/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wtay@chello.be>
 *
 * gstafsink.c: 
 *
 * 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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */


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

#include "gst/gst-i18n-plugin.h"

#include <gst/gst.h>
#include <string.h>
#include <errno.h>

#include "gstafsink.h"

/* AFSink signals and args */
enum
{
  /* FILL ME */
  SIGNAL_HANDOFF,
  LAST_SIGNAL
};

enum
{
  ARG_0,
  ARG_TYPE,
  ARG_OUTPUT_ENDIANNESS,
  ARG_LOCATION
};

/* added a sink factory function to force audio/raw MIME type */
/* I think the caps can be broader, we need to change that somehow */
static GstStaticPadTemplate afsink_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("audio/x-raw-int, "
        "rate = (int) [ 1, MAX ], "
        "channels = (int) [ 1, 2 ], "
        "endianness = (int) BYTE_ORDER, "
        "width = (int) { 8, 16 }, "
        "depth = (int) { 8, 16 }, " "signed = (boolean) { true, false }")
    );

/* we use an enum for the output type arg */

#define GST_TYPE_AFSINK_TYPES (gst_afsink_types_get_type())
/* FIXME: fix the string ints to be string-converted from the audiofile.h types */
static GType
gst_afsink_types_get_type (void)
{
  static GType afsink_types_type = 0;
  static const GEnumValue afsink_types[] = {
    {AF_FILE_RAWDATA, "0", "raw PCM"},
    {AF_FILE_AIFFC, "1", "AIFFC"},
    {AF_FILE_AIFF, "2", "AIFF"},
    {AF_FILE_NEXTSND, "3", "Next/SND"},
    {AF_FILE_WAVE, "4", "Wave"},
    {0, NULL, NULL},
  };

  if (!afsink_types_type) {
    afsink_types_type =
        g_enum_register_static ("GstAudiosinkTypes", afsink_types);
  }
  return afsink_types_type;
}

static void gst_afsink_base_init (gpointer g_class);
static void gst_afsink_class_init (GstAFSinkClass * klass);
static void gst_afsink_init (GstAFSink * afsink);

static gboolean gst_afsink_open_file (GstAFSink * sink);
static void gst_afsink_close_file (GstAFSink * sink);

static void gst_afsink_chain (GstPad * pad, GstData * _data);

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

static gboolean gst_afsink_handle_event (GstPad * pad, GstEvent * event);

static GstStateChangeReturn gst_afsink_change_state (GstElement * element,
    GstStateChange transition);

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

GType
gst_afsink_get_type (void)
{
  static GType afsink_type = 0;

  if (!afsink_type) {
    static const GTypeInfo afsink_info = {
      sizeof (GstAFSinkClass),
      gst_afsink_base_init,
      NULL,
      (GClassInitFunc) gst_afsink_class_init,
      NULL,
      NULL,
      sizeof (GstAFSink),
      0,
      (GInstanceInitFunc) gst_afsink_init,
    };

    afsink_type =
        g_type_register_static (GST_TYPE_ELEMENT, "GstAFSink", &afsink_info, 0);
  }
  return afsink_type;
}

static void
gst_afsink_base_init (gpointer g_class)
{
  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);

  gst_element_class_add_pad_template (element_class,
      gst_static_pad_template_get (&afsink_sink_factory));
  gst_element_class_set_static_metadata (element_class, "Audiofile sink",
      "Sink/Audio",
      "Write audio streams to disk using libaudiofile",
      "Thomas Vander Stichele <thomas@apestaart.org>");
}

static void
gst_afsink_class_init (GstAFSinkClass * klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;

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

  parent_class = g_type_class_peek_parent (klass);

  gst_element_class_install_std_props (GST_ELEMENT_CLASS (klass),
      "location", ARG_LOCATION, G_PARAM_READWRITE, NULL);

  /* FIXME: add long property descriptions */
  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TYPE,
      g_param_spec_enum ("type", "type", "type", GST_TYPE_AFSINK_TYPES, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
  g_object_class_install_property (G_OBJECT_CLASS (klass),
      ARG_OUTPUT_ENDIANNESS, g_param_spec_int ("endianness", "endianness",
          "endianness", G_MININT, G_MAXINT, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  gst_afsink_signals[SIGNAL_HANDOFF] =
      g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
      G_STRUCT_OFFSET (GstAFSinkClass, handoff), NULL, NULL,
      g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);


  gobject_class->set_property = gst_afsink_set_property;
  gobject_class->get_property = gst_afsink_get_property;

  gstelement_class->change_state = gst_afsink_change_state;
}

static void
gst_afsink_init (GstAFSink * afsink)
{
  /* GstPad *pad;   this is now done in the struct */

  afsink->sinkpad =
      gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
          (afsink), "sink"), "sink");
  gst_element_add_pad (GST_ELEMENT (afsink), afsink->sinkpad);

  gst_pad_set_chain_function (afsink->sinkpad, gst_afsink_chain);

  afsink->filename = NULL;
  afsink->file = NULL;
  /* default values, should never be needed */
  afsink->channels = 2;
  afsink->width = 16;
  afsink->rate = 44100;
  afsink->type = AF_FILE_WAVE;
  afsink->endianness_data = 1234;
  afsink->endianness_wanted = 1234;
}

static void
gst_afsink_set_property (GObject * object, guint prop_id, const GValue * value,
    GParamSpec * pspec)
{
  GstAFSink *sink;

  sink = GST_AFSINK (object);

  switch (prop_id) {
    case ARG_LOCATION:
      /* the element must be stopped or paused in order to do this */
      g_return_if_fail ((GST_STATE (sink) < GST_STATE_PLAYING)
          || (GST_STATE (sink) == GST_STATE_PAUSED));
      g_free (sink->filename);
      sink->filename = g_strdup (g_value_get_string (value));
      if ((GST_STATE (sink) == GST_STATE_PAUSED)
          && (sink->filename != NULL)) {
        gst_afsink_close_file (sink);
        gst_afsink_open_file (sink);
      }

      break;
    case ARG_TYPE:
      sink->type = g_value_get_enum (value);
      break;
    case ARG_OUTPUT_ENDIANNESS:
    {
      int end = g_value_get_int (value);

      if (end == 1234 || end == 4321)
        sink->endianness_output = end;
    }
      break;
    default:
      break;
  }
}

static void
gst_afsink_get_property (GObject * object, guint prop_id, GValue * value,
    GParamSpec * pspec)
{
  GstAFSink *sink;

  g_return_if_fail (GST_IS_AFSINK (object));

  sink = GST_AFSINK (object);

  switch (prop_id) {
    case ARG_LOCATION:
      g_value_set_string (value, sink->filename);
      break;
    case ARG_TYPE:
      g_value_set_enum (value, sink->type);
      break;
    case ARG_OUTPUT_ENDIANNESS:
      g_value_set_int (value, sink->endianness_output);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

gboolean
gst_afsink_plugin_init (GstPlugin * plugin)
{
  if (!gst_element_register (plugin, "afsink", GST_RANK_NONE, GST_TYPE_AFSINK))
    return FALSE;
#ifdef ENABLE_NLS
  setlocale (LC_ALL, "");
  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
#endif /* ENABLE_NLS */

  return TRUE;
}

/* this is where we open the audiofile */
static gboolean
gst_afsink_open_file (GstAFSink * sink)
{
  AFfilesetup outfilesetup;
  const GstCaps *caps;
  GstStructure *structure;
  int sample_format;            /* audiofile's sample format, look in audiofile.h */
  int byte_order = 0;           /* audiofile's byte order defines */

  g_return_val_if_fail (!GST_OBJECT_FLAG_IS_SET (sink, GST_AFSINK_OPEN), FALSE);

  /* get the audio parameters */
  g_return_val_if_fail (GST_IS_PAD (sink->sinkpad), FALSE);
  caps = GST_PAD_CAPS (sink->sinkpad);

  if (caps == NULL) {
    g_critical ("gstafsink chain : Could not get caps of pad !\n");
  } else {
    structure = gst_caps_get_structure (caps, 0);
    gst_structure_get_int (structure, "channels", &sink->channels);
    gst_structure_get_int (structure, "width", &sink->width);
    gst_structure_get_int (structure, "rate", &sink->rate);
    gst_structure_get_boolean (structure, "signed", &sink->is_signed);
    gst_structure_get_int (structure, "endianness", &sink->endianness_data);
  }
  GST_DEBUG ("channels %d, width %d, rate %d, signed %s",
      sink->channels, sink->width, sink->rate, sink->is_signed ? "yes" : "no");
  GST_DEBUG ("endianness: data %d, output %d",
      sink->endianness_data, sink->endianness_output);
  /* setup the output file */
  if (sink->is_signed)
    sample_format = AF_SAMPFMT_TWOSCOMP;
  else
    sample_format = AF_SAMPFMT_UNSIGNED;
  /* FIXME : this check didn't seem to work, so let the output endianness be set */
  /*
     if (sink->endianness_data == sink->endianness_wanted)
     byte_order = AF_BYTEORDER_LITTLEENDIAN;
     else
     byte_order = AF_BYTEORDER_BIGENDIAN;
   */
  if (sink->endianness_output == 1234)
    byte_order = AF_BYTEORDER_LITTLEENDIAN;
  else
    byte_order = AF_BYTEORDER_BIGENDIAN;

  outfilesetup = afNewFileSetup ();
  afInitFileFormat (outfilesetup, sink->type);
  afInitChannels (outfilesetup, AF_DEFAULT_TRACK, sink->channels);
  afInitRate (outfilesetup, AF_DEFAULT_TRACK, sink->rate);
  afInitSampleFormat (outfilesetup, AF_DEFAULT_TRACK,
      sample_format, sink->width);

  /* open it */
  sink->file = afOpenFile (sink->filename, "w", outfilesetup);
  if (sink->file == AF_NULL_FILEHANDLE) {
    GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
        (_("Could not open file \"%s\" for writing."), sink->filename),
        ("system error: %s", strerror (errno)));
    return FALSE;
  }

  afFreeFileSetup (outfilesetup);
/*  afSetVirtualByteOrder (sink->file, AF_DEFAULT_TRACK, byte_order); */

  GST_OBJECT_FLAG_SET (sink, GST_AFSINK_OPEN);

  return TRUE;
}

static void
gst_afsink_close_file (GstAFSink * sink)
{
/*  g_print ("DEBUG: closing sinkfile...\n"); */
  g_return_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_AFSINK_OPEN));
/*  g_print ("DEBUG: past flag test\n"); */
/*  if (fclose (sink->file) != 0) */
  if (afCloseFile (sink->file) != 0) {
    GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE,
        (_("Error closing file \"%s\"."), sink->filename), GST_ERROR_SYSTEM);
  } else {
    GST_OBJECT_FLAG_UNSET (sink, GST_AFSINK_OPEN);
  }
}

/**
 * gst_afsink_chain:
 * @pad: the pad this afsink is connected to
 * @buf: the buffer that has to be absorbed
 *
 * take the buffer from the pad and write to file if it's open
 */
static void
gst_afsink_chain (GstPad * pad, GstData * _data)
{
  GstBuffer *buf;
  GstAFSink *afsink;
  int ret = 0;

  g_return_if_fail (pad != NULL);
  g_return_if_fail (GST_IS_PAD (pad));

  if (GST_IS_EVENT (_data)) {
    gst_afsink_handle_event (pad, GST_EVENT (_data));
    return;
  }

  buf = GST_BUFFER (_data);
  afsink = GST_AFSINK (gst_pad_get_parent (pad));
/* we use audiofile now
  if (GST_OBJECT_FLAG_IS_SET (afsink, GST_AFSINK_OPEN))
  {
    bytes_written = fwrite (GST_BUFFER_DATA (buf), 1, GST_BUFFER_SIZE (buf), afsink->file);
    if (bytes_written < GST_BUFFER_SIZE (buf))
    {
      printf ("afsink : Warning : %d bytes should be written, only %d bytes written\n",
                  GST_BUFFER_SIZE (buf), bytes_written);
    }
  }
*/

  if (!GST_OBJECT_FLAG_IS_SET (afsink, GST_AFSINK_OPEN)) {
    /* it's not open yet, open it */
    if (!gst_afsink_open_file (afsink))
      g_print ("WARNING: gstafsink: can't open file !\n");
/*        return FALSE;    Can't return value */
  }

  if (GST_OBJECT_FLAG_IS_SET (afsink, GST_AFSINK_OPEN)) {
    int frameCount = 0;

    frameCount =
        GST_BUFFER_SIZE (buf) / ((afsink->width / 8) * afsink->channels);
    /*   g_print ("DEBUG: writing %d frames ", frameCount); */
    ret = afWriteFrames (afsink->file, AF_DEFAULT_TRACK,
        GST_BUFFER_DATA (buf), frameCount);
    if (ret == AF_BAD_WRITE || ret == AF_BAD_LSEEK) {
      printf ("afsink : Warning : afWriteFrames returned an error (%d)\n", ret);
    }
  }

  gst_buffer_unref (buf);

  g_signal_emit (G_OBJECT (afsink), gst_afsink_signals[SIGNAL_HANDOFF], 0);
}

static GstStateChangeReturn
gst_afsink_change_state (GstElement * element, GstStateChange transition)
{
  g_return_val_if_fail (GST_IS_AFSINK (element), GST_STATE_CHANGE_FAILURE);

  /* if going to NULL? then close the file */
  if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
/*    printf ("DEBUG: afsink state change: null pending\n"); */
    if (GST_OBJECT_FLAG_IS_SET (element, GST_AFSINK_OPEN)) {
/*      g_print ("DEBUG: trying to close the sink file\n"); */
      gst_afsink_close_file (GST_AFSINK (element));
    }
  }
/*

  else
  this has been moved to the chain function, since it's only then that 
 the caps are set and can be known 
 {
    g_print ("DEBUG: it's not going to null\n"); 
    if (!GST_OBJECT_FLAG_IS_SET (element, GST_AFSINK_OPEN)) 
    {
      g_print ("DEBUG: GST_AFSINK_OPEN not set\n"); 
      if (!gst_afsink_open_file (GST_AFSINK (element)))
      {
        g_print ("DEBUG: element tries to open file\n"); 
        return GST_STATE_CHANGE_FAILURE;
      }
    }
  }
*/

  if (GST_ELEMENT_CLASS (parent_class)->change_state)
    return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  return GST_STATE_CHANGE_SUCCESS;
}

/* this function was copied from sinesrc */

static gboolean
gst_afsink_handle_event (GstPad * pad, GstEvent * event)
{
  GstAFSink *afsink;

  afsink = GST_AFSINK (gst_pad_get_parent (pad));
  GST_DEBUG ("DEBUG: afsink: got event");

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_EOS:
      gst_afsink_close_file (afsink);
      break;
    default:
      break;
  }

  gst_pad_event_default (pad, event);

  return TRUE;
}
