libhb/muxmkv.c

   1 /* $Id:  $
   2
   3    This file is part of the HandBrake source code.
   4    Homepage: <http://handbrake.m0k.org/>.
   5    It may be used under the terms of the GNU General Public License. */
   6
   7 /* libmkv header */
   8 #include "libmkv.h"
   9
  10 #include <ogg/ogg.h>
  11
  12 #include "hb.h"
  13
  14 /* Scale factor to apply to timecodes to convert from HandBrake's
  15  * 1/90000s to nanoseconds as expected by libmkv */
  16 #define TIMECODE_SCALE 1000000000 / 90000
  17
  18 struct hb_mux_object_s
  19 {
  20     HB_MUX_COMMON;
  21
  22     hb_job_t * job;
  23
  24     mk_Writer * file;
  25 };
  26
  27 struct hb_mux_data_s
  28 {
  29     mk_Track  * track;
  30     uint64_t  prev_chapter_tc;
  31     uint16_t  current_chapter;
  32 };
  33
  34 /**********************************************************************
  35  * MKVInit
  36  **********************************************************************
  37  * Allocates hb_mux_data_t structures, create file and write headers
  38  *********************************************************************/
  39 static int MKVInit( hb_mux_object_t * m )
  40 {
  41     hb_job_t   * job   = m->job;
  42     hb_title_t * title = job->title;
  43     hb_audio_t    * audio;
  44     hb_mux_data_t * mux_data;
  45
  46     uint8_t         *avcC = NULL;
  47     uint8_t         default_track_flag = 1;
  48     int             avcC_len, i;
  49     ogg_packet      *ogg_headers[3];
  50     mk_TrackConfig *track;
  51
  52     track = calloc(1, sizeof(mk_TrackConfig));
  53
  54     m->file = mk_createWriter(job->file, 1000000, 1);
  55
  56     /* Video track */
  57     mux_data      = calloc(1, sizeof( hb_mux_data_t ) );
  58     job->mux_data = mux_data;
  59
  60     track->trackType = MK_TRACK_VIDEO;
  61     track->flagDefault = 1;
  62     switch (job->vcodec)
  63     {
  64         case HB_VCODEC_X264:
  65             track->codecID = MK_VCODEC_MP4AVC;
  66             /* Taken from x264 muxers.c */
  67             avcC_len = 5 + 1 + 2 + job->config.h264.sps_length + 1 + 2 + job->config.h264.pps_length;
  68             avcC = malloc(avcC_len);
  69             if (avcC == NULL)
  70                 return -1;
  71
  72             avcC[0] = 1;
  73             avcC[1] = job->config.h264.sps[1];      /* AVCProfileIndication */
  74             avcC[2] = job->config.h264.sps[2];      /* profile_compat */
  75             avcC[3] = job->config.h264.sps[3];      /* AVCLevelIndication */
  76             avcC[4] = 0xff; // nalu size length is four bytes
  77             avcC[5] = 0xe1; // one sps
  78
  79             avcC[6] = job->config.h264.sps_length >> 8;
  80             avcC[7] = job->config.h264.sps_length;
  81
  82             memcpy(avcC+8, job->config.h264.sps, job->config.h264.sps_length);
  83
  84             avcC[8+job->config.h264.sps_length] = 1; // one pps
  85             avcC[9+job->config.h264.sps_length] = job->config.h264.pps_length >> 8;
  86             avcC[10+job->config.h264.sps_length] = job->config.h264.pps_length;
  87
  88             memcpy( avcC+11+job->config.h264.sps_length, job->config.h264.pps, job->config.h264.pps_length );
  89             track->codecPrivate = avcC;
  90             track->codecPrivateSize = avcC_len;
  91             if (job->areBframes)
  92                 track->minCache = 1;
  93             break;
  94         case HB_VCODEC_XVID:
  95         case HB_VCODEC_FFMPEG:
  96             track->codecID = MK_VCODEC_MP4ASP;
  97             track->codecPrivate = job->config.mpeg4.bytes;
  98             track->codecPrivateSize = job->config.mpeg4.length;
  99             break;
 100         default:
 101             *job->die = 1;
 102             hb_log("muxmkv: Unknown video codec: %x", job->vcodec);
 103             return 0;
 104     }
 105
 106     track->video.pixelWidth = job->width;
 107     track->video.pixelHeight = job->height;
 108     track->video.displayHeight = job->height;
 109     if(job->pixel_ratio)
 110     {
 111         track->video.displayWidth = job->width * ((double)job->pixel_aspect_width / (double)job->pixel_aspect_height);
 112     }
 113     else
 114     {
 115         track->video.displayWidth = job->width;
 116     }
 117
 118
 119     track->defaultDuration = (int64_t)(((float)job->vrate_base / (float)job->vrate) * 1000000000);
 120
 121     mux_data->track = mk_createTrack(m->file, track);
 122
 123     memset(track, 0, sizeof(mk_TrackConfig));
 124
 125     /* add the audio tracks */
 126     for( i = 0; i < hb_list_count( title->list_audio ); i++ )
 127     {
 128         audio = hb_list_item( title->list_audio, i );
 129         mux_data = malloc( sizeof( hb_mux_data_t ) );
 130         audio->mux_data = mux_data;
 131
 132         switch (job->acodec)
 133         {
 134             case HB_ACODEC_AC3:
 135                 track->codecPrivate = NULL;
 136                 track->codecPrivateSize = 0;
 137                 track->codecID = MK_ACODEC_AC3;
 138                 break;
 139             case HB_ACODEC_LAME:
 140                 track->codecPrivate = NULL;
 141                 track->codecPrivateSize = 0;
 142                 track->codecID = MK_ACODEC_MP3;
 143                 break;
 144             case HB_ACODEC_VORBIS:
 145                 {
 146                     int i, j;
 147                     int64_t offset = 0;
 148                     int64_t cp_size = 0;
 149                     char    *cp;
 150                     track->codecID = MK_ACODEC_VORBIS;
 151                     cp_size = sizeof( char );
 152                     for (i = 0; i < 3; ++i)
 153                     {
 154                         ogg_headers[i] = (ogg_packet *)audio->config.vorbis.headers[i];
 155                         ogg_headers[i]->packet = (unsigned char *)&audio->config.vorbis.headers[i] + sizeof( ogg_packet );
 156                         cp_size += (sizeof( char ) * ((ogg_headers[i]->bytes / 255) + 1)) + ogg_headers[i]->bytes;
 157                             /* This will be too big, but it doesn't matter, as we only need it to be big enough. */
 158                     }
 159                     cp = track->codecPrivate = calloc(1, cp_size);
 160                     cp[offset++] = 0x02;
 161                     for (i = 0; i < 2; ++i)
 162                     {
 163                         for (j = ogg_headers[i]->bytes; j >= 255; j -= 255)
 164                         {
 165                             cp[offset++] = 255;
 166                         }
 167                         cp[offset++] = j;
 168                     }
 169                     for(i = 0; i < 3; ++i)
 170                     {
 171                         memcpy(cp + offset, ogg_headers[i]->packet, ogg_headers[i]->bytes);
 172                         offset += ogg_headers[i]->bytes;
 173                     }
 174                     track->codecPrivateSize = offset;
 175                 }
 176                 break;
 177             case HB_ACODEC_FAAC:
 178                 track->codecPrivate = audio->config.aac.bytes;
 179                 track->codecPrivateSize = audio->config.aac.length;
 180                 track->codecID = MK_ACODEC_AAC;
 181                 break;
 182             default:
 183                 *job->die = 1;
 184                 hb_log("muxmkv: Unknown audio codec: %x", job->acodec);
 185                 return 0;
 186         }
 187
 188         if (default_track_flag)
 189         {
 190             track->flagDefault = 1;
 191             default_track_flag = 0;
 192         }
 193
 194         track->trackType = MK_TRACK_AUDIO;
 195         track->language = audio->iso639_2;
 196         track->audio.samplingFreq = (float)job->arate;
 197         track->audio.channels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->amixdown);
 198 //        track->defaultDuration = job->arate * 1000;
 199         mux_data->track = mk_createTrack(m->file, track);
 200         if (job->acodec == HB_ACODEC_VORBIS && track->codecPrivate != NULL)
 201           free(track->codecPrivate);
 202     }
 203
 204     mk_writeHeader( m->file, "HandBrake " HB_VERSION);
 205     if (track != NULL)
 206         free(track);
 207     if (avcC != NULL)
 208         free(avcC);
 209
 210     return 0;
 211 }
 212
 213 static int MKVMux( hb_mux_object_t * m, hb_mux_data_t * mux_data,
 214                    hb_buffer_t * buf )
 215 {
 216     hb_job_t * job = m->job;
 217     hb_title_t * title = job->title;
 218     uint64_t   timecode = 0;
 219     hb_chapter_t *chapter_data;
 220     char tmp_buffer[1024];
 221     char *string = tmp_buffer;
 222     if (mux_data == job->mux_data)
 223     {
 224         /* Video */
 225         if ((job->vcodec == HB_VCODEC_X264) && (buf->frametype & HB_FRAME_REF))
 226         {
 227             timecode = (buf->start + (buf->renderOffset - 1000000)) * TIMECODE_SCALE;
 228         }
 229         else
 230         {
 231             timecode = buf->start * TIMECODE_SCALE;
 232         }
 233
 234         if (job->chapter_markers && (buf->new_chap || timecode == 0))
 235         {
 236             /* Make sure we're not writing a chapter that has 0 length */
 237             if (mux_data->prev_chapter_tc != timecode)
 238             {
 239                 chapter_data = hb_list_item( title->list_chapter, mux_data->current_chapter++ );
 240                 tmp_buffer[0] = '\0';
 241
 242                 if( chapter_data != NULL )
 243                 {
 244                     string = chapter_data->title;
 245                 }
 246
 247                 if( strlen(string) == 0 || strlen(string) >= 1024 )
 248                 {
 249                     snprintf( tmp_buffer, 1023, "Chapter %02i", mux_data->current_chapter );
 250                     string = tmp_buffer;
 251                 }
 252                 mk_createChapterSimple(m->file, mux_data->prev_chapter_tc, mux_data->prev_chapter_tc, string);
 253             }
 254             mux_data->prev_chapter_tc = timecode;
 255         }
 256     }
 257     else
 258     {
 259         /* Audio */
 260         timecode = buf->start * TIMECODE_SCALE;
 261         if (job->acodec == HB_ACODEC_VORBIS)
 262         {
 263             /* ughhh, vorbis is a pain :( */
 264             ogg_packet  *op;
 265
 266             op = (ogg_packet *)buf->data;
 267             op->packet = buf->data + sizeof( ogg_packet );
 268             mk_startFrame(m->file, mux_data->track);
 269             mk_addFrameData(m->file, mux_data->track, op->packet, op->bytes);
 270             mk_setFrameFlags(m->file, mux_data->track, timecode, 1);
 271             return 0;
 272         }
 273     }
 274
 275     mk_startFrame(m->file, mux_data->track);
 276     mk_addFrameData(m->file, mux_data->track, buf->data, buf->size);
 277     mk_setFrameFlags(m->file, mux_data->track, timecode,
 278         ((job->vcodec == HB_VCODEC_X264 && mux_data == job->mux_data) ? (buf->frametype == HB_FRAME_IDR) : ((buf->frametype & HB_FRAME_KEY) != 0)) );
 279     return 0;
 280 }
 281
 282 static int MKVEnd( hb_mux_object_t * m )
 283 {
 284     hb_job_t  *job = m->job;
 285     hb_mux_data_t *mux_data = job->mux_data;
 286     hb_title_t  *title = job->title;
 287     hb_chapter_t *chapter_data = hb_list_item( title->list_chapter, mux_data->current_chapter++ );
 288     char tmp_buffer[1024];
 289     char *string = tmp_buffer;
 290
 291     if(job->chapter_markers)
 292     {
 293         tmp_buffer[0] = '\0';
 294
 295         if( chapter_data != NULL )
 296         {
 297             string = chapter_data->title;
 298         }
 299
 300         if( strlen(string) == 0 || strlen(string) >= 1024 )
 301         {
 302             snprintf( tmp_buffer, 1023, "Chapter %02i", mux_data->current_chapter );
 303             string = tmp_buffer;
 304         }
 305         mk_createChapterSimple(m->file, mux_data->prev_chapter_tc, mux_data->prev_chapter_tc, string);
 306     }
 307
 308     mk_close(m->file);
 309
 310     // TODO: Free what we alloc'd
 311
 312     return 0;
 313 }
 314
 315 hb_mux_object_t * hb_mux_mkv_init( hb_job_t * job )
 316 {
 317     hb_mux_object_t * m = calloc( sizeof( hb_mux_object_t ), 1 );
 318     m->init      = MKVInit;
 319     m->mux       = MKVMux;
 320     m->end       = MKVEnd;
 321     m->job       = job;
 322     return m;
 323 }