1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* 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 "config.h"
#include <stdlib.h>
#include <stdio.h>
#include "libavutil/common.h"
#include "ffmpeg_files/intreadwrite.h"
#include "mpbswap.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "libmpcodecs/vqf.h"
static int demux_probe_vqf(demuxer_t* demuxer)
{
char buf[KEYWORD_BYTES];
stream_t *s;
s = demuxer->stream;
if(stream_read(s,buf,KEYWORD_BYTES)!=KEYWORD_BYTES)
return 0;
if(memcmp(buf,"TWIN",KEYWORD_BYTES)==0) return DEMUXER_TYPE_VQF; /*version: 97012000*/
return 0;
}
static demuxer_t* demux_open_vqf(demuxer_t* demuxer) {
sh_audio_t* sh_audio;
WAVEFORMATEX* w;
stream_t *s;
headerInfo *hi;
s = demuxer->stream;
sh_audio = new_sh_audio(demuxer,0);
sh_audio->wf = w = calloc(1, sizeof(*sh_audio->wf)+sizeof(headerInfo));
hi = (headerInfo *)&w[1];
w->wFormatTag = 0x1;
sh_audio->format = mmioFOURCC('T','W','I','N'); /* TWinVQ */
w->nChannels = sh_audio->channels = 2;
w->nSamplesPerSec = sh_audio->samplerate = 44100;
w->nAvgBytesPerSec = w->nSamplesPerSec*sh_audio->channels*2;
w->nBlockAlign = 0;
sh_audio->samplesize = 2;
w->wBitsPerSample = 8*sh_audio->samplesize;
w->cbSize = 0;
strcpy(hi->ID,"TWIN");
stream_read(s,hi->ID+KEYWORD_BYTES,VERSION_BYTES); /* fourcc+version_id */
while(1)
{
char chunk_id[4];
unsigned chunk_size;
hi->size=chunk_size=stream_read_dword(s); /* include itself */
stream_read(s,chunk_id,4);
if (chunk_size < 8) return NULL;
chunk_size -= 8;
if(AV_RL32(chunk_id)==mmioFOURCC('C','O','M','M'))
{
char buf[BUFSIZ];
unsigned i,subchunk_size;
if (chunk_size > sizeof(buf) || chunk_size < 20) return NULL;
if(stream_read(s,buf,chunk_size)!=chunk_size) return NULL;
i=0;
subchunk_size = AV_RB32(buf);
hi->channelMode = AV_RB32(buf + 4);
w->nChannels=sh_audio->channels=hi->channelMode+1; /*0-mono;1-stereo*/
hi->bitRate = AV_RB32(buf + 8);
sh_audio->i_bps=hi->bitRate*1000/8; /* bitrate kbit/s */
w->nAvgBytesPerSec = sh_audio->i_bps;
hi->samplingRate = AV_RB32(buf + 12);
switch(hi->samplingRate){
case 44:
w->nSamplesPerSec=44100;
break;
case 22:
w->nSamplesPerSec=22050;
break;
case 11:
w->nSamplesPerSec=11025;
break;
default:
w->nSamplesPerSec=hi->samplingRate*1000;
break;
}
sh_audio->samplerate=w->nSamplesPerSec;
hi->securityLevel = AV_RB32(buf + 16);
w->nBlockAlign = 0;
sh_audio->samplesize = 4;
w->wBitsPerSample = 8*sh_audio->samplesize;
w->cbSize = 0;
if (subchunk_size > chunk_size - 4) continue;
i+=subchunk_size+4;
while(i + 8 < chunk_size)
{
unsigned slen,sid;
char sdata[BUFSIZ];
sid = AV_RL32(buf + i); i+=4;
slen = AV_RB32(buf + i); i+=4;
if (slen > sizeof(sdata) - 1 || slen > chunk_size - i) break;
if(sid==mmioFOURCC('D','S','I','Z'))
{
hi->Dsiz=AV_RB32(buf + i);
continue; /* describes the same info as size of DATA chunk */
}
memcpy(sdata,&buf[i],slen); sdata[slen]=0; i+=slen;
if(sid==mmioFOURCC('N','A','M','E'))
{
memcpy(hi->Name,sdata,FFMIN(BUFSIZ,slen));
demux_info_add(demuxer,"Title",sdata);
}
else
if(sid==mmioFOURCC('A','U','T','H'))
{
memcpy(hi->Auth,sdata,FFMIN(BUFSIZ,slen));
demux_info_add(demuxer,"Author",sdata);
}
else
if(sid==mmioFOURCC('C','O','M','T'))
{
memcpy(hi->Comt,sdata,FFMIN(BUFSIZ,slen));
demux_info_add(demuxer,"Comment",sdata);
}
else
if(sid==mmioFOURCC('(','c',')',' '))
{
memcpy(hi->Cpyr,sdata,FFMIN(BUFSIZ,slen));
demux_info_add(demuxer,"Copyright",sdata);
}
else
if(sid==mmioFOURCC('F','I','L','E'))
{
memcpy(hi->File,sdata,FFMIN(BUFSIZ,slen));
}
else
if(sid==mmioFOURCC('A','L','B','M')) demux_info_add(demuxer,"Album",sdata);
else
if(sid==mmioFOURCC('Y','E','A','R')) demux_info_add(demuxer,"Date",sdata);
else
if(sid==mmioFOURCC('T','R','A','C')) demux_info_add(demuxer,"Track",sdata);
else
if(sid==mmioFOURCC('E','N','C','D')) demux_info_add(demuxer,"Encoder",sdata);
else
mp_msg(MSGT_DEMUX, MSGL_V, "Unhandled subchunk '%c%c%c%c'='%s'\n",((char *)&sid)[0],((char *)&sid)[1],((char *)&sid)[2],((char *)&sid)[3],sdata);
/* rest not recognized due to untranslatable Japanese expressions */
}
}
else
if(AV_RL32(chunk_id)==mmioFOURCC('D','A','T','A'))
{
demuxer->movi_start=stream_tell(s);
demuxer->movi_end=demuxer->movi_start+chunk_size;
mp_msg(MSGT_DEMUX, MSGL_V, "Found data at %"PRIX64" size %"PRIu64"\n",demuxer->movi_start,demuxer->movi_end);
/* Done! play it */
break;
}
else
{
mp_msg(MSGT_DEMUX, MSGL_V, "Unhandled chunk '%c%c%c%c' %u bytes\n",chunk_id[0],chunk_id[1],chunk_id[2],chunk_id[3],chunk_size);
stream_skip(s,chunk_size); /*unknown chunk type */
}
}
demuxer->audio->id = 0;
demuxer->audio->sh = sh_audio;
sh_audio->ds = demuxer->audio;
stream_seek(s,demuxer->movi_start);
demuxer->seekable=0;
return demuxer;
}
static int demux_vqf_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
sh_audio_t* sh_audio = demuxer->audio->sh;
int l = sh_audio->wf->nAvgBytesPerSec;
off_t spos = stream_tell(demuxer->stream);
demux_packet_t* dp;
if(stream_eof(demuxer->stream))
return 0;
dp = new_demux_packet(l);
ds->pts = spos / (float)(sh_audio->wf->nAvgBytesPerSec);
ds->pos = spos;
l=stream_read(demuxer->stream,dp->buffer,l);
resize_demux_packet(dp,l);
ds_add_packet(ds,dp);
return 1;
}
static void demux_seek_vqf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
#if 0
stream_t* s = demuxer->stream;
sh_audio_t* sh_audio = demuxer->audio->sh;
off_t base,pos;
base = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : stream_tell(s);
if(flags & SEEK_FACTOR)
pos = base + ((demuxer->movi_end - demuxer->movi_start)*rel_seek_secs);
else
pos = base + (rel_seek_secs*sh_audio->i_bps);
pos -= (pos % (sh_audio->channels * sh_audio->samplesize) );
stream_seek(s,pos);
#endif
}
static void demux_close_vqf(demuxer_t* demuxer) {}
const demuxer_desc_t demuxer_desc_vqf = {
"TwinVQ demuxer",
"vqf",
"VQF",
"Nick Kurshev",
"ported from MPlayerXP",
DEMUXER_TYPE_VQF,
1, // safe autodetect
demux_probe_vqf,
demux_vqf_fill_buffer,
demux_open_vqf,
demux_close_vqf,
demux_seek_vqf,
NULL
};
|
