mirror of https://github.com/mpv-player/mpv
220 lines
6.3 KiB
C
220 lines
6.3 KiB
C
#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include "libavutil/common.h"
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#include "libavutil/intreadwrite.h"
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#include "mpbswap.h"
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#include "stream/stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "libmpcodecs/vqf.h"
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static int demux_probe_vqf(demuxer_t* demuxer)
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{
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char buf[KEYWORD_BYTES];
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stream_t *s;
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s = demuxer->stream;
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if(stream_read(s,buf,KEYWORD_BYTES)!=KEYWORD_BYTES)
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return 0;
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if(memcmp(buf,"TWIN",KEYWORD_BYTES)==0) return DEMUXER_TYPE_VQF; /*version: 97012000*/
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return 0;
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}
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static demuxer_t* demux_open_vqf(demuxer_t* demuxer) {
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sh_audio_t* sh_audio;
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WAVEFORMATEX* w;
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stream_t *s;
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headerInfo *hi;
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s = demuxer->stream;
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sh_audio = new_sh_audio(demuxer,0);
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sh_audio->wf = w = malloc(sizeof(WAVEFORMATEX)+sizeof(headerInfo));
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hi = (headerInfo *)&w[1];
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memset(hi,0,sizeof(headerInfo));
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w->wFormatTag = 0x1;
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sh_audio->format = mmioFOURCC('T','W','I','N'); /* TWinVQ */
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w->nChannels = sh_audio->channels = 2;
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w->nSamplesPerSec = sh_audio->samplerate = 44100;
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w->nAvgBytesPerSec = w->nSamplesPerSec*sh_audio->channels*2;
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w->nBlockAlign = 0;
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sh_audio->samplesize = 2;
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w->wBitsPerSample = 8*sh_audio->samplesize;
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w->cbSize = 0;
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strcpy(hi->ID,"TWIN");
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stream_read(s,hi->ID+KEYWORD_BYTES,VERSION_BYTES); /* fourcc+version_id */
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while(1)
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{
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char chunk_id[4];
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unsigned chunk_size;
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hi->size=chunk_size=stream_read_dword(s); /* include itself */
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stream_read(s,chunk_id,4);
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if(AV_RL32(chunk_id)==mmioFOURCC('C','O','M','M'))
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{
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char buf[chunk_size-8];
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unsigned i,subchunk_size;
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if(stream_read(s,buf,chunk_size-8)!=chunk_size-8) return NULL;
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i=0;
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subchunk_size = AV_RB32(buf);
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hi->channelMode = AV_RB32(buf + 4);
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w->nChannels=sh_audio->channels=hi->channelMode+1; /*0-mono;1-stereo*/
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hi->bitRate = AV_RB32(buf + 8);
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sh_audio->i_bps=hi->bitRate*1000/8; /* bitrate kbit/s */
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w->nAvgBytesPerSec = sh_audio->i_bps;
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hi->samplingRate = AV_RB32(buf + 12);
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switch(hi->samplingRate){
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case 44:
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w->nSamplesPerSec=44100;
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break;
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case 22:
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w->nSamplesPerSec=22050;
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break;
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case 11:
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w->nSamplesPerSec=11025;
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break;
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default:
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w->nSamplesPerSec=hi->samplingRate*1000;
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break;
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}
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sh_audio->samplerate=w->nSamplesPerSec;
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hi->securityLevel = AV_RB32(buf + 16);
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w->nBlockAlign = 0;
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sh_audio->samplesize = 4;
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w->wBitsPerSample = 8*sh_audio->samplesize;
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w->cbSize = 0;
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i+=subchunk_size+4;
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while(i<chunk_size-8)
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{
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unsigned slen,sid;
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char sdata[chunk_size];
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sid = AV_RL32(buf + i); i+=4;
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slen = AV_RB32(buf + i); i+=4;
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if(sid==mmioFOURCC('D','S','I','Z'))
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{
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hi->Dsiz=AV_RB32(buf + i);
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continue; /* describes the same info as size of DATA chunk */
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}
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memcpy(sdata,&buf[i],slen); sdata[slen]=0; i+=slen;
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if(sid==mmioFOURCC('N','A','M','E'))
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{
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memcpy(hi->Name,sdata,FFMIN(BUFSIZ,slen));
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demux_info_add(demuxer,"Title",sdata);
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}
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else
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if(sid==mmioFOURCC('A','U','T','H'))
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{
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memcpy(hi->Auth,sdata,FFMIN(BUFSIZ,slen));
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demux_info_add(demuxer,"Author",sdata);
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}
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else
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if(sid==mmioFOURCC('C','O','M','T'))
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{
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memcpy(hi->Comt,sdata,FFMIN(BUFSIZ,slen));
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demux_info_add(demuxer,"Comment",sdata);
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}
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else
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if(sid==mmioFOURCC('(','c',')',' '))
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{
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memcpy(hi->Cpyr,sdata,FFMIN(BUFSIZ,slen));
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demux_info_add(demuxer,"Copyright",sdata);
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}
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else
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if(sid==mmioFOURCC('F','I','L','E'))
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{
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memcpy(hi->File,sdata,FFMIN(BUFSIZ,slen));
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}
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else
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if(sid==mmioFOURCC('A','L','B','M')) demux_info_add(demuxer,"Album",sdata);
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else
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if(sid==mmioFOURCC('Y','E','A','R')) demux_info_add(demuxer,"Date",sdata);
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else
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if(sid==mmioFOURCC('T','R','A','C')) demux_info_add(demuxer,"Track",sdata);
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else
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if(sid==mmioFOURCC('E','N','C','D')) demux_info_add(demuxer,"Encoder",sdata);
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else
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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);
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/* other stuff is unrecognized due untranslatable japan's idiomatics */
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}
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}
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else
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if(AV_RL32(chunk_id)==mmioFOURCC('D','A','T','A'))
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{
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demuxer->movi_start=stream_tell(s);
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demuxer->movi_end=demuxer->movi_start+chunk_size-8;
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mp_msg(MSGT_DEMUX, MSGL_V, "Found data at %"PRIX64" size %"PRIu64"\n",demuxer->movi_start,demuxer->movi_end);
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/* Done! play it */
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break;
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}
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else
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{
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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);
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stream_skip(s,chunk_size-8); /*unknown chunk type */
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}
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}
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demuxer->audio->id = 0;
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demuxer->audio->sh = sh_audio;
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sh_audio->ds = demuxer->audio;
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stream_seek(s,demuxer->movi_start);
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demuxer->seekable=0;
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return demuxer;
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}
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static int demux_vqf_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
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sh_audio_t* sh_audio = demuxer->audio->sh;
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int l = sh_audio->wf->nAvgBytesPerSec;
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off_t spos = stream_tell(demuxer->stream);
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demux_packet_t* dp;
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if(stream_eof(demuxer->stream))
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return 0;
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dp = new_demux_packet(l);
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ds->pts = spos / (float)(sh_audio->wf->nAvgBytesPerSec);
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ds->pos = spos;
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l=stream_read(demuxer->stream,dp->buffer,l);
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resize_demux_packet(dp,l);
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ds_add_packet(ds,dp);
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return 1;
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}
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static void demux_seek_vqf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
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#if 0
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stream_t* s = demuxer->stream;
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sh_audio_t* sh_audio = demuxer->audio->sh;
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off_t base,pos;
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base = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : stream_tell(s);
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if(flags & SEEK_FACTOR)
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pos = base + ((demuxer->movi_end - demuxer->movi_start)*rel_seek_secs);
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else
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pos = base + (rel_seek_secs*sh_audio->i_bps);
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pos -= (pos % (sh_audio->channels * sh_audio->samplesize) );
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stream_seek(s,pos);
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#endif
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}
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static void demux_close_vqf(demuxer_t* demuxer) {}
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const demuxer_desc_t demuxer_desc_vqf = {
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"TwinVQ demuxer",
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"vqf",
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"VQF",
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"Nick Kurshev",
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"ported frm MPlayerXP",
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DEMUXER_TYPE_VQF,
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1, // safe autodetect
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demux_probe_vqf,
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demux_vqf_fill_buffer,
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demux_open_vqf,
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demux_close_vqf,
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demux_seek_vqf,
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NULL
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};
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