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mpv/libmpdemux/demux_ogg.c
rfelker ebfa939727 1000000000000l to bunkus 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12266 b3059339-0415-0410-9bf9-f77b7e298cf2
2004-04-23 22:30:18 +00:00

1387 lines
42 KiB
C
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#include "config.h"
#ifdef HAVE_OGGVORBIS
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "../mp_msg.h"
#include "../help_mp.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#ifdef TREMOR
#include <tremor/ogg.h>
#include <tremor/ivorbiscodec.h>
#else
#include <ogg/ogg.h>
#include <vorbis/codec.h>
#endif
#ifdef HAVE_OGGTHEORA
#include <theora/theora.h>
#endif
#define BLOCK_SIZE 4096
/// Vorbis decoder context : we need the vorbis_info for vorbis timestamping
/// Shall we put this struct def in a common header ?
typedef struct ov_struct_st {
vorbis_info vi; /* struct that stores all the static vorbis bitstream
settings */
vorbis_comment vc; /* struct that stores all the bitstream user comments */
vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
vorbis_block vb; /* local working space for packet->PCM decode */
float rg_scale; /* replaygain scale */
#ifdef TREMOR
int rg_scale_int;
#endif
} ov_struct_t;
/* Theora decoder context : we won't be able to interpret granule positions
* without using theora_granule_time with the theora_state of the stream.
* This is duplicated in `vd_theora.c'; put this in a common header?
*/
#ifdef HAVE_OGGTHEORA
typedef struct theora_struct_st {
theora_state st;
theora_comment cc;
theora_info inf;
} theora_struct_t;
#endif
//// OggDS headers
// Header for the new header format
typedef struct stream_header_video
{
ogg_int32_t width;
ogg_int32_t height;
} stream_header_video;
typedef struct stream_header_audio
{
ogg_int16_t channels;
ogg_int16_t blockalign;
ogg_int32_t avgbytespersec;
} stream_header_audio;
typedef struct stream_header
{
char streamtype[8];
char subtype[4];
ogg_int32_t size; // size of the structure
ogg_int64_t time_unit; // in reference time
ogg_int64_t samples_per_unit;
ogg_int32_t default_len; // in media time
ogg_int32_t buffersize;
ogg_int16_t bits_per_sample;
union
{
// Video specific
stream_header_video video;
// Audio specific
stream_header_audio audio;
} sh;
} stream_header;
/// Our private datas
typedef struct ogg_syncpoint {
int64_t granulepos;
off_t page_pos;
} ogg_syncpoint_t;
/// A logical stream
typedef struct ogg_stream {
/// Timestamping stuff
float samplerate; /// granulpos 2 time
int64_t lastpos;
int32_t lastsize;
// Logical stream state
ogg_stream_state stream;
int hdr_packets;
int vorbis;
int theora;
int flac;
int text;
} ogg_stream_t;
typedef struct ogg_demuxer {
/// Physical stream state
ogg_sync_state sync;
/// Current page
ogg_page page;
/// Logical streams
ogg_stream_t *subs;
int num_sub;
ogg_syncpoint_t* syncpoints;
int num_syncpoint;
off_t pos, last_size;
int64_t final_granulepos;
} ogg_demuxer_t;
#define NUM_VORBIS_HDR_PACKETS 3
/// Some defines from OggDS
#define PACKET_TYPE_HEADER 0x01
#define PACKET_TYPE_BITS 0x07
#define PACKET_LEN_BITS01 0xc0
#define PACKET_LEN_BITS2 0x02
#define PACKET_IS_SYNCPOINT 0x08
extern int index_mode;
extern char *dvdsub_lang, *audio_lang;
//-------- subtitle support - should be moved to decoder layer, and queue
// - subtitles up in demuxer buffer...
#include "../subreader.h"
#include "../libvo/sub.h"
#define OGG_SUB_MAX_LINE 128
static subtitle ogg_sub;
extern subtitle* vo_sub;
static float clear_sub;
//FILE* subout;
static
uint16_t get_uint16 (const void *buf)
{
uint16_t ret;
unsigned char *tmp;
tmp = (unsigned char *) buf;
ret = tmp[1] & 0xff;
ret = (ret << 8) + (tmp[0] & 0xff);
return (ret);
}
static
uint32_t get_uint32 (const void *buf)
{
uint32_t ret;
unsigned char *tmp;
tmp = (unsigned char *) buf;
ret = tmp[3] & 0xff;
ret = (ret << 8) + (tmp[2] & 0xff);
ret = (ret << 8) + (tmp[1] & 0xff);
ret = (ret << 8) + (tmp[0] & 0xff);
return (ret);
}
static
uint64_t get_uint64 (const void *buf)
{
uint64_t ret;
unsigned char *tmp;
tmp = (unsigned char *) buf;
ret = tmp[7] & 0xff;
ret = (ret << 8) + (tmp[6] & 0xff);
ret = (ret << 8) + (tmp[5] & 0xff);
ret = (ret << 8) + (tmp[4] & 0xff);
ret = (ret << 8) + (tmp[3] & 0xff);
ret = (ret << 8) + (tmp[2] & 0xff);
ret = (ret << 8) + (tmp[1] & 0xff);
ret = (ret << 8) + (tmp[0] & 0xff);
return (ret);
}
void demux_ogg_init_sub () {
int lcv;
if(!ogg_sub.text[0]) // not yet allocated
for (lcv = 0; lcv < SUB_MAX_TEXT; lcv++) {
ogg_sub.text[lcv] = (char*)malloc(OGG_SUB_MAX_LINE);
}
}
void demux_ogg_add_sub (ogg_stream_t* os,ogg_packet* pack) {
int lcv;
int line_pos = 0;
int ignoring = 0;
char *packet = pack->packet;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"\ndemux_ogg_add_sub %02X %02X %02X '%s'\n",
(unsigned char)packet[0],
(unsigned char)packet[1],
(unsigned char)packet[2],
&packet[3]);
ogg_sub.lines = 0;
if (((unsigned char)packet[0]) == 0x88) { // some subtitle text
// Find data start
int32_t duration = 0;
int16_t hdrlen = (*packet & PACKET_LEN_BITS01)>>6, i;
hdrlen |= (*packet & PACKET_LEN_BITS2) <<1;
lcv = 1 + hdrlen;
for (i = hdrlen; i > 0; i--) {
duration <<= 8;
duration |= (unsigned char)packet[i];
}
if ((hdrlen > 0) && (duration > 0)) {
float pts;
if(pack->granulepos == -1)
pack->granulepos = os->lastpos + os->lastsize;
pts = (float)pack->granulepos/(float)os->samplerate;
clear_sub = 1.0 + pts + (float)duration/1000.0;
}
while (1) {
int c = packet[lcv++];
if(c=='\n' || c==0 || line_pos >= OGG_SUB_MAX_LINE-1){
ogg_sub.text[ogg_sub.lines][line_pos] = 0; // close sub
if(line_pos) ogg_sub.lines++;
if(!c || ogg_sub.lines>=SUB_MAX_TEXT) break; // EOL or TooMany
line_pos = 0;
}
switch (c) {
case '\r':
case '\n': // just ignore linefeeds for now
// their placement seems rather haphazard
break;
case '<': // some html markup, ignore for now
ignoring = 1;
break;
case '>':
ignoring = 0;
break;
default:
if(!ignoring)
ogg_sub.text[ogg_sub.lines][line_pos++] = c;
break;
}
}
}
mp_msg(MSGT_DEMUX,MSGL_DBG2,"ogg sub lines: %d first: '%s'\n",
ogg_sub.lines, ogg_sub.text[0]);
#ifdef USE_ICONV
subcp_recode1(&ogg_sub);
#endif
vo_sub = &ogg_sub;
vo_osd_changed(OSDTYPE_SUBTITLE);
}
// get the logical stream of the current page
// fill os if non NULL and return the stream id
static int demux_ogg_get_page_stream(ogg_demuxer_t* ogg_d,ogg_stream_state** os) {
int id,s_no;
ogg_page* page = &ogg_d->page;
s_no = ogg_page_serialno(page);
for(id= 0; id < ogg_d->num_sub ; id++) {
if(s_no == ogg_d->subs[id].stream.serialno)
break;
}
if(id == ogg_d->num_sub) {
// If we have only one vorbis stream allow the stream id to change
// it's normal on radio stream (each song have an different id).
// But we (or the codec?) should check that the samplerate, etc
// doesn't change (for radio stream it's ok)
if(ogg_d->num_sub == 1 && ogg_d->subs[0].vorbis) {
ogg_stream_reset(&ogg_d->subs[0].stream);
ogg_stream_init(&ogg_d->subs[0].stream,s_no);
id = 0;
} else
return -1;
}
if(os)
*os = &ogg_d->subs[id].stream;
return id;
}
static unsigned char* demux_ogg_read_packet(ogg_stream_t* os,ogg_packet* pack,void *context,float* pts,int* flags) {
unsigned char* data;
*pts = 0;
*flags = 0;
if(os->vorbis) {
data = pack->packet;
if(*pack->packet & PACKET_TYPE_HEADER)
os->hdr_packets++;
else if (context )
{
vorbis_info *vi = &((ov_struct_t*)context)->vi;
// When we dump the audio, there is no vi, but we don't care of timestamp in this case
int32_t blocksize = vorbis_packet_blocksize(vi,pack) / vi->channels;
// Calculate the timestamp if the packet don't have any
if(pack->granulepos == -1) {
pack->granulepos = os->lastpos;
if(os->lastsize > 0)
pack->granulepos += os->lastsize;
}
*pts = pack->granulepos / (float)vi->rate;
os->lastsize = blocksize;
os->lastpos = pack->granulepos;
}
# ifdef HAVE_OGGTHEORA
} else if (os->theora) {
/* we pass complete packets to theora, mustn't strip the header! */
data = pack->packet;
os->lastsize = 1;
/* header packets beginn on 1-bit: thus check (*data&0x80). We don't
have theora_state st, until all header packets were passed to the
decoder. */
if (context != NULL && !(*data&0x80))
{
theora_info *thi = ((theora_struct_t*)context)->st.i;
int keyframe_granule_shift=_ilog(thi->keyframe_frequency_force-1);
int64_t iframemask = (1 << keyframe_granule_shift) - 1;
if (pack->granulepos >= 0)
{
os->lastpos = pack->granulepos >> keyframe_granule_shift;
os->lastpos += pack->granulepos & iframemask;
*flags = ((pack->granulepos & iframemask) == 0);
}
else
{
os->lastpos++;
}
pack->granulepos = os->lastpos;
*pts = (double)os->lastpos / (double)os->samplerate;
}
#endif /* HAVE_OGGTHEORA */
# ifdef HAVE_FLAC
} else if (os->flac) {
/* we pass complete packets to flac, mustn't strip the header! */
data = pack->packet;
#endif /* HAVE_FLAC */
} else {
if(*pack->packet & PACKET_TYPE_HEADER)
os->hdr_packets++;
else {
// Find data start
int16_t hdrlen = (*pack->packet & PACKET_LEN_BITS01)>>6;
hdrlen |= (*pack->packet & PACKET_LEN_BITS2) <<1;
data = pack->packet + 1 + hdrlen;
// Calculate the timestamp
if(pack->granulepos == -1)
pack->granulepos = os->lastpos + (os->lastsize ? os->lastsize : 1);
// If we alredy have a timestamp it can be a syncpoint
if(*pack->packet & PACKET_IS_SYNCPOINT)
*flags = 1;
*pts = pack->granulepos/os->samplerate;
// Save the packet length and timestamp
os->lastsize = 0;
while(hdrlen) {
os->lastsize <<= 8;
os->lastsize |= pack->packet[hdrlen];
hdrlen--;
}
os->lastpos = pack->granulepos;
}
}
return data;
}
// check if clang has substring from comma separated langlist
static int demux_ogg_check_lang(char *clang, char *langlist)
{
char *c;
if (!langlist || !*langlist)
return 0;
while ((c = strchr(langlist, ',')))
{
if (!strncasecmp(clang, langlist, c - langlist))
return 1;
langlist = &c[1];
}
if (!strncasecmp(clang, langlist, strlen(langlist)))
return 1;
return 0;
}
/// Try to print out comments and also check for LANGUAGE= tag
static void demux_ogg_check_comments(demuxer_t *d, ogg_stream_t *os, int id, vorbis_comment *vc)
{
char *hdr, *val;
char **cmt = vc->user_comments;
while(*cmt)
{
hdr = NULL;
if (!strncasecmp(*cmt, "ENCODED_USING=", 14))
{
hdr = "Software";
val = *cmt + 14;
}
else if (!strncasecmp(*cmt, "LANGUAGE=", 9))
{
val = *cmt + 9;
// check for -slang if subs are uninitialized yet
if (os->text && d->sub->id == -1 && demux_ogg_check_lang(val, dvdsub_lang))
{
d->sub->id = id;
mp_msg(MSGT_DEMUX, MSGL_V, "Stream language matched -slang: %s\n", val);
}
else
hdr = "Language";
}
else if (!strncasecmp(*cmt, "ENCODER_URL=", 12))
{
hdr = "Encoder URL";
val = *cmt + 12;
}
else if (!strncasecmp(*cmt, "TITLE=", 6))
{
hdr = "Name";
val = *cmt + 6;
}
if (hdr)
mp_msg(MSGT_DEMUX, MSGL_V, " %s: %s\n", hdr, val);
cmt++;
}
}
/// Calculate the timestamp and add the packet to the demux stream
// return 1 if the packet was added, 0 otherwise
static int demux_ogg_add_packet(demux_stream_t* ds,ogg_stream_t* os,int id,ogg_packet* pack) {
demuxer_t* d = ds->demuxer;
demux_packet_t* dp;
unsigned char* data;
float pts = 0;
int flags = 0;
void *context = NULL;
// If packet is an comment header then we try to get comments at first
if (pack->bytes >= 7 && !memcmp(pack->packet, "\003vorbis", 7))
{
vorbis_info vi;
vorbis_comment vc;
vorbis_info_init(&vi);
vorbis_comment_init(&vc);
vi.rate = 1L; // it's checked by vorbis_synthesis_headerin()
if(vorbis_synthesis_headerin(&vi, &vc, pack) == 0) // if no errors
demux_ogg_check_comments(d, os, id, &vc);
vorbis_comment_clear(&vc);
vorbis_info_clear(&vi);
}
if (os->text) {
if (id == d->sub->id) // don't want to add subtitles to the demuxer for now
demux_ogg_add_sub(os,pack);
return 0;
}
// If packet is an header we jump it except for vorbis and theora
// (PACKET_TYPE_HEADER bit doesn't even exist for theora ?!)
// We jump nothing for FLAC. Ain't this great? Packet contents have to be
// handled differently for each and every stream type. The joy! The joy!
if(!os->flac && ((*pack->packet & PACKET_TYPE_HEADER) &&
(ds != d->audio || ( ((sh_audio_t*)ds->sh)->format != 0xFFFE || os->hdr_packets >= NUM_VORBIS_HDR_PACKETS ) ) &&
(ds != d->video || (((sh_video_t*)ds->sh)->format != 0xFFFC))))
return 0;
// For vorbis packet the packet is the data, for other codec we must jump
// the header
if(ds == d->audio && ((sh_audio_t*)ds->sh)->format == 0xFFFE)
context = ((sh_audio_t *)ds->sh)->context;
if (ds == d->video && ((sh_audio_t*)ds->sh)->format == 0xFFFC)
context = ((sh_video_t *)ds->sh)->context;
data = demux_ogg_read_packet(os,pack,context,&pts,&flags);
if(d->video->id < 0)
((sh_audio_t*)ds->sh)->delay = pts;
/// Clear subtitles if necessary (for broken files)
if ((clear_sub > 0) && (pts >= clear_sub)) {
ogg_sub.lines = 0;
vo_sub = &ogg_sub;
vo_osd_changed(OSDTYPE_SUBTITLE);
clear_sub = -1;
}
/// Send the packet
dp = new_demux_packet(pack->bytes-(data-pack->packet));
memcpy(dp->buffer,data,pack->bytes-(data-pack->packet));
dp->pts = pts;
dp->flags = flags;
ds_add_packet(ds,dp);
mp_msg(MSGT_DEMUX,MSGL_DBG2,"New dp: %p ds=%p pts=%5.3f len=%d flag=%d \n",
dp, ds, pts, dp->len, flags);
return 1;
}
/// if -forceidx build a table of all syncpoints to make seeking easier
/// otherwise try to get at least the final_granulepos
void demux_ogg_scan_stream(demuxer_t* demuxer) {
ogg_demuxer_t* ogg_d = demuxer->priv;
stream_t *s = demuxer->stream;
ogg_sync_state* sync = &ogg_d->sync;
ogg_page* page= &ogg_d->page;
ogg_stream_state* oss;
ogg_stream_t* os;
ogg_packet op;
int np,sid,p;
void *context = NULL;
off_t pos, last_pos;
pos = last_pos = demuxer->movi_start;
// Reset the stream
if(index_mode == 2) {
stream_seek(s,demuxer->movi_start);
} else {
//the 270000 are just a wild guess
stream_seek(s,max(ogg_d->pos,demuxer->movi_end-270000));
}
ogg_sync_reset(sync);
// Get the serial number of the stream we use
if(demuxer->video->id >= 0) {
sid = demuxer->video->id;
/* demux_ogg_read_packet needs decoder context for Theora streams */
if (((sh_video_t*)demuxer->video->sh)->format == 0xFFFC)
context = ((sh_video_t*)demuxer->video->sh)->context;
}
else {
sid = demuxer->audio->id;
/* demux_ogg_read_packet needs decoder context for Vorbis streams */
if(((sh_audio_t*)demuxer->audio->sh)->format == 0xFFFE)
context = ((sh_audio_t*)demuxer->audio->sh)->context;
}
os = &ogg_d->subs[sid];
oss = &os->stream;
while(1) {
np = ogg_sync_pageseek(sync,page);
if(np < 0) { // We had to skip some bytes
if(index_mode == 2) mp_msg(MSGT_DEMUX,MSGL_ERR,"Bad page sync while building syncpoints table (%d)\n",-np);
pos += -np;
continue;
}
if(np <= 0) { // We need more data
char* buf = ogg_sync_buffer(sync,BLOCK_SIZE);
int len = stream_read(s,buf,BLOCK_SIZE);
if(len == 0 && s->eof)
break;
ogg_sync_wrote(sync,len);
continue;
}
// The page is ready
//ogg_sync_pageout(sync,page);
if(ogg_page_serialno(page) != os->stream.serialno) { // It isn't a page from the stream we want
pos += np;
continue;
}
if(ogg_stream_pagein(oss,page) != 0) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Pagein error ????\n");
pos += np;
continue;
}
p = 0;
while(ogg_stream_packetout(oss,&op) == 1) {
float pts;
int flags;
demux_ogg_read_packet(os,&op,context,&pts,&flags);
if(op.granulepos >= 0) ogg_d->final_granulepos = op.granulepos;
if(index_mode == 2 && (flags || (os->vorbis && op.granulepos >= 0))) {
ogg_d->syncpoints = (ogg_syncpoint_t*)realloc(ogg_d->syncpoints,(ogg_d->num_syncpoint+1)*sizeof(ogg_syncpoint_t));
ogg_d->syncpoints[ogg_d->num_syncpoint].granulepos = op.granulepos;
ogg_d->syncpoints[ogg_d->num_syncpoint].page_pos = (ogg_page_continued(page) && p == 0) ? last_pos : pos;
ogg_d->num_syncpoint++;
}
p++;
}
if(p > 1 || (p == 1 && ! ogg_page_continued(page)))
last_pos = pos;
pos += np;
if(index_mode == 2) mp_msg(MSGT_DEMUX,MSGL_INFO,"Building syncpoint table %d%%\r",(int)(pos*100/s->end_pos));
}
if(index_mode == 2) mp_msg(MSGT_DEMUX,MSGL_INFO,"\n");
if(index_mode == 2) mp_msg(MSGT_DEMUX,MSGL_V,"Ogg syncpoints table builed: %d syncpoints\n",ogg_d->num_syncpoint);
mp_msg(MSGT_DEMUX,MSGL_V,"Ogg stream length (granulepos): %lld\n",ogg_d->final_granulepos);
stream_reset(s);
stream_seek(s,demuxer->movi_start);
ogg_sync_reset(sync);
for(np = 0 ; np < ogg_d->num_sub ; np++) {
ogg_stream_reset(&ogg_d->subs[np].stream);
ogg_d->subs[np].lastpos = ogg_d->subs[np].lastsize = ogg_d->subs[np].hdr_packets = 0;
}
// Get the first page
while(1) {
np = ogg_sync_pageout(sync,page);
if(np <= 0) { // We need more data
char* buf = ogg_sync_buffer(sync,BLOCK_SIZE);
int len = stream_read(s,buf,BLOCK_SIZE);
if(len == 0 && s->eof) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"EOF while trying to get the first page !!!!\n");
break;
}
ogg_sync_wrote(sync,len);
continue;
}
demux_ogg_get_page_stream(ogg_d,&oss);
ogg_stream_pagein(oss,page);
break;
}
}
extern void print_wave_header(WAVEFORMATEX *h);
extern void print_video_header(BITMAPINFOHEADER *h);
/// Open an ogg physical stream
int demux_ogg_open(demuxer_t* demuxer) {
ogg_demuxer_t* ogg_d;
stream_t *s;
char* buf;
int np,s_no, n_audio = 0, n_video = 0, n_text = 0;
int audio_id = -1, video_id = -1, text_id = -1;
ogg_sync_state* sync;
ogg_page* page;
ogg_packet pack;
sh_audio_t* sh_a;
sh_video_t* sh_v;
#ifdef USE_ICONV
subcp_open();
#endif
clear_sub = -1;
s = demuxer->stream;
ogg_d = (ogg_demuxer_t*)calloc(1,sizeof(ogg_demuxer_t));
sync = &ogg_d->sync;
page = &ogg_d->page;
ogg_sync_init(sync);
while(1) {
/// Try to get a page
ogg_d->pos += ogg_d->last_size;
np = ogg_sync_pageseek(sync,page);
/// Error
if(np < 0) {
mp_msg(MSGT_DEMUX,MSGL_DBG2,"OGG demuxer : Bad page sync\n");
free(ogg_d);
return 0;
}
/// Need some more data
if(np == 0) {
int len;
buf = ogg_sync_buffer(sync,BLOCK_SIZE);
len = stream_read(s,buf,BLOCK_SIZE);
if(len == 0 && s->eof) {
free(ogg_d);
return 0;
}
ogg_sync_wrote(sync,len);
continue;
}
ogg_d->last_size = np;
// We got one page now
if( ! ogg_page_bos(page) ) { // It's not a begining page
// Header parsing end here, we need to get the page otherwise it will be lost
int id = demux_ogg_get_page_stream(ogg_d,NULL);
if(id >= 0)
ogg_stream_pagein(&ogg_d->subs[id].stream,page);
else
mp_msg(MSGT_DEMUX,MSGL_ERR,"OGG : Warning found none bos page from unknown stream %d\n",ogg_page_serialno(page));
break;
}
/// Init the data structure needed for a logical stream
ogg_d->subs = (ogg_stream_t*)realloc(ogg_d->subs,(ogg_d->num_sub+1)*sizeof(ogg_stream_t));
memset(&ogg_d->subs[ogg_d->num_sub],0,sizeof(ogg_stream_t));
/// Get the stream serial number
s_no = ogg_page_serialno(page);
ogg_stream_init(&ogg_d->subs[ogg_d->num_sub].stream,s_no);
mp_msg(MSGT_DEMUX,MSGL_DBG2,"OGG : Found a stream with serial=%d\n",s_no);
// Take the first page
ogg_stream_pagein(&ogg_d->subs[ogg_d->num_sub].stream,page);
// Get first packet of the page
ogg_stream_packetout(&ogg_d->subs[ogg_d->num_sub].stream,&pack);
// Reset our vars
sh_a = NULL;
sh_v = NULL;
// Check for Vorbis
if(pack.bytes >= 7 && ! strncmp(&pack.packet[1],"vorbis", 6) ) {
sh_a = new_sh_audio(demuxer,ogg_d->num_sub);
sh_a->format = 0xFFFE;
ogg_d->subs[ogg_d->num_sub].vorbis = 1;
n_audio++;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG : stream %d is vorbis\n",ogg_d->num_sub);
// check for Theora
# ifdef HAVE_OGGTHEORA
} else if (pack.bytes >= 7 && !strncmp (&pack.packet[1], "theora", 6)) {
int errorCode = 0;
theora_info inf;
theora_comment cc;
theora_info_init (&inf);
theora_comment_init (&cc);
errorCode = theora_decode_header (&inf, &cc, &pack);
if (errorCode)
mp_msg(MSGT_DEMUX,MSGL_ERR,"Theora header parsing failed: %i \n",
errorCode);
else
{
sh_v = new_sh_video(demuxer,ogg_d->num_sub);
sh_v->context = NULL;
sh_v->bih = (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER));
sh_v->bih->biSize=sizeof(BITMAPINFOHEADER);
sh_v->bih->biCompression= sh_v->format = 0xFFFC;
sh_v->fps = ((double)inf.fps_numerator)/
(double)inf.fps_denominator;
sh_v->frametime = ((double)inf.fps_denominator)/
(double)inf.fps_numerator;
sh_v->disp_w = sh_v->bih->biWidth = inf.width;
sh_v->disp_h = sh_v->bih->biHeight = inf.height;
sh_v->bih->biBitCount = 24;
sh_v->bih->biPlanes = 3;
sh_v->bih->biSizeImage = ((sh_v->bih->biBitCount/8) *
sh_v->bih->biWidth*sh_v->bih->biHeight);
ogg_d->subs[ogg_d->num_sub].samplerate = sh_v->fps;
ogg_d->subs[ogg_d->num_sub].theora = 1;
n_video++;
mp_msg(MSGT_DEMUX,MSGL_V,
"OGG : stream %d is theora v%i.%i.%i %i:%i, %.3f FPS,"
" aspect %i:%i\n", ogg_d->num_sub,
(int)inf.version_major,
(int)inf.version_minor,
(int)inf.version_subminor,
inf.width, inf.height,
sh_v->fps,
inf.aspect_numerator, inf.aspect_denominator);
if(verbose>0) print_video_header(sh_v->bih);
}
# endif /* HAVE_OGGTHEORA */
# ifdef HAVE_FLAC
} else if (pack.bytes >= 4 && !strncmp (&pack.packet[0], "fLaC", 4)) {
sh_a = new_sh_audio(demuxer,ogg_d->num_sub);
sh_a->format = mmioFOURCC('f', 'L', 'a', 'C');
n_audio++;
ogg_d->subs[ogg_d->num_sub].flac = 1;
sh_a->wf = NULL;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG : stream %d is FLAC\n",ogg_d->num_sub);
# endif /* HAVE_FLAC */
/// Check for old header
} else if(pack.bytes >= 142 && ! strncmp(&pack.packet[1],"Direct Show Samples embedded in Ogg",35) ) {
// Old video header
if(get_uint32 (pack.packet+96) == 0x05589f80 && pack.bytes >= 184) {
sh_v = new_sh_video(demuxer,ogg_d->num_sub);
sh_v->bih = (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER));
sh_v->bih->biSize=sizeof(BITMAPINFOHEADER);
sh_v->bih->biCompression=
sh_v->format = mmioFOURCC(pack.packet[68],pack.packet[69],
pack.packet[70],pack.packet[71]);
sh_v->frametime = get_uint64(pack.packet+164)*0.0000001;
sh_v->fps = 1/sh_v->frametime;
sh_v->disp_w = sh_v->bih->biWidth = get_uint32(pack.packet+176);
sh_v->disp_h = sh_v->bih->biHeight = get_uint32(pack.packet+180);
sh_v->bih->biBitCount = get_uint16(pack.packet+182);
if(!sh_v->bih->biBitCount) sh_v->bih->biBitCount=24; // hack, FIXME
sh_v->bih->biPlanes=1;
sh_v->bih->biSizeImage=(sh_v->bih->biBitCount>>3)*sh_v->bih->biWidth*sh_v->bih->biHeight;
ogg_d->subs[ogg_d->num_sub].samplerate = sh_v->fps;
n_video++;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG stream %d is video (old hdr)\n",ogg_d->num_sub);
if(verbose>0) print_video_header(sh_v->bih);
// Old audio header
} else if(get_uint32(pack.packet+96) == 0x05589F81) {
unsigned int extra_size;
sh_a = new_sh_audio(demuxer,ogg_d->num_sub);
extra_size = get_uint16(pack.packet+140);
sh_a->wf = (WAVEFORMATEX*)calloc(1,sizeof(WAVEFORMATEX)+extra_size);
sh_a->format = sh_a->wf->wFormatTag = get_uint16(pack.packet+124);
sh_a->channels = sh_a->wf->nChannels = get_uint16(pack.packet+126);
sh_a->samplerate = sh_a->wf->nSamplesPerSec = get_uint32(pack.packet+128);
sh_a->wf->nAvgBytesPerSec = get_uint32(pack.packet+132);
sh_a->wf->nBlockAlign = get_uint16(pack.packet+136);
sh_a->wf->wBitsPerSample = get_uint16(pack.packet+138);
sh_a->samplesize = (sh_a->wf->wBitsPerSample+7)/8;
sh_a->wf->cbSize = extra_size;
if(extra_size > 0)
memcpy(sh_a->wf+sizeof(WAVEFORMATEX),pack.packet+142,extra_size);
ogg_d->subs[ogg_d->num_sub].samplerate = sh_a->samplerate; // * sh_a->channels;
n_audio++;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG stream %d is audio (old hdr)\n",ogg_d->num_sub);
if(verbose>0) print_wave_header(sh_a->wf);
} else
mp_msg(MSGT_DEMUX,MSGL_WARN,"OGG stream %d contains an old header but the header type is unknown\n",ogg_d->num_sub);
// Check new header
} else if ( (*pack.packet & PACKET_TYPE_BITS ) == PACKET_TYPE_HEADER &&
pack.bytes >= (int)sizeof(stream_header)+1) {
stream_header *st = (stream_header*)(pack.packet+1);
/// New video header
if(strncmp(st->streamtype,"video",5) == 0) {
sh_v = new_sh_video(demuxer,ogg_d->num_sub);
sh_v->bih = (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER));
sh_v->bih->biSize=sizeof(BITMAPINFOHEADER);
sh_v->bih->biCompression=
sh_v->format = mmioFOURCC(st->subtype[0],st->subtype[1],
st->subtype[2],st->subtype[3]);
sh_v->frametime = get_uint64(&st->time_unit)*0.0000001;
sh_v->fps = 1.0/sh_v->frametime;
sh_v->bih->biBitCount = get_uint16(&st->bits_per_sample);
sh_v->disp_w = sh_v->bih->biWidth = get_uint32(&st->sh.video.width);
sh_v->disp_h = sh_v->bih->biHeight = get_uint32(&st->sh.video.height);
if(!sh_v->bih->biBitCount) sh_v->bih->biBitCount=24; // hack, FIXME
sh_v->bih->biPlanes=1;
sh_v->bih->biSizeImage=(sh_v->bih->biBitCount>>3)*sh_v->bih->biWidth*sh_v->bih->biHeight;
ogg_d->subs[ogg_d->num_sub].samplerate= sh_v->fps;
n_video++;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG stream %d is video (new hdr)\n",ogg_d->num_sub);
if(verbose>0) print_video_header(sh_v->bih);
/// New audio header
} else if(strncmp(st->streamtype,"audio",5) == 0) {
char buffer[5];
unsigned int extra_size = get_uint32 (&st->size) - sizeof(stream_header);
memcpy(buffer,st->subtype,4);
buffer[4] = '\0';
sh_a = new_sh_audio(demuxer,ogg_d->num_sub);
sh_a->wf = (WAVEFORMATEX*)calloc(1,sizeof(WAVEFORMATEX)+extra_size);
sh_a->format = sh_a->wf->wFormatTag = strtol(buffer, NULL, 16);
sh_a->channels = sh_a->wf->nChannels = get_uint16(&st->sh.audio.channels);
sh_a->samplerate = sh_a->wf->nSamplesPerSec = get_uint64(&st->samples_per_unit);
sh_a->wf->nAvgBytesPerSec = get_uint32(&st->sh.audio.avgbytespersec);
sh_a->wf->nBlockAlign = get_uint16(&st->sh.audio.blockalign);
sh_a->wf->wBitsPerSample = get_uint16(&st->bits_per_sample);
sh_a->samplesize = (sh_a->wf->wBitsPerSample+7)/8;
sh_a->wf->cbSize = extra_size;
if(extra_size)
memcpy(sh_a->wf+sizeof(WAVEFORMATEX),st+1,extra_size);
ogg_d->subs[ogg_d->num_sub].samplerate = sh_a->samplerate; // * sh_a->channels;
n_audio++;
mp_msg(MSGT_DEMUX,MSGL_V,"OGG stream %d is audio (new hdr)\n",ogg_d->num_sub);
if(verbose>0) print_wave_header(sh_a->wf);
/// Check for text (subtitles) header
} else if (strncmp(st->streamtype, "text", 4) == 0) {
mp_msg(MSGT_DEMUX, MSGL_V, "OGG stream %d is text\n", ogg_d->num_sub);
ogg_d->subs[ogg_d->num_sub].samplerate= get_uint64(&st->time_unit)/10;
ogg_d->subs[ogg_d->num_sub].text = 1;
if (demuxer->sub->id == n_text)
text_id = ogg_d->num_sub;
n_text++;
demux_ogg_init_sub();
//// Unknown header type
} else
mp_msg(MSGT_DEMUX,MSGL_ERR,"OGG stream %d has a header marker but is of an unknown type\n",ogg_d->num_sub);
/// Unknown (invalid ?) header
} else
mp_msg(MSGT_DEMUX,MSGL_ERR,"OGG stream %d is of an unknown type\n",ogg_d->num_sub);
if(sh_a || sh_v) {
demux_stream_t* ds = NULL;
if(sh_a) {
// If the audio stream is not defined we took the first one
if(demuxer->audio->id == -1) {
demuxer->audio->id = n_audio - 1;
// if(sh_a->wf) print_wave_header(sh_a->wf);
}
/// Is it the stream we want
if(demuxer->audio->id == (n_audio - 1)) {
demuxer->audio->sh = sh_a;
sh_a->ds = demuxer->audio;
ds = demuxer->audio;
audio_id = ogg_d->num_sub;
}
}
if(sh_v) {
/// Also for video
if(demuxer->video->id == -1) {
demuxer->video->id = n_video - 1;
// if(sh_v->bih) print_video_header(sh_v->bih);
}
if(demuxer->video->id == (n_video - 1)) {
demuxer->video->sh = sh_v;
sh_v->ds = demuxer->video;
ds = demuxer->video;
video_id = ogg_d->num_sub;
}
}
/// Add the header packets if the stream isn't seekable
if(ds && !s->end_pos) {
/// Finish the page, otherwise packets will be lost
do {
demux_ogg_add_packet(ds,&ogg_d->subs[ogg_d->num_sub],ogg_d->num_sub,&pack);
} while(ogg_stream_packetout(&ogg_d->subs[ogg_d->num_sub].stream,&pack) == 1);
}
}
ogg_d->num_sub++;
}
if(!n_video && !n_audio) {
free(ogg_d);
return 0;
}
/// Finish to setup the demuxer
demuxer->priv = ogg_d;
if(!n_video || (video_id < 0))
demuxer->video->id = -2;
else
demuxer->video->id = video_id;
if(!n_audio || (audio_id < 0))
demuxer->audio->id = -2;
else
demuxer->audio->id = audio_id;
if(!n_text || (text_id < 0))
demuxer->sub->id = -2;
else
demuxer->sub->id = text_id;
ogg_d->final_granulepos=0;
if(!s->end_pos)
demuxer->seekable = 0;
else {
demuxer->movi_start = s->start_pos; // Needed for XCD (Ogg written in MODE2)
demuxer->movi_end = s->end_pos;
demuxer->seekable = 1;
demux_ogg_scan_stream(demuxer);
}
mp_msg(MSGT_DEMUX,MSGL_V,"OGG demuxer : found %d audio stream%s, %d video stream%s and %d text stream%s\n",n_audio,n_audio>1?"s":"",n_video,n_video>1?"s":"",n_text,n_text>1?"s":"");
return 1;
}
int demux_ogg_fill_buffer(demuxer_t *d) {
ogg_demuxer_t* ogg_d;
stream_t *s;
demux_stream_t *ds;
ogg_sync_state* sync;
ogg_stream_state* os;
ogg_page* page;
ogg_packet pack;
int np = 0, id=0;
s = d->stream;
ogg_d = d->priv;
sync = &ogg_d->sync;
page = &ogg_d->page;
/// Find the stream we are working on
if ( (id = demux_ogg_get_page_stream(ogg_d,&os)) < 0) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"OGG demuxer : can't get current stream\n");
return 0;
}
while(1) {
np = 0;
ds = NULL;
/// Try to get some packet from the current page
while( (np = ogg_stream_packetout(os,&pack)) != 1) {
/// No packet we go the next page
if(np == 0) {
while(1) {
int pa,len;
char *buf;
ogg_d->pos += ogg_d->last_size;
/// Get the next page from the physical stream
while( (pa = ogg_sync_pageseek(sync,page)) <= 0) {
/// Error : we skip some bytes
if(pa < 0) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"OGG : Page out not synced, we skip some bytes\n");
ogg_d->pos -= pa;
continue;
}
/// We need more data
buf = ogg_sync_buffer(sync,BLOCK_SIZE);
len = stream_read(s,buf,BLOCK_SIZE);
if(len == 0 && s->eof) {
mp_msg(MSGT_DEMUX,MSGL_DBG2,"OGG : Stream EOF !!!!\n");
return 0;
}
ogg_sync_wrote(sync,len);
} /// Page loop
ogg_d->last_size = pa;
/// Find the page's logical stream
if( (id = demux_ogg_get_page_stream(ogg_d,&os)) < 0) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"OGG demuxer error : we met an unknown stream\n");
return 0;
}
/// Take the page
if(ogg_stream_pagein(os,page) == 0)
break;
/// Page was invalid => retry
mp_msg(MSGT_DEMUX,MSGL_WARN,"OGG demuxer : got invalid page !!!!!\n");
ogg_d->pos += ogg_d->last_size;
}
} else /// Packet was corrupted
mp_msg(MSGT_DEMUX,MSGL_WARN,"OGG : bad packet in stream %d\n",id);
} /// Packet loop
/// Is the actual logical stream in use ?
if(id == d->audio->id)
ds = d->audio;
else if(id == d->video->id)
ds = d->video;
else if (ogg_d->subs[id].text)
ds = d->sub;
if(ds) {
if(!demux_ogg_add_packet(ds,&ogg_d->subs[id],id,&pack))
continue; /// Unuseful packet, get another
d->filepos = ogg_d->pos;
return 1;
}
} /// while(1)
}
/// For avi with Ogg audio stream we have to create an ogg demuxer for this
// stream, then we join the avi and ogg demuxer with a demuxers demuxer
demuxer_t* init_avi_with_ogg(demuxer_t* demuxer) {
demuxer_t *od;
ogg_demuxer_t *ogg_d;
stream_t* s;
uint32_t hdrsizes[3];
demux_packet_t *dp;
sh_audio_t *sh_audio = demuxer->audio->sh;
int np;
unsigned char *p = NULL,*buf;
int plen;
/// Check that the cbSize is enouth big for the following reads
if(sh_audio->wf->cbSize < 22+3*sizeof(uint32_t)) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"AVI OGG : Initial audio header is too small !!!!!\n");
goto fallback;
}
/// Get the size of the 3 header packet
memcpy(hdrsizes, ((unsigned char*)sh_audio->wf)+22+sizeof(WAVEFORMATEX), 3*sizeof(uint32_t));
// printf("\n!!!!!! hdr sizes: %d %d %d \n",hdrsizes[0],hdrsizes[1],hdrsizes[2]);
/// Check the size
if(sh_audio->wf->cbSize < 22+3*sizeof(uint32_t)+hdrsizes[0]+hdrsizes[1] + hdrsizes[2]) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"AVI OGG : Audio header is too small !!!!!\n");
goto fallback;
}
// Build the ogg demuxer private datas
ogg_d = (ogg_demuxer_t*)calloc(1,sizeof(ogg_demuxer_t));
ogg_d->num_sub = 1;
ogg_d->subs = (ogg_stream_t*)malloc(sizeof(ogg_stream_t));
ogg_d->subs[0].vorbis = 1;
// Init the ogg physical stream
ogg_sync_init(&ogg_d->sync);
// Get the first page of the stream : we assume there only 1 logical stream
while((np = ogg_sync_pageout(&ogg_d->sync,&ogg_d->page)) <= 0 ) {
if(np < 0) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"AVI OGG error : Can't init using first stream packets\n");
free(ogg_d);
goto fallback;
}
// Add some data
plen = ds_get_packet(demuxer->audio,&p);
buf = ogg_sync_buffer(&ogg_d->sync,plen);
memcpy(buf,p,plen);
ogg_sync_wrote(&ogg_d->sync,plen);
}
// Init the logical stream
mp_msg(MSGT_DEMUX,MSGL_DBG2,"AVI OGG found page with serial %d\n",ogg_page_serialno(&ogg_d->page));
ogg_stream_init(&ogg_d->subs[0].stream,ogg_page_serialno(&ogg_d->page));
// Write the page
ogg_stream_pagein(&ogg_d->subs[0].stream,&ogg_d->page);
// Create the ds_stream and the ogg demuxer
s = new_ds_stream(demuxer->audio);
od = new_demuxer(s,DEMUXER_TYPE_OGG,0,-2,-2);
/// Add the header packets in the ogg demuxer audio stream
// Initial header
dp = new_demux_packet(hdrsizes[0]);
memcpy(dp->buffer,((unsigned char*)sh_audio->wf)+22+sizeof(WAVEFORMATEX)+3*sizeof(uint32_t),hdrsizes[0]);
ds_add_packet(od->audio,dp);
/// Comments
dp = new_demux_packet(hdrsizes[1]);
memcpy(dp->buffer,((unsigned char*)sh_audio->wf)+22+sizeof(WAVEFORMATEX)+3*sizeof(uint32_t)+hdrsizes[0],hdrsizes[1]);
ds_add_packet(od->audio,dp);
/// Code book
dp = new_demux_packet(hdrsizes[2]);
memcpy(dp->buffer,((unsigned char*)sh_audio->wf)+22+sizeof(WAVEFORMATEX)+3*sizeof(uint32_t)+hdrsizes[0]+hdrsizes[1],hdrsizes[2]);
ds_add_packet(od->audio,dp);
// Finish setting up the ogg demuxer
od->priv = ogg_d;
sh_audio = new_sh_audio(od,0);
od->audio->id = 0;
od->video->id = -2;
od->audio->sh = sh_audio;
sh_audio->ds = od->audio;
sh_audio->format = 0xFFFE;
/// Return the joined demuxers
return new_demuxers_demuxer(demuxer,od,demuxer);
fallback:
demuxer->audio->id = -2;
return demuxer;
}
extern void resync_audio_stream(sh_audio_t *sh_audio);
void demux_ogg_seek(demuxer_t *demuxer,float rel_seek_secs,int flags) {
ogg_demuxer_t* ogg_d = demuxer->priv;
ogg_sync_state* sync = &ogg_d->sync;
ogg_page* page= &ogg_d->page;
ogg_stream_state* oss;
ogg_stream_t* os;
demux_stream_t* ds;
sh_audio_t* sh_audio = demuxer->audio->sh;
ogg_packet op;
float rate;
int i,sp,first,precision=1,do_seek=1;
vorbis_info* vi = NULL;
int64_t gp = 0, old_gp;
void *context = NULL;
off_t pos, old_pos;
int np;
int is_gp_valid;
float pts;
int is_keyframe;
if(demuxer->video->id >= 0) {
ds = demuxer->video;
/* demux_ogg_read_packet needs decoder context for Theora streams */
if (((sh_video_t*)demuxer->video->sh)->format == 0xFFFC)
context = ((sh_video_t*)demuxer->video->sh)->context;
rate = ogg_d->subs[ds->id].samplerate;
} else {
ds = demuxer->audio;
/* demux_ogg_read_packet needs decoder context for Vorbis streams */
if(((sh_audio_t*)demuxer->audio->sh)->format == 0xFFFE)
context = ((sh_audio_t*)demuxer->audio->sh)->context;
vi = &((ov_struct_t*)((sh_audio_t*)ds->sh)->context)->vi;
rate = (float)vi->rate;
}
os = &ogg_d->subs[ds->id];
oss = &os->stream;
old_gp = os->lastpos;
old_pos = ogg_d->pos;
//calculate the granulepos to seek to
gp = flags & 1 ? 0 : os->lastpos;
if(flags & 2) {
if (ogg_d->final_granulepos > 0)
gp += ogg_d->final_granulepos * rel_seek_secs;
else
gp += rel_seek_secs * (demuxer->movi_end - demuxer->movi_start) * os->lastpos / ogg_d->pos;
} else
gp += rel_seek_secs * rate;
if (gp < 0) gp = 0;
//calculate the filepos to seek to
if(ogg_d->syncpoints) {
for(sp = 0; sp < ogg_d->num_syncpoint ; sp++) {
if(ogg_d->syncpoints[sp].granulepos >= gp) break;
}
if(sp >= ogg_d->num_syncpoint) return;
if (sp > 0 && ogg_d->syncpoints[sp].granulepos - gp > gp - ogg_d->syncpoints[sp-1].granulepos)
sp--;
if (ogg_d->syncpoints[sp].granulepos == os->lastpos) {
if (sp > 0 && gp < os->lastpos) sp--;
if (sp < ogg_d->num_syncpoint-1 && gp > os->lastpos) sp++;
}
pos = ogg_d->syncpoints[sp].page_pos;
precision = 0;
} else {
pos = flags & 1 ? 0 : ogg_d->pos;
if(flags & 2)
pos += (demuxer->movi_end - demuxer->movi_start) * rel_seek_secs;
else {
if (ogg_d->final_granulepos > 0) {
pos += rel_seek_secs * (demuxer->movi_end - demuxer->movi_start) / (ogg_d->final_granulepos / rate);
} else if (os->lastpos > 0) {
pos += rel_seek_secs * ogg_d->pos / (os->lastpos / rate);
}
}
if (pos < 0) pos = 0;
if (pos > (demuxer->movi_end - demuxer->movi_start)) return;
} // if(ogg_d->syncpoints)
while(1) {
if (do_seek) {
stream_seek(demuxer->stream,pos+demuxer->movi_start);
ogg_sync_reset(sync);
for(i = 0 ; i < ogg_d->num_sub ; i++) {
ogg_stream_reset(&ogg_d->subs[i].stream);
ogg_d->subs[i].lastpos = ogg_d->subs[i].lastsize = 0;
}
ogg_d->pos = pos;
ogg_d->last_size = 0;
/* we just guess that we reached correct granulepos, in case a
subsequent search occurs before we read a valid granulepos */
os->lastpos = gp;
first = !(ogg_d->syncpoints);
do_seek=0;
}
ogg_d->pos += ogg_d->last_size;
ogg_d->last_size = 0;
np = ogg_sync_pageseek(sync,page);
if(np < 0)
ogg_d->pos -= np;
if(np <= 0) { // We need more data
char* buf = ogg_sync_buffer(sync,BLOCK_SIZE);
int len = stream_read(demuxer->stream,buf,BLOCK_SIZE);
if(len == 0 && demuxer->stream->eof) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"EOF while trying to seek !!!!\n");
break;
}
ogg_sync_wrote(sync,len);
continue;
}
ogg_d->last_size = np;
if(ogg_page_serialno(page) != oss->serialno)
continue;
if(ogg_stream_pagein(oss,page) != 0)
continue;
while(1) {
np = ogg_stream_packetout(oss,&op);
if(np < 0)
continue;
else if(np == 0)
break;
if (first) { /* Discard the first packet as it's probably broken,
and we don't have any other means to decide whether it is
complete or not. */
first = 0;
break;
}
is_gp_valid = (op.granulepos >= 0);
demux_ogg_read_packet(os,&op,context,&pts,&is_keyframe);
if (precision && is_gp_valid) {
precision--;
if (abs(gp - op.granulepos) > rate && (op.granulepos != old_gp)) {
//prepare another seek because we are off by more than 1s
pos += (gp - op.granulepos) * (pos - old_pos) / (op.granulepos - old_gp);
if (pos < 0) pos = 0;
if (pos < (demuxer->movi_end - demuxer->movi_start)) {
do_seek=1;
break;
}
}
}
if (is_gp_valid && (pos > 0) && (old_gp > gp)
&& (2 * (old_gp - op.granulepos) < old_gp - gp)) {
/* prepare another seek because looking for a syncpoint
destroyed the backward search */
pos = old_pos - 1.5 * (old_pos - pos);
if (pos < 0) pos = 0;
if (pos < (demuxer->movi_end - demuxer->movi_start)) {
do_seek=1;
break;
}
}
if(!precision && (is_keyframe || os->vorbis) ) {
ogg_sub.lines = 0;
vo_sub = &ogg_sub;
vo_osd_changed(OSDTYPE_SUBTITLE);
clear_sub = -1;
demux_ogg_add_packet(ds,os,ds->id,&op);
if(sh_audio)
resync_audio_stream(sh_audio);
return;
}
}
}
mp_msg(MSGT_DEMUX,MSGL_ERR,"Can't find the good packet :(\n");
}
void demux_close_ogg(demuxer_t* demuxer) {
ogg_demuxer_t* ogg_d = demuxer->priv;
if(!ogg_d)
return;
#ifdef USE_ICONV
subcp_close();
#endif
if(ogg_d->subs)
free(ogg_d->subs);
if(ogg_d->syncpoints)
free(ogg_d->syncpoints);
free(ogg_d);
}
int demux_ogg_control(demuxer_t *demuxer,int cmd, void *arg){
ogg_demuxer_t* ogg_d = demuxer->priv;
ogg_stream_t* os;
float rate;
if(demuxer->video->id >= 0) {
os = &ogg_d->subs[demuxer->video->id];
rate = os->samplerate;
} else {
os = &ogg_d->subs[demuxer->audio->id];
rate = (float)((ov_struct_t*)((sh_audio_t*)demuxer->audio->sh)->context)->vi.rate;
}
switch(cmd) {
case DEMUXER_CTRL_GET_TIME_LENGTH:
if (ogg_d->final_granulepos<=0) return DEMUXER_CTRL_DONTKNOW;
*((unsigned long *)arg)=ogg_d->final_granulepos / rate;
return DEMUXER_CTRL_GUESS;
case DEMUXER_CTRL_GET_PERCENT_POS:
if (ogg_d->final_granulepos<=0) return DEMUXER_CTRL_DONTKNOW;
*((int *)arg)=(int)( (os->lastpos*100) / ogg_d->final_granulepos);
return DEMUXER_CTRL_OK;
default:
return DEMUXER_CTRL_NOTIMPL;
}
}
#endif
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