diff --git a/jni/pjproject-android/.svn/pristine/16/161eddd3b2e2829efa567bdfc94b8bb74f9e8095.svn-base b/jni/pjproject-android/.svn/pristine/16/161eddd3b2e2829efa567bdfc94b8bb74f9e8095.svn-base
new file mode 100644
index 0000000..78a02e0
--- /dev/null
+++ b/jni/pjproject-android/.svn/pristine/16/161eddd3b2e2829efa567bdfc94b8bb74f9e8095.svn-base
@@ -0,0 +1,691 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#include <pjmedia/wav_port.h>
+#include <pjmedia/alaw_ulaw.h>
+#include <pjmedia/errno.h>
+#include <pjmedia/wave.h>
+#include <pj/assert.h>
+#include <pj/file_access.h>
+#include <pj/file_io.h>
+#include <pj/log.h>
+#include <pj/pool.h>
+#include <pj/string.h>
+
+
+#define THIS_FILE   "wav_player.c"
+
+
+#define SIGNATURE	    PJMEDIA_SIG_PORT_WAV_PLAYER
+#define BITS_PER_SAMPLE	    16
+
+#if 1
+#   define TRACE_(x)	PJ_LOG(4,x)
+#else
+#   define TRACE_(x)
+#endif
+
+#if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0
+    static void samples_to_host(pj_int16_t *samples, unsigned count)
+    {
+	unsigned i;
+	for (i=0; i<count; ++i) {
+	    samples[i] = pj_swap16(samples[i]);
+	}
+    }
+#else
+#   define samples_to_host(samples,count)
+#endif
+
+struct file_reader_port
+{
+    pjmedia_port     base;
+    unsigned	     options;
+    pjmedia_wave_fmt_tag fmt_tag;
+    pj_uint16_t	     bytes_per_sample;
+    pj_bool_t	     eof;
+    pj_uint32_t	     bufsize;
+    char	    *buf;
+    char	    *readpos;
+    char	    *eofpos;
+
+    pj_off_t	     fsize;
+    unsigned	     start_data;
+    unsigned         data_len;
+    unsigned         data_left;
+    pj_off_t	     fpos;
+    pj_oshandle_t    fd;
+
+    pj_status_t	   (*cb)(pjmedia_port*, void*);
+};
+
+
+static pj_status_t file_get_frame(pjmedia_port *this_port, 
+				  pjmedia_frame *frame);
+static pj_status_t file_on_destroy(pjmedia_port *this_port);
+
+static struct file_reader_port *create_file_port(pj_pool_t *pool)
+{
+    const pj_str_t name = pj_str("file");
+    struct file_reader_port *port;
+
+    port = PJ_POOL_ZALLOC_T(pool, struct file_reader_port);
+    if (!port)
+	return NULL;
+
+    /* Put in default values.
+     * These will be overriden once the file is read.
+     */
+    pjmedia_port_info_init(&port->base.info, &name, SIGNATURE, 
+			   8000, 1, 16, 80);
+
+    port->base.get_frame = &file_get_frame;
+    port->base.on_destroy = &file_on_destroy;
+
+
+    return port;
+}
+
+/*
+ * Fill buffer.
+ */
+static pj_status_t fill_buffer(struct file_reader_port *fport)
+{
+    pj_uint32_t size_left = fport->bufsize;
+    unsigned size_to_read;
+    pj_ssize_t size;
+    pj_status_t status;
+
+    fport->eofpos = NULL;
+    
+    while (size_left > 0) {
+
+	/* Calculate how many bytes to read in this run. */
+	size = size_to_read = size_left;
+	status = pj_file_read(fport->fd, 
+			      &fport->buf[fport->bufsize-size_left], 
+			      &size);
+	if (status != PJ_SUCCESS)
+	    return status;
+	if (size < 0) {
+	    /* Should return more appropriate error code here.. */
+	    return PJ_ECANCELLED;
+	}
+
+        if (size > (pj_ssize_t)fport->data_left) {
+            /* We passed the end of the data chunk,
+             * only count the portion read from the data chunk.
+             */
+            size = (pj_ssize_t)fport->data_left;
+        }
+
+	size_left -= (pj_uint32_t)size;
+        fport->data_left -= (pj_uint32_t)size;
+	fport->fpos += size;
+
+	/* If size is less than size_to_read, it indicates that we've
+	 * encountered EOF. Rewind the file.
+	 */
+        if (size < (pj_ssize_t)size_to_read) {
+            fport->eof = PJ_TRUE;
+            fport->eofpos = fport->buf + fport->bufsize - size_left;
+
+            if (fport->options & PJMEDIA_FILE_NO_LOOP) {
+                /* Zero remaining buffer */
+                if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_PCM) {
+                    pj_bzero(fport->eofpos, size_left);
+                } else if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ULAW) {
+                    int val = pjmedia_linear2ulaw(0);
+                    pj_memset(fport->eofpos, val, size_left);
+                } else if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ALAW) {
+                    int val = pjmedia_linear2alaw(0);
+                    pj_memset(fport->eofpos, val, size_left);
+                }
+		size_left = 0;
+            }
+
+	    /* Rewind file */
+	    fport->fpos = fport->start_data;
+	    pj_file_setpos( fport->fd, fport->fpos, PJ_SEEK_SET);
+            fport->data_left = fport->data_len;
+	}
+    }
+
+    /* Convert samples to host rep */
+    samples_to_host((pj_int16_t*)fport->buf, 
+		    fport->bufsize/fport->bytes_per_sample);
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Create WAVE player port.
+ */
+PJ_DEF(pj_status_t) pjmedia_wav_player_port_create( pj_pool_t *pool,
+						     const char *filename,
+						     unsigned ptime,
+						     unsigned options,
+						     pj_ssize_t buff_size,
+						     pjmedia_port **p_port )
+{
+    pjmedia_wave_hdr wave_hdr;
+    pj_ssize_t size_to_read, size_read;
+    struct file_reader_port *fport;
+    pjmedia_audio_format_detail *ad;
+    pj_off_t pos;
+    pj_str_t name;
+    unsigned samples_per_frame;
+    pj_status_t status = PJ_SUCCESS;
+
+
+    /* Check arguments. */
+    PJ_ASSERT_RETURN(pool && filename && p_port, PJ_EINVAL);
+
+    /* Check the file really exists. */
+    if (!pj_file_exists(filename)) {
+	return PJ_ENOTFOUND;
+    }
+
+    /* Normalize ptime */
+    if (ptime == 0)
+	ptime = 20;
+
+    /* Normalize buff_size */
+    if (buff_size < 1) buff_size = PJMEDIA_FILE_PORT_BUFSIZE;
+
+
+    /* Create fport instance. */
+    fport = create_file_port(pool);
+    if (!fport) {
+	return PJ_ENOMEM;
+    }
+
+
+    /* Get the file size. */
+    fport->fsize = pj_file_size(filename);
+
+    /* Size must be more than WAVE header size */
+    if (fport->fsize <= sizeof(pjmedia_wave_hdr)) {
+	return PJMEDIA_ENOTVALIDWAVE;
+    }
+
+    /* Open file. */
+    status = pj_file_open( pool, filename, PJ_O_RDONLY, &fport->fd);
+    if (status != PJ_SUCCESS)
+	return status;
+
+    /* Read the file header plus fmt header only. */
+    size_read = size_to_read = sizeof(wave_hdr) - 8;
+    status = pj_file_read( fport->fd, &wave_hdr, &size_read);
+    if (status != PJ_SUCCESS) {
+	pj_file_close(fport->fd);
+	return status;
+    }
+    if (size_read != size_to_read) {
+	pj_file_close(fport->fd);
+	return PJMEDIA_ENOTVALIDWAVE;
+    }
+
+    /* Normalize WAVE header fields values from little-endian to host
+     * byte order.
+     */
+    pjmedia_wave_hdr_file_to_host(&wave_hdr);
+    
+    /* Validate WAVE file. */
+    if (wave_hdr.riff_hdr.riff != PJMEDIA_RIFF_TAG ||
+	wave_hdr.riff_hdr.wave != PJMEDIA_WAVE_TAG ||
+	wave_hdr.fmt_hdr.fmt != PJMEDIA_FMT_TAG)
+    {
+	pj_file_close(fport->fd);
+	TRACE_((THIS_FILE, 
+		"actual value|expected riff=%x|%x, wave=%x|%x fmt=%x|%x",
+		wave_hdr.riff_hdr.riff, PJMEDIA_RIFF_TAG,
+		wave_hdr.riff_hdr.wave, PJMEDIA_WAVE_TAG,
+		wave_hdr.fmt_hdr.fmt, PJMEDIA_FMT_TAG));
+	return PJMEDIA_ENOTVALIDWAVE;
+    }
+
+    /* Validate format and its attributes (i.e: bits per sample, block align) */
+    switch (wave_hdr.fmt_hdr.fmt_tag) {
+    case PJMEDIA_WAVE_FMT_TAG_PCM:
+	if (wave_hdr.fmt_hdr.bits_per_sample != 16 || 
+	    wave_hdr.fmt_hdr.block_align != 2 * wave_hdr.fmt_hdr.nchan)
+	    status = PJMEDIA_EWAVEUNSUPP;
+	break;
+
+    case PJMEDIA_WAVE_FMT_TAG_ALAW:
+    case PJMEDIA_WAVE_FMT_TAG_ULAW:
+	if (wave_hdr.fmt_hdr.bits_per_sample != 8 ||
+	    wave_hdr.fmt_hdr.block_align != wave_hdr.fmt_hdr.nchan)
+	    status = PJMEDIA_ENOTVALIDWAVE;
+	break;
+
+    default:
+	status = PJMEDIA_EWAVEUNSUPP;
+	break;
+    }
+
+    if (status != PJ_SUCCESS) {
+	pj_file_close(fport->fd);
+	return status;
+    }
+
+    fport->fmt_tag = (pjmedia_wave_fmt_tag)wave_hdr.fmt_hdr.fmt_tag;
+    fport->bytes_per_sample = (pj_uint16_t) 
+			      (wave_hdr.fmt_hdr.bits_per_sample / 8);
+
+    /* If length of fmt_header is greater than 16, skip the remaining
+     * fmt header data.
+     */
+    if (wave_hdr.fmt_hdr.len > 16) {
+	size_to_read = wave_hdr.fmt_hdr.len - 16;
+	status = pj_file_setpos(fport->fd, size_to_read, PJ_SEEK_CUR);
+	if (status != PJ_SUCCESS) {
+	    pj_file_close(fport->fd);
+	    return status;
+	}
+    }
+
+    /* Repeat reading the WAVE file until we have 'data' chunk */
+    for (;;) {
+	pjmedia_wave_subchunk subchunk;
+	size_read = 8;
+	status = pj_file_read(fport->fd, &subchunk, &size_read);
+	if (status != PJ_SUCCESS || size_read != 8) {
+	    pj_file_close(fport->fd);
+	    return PJMEDIA_EWAVETOOSHORT;
+	}
+
+	/* Normalize endianness */
+	PJMEDIA_WAVE_NORMALIZE_SUBCHUNK(&subchunk);
+
+	/* Break if this is "data" chunk */
+	if (subchunk.id == PJMEDIA_DATA_TAG) {
+	    wave_hdr.data_hdr.data = PJMEDIA_DATA_TAG;
+	    wave_hdr.data_hdr.len = subchunk.len;
+	    break;
+	}
+
+	/* Otherwise skip the chunk contents */
+	size_to_read = subchunk.len;
+	status = pj_file_setpos(fport->fd, size_to_read, PJ_SEEK_CUR);
+	if (status != PJ_SUCCESS) {
+	    pj_file_close(fport->fd);
+	    return status;
+	}
+    }
+
+    /* Current file position now points to start of data */
+    status = pj_file_getpos(fport->fd, &pos);
+    fport->start_data = (unsigned)pos;
+    fport->data_len = wave_hdr.data_hdr.len;
+    fport->data_left = wave_hdr.data_hdr.len;
+
+    /* Validate length. */
+    if (wave_hdr.data_hdr.len > fport->fsize - fport->start_data) {
+	pj_file_close(fport->fd);
+	return PJMEDIA_EWAVEUNSUPP;
+    }
+    if (wave_hdr.data_hdr.len < ptime * wave_hdr.fmt_hdr.sample_rate *
+				wave_hdr.fmt_hdr.nchan / 1000)
+    {
+	pj_file_close(fport->fd);
+	return PJMEDIA_EWAVETOOSHORT;
+    }
+
+    /* It seems like we have a valid WAVE file. */
+
+    /* Initialize */
+    fport->options = options;
+
+    /* Update port info. */
+    ad = pjmedia_format_get_audio_format_detail(&fport->base.info.fmt, 1);
+    pj_strdup2(pool, &name, filename);
+    samples_per_frame = ptime * wave_hdr.fmt_hdr.sample_rate *
+		        wave_hdr.fmt_hdr.nchan / 1000;
+    pjmedia_port_info_init(&fport->base.info, &name, SIGNATURE,
+			   wave_hdr.fmt_hdr.sample_rate,
+			   wave_hdr.fmt_hdr.nchan,
+			   BITS_PER_SAMPLE,
+			   samples_per_frame);
+
+    /* If file is shorter than buffer size, adjust buffer size to file
+     * size. Otherwise EOF callback will be called multiple times when
+     * fill_buffer() is called.
+     */
+    if (wave_hdr.data_hdr.len < (unsigned)buff_size)
+	buff_size = wave_hdr.data_hdr.len;
+
+    /* Create file buffer.
+     */
+    fport->bufsize = (pj_uint32_t)buff_size;
+
+
+    /* samples_per_frame must be smaller than bufsize (because get_frame()
+     * doesn't handle this case).
+     */
+    if (samples_per_frame * fport->bytes_per_sample >= fport->bufsize) {
+	pj_file_close(fport->fd);
+	return PJ_EINVAL;
+    }
+
+    /* Create buffer. */
+    fport->buf = (char*) pj_pool_alloc(pool, fport->bufsize);
+    if (!fport->buf) {
+	pj_file_close(fport->fd);
+	return PJ_ENOMEM;
+    }
+ 
+    fport->readpos = fport->buf;
+
+    /* Set initial position of the file. */
+    fport->fpos = fport->start_data;
+
+    /* Fill up the buffer. */
+    status = fill_buffer(fport);
+    if (status != PJ_SUCCESS) {
+	pj_file_close(fport->fd);
+	return status;
+    }
+
+    /* Done. */
+
+    *p_port = &fport->base;
+
+
+    PJ_LOG(4,(THIS_FILE, 
+	      "File player '%.*s' created: samp.rate=%d, ch=%d, bufsize=%uKB, "
+	      "filesize=%luKB",
+	      (int)fport->base.info.name.slen,
+	      fport->base.info.name.ptr,
+	      ad->clock_rate,
+	      ad->channel_count,
+	      fport->bufsize / 1000,
+	      (unsigned long)(fport->fsize / 1000)));
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Get the data length, in bytes.
+ */
+PJ_DEF(pj_ssize_t) pjmedia_wav_player_get_len(pjmedia_port *port)
+{
+    struct file_reader_port *fport;
+    pj_ssize_t size;
+
+    /* Sanity check */
+    PJ_ASSERT_RETURN(port, -PJ_EINVAL);
+
+    /* Check that this is really a player port */
+    PJ_ASSERT_RETURN(port->info.signature == SIGNATURE, -PJ_EINVALIDOP);
+
+    fport = (struct file_reader_port*) port;
+
+    size = (pj_ssize_t) fport->fsize;
+    return size - fport->start_data;
+}
+
+
+/*
+ * Set position.
+ */
+PJ_DEF(pj_status_t) pjmedia_wav_player_port_set_pos(pjmedia_port *port,
+						    pj_uint32_t bytes )
+{
+    struct file_reader_port *fport;
+    pj_status_t status;
+
+    /* Sanity check */
+    PJ_ASSERT_RETURN(port, PJ_EINVAL);
+
+    /* Check that this is really a player port */
+    PJ_ASSERT_RETURN(port->info.signature == SIGNATURE, PJ_EINVALIDOP);
+
+
+    fport = (struct file_reader_port*) port;
+
+    /* Check that this offset does not pass the audio-data (in case of
+     * extra chunk after audio data chunk
+     */
+    PJ_ASSERT_RETURN(bytes < fport->data_len, PJ_EINVAL);
+
+    fport->fpos = fport->start_data + bytes;
+    fport->data_left = fport->data_len - bytes;
+    pj_file_setpos( fport->fd, fport->fpos, PJ_SEEK_SET);
+
+    fport->eof = PJ_FALSE;
+    status = fill_buffer(fport);
+    if (status != PJ_SUCCESS)
+	return status;
+
+    fport->readpos = fport->buf;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Get the file play position of WAV player.
+ */
+PJ_DEF(pj_ssize_t) pjmedia_wav_player_port_get_pos( pjmedia_port *port )
+{
+    struct file_reader_port *fport;
+    pj_size_t payload_pos;
+
+    /* Sanity check */
+    PJ_ASSERT_RETURN(port, -PJ_EINVAL);
+
+    /* Check that this is really a player port */
+    PJ_ASSERT_RETURN(port->info.signature == SIGNATURE, -PJ_EINVALIDOP);
+
+    fport = (struct file_reader_port*) port;
+
+    payload_pos = (pj_size_t)(fport->fpos - fport->start_data);
+    if (payload_pos >= fport->bufsize)
+	return payload_pos - fport->bufsize + (fport->readpos - fport->buf);
+    else
+	return (fport->readpos - fport->buf) % payload_pos;
+}
+
+
+
+/*
+ * Register a callback to be called when the file reading has reached the
+ * end of file.
+ */
+PJ_DEF(pj_status_t) pjmedia_wav_player_set_eof_cb( pjmedia_port *port,
+			       void *user_data,
+			       pj_status_t (*cb)(pjmedia_port *port,
+						 void *usr_data))
+{
+    struct file_reader_port *fport;
+
+    /* Sanity check */
+    PJ_ASSERT_RETURN(port, -PJ_EINVAL);
+
+    /* Check that this is really a player port */
+    PJ_ASSERT_RETURN(port->info.signature == SIGNATURE, -PJ_EINVALIDOP);
+
+    fport = (struct file_reader_port*) port;
+
+    fport->base.port_data.pdata = user_data;
+    fport->cb = cb;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Get frame from file.
+ */
+static pj_status_t file_get_frame(pjmedia_port *this_port, 
+				  pjmedia_frame *frame)
+{
+    struct file_reader_port *fport = (struct file_reader_port*)this_port;
+    pj_size_t frame_size;
+    pj_status_t status;
+
+    pj_assert(fport->base.info.signature == SIGNATURE);
+    pj_assert(frame->size <= fport->bufsize);
+
+    /* EOF is set and readpos already passed the eofpos */
+    if (fport->eof && fport->readpos >= fport->eofpos) {
+	pj_status_t status = PJ_SUCCESS;
+
+	PJ_LOG(5,(THIS_FILE, "File port %.*s EOF",
+		  (int)fport->base.info.name.slen,
+		  fport->base.info.name.ptr));
+
+	/* Call callback, if any */
+	if (fport->cb)
+	    status = (*fport->cb)(this_port, fport->base.port_data.pdata);
+
+	/* If callback returns non PJ_SUCCESS or 'no loop' is specified,
+	 * return immediately (and don't try to access player port since
+	 * it might have been destroyed by the callback).
+	 */
+	if ((status != PJ_SUCCESS) || (fport->options & PJMEDIA_FILE_NO_LOOP)) {
+	    frame->type = PJMEDIA_FRAME_TYPE_NONE;
+	    frame->size = 0;
+	    return PJ_EEOF;
+	}
+    	
+	PJ_LOG(5,(THIS_FILE, "File port %.*s rewinding..",
+		  (int)fport->base.info.name.slen,
+		  fport->base.info.name.ptr));
+	
+	fport->eof = PJ_FALSE;
+    }
+
+    //pj_assert(frame->size == fport->base.info.bytes_per_frame);
+    if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_PCM) {
+	frame_size = frame->size;
+	//frame->size = frame_size;
+    } else {
+	/* Must be ULAW or ALAW */
+	pj_assert(fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ULAW || 
+		  fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ALAW);
+
+	frame_size = frame->size >> 1;
+	frame->size = frame_size << 1;
+    }
+
+    /* Copy frame from buffer. */
+    frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
+    frame->timestamp.u64 = 0;
+
+    if ((fport->readpos + frame_size) <= (fport->buf + fport->bufsize))
+    {
+	/* Read contiguous buffer. */
+	pj_memcpy(frame->buf, fport->readpos, frame_size);
+
+	/* Fill up the buffer if all has been read. */
+	fport->readpos += frame_size;
+	if (fport->readpos == fport->buf + fport->bufsize) {
+	    fport->readpos = fport->buf;
+
+	    status = fill_buffer(fport);
+	    if (status != PJ_SUCCESS) {
+		frame->type = PJMEDIA_FRAME_TYPE_NONE;
+		frame->size = 0;
+		fport->readpos = fport->buf + fport->bufsize;
+		return status;
+	    }
+	}
+    } else {
+	unsigned endread;
+
+	/* Split read.
+	 * First stage: read until end of buffer. 
+	 */
+	endread = (unsigned)((fport->buf+fport->bufsize) - fport->readpos);
+	pj_memcpy(frame->buf, fport->readpos, endread);
+
+	/* End Of Buffer and EOF and NO LOOP */
+	if (fport->eof && (fport->options & PJMEDIA_FILE_NO_LOOP)) {
+	    fport->readpos += endread;
+
+            if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_PCM) {
+                pj_bzero((char*)frame->buf + endread, frame_size - endread);
+            } else if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ULAW) {
+                int val = pjmedia_linear2ulaw(0);
+                pj_memset((char*)frame->buf + endread, val,
+                          frame_size - endread);
+            } else if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ALAW) {
+                int val = pjmedia_linear2alaw(0);
+                pj_memset((char*)frame->buf + endread, val,
+                          frame_size - endread);
+            }
+
+	    return PJ_SUCCESS;
+	}
+
+	/* Second stage: fill up buffer, and read from the start of buffer. */
+	status = fill_buffer(fport);
+	if (status != PJ_SUCCESS) {
+	    frame->type = PJMEDIA_FRAME_TYPE_NONE;
+	    frame->size = 0;
+	    fport->readpos = fport->buf + fport->bufsize;
+	    return status;
+	}
+
+	pj_memcpy(((char*)frame->buf)+endread, fport->buf, frame_size-endread);
+	fport->readpos = fport->buf + (frame_size - endread);
+    }
+
+    if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ULAW ||
+	fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ALAW)
+    {
+	unsigned i;
+	pj_uint16_t *dst;
+	pj_uint8_t *src;
+
+	dst = (pj_uint16_t*)frame->buf + frame_size - 1;
+	src = (pj_uint8_t*)frame->buf + frame_size - 1;
+
+	if (fport->fmt_tag == PJMEDIA_WAVE_FMT_TAG_ULAW) {
+	    for (i = 0; i < frame_size; ++i) {
+		*dst-- = (pj_uint16_t) pjmedia_ulaw2linear(*src--);
+	    }
+	} else {
+	    for (i = 0; i < frame_size; ++i) {
+		*dst-- = (pj_uint16_t) pjmedia_alaw2linear(*src--);
+	    }
+	}
+    }
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Destroy port.
+ */
+static pj_status_t file_on_destroy(pjmedia_port *this_port)
+{
+    struct file_reader_port *fport = (struct file_reader_port*) this_port;
+
+    pj_assert(this_port->info.signature == SIGNATURE);
+
+    pj_file_close(fport->fd);
+    return PJ_SUCCESS;
+}
+