/* -*- c-file-style: "gnu" -*- */
/*
  Copyright (C) 2005 Commonwealth Scientific and Industrial Research
  Organisation (CSIRO) Australia

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:

  - Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.

  - Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.

  - Neither the name of CSIRO Australia nor the names of its
  contributors may be used to endorse or promote products derived from
  this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

  Author: David Kuehling <dvdkhlng@gmx.de>
  Created: 20041231
*/

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef WIN32
#include <strings.h>
#endif
#include <fcntl.h>
#include <assert.h>

#include <getopt.h>
#include <errno.h>

#include "oggz/oggz.h"
#include "oggz_tools.h"

#ifdef WIN32                                                                   
#define strcasecmp _stricmp
#endif  

#define READ_SIZE 4096
#define WRITE_SIZE 4096

typedef struct {
  OGGZ *reader;
  FILE *outfile;
  int numwrite;
  OggzTable *streams;
  int verbose;
  OggzTable *serialno_table;
  OggzTable *stream_index_table;
  OggzTable *content_types_table;
} ORData;

typedef struct {
  long serialno;
  int streamid;
  const char *content_type;
  int bos;
} ORStream;

static int streamid_count = 0;

static void
usage (char * progname)
{
  printf ("Usage: %s [options] filename ...\n", progname);
  printf ("\nFilter options\n");
  printf ("  These options can be used multiple times. Pages matching ANY of\n");
  printf ("  the filter options will be included into the output.\n\n");
  printf ("  -s serialno, --serialno serialno\n");
  printf ("                         Output streams with given serialno.\n");
  printf ("  -i index, --stream-index index\n");
  printf ("                         Filter by stream index. These are assigned to\n");
  printf ("                         streams in the order of their BOS pages,\n");
  printf ("                         starting at 0.\n");
  printf ("  -c content-type --content-type content-type\n");
  printf ("                         Filter by content-type. Run oggz-known-codecs\n");
  printf ("                         for a list of codec names which can be detected\n");
  printf ("                         by this version of oggz.\n");
  printf ("\nMiscellaneous options\n");
  printf ("  -o filename, --output filename\n");
  printf ("                         Specify output filename\n");
  printf ("  -h, --help             Display this help and exit\n");
  printf ("  -v, --version          Output version information and exit\n");
  printf ("  -V, --verbose          Verbose operation\n");
  printf ("\n");
  printf ("Please report bugs to <ogg-dev@xiph.org>\n");
}

static ORData *
ordata_new ()
{
  ORData *ordata = malloc (sizeof (ORData));
  assert (ordata != NULL);
  memset (ordata, 0, sizeof (ORData));
  
  ordata->streams = oggz_table_new ();
  assert (ordata->streams != NULL);

  ordata->serialno_table = oggz_table_new();
  assert (ordata->serialno_table != NULL);

  ordata->stream_index_table = oggz_table_new();
  assert (ordata->stream_index_table != NULL);

  ordata->content_types_table = oggz_table_new();
  assert (ordata->content_types_table != NULL);
  
  return ordata;
}

static void 
ordata_delete (ORData *ordata)
{
  oggz_table_delete (ordata->streams);
  oggz_table_delete (ordata->serialno_table);
  oggz_table_delete (ordata->stream_index_table);
  oggz_table_delete (ordata->content_types_table);
  
  if (ordata->reader)
    oggz_close (ordata->reader);
  if (ordata->outfile)
    fclose (ordata->outfile);
  
  free (ordata);
}

static int
filter_stream_p (const ORData *ordata, ORStream *stream, 
		 const ogg_page *og, long serialno)
{
  int i, n;
  
  if (oggz_table_lookup (ordata->serialno_table, serialno) != NULL)
    return 1;

  if (stream == NULL)
    return 0;

  if (oggz_table_lookup (ordata->stream_index_table, (long)stream->streamid) != NULL)
    return 1;

  n = oggz_table_size (ordata->content_types_table);
  for (i = 0; i < n; i++) {
    char * c = oggz_table_nth (ordata->content_types_table, i, NULL);
    if (strcasecmp (c, stream->content_type) == 0)
      return 1;
  }

  return 0;
}

static ORStream *
orstream_new (OGGZ *oggz, const ORData *ordata, const ogg_page *og, 
                long serialno)
{
  const char * ident;
  
  ORStream *stream = malloc (sizeof (ORStream));
  assert (stream != NULL);

  stream->serialno = serialno;
  stream->streamid = streamid_count++;
  stream->content_type = "unknown";

  stream->content_type = oggz_stream_get_content_type (oggz, serialno);
   
  if (ordata->verbose)
    fprintf (stderr, 
	     "New logical stream, serialno %li, id %i, codec %s, will be %s\n",
	     stream->serialno, stream->streamid, stream->content_type,
	     (filter_stream_p (ordata, stream, og, serialno) ? 
	      "copied" :"dropped"));

  return stream;
}

static void 
orstream_delete (ORData *ordata, ORStream *stream)
{
  if (ordata->verbose)
    fprintf (stderr, "End of logical stream %li   \n", stream->serialno);

  free (stream);
}

static void
checked_fwrite (const void *data, size_t size, size_t count, FILE *stream)
{
  int n = fwrite (data, size, count, stream);
  if ((size_t)n != count) {
    perror ("write failed");
    exit (1);
  }
}

static int
rip_page (OGGZ * oggz, const ogg_page * og, long serialno, void * user_data)
{
  ORData *ordata = (ORData *) user_data;
  ORStream *stream = oggz_table_lookup (ordata->streams, serialno);

  checked_fwrite (og->header, 1, og->header_len, ordata->outfile);
  checked_fwrite (og->body, 1, og->body_len, ordata->outfile);

  if (ogg_page_eos ((ogg_page *)og) && stream != NULL) {
    oggz_table_remove (ordata->streams, serialno);
    orstream_delete (ordata, stream);
  }

  return 0;
}

static int
read_page (OGGZ *oggz, const ogg_page *og, long serialno, void *user_data)
{
  ORData *ordata = (ORData *) user_data;
  ORStream *stream = oggz_table_lookup (ordata->streams, serialno);

  if (ogg_page_bos ((ogg_page *)og)) {
    stream = orstream_new (oggz, ordata, og, serialno);
    stream = oggz_table_insert (ordata->streams, serialno, stream);
    assert (stream != NULL);

    if (filter_stream_p (ordata, stream, og, serialno)) {
      oggz_set_read_page (oggz, serialno, rip_page, user_data);
      rip_page (oggz, og, serialno, user_data);
    }
  }

  return 0;
}

static int
oggz_rip (ORData * ordata)
{
  long n;

  oggz_set_read_page (ordata->reader, -1, read_page, ordata);
  
  while ((n = oggz_read (ordata->reader, READ_SIZE)) != 0) {
    if (ordata->verbose) {
      fprintf (stderr, "\r Read %li k, wrote %li k ...\r",
	       (long) (oggz_tell (ordata->reader)/1024),
	       (long) (ftell (ordata->outfile)/1024));
    }
  }

  if (ordata->verbose) 
    fprintf (stderr, "\r Done.                                 \n");

  return 0;
}

static int 
or_get_long (const char *optarg, const char *currentopt,
			long *value)
{
  char *tailptr;

  *value = strtol (optarg, &tailptr, 10);

  if (*tailptr != '\0') {
    fprintf (stderr, "ERROR: non-integer argument to option `%s': %s\n",
	     currentopt, optarg);
    return -1;
  }

  return 0;
}

int
main (int argc, char * argv[]) 
{
  int show_version = 0;
  int show_help = 0;

  char * progname;
  char * infilename = NULL, * outfilename = NULL;
  FILE * infile = NULL;
  const char *currentopt = argv[1];
  ORData * ordata;
  long l;
  int i, n;

  char * optstring = "hvVo:s:i:c:";

#ifdef HAVE_GETOPT_LONG
  static struct option long_options[] = {
    {"help", no_argument, 0, 'h'},
    {"version", no_argument, 0, 'v'},
    {"output", required_argument, 0, 'o'},
    {"verbose", no_argument, 0, 'V'},
    {"serialno", required_argument, 0, 's'},
    {"stream-index", required_argument, 0, 'i'},
    {"content-type", required_argument, 0, 'c'},
    {0,0,0,0}
  };
#endif

  ot_init();

  progname = argv[0];

  if (argc < 2) {
    usage (progname);
    return (1);
  }

  if (!strncmp (argv[1], "-?", 2)) {
#ifdef HAVE_GETOPT_LONG
    ot_print_options (long_options, optstring);
#else
    ot_print_short_options (optstring);
#endif
    exit (0);
  }

  ordata = ordata_new ();

  while (1) {
#ifdef HAVE_GETOPT_LONG
    i = getopt_long (argc, argv, optstring, long_options, NULL);
#else
    i = getopt (argc, argv, optstring);
#endif
    if (i == -1) break;
    if (i == ':') {
      usage (progname);
      goto exit_err;
    }

    switch (i) {
    case 'h': /* help */
      show_help = 1;
      break;
    case 'v': /* version */
      show_version = 1;
      break;
    case 'o': /* output */
      outfilename = optarg;
      break;
    case 'V': /* verbose */
      ordata->verbose = 1;
      break;
    case 's': /* serialno */
      if (or_get_long (optarg, currentopt, &l))
	goto exit_err;
      oggz_table_insert (ordata->serialno_table, l, (void *)0x7);
      break;
    case 'i': /* stream index */
      if (or_get_long (optarg, currentopt, &l))
	goto exit_err;
      oggz_table_insert (ordata->stream_index_table, l, (void *)0x7);
      break;
    case 'c': /* content-type */
      n = oggz_table_size (ordata->content_types_table);
      oggz_table_insert (ordata->content_types_table, (long)n, optarg);
      break;
    default:
      break;
    }

    currentopt = argv[optind];
  }

  if (show_version) {
    printf ("%s version " VERSION "\n", progname);
  }

  if (show_help) {
    usage (progname);
  }

  if (show_version || show_help) {
    goto exit_ok;
  }

  if (optind != argc-1) {
    usage (progname);
    goto exit_err;
  }

  infilename = argv[optind];
  infile = fopen (infilename, "rb");
  if (infile == NULL) {
    fprintf (stderr, "%s: unable to open input file %s : %s\n", progname,
	     infilename, strerror (errno));
    goto exit_err;
  } else {
    ordata->reader = oggz_open_stdio (infile, OGGZ_READ|OGGZ_AUTO);
  }

  if (outfilename == NULL) {
    ordata->outfile = stdout;
  } else {
    ordata->outfile = fopen (outfilename, "wb");
    if (ordata->outfile == NULL) {
      fprintf (stderr, "%s: unable to open output file %s : %s\n",
	       progname, outfilename, strerror (errno));
      goto exit_err;
    }
  }

  oggz_rip (ordata);

 exit_ok:
  ordata_delete (ordata);
  exit (0);

 exit_err:
  ordata_delete (ordata);
  exit (1);
}