search for: ogg_stream_pagein

Hey all, If my understanding is right, there's a serious big in vorbisfile.c, in the routine _fetch_headers(), which will only show up when comment packet spans multiple pages. The code to read the first 3 Vorbis packets ogg_stream_pagein() once, then calls ogg_stream_packetout(). The problem is that ogg_stream_pagein() only adds a single page to the ogg stream state, whereas ogg_stream_packetout(), loops until it finds a non-255 lacing value. So, if the comment packet is larger than one page, all lacing values will be 255, and o...

It seems to me that running ogg_sync_pageout doesn't automatically advance the page. This is good if you haven't worked with the given page, makes coding somewhat easier. However, when does a page advance. Is it after a call to ogg_stream_pagein? On a side note, I need to do seeking on top of libvorbis, I'd love to use vorbisfile but sadly I can't. Is there a reasonable way to "rewind" without calling various resets and returning to the beginning of the file? It looks like I'd have to call: Ogg_sync_reset Vorbis_syn...

Hello everyone, I'm programming something using ogg vorbis and i was wondering how I could get a packet from a logical bitstream when this packet is over several pages. let's say I made a call to ogg_stream_pagein, then ogg_stream_packetout, but the packet is incomplete and continued in the next page(s). If I get the following page and I call ogg_stream_pagein again, how can i get the beginning of my packet back. It seems to that only one page is accessible at a time through an ogg_stream_state... ***...

...he_ogg_stream_state, 0); do { if (ogg_sync_pageout(&the_ogg_sync_state, &the_ogg_page) == 1) { printf("Decode Page\n"); send_to_my_decoder( the_ogg_page.body, the_ogg_page.body_len ); ogg_stream_pagein(&the_ogg_stream_state, &the_ogg_page); ogg_stream_packetout(&the_ogg_stream_state, &the_ogg_packet); printf("Decode Packet\n"); send_to_my_decoder( the_ogg_packet.packet, the_ogg_packet.bytes );...

...-----+------------+ | xxxxxx|xxxxxxxxxxxxx|xxxxxxxxxxxxx|xxxxxxx | ^ | Say I reset the sync/stream states and fseek to where the arrow is. Then I ogg_sync_pageout() and fill the sync buffer until it syncs on page 6 and ogg_sync_pageout() returns > 0. Then I ogg_stream_pagein(). It recognizes that a reset happened -- "if(pageno!=os->pageno){" -- then inside checks the 'continued' flag and eats up all the segments of the packet in page 6, then 'bodysize' is 0 and the function returns. Then I ogg_stream_packetout() and it returns 0 because t...

...ence to `SDL_UnlockSurface' player_example.c:(.text+0xb05): undefined reference to `SDL_UnlockYUVOverlay' player_example.c:(.text+0xb1a): undefined reference to `SDL_DisplayYUVOverlay' /tmp/ccpyle3c.o: In function `queue_page': player_example.c:(.text+0xce4): undefined reference to `ogg_stream_pagein' player_example.c:(.text+0xd00): undefined reference to `ogg_stream_pagein' /tmp/ccpyle3c.o: In function `main': player_example.c:(.text+0xe17): undefined reference to `ogg_sync_init' player_example.c:(.text+0xe23): undefined reference to `vorbis_info_init' player_example.c:(.te...

ogg.k.ogg.k at googlemail.com wrote: >> New data accomulate in ogg_stream_state use ogg_stream_pagein. >> > > Check that the pages are increasing in timestamps (eg, run oggz-validate > from oggz-tools, from www.annodex.net). > oggz-validate have empty output with my videofile. > Check that you're not pulling only one packet per page (eg, loop over > packetout and...

Just to make sure, if I'm mixing 2 streams at the page level, and using ogg_stream_pagein() and ogg_stream_packetout() to extract them, I need two ogg_stream_states, one for each logical stream, and I need to ensure that each ogg_stream_state only sees pages of it's own type, is that right? - Martin --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:...

Hello Conrad, I'm trying to seek the way you told but I'm facing a problem. ogg_page_packets returns 164 and following code returns 189. Shouldn't it be the same, what does that means ? int res; while (true) { res = ogg_stream_packetout(&os, &op); if (res == 1) nPackets++; if (res == -1)

...ith precached decoded audiobuffers). Not only the Theora decoding and the YUV2RGB stuff takes time and those seem to be not the main reason why audio gets stalled (the vorbis decoder is in the same loop and it is called very frequently, also when heavy work load on theora). The problem occures when ogg_stream_pagein() is called. In case of the theora stream it has to be called about 20-30 times successively... and this takes up to 30ms (for one frame)!! During this time BOTH decoders are 20-30 times called but because of no data stalled. So I don't understand why these ogg_stream_pagein() calls take so m...

...nc_wrote' decoder_example.o(.text+0x70): undefined reference to `ogg_sync_pageout' decoder_example.o(.text+0x8c): undefined reference to `ogg_page_serialno' decoder_example.o(.text+0xa8): undefined reference to `ogg_stream_init' decoder_example.o(.text+0xc8): undefined reference to `ogg_stream_pagein' decoder_example.o(.text+0xe0): undefined reference to `ogg_stream_packetout' decoder_example.o(.text+0x114): undefined reference to `ogg_sync_pageout' decoder_example.o(.text+0x138): undefined reference to `ogg_sync_buffer' decoder_example.o(.text+0x168): undefined reference to `og...

ok, I'm aware that vo_open cant be used at the same time as other functions such as ogg_sync_wrote, ogg_sync_pageout, ogg_stream_pagein, ogg_stream_packetout and vorbis_synthesis_headerin. In order to get information from the bitstream i've been using this method because it's fast and doesn't require decoding of the stream. But, i can only retrieve the average bitrate of the ogg stream with the vorbis_info struct...

...ageCount = -1; int flgPacketsConsumed = 0; int packetCount = -1; int flgEOSPage = 0; while(!flgBailError) { dprintf("Page: %d\n", pageCount); if (pageCount != -1) { if (pageCount == 0) { // FIXME: Silly pageCount used to indicate serial number change // because ogg_stream_pagein does braindead release on error and // ogg_page_bos() doesn't seem to work for a concatenated stream. dprintf("Beginning of stream found\n"); // Use hex to match ogginfo return dprintf("Setting serial number: %x\n", ogg_page_serialno(og)); ogg_stream_reset_serialno(os...

...nb_read = fread(data, 1, 512, fin); ogg_sync_wrote(&oy, nb_read); } nPages++; } while (ogg_page_granulepos(&og) < position); printf("ogg_page_packets: %d\n", ogg_page_packets(&og)); // Add page to the bitstream ogg_stream_pagein(&os, &og); printf("ogg_page_packets: %d\n", ogg_page_packets(&og)); /* Packet counter */ int res; while (true) { res = ogg_stream_packetout(&os, &op); if (res == 1) nPackets++; if (res == -1) print...

Hi All, I'm relatively new to Ogg and Vorbis and I've hit a pretty puzzling issue, and I'm wondering if a veteran could help me out. I'm attempting to decode a chained live Ogg Vorbis stream. The primary issue is that the source does not exactly follow validation (I have no control of this). The stream switches from a prerecorded segment, to a live segment, back to a prerecorded

...library to easily create command line tools to cut/cat video-files and to extract and join the video and audio stream etc. However, I started the project and found some very strange behaviors: I stored some ogg_packet objects (which are created on the heap) in a list. When I make several calls to ogg_stream_pagein() and ogg_stream_packetout(), the packets are accidentally overwritten by some nonsense. I am not sure what really happens, but I guess the libogg writers wanted to reduce the memory copy to a minimum, so that there are pointers (packet), which will be reused or whatever. My question is: how d...

...he beginning and not the end. (packets = 0 continued = 1) - You deliver the next page which contains the end of the page before and some more (packets >= 1 ) Now ogglib returns the end of this packet as a complete packet because the check if there was a hole is only done once in ogg_stream_pagein Best regards, Tobias --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed...

...ata */ /* I handle the initial header first instead of just having the code read all three Vorbis headers at once because reading the initial header is an easy way to identify a Vorbis bitstream and it's useful to see that functionality seperated out. */ vorbis_info_init(&vi); if(ogg_stream_pagein(&os,&og)<0){ /* error; stream version mismatch perhaps */} if(ogg_stream_packetout(&os,&op)!=1){ /* no page? must not be vorbis */} if(vorbis_info_headerin(&vi,&op)<0){ /* error case; not a vorbis header */} /* At this point, we're sure we're Vorbis. We'v...

...ogg_sync_pageout(&oy,&audio_page)>0) { if (stream_init == 0) { ogg_stream_init(&os, ogg_page_serialno(&audio_page)); stream_init = 1; } queue_page(&audio_page); while(ogg_stream_packetout(&os,&op)>0) { int b; ogg_stream_pagein(&os, &audio_page); int len=(audio_page.body_len-4)/FRAMES_PACKET; char *datos=(char*)op.packet; char m[100]; sprintf(m,"paq %d",op.packetno); System::Console::WriteLine(gcnew String(m)); int t=((int *)datos)[0]; for(int i=0...

...`ogg_page_serialno' .libs/vorbisfile.o(.text+0x80f):vorbisfile.c: undefined reference to `ogg_stream_reset_serialno' .libs/vorbisfile.o(.text+0x821):vorbisfile.c: undefined reference to `ogg_stream_reset_serialno' .libs/vorbisfile.o(.text+0x83a):vorbisfile.c: undefined reference to `ogg_stream_pagein' .libs/vorbisfile.o(.text+0x849):vorbisfile.c: undefined reference to `ogg_stream_pagein' . . . It seems it cannot find libogg to link with. What arguments should I tell libvorbis's configure to make /mingw/libogg* accessible to it? Thanks in advance.