RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2024-12-25 16:33:02 +00:00
Code Issues Releases Wiki Activity
546ae23a0c
mpv/demux/demux_ts.c
wm4 8ddfabc535 core: fix SEEK_FACTOR 
Emulate percentage-seeks (SEEK_FACTOR) as normal time-seeks if possible.
This fixes some issues with (let's call it) low quality implementations
of SEEK_FACTOR (e.g. demux_mkv basically interprets this as byte-seek,
and also seeking to 99.9% makes it seek back to the start).

For weird MPEG formats the demuxer level SEEK_FACTOR is still used.
These formats, which can have timestamp resets, are identified by
setting demuxer->ts_resets_possible to true.

Also, have get_current_pos_ratio() follow the same rules, and calculate
the percentage position with the file position if timestamp resets are
possible.

This actually fixes percentage-seeks in .ts files with demux_lavf.c.
This kind of seek is not really used now, but it will be more important
when we add a progress bar.

Note: seeking in chained ogg files is still completely broken. The main
issue is that ffmpeg doesn't provide a sane API for dealing with
timestamp resets, and trying to do byte seeks with ogg confuses demuxer
and decoder (or something like this) and just does random things.
(Tested with two concatenated flac-in-ogg files).
2013-03-01 14:44:53 +01:00

3543 lines
81 KiB
C
Raw Blame History

/*
* Demultiplexer for MPEG2 Transport Streams.
*
* Written by Nico <nsabbi@libero.it>
* Kind feedback is appreciated; 'sucks' and alike is not.
* Originally based on demux_pva.c written by Matteo Giani and FFmpeg (libavformat) sources
*
* This file is part of MPlayer.
*
* MPlayer 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; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "core/mp_msg.h"
#include "core/options.h"
#include "audio/decode/dec_audio.h"
#include "stream/stream.h"
#include "demux.h"
#include "parse_es.h"
#include "stheader.h"
#include "ms_hdr.h"
#include "mpeg_hdr.h"
#include "demux_ts.h"
#define TS_PH_PACKET_SIZE 192
#define TS_FEC_PACKET_SIZE 204
#define TS_PACKET_SIZE 188
#define NB_PID_MAX 8192
#define MAX_HEADER_SIZE 6 /* enough for PES header + length */
#define MAX_CHECK_SIZE 65535
#define NUM_CONSECUTIVE_TS_PACKETS 32
#define NUM_CONSECUTIVE_AUDIO_PACKETS 348
#define MAX_A52_FRAME_SIZE 3840
#ifndef SIZE_MAX
#define SIZE_MAX ((size_t)-1)
#endif
#define TYPE_AUDIO 1
#define TYPE_VIDEO 2
#define TYPE_SUB 3
int ts_prog;
int ts_keep_broken=0;
int64_t ts_probe = 0;
int audio_substream_id = -1;
typedef enum
{
UNKNOWN = -1,
VIDEO_MPEG1 = 0x10000001,
VIDEO_MPEG2 = 0x10000002,
VIDEO_MPEG4 = 0x10000004,
VIDEO_H264 = 0x10000005,
VIDEO_AVC = mmioFOURCC('a', 'v', 'c', '1'),
VIDEO_DIRAC = mmioFOURCC('d', 'r', 'a', 'c'),
VIDEO_VC1 = mmioFOURCC('W', 'V', 'C', '1'),
AUDIO_MP2 = 0x50,
AUDIO_A52 = 0x2000,
AUDIO_DTS = 0x2001,
AUDIO_LPCM_BE = 0x10001,
AUDIO_AAC = mmioFOURCC('M', 'P', '4', 'A'),
AUDIO_AAC_LATM = mmioFOURCC('M', 'P', '4', 'L'),
AUDIO_TRUEHD = mmioFOURCC('T', 'R', 'H', 'D'),
AUDIO_S302M = mmioFOURCC('B', 'S', 'S', 'D'),
AUDIO_PCM_BR = mmioFOURCC('B', 'P', 'C', 'M'),
SPU_DVD = 0x3000000,
SPU_DVB = 0x3000001,
SPU_TELETEXT = 0x3000002,
SPU_PGS = 0x3000003,
PES_PRIVATE1 = 0xBD00000,
SL_PES_STREAM = 0xD000000,
SL_SECTION = 0xD100000,
MP4_OD = 0xD200000,
} es_stream_type_t;
typedef struct {
uint8_t *buffer;
uint16_t buffer_len;
} ts_section_t;
typedef struct {
int size;
unsigned char *start;
uint16_t payload_size;
es_stream_type_t type, subtype;
double pts, last_pts;
int pid;
char lang[4];
int last_cc; // last cc code (-1 if first packet)
int is_synced;
ts_section_t section;
uint8_t *extradata;
int extradata_alloc, extradata_len;
struct {
uint8_t au_start, au_end, last_au_end;
} sl;
} ES_stream_t;
typedef struct {
void *sh;
int id;
int type;
} sh_av_t;
typedef struct MpegTSContext {
int packet_size; // raw packet size, including FEC if present e.g. 188 bytes
ES_stream_t *pids[NB_PID_MAX];
sh_av_t streams[NB_PID_MAX];
} MpegTSContext;
typedef struct {
demux_stream_t *ds;
demux_packet_t *pack;
int offset, buffer_size;
} av_fifo_t;
#define MAX_EXTRADATA_SIZE 64*1024
typedef struct {
int32_t object_type; //aka codec used
int32_t stream_type; //video, audio etc.
uint8_t buf[MAX_EXTRADATA_SIZE];
uint16_t buf_size;
uint8_t szm1;
} mp4_decoder_config_t;
typedef struct {
//flags
uint8_t flags;
uint8_t au_start;
uint8_t au_end;
uint8_t random_accesspoint;
uint8_t random_accesspoint_only;
uint8_t padding;
uint8_t use_ts;
uint8_t idle;
uint8_t duration;
uint32_t ts_resolution, ocr_resolution;
uint8_t ts_len, ocr_len, au_len, instant_bitrate_len, degr_len, au_seqnum_len, packet_seqnum_len;
uint32_t timescale;
uint16_t au_duration, cts_duration;
uint64_t ocr, dts, cts;
} mp4_sl_config_t;
typedef struct {
uint16_t id;
uint8_t flags;
mp4_decoder_config_t decoder;
mp4_sl_config_t sl;
} mp4_es_descr_t;
typedef struct {
uint16_t id;
uint8_t flags;
mp4_es_descr_t *es;
uint16_t es_cnt;
} mp4_od_t;
typedef struct {
uint8_t skip;
uint8_t table_id;
uint8_t ssi;
uint16_t section_length;
uint16_t ts_id;
uint8_t version_number;
uint8_t curr_next;
uint8_t section_number;
uint8_t last_section_number;
struct pat_progs_t {
uint16_t id;
uint16_t pmt_pid;
} *progs;
uint16_t progs_cnt;
ts_section_t section;
} pat_t;
typedef struct {
uint16_t progid;
uint8_t skip;
uint8_t table_id;
uint8_t ssi;
uint16_t section_length;
uint8_t version_number;
uint8_t curr_next;
uint8_t section_number;
uint8_t last_section_number;
uint16_t PCR_PID;
uint16_t prog_descr_length;
ts_section_t section;
uint16_t es_cnt;
struct pmt_es_t {
uint16_t pid;
uint32_t type; //it's 8 bit long, but cast to the right type as FOURCC
uint16_t descr_length;
uint8_t format_descriptor[5];
uint8_t lang[4];
uint16_t mp4_es_id;
} *es;
mp4_od_t iod, *od;
mp4_es_descr_t *mp4es;
int od_cnt, mp4es_cnt;
} pmt_t;
typedef struct {
uint64_t size;
float duration;
double first_pts;
double last_pts;
} TS_stream_info;
typedef struct {
MpegTSContext ts;
int last_pid;
av_fifo_t fifo[3]; //0 for audio, 1 for video, 2 for subs
pat_t pat;
pmt_t *pmt;
uint16_t pmt_cnt;
uint32_t prog;
uint32_t vbitrate;
int keep_broken;
int last_aid;
int last_vid;
int last_sid;
char packet[TS_FEC_PACKET_SIZE];
TS_stream_info vstr, astr;
} ts_priv_t;
typedef struct {
es_stream_type_t type;
ts_section_t section;
} TS_pids_t;
static int IS_AUDIO(es_stream_type_t type)
{
switch (type) {
case AUDIO_MP2:
case AUDIO_A52:
case AUDIO_LPCM_BE:
case AUDIO_PCM_BR:
case AUDIO_AAC:
case AUDIO_AAC_LATM:
case AUDIO_DTS:
case AUDIO_TRUEHD:
case AUDIO_S302M:
return 1;
}
return 0;
}
static int IS_VIDEO(es_stream_type_t type)
{
switch (type) {
case VIDEO_MPEG1:
case VIDEO_MPEG2:
case VIDEO_MPEG4:
case VIDEO_H264:
case VIDEO_AVC:
case VIDEO_DIRAC:
case VIDEO_VC1:
return 1;
}
return 0;
}
static int IS_SUB(es_stream_type_t type)
{
switch (type) {
case SPU_DVD:
case SPU_DVB:
case SPU_PGS:
case SPU_TELETEXT:
return 1;
}
return 0;
}
static int ts_parse(demuxer_t *demuxer, ES_stream_t *es, unsigned char *packet, int probe);
static uint8_t get_packet_size(const unsigned char *buf, int size)
{
int i;
if (size < (TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS))
return 0;
for(i=0; i<NUM_CONSECUTIVE_TS_PACKETS; i++)
{
if (buf[i * TS_PACKET_SIZE] != 0x47)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "GET_PACKET_SIZE, pos %d, char: %2x\n", i, buf[i * TS_PACKET_SIZE]);
goto try_fec;
}
}
return TS_PACKET_SIZE;
try_fec:
for(i=0; i<NUM_CONSECUTIVE_TS_PACKETS; i++)
{
if (buf[i * TS_FEC_PACKET_SIZE] != 0x47){
mp_msg(MSGT_DEMUX, MSGL_DBG2, "GET_PACKET_SIZE, pos %d, char: %2x\n", i, buf[i * TS_PACKET_SIZE]);
goto try_philips;
}
}
return TS_FEC_PACKET_SIZE;
try_philips:
for(i=0; i<NUM_CONSECUTIVE_TS_PACKETS; i++)
{
if (buf[i * TS_PH_PACKET_SIZE] != 0x47)
return 0;
}
return TS_PH_PACKET_SIZE;
}
static int parse_avc_sps(uint8_t *buf, int len, int *w, int *h);
static uint8_t *pid_lang_from_pmt(ts_priv_t *priv, int pid);
static void ts_add_stream(demuxer_t * demuxer, ES_stream_t *es)
{
int i;
ts_priv_t *priv = (ts_priv_t*) demuxer->priv;
if(priv->ts.streams[es->pid].sh)
return;
if((IS_AUDIO(es->type) || IS_AUDIO(es->subtype)) && priv->last_aid+1 < MAX_A_STREAMS)
{
sh_audio_t *sh = new_sh_audio_aid(demuxer, priv->last_aid, es->pid);
if(sh)
{
const char *lang = pid_lang_from_pmt(priv, es->pid);
sh->needs_parsing = 1;
sh->format = IS_AUDIO(es->type) ? es->type : es->subtype;
mp_set_audio_codec_from_tag(sh);
sh->ds = demuxer->audio;
priv->ts.streams[es->pid].id = priv->last_aid;
priv->ts.streams[es->pid].sh = sh;
priv->ts.streams[es->pid].type = TYPE_AUDIO;
mp_msg(MSGT_DEMUX, MSGL_V, "\r\nADDED AUDIO PID %d, type: %x stream n. %d\r\n", es->pid, sh->format, priv->last_aid);
if (lang && lang[0])
mp_msg(MSGT_IDENTIFY, MSGL_V, "ID_AID_%d_LANG=%s\n", es->pid, lang);
priv->last_aid++;
if(es->extradata && es->extradata_len)
{
sh->wf = malloc(sizeof(*sh->wf) + es->extradata_len);
sh->wf->cbSize = es->extradata_len;
memcpy(sh->wf + 1, es->extradata, es->extradata_len);
}
}
}
if((IS_VIDEO(es->type) || IS_VIDEO(es->subtype)) && priv->last_vid+1 < MAX_V_STREAMS)
{
sh_video_t *sh = new_sh_video_vid(demuxer, priv->last_vid, es->pid);
if(sh)
{
sh->format = IS_VIDEO(es->type) ? es->type : es->subtype;
mp_set_video_codec_from_tag(sh);
sh->ds = demuxer->video;
priv->ts.streams[es->pid].id = priv->last_vid;
priv->ts.streams[es->pid].sh = sh;
priv->ts.streams[es->pid].type = TYPE_VIDEO;
mp_msg(MSGT_DEMUX, MSGL_V, "\r\nADDED VIDEO PID %d, type: %x stream n. %d\r\n", es->pid, sh->format, priv->last_vid);
priv->last_vid++;
if(sh->format == VIDEO_AVC && es->extradata && es->extradata_len)
{
int w = 0, h = 0;
sh->bih = calloc(1, sizeof(*sh->bih) + es->extradata_len);
sh->bih->biSize= sizeof(*sh->bih) + es->extradata_len;
sh->bih->biCompression = sh->format;
memcpy(sh->bih + 1, es->extradata, es->extradata_len);
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "EXTRADATA(%d BYTES): \n", es->extradata_len);
for(i = 0;i < es->extradata_len; i++)
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "%02x ", (int) es->extradata[i]);
mp_msg(MSGT_DEMUXER,MSGL_DBG2,"\n");
if(parse_avc_sps(es->extradata, es->extradata_len, &w, &h))
{
sh->bih->biWidth = w;
sh->bih->biHeight = h;
}
}
}
}
if(IS_SUB(es->type) && priv->last_sid+1 < MAX_S_STREAMS)
{
sh_sub_t *sh = new_sh_sub_sid_lang(demuxer, priv->last_sid, es->pid, pid_lang_from_pmt(priv, es->pid));
if (sh) {
switch (es->type) {
case SPU_DVB:
sh->type = 'b'; break;
case SPU_DVD:
sh->type = 'v'; break;
case SPU_PGS:
sh->type = 'p'; break;
}
priv->ts.streams[es->pid].id = priv->last_sid;
priv->ts.streams[es->pid].sh = sh;
priv->ts.streams[es->pid].type = TYPE_SUB;
priv->last_sid++;
}
}
}
static int ts_check_file(demuxer_t * demuxer)
{
const int buf_size = (TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS);
unsigned char buf[TS_FEC_PACKET_SIZE * NUM_CONSECUTIVE_TS_PACKETS], done = 0, *ptr;
uint32_t _read, i, count = 0, is_ts;
int cc[NB_PID_MAX], last_cc[NB_PID_MAX], pid, cc_ok, c, good, bad;
uint8_t size = 0;
int64_t pos = 0;
int64_t init_pos;
mp_msg(MSGT_DEMUX, MSGL_V, "Checking for MPEG-TS...\n");
init_pos = stream_tell(demuxer->stream);
is_ts = 0;
while(! done)
{
i = 1;
c = 0;
while(((c=stream_read_char(demuxer->stream)) != 0x47)
&& (c >= 0)
&& (i < MAX_CHECK_SIZE)
&& ! demuxer->stream->eof
) i++;
if(c != 0x47)
{
mp_msg(MSGT_DEMUX, MSGL_V, "THIS DOESN'T LOOK LIKE AN MPEG-TS FILE!\n");
is_ts = 0;
done = 1;
continue;
}
pos = stream_tell(demuxer->stream) - 1;
buf[0] = c;
_read = stream_read(demuxer->stream, &buf[1], buf_size-1);
if(_read < buf_size-1)
{
mp_msg(MSGT_DEMUX, MSGL_V, "COULDN'T READ ENOUGH DATA, EXITING TS_CHECK\n");
stream_reset(demuxer->stream);
return 0;
}
size = get_packet_size(buf, buf_size);
if(size)
{
done = 1;
is_ts = 1;
}
if(pos - init_pos >= MAX_CHECK_SIZE)
{
done = 1;
is_ts = 0;
}
}
mp_msg(MSGT_DEMUX, MSGL_V, "TRIED UP TO POSITION %"PRIu64", FOUND %x, packet_size= %d, SEEMS A TS? %d\n", (uint64_t) pos, c, size, is_ts);
stream_seek(demuxer->stream, pos);
if(! is_ts)
return 0;
//LET'S CHECK continuity counters
good = bad = 0;
for(count = 0; count < NB_PID_MAX; count++)
{
cc[count] = last_cc[count] = -1;
}
for(count = 0; count < NUM_CONSECUTIVE_TS_PACKETS; count++)
{
ptr = &(buf[size * count]);
pid = ((ptr[1] & 0x1f) << 8) | ptr[2];
mp_msg(MSGT_DEMUX, MSGL_DBG2, "BUF: %02x %02x %02x %02x, PID %d, SIZE: %d \n",
ptr[0], ptr[1], ptr[2], ptr[3], pid, size);
if((pid == 8191) || (pid < 16))
continue;
cc[pid] = (ptr[3] & 0xf);
cc_ok = (last_cc[pid] < 0) || ((((last_cc[pid] + 1) & 0x0f) == cc[pid]));
mp_msg(MSGT_DEMUX, MSGL_DBG2, "PID %d, COMPARE CC %d AND LAST_CC %d\n", pid, cc[pid], last_cc[pid]);
if(! cc_ok)
//return 0;
bad++;
else
good++;
last_cc[pid] = cc[pid];
}
mp_msg(MSGT_DEMUX, MSGL_V, "GOOD CC: %d, BAD CC: %d\n", good, bad);
if(good >= bad)
return size;
else
return 0;
}
static int32_t progid_idx_in_pmt(ts_priv_t *priv, uint16_t progid)
{
int x;
if(priv->pmt == NULL)
return -1;
for(x = 0; x < priv->pmt_cnt; x++)
{
if(priv->pmt[x].progid == progid)
return x;
}
return -1;
}
static int32_t progid_for_pid(ts_priv_t *priv, int pid, int32_t req) //finds the first program listing a pid
{
int i, j;
pmt_t *pmt;
if(priv->pmt == NULL)
return -1;
for(i=0; i < priv->pmt_cnt; i++)
{
pmt = &(priv->pmt[i]);
if(pmt->es == NULL)
return -1;
for(j = 0; j < pmt->es_cnt; j++)
{
if(pmt->es[j].pid == pid)
{
if((req == 0) || (req == pmt->progid))
return pmt->progid;
}
}
}
return -1;
}
static int32_t prog_pcr_pid(ts_priv_t *priv, int progid)
{
int i;
if(priv->pmt == NULL)
return -1;
for(i=0; i < priv->pmt_cnt; i++)
{
if(priv->pmt[i].progid == progid)
return priv->pmt[i].PCR_PID;
}
return -1;
}
static int pid_match_lang(ts_priv_t *priv, uint16_t pid, char *lang)
{
uint16_t i, j;
pmt_t *pmt;
if(priv->pmt == NULL)
return -1;
for(i=0; i < priv->pmt_cnt; i++)
{
pmt = &(priv->pmt[i]);
if(pmt->es == NULL)
return -1;
for(j = 0; j < pmt->es_cnt; j++)
{
if(pmt->es[j].pid != pid)
continue;
mp_msg(MSGT_DEMUXER, MSGL_V, "CMP LANG %s AND %s, pids: %d %d\n",pmt->es[j].lang, lang, pmt->es[j].pid, pid);
if(strncmp(pmt->es[j].lang, lang, 3) == 0)
{
return 1;
}
}
}
return -1;
}
typedef struct {
int32_t atype, vtype, stype; //types
int32_t apid, vpid, spid; //stream ids
char alang[4]; //languages
uint16_t prog;
int64_t probe;
} tsdemux_init_t;
//second stage: returns the count of A52 syncwords found
static int a52_check(char *buf, int len)
{
int cnt, frame_length = 0, ok, srate;
cnt = ok = 0;
if(len < 8)
return 0;
while(cnt < len - 7)
{
if(buf[cnt] == 0x0B && buf[cnt+1] == 0x77)
{
frame_length = mp_a52_framesize(&buf[cnt], &srate);
if(frame_length>=7 && frame_length<=3840)
{
cnt += frame_length;
ok++;
}
else
cnt++;
}
else
cnt++;
}
mp_msg(MSGT_DEMUXER, MSGL_V, "A52_CHECK(%d input bytes), found %d frame syncwords of %d bytes length\n", len, ok, frame_length);
return ok;
}
static int64_t ts_detect_streams(demuxer_t *demuxer, tsdemux_init_t *param)
{
int video_found = 0, audio_found = 0, i, num_packets = 0, req_apid, req_vpid, req_spid;
int is_audio, is_video, is_sub, has_tables;
int32_t p, chosen_pid = 0;
int64_t pos=0, ret = 0, init_pos, end_pos;
ES_stream_t es;
unsigned char tmp[TS_FEC_PACKET_SIZE];
ts_priv_t *priv = (ts_priv_t*) demuxer->priv;
struct {
char *buf;
int pos;
} pes_priv1[8192], *pptr;
char *tmpbuf;
priv->last_pid = 8192; //invalid pid
req_apid = param->apid;
req_vpid = param->vpid;
req_spid = param->spid;
has_tables = 0;
memset(pes_priv1, 0, sizeof(pes_priv1));
init_pos = stream_tell(demuxer->stream);
mp_msg(MSGT_DEMUXER, MSGL_V, "PROBING UP TO %"PRIu64", PROG: %d\n", (uint64_t) param->probe, param->prog);
end_pos = init_pos + (param->probe ? param->probe : TS_MAX_PROBE_SIZE);
while(1)
{
pos = stream_tell(demuxer->stream);
if(pos > end_pos || demuxer->stream->eof)
break;
if(ts_parse(demuxer, &es, tmp, 1))
{
//Non PES-aligned A52 audio may escape detection if PMT is not present;
//in this case we try to find at least 3 A52 syncwords
if((es.type == PES_PRIVATE1) && (! audio_found) && req_apid > -2)
{
pptr = &pes_priv1[es.pid];
if(pptr->pos < 64*1024)
{
tmpbuf = realloc(pptr->buf, pptr->pos + es.size);
if(tmpbuf != NULL)
{
pptr->buf = tmpbuf;
memcpy(&(pptr->buf[ pptr->pos ]), es.start, es.size);
pptr->pos += es.size;
if(a52_check(pptr->buf, pptr->pos) > 2)
{
param->atype = AUDIO_A52;
param->apid = es.pid;
es.type = AUDIO_A52;
}
}
}
}
is_audio = IS_AUDIO(es.type) || ((es.type==SL_PES_STREAM) && IS_AUDIO(es.subtype));
is_video = IS_VIDEO(es.type) || ((es.type==SL_PES_STREAM) && IS_VIDEO(es.subtype));
is_sub = IS_SUB(es.type);
if((! is_audio) && (! is_video) && (! is_sub))
continue;
if(is_audio && req_apid==-2)
continue;
if(is_video)
{
chosen_pid = (req_vpid == es.pid);
if((! chosen_pid) && (req_vpid > 0))
continue;
}
else if(is_audio)
{
if(req_apid > 0)
{
chosen_pid = (req_apid == es.pid);
if(! chosen_pid)
continue;
}
else if(param->alang[0] > 0 && es.lang[0] > 0)
{
if(pid_match_lang(priv, es.pid, param->alang) == -1)
continue;
chosen_pid = 1;
param->apid = req_apid = es.pid;
}
}
else if(is_sub)
{
chosen_pid = (req_spid == es.pid);
if((! chosen_pid) && (req_spid > 0))
continue;
}
if(req_apid < 0 && (param->alang[0] == 0) && req_vpid < 0 && req_spid < 0)
chosen_pid = 1;
if((ret == 0) && chosen_pid)
{
ret = stream_tell(demuxer->stream);
}
p = progid_for_pid(priv, es.pid, param->prog);
if(p != -1)
{
has_tables++;
if(!param->prog && chosen_pid)
param->prog = p;
}
if((param->prog > 0) && (param->prog != p))
{
if(audio_found)
{
if(is_video && (req_vpid == es.pid))
{
param->vtype = IS_VIDEO(es.type) ? es.type : es.subtype;
param->vpid = es.pid;
video_found = 1;
break;
}
}
if(video_found)
{
if(is_audio && (req_apid == es.pid))
{
param->atype = IS_AUDIO(es.type) ? es.type : es.subtype;
param->apid = es.pid;
audio_found = 1;
break;
}
}
continue;
}
mp_msg(MSGT_DEMUXER, MSGL_DBG2, "TYPE: %x, PID: %d, PROG FOUND: %d\n", es.type, es.pid, param->prog);
if(is_video)
{
if((req_vpid == -1) || (req_vpid == es.pid))
{
param->vtype = IS_VIDEO(es.type) ? es.type : es.subtype;
param->vpid = es.pid;
video_found = 1;
}
}
if(((req_vpid == -2) || (num_packets >= NUM_CONSECUTIVE_AUDIO_PACKETS)) && audio_found && !param->probe)
{
//novideo or we have at least 348 audio packets (64 KB) without video (TS with audio only)
param->vtype = 0;
break;
}
if(is_sub)
{
if((req_spid == -1) || (req_spid == es.pid))
{
param->stype = es.type;
param->spid = es.pid;
}
}
if(is_audio)
{
if((req_apid == -1) || (req_apid == es.pid))
{
param->atype = IS_AUDIO(es.type) ? es.type : es.subtype;
param->apid = es.pid;
audio_found = 1;
}
}
if(audio_found && (param->apid == es.pid) && (! video_found))
num_packets++;
if((has_tables==0) && (video_found && audio_found) && (pos >= 1000000))
break;
}
}
for(i=0; i<8192; i++)
{
if(pes_priv1[i].buf != NULL)
{
free(pes_priv1[i].buf);
pes_priv1[i].buf = NULL;
pes_priv1[i].pos = 0;
}
}
if(video_found)
{
if(param->vtype == VIDEO_MPEG1)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO MPEG1(pid=%d) ", param->vpid);
else if(param->vtype == VIDEO_MPEG2)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO MPEG2(pid=%d) ", param->vpid);
else if(param->vtype == VIDEO_MPEG4)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO MPEG4(pid=%d) ", param->vpid);
else if(param->vtype == VIDEO_H264)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO H264(pid=%d) ", param->vpid);
else if(param->vtype == VIDEO_VC1)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO VC1(pid=%d) ", param->vpid);
else if(param->vtype == VIDEO_AVC)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "VIDEO AVC(NAL-H264, pid=%d) ", param->vpid);
}
else
{
param->vtype = UNKNOWN;
//WE DIDN'T MATCH ANY VIDEO STREAM
mp_msg(MSGT_DEMUXER, MSGL_INFO, "NO VIDEO! ");
}
if(param->atype == AUDIO_MP2)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO MPA(pid=%d)", param->apid);
else if(param->atype == AUDIO_A52)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO A52(pid=%d)", param->apid);
else if(param->atype == AUDIO_DTS)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO DTS(pid=%d)", param->apid);
else if(param->atype == AUDIO_LPCM_BE)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO LPCM(pid=%d)", param->apid);
else if(param->atype == AUDIO_PCM_BR)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO PCMBR(pid=%d)", param->apid);
else if(param->atype == AUDIO_AAC)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO AAC(pid=%d)", param->apid);
else if(param->atype == AUDIO_AAC_LATM)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO AAC LATM(pid=%d)", param->apid);
else if(param->atype == AUDIO_TRUEHD)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO TRUEHD(pid=%d)", param->apid);
else if(param->atype == AUDIO_S302M)
mp_msg(MSGT_DEMUXER, MSGL_INFO, "AUDIO S302M(pid=%d)", param->apid);
else
{
audio_found = 0;
param->atype = UNKNOWN;
//WE DIDN'T MATCH ANY AUDIO STREAM, SO WE FORCE THE DEMUXER TO IGNORE AUDIO
mp_msg(MSGT_DEMUXER, MSGL_INFO, "NO AUDIO! (try increasing -tsprobe)");
}
if(IS_SUB(param->stype))
mp_msg(MSGT_DEMUXER, MSGL_INFO, " SUB %s(pid=%d) ", (param->stype==SPU_DVD ? "DVD" : param->stype==SPU_DVB ? "DVB" : "Teletext"), param->spid);
else
{
param->stype = UNKNOWN;
mp_msg(MSGT_DEMUXER, MSGL_INFO, " NO SUBS (yet)! ");
}
if(video_found || audio_found)
{
if(!param->prog)
{
p = progid_for_pid(priv, video_found ? param->vpid : param->apid, 0);
if(p != -1)
param->prog = p;
}
if(demuxer->stream->eof && (ret == 0))
ret = init_pos;
mp_msg(MSGT_DEMUXER, MSGL_INFO, " PROGRAM N. %d\n", param->prog);
}
else
mp_msg(MSGT_DEMUXER, MSGL_INFO, "\n");
for(i=0; i<NB_PID_MAX; i++)
{
if(priv->ts.pids[i] != NULL)
{
priv->ts.pids[i]->payload_size = 0;
priv->ts.pids[i]->pts = priv->ts.pids[i]->last_pts = 0;
priv->ts.pids[i]->last_cc = -1;
priv->ts.pids[i]->is_synced = 0;
}
}
return ret;
}
static int parse_avc_sps(uint8_t *buf, int len, int *w, int *h)
{
int sps, sps_len;
unsigned char *ptr;
mp_mpeg_header_t picture;
if(len < 6)
return 0;
sps = buf[5] & 0x1f;
if(!sps)
return 0;
sps_len = (buf[6] << 8) | buf[7];
if(!sps_len || (sps_len > len - 8))
return 0;
ptr = &(buf[8]);
picture.display_picture_width = picture.display_picture_height = 0;
h264_parse_sps(&picture, ptr, len - 8);
if(!picture.display_picture_width || !picture.display_picture_height)
return 0;
*w = picture.display_picture_width;
*h = picture.display_picture_height;
return 1;
}
static demuxer_t *demux_open_ts(demuxer_t * demuxer)
{
int i;
uint8_t packet_size;
sh_video_t *sh_video;
sh_audio_t *sh_audio;
int64_t start_pos;
tsdemux_init_t params;
ts_priv_t * priv = demuxer->priv;
mp_msg(MSGT_DEMUX, MSGL_V, "DEMUX OPEN, AUDIO_ID: %d, VIDEO_ID: %d, SUBTITLE_ID: %d,\n",
demuxer->audio->id, demuxer->video->id, demuxer->sub->id);
demuxer->type= DEMUXER_TYPE_MPEG_TS;
demuxer->ts_resets_possible = true;
stream_reset(demuxer->stream);
packet_size = ts_check_file(demuxer);
if(!packet_size)
return NULL;
priv = calloc(1, sizeof(ts_priv_t));
if(priv == NULL)
{
mp_msg(MSGT_DEMUX, MSGL_FATAL, "DEMUX_OPEN_TS, couldn't allocate enough memory for ts->priv, exit\n");
return NULL;
}
for(i=0; i < NB_PID_MAX; i++)
{
priv->ts.pids[i] = NULL;
priv->ts.streams[i].id = -3;
}
priv->pat.progs = NULL;
priv->pat.progs_cnt = 0;
priv->pat.section.buffer = NULL;
priv->pat.section.buffer_len = 0;
priv->pmt = NULL;
priv->pmt_cnt = 0;
priv->keep_broken = ts_keep_broken;
priv->ts.packet_size = packet_size;
demuxer->priv = priv;
if(demuxer->stream->type != STREAMTYPE_FILE)
demuxer->seekable = 1;
else
demuxer->seekable = 1;
params.atype = params.vtype = params.stype = UNKNOWN;
params.apid = demuxer->audio->id;
params.vpid = demuxer->video->id;
params.spid = demuxer->sub->id;
params.prog = ts_prog;
params.probe = ts_probe;
if(demuxer->opts->audio_lang != NULL)
{
strncpy(params.alang, demuxer->opts->audio_lang[0], 3);
params.alang[3] = 0;
}
else
memset(params.alang, 0, 4);
start_pos = ts_detect_streams(demuxer, &params);
demuxer->sub->id = params.spid;
priv->prog = params.prog;
if(params.vtype != UNKNOWN)
{
ts_add_stream(demuxer, priv->ts.pids[params.vpid]);
sh_video = priv->ts.streams[params.vpid].sh;
demuxer->video->id = priv->ts.streams[params.vpid].id;
sh_video->ds = demuxer->video;
sh_video->format = params.vtype;
mp_set_video_codec_from_tag(sh_video);
demuxer->video->sh = sh_video;
}
if(params.atype != UNKNOWN)
{
ES_stream_t *es = priv->ts.pids[params.apid];
if(!IS_AUDIO(es->type) && !IS_AUDIO(es->subtype) && IS_AUDIO(params.atype)) es->subtype = params.atype;
ts_add_stream(demuxer, priv->ts.pids[params.apid]);
sh_audio = priv->ts.streams[params.apid].sh;
demuxer->audio->id = priv->ts.streams[params.apid].id;
sh_audio->ds = demuxer->audio;
sh_audio->format = params.atype;
mp_set_audio_codec_from_tag(sh_audio);
demuxer->audio->sh = sh_audio;
}
mp_msg(MSGT_DEMUXER,MSGL_V, "Opened TS demuxer, audio: %x(pid %d), video: %x(pid %d)...POS=%"PRIu64", PROBE=%"PRIu64"\n", params.atype, demuxer->audio->id, params.vtype, demuxer->video->id, (uint64_t) start_pos, ts_probe);
start_pos = start_pos <= priv->ts.packet_size ?
demuxer->stream->start_pos :
start_pos - priv->ts.packet_size;
demuxer->movi_start = start_pos;
demuxer->reference_clock = MP_NOPTS_VALUE;
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, start_pos); //IF IT'S FROM A PIPE IT WILL FAIL, BUT WHO CARES?
priv->last_pid = 8192; //invalid pid
for(i = 0; i < 3; i++)
{
priv->fifo[i].pack = NULL;
priv->fifo[i].offset = 0;
}
priv->fifo[0].ds = demuxer->audio;
priv->fifo[1].ds = demuxer->video;
priv->fifo[2].ds = demuxer->sub;
priv->fifo[0].buffer_size = 1536;
priv->fifo[1].buffer_size = 32767;
priv->fifo[2].buffer_size = 32767;
priv->pat.section.buffer_len = 0;
for(i = 0; i < priv->pmt_cnt; i++)
priv->pmt[i].section.buffer_len = 0;
demuxer->filepos = stream_tell(demuxer->stream);
return demuxer;
}
static void demux_close_ts(demuxer_t * demuxer)
{
uint16_t i;
ts_priv_t *priv = (ts_priv_t*) demuxer->priv;
if(priv)
{
free(priv->pat.section.buffer);
free(priv->pat.progs);
if(priv->pmt)
{
for(i = 0; i < priv->pmt_cnt; i++)
{
free(priv->pmt[i].section.buffer);
free(priv->pmt[i].es);
}
free(priv->pmt);
}
for (i = 0; i < NB_PID_MAX; i++)
{
free(priv->ts.pids[i]);
priv->ts.pids[i] = NULL;
}
for (i = 0; i < 3; i++)
{
if (priv->fifo[i].pack)
free_demux_packet(priv->fifo[i].pack);
priv->fifo[i].pack = NULL;
}
free(priv);
}
demuxer->priv=NULL;
}
#define getbits mp_getbits
static int mp4_parse_sl_packet(pmt_t *pmt, uint8_t *buf, uint16_t packet_len, int pid, ES_stream_t *pes_es)
{
int i, n, m, mp4_es_id = -1;
uint64_t v = 0;
uint32_t pl_size = 0;
int deg_flag = 0;
mp4_es_descr_t *es = NULL;
mp4_sl_config_t *sl = NULL;
uint8_t au_start = 0, au_end = 0, rap_flag = 0, ocr_flag = 0, padding = 0, padding_bits = 0, idle = 0;
pes_es->is_synced = 0;
mp_msg(MSGT_DEMUXER,MSGL_V, "mp4_parse_sl_packet, pid: %d, pmt: %pm, packet_len: %d\n", pid, pmt, packet_len);
if(! pmt || !packet_len)
return 0;
for(i = 0; i < pmt->es_cnt; i++)
{
if(pmt->es[i].pid == pid)
mp4_es_id = pmt->es[i].mp4_es_id;
}
if(mp4_es_id < 0)
return -1;
for(i = 0; i < pmt->mp4es_cnt; i++)
{
if(pmt->mp4es[i].id == mp4_es_id)
es = &(pmt->mp4es[i]);
}
if(! es)
return -1;
pes_es->subtype = es->decoder.object_type;
sl = &(es->sl);
if(!sl)
return -1;
//now es is the complete es_descriptor of out mp4 ES stream
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "ID: %d, FLAGS: 0x%x, subtype: %x\n", es->id, sl->flags, pes_es->subtype);
n = 0;
if(sl->au_start)
pes_es->sl.au_start = au_start = getbits(buf, n++, 1);
else
pes_es->sl.au_start = (pes_es->sl.last_au_end ? 1 : 0);
if(sl->au_end)
pes_es->sl.au_end = au_end = getbits(buf, n++, 1);
if(!sl->au_start && !sl->au_end)
{
pes_es->sl.au_start = pes_es->sl.au_end = au_start = au_end = 1;
}
pes_es->sl.last_au_end = pes_es->sl.au_end;
if(sl->ocr_len > 0)
ocr_flag = getbits(buf, n++, 1);
if(sl->idle)
idle = getbits(buf, n++, 1);
if(sl->padding)
padding = getbits(buf, n++, 1);
if(padding)
{
padding_bits = getbits(buf, n, 3);
n += 3;
}
if(idle || (padding && !padding_bits))
{
pes_es->payload_size = 0;
return -1;
}
//(! idle && (!padding || padding_bits != 0)) is true
n += sl->packet_seqnum_len;
if(sl->degr_len)
deg_flag = getbits(buf, n++, 1);
if(deg_flag)
n += sl->degr_len;
if(ocr_flag)
{
n += sl->ocr_len;
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "OCR: %d bits\n", sl->ocr_len);
}
if(packet_len * 8 <= n)
return -1;
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "\nAU_START: %d, AU_END: %d\n", au_start, au_end);
if(au_start)
{
int dts_flag = 0, cts_flag = 0, ib_flag = 0;
if(sl->random_accesspoint)
rap_flag = getbits(buf, n++, 1);
//check commented because it seems it's rarely used, and we need this flag set in case of au_start
//the decoder will eventually discard the payload if it can't decode it
//if(rap_flag || sl->random_accesspoint_only)
pes_es->is_synced = 1;
n += sl->au_seqnum_len;
if(packet_len * 8 <= n+8)
return -1;
if(sl->use_ts)
{
dts_flag = getbits(buf, n++, 1);
cts_flag = getbits(buf, n++, 1);
}
if(sl->instant_bitrate_len)
ib_flag = getbits(buf, n++, 1);
if(packet_len * 8 <= n+8)
return -1;
if(dts_flag && (sl->ts_len > 0))
{
n += sl->ts_len;
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "DTS: %d bits\n", sl->ts_len);
}
if(packet_len * 8 <= n+8)
return -1;
if(cts_flag && (sl->ts_len > 0))
{
int i = 0, m;
while(i < sl->ts_len)
{
m = FFMIN(8, sl->ts_len - i);
v |= getbits(buf, n, m);
if(sl->ts_len - i > 8)
v <<= 8;
i += m;
n += m;
if(packet_len * 8 <= n+8)
return -1;
}
pes_es->pts = (double) v / (double) sl->ts_resolution;
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "CTS: %d bits, value: %"PRIu64"/%d = %.3f\n", sl->ts_len, v, sl->ts_resolution, pes_es->pts);
}
i = 0;
pl_size = 0;
while(i < sl->au_len)
{
m = FFMIN(8, sl->au_len - i);
pl_size |= getbits(buf, n, m);
if(sl->au_len - i > 8)
pl_size <<= 8;
i += m;
n += m;
if(packet_len * 8 <= n+8)
return -1;
}
mp_msg(MSGT_DEMUXER,MSGL_DBG2, "AU_LEN: %u (%d bits)\n", pl_size, sl->au_len);
if(ib_flag)
n += sl->instant_bitrate_len;
}
m = (n+7)/8;
if(0 < pl_size && pl_size < pes_es->payload_size)
pes_es->payload_size = pl_size;
mp_msg(MSGT_DEMUXER,MSGL_V, "mp4_parse_sl_packet, n=%d, m=%d, size from pes hdr: %u, sl hdr size: %u, RAP FLAGS: %d/%d\n",
n, m, pes_es->payload_size, pl_size, (int) rap_flag, (int) sl->random_accesspoint_only);
return m;
}
//this function parses the extension fields in the PES header and returns the substream_id, or -1 in case of errors
static int parse_pes_extension_fields(unsigned char *p, int pkt_len)
{
int skip;
unsigned char flags;
if(!(p[7] & 0x1)) //no extension_field
return -1;
skip = 9;
if(p[7] & 0x80)
{
skip += 5;
if(p[7] & 0x40)
skip += 5;
}
if(p[7] & 0x20) //escr_flag
skip += 6;
if(p[7] & 0x10) //es_rate_flag
skip += 3;
if(p[7] & 0x08)//dsm_trick_mode is unsupported, skip
{
skip = 0;//don't let's parse the extension fields
}
if(p[7] & 0x04) //additional_copy_info
skip += 1;
if(p[7] & 0x02) //pes_crc_flag
skip += 2;
if(skip >= pkt_len) //too few bytes
return -1;
flags = p[skip];
skip++;
if(flags & 0x80) //pes_private_data_flag
skip += 16;
if(skip >= pkt_len)
return -1;
if(flags & 0x40) //pack_header_field_flag
{
unsigned char l = p[skip];
skip += l;
}
if(flags & 0x20) //program_packet_sequence_counter
skip += 2;
if(flags & 0x10) //p_std
skip += 2;
if(skip >= pkt_len)
return -1;
if(flags & 0x01) //finally the long desired pes_extension2
{
unsigned char l = p[skip]; //ext2 flag+len
skip++;
if((l == 0x81) && (skip < pkt_len))
{
int ssid = p[skip];
mp_msg(MSGT_IDENTIFY, MSGL_V, "SUBSTREAM_ID=%d (0x%02X)\n", ssid, ssid);
return ssid;
}
}
return -1;
}
static int pes_parse2(unsigned char *buf, uint16_t packet_len, ES_stream_t *es, int32_t type_from_pmt, pmt_t *pmt, int pid)
{
unsigned char *p;
uint32_t header_len;
int64_t pts;
uint32_t stream_id;
uint32_t pkt_len, pes_is_aligned;
//Here we are always at the start of a PES packet
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2(%p, %d): \n", buf, (uint32_t) packet_len);
if(packet_len == 0 || packet_len > 184)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2, BUFFER LEN IS TOO SMALL OR TOO BIG: %d EXIT\n", packet_len);
return 0;
}
p = buf;
pkt_len = packet_len;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: HEADER %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3]);
if (p[0] || p[1] || (p[2] != 1))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: error HEADER %02x %02x %02x (should be 0x000001) \n", p[0], p[1], p[2]);
return 0 ;
}
packet_len -= 6;
if(packet_len==0)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: packet too short: %d, exit\n", packet_len);
return 0;
}
es->payload_size = (p[4] << 8 | p[5]);
pes_is_aligned = (p[6] & 4);
stream_id = p[3];
if (p[7] & 0x80)
{ /* pts available */
pts = (int64_t)(p[9] & 0x0E) << 29 ;
pts |= p[10] << 22 ;
pts |= (p[11] & 0xFE) << 14 ;
pts |= p[12] << 7 ;
pts |= (p[13] & 0xFE) >> 1 ;
es->pts = pts / 90000.0;
}
else
es->pts = 0.0;
header_len = p[8];
if (header_len + 9 > pkt_len) //9 are the bytes read up to the header_length field
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "demux_ts: illegal value for PES_header_data_length (0x%02x)\n", header_len);
return 0;
}
if(stream_id==0xfd)
{
int ssid = parse_pes_extension_fields(p, pkt_len);
if((audio_substream_id!=-1) && (ssid != audio_substream_id))
return 0;
if(ssid == 0x72 && type_from_pmt != AUDIO_DTS && type_from_pmt != SPU_PGS)
es->type = type_from_pmt = AUDIO_TRUEHD;
}
p += header_len + 9;
packet_len -= header_len + 3;
if(es->payload_size)
es->payload_size -= header_len + 3;
es->is_synced = 1; //only for SL streams we have to make sure it's really true, see below
if (stream_id == 0xbd)
{
mp_msg(MSGT_DEMUX, MSGL_DBG3, "pes_parse2: audio buf = %02X %02X %02X %02X %02X %02X %02X %02X, 80: %d\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[0] & 0x80);
/*
* we check the descriptor tag first because some stations
* do not include any of the A52 header info in their audio tracks
* these "raw" streams may begin with a byte that looks like a stream type.
*/
if(type_from_pmt == SPU_PGS)
{
es->start = p;
es->size = packet_len;
es->type = SPU_PGS;
es->payload_size -= packet_len;
return 1;
}
if(
(type_from_pmt == AUDIO_A52) || /* A52 - raw */
(packet_len >= 2 && p[0] == 0x0B && p[1] == 0x77) /* A52 - syncword */
)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "A52 RAW OR SYNCWORD\n");
es->start = p;
es->size = packet_len;
es->type = AUDIO_A52;
es->payload_size -= packet_len;
return 1;
}
/* SPU SUBS */
else if(type_from_pmt == SPU_DVB ||
(packet_len >= 2 && (p[0] == 0x20) && pes_is_aligned)) // && p[1] == 0x00))
{
// offset/length fiddling to make decoding with lavc possible
es->start = p + 2;
es->size = packet_len - 2;
es->type = SPU_DVB;
es->payload_size -= packet_len;
return 1;
}
else if (pes_is_aligned && packet_len >= 1 && ((p[0] & 0xE0) == 0x20)) //SPU_DVD
{
//DVD SUBS
es->start = p+1;
es->size = packet_len-1;
es->type = SPU_DVD;
es->payload_size -= packet_len;
return 1;
}
else if (pes_is_aligned && packet_len >= 4 && (p[0] & 0xF8) == 0x80)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "A52 WITH HEADER\n");
es->start = p+4;
es->size = packet_len - 4;
es->type = AUDIO_A52;
es->payload_size -= packet_len;
return 1;
}
else if (pes_is_aligned && packet_len >= 1 && ((p[0]&0xf0) == 0xa0))
{
int pcm_offset;
for (pcm_offset=0; ++pcm_offset < packet_len-1 ; )
{
if (p[pcm_offset] == 0x01 && p[pcm_offset+1] == 0x80)
{ /* START */
pcm_offset += 2;
break;
}
}
es->start = p + pcm_offset;
es->size = packet_len - pcm_offset;
es->type = AUDIO_LPCM_BE;
es->payload_size -= packet_len;
return 1;
}
else
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "PES_PRIVATE1\n");
es->start = p;
es->size = packet_len;
es->type = (type_from_pmt == UNKNOWN ? PES_PRIVATE1 : type_from_pmt);
es->payload_size -= packet_len;
return 1;
}
}
else if((stream_id >= 0xe0 && stream_id <= 0xef) || (stream_id == 0xfd && type_from_pmt != UNKNOWN))
{
es->start = p;
es->size = packet_len;
if(type_from_pmt != UNKNOWN)
es->type = type_from_pmt;
else
es->type = VIDEO_MPEG2;
if(es->payload_size)
es->payload_size -= packet_len;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: M2V size %d\n", es->size);
return 1;
}
else if (stream_id == 0xfa)
{
int l;
es->is_synced = 0;
if(type_from_pmt != UNKNOWN) //MP4 A/V or SL
{
es->start = p;
es->size = packet_len;
es->type = type_from_pmt;
if(type_from_pmt == SL_PES_STREAM)
{
//if(pes_is_aligned)
//{
l = mp4_parse_sl_packet(pmt, p, packet_len, pid, es);
mp_msg(MSGT_DEMUX, MSGL_DBG2, "L=%d, TYPE=%x\n", l, type_from_pmt);
if(l < 0)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: couldn't parse SL header, passing along full PES payload\n");
l = 0;
}
//}
es->start += l;
es->size -= l;
}
if(es->payload_size)
es->payload_size -= packet_len;
return 1;
}
}
else if ((stream_id & 0xe0) == 0xc0)
{
es->start = p;
es->size = packet_len;
if(type_from_pmt != UNKNOWN)
es->type = type_from_pmt;
else
es->type = AUDIO_MP2;
es->payload_size -= packet_len;
return 1;
}
else if (type_from_pmt != -1) //as a last resort here we trust the PMT, if present
{
es->start = p;
es->size = packet_len;
es->type = type_from_pmt;
es->payload_size -= packet_len;
return 1;
}
else
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "pes_parse2: unknown packet, id: %x\n", stream_id);
}
es->is_synced = 0;
return 0;
}
static int ts_sync(stream_t *stream)
{
mp_msg(MSGT_DEMUX, MSGL_DBG3, "TS_SYNC \n");
while (!stream->eof)
if (stream_read_char(stream) == 0x47)
return 1;
return 0;
}
static void ts_dump_streams(ts_priv_t *priv)
{
int i;
for(i = 0; i < 3; i++)
{
if((priv->fifo[i].pack != NULL) && (priv->fifo[i].offset != 0))
{
resize_demux_packet(priv->fifo[i].pack, priv->fifo[i].offset);
ds_add_packet(priv->fifo[i].ds, priv->fifo[i].pack);
priv->fifo[i].offset = 0;
priv->fifo[i].pack = NULL;
}
}
}
static int32_t prog_idx_in_pat(ts_priv_t *priv, uint16_t progid)
{
int x;
if(priv->pat.progs == NULL)
return -1;
for(x = 0; x < priv->pat.progs_cnt; x++)
{
if(priv->pat.progs[x].id == progid)
return x;
}
return -1;
}
static int32_t prog_id_in_pat(ts_priv_t *priv, uint16_t pid)
{
int x;
if(priv->pat.progs == NULL)
return -1;
for(x = 0; x < priv->pat.progs_cnt; x++)
{
if(priv->pat.progs[x].pmt_pid == pid)
return priv->pat.progs[x].id;
}
return -1;
}
static int collect_section(ts_section_t *section, int is_start, unsigned char *buff, int size)
{
uint8_t *ptr;
uint16_t tlen;
int skip, tid;
mp_msg(MSGT_DEMUX, MSGL_V, "COLLECT_SECTION, start: %d, size: %d, collected: %d\n", is_start, size, section->buffer_len);
if(! is_start && !section->buffer_len)
return 0;
if(is_start)
{
if(! section->buffer)
{
section->buffer = malloc(4096 + 256);
if(section->buffer == NULL)
return 0;
}
section->buffer_len = 0;
}
if(size + section->buffer_len > 4096+256)
{
mp_msg(MSGT_DEMUX, MSGL_V, "COLLECT_SECTION, excessive len: %d + %d\n", section->buffer_len, size);
return 0;
}
memcpy(&(section->buffer[section->buffer_len]), buff, size);
section->buffer_len += size;
if(section->buffer_len < 3)
return 0;
skip = section->buffer[0];
if(skip + 4 > section->buffer_len)
return 0;
ptr = &(section->buffer[skip + 1]);
tid = ptr[0];
tlen = ((ptr[1] & 0x0f) << 8) | ptr[2];
mp_msg(MSGT_DEMUX, MSGL_V, "SKIP: %d+1, TID: %d, TLEN: %d, COLLECTED: %d\n", skip, tid, tlen, section->buffer_len);
if(section->buffer_len < (skip+1+3+tlen))
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "DATA IS NOT ENOUGH, NEXT TIME\n");
return 0;
}
return skip+1;
}
static int parse_pat(ts_priv_t * priv, int is_start, unsigned char *buff, int size)
{
int skip;
unsigned char *ptr;
unsigned char *base;
int entries, i;
uint16_t progid;
ts_section_t *section;
section = &(priv->pat.section);
skip = collect_section(section, is_start, buff, size);
if(! skip)
return 0;
ptr = &(section->buffer[skip]);
//PARSING
priv->pat.table_id = ptr[0];
if(priv->pat.table_id != 0)
return 0;
priv->pat.ssi = (ptr[1] >> 7) & 0x1;
priv->pat.curr_next = ptr[5] & 0x01;
priv->pat.ts_id = (ptr[3] << 8 ) | ptr[4];
priv->pat.version_number = (ptr[5] >> 1) & 0x1F;
priv->pat.section_length = ((ptr[1] & 0x03) << 8 ) | ptr[2];
priv->pat.section_number = ptr[6];
priv->pat.last_section_number = ptr[7];
//check_crc32(0xFFFFFFFFL, ptr, priv->pat.buffer_len - 4, &ptr[priv->pat.buffer_len - 4]);
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PAT: section_len: %d, section %d/%d\n", priv->pat.section_length, priv->pat.section_number, priv->pat.last_section_number);
entries = (int) (priv->pat.section_length - 9) / 4; //entries per section
for(i=0; i < entries; i++)
{
int32_t idx;
base = &ptr[8 + i*4];
progid = (base[0] << 8) | base[1];
if((idx = prog_idx_in_pat(priv, progid)) == -1)
{
priv->pat.progs = realloc_struct(priv->pat.progs, priv->pat.progs_cnt+1, sizeof(struct pat_progs_t));
if(!priv->pat.progs)
{
int sz = sizeof(struct pat_progs_t) * (priv->pat.progs_cnt+1);
priv->pat.progs_cnt = 0;
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PAT: COULDN'T REALLOC %d bytes, NEXT\n", sz);
break;
}
idx = priv->pat.progs_cnt;
priv->pat.progs_cnt++;
}
priv->pat.progs[idx].id = progid;
priv->pat.progs[idx].pmt_pid = ((base[2] & 0x1F) << 8) | base[3];
mp_msg(MSGT_DEMUX, MSGL_V, "PROG: %d (%d-th of %d), PMT: %d\n", priv->pat.progs[idx].id, i+1, entries, priv->pat.progs[idx].pmt_pid);
mp_msg(MSGT_IDENTIFY, MSGL_V, "PROGRAM_ID=%d (0x%02X), PMT_PID: %d(0x%02X)\n",
progid, progid, priv->pat.progs[idx].pmt_pid, priv->pat.progs[idx].pmt_pid);
}
return 1;
}
static int32_t es_pid_in_pmt(pmt_t * pmt, uint16_t pid)
{
uint16_t i;
if(pmt == NULL)
return -1;
if(pmt->es == NULL)
return -1;
for(i = 0; i < pmt->es_cnt; i++)
{
if(pmt->es[i].pid == pid)
return (int32_t) i;
}
return -1;
}
static uint16_t get_mp4_desc_len(uint8_t *buf, int *len)
{
//uint16_t i = 0, size = 0;
int i = 0, j, size = 0;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "PARSE_MP4_DESC_LEN(%d), bytes: ", *len);
j = FFMIN(*len, 4);
while(i < j)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, " %x ", buf[i]);
size |= (buf[i] & 0x7f);
if(!(buf[i] & 0x80))
break;
size <<= 7;
i++;
}
mp_msg(MSGT_DEMUX, MSGL_DBG2, ", SIZE=%d\n", size);
*len = i+1;
return size;
}
static uint16_t parse_mp4_slconfig_descriptor(uint8_t *buf, int len, void *elem)
{
int i = 0;
mp4_es_descr_t *es;
mp4_sl_config_t *sl;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_SLCONFIG_DESCRIPTOR(%d)\n", len);
es = (mp4_es_descr_t *) elem;
if(!es)
{
mp_msg(MSGT_DEMUX, MSGL_V, "argh! NULL elem passed, skip\n");
return len;
}
sl = &(es->sl);
sl->ts_len = sl->ocr_len = sl->au_len = sl->instant_bitrate_len = sl->degr_len = sl->au_seqnum_len = sl->packet_seqnum_len = 0;
sl->ocr = sl->dts = sl->cts = 0;
if(buf[0] == 0)
{
i++;
sl->flags = buf[i];
i++;
sl->ts_resolution = (buf[i] << 24) | (buf[i+1] << 16) | (buf[i+2] << 8) | buf[i+3];
i += 4;
sl->ocr_resolution = (buf[i] << 24) | (buf[i+1] << 16) | (buf[i+2] << 8) | buf[i+3];
i += 4;
sl->ts_len = buf[i];
i++;
sl->ocr_len = buf[i];
i++;
sl->au_len = buf[i];
i++;
sl->instant_bitrate_len = buf[i];
i++;
sl->degr_len = (buf[i] >> 4) & 0x0f;
sl->au_seqnum_len = ((buf[i] & 0x0f) << 1) | ((buf[i+1] >> 7) & 0x01);
i++;
sl->packet_seqnum_len = ((buf[i] >> 2) & 0x1f);
i++;
}
else if(buf[0] == 1)
{
sl->flags = 0;
sl->ts_resolution = 1000;
sl->ts_len = 32;
i++;
}
else if(buf[0] == 2)
{
sl->flags = 4;
i++;
}
else
{
sl->flags = 0;
i++;
}
sl->au_start = (sl->flags >> 7) & 0x1;
sl->au_end = (sl->flags >> 6) & 0x1;
sl->random_accesspoint = (sl->flags >> 5) & 0x1;
sl->random_accesspoint_only = (sl->flags >> 4) & 0x1;
sl->padding = (sl->flags >> 3) & 0x1;
sl->use_ts = (sl->flags >> 2) & 0x1;
sl->idle = (sl->flags >> 1) & 0x1;
sl->duration = sl->flags & 0x1;
if(sl->duration)
{
sl->timescale = (buf[i] << 24) | (buf[i+1] << 16) | (buf[i+2] << 8) | buf[i+3];
i += 4;
sl->au_duration = (buf[i] << 8) | buf[i+1];
i += 2;
sl->cts_duration = (buf[i] << 8) | buf[i+1];
i += 2;
}
else //no support for fixed durations atm
sl->timescale = sl->au_duration = sl->cts_duration = 0;
mp_msg(MSGT_DEMUX, MSGL_V, "MP4SLCONFIG(len=0x%x), predef: %d, flags: %x, use_ts: %d, tslen: %d, timescale: %d, dts: %"PRIu64", cts: %"PRIu64"\n",
len, buf[0], sl->flags, sl->use_ts, sl->ts_len, sl->timescale, (uint64_t) sl->dts, (uint64_t) sl->cts);
return len;
}
static int parse_mp4_descriptors(pmt_t *pmt, uint8_t *buf, int len, void *elem);
static uint16_t parse_mp4_decoder_config_descriptor(pmt_t *pmt, uint8_t *buf, int len, void *elem)
{
int i = 0, j;
mp4_es_descr_t *es;
mp4_decoder_config_t *dec;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_DECODER_CONFIG_DESCRIPTOR(%d)\n", len);
es = (mp4_es_descr_t *) elem;
if(!es)
{
mp_msg(MSGT_DEMUX, MSGL_V, "argh! NULL elem passed, skip\n");
return len;
}
dec = (mp4_decoder_config_t*) &(es->decoder);
dec->object_type = buf[i];
dec->stream_type = (buf[i+1]>>2) & 0x3f;
if(dec->object_type == 1 && dec->stream_type == 1)
{
dec->object_type = MP4_OD;
dec->stream_type = MP4_OD;
}
else if(dec->stream_type == 4)
{
if(dec->object_type == 0x6a)
dec->object_type = VIDEO_MPEG1;
if(dec->object_type >= 0x60 && dec->object_type <= 0x65)
dec->object_type = VIDEO_MPEG2;
else if(dec->object_type == 0x20)
dec->object_type = VIDEO_MPEG4;
else if(dec->object_type == 0x21)
dec->object_type = VIDEO_AVC;
/*else if(dec->object_type == 0x22)
fprintf(stderr, "TYPE 0x22\n");*/
else dec->object_type = UNKNOWN;
}
else if(dec->stream_type == 5)
{
if(dec->object_type == 0x40)
dec->object_type = AUDIO_AAC;
else if(dec->object_type == 0x6b)
dec->object_type = AUDIO_MP2;
else if(dec->object_type >= 0x66 && dec->object_type <= 0x69)
dec->object_type = AUDIO_MP2;
else
dec->object_type = UNKNOWN;
}
else
dec->object_type = dec->stream_type = UNKNOWN;
if(dec->object_type != UNKNOWN)
{
//update the type of the current stream
for(j = 0; j < pmt->es_cnt; j++)
{
if(pmt->es[j].mp4_es_id == es->id)
{
pmt->es[j].type = SL_PES_STREAM;
}
}
}
if(len > 13)
parse_mp4_descriptors(pmt, &buf[13], len-13, dec);
mp_msg(MSGT_DEMUX, MSGL_V, "MP4DECODER(0x%x), object_type: 0x%x, stream_type: 0x%x\n", len, dec->object_type, dec->stream_type);
return len;
}
static uint16_t parse_mp4_decoder_specific_descriptor(uint8_t *buf, int len, void *elem)
{
int i;
mp4_decoder_config_t *dec;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_DECODER_SPECIFIC_DESCRIPTOR(%d)\n", len);
dec = (mp4_decoder_config_t *) elem;
if(!dec)
{
mp_msg(MSGT_DEMUX, MSGL_V, "argh! NULL elem passed, skip\n");
return len;
}
mp_msg(MSGT_DEMUX, MSGL_DBG2, "MP4 SPECIFIC INFO BYTES: \n");
for(i=0; i<len; i++)
mp_msg(MSGT_DEMUX, MSGL_DBG2, "%02x ", buf[i]);
mp_msg(MSGT_DEMUX, MSGL_DBG2, "\n");
if(len > MAX_EXTRADATA_SIZE)
{
mp_msg(MSGT_DEMUX, MSGL_ERR, "DEMUX_TS, EXTRADATA SUSPICIOUSLY BIG: %d, REFUSED\r\n", len);
return len;
}
memcpy(dec->buf, buf, len);
dec->buf_size = len;
return len;
}
static uint16_t parse_mp4_es_descriptor(pmt_t *pmt, uint8_t *buf, int len)
{
int i = 0, j = 0, k, found;
uint8_t flag;
mp4_es_descr_t es, *target_es = NULL;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4ES: len=%d\n", len);
memset(&es, 0, sizeof(mp4_es_descr_t));
while(i < len)
{
es.id = (buf[i] << 8) | buf[i+1];
mp_msg(MSGT_DEMUX, MSGL_V, "MP4ES_ID: %d\n", es.id);
i += 2;
flag = buf[i];
i++;
if(flag & 0x80)
i += 2;
if(flag & 0x40)
i += buf[i]+1;
if(flag & 0x20) //OCR, maybe we need it
i += 2;
j = parse_mp4_descriptors(pmt, &buf[i], len-i, &es);
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4ES, types after parse_mp4_descriptors: 0x%x, 0x%x\n", es.decoder.object_type, es.decoder.stream_type);
if(es.decoder.object_type != UNKNOWN && es.decoder.stream_type != UNKNOWN)
{
found = 0;
//search this ES_ID if we already have it
for(k=0; k < pmt->mp4es_cnt; k++)
{
if(pmt->mp4es[k].id == es.id)
{
target_es = &(pmt->mp4es[k]);
found = 1;
}
}
if(! found)
{
pmt->mp4es = realloc_struct(pmt->mp4es, pmt->mp4es_cnt+1, sizeof(mp4_es_descr_t));
if(!pmt->mp4es)
{
pmt->mp4es_cnt = 0;
fprintf(stderr, "CAN'T REALLOC MP4_ES_DESCR\n");
continue;
}
target_es = &(pmt->mp4es[pmt->mp4es_cnt]);
pmt->mp4es_cnt++;
}
memcpy(target_es, &es, sizeof(mp4_es_descr_t));
mp_msg(MSGT_DEMUX, MSGL_V, "MP4ES_CNT: %d, ID=%d\n", pmt->mp4es_cnt, target_es->id);
}
i += j;
}
return len;
}
static void parse_mp4_object_descriptor(pmt_t *pmt, uint8_t *buf, int len, void *elem)
{
int i, j = 0, id;
i=0;
id = (buf[0] << 2) | ((buf[1] & 0xc0) >> 6);
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_OBJECT_DESCRIPTOR: len=%d, OD_ID=%d\n", len, id);
if(buf[1] & 0x20)
{
i += buf[2] + 1; //url
mp_msg(MSGT_DEMUX, MSGL_V, "URL\n");
}
else
{
i = 2;
while(i < len)
{
j = parse_mp4_descriptors(pmt, &(buf[i]), len-i, elem);
mp_msg(MSGT_DEMUX, MSGL_V, "OBJD, NOW i = %d, j=%d, LEN=%d\n", i, j, len);
i += j;
}
}
}
static void parse_mp4_iod(pmt_t *pmt, uint8_t *buf, int len, void *elem)
{
int i, j = 0;
mp4_od_t *iod = &(pmt->iod);
iod->id = (buf[0] << 2) | ((buf[1] & 0xc0) >> 6);
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_IOD: len=%d, IOD_ID=%d\n", len, iod->id);
i = 2;
if(buf[1] & 0x20)
{
i += buf[2] + 1; //url
mp_msg(MSGT_DEMUX, MSGL_V, "URL\n");
}
else
{
i = 7;
while(i < len)
{
j = parse_mp4_descriptors(pmt, &(buf[i]), len-i, elem);
mp_msg(MSGT_DEMUX, MSGL_V, "IOD, NOW i = %d, j=%d, LEN=%d\n", i, j, len);
i += j;
}
}
}
static int parse_mp4_descriptors(pmt_t *pmt, uint8_t *buf, int len, void *elem)
{
int tag, descr_len, i = 0, j = 0;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_MP4_DESCRIPTORS, len=%d\n", len);
if(! len)
return len;
while(i < len)
{
tag = buf[i];
j = len - i -1;
descr_len = get_mp4_desc_len(&(buf[i+1]), &j);
mp_msg(MSGT_DEMUX, MSGL_V, "TAG=%d (0x%x), DESCR_len=%d, len=%d, j=%d\n", tag, tag, descr_len, len, j);
if(descr_len > len - j+1)
{
mp_msg(MSGT_DEMUX, MSGL_V, "descriptor is too long, exit\n");
return len;
}
i += j+1;
switch(tag)
{
case 0x1:
parse_mp4_object_descriptor(pmt, &(buf[i]), descr_len, elem);
break;
case 0x2:
parse_mp4_iod(pmt, &(buf[i]), descr_len, elem);
break;
case 0x3:
parse_mp4_es_descriptor(pmt, &(buf[i]), descr_len);
break;
case 0x4:
parse_mp4_decoder_config_descriptor(pmt, &buf[i], descr_len, elem);
break;
case 0x05:
parse_mp4_decoder_specific_descriptor(&buf[i], descr_len, elem);
break;
case 0x6:
parse_mp4_slconfig_descriptor(&buf[i], descr_len, elem);
break;
default:
mp_msg(MSGT_DEMUX, MSGL_V, "Unsupported mp4 descriptor 0x%x\n", tag);
}
i += descr_len;
}
return len;
}
static ES_stream_t *new_pid(ts_priv_t *priv, int pid)
{
ES_stream_t *tss;
tss = calloc(sizeof(*tss), 1);
if(! tss)
return NULL;
tss->pid = pid;
tss->last_cc = -1;
tss->type = UNKNOWN;
tss->subtype = UNKNOWN;
tss->is_synced = 0;
tss->extradata = NULL;
tss->extradata_alloc = tss->extradata_len = 0;
priv->ts.pids[pid] = tss;
return tss;
}
static int parse_program_descriptors(pmt_t *pmt, uint8_t *buf, uint16_t len)
{
uint16_t i = 0, k, olen = len;
while(len > 0)
{
mp_msg(MSGT_DEMUX, MSGL_V, "PROG DESCR, TAG=%x, LEN=%d(%x)\n", buf[i], buf[i+1], buf[i+1]);
if(buf[i+1] > len-2)
{
mp_msg(MSGT_DEMUX, MSGL_V, "ERROR, descriptor len is too long, skipping\n");
return olen;
}
if(buf[i] == 0x1d)
{
if(buf[i+3] == 2) //buggy versions of vlc muxer make this non-standard mess (missing iod_scope)
k = 3;
else
k = 4; //this is standard compliant
parse_mp4_descriptors(pmt, &buf[i+k], (int) buf[i+1]-(k-2), NULL);
}
len -= 2 + buf[i+1];
}
return olen;
}
static int parse_descriptors(struct pmt_es_t *es, uint8_t *ptr)
{
int j, descr_len, len;
j = 0;
len = es->descr_length;
while(len > 2)
{
descr_len = ptr[j+1];
mp_msg(MSGT_DEMUX, MSGL_V, "...descr id: 0x%x, len=%d\n", ptr[j], descr_len);
if(descr_len > len)
{
mp_msg(MSGT_DEMUX, MSGL_ERR, "INVALID DESCR LEN for tag %02x: %d vs %d max, EXIT LOOP\n", ptr[j], descr_len, len);
return -1;
}
if(ptr[j] == 0x6a || ptr[j] == 0x7a) //A52 Descriptor
{
if(es->type == 0x6)
{
es->type = AUDIO_A52;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "DVB A52 Descriptor\n");
}
}
else if(ptr[j] == 0x7b) //DVB DTS Descriptor
{
if(es->type == 0x6)
{
es->type = AUDIO_DTS;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "DVB DTS Descriptor\n");
}
}
else if(ptr[j] == 0x56) // Teletext
{
if(descr_len >= 5) {
memcpy(es->lang, ptr+j+2, 3);
es->lang[3] = 0;
}
es->type = SPU_TELETEXT;
}
else if(ptr[j] == 0x59) //Subtitling Descriptor
{
uint8_t subtype;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Subtitling Descriptor\n");
if(descr_len < 8)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Descriptor length too short for DVB Subtitle Descriptor: %d, SKIPPING\n", descr_len);
}
else
{
memcpy(es->lang, &ptr[j+2], 3);
es->lang[3] = 0;
subtype = ptr[j+5];
if(
(subtype >= 0x10 && subtype <= 0x13) ||
(subtype >= 0x20 && subtype <= 0x23)
)
{
es->type = SPU_DVB;
//page parameters: compo page 2 bytes, ancillary page 2 bytes
}
else
es->type = UNKNOWN;
}
}
else if(ptr[j] == 0x50) //Component Descriptor
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Component Descriptor\n");
memcpy(es->lang, &ptr[j+5], 3);
es->lang[3] = 0;
}
else if(ptr[j] == 0xa) //Language Descriptor
{
memcpy(es->lang, &ptr[j+2], 3);
es->lang[3] = 0;
mp_msg(MSGT_DEMUX, MSGL_V, "Language Descriptor: %s\n", es->lang);
}
else if(ptr[j] == 0x5) //Registration Descriptor (looks like e fourCC :) )
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Registration Descriptor\n");
if(descr_len < 4)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Registration Descriptor length too short: %d, SKIPPING\n", descr_len);
}
else
{
char *d;
memcpy(es->format_descriptor, &ptr[j+2], 4);
es->format_descriptor[4] = 0;
d = &ptr[j+2];
if(d[0] == 'A' && d[1] == 'C' && d[2] == '-' && d[3] == '3')
{
es->type = AUDIO_A52;
}
else if(d[0] == 'D' && d[1] == 'T' && d[2] == 'S' && d[3] == '1')
{
es->type = AUDIO_DTS;
}
else if(d[0] == 'D' && d[1] == 'T' && d[2] == 'S' && d[3] == '2')
{
es->type = AUDIO_DTS;
}
else if(d[0] == 'V' && d[1] == 'C' && d[2] == '-' && d[3] == '1')
{
es->type = VIDEO_VC1;
}
else if(d[0] == 'd' && d[1] == 'r' && d[2] == 'a' && d[3] == 'c')
{
es->type = VIDEO_DIRAC;
}
else if(d[0] == 'B' && d[1] == 'S' && d[2] == 'S' && d[3] == 'D')
{
es->type = AUDIO_S302M;
}
else
es->type = UNKNOWN;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "FORMAT %s\n", es->format_descriptor);
}
}
else if(ptr[j] == 0x1e || ptr[j] == 0x1f)
{
// 0x1f is FMC, but currently it is easiest to handle them the same way
es->mp4_es_id = (ptr[j+2] << 8) | ptr[j+3];
mp_msg(MSGT_DEMUX, MSGL_V, "SL Descriptor: ES_ID: %d(%x), pid: %d\n", es->mp4_es_id, es->mp4_es_id, es->pid);
}
else
mp_msg(MSGT_DEMUX, MSGL_DBG2, "Unknown descriptor 0x%x, SKIPPING\n", ptr[j]);
len -= 2 + descr_len;
j += 2 + descr_len;
}
return 1;
}
static int parse_sl_section(pmt_t *pmt, ts_section_t *section, int is_start, unsigned char *buff, int size)
{
int tid, len, skip;
uint8_t *ptr;
skip = collect_section(section, is_start, buff, size);
if(! skip)
return 0;
ptr = &(section->buffer[skip]);
tid = ptr[0];
len = ((ptr[1] & 0x0f) << 8) | ptr[2];
mp_msg(MSGT_DEMUX, MSGL_V, "TABLEID: %d (av. %d), skip=%d, LEN: %d\n", tid, section->buffer_len, skip, len);
if(len > 4093 || section->buffer_len < len || tid != 5)
{
mp_msg(MSGT_DEMUX, MSGL_V, "SECTION TOO LARGE or wrong section type, EXIT\n");
return 0;
}
if(! (ptr[5] & 1))
return 0;
//8 is the current position, len - 9 is the amount of data available
parse_mp4_descriptors(pmt, &ptr[8], len - 9, NULL);
return 1;
}
static int parse_pmt(ts_priv_t * priv, uint16_t progid, uint16_t pid, int is_start, unsigned char *buff, int size)
{
unsigned char *base, *es_base;
pmt_t *pmt;
int32_t idx, es_count, section_bytes;
uint8_t m=0;
int skip;
ts_section_t *section;
ES_stream_t *tss;
int i;
idx = progid_idx_in_pmt(priv, progid);
if(idx == -1)
{
priv->pmt = realloc_struct(priv->pmt, priv->pmt_cnt + 1, sizeof(pmt_t));
if(!priv->pmt)
{
int sz = (priv->pmt_cnt + 1) * sizeof(pmt_t);
priv->pmt_cnt = 0;
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PMT: COULDN'T REALLOC %d bytes, NEXT\n", sz);
return 0;
}
idx = priv->pmt_cnt;
memset(&(priv->pmt[idx]), 0, sizeof(pmt_t));
priv->pmt_cnt++;
priv->pmt[idx].progid = progid;
}
pmt = &(priv->pmt[idx]);
section = &(pmt->section);
skip = collect_section(section, is_start, buff, size);
if(! skip)
return 0;
base = &(section->buffer[skip]);
mp_msg(MSGT_DEMUX, MSGL_V, "FILL_PMT(prog=%d), PMT_len: %d, IS_START: %d, TS_PID: %d, SIZE=%d, M=%d, ES_CNT=%d, IDX=%d, PMT_PTR=%p\n",
progid, pmt->section.buffer_len, is_start, pid, size, m, pmt->es_cnt, idx, pmt);
pmt->table_id = base[0];
if(pmt->table_id != 2)
return -1;
pmt->ssi = base[1] & 0x80;
pmt->section_length = (((base[1] & 0xf) << 8 ) | base[2]);
pmt->version_number = (base[5] >> 1) & 0x1f;
pmt->curr_next = (base[5] & 1);
pmt->section_number = base[6];
pmt->last_section_number = base[7];
pmt->PCR_PID = ((base[8] & 0x1f) << 8 ) | base[9];
pmt->prog_descr_length = ((base[10] & 0xf) << 8 ) | base[11];
if(pmt->prog_descr_length > pmt->section_length - 9)
{
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT, INVALID PROG_DESCR LENGTH (%d vs %d)\n", pmt->prog_descr_length, pmt->section_length - 9);
return -1;
}
if(pmt->prog_descr_length)
parse_program_descriptors(pmt, &base[12], pmt->prog_descr_length);
es_base = &base[12 + pmt->prog_descr_length]; //the beginning of th ES loop
section_bytes= pmt->section_length - 13 - pmt->prog_descr_length;
es_count = 0;
while(section_bytes >= 5)
{
int es_pid, es_type;
es_type = es_base[0];
es_pid = ((es_base[1] & 0x1f) << 8) | es_base[2];
idx = es_pid_in_pmt(pmt, es_pid);
if(idx == -1)
{
pmt->es = realloc_struct(pmt->es, pmt->es_cnt + 1, sizeof(struct pmt_es_t));
if(!pmt->es)
{
int sz = sizeof(struct pmt_es_t) * (pmt->es_cnt + 1);
pmt->es_cnt = 0;
mp_msg(MSGT_DEMUX, MSGL_ERR, "PARSE_PMT, COULDN'T ALLOCATE %d bytes for PMT_ES\n", sz);
continue;
}
idx = pmt->es_cnt;
memset(&(pmt->es[idx]), 0, sizeof(struct pmt_es_t));
pmt->es_cnt++;
}
pmt->es[idx].descr_length = ((es_base[3] & 0xf) << 8) | es_base[4];
if(pmt->es[idx].descr_length > section_bytes - 5)
{
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT, ES_DESCR_LENGTH TOO LARGE %d > %d, EXIT\n",
pmt->es[idx].descr_length, section_bytes - 5);
return -1;
}
pmt->es[idx].pid = es_pid;
if(es_type != 0x6)
pmt->es[idx].type = UNKNOWN;
else
pmt->es[idx].type = es_type;
parse_descriptors(&pmt->es[idx], &es_base[5]);
switch(es_type)
{
case 1:
pmt->es[idx].type = VIDEO_MPEG1;
break;
case 2:
pmt->es[idx].type = VIDEO_MPEG2;
break;
case 3:
case 4:
pmt->es[idx].type = AUDIO_MP2;
break;
case 6:
if(pmt->es[idx].type == 0x6) //this could have been ovrwritten by parse_descriptors
pmt->es[idx].type = UNKNOWN;
break;
case 0x10:
pmt->es[idx].type = VIDEO_MPEG4;
break;
case 0x0f:
pmt->es[idx].type = AUDIO_AAC;
break;
case 0x11:
pmt->es[idx].type = AUDIO_AAC_LATM;
for (i = 0; i < pmt->mp4es_cnt; i++)
if (pmt->mp4es[i].id == pmt->es[idx].mp4_es_id &&
pmt->mp4es[i].decoder.object_type == AUDIO_AAC)
pmt->es[idx].type = AUDIO_AAC;
break;
case 0x1b:
pmt->es[idx].type = VIDEO_H264;
break;
case 0x12:
pmt->es[idx].type = SL_PES_STREAM;
break;
case 0x13:
pmt->es[idx].type = SL_SECTION;
break;
case 0x80:
pmt->es[idx].type = AUDIO_PCM_BR;
break;
case 0x81:
pmt->es[idx].type = AUDIO_A52;
break;
case 0x8A:
case 0x82:
case 0x85:
case 0x86:
pmt->es[idx].type = AUDIO_DTS;
break;
case 0x90:
pmt->es[idx].type = SPU_PGS;
break;
case 0xD1:
pmt->es[idx].type = VIDEO_DIRAC;
break;
case 0xEA:
pmt->es[idx].type = VIDEO_VC1;
break;
default:
mp_msg(MSGT_DEMUX, MSGL_DBG2, "UNKNOWN ES TYPE=0x%x\n", es_type);
pmt->es[idx].type = UNKNOWN;
}
tss = priv->ts.pids[es_pid]; //an ES stream
if(tss == NULL)
{
tss = new_pid(priv, es_pid);
if(tss)
tss->type = pmt->es[idx].type;
}
section_bytes -= 5 + pmt->es[idx].descr_length;
mp_msg(MSGT_DEMUX, MSGL_V, "PARSE_PMT(%d INDEX %d), STREAM: %d, FOUND pid=0x%x (%d), type=0x%x, ES_DESCR_LENGTH: %d, bytes left: %d\n",
progid, idx, es_count, pmt->es[idx].pid, pmt->es[idx].pid, pmt->es[idx].type, pmt->es[idx].descr_length, section_bytes);
es_base += 5 + pmt->es[idx].descr_length;
es_count++;
}
mp_msg(MSGT_DEMUX, MSGL_V, "----------------------------\n");
return 1;
}
static pmt_t* pmt_of_pid(ts_priv_t *priv, int pid, mp4_decoder_config_t **mp4_dec)
{
int32_t i, j, k;
if(priv->pmt)
{
for(i = 0; i < priv->pmt_cnt; i++)
{
if(priv->pmt[i].es && priv->pmt[i].es_cnt)
{
for(j = 0; j < priv->pmt[i].es_cnt; j++)
{
if(priv->pmt[i].es[j].pid == pid)
{
//search mp4_es_id
if(priv->pmt[i].es[j].mp4_es_id)
{
for(k = 0; k < priv->pmt[i].mp4es_cnt; k++)
{
if(priv->pmt[i].mp4es[k].id == priv->pmt[i].es[j].mp4_es_id)
{
*mp4_dec = &(priv->pmt[i].mp4es[k].decoder);
break;
}
}
}
return &(priv->pmt[i]);
}
}
}
}
}
return NULL;
}
static int32_t pid_type_from_pmt(ts_priv_t *priv, int pid)
{
int32_t pmt_idx, pid_idx, i, j;
pmt_idx = progid_idx_in_pmt(priv, priv->prog);
if(pmt_idx != -1)
{
pid_idx = es_pid_in_pmt(&(priv->pmt[pmt_idx]), pid);
if(pid_idx != -1)
return priv->pmt[pmt_idx].es[pid_idx].type;
}
//else
//{
for(i = 0; i < priv->pmt_cnt; i++)
{
pmt_t *pmt = &(priv->pmt[i]);
for(j = 0; j < pmt->es_cnt; j++)
if(pmt->es[j].pid == pid)
return pmt->es[j].type;
}
//}
return UNKNOWN;
}
static uint8_t *pid_lang_from_pmt(ts_priv_t *priv, int pid)
{
int32_t pmt_idx, pid_idx, i, j;
pmt_idx = progid_idx_in_pmt(priv, priv->prog);
if(pmt_idx != -1)
{
pid_idx = es_pid_in_pmt(&(priv->pmt[pmt_idx]), pid);
if(pid_idx != -1)
return priv->pmt[pmt_idx].es[pid_idx].lang;
}
else
{
for(i = 0; i < priv->pmt_cnt; i++)
{
pmt_t *pmt = &(priv->pmt[i]);
for(j = 0; j < pmt->es_cnt; j++)
if(pmt->es[j].pid == pid)
return pmt->es[j].lang;
}
}
return NULL;
}
static int fill_packet(demuxer_t *demuxer, demux_stream_t *ds, demux_packet_t **dp, int *dp_offset, TS_stream_info *si)
{
int ret = 0;
if(*dp && *dp_offset <= 0)
{
free_demux_packet(*dp);
*dp = NULL;
}
if(*dp)
{
ret = *dp_offset;
resize_demux_packet(*dp, ret); //shrinked to the right size
ds_add_packet(ds, *dp);
mp_msg(MSGT_DEMUX, MSGL_DBG2, "ADDED %d bytes to %s fifo, PTS=%.3f\n", ret, (ds == demuxer->audio ? "audio" : (ds == demuxer->video ? "video" : "sub")), (*dp)->pts);
if(si)
{
float diff = (*dp)->pts - si->last_pts;
float dur;
if(abs(diff) > 1) //1 second, there's a discontinuity
{
si->duration += si->last_pts - si->first_pts;
si->first_pts = si->last_pts = (*dp)->pts;
}
else
{
si->last_pts = (*dp)->pts;
}
si->size += ret;
dur = si->duration + (si->last_pts - si->first_pts);
if(dur > 0 && ds == demuxer->video)
{
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
if(dur > 1) //otherwise it may be unreliable
priv->vbitrate = (uint32_t) ((float) si->size / dur);
}
}
}
*dp = NULL;
*dp_offset = 0;
return ret;
}
static int fill_extradata(mp4_decoder_config_t * mp4_dec, ES_stream_t *tss)
{
uint8_t *tmp;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "MP4_dec: %p, pid: %d\n", mp4_dec, tss->pid);
if(mp4_dec->buf_size > tss->extradata_alloc)
{
tmp = realloc(tss->extradata, mp4_dec->buf_size);
if(!tmp)
return 0;
tss->extradata = tmp;
tss->extradata_alloc = mp4_dec->buf_size;
}
memcpy(tss->extradata, mp4_dec->buf, mp4_dec->buf_size);
tss->extradata_len = mp4_dec->buf_size;
mp_msg(MSGT_DEMUX, MSGL_V, "EXTRADATA: %p, alloc=%d, len=%d\n", tss->extradata, tss->extradata_alloc, tss->extradata_len);
return tss->extradata_len;
}
// 0 = EOF or no stream found
// else = [-] number of bytes written to the packet
static int ts_parse(demuxer_t *demuxer , ES_stream_t *es, unsigned char *packet, int probe)
{
ES_stream_t *tss;
int buf_size, is_start, pid, base;
int len, cc, cc_ok av_unused, afc, retv = 0, is_video, is_audio, is_sub;
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
stream_t *stream = demuxer->stream;
char *p;
demux_stream_t *ds = NULL;
demux_packet_t **dp = NULL;
int *dp_offset = 0, *buffer_size = 0;
int32_t progid, pid_type, bad, ts_error;
int junk = 0, rap_flag = 0;
pmt_t *pmt;
mp4_decoder_config_t *mp4_dec;
TS_stream_info *si;
memset(es, 0, sizeof(*es));
while(1)
{
bad = ts_error = 0;
ds = NULL;
dp = NULL;
dp_offset = buffer_size = NULL;
rap_flag = 0;
mp4_dec = NULL;
es->is_synced = 0;
es->lang[0] = 0;
si = NULL;
junk = priv->ts.packet_size - TS_PACKET_SIZE;
buf_size = priv->ts.packet_size - junk;
if(stream_eof(stream))
{
if(! probe)
{
ts_dump_streams(priv);
demuxer->filepos = stream_tell(demuxer->stream);
}
return 0;
}
if(! ts_sync(stream))
{
mp_msg(MSGT_DEMUX, MSGL_INFO, "TS_PARSE: COULDN'T SYNC\n");
return 0;
}
len = stream_read(stream, &packet[1], 3);
if (len != 3)
return 0;
buf_size -= 4;
if((packet[1] >> 7) & 0x01) //transport error
ts_error = 1;
is_start = packet[1] & 0x40;
pid = ((packet[1] & 0x1f) << 8) | packet[2];
tss = priv->ts.pids[pid]; //an ES stream
if(tss == NULL)
{
tss = new_pid(priv, pid);
if(tss == NULL)
continue;
}
cc = (packet[3] & 0xf);
cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc));
tss->last_cc = cc;
bad = ts_error; // || (! cc_ok);
if(bad)
{
if(priv->keep_broken == 0)
{
stream_skip(stream, buf_size-1+junk);
continue;
}
is_start = 0; //queued to the packet data
}
if(is_start)
tss->is_synced = 1;
if((!is_start && !tss->is_synced) || ((pid > 1) && (pid < 16)) || (pid == 8191)) //invalid pid
{
stream_skip(stream, buf_size-1+junk);
continue;
}
afc = (packet[3] >> 4) & 3;
if(! (afc % 2)) //no payload in this TS packet
{
stream_skip(stream, buf_size-1+junk);
continue;
}
if(afc > 1)
{
int c;
c = stream_read_char(stream);
buf_size--;
if(c < 0 || c > 183) //broken from the stream layer or invalid
{
stream_skip(stream, buf_size-1+junk);
continue;
}
//c==0 is allowed!
if(c > 0)
{
uint8_t pcrbuf[188];
int flags = stream_read_char(stream);
int has_pcr;
rap_flag = (flags & 0x40) >> 6;
has_pcr = flags & 0x10;
buf_size--;
c--;
stream_read(stream, pcrbuf, c);
if(has_pcr)
{
int pcr_pid = prog_pcr_pid(priv, priv->prog);
if(pcr_pid == pid)
{
uint64_t pcr, pcr_ext;
pcr = (int64_t)(pcrbuf[0]) << 25;
pcr |= pcrbuf[1] << 17 ;
pcr |= (pcrbuf[2]) << 9;
pcr |= pcrbuf[3] << 1 ;
pcr |= (pcrbuf[4] & 0x80) >> 7;
pcr_ext = (pcrbuf[4] & 0x01) << 8;
pcr_ext |= pcrbuf[5];
pcr = pcr * 300 + pcr_ext;
demuxer->reference_clock = (double)pcr/(double)27000000.0;
}
}
buf_size -= c;
if(buf_size == 0)
continue;
}
}
//find the program that the pid belongs to; if (it's the right one or -1) && pid_type==SL_SECTION
//call parse_sl_section()
pmt = pmt_of_pid(priv, pid, &mp4_dec);
if(mp4_dec)
{
fill_extradata(mp4_dec, tss);
if(IS_VIDEO(mp4_dec->object_type) || IS_AUDIO(mp4_dec->object_type))
{
tss->type = SL_PES_STREAM;
tss->subtype = mp4_dec->object_type;
}
}
//TABLE PARSING
base = priv->ts.packet_size - buf_size;
priv->last_pid = pid;
is_video = IS_VIDEO(tss->type) || (tss->type==SL_PES_STREAM && IS_VIDEO(tss->subtype));
is_audio = IS_AUDIO(tss->type) || (tss->type==SL_PES_STREAM && IS_AUDIO(tss->subtype)) || (tss->type == PES_PRIVATE1);
is_sub = IS_SUB(tss->type);
pid_type = pid_type_from_pmt(priv, pid);
// PES CONTENT STARTS HERE
if(! probe)
{
if((is_video || is_audio || is_sub) && is_start)
ts_add_stream(demuxer, tss);
if(is_video && (demuxer->video->id == priv->ts.streams[pid].id))
{
ds = demuxer->video;
dp = &priv->fifo[1].pack;
dp_offset = &priv->fifo[1].offset;
buffer_size = &priv->fifo[1].buffer_size;
si = &priv->vstr;
}
else if(is_audio && (demuxer->audio->id == priv->ts.streams[pid].id))
{
ds = demuxer->audio;
dp = &priv->fifo[0].pack;
dp_offset = &priv->fifo[0].offset;
buffer_size = &priv->fifo[0].buffer_size;
si = &priv->astr;
}
else if(is_sub)
{
sh_sub_t *sh_sub = demuxer->sub->sh;
if(sh_sub && sh_sub->sid == tss->pid)
{
ds = demuxer->sub;
dp = &priv->fifo[2].pack;
dp_offset = &priv->fifo[2].offset;
buffer_size = &priv->fifo[2].buffer_size;
}
else
{
stream_skip(stream, buf_size+junk);
continue;
}
}
//IS IT TIME TO QUEUE DATA to the dp_packet?
if(is_start && (dp != NULL))
{
retv = fill_packet(demuxer, ds, dp, dp_offset, si);
}
if(dp && *dp == NULL)
{
if(*buffer_size > MAX_PACK_BYTES)
*buffer_size = MAX_PACK_BYTES;
*dp = new_demux_packet(*buffer_size); //es->size
*dp_offset = 0;
if(! *dp)
{
fprintf(stderr, "fill_buffer, NEW_ADD_PACKET(%d)FAILED\n", *buffer_size);
continue;
}
mp_msg(MSGT_DEMUX, MSGL_DBG2, "CREATED DP(%d)\n", *buffer_size);
}
}
if(probe || !dp) //dp is NULL for tables and sections
{
p = &packet[base];
}
else //feeding
{
if(*dp_offset + buf_size > *buffer_size)
{
*buffer_size = *dp_offset + buf_size + TS_FEC_PACKET_SIZE;
resize_demux_packet(*dp, *buffer_size);
}
p = &((*dp)->buffer[*dp_offset]);
}
len = stream_read(stream, p, buf_size);
if(len < buf_size)
{
mp_msg(MSGT_DEMUX, MSGL_DBG2, "\r\nts_parse() couldn't read enough data: %d < %d\r\n", len, buf_size);
continue;
}
stream_skip(stream, junk);
if(pid == 0)
{
parse_pat(priv, is_start, p, buf_size);
continue;
}
else if((tss->type == SL_SECTION) && pmt)
{
int k, mp4_es_id = -1;
ts_section_t *section;
for(k = 0; k < pmt->mp4es_cnt; k++)
{
if(pmt->mp4es[k].decoder.object_type == MP4_OD && pmt->mp4es[k].decoder.stream_type == MP4_OD)
mp4_es_id = pmt->mp4es[k].id;
}
mp_msg(MSGT_DEMUX, MSGL_DBG2, "MP4ESID: %d\n", mp4_es_id);
for(k = 0; k < pmt->es_cnt; k++)
{
if(pmt->es[k].mp4_es_id == mp4_es_id)
{
section = &(tss->section);
parse_sl_section(pmt, section, is_start, &packet[base], buf_size);
}
}
continue;
}
else
{
progid = prog_id_in_pat(priv, pid);
if(progid != -1)
{
if(pid != demuxer->video->id && pid != demuxer->audio->id && pid != demuxer->sub->id)
{
parse_pmt(priv, progid, pid, is_start, &packet[base], buf_size);
continue;
}
else
mp_msg(MSGT_DEMUX, MSGL_ERR, "Argh! Data pid %d used in the PMT, Skipping PMT parsing!\n", pid);
}
}
if(!probe && !dp)
continue;
if(is_start)
{
uint8_t *lang = NULL;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "IS_START\n");
len = pes_parse2(p, buf_size, es, pid_type, pmt, pid);
if(! len)
{
tss->is_synced = 0;
continue;
}
es->pid = tss->pid;
tss->is_synced |= es->is_synced || rap_flag;
tss->payload_size = es->payload_size;
if((is_sub || is_audio) && (lang = pid_lang_from_pmt(priv, es->pid)))
{
memcpy(es->lang, lang, 3);
es->lang[3] = 0;
}
else
es->lang[0] = 0;
if(probe)
{
if(es->type == UNKNOWN)
return 0;
tss->type = es->type;
tss->subtype = es->subtype;
return 1;
}
else
{
if(es->pts == 0.0)
es->pts = tss->pts = tss->last_pts;
else
tss->pts = tss->last_pts = es->pts;
mp_msg(MSGT_DEMUX, MSGL_DBG2, "ts_parse, NEW pid=%d, PSIZE: %u, type=%X, start=%p, len=%d\n",
es->pid, es->payload_size, es->type, es->start, es->size);
demuxer->filepos = stream_tell(demuxer->stream) - es->size;
if(es->size < 0 || es->size > buf_size) {
mp_msg(MSGT_DEMUX, MSGL_ERR, "Broken ES packet size\n");
es->size = 0;
}
memmove(p, es->start, es->size);
*dp_offset += es->size;
(*dp)->keyframe = 0;
(*dp)->pos = stream_tell(demuxer->stream);
(*dp)->pts = es->pts;
// subtitle packets must be returned immediately if possible
if (is_sub && !tss->payload_size)
retv = fill_packet(demuxer, ds, dp, dp_offset, si);
if(retv > 0)
return retv;
else
continue;
}
}
else
{
uint16_t sz;
es->pid = tss->pid;
es->type = tss->type;
es->subtype = tss->subtype;
es->pts = tss->pts = tss->last_pts;
es->start = &packet[base];
if(tss->payload_size > 0)
{
sz = FFMIN(tss->payload_size, buf_size);
tss->payload_size -= sz;
es->size = sz;
}
else
{
if(is_video)
{
sz = es->size = buf_size;
}
else
{
continue;
}
}
if(! probe)
{
*dp_offset += sz;
// subtitle packets must be returned immediately if possible
if(*dp_offset >= MAX_PACK_BYTES || (is_sub && !tss->payload_size))
{
(*dp)->pts = tss->last_pts;
retv = fill_packet(demuxer, ds, dp, dp_offset, si);
return 1;
}
continue;
}
else
{
memmove(es->start, p, sz);
if(es->size)
return es->size;
else
continue;
}
}
}
return 0;
}
static void reset_fifos(demuxer_t *demuxer, int a, int v, int s)
{
ts_priv_t* priv = demuxer->priv;
if(a)
{
if(priv->fifo[0].pack != NULL)
{
free_demux_packet(priv->fifo[0].pack);
priv->fifo[0].pack = NULL;
}
priv->fifo[0].offset = 0;
}
if(v)
{
if(priv->fifo[1].pack != NULL)
{
free_demux_packet(priv->fifo[1].pack);
priv->fifo[1].pack = NULL;
}
priv->fifo[1].offset = 0;
}
if(s)
{
if(priv->fifo[2].pack != NULL)
{
free_demux_packet(priv->fifo[2].pack);
priv->fifo[2].pack = NULL;
}
priv->fifo[2].offset = 0;
}
demuxer->reference_clock = MP_NOPTS_VALUE;
}
static void demux_seek_ts(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
{
demux_stream_t *d_audio=demuxer->audio;
demux_stream_t *d_video=demuxer->video;
sh_audio_t *sh_audio=d_audio->sh;
sh_video_t *sh_video=d_video->sh;
ts_priv_t * priv = (ts_priv_t*) demuxer->priv;
int i, video_stats;
int64_t newpos;
//================= seek in MPEG-TS ==========================
ts_dump_streams(demuxer->priv);
reset_fifos(demuxer, sh_audio != NULL, sh_video != NULL, demuxer->sub->id > 0);
demux_flush(demuxer);
video_stats = (sh_video != NULL);
if(video_stats)
{
mp_msg(MSGT_DEMUX, MSGL_V, "IBPS: %d, vb: %d\r\n", sh_video->i_bps, priv->vbitrate);
if(priv->vbitrate)
video_stats = priv->vbitrate;
else
video_stats = sh_video->i_bps;
}
newpos = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : demuxer->filepos;
if(flags & SEEK_FACTOR) // float seek 0..1
newpos+=(demuxer->movi_end-demuxer->movi_start)*rel_seek_secs;
else
{
// time seek (secs)
if(! video_stats) // unspecified or VBR
newpos += 2324*75*rel_seek_secs; // 174.3 kbyte/sec
else
newpos += video_stats*rel_seek_secs;
}
if(newpos < demuxer->movi_start)
newpos = demuxer->movi_start; //begininng of stream
stream_seek(demuxer->stream, newpos);
for(i = 0; i < NB_PID_MAX; i++)
if(priv->ts.pids[i] != NULL)
priv->ts.pids[i]->is_synced = 0;
videobuf_code_len = 0;
if(sh_video != NULL)
ds_fill_buffer(d_video);
if(sh_audio != NULL)
{
ds_fill_buffer(d_audio);
}
while(sh_video != NULL)
{
if(sh_audio && !d_audio->eof && d_video->pts && d_audio->pts)
{
double a_pts=d_audio->pts;
a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(double)sh_audio->i_bps;
if(d_video->pts > a_pts)
{
skip_audio_frame(sh_audio); // sync audio
continue;
}
}
i = sync_video_packet(d_video);
if((sh_video->format == VIDEO_MPEG1) || (sh_video->format == VIDEO_MPEG2))
{
if(i==0x1B3 || i==0x1B8) break; // found it!
}
else if((sh_video->format == VIDEO_MPEG4) && (i==0x1B6))
break;
else if(sh_video->format == VIDEO_VC1 && (i==0x10E || i==0x10F))
break;
else //H264
{
if((i & ~0x60) == 0x105 || (i & ~0x60) == 0x107) break;
}
if(!i || !skip_video_packet(d_video)) break; // EOF?
}
}
static int demux_ts_fill_buffer(demuxer_t * demuxer, demux_stream_t *ds)
{
ES_stream_t es;
ts_priv_t *priv = (ts_priv_t *)demuxer->priv;
return -ts_parse(demuxer, &es, priv->packet, 0);
}
static int ts_check_file_dmx(demuxer_t *demuxer)
{
return ts_check_file(demuxer) ? DEMUXER_TYPE_MPEG_TS : 0;
}
static int is_usable_program(ts_priv_t *priv, pmt_t *pmt)
{
int j;
for(j = 0; j < pmt->es_cnt; j++)
{
if(priv->ts.pids[pmt->es[j].pid] == NULL || priv->ts.streams[pmt->es[j].pid].sh == NULL)
continue;
if(
priv->ts.streams[pmt->es[j].pid].type == TYPE_VIDEO ||
priv->ts.streams[pmt->es[j].pid].type == TYPE_AUDIO
)
return 1;
}
return 0;
}
static int demux_ts_control(demuxer_t *demuxer, int cmd, void *arg)
{
ts_priv_t* priv = (ts_priv_t *)demuxer->priv;
switch(cmd)
{
case DEMUXER_CTRL_SWITCH_AUDIO:
case DEMUXER_CTRL_SWITCH_VIDEO:
{
void *sh = NULL;
int i, n;
int reftype, areset = 0, vreset = 0;
demux_stream_t *ds;
if(cmd == DEMUXER_CTRL_SWITCH_VIDEO)
{
reftype = TYPE_VIDEO;
ds = demuxer->video;
vreset = 1;
}
else
{
reftype = TYPE_AUDIO;
ds = demuxer->audio;
areset = 1;
}
n = *((int*)arg);
if(n == -2)
{
reset_fifos(demuxer, areset, vreset, 0);
ds->id = -2;
ds->sh = NULL;
ds_free_packs(ds);
*((int*)arg) = ds->id;
return DEMUXER_CTRL_OK;
}
if(n < 0)
{
for(i = 0; i < 8192; i++)
{
if(priv->ts.streams[i].id == ds->id && priv->ts.streams[i].type == reftype)
break;
}
while(!sh)
{
i = (i+1) % 8192;
if(priv->ts.streams[i].type == reftype)
{
if(priv->ts.streams[i].id == ds->id) //we made a complete loop
break;
sh = priv->ts.streams[i].sh;
}
}
}
else //audio track <n>
{
if (n >= 8192 || priv->ts.streams[n].type != reftype) return DEMUXER_CTRL_NOTIMPL;
i = n;
sh = priv->ts.streams[i].sh;
}
if(sh)
{
if(ds->id != priv->ts.streams[i].id)
reset_fifos(demuxer, areset, vreset, 0);
ds->id = priv->ts.streams[i].id;
ds->sh = sh;
ds_free_packs(ds);
mp_msg(MSGT_DEMUX, MSGL_V, "\r\ndemux_ts, switched to audio pid %d, id: %d, sh: %p\r\n", i, ds->id, sh);
}
*((int*)arg) = ds->id;
return DEMUXER_CTRL_OK;
}
case DEMUXER_CTRL_IDENTIFY_PROGRAM: //returns in prog->{aid,vid} the new ids that comprise a program
{
int i, j, cnt=0;
int vid_done=0, aid_done=0;
pmt_t *pmt = NULL;
demux_program_t *prog = arg;
if(priv->pmt_cnt < 2)
return DEMUXER_CTRL_NOTIMPL;
if(prog->progid == -1)
{
int cur_pmt_idx = 0;
for(i = 0; i < priv->pmt_cnt; i++)
if(priv->pmt[i].progid == priv->prog)
{
cur_pmt_idx = i;
break;
}
i = (cur_pmt_idx + 1) % priv->pmt_cnt;
while(i != cur_pmt_idx)
{
pmt = &priv->pmt[i];
cnt = is_usable_program(priv, pmt);
if(cnt)
break;
i = (i + 1) % priv->pmt_cnt;
}
}
else
{
for(i = 0; i < priv->pmt_cnt; i++)
if(priv->pmt[i].progid == prog->progid)
{
pmt = &priv->pmt[i]; //required program
cnt = is_usable_program(priv, pmt);
}
}
if(!cnt)
return DEMUXER_CTRL_NOTIMPL;
//finally some food
prog->aid = prog->vid = -2; //no audio and no video by default
for(j = 0; j < pmt->es_cnt; j++)
{
if(priv->ts.pids[pmt->es[j].pid] == NULL || priv->ts.streams[pmt->es[j].pid].sh == NULL)
continue;
if(!vid_done && priv->ts.streams[pmt->es[j].pid].type == TYPE_VIDEO)
{
vid_done = 1;
prog->vid = pmt->es[j].pid;
}
else if(!aid_done && priv->ts.streams[pmt->es[j].pid].type == TYPE_AUDIO)
{
aid_done = 1;
prog->aid = pmt->es[j].pid;
}
}
priv->prog = prog->progid = pmt->progid;
return DEMUXER_CTRL_OK;
}
default:
return DEMUXER_CTRL_NOTIMPL;
}
}
const demuxer_desc_t demuxer_desc_mpeg_ts = {
"MPEG-TS demuxer",
"mpegts",
"TS",
"Nico Sabbi",
"",
DEMUXER_TYPE_MPEG_TS,
0, // unsafe autodetect
ts_check_file_dmx,
demux_ts_fill_buffer,
demux_open_ts,
demux_close_ts,
demux_seek_ts,
demux_ts_control
};
Reference in New Issue View Git Blame Copy Permalink