Em Mon, 30 Dec 2013 13:48:37 +0100 André Roth <neol...@gmail.com> escreveu:
> Implement parsers for mpeg TS, PES and ES > > Signed-off-by: André Roth <neol...@gmail.com> > --- > lib/include/descriptors/mpeg_es.h | 109 ++++++++++++++++++++++++++++++ > lib/include/descriptors/mpeg_pes.h | 111 ++++++++++++++++++++++++++++++ > lib/include/descriptors/mpeg_ts.h | 78 +++++++++++++++++++++ > lib/libdvbv5/Makefile.am | 5 +- > lib/libdvbv5/descriptors/mpeg_es.c | 76 +++++++++++++++++++++ > lib/libdvbv5/descriptors/mpeg_pes.c | 131 > ++++++++++++++++++++++++++++++++++++ > lib/libdvbv5/descriptors/mpeg_ts.c | 77 +++++++++++++++++++++ > 7 files changed, 586 insertions(+), 1 deletion(-) > create mode 100644 lib/include/descriptors/mpeg_es.h > create mode 100644 lib/include/descriptors/mpeg_pes.h > create mode 100644 lib/include/descriptors/mpeg_ts.h > create mode 100644 lib/libdvbv5/descriptors/mpeg_es.c > create mode 100644 lib/libdvbv5/descriptors/mpeg_pes.c > create mode 100644 lib/libdvbv5/descriptors/mpeg_ts.c > > diff --git a/lib/include/descriptors/mpeg_es.h > b/lib/include/descriptors/mpeg_es.h > new file mode 100644 > index 0000000..4c6a862 > --- /dev/null > +++ b/lib/include/descriptors/mpeg_es.h > @@ -0,0 +1,109 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#ifndef _MPEG_ES_H > +#define _MPEG_ES_H > + > +#include <stdint.h> > +#include <unistd.h> /* ssize_t */ > + > +#define DVB_MPEG_ES_PIC_START 0x00 > +#define DVB_MPEG_ES_USER_DATA 0xb2 > +#define DVB_MPEG_ES_SEQ_START 0xb3 > +#define DVB_MPEG_ES_SEQ_EXT 0xb5 > +#define DVB_MPEG_ES_GOP 0xb8 > +#define DVB_MPEG_ES_SLICES 0x01 ... 0xaf > + > +struct dvb_mpeg_es_seq_start { > + union { > + uint32_t bitfield; > + struct { > + uint32_t type:8; > + uint32_t sync:24; > + } __attribute__((packed)); > + } __attribute__((packed)); > + union { > + uint32_t bitfield2; > + struct { > + uint32_t framerate:4; > + uint32_t aspect:4; > + uint32_t height:12; > + uint32_t width:12; > + } __attribute__((packed)); > + }; > + union { > + uint32_t bitfield3; > + struct { > + uint32_t qm_nonintra:1; > + uint32_t qm_intra:1; > + uint32_t constrained:1; > + uint32_t vbv:10; // Size of video buffer verifier = > 16*1024*vbv buf size > + uint32_t one:1; > + uint32_t bitrate:18; > + } __attribute__((packed)); > + }; > +} __attribute__((packed)); > + > +struct dvb_mpeg_es_pic_start { > + union { > + uint32_t bitfield; > + struct { > + uint32_t type:8; > + uint32_t sync:24; > + } __attribute__((packed)); > + } __attribute__((packed)); > + union { > + uint32_t bitfield2; > + struct { > + uint32_t dummy:3; > + uint32_t vbv_delay:16; > + uint32_t coding_type:3; > + uint32_t temporal_ref:10; > + } __attribute__((packed)); > + }; > +} __attribute__((packed)); > + > +enum dvb_mpeg_es_frame_t > +{ > + DVB_MPEG_ES_FRAME_UNKNOWN, > + DVB_MPEG_ES_FRAME_I, > + DVB_MPEG_ES_FRAME_P, > + DVB_MPEG_ES_FRAME_B, > + DVB_MPEG_ES_FRAME_D > +}; > +extern const char *dvb_mpeg_es_frame_names[5]; > + > +struct dvb_v5_fe_parms; > + > +#ifdef __cplusplus > +extern "C" { > +#endif > + > +int dvb_mpeg_es_seq_start_init (const uint8_t *buf, ssize_t buflen, struct > dvb_mpeg_es_seq_start *seq_start); > +void dvb_mpeg_es_seq_start_print(struct dvb_v5_fe_parms *parms, struct > dvb_mpeg_es_seq_start *seq_start); > + > +int dvb_mpeg_es_pic_start_init (const uint8_t *buf, ssize_t buflen, struct > dvb_mpeg_es_pic_start *pic_start); > +void dvb_mpeg_es_pic_start_print(struct dvb_v5_fe_parms *parms, struct > dvb_mpeg_es_pic_start *pic_start); > + > +#ifdef __cplusplus > +} > +#endif > + > +#endif > diff --git a/lib/include/descriptors/mpeg_pes.h > b/lib/include/descriptors/mpeg_pes.h > new file mode 100644 > index 0000000..3a3f8e4 > --- /dev/null > +++ b/lib/include/descriptors/mpeg_pes.h > @@ -0,0 +1,111 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#ifndef _MPEG_PES_H > +#define _MPEG_PES_H > + > +#include <stdint.h> > +#include <unistd.h> /* ssize_t */ > + > +#define DVB_MPEG_PES 0x00001 > +#define DVB_MPEG_PES_VIDEO 0xe0 ... 0xef > + > +#define DVB_MPEG_STREAM_MAP 0xBC > +#define DVB_MPEG_STREAM_PADDING 0xBE > +#define DVB_MPEG_STREAM_PRIVATE_2 0x5F > +#define DVB_MPEG_STREAM_ECM 0x70 > +#define DVB_MPEG_STREAM_EMM 0x71 > +#define DVB_MPEG_STREAM_DIRECTORY 0xFF > +#define DVB_MPEG_STREAM_DSMCC 0x7A > +#define DVB_MPEG_STREAM_H222E 0xF8 > + > +struct ts_t { > + uint8_t one:1; > + uint8_t bits30:3; > + uint8_t tag:4; > + > + union { > + uint16_t bitfield; > + struct { > + uint16_t one1:1; > + uint16_t bits15:15; > + } __attribute__((packed)); > + } __attribute__((packed)); > + > + union { > + uint16_t bitfield2; > + struct { > + uint16_t one2:1; > + uint16_t bits00:15; > + } __attribute__((packed)); > + } __attribute__((packed)); > +} __attribute__((packed)); > + > +struct dvb_mpeg_pes_optional { > + union { > + uint16_t bitfield; > + struct { > + uint16_t PES_extension:1; > + uint16_t PES_CRC:1; > + uint16_t additional_copy_info:1; > + uint16_t DSM_trick_mode:1; > + uint16_t ES_rate:1; > + uint16_t ESCR:1; > + uint16_t PTS_DTS:2; > + uint16_t original_or_copy:1; > + uint16_t copyright:1; > + uint16_t data_alignment_indicator:1; > + uint16_t PES_priority:1; > + uint16_t PES_scrambling_control:2; > + uint16_t two:2; > + } __attribute__((packed)); > + } __attribute__((packed)); > + uint8_t length; > + uint64_t pts; > + uint64_t dts; > +} __attribute__((packed)); > + > +struct dvb_mpeg_pes { > + union { > + uint32_t bitfield; > + struct { > + uint32_t stream_id:8; > + uint32_t sync:24; > + } __attribute__((packed)); > + } __attribute__((packed)); > + uint16_t length; > + struct dvb_mpeg_pes_optional optional[]; > +} __attribute__((packed)); > + > +struct dvb_v5_fe_parms; > + > +#ifdef __cplusplus > +extern "C" { > +#endif > + > +void dvb_mpeg_pes_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, > ssize_t buflen, uint8_t *table, ssize_t *table_length); > +void dvb_mpeg_pes_free(struct dvb_mpeg_pes *ts); > +void dvb_mpeg_pes_print(struct dvb_v5_fe_parms *parms, struct dvb_mpeg_pes > *ts); > + > +#ifdef __cplusplus > +} > +#endif > + > +#endif > diff --git a/lib/include/descriptors/mpeg_ts.h > b/lib/include/descriptors/mpeg_ts.h > new file mode 100644 > index 0000000..54fee69 > --- /dev/null > +++ b/lib/include/descriptors/mpeg_ts.h > @@ -0,0 +1,78 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#ifndef _MPEG_TS_H > +#define _MPEG_TS_H > + > +#include <stdint.h> > +#include <unistd.h> /* ssize_t */ > + > +#define DVB_MPEG_TS 0x47 > + > +struct dvb_mpeg_ts_adaption { > + uint8_t length; > + struct { > + uint8_t extension:1; > + uint8_t private_data:1; > + uint8_t splicing_point:1; > + uint8_t OPCR:1; > + uint8_t PCR:1; > + uint8_t priority:1; > + uint8_t random_access:1; > + uint8_t discontinued:1; > + } __attribute__((packed)); > + > +} __attribute__((packed)); > + > +struct dvb_mpeg_ts { > + uint8_t sync_byte; // DVB_MPEG_TS > + union { > + uint16_t bitfield; > + struct { > + uint16_t pid:13; > + uint16_t priority:1; > + uint16_t payload_start:1; > + uint16_t tei:1; > + } __attribute__((packed)); > + }; > + struct { > + uint8_t continuity_counter:4; > + uint8_t adaptation_field:2; > + uint8_t scrambling:2; > + } __attribute__((packed)); > + struct dvb_mpeg_ts_adaption adaption[]; > + > +} __attribute__((packed)); > + > +struct dvb_v5_fe_parms; > + > +#ifdef __cplusplus > +extern "C" { > +#endif > + > +void dvb_mpeg_ts_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, > ssize_t buflen, uint8_t *table, ssize_t *table_length); > +void dvb_mpeg_ts_free(struct dvb_mpeg_ts *ts); > +void dvb_mpeg_ts_print(struct dvb_v5_fe_parms *parms, struct dvb_mpeg_ts > *ts); > + > +#ifdef __cplusplus > +} > +#endif > + > +#endif > diff --git a/lib/libdvbv5/Makefile.am b/lib/libdvbv5/Makefile.am > index 80e8adb..33693cc 100644 > --- a/lib/libdvbv5/Makefile.am > +++ b/lib/libdvbv5/Makefile.am > @@ -49,7 +49,10 @@ libdvbv5_la_SOURCES = \ > descriptors/sdt.c ../include/descriptors/sdt.h \ > descriptors/vct.c ../include/descriptors/vct.h \ > descriptors/eit.c ../include/descriptors/eit.h \ > - descriptors/desc_service_location.c > ../include/descriptors/desc_service_location.h > + descriptors/desc_service_location.c > ../include/descriptors/desc_service_location.h \ > + descriptors/mpeg_ts.c ../include/descriptors/mpeg_ts.h \ > + descriptors/mpeg_pes.c ../include/descriptors/mpeg_pes.h \ > + descriptors/mpeg_es.c ../include/descriptors/mpeg_es.h > > libdvbv5_la_CPPFLAGS = $(ENFORCE_LIBDVBV5_STATIC) > libdvbv5_la_LDFLAGS = $(LIBDVBV5_VERSION) $(ENFORCE_LIBDVBV5_STATIC) -lm > diff --git a/lib/libdvbv5/descriptors/mpeg_es.c > b/lib/libdvbv5/descriptors/mpeg_es.c > new file mode 100644 > index 0000000..9fcb5ca > --- /dev/null > +++ b/lib/libdvbv5/descriptors/mpeg_es.c > @@ -0,0 +1,76 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#include "descriptors/mpeg_es.h" > +#include "descriptors.h" > +#include "dvb-fe.h" > + > +int dvb_mpeg_es_seq_start_init(const uint8_t *buf, ssize_t buflen, struct > dvb_mpeg_es_seq_start *seq_start) > +{ > + if(buflen < sizeof(struct dvb_mpeg_es_seq_start)) space after "if". > + return -1; > + memcpy(seq_start, buf, sizeof(struct dvb_mpeg_es_seq_start)); > + bswap32(seq_start->bitfield); > + bswap32(seq_start->bitfield2); > + bswap32(seq_start->bitfield3); > + return 0; > +} > + > +void dvb_mpeg_es_seq_start_print(struct dvb_v5_fe_parms *parms, struct > dvb_mpeg_es_seq_start *seq_start) > +{ > + dvb_log("MPEG ES SEQ START"); > + dvb_log(" - width %d", seq_start->width); > + dvb_log(" - height %d", seq_start->height); > + dvb_log(" - aspect %d", seq_start->aspect); > + dvb_log(" - framerate %d", seq_start->framerate); > + dvb_log(" - bitrate %d", seq_start->bitrate); > + dvb_log(" - one %d", seq_start->one); > + dvb_log(" - vbv %d", seq_start->vbv); > + dvb_log(" - constrained %d", seq_start->constrained); > + dvb_log(" - qm_intra %d", seq_start->qm_intra); > + dvb_log(" - qm_nonintra %d", seq_start->qm_nonintra); > +} > + > +const char *dvb_mpeg_es_frame_names[5] = { > + "?", > + "I", > + "P", > + "B", > + "D" > +}; > + > +int dvb_mpeg_es_pic_start_init(const uint8_t *buf, ssize_t buflen, struct > dvb_mpeg_es_pic_start *pic_start) > +{ > + if(buflen < sizeof(struct dvb_mpeg_es_pic_start)) space after 'if'. > + return -1; > + memcpy(pic_start, buf, sizeof(struct dvb_mpeg_es_pic_start)); > + bswap32(pic_start->bitfield); > + bswap32(pic_start->bitfield2); > + return 0; > +} > + > +void dvb_mpeg_es_pic_start_print(struct dvb_v5_fe_parms *parms, struct > dvb_mpeg_es_pic_start *pic_start) > +{ > + dvb_log("MPEG ES PIC START"); > + dvb_log(" - temporal_ref %d", pic_start->temporal_ref); > + dvb_log(" - coding_type %d (%s-frame)", pic_start->coding_type, > dvb_mpeg_es_frame_names[pic_start->coding_type]); > + dvb_log(" - vbv_delay %d", pic_start->vbv_delay); > +} > + > diff --git a/lib/libdvbv5/descriptors/mpeg_pes.c > b/lib/libdvbv5/descriptors/mpeg_pes.c > new file mode 100644 > index 0000000..1b518a3 > --- /dev/null > +++ b/lib/libdvbv5/descriptors/mpeg_pes.c > @@ -0,0 +1,131 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#include "descriptors/mpeg_pes.h" > +#include "descriptors.h" > +#include "dvb-fe.h" > + > +void dvb_mpeg_pes_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, > ssize_t buflen, uint8_t *table, ssize_t *table_length) > +{ > + struct dvb_mpeg_pes *pes = (struct dvb_mpeg_pes *) (table + > *table_length); > + const uint8_t *p = buf; blank line. > + memcpy(table + *table_length, p, sizeof(struct dvb_mpeg_pes)); Please check size before copy. > + p += sizeof(struct dvb_mpeg_pes); > + *table_length += sizeof(struct dvb_mpeg_pes); > + > + bswap32(pes->bitfield); > + bswap16(pes->length); > + > + if (pes->sync != 0x000001 ) { > + dvb_logerr("mpeg pes invalid"); > + return; > + } > + > + if (pes->stream_id == DVB_MPEG_STREAM_PADDING) { > + dvb_logwarn("mpeg pes padding stream ignored"); > + } else if (pes->stream_id == DVB_MPEG_STREAM_MAP || > + pes->stream_id == DVB_MPEG_STREAM_PRIVATE_2 || > + pes->stream_id == DVB_MPEG_STREAM_ECM || > + pes->stream_id == DVB_MPEG_STREAM_EMM || > + pes->stream_id == DVB_MPEG_STREAM_DIRECTORY || > + pes->stream_id == DVB_MPEG_STREAM_DSMCC || > + pes->stream_id == DVB_MPEG_STREAM_H222E ) { > + dvb_logerr("mpeg pes: unsupported stream type %#04x", > pes->stream_id); > + } else { > + memcpy(pes->optional, p, sizeof(struct dvb_mpeg_pes_optional) - > + sizeof(pes->optional->pts) - > + sizeof(pes->optional->dts)); > + p += sizeof(struct dvb_mpeg_pes_optional) - > + sizeof(pes->optional->pts) - > + sizeof(pes->optional->dts); Use offsetof() and check before copy. > + bswap16(pes->optional->bitfield); > + pes->optional->pts = 0; > + pes->optional->dts = 0; > + if (pes->optional->PTS_DTS & 2) { > + struct ts_t pts; blank line. > + memcpy(&pts, p, sizeof(pts)); > + p += sizeof(pts); Please check before copy. > + bswap16(pts.bitfield); > + bswap16(pts.bitfield2); > + if (pts.one != 1 || pts.one1 != 1 || pts.one2 != 1) > + dvb_logwarn("mpeg pes: invalid pts"); > + else { > + pes->optional->pts |= (uint64_t) pts.bits00; > + pes->optional->pts |= (uint64_t) pts.bits15 << > 15; > + pes->optional->pts |= (uint64_t) pts.bits30 << > 30; > + } > + } > + if (pes->optional->PTS_DTS & 1) { > + struct ts_t dts; > + memcpy(&dts, p, sizeof(dts)); > + p += sizeof(dts); > + bswap16(dts.bitfield); > + bswap16(dts.bitfield2); > + pes->optional->dts |= (uint64_t) dts.bits00; > + pes->optional->dts |= (uint64_t) dts.bits15 << 15; > + pes->optional->dts |= (uint64_t) dts.bits30 << 30; > + } > + *table_length += sizeof(struct dvb_mpeg_pes_optional); > + } > +} > + > +void dvb_mpeg_pes_free(struct dvb_mpeg_pes *ts) > +{ > + free(ts); > +} > + > +void dvb_mpeg_pes_print(struct dvb_v5_fe_parms *parms, struct dvb_mpeg_pes > *pes) > +{ > + dvb_log("MPEG PES"); > + dvb_log(" - sync %#08x", pes->sync); > + dvb_log(" - stream_id %#04x", pes->stream_id); > + dvb_log(" - length %d", pes->length); > + if (pes->stream_id == DVB_MPEG_STREAM_PADDING) { Missing statement. It seems better to use a switch here. > + } else if (pes->stream_id == DVB_MPEG_STREAM_MAP || > + pes->stream_id == DVB_MPEG_STREAM_PRIVATE_2 || > + pes->stream_id == DVB_MPEG_STREAM_ECM || > + pes->stream_id == DVB_MPEG_STREAM_EMM || > + pes->stream_id == DVB_MPEG_STREAM_DIRECTORY || > + pes->stream_id == DVB_MPEG_STREAM_DSMCC || > + pes->stream_id == DVB_MPEG_STREAM_H222E ) { > + dvb_log(" mpeg pes unsupported stream type %#04x", > pes->stream_id); > + } else { > + dvb_log(" mpeg pes optional"); > + dvb_log(" - two %d", pes->optional->two); > + dvb_log(" - PES_scrambling_control %d", > pes->optional->PES_scrambling_control); > + dvb_log(" - PES_priority %d", > pes->optional->PES_priority); > + dvb_log(" - data_alignment_indicator %d", > pes->optional->data_alignment_indicator); > + dvb_log(" - copyright %d", > pes->optional->copyright); > + dvb_log(" - original_or_copy %d", > pes->optional->original_or_copy); > + dvb_log(" - PTS_DTS %d", > pes->optional->PTS_DTS); > + dvb_log(" - ESCR %d", > pes->optional->ESCR); > + dvb_log(" - ES_rate %d", > pes->optional->ES_rate); > + dvb_log(" - DSM_trick_mode %d", > pes->optional->DSM_trick_mode); > + dvb_log(" - additional_copy_info %d", > pes->optional->additional_copy_info); > + dvb_log(" - PES_CRC %d", > pes->optional->PES_CRC); > + dvb_log(" - PES_extension %d", > pes->optional->PES_extension); > + dvb_log(" - length %d", > pes->optional->length); > + if (pes->optional->PTS_DTS & 2) > + dvb_log(" - pts %lx (%fs)", > pes->optional->pts, (float) pes->optional->pts / 90000.0); > + if (pes->optional->PTS_DTS & 1) > + dvb_log(" - dts %lx (%fs)", > pes->optional->dts, (float) pes->optional->dts/ 90000.0); > + } > +} > + > diff --git a/lib/libdvbv5/descriptors/mpeg_ts.c > b/lib/libdvbv5/descriptors/mpeg_ts.c > new file mode 100644 > index 0000000..d7ec2c4 > --- /dev/null > +++ b/lib/libdvbv5/descriptors/mpeg_ts.c > @@ -0,0 +1,77 @@ > +/* > + * Copyright (c) 2013 - Andre Roth <neol...@gmail.com> > + * > + * 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 version 2 > + * of the License. > + * > + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 > USA > + * Or, point your browser to > http://www.gnu.org/licenses/old-licenses/gpl-2.0.html > + * > + */ > + > +#include "descriptors/mpeg_ts.h" > +#include "descriptors.h" > +#include "dvb-fe.h" > + > +void dvb_mpeg_ts_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, > ssize_t buflen, uint8_t *table, ssize_t *table_length) > +{ > + if (buf[0] != DVB_MPEG_TS) { > + dvb_logerr("mpeg ts invalid marker %#02x, sould be %#02x", > buf[0], DVB_MPEG_TS); > + *table_length = 0; > + return; > + } > + struct dvb_mpeg_ts *ts = (struct dvb_mpeg_ts *) table; > + const uint8_t *p = buf; Please reorder: data declarations should come before the if. > + memcpy(table, p, sizeof(struct dvb_mpeg_ts)); Please check before copy. > + p += sizeof(struct dvb_mpeg_ts); > + *table_length = sizeof(struct dvb_mpeg_ts); > + > + bswap16(ts->bitfield); > + > + if (ts->adaptation_field & 0x2) { > + memcpy(table + *table_length, p, sizeof(struct > dvb_mpeg_ts_adaption)); Please check before copy. > + p += sizeof(struct dvb_mpeg_ts); > + *table_length += ts->adaption->length + 1; > + } > + /*hexdump(parms, "TS: ", buf, buflen);*/ > +} > + > +void dvb_mpeg_ts_free(struct dvb_mpeg_ts *ts) > +{ > + free(ts); > +} > + > +void dvb_mpeg_ts_print(struct dvb_v5_fe_parms *parms, struct dvb_mpeg_ts *ts) > +{ > + dvb_log("MPEG TS"); > + dvb_log(" - sync byte %#02x", ts->sync_byte); > + dvb_log(" - tei %d", ts->tei); > + dvb_log(" - payload_start %d", ts->payload_start); > + dvb_log(" - priority %d", ts->priority); > + dvb_log(" - pid %d", ts->pid); > + dvb_log(" - scrambling %d", ts->scrambling); > + dvb_log(" - adaptation_field %d", ts->adaptation_field); > + dvb_log(" - continuity_counter %d", ts->continuity_counter); > + if (ts->adaptation_field & 0x2) { > + dvb_log(" Adaption Field"); > + dvb_log(" - length %d", ts->adaption->length); > + dvb_log(" - discontinued %d", > ts->adaption->discontinued); > + dvb_log(" - random_access %d", > ts->adaption->random_access); > + dvb_log(" - priority %d", ts->adaption->priority); > + dvb_log(" - PCR %d", ts->adaption->PCR); > + dvb_log(" - OPCR %d", ts->adaption->OPCR); > + dvb_log(" - splicing_point %d", > ts->adaption->splicing_point); > + dvb_log(" - private_data %d", > ts->adaption->private_data); > + dvb_log(" - extension %d", ts->adaption->extension); > + } > +} > + -- Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
