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-rw-r--r--demux/demux_mpg.c1306
1 files changed, 0 insertions, 1306 deletions
diff --git a/demux/demux_mpg.c b/demux/demux_mpg.c
deleted file mode 100644
index d47b3afd86..0000000000
--- a/demux/demux_mpg.c
+++ /dev/null
@@ -1,1306 +0,0 @@
-/*
- * MPG/VOB file parser for DEMUXER v2.5
- * copyright (c) 2001 by A'rpi/ESP-team
- *
- * 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 <unistd.h>
-#include <math.h>
-
-#include "config.h"
-#include "core/mp_msg.h"
-#include "core/options.h"
-
-#include "libavutil/attributes.h"
-#include "audio/decode/dec_audio.h"
-#include "stream/stream.h"
-#include "demux.h"
-#include "parse_es.h"
-#include "stheader.h"
-#include "mp3_hdr.h"
-
-//#define MAX_PS_PACKETSIZE 2048
-#define MAX_PS_PACKETSIZE (224*1024)
-
-#define UNKNOWN 0
-#define VIDEO_MPEG1 0x10000001
-#define VIDEO_MPEG2 0x10000002
-#define VIDEO_MPEG4 0x10000004
-#define VIDEO_H264 0x10000005
-#define AUDIO_MP2 0x50
-#define AUDIO_A52 0x2000
-#define AUDIO_LPCM_BE 0x10001
-#define AUDIO_AAC mmioFOURCC('M', 'P', '4', 'A')
-
-typedef struct mpg_demuxer {
- float last_pts;
- float first_pts; // first pts found in stream
- float first_to_final_pts_len; // difference between final pts and first pts
- int has_valid_timestamps; // !=0 iff time stamps look linear
- // (not necessarily starting with 0)
- unsigned int es_map[0x40]; //es map of stream types (associated to the pes id) from 0xb0 to 0xef
- int num_a_streams;
- int a_stream_ids[MAX_A_STREAMS];
-} mpg_demuxer_t;
-
-static int mpeg_pts_error=0;
-int64_t ps_probe = 0;
-
-static int parse_psm(demuxer_t *demux, int len) {
- unsigned char c, id, type;
- unsigned int plen, prog_len, es_map_len;
- mpg_demuxer_t *priv = (mpg_demuxer_t *) demux->priv;
-
- mp_dbg(MSGT_DEMUX,MSGL_V, "PARSE_PSM, len=%d\n", len);
- if(! len || len > 1018)
- return 0;
-
- c = stream_read_char(demux->stream);
- if(! (c & 0x80)) {
- stream_skip(demux->stream, len - 1); //not yet valid, discard
- return 0;
- }
- stream_skip(demux->stream, 1);
- prog_len = stream_read_word(demux->stream); //length of program descriptors
- stream_skip(demux->stream, prog_len); //.. that we ignore
- es_map_len = stream_read_word(demux->stream); //length of elementary streams map
- es_map_len = FFMIN(es_map_len, len - prog_len - 8); //sanity check
- while(es_map_len > 0) {
- type = stream_read_char(demux->stream);
- id = stream_read_char(demux->stream);
- if(id >= 0xB0 && id <= 0xEF && priv) {
- int idoffset = id - 0xB0;
- switch(type) {
- case 0x1:
- priv->es_map[idoffset] = VIDEO_MPEG1;
- break;
- case 0x2:
- priv->es_map[idoffset] = VIDEO_MPEG2;
- break;
- case 0x3:
- case 0x4:
- priv->es_map[idoffset] = AUDIO_MP2;
- break;
- case 0x0f:
- case 0x11:
- priv->es_map[idoffset] = AUDIO_AAC;
- break;
- case 0x10:
- priv->es_map[idoffset] = VIDEO_MPEG4;
- break;
- case 0x1b:
- priv->es_map[idoffset] = VIDEO_H264;
- break;
- case 0x81:
- priv->es_map[idoffset] = AUDIO_A52;
- break;
- }
- mp_dbg(MSGT_DEMUX,MSGL_V, "PSM ES, id=0x%x, type=%x, stype: %x\n", id, type, priv->es_map[idoffset]);
- }
- plen = stream_read_word(demux->stream); //length of elementary stream descriptors
- plen = FFMIN(plen, es_map_len); //sanity check
- stream_skip(demux->stream, plen); //skip descriptors for now
- es_map_len -= 4 + plen;
- }
- stream_skip(demux->stream, 4); //skip crc32
- return 1;
-}
-
-// 500000 is a wild guess
-#define TIMESTAMP_PROBE_LEN 500000
-
-//MAX_PTS_DIFF_FOR_CONSECUTIVE denotes the maximum difference
-//between two pts to consider them consecutive
-//1.0 is a wild guess
-#define MAX_PTS_DIFF_FOR_CONSECUTIVE 1.0
-
-//returns the first pts found within TIME_STAMP_PROBE_LEN bytes after stream_pos in demuxer's stream.
-//if no pts is found or an error occurs, -1.0 is returned.
-//Packs are freed.
-static float read_first_mpeg_pts_at_position(demuxer_t* demuxer, int64_t stream_pos)
-{
- stream_t *s = demuxer->stream;
- mpg_demuxer_t *mpg_d = demuxer->priv;
- float pts = -1.0; //the pts to return;
- float found_pts1; //the most recently found pts
- float found_pts2; //the pts found before found_pts1
- float found_pts3; //the pts found before found_pts2
- int found = 0;
-
- if(!mpg_d || stream_pos < 0)
- return pts;
-
- found_pts3 = found_pts2 = found_pts1 = mpg_d->last_pts;
- stream_seek(s, stream_pos);
-
- //We look for pts.
- //However, we do not stop at the first found one, as timestamps may reset
- //Therefore, we seek until we found three consecutive
- //pts within MAX_PTS_DIFF_FOR_CONSECUTIVE.
-
- while(found<3 && !s->eof
- && (fabsf(found_pts2-found_pts1) < MAX_PTS_DIFF_FOR_CONSECUTIVE)
- && (fabsf(found_pts3-found_pts2) < MAX_PTS_DIFF_FOR_CONSECUTIVE)
- && (stream_tell(s) < stream_pos + TIMESTAMP_PROBE_LEN)
- && ds_fill_buffer(demuxer->video))
- {
- if(mpg_d->last_pts != found_pts1)
- {
- if(!found)
- found_pts3 = found_pts2 = found_pts1 = mpg_d->last_pts; //the most recently found pts
- else
- {
- found_pts3 = found_pts2;
- found_pts2 = found_pts1;
- found_pts1 = mpg_d->last_pts;
- }
- found++;
- }
- }
-
- if(found == 3) pts = found_pts3;
-
- //clean up from searching of first pts;
- demux_flush(demuxer);
-
- return pts;
-}
-
-/// Open an mpg physical stream
-static demuxer_t* demux_mpg_open(demuxer_t* demuxer) {
- stream_t *s = demuxer->stream;
- mpg_demuxer_t* mpg_d;
-
- if (!ds_fill_buffer(demuxer->video)) return 0;
- mpg_d = calloc(1,sizeof(mpg_demuxer_t));
- if(mpg_d)
- {
- demuxer->priv = mpg_d;
- mpg_d->last_pts = -1.0;
- mpg_d->first_pts = -1.0;
-
- //if seeking is allowed set has_valid_timestamps if appropriate
- if(demuxer->seekable
- && (demuxer->stream->type == STREAMTYPE_FILE
- || demuxer->stream->type == STREAMTYPE_VCD)
- && demuxer->movi_start != demuxer-> movi_end
- )
- {
- //We seek to the beginning of the stream, to somewhere in the
- //middle, and to the end of the stream, while remembering the pts
- //at each of the three positions. With these pts, we check whether
- //or not the pts are "linear enough" to justify seeking by the pts
- //of the stream
-
- //The position where the stream is now
- int64_t pos = stream_tell(s);
- float first_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_start);
- if(first_pts != -1.0)
- {
- float middle_pts = read_first_mpeg_pts_at_position(demuxer, (demuxer->movi_end + demuxer->movi_start)/2);
- if(middle_pts != -1.0)
- {
- float final_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_end - TIMESTAMP_PROBE_LEN);
- if(final_pts != -1.0)
- {
- // found proper first, middle, and final pts.
- float proportion = (middle_pts-first_pts==0) ? -1 : (final_pts-middle_pts)/(middle_pts-first_pts);
- // if they are linear enough set has_valid_timestamps
- if((0.5 < proportion) && (proportion < 2))
- {
- mpg_d->first_pts = first_pts;
- mpg_d->first_to_final_pts_len = final_pts - first_pts;
- mpg_d->has_valid_timestamps = 1;
- }
- }
- }
- }
-
- //Cleaning up from seeking in stream
- demuxer->stream->eof=0;
- demuxer->video->eof=0;
- demuxer->audio->eof=0;
-
- stream_seek(s,pos);
- ds_fill_buffer(demuxer->video);
- } // if ( demuxer->seekable )
- } // if ( mpg_d )
- return demuxer;
-}
-
-static void demux_close_mpg(demuxer_t* demuxer) {
- mpg_demuxer_t* mpg_d = demuxer->priv;
- free(mpg_d);
-}
-
-
-static unsigned long long read_mpeg_timestamp(stream_t *s,int c){
- unsigned int d,e;
- unsigned long long pts;
- d=stream_read_word(s);
- e=stream_read_word(s);
- if( ((c&1)!=1) || ((d&1)!=1) || ((e&1)!=1) ){
- ++mpeg_pts_error;
- return 0; // invalid pts
- }
- pts=(((uint64_t)((c>>1)&7))<<30)|((d>>1)<<15)|(e>>1);
- mp_dbg(MSGT_DEMUX,MSGL_DBG3," pts {%llu}",pts);
- return pts;
-}
-
-static void new_audio_stream(demuxer_t *demux, int aid){
- if(!demux->a_streams[aid]){
- mpg_demuxer_t *mpg_d=(mpg_demuxer_t*)demux->priv;
- sh_audio_t* sh_a;
- new_sh_audio(demux,aid);
- sh_a = (sh_audio_t*)demux->a_streams[aid];
- sh_a->needs_parsing = 1;
- switch(aid & 0xE0){ // 1110 0000 b (high 3 bit: type low 5: id)
- case 0x00: sh_a->format=0x50;break; // mpeg
- case 0xA0: sh_a->format=0x10001;break; // dvd pcm
- case 0x80: if((aid & 0xF8) == 0x88) sh_a->format=0x2001;//dts
- else sh_a->format=0x2000;break; // ac3
- }
- //evo files
- if((aid & 0xC0) == 0xC0) sh_a->format=0x2000;
- else if(aid >= 0x98 && aid <= 0x9f) sh_a->format=0x2001;
- if (mpg_d) mpg_d->a_stream_ids[mpg_d->num_a_streams++] = aid;
- mp_set_audio_codec_from_tag(sh_a);
- }
- if(demux->audio->id==-1) demux->audio->id=aid;
-}
-
-static void dvdpcm_header(sh_audio_t *sh)
-{
- if (sh->format != 0x10001)
- return;
-
- WAVEFORMATEX *wf = calloc(sizeof(*wf), 1);
-
- if(sh->codecdata_len==3){
- // we have LPCM header:
- unsigned char h=sh->codecdata[1];
- wf->nChannels=1+(h&7);
- switch((h>>4)&3){
- case 0: wf->nSamplesPerSec=48000;break;
- case 1: wf->nSamplesPerSec=96000;break;
- case 2: wf->nSamplesPerSec=44100;break;
- case 3: wf->nSamplesPerSec=32000;break;
- }
- switch ((h >> 6) & 3) {
- case 0:
- wf->wBitsPerSample = 2 * 8;
- break;
- case 1:
- mp_tmsg(MSGT_DECAUDIO, MSGL_INFO, "Samples of this format are needed to improve support. Please contact the developers.\n");
- wf->nAvgBytesPerSec = wf->nChannels * wf->nSamplesPerSec * 5 / 2;
- case 2:
- wf->wBitsPerSample = 3 * 8;
- break;
- default:
- wf->wBitsPerSample = 2 * 8;
- }
- } else {
- // use defaults:
- wf->nChannels=2;
- wf->nSamplesPerSec=48000;
- wf->wBitsPerSample = 2 * 8;
- }
- if (!wf->nAvgBytesPerSec)
- wf->nAvgBytesPerSec = wf->wBitsPerSample / 8 * wf->nChannels * wf->nSamplesPerSec;
- if (wf->wBitsPerSample == 16)
- sh->format = 0x20776172; // 'raw ', pcm_s16be
- sh->wf = wf;
-}
-
-static int demux_mpg_read_packet(demuxer_t *demux,int id){
- int d av_unused;
- int len;
- int set_pts=0; // !=0 iff pts has been set to a proper value
- unsigned char c=0;
- unsigned long long pts=0;
- unsigned long long dts av_unused = 0;
- int l;
- int pes_ext2_subid=-1;
- double stream_pts = MP_NOPTS_VALUE;
- demux_stream_t *ds=NULL;
- demux_packet_t* dp;
- mpg_demuxer_t *priv = (mpg_demuxer_t *) demux->priv;
-
- mp_dbg(MSGT_DEMUX,MSGL_DBG3,"demux_read_packet: %X\n",id);
-
-// if(id==0x1F0){
-// demux->synced=0; // force resync after 0x1F0
-// return -1;
-//}
-
-// if(id==0x1BA) packet_start_pos=stream_tell(demux->stream);
- if((id<0x1BC || id>=0x1F0) && id != 0x1FD) return -1;
- if(id==0x1BE) return -1; // padding stream
- if(id==0x1BF) return -1; // private2
-
- len=stream_read_word(demux->stream);
- mp_dbg(MSGT_DEMUX,MSGL_DBG3,"PACKET len=%d",len);
-// if(len==62480){ demux->synced=0;return -1;} /* :) */
- if(len==0 || len>MAX_PS_PACKETSIZE){
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Invalid PS packet len: %d\n",len);
- return -2; // invalid packet !!!!!!
- }
-
- mpeg_pts_error=0;
-
- if(id==0x1BC) {
- parse_psm(demux, len);
- return 0;
- }
-
- while(len>0){ // Skip stuFFing bytes
- c=stream_read_char(demux->stream);
- --len;
- if(c!=0xFF)break;
- }
- if((c>>6)==1){ // Read (skip) STD scale & size value
-// printf(" STD_scale=%d",(c>>5)&1);
- d=((c&0x1F)<<8)|stream_read_char(demux->stream);
- len-=2;
-// printf(" STD_size=%d",d);
- c=stream_read_char(demux->stream);
- }
- // Read System-1 stream timestamps:
- if((c>>4)==2){
- pts=read_mpeg_timestamp(demux->stream,c);
- set_pts=1;
- len-=4;
- } else
- if((c>>4)==3){
- pts=read_mpeg_timestamp(demux->stream,c);
- c=stream_read_char(demux->stream);
- if((c>>4)!=1) pts=0; //printf("{ERROR4}");
- else set_pts = 1;
- dts=read_mpeg_timestamp(demux->stream,c);
- len-=4+1+4;
- } else
- if((c>>6)==2){
- int pts_flags;
- int hdrlen;
- int parse_ext2;
- // System-2 (.VOB) stream:
- c=stream_read_char(demux->stream);
- pts_flags=c>>6;
- parse_ext2 = (id == 0x1FD) && ((c & 0x3F) == 1);
- c=stream_read_char(demux->stream);
- hdrlen=c;
- len-=2;
- mp_dbg(MSGT_DEMUX,MSGL_DBG3," hdrlen=%d (len=%d)",hdrlen,len);
- if(hdrlen>len){ mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: invalid header length \n"); return -1;}
- if(pts_flags==2 && hdrlen>=5){
- c=stream_read_char(demux->stream);
- pts=read_mpeg_timestamp(demux->stream,c);
- set_pts=1;
- len-=5;hdrlen-=5;
- } else
- if(pts_flags==3 && hdrlen>=10){
- c=stream_read_char(demux->stream);
- pts=read_mpeg_timestamp(demux->stream,c);
- set_pts=1;
- c=stream_read_char(demux->stream);
- dts=read_mpeg_timestamp(demux->stream,c);
- len-=10;hdrlen-=10;
- }
- len-=hdrlen;
- if(parse_ext2 && hdrlen>=3) {
- c=stream_read_char(demux->stream);
- hdrlen--;
-
- if((c & 0x0F) != 0x0F) {
- mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: pes_extension_flag2 not set, discarding pes packet\n");
- return -1;
- }
- if(c & 0x80) { //pes_private_data_flag
- if(hdrlen<16) {
- mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough pes_private_data bytes: %d < 16, discarding pes packet\n", hdrlen);
- return -1;
- }
- stream_skip(demux->stream, 16);
- hdrlen-=16;
- }
- if(c & 0x40) { //pack_header_field_flag
- int l = stream_read_char(demux->stream);
- if(l < 0) //couldn't read from the stream?
- return -1;
- hdrlen--;
- if(l < 0 || hdrlen < l) {
- mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough pack_header bytes: hdrlen: %d < skip: %d, discarding pes packet\n",
- hdrlen, l);
- return -1;
- }
- stream_skip(demux->stream, l);
- hdrlen-=l;
- }
- if(c & 0x20) { //program_packet_sequence_counter_flag
- if(hdrlen < 2) {
- mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough program_packet bytes: hdrlen: %d, discarding pes packet\n", hdrlen);
- return -1;
- }
- stream_skip(demux->stream, 2);
- hdrlen-=2;
- }
- if(c & 0x10) {
- //STD
- stream_skip(demux->stream, 2);
- hdrlen-=2;
- }
- c=stream_read_char(demux->stream); //pes_extension2 flag
- hdrlen--;
- if(c!=0x81) { mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: unknown pes_extension2 format, len is > 1 \n"); return -1;}
- c=stream_read_char(demux->stream); //pes_extension2 payload === substream id
- hdrlen--;
- if(c<0x55 || c>0x5F) { mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: unknown vc1 substream_id: 0x%x \n", c); return -1;}
- pes_ext2_subid=c;
- }
- if(hdrlen>0)
- stream_skip(demux->stream,hdrlen); // skip header and stuffing bytes
-
- if(id==0x1FD && pes_ext2_subid!=-1) {
- //==== EVO VC1 STREAMS ===//
- if(!demux->v_streams[pes_ext2_subid]) new_sh_video(demux,pes_ext2_subid);
- if(demux->video->id==-1) demux->video->id=pes_ext2_subid;
- if(demux->video->id==pes_ext2_subid){
- ds=demux->video;
- if(!ds->sh) ds->sh=demux->v_streams[pes_ext2_subid];
- if(priv && ds->sh) {
- sh_video_t *sh = (sh_video_t *)ds->sh;
- sh->format = mmioFOURCC('W', 'V', 'C', '1');
- mp_set_video_codec_from_tag(sh);
- }
- }
- }
- //============== DVD Audio sub-stream ======================
- if(id==0x1BD){
- int aid, rawa52 = 0;
- int64_t tmppos;
- unsigned int tmp;
-
- tmppos = stream_tell(demux->stream);
- tmp = stream_read_word(demux->stream);
- stream_seek(demux->stream, tmppos);
- /// vdr stores A52 without the 4 header bytes, so we have to check this condition first
- if(tmp == 0x0B77) {
- aid = 128;
- rawa52 = 1;
- }
- else {
- aid=stream_read_char(demux->stream);--len;
- if(len<3) return -1; // invalid audio packet
- }
-
- // AID:
- // 0x20..0x3F subtitle
- // 0x80..0x87 and 0xC0..0xCF AC3 audio
- // 0x88..0x8F and 0x98..0x9F DTS audio
- // 0xA0..0xBF PCM audio
-
- if((aid & 0xE0) == 0x20){
- // subtitle:
- aid&=0x1F;
-
- if(!demux->s_streams[aid]){
- sh_sub_t *sh = new_sh_sub(demux, aid);
- if (sh) sh->gsh->codec = "dvd_subtitle_mpg";
- mp_msg(MSGT_DEMUX,MSGL_V,"==> Found subtitle: %d\n",aid);
- }
-
- if(demux->sub->id > -1)
- demux->sub->id &= 0x1F;
- if(!demux->opts->sub_lang && demux->sub->id == -1)
- demux->sub->id = aid;
- if(demux->sub->id==aid){
- ds=demux->sub;
- }
- } else if((aid >= 0x80 && aid <= 0x8F) || (aid >= 0x98 && aid <= 0xAF) || (aid >= 0xC0 && aid <= 0xCF)) {
-
-// aid=128+(aid&0x7F);
- // aid=0x80..0xBF
- new_audio_stream(demux, aid);
- if(demux->audio->id==aid){
- int type;
- ds=demux->audio;
- if(!ds->sh) ds->sh=demux->a_streams[aid];
- // READ Packet: Skip additional audio header data:
- if(!rawa52) {
- c=stream_read_char(demux->stream);//num of frames
- type=stream_read_char(demux->stream);//startpos hi
- type=(type<<8)|stream_read_char(demux->stream);//startpos lo
-// printf("\r[%02X][%04X]",c,type);
- len-=3;
- }
- if((aid&0xE0)==0xA0 && len>=3){
- unsigned char* hdr;
- // save audio header as codecdata!
- if(!((sh_audio_t*)(ds->sh))->codecdata_len){
- ((sh_audio_t*)(ds->sh))->codecdata=malloc(3);
- ((sh_audio_t*)(ds->sh))->codecdata_len=3;
- }
- hdr=((sh_audio_t*)(ds->sh))->codecdata;
- // read LPCM header:
- // emphasis[1], mute[1], rvd[1], frame number[5]:
- hdr[0]=stream_read_char(demux->stream);
-// printf(" [%01X:%02d]",c>>5,c&31);
- // quantization[2],freq[2],rvd[1],channels[3]
- hdr[1]=stream_read_char(demux->stream);
-// printf("[%01X:%01X] ",c>>4,c&15);
- // dynamic range control (0x80=off):
- hdr[2]=stream_read_char(demux->stream);
-// printf("[%02X] ",c);
- len-=3;
- if(len<=0) mp_msg(MSGT_DEMUX,MSGL_V,"End of packet while searching for PCM header\n");
- dvdpcm_header((sh_audio_t*)(ds->sh));
- mp_set_audio_codec_from_tag((sh_audio_t*)(ds->sh));
- }
-// printf(" \n");
- } // if(demux->audio->id==aid)
-
- } else mp_msg(MSGT_DEMUX,MSGL_V,"Unknown 0x1BD substream: 0x%02X \n",aid);
- } //if(id==0x1BD)
- } else {
- if(c!=0x0f){
- mp_msg(MSGT_DEMUX,MSGL_V," {ERROR5,c=%d} \n",c);
- return -1; // invalid packet !!!!!!
- }
- }
- if(mpeg_pts_error) mp_msg(MSGT_DEMUX,MSGL_V," {PTS_err:%d} \n",mpeg_pts_error);
- mp_dbg(MSGT_DEMUX,MSGL_DBG3," => len=%d\n",len);
-
-// if(len<=0 || len>MAX_PS_PACKETSIZE) return -1; // Invalid packet size
- if(len<=0 || len>MAX_PS_PACKETSIZE){
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Invalid PS data len: %d\n",len);
- return -1; // invalid packet !!!!!!
- }
-
- if(id>=0x1C0 && id<=0x1DF){
- // mpeg audio
- int aid=id-0x1C0;
- new_audio_stream(demux, aid);
- if(demux->audio->id==aid){
- ds=demux->audio;
- if(!ds->sh) ds->sh=demux->a_streams[aid];
- if(priv && ds->sh) {
- sh_audio_t *sh = (sh_audio_t *)ds->sh;
- if(priv->es_map[id - 0x1B0])
- sh->format = priv->es_map[id - 0x1B0];
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"ASSIGNED TO STREAM %d CODEC %x\n", id, priv->es_map[id - 0x1B0]);
- dvdpcm_header(sh);
- mp_set_audio_codec_from_tag(sh);
- }
- }
- } else
- if(id>=0x1E0 && id<=0x1EF){
- // mpeg video
- int aid=id-0x1E0;
- if(!demux->v_streams[aid]) new_sh_video(demux,aid);
- if(demux->video->id==-1) demux->video->id=aid;
- if(demux->video->id==aid){
- ds=demux->video;
- if(!ds->sh) ds->sh=demux->v_streams[aid];
- if(priv && ds->sh) {
- sh_video_t *sh = (sh_video_t *)ds->sh;
- if(priv->es_map[id - 0x1B0]) {
- sh->format = priv->es_map[id - 0x1B0];
- mp_set_video_codec_from_tag(sh);
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"ASSIGNED TO STREAM %d CODEC %x\n", id, priv->es_map[id - 0x1B0]);
- }
- }
- }
- }
-
- if(ds){
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_MPG: Read %d data bytes from packet %04X\n",len,id);
-// printf("packet start = 0x%X \n",stream_tell(demux->stream)-packet_start_pos);
-
- dp=new_demux_packet(len);
- if(!dp) {
- mp_dbg(MSGT_DEMUX,MSGL_ERR,"DEMUX_MPG ERROR: couldn't create demux_packet(%d bytes)\n",len);
- stream_skip(demux->stream,len);
- return 0;
- }
- l = stream_read(demux->stream,dp->buffer,len);
- if(l<len)
- resize_demux_packet(dp, l);
- len = l;
- if(set_pts)
- dp->pts=pts/90000.0f;
- dp->pos=demux->filepos;
- /*
- workaround:
- set dp->stream_pts only when feeding the video stream, or strangely interleaved files
- (such as SWIII) will show strange alternations in the stream time, wildly going
- back and forth
- */
- if(ds == demux->video && stream_control(demux->stream, STREAM_CTRL_GET_CURRENT_TIME,(void *)&stream_pts)!=STREAM_UNSUPPORTED)
- dp->stream_pts = stream_pts;
- ds_add_packet(ds,dp);
- if (demux->priv && set_pts) ((mpg_demuxer_t*)demux->priv)->last_pts = pts/90000.0f;
-// if(ds==demux->sub) parse_dvdsub(ds->last->buffer,ds->last->len);
- return 1;
- }
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_MPG: Skipping %d data bytes from packet %04X\n",len,id);
- if(len<=2356) stream_skip(demux->stream,len);
- return 0;
-}
-
-static int num_elementary_packets100=0;
-static int num_elementary_packets101=0;
-static int num_elementary_packets12x=0;
-static int num_elementary_packets1B6=0;
-static int num_elementary_packetsPES=0;
-static int num_mpeg12_startcode=0;
-static int num_h264_slice=0; //combined slice
-static int num_h264_dpa=0; //DPA Slice
-static int num_h264_dpb=0; //DPB Slice
-static int num_h264_dpc=0; //DPC Slice
-static int num_h264_idr=0; //IDR Slice
-static int num_h264_sps=0;
-static int num_h264_pps=0;
-
-static int num_mp3audio_packets=0;
-
-static void clear_stats(void)
-{
- num_elementary_packets100=0;
- num_elementary_packets101=0;
- num_elementary_packets1B6=0;
- num_elementary_packets12x=0;
- num_elementary_packetsPES=0;
- num_mpeg12_startcode=0;
- num_h264_slice=0; //combined slice
- num_h264_dpa=0; //DPA Slice
- num_h264_dpb=0; //DPB Slice
- num_h264_dpc=0; //DPC Slice
- num_h264_idr=0; //IDR Slice
- num_h264_sps=0;
- num_h264_pps=0;
- num_mp3audio_packets=0;
-}
-
-//assumes demuxer->synced < 2
-static inline void update_stats(int head)
-{
- if(head==0x1B6) ++num_elementary_packets1B6;
- else if(head==0x1B3 || head==0x1B8) ++num_mpeg12_startcode;
- else if(head==0x100) ++num_elementary_packets100;
- else if(head==0x101) ++num_elementary_packets101;
- else if(head==0x1BD || (0x1C0<=head && head<=0x1EF))
- num_elementary_packetsPES++;
- else if(head>=0x120 && head<=0x12F) ++num_elementary_packets12x;
- if(head>=0x100 && head<0x1B0)
- {
- if((head&~0x60) == 0x101) ++num_h264_slice;
- else if((head&~0x60) == 0x102) ++num_h264_dpa;
- else if((head&~0x60) == 0x103) ++num_h264_dpb;
- else if((head&~0x60) == 0x104) ++num_h264_dpc;
- else if((head&~0x60) == 0x105 && head != 0x105) ++num_h264_idr;
- else if((head&~0x60) == 0x107 && head != 0x107) ++num_h264_sps;
- else if((head&~0x60) == 0x108 && head != 0x108) ++num_h264_pps;
- }
-}
-
-static int demux_mpg_probe(demuxer_t *demuxer) {
- int pes av_unused = 1;
- int tmp;
- int64_t tmppos;
- int file_format = DEMUXER_TYPE_UNKNOWN;
-
- tmppos=stream_tell(demuxer->stream);
- tmp=stream_read_dword(demuxer->stream);
- if(tmp==0x1E0 || tmp==0x1C0) {
- tmp=stream_read_word(demuxer->stream);
- if(tmp>1 && tmp<=2048) pes=0; // demuxer->synced=3; // PES...
- }
- stream_seek(demuxer->stream,tmppos);
-
- clear_stats();
-
- if(demux_mpg_open(demuxer))
- file_format=DEMUXER_TYPE_MPEG_PS;
- else {
- mp_msg(MSGT_DEMUX,MSGL_V,"MPEG packet stats: p100: %d p101: %d p1B6: %d p12x: %d sli: %d a: %d b: %d c: %d idr: %d sps: %d pps: %d PES: %d MP3: %d, synced: %d\n",
- num_elementary_packets100,num_elementary_packets101,
- num_elementary_packets1B6,num_elementary_packets12x,
- num_h264_slice, num_h264_dpa,
- num_h264_dpb, num_h264_dpc=0,
- num_h264_idr, num_h264_sps=0,
- num_h264_pps,
- num_elementary_packetsPES,num_mp3audio_packets, demuxer->synced);
-
- //MPEG packet stats: p100: 458 p101: 458 PES: 0 MP3: 1103 (.m2v)
- if(num_mp3audio_packets>50 && num_mp3audio_packets>2*num_elementary_packets100
- && abs(num_elementary_packets100-num_elementary_packets101)>2)
- return file_format;
-
- // some hack to get meaningfull error messages to our unhappy users:
- if(num_mpeg12_startcode>=2 && num_elementary_packets100>=2 && num_elementary_packets101>=2 &&
- abs(num_elementary_packets101+8-num_elementary_packets100)<16) {
- if(num_elementary_packetsPES>=4 && num_elementary_packetsPES>=num_elementary_packets100-4) {
- return file_format;
- }
- file_format=DEMUXER_TYPE_MPEG_ES; // <-- hack is here :)
- } else
- // fuzzy mpeg4-es detection. do NOT enable without heavy testing of mpeg formats detection!
- if(num_elementary_packets1B6>3 && num_elementary_packets12x>=1 &&
- num_elementary_packetsPES==0 && num_elementary_packets100<=num_elementary_packets12x &&
- demuxer->synced<2) {
- file_format=DEMUXER_TYPE_MPEG4_ES;
- } else
- // fuzzy h264-es detection. do NOT enable without heavy testing of mpeg formats detection!
- if((num_h264_slice>3 || (num_h264_dpa>3 && num_h264_dpb>3 && num_h264_dpc>3)) &&
- /* FIXME num_h264_sps>=1 && */ num_h264_pps>=1 && num_h264_idr>=1 &&
- num_elementary_packets1B6==0 && num_elementary_packetsPES==0 &&
- demuxer->synced<2) {
- file_format=DEMUXER_TYPE_H264_ES;
- } else
- {
- if(demuxer->synced==2)
- mp_msg(MSGT_DEMUXER, MSGL_ERR, "MPEG: %s",
- mp_gtext("Missing video stream!? Contact the author, it may be a bug :(\n"));
- else
- mp_tmsg(MSGT_DEMUXER,MSGL_V,"Not MPEG System Stream format... (maybe Transport Stream?)\n");
- }
- }
- //FIXME this shouldn't be necessary
- stream_seek(demuxer->stream,tmppos);
- return file_format;
-}
-
-static int demux_mpg_es_fill_buffer(demuxer_t *demux, demux_stream_t *ds){
- // Elementary video stream
- if(demux->stream->eof) return 0;
- demux->filepos=stream_tell(demux->stream);
- ds_read_packet(demux->video,demux->stream,STREAM_BUFFER_SIZE,0,demux->filepos,0);
- return 1;
-}
-
-/**
- * \brief discard until 0x100 header and return a filled buffer
- * \param b buffer-end pointer
- * \param pos current pos in stream, negative since b points to end of buffer
- * \param s stream to read from
- * \return new position, differs from original pos when eof hit and thus
- * b was modified to point to the new end of buffer
- */
-static int find_end(unsigned char **b, int pos, stream_t *s) {
- register int state = 0xffffffff;
- unsigned char *buf = *b;
- int start = pos;
- int read, unused;
- // search already read part
- while (state != 0x100 && pos) {
- state = state << 8 | buf[pos++];
- }
- // continue search in stream
- while (state != 0x100) {
- register int c = stream_read_char(s);
- if (c < 0) break;
- state = state << 8 | c;
- }
- // modify previous header (from 0x1bc or 0x1bf to 0x100)
- buf[start++] = 0;
- // copy remaining buffer part to current pos
- memmove(&buf[start], &buf[pos], -pos);
- unused = start + -pos; // -unused bytes in buffer
- read = stream_read(s, &buf[unused], -unused);
- unused += read;
- // fix buffer so it ends at pos == 0 (eof case)
- *b = &buf[unused];
- start -= unused;
- return start;
-}
-
-/**
- * This format usually uses an insane bitrate, which makes this function
- * performance-critical!
- * Be sure to benchmark any changes with different compiler versions.
- */
-static int demux_mpg_gxf_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
- demux_packet_t *pack;
- int len;
- demux->filepos = stream_tell(demux->stream);
- pack = new_demux_packet(STREAM_BUFFER_SIZE);
- len = stream_read(demux->stream, pack->buffer, STREAM_BUFFER_SIZE);
- if (len <= 0)
- {
- free_demux_packet(pack);
- return 0;
- }
- {
- register uint32_t state = (uint32_t)(uintptr_t)demux->priv;
- register int pos = -len;
- unsigned char *buf = &pack->buffer[len];
- do {
- state = state << 8 | buf[pos];
- if (unlikely((state | 3) == 0x1bf))
- pos = find_end(&buf, pos, demux->stream);
- } while (++pos < 0);
- demux->priv = (void *)(uintptr_t)state;
- len = buf - pack->buffer;
- }
- if (len < STREAM_BUFFER_SIZE)
- resize_demux_packet(pack, len);
- ds_add_packet(ds, pack);
- return 1;
-}
-
-static int demux_mpg_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
-{
-unsigned int head=0;
-int skipped=0;
-int max_packs=256; // 512kbyte
-int ret=0;
-
-// System stream
-do{
- demux->filepos=stream_tell(demux->stream);
- //lame workaround: this is needed to show the progress bar when playing dvdnav://
- //(ths poor guy doesn't know teh length of the stream at startup)
- demux->movi_end = demux->stream->end_pos;
- head=stream_read_dword(demux->stream);
- if((head&0xFFFFFF00)!=0x100){
- // sync...
- demux->filepos-=skipped;
- while(1){
- int c=stream_read_char(demux->stream);
- if(c<0) break; //EOF
- head<<=8;
- if(head!=0x100){
- head|=c;
- if(mp_check_mp3_header(head)) ++num_mp3audio_packets;
- ++skipped; //++demux->filepos;
- continue;
- }
- head|=c;
- break;
- }
- demux->filepos+=skipped;
- }
- if(stream_eof(demux->stream)) break;
- // sure: head=0x000001XX
- mp_dbg(MSGT_DEMUX,MSGL_DBG4,"*** head=0x%X\n",head);
- if(demux->synced==0){
- if(head==0x1BA) demux->synced=1; //else
-// if(head==0x1BD || (head>=0x1C0 && head<=0x1EF)) demux->synced=3; // PES?
- } else
- if(demux->synced==1){
- if(head==0x1BB || head==0x1BD || (head>=0x1C0 && head<=0x1EF)){
- demux->synced=2;
- mp_msg(MSGT_DEMUX,MSGL_V,"system stream synced at 0x%"PRIX64" (%"PRId64")!\n",(int64_t)demux->filepos,(int64_t)demux->filepos);
- num_elementary_packets100=0; // requires for re-sync!
- num_elementary_packets101=0; // requires for re-sync!
- } else demux->synced=0;
- } // else
- if(demux->synced>=2){
- ret=demux_mpg_read_packet(demux,head);
- if(!ret)
- if(--max_packs==0){
- demux->stream->eof=1;
- mp_tmsg(MSGT_DEMUX,MSGL_ERR,"demux: File doesn't contain the selected audio or video stream.\n");
- return 0;
- }
- if(demux->synced==3) demux->synced=(ret==1)?2:0; // PES detect
- } else {
- update_stats(head);
- if(head>=0x100 && head<0x1B0)
- mp_msg(MSGT_DEMUX,MSGL_DBG3,"Opps... elementary video packet found: %03X\n",head);
- else if((head>=0x1C0 && head<0x1F0) || head==0x1BD)
- mp_msg(MSGT_DEMUX,MSGL_DBG3,"Opps... PES packet found: %03X\n",head);
-
- if(((num_elementary_packets100>50 && num_elementary_packets101>50) ||
- (num_elementary_packetsPES>50)) && skipped>4000000){
- mp_msg(MSGT_DEMUX,MSGL_V,"sync_mpeg_ps: seems to be ES/PES stream...\n");
- demux->stream->eof=1;
- break;
- }
- if(num_mp3audio_packets>100 && num_elementary_packets100<10){
- mp_msg(MSGT_DEMUX,MSGL_V,"sync_mpeg_ps: seems to be MP3 stream...\n");
- demux->stream->eof=1;
- break;
- }
- }
-} while(ret!=1);
- mp_dbg(MSGT_DEMUX,MSGL_DBG2,"demux: %d bad bytes skipped\n",skipped);
- if(demux->stream->eof){
- mp_msg(MSGT_DEMUX,MSGL_V,"MPEG Stream reached EOF\n");
- return 0;
- }
- return 1;
-}
-
-static void demux_seek_mpg(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;
- mpg_demuxer_t *mpg_d=(mpg_demuxer_t*)demuxer->priv;
- int precision = 1;
- float oldpts = 0;
- int64_t oldpos = demuxer->filepos;
- float newpts = 0;
- int64_t newpos = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : oldpos;
-
- if(mpg_d)
- oldpts = mpg_d->last_pts;
- newpts = (flags & SEEK_ABSOLUTE) ? 0.0 : oldpts;
- //================= seek in MPEG ==========================
- //calculate the pts to seek to
- if(flags & SEEK_FACTOR) {
- if (mpg_d && mpg_d->first_to_final_pts_len > 0.0)
- newpts += mpg_d->first_to_final_pts_len * rel_seek_secs;
- else
- newpts += rel_seek_secs * (demuxer->movi_end - demuxer->movi_start) * oldpts / oldpos;
- } else
- newpts += rel_seek_secs;
- if (newpts < 0) newpts = 0;
-
- if(flags&SEEK_FACTOR){
- // float seek 0..1
- newpos+=(demuxer->movi_end-demuxer->movi_start)*rel_seek_secs;