtdemux_loop_header),
(qtdemux_parse_trak):
Add some more format-specific options (#140141, #143555, #155163).
2005-01-28 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/matroska/matroska-demux.c:

11
configure.ac
View file

@ -778,6 +778,16 @@ GST_CHECK_FEATURE(ALSA, [alsa plug-ins], gstalsa, [
])
])
dnl *** AMR-NB ***
translit(dnm, m, l) AM_CONDITIONAL(USE_AMRNB, true)
GST_CHECK_FEATURE(AMRNB, [AMR-NB], amrnbdec amrnbenc, [
GST_CHECK_LIBHEADER(AMRNB, amrnb,
Decoder_Interface_init, -lm,
amrnb/interf_dec.h,
AMRNB_LIBS="-lamrnb -lm"
AC_SUBST(AMRNB_LIBS))
])
dnl *** arts ***
dnl if mcopidl can't be found there's no use in compiling it
AC_CHECK_PROG(MCOPIDL, mcopidl, yes, no)
@ -2021,6 +2031,7 @@ ext/Makefile
ext/a52dec/Makefile
ext/aalib/Makefile
ext/alsa/Makefile
ext/amrnb/Makefile
ext/arts/Makefile
ext/artsd/Makefile
ext/audiofile/Makefile

9
ext/Makefile.am
View file

@ -16,6 +16,12 @@ else
ALSA_DIR=
endif
if USE_AMRNB
AMRNB_DIR=amrnb
else
AMRNB=
endif
if USE_ARTS
ARTS_DIR=arts
else
@ -398,6 +404,8 @@ SUBDIRS=\
$(A52DEC_DIR) \
$(AALIB_DIR) \
$(ALSA_DIR) \
$(AMRNB_DIR) \
$(AMRWB_DIR) \
$(ARTS_DIR) \
$(ARTSC_DIR) \
$(AUDIOFILE_DIR) \
@ -464,6 +472,7 @@ DIST_SUBDIRS=\
a52dec \
aalib \
alsa \
amrnb \
arts \
artsd \
audiofile \

14
ext/amrnb/Makefile.am Normal file
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@ -0,0 +1,14 @@
plugin_LTLIBRARIES = libgstamrnb.la
libgstamrnb_la_SOURCES = \
amrnb.c \
amrnbdec.c \
amrnbparse.c
libgstamrnb_la_CFLAGS = $(GST_CFLAGS) $(AMRNB_CFLAGS)
libgstamrnb_la_LIBADD = $(AMRNB_LIBS)
libgstamrnb_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = \
amrnbdec.h \
amrnbparse.h

44
ext/amrnb/amrnb.c Normal file
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@ -0,0 +1,44 @@
/* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "amrnbdec.h"
#include "amrnbparse.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_library_load ("gstbytestream"))
return FALSE;
return gst_element_register (plugin, "amrnbdec",
GST_RANK_PRIMARY, GST_TYPE_AMRNBDEC) &&
gst_element_register (plugin, "amrnbparse",
GST_RANK_PRIMARY, GST_TYPE_AMRNBPARSE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"amrnb",
"Adaptive Multi-Rate Narrow-Band",
plugin_init, VERSION, GST_LICENSE_UNKNOWN, GST_PACKAGE, GST_ORIGIN);

222
ext/amrnb/amrnbdec.c Normal file
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@ -0,0 +1,222 @@
/* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "amrnbdec.h"
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-amr-nb, "
"rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ]")
);
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) [ 1000, 96000 ]," "channels = (int) [ 1, 2 ]")
);
static void gst_amrnbdec_base_init (GstAmrnbDecClass * klass);
static void gst_amrnbdec_class_init (GstAmrnbDecClass * klass);
static void gst_amrnbdec_init (GstAmrnbDec * amrnbdec);
static void gst_amrnbdec_chain (GstPad * pad, GstData * data);
static GstPadLinkReturn gst_amrnbdec_link (GstPad * pad, const GstCaps * caps);
static GstElementStateReturn gst_amrnbdec_state_change (GstElement * element);
static GstElementClass *parent_class = NULL;
GType
gst_amrnbdec_get_type (void)
{
static GType amrnbdec_type = 0;
if (!amrnbdec_type) {
static const GTypeInfo amrnbdec_info = {
sizeof (GstAmrnbDecClass),
(GBaseInitFunc) gst_amrnbdec_base_init,
NULL,
(GClassInitFunc) gst_amrnbdec_class_init,
NULL,
NULL,
sizeof (GstAmrnbDec),
0,
(GInstanceInitFunc) gst_amrnbdec_init,
};
amrnbdec_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstAmrnbDec", &amrnbdec_info, 0);
}
return amrnbdec_type;
}
static void
gst_amrnbdec_base_init (GstAmrnbDecClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstElementDetails gst_amrnbdec_details = {
"AMR-NB decoder",
"Codec/Decoder/Audio",
"Adaptive Multi-Rate Narrow-Band audio decoder",
"Ronald Bultje <rbultje@ronald.bitfreak.net>"
};
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, &gst_amrnbdec_details);
}
static void
gst_amrnbdec_class_init (GstAmrnbDecClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
element_class->change_state = gst_amrnbdec_state_change;
}
static void
gst_amrnbdec_init (GstAmrnbDec * amrnbdec)
{
/* create the sink pad */
amrnbdec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
"sink");
gst_pad_set_link_function (amrnbdec->sinkpad, gst_amrnbdec_link);
gst_pad_set_chain_function (amrnbdec->sinkpad, gst_amrnbdec_chain);
gst_element_add_pad (GST_ELEMENT (amrnbdec), amrnbdec->sinkpad);
/* create the src pad */
amrnbdec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
"src");
gst_pad_use_explicit_caps (amrnbdec->srcpad);
gst_element_add_pad (GST_ELEMENT (amrnbdec), amrnbdec->srcpad);
/* init rest */
amrnbdec->handle = NULL;
amrnbdec->channels = 0;
amrnbdec->rate = 0;
amrnbdec->ts = 0;
}
static GstPadLinkReturn
gst_amrnbdec_link (GstPad * pad, const GstCaps * caps)
{
GstStructure *structure = gst_caps_get_structure (caps, 0);
GstAmrnbDec *amrnbdec = GST_AMRNBDEC (gst_pad_get_parent (pad));
GstCaps *copy;
/* get channel count */
gst_structure_get_int (structure, "channels", &amrnbdec->channels);
gst_structure_get_int (structure, "rate", &amrnbdec->rate);
/* create reverse caps */
copy = gst_caps_new_simple ("audio/x-raw-int",
"channels", G_TYPE_INT, amrnbdec->channels,
"width", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"rate", G_TYPE_INT, amrnbdec->rate, "signed", G_TYPE_BOOLEAN, TRUE, NULL);
if (!gst_pad_set_explicit_caps (amrnbdec->srcpad, copy))
return GST_PAD_LINK_REFUSED;
return GST_PAD_LINK_OK;
}
static void
gst_amrnbdec_chain (GstPad * pad, GstData * in_data)
{
const gint block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5,
0, 0, 0, 0, 0, 0, 0
};
GstAmrnbDec *amrnbdec = GST_AMRNBDEC (GST_OBJECT_PARENT (pad));
GstBuffer *buf = gst_buffer_copy_on_write (in_data), *out;
guint8 *data = GST_BUFFER_DATA (buf);
gint size = GST_BUFFER_SIZE (buf), block, mode;
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf))
amrnbdec->ts = GST_BUFFER_TIMESTAMP (buf);
while (size >= 1) {
/* get size */
mode = (data[0] >> 3) & 0x0F;
block = block_size[mode] + 1;
if (size < block)
break;
/* get output */
out = gst_buffer_new_and_alloc (160 * 2);
GST_BUFFER_DURATION (out) = GST_SECOND * 160 /
(amrnbdec->rate * amrnbdec->channels);
GST_BUFFER_TIMESTAMP (out) = amrnbdec->ts;
amrnbdec->ts += GST_BUFFER_DURATION (out);
/* decode */
Decoder_Interface_Decode (amrnbdec->handle, data,
(short *) GST_BUFFER_DATA (out), 0);
data += block;
size -= block;
/* play */
gst_pad_push (amrnbdec->srcpad, GST_DATA (out));
}
gst_buffer_unref (buf);
}
static GstElementStateReturn
gst_amrnbdec_state_change (GstElement * element)
{
GstAmrnbDec *amrnbdec = GST_AMRNBDEC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!(amrnbdec->handle = Decoder_Interface_init ()))
return GST_STATE_FAILURE;
break;
case GST_STATE_PAUSED_TO_READY:
amrnbdec->ts = 0;
break;
case GST_STATE_READY_TO_NULL:
Decoder_Interface_exit (amrnbdec->handle);
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

64
ext/amrnb/amrnbdec.h Normal file
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@ -0,0 +1,64 @@
/* 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.
*/
#ifndef __GST_AMRNBDEC_H__
#define __GST_AMRNBDEC_H__
#include <gst/gst.h>
#include <amrnb/interf_dec.h>
G_BEGIN_DECLS
#define GST_TYPE_AMRNBDEC \
(gst_amrnbdec_get_type())
#define GST_AMRNBDEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AMRNBDEC, GstAmrnbDec))
#define GST_AMRNBDEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AMRNBDEC, GstAmrnbDec))
#define GST_IS_AMRNBDEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AMRNBDEC))
#define GST_IS_AMRNBDEC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AMRNBDEC))
typedef struct _GstAmrnbDec GstAmrnbDec;
typedef struct _GstAmrnbDecClass GstAmrnbDecClass;
struct _GstAmrnbDec {
GstElement element;
/* pads */
GstPad *sinkpad, *srcpad;
guint64 ts;
/* library handle */
void *handle;
/* output settings */
gint channels, rate;
};
struct _GstAmrnbDecClass {
GstElementClass parent_class;
};
GType gst_amrnbdec_get_type (void);
G_END_DECLS
#endif /* __GST_AMRNBDEC_H__ */

321
ext/amrnb/amrnbparse.c Normal file
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@ -0,0 +1,321 @@
/* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "amrnbparse.h"
GST_DEBUG_CATEGORY_STATIC (amrnbparse_debug);
#define GST_CAT_DEFAULT amrnbparse_debug
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-amr-nb, "
"rate = (int) 8000, " "channels = (int) 1")
);
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-amr-nb-sh")
);
static void gst_amrnbparse_base_init (GstAmrnbParseClass * klass);
static void gst_amrnbparse_class_init (GstAmrnbParseClass * klass);
static void gst_amrnbparse_init (GstAmrnbParse * amrnbparse);
static const GstFormat *gst_amrnbparse_formats (GstPad * pad);
static const GstQueryType *gst_amrnbparse_querytypes (GstPad * pad);
static gboolean gst_amrnbparse_query (GstPad * pad, GstQueryType type,
GstFormat * fmt, gint64 * value);
static void gst_amrnbparse_loop (GstElement * element);
static GstElementStateReturn gst_amrnbparse_state_change (GstElement * element);
static GstElementClass *parent_class = NULL;
GType
gst_amrnbparse_get_type (void)
{
static GType amrnbparse_type = 0;
if (!amrnbparse_type) {
static const GTypeInfo amrnbparse_info = {
sizeof (GstAmrnbParseClass),
(GBaseInitFunc) gst_amrnbparse_base_init,
NULL,
(GClassInitFunc) gst_amrnbparse_class_init,
NULL,
NULL,
sizeof (GstAmrnbParse),
0,
(GInstanceInitFunc) gst_amrnbparse_init,
};
amrnbparse_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstAmrnbParse", &amrnbparse_info, 0);
}
return amrnbparse_type;
}
static void
gst_amrnbparse_base_init (GstAmrnbParseClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstElementDetails gst_amrnbparse_details = {
"AMR-NB parser",
"Codec/Parser/Audio",
"Adaptive Multi-Rate Narrow-Band audio parser",
"Ronald Bultje <rbultje@ronald.bitfreak.net>"
};
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, &gst_amrnbparse_details);
}
static void
gst_amrnbparse_class_init (GstAmrnbParseClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
element_class->change_state = gst_amrnbparse_state_change;
GST_DEBUG_CATEGORY_INIT (amrnbparse_debug,
"amrnbparse", 0, "AMR-NB stream parsing");
}
static void
gst_amrnbparse_init (GstAmrnbParse * amrnbparse)
{
GST_FLAG_SET (amrnbparse, GST_ELEMENT_EVENT_AWARE);
/* create the sink pad */
amrnbparse->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
"sink");
gst_element_add_pad (GST_ELEMENT (amrnbparse), amrnbparse->sinkpad);
/* create the src pad */
amrnbparse->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
"src");
gst_pad_set_query_function (amrnbparse->srcpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_query));
gst_pad_set_query_type_function (amrnbparse->srcpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_querytypes));
gst_pad_set_formats_function (amrnbparse->srcpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_formats));
gst_element_add_pad (GST_ELEMENT (amrnbparse), amrnbparse->srcpad);
gst_element_set_loop_function (GST_ELEMENT (amrnbparse), gst_amrnbparse_loop);
/* init rest */
amrnbparse->ts = 0;
}
/*
* Position querying.
*/
static const GstFormat *
gst_amrnbparse_formats (GstPad * pad)
{
static const GstFormat list[] = {
GST_FORMAT_TIME,
0
};
return list;
}
static const GstQueryType *
gst_amrnbparse_querytypes (GstPad * pad)
{
static const GstQueryType list[] = {
GST_QUERY_POSITION,
GST_QUERY_TOTAL,
0
};
return list;
}
static gboolean
gst_amrnbparse_query (GstPad * pad, GstQueryType type,
GstFormat * fmt, gint64 * value)
{
GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (gst_pad_get_parent (pad));
gboolean res = TRUE;
if (*fmt != GST_FORMAT_TIME)
return FALSE;
switch (type) {
case GST_QUERY_POSITION:
*value = amrnbparse->ts;
break;
case GST_QUERY_TOTAL:{
gint64 pos = gst_bytestream_tell (amrnbparse->bs),
tot = gst_bytestream_length (amrnbparse->bs);
*value = amrnbparse->ts * ((gdouble) tot / pos);
break;
}
default:
res = FALSE;
break;
}
return res;
}
/*
* Data reading.
*/
static gboolean
gst_amrnbparse_handle_event (GstAmrnbParse * amrnbparse, GstEvent * event)
{
gboolean res;
if (!event) {
GST_ELEMENT_ERROR (amrnbparse, RESOURCE, READ, (NULL), (NULL));
return FALSE;
}
GST_LOG ("handling event %d", GST_EVENT_TYPE (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
case GST_EVENT_INTERRUPT:
res = FALSE;
break;
case GST_EVENT_DISCONTINUOUS:
default:
res = TRUE;
break;
}
gst_pad_event_default (amrnbparse->sinkpad, event);
return res;
}
static guint8 *
gst_amrnbparse_reserve (GstAmrnbParse * amrnbparse, gint size)
{
gint read;
guint8 *data;
GST_DEBUG ("Trying to read %d bytes", size);
do {
if ((read = gst_bytestream_peek_bytes (amrnbparse->bs,
&data, size)) != size) {
GstEvent *event;
guint32 avail;
gst_bytestream_get_status (amrnbparse->bs, &avail, &event);
if (!gst_amrnbparse_handle_event (amrnbparse, event))
return NULL;
}
} while (read < size);
GST_DEBUG ("Read %d bytes of data", read);
return data;
}
static void
gst_amrnbparse_loop (GstElement * element)
{
const gint block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5,
0, 0, 0, 0, 0, 0, 0
};
GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (element);
GstBuffer *buf;
guint8 *data;
gint block, mode, read;
if (!(data = gst_amrnbparse_reserve (amrnbparse, 1)))
return;
/* init */
if (amrnbparse->ts == 0 && data[0] == '#') {
if (!(data = gst_amrnbparse_reserve (amrnbparse, 6)))
return;
if (!memcmp (data, "#!AMR", 5)) {
GST_LOG ("Found header");
gst_bytestream_flush_fast (amrnbparse->bs, 5);
data += 5;
}
}
/* get size */
mode = (data[0] >> 3) & 0x0F;
block = block_size[mode] + 1;
if (!gst_amrnbparse_reserve (amrnbparse, block))
return;
read = gst_bytestream_read (amrnbparse->bs, &buf, block);
g_assert (read == block);
/* output */
GST_BUFFER_DURATION (buf) = GST_SECOND * 160 / 8000;
GST_BUFFER_TIMESTAMP (buf) = amrnbparse->ts;
amrnbparse->ts += GST_BUFFER_DURATION (buf);
GST_DEBUG ("Pushing %d bytes of data", block);
gst_pad_push (amrnbparse->srcpad, GST_DATA (buf));
}
static GstElementStateReturn
gst_amrnbparse_state_change (GstElement * element)
{
GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!(amrnbparse->bs = gst_bytestream_new (amrnbparse->sinkpad)))
return GST_STATE_FAILURE;
break;
case GST_STATE_PAUSED_TO_READY:
amrnbparse->ts = 0;
break;
case GST_STATE_READY_TO_NULL:
gst_bytestream_destroy (amrnbparse->bs);
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

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ext/amrnb/amrnbparse.h Normal file
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/* 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.
*/
#ifndef __GST_AMRNBPARSE_H__
#define __GST_AMRNBPARSE_H__
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
G_BEGIN_DECLS
#define GST_TYPE_AMRNBPARSE \
(gst_amrnbparse_get_type())
#define GST_AMRNBPARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AMRNBPARSE, GstAmrnbParse))
#define GST_AMRNBPARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AMRNBPARSE, GstAmrnbParse))
#define GST_IS_AMRNBPARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AMRNBPARSE))
#define GST_IS_AMRNBPARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AMRNBPARSE))
typedef struct _GstAmrnbParse GstAmrnbParse;
typedef struct _GstAmrnbParseClass GstAmrnbParseClass;
struct _GstAmrnbParse {
GstElement element;
/* pads */
GstPad *sinkpad, *srcpad;
GstByteStream *bs;
guint64 ts;
};
struct _GstAmrnbParseClass {
GstElementClass parent_class;
};
GType gst_amrnbparse_get_type (void);
G_END_DECLS
#endif /* __GST_AMRNBPARSE_H__ */