/*
   Copyright (C) 2003 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.
*/

#include "config.h"

#include <string.h>

#include "oggz/oggz.h"

#include "oggz_tests.h"

/* #define DEBUG */

#define DATA_BUF_LEN 1024

static long serialno;
static int read_called = 0;

static int
hungry (OGGZ * oggz, int empty, void * user_data)
{
  unsigned char buf[1];
  ogg_packet op;
  static int iter = 0;
  static long b_o_s = 1;
  static long e_o_s = 0;

  if (iter > 10) return 1;

  buf[0] = 'a' + iter;

  op.packet = buf;
  op.bytes = 1;
  op.b_o_s = b_o_s;
  op.e_o_s = e_o_s;
  op.granulepos = iter;
  op.packetno = iter;

  /* Main check */
   if (oggz_write_feed (oggz, &op, serialno, 0, NULL) != 0)
    FAIL ("Oggz write failed");

  iter++;
  b_o_s = 0;
  if (iter == 10) e_o_s = 1;
  
  return 0;
}

static int
read_packet (OGGZ * oggz, oggz_packet * zp, long serialno, void * user_data)
{
  ogg_packet * op = &zp->op;
  static int iter = 0;
  static long b_o_s = 1;
  static long e_o_s = 0;

#ifdef DEBUG
  printf ("%08" PRI_OGGZ_OFF_T "x: serialno %010lu, "
	  "granulepos %" PRId64 ", packetno %" PRId64,
	  oggz_tell (oggz), serialno, op->granulepos, op->packetno);

  if (op->b_o_s) {
    printf (" *** bos");
  }

  if (op->e_o_s) {
    printf (" *** eos");
  }

  printf ("\n");
#endif

  if (op->bytes != 1)
    FAIL ("Packet too long");

  if (op->packet[0] != 'a' + iter)
    FAIL ("Packet contains incorrect data");

  if ((op->b_o_s == 0) != (b_o_s == 0))
    FAIL ("Packet has incorrect b_o_s");

  if ((op->e_o_s == 0) != (e_o_s == 0))
    FAIL ("Packet has incorrect e_o_s");

  if (op->granulepos != -1 && op->granulepos != iter)
    FAIL ("Packet has incorrect granulepos");

  if (op->packetno != iter)
    FAIL ("Packet has incorrect packetno");

  iter++;
  b_o_s = 0;
  if (iter == 10) e_o_s = 1;

  return 0;
}

static size_t
my_io_read (void * user_handle, void * buf, size_t n)
{
  unsigned char * data_buf = (unsigned char *)user_handle;
  static int offset = 0;
  int len;

  /* Mark that the read IO method was actually used */
  read_called++;

  len = MIN ((int)n, DATA_BUF_LEN - offset);
  memcpy (buf, &data_buf[offset], len);

  offset += len;

  return len;
}

int
main (int argc, char * argv[])
{
  OGGZ * reader, * writer;
  unsigned char data_buf[DATA_BUF_LEN];
  long n;

  INFO ("Testing override of IO reading");

  writer = oggz_new (OGGZ_WRITE);
  if (writer == NULL)
    FAIL("newly created OGGZ writer == NULL");

  serialno = oggz_serialno_new (writer);

  if (oggz_write_set_hungry_callback (writer, hungry, 1, NULL) == -1)
    FAIL("Could not set hungry callback");

  reader = oggz_new (OGGZ_READ);
  if (reader == NULL)
    FAIL("newly created OGGZ reader == NULL");

  oggz_io_set_read (reader, my_io_read, data_buf);

  oggz_set_read_callback (reader, -1, read_packet, NULL);

  n = oggz_write_output (writer, data_buf, DATA_BUF_LEN);

  if (n >= DATA_BUF_LEN)
    FAIL("Too much data generated by writer");

  oggz_read (reader, n);

  if (read_called == 0)
    FAIL("Read method ignored");

  if (oggz_close (reader) != 0)
    FAIL("Could not close OGGZ reader");

  if (oggz_close (writer) != 0)
    FAIL("Could not close OGGZ writer");

  exit (0);
}