diff options
Diffstat (limited to 'demux/demux_asf.c')
| -rw-r--r-- | demux/demux_asf.c | 697 |
1 files changed, 697 insertions, 0 deletions
diff --git a/demux/demux_asf.c b/demux/demux_asf.c new file mode 100644 index 0000000000..9d189ef095 --- /dev/null +++ b/demux/demux_asf.c @@ -0,0 +1,697 @@ +/* + * ASF file parser for DEMUXER v0.3 + * copyright (c) 2001 A'rpi/ESP-team + * + * 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 <limits.h> + +#include <libavutil/intreadwrite.h> + +#include "config.h" +#include "mp_msg.h" + +#include "stream/stream.h" +#include "asf.h" +#include "asfheader.h" +#include "demuxer.h" +#include "libmpcodecs/dec_audio.h" + +// based on asf file-format doc by Eugene [http://divx.euro.ru] + +/** + * \brief reads int stored in number of bytes given by len + * \param ptr pointer to read from, is incremented appropriately + * \param len lowest 2 bits indicate number of bytes to read + * \param def default value to return if len is invalid + */ +static inline unsigned read_varlen(uint8_t **ptr, int len, int def) { + const uint8_t *p = *ptr; + len &= 3; + switch (len) { + case 1: *ptr += 1; return *p; + case 2: *ptr += 2; return AV_RL16(p); + case 3: *ptr += 4; return AV_RL32(p); + } + return def; +} + +/** + * \brief checks if there is enough data to read the bytes given by len + * \param ptr pointer to read from + * \param endptr pointer to the end of the buffer + * \param len lowest 2 bits indicate number of bytes to read + */ +static inline int check_varlen(uint8_t *ptr, uint8_t *endptr, int len) { + return len&3 ? ptr + (1<<((len&3) - 1)) <= endptr : 1; +} + +static void asf_descrambling(unsigned char **src,unsigned len, struct asf_priv* asf){ + unsigned char *dst; + unsigned char *s2=*src; + unsigned i=0,x,y; + if (len > UINT_MAX - MP_INPUT_BUFFER_PADDING_SIZE) + return; + dst = malloc(len + MP_INPUT_BUFFER_PADDING_SIZE); + while(len>=asf->scrambling_h*asf->scrambling_w*asf->scrambling_b+i){ +// mp_msg(MSGT_DEMUX,MSGL_DBG4,"descrambling! (w=%d b=%d)\n",w,asf_scrambling_b); + //i+=asf_scrambling_h*asf_scrambling_w; + for(x=0;x<asf->scrambling_w;x++) + for(y=0;y<asf->scrambling_h;y++){ + memcpy(dst+i,s2+(y*asf->scrambling_w+x)*asf->scrambling_b,asf->scrambling_b); + i+=asf->scrambling_b; + } + s2+=asf->scrambling_h*asf->scrambling_w*asf->scrambling_b; + } + //if(i<len) memcpy(dst+i,src+i,len-i); + free(*src); + *src = dst; +} + +/***************************************************************** + * \brief initializes asf private data + * + */ +static void init_priv (struct asf_priv* asf){ + asf->last_vid_seq=-1; + asf->vid_ext_timing_index=-1; + asf->aud_ext_timing_index=-1; + asf->vid_ext_frame_index=-1; +} + +static void demux_asf_append_to_packet(demux_packet_t* dp,unsigned char *data,int len,int offs) +{ + if(dp->len!=offs && offs!=-1) mp_msg(MSGT_DEMUX,MSGL_V,"warning! fragment.len=%d BUT next fragment offset=%d \n",dp->len,offs); + dp->buffer=realloc(dp->buffer,dp->len+len+MP_INPUT_BUFFER_PADDING_SIZE); + memcpy(dp->buffer+dp->len,data,len); + memset(dp->buffer+dp->len+len, 0, MP_INPUT_BUFFER_PADDING_SIZE); + mp_dbg(MSGT_DEMUX,MSGL_DBG4,"data appended! %d+%d\n",dp->len,len); + dp->len+=len; +} + +static int demux_asf_read_packet(demuxer_t *demux,unsigned char *data,int len,int id,int seq,uint64_t time,unsigned short dur,int offs,int keyframe){ + struct asf_priv* asf = demux->priv; + demux_stream_t *ds=NULL; + int close_seg=0; + + mp_dbg(MSGT_DEMUX,MSGL_DBG4,"demux_asf.read_packet: id=%d seq=%d len=%d\n",id,seq,len); + + if(demux->video->id==-1) + if(demux->v_streams[id]) + demux->video->id=id; + + if(demux->audio->id==-1) + if(demux->a_streams[id]) + demux->audio->id=id; + + if(id==demux->audio->id){ + // audio + ds=demux->audio; + if(!ds->sh){ + ds->sh=demux->a_streams[id]; + mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected ASF audio ID = %d\n",ds->id); + } + } else + if(id==demux->video->id){ + // video + ds=demux->video; + if(!ds->sh){ + ds->sh=demux->v_streams[id]; + mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected ASF video ID = %d\n",ds->id); + } + } + + if(ds){ + if(ds->asf_packet){ + demux_packet_t* dp=ds->asf_packet; + + if (ds==demux->video && asf->asf_is_dvr_ms) { + if (asf->new_vid_frame_seg) { + dp->pos=demux->filepos; + close_seg = 1; + } else seq = ds->asf_seq; + } else close_seg = ds->asf_seq!=seq; + + if(close_seg){ + // closed segment, finalize packet: + if(ds==demux->audio) + if(asf->scrambling_h>1 && asf->scrambling_w>1 && asf->scrambling_b>0) + asf_descrambling(&ds->asf_packet->buffer,ds->asf_packet->len,asf); + ds_add_packet(ds,ds->asf_packet); + ds->asf_packet=NULL; + } else { + // append data to it! + demux_asf_append_to_packet(dp,data,len,offs); + // we are ready now. + return 1; + } + } + // create new packet: + { demux_packet_t* dp; + if(offs>0){ + mp_msg(MSGT_DEMUX,MSGL_V,"warning! broken fragment, %d bytes missing \n",offs); + return 0; + } + dp=new_demux_packet(len); + memcpy(dp->buffer,data,len); + if (asf->asf_is_dvr_ms) + dp->pts=time*0.0000001; + else + dp->pts=time*0.001; + dp->keyframe = keyframe; +// if(ds==demux->video) printf("ASF time: %8d dur: %5d \n",time,dur); + dp->pos=demux->filepos; + ds->asf_packet=dp; + ds->asf_seq=seq; + // we are ready now. + return 1; + } + } + + return 0; +} + +/***************************************************************** + * \brief read the replicated data associated with each segment + * \parameter pp reference to replicated data + * \parameter id stream number + * \parameter seq media object number + * \parameter keyframe key frame indicator - set to zero if keyframe, non-zero otherwise + * \parameter seg_time set to payload time when valid, if audio or new video frame payload, zero otherwise + * + */ +static void get_payload_extension_data(demuxer_t *demux, unsigned char** pp, unsigned char id, unsigned int seq, int *keyframe, uint64_t *seg_time){ + struct asf_priv* asf = demux->priv; + uint64_t payload_time = -1; //100ns units + int i, ext_max, ext_timing_index; + uint8_t *pi = *pp+4; + + if(demux->video->id==-1) + if(demux->v_streams[id]) + demux->video->id=id; + + if(demux->audio->id==-1) + if(demux->a_streams[id]) + demux->audio->id=id; + + if (id!=demux->video->id && id!=demux->audio->id) return; + + if (id==demux->video->id) { + ext_max = asf->vid_repdata_count; + ext_timing_index = asf->vid_ext_timing_index; + } else { + ext_max = asf->aud_repdata_count; + ext_timing_index = asf->aud_ext_timing_index; + } + + *seg_time=0.0; + asf->new_vid_frame_seg = 0; + + for (i=0; i<ext_max; i++) { + uint16_t payextsize; + uint8_t segment_marker; + + if (id==demux->video->id) + payextsize = asf->vid_repdata_sizes[i]; + else + payextsize = asf->aud_repdata_sizes[i]; + + if (payextsize == 65535) { + payextsize = AV_RL16(pi); + pi+=2; + } + + // if this is the timing info extension then read the payload time + if (i == ext_timing_index) + payload_time = AV_RL64(pi+8); + + // if this is the video frame info extension then + // set the keyframe indicator, the 'new frame segment' indicator + // and (initially) the 'frame time' + if (i == asf->vid_ext_frame_index && id==demux->video->id) { + segment_marker = pi[0]; + // Known video stream segment_marker values that + // contain useful information: + // + // NTSC/ATSC (29.97fps): 0X4A 01001010 + // 0X4B 01001011 + // 0X49 01001001 + // + // PAL/ATSC (25fps): 0X3A 00111010 + // 0X3B 00111011 + // 0X39 00111001 + // + // ATSC progressive (29.97fps): 0X7A 01111010 + // 0X7B 01111011 + // 0X79 01111001 + // 11111111 + // ^ this is new video frame marker + // + // ^^^^ these bits indicate the framerate + // 0X4 is 29.97i, 0X3 is 25i, 0X7 is 29.97p, ???=25p + // + // ^^^ these bits indicate the frame type: + // 001 means I-frame + // 010 and 011 probably mean P and B + + asf->new_vid_frame_seg = (0X08 & segment_marker) && seq != asf->last_vid_seq; + + if (asf->new_vid_frame_seg) asf->last_vid_seq = seq; + + if (asf->avg_vid_frame_time == 0) { + // set the average frame time initially (in 100ns units). + // This is based on what works for known samples. + // It can be extended if more samples of different types can be obtained. + if (((segment_marker & 0XF0) >> 4) == 4) { + asf->avg_vid_frame_time = (uint64_t)((1.001 / 30.0) * 10000000.0); + asf->know_frame_time=1; + } else if (((segment_marker & 0XF0) >> 4) == 3) { + asf->avg_vid_frame_time = (uint64_t)(0.04 * 10000000.0); + asf->know_frame_time=1; + } else if (((segment_marker & 0XF0) >> 4) == 6) { + asf->avg_vid_frame_time = (uint64_t)(0.02 * 10000000.0); + asf->know_frame_time=1; + } else if (((segment_marker & 0XF0) >> 4) == 7) { + asf->avg_vid_frame_time = (uint64_t)((1.001 / 60.0) * 10000000.0); + asf->know_frame_time=1; + } else { + // we dont know the frame time initially so + // make a guess and then recalculate as we go. + asf->avg_vid_frame_time = (uint64_t)((1.001 / 60.0) * 10000000.0); + asf->know_frame_time=0; + } + } + *keyframe = (asf->new_vid_frame_seg && (segment_marker & 0X07) == 1); + } + pi +=payextsize; + } + + if (id==demux->video->id && asf->new_vid_frame_seg) { + asf->vid_frame_ct++; + // Some samples only have timings on key frames and + // the rest contain non-cronological timestamps. Interpolating + // the values between key frames works for all samples. + if (*keyframe) { + asf->found_first_key_frame=1; + if (!asf->know_frame_time && asf->last_key_payload_time > 0) { + // We dont know average frametime so recalculate. + // Giving precedence to the 'weight' of the existing + // average limits damage done to new value when there is + // a sudden time jump which happens occasionally. + asf->avg_vid_frame_time = + (0.9 * asf->avg_vid_frame_time) + + (0.1 * ((payload_time - asf->last_key_payload_time) / asf->vid_frame_ct)); + } + asf->last_key_payload_time = payload_time; + asf->vid_frame_ct = 1; + *seg_time = payload_time; + } else + *seg_time = (asf->last_key_payload_time + (asf->avg_vid_frame_time * (asf->vid_frame_ct-1))); + } + + if (id==demux->audio->id) { + if (payload_time != -1) + asf->last_aud_diff = payload_time - asf->last_aud_pts; + asf->last_aud_pts += asf->last_aud_diff; + *seg_time = asf->last_aud_pts; + } +} +//static int num_elementary_packets100=0; +//static int num_elementary_packets101=0; + +// return value: +// 0 = EOF or no stream found +// 1 = successfully read a packet +static int demux_asf_fill_buffer(demuxer_t *demux, demux_stream_t *ds){ + struct asf_priv* asf = demux->priv; + + demux->filepos=stream_tell(demux->stream); + // Brodcast stream have movi_start==movi_end + // Better test ? + if((demux->movi_start < demux->movi_end) && (demux->filepos>=demux->movi_end)){ + demux->stream->eof=1; + return 0; + } + + stream_read(demux->stream,asf->packet,asf->packetsize); + if(demux->stream->eof) return 0; // EOF + if(asf->packetsize < 2) return 0; // Packet too short + + { + unsigned char* p=asf->packet; + unsigned char* p_end=asf->packet+asf->packetsize; + unsigned char flags=p[0]; + unsigned char segtype=p[1]; + unsigned padding; + unsigned plen; + unsigned sequence av_unused; + unsigned long time av_unused = 0; + unsigned short duration=0; + + int segs=1; + unsigned char segsizetype=0x80; + int seg=-1; + + if( mp_msg_test(MSGT_DEMUX,MSGL_DBG2) ){ + int i; + for(i=0;i<FFMIN(16, asf->packetsize);i++) printf(" %02X",asf->packet[i]); + printf("\n"); + } + + // skip ECC data if present by testing bit 7 of flags + // 1xxxbbbb -> ecc data present, skip bbbb byte(s) + // 0xxxxxxx -> payload parsing info starts + if (flags & 0x80) + { + p += (flags & 0x0f)+1; + if (p+1 >= p_end) return 0; // Packet too short + flags = p[0]; + segtype = p[1]; + } + + //if(segtype!=0x5d) printf("Warning! packet[4] != 0x5d \n"); + + p+=2; // skip flags & segtype + + // Read packet size (plen): + if(!check_varlen(p, p_end, flags>> 5)) return 0; // Not enough data + plen = read_varlen(&p, flags >> 5, 0); + + // Read sequence: + if(!check_varlen(p, p_end, flags>> 1)) return 0; // Not enough data + sequence = read_varlen(&p, flags >> 1, 0); + + // Read padding size (padding): + if(!check_varlen(p, p_end, flags>> 3)) return 0; // Not enough data + padding = read_varlen(&p, flags >> 3, 0); + + if(((flags>>5)&3)!=0){ + // Explicit (absoulte) packet size + mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Explicit packet size specified: %d \n",plen); + if(plen>asf->packetsize) mp_msg(MSGT_DEMUX,MSGL_V,"Warning! plen>packetsize! (%d>%d) \n",plen,asf->packetsize); + } else { + // Padding (relative) size + plen=asf->packetsize-padding; + } + + // Read time & duration: + if (p+5 >= p_end) return 0; // Packet too short + time = AV_RL32(p); p+=4; + duration = AV_RL16(p); p+=2; + + // Read payload flags: + if(flags&1){ + // multiple sub-packets + if (p >= p_end) return 0; // Packet too short + segsizetype=p[0]>>6; + segs=p[0] & 0x3F; + ++p; + } + mp_dbg(MSGT_DEMUX,MSGL_DBG4,"%08"PRIu64": flag=%02X segs=%d seq=%u plen=%u pad=%u time=%ld dur=%d\n", + (uint64_t)demux->filepos,flags,segs,sequence,plen,padding,time,duration); + + for(seg=0;seg<segs;seg++){ + //ASF_segmhdr_t* sh; + unsigned char streamno; + unsigned int seq; + unsigned int x; // offset or timestamp + unsigned int rlen; + // + int len; + uint64_t time2=0; + int keyframe=0; + + if(p>=p_end) { + mp_msg(MSGT_DEMUX,MSGL_V,"Warning! invalid packet 1, aborting parsing...\n"); + break; + } + + if( mp_msg_test(MSGT_DEMUX,MSGL_DBG2) ){ + int i; + printf("seg %d:",seg); + for(i=0;i<FFMIN(16, p_end - p);i++) printf(" %02X",p[i]); + printf("\n"); + } + + streamno=p[0]&0x7F; + if(p[0]&0x80) keyframe=1; + p++; + + // Read media object number (seq): + if(!check_varlen(p, p_end, segtype >> 4)) break; // Not enough data + seq = read_varlen(&p, segtype >> 4, 0); + + // Read offset or timestamp: + if(!check_varlen(p, p_end, segtype >> 2)) break; // Not enough data + x = read_varlen(&p, segtype >> 2, 0); + + // Read replic.data len: + if(!check_varlen(p, p_end, segtype)) break; // Not enough data + rlen = read_varlen(&p, segtype, 0); + +// printf("### rlen=%d \n",rlen); + if (rlen > p_end - p) { + mp_msg(MSGT_DEMUX, MSGL_V, "invalid rlen=%u\n", rlen); + break; + } + + switch(rlen){ + case 0x01: // 1 = special, means grouping + //printf("grouping: %02X \n",p[0]); + ++p; // skip PTS delta + break; + default: + if(rlen>=8){ + p+=4; // skip object size + if (p+3 >= p_end) break; // Packet too short + time2=AV_RL32(p); // read PTS + if (asf->asf_is_dvr_ms) + get_payload_extension_data(demux, &p, streamno, seq, &keyframe, &time2); + p+=rlen-4; + } else { + mp_msg(MSGT_DEMUX,MSGL_V,"unknown segment type (rlen): 0x%02X \n",rlen); + time2=0; // unknown + p+=rlen; + } + } + + if(flags&1){ + // multiple segments + if(!check_varlen(p, p_end, segsizetype)) break; // Not enough data + len = read_varlen(&p, segsizetype, plen-(p-asf->packet)); + } else { + // single segment + len=plen-(p-asf->packet); + } + if(len<0 || (p+len)>p_end){ + mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! segment len=%d\n",len); + len = p_end - p; + } + mp_dbg(MSGT_DEMUX,MSGL_DBG4," seg #%d: streamno=%d seq=%d type=%02X len=%d\n",seg,streamno,seq,rlen,len); + + switch(rlen){ + case 0x01: + // GROUPING: + //printf("ASF_parser: warning! grouping (flag=1) not yet supported!\n",len); + //printf(" total: %d \n",len); + while(len>0){ + int len2=p[0]; + p++; + //printf(" group part: %d bytes\n",len2); + if(len2 > len - 1 || len2 < 0) break; // Not enough data + len2 = FFMIN(len2, asf->packetsize); + demux_asf_read_packet(demux,p,len2,streamno,seq,x,duration,-1,keyframe); + p+=len2; + len-=len2+1; + ++seq; + } + if(len!=0){ + mp_msg(MSGT_DEMUX,MSGL_V,"ASF_parser: warning! groups total != len\n"); + } + break; + default: + // NO GROUPING: + //printf("fragment offset: %d \n",sh->x); + if (len <= 0) break; + if (!asf->asf_is_dvr_ms || asf->found_first_key_frame) { + len = FFMIN(len, asf->packetsize); + demux_asf_read_packet(demux,p,len,streamno,seq,time2,duration,x,keyframe); + } + p+=len; + break; + } + + } // for segs + return 1; // success + } + + mp_msg(MSGT_DEMUX,MSGL_V,"%08"PRIX64": UNKNOWN TYPE %02X %02X %02X %02X %02X...\n",(int64_t)demux->filepos,asf->packet[0],asf->packet[1],asf->packet[2],asf->packet[3],asf->packet[4]); + return 0; +} + +#include "stheader.h" + +static void demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){ + struct asf_priv* asf = 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; + + //FIXME: OFF_T - didn't test ASF case yet (don't have a large asf...) + //FIXME: reports good or bad to steve@daviesfam.org please + + //================= seek in ASF ========================== + float p_rate=asf->packetrate; // packets / sec + off_t rel_seek_packs=(flags&SEEK_FACTOR)? // FIXME: int may be enough? + (rel_seek_secs*(demuxer->movi_end-demuxer->movi_start)/asf->packetsize): + (rel_seek_secs*p_rate); + off_t rel_seek_bytes=rel_seek_packs*asf->packetsize; + off_t newpos; + //printf("ASF: packs: %d duration: %d \n",(int)fileh.packets,*((int*)&fileh.duration)); +// printf("ASF_seek: %d secs -> %d packs -> %d bytes \n", +// rel_seek_secs,rel_seek_packs,rel_seek_bytes); + newpos=((flags&SEEK_ABSOLUTE)?demuxer->movi_start:demuxer->filepos)+rel_seek_bytes; + if(newpos<0 || newpos<demuxer->movi_start) newpos=demuxer->movi_start; +// printf("\r -- asf: newpos=%d -- \n",newpos); + stream_seek(demuxer->stream,newpos); + + if (asf->asf_is_dvr_ms) asf->dvr_last_vid_pts = 0.0f; + + if (d_video->id >= 0) + ds_fill_buffer(d_video); + if(sh_audio){ + ds_fill_buffer(d_audio); + } + + if (d_video->id >= 0) + while(1){ + if(sh_audio && !d_audio->eof){ + float a_pts=d_audio->pts; + a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps; + // sync audio: + if (d_video->pts > a_pts){ + skip_audio_frame(sh_audio); +// if(!ds_fill_buffer(d_audio)) sh_audio=NULL; // skip audio. EOF? + continue; + } + } + if (d_video->keyframe) + break; + if(!ds_fill_buffer(d_video)) break; // skip frame. EOF? + } + + +} + +static int demux_asf_control(demuxer_t *demuxer,int cmd, void *arg){ + struct asf_priv* asf = 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; +*/ + switch(cmd) { + case DEMUXER_CTRL_GET_TIME_LENGTH: + *((double *)arg)=asf->movielength; + return DEMUXER_CTRL_OK; + + case DEMUXER_CTRL_GET_PERCENT_POS: + return DEMUXER_CTRL_DONTKNOW; + + default: + return DEMUXER_CTRL_NOTIMPL; + } +} + + +static demuxer_t* demux_open_asf(demuxer_t* demuxer) +{ + struct asf_priv* asf = demuxer->priv; + sh_video_t *sh_video=NULL; + + //---- ASF header: + if(!asf) return NULL; + init_priv(asf); + if (!read_asf_header(demuxer,asf)) + return NULL; + stream_reset(demuxer->stream); + stream_seek(demuxer->stream,demuxer->movi_start); +// demuxer->idx_pos=0; +// demuxer->endpos=avi_header.movi_end; + if(demuxer->video->id != -2) { + if(!ds_fill_buffer(demuxer->video)){ + mp_msg(MSGT_DEMUXER, MSGL_WARN, "ASF: %s", + mp_gtext("No video stream found.\n")); + demuxer->video->sh=NULL; + //printf("ASF: missing video stream!? contact the author, it may be a bug :(\n"); + } else { + sh_video=demuxer->video->sh; + sh_video->fps=1000.0f; sh_video->frametime=0.001f; + + if (asf->asf_is_dvr_ms) { + sh_video->bih->biWidth = 0; + sh_video->bih->biHeight = 0; + } + } + } + + if(demuxer->audio->id!=-2){ + mp_tmsg(MSGT_DEMUXER,MSGL_V,"ASF: Searching for audio stream (id:%d).\n",demuxer->audio->id); + if(!ds_fill_buffer(demuxer->audio)){ + mp_msg(MSGT_DEMUXER, MSGL_INFO, "ASF: %s", + mp_gtext("No audio stream found -> no sound.\n")); + demuxer->audio->sh=NULL; + } + } + if(!demuxer->stream->seek) + demuxer->seekable=0; + + return demuxer; +} + + +static void demux_close_asf(demuxer_t *demuxer) { + struct asf_priv* asf = demuxer->priv; + + if (!asf) return; + + free(asf->aud_repdata_sizes); + free(asf->vid_repdata_sizes); + free(asf->packet); + free(asf); +} + +const demuxer_desc_t demuxer_desc_asf = { + "ASF demuxer", + "asf", + "ASF", + "A'rpi", + "ASF, WMV, WMA", + DEMUXER_TYPE_ASF, + 1, // safe autodetect + asf_check_header, + demux_asf_fill_buffer, + demux_open_asf, + demux_close_asf, + demux_seek_asf, + demux_asf_control +}; |