ext/voamrwbenc/gstvoamrwbenc.c - imx-gst-plugins-bad - Git at Google

 /* 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-voamrwbenc
  * @see_also: #GstAmrWbDec, #GstAmrWbParse
  *
  * AMR wideband encoder 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.wav ! wavparse ! audioresample ! audioconvert ! voamrwbenc ! filesink location=abc.amr
  * ]|
  * Please note that the above stream misses the header, that is needed to play
  * the stream.
  * </refsect2>
  */

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include "gstvoamrwbenc.h"

 #define MR660  0
 #define MR885  1
 #define MR1265 2
 #define MR1425 2
 #define MR1585 3
 #define MR1825 4
 #define MR1985 5
 #define MR2305 6
 #define MR2385 7
 #define MRDTX  8

 #define L_FRAME16k      320     /* Frame size at 16kHz  */

 static GType
 gst_voamrwbenc_bandmode_get_type (void)
 {
   static GType gst_voamrwbenc_bandmode_type = 0;
   static GEnumValue gst_voamrwbenc_bandmode[] = {
     {MR660, "MR660", "MR660"},
     {MR885, "MR885", "MR885"},
     {MR1265, "MR1265", "MR1265"},
     {MR1425, "MR1425", "MR1425"},
     {MR1585, "MR1585", "MR1585"},
     {MR1825, "MR1825", "MR1825"},
     {MR1985, "MR1985", "MR1985"},
     {MR2305, "MR2305", "MR2305"},
     {MR2385, "MR2385", "MR2385"},
     {MRDTX, "MRDTX", "MRDTX"},
     {0, NULL, NULL},
   };
   if (!gst_voamrwbenc_bandmode_type) {
     gst_voamrwbenc_bandmode_type =
         g_enum_register_static ("GstVoAmrWbEncBandMode",
         gst_voamrwbenc_bandmode);
   }
   return gst_voamrwbenc_bandmode_type;
 }

 #define GST_VOAMRWBENC_BANDMODE_TYPE (gst_voamrwbenc_bandmode_get_type())

 #define BANDMODE_DEFAULT MR660

 enum
 {
   PROP_0,
   PROP_BANDMODE
 };

 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS ("audio/x-raw, "
         "format = (string) " GST_AUDIO_NE (S16) ", "
         "layout = (string) interleaved, "
         "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/AMR-WB, "
         "rate = (int) 16000, " "channels = (int) 1")
     );

 GST_DEBUG_CATEGORY_STATIC (gst_voamrwbenc_debug);
 #define GST_CAT_DEFAULT gst_voamrwbenc_debug

 static gboolean gst_voamrwbenc_start (GstAudioEncoder * enc);
 static gboolean gst_voamrwbenc_stop (GstAudioEncoder * enc);
 static gboolean gst_voamrwbenc_set_format (GstAudioEncoder * enc,
     GstAudioInfo * info);
 static GstFlowReturn gst_voamrwbenc_handle_frame (GstAudioEncoder * enc,
     GstBuffer * in_buf);

 G_DEFINE_TYPE (GstVoAmrWbEnc, gst_voamrwbenc, GST_TYPE_AUDIO_ENCODER);

 static void
 gst_voamrwbenc_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec)
 {
   GstVoAmrWbEnc *self = GST_VOAMRWBENC (object);

   switch (prop_id) {
     case PROP_BANDMODE:
       self->bandmode = g_value_get_enum (value);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
   }

   return;
 }

 static void
 gst_voamrwbenc_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec)
 {
   GstVoAmrWbEnc *self = GST_VOAMRWBENC (object);

   switch (prop_id) {
     case PROP_BANDMODE:
       g_value_set_enum (value, self->bandmode);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
   }

   return;
 }

 static void
 gst_voamrwbenc_class_init (GstVoAmrWbEncClass * klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   GstAudioEncoderClass *base_class = GST_AUDIO_ENCODER_CLASS (klass);

   object_class->set_property = gst_voamrwbenc_set_property;
   object_class->get_property = gst_voamrwbenc_get_property;

   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_simple (element_class, "AMR-WB audio encoder",
       "Codec/Encoder/Audio",
       "Adaptive Multi-Rate Wideband audio encoder",
       "Renato Araujo <renato.filho@indt.org.br>");

   base_class->start = GST_DEBUG_FUNCPTR (gst_voamrwbenc_start);
   base_class->stop = GST_DEBUG_FUNCPTR (gst_voamrwbenc_stop);
   base_class->set_format = GST_DEBUG_FUNCPTR (gst_voamrwbenc_set_format);
   base_class->handle_frame = GST_DEBUG_FUNCPTR (gst_voamrwbenc_handle_frame);

   g_object_class_install_property (object_class, PROP_BANDMODE,
       g_param_spec_enum ("band-mode", "Band Mode",
           "Encoding Band Mode (Kbps)", GST_VOAMRWBENC_BANDMODE_TYPE,
           BANDMODE_DEFAULT,
           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));

   GST_DEBUG_CATEGORY_INIT (gst_voamrwbenc_debug, "voamrwbenc", 0,
       "voamrwb encoder");
 }

 static void
 gst_voamrwbenc_init (GstVoAmrWbEnc * amrwbenc)
 {
   /* init rest */
   amrwbenc->handle = NULL;
   amrwbenc->channels = 0;
   amrwbenc->rate = 0;
 }

 static gboolean
 gst_voamrwbenc_start (GstAudioEncoder * enc)
 {
   GstVoAmrWbEnc *voamrwbenc = GST_VOAMRWBENC (enc);

   GST_DEBUG_OBJECT (enc, "start");

   if (!(voamrwbenc->handle = E_IF_init ()))
     return FALSE;

   voamrwbenc->rate = 0;
   voamrwbenc->channels = 0;

   return TRUE;
 }

 static gboolean
 gst_voamrwbenc_stop (GstAudioEncoder * enc)
 {
   GstVoAmrWbEnc *voamrwbenc = GST_VOAMRWBENC (enc);

   GST_DEBUG_OBJECT (enc, "stop");

   if (voamrwbenc->handle) {
     E_IF_exit (voamrwbenc->handle);
     voamrwbenc->handle = NULL;
   }

   return TRUE;
 }

 static gboolean
 gst_voamrwbenc_set_format (GstAudioEncoder * benc, GstAudioInfo * info)
 {
   GstVoAmrWbEnc *amrwbenc;
   GstCaps *copy;

   amrwbenc = GST_VOAMRWBENC (benc);

   /* get channel count */
   amrwbenc->channels = GST_AUDIO_INFO_CHANNELS (info);
   amrwbenc->rate = GST_AUDIO_INFO_RATE (info);

   /* this is not wrong but will sound bad */
   if (amrwbenc->channels != 1) {
     GST_WARNING ("amrwbdec is only optimized for mono channels");
   }
   if (amrwbenc->rate != 16000) {
     GST_WARNING ("amrwbdec is only optimized for 16000 Hz samplerate");
   }

   /* create reverse caps */
   copy = gst_caps_new_simple ("audio/AMR-WB",
       "channels", G_TYPE_INT, amrwbenc->channels,
       "rate", G_TYPE_INT, amrwbenc->rate, NULL);

   gst_audio_encoder_set_output_format (GST_AUDIO_ENCODER (amrwbenc), copy);
   gst_caps_unref (copy);

   /* report needs to base class: one frame at a time */
   gst_audio_encoder_set_frame_samples_min (benc, L_FRAME16k);
   gst_audio_encoder_set_frame_samples_max (benc, L_FRAME16k);
   gst_audio_encoder_set_frame_max (benc, 1);

   return TRUE;
 }

 static GstFlowReturn
 gst_voamrwbenc_handle_frame (GstAudioEncoder * benc, GstBuffer * buffer)
 {
   GstVoAmrWbEnc *amrwbenc;
   GstFlowReturn ret = GST_FLOW_OK;
   const int buffer_size = sizeof (short) * L_FRAME16k;
   GstBuffer *out;
   gint outsize;
   GstMapInfo map, omap;

   amrwbenc = GST_VOAMRWBENC (benc);

   g_return_val_if_fail (amrwbenc->handle, GST_FLOW_NOT_NEGOTIATED);

   /* we don't deal with squeezing remnants, so simply discard those */
   if (G_UNLIKELY (buffer == NULL)) {
     GST_DEBUG_OBJECT (amrwbenc, "no data");
     goto done;
   }

   gst_buffer_map (buffer, &map, GST_MAP_READ);

   if (G_UNLIKELY (map.size < buffer_size)) {
     GST_DEBUG_OBJECT (amrwbenc, "discarding trailing data %d", (gint) map.size);
     gst_buffer_unmap (buffer, &map);
     ret = gst_audio_encoder_finish_frame (benc, NULL, -1);
     goto done;
   }

   out = gst_buffer_new_and_alloc (buffer_size);
   gst_buffer_map (out, &omap, GST_MAP_WRITE);
   /* encode */
   outsize = E_IF_encode (amrwbenc->handle, amrwbenc->bandmode,
       (const short *) map.data, (unsigned char *) omap.data, 0);

   GST_LOG_OBJECT (amrwbenc, "encoded to %d bytes", outsize);
   gst_buffer_unmap (out, &omap);
   gst_buffer_unmap (buffer, &map);
   gst_buffer_resize (out, 0, outsize);

   ret = gst_audio_encoder_finish_frame (benc, out, L_FRAME16k);

 done:
   return ret;
 }
	/* 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-voamrwbenc
	* @see_also: #GstAmrWbDec, #GstAmrWbParse
	*
	* AMR wideband encoder 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.wav ! wavparse ! audioresample ! audioconvert ! voamrwbenc ! filesink location=abc.amr
	* ]\|
	* Please note that the above stream misses the header, that is needed to play
	* the stream.
	* </refsect2>
	*/

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include "gstvoamrwbenc.h"

	#define MR660 0
	#define MR885 1
	#define MR1265 2
	#define MR1425 2
	#define MR1585 3
	#define MR1825 4
	#define MR1985 5
	#define MR2305 6
	#define MR2385 7
	#define MRDTX 8

	#define L_FRAME16k 320 /* Frame size at 16kHz */

	static GType
	gst_voamrwbenc_bandmode_get_type (void)
	{
	static GType gst_voamrwbenc_bandmode_type = 0;
	static GEnumValue gst_voamrwbenc_bandmode[] = {
	{MR660, "MR660", "MR660"},
	{MR885, "MR885", "MR885"},
	{MR1265, "MR1265", "MR1265"},
	{MR1425, "MR1425", "MR1425"},
	{MR1585, "MR1585", "MR1585"},
	{MR1825, "MR1825", "MR1825"},
	{MR1985, "MR1985", "MR1985"},
	{MR2305, "MR2305", "MR2305"},
	{MR2385, "MR2385", "MR2385"},
	{MRDTX, "MRDTX", "MRDTX"},
	{0, NULL, NULL},
	};
	if (!gst_voamrwbenc_bandmode_type) {
	gst_voamrwbenc_bandmode_type =
	g_enum_register_static ("GstVoAmrWbEncBandMode",
	gst_voamrwbenc_bandmode);
	}
	return gst_voamrwbenc_bandmode_type;
	}

	#define GST_VOAMRWBENC_BANDMODE_TYPE (gst_voamrwbenc_bandmode_get_type())

	#define BANDMODE_DEFAULT MR660

	enum
	{
	PROP_0,
	PROP_BANDMODE
	};

	static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
	GST_PAD_SINK,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS ("audio/x-raw, "
	"format = (string) " GST_AUDIO_NE (S16) ", "
	"layout = (string) interleaved, "
	"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/AMR-WB, "
	"rate = (int) 16000, " "channels = (int) 1")
	);

	GST_DEBUG_CATEGORY_STATIC (gst_voamrwbenc_debug);
	#define GST_CAT_DEFAULT gst_voamrwbenc_debug

	static gboolean gst_voamrwbenc_start (GstAudioEncoder * enc);
	static gboolean gst_voamrwbenc_stop (GstAudioEncoder * enc);
	static gboolean gst_voamrwbenc_set_format (GstAudioEncoder * enc,
	GstAudioInfo * info);
	static GstFlowReturn gst_voamrwbenc_handle_frame (GstAudioEncoder * enc,
	GstBuffer * in_buf);

	G_DEFINE_TYPE (GstVoAmrWbEnc, gst_voamrwbenc, GST_TYPE_AUDIO_ENCODER);

	static void
	gst_voamrwbenc_set_property (GObject * object, guint prop_id,
	const GValue * value, GParamSpec * pspec)
	{
	GstVoAmrWbEnc *self = GST_VOAMRWBENC (object);

	switch (prop_id) {
	case PROP_BANDMODE:
	self->bandmode = g_value_get_enum (value);
	break;
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	break;
	}

	return;
	}

	static void
	gst_voamrwbenc_get_property (GObject * object, guint prop_id,
	GValue * value, GParamSpec * pspec)
	{
	GstVoAmrWbEnc *self = GST_VOAMRWBENC (object);

	switch (prop_id) {
	case PROP_BANDMODE:
	g_value_set_enum (value, self->bandmode);
	break;
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	break;
	}

	return;
	}

	static void
	gst_voamrwbenc_class_init (GstVoAmrWbEncClass * klass)
	{
	GObjectClass *object_class = G_OBJECT_CLASS (klass);
	GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
	GstAudioEncoderClass *base_class = GST_AUDIO_ENCODER_CLASS (klass);

	object_class->set_property = gst_voamrwbenc_set_property;
	object_class->get_property = gst_voamrwbenc_get_property;

	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_simple (element_class, "AMR-WB audio encoder",
	"Codec/Encoder/Audio",
	"Adaptive Multi-Rate Wideband audio encoder",
	"Renato Araujo <renato.filho@indt.org.br>");

	base_class->start = GST_DEBUG_FUNCPTR (gst_voamrwbenc_start);
	base_class->stop = GST_DEBUG_FUNCPTR (gst_voamrwbenc_stop);
	base_class->set_format = GST_DEBUG_FUNCPTR (gst_voamrwbenc_set_format);
	base_class->handle_frame = GST_DEBUG_FUNCPTR (gst_voamrwbenc_handle_frame);

	g_object_class_install_property (object_class, PROP_BANDMODE,
	g_param_spec_enum ("band-mode", "Band Mode",
	"Encoding Band Mode (Kbps)", GST_VOAMRWBENC_BANDMODE_TYPE,
	BANDMODE_DEFAULT,
	G_PARAM_READWRITE \| G_PARAM_CONSTRUCT \| G_PARAM_STATIC_STRINGS));

	GST_DEBUG_CATEGORY_INIT (gst_voamrwbenc_debug, "voamrwbenc", 0,
	"voamrwb encoder");
	}

	static void
	gst_voamrwbenc_init (GstVoAmrWbEnc * amrwbenc)
	{
	/* init rest */
	amrwbenc->handle = NULL;
	amrwbenc->channels = 0;
	amrwbenc->rate = 0;
	}

	static gboolean
	gst_voamrwbenc_start (GstAudioEncoder * enc)
	{
	GstVoAmrWbEnc *voamrwbenc = GST_VOAMRWBENC (enc);

	GST_DEBUG_OBJECT (enc, "start");

	if (!(voamrwbenc->handle = E_IF_init ()))
	return FALSE;

	voamrwbenc->rate = 0;
	voamrwbenc->channels = 0;

	return TRUE;
	}

	static gboolean
	gst_voamrwbenc_stop (GstAudioEncoder * enc)
	{
	GstVoAmrWbEnc *voamrwbenc = GST_VOAMRWBENC (enc);

	GST_DEBUG_OBJECT (enc, "stop");

	if (voamrwbenc->handle) {
	E_IF_exit (voamrwbenc->handle);
	voamrwbenc->handle = NULL;
	}

	return TRUE;
	}

	static gboolean
	gst_voamrwbenc_set_format (GstAudioEncoder * benc, GstAudioInfo * info)
	{
	GstVoAmrWbEnc *amrwbenc;
	GstCaps *copy;

	amrwbenc = GST_VOAMRWBENC (benc);

	/* get channel count */
	amrwbenc->channels = GST_AUDIO_INFO_CHANNELS (info);
	amrwbenc->rate = GST_AUDIO_INFO_RATE (info);

	/* this is not wrong but will sound bad */
	if (amrwbenc->channels != 1) {
	GST_WARNING ("amrwbdec is only optimized for mono channels");
	}
	if (amrwbenc->rate != 16000) {
	GST_WARNING ("amrwbdec is only optimized for 16000 Hz samplerate");
	}

	/* create reverse caps */
	copy = gst_caps_new_simple ("audio/AMR-WB",
	"channels", G_TYPE_INT, amrwbenc->channels,
	"rate", G_TYPE_INT, amrwbenc->rate, NULL);

	gst_audio_encoder_set_output_format (GST_AUDIO_ENCODER (amrwbenc), copy);
	gst_caps_unref (copy);

	/* report needs to base class: one frame at a time */
	gst_audio_encoder_set_frame_samples_min (benc, L_FRAME16k);
	gst_audio_encoder_set_frame_samples_max (benc, L_FRAME16k);
	gst_audio_encoder_set_frame_max (benc, 1);

	return TRUE;
	}

	static GstFlowReturn
	gst_voamrwbenc_handle_frame (GstAudioEncoder * benc, GstBuffer * buffer)
	{
	GstVoAmrWbEnc *amrwbenc;
	GstFlowReturn ret = GST_FLOW_OK;
	const int buffer_size = sizeof (short) * L_FRAME16k;
	GstBuffer *out;
	gint outsize;
	GstMapInfo map, omap;

	amrwbenc = GST_VOAMRWBENC (benc);

	g_return_val_if_fail (amrwbenc->handle, GST_FLOW_NOT_NEGOTIATED);

	/* we don't deal with squeezing remnants, so simply discard those */
	if (G_UNLIKELY (buffer == NULL)) {
	GST_DEBUG_OBJECT (amrwbenc, "no data");
	goto done;
	}

	gst_buffer_map (buffer, &map, GST_MAP_READ);

	if (G_UNLIKELY (map.size < buffer_size)) {
	GST_DEBUG_OBJECT (amrwbenc, "discarding trailing data %d", (gint) map.size);
	gst_buffer_unmap (buffer, &map);
	ret = gst_audio_encoder_finish_frame (benc, NULL, -1);
	goto done;
	}

	out = gst_buffer_new_and_alloc (buffer_size);
	gst_buffer_map (out, &omap, GST_MAP_WRITE);
	/* encode */
	outsize = E_IF_encode (amrwbenc->handle, amrwbenc->bandmode,
	(const short ) map.data, (unsigned char ) omap.data, 0);

	GST_LOG_OBJECT (amrwbenc, "encoded to %d bytes", outsize);
	gst_buffer_unmap (out, &omap);
	gst_buffer_unmap (buffer, &map);
	gst_buffer_resize (out, 0, outsize);

	ret = gst_audio_encoder_finish_frame (benc, out, L_FRAME16k);

	done:
	return ret;
	}