diff options
Diffstat (limited to 'libmpdemux/demux_nsv.c')
| -rw-r--r-- | libmpdemux/demux_nsv.c | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/libmpdemux/demux_nsv.c b/libmpdemux/demux_nsv.c deleted file mode 100644 index 9ab68dd894..0000000000 --- a/libmpdemux/demux_nsv.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Nullsoft Streaming Video demuxer - * copyright (c) 2004 by Reza Jelveh <reza.jelveh@tuhh.de> - * Based on A'rpis G2 work - * - * seeking and PCM audio not yet supported - * PCM needs extra audio chunk "miniheader" parsing - * - * 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 "config.h" -#include "mp_msg.h" -#include "stream/stream.h" -#include "demuxer.h" -#include "stheader.h" - -typedef struct { - float v_pts; - int video_pack_no; - unsigned int a_format; - unsigned int v_format; - unsigned char fps; -} nsv_priv_t; - -#define HEADER_SEARCH_SIZE 256000 - - -/** - * Seeking still to be implemented - */ -static void demux_seek_nsv ( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags ) -{ -// seeking is not yet implemented -} - - -static int demux_nsv_fill_buffer ( demuxer_t *demuxer, demux_stream_t *ds ) -{ - unsigned char hdr[17]; - // for the extra data - unsigned char aux[6]; - int i_aux = 0; - // videolen = audio chunk length, audiolen = video chunk length - int videolen,audiolen; - - sh_video_t *sh_video = demuxer->video->sh; - sh_audio_t *sh_audio = demuxer->audio->sh; - - nsv_priv_t * priv = demuxer->priv; - - // if the audio/video chunk has no new header the first 2 bytes will be discarded 0xBEEF - // or rather 0xEF 0xBE - stream_read(demuxer->stream,hdr,7); - if(stream_eof(demuxer->stream)) return 0; - // sometimes instead of 0xBEEF as described for the next audio/video chunk we get - // a whole new header - - mp_dbg(MSGT_DEMUX, MSGL_DBG2, "demux_nsv: %08X %08X\n", - hdr[0]<<8|hdr[1], (unsigned int)stream_tell(demuxer->stream)); - switch(hdr[0]<<8|hdr[1]) { - case 0x4E53: - if(hdr[2]==0x56 && hdr[3]==0x73){ - // NSVs - // get the header since there is no more metaheader after the first one - // there is no more need to skip that - stream_read(demuxer->stream,hdr+7,17-7); - stream_read(demuxer->stream,hdr,7); - } - break; - - case 0xEFBE: - break; - - default: - mp_dbg(MSGT_DEMUX,MSGL_WARN,"demux_nsv: sync lost\n"); - break; - } - - if (sh_video) - priv->v_pts =demuxer->video->pts= priv->video_pack_no * - (float)sh_video->frametime; - else - priv->v_pts = priv->video_pack_no; - - demuxer->filepos=stream_tell(demuxer->stream); - - - mp_dbg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: %08X: %02X %02X | %02X %02X %02X | %02X %02X \n", - (int)demuxer->filepos, hdr[0],hdr[1],hdr[2],hdr[3],hdr[4],hdr[5],hdr[6]); - - // read video: - videolen=(hdr[2]>>4)|(hdr[3]<<4)|(hdr[4]<<0xC); - //check if we got extra data like subtitles here - if( (hdr[2]&0x0f) != 0x0 ) { - stream_read( demuxer->stream, aux, 6); - - i_aux = aux[0]|aux[1]<<8; - // We skip this extra data - stream_skip( demuxer->stream, i_aux ); - i_aux+=6; - videolen -= i_aux; - } - - - // we need to return an empty packet when the - // video frame is empty otherwise the stream will fasten up - if(sh_video) { - if( (hdr[2]&0x0f) != 0x0 ) - ds_read_packet(demuxer->video,demuxer->stream,videolen,priv->v_pts,demuxer->filepos-i_aux,0); - else - ds_read_packet(demuxer->video,demuxer->stream,videolen,priv->v_pts,demuxer->filepos,0); - } - else - stream_skip(demuxer->stream,videolen); - - // read audio: - audiolen=(hdr[5])|(hdr[6]<<8); - // we need to return an empty packet when the - // audio frame is empty otherwise the stream will fasten up - if(sh_audio) { - ds_read_packet(demuxer->audio,demuxer->stream,audiolen,priv->v_pts,demuxer->filepos+videolen,0); - } - else - stream_skip(demuxer->stream,audiolen); - - ++priv->video_pack_no; - - return 1; - -} - - -static demuxer_t* demux_open_nsv ( demuxer_t* demuxer ) -{ - // last 2 bytes 17 and 18 are unknown but right after that comes the length - unsigned char hdr[17]; - int videolen,audiolen; - unsigned char buf[10]; - sh_video_t *sh_video = NULL; - sh_audio_t *sh_audio = NULL; - - - nsv_priv_t * priv = malloc(sizeof(nsv_priv_t)); - demuxer->priv=priv; - priv->video_pack_no=0; - - /* disable seeking yet to be fixed*/ - demuxer->seekable = 0; - - stream_read(demuxer->stream,hdr,4); - if(stream_eof(demuxer->stream)) return 0; - - if(hdr[0]==0x4E && hdr[1]==0x53 && hdr[2]==0x56){ - // NSV header! - if(hdr[3]==0x73){ - // NSVs - stream_read(demuxer->stream,hdr+4,17-4); - } - - if(hdr[3]==0x66){ - // NSVf - int len=stream_read_dword_le(demuxer->stream); - // TODO: parse out metadata!!!! - stream_skip(demuxer->stream,len-8); - - // NSVs - stream_read(demuxer->stream,hdr,17); - if (stream_eof(demuxer->stream) || strncmp(hdr, "NSVs", 4)) - return 0; - } - - // dummy debug message - mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: Header: %.12s\n",hdr); - - // bytes 8-11 audio codec fourcc - // PCM fourcc needs extra parsing for every audio chunk, yet to implement - if((demuxer->audio->id != -2) && strncmp(hdr+8,"NONE", 4)){//&&strncmp(hdr+8,"VLB ", 4)){ - sh_audio = new_sh_audio ( demuxer, 0 ); - demuxer->audio->id = 0; - demuxer->audio->sh = sh_audio; - sh_audio->format=mmioFOURCC(hdr[8],hdr[9],hdr[10],hdr[11]); - sh_audio->ds = demuxer->audio; - priv->a_format=mmioFOURCC(hdr[8],hdr[9],hdr[10],hdr[11]); - } - - // store hdr fps - priv->fps=hdr[16]; - - if ((demuxer->video->id != -2) && strncmp(hdr+4,"NONE", 4)) { - /* Create a new video stream header */ - sh_video = new_sh_video ( demuxer, 0 ); - - /* Make sure the demuxer knows about the new video stream header - * (even though new_sh_video() ought to take care of it) - */ - demuxer->video->sh = sh_video; - - /* Make sure that the video demuxer stream header knows about its - * parent video demuxer stream (this is getting wacky), or else - * video_read_properties() will choke - */ - sh_video->ds = demuxer->video; - - // bytes 4-7 video codec fourcc - priv->v_format = sh_video->format=mmioFOURCC(hdr[4],hdr[5],hdr[6],hdr[7]); - - // new video stream! parse header - sh_video->disp_w=hdr[12]|(hdr[13]<<8); - sh_video->disp_h=hdr[14]|(hdr[15]<<8); - sh_video->bih=calloc(1,sizeof(*sh_video->bih)); - sh_video->bih->biSize=sizeof(*sh_video->bih); - sh_video->bih->biPlanes=1; - sh_video->bih->biBitCount=24; - sh_video->bih->biWidth=hdr[12]|(hdr[13]<<8); - sh_video->bih->biHeight=hdr[14]|(hdr[15]<<8); - memcpy(&sh_video->bih->biCompression,hdr+4,4); - sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3; - - // here we search for the correct keyframe - // vp6 keyframe is when the 2nd byte of the vp6 header is - // 0x36 for VP61 and 0x46 for VP62 - if((priv->v_format==mmioFOURCC('V','P','6','1')) || - (priv->v_format==mmioFOURCC('V','P','6','2')) || - (priv->v_format==mmioFOURCC('V','P','3','1'))) { - stream_read(demuxer->stream,buf,10); - if (((((priv->v_format>>16) & 0xff) == '6') && ((buf[8]&0x0e)!=0x06)) || - ((((priv->v_format>>16) & 0xff) == '3') && (buf[8]!=0x00 || buf[9]!=0x08))) { - mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: searching %.4s keyframe...\n", (char*)&priv->v_format); - while(((((priv->v_format>>16) & 0xff) == '6') && ((buf[8]&0x0e)!=0x06)) || - ((((priv->v_format>>16) & 0xff) == '3') && (buf[8]!=0x00 || buf[9]!=0x08))){ - mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: %.4s block skip.\n", (char*)&priv->v_format); - videolen=(buf[2]>>4)|(buf[3]<<4)|(buf[4]<<0xC); - audiolen=(buf[5])|(buf[6]<<8); - stream_skip(demuxer->stream, videolen+audiolen-3); - stream_read(demuxer->stream,buf,10); - if(stream_eof(demuxer->stream)) return 0; - if(buf[0]==0x4E){ - mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: Got NSVs block.\n"); - stream_skip(demuxer->stream,7); - stream_read(demuxer->stream,buf,10); - } - } - } - - // data starts 10 bytes before current pos but later - // we seek 17 backwards - stream_skip(demuxer->stream,7); - } - - switch(priv->fps){ - case 0x80: - sh_video->fps=30; - break; - case 0x81: - sh_video->fps=(float)30000.0/1001.0; - break; - case 0x82: - sh_video->fps=25; - break; - case 0x83: - sh_video->fps=(float)24000.0/1001.0; - break; - case 0x85: - sh_video->fps=(float)15000.0/1001.0; - break; - case 0x89: - sh_video->fps=(float)10000.0/1001.0; - break; - default: - sh_video->fps = (float)priv->fps; - } - sh_video->frametime = (float)1.0 / (float)sh_video->fps; - } - } - - // seek to start of NSV header - stream_seek(demuxer->stream,stream_tell(demuxer->stream)-17); - - return demuxer; -} - -static int nsv_check_file ( demuxer_t* demuxer ) -{ - uint32_t hdr = 0; - int i; - - mp_msg ( MSGT_DEMUX, MSGL_V, "Checking for Nullsoft Streaming Video\n" ); - - for (i = 0; i < HEADER_SEARCH_SIZE; i++) { - uint8_t c = stream_read_char(demuxer->stream); - if (stream_eof(demuxer->stream)) - return 0; - if (hdr == mmioFOURCC('s', 'V', 'S', 'N') || - (hdr == mmioFOURCC('f', 'V', 'S', 'N') && !c)) { - stream_seek(demuxer->stream,stream_tell(demuxer->stream)-5); - return DEMUXER_TYPE_NSV; - } - hdr = (hdr << 8) | c; - } - - return 0; -} - -static void demux_close_nsv(demuxer_t* demuxer) { - nsv_priv_t* priv = demuxer->priv; - - free(priv); - -} - - -const demuxer_desc_t demuxer_desc_nsv = { - "NullsoftVideo demuxer", - "nsv", - "Nullsoft Streaming Video", - "Reza Jelveh", - "nsv and nsa streaming files", - DEMUXER_TYPE_NSV, - 0, // safe but expensive autodetect - nsv_check_file, - demux_nsv_fill_buffer, - demux_open_nsv, - demux_close_nsv, - demux_seek_nsv, - NULL -}; |