void cParser::PutData(unsigned char* data, int length, bool pusi)
{
// get PTS / DTS on PES start
if (pusi)
{
int64_t pts = m_curPTS;
int64_t dts = m_curDTS;
int offset = ParsePESHeader(data, length);
data += offset;
length -= offset;
if(pts > m_curPTS) m_curPTS = pts;
if(dts > m_curDTS) m_curDTS = dts;
m_startup = false;
}
// put data
if(!m_startup && length > 0 && data != NULL)
{
int put = Put(data, length);
// reset buffer on overflow
if(put < length)
{
ERRORLOG("Parser buffer overflow - resetting");
Clear();
}
}
}
void cParserMPEG2Audio::Parse(unsigned char *data, int size, bool pusi)
{
if (pusi)
{
/* Payload unit start */
m_PESStart = true;
m_firstPUSIseen = true;
}
/* Wait for first pusi */
if (!m_firstPUSIseen)
return;
if (m_PESStart)
{
int hlen = ParsePESHeader(data, size);
if (hlen <= 0)
return;
data += hlen;
size -= hlen;
m_PESStart = false;
assert(size >= 0);
if(size == 0)
return;
}
while (size > 0)
{
uint8_t *outbuf;
int outlen;
int rlen = FindHeaders(&outbuf, &outlen, data, size, m_curPTS, m_curDTS);
if (rlen < 0)
break;
m_curPTS = DVD_NOPTS_VALUE;
m_curDTS = DVD_NOPTS_VALUE;
if (outlen)
{
sStreamPacket pkt;
pkt.data = outbuf;
pkt.size = outlen;
pkt.duration = 90000 * 1152 / m_SampleRate;
pkt.dts = m_DTS;
if (pkt.dts == DVD_NOPTS_VALUE)
pkt.dts = m_NextDTS;
pkt.pts = pkt.dts;
m_NextDTS = pkt.dts + pkt.duration;
m_demuxer->SendPacket(&pkt);
}
data += rlen;
size -= rlen;
}
}
void cParserTeletext::Parse(unsigned char *data, int size, bool pusi)
{
if (pusi)
{
/* Payload unit start */
m_PESStart = true;
m_firstPUSIseen = true;
}
/* Wait for first pusi */
if (!m_firstPUSIseen)
return;
if (m_PESStart)
{
if (!PesIsPS1Packet(data))
{
ERRORLOG("Teletext PES packet contains no valid private stream 1, ignored this packet");
m_firstPUSIseen = false;
return;
}
m_lastDTS = m_curDTS;
m_lastPTS = m_curPTS;
int hlen = ParsePESHeader(data, size);
m_PESStart = false;
data += hlen;
size -= hlen;
if (data[0] < 0x10 || data[0] > 0x1F)
{
ERRORLOG("Teletext PES packet contains no valid identifier, ignored this packet");
m_firstPUSIseen = false;
return;
}
if (m_teletextBuffer && m_teletextBufferPtr > 0)
{
sStreamPacket pkt;
pkt.id = m_streamID;
pkt.data = m_teletextBuffer;
pkt.size = m_teletextBufferPtr;
pkt.duration = m_curDTS-m_lastDTS;
pkt.dts = m_lastDTS;
pkt.pts = m_lastPTS;
SendPacket(&pkt);
m_teletextBufferPtr = 0;
}
}
if (m_teletextBuffer == NULL)
{
m_teletextBufferSize = 4000;
m_teletextBuffer = (uint8_t*)malloc(m_teletextBufferSize);
}
if (m_teletextBufferPtr + size + 4 >= m_teletextBufferSize)
{
m_teletextBufferSize += size * 4;
m_teletextBuffer = (uint8_t*)realloc(m_teletextBuffer, m_teletextBufferSize);
}
memcpy(m_teletextBuffer+m_teletextBufferPtr, data, size);
m_teletextBufferPtr += size;
}
bool cParserH264::Parse_H264(size_t len, uint32_t next_startcode, int sc_offset)
{
uint8_t nal_data[len];
int pkttype;
uint8_t *buf = m_pictureBuffer + sc_offset;
uint32_t startcode = m_StartCode;
if (startcode == 0x10c)
{
/* RBSP padding, we don't want this */
int length = len - sc_offset;
memcpy(buf, buf + length, 4); /* Move down new start code */
m_pictureBufferPtr -= length; /* Drop buffer */
}
if (startcode >= 0x000001e0 && startcode <= 0x000001ef)
{
/* System start codes for video */
if (len >= 9)
ParsePESHeader(buf, len);
if (m_PrevDTS != DVD_NOPTS_VALUE)
{
int64_t duration = (m_curDTS - m_PrevDTS) & 0x1ffffffffLL;
if (duration < 90000)
m_FrameDuration = duration;
}
m_PrevDTS = m_curDTS;
return true;
}
switch(startcode & 0x1f)
{
case NAL_SPS:
{
int nal_len = nalUnescape(nal_data, buf + 4, len - 4);
if (!Parse_SPS(nal_data, nal_len))
return true;
m_demuxer->SetVideoInformation(0,0, m_Height, m_Width, m_PixelAspect.num/m_PixelAspect.den);
break;
}
case NAL_PPS:
{
int nal_len = nalUnescape(nal_data, buf + 4, len - 4);
if (!Parse_PPS(nal_data, nal_len))
return true;
break;
}
case 5: /* IDR+SLICE */
case NAL_SLH:
{
if (m_FoundFrame || m_FrameDuration == 0 || m_curDTS == DVD_NOPTS_VALUE)
break;
int nal_len = nalUnescape(nal_data, buf + 4, len - 4 > 64 ? 64 : len - 3);
if (!Parse_SLH(nal_data, nal_len, &pkttype))
return true;
m_StreamPacket.id = m_streamID;
m_StreamPacket.pts = m_curPTS;
m_StreamPacket.dts = m_curDTS;
m_StreamPacket.frametype = pkttype;
m_StreamPacket.duration = m_FrameDuration;
m_FoundFrame = true;
break;
}
default:
break;
}
if (next_startcode >= 0x000001e0 && next_startcode <= 0x000001ef)
{
/* Complete frame */
if (!m_FoundFrame)
return true;
/* Discard Packets until we have the picture size (XBMC can't enable VDPAU without it) */
if (!m_Width)
return true;
else
m_Streamer->SetReady();
m_FoundFrame = false;
m_StreamPacket.data = m_pictureBuffer;
m_StreamPacket.size = m_pictureBufferPtr;
SendPacket(&m_StreamPacket);
m_firstPUSIseen = true;
return true;
}
return false;
}
