From 2a8494d031303d94193992e423f4b0010078fa0d Mon Sep 17 00:00:00 2001 From: pacman Date: Tue, 6 Jun 2006 23:34:21 +0000 Subject: Patch from John Donaghy: "fix for audio and video in dvr-ms asf files" git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18610 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/asfheader.c | 115 ++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 90 insertions(+), 25 deletions(-) (limited to 'libmpdemux/asfheader.c') diff --git a/libmpdemux/asfheader.c b/libmpdemux/asfheader.c index 36f05a7c25..2c5691ed28 100644 --- a/libmpdemux/asfheader.c +++ b/libmpdemux/asfheader.c @@ -34,6 +34,8 @@ #define ASF_GUID_PREFIX_file_header 0x8CABDCA1 #define ASF_GUID_PREFIX_content_desc 0x75b22633 #define ASF_GUID_PREFIX_stream_group 0x7bf875ce +#define ASF_GUID_PREFIX_ext_audio_stream 0x31178C9D +#define ASF_GUID_PREFIX_ext_stream_embed_stream_header 0x3AFB65E2 /* const char asf_audio_stream_guid[16] = {0x40, 0x9e, 0x69, 0xf8, @@ -51,6 +53,12 @@ const char asf_stream_group_guid[16] = {0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2}; const char asf_data_chunk_guid[16] = {0x36, 0x26, 0xb2, 0x75, 0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c}; +const char asf_ext_stream_embed_stream_header[16] = {0xe2, 0x65, 0xfb, 0x3a, + 0xef, 0x47, 0xf2, 0x40, 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43}; +const char asf_ext_stream_audio[16] = {0x9d, 0x8c, 0x17, 0x31, + 0xe1, 0x03, 0x28, 0x45, 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03}; +const char asf_ext_stream_header[16] = {0xCB, 0xA5, 0xE6, 0x14, + 0x72, 0xC6, 0x32, 0x43, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A}; // the variable string is modify in this function @@ -77,6 +85,10 @@ static char* asf_chunk_type(unsigned char* guid) { switch(ASF_LOAD_GUID_PREFIX(guid)){ case ASF_GUID_PREFIX_audio_stream: return "guid_audio_stream"; + case ASF_GUID_PREFIX_ext_audio_stream: + return "guid_ext_audio_stream"; + case ASF_GUID_PREFIX_ext_stream_embed_stream_header: + return "guid_ext_stream_embed_stream_header"; case ASF_GUID_PREFIX_video_stream: return "guid_video_stream"; case ASF_GUID_PREFIX_audio_conceal_none: @@ -144,6 +156,42 @@ int find_asf_guid(char *buf, const char *guid, int cur_pos, int buf_len) return -1; } +static int find_backwards_asf_guid(char *buf, const char *guid, int cur_pos) +{ + int i; + for (i=cur_pos-16; i>0; i--) { + if (memcmp(&buf[i], guid, 16) == 0) + return i + 16 + 8; // point after guid + length + } + return -1; +} + +static int asf_init_audio_stream(demuxer_t *demuxer,struct asf_priv* asf, sh_audio_t* sh_audio, ASF_stream_header_t *streamh, int *ppos, uint8_t** buf, char *hdr, unsigned int hdr_len) +{ + uint8_t *buffer = *buf; + int pos = *ppos; + + sh_audio->wf=calloc((streamh->type_sizetype_size,1); + memcpy(sh_audio->wf,buffer,streamh->type_size); + le2me_WAVEFORMATEX(sh_audio->wf); + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V); + if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){ + buffer = &hdr[pos]; + pos += streamh->stream_size; + if (pos > hdr_len) return 0; + asf->scrambling_h=buffer[0]; + asf->scrambling_w=(buffer[2]<<8)|buffer[1]; + asf->scrambling_b=(buffer[4]<<8)|buffer[3]; + if(asf->scrambling_b>0){ + asf->scrambling_w/=asf->scrambling_b; + } + } else { + asf->scrambling_b=asf->scrambling_h=asf->scrambling_w=1; + } + mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf->scrambling_h,asf->scrambling_w,asf->scrambling_b); + return 1; +} + int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ int hdr_len = asf->header.objh.size - sizeof(asf->header); char *hdr = NULL; @@ -156,6 +204,9 @@ int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ int best_video = -1; int best_audio = -1; uint64_t data_len; + ASF_stream_header_t *streamh; + uint8_t *buffer; + int audio_pos=0; if(hdr_len < 0) { mp_msg(MSGT_HEADER, MSGL_FATAL, "Header size is too small.\n"); @@ -179,12 +230,38 @@ int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ goto err_out; } + if ((pos = find_asf_guid(hdr, asf_ext_stream_audio, pos, hdr_len)) >= 0) + { + // Special case: found GUID for dvr-ms audio. + // Now skip back to associated stream header. + int sh_pos=0; + + sh_pos = find_backwards_asf_guid(hdr, asf_stream_header_guid, pos); + + if (sh_pos > 0) { + mp_msg(MSGT_HEADER, MSGL_V, "read_asf_header found dvr-ms audio stream header pos=%d\n", sh_pos); + // found audio stream header - following code reads header and + // initializes audio stream. + audio_pos = pos - 16 - 8; + streamh = (ASF_stream_header_t *)&hdr[sh_pos]; + le2me_ASF_stream_header_t(streamh); + audio_pos += 64; //16+16+4+4+4+16+4; + buffer = &hdr[audio_pos]; + sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F); + ++audio_streams; + if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &audio_pos, &buffer, hdr, hdr_len)) + goto len_err_out; + } + } // find stream headers - pos = 0; + // only reset pos if we didnt find dvr_ms audio stream + // if we did find it then we want to avoid reading its header twice + if (audio_pos == 0) + pos = 0; + while ((pos = find_asf_guid(hdr, asf_stream_header_guid, pos, hdr_len)) >= 0) { - ASF_stream_header_t *streamh = (ASF_stream_header_t *)&hdr[pos]; - uint8_t *buffer; + streamh = (ASF_stream_header_t *)&hdr[pos]; pos += sizeof(ASF_stream_header_t); if (pos > hdr_len) goto len_err_out; le2me_ASF_stream_header_t(streamh); @@ -206,24 +283,8 @@ int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ case ASF_GUID_PREFIX_audio_stream: { sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F); ++audio_streams; - sh_audio->wf=calloc((streamh->type_sizetype_size,1); - memcpy(sh_audio->wf,buffer,streamh->type_size); - le2me_WAVEFORMATEX(sh_audio->wf); - if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V); - if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){ - buffer = &hdr[pos]; - pos += streamh->stream_size; - if (pos > hdr_len) goto len_err_out; - asf->scrambling_h=buffer[0]; - asf->scrambling_w=(buffer[2]<<8)|buffer[1]; - asf->scrambling_b=(buffer[4]<<8)|buffer[3]; - if(asf->scrambling_b>0){ - asf->scrambling_w/=asf->scrambling_b; - } - } else { - asf->scrambling_b=asf->scrambling_h=asf->scrambling_w=1; - } - mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf->scrambling_h,asf->scrambling_w,asf->scrambling_b); + if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &pos, &buffer, hdr, hdr_len)) + goto len_err_out; //if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F; break; } @@ -235,10 +296,14 @@ int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ sh_video->bih=calloc((lenbih,&buffer[4+4+1+2],len); le2me_BITMAPINFOHEADER(sh_video->bih); - if (sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' ')) - mp_msg(MSGT_DEMUXER, MSGL_WARN, MSGTR_MPDEMUX_ASFHDR_DVRWantsLibavformat); - //sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale; - //sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate; + if (sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' ')) { + //mp_msg(MSGT_DEMUXER, MSGL_WARN, MSGTR_MPDEMUX_ASFHDR_DVRWantsLibavformat); + //sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale; + //sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate; + asf->asf_frame_state=-1; + asf->asf_frame_start_found=0; + asf->asf_is_dvr_ms=1; + } else asf->asf_is_dvr_ms=0; if( mp_msg_test(MSGT_DEMUX,MSGL_V) ) print_video_header(sh_video->bih, MSGL_V); //asf_video_id=streamh.stream_no & 0x7F; //if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F; -- cgit v1.2.3