mirror of
https://github.com/mpv-player/mpv
synced 2024-10-30 04:46:41 +01:00
d1b9720467
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2696 b3059339-0415-0410-9bf9-f77b7e298cf2
345 lines
8.6 KiB
C
345 lines
8.6 KiB
C
// VIVO file parser by A'rpi
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "bswap.h"
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typedef struct {
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float fps;
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} vivo_priv_t;
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int vivo_check_file(demuxer_t* demuxer){
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int flags=0;
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int i=0;
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int len;
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int len2;
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int c;
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unsigned char buf[2048+256];
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vivo_priv_t* priv;
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mp_msg(MSGT_DEMUX,MSGL_V,"Checking for VIVO\n");
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c=stream_read_char(demuxer->stream);
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if(c) return 0;
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len=0;
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while((c=stream_read_char(demuxer->stream))>=0x80){
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len+=0x80*(c-0x80);
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if(len>1024) return 0;
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}
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len+=c;
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printf("header block 1 size: %d\n",len);
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//stream_skip(demuxer->stream,len);
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stream_read(demuxer->stream,buf,len);
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buf[len]=0;
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// printf("VIVO header: '%s'\n",buf);
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// parse header:
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i=0;
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while(i<len && buf[i]==0x0D && buf[i+1]==0x0A) i+=2; // skip empty lines
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if(strncmp(buf+i,"Version:Vivo/",13)) return 0; // bad version/type!
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priv=malloc(sizeof(vivo_priv_t));
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memset(priv,0,sizeof(vivo_priv_t));
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demuxer->priv=priv;
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// TODO: parse FPS and other info (display title/author etc)
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priv->fps=10.0; // FIXME (parse from header)
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#if 0
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c=stream_read_char(demuxer->stream);
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if(c) return 0;
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len2=0;
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while((c=stream_read_char(demuxer->stream))>=0x80){
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len2+=0x80*(c-0x80);
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if(len+len2>2048) return 0;
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}
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len2+=c;
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printf("header block 2 size: %d\n",len2);
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stream_skip(demuxer->stream,len2);
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// stream_read(demuxer->stream,buf+len,len2);
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#endif
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// c=stream_read_char(demuxer->stream);
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// printf("first packet: %02X\n",c);
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return 1;
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}
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// return value:
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// 0 = EOF or no stream found
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// 1 = successfully read a packet
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int demux_vivo_fill_buffer(demuxer_t *demux){
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demux_stream_t *ds=NULL;
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int c;
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int len=0;
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int seq;
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demux->filepos=stream_tell(demux->stream);
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c=stream_read_char(demux->stream);
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// printf("c=%02X\n",c);
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switch(c&0xF0){
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case 0x00: // header - skip it!
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len=stream_read_char(demux->stream);
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// printf("header: %02X\n",len);
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if(len>=0x80) len=0x80*(len-0x80)+stream_read_char(demux->stream);
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printf("vivo extra header: %d bytes\n",len);
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break;
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case 0x10: // video packet
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len=128;
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ds=demux->video;
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break;
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case 0x20: // video packet
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len=stream_read_char(demux->stream);
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ds=demux->video;
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break;
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case 0x30: // audio ?
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len=0x28;
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ds=demux->audio;
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break;
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case 0x40: // audio packet
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len=24;
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ds=demux->audio;
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break;
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default:
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mp_msg(MSGT_DEMUX,MSGL_WARN,"VIVO - unknown ID found: %02X contact author!\n",c);
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}
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if(!ds || ds->id<-1){
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if(len) stream_skip(demux->stream,len);
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return 1;
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}
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seq=c&0x0F;
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if(ds->asf_packet){
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if(ds->asf_seq!=seq){
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// closed segment, finalize packet:
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ds_add_packet(ds,ds->asf_packet);
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ds->asf_packet=NULL;
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// printf("packet!\n");
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} else {
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// append data to it!
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demux_packet_t* dp=ds->asf_packet;
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dp->buffer=realloc(dp->buffer,dp->len+len);
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//memcpy(dp->buffer+dp->len,data,len);
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stream_read(demux->stream,dp->buffer+dp->len,len);
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mp_dbg(MSGT_DEMUX,MSGL_DBG4,"data appended! %d+%d\n",dp->len,len);
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dp->len+=len;
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// we are ready now.
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if((c&0xF0)==0x20) --ds->asf_seq; // hack!
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return 1;
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}
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}
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// create new packet:
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{ demux_packet_t* dp;
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dp=new_demux_packet(len);
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//memcpy(dp->buffer,data,len);
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stream_read(demux->stream,dp->buffer,len);
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// dp->pts=time*0.001f;
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// dp->flags=keyframe;
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// if(ds==demux->video) printf("ASF time: %8d dur: %5d \n",time,dur);
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dp->pos=demux->filepos;
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ds->asf_packet=dp;
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ds->asf_seq=seq;
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// we are ready now.
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return 1;
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}
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}
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static const short h263_format[8][2] = {
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{ 0, 0 },
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{ 128, 96 },
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{ 176, 144 },
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{ 352, 288 },
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{ 704, 576 },
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{ 1408, 1152 },
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{ 320, 240 } // ???????
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};
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static unsigned char* buffer;
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static int bufptr=0;
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static int bitcnt=0;
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static unsigned char buf=0;
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static int format, width, height;
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static unsigned int x_get_bits(int n){
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unsigned int x=0;
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while(n-->0){
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if(!bitcnt){
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// fill buff
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buf=buffer[bufptr++];
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bitcnt=8;
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}
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//x=(x<<1)|(buf&1);buf>>=1;
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x=(x<<1)|(buf>>7);buf<<=1;
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--bitcnt;
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}
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return x;
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}
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#define get_bits(xxx,n) x_get_bits(n)
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#define get_bits1(xxx) x_get_bits(1)
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#define skip_bits(xxx,n) x_get_bits(n)
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#define skip_bits1(xxx) x_get_bits(1)
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/* most is hardcoded. should extend to handle all h263 streams */
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static int h263_decode_picture_header(unsigned char *b_ptr)
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{
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int i;
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// for(i=0;i<16;i++) printf(" %02X",b_ptr[i]); printf("\n");
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buffer=b_ptr;
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bufptr=bitcnt=buf=0;
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/* picture header */
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if (get_bits(&s->gb, 22) != 0x20){
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printf("bad picture header\n");
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return -1;
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}
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skip_bits(&s->gb, 8); /* picture timestamp */
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if (get_bits1(&s->gb) != 1){
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printf("bad marker\n");
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return -1; /* marker */
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}
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if (get_bits1(&s->gb) != 0){
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printf("bad h263 id\n");
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return -1; /* h263 id */
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}
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skip_bits1(&s->gb); /* split screen off */
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skip_bits1(&s->gb); /* camera off */
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skip_bits1(&s->gb); /* freeze picture release off */
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format = get_bits(&s->gb, 3);
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if (format != 7) {
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printf("h263_plus = 0 format = %d\n",format);
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/* H.263v1 */
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width = h263_format[format][0];
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height = h263_format[format][1];
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printf("%d x %d\n",width,height);
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// if (!width) return -1;
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printf("pict_type=%d\n",get_bits1(&s->gb));
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printf("unrestricted_mv=%d\n",get_bits1(&s->gb));
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#if 1
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printf("SAC: %d\n",get_bits1(&s->gb));
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printf("advanced prediction mode: %d\n",get_bits1(&s->gb));
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printf("PB frame: %d\n",get_bits1(&s->gb));
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#else
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if (get_bits1(&s->gb) != 0)
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return -1; /* SAC: off */
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if (get_bits1(&s->gb) != 0)
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return -1; /* advanced prediction mode: off */
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if (get_bits1(&s->gb) != 0)
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return -1; /* not PB frame */
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#endif
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printf("qscale=%d\n",get_bits(&s->gb, 5));
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skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
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} else {
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printf("h263_plus = 1\n");
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/* H.263v2 */
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if (get_bits(&s->gb, 3) != 1){
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printf("H.263v2 A error\n");
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return -1;
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}
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if (get_bits(&s->gb, 3) != 6){ /* custom source format */
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printf("custom source format\n");
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return -1;
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}
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skip_bits(&s->gb, 12);
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skip_bits(&s->gb, 3);
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printf("pict_type=%d\n",get_bits(&s->gb, 3) + 1);
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// if (s->pict_type != I_TYPE &&
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// s->pict_type != P_TYPE)
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// return -1;
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skip_bits(&s->gb, 7);
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skip_bits(&s->gb, 4); /* aspect ratio */
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width = (get_bits(&s->gb, 9) + 1) * 4;
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skip_bits1(&s->gb);
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height = get_bits(&s->gb, 9) * 4;
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printf("%d x %d\n",width,height);
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//if (height == 0)
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// return -1;
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printf("qscale=%d\n",get_bits(&s->gb, 5));
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}
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/* PEI */
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while (get_bits1(&s->gb) != 0) {
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skip_bits(&s->gb, 8);
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}
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// s->f_code = 1;
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// s->width = width;
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// s->height = height;
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return 0;
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}
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void demux_open_vivo(demuxer_t* demuxer){
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vivo_priv_t* priv=demuxer->priv;
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if(!ds_fill_buffer(demuxer->video)){
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mp_msg(MSGT_DEMUX,MSGL_ERR,"VIVO: " MSGTR_MissingVideoStreamBug);
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return;
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}
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h263_decode_picture_header(demuxer->video->buffer);
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{ sh_video_t* sh=new_sh_video(demuxer,0);
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sh->format=0x6f766976; // "vivo"
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if(!sh->fps) sh->fps=priv->fps;
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sh->frametime=1.0f/sh->fps;
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sh->disp_w=width; // FIXME
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sh->disp_h=height;
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// emulate BITMAPINFOHEADER:
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sh->bih=malloc(sizeof(BITMAPINFOHEADER));
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memset(sh->bih,0,sizeof(BITMAPINFOHEADER));
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sh->bih->biSize=40;
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sh->bih->biWidth=sh->disp_w;
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sh->bih->biHeight=sh->disp_h;
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sh->bih->biPlanes=1;
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sh->bih->biBitCount=24;
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sh->bih->biCompression=sh->format;
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sh->bih->biSizeImage=sh->bih->biWidth*sh->bih->biHeight*3;
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demuxer->video->sh=sh; sh->ds=demuxer->video;
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demuxer->video->id=0;
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}
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if(demuxer->audio->id>=-1){
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if(!ds_fill_buffer(demuxer->audio)){
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mp_msg(MSGT_DEMUX,MSGL_ERR,"VIVO: " MSGTR_MissingAudioStream);
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} else
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{ sh_audio_t* sh=new_sh_audio(demuxer,1);
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sh->format=0x111; // 0x112
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// Emulate WAVEFORMATEX struct:
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sh->wf=malloc(sizeof(WAVEFORMATEX));
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memset(sh->wf,0,sizeof(WAVEFORMATEX));
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sh->wf->nChannels=1;
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sh->wf->wBitsPerSample=16;
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sh->wf->nSamplesPerSec=22050;
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sh->wf->nAvgBytesPerSec=sh->wf->nChannels*sh->wf->wBitsPerSample*sh->wf->nSamplesPerSec/8;
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demuxer->audio->sh=sh; sh->ds=demuxer->audio;
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demuxer->audio->id=1;
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}
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}
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}
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