gstreamer/ext/lame/gstlame.c

/* Gnome-Streamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * 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.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>

#include <sys/soundcard.h>

#include "gstlame.h"


static GstElementDetails gst_lame_details = {
  "L.A.M.E. mp3 encoder",
  "Filter/Encoder/Audio",
  "High-quality free MP3 encoder",
  VERSION,
  "Erik Walthinsen <omega@cse.ogi.edu>",
  "(C) 2000",
};

GST_PADTEMPLATE_FACTORY (gst_lame_sink_factory,
  "sink",
  GST_PAD_SINK,
  GST_PAD_ALWAYS,
  GST_CAPS_NEW (
    "gstlame_sink",
    "audio/raw",
      "format",     GST_PROPS_STRING ("int"),
      "law",        GST_PROPS_INT (0),
      "endianness", GST_PROPS_INT (G_BYTE_ORDER),
      "signed",     GST_PROPS_BOOLEAN (TRUE),
      "width",      GST_PROPS_INT (16),
      "depth",      GST_PROPS_INT (16),
      "rate",       GST_PROPS_INT_RANGE (8000, 48000),
      "channels",   GST_PROPS_INT_RANGE (1, 2)
  )
)

GST_PADTEMPLATE_FACTORY (gst_lame_src_factory,
  "src",
  GST_PAD_SRC,
  GST_PAD_ALWAYS,
  GST_CAPS_NEW (
    "gstlame_src",
    "audio/mp3",
    NULL
  )
)

/********** Define useful types for non-programmatic interfaces **********/
#define GST_TYPE_LAME_MODE (gst_lame_mode_get_type())
static GType
gst_lame_mode_get_type (void)
{
  static GType lame_mode_type = 0;
  static GEnumValue lame_modes[] = {
    { 0, "0", "Stereo" },
    { 1, "1", "Joint-Stereo" },
    { 2, "2", "Dual channel" },
    { 3, "3", "Mono" },
    { 0, NULL, NULL },
  };
  if (!lame_mode_type) {
    lame_mode_type = g_enum_register_static ("GstLameMode", lame_modes);
  }
  return lame_mode_type;
}

#define GST_TYPE_LAME_QUALITY (gst_lame_quality_get_type())
static GType
gst_lame_quality_get_type (void)
{
  static GType lame_quality_type = 0;
  static GEnumValue lame_quality[] = {
    { 0, "0", "0 - Best" },
    { 1, "1", "1" },
    { 2, "2", "2" },
    { 3, "3", "3" },
    { 4, "4", "4" },
    { 5, "5", "5 - Default" },
    { 6, "6", "6" },
    { 7, "7", "7" },
    { 8, "8", "8" },
    { 9, "9", "9 - Worst" },
    { 0, NULL, NULL },
  };
  if (!lame_quality_type) {
    lame_quality_type = g_enum_register_static ("GstLameQuality", lame_quality);
  }
  return lame_quality_type;
}

#define GST_TYPE_LAME_PADDING (gst_lame_padding_get_type())
static GType
gst_lame_padding_get_type (void)
{
  static GType lame_padding_type = 0;
  static GEnumValue lame_padding[] = {
    { 0, "0", "No Padding" },
    { 1, "1", "Always Pad" },
    { 2, "2", "Adjust Padding" },
    { 0, NULL, NULL },
  };
  if (!lame_padding_type) {
    lame_padding_type = g_enum_register_static ("GstLamePadding", lame_padding);
  }
  return lame_padding_type;
}

/********** Standard stuff for signals and arguments **********/
/* GstLame signals and args */
enum {
  /* FILL_ME */
  LAST_SIGNAL
};

enum {
  ARG_0,
  ARG_BITRATE,
  ARG_COMPRESSION_RATIO,
  ARG_QUALITY,
  ARG_MODE,
  ARG_FORCE_MS,
  ARG_FREE_FORMAT,
  ARG_COPYRIGHT,
  ARG_ORIGINAL,
  ARG_ERROR_PROTECTION,
  ARG_PADDING_TYPE,
  ARG_EXTENSION,
  ARG_STRICT_ISO,
  ARG_DISABLE_RESERVOIR,
  ARG_VBR,
  ARG_VBR_MEAN_BITRATE,
  ARG_VBR_MIN_BITRATE,
  ARG_VBR_MAX_BITRATE,
  ARG_VBR_HARD_MIN,
  ARG_LOWPASS_FREQ,
  ARG_LOWPASS_WIDTH,
  ARG_HIGHPASS_FREQ,
  ARG_HIGHPASS_WIDTH,
  ARG_ATH_ONLY,
  ARG_ATH_SHORT,
  ARG_NO_ATH,
//  ARG_ATH_TYPE,		// note: CVS has this, 3.87 doesn't
  ARG_ATH_LOWER,
  ARG_CWLIMIT,
  ARG_ALLOW_DIFF_SHORT,
  ARG_NO_SHORT_BLOCKS,
  ARG_EMPHASIS,
};


static void			gst_lame_class_init	(GstLameClass *klass);
static void			gst_lame_init		(GstLame *gst_lame);

static void			gst_lame_set_property	(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void			gst_lame_get_property	(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);

static void			gst_lame_chain		(GstPad *pad, GstBuffer *buf);
static gboolean 		gst_lame_setup 		(GstLame *lame);

static GstElementClass *parent_class = NULL;
//static guint gst_lame_signals[LAST_SIGNAL] = { 0 };

GType
gst_lame_get_type (void)
{
  static GType gst_lame_type = 0;

  if (!gst_lame_type) {
    static const GTypeInfo gst_lame_info = {
      sizeof(GstLameClass),      NULL,
      NULL,
      (GClassInitFunc)gst_lame_class_init,
      NULL,
      NULL,
      sizeof(GstLame),
      0,
      (GInstanceInitFunc)gst_lame_init,
    };
    gst_lame_type = g_type_register_static (GST_TYPE_ELEMENT, "GstLame", &gst_lame_info, 0);
  }
  return gst_lame_type;
}

static void
gst_lame_class_init (GstLameClass *klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

  gobject_class = (GObjectClass*)klass;
  gstelement_class = (GstElementClass*)klass;

  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);

  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BITRATE,
    g_param_spec_int("bitrate","bitrate","bitrate",
                     G_MININT,G_MAXINT,128,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_COMPRESSION_RATIO,
    g_param_spec_float("compression_ratio","compression_ratio","compression_ratio",
                       0.0,200.0,11.0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_QUALITY,
    g_param_spec_enum("quality","quality","quality",
                      GST_TYPE_LAME_QUALITY,5,G_PARAM_READWRITE)); // CHECKME!
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MODE,
    g_param_spec_enum("mode","mode","mode",
                      GST_TYPE_LAME_MODE,0,G_PARAM_READWRITE)); // CHECKME!
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORCE_MS,
    g_param_spec_boolean("force_ms","force_ms","force_ms",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREE_FORMAT,
    g_param_spec_boolean("free_format","free_format","free_format",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_COPYRIGHT,
    g_param_spec_boolean("copyright","copyright","copyright",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ORIGINAL,
    g_param_spec_boolean("original","original","original",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ERROR_PROTECTION,
    g_param_spec_boolean("error_protection","error_protection","error_protection",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PADDING_TYPE,
    g_param_spec_enum("padding_type","padding_type","padding_type",
                      GST_TYPE_LAME_PADDING,0,G_PARAM_READWRITE)); // CHECKME!
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_EXTENSION,
    g_param_spec_boolean("extension","extension","extension",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_STRICT_ISO,
    g_param_spec_boolean("strict_iso","strict_iso","strict_iso",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DISABLE_RESERVOIR,
    g_param_spec_boolean("disable_reservoir","disable_reservoir","disable_reservoir",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR,
    g_param_spec_boolean("vbr","vbr","vbr",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_MEAN_BITRATE,
    g_param_spec_int("vbr_mean_bitrate","vbr_mean_bitrate","vbr_mean_bitrate",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_MIN_BITRATE,
    g_param_spec_int("vbr_min_bitrate","vbr_min_bitrate","vbr_min_bitrate",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_MAX_BITRATE,
    g_param_spec_int("vbr_max_bitrate","vbr_max_bitrate","vbr_max_bitrate",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_HARD_MIN,
    g_param_spec_int("vbr_hard_min","vbr_hard_min","vbr_hard_min",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LOWPASS_FREQ,
    g_param_spec_int("lowpass_freq","lowpass_freq","lowpass_freq",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LOWPASS_WIDTH,
    g_param_spec_int("lowpass_width","lowpass_width","lowpass_width",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HIGHPASS_FREQ,
    g_param_spec_int("highpass_freq","highpass_freq","highpass_freq",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HIGHPASS_WIDTH,
    g_param_spec_int("highpass_width","highpass_width","highpass_width",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ATH_ONLY,
    g_param_spec_boolean("ath_only","ath_only","ath_only",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ATH_SHORT,
    g_param_spec_boolean("ath_short","ath_short","ath_short",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NO_ATH,
    g_param_spec_boolean("no_ath","no_ath","no_ath",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
//  gtk_object_add_arg_type ("GstLame::ath_type", G_TYPE_INT,
//                             GTK_ARG_READWRITE, ARG_ATH_TYPE);
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ATH_LOWER,
    g_param_spec_int("ath_lower","ath_lower","ath_lower",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CWLIMIT,
    g_param_spec_int("cwlimit","cwlimit","cwlimit",
                     G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ALLOW_DIFF_SHORT,
    g_param_spec_boolean("allow_diff_short","allow_diff_short","allow_diff_short",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NO_SHORT_BLOCKS,
    g_param_spec_boolean("no_short_blocks","no_short_blocks","no_short_blocks",
                         TRUE,G_PARAM_READWRITE)); // CHECKME
  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_EMPHASIS,
    g_param_spec_boolean("emphasis","emphasis","emphasis",
                         TRUE,G_PARAM_READWRITE)); // CHECKME

  gobject_class->set_property = gst_lame_set_property;
  gobject_class->get_property = gst_lame_get_property;
}

static void
gst_lame_newcaps (GstPad *pad, GstCaps *caps)
{
  GstLame *lame;

  lame = GST_LAME (gst_pad_get_parent (pad));

  lame->samplerate = gst_caps_get_int (caps, "rate");
  lame->num_channels = gst_caps_get_int (caps, "channels");

  GST_DEBUG (0, "rate=%d, channels=%d\n", lame->samplerate, lame->num_channels);

  gst_lame_setup (lame);
}

static void
gst_lame_init (GstLame *lame)
{
  GST_DEBUG_ENTER("(\"%s\")", gst_element_get_name (GST_ELEMENT (lame)));

  lame->sinkpad = gst_pad_new_from_template (GST_PADTEMPLATE_GET (gst_lame_sink_factory), "sink");
  gst_element_add_pad (GST_ELEMENT (lame), lame->sinkpad);
  gst_pad_set_chain_function (lame->sinkpad, gst_lame_chain);
  gst_pad_set_newcaps_function (lame->sinkpad, gst_lame_newcaps);

  lame->srcpad = gst_pad_new_from_template (GST_PADTEMPLATE_GET (gst_lame_src_factory), "src");
  gst_element_add_pad (GST_ELEMENT (lame), lame->srcpad);
  gst_pad_set_caps (lame->srcpad, gst_pad_get_padtemplate_caps (lame->srcpad));

  GST_DEBUG (0,"setting up lame encoder\n");
  lame->lgf = lame_init();

  lame->samplerate = 44100;
  lame->num_channels = 2;

  lame->bitrate = lame_get_brate(lame->lgf);
  lame->compression_ratio = lame_get_compression_ratio(lame->lgf);
  lame->quality = lame_get_quality(lame->lgf);
  lame->mode = lame_get_mode(lame->lgf);
  lame->force_ms = lame_get_force_ms(lame->lgf);
  lame->free_format = lame_get_free_format(lame->lgf);
  lame->copyright = lame_get_copyright(lame->lgf);
  lame->original = lame_get_original(lame->lgf);
  lame->error_protection = lame_get_error_protection(lame->lgf);
  lame->padding_type = lame_get_padding_type(lame->lgf);
  lame->extension = lame_get_extension(lame->lgf);
  lame->strict_iso = lame_get_strict_ISO(lame->lgf);
  lame->disable_reservoir = lame_get_disable_reservoir(lame->lgf);
  lame->vbr = lame_get_VBR_q(lame->lgf);
  lame->vbr_mean_bitrate = lame_get_VBR_mean_bitrate_kbps(lame->lgf);
  lame->vbr_min_bitrate = lame_get_VBR_min_bitrate_kbps(lame->lgf);
  lame->vbr_max_bitrate = lame_get_VBR_max_bitrate_kbps(lame->lgf);
  lame->vbr_hard_min = lame_get_VBR_hard_min(lame->lgf);
  lame->lowpass_freq = lame_get_lowpassfreq(lame->lgf);
  lame->lowpass_width = lame_get_lowpasswidth(lame->lgf);
  lame->highpass_freq = lame_get_highpassfreq(lame->lgf);
  lame->highpass_width = lame_get_highpasswidth(lame->lgf);
  lame->ath_only = lame_get_ATHonly(lame->lgf);
  lame->ath_short = lame_get_ATHshort(lame->lgf);
  lame->no_ath = lame_get_noATH(lame->lgf);
//  lame->ath_type = lame_get_ATHtype(lame->lgf);
  lame->ath_lower = lame_get_ATHlower(lame->lgf);
  lame->cwlimit = lame_get_cwlimit(lame->lgf);
  lame->allow_diff_short = lame_get_allow_diff_short(lame->lgf);
  lame->no_short_blocks = lame_get_no_short_blocks(lame->lgf);
  lame->emphasis = lame_get_emphasis(lame->lgf);

  GST_DEBUG (0,"done initializing lame element\n");;
}


static void
gst_lame_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
  GstLame *lame;

  /* it's not null if we got it, but it might not be ours */
  g_return_if_fail (GST_IS_LAME (object));

  lame = GST_LAME (object);

  switch (prop_id) {
    case ARG_BITRATE:
      lame->bitrate = g_value_get_int (value);
      break;
    case ARG_COMPRESSION_RATIO:
      lame->compression_ratio = g_value_get_float (value);
      break;
    case ARG_QUALITY:
      lame->quality = g_value_get_int (value);
      break;
    case ARG_MODE:
      lame->mode = g_value_get_int (value);
      break;
    case ARG_FORCE_MS:
      lame->force_ms = g_value_get_boolean (value);
      break;
    case ARG_FREE_FORMAT:
      lame->free_format = g_value_get_boolean (value);
      break;
    case ARG_COPYRIGHT:
      lame->copyright = g_value_get_boolean (value);
      break;
    case ARG_ORIGINAL:
      lame->original = g_value_get_boolean (value);
      break;
    case ARG_ERROR_PROTECTION:
      lame->error_protection = g_value_get_boolean (value);
      break;
    case ARG_PADDING_TYPE:
      lame->padding_type = g_value_get_int (value);
      break;
    case ARG_EXTENSION:
      lame->extension = g_value_get_boolean (value);
      break;
    case ARG_STRICT_ISO:
      lame->strict_iso = g_value_get_boolean (value);
      break;
    case ARG_DISABLE_RESERVOIR:
      lame->disable_reservoir = g_value_get_boolean (value);
      break;
    case ARG_VBR:
      lame->vbr = g_value_get_boolean (value);
      break;
    case ARG_VBR_MEAN_BITRATE:
      lame->vbr_mean_bitrate = g_value_get_int (value);
      break;
    case ARG_VBR_MIN_BITRATE:
      lame->vbr_min_bitrate = g_value_get_int (value);
      break;
    case ARG_VBR_MAX_BITRATE:
      lame->vbr_max_bitrate = g_value_get_int (value);
      break;
    case ARG_VBR_HARD_MIN:
      lame->vbr_hard_min = g_value_get_int (value);
      break;
    case ARG_LOWPASS_FREQ:
      lame->lowpass_freq = g_value_get_int (value);
      break;
    case ARG_LOWPASS_WIDTH:
      lame->lowpass_width = g_value_get_int (value);
      break;
    case ARG_HIGHPASS_FREQ:
      lame->highpass_freq = g_value_get_int (value);
      break;
    case ARG_HIGHPASS_WIDTH:
      lame->highpass_width = g_value_get_int (value);
      break;
    case ARG_ATH_ONLY:
      lame->ath_only = g_value_get_boolean (value);
      break;
    case ARG_ATH_SHORT:
      lame->ath_short = g_value_get_boolean (value);
      break;
    case ARG_NO_ATH:
      lame->no_ath = g_value_get_boolean (value);
      break;
//    case ARG_ATH_TYPE:
//      lame->ath_type = G_VALUE_INT (*arg);
//      break;
    case ARG_ATH_LOWER:
      lame->ath_lower = g_value_get_int (value);
      break;
    case ARG_CWLIMIT:
      lame->cwlimit = g_value_get_int (value);
      break;
    case ARG_ALLOW_DIFF_SHORT:
      lame->allow_diff_short = g_value_get_boolean (value);
      break;
    case ARG_NO_SHORT_BLOCKS:
      lame->no_short_blocks = g_value_get_boolean (value);
      break;
    case ARG_EMPHASIS:
      lame->emphasis = g_value_get_boolean (value);
      break;
    default:
      break;
  }

}

static void
gst_lame_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
  GstLame *lame;

  /* it's not null if we got it, but it might not be ours */
  g_return_if_fail (GST_IS_LAME (object));

  lame = GST_LAME (object);

  switch (prop_id) {
    case ARG_BITRATE:
      g_value_set_int (value, lame->bitrate);
      break;
    case ARG_COMPRESSION_RATIO:
      g_value_set_float (value, lame->compression_ratio);
      break;
    case ARG_QUALITY:
      g_value_set_enum (value, lame->quality);
      break;
    case ARG_MODE:
      g_value_set_enum (value, lame->mode);
      break;
    case ARG_FORCE_MS:
      g_value_set_boolean (value, lame->force_ms);
      break;
    case ARG_FREE_FORMAT:
      g_value_set_boolean (value, lame->free_format);
      break;
    case ARG_COPYRIGHT:
      g_value_set_boolean (value, lame->copyright);
      break;
    case ARG_ORIGINAL:
      g_value_set_boolean (value, lame->original);
      break;
    case ARG_ERROR_PROTECTION:
      g_value_set_boolean (value, lame->error_protection);
      break;
    case ARG_PADDING_TYPE:
      g_value_set_enum (value, lame->padding_type);
      break;
    case ARG_EXTENSION:
      g_value_set_boolean (value, lame->extension);
      break;
    case ARG_STRICT_ISO:
      g_value_set_boolean (value, lame->strict_iso);
      break;
    case ARG_DISABLE_RESERVOIR:
      g_value_set_boolean (value, lame->disable_reservoir);
      break;
    case ARG_VBR:
      g_value_set_boolean (value, lame->vbr);
      break;
    case ARG_VBR_MEAN_BITRATE:
      g_value_set_int (value, lame->vbr_mean_bitrate);
      break;
    case ARG_VBR_MIN_BITRATE:
      g_value_set_int (value, lame->vbr_min_bitrate);
      break;
    case ARG_VBR_MAX_BITRATE:
      g_value_set_int (value, lame->vbr_max_bitrate);
      break;
    case ARG_VBR_HARD_MIN:
      g_value_set_int (value, lame->vbr_hard_min);
      break;
    case ARG_LOWPASS_FREQ:
      g_value_set_int (value, lame->lowpass_freq);
      break;
    case ARG_LOWPASS_WIDTH:
      g_value_set_int (value, lame->lowpass_width);
      break;
    case ARG_HIGHPASS_FREQ:
      g_value_set_int (value, lame->highpass_freq);
      break;
    case ARG_HIGHPASS_WIDTH:
      g_value_set_int (value, lame->highpass_width);
      break;
    case ARG_ATH_ONLY:
      g_value_set_boolean (value, lame->ath_only);
      break;
    case ARG_ATH_SHORT:
      g_value_set_boolean (value, lame->ath_short);
      break;
    case ARG_NO_ATH:
      g_value_set_boolean (value, lame->no_ath);
      break;
//    case ARG_ATH_TYPE:
//      G_VALUE_INT (*arg) = lame->ath_type;
//      break;
    case ARG_ATH_LOWER:
      g_value_set_int (value, lame->ath_lower);
      break;
    case ARG_CWLIMIT:
      g_value_set_int (value, lame->cwlimit);
      break;
    case ARG_ALLOW_DIFF_SHORT:
      g_value_set_boolean (value, lame->allow_diff_short);
      break;
    case ARG_NO_SHORT_BLOCKS:
      g_value_set_boolean (value, lame->no_short_blocks);
      break;
    case ARG_EMPHASIS:
      g_value_set_boolean (value, lame->emphasis);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

static void
gst_lame_chain (GstPad *pad, GstBuffer *buf)
{
  GstLame *lame;
  GstBuffer *outbuf;
  gchar *mp3_data;
  gint mp3_buffer_size, mp3_size = 0;

  g_return_if_fail (pad != NULL);
  lame = GST_LAME (gst_pad_get_parent (pad));

  GST_DEBUG (0,"entered\n");

  mp3_buffer_size = ((GST_BUFFER_SIZE(buf) / (2+lame->num_channels)) * 1.25) + 7200;
  mp3_data = g_malloc (mp3_buffer_size);

  if (lame->num_channels == 2) {
    mp3_size = lame_encode_buffer_interleaved (lame->lgf, (short int *)(GST_BUFFER_DATA (buf)),
              GST_BUFFER_SIZE (buf) / 4, mp3_data, mp3_buffer_size);
  }
  else {
    mp3_size = lame_encode_buffer (lame->lgf, 
		    (short int *)(GST_BUFFER_DATA (buf)),
    		    (short int *)(GST_BUFFER_DATA (buf)),
               	    GST_BUFFER_SIZE (buf) / 2, 
		    mp3_data, mp3_buffer_size);
  }

  GST_DEBUG (0,"encoded %d bytes of audio to %d bytes of mp3\n",GST_BUFFER_SIZE (buf), mp3_size);
  gst_buffer_unref(buf);
  
  if (mp3_size > 0) {
    outbuf = gst_buffer_new ();
    GST_BUFFER_DATA (outbuf) = mp3_data;
    GST_BUFFER_SIZE (outbuf) = mp3_size;

    gst_pad_push(lame->srcpad,outbuf);
  }
  else g_free (mp3_data);

}

/* transition to the READY state by configuring the gst_lame encoder */
static gboolean
gst_lame_setup (GstLame *lame)
{
  GST_DEBUG_ENTER("(\"%s\")", gst_element_get_name (GST_ELEMENT (lame)));

  // copy the parameters over
  lame_set_in_samplerate(lame->lgf, lame->samplerate);
  // force mono encoding if we only have one channel
  if (lame->num_channels == 1) 
    lame->mode = 3;

  lame_set_brate(lame->lgf, lame->bitrate);
  lame_set_compression_ratio(lame->lgf, lame->compression_ratio);
  lame_set_quality(lame->lgf, lame->quality);
  lame_set_mode(lame->lgf, lame->mode);
  lame_set_force_ms(lame->lgf, lame->force_ms);
  lame_set_free_format(lame->lgf, lame->free_format);
  lame_set_copyright(lame->lgf, lame->copyright);
  lame_set_original(lame->lgf, lame->original);
  lame_set_error_protection(lame->lgf, lame->error_protection);
  lame_set_padding_type(lame->lgf, lame->padding_type);
  lame_set_extension(lame->lgf, lame->extension);
  lame_set_strict_ISO(lame->lgf, lame->strict_iso);
  lame_set_disable_reservoir(lame->lgf, lame->disable_reservoir);
  lame_set_VBR_q(lame->lgf, lame->vbr);
  lame_set_VBR_mean_bitrate_kbps(lame->lgf, lame->vbr_mean_bitrate);
  lame_set_VBR_min_bitrate_kbps(lame->lgf, lame->vbr_min_bitrate);
  lame_set_VBR_max_bitrate_kbps(lame->lgf, lame->vbr_max_bitrate);
  lame_set_VBR_hard_min(lame->lgf, lame->vbr_hard_min);
  lame_set_lowpassfreq(lame->lgf, lame->lowpass_freq);
  lame_set_lowpasswidth(lame->lgf, lame->lowpass_width);
  lame_set_highpassfreq(lame->lgf, lame->highpass_freq);
  lame_set_highpasswidth(lame->lgf, lame->highpass_width);
  lame_set_ATHonly(lame->lgf, lame->ath_only);
  lame_set_ATHshort(lame->lgf, lame->ath_short);
  lame_set_noATH(lame->lgf, lame->no_ath);
//  lame_set_ATHtype(lame->lgf, lame->ath_type);
  lame_set_ATHlower(lame->lgf, lame->ath_lower);
  lame_set_cwlimit(lame->lgf, lame->cwlimit);
  lame_set_allow_diff_short(lame->lgf, lame->allow_diff_short);
  lame_set_no_short_blocks(lame->lgf, lame->no_short_blocks);
  lame_set_emphasis(lame->lgf, lame->emphasis);

  // initialize the lame encoder
  if (lame_init_params(lame->lgf) < 0) {
    GST_DEBUG (0,"error initializinglame library\n");
    return FALSE;
  }

  GST_DEBUG_LEAVE("");

  return TRUE;
}

static GstElementStateReturn
gst_lame_change_state (GstElement *element)
{
  g_return_val_if_fail (GST_IS_LAME (element), GST_STATE_FAILURE);

  GST_DEBUG (0,"state pending %d\n", GST_STATE_PENDING (element));

  /* if going down into NULL state, close the file if it's open */
  if (GST_STATE_PENDING (element) == GST_STATE_READY) {
    gst_lame_setup(GST_LAME(element));
  }

  /* if we haven't failed already, give the parent class a chance to ;-) */
  if (GST_ELEMENT_CLASS (parent_class)->change_state)
    return GST_ELEMENT_CLASS (parent_class)->change_state (element);

  return GST_STATE_SUCCESS;
}

static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
  GstElementFactory *factory;

  /* create an elementfactory for the gst_lame element */
  factory = gst_elementfactory_new ("lame", GST_TYPE_LAME,
                                    &gst_lame_details);
  g_return_val_if_fail (factory != NULL, FALSE);

  /* register the source's padtemplate */
  gst_elementfactory_add_padtemplate (factory, 
  		GST_PADTEMPLATE_GET (gst_lame_src_factory));

  /* register the sink's padtemplate */
  gst_elementfactory_add_padtemplate (factory, 
  		GST_PADTEMPLATE_GET (gst_lame_sink_factory));

  /* and add the gst_lame element factory to the plugin */
  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));

  return TRUE;
}

GstPluginDesc plugin_desc = {
  GST_VERSION_MAJOR,
  GST_VERSION_MINOR,
  "lame",
  plugin_init
};