search for: theora_state

Hi, I'd like to add user-allocated frame memory to theora via a theora_user_yuv_out callback. An additional helper function (theora_user_buffer_is_freeable) would also be required. With these two functions, user applications could submit memory buffers directly to libtheora, which would reduce the number of frame copies in a typical application from two per frame to one per frame. I've

Enabling the following function in tests/noop.c: noop_test_decode () { theora_info ti; theora_state th; theora_info_init (&ti); theora_decode_init (&th, &ti); theora_clear (&th); theora_info_clear (&ti); } segfaults. The cause is that theora_decode_init() expects a theora_info structure which was previously initialized by passing actual bitstream data through theora...

I found a bug in theora_decode_init when I was implementing the decoder. theora_decode_init should be zeroing the theora state structure right? memset(th, 0, sizeof(theora_state)); // Erik -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora-dev/attachments/20040805/26350ca4/attachment.htm

...overed a bug which was preventing the player from working correctly, but which only showed up in my player; it didn't seem to affect the original player_example. I've now found the cause, which is indeed a bug in either player_example.c or libtheora itself. The example player declares a theora_state structure: theora_state td; Assumptions in libtheora assume that the element 'internal_encoder' (and maybe others) is initialised to NULL. This declaration doesn't guarantee that condition and this turned out to be the cause of problems I was experiencing in my player. A simpl...

Hello. How can I tell the number of frames in ogg/theora video file, without actually reading the file? Or, how can I tell its playing time (which is basically the same thing). I didn't find the information in THEORA_STATE, THEORA_INFO, but with the codec installed (illuminable oggcodecs), Windows Media Player shows the ogg/theora file playing time, before it starts playing the file. Thanks! LS

..._length attribute of the ogg_page op from encode has some reasonable value. But sizeof(*op->body) returns 1... The output I get is a big black screen... Any suggestions? Thanks and best regards, Florian (Stuttgart, GERMANY) #include <windows.h> #include "theora/theora.h" theora_state enc_state; int enc_width, enc_height; ogg_stream_state enc_stream; theora_state dec_state; int dec_width, dec_height; ogg_stream_state dec_stream; __declspec (dllexport) void startenc(int width, int height, int bitrate) { ogg_stream_init(&enc_stream, 290482); enc_width = width; enc_hei...

...ether the library contains memory leaks in its constructors and destructors. This is the output of 'make check' as at changeset:9700: make check-TESTS make[2]: Entering directory `/home/conrad/src/xiph.org/theora/tests' ---- + Initializing theora_info struct ... ---- + Initializing theora_state for encoding ... ---- + Clearing theora_state ... ---- + Clearing theora_info struct ... ==9720== ==9720== 256 bytes in 1 blocks are definitely lost in loss record 1 of 1 ==9720== at 0x1B90659D: malloc (vg_replace_malloc.c:130) ==9720== by 0x1B9357E4: oggpack_writeinit (bitwise.c:41) ==972...

..._offset = 0; int frame_y_offset = 0; int video_hzn = 25; int video_hzd = 1; int video_an = 1; int video_ad = 1; int video_r = 320000; int video_q = 16; int frame_counter = 250; signed char *yuvframe; int fetch_video_page( ogg_page *videopage, ogg_stream_state *to, theora_state *td ) { yuv_buffer yuv; ogg_packet op; yuv.y_width = video_x; yuv.y_height = video_y; yuv.y_stride = video_x; yuv.uv_width = video_x / 2; yuv.uv_height = video_y / 2; yuv.uv_stride = video_x / 2; yuv.y = yuvframe; yuv.u = yuvframe + video_x * video_y;...

....bz2 5add710b80b1cd8f3db9867d1fc9d151 libtheora-1.0alpha5.tar.gz aa471d76d2c245407752935b20cfc67f libtheora-1.0alpha5.zip Change summary: (libtheora-1.0alpha5 released 2005 August 20) * Fixed bitrate management bugs that caused popping and encode errors * Fixed a crash problem with the theora_state internals not being intialized properly. * new utility function: - theora_granule_shift() * dump_video example now makes YUV4MPEG files by default, so the results can be fed back to encoder_example and similar tools. The old behavior is restored through the '-r' switch. * ./c...

Well, as you may have seen from my previous messages, I'm doing a webcam stream program. The encoder is working well right now, but I'm having some hard time with the decoder. I know the parameters used in the encoder, and they are not gonna change, so I want to init the encoder directly into the client. The problem is that if I give the values to theora_info and after that I call

...find a frame that is acceptable (which means it's before the wanted frame, but not too much). But unfortunately I have have a lot of problems figuring out the frame number after each jump. When the decoder is correctly initialized, I can get the frame number by calling theora_granule_frame(theora_state *,ogg_int64_t). But what do I have to do while doing the jumps to find this? This is what the code currently does just after seeking to a new place in the file: // Clear the current ogg buffers, find a new page, and fill the buffers again int result; ogg_sync_reset(&sync); while ((result =...

....bz2 5add710b80b1cd8f3db9867d1fc9d151 libtheora-1.0alpha5.tar.gz aa471d76d2c245407752935b20cfc67f libtheora-1.0alpha5.zip Change summary: (libtheora-1.0alpha5 released 2005 August 20) * Fixed bitrate management bugs that caused popping and encode errors * Fixed a crash problem with the theora_state internals not being intialized properly. * new utility function: - theora_granule_shift() * dump_video example now makes YUV4MPEG files by default, so the results can be fed back to encoder_example and similar tools. The old behavior is restored through the '-r' switch. * ./c...

2008/10/29 Romain Beauxis <toots at rastageeks.org>: > > I am currently implementing theora for our application. > In our model for generating ogg streams, we may want to stop > a stream while not providing a new YUV data buffer for encoding. > > Current API doesn't allow such thing, since the eos flag is set by the > packetout function only when the last_p parameter

...oggSyncState; ogg_page oggPage; ogg_packet oggPacket; ogg_stream_state vorbisStreamState; ogg_stream_state theoraStreamState; theora_info theoraInfo; theora_comment theoraComment; theora_state theoraState; int theoraPageCount; yuv_buffer yuvBuffer; std::ifstream videoStream; void rewind (); void initMovie (); void exitMovie ();...

...PREVIEW_KEYFRAME_INTERVAL 3 #include "logging.h" +#include <png.h> - typedef struct _theora_codec_tag { theora_info ti; @@ -40,9 +41,14 @@ int granule_shift; ogg_int64_t last_iframe; ogg_int64_t prev_granulepos; +#ifdef WITH_PNG + theora_state td; + video_preview_t *video_preview; + yuv_buffer yuv; + int frame_count; +#endif } theora_codec_t; - static void theora_codec_free (ogg_state_t *ogg_info, ogg_codec_t *codec) { theora_codec_t *theora = codec->specific; @@ -50,8 +56,17 @@ DEBUG0 ("freei...

Updated version of video preview covering frame writing every 3 keyframe and a xsl typo. Best regards :) kysucix -- Make things as simple as possible, but no simpler. - Albert Einstein

Hi. Here it is my patch to put a video preview of a theora stream in status.xsl. I just added a: <video-preview>1</video-preview> parameters in icecast.xml.in that control the previewing function. It encodes a png in $webroot/$mountname.tmp and then move it to $webroot/$mountname.png As for now it saves a frame every theora keyframe, which is probably too heavy for the server but

...nt iVideoAspNum = 1; int iVideoAspDen = 1; int iVideoBitrate = 400000; int iVideoQuality = 15; int iFrameCounter; unsigned char* ucYUVframe = NULL; FILE* pfOGGclip = NULL; ogg_stream_state tOGGstreamState; ogg_page tOGGpage; ogg_packet tOGGpacket; theora_state tTheoraState; theora_info tTheoraInfo; theora_comment tTheoraComment; yuv_buffer tYUVbuffer; int OGG_Init( void ) { printf( "+++ OGG_Init() \n" ); srand( time( NULL ) ); /* Set up Theora encoder */ /* Theora has a divisible-by-sixteen restriction f...