wxSoundStream& wxSoundStreamG72X::Read(void *buffer, wxUint32 len)
{
wxUint16 *old_linear;
register wxUint16 *linear_buffer;
register wxUint32 real_len;
register wxUint32 countdown = len;
real_len = (len * 8 / m_n_bits);
old_linear = linear_buffer = new wxUint16[real_len];
m_router->Read(linear_buffer, real_len);
real_len = (wxUint32)(m_router->GetLastAccess() * ((float)m_n_bits / 8));
if (!real_len)
return *m_router;
m_io_buffer = (wxUint8 *)buffer;
m_current_b_pos = 0;
while (countdown != 0) {
PutBits(m_coder(*linear_buffer++, AUDIO_ENCODING_LINEAR, m_state));
countdown--;
}
m_lastcount = real_len;
m_snderror = m_router->GetError();
delete[] old_linear;
return *this;
}
static int writeData(void* _call)
{
WriterAVCallData_t* call = (WriterAVCallData_t*) _call;
unsigned char PesHeader[PES_MAX_HEADER_SIZE];
unsigned char FakeHeaders[64]; // 64bytes should be enough to make the fake headers
unsigned int FakeHeaderLength;
unsigned int ExtraLength = 0;
unsigned char Version = 5;
unsigned int FakeStartCode = (Version << 8) | PES_VERSION_FAKE_START_CODE;
unsigned int HeaderLength = 0;
unsigned int usecPerFrame = 41708; /* Hellmaster1024: default value */
BitPacker_t ld = {FakeHeaders, 0, 32};
divx_printf(10, "\n");
if (call == NULL)
{
divx_err("call data is NULL...\n");
return 0;
}
divx_printf(10, "AudioPts %lld\n", call->Pts);
if ((call->data == NULL) || (call->len <= 0))
{
divx_err("parsing NULL Data. ignoring...\n");
return 0;
}
if (call->fd < 0)
{
divx_err("file pointer < 0. ignoring ...\n");
return 0;
}
usecPerFrame = 1000000000 / call->FrameRate;
divx_printf(10, "Microsecends per frame = %d\n", usecPerFrame);
memset(FakeHeaders, 0, sizeof(FakeHeaders));
/* Create info record for frame parser */
/* divx4 & 5
VOS
PutBits(&ld, 0x0, 8);
PutBits(&ld, 0x0, 8);
*/
PutBits(&ld, 0x1b0, 32); // startcode
PutBits(&ld, 0, 8); // profile = reserved
PutBits(&ld, 0x1b2, 32); // startcode (user data)
PutBits(&ld, 0x53545443, 32); // STTC - an embedded ST timecode from an avi file
PutBits(&ld, usecPerFrame , 32);
// microseconds per frame
FlushBits(&ld);
FakeHeaderLength = (ld.Ptr - (FakeHeaders));
if (initialHeader) ExtraLength = call->private_size;
HeaderLength = InsertPesHeader (PesHeader, call->len, MPEG_VIDEO_PES_START_CODE, call->Pts, FakeStartCode);
int iovcnt = 0;
struct iovec iov[4];
iov[iovcnt].iov_base = PesHeader;
iov[iovcnt].iov_len = HeaderLength;
iovcnt++;
iov[iovcnt].iov_base = FakeHeaders;
iov[iovcnt].iov_len = FakeHeaderLength;
iovcnt++;
if (initialHeader) {
initialHeader = 0;
iov[iovcnt].iov_base = call->private_data;
iov[iovcnt].iov_len = call->private_size;
iovcnt++;
}
iov[iovcnt].iov_base = call->data;
iov[iovcnt].iov_len = call->len;
iovcnt++;
int len = writev(call->fd, iov, iovcnt);
divx_printf(10, "xvid_Write < len=%d\n", len);
return len;
}
