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ext/amrnb/: Ported AMR decoder/parse.

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Original commit message from CVS:
* ext/amrnb/Makefile.am:
* ext/amrnb/amrnb.c: (plugin_init):
* ext/amrnb/amrnbdec.c: (gst_amrnbdec_init),
(gst_amrnbdec_setcaps), (gst_amrnbdec_chain),
(gst_amrnbdec_state_change):
* ext/amrnb/amrnbdec.h:
* ext/amrnb/amrnbenc.c: (gst_amrnbenc_get_type),
(gst_amrnbenc_base_init), (gst_amrnbenc_class_init),
(gst_amrnbenc_init), (gst_amrnbenc_finalize),
(gst_amrnbenc_setcaps), (gst_amrnbenc_chain),
(gst_amrnbenc_state_change):
* ext/amrnb/amrnbenc.h:
* ext/amrnb/amrnbparse.c: (gst_amrnbparse_init),
(gst_amrnbparse_query), (gst_amrnbparse_event),
(gst_amrnbparse_chain), (gst_amrnbparse_read_header),
(gst_amrnbparse_loop), (gst_amrnbparse_sink_activate),
(gst_amrnbparse_state_change):
* ext/amrnb/amrnbparse.h:
Ported AMR decoder/parse.
Added AMR encoder.
This commit is contained in:
Wim Taymans 2005-05-18 16:51:46 +00:00
parent e7d3ced2e8
commit e41644a080
9 changed files with 772 additions and 140 deletions
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23
ChangeLog
View file

@ -1,3 +1,26 @@
2005-05-18 Wim Taymans <wim@fluendo.com>
* ext/amrnb/Makefile.am:
* ext/amrnb/amrnb.c: (plugin_init):
* ext/amrnb/amrnbdec.c: (gst_amrnbdec_init),
(gst_amrnbdec_setcaps), (gst_amrnbdec_chain),
(gst_amrnbdec_state_change):
* ext/amrnb/amrnbdec.h:
* ext/amrnb/amrnbenc.c: (gst_amrnbenc_get_type),
(gst_amrnbenc_base_init), (gst_amrnbenc_class_init),
(gst_amrnbenc_init), (gst_amrnbenc_finalize),
(gst_amrnbenc_setcaps), (gst_amrnbenc_chain),
(gst_amrnbenc_state_change):
* ext/amrnb/amrnbenc.h:
* ext/amrnb/amrnbparse.c: (gst_amrnbparse_init),
(gst_amrnbparse_query), (gst_amrnbparse_event),
(gst_amrnbparse_chain), (gst_amrnbparse_read_header),
(gst_amrnbparse_loop), (gst_amrnbparse_sink_activate),
(gst_amrnbparse_state_change):
* ext/amrnb/amrnbparse.h:
Ported AMR decoder/parse.
Added AMR encoder.
2005-05-18 Wim Taymans <wim@fluendo.com>
* configure.ac:

4
ext/amrnb/Makefile.am
View file

@ -3,12 +3,14 @@ plugin_LTLIBRARIES = libgstamrnb.la
libgstamrnb_la_SOURCES = \
amrnb.c \
amrnbdec.c \
amrnbenc.c \
amrnbparse.c
libgstamrnb_la_CFLAGS = $(GST_CFLAGS) $(AMRNB_CFLAGS)
libgstamrnb_la_LIBADD = $(AMRNB_LIBS)
libgstamrnb_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstamrnb_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(GST_BASE_LIBS)
noinst_HEADERS = \
amrnbdec.h \
amrnbenc.h \
amrnbparse.h

8
ext/amrnb/amrnb.c
View file

@ -22,18 +22,18 @@
#endif
#include "amrnbdec.h"
#include "amrnbenc.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_RANK_PRIMARY, GST_TYPE_AMRNBPARSE) &&
gst_element_register (plugin, "amrnbenc",
GST_RANK_NONE, GST_TYPE_AMRNBENC);
}

119
ext/amrnb/amrnbdec.c
View file

@ -27,7 +27,7 @@ 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 ]")
"rate = (int) 8000, " "channels = (int) 1")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
@ -38,15 +38,19 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
"depth = (int) 16, "
"signed = (boolean) TRUE, "
"endianness = (int) BYTE_ORDER, "
"rate = (int) [ 1000, 96000 ]," "channels = (int) [ 1, 2 ]")
"rate = (int) 8000," "channels = (int) 1")
);
static const gint block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5,
0, 0, 0, 0, 0, 0, 0
};
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 GstFlowReturn gst_amrnbdec_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_amrnbdec_setcaps (GstPad * pad, GstCaps * caps);
static GstElementStateReturn gst_amrnbdec_state_change (GstElement * element);
static GstElementClass *parent_class = NULL;
@ -112,7 +116,7 @@ gst_amrnbdec_init (GstAmrnbDec * amrnbdec)
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_setcaps_function (amrnbdec->sinkpad, gst_amrnbdec_setcaps);
gst_pad_set_chain_function (amrnbdec->sinkpad, gst_amrnbdec_chain);
gst_element_add_pad (GST_ELEMENT (amrnbdec), amrnbdec->sinkpad);
@ -120,9 +124,11 @@ gst_amrnbdec_init (GstAmrnbDec * amrnbdec)
amrnbdec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
"src");
gst_pad_use_explicit_caps (amrnbdec->srcpad);
gst_pad_use_fixed_caps (amrnbdec->srcpad);
gst_element_add_pad (GST_ELEMENT (amrnbdec), amrnbdec->srcpad);
amrnbdec->adapter = gst_adapter_new ();
/* init rest */
amrnbdec->handle = NULL;
amrnbdec->channels = 0;
@ -130,13 +136,17 @@ gst_amrnbdec_init (GstAmrnbDec * amrnbdec)
amrnbdec->ts = 0;
}
static GstPadLinkReturn
gst_amrnbdec_link (GstPad * pad, const GstCaps * caps)
static gboolean
gst_amrnbdec_setcaps (GstPad * pad, GstCaps * caps)
{
GstStructure *structure = gst_caps_get_structure (caps, 0);
GstAmrnbDec *amrnbdec = GST_AMRNBDEC (gst_pad_get_parent (pad));
GstStructure *structure;
GstAmrnbDec *amrnbdec;
GstCaps *copy;
amrnbdec = GST_AMRNBDEC (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
/* get channel count */
gst_structure_get_int (structure, "channels", &amrnbdec->channels);
gst_structure_get_int (structure, "rate", &amrnbdec->rate);
@ -148,32 +158,49 @@ gst_amrnbdec_link (GstPad * pad, const GstCaps * caps)
"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;
gst_pad_set_caps (amrnbdec->srcpad, copy);
gst_caps_unref (copy);
return TRUE;
}
static void
gst_amrnbdec_chain (GstPad * pad, GstData * in_data)
static GstFlowReturn
gst_amrnbdec_chain (GstPad * pad, GstBuffer * buffer)
{
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;
GstAmrnbDec *amrnbdec;
GstFlowReturn ret;
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf))
amrnbdec->ts = GST_BUFFER_TIMESTAMP (buf);
amrnbdec = GST_AMRNBDEC (GST_PAD_PARENT (pad));
GST_STREAM_LOCK (pad);
if (amrnbdec->rate == 0 || amrnbdec->channels == 0)
goto not_negotiated;
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
amrnbdec->ts = GST_BUFFER_TIMESTAMP (buffer);
gst_adapter_push (amrnbdec->adapter, buffer);
ret = GST_FLOW_OK;
while (TRUE) {
GstBuffer *out;
guint8 *data;
gint block, mode;
if (gst_adapter_available (amrnbdec->adapter) < 1)
break;
data = (guint8 *) gst_adapter_peek (amrnbdec->adapter, 1);
while (size >= 1) {
/* get size */
mode = (data[0] >> 3) & 0x0F;
block = block_size[mode] + 1;
if (size < block)
if (gst_adapter_available (amrnbdec->adapter) < block)
break;
data = (guint8 *) gst_adapter_peek (amrnbdec->adapter, block);
/* get output */
out = gst_buffer_new_and_alloc (160 * 2);
@ -181,33 +208,54 @@ gst_amrnbdec_chain (GstPad * pad, GstData * in_data)
(amrnbdec->rate * amrnbdec->channels);
GST_BUFFER_TIMESTAMP (out) = amrnbdec->ts;
amrnbdec->ts += GST_BUFFER_DURATION (out);
gst_buffer_set_caps (out, GST_RPAD_CAPS (amrnbdec->srcpad));
/* decode */
Decoder_Interface_Decode (amrnbdec->handle, data,
(short *) GST_BUFFER_DATA (out), 0);
data += block;
size -= block;
gst_adapter_flush (amrnbdec->adapter, block);
/* play */
gst_pad_push (amrnbdec->srcpad, GST_DATA (out));
ret = gst_pad_push (amrnbdec->srcpad, out);
}
GST_STREAM_UNLOCK (pad);
gst_buffer_unref (buf);
return ret;
not_negotiated:
{
GST_STREAM_UNLOCK (pad);
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstElementStateReturn
gst_amrnbdec_state_change (GstElement * element)
{
GstAmrnbDec *amrnbdec = GST_AMRNBDEC (element);
GstAmrnbDec *amrnbdec;
GstElementStateReturn ret;
gint transition;
switch (GST_STATE_TRANSITION (element)) {
amrnbdec = GST_AMRNBDEC (element);
transition = GST_STATE_TRANSITION (element);
switch (transition) {
case GST_STATE_NULL_TO_READY:
if (!(amrnbdec->handle = Decoder_Interface_init ()))
return GST_STATE_FAILURE;
break;
case GST_STATE_PAUSED_TO_READY:
case GST_STATE_READY_TO_PAUSED:
gst_adapter_clear (amrnbdec->adapter);
amrnbdec->ts = 0;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
switch (transition) {
case GST_STATE_READY_TO_NULL:
Decoder_Interface_exit (amrnbdec->handle);
break;
@ -215,8 +263,5 @@ gst_amrnbdec_state_change (GstElement * element)
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
return ret;
}

3
ext/amrnb/amrnbdec.h
View file

@ -21,6 +21,7 @@
#define __GST_AMRNBDEC_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <amrnb/interf_dec.h>
G_BEGIN_DECLS
@ -46,6 +47,8 @@ struct _GstAmrnbDec {
GstPad *sinkpad, *srcpad;
guint64 ts;
GstAdapter *adapter;
/* library handle */
void *handle;

278
ext/amrnb/amrnbenc.c Normal file
View file

@ -0,0 +1,278 @@
/* 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 "amrnbenc.h"
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
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) 8000," "channels = (int) 1")
);
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 void gst_amrnbenc_base_init (GstAmrnbEncClass * klass);
static void gst_amrnbenc_class_init (GstAmrnbEncClass * klass);
static void gst_amrnbenc_init (GstAmrnbEnc * amrnbenc);
static void gst_amrnbenc_finalize (GObject * object);
static GstFlowReturn gst_amrnbenc_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_amrnbenc_setcaps (GstPad * pad, GstCaps * caps);
static GstElementStateReturn gst_amrnbenc_state_change (GstElement * element);
static GstElementClass *parent_class = NULL;
GType
gst_amrnbenc_get_type (void)
{
static GType amrnbenc_type = 0;
if (!amrnbenc_type) {
static const GTypeInfo amrnbenc_info = {
sizeof (GstAmrnbEncClass),
(GBaseInitFunc) gst_amrnbenc_base_init,
NULL,
(GClassInitFunc) gst_amrnbenc_class_init,
NULL,
NULL,
sizeof (GstAmrnbEnc),
0,
(GInstanceInitFunc) gst_amrnbenc_init,
};
amrnbenc_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstAmrnbEnc", &amrnbenc_info, 0);
}
return amrnbenc_type;
}
static void
gst_amrnbenc_base_init (GstAmrnbEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstElementDetails gst_amrnbenc_details = {
"AMR-NB decoder",
"Codec/Decoder/Audio",
"Adaptive Multi-Rate Narrow-Band audio encoder",
"Ronald Bultje <rbultje@ronald.bitfreak.net>, "
"Wim Taymans <wim@fluendo.com>"
};
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_amrnbenc_details);
}
static void
gst_amrnbenc_class_init (GstAmrnbEncClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
object_class->finalize = gst_amrnbenc_finalize;
element_class->change_state = gst_amrnbenc_state_change;
}
static void
gst_amrnbenc_init (GstAmrnbEnc * amrnbenc)
{
/* create the sink pad */
amrnbenc->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
"sink");
gst_pad_set_setcaps_function (amrnbenc->sinkpad, gst_amrnbenc_setcaps);
gst_pad_set_chain_function (amrnbenc->sinkpad, gst_amrnbenc_chain);
gst_element_add_pad (GST_ELEMENT (amrnbenc), amrnbenc->sinkpad);
/* create the src pad */
amrnbenc->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
"src");
gst_pad_use_fixed_caps (amrnbenc->srcpad);
gst_element_add_pad (GST_ELEMENT (amrnbenc), amrnbenc->srcpad);
amrnbenc->adapter = gst_adapter_new ();
/* init rest */
amrnbenc->handle = NULL;
amrnbenc->channels = 0;
amrnbenc->rate = 0;
amrnbenc->ts = 0;
}
static void
gst_amrnbenc_finalize (GObject * object)
{
GstAmrnbEnc *amrnbenc;
amrnbenc = GST_AMRNBENC (object);
g_object_unref (G_OBJECT (amrnbenc->adapter));
amrnbenc->adapter = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_amrnbenc_setcaps (GstPad * pad, GstCaps * caps)
{
GstStructure *structure;
GstAmrnbEnc *amrnbenc;
GstCaps *copy;
amrnbenc = GST_AMRNBENC (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
/* get channel count */
gst_structure_get_int (structure, "channels", &amrnbenc->channels);
gst_structure_get_int (structure, "rate", &amrnbenc->rate);
/* this is not wrong but will sound bad */
if (amrnbenc->channels != 1) {
g_warning ("amrnbdec is only optimized for mono channels");
}
if (amrnbenc->rate != 8000) {
g_warning ("amrnbdec is only optimized for 8000 Hz samplerate");
}
/* create reverse caps */
copy = gst_caps_new_simple ("audio/x-amr-nb",
"channels", G_TYPE_INT, amrnbenc->channels,
"rate", G_TYPE_INT, amrnbenc->rate, NULL);
gst_pad_set_caps (amrnbenc->srcpad, copy);
gst_caps_unref (copy);
return TRUE;
}
static GstFlowReturn
gst_amrnbenc_chain (GstPad * pad, GstBuffer * buffer)
{
GstAmrnbEnc *amrnbenc;
GstFlowReturn ret;
amrnbenc = GST_AMRNBENC (GST_PAD_PARENT (pad));
GST_STREAM_LOCK (pad);
if (amrnbenc->rate == 0 || amrnbenc->channels == 0)
goto not_negotiated;
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
amrnbenc->ts = GST_BUFFER_TIMESTAMP (buffer);
ret = GST_FLOW_OK;
gst_adapter_push (amrnbenc->adapter, buffer);
/* Collect samples until we have enough for an output frame */
while (gst_adapter_available (amrnbenc->adapter) >= 320) {
GstBuffer *out;
guint8 *data;
gint outsize;
/* get output, max size is 32 */
out = gst_buffer_new_and_alloc (32);
GST_BUFFER_DURATION (out) = GST_SECOND * 160 /
(amrnbenc->rate * amrnbenc->channels);
GST_BUFFER_TIMESTAMP (out) = amrnbenc->ts;
amrnbenc->ts += GST_BUFFER_DURATION (out);
gst_buffer_set_caps (out, GST_RPAD_CAPS (amrnbenc->srcpad));
data = (guint8 *) gst_adapter_peek (amrnbenc->adapter, 320);
/* decode */
outsize = Encoder_Interface_Encode (amrnbenc->handle, MR122, (short *) data,
(guint8 *) GST_BUFFER_DATA (out), 0);
gst_adapter_flush (amrnbenc->adapter, 320);
GST_BUFFER_SIZE (out) = outsize;
/* play */
ret = gst_pad_push (amrnbenc->srcpad, out);
}
GST_STREAM_UNLOCK (pad);
return ret;
not_negotiated:
{
GST_STREAM_UNLOCK (pad);
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstElementStateReturn
gst_amrnbenc_state_change (GstElement * element)
{
GstAmrnbEnc *amrnbenc;
GstElementStateReturn ret;
gint transition;
amrnbenc = GST_AMRNBENC (element);
transition = GST_STATE_TRANSITION (element);
switch (transition) {
case GST_STATE_NULL_TO_READY:
if (!(amrnbenc->handle = Encoder_Interface_init (0)))
return GST_STATE_FAILURE;
break;
case GST_STATE_READY_TO_PAUSED:
amrnbenc->ts = 0;
gst_adapter_clear (amrnbenc->adapter);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
switch (transition) {
case GST_STATE_READY_TO_NULL:
Encoder_Interface_exit (amrnbenc->handle);
break;
default:
break;
}
return ret;
}

67
ext/amrnb/amrnbenc.h Normal file
View file

@ -0,0 +1,67 @@
/* 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_AMRNBENC_H__
#define __GST_AMRNBENC_H__
#include <gst/gst.h>
#include <amrnb/interf_enc.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
#define GST_TYPE_AMRNBENC \
(gst_amrnbenc_get_type())
#define GST_AMRNBENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AMRNBENC, GstAmrnbEnc))
#define GST_AMRNBENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AMRNBENC, GstAmrnbEnc))
#define GST_IS_AMRNBENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AMRNBENC))
#define GST_IS_AMRNBENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AMRNBENC))
typedef struct _GstAmrnbEnc GstAmrnbEnc;
typedef struct _GstAmrnbEncClass GstAmrnbEncClass;
struct _GstAmrnbEnc {
GstElement element;
/* pads */
GstPad *sinkpad, *srcpad;
guint64 ts;
GstAdapter *adapter;
/* library handle */
void *handle;
/* input settings */
gint channels, rate;
};
struct _GstAmrnbEncClass {
GstElementClass parent_class;
};
GType gst_amrnbenc_get_type (void);
G_END_DECLS
#endif /* __GST_AMRNBENC_H__ */

400
ext/amrnb/amrnbparse.c
View file

@ -41,15 +41,23 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_CAPS ("audio/x-amr-nb-sh")
);
static const gint block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5,
0, 0, 0, 0, 0, 0, 0
};
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 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 gboolean gst_amrnbparse_query (GstPad * pad, GstQuery * query);
static gboolean gst_amrnbparse_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_amrnbparse_chain (GstPad * pad, GstBuffer * buffer);
static void gst_amrnbparse_loop (GstPad * pad);
static gboolean gst_amrnbparse_sink_activate (GstPad * sinkpad,
GstActivateMode mode);
static GstElementStateReturn gst_amrnbparse_state_change (GstElement * element);
static GstElementClass *parent_class = NULL;
@ -114,12 +122,18 @@ gst_amrnbparse_class_init (GstAmrnbParseClass * klass)
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_pad_set_chain_function (amrnbparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_chain));
gst_pad_set_event_function (amrnbparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_event));
gst_pad_set_loop_function (amrnbparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_loop));
gst_pad_set_activate_function (amrnbparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_amrnbparse_sink_activate));
gst_element_add_pad (GST_ELEMENT (amrnbparse), amrnbparse->sinkpad);
/* create the src pad */
@ -130,11 +144,9 @@ gst_amrnbparse_init (GstAmrnbParse * amrnbparse)
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);
amrnbparse->adapter = gst_adapter_new ();
/* init rest */
amrnbparse->ts = 0;
@ -144,6 +156,7 @@ gst_amrnbparse_init (GstAmrnbParse * amrnbparse)
* Position querying.
*/
#if 0
static const GstFormat *
gst_amrnbparse_formats (GstPad * pad)
{
@ -154,6 +167,7 @@ gst_amrnbparse_formats (GstPad * pad)
return list;
}
#endif
static const GstQueryType *
gst_amrnbparse_querytypes (GstPad * pad)
@ -168,154 +182,348 @@ gst_amrnbparse_querytypes (GstPad * pad)
}
static gboolean
gst_amrnbparse_query (GstPad * pad, GstQueryType type,
GstFormat * fmt, gint64 * value)
gst_amrnbparse_query (GstPad * pad, GstQuery * query)
{
GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (gst_pad_get_parent (pad));
GstAmrnbParse *amrnbparse;
gboolean res = TRUE;
if (*fmt != GST_FORMAT_TIME)
amrnbparse = GST_AMRNBPARSE (GST_PAD_PARENT (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 cur, tot;
GstPad *peer;
gst_query_parse_position (query, &format, NULL, NULL);
if (format != 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);
tot = -1;
*value = amrnbparse->ts * ((gdouble) tot / pos);
peer = gst_pad_get_peer (amrnbparse->sinkpad);
if (peer) {
GstFormat pformat;
gint64 pcur, ptot;
pformat = GST_FORMAT_BYTES;
res = gst_pad_query_position (peer, &pformat, &pcur, &ptot);
gst_object_unref (GST_OBJECT (peer));
if (res) {
tot = amrnbparse->ts * ((gdouble) ptot / pcur);
}
}
cur = amrnbparse->ts;
gst_query_set_position (query, GST_FORMAT_TIME, cur, tot);
res = TRUE;
break;
}
default:
res = FALSE;
break;
}
return res;
}
/*
* Data reading.
*/
static gboolean
gst_amrnbparse_handle_event (GstAmrnbParse * amrnbparse, GstEvent * event)
gst_amrnbparse_event (GstPad * pad, GstEvent * event)
{
GstAmrnbParse *amrnbparse;
gboolean res;
if (!event) {
GST_ELEMENT_ERROR (amrnbparse, RESOURCE, READ, (NULL), (NULL));
return FALSE;
}
amrnbparse = GST_AMRNBPARSE (GST_PAD_PARENT (pad));
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);
res = gst_pad_event_default (amrnbparse->sinkpad, event);
return res;
}
static guint8 *
gst_amrnbparse_reserve (GstAmrnbParse * amrnbparse, gint size)
/* streaming mode */
static GstFlowReturn
gst_amrnbparse_chain (GstPad * pad, GstBuffer * buffer)
{
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;
GstAmrnbParse *amrnbparse;
GstFlowReturn res;
gint block, mode, read;
const guint8 *data;
GstBuffer *out;
if (!(data = gst_amrnbparse_reserve (amrnbparse, 1)))
return;
amrnbparse = GST_AMRNBPARSE (GST_PAD_PARENT (pad));
GST_STREAM_LOCK (pad);
gst_adapter_push (amrnbparse->adapter, buffer);
res = GST_FLOW_OK;
/* 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;
}
if (amrnbparse->need_header) {
if (gst_adapter_available (amrnbparse->adapter) < 6)
goto done;
data = gst_adapter_peek (amrnbparse->adapter, 6);
if (memcmp (data, "#!AMR\n", 6) != 0)
goto done;
gst_adapter_flush (amrnbparse->adapter, 6);
amrnbparse->need_header = FALSE;
}
while (TRUE) {
if (gst_adapter_available (amrnbparse->adapter) < 1)
break;
data = gst_adapter_peek (amrnbparse->adapter, 1);
/* 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);
block = block_size[mode] + 1; /* add one for the mode */
if (gst_adapter_available (amrnbparse->adapter) < block)
break;
out = gst_buffer_new_and_alloc (block);
data = gst_adapter_peek (amrnbparse->adapter, block);
memcpy (GST_BUFFER_DATA (out), data, block);
/* output */
GST_BUFFER_DURATION (buf) = GST_SECOND * 160 / 8000;
GST_BUFFER_TIMESTAMP (buf) = amrnbparse->ts;
amrnbparse->ts += GST_BUFFER_DURATION (buf);
GST_BUFFER_DURATION (out) = GST_SECOND * 160 / 8000;
GST_BUFFER_TIMESTAMP (out) = amrnbparse->ts;
amrnbparse->ts += GST_BUFFER_DURATION (out);
gst_buffer_set_caps (out,
(GstCaps *) gst_pad_get_pad_template_caps (amrnbparse->srcpad));
GST_DEBUG ("Pushing %d bytes of data", block);
gst_pad_push (amrnbparse->srcpad, GST_DATA (buf));
res = gst_pad_push (amrnbparse->srcpad, out);
gst_adapter_flush (amrnbparse->adapter, block);
}
done:
GST_STREAM_UNLOCK (pad);
return res;
}
static gboolean
gst_amrnbparse_read_header (GstAmrnbParse * amrnbparse)
{
GstBuffer *buffer;
GstFlowReturn ret;
gint8 *data;
gint size;
ret =
gst_pad_pull_range (amrnbparse->sinkpad, amrnbparse->offset, 6, &buffer);
if (ret != GST_FLOW_OK)
return FALSE;
data = GST_BUFFER_DATA (buffer);
size = GST_BUFFER_SIZE (buffer);
if (size < 6)
goto not_enough;
if (memcmp (data, "#!AMR\n", 6))
goto no_header;
amrnbparse->offset += 6;
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_amrnbparse_loop (GstPad * pad)
{
GstAmrnbParse *amrnbparse;
GstBuffer *buffer;
guint8 *data;
gint size;
gint block, mode, read;
GstFlowReturn ret;
amrnbparse = GST_AMRNBPARSE (GST_PAD_PARENT (pad));
GST_STREAM_LOCK (pad);
/* init */
if (amrnbparse->need_header) {
gboolean got_header;
got_header = gst_amrnbparse_read_header (amrnbparse);
if (!got_header) {
GST_LOG_OBJECT (amrnbparse, "could not read header");
goto need_pause;
}
amrnbparse->need_header = FALSE;
}
ret =
gst_pad_pull_range (amrnbparse->sinkpad, amrnbparse->offset, 1, &buffer);
if (ret != GST_FLOW_OK)
goto need_pause;
data = GST_BUFFER_DATA (buffer);
size = GST_BUFFER_SIZE (buffer);
/* EOS */
if (size < 1)
goto eos;
/* get size */
mode = (data[0] >> 3) & 0x0F;
block = block_size[mode] + 1; /* add one for the mode */
gst_buffer_unref (buffer);
ret =
gst_pad_pull_range (amrnbparse->sinkpad, amrnbparse->offset, block,
&buffer);
if (ret != GST_FLOW_OK)
goto need_pause;
amrnbparse->offset += block;
/* output */
GST_BUFFER_DURATION (buffer) = GST_SECOND * 160 / 8000;
GST_BUFFER_TIMESTAMP (buffer) = amrnbparse->ts;
amrnbparse->ts += GST_BUFFER_DURATION (buffer);
gst_buffer_set_caps (buffer,
(GstCaps *) gst_pad_get_pad_template_caps (amrnbparse->srcpad));
GST_DEBUG ("Pushing %d bytes of data", block);
ret = gst_pad_push (amrnbparse->srcpad, buffer);
if (ret != GST_FLOW_OK)
goto need_pause;
GST_STREAM_UNLOCK (pad);
return;
need_pause:
{
GST_LOG_OBJECT (amrnbparse, "pausing task");
gst_task_pause (GST_RPAD_TASK (pad));
GST_STREAM_UNLOCK (pad);
return;
}
eos:
{
GST_LOG_OBJECT (amrnbparse, "pausing task");
gst_pad_push_event (amrnbparse->srcpad, gst_event_new (GST_EVENT_EOS));
gst_task_pause (GST_RPAD_TASK (pad));
GST_STREAM_UNLOCK (pad);
return;
}
}
static gboolean
gst_amrnbparse_sink_activate (GstPad * sinkpad, GstActivateMode mode)
{
gboolean result = FALSE;
GstAmrnbParse *amrnbparse;
amrnbparse = GST_AMRNBPARSE (GST_OBJECT_PARENT (sinkpad));
switch (mode) {
case GST_ACTIVATE_PUSH:
amrnbparse->seekable = FALSE;
result = TRUE;
break;
case GST_ACTIVATE_PULL:
/* if we have a scheduler we can start the task */
if (GST_ELEMENT_SCHEDULER (amrnbparse)) {
gst_pad_peer_set_active (sinkpad, mode);
GST_STREAM_LOCK (sinkpad);
GST_RPAD_TASK (sinkpad) =
gst_scheduler_create_task (GST_ELEMENT_SCHEDULER (amrnbparse),
(GstTaskFunction) gst_amrnbparse_loop, sinkpad);
amrnbparse->need_header = TRUE;
amrnbparse->seekable = TRUE;
amrnbparse->ts = 0;
gst_task_start (GST_RPAD_TASK (sinkpad));
GST_STREAM_UNLOCK (sinkpad);
result = TRUE;
}
break;
case GST_ACTIVATE_NONE:
/* step 1, unblock clock sync (if any) */
/* step 2, make sure streaming finishes */
GST_STREAM_LOCK (sinkpad);
/* step 3, stop the task */
if (GST_RPAD_TASK (sinkpad)) {
gst_task_stop (GST_RPAD_TASK (sinkpad));
gst_object_unref (GST_OBJECT (GST_RPAD_TASK (sinkpad)));
GST_RPAD_TASK (sinkpad) = NULL;
}
GST_STREAM_UNLOCK (sinkpad);
result = TRUE;
break;
}
return result;
}
static GstElementStateReturn
gst_amrnbparse_state_change (GstElement * element)
{
GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (element);
GstAmrnbParse *amrnbparse;
gint transition;
GstElementStateReturn ret;
switch (GST_STATE_TRANSITION (element)) {
amrnbparse = GST_AMRNBPARSE (element);
transition = GST_STATE_TRANSITION (element);
switch (transition) {
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);
case GST_STATE_READY_TO_PAUSED:
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
switch (transition) {
case GST_STATE_PAUSED_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}

10
ext/amrnb/amrnbparse.h
View file

@ -21,7 +21,7 @@
#define __GST_AMRNBPARSE_H__
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
@ -44,7 +44,13 @@ struct _GstAmrnbParse {
/* pads */
GstPad *sinkpad, *srcpad;
GstByteStream *bs;
GstAdapter *adapter;
gboolean seekable;
gboolean need_header;
gint64 offset;
guint64 ts;
};