/*
* Convert 32-bit value from host byte order to network byte order.
*/
PJ_DEF(pj_uint32_t) pj_htonl(pj_uint32_t hostlong)
{
#if PJ_IS_LITTLE_ENDIAN
return pj_swap32(hostlong);
#else
return netlong;
#endif
}
/*
* Convert 32-bit value from network byte order to host byte order.
*/
PJ_DEF(pj_uint32_t) pj_ntohl(pj_uint32_t netlong)
{
#if PJ_IS_LITTLE_ENDIAN
return pj_swap32(netlong);
#else
return netlong;
#endif
}
static void data_to_host(void *data, pj_uint8_t bits, unsigned count)
{
unsigned i;
pj_int32_t *data32 = (pj_int32_t *)data;
pj_int16_t *data16 = (pj_int16_t *)data;
count /= (bits == 32? 4 : 2);
for (i=0; i<count; ++i) {
if (bits == 32)
data32[i] = pj_swap32(data32[i]);
else
data16[i] = pj_swap16(data16[i]);
}
}
/*
* Change the endianness of WAVE header fields.
*/
static void wave_hdr_swap_bytes( pjmedia_wave_hdr *hdr )
{
#if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0
hdr->riff_hdr.riff = pj_swap32(hdr->riff_hdr.riff);
hdr->riff_hdr.file_len = pj_swap32(hdr->riff_hdr.file_len);
hdr->riff_hdr.wave = pj_swap32(hdr->riff_hdr.wave);
hdr->fmt_hdr.fmt = pj_swap32(hdr->fmt_hdr.fmt);
hdr->fmt_hdr.len = pj_swap32(hdr->fmt_hdr.len);
hdr->fmt_hdr.fmt_tag = pj_swap16(hdr->fmt_hdr.fmt_tag);
hdr->fmt_hdr.nchan = pj_swap16(hdr->fmt_hdr.nchan);
hdr->fmt_hdr.sample_rate = pj_swap32(hdr->fmt_hdr.sample_rate);
hdr->fmt_hdr.bytes_per_sec = pj_swap32(hdr->fmt_hdr.bytes_per_sec);
hdr->fmt_hdr.block_align = pj_swap16(hdr->fmt_hdr.block_align);
hdr->fmt_hdr.bits_per_sample = pj_swap16(hdr->fmt_hdr.bits_per_sample);
hdr->data_hdr.data = pj_swap32(hdr->data_hdr.data);
hdr->data_hdr.len = pj_swap32(hdr->data_hdr.len);
#else
PJ_UNUSED_ARG(hdr);
#endif
}
/*
* Close the port, modify file header with updated file length.
*/
static pj_status_t file_on_destroy(pjmedia_port *this_port)
{
enum { FILE_LEN_POS = 4, DATA_LEN_POS = 40 };
struct file_port *fport = (struct file_port *)this_port;
pj_off_t file_size;
pj_ssize_t bytes;
pj_uint32_t wave_file_len;
pj_uint32_t wave_data_len;
pj_status_t status;
pj_uint32_t data_len_pos = DATA_LEN_POS;
/* Flush remaining buffers. */
if (fport->writepos != fport->buf)
flush_buffer(fport);
/* Get file size. */
status = pj_file_getpos(fport->fd, &file_size);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Calculate wave fields */
wave_file_len = (pj_uint32_t)(file_size - 8);
wave_data_len = (pj_uint32_t)(file_size - sizeof(pjmedia_wave_hdr));
#if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0
wave_file_len = pj_swap32(wave_file_len);
wave_data_len = pj_swap32(wave_data_len);
#endif
/* Seek to the file_len field. */
status = pj_file_setpos(fport->fd, FILE_LEN_POS, PJ_SEEK_SET);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Write file_len */
bytes = sizeof(wave_file_len);
status = pj_file_write(fport->fd, &wave_file_len, &bytes);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Write samples_len in FACT chunk */
if (fport->fmt_tag != PJMEDIA_WAVE_FMT_TAG_PCM) {
enum { SAMPLES_LEN_POS = 44};
pj_uint32_t wav_samples_len;
/* Adjust wave_data_len & data_len_pos since there is FACT chunk */
wave_data_len -= 12;
data_len_pos += 12;
wav_samples_len = wave_data_len;
/* Seek to samples_len field. */
status = pj_file_setpos(fport->fd, SAMPLES_LEN_POS, PJ_SEEK_SET);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Write samples_len */
bytes = sizeof(wav_samples_len);
status = pj_file_write(fport->fd, &wav_samples_len, &bytes);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
}
/* Seek to data_len field. */
status = pj_file_setpos(fport->fd, data_len_pos, PJ_SEEK_SET);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Write file_len */
bytes = sizeof(wave_data_len);
status = pj_file_write(fport->fd, &wave_data_len, &bytes);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Close file */
status = pj_file_close(fport->fd);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Done. */
return PJ_SUCCESS;
}
