modules/codec/daala.c

   1 /*****************************************************************************
   2  * daala.c: daala codec module making use of libdaala.
   3  *****************************************************************************
   4  * Copyright (C) 2014 VLC authors and VideoLAN
   5  *
   6  * Authors: Tristan Matthews <le.businessman@gmail.com>
   7  *   * Based on theora.c by: Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33 #include <vlc_codec.h>
  34 #include "../demux/xiph.h"
  35
  36 #include <daala/codec.h>
  37 #include <daala/daaladec.h>
  38 #ifdef ENABLE_SOUT
  39 #include <daala/daalaenc.h>
  40 #endif
  41
  42 #include <limits.h>
  43
  44 /*****************************************************************************
  45  * decoder_sys_t : daala decoder descriptor
  46  *****************************************************************************/
  47 typedef struct
  48 {
  49     /* Module mode */
  50     bool b_packetizer;
  51
  52     /*
  53      * Input properties
  54      */
  55     bool b_has_headers;
  56
  57     /*
  58      * Daala properties
  59      */
  60     daala_info          di;       /* daala bitstream settings */
  61     daala_comment       dc;       /* daala comment information */
  62     daala_dec_ctx       *dcx;     /* daala decoder context */
  63
  64     /*
  65      * Decoding properties
  66      */
  67     bool b_decoded_first_keyframe;
  68
  69     /*
  70      * Common properties
  71      */
  72     vlc_tick_t i_pts;
  73 } decoder_sys_t;
  74
  75 /*****************************************************************************
  76  * Local prototypes
  77  *****************************************************************************/
  78 static int  OpenDecoder   ( vlc_object_t * );
  79 static int  OpenPacketizer( vlc_object_t * );
  80 static void CloseDecoder  ( vlc_object_t * );
  81
  82 static int DecodeVideo( decoder_t *p_dec, block_t *p_block );
  83 static block_t *Packetize ( decoder_t *, block_t ** );
  84 static int  ProcessHeaders( decoder_t * );
  85 static void *ProcessPacket ( decoder_t *, daala_packet *, block_t * );
  86
  87 static picture_t *DecodePacket( decoder_t *, daala_packet * );
  88
  89 static void ParseDaalaComments( decoder_t * );
  90 static void daala_CopyPicture( picture_t *, daala_image * );
  91
  92 #ifdef ENABLE_SOUT
  93 static int  OpenEncoder( vlc_object_t *p_this );
  94 static void CloseEncoder( vlc_object_t *p_this );
  95 static block_t *Encode( encoder_t *p_enc, picture_t *p_pict );
  96
  97 static const char *const enc_chromafmt_list[] = {
  98     "420", "444"
  99 };
 100 static const char *const enc_chromafmt_list_text[] = {
 101     "4:2:0", "4:4:4"
 102 };
 103 #endif
 104
 105 /*****************************************************************************
 106  * Module descriptor
 107  *****************************************************************************/
 108 #define ENC_QUALITY_TEXT N_("Encoding quality")
 109 #define ENC_QUALITY_LONGTEXT N_( \
 110   "Enforce a quality between 0 (lossless) and 511 (worst)." )
 111 #define ENC_KEYINT_TEXT N_("Keyframe interval")
 112 #define ENC_KEYINT_LONGTEXT N_( \
 113   "Enforce a keyframe interval between 1 and 1000." )
 114
 115 vlc_module_begin ()
 116     set_category( CAT_INPUT )
 117     set_subcategory( SUBCAT_INPUT_VCODEC )
 118     set_shortname( "Daala" )
 119     set_description( N_("Daala video decoder") )
 120     set_capability( "video decoder", 100 )
 121     set_callbacks( OpenDecoder, CloseDecoder )
 122     add_shortcut( "daala" )
 123     add_submodule ()
 124     set_description( N_("Daala video packetizer") )
 125     set_capability( "packetizer", 100 )
 126     set_callbacks( OpenPacketizer, CloseDecoder )
 127     add_shortcut( "daala" )
 128
 129 #ifdef ENABLE_SOUT
 130     add_submodule ()
 131     set_description( N_("Daala video encoder") )
 132     set_capability( "encoder", 150 )
 133     set_callbacks( OpenEncoder, CloseEncoder )
 134     add_shortcut( "daala" )
 135
 136 #   define ENC_CFG_PREFIX "sout-daala-"
 137     add_integer_with_range( ENC_CFG_PREFIX "quality", 10, 0, 511,
 138                  ENC_QUALITY_TEXT, ENC_QUALITY_LONGTEXT, false )
 139     add_integer_with_range( ENC_CFG_PREFIX "keyint", 256, 1, 1000,
 140                  ENC_KEYINT_TEXT, ENC_KEYINT_LONGTEXT, false )
 141
 142 #   define ENC_CHROMAFMT_TEXT N_("Chroma format")
 143 #   define ENC_CHROMAFMT_LONGTEXT N_("Picking chroma format will force a " \
 144                                      "conversion of the video into that format")
 145
 146     add_string( ENC_CFG_PREFIX "chroma-fmt", "420", ENC_CHROMAFMT_TEXT,
 147                 ENC_CHROMAFMT_LONGTEXT, false )
 148     change_string_list( enc_chromafmt_list, enc_chromafmt_list_text )
 149 vlc_module_end ()
 150
 151 static const char *const ppsz_enc_options[] = {
 152     "quality", "keyint", "chroma-fmt", NULL
 153 };
 154 #endif
 155
 156 static int OpenCommon( vlc_object_t *p_this, bool b_packetizer )
 157 {
 158     decoder_t *p_dec = (decoder_t*)p_this;
 159     decoder_sys_t *p_sys;
 160
 161     if( p_dec->fmt_in.i_codec != VLC_CODEC_DAALA )
 162     {
 163         return VLC_EGENERIC;
 164     }
 165
 166     /* Allocate the memory needed to store the decoder's structure */
 167     p_sys = malloc(sizeof(*p_sys));
 168     if( p_sys == NULL )
 169         return VLC_ENOMEM;
 170
 171     p_dec->p_sys = p_sys;
 172     p_dec->p_sys->b_packetizer = b_packetizer;
 173     p_sys->b_has_headers = false;
 174     p_sys->i_pts = VLC_TICK_INVALID;
 175     p_sys->b_decoded_first_keyframe = false;
 176     p_sys->dcx = NULL;
 177
 178     if( b_packetizer )
 179     {
 180         p_dec->fmt_out.i_codec = VLC_CODEC_DAALA;
 181         p_dec->pf_packetize = Packetize;
 182     }
 183     else
 184     {
 185         p_dec->fmt_out.i_codec = VLC_CODEC_I420;
 186         p_dec->pf_decode = DecodeVideo;
 187     }
 188
 189     /* Init supporting Daala structures needed in header parsing */
 190     daala_comment_init( &p_sys->dc );
 191     daala_info_init( &p_sys->di );
 192
 193     return VLC_SUCCESS;
 194 }
 195
 196 /*****************************************************************************
 197  * OpenDecoder: probe the decoder and return score
 198  *****************************************************************************/
 199 static int OpenDecoder( vlc_object_t *p_this )
 200 {
 201     return OpenCommon( p_this, false );
 202 }
 203
 204 static int OpenPacketizer( vlc_object_t *p_this )
 205 {
 206     return OpenCommon( p_this, true );
 207 }
 208
 209 /****************************************************************************
 210  * DecodeBlock: the whole thing
 211  ****************************************************************************
 212  * This function must be fed with Daala packets.
 213  ****************************************************************************/
 214 static void *DecodeBlock( decoder_t *p_dec, block_t *p_block )
 215 {
 216     decoder_sys_t *p_sys = p_dec->p_sys;
 217     daala_packet dpacket;
 218
 219     /* Block to Daala packet */
 220     dpacket.packet = p_block->p_buffer;
 221     dpacket.bytes = p_block->i_buffer;
 222     dpacket.granulepos = p_block->i_dts;
 223     dpacket.b_o_s = 0;
 224     dpacket.e_o_s = 0;
 225     dpacket.packetno = 0;
 226
 227     /* Check for headers */
 228     if( !p_sys->b_has_headers )
 229     {
 230         if( ProcessHeaders( p_dec ) )
 231         {
 232             block_Release( p_block );
 233             return NULL;
 234         }
 235         p_sys->b_has_headers = true;
 236     }
 237
 238     /* If we haven't seen a single keyframe yet, set to preroll,
 239      * otherwise we'll get display artifacts.  (This is impossible
 240      * in the general case, but can happen if e.g. we play a network stream
 241      * using a timed URL, such that the server doesn't start the video with a
 242      * keyframe). */
 243     if( !p_sys->b_decoded_first_keyframe )
 244         p_block->i_flags |= BLOCK_FLAG_PREROLL; /* Wait until we've decoded the first keyframe */
 245
 246     return ProcessPacket( p_dec, &dpacket, p_block );
 247 }
 248
 249 static int DecodeVideo( decoder_t *p_dec, block_t *p_block )
 250 {
 251     if( p_block == NULL ) /* No Drain */
 252         return VLCDEC_SUCCESS;
 253
 254     picture_t *p_pic = DecodeBlock( p_dec, p_block );
 255     if( p_pic != NULL )
 256         decoder_QueueVideo( p_dec, p_pic );
 257     return VLCDEC_SUCCESS;
 258 }
 259
 260 static block_t *Packetize( decoder_t *p_dec, block_t **pp_block )
 261 {
 262     if( pp_block == NULL ) /* No Drain */
 263         return NULL;
 264     block_t *p_block = *pp_block; *pp_block = NULL;
 265     if( p_block == NULL )
 266         return NULL;
 267     return DecodeBlock( p_dec, p_block );
 268 }
 269
 270 /*****************************************************************************
 271  * ProcessHeaders: process Daala headers.
 272  *****************************************************************************/
 273 static int ProcessHeaders( decoder_t *p_dec )
 274 {
 275     int ret = VLC_SUCCESS;
 276     decoder_sys_t *p_sys = p_dec->p_sys;
 277     daala_packet dpacket;
 278     daala_setup_info *ds = NULL; /* daala setup information */
 279
 280     unsigned pi_size[XIPH_MAX_HEADER_COUNT];
 281     const void *pp_data[XIPH_MAX_HEADER_COUNT];
 282     unsigned i_count;
 283     if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
 284                            p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra) )
 285         return VLC_EGENERIC;
 286     if( i_count < 3 )
 287         return VLC_EGENERIC;
 288
 289     dpacket.granulepos = -1;
 290     dpacket.e_o_s = 0;
 291     dpacket.packetno = 0;
 292
 293     /* Take care of the initial info header */
 294     dpacket.b_o_s  = 1; /* yes this actually is a b_o_s packet :) */
 295     dpacket.bytes  = pi_size[0];
 296     dpacket.packet = (void *)pp_data[0];
 297     if( daala_decode_header_in( &p_sys->di, &p_sys->dc, &ds, &dpacket ) < 0 )
 298     {
 299         msg_Err( p_dec, "this bitstream does not contain Daala video data" );
 300         ret = VLC_EGENERIC;
 301         goto cleanup;
 302     }
 303
 304     /* Set output properties */
 305     if( !p_sys->b_packetizer )
 306     {
 307         if( p_sys->di.plane_info[0].xdec == 0 && p_sys->di.plane_info[0].ydec == 0 &&
 308             p_sys->di.plane_info[1].xdec == 1 && p_sys->di.plane_info[1].ydec == 1 &&
 309             p_sys->di.plane_info[2].xdec == 1 && p_sys->di.plane_info[2].ydec == 1 )
 310         {
 311             p_dec->fmt_out.i_codec = VLC_CODEC_I420;
 312         }
 313         else if( p_sys->di.plane_info[0].xdec == 0 && p_sys->di.plane_info[0].ydec == 0 &&
 314                  p_sys->di.plane_info[1].xdec == 0 && p_sys->di.plane_info[1].ydec == 0 &&
 315                  p_sys->di.plane_info[2].xdec == 0 && p_sys->di.plane_info[2].ydec == 0 )
 316         {
 317             p_dec->fmt_out.i_codec = VLC_CODEC_I444;
 318         }
 319         else
 320         {
 321             msg_Err( p_dec, "unknown chroma in daala sample" );
 322         }
 323     }
 324
 325     p_dec->fmt_out.video.i_width = p_sys->di.pic_width;
 326     p_dec->fmt_out.video.i_height = p_sys->di.pic_height;
 327     if( p_sys->di.pic_width && p_sys->di.pic_height )
 328     {
 329         p_dec->fmt_out.video.i_visible_width = p_sys->di.pic_width;
 330         p_dec->fmt_out.video.i_visible_height = p_sys->di.pic_height;
 331     }
 332
 333     if( p_sys->di.pixel_aspect_denominator && p_sys->di.pixel_aspect_numerator )
 334     {
 335         p_dec->fmt_out.video.i_sar_num = p_sys->di.pixel_aspect_numerator;
 336         p_dec->fmt_out.video.i_sar_den = p_sys->di.pixel_aspect_denominator;
 337     }
 338     else
 339     {
 340         p_dec->fmt_out.video.i_sar_num = 1;
 341         p_dec->fmt_out.video.i_sar_den = 1;
 342     }
 343
 344     if( p_sys->di.timebase_numerator > 0 && p_sys->di.timebase_denominator > 0 )
 345     {
 346         p_dec->fmt_out.video.i_frame_rate = p_sys->di.timebase_numerator;
 347         p_dec->fmt_out.video.i_frame_rate_base = p_sys->di.timebase_denominator;
 348     }
 349
 350     msg_Dbg( p_dec, "%dx%d %.02f fps video, frame content ",
 351              p_sys->di.pic_width, p_sys->di.pic_height,
 352              (double)p_sys->di.timebase_numerator/p_sys->di.timebase_denominator );
 353
 354     /* The next packet in order is the comments header */
 355     dpacket.b_o_s  = 0;
 356     dpacket.bytes  = pi_size[1];
 357     dpacket.packet = (void *)pp_data[1];
 358
 359     if( daala_decode_header_in( &p_sys->di, &p_sys->dc, &ds, &dpacket ) < 0 )
 360     {
 361         msg_Err( p_dec, "Daala comment header is corrupted" );
 362         ret = VLC_EGENERIC;
 363         goto cleanup;
 364     }
 365
 366     ParseDaalaComments( p_dec );
 367
 368     /* The next packet in order is the setup header
 369      * We need to watch out that this packet is not missing as a
 370      * missing or corrupted header is fatal. */
 371     dpacket.b_o_s  = 0;
 372     dpacket.bytes  = pi_size[2];
 373     dpacket.packet = (void *)pp_data[2];
 374     if( daala_decode_header_in( &p_sys->di, &p_sys->dc, &ds, &dpacket ) < 0 )
 375     {
 376         msg_Err( p_dec, "Daala setup header is corrupted" );
 377         ret = VLC_EGENERIC;
 378         goto cleanup;
 379     }
 380
 381     if( !p_sys->b_packetizer )
 382     {
 383         /* We have all the headers, initialize decoder */
 384         if ( ( p_sys->dcx = daala_decode_create( &p_sys->di, ds ) ) == NULL )
 385         {
 386             msg_Err( p_dec, "Could not allocate Daala decoder" );
 387             ret = VLC_EGENERIC;
 388             goto cleanup;
 389         }
 390     }
 391     else
 392     {
 393         void* p_extra = realloc( p_dec->fmt_out.p_extra,
 394                                  p_dec->fmt_in.i_extra );
 395         if( unlikely( p_extra == NULL ) )
 396         {
 397             ret = VLC_ENOMEM;
 398             goto cleanup;
 399         }
 400         p_dec->fmt_out.p_extra = p_extra;
 401         p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
 402         memcpy( p_dec->fmt_out.p_extra,
 403                 p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
 404     }
 405
 406 cleanup:
 407     /* Clean up the decoder setup info... we're done with it */
 408     daala_setup_free( ds );
 409
 410     return ret;
 411 }
 412
 413 /*****************************************************************************
 414  * ProcessPacket: processes a daala packet.
 415  *****************************************************************************/
 416 static void *ProcessPacket( decoder_t *p_dec, daala_packet *p_dpacket,
 417                             block_t *p_block )
 418 {
 419     decoder_sys_t *p_sys = p_dec->p_sys;
 420     void *p_buf;
 421
 422     if( ( p_block->i_flags&(BLOCK_FLAG_CORRUPTED) ) != 0 )
 423     {
 424         /* Don't send the the first packet after a discontinuity to
 425          * daala_decode, otherwise we get purple/green display artifacts
 426          * appearing in the video output */
 427         block_Release(p_block);
 428         return NULL;
 429     }
 430
 431     /* Date management */
 432     if( p_block->i_pts != VLC_TICK_INVALID && p_block->i_pts != p_sys->i_pts )
 433     {
 434         p_sys->i_pts = p_block->i_pts;
 435     }
 436
 437     if( p_sys->b_packetizer )
 438     {
 439         /* Date management */
 440         p_block->i_dts = p_block->i_pts = p_sys->i_pts;
 441
 442         p_block->i_length = p_sys->i_pts - p_block->i_pts;
 443
 444         p_buf = p_block;
 445     }
 446     else
 447     {
 448         p_buf = DecodePacket( p_dec, p_dpacket );
 449         block_Release( p_block );
 450     }
 451
 452     /* Date management */
 453     p_sys->i_pts += vlc_tick_from_samples( p_sys->di.timebase_denominator,
 454                       p_sys->di.timebase_numerator ); /* 1 frame per packet */
 455
 456     return p_buf;
 457 }
 458
 459 /*****************************************************************************
 460  * DecodePacket: decodes a Daala packet.
 461  *****************************************************************************/
 462 static picture_t *DecodePacket( decoder_t *p_dec, daala_packet *p_dpacket )
 463 {
 464     decoder_sys_t *p_sys = p_dec->p_sys;
 465     picture_t *p_pic;
 466     daala_image ycbcr;
 467
 468     if (daala_decode_packet_in( p_sys->dcx, p_dpacket ) < 0)
 469         return NULL; /* bad packet */
 470
 471     if (!daala_decode_img_out( p_sys->dcx, &ycbcr ))
 472         return NULL;
 473
 474     /* Check for keyframe */
 475     if( daala_packet_iskeyframe( p_dpacket ) )
 476         p_sys->b_decoded_first_keyframe = true;
 477
 478     /* Get a new picture */
 479     if( decoder_UpdateVideoFormat( p_dec ) )
 480         return NULL;
 481     p_pic = decoder_NewPicture( p_dec );
 482     if( !p_pic ) return NULL;
 483
 484     daala_CopyPicture( p_pic, &ycbcr );
 485
 486     p_pic->date = p_sys->i_pts;
 487
 488     return p_pic;
 489 }
 490
 491 /*****************************************************************************
 492  * ParseDaalaComments:
 493  *****************************************************************************/
 494 static void ParseDaalaComments( decoder_t *p_dec )
 495 {
 496     char *psz_name, *psz_value, *psz_comment;
 497     /* Regarding the daala_comment structure: */
 498
 499     /* The metadata is stored as a series of (tag, value) pairs, in
 500        length-encoded string vectors. The first occurrence of the '='
 501        character delimits the tag and value. A particular tag may
 502        occur more than once, and order is significant. The character
 503        set encoding for the strings is always UTF-8, but the tag names
 504        are limited to ASCII, and treated as case-insensitive. See the
 505        Theora specification, Section 6.3.3 for details. */
 506
 507     /* In filling in this structure, daala_decode_header_in() will
 508        null-terminate the user_comment strings for safety. However,
 509        the bitstream format itself treats them as 8-bit clean vectors,
 510        possibly containing null characters, and so the length array
 511        should be treated as their authoritative length. */
 512     for ( int i = 0; i < p_dec->p_sys->dc.comments; i++ )
 513     {
 514         int clen = p_dec->p_sys->dc.comment_lengths[i];
 515         if ( clen <= 0 || clen >= INT_MAX ) { continue; }
 516         psz_comment = malloc( clen + 1 );
 517         if( !psz_comment )
 518             break;
 519         memcpy( (void*)psz_comment, (void*)p_dec->p_sys->dc.user_comments[i], clen + 1 );
 520         psz_comment[clen] = '\0';
 521
 522         psz_name = psz_comment;
 523         psz_value = strchr( psz_comment, '=' );
 524         if( psz_value )
 525         {
 526             *psz_value = '\0';
 527             psz_value++;
 528
 529             if( !p_dec->p_description )
 530                 p_dec->p_description = vlc_meta_New();
 531             /* TODO:  Since psz_value can contain NULLs see if there is an
 532              * instance where we need to preserve the full length of this string */
 533             if( p_dec->p_description )
 534                 vlc_meta_AddExtra( p_dec->p_description, psz_name, psz_value );
 535         }
 536         free( psz_comment );
 537     }
 538 }
 539
 540 /*****************************************************************************
 541  * CloseDecoder: daala decoder destruction
 542  *****************************************************************************/
 543 static void CloseDecoder( vlc_object_t *p_this )
 544 {
 545     decoder_t *p_dec = (decoder_t *)p_this;
 546     decoder_sys_t *p_sys = p_dec->p_sys;
 547
 548     daala_info_clear(&p_sys->di);
 549     daala_comment_clear(&p_sys->dc);
 550     daala_decode_free(p_sys->dcx);
 551     free( p_sys );
 552 }
 553
 554 /*****************************************************************************
 555  * daala_CopyPicture: copy a picture from daala internal buffers to a
 556  *                     picture_t structure.
 557  *****************************************************************************/
 558 static void daala_CopyPicture( picture_t *p_pic,
 559                                daala_image *ycbcr )
 560 {
 561     const int i_planes = p_pic->i_planes < 3 ? p_pic->i_planes : 3;
 562     for( int i_plane = 0; i_plane < i_planes; i_plane++ )
 563     {
 564         const int i_total_lines = __MIN(p_pic->p[i_plane].i_lines,
 565                 ycbcr->height >> ycbcr->planes[i_plane].ydec);
 566         uint8_t *p_dst = p_pic->p[i_plane].p_pixels;
 567         uint8_t *p_src = ycbcr->planes[i_plane].data;
 568         const int i_dst_stride  = p_pic->p[i_plane].i_pitch;
 569         const int i_src_stride  = ycbcr->planes[i_plane].ystride;
 570         for( int i_line = 0; i_line < i_total_lines; i_line++ )
 571         {
 572             memcpy( p_dst, p_src, i_src_stride );
 573             p_src += i_src_stride;
 574             p_dst += i_dst_stride;
 575         }
 576     }
 577 }
 578
 579 #ifdef ENABLE_SOUT
 580 typedef struct
 581 {
 582     daala_info      di;                     /* daala bitstream settings */
 583     daala_comment   dc;                     /* daala comment header */
 584     daala_enc_ctx   *dcx;                   /* daala context */
 585 } encoder_sys_t;
 586
 587 static int OpenEncoder( vlc_object_t *p_this )
 588 {
 589     encoder_t *p_enc = (encoder_t *)p_this;
 590     encoder_sys_t *p_sys;
 591     daala_packet header;
 592     int status;
 593
 594     if( p_enc->fmt_out.i_codec != VLC_CODEC_DAALA &&
 595         !p_enc->obj.force )
 596     {
 597         return VLC_EGENERIC;
 598     }
 599
 600     /* Allocate the memory needed to store the encoder's structure */
 601     p_sys = malloc( sizeof( encoder_sys_t ) );
 602     if( !p_sys )
 603         return VLC_ENOMEM;
 604     p_enc->p_sys = p_sys;
 605
 606     p_enc->pf_encode_video = Encode;
 607     p_enc->fmt_in.i_codec = VLC_CODEC_I420;
 608     p_enc->fmt_out.i_codec = VLC_CODEC_DAALA;
 609
 610     config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
 611
 612     char *psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX "chroma-fmt" );
 613     uint32_t i_codec;
 614     if( !psz_tmp ) {
 615         free(p_sys);
 616         return VLC_ENOMEM;
 617     } else {
 618         if( !strcmp( psz_tmp, "420" ) ) {
 619             i_codec = VLC_CODEC_I420;
 620         }
 621         else if( !strcmp( psz_tmp, "444" ) ) {
 622             i_codec = VLC_CODEC_I444;
 623         }
 624         else {
 625             msg_Err( p_enc, "Invalid chroma format: %s", psz_tmp );
 626             free( psz_tmp );
 627             free( p_sys );
 628             return VLC_EGENERIC;
 629         }
 630         free( psz_tmp );
 631         p_enc->fmt_in.i_codec = i_codec;
 632         /* update bits_per_pixel */
 633         video_format_Setup(&p_enc->fmt_in.video, i_codec,
 634                 p_enc->fmt_in.video.i_width,
 635                 p_enc->fmt_in.video.i_height,
 636                 p_enc->fmt_in.video.i_visible_width,
 637                 p_enc->fmt_in.video.i_visible_height,
 638                 p_enc->fmt_in.video.i_sar_num,
 639                 p_enc->fmt_in.video.i_sar_den);
 640     }
 641
 642     daala_info_init( &p_sys->di );
 643
 644     p_sys->di.pic_width = p_enc->fmt_in.video.i_visible_width;
 645     p_sys->di.pic_height = p_enc->fmt_in.video.i_visible_height;
 646
 647     p_sys->di.nplanes = 3;
 648     for (int i = 0; i < p_sys->di.nplanes; i++)
 649     {
 650         p_sys->di.plane_info[i].xdec = i > 0 && i_codec != VLC_CODEC_I444;
 651         p_sys->di.plane_info[i].ydec = i_codec == VLC_CODEC_I420 ?
 652             p_sys->di.plane_info[i].xdec : 0;
 653     }
 654     p_sys->di.frame_duration = 1;
 655
 656     if( !p_enc->fmt_in.video.i_frame_rate ||
 657         !p_enc->fmt_in.video.i_frame_rate_base )
 658     {
 659         p_sys->di.timebase_numerator = 25;
 660         p_sys->di.timebase_denominator = 1;
 661     }
 662     else
 663     {
 664         p_sys->di.timebase_numerator = p_enc->fmt_in.video.i_frame_rate;
 665         p_sys->di.timebase_denominator = p_enc->fmt_in.video.i_frame_rate_base;
 666     }
 667
 668     if( p_enc->fmt_in.video.i_sar_num > 0 && p_enc->fmt_in.video.i_sar_den > 0 )
 669     {
 670         unsigned i_dst_num, i_dst_den;
 671         vlc_ureduce( &i_dst_num, &i_dst_den,
 672                      p_enc->fmt_in.video.i_sar_num,
 673                      p_enc->fmt_in.video.i_sar_den, 0 );
 674         p_sys->di.pixel_aspect_numerator = i_dst_num;
 675         p_sys->di.pixel_aspect_denominator = i_dst_den;
 676     }
 677     else
 678     {
 679         p_sys->di.pixel_aspect_numerator = 4;
 680         p_sys->di.pixel_aspect_denominator = 3;
 681     }
 682
 683     p_sys->di.keyframe_rate = var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" );
 684
 685     daala_enc_ctx *dcx;
 686     p_sys->dcx = dcx = daala_encode_create( &p_sys->di );
 687     if( !dcx )
 688     {
 689         free( p_sys );
 690         return VLC_ENOMEM;
 691     }
 692
 693     daala_comment_init( &p_sys->dc );
 694
 695     int i_quality = var_GetInteger( p_enc, ENC_CFG_PREFIX "quality" );
 696     daala_encode_ctl( dcx, OD_SET_QUANT, &i_quality, sizeof(i_quality) );
 697
 698     /* Create and store headers */
 699     while( ( status = daala_encode_flush_header( dcx, &p_sys->dc, &header ) ) )
 700     {
 701         if ( status < 0 )
 702         {
 703             CloseEncoder( p_this );
 704             return VLC_EGENERIC;
 705         }
 706         if( xiph_AppendHeaders( &p_enc->fmt_out.i_extra,
 707                                 &p_enc->fmt_out.p_extra, header.bytes,
 708                                 header.packet ) )
 709         {
 710             p_enc->fmt_out.i_extra = 0;
 711             p_enc->fmt_out.p_extra = NULL;
 712         }
 713     }
 714     return VLC_SUCCESS;
 715 }
 716
 717 static block_t *Encode( encoder_t *p_enc, picture_t *p_pict )
 718 {
 719     encoder_sys_t *p_sys = p_enc->p_sys;
 720     daala_packet dpacket;
 721     block_t *p_block;
 722     daala_image img;
 723
 724     if( !p_pict ) return NULL;
 725
 726     const int i_width = p_sys->di.pic_width;
 727     const int i_height = p_sys->di.pic_height;
 728
 729     /* Sanity check */
 730     if( p_pict->p[0].i_pitch < i_width ||
 731         p_pict->p[0].i_lines < i_height )
 732     {
 733         msg_Err( p_enc, "frame is smaller than encoding size"
 734                  "(%ix%i->%ix%i) -> dropping frame",
 735                  p_pict->p[0].i_pitch, p_pict->p[0].i_lines,
 736                  i_width, i_height );
 737         return NULL;
 738     }
 739
 740     /* Daala is a one-frame-in, one-frame-out system. Submit a frame
 741      * for compression and pull out the packet. */
 742
 743     img.nplanes = p_sys->di.nplanes;
 744     img.width = i_width;
 745     img.height = i_height;
 746     for( int i = 0; i < img.nplanes; i++ )
 747     {
 748         img.planes[i].data = p_pict->p[i].p_pixels;
 749         img.planes[i].xdec = p_sys->di.plane_info[i].xdec;
 750         img.planes[i].ydec = p_sys->di.plane_info[i].ydec;
 751         img.planes[i].xstride = 1;
 752         img.planes[i].ystride = p_pict->p[i].i_pitch;
 753         img.planes[i].bitdepth = 8; /*FIXME: support higher bit depths*/
 754     }
 755
 756     if( daala_encode_img_in( p_sys->dcx, &img, 0 ) < 0 )
 757     {
 758         msg_Warn( p_enc, "failed encoding a frame" );
 759         return NULL;
 760     }
 761
 762     daala_encode_packet_out( p_sys->dcx, 0, &dpacket );
 763
 764     /* Daala packet to block */
 765     p_block = block_Alloc( dpacket.bytes );
 766     memcpy( p_block->p_buffer, dpacket.packet, dpacket.bytes );
 767     p_block->i_dts = p_block->i_pts = p_pict->date;
 768
 769     if( daala_packet_iskeyframe( &dpacket ) )
 770         p_block->i_flags |= BLOCK_FLAG_TYPE_I;
 771
 772     return p_block;
 773 }
 774
 775 static void CloseEncoder( vlc_object_t *p_this )
 776 {
 777     encoder_t *p_enc = (encoder_t *)p_this;
 778     encoder_sys_t *p_sys = p_enc->p_sys;
 779
 780     daala_info_clear(&p_sys->di);
 781     daala_comment_clear(&p_sys->dc);
 782     daala_encode_free(p_sys->dcx);
 783     free( p_sys );
 784 }
 785 #endif