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