Revision 59be6a47 src/demuxer.cpp
| src/demuxer.cpp | ||
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#include <linux/dvb/dmx.h> |
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#define IPACKS 2048 |
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#define TS_SIZE 188 |
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static void set_ts_filt(int fd,uint16_t pid, dmx_pes_type_t pestype); |
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Demuxer::Demuxer(Tuner *tuner, int pid, bool convertToPS, Demuxer::PESType pestype)
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Demuxer::Demuxer(Tuner *tuner, int pid, Demuxer::PESType pestype) |
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: tuner(tuner), pid(pid), demuxFD(-1) |
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{
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init_ipack(&packer, IPACKS, output, 1); |
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switch (pestype) {
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case Video: this->pesType = int(DMX_PES_VIDEO); break; |
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case Audio: this->pesType = int(DMX_PES_AUDIO); break; |
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case Teletext: this->pesType = int(DMX_PES_TELETEXT); break; |
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} |
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packer.data = this; |
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} |
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Demuxer::~Demuxer() |
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{
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unsubscribeAll(); |
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free_ipack(&packer); |
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} |
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// Static function for use by the ipack code |
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void Demuxer::output(uint8_t *data, int size, void *priv) |
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{
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Demuxer *d = (Demuxer *) priv; |
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d->sendData(data, (unsigned) size); |
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} |
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bool Demuxer::openDemux() |
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} |
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void Demuxer::receiveData(unsigned char *data, unsigned size) |
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// From transform.c (Marcus Metzler) |
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#define PID_MASK_HI 0x1F |
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static inline uint16_t get_pid(uint8_t *pid) |
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{
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if (convertToPS) {
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// adapted from my_ts_to_ps( uint8_t* buf, uint16_t pida, uint16_t pidv) |
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// in dvbstream.c (Dave Chapman) |
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uint16_t pid; |
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ipack *p = &this->packer; |
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uint8_t off = 0; |
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uint8_t *buf = (uint8_t *) data; |
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pid = get_pid(buf+1); |
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if (!(buf[3]&0x10)) // no payload? |
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return; |
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// Is this our packet? |
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if (pid != this->pid) |
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return; |
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if ( buf[1]&0x40) {
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if (p->plength == MMAX_PLENGTH-6){
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p->plength = p->found-6; |
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p->found = 0; |
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send_ipack(p); |
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reset_ipack(p); |
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} |
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} |
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uint16_t pp = 0; |
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if ( buf[3] & 0x20) { // adaptation field?
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off = buf[4] + 1;
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} |
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instant_repack(buf+4+off, TS_SIZE-4-off, p);
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} |
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else {
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if (get_pid(data + 1) == pid)
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sendData(data, (unsigned) size);
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}
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pp = (pid[0] & PID_MASK_HI)<<8;
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pp |= pid[1];
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return pp; |
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}
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void Demuxer::receiveData(unsigned char *data, unsigned size)
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{
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if (get_pid(data + 1) == pid)
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sendData(data, (unsigned) size);
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} |
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static void set_ts_filt(int fd,uint16_t pid, dmx_pes_type_t pestype) |
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