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mpv/libmpdemux/demux_real.c

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/*
* Real parser & demuxer
* copyright (C) 2001 Alex Beregszaszi
* copyright (C) 2005, 2006 Roberto Togni
* based on FFmpeg's libav/rm.c
*
* audio codecs: (supported by RealPlayer8 for Linux)
* DNET - RealAudio 3.0, really it's AC3 in swapped-byteorder
* SIPR - SiproLab's audio codec, ACELP decoder working with MPlayer,
* needs fine-tuning too :)
* ATRC - RealAudio 8 (ATRAC3) - www.minidisc.org/atrac3_article.pdf,
* ACM decoder uploaded, needs some fine-tuning to work
* -> RealAudio 8
* COOK/COKR - Real Cooker -> RealAudio G2
*
* video codecs: (supported by RealPlayer8 for Linux)
* RV10 - H.263 based, working with libavcodec's decoder
* RV20-RV40 - using RealPlayer's codec plugins
*
* 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 <inttypes.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "mpbswap.h"
#include "stream/stream.h"
#include "aviprint.h"
#include "demuxer.h"
#include "stheader.h"
#include "demux_real.h"
//#define mp_dbg(mod,lev, args... ) mp_msg_c((mod<<8)|lev, ## args )
#define MKTAG(a, b, c, d) (a | (b << 8) | (c << 16) | (d << 24))
#define MAX_STREAMS 32
static unsigned char sipr_swaps[38][2]={
{0,63},{1,22},{2,44},{3,90},{5,81},{7,31},{8,86},{9,58},{10,36},{12,68},
{13,39},{14,73},{15,53},{16,69},{17,57},{19,88},{20,34},{21,71},{24,46},
{25,94},{26,54},{28,75},{29,50},{32,70},{33,92},{35,74},{38,85},{40,56},
{42,87},{43,65},{45,59},{48,79},{49,93},{51,89},{55,95},{61,76},{67,83},
{77,80} };
typedef struct {
unsigned int timestamp;
int offset;
// int packetno;
// int len; /* only filled by our index generator */
// int flags; /* only filled by our index generator */
} real_index_table_t;
typedef struct {
/* for seeking */
int index_chunk_offset;
real_index_table_t *index_table[MAX_STREAMS];
// int *index_table[MAX_STREAMS];
int index_table_size[MAX_STREAMS];
int index_malloc_size[MAX_STREAMS];
int data_chunk_offset;
int num_of_packets;
int current_packet;
// need for seek
int audio_need_keyframe;
int video_after_seek;
int current_apacket;
int current_vpacket;
// timestamp correction:
int64_t kf_base;// timestamp of the prev. video keyframe
unsigned int kf_pts; // timestamp of next video keyframe
unsigned int a_pts; // previous audio timestamp
double v_pts; // previous video timestamp
unsigned long duration;
/* stream id table */
// int last_a_stream;
// int a_streams[MAX_STREAMS];
// int last_v_stream;
// int v_streams[MAX_STREAMS];
/**
* Used to demux multirate files
*/
int is_multirate; ///< != 0 for multirate files
int str_data_offset[MAX_STREAMS]; ///< Data chunk offset for every audio/video stream
int audio_curpos; ///< Current file position for audio demuxing
int video_curpos; ///< Current file position for video demuxing
int a_num_of_packets; ///< Number of audio packets
int v_num_of_packets; ///< Number of video packets
int a_bitrate; ///< Audio bitrate
int v_bitrate; ///< Video bitrate
int stream_switch; ///< Flag used to switch audio/video demuxing
/**
* Used to reorder audio data
*/
unsigned int intl_id[MAX_STREAMS]; ///< interleaver id, per stream
int sub_packet_size[MAX_STREAMS]; ///< sub packet size, per stream
int sub_packet_h[MAX_STREAMS]; ///< number of coded frames per block
int coded_framesize[MAX_STREAMS]; ///< coded frame size, per stream
int audiopk_size[MAX_STREAMS]; ///< audio packet size
unsigned char *audio_buf; ///< place to store reordered audio data
double *audio_timestamp; ///< timestamp for each audio packet
int sub_packet_cnt; ///< number of subpacket already received
int audio_filepos; ///< file position of first audio packet in block
} real_priv_t;
//! use at most 200 MB of memory for index, corresponds to around 25 million entries
#define MAX_INDEX_ENTRIES (200*1024*1024 / sizeof(real_index_table_t))
/* originally from FFmpeg */
static void get_str(int isbyte, demuxer_t *demuxer, char *buf, int buf_size)
{
int len;
if (isbyte)
len = stream_read_char(demuxer->stream);
else
len = stream_read_word(demuxer->stream);
stream_read(demuxer->stream, buf, (len > buf_size) ? buf_size : len);
if (len > buf_size)
stream_skip(demuxer->stream, len-buf_size);
mp_msg(MSGT_DEMUX, MSGL_V, "read_str: %d bytes read\n", len);
}
static void dump_index(demuxer_t *demuxer, int stream_id)
{
real_priv_t *priv = demuxer->priv;
real_index_table_t *index;
int i, entries;
if (!mp_msg_test(MSGT_DEMUX,MSGL_V))
return;
if ((unsigned)stream_id >= MAX_STREAMS)
return;
index = priv->index_table[stream_id];
entries = priv->index_table_size[stream_id];
mp_msg(MSGT_DEMUX, MSGL_V, "Index table for stream %d\n", stream_id);
for (i = 0; i < entries; i++)
{
#if 1
mp_msg(MSGT_DEMUX, MSGL_V,"i: %d, pos: %d, timestamp: %u\n", i, index[i].offset, index[i].timestamp);
#else
mp_msg(MSGT_DEMUX, MSGL_V,"packetno: %x pos: %x len: %x timestamp: %x flags: %x\n",
index[i].packetno, index[i].offset, index[i].len, index[i].timestamp,
index[i].flags);
#endif
}
}
static int parse_index_chunk(demuxer_t *demuxer)
{
real_priv_t *priv = demuxer->priv;
int origpos = stream_tell(demuxer->stream);
int next_header_pos = priv->index_chunk_offset;
int i, entries, stream_id;
read_index:
stream_seek(demuxer->stream, next_header_pos);
i = stream_read_dword_le(demuxer->stream);
if ((i == -256) || (i != MKTAG('I', 'N', 'D', 'X')))
{
mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no index chunk found on given address (%d)\n",
next_header_pos);
index_mode = -1;
if (i == -256)
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, origpos);
return 0;
//goto end;
}
mp_msg(MSGT_DEMUX, MSGL_V,"Reading index table from index chunk (%d)\n",
next_header_pos);
i = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"size: %d bytes\n", i);
i = stream_read_word(demuxer->stream);
if (i != 0)
mp_msg(MSGT_DEMUX, MSGL_WARN,"Hmm, index table with unknown version (%d), please report it to MPlayer developers!\n", i);
entries = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"entries: %d\n", entries);
stream_id = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"stream_id: %d\n", stream_id);
next_header_pos = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"next_header_pos: %d\n", next_header_pos);
if (entries <= 0 || entries > MAX_INDEX_ENTRIES)
{
if (next_header_pos)
goto read_index;
i = entries;
goto end;
}
priv->index_table_size[stream_id] = entries;
priv->index_table[stream_id] = calloc(priv->index_table_size[stream_id], sizeof(real_index_table_t));
for (i = 0; i < entries; i++)
{
stream_skip(demuxer->stream, 2); /* version */
priv->index_table[stream_id][i].timestamp = stream_read_dword(demuxer->stream);
priv->index_table[stream_id][i].offset = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 4); /* packetno */
// priv->index_table[stream_id][i].packetno = stream_read_dword(demuxer->stream);
// printf("Index table: Stream#%d: entry: %d: pos: %d\n",
// stream_id, i, priv->index_table[stream_id][i].offset);
}
dump_index(demuxer, stream_id);
if (next_header_pos > 0)
goto read_index;
end:
if (i == -256)
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, origpos);
if (i == -256)
return 0;
else
return 1;
}
#if 1
static void add_index_item(demuxer_t *demuxer, int stream_id, unsigned int timestamp, int offset)
{
if ((unsigned)stream_id < MAX_STREAMS)
{
real_priv_t *priv = demuxer->priv;
real_index_table_t *index;
if (priv->index_table_size[stream_id] >= MAX_INDEX_ENTRIES) {
mp_msg(MSGT_DEMUXER, MSGL_WARN, "Index too large during building\n");
return;
}
if (priv->index_table_size[stream_id] >= priv->index_malloc_size[stream_id])
{
if (priv->index_malloc_size[stream_id] == 0)
priv->index_malloc_size[stream_id] = 2048;
else
priv->index_malloc_size[stream_id] += priv->index_malloc_size[stream_id] / 2;
// in case we have a really large chunk...
if (priv->index_table_size[stream_id] >=
priv->index_malloc_size[stream_id])
priv->index_malloc_size[stream_id] =
priv->index_table_size[stream_id] + 1;
priv->index_table[stream_id] = realloc(priv->index_table[stream_id], priv->index_malloc_size[stream_id]*sizeof(priv->index_table[0][0]));
}
if (priv->index_table_size[stream_id] > 0)
{
index = &priv->index_table[stream_id][priv->index_table_size[stream_id] - 1];
if (index->timestamp >= timestamp || index->offset >= offset)
return;
}
index = &priv->index_table[stream_id][priv->index_table_size[stream_id]++];
index->timestamp = timestamp;
index->offset = offset;
}
}
static void add_index_segment(demuxer_t *demuxer, int seek_stream_id, int64_t seek_timestamp)
{
int tag, len, stream_id, flags;
unsigned int timestamp;
if (seek_timestamp != -1 && (unsigned)seek_stream_id >= MAX_STREAMS)
return;
while (1)
{
demuxer->filepos = stream_tell(demuxer->stream);
tag = stream_read_dword(demuxer->stream);
if (tag == MKTAG('A', 'T', 'A', 'D'))
{
stream_skip(demuxer->stream, 14);
continue; /* skip to next loop */
}
len = tag & 0xffff;
if (tag == -256 || len < 12)
break;
stream_id = stream_read_word(demuxer->stream);
timestamp = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 1); /* reserved */
flags = stream_read_char(demuxer->stream);
if (flags == -256)
break;
if (flags & 2)
{
add_index_item(demuxer, stream_id, timestamp, demuxer->filepos);
if (stream_id == seek_stream_id && timestamp >= seek_timestamp)
{
stream_seek(demuxer->stream, demuxer->filepos);
return;
}
}
// printf("Index: stream=%d packet=%d timestamp=%u len=%d flags=0x%x datapos=0x%x\n", stream_id, entries, timestamp, len, flags, index->offset);
/* skip data */
stream_skip(demuxer->stream, len-12);
}
}
static int generate_index(demuxer_t *demuxer)
{
real_priv_t *priv = demuxer->priv;
int origpos = stream_tell(demuxer->stream);
int data_pos = priv->data_chunk_offset-10;
int i;
int tag;
stream_seek(demuxer->stream, data_pos);
tag = stream_read_dword(demuxer->stream);
if (tag != MKTAG('A', 'T', 'A', 'D'))
{
mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no data chunk found on given address (%d)\n", data_pos);
}
else
{
stream_skip(demuxer->stream, 14);
add_index_segment(demuxer, -1, -1);
}
for (i = 0; i < MAX_STREAMS; i++)
{
if (priv->index_table_size[i] > 0)
{
dump_index(demuxer, i);
}
}
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, origpos);
return 0;
}
#else
static int generate_index(demuxer_t *demuxer)
{
real_priv_t *priv = demuxer->priv;
int origpos = stream_tell(demuxer->stream);
int data_pos = priv->data_chunk_offset-10;
int num_of_packets = 0;
int i, entries = 0;
int len, stream_id = 0, flags;
unsigned int timestamp;
int tab_pos = 0;
read_index:
stream_seek(demuxer->stream, data_pos);
i = stream_read_dword_le(demuxer->stream);
if ((i == -256) || (i != MKTAG('D', 'A', 'T', 'A')))
{
mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no data chunk found on given address (%d)\n",
data_pos);
goto end;
}
stream_skip(demuxer->stream, 4); /* chunk size */
stream_skip(demuxer->stream, 2); /* version */
num_of_packets = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_V,"Generating index table from raw data (pos: 0x%x) for %d packets\n",
data_pos, num_of_packets);
data_pos = stream_read_dword_le(demuxer->stream)-10; /* next data chunk */
for (i = 0; i < MAX_STREAMS; i++)
{
priv->index_table_size[i] = num_of_packets;
priv->index_table[i] = calloc(priv->index_table_size[i], sizeof(real_index_table_t));
// priv->index_table[stream_id] = realloc(priv->index_table[stream_id],
// priv->index_table_size[stream_id] * sizeof(real_index_table_t));
}
tab_pos = 0;
// memset(priv->index_table_size, 0, sizeof(int)*MAX_STREAMS);
// memset(priv->index_table, 0, sizeof(real_index_table_t)*MAX_STREAMS);
while (tab_pos < num_of_packets)
{
i = stream_read_char(demuxer->stream);
if (i == -256)
goto end;
stream_skip(demuxer->stream, 1);
// stream_skip(demuxer->stream, 2); /* version */
len = stream_read_word(demuxer->stream);
stream_id = stream_read_word(demuxer->stream);
timestamp = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 1); /* reserved */
flags = stream_read_char(demuxer->stream);
i = tab_pos;
// priv->index_table_size[stream_id] = i;
// if (priv->index_table[stream_id] == NULL)
// priv->index_table[stream_id] = malloc(priv->index_table_size[stream_id] * sizeof(real_index_table_t));
// else
// priv->index_table[stream_id] = realloc(priv->index_table[stream_id],
// priv->index_table_size[stream_id] * sizeof(real_index_table_t));
priv->index_table[stream_id][i].timestamp = timestamp;
priv->index_table[stream_id][i].offset = stream_tell(demuxer->stream)-12;
priv->index_table[stream_id][i].len = len;
priv->index_table[stream_id][i].packetno = entries;
priv->index_table[stream_id][i].flags = flags;
tab_pos++;
/* skip data */
stream_skip(demuxer->stream, len-12);
}
dump_index(demuxer, stream_id);
if (data_pos)
goto read_index;
end:
if (i == -256)
stream_reset(demuxer->stream);
stream_seek(demuxer->stream, origpos);
if (i == -256)
return 0;
else
return 1;
}
#endif
static int real_check_file(demuxer_t* demuxer)
{
real_priv_t *priv;
int c;
mp_msg(MSGT_DEMUX,MSGL_V,"Checking for REAL\n");
c = stream_read_dword_le(demuxer->stream);
if (c == -256)
return 0; /* EOF */
if (c != MKTAG('.', 'R', 'M', 'F'))
return 0; /* bad magic */
priv = malloc(sizeof(real_priv_t));
memset(priv, 0, sizeof(real_priv_t));
demuxer->priv = priv;
return DEMUXER_TYPE_REAL;
}
void hexdump(char *, unsigned long);
#define SKIP_BITS(n) buffer<<=n
#define SHOW_BITS(n) ((buffer)>>(32-(n)))
double real_fix_timestamp(unsigned char *buf, unsigned int timestamp, unsigned int format, int64_t *kf_base, int *kf_pts, double *pts){
double v_pts;
unsigned char *s = buf + 1 + (*buf+1)*8;
uint32_t buffer= (s[0]<<24) + (s[1]<<16) + (s[2]<<8) + s[3];
unsigned int kf=timestamp;
int pict_type;
unsigned int orig_kf;
if(format==mmioFOURCC('R','V','3','0') || format==mmioFOURCC('R','V','4','0')){
if(format==mmioFOURCC('R','V','3','0')){
SKIP_BITS(3);
pict_type= SHOW_BITS(2);
SKIP_BITS(2 + 7);
}else{
SKIP_BITS(1);
pict_type= SHOW_BITS(2);
SKIP_BITS(2 + 7 + 3);
}
orig_kf=
kf= SHOW_BITS(13); // kf= 2*SHOW_BITS(12);
// if(pict_type==0)
if(pict_type<=1){
// I frame, sync timestamps:
*kf_base=(int64_t)timestamp-kf;
mp_msg(MSGT_DEMUX, MSGL_DBG2,"\nTS: base=%08"PRIX64"\n",*kf_base);
kf=timestamp;
} else {
// P/B frame, merge timestamps:
int64_t tmp=(int64_t)timestamp-*kf_base;
kf|=tmp&(~0x1fff); // combine with packet timestamp
if(kf<tmp-4096) kf+=8192; else // workaround wrap-around problems
if(kf>tmp+4096) kf-=8192;
kf+=*kf_base;
}
if(pict_type != 3){ // P || I frame -> swap timestamps
unsigned int tmp=kf;
kf=*kf_pts;
*kf_pts=tmp;
// if(kf<=tmp) kf=0;
}
mp_msg(MSGT_DEMUX, MSGL_DBG2,"\nTS: %08X -> %08X (%04X) %d %02X %02X %02X %02X %5u\n",timestamp,kf,orig_kf,pict_type,s[0],s[1],s[2],s[3],pts?kf-(unsigned int)(*pts*1000.0):0);
}
v_pts=kf*0.001f;
// if(pts && (v_pts<*pts || !kf)) v_pts=*pts+frametime;
if(pts) *pts=v_pts;
return v_pts;
}
typedef struct dp_hdr_s {
uint32_t chunks; // number of chunks
uint32_t timestamp; // timestamp from packet header
uint32_t len; // length of actual data
uint32_t chunktab; // offset to chunk offset array
} dp_hdr_t;
static void queue_video_packet(real_priv_t *priv, demux_stream_t *ds, demux_packet_t *dp)
{
dp_hdr_t hdr = *(dp_hdr_t*)dp->buffer;
unsigned char *tmp = malloc(8*(1+hdr.chunks));
memcpy(tmp, dp->buffer+hdr.chunktab, 8*(1+hdr.chunks));
memmove(dp->buffer+1+8*(1+hdr.chunks), dp->buffer+sizeof(dp_hdr_t), hdr.len);
memcpy(dp->buffer+1, tmp, 8*(1+hdr.chunks));
*dp->buffer = (uint8_t)hdr.chunks;
free(tmp);
if(priv->video_after_seek){
priv->kf_base = 0;
priv->kf_pts = hdr.timestamp;
priv->video_after_seek = 0;
}
if(hdr.len >= 3) /* this check may be useless */
dp->pts = real_fix_timestamp(dp->buffer, hdr.timestamp,
((sh_video_t *)ds->sh)->format,
&priv->kf_base, &priv->kf_pts,
&priv->v_pts);
ds_add_packet(ds, dp);
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_real_fill_buffer(demuxer_t *demuxer, demux_stream_t *dsds)
{
real_priv_t *priv = demuxer->priv;
demux_stream_t *ds = NULL;
int len;
unsigned int timestamp;
int stream_id;
#ifdef CRACK_MATRIX
int i;
#endif
int flags;
int version;
int reserved;
demux_packet_t *dp;
int x, sps, cfs, sph, spc, w;
int audioreorder_getnextpk = 0;
// Don't demux video if video codec init failed
if (demuxer->video->id >= 0 && !demuxer->video->sh)
demuxer->video->id = -2;
while(!stream_eof(demuxer->stream)){
/* Handle audio/video demxing switch for multirate files (non-interleaved) */
if (priv->is_multirate && priv->stream_switch) {
if (priv->current_apacket >= priv->index_table_size[demuxer->audio->id])
demuxer->audio->eof = 1;
if (priv->current_vpacket >= priv->index_table_size[demuxer->video->id])
demuxer->video->eof = 1;
if (demuxer->audio->eof && demuxer->video->eof)
return 0;
else if (!demuxer->audio->eof && demuxer->video->eof)
stream_seek(demuxer->stream, priv->audio_curpos); // Get audio
else if (demuxer->audio->eof && !demuxer->video->eof)
stream_seek(demuxer->stream, priv->video_curpos); // Get video
else if (priv->index_table[demuxer->audio->id][priv->current_apacket].timestamp <
priv->index_table[demuxer->video->id][priv->current_vpacket].timestamp)
stream_seek(demuxer->stream, priv->audio_curpos); // Get audio
else
stream_seek(demuxer->stream, priv->video_curpos); // Get video
priv->stream_switch = 0;
}
demuxer->filepos = stream_tell(demuxer->stream);
version = stream_read_word(demuxer->stream); /* version */
len = stream_read_word(demuxer->stream);
if ((version==0x4441) && (len==0x5441)) { // new data chunk
mp_msg(MSGT_DEMUX,MSGL_INFO,"demux_real: New data chunk is coming!!!\n");
if (priv->is_multirate)
return 0; // EOF
stream_skip(demuxer->stream,14);
demuxer->filepos = stream_tell(demuxer->stream);
version = stream_read_word(demuxer->stream); /* version */
len = stream_read_word(demuxer->stream);
} else if ((version == 0x494e) && (len == 0x4458)) {
mp_msg(MSGT_DEMUX,MSGL_V,"demux_real: Found INDX chunk. EOF.\n");
demuxer->stream->eof=1;
return 0;
}
if (len == -256){ /* EOF */
// printf("len==-256!\n");
return 0;
}
if (len < 12){
mp_msg(MSGT_DEMUX, MSGL_V,"%08X: packet v%d len=%d \n",(int)demuxer->filepos,(int)version,(int)len);
mp_msg(MSGT_DEMUX, MSGL_WARN,"bad packet len (%d)\n", len);
if ((unsigned)demuxer->video->id < MAX_STREAMS) {
if (priv->current_vpacket + 1 < priv->index_table_size[demuxer->video->id]) {
stream_seek(demuxer->stream, priv->index_table[demuxer->video->id][++priv->current_vpacket].offset);
}
} else if ((unsigned)demuxer->audio->id < MAX_STREAMS) {
if (priv->current_apacket + 1 < priv->index_table_size[demuxer->audio->id]) {
stream_seek(demuxer->stream, priv->index_table[demuxer->audio->id][++priv->current_apacket].offset);
}
}
continue; //goto loop;
}
stream_id = stream_read_word(demuxer->stream);
timestamp = stream_read_dword(demuxer->stream);
reserved = stream_read_char(demuxer->stream);
flags = stream_read_char(demuxer->stream);
/* flags: */
/* 0x1 - reliable */
/* 0x2 - keyframe */
if (version == 1) {
int tmp;
tmp = stream_read_char(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_DBG2,"Version: %d, skipped byte is %d\n", version, tmp);
len--;
}
if (flags & 2)
add_index_item(demuxer, stream_id, timestamp, demuxer->filepos);
// printf("%08X: packet v%d len=%4d id=%d pts=%6d rvd=%d flags=%d \n",
// (int)demuxer->filepos,(int)version,(int)len, stream_id,
// (int) timestamp, reserved, flags);
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "\npacket#%d: pos: 0x%0x, len: %d, id: %d, pts: %u, flags: %x rvd:%d\n",
priv->current_packet, (int)demuxer->filepos, len, stream_id, timestamp, flags, reserved);
priv->current_packet++;
len -= 12;
// printf("s_id=%d aid=%d vid=%d \n",stream_id,demuxer->audio->id,demuxer->video->id);
/* check stream_id: */
if(demuxer->audio->id==stream_id){
if (priv->audio_need_keyframe == 1&& flags != 0x2)
goto discard;
got_audio:
ds=demuxer->audio;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "packet is audio (id: %d)\n", stream_id);
if (flags & 2) {
priv->sub_packet_cnt = 0;
audioreorder_getnextpk = 0;
}
// parse audio chunk:
{
#ifdef CRACK_MATRIX
int spos=stream_tell(demuxer->stream);
static int cnt=0;
static int cnt2=CRACK_MATRIX;
#endif
if (((sh_audio_t *)ds->sh)->format == mmioFOURCC('M', 'P', '4', 'A')) {
uint16_t sub_packet_lengths[16], sub_packets, i;
int totlen = 0;
/* AAC in Real: several AAC frames in one Real packet. */
/* Second byte, upper four bits: number of AAC frames */
/* next n * 2 bytes: length of the AAC frames in bytes, BE */
if (len < 2)
goto discard;
sub_packets = (stream_read_word(demuxer->stream) & 0xf0) >> 4;
if (len < 2 * sub_packets)
goto discard;
for (i = 0; i < sub_packets; i++)
totlen += sub_packet_lengths[i] = stream_read_word(demuxer->stream);
if (len < totlen )
goto discard;
for (i = 0; i < sub_packets; i++) {
demux_packet_t *dp = new_demux_packet(sub_packet_lengths[i]);
stream_read(demuxer->stream, dp->buffer, sub_packet_lengths[i]);
if (priv->a_pts != timestamp)
dp->pts = timestamp / 1000.0;
priv->a_pts = timestamp;
dp->pos = demuxer->filepos;
ds_add_packet(ds, dp);
}
return 1;
}
if ((priv->intl_id[stream_id] == mmioFOURCC('I', 'n', 't', '4')) ||
(priv->intl_id[stream_id] == mmioFOURCC('g', 'e', 'n', 'r')) ||
(priv->intl_id[stream_id] == mmioFOURCC('s', 'i', 'p', 'r'))) {
sps = priv->sub_packet_size[stream_id];
sph = priv->sub_packet_h[stream_id];
cfs = priv->coded_framesize[stream_id];
w = priv->audiopk_size[stream_id];
spc = priv->sub_packet_cnt;
switch (priv->intl_id[stream_id]) {
case mmioFOURCC('I', 'n', 't', '4'):
if (len < cfs * sph/2)
goto discard;
for (x = 0; x < sph / 2; x++)
stream_read(demuxer->stream, priv->audio_buf + x * 2 * w + spc * cfs, cfs);
break;
case mmioFOURCC('g', 'e', 'n', 'r'):
if (len < w)
goto discard;
for (x = 0; x < w / sps; x++)
stream_read(demuxer->stream, priv->audio_buf + sps * (sph * x + ((sph + 1) / 2) * (spc & 1) +
(spc >> 1)), sps);
break;
case mmioFOURCC('s', 'i', 'p', 'r'):
if (len < w)
goto discard;
stream_read(demuxer->stream, priv->audio_buf + spc * w, w);
if (spc == sph - 1) {
int n;
int bs = sph * w * 2 / 96; // nibbles per subpacket
// Perform reordering
for(n=0; n < 38; n++) {
int j;
int i = bs * sipr_swaps[n][0];
int o = bs * sipr_swaps[n][1];
// swap nibbles of block 'i' with 'o' TODO: optimize
for(j = 0;j < bs; j++) {
int x = (i & 1) ? (priv->audio_buf[i >> 1] >> 4) : (priv->audio_buf[i >> 1] & 0x0F);
int y = (o & 1) ? (priv->audio_buf[o >> 1] >> 4) : (priv->audio_buf[o >> 1] & 0x0F);
if(o & 1)
priv->audio_buf[o >> 1] = (priv->audio_buf[o >> 1] & 0x0F) | (x << 4);
else
priv->audio_buf[o >> 1] = (priv->audio_buf[o >> 1] & 0xF0) | x;
if(i & 1)
priv->audio_buf[i >> 1] = (priv->audio_buf[i >> 1] & 0x0F) | (y << 4);
else
priv->audio_buf[i >> 1] = (priv->audio_buf[i >> 1] & 0xF0) | y;
++i; ++o;
}
}
}
break;
}
priv->audio_need_keyframe = 0;
priv->audio_timestamp[priv->sub_packet_cnt] = (priv->a_pts==timestamp) ? MP_NOPTS_VALUE : (timestamp/1000.0);
priv->a_pts = timestamp;
if (priv->sub_packet_cnt == 0)
priv->audio_filepos = demuxer->filepos;
if (++(priv->sub_packet_cnt) < sph)
audioreorder_getnextpk = 1;
else {
int apk_usize = ((WAVEFORMATEX*)((sh_audio_t*)ds->sh)->wf)->nBlockAlign;
audioreorder_getnextpk = 0;
priv->sub_packet_cnt = 0;
// Release all the audio packets
for (x = 0; x < sph*w/apk_usize; x++) {
dp = new_demux_packet(apk_usize);
memcpy(dp->buffer, priv->audio_buf + x * apk_usize, apk_usize);
/* Put timestamp only on packets that correspond to original audio packets in file */
if (x * apk_usize % w == 0)
dp->pts = priv->audio_timestamp[x * apk_usize / w];
dp->pos = priv->audio_filepos; // all equal
dp->flags = x ? 0 : 0x10; // Mark first packet as keyframe
ds_add_packet(ds, dp);
}
}
} else { // No interleaving
dp = new_demux_packet(len);
stream_read(demuxer->stream, dp->buffer, len);
#ifdef CRACK_MATRIX
mp_msg(MSGT_DEMUX, MSGL_V,"*** audio block len=%d\n",len);
{ // HACK - used for reverse engineering the descrambling matrix
FILE* f=fopen("test.rm","r+");
fseek(f,spos,SEEK_SET);
++cnt;
// for(i=0;i<len;i++) dp->buffer[i]=i/0x12;
// for(i=0;i<len;i++) dp->buffer[i]=i;
// for(i=0;i<len;i++) dp->buffer[i]=cnt;
// for(i=0;i<len;i++) dp->buffer[i]=cnt<<4;
for(i=0;i<len;i++) dp->buffer[i]=(i==cnt2) ? (cnt+16*(8+cnt)) : 0;
if(cnt==6){ cnt=0; ++cnt2; }
fwrite(dp->buffer, len, 1, f);
fclose(f);
if(cnt2>0x150) *((int*)NULL)=1; // sig11 :)
}
#endif
#if 0
if( ((sh_audio_t *)ds->sh)->format == 0x2000) {
// if DNET, swap bytes, as DNET is byte-swapped AC3:
char *ptr = dp->buffer;
int i;
for (i = 0; i < len; i += 2)
{
const char tmp = ptr[0];
ptr[0] = ptr[1];
ptr[1] = tmp;
ptr += 2;
}
}
#endif
if (priv->audio_need_keyframe == 1) {
priv->audio_need_keyframe = 0;
} else if(priv->a_pts != timestamp)
dp->pts = timestamp/1000.0;
priv->a_pts=timestamp;
dp->pos = demuxer->filepos;
dp->flags = (flags & 0x2) ? 0x10 : 0;
ds_add_packet(ds, dp);
} // codec_id check, codec default case
}
// we will not use audio index if we use -idx and have a video
if(((!demuxer->video->sh && index_mode == 2) || priv->is_multirate) && (unsigned)demuxer->audio->id < MAX_STREAMS) {
while (priv->current_apacket + 1 < priv->index_table_size[demuxer->audio->id] &&
timestamp > priv->index_table[demuxer->audio->id][priv->current_apacket].timestamp) {
priv->current_apacket += 1;
priv->stream_switch = 1;
}
if (priv->stream_switch)
priv->audio_curpos = stream_tell(demuxer->stream);
}
// If we're reordering audio packets and we need more data get it
if (audioreorder_getnextpk)
continue;
return 1;
}
if(demuxer->video->id==stream_id){
got_video:
ds=demuxer->video;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "packet is video (id: %d)\n", stream_id);
// parse video chunk:
{
// we need a more complicated, 2nd level demuxing, as the video
// frames are stored fragmented in the video chunks :(
sh_video_t *sh_video = ds->sh;
demux_packet_t *dp;
unsigned vpkg_header, vpkg_length, vpkg_offset;
int vpkg_seqnum=-1;
int vpkg_subseq=0;
while(len>2){
dp_hdr_t* dp_hdr;
unsigned char* dp_data;
uint32_t* extra;
// printf("xxx len=%d \n",len);
// read packet header
// bit 7: 1=last block in block chain
// bit 6: 1=short header (only one block?)
vpkg_header=stream_read_char(demuxer->stream); --len;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "hdr: %02X (len=%d) ",vpkg_header,len);
if (0x40==(vpkg_header&0xc0)) {
// seems to be a very short header
// 2 bytes, purpose of the second byte yet unknown
int bummer;
bummer=stream_read_char(demuxer->stream); --len;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "%02X",bummer);
vpkg_offset=0;
vpkg_length=len;
} else {
if (0==(vpkg_header&0x40)) {
// sub-seqnum (bits 0-6: number of fragment. bit 7: ???)
vpkg_subseq=stream_read_char(demuxer->stream);
--len;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "subseq: %02X ",vpkg_subseq);
vpkg_subseq&=0x7f;
}
// size of the complete packet
// bit 14 is always one (same applies to the offset)
vpkg_length=stream_read_word(demuxer->stream);
len-=2;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "l: %02X %02X ",vpkg_length>>8,vpkg_length&0xff);
if (!(vpkg_length&0xC000)) {
vpkg_length<<=16;
vpkg_length|=(uint16_t)stream_read_word(demuxer->stream);
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "l+: %02X %02X ",(vpkg_length>>8)&0xff,vpkg_length&0xff);
len-=2;
} else
vpkg_length&=0x3fff;
// offset of the following data inside the complete packet
// Note: if (hdr&0xC0)==0x80 then offset is relative to the
// _end_ of the packet, so it's equal to fragment size!!!
vpkg_offset=stream_read_word(demuxer->stream);
len-=2;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "o: %02X %02X ",vpkg_offset>>8,vpkg_offset&0xff);
if (!(vpkg_offset&0xC000)) {
vpkg_offset<<=16;
vpkg_offset|=(uint16_t)stream_read_word(demuxer->stream);
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "o+: %02X %02X ",(vpkg_offset>>8)&0xff,vpkg_offset&0xff);
len-=2;
} else
vpkg_offset&=0x3fff;
vpkg_seqnum=stream_read_char(demuxer->stream); --len;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "seq: %02X ",vpkg_seqnum);
}
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "\n");
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "blklen=%d\n", len);
mp_msg(MSGT_DEMUX,MSGL_DBG2, "block: hdr=0x%0x, len=%d, offset=%d, seqnum=%d\n",
vpkg_header, vpkg_length, vpkg_offset, vpkg_seqnum);
if(ds->asf_packet){
dp=ds->asf_packet;
dp_hdr=(dp_hdr_t*)dp->buffer;
dp_data=dp->buffer+sizeof(dp_hdr_t);
extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "we have an incomplete packet (oldseq=%d new=%d)\n",ds->asf_seq,vpkg_seqnum);
// we have an incomplete packet:
if(ds->asf_seq!=vpkg_seqnum){
// this fragment is for new packet, close the old one
mp_msg(MSGT_DEMUX,MSGL_DBG2, "closing probably incomplete packet, len: %d \n",dp->len);
queue_video_packet(priv, ds, dp);
ds->asf_packet=NULL;
} else {
// append data to it!
++dp_hdr->chunks;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"[chunks=%d subseq=%d]\n",dp_hdr->chunks,vpkg_subseq);
if(dp_hdr->chunktab+8*(1+dp_hdr->chunks)>dp->len){
// increase buffer size, this should not happen!
mp_msg(MSGT_DEMUX,MSGL_WARN, "chunktab buffer too small!!!!!\n");
dp->len=dp_hdr->chunktab+8*(4+dp_hdr->chunks);
dp->buffer=realloc(dp->buffer,dp->len+MP_INPUT_BUFFER_PADDING_SIZE);
memset(dp->buffer + dp->len, 0, MP_INPUT_BUFFER_PADDING_SIZE);
// re-calc pointers:
dp_hdr=(dp_hdr_t*)dp->buffer;
dp_data=dp->buffer+sizeof(dp_hdr_t);
extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
}
extra[2*dp_hdr->chunks+0]=le2me_32(1);
extra[2*dp_hdr->chunks+1]=le2me_32(dp_hdr->len);
if(0x80==(vpkg_header&0xc0)){
// last fragment!
if(dp_hdr->len!=vpkg_length-vpkg_offset)
mp_msg(MSGT_DEMUX,MSGL_V,"warning! assembled.len=%d frag.len=%d total.len=%d \n",dp->len,vpkg_offset,vpkg_length-vpkg_offset);
if (vpkg_offset > dp->len - sizeof(dp_hdr_t) - dp_hdr->len) vpkg_offset = dp->len - sizeof(dp_hdr_t) - dp_hdr->len;
stream_read(demuxer->stream, dp_data+dp_hdr->len, vpkg_offset);
if((dp_data[dp_hdr->len]&0x20) && (sh_video->format==0x30335652)) --dp_hdr->chunks; else
dp_hdr->len+=vpkg_offset;
len-=vpkg_offset;
mp_dbg(MSGT_DEMUX,MSGL_DBG2, "fragment (%d bytes) appended, %d bytes left\n",vpkg_offset,len);
// we know that this is the last fragment -> we can close the packet!
queue_video_packet(priv, ds, dp);
ds->asf_packet=NULL;
// continue parsing
continue;
}
// non-last fragment:
if(dp_hdr->len!=vpkg_offset)
mp_msg(MSGT_DEMUX,MSGL_V,"warning! assembled.len=%d offset=%d frag.len=%d total.len=%d \n",dp->len,vpkg_offset,len,vpkg_length);
if (len > dp->len - sizeof(dp_hdr_t) - dp_hdr->len) len = dp->len - sizeof(dp_hdr_t) - dp_hdr->len;
stream_read(demuxer->stream, dp_data+dp_hdr->len, len);
if((dp_data[dp_hdr->len]&0x20) && (sh_video->format==0x30335652)) --dp_hdr->chunks; else
dp_hdr->len+=len;
len=0;
break; // no more fragments in this chunk!
}
}
// create new packet!
dp = new_demux_packet(sizeof(dp_hdr_t)+vpkg_length+8*(1+2*(vpkg_header&0x3F)));
// the timestamp seems to be in milliseconds
dp->pos = demuxer->filepos;
dp->flags = (flags & 0x2) ? 0x10 : 0;
ds->asf_seq = vpkg_seqnum;
dp_hdr=(dp_hdr_t*)dp->buffer;
dp_hdr->chunks=0;
dp_hdr->timestamp=timestamp;
dp_hdr->chunktab=sizeof(dp_hdr_t)+vpkg_length;
dp_data=dp->buffer+sizeof(dp_hdr_t);
extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
extra[0]=le2me_32(1); extra[1]=0; // offset of the first chunk
if(0x00==(vpkg_header&0xc0)){
// first fragment:
if (len > dp->len - sizeof(dp_hdr_t)) len = dp->len - sizeof(dp_hdr_t);
dp_hdr->len=len;
stream_read(demuxer->stream, dp_data, len);
ds->asf_packet=dp;
len=0;
break;
}
// whole packet (not fragmented):
if (vpkg_length > len) {
mp_msg(MSGT_DEMUX, MSGL_WARN,"\n******** WARNING: vpkg_length=%i > len=%i ********\n", vpkg_length, len);
/*
* To keep the video stream rolling, we need to break
* here. We shouldn't touch len to make sure rest of the
* broken packet is skipped.
*/
break;
}
dp_hdr->len=vpkg_length; len-=vpkg_length;
stream_read(demuxer->stream, dp_data, vpkg_length);
queue_video_packet(priv, ds, dp);
} // while(len>0)
if(len){
mp_msg(MSGT_DEMUX, MSGL_WARN,"\n******** !!!!!!!! BUG!! len=%d !!!!!!!!!!! ********\n",len);
if(len>0) stream_skip(demuxer->stream, len);
}
}
if ((unsigned)demuxer->video->id < MAX_STREAMS) {
while (priv->current_vpacket + 1 < priv->index_table_size[demuxer->video->id] &&
timestamp > priv->index_table[demuxer->video->id][priv->current_vpacket + 1].timestamp) {
priv->current_vpacket += 1;
priv->stream_switch = 1;
}
if (priv->stream_switch)
priv->video_curpos = stream_tell(demuxer->stream);
}
return 1;
}
if((unsigned)stream_id<MAX_STREAMS){
if(demuxer->audio->id==-1 && demuxer->a_streams[stream_id]){
sh_audio_t *sh = demuxer->a_streams[stream_id];
demuxer->audio->id=stream_id;
sh->ds=demuxer->audio;
demuxer->audio->sh=sh;
priv->audio_buf = calloc(priv->sub_packet_h[demuxer->audio->id], priv->audiopk_size[demuxer->audio->id]);
priv->audio_timestamp = calloc(priv->sub_packet_h[demuxer->audio->id], sizeof(double));
mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected RM audio ID = %d\n",stream_id);
goto got_audio;
}
if(demuxer->video->id==-1 && demuxer->v_streams[stream_id]){
sh_video_t *sh = demuxer->v_streams[stream_id];
demuxer->video->id=stream_id;
sh->ds=demuxer->video;
demuxer->video->sh=sh;
mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected RM video ID = %d\n",stream_id);
goto got_video;
}
}
mp_msg(MSGT_DEMUX,MSGL_DBG2, "unknown stream id (%d)\n", stream_id);
discard:
stream_skip(demuxer->stream, len);
}// goto loop;
return 0;
}
static demuxer_t* demux_open_real(demuxer_t* demuxer)
{
real_priv_t* priv = demuxer->priv;
int num_of_headers;
int a_streams=0;
int v_streams=0;
int i;
int header_size;
header_size = stream_read_dword(demuxer->stream); /* header size */
mp_msg(MSGT_DEMUX,MSGL_V, "real: Header size: %d\n", header_size);
i = stream_read_word(demuxer->stream); /* version */
mp_msg(MSGT_DEMUX,MSGL_V, "real: Header object version: %d\n", i);
if (header_size == 0x10)
i = stream_read_word(demuxer->stream);
else /* we should test header_size here too. */
i = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V, "real: File version: %d\n", i);
num_of_headers = stream_read_dword(demuxer->stream);
/* parse chunks */
for (i = 1; i <= num_of_headers; i++)
// for (i = 1; ; i++)
{
int chunk_id, chunk_pos, chunk_size;
chunk_pos = stream_tell(demuxer->stream);
chunk_id = stream_read_dword_le(demuxer->stream);
chunk_size = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 2); /* version */
mp_msg(MSGT_DEMUX,MSGL_V, "Chunk: %.4s (%x) (size: 0x%x, offset: 0x%x)\n",
(char *)&chunk_id, chunk_id, chunk_size, chunk_pos);
if (chunk_id != MKTAG('D', 'A', 'T', 'A') && chunk_size < 10){
mp_msg(MSGT_DEMUX,MSGL_ERR,"demux_real: invalid chunksize! (%d)\n",chunk_size);
break; //return;
}
switch(chunk_id)
{
case MKTAG('P', 'R', 'O', 'P'):
/* Properties header */
stream_skip(demuxer->stream, 4); /* max bitrate */
stream_skip(demuxer->stream, 4); /* avg bitrate */
stream_skip(demuxer->stream, 4); /* max packet size */
stream_skip(demuxer->stream, 4); /* avg packet size */
stream_skip(demuxer->stream, 4); /* nb packets */
priv->duration = stream_read_dword(demuxer->stream)/1000; /* duration */
stream_skip(demuxer->stream, 4); /* preroll */
priv->index_chunk_offset = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"First index chunk offset: 0x%x\n", priv->index_chunk_offset);
priv->data_chunk_offset = stream_read_dword(demuxer->stream)+10;
mp_msg(MSGT_DEMUX,MSGL_V,"First data chunk offset: 0x%x\n", priv->data_chunk_offset);
stream_skip(demuxer->stream, 2); /* nb streams */
#if 0
stream_skip(demuxer->stream, 2); /* flags */
#else
{
int flags = stream_read_word(demuxer->stream);
if (flags)
{
mp_msg(MSGT_DEMUX,MSGL_V,"Flags (%x): ", flags);
if (flags & 0x1)
mp_msg(MSGT_DEMUX,MSGL_V,"[save allowed] ");
if (flags & 0x2)
mp_msg(MSGT_DEMUX,MSGL_V,"[perfect play (more buffers)] ");
if (flags & 0x4)
mp_msg(MSGT_DEMUX,MSGL_V,"[live broadcast] ");
mp_msg(MSGT_DEMUX,MSGL_V,"\n");
}
}
#endif
break;
case MKTAG('C', 'O', 'N', 'T'):
{
/* Content description header */
char *buf;
int len;
len = stream_read_word(demuxer->stream);
if (len > 0)
{
buf = malloc(len+1);
stream_read(demuxer->stream, buf, len);
buf[len] = 0;
demux_info_add(demuxer, "title", buf);
free(buf);
}
len = stream_read_word(demuxer->stream);
if (len > 0)
{
buf = malloc(len+1);
stream_read(demuxer->stream, buf, len);
buf[len] = 0;
demux_info_add(demuxer, "author", buf);
free(buf);
}
len = stream_read_word(demuxer->stream);
if (len > 0)
{
buf = malloc(len+1);
stream_read(demuxer->stream, buf, len);
buf[len] = 0;
demux_info_add(demuxer, "copyright", buf);
free(buf);
}
len = stream_read_word(demuxer->stream);
if (len > 0)
{
buf = malloc(len+1);
stream_read(demuxer->stream, buf, len);
buf[len] = 0;
demux_info_add(demuxer, "comment", buf);
free(buf);
}
break;
}
case MKTAG('M', 'D', 'P', 'R'):
{
/* Media properties header */
int stream_id;
int bitrate;
int codec_data_size;
int codec_pos;
int tmp;
int len;
char *descr, *mimet = NULL;
stream_id = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"Found new stream (id: %d)\n", stream_id);
stream_skip(demuxer->stream, 4); /* max bitrate */
bitrate = stream_read_dword(demuxer->stream); /* avg bitrate */
stream_skip(demuxer->stream, 4); /* max packet size */
stream_skip(demuxer->stream, 4); /* avg packet size */
stream_skip(demuxer->stream, 4); /* start time */
stream_skip(demuxer->stream, 4); /* preroll */
stream_skip(demuxer->stream, 4); /* duration */
if ((len = stream_read_char(demuxer->stream)) > 0) {
descr = malloc(len+1);
stream_read(demuxer->stream, descr, len);
descr[len] = 0;
mp_msg(MSGT_DEMUX, MSGL_INFO,"Stream description: %s\n", descr);
free(descr);
}
if ((len = stream_read_char(demuxer->stream)) > 0) {
mimet = malloc(len+1);
stream_read(demuxer->stream, mimet, len);
mimet[len] = 0;
mp_msg(MSGT_DEMUX, MSGL_INFO,"Stream mimetype: %s\n", mimet);
}
/* Type specific header */
codec_data_size = stream_read_dword(demuxer->stream);
codec_pos = stream_tell(demuxer->stream);
#ifdef MP_DEBUG
#define stream_skip(st,siz) { int i; for(i=0;i<siz;i++) mp_msg(MSGT_DEMUX,MSGL_V," %02X",stream_read_char(st)); mp_msg(MSGT_DEMUX,MSGL_V,"\n");}
#endif
if (!strncmp(mimet,"audio/",6)) {
if (strstr(mimet,"x-pn-realaudio") || strstr(mimet,"x-pn-multirate-realaudio")) {
tmp = stream_read_dword(demuxer->stream);
if (tmp != MKTAG(0xfd, 'a', 'r', '.'))
{
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: can't find .ra in codec data\n");
} else {
/* audio header */
sh_audio_t *sh = new_sh_audio(demuxer, stream_id);
char buf[128]; /* for codec name */
int frame_size;
int sub_packet_size;
int sub_packet_h;
int version;
int flavor;
int coded_frame_size;
int codecdata_length;
int i;
char *buft;
int hdr_size;
mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "real", stream_id);
mp_msg(MSGT_DEMUX,MSGL_V,"Found audio stream!\n");
version = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"version: %d\n", version);
if (version == 3) {
stream_skip(demuxer->stream, 2);
stream_skip(demuxer->stream, 10);
stream_skip(demuxer->stream, 4);
// Name, author, (c) are also in CONT tag
if ((i = stream_read_char(demuxer->stream)) != 0) {
buft = malloc(i+1);
stream_read(demuxer->stream, buft, i);
buft[i] = 0;
demux_info_add(demuxer, "Name", buft);
free(buft);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buft = malloc(i+1);
stream_read(demuxer->stream, buft, i);
buft[i] = 0;
demux_info_add(demuxer, "Author", buft);
free(buft);
}
if ((i = stream_read_char(demuxer->stream)) != 0) {
buft = malloc(i+1);
stream_read(demuxer->stream, buft, i);
buft[i] = 0;
demux_info_add(demuxer, "Copyright", buft);
free(buft);
}
if ((i = stream_read_char(demuxer->stream)) != 0)
mp_msg(MSGT_DEMUX,MSGL_WARN,"Last header byte is not zero!\n");
stream_skip(demuxer->stream, 1);
i = stream_read_char(demuxer->stream);
sh->format = stream_read_dword_le(demuxer->stream);
if (i != 4) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"Audio FourCC size is not 4 (%d), please report to "
"MPlayer developers\n", i);
stream_skip(demuxer->stream, i - 4);
}
if (sh->format != mmioFOURCC('l','p','c','J')) {
mp_msg(MSGT_DEMUX,MSGL_WARN,"Version 3 audio with FourCC %8x, please report to "
"MPlayer developers\n", sh->format);
}
sh->channels = 1;
sh->samplesize = 16;
sh->samplerate = 8000;
frame_size = 240;
strcpy(buf, "14_4");
} else {
stream_skip(demuxer->stream, 2); // 00 00
stream_skip(demuxer->stream, 4); /* .ra4 or .ra5 */
stream_skip(demuxer->stream, 4); // ???
stream_skip(demuxer->stream, 2); /* version (4 or 5) */
hdr_size = stream_read_dword(demuxer->stream); // header size
mp_msg(MSGT_DEMUX,MSGL_V,"header size: %d\n", hdr_size);
flavor = stream_read_word(demuxer->stream);/* codec flavor id */
coded_frame_size = stream_read_dword(demuxer->stream);/* needed by codec */
mp_msg(MSGT_DEMUX,MSGL_V,"coded_frame_size: %d\n", coded_frame_size);
stream_skip(demuxer->stream, 4); // big number
stream_skip(demuxer->stream, 4); // bigger number
stream_skip(demuxer->stream, 4); // 2 || -''-
sub_packet_h = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"sub_packet_h: %d\n", sub_packet_h);
frame_size = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"frame_size: %d\n", frame_size);
sub_packet_size = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"sub_packet_size: %d\n", sub_packet_size);
stream_skip(demuxer->stream, 2); // 0
if (version == 5)
stream_skip(demuxer->stream, 6); //0,srate,0
sh->samplerate = stream_read_word(demuxer->stream);
stream_skip(demuxer->stream, 2); // 0
sh->samplesize = stream_read_word(demuxer->stream)/8;
sh->channels = stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"samplerate: %d, channels: %d\n",
sh->samplerate, sh->channels);
if (version == 5)
{
stream_read(demuxer->stream, buf, 4); // interleaver id
priv->intl_id[stream_id] = MKTAG(buf[0], buf[1], buf[2], buf[3]);
stream_read(demuxer->stream, buf, 4); // fourcc
buf[4] = 0;
}
else
{
/* Interleaver id */
get_str(1, demuxer, buf, sizeof(buf));
priv->intl_id[stream_id] = MKTAG(buf[0], buf[1], buf[2], buf[3]);
/* Codec FourCC */
get_str(1, demuxer, buf, sizeof(buf));
}
}
/* Emulate WAVEFORMATEX struct: */
sh->wf = malloc(sizeof(WAVEFORMATEX));
memset(sh->wf, 0, sizeof(WAVEFORMATEX));
sh->wf->nChannels = sh->channels;
sh->wf->wBitsPerSample = sh->samplesize*8;
sh->wf->nSamplesPerSec = sh->samplerate;
sh->wf->nAvgBytesPerSec = bitrate/8;
sh->wf->nBlockAlign = frame_size;
sh->wf->cbSize = 0;
sh->format = MKTAG(buf[0], buf[1], buf[2], buf[3]);
switch (sh->format)
{
case MKTAG('d', 'n', 'e', 't'):
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: DNET -> AC3\n");
// sh->format = 0x2000;
break;
case MKTAG('1', '4', '_', '4'):
sh->wf->nBlockAlign = 0x14;
break;
case MKTAG('2', '8', '_', '8'):
sh->wf->nBlockAlign = coded_frame_size;
break;
case MKTAG('s', 'i', 'p', 'r'):
case MKTAG('a', 't', 'r', 'c'):
case MKTAG('c', 'o', 'o', 'k'):
// realaudio codec plugins - common:
stream_skip(demuxer->stream,3); // Skip 3 unknown bytes
if (version==5)
stream_skip(demuxer->stream,1); // Skip 1 additional unknown byte
codecdata_length=stream_read_dword(demuxer->stream);
// Check extradata len, we can't store bigger values in cbSize anyway
if ((unsigned)codecdata_length > 0xffff) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Extradata too big (%d)\n", codecdata_length);
goto skip_this_chunk;
}
sh->wf->cbSize = codecdata_length;
sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
stream_read(demuxer->stream, ((char*)(sh->wf+1)), codecdata_length); // extras
if (priv->intl_id[stream_id] == MKTAG('g', 'e', 'n', 'r'))
sh->wf->nBlockAlign = sub_packet_size;
else
sh->wf->nBlockAlign = coded_frame_size;
break;
case MKTAG('r', 'a', 'a', 'c'):
case MKTAG('r', 'a', 'c', 'p'):
/* This is just AAC. The two or five bytes of */
/* config data needed for libfaad are stored */
/* after the audio headers. */
stream_skip(demuxer->stream,3); // Skip 3 unknown bytes
if (version==5)
stream_skip(demuxer->stream,1); // Skip 1 additional unknown byte
codecdata_length=stream_read_dword(demuxer->stream);
if (codecdata_length>=1) {
sh->codecdata_len = codecdata_length - 1;
sh->codecdata = calloc(sh->codecdata_len, 1);
stream_skip(demuxer->stream, 1);
stream_read(demuxer->stream, sh->codecdata, sh->codecdata_len);
}
sh->format = mmioFOURCC('M', 'P', '4', 'A');
break;
default:
mp_msg(MSGT_DEMUX,MSGL_V,"Audio: Unknown (%s)\n", buf);
}
// Interleaver setup
priv->sub_packet_size[stream_id] = sub_packet_size;
priv->sub_packet_h[stream_id] = sub_packet_h;
priv->coded_framesize[stream_id] = coded_frame_size;
priv->audiopk_size[stream_id] = frame_size;
sh->wf->wFormatTag = sh->format;
mp_msg(MSGT_DEMUX,MSGL_V,"audio fourcc: %.4s (%x)\n", (char *)&sh->format, sh->format);
if ( mp_msg_test(MSGT_DEMUX,MSGL_V) )
print_wave_header(sh->wf, MSGL_V);
/* Select audio stream with highest bitrate if multirate file*/
if (priv->is_multirate && ((demuxer->audio->id == -1) ||
((demuxer->audio->id >= 0) && priv->a_bitrate && (bitrate > priv->a_bitrate)))) {
demuxer->audio->id = stream_id;
priv->a_bitrate = bitrate;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"Multirate autoselected audio id %d with bitrate %d\n", stream_id, bitrate);
}
if(demuxer->audio->id==stream_id){
sh->ds=demuxer->audio;
demuxer->audio->sh=sh;
priv->audio_buf = calloc(priv->sub_packet_h[demuxer->audio->id], priv->audiopk_size[demuxer->audio->id]);
priv->audio_timestamp = calloc(priv->sub_packet_h[demuxer->audio->id], sizeof(double));
}
++a_streams;
#ifdef stream_skip
#undef stream_skip
#endif
}
} else if (strstr(mimet,"X-MP3-draft-00")) {
sh_audio_t *sh = new_sh_audio(demuxer, stream_id);
mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "real", stream_id);
/* Emulate WAVEFORMATEX struct: */
sh->wf = malloc(sizeof(WAVEFORMATEX));
memset(sh->wf, 0, sizeof(WAVEFORMATEX));
sh->wf->nChannels = 0;//sh->channels;
sh->wf->wBitsPerSample = 16;
sh->wf->nSamplesPerSec = 0;//sh->samplerate;
sh->wf->nAvgBytesPerSec = 0;//bitrate;
sh->wf->nBlockAlign = 0;//frame_size;
sh->wf->cbSize = 0;
sh->wf->wFormatTag = sh->format = mmioFOURCC('a','d','u',0x55);
if(demuxer->audio->id==stream_id){
sh->ds=demuxer->audio;
demuxer->audio->sh=sh;
}
++a_streams;
} else if (strstr(mimet,"x-ralf-mpeg4")) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Real lossless audio not supported yet\n");
} else if (strstr(mimet,"x-pn-encrypted-ra")) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Encrypted audio is not supported\n");
} else {
mp_msg(MSGT_DEMUX,MSGL_V,"Unknown audio stream format\n");
}
} else if (!strncmp(mimet,"video/",6)) {
if (strstr(mimet,"x-pn-realvideo") || strstr(mimet,"x-pn-multirate-realvideo")) {
stream_skip(demuxer->stream, 4); // VIDO length, same as codec_data_size
tmp = stream_read_dword(demuxer->stream);
if(tmp != MKTAG('O', 'D', 'I', 'V'))
{
mp_msg(MSGT_DEMUX,MSGL_V,"Video: can't find VIDO in codec data\n");
} else {
/* video header */
sh_video_t *sh = new_sh_video(demuxer, stream_id);
mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_VideoID, "real", stream_id);
sh->format = stream_read_dword_le(demuxer->stream); /* fourcc */
mp_msg(MSGT_DEMUX,MSGL_V,"video fourcc: %.4s (%x)\n", (char *)&sh->format, sh->format);
/* emulate BITMAPINFOHEADER */
sh->bih = malloc(sizeof(BITMAPINFOHEADER));
memset(sh->bih, 0, sizeof(BITMAPINFOHEADER));
sh->bih->biSize = sizeof(BITMAPINFOHEADER);
sh->disp_w = sh->bih->biWidth = stream_read_word(demuxer->stream);
sh->disp_h = sh->bih->biHeight = stream_read_word(demuxer->stream);
sh->bih->biPlanes = 1;
sh->bih->biBitCount = 24;
sh->bih->biCompression = sh->format;
sh->bih->biSizeImage= sh->bih->biWidth*sh->bih->biHeight*3;
sh->fps = (float) stream_read_word(demuxer->stream);
if (sh->fps<=0) sh->fps=24; // we probably won't even care about fps
sh->frametime = 1.0f/sh->fps;
#if 1
stream_skip(demuxer->stream, 4);
#else
mp_msg(MSGT_DEMUX, MSGL_V,"unknown1: 0x%X \n",stream_read_dword(demuxer->stream));
mp_msg(MSGT_DEMUX, MSGL_V,"unknown2: 0x%X \n",stream_read_word(demuxer->stream));
mp_msg(MSGT_DEMUX, MSGL_V,"unknown3: 0x%X \n",stream_read_word(demuxer->stream));
#endif
// if(sh->format==0x30335652 || sh->format==0x30325652 )
if(1)
{
int tmp=stream_read_word(demuxer->stream);
if(tmp>0){
sh->fps=tmp; sh->frametime = 1.0f/sh->fps;
}
} else {
int fps=stream_read_word(demuxer->stream);
mp_msg(MSGT_DEMUX, MSGL_WARN,"realvid: ignoring FPS = %d\n",fps);
}
stream_skip(demuxer->stream, 2);
{
// read and store codec extradata
unsigned int cnt = codec_data_size - (stream_tell(demuxer->stream) - codec_pos);
if (cnt > 0x7fffffff - sizeof(BITMAPINFOHEADER)) {
mp_msg(MSGT_DEMUX, MSGL_ERR,"Extradata too big (%u)\n", cnt);
} else {
sh->bih = realloc(sh->bih, sizeof(BITMAPINFOHEADER) + cnt);
sh->bih->biSize += cnt;
stream_read(demuxer->stream, ((unsigned char*)(sh->bih+1)), cnt);
}
}
if(sh->format == 0x30315652 && ((unsigned char*)(sh->bih+1))[6] == 0x30)
sh->bih->biCompression = sh->format = mmioFOURCC('R', 'V', '1', '3');
/* Select video stream with highest bitrate if multirate file*/
if (priv->is_multirate && ((demuxer->video->id == -1) ||
((demuxer->video->id >= 0) && priv->v_bitrate && (bitrate > priv->v_bitrate)))) {
demuxer->video->id = stream_id;
priv->v_bitrate = bitrate;
mp_msg(MSGT_DEMUX,MSGL_DBG2,"Multirate autoselected video id %d with bitrate %d\n", stream_id, bitrate);
}
if(demuxer->video->id==stream_id){
sh->ds=demuxer->video;
demuxer->video->sh=sh;
}
++v_streams;
}
} else {
mp_msg(MSGT_DEMUX,MSGL_V,"Unknown video stream format\n");
}
} else if (strstr(mimet,"logical-")) {
if (strstr(mimet,"fileinfo")) {
mp_msg(MSGT_DEMUX,MSGL_V,"Got a logical-fileinfo chunk\n");
} else if (strstr(mimet,"-audio") || strstr(mimet,"-video")) {
int i, stream_cnt;
int stream_list[MAX_STREAMS];
priv->is_multirate = 1;
stream_skip(demuxer->stream, 4); // Length of codec data (repeated)
stream_cnt = stream_read_dword(demuxer->stream); // Get number of audio or video streams
if ((unsigned)stream_cnt >= MAX_STREAMS) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Too many streams in %s. Big troubles ahead.\n", mimet);
goto skip_this_chunk;
}
for (i = 0; i < stream_cnt; i++)
stream_list[i] = stream_read_word(demuxer->stream);
for (i = 0; i < stream_cnt; i++)
if ((unsigned)stream_list[i] >= MAX_STREAMS) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Stream id out of range: %d. Ignored.\n", stream_list[i]);
stream_skip(demuxer->stream, 4); // Skip DATA offset for broken stream
} else {
priv->str_data_offset[stream_list[i]] = stream_read_dword(demuxer->stream);
mp_msg(MSGT_DEMUX,MSGL_V,"Stream %d with DATA offset 0x%08x\n", stream_list[i], priv->str_data_offset[stream_list[i]]);
}
// Skip the rest of this chunk
} else
mp_msg(MSGT_DEMUX,MSGL_V,"Unknown logical stream\n");
}
else {
mp_msg(MSGT_DEMUX, MSGL_ERR, "Not audio/video stream or unsupported!\n");
}
// break;
// default:
skip_this_chunk:
/* skip codec info */
tmp = stream_tell(demuxer->stream) - codec_pos;
mp_msg(MSGT_DEMUX,MSGL_V,"### skipping %d bytes of codec info\n", codec_data_size - tmp);
#if 0
{ int i;
for(i=0;i<codec_data_size - tmp;i++)
mp_msg(MSGT_DEMUX, MSGL_V," %02X",stream_read_char(demuxer->stream));
mp_msg(MSGT_DEMUX, MSGL_V,"\n");
}
#else
stream_skip(demuxer->stream, codec_data_size - tmp);
#endif
if (mimet)
free (mimet);
break;
// }
}
case MKTAG('D', 'A', 'T', 'A'):
goto header_end;
case MKTAG('I', 'N', 'D', 'X'):
default:
mp_msg(MSGT_DEMUX,MSGL_V,"Unknown chunk: %x\n", chunk_id);
stream_skip(demuxer->stream, chunk_size - 10);
break;
}
}
header_end:
if(priv->is_multirate) {
mp_msg(MSGT_DEMUX,MSGL_V,"Selected video id %d audio id %d\n", demuxer->video->id, demuxer->audio->id);
/* Perform some sanity checks to avoid checking streams id all over the code*/
if (demuxer->audio->id >= MAX_STREAMS) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Invalid audio stream %d. No sound will be played.\n", demuxer->audio->id);
demuxer->audio->id = -2;
} else if ((demuxer->audio->id >= 0) && (priv->str_data_offset[demuxer->audio->id] == 0)) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Audio stream %d not found. No sound will be played.\n", demuxer->audio->id);
demuxer->audio->id = -2;
}
if (demuxer->video->id >= MAX_STREAMS) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Invalid video stream %d. No video will be played.\n", demuxer->video->id);
demuxer->video->id = -2;
} else if ((demuxer->video->id >= 0) && (priv->str_data_offset[demuxer->video->id] == 0)) {
mp_msg(MSGT_DEMUX,MSGL_ERR,"Video stream %d not found. No video will be played.\n", demuxer->video->id);
demuxer->video->id = -2;
}
}
if(priv->is_multirate && ((demuxer->video->id >= 0) || (demuxer->audio->id >=0))) {
/* If audio or video only, seek to right place and behave like standard file */
if (demuxer->video->id < 0) {
// Stream is audio only, or -novideo
stream_seek(demuxer->stream, priv->data_chunk_offset = priv->str_data_offset[demuxer->audio->id]+10);
priv->is_multirate = 0;
}
if (demuxer->audio->id < 0) {
// Stream is video only, or -nosound
stream_seek(demuxer->stream, priv->data_chunk_offset = priv->str_data_offset[demuxer->video->id]+10);
priv->is_multirate = 0;
}
}
if(!priv->is_multirate) {
// printf("i=%d num_of_headers=%d \n",i,num_of_headers);
priv->num_of_packets = stream_read_dword(demuxer->stream);
stream_skip(demuxer->stream, 4); /* next data header */
mp_msg(MSGT_DEMUX,MSGL_V,"Packets in file: %d\n", priv->num_of_packets);
if (priv->num_of_packets == 0)
priv->num_of_packets = -10;
} else {
priv->audio_curpos = priv->str_data_offset[demuxer->audio->id] + 18;
stream_seek(demuxer->stream, priv->str_data_offset[demuxer->audio->id]+10);
priv->a_num_of_packets=priv->a_num_of_packets = stream_read_dword(demuxer->stream);
priv->video_curpos = priv->str_data_offset[demuxer->video->id] + 18;
stream_seek(demuxer->stream, priv->str_data_offset[demuxer->video->id]+10);
priv->v_num_of_packets = stream_read_dword(demuxer->stream);
priv->stream_switch = 1;
/* Index required for multirate playback, force building if it's not there */
/* but respect user request to force index regeneration */
if (index_mode == -1)
index_mode = 1;
}
priv->audio_need_keyframe = 0;
priv->video_after_seek = 0;
switch (index_mode){
case -1: // untouched
if (priv->index_chunk_offset && parse_index_chunk(demuxer))
{
demuxer->seekable = 1;
}
break;
case 1: // use (generate index)
if (priv->index_chunk_offset && parse_index_chunk(demuxer))
{
demuxer->seekable = 1;
} else {
generate_index(demuxer);
demuxer->seekable = 1;
}
break;
case 2: // force generating index
generate_index(demuxer);
demuxer->seekable = 1;
break;
default: // do nothing
break;
}
// detect streams:
if(demuxer->video->id==-1 && v_streams>0){
// find the valid video stream:
if(!ds_fill_buffer(demuxer->video)){
mp_msg(MSGT_DEMUXER,MSGL_INFO,"RM: " MSGTR_MissingVideoStream);
}
}
if(demuxer->audio->id==-1 && a_streams>0){
// find the valid audio stream:
if(!ds_fill_buffer(demuxer->audio)){
mp_msg(MSGT_DEMUXER,MSGL_INFO,"RM: " MSGTR_MissingAudioStream);
}
}
if(demuxer->video->sh){
sh_video_t *sh=demuxer->video->sh;
mp_msg(MSGT_DEMUX,MSGL_V,"VIDEO: %.4s [%08X,%08X] %dx%d (aspect %4.2f) %4.2f fps\n",
(char *)&sh->format,((unsigned int*)(sh->bih+1))[1],((unsigned int*)(sh->bih+1))[0],
sh->disp_w,sh->disp_h,sh->aspect,sh->fps);
}
if(demuxer->audio->sh){
sh_audio_t *sh=demuxer->audio->sh;
mp_msg(MSGT_DEMUX,MSGL_V,"AUDIO: %.4s [%08X]\n",
(char *)&sh->format,sh->format);
}
return demuxer;
}
static void demux_close_real(demuxer_t *demuxer)
{
int i;
real_priv_t* priv = demuxer->priv;
if (priv){
for(i=0; i<MAX_STREAMS; i++)
if(priv->index_table[i])
free(priv->index_table[i]);
if (priv->audio_buf)
free(priv->audio_buf);
if (priv->audio_timestamp)
free(priv->audio_timestamp);
free(priv);
}
return;
}
/* please upload RV10 samples WITH INDEX CHUNK */
static void demux_seek_real(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
{
real_priv_t *priv = demuxer->priv;
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;
int vid = d_video->id, aid = d_audio->id;
int next_offset = 0;
int64_t cur_timestamp = 0;
int streams = 0;
int retried = 0;
if (sh_video && (unsigned)vid < MAX_STREAMS && priv->index_table_size[vid])
streams |= 1;
if (sh_audio && (unsigned)aid < MAX_STREAMS && priv->index_table_size[aid])
streams |= 2;
// printf("streams: %d\n", streams);
if (!streams)
return;
if (flags & SEEK_ABSOLUTE)
priv->current_apacket = priv->current_vpacket = 0;
if (flags & SEEK_FACTOR)
rel_seek_secs *= priv->duration;
if ((streams & 1) && priv->current_vpacket >= priv->index_table_size[vid])
priv->current_vpacket = priv->index_table_size[vid] - 1;
if ((streams & 2) && priv->current_apacket >= priv->index_table_size[aid])
priv->current_apacket = priv->index_table_size[aid] - 1;
// if (index_mode == 1 || index_mode == 2) {
if (streams & 1) {// use the video index if we have one
cur_timestamp = priv->index_table[vid][priv->current_vpacket].timestamp;
if (rel_seek_secs > 0)
while ((priv->index_table[vid][priv->current_vpacket].timestamp - cur_timestamp) < rel_seek_secs * 1000){
priv->current_vpacket += 1;
if (priv->current_vpacket >= priv->index_table_size[vid]) {
priv->current_vpacket = priv->index_table_size[vid] - 1;
if (!retried) {
stream_seek(demuxer->stream, priv->index_table[vid][priv->current_vpacket].offset);
add_index_segment(demuxer, vid, cur_timestamp + rel_seek_secs * 1000);
retried = 1;
}
else
break;
}
}
else if (rel_seek_secs < 0) {
while ((cur_timestamp - priv->index_table[vid][priv->current_vpacket].timestamp) < - rel_seek_secs * 1000){
priv->current_vpacket -= 1;
if (priv->current_vpacket < 0) {
priv->current_vpacket = 0;
break;
}
}
}
priv->video_curpos = priv->index_table[vid][priv->current_vpacket].offset;
priv->audio_need_keyframe = !priv->is_multirate;
priv->video_after_seek = 1;
}
if (streams & 2) {
if (!(streams & 1)) {
cur_timestamp =
priv->index_table[aid][priv->current_apacket].timestamp;
}
if (rel_seek_secs > 0)
while ((priv->index_table[aid][priv->current_apacket].timestamp - cur_timestamp) < rel_seek_secs * 1000){
priv->current_apacket += 1;
if (priv->current_apacket >= priv->index_table_size[aid]) {
priv->current_apacket = priv->index_table_size[aid] - 1;
break;
}
}
else if (rel_seek_secs < 0)
while ((cur_timestamp - priv->index_table[aid][priv->current_apacket].timestamp) < - rel_seek_secs * 1000){
priv->current_apacket -= 1;
if (priv->current_apacket < 0) {
priv->current_apacket = 0;
break;
}
}
priv->audio_curpos = priv->index_table[aid][priv->current_apacket].offset;
}
// }
next_offset = streams & 1 ? priv->video_curpos : priv->audio_curpos;
// printf("seek: pos: %d, current packets: a: %d, v: %d\n",
// next_offset, priv->current_apacket, priv->current_vpacket);
if (next_offset)
stream_seek(demuxer->stream, next_offset);
demux_real_fill_buffer(demuxer, NULL);
}
static int demux_real_control(demuxer_t *demuxer, int cmd, void *arg)
{
real_priv_t *priv = demuxer->priv;
unsigned int lastpts = priv->v_pts ? priv->v_pts : priv->a_pts;
switch (cmd) {
case DEMUXER_CTRL_GET_TIME_LENGTH:
if (priv->duration == 0)
return DEMUXER_CTRL_DONTKNOW;
*((double *)arg) = (double)priv->duration;
return DEMUXER_CTRL_OK;
case DEMUXER_CTRL_GET_PERCENT_POS:
if (priv->duration == 0)
return DEMUXER_CTRL_DONTKNOW;
*((int *)arg) = (int)(100 * lastpts / priv->duration);
return DEMUXER_CTRL_OK;
default:
return DEMUXER_CTRL_NOTIMPL;
}
}
const demuxer_desc_t demuxer_desc_real = {
"Realmedia demuxer",
"real",
"REAL",
"Alex Beregszasi, Florian Schneider, A'rpi, Roberto Togni",
"handles new .RMF files",
DEMUXER_TYPE_REAL,
1, // safe autodetect
real_check_file,
demux_real_fill_buffer,
demux_open_real,
demux_close_real,
demux_seek_real,
demux_real_control
};
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