cap_ogg.c

   1 #ifndef _MSC_VER
   2 #include <stdint.h>
   3 #endif
   4 #include <sys/types.h>
   5
   6 #include "quakedef.h"
   7 #include "client.h"
   8 #include "cap_ogg.h"
   9
  10 // video capture cvars
  11 static cvar_t cl_capturevideo_ogg_theora_quality = {CVAR_SAVE, "cl_capturevideo_ogg_theora_quality", "32", "video quality factor (0 to 63), or -1 to use bitrate only; higher is better"};
  12 static cvar_t cl_capturevideo_ogg_theora_bitrate = {CVAR_SAVE, "cl_capturevideo_ogg_theora_bitrate", "-1", "video bitrate (45 to 2000 kbps), or -1 to use quality only; higher is better"};
  13 static cvar_t cl_capturevideo_ogg_theora_keyframe_bitrate_multiplier = {CVAR_SAVE, "cl_capturevideo_ogg_theora_keyframe_bitrate_multiplier", "1.5", "how much more bit rate to use for keyframes, specified as a factor of at least 1"};
  14 static cvar_t cl_capturevideo_ogg_theora_keyframe_maxinterval = {CVAR_SAVE, "cl_capturevideo_ogg_theora_keyframe_maxinterval", "64", "maximum keyframe interval (1 to 1000)"};
  15 static cvar_t cl_capturevideo_ogg_theora_keyframe_mininterval = {CVAR_SAVE, "cl_capturevideo_ogg_theora_keyframe_mininterval", "8", "minimum keyframe interval (1 to 1000)"};
  16 static cvar_t cl_capturevideo_ogg_theora_keyframe_auto_threshold = {CVAR_SAVE, "cl_capturevideo_ogg_theora_keyframe_auto_threshold", "80", "threshold for key frame decision (0 to 100)"};
  17 static cvar_t cl_capturevideo_ogg_theora_noise_sensitivity = {CVAR_SAVE, "cl_capturevideo_ogg_theora_noise_sensitivity", "1", "video noise sensitivity (0 to 6); lower is better"};
  18 static cvar_t cl_capturevideo_ogg_theora_sharpness = {CVAR_SAVE, "cl_capturevideo_ogg_theora_sharpness", "0", "sharpness (0 to 2); lower is sharper"};
  19 static cvar_t cl_capturevideo_ogg_vorbis_quality = {CVAR_SAVE, "cl_capturevideo_ogg_vorbis_quality", "1", "audio quality (-1 to 10); higher is better"};
  20
  21 // ogg.h stuff
  22 #ifdef _MSC_VER
  23 typedef __int16 ogg_int16_t;
  24 typedef unsigned __int16 ogg_uint16_t;
  25 typedef __int32 ogg_int32_t;
  26 typedef unsigned __int32 ogg_uint32_t;
  27 typedef __int64 ogg_int64_t;
  28 #else
  29 typedef int16_t ogg_int16_t;
  30 typedef uint16_t ogg_uint16_t;
  31 typedef int32_t ogg_int32_t;
  32 typedef uint32_t ogg_uint32_t;
  33 typedef int64_t ogg_int64_t;
  34 #endif
  35
  36 typedef struct {
  37   long endbyte;
  38   int  endbit;
  39
  40   unsigned char *buffer;
  41   unsigned char *ptr;
  42   long storage;
  43 } oggpack_buffer;
  44
  45 /* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/
  46
  47 typedef struct {
  48   unsigned char *header;
  49   long header_len;
  50   unsigned char *body;
  51   long body_len;
  52 } ogg_page;
  53
  54 /* ogg_stream_state contains the current encode/decode state of a logical
  55    Ogg bitstream **********************************************************/
  56
  57 typedef struct {
  58   unsigned char   *body_data;    /* bytes from packet bodies */
  59   long    body_storage;          /* storage elements allocated */
  60   long    body_fill;             /* elements stored; fill mark */
  61   long    body_returned;         /* elements of fill returned */
  62
  63
  64   int     *lacing_vals;      /* The values that will go to the segment table */
  65   ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact
  66                                 this way, but it is simple coupled to the
  67                                 lacing fifo */
  68   long    lacing_storage;
  69   long    lacing_fill;
  70   long    lacing_packet;
  71   long    lacing_returned;
  72
  73   unsigned char    header[282];      /* working space for header encode */
  74   int              header_fill;
  75
  76   int     e_o_s;          /* set when we have buffered the last packet in the
  77                              logical bitstream */
  78   int     b_o_s;          /* set after we've written the initial page
  79                              of a logical bitstream */
  80   long    serialno;
  81   long    pageno;
  82   ogg_int64_t  packetno;      /* sequence number for decode; the framing
  83                              knows where there's a hole in the data,
  84                              but we need coupling so that the codec
  85                              (which is in a seperate abstraction
  86                              layer) also knows about the gap */
  87   ogg_int64_t   granulepos;
  88
  89 } ogg_stream_state;
  90
  91 /* ogg_packet is used to encapsulate the data and metadata belonging
  92    to a single raw Ogg/Vorbis packet *************************************/
  93
  94 typedef struct {
  95   unsigned char *packet;
  96   long  bytes;
  97   long  b_o_s;
  98   long  e_o_s;
  99
 100   ogg_int64_t  granulepos;
 101
 102   ogg_int64_t  packetno;     /* sequence number for decode; the framing
 103                                 knows where there's a hole in the data,
 104                                 but we need coupling so that the codec
 105                                 (which is in a seperate abstraction
 106                                 layer) also knows about the gap */
 107 } ogg_packet;
 108
 109 typedef struct {
 110   unsigned char *data;
 111   int storage;
 112   int fill;
 113   int returned;
 114
 115   int unsynced;
 116   int headerbytes;
 117   int bodybytes;
 118 } ogg_sync_state;
 119
 120 /* Ogg BITSTREAM PRIMITIVES: encoding **************************/
 121
 122 static int      (*qogg_stream_packetin) (ogg_stream_state *os, ogg_packet *op);
 123 static int      (*qogg_stream_pageout) (ogg_stream_state *os, ogg_page *og);
 124 static int      (*qogg_stream_flush) (ogg_stream_state *os, ogg_page *og);
 125
 126 /* Ogg BITSTREAM PRIMITIVES: general ***************************/
 127
 128 static int      (*qogg_stream_init) (ogg_stream_state *os,int serialno);
 129 static int      (*qogg_stream_clear) (ogg_stream_state *os);
 130 static ogg_int64_t  (*qogg_page_granulepos) (ogg_page *og);
 131
 132 // end of ogg.h stuff
 133
 134 // vorbis/codec.h stuff
 135 typedef struct vorbis_info{
 136   int version;
 137   int channels;
 138   long rate;
 139
 140   /* The below bitrate declarations are *hints*.
 141      Combinations of the three values carry the following implications:
 142
 143      all three set to the same value:
 144        implies a fixed rate bitstream
 145      only nominal set:
 146        implies a VBR stream that averages the nominal bitrate.  No hard
 147        upper/lower limit
 148      upper and or lower set:
 149        implies a VBR bitstream that obeys the bitrate limits. nominal
 150        may also be set to give a nominal rate.
 151      none set:
 152        the coder does not care to speculate.
 153   */
 154
 155   long bitrate_upper;
 156   long bitrate_nominal;
 157   long bitrate_lower;
 158   long bitrate_window;
 159
 160   void *codec_setup;
 161 } vorbis_info;
 162
 163 /* vorbis_dsp_state buffers the current vorbis audio
 164    analysis/synthesis state.  The DSP state belongs to a specific
 165    logical bitstream ****************************************************/
 166 typedef struct vorbis_dsp_state{
 167   int analysisp;
 168   vorbis_info *vi;
 169
 170   float **pcm;
 171   float **pcmret;
 172   int      pcm_storage;
 173   int      pcm_current;
 174   int      pcm_returned;
 175
 176   int  preextrapolate;
 177   int  eofflag;
 178
 179   long lW;
 180   long W;
 181   long nW;
 182   long centerW;
 183
 184   ogg_int64_t granulepos;
 185   ogg_int64_t sequence;
 186
 187   ogg_int64_t glue_bits;
 188   ogg_int64_t time_bits;
 189   ogg_int64_t floor_bits;
 190   ogg_int64_t res_bits;
 191
 192   void       *backend_state;
 193 } vorbis_dsp_state;
 194
 195 typedef struct vorbis_block{
 196   /* necessary stream state for linking to the framing abstraction */
 197   float  **pcm;       /* this is a pointer into local storage */
 198   oggpack_buffer opb;
 199
 200   long  lW;
 201   long  W;
 202   long  nW;
 203   int   pcmend;
 204   int   mode;
 205
 206   int         eofflag;
 207   ogg_int64_t granulepos;
 208   ogg_int64_t sequence;
 209   vorbis_dsp_state *vd; /* For read-only access of configuration */
 210
 211   /* local storage to avoid remallocing; it's up to the mapping to
 212      structure it */
 213   void               *localstore;
 214   long                localtop;
 215   long                localalloc;
 216   long                totaluse;
 217   struct alloc_chain *reap;
 218
 219   /* bitmetrics for the frame */
 220   long glue_bits;
 221   long time_bits;
 222   long floor_bits;
 223   long res_bits;
 224
 225   void *internal;
 226
 227 } vorbis_block;
 228
 229 /* vorbis_block is a single block of data to be processed as part of
 230 the analysis/synthesis stream; it belongs to a specific logical
 231 bitstream, but is independant from other vorbis_blocks belonging to
 232 that logical bitstream. *************************************************/
 233
 234 struct alloc_chain{
 235   void *ptr;
 236   struct alloc_chain *next;
 237 };
 238
 239 /* vorbis_info contains all the setup information specific to the
 240    specific compression/decompression mode in progress (eg,
 241    psychoacoustic settings, channel setup, options, codebook
 242    etc). vorbis_info and substructures are in backends.h.
 243 *********************************************************************/
 244
 245 /* the comments are not part of vorbis_info so that vorbis_info can be
 246    static storage */
 247 typedef struct vorbis_comment{
 248   /* unlimited user comment fields.  libvorbis writes 'libvorbis'
 249      whatever vendor is set to in encode */
 250   char **user_comments;
 251   int   *comment_lengths;
 252   int    comments;
 253   char  *vendor;
 254
 255 } vorbis_comment;
 256
 257
 258 /* libvorbis encodes in two abstraction layers; first we perform DSP
 259    and produce a packet (see docs/analysis.txt).  The packet is then
 260    coded into a framed OggSquish bitstream by the second layer (see
 261    docs/framing.txt).  Decode is the reverse process; we sync/frame
 262    the bitstream and extract individual packets, then decode the
 263    packet back into PCM audio.
 264
 265    The extra framing/packetizing is used in streaming formats, such as
 266    files.  Over the net (such as with UDP), the framing and
 267    packetization aren't necessary as they're provided by the transport
 268    and the streaming layer is not used */
 269
 270 /* Vorbis PRIMITIVES: general ***************************************/
 271
 272 static void     (*qvorbis_info_init) (vorbis_info *vi);
 273 static void     (*qvorbis_info_clear) (vorbis_info *vi);
 274 static void     (*qvorbis_comment_init) (vorbis_comment *vc);
 275 static void     (*qvorbis_comment_clear) (vorbis_comment *vc);
 276
 277 static int      (*qvorbis_block_init) (vorbis_dsp_state *v, vorbis_block *vb);
 278 static int      (*qvorbis_block_clear) (vorbis_block *vb);
 279 static void     (*qvorbis_dsp_clear) (vorbis_dsp_state *v);
 280 static double   (*qvorbis_granule_time) (vorbis_dsp_state *v,
 281                                     ogg_int64_t granulepos);
 282
 283 /* Vorbis PRIMITIVES: analysis/DSP layer ****************************/
 284
 285 static int      (*qvorbis_analysis_init) (vorbis_dsp_state *v,vorbis_info *vi);
 286 static int      (*qvorbis_commentheader_out) (vorbis_comment *vc, ogg_packet *op);
 287 static int      (*qvorbis_analysis_headerout) (vorbis_dsp_state *v,
 288                                           vorbis_comment *vc,
 289                                           ogg_packet *op,
 290                                           ogg_packet *op_comm,
 291                                           ogg_packet *op_code);
 292 static float ** (*qvorbis_analysis_buffer) (vorbis_dsp_state *v,int vals);
 293 static int      (*qvorbis_analysis_wrote) (vorbis_dsp_state *v,int vals);
 294 static int      (*qvorbis_analysis_blockout) (vorbis_dsp_state *v,vorbis_block *vb);
 295 static int      (*qvorbis_analysis) (vorbis_block *vb,ogg_packet *op);
 296
 297 static int      (*qvorbis_bitrate_addblock) (vorbis_block *vb);
 298 static int      (*qvorbis_bitrate_flushpacket) (vorbis_dsp_state *vd,
 299                                            ogg_packet *op);
 300
 301 // end of vorbis/codec.h stuff
 302
 303 // vorbisenc.h stuff
 304 static int (*qvorbis_encode_init_vbr) (vorbis_info *vi,
 305                                   long channels,
 306                                   long rate,
 307
 308                                   float base_quality /* quality level from 0. (lo) to 1. (hi) */
 309                                   );
 310 // end of vorbisenc.h stuff
 311
 312 // theora.h stuff
 313 typedef struct {
 314     int   y_width;      /**< Width of the Y' luminance plane */
 315     int   y_height;     /**< Height of the luminance plane */
 316     int   y_stride;     /**< Offset in bytes between successive rows */
 317
 318     int   uv_width;     /**< Width of the Cb and Cr chroma planes */
 319     int   uv_height;    /**< Height of the chroma planes */
 320     int   uv_stride;    /**< Offset between successive chroma rows */
 321     unsigned char *y;   /**< Pointer to start of luminance data */
 322     unsigned char *u;   /**< Pointer to start of Cb data */
 323     unsigned char *v;   /**< Pointer to start of Cr data */
 324
 325 } yuv_buffer;
 326
 327 /**
 328  * A Colorspace.
 329  */
 330 typedef enum {
 331   OC_CS_UNSPECIFIED,    /**< The colorspace is unknown or unspecified */
 332   OC_CS_ITU_REC_470M,   /**< This is the best option for 'NTSC' content */
 333   OC_CS_ITU_REC_470BG,  /**< This is the best option for 'PAL' content */
 334   OC_CS_NSPACES         /**< This marks the end of the defined colorspaces */
 335 } theora_colorspace;
 336
 337 /**
 338  * A Chroma subsampling
 339  *
 340  * These enumerate the available chroma subsampling options supported
 341  * by the theora format. See Section 4.4 of the specification for
 342  * exact definitions.
 343  */
 344 typedef enum {
 345   OC_PF_420,    /**< Chroma subsampling by 2 in each direction (4:2:0) */
 346   OC_PF_RSVD,   /**< Reserved value */
 347   OC_PF_422,    /**< Horizonatal chroma subsampling by 2 (4:2:2) */
 348   OC_PF_444,    /**< No chroma subsampling at all (4:4:4) */
 349 } theora_pixelformat;
 350 /**
 351  * Theora bitstream info.
 352  * Contains the basic playback parameters for a stream,
 353  * corresponding to the initial 'info' header packet.
 354  *
 355  * Encoded theora frames must be a multiple of 16 in width and height.
 356  * To handle other frame sizes, a crop rectangle is specified in
 357  * frame_height and frame_width, offset_x and * offset_y. The offset
 358  * and size should still be a multiple of 2 to avoid chroma sampling
 359  * shifts. Offset values in this structure are measured from the
 360  * upper left of the image.
 361  *
 362  * Frame rate, in frames per second, is stored as a rational
 363  * fraction. Aspect ratio is also stored as a rational fraction, and
 364  * refers to the aspect ratio of the frame pixels, not of the
 365  * overall frame itself.
 366  *
 367  * See <a href="http://svn.xiph.org/trunk/theora/examples/encoder_example.c">
 368  * examples/encoder_example.c</a> for usage examples of the
 369  * other paramters and good default settings for the encoder parameters.
 370  */
 371 typedef struct {
 372   ogg_uint32_t  width;      /**< encoded frame width  */
 373   ogg_uint32_t  height;     /**< encoded frame height */
 374   ogg_uint32_t  frame_width;    /**< display frame width  */
 375   ogg_uint32_t  frame_height;   /**< display frame height */
 376   ogg_uint32_t  offset_x;   /**< horizontal offset of the displayed frame */
 377   ogg_uint32_t  offset_y;   /**< vertical offset of the displayed frame */
 378   ogg_uint32_t  fps_numerator;      /**< frame rate numerator **/
 379   ogg_uint32_t  fps_denominator;    /**< frame rate denominator **/
 380   ogg_uint32_t  aspect_numerator;   /**< pixel aspect ratio numerator */
 381   ogg_uint32_t  aspect_denominator; /**< pixel aspect ratio denominator */
 382   theora_colorspace colorspace;     /**< colorspace */
 383   int           target_bitrate;     /**< nominal bitrate in bits per second */
 384   int           quality;  /**< Nominal quality setting, 0-63 */
 385   int           quick_p;  /**< Quick encode/decode */
 386
 387   /* decode only */
 388   unsigned char version_major;
 389   unsigned char version_minor;
 390   unsigned char version_subminor;
 391
 392   void *codec_setup;
 393
 394   /* encode only */
 395   int           dropframes_p;
 396   int           keyframe_auto_p;
 397   ogg_uint32_t  keyframe_frequency;
 398   ogg_uint32_t  keyframe_frequency_force;  /* also used for decode init to
 399                                               get granpos shift correct */
 400   ogg_uint32_t  keyframe_data_target_bitrate;
 401   ogg_int32_t   keyframe_auto_threshold;
 402   ogg_uint32_t  keyframe_mindistance;
 403   ogg_int32_t   noise_sensitivity;
 404   ogg_int32_t   sharpness;
 405
 406   theora_pixelformat pixelformat;   /**< chroma subsampling mode to expect */
 407
 408 } theora_info;
 409
 410 /** Codec internal state and context.
 411  */
 412 typedef struct{
 413   theora_info *i;
 414   ogg_int64_t granulepos;
 415
 416   void *internal_encode;
 417   void *internal_decode;
 418
 419 } theora_state;
 420
 421 /**
 422  * Comment header metadata.
 423  *
 424  * This structure holds the in-stream metadata corresponding to
 425  * the 'comment' header packet.
 426  *
 427  * Meta data is stored as a series of (tag, value) pairs, in
 428  * length-encoded string vectors. The first occurence of the
 429  * '=' character delimits the tag and value. A particular tag
 430  * may occur more than once. The character set encoding for
 431  * the strings is always UTF-8, but the tag names are limited
 432  * to case-insensitive ASCII. See the spec for details.
 433  *
 434  * In filling in this structure, qtheora_decode_header() will
 435  * null-terminate the user_comment strings for safety. However,
 436  * the bitstream format itself treats them as 8-bit clean,
 437  * and so the length array should be treated as authoritative
 438  * for their length.
 439  */
 440 typedef struct theora_comment{
 441   char **user_comments;         /**< An array of comment string vectors */
 442   int   *comment_lengths;       /**< An array of corresponding string vector lengths in bytes */
 443   int    comments;              /**< The total number of comment string vectors */
 444   char  *vendor;                /**< The vendor string identifying the encoder, null terminated */
 445
 446 } theora_comment;
 447 static int (*qtheora_encode_init) (theora_state *th, theora_info *ti);
 448 static int (*qtheora_encode_YUVin) (theora_state *t, yuv_buffer *yuv);
 449 static int (*qtheora_encode_packetout) ( theora_state *t, int last_p,
 450                                     ogg_packet *op);
 451 static int (*qtheora_encode_header) (theora_state *t, ogg_packet *op);
 452 static int (*qtheora_encode_comment) (theora_comment *tc, ogg_packet *op);
 453 static int (*qtheora_encode_tables) (theora_state *t, ogg_packet *op);
 454 static void (*qtheora_info_init) (theora_info *c);
 455 static void (*qtheora_info_clear) (theora_info *c);
 456 static void (*qtheora_clear) (theora_state *t);
 457 static void (*qtheora_comment_init) (theora_comment *tc);
 458 static void  (*qtheora_comment_clear) (theora_comment *tc);
 459 static double (*qtheora_granule_time) (theora_state *th,ogg_int64_t granulepos);
 460 // end of theora.h stuff
 461
 462 static dllfunction_t oggfuncs[] =
 463 {
 464         {"ogg_stream_packetin", (void **) &qogg_stream_packetin},
 465         {"ogg_stream_pageout", (void **) &qogg_stream_pageout},
 466         {"ogg_stream_flush", (void **) &qogg_stream_flush},
 467         {"ogg_stream_init", (void **) &qogg_stream_init},
 468         {"ogg_stream_clear", (void **) &qogg_stream_clear},
 469         {"ogg_page_granulepos", (void **) &qogg_page_granulepos},
 470         {NULL, NULL}
 471 };
 472
 473 static dllfunction_t vorbisencfuncs[] =
 474 {
 475         {"vorbis_encode_init_vbr", (void **) &qvorbis_encode_init_vbr},
 476         {NULL, NULL}
 477 };
 478
 479 static dllfunction_t vorbisfuncs[] =
 480 {
 481         {"vorbis_info_init", (void **) &qvorbis_info_init},
 482         {"vorbis_info_clear", (void **) &qvorbis_info_clear},
 483         {"vorbis_comment_init", (void **) &qvorbis_comment_init},
 484         {"vorbis_comment_clear", (void **) &qvorbis_comment_clear},
 485         {"vorbis_block_init", (void **) &qvorbis_block_init},
 486         {"vorbis_block_clear", (void **) &qvorbis_block_clear},
 487         {"vorbis_dsp_clear", (void **) &qvorbis_dsp_clear},
 488         {"vorbis_analysis_init", (void **) &qvorbis_analysis_init},
 489         {"vorbis_commentheader_out", (void **) &qvorbis_commentheader_out},
 490         {"vorbis_analysis_headerout", (void **) &qvorbis_analysis_headerout},
 491         {"vorbis_analysis_buffer", (void **) &qvorbis_analysis_buffer},
 492         {"vorbis_analysis_wrote", (void **) &qvorbis_analysis_wrote},
 493         {"vorbis_analysis_blockout", (void **) &qvorbis_analysis_blockout},
 494         {"vorbis_analysis", (void **) &qvorbis_analysis},
 495         {"vorbis_bitrate_addblock", (void **) &qvorbis_bitrate_addblock},
 496         {"vorbis_bitrate_flushpacket", (void **) &qvorbis_bitrate_flushpacket},
 497         {"vorbis_granule_time", (void **) &qvorbis_granule_time},
 498         {NULL, NULL}
 499 };
 500
 501 static dllfunction_t theorafuncs[] =
 502 {
 503         {"theora_info_init", (void **) &qtheora_info_init},
 504         {"theora_info_clear", (void **) &qtheora_info_clear},
 505         {"theora_comment_init", (void **) &qtheora_comment_init},
 506         {"theora_comment_clear", (void **) &qtheora_comment_clear},
 507         {"theora_encode_init", (void **) &qtheora_encode_init},
 508         {"theora_encode_YUVin", (void **) &qtheora_encode_YUVin},
 509         {"theora_encode_packetout", (void **) &qtheora_encode_packetout},
 510         {"theora_encode_header", (void **) &qtheora_encode_header},
 511         {"theora_encode_comment", (void **) &qtheora_encode_comment},
 512         {"theora_encode_tables", (void **) &qtheora_encode_tables},
 513         {"theora_clear", (void **) &qtheora_clear},
 514         {"theora_granule_time", (void **) &qtheora_granule_time},
 515         {NULL, NULL}
 516 };
 517
 518 static dllhandle_t og_dll = NULL, vo_dll = NULL, ve_dll = NULL, th_dll = NULL;
 519
 520 qboolean SCR_CaptureVideo_Ogg_OpenLibrary()
 521 {
 522         const char* dllnames_og [] =
 523         {
 524 #if defined(WIN64)
 525                 "libogg64.dll",
 526 #elif defined(WIN32)
 527                 "libogg.dll",
 528                 "ogg.dll",
 529 #elif defined(MACOSX)
 530                 "libogg.dylib",
 531 #else
 532                 "libogg.so.0",
 533                 "libogg.so",
 534 #endif
 535                 NULL
 536         };
 537         const char* dllnames_vo [] =
 538         {
 539 #if defined(WIN64)
 540                 "libvorbis64.dll",
 541 #elif defined(WIN32)
 542                 "libvorbis.dll",
 543                 "vorbis.dll",
 544 #elif defined(MACOSX)
 545                 "libvorbis.dylib",
 546 #else
 547                 "libvorbis.so.0",
 548                 "libvorbis.so",
 549 #endif
 550                 NULL
 551         };
 552         const char* dllnames_ve [] =
 553         {
 554 #if defined(WIN64)
 555                 "libvorbisenc64.dll",
 556 #elif defined(WIN32)
 557                 "libvorbisenc.dll",
 558                 "vorbisenc.dll",
 559 #elif defined(MACOSX)
 560                 "libvorbisenc.dylib",
 561 #else
 562                 "libvorbisenc.so.2",
 563                 "libvorbisenc.so",
 564 #endif
 565                 NULL
 566         };
 567         const char* dllnames_th [] =
 568         {
 569 #if defined(WIN64)
 570                 "libtheora64.dll",
 571 #elif defined(WIN32)
 572                 "libtheora.dll",
 573                 "theora.dll",
 574 #elif defined(MACOSX)
 575                 "libtheora.dylib",
 576 #else
 577                 "libtheora.so.0",
 578                 "libtheora.so",
 579 #endif
 580                 NULL
 581         };
 582
 583         return
 584                 Sys_LoadLibrary (dllnames_og, &og_dll, oggfuncs)
 585                 &&
 586                 Sys_LoadLibrary (dllnames_th, &th_dll, theorafuncs)
 587                 &&
 588                 Sys_LoadLibrary (dllnames_vo, &vo_dll, vorbisfuncs)
 589                 &&
 590                 Sys_LoadLibrary (dllnames_ve, &ve_dll, vorbisencfuncs);
 591 }
 592
 593 void SCR_CaptureVideo_Ogg_Init()
 594 {
 595         SCR_CaptureVideo_Ogg_OpenLibrary();
 596
 597         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_quality);
 598         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_bitrate);
 599         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_keyframe_bitrate_multiplier);
 600         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_keyframe_maxinterval);
 601         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_keyframe_mininterval);
 602         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_keyframe_auto_threshold);
 603         Cvar_RegisterVariable(&cl_capturevideo_ogg_theora_noise_sensitivity);
 604         Cvar_RegisterVariable(&cl_capturevideo_ogg_vorbis_quality);
 605 }
 606
 607 qboolean SCR_CaptureVideo_Ogg_Available()
 608 {
 609         return og_dll && th_dll && vo_dll && ve_dll;
 610 }
 611
 612 void SCR_CaptureVideo_Ogg_CloseDLL()
 613 {
 614         Sys_UnloadLibrary (&ve_dll);
 615         Sys_UnloadLibrary (&vo_dll);
 616         Sys_UnloadLibrary (&th_dll);
 617         Sys_UnloadLibrary (&og_dll);
 618 }
 619
 620 // this struct should not be needed
 621 // however, libogg appears to pull the ogg_page's data element away from our
 622 // feet before we get to write the data due to interleaving
 623 // so this struct is used to keep the page data around until it actually gets
 624 // written
 625 typedef struct allocatedoggpage_s
 626 {
 627         size_t len;
 628         double time;
 629         unsigned char data[65307];
 630         // this number is from RFC 3533. In case libogg writes more, we'll have to increase this
 631         // but we'll get a Host_Error in this case so we can track it down
 632 }
 633 allocatedoggpage_t;
 634
 635 typedef struct capturevideostate_ogg_formatspecific_s
 636 {
 637         ogg_stream_state to, vo;
 638         int serial1, serial2;
 639         theora_state ts;
 640         vorbis_dsp_state vd;
 641         vorbis_block vb;
 642         vorbis_info vi;
 643         yuv_buffer yuv[2];
 644         int yuvi;
 645         int lastnum;
 646         int channels;
 647
 648         allocatedoggpage_t videopage, audiopage;
 649 }
 650 capturevideostate_ogg_formatspecific_t;
 651 #define LOAD_FORMATSPECIFIC_OGG() capturevideostate_ogg_formatspecific_t *format = (capturevideostate_ogg_formatspecific_t *) cls.capturevideo.formatspecific
 652
 653 static void SCR_CaptureVideo_Ogg_Interleave()
 654 {
 655         LOAD_FORMATSPECIFIC_OGG();
 656         ogg_page pg;
 657
 658         if(!cls.capturevideo.soundrate)
 659         {
 660                 while(qogg_stream_pageout(&format->to, &pg) > 0)
 661                 {
 662                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
 663                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
 664                 }
 665                 return;
 666         }
 667
 668         for(;;)
 669         {
 670                 // first: make sure we have a page of both types
 671                 if(!format->videopage.len)
 672                         if(qogg_stream_pageout(&format->to, &pg) > 0)
 673                         {
 674                                 format->videopage.len = pg.header_len + pg.body_len;
 675                                 format->videopage.time = qtheora_granule_time(&format->ts, qogg_page_granulepos(&pg));
 676                                 if(format->videopage.len > sizeof(format->videopage.data))
 677                                         Host_Error("video page too long");
 678                                 memcpy(format->videopage.data, pg.header, pg.header_len);
 679                                 memcpy(format->videopage.data + pg.header_len, pg.body, pg.body_len);
 680                         }
 681                 if(!format->audiopage.len)
 682                         if(qogg_stream_pageout(&format->vo, &pg) > 0)
 683                         {
 684                                 format->audiopage.len = pg.header_len + pg.body_len;
 685                                 format->audiopage.time = qvorbis_granule_time(&format->vd, qogg_page_granulepos(&pg));
 686                                 if(format->audiopage.len > sizeof(format->audiopage.data))
 687                                         Host_Error("audio page too long");
 688                                 memcpy(format->audiopage.data, pg.header, pg.header_len);
 689                                 memcpy(format->audiopage.data + pg.header_len, pg.body, pg.body_len);
 690                         }
 691
 692                 if(format->videopage.len && format->audiopage.len)
 693                 {
 694                         // output the page that ends first
 695                         if(format->videopage.time < format->audiopage.time)
 696                         {
 697                                 FS_Write(cls.capturevideo.videofile, format->videopage.data, format->videopage.len);
 698                                 format->videopage.len = 0;
 699                         }
 700                         else
 701                         {
 702                                 FS_Write(cls.capturevideo.videofile, format->audiopage.data, format->audiopage.len);
 703                                 format->audiopage.len = 0;
 704                         }
 705                 }
 706                 else
 707                         break;
 708         }
 709 }
 710
 711 static void SCR_CaptureVideo_Ogg_FlushInterleaving()
 712 {
 713         LOAD_FORMATSPECIFIC_OGG();
 714
 715         if(cls.capturevideo.soundrate)
 716         if(format->audiopage.len)
 717         {
 718                 FS_Write(cls.capturevideo.videofile, format->audiopage.data, format->audiopage.len);
 719                 format->audiopage.len = 0;
 720         }
 721
 722         if(format->videopage.len)
 723         {
 724                 FS_Write(cls.capturevideo.videofile, format->videopage.data, format->videopage.len);
 725                 format->videopage.len = 0;
 726         }
 727 }
 728
 729 static void SCR_CaptureVideo_Ogg_EndVideo()
 730 {
 731         LOAD_FORMATSPECIFIC_OGG();
 732         ogg_page pg;
 733         ogg_packet pt;
 734
 735         if(format->yuvi >= 0)
 736         {
 737                 // send the previous (and last) frame
 738                 while(format->lastnum-- > 0)
 739                 {
 740                         qtheora_encode_YUVin(&format->ts, &format->yuv[format->yuvi]);
 741
 742                         while(qtheora_encode_packetout(&format->ts, !format->lastnum, &pt))
 743                                 qogg_stream_packetin(&format->to, &pt);
 744
 745                         SCR_CaptureVideo_Ogg_Interleave();
 746                 }
 747         }
 748
 749         if(cls.capturevideo.soundrate)
 750         {
 751                 qvorbis_analysis_wrote(&format->vd, 0);
 752                 while(qvorbis_analysis_blockout(&format->vd, &format->vb) == 1)
 753                 {
 754                         qvorbis_analysis(&format->vb, NULL);
 755                         qvorbis_bitrate_addblock(&format->vb);
 756                         while(qvorbis_bitrate_flushpacket(&format->vd, &pt))
 757                                 qogg_stream_packetin(&format->vo, &pt);
 758                         SCR_CaptureVideo_Ogg_Interleave();
 759                 }
 760         }
 761
 762         SCR_CaptureVideo_Ogg_FlushInterleaving();
 763
 764         while(qogg_stream_pageout(&format->to, &pg) > 0)
 765         {
 766                 FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
 767                 FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
 768         }
 769
 770         if(cls.capturevideo.soundrate)
 771         {
 772                 while(qogg_stream_pageout(&format->vo, &pg) > 0)
 773                 {
 774                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
 775                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
 776                 }
 777         }
 778
 779         while (1) {
 780                 int result = qogg_stream_flush (&format->to, &pg);
 781                 if (result < 0)
 782                         fprintf (stderr, "Internal Ogg library error.\n"); // TODO Host_Error
 783                 if (result <= 0)
 784                         break;
 785                 FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
 786                 FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
 787         }
 788
 789         if(cls.capturevideo.soundrate)
 790         {
 791                 while (1) {
 792                         int result = qogg_stream_flush (&format->vo, &pg);
 793                         if (result < 0)
 794                                 fprintf (stderr, "Internal Ogg library error.\n"); // TODO Host_Error
 795                         if (result <= 0)
 796                                 break;
 797                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
 798                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
 799                 }
 800
 801                 qogg_stream_clear(&format->vo);
 802                 qvorbis_block_clear(&format->vb);
 803                 qvorbis_dsp_clear(&format->vd);
 804         }
 805
 806         qogg_stream_clear(&format->to);
 807         qtheora_clear(&format->ts);
 808         qvorbis_info_clear(&format->vi);
 809
 810         Mem_Free(format->yuv[0].y);
 811         Mem_Free(format->yuv[0].u);
 812         Mem_Free(format->yuv[0].v);
 813         Mem_Free(format->yuv[1].y);
 814         Mem_Free(format->yuv[1].u);
 815         Mem_Free(format->yuv[1].v);
 816         Mem_Free(format);
 817
 818         FS_Close(cls.capturevideo.videofile);
 819         cls.capturevideo.videofile = NULL;
 820 }
 821
 822 static void SCR_CaptureVideo_Ogg_ConvertFrame_BGRA_to_YUV()
 823 {
 824         LOAD_FORMATSPECIFIC_OGG();
 825         yuv_buffer *yuv;
 826         int x, y;
 827         int blockr, blockg, blockb;
 828         unsigned char *b = cls.capturevideo.outbuffer;
 829         int w = cls.capturevideo.width;
 830         int h = cls.capturevideo.height;
 831         int inpitch = w*4;
 832
 833         yuv = &format->yuv[format->yuvi];
 834
 835         for(y = 0; y < h; ++y)
 836         {
 837                 for(b = cls.capturevideo.outbuffer + (h-1-y)*w*4, x = 0; x < w; ++x)
 838                 {
 839                         blockr = b[2];
 840                         blockg = b[1];
 841                         blockb = b[0];
 842                         yuv->y[x + yuv->y_stride * y] =
 843                                 cls.capturevideo.yuvnormalizetable[0][cls.capturevideo.rgbtoyuvscaletable[0][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[0][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[0][2][blockb]];
 844                         b += 4;
 845                 }
 846
 847                 if((y & 1) == 0)
 848                 {
 849                         for(b = cls.capturevideo.outbuffer + (h-2-y)*w*4, x = 0; x < w/2; ++x)
 850                         {
 851                                 blockr = (b[2] + b[6] + b[inpitch+2] + b[inpitch+6]) >> 2;
 852                                 blockg = (b[1] + b[5] + b[inpitch+1] + b[inpitch+5]) >> 2;
 853                                 blockb = (b[0] + b[4] + b[inpitch+0] + b[inpitch+4]) >> 2;
 854                                 yuv->u[x + yuv->uv_stride * (y/2)] =
 855                                         cls.capturevideo.yuvnormalizetable[1][cls.capturevideo.rgbtoyuvscaletable[1][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[1][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[1][2][blockb] + 128];
 856                                 yuv->v[x + yuv->uv_stride * (y/2)] =
 857                                         cls.capturevideo.yuvnormalizetable[2][cls.capturevideo.rgbtoyuvscaletable[2][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[2][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[2][2][blockb] + 128];
 858                                 b += 8;
 859                         }
 860                 }
 861         }
 862 }
 863
 864 static void SCR_CaptureVideo_Ogg_VideoFrames(int num)
 865 {
 866         LOAD_FORMATSPECIFIC_OGG();
 867         ogg_packet pt;
 868
 869         // data is in cls.capturevideo.outbuffer as BGRA and has size width*height
 870
 871         if(format->yuvi >= 0)
 872         {
 873                 // send the previous frame
 874                 while(format->lastnum-- > 0)
 875                 {
 876                         qtheora_encode_YUVin(&format->ts, &format->yuv[format->yuvi]);
 877
 878                         while(qtheora_encode_packetout(&format->ts, false, &pt))
 879                                 qogg_stream_packetin(&format->to, &pt);
 880
 881                         SCR_CaptureVideo_Ogg_Interleave();
 882                 }
 883         }
 884
 885         format->yuvi = (format->yuvi + 1) % 2;
 886         SCR_CaptureVideo_Ogg_ConvertFrame_BGRA_to_YUV();
 887         format->lastnum = num;
 888
 889         // TODO maybe send num-1 frames from here already
 890 }
 891
 892 static void SCR_CaptureVideo_Ogg_SoundFrame(const portable_sampleframe_t *paintbuffer, size_t length)
 893 {
 894         LOAD_FORMATSPECIFIC_OGG();
 895         float **vorbis_buffer;
 896         size_t i;
 897         int j;
 898         ogg_packet pt;
 899
 900         vorbis_buffer = qvorbis_analysis_buffer(&format->vd, length);
 901         for(i = 0; i < length; ++i)
 902         {
 903                 for(j = 0; j < cls.capturevideo.soundchannels; ++j)
 904                         vorbis_buffer[j][i] = paintbuffer[i].sample[j] / 32768.0f;
 905         }
 906         qvorbis_analysis_wrote(&format->vd, length);
 907
 908         while(qvorbis_analysis_blockout(&format->vd, &format->vb) == 1)
 909         {
 910                 qvorbis_analysis(&format->vb, NULL);
 911                 qvorbis_bitrate_addblock(&format->vb);
 912
 913                 while(qvorbis_bitrate_flushpacket(&format->vd, &pt))
 914                         qogg_stream_packetin(&format->vo, &pt);
 915         }
 916
 917         SCR_CaptureVideo_Ogg_Interleave();
 918 }
 919
 920 void SCR_CaptureVideo_Ogg_BeginVideo()
 921 {
 922         cls.capturevideo.format = CAPTUREVIDEOFORMAT_OGG_VORBIS_THEORA;
 923         cls.capturevideo.formatextension = "ogv";
 924         cls.capturevideo.videofile = FS_OpenRealFile(va("%s.%s", cls.capturevideo.basename, cls.capturevideo.formatextension), "wb", false);
 925         cls.capturevideo.endvideo = SCR_CaptureVideo_Ogg_EndVideo;
 926         cls.capturevideo.videoframes = SCR_CaptureVideo_Ogg_VideoFrames;
 927         cls.capturevideo.soundframe = SCR_CaptureVideo_Ogg_SoundFrame;
 928         cls.capturevideo.formatspecific = Mem_Alloc(tempmempool, sizeof(capturevideostate_ogg_formatspecific_t));
 929         {
 930                 LOAD_FORMATSPECIFIC_OGG();
 931                 int num, denom, i;
 932                 ogg_page pg;
 933                 ogg_packet pt, pt2, pt3;
 934                 theora_comment tc;
 935                 vorbis_comment vc;
 936                 theora_info ti;
 937
 938                 format->serial1 = rand();
 939                 qogg_stream_init(&format->to, format->serial1);
 940
 941                 if(cls.capturevideo.soundrate)
 942                 {
 943                         do
 944                         {
 945                                 format->serial2 = rand();
 946                         }
 947                         while(format->serial1 == format->serial2);
 948                         qogg_stream_init(&format->vo, format->serial2);
 949                 }
 950
 951                 format->videopage.len = format->audiopage.len = 0;
 952
 953                 qtheora_info_init(&ti);
 954                 ti.frame_width = cls.capturevideo.width;
 955                 ti.frame_height = cls.capturevideo.height;
 956                 ti.width = (ti.frame_width + 15) & ~15;
 957                 ti.height = (ti.frame_height + 15) & ~15;
 958                 //ti.offset_x = ((ti.width - ti.frame_width) / 2) & ~1;
 959                 //ti.offset_y = ((ti.height - ti.frame_height) / 2) & ~1;
 960
 961                 for(i = 0; i < 2; ++i)
 962                 {
 963                         format->yuv[i].y_width = ti.width;
 964                         format->yuv[i].y_height = ti.height;
 965                         format->yuv[i].y_stride = ti.width;
 966                         format->yuv[i].uv_width = ti.width / 2;
 967                         format->yuv[i].uv_height = ti.height / 2;
 968                         format->yuv[i].uv_stride = ti.width / 2;
 969                         format->yuv[i].y = Mem_Alloc(tempmempool, format->yuv[i].y_stride * format->yuv[i].y_height);
 970                         format->yuv[i].u = Mem_Alloc(tempmempool, format->yuv[i].uv_stride * format->yuv[i].uv_height);
 971                         format->yuv[i].v = Mem_Alloc(tempmempool, format->yuv[i].uv_stride * format->yuv[i].uv_height);
 972                 }
 973                 format->yuvi = -1; // -1: no frame valid yet, write into 0
 974
 975                 FindFraction(cls.capturevideo.framerate, &num, &denom, 1001);
 976                 ti.fps_numerator = num;
 977                 ti.fps_denominator = denom;
 978
 979                 FindFraction(1 / vid_pixelheight.value, &num, &denom, 1000);
 980                 ti.aspect_numerator = num;
 981                 ti.aspect_denominator = denom;
 982
 983                 ti.colorspace = OC_CS_UNSPECIFIED;
 984                 ti.pixelformat = OC_PF_420;
 985
 986                 ti.quick_p = true; // http://mlblog.osdir.com/multimedia.ogg.theora.general/2004-07/index.shtml
 987                 ti.dropframes_p = false;
 988
 989                 ti.target_bitrate = cl_capturevideo_ogg_theora_bitrate.integer * 1000;
 990                 ti.quality = cl_capturevideo_ogg_theora_quality.integer;
 991
 992                 if(ti.target_bitrate <= 0)
 993                 {
 994                         if(ti.quality < 0)
 995                         {
 996                                 ti.target_bitrate = -1;
 997                                 ti.keyframe_data_target_bitrate = -1;
 998                                 ti.quality = 63;
 999                         }
1000                         else
1001                         {
1002                                 ti.target_bitrate = -1;
1003                                 ti.keyframe_data_target_bitrate = -1;
1004                                 ti.quality = bound(0, ti.quality, 63);
1005                         }
1006                 }
1007                 else
1008                 {
1009                         if(ti.quality < 0)
1010                         {
1011                                 ti.target_bitrate = bound(45000, ti.target_bitrate, 2000000);
1012                                 ti.keyframe_data_target_bitrate = ti.target_bitrate * max(1, cl_capturevideo_ogg_theora_keyframe_bitrate_multiplier.value);
1013                                 ti.quality = -1;
1014                         }
1015                         else
1016                         {
1017                                 ti.target_bitrate = bound(45000, ti.target_bitrate, 2000000);
1018                                 ti.keyframe_data_target_bitrate = ti.target_bitrate * max(1, cl_capturevideo_ogg_theora_keyframe_bitrate_multiplier.value);
1019                                 ti.quality = -1;
1020                         }
1021                 }
1022
1023                 // this -1 magic is because ti.keyframe_frequency and ti.keyframe_mindistance use different metrics
1024                 ti.keyframe_frequency = bound(1, cl_capturevideo_ogg_theora_keyframe_maxinterval.integer, 1000);
1025                 ti.keyframe_mindistance = bound(1, cl_capturevideo_ogg_theora_keyframe_mininterval.integer, (int) ti.keyframe_frequency) - 1;
1026                 ti.noise_sensitivity = bound(0, cl_capturevideo_ogg_theora_noise_sensitivity.integer, 6);
1027                 ti.sharpness = bound(0, cl_capturevideo_ogg_theora_sharpness.integer, 2);
1028                 ti.keyframe_auto_threshold = bound(0, cl_capturevideo_ogg_theora_keyframe_auto_threshold.integer, 100);
1029
1030                 ti.keyframe_frequency_force = ti.keyframe_frequency;
1031                 ti.keyframe_auto_p = (ti.keyframe_frequency != ti.keyframe_mindistance + 1);
1032
1033                 qtheora_encode_init(&format->ts, &ti);
1034                 qtheora_info_clear(&ti);
1035
1036                 // vorbis?
1037                 if(cls.capturevideo.soundrate)
1038                 {
1039                         qvorbis_info_init(&format->vi);
1040                         qvorbis_encode_init_vbr(&format->vi, cls.capturevideo.soundchannels, cls.capturevideo.soundrate, bound(-1, cl_capturevideo_ogg_vorbis_quality.value, 10) * 0.099);
1041                         qvorbis_comment_init(&vc);
1042                         qvorbis_analysis_init(&format->vd, &format->vi);
1043                         qvorbis_block_init(&format->vd, &format->vb);
1044                 }
1045
1046                 qtheora_comment_init(&tc);
1047
1048                 /* create the remaining theora headers */
1049                 qtheora_encode_header(&format->ts, &pt);
1050                 qogg_stream_packetin(&format->to, &pt);
1051                 if (qogg_stream_pageout (&format->to, &pg) != 1)
1052                         fprintf (stderr, "Internal Ogg library error.\n");
1053                 FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
1054                 FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
1055
1056                 qtheora_encode_comment(&tc, &pt);
1057                 qogg_stream_packetin(&format->to, &pt);
1058                 qtheora_encode_tables(&format->ts, &pt);
1059                 qogg_stream_packetin (&format->to, &pt);
1060
1061                 qtheora_comment_clear(&tc);
1062
1063                 if(cls.capturevideo.soundrate)
1064                 {
1065                         qvorbis_analysis_headerout(&format->vd, &vc, &pt, &pt2, &pt3);
1066                         qogg_stream_packetin(&format->vo, &pt);
1067                         if (qogg_stream_pageout (&format->vo, &pg) != 1)
1068                                 fprintf (stderr, "Internal Ogg library error.\n");
1069                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
1070                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
1071
1072                         qogg_stream_packetin(&format->vo, &pt2);
1073                         qogg_stream_packetin(&format->vo, &pt3);
1074
1075                         qvorbis_comment_clear(&vc);
1076                 }
1077
1078                 for(;;)
1079                 {
1080                         int result = qogg_stream_flush (&format->to, &pg);
1081                         if (result < 0)
1082                                 fprintf (stderr, "Internal Ogg library error.\n"); // TODO Host_Error
1083                         if (result <= 0)
1084                                 break;
1085                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
1086                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
1087                 }
1088
1089                 if(cls.capturevideo.soundrate)
1090                 for(;;)
1091                 {
1092                         int result = qogg_stream_flush (&format->vo, &pg);
1093                         if (result < 0)
1094                                 fprintf (stderr, "Internal Ogg library error.\n"); // TODO Host_Error
1095                         if (result <= 0)
1096                                 break;
1097                         FS_Write(cls.capturevideo.videofile, pg.header, pg.header_len);
1098                         FS_Write(cls.capturevideo.videofile, pg.body, pg.body_len);
1099                 }
1100         }
1101 }