1 /*****************************************************************************
2 * dirac.c: Dirac decoder/encoder module making use of libdirac.
3 * (http://www.bbc.co.uk/rd/projects/dirac/index.shtml)
4 *****************************************************************************
5 * Copyright (C) 1999-2001 the VideoLAN team
8 * Authors: Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <vlc_codec.h>
33 #include <libdirac_decoder/dirac_parser.h>
34 #include <libdirac_encoder/dirac_encoder.h>
36 /*****************************************************************************
37 * decoder_sys_t : theora decoder descriptor
38 *****************************************************************************/
44 dirac_decoder_t *p_dirac;
47 /*****************************************************************************
49 *****************************************************************************/
50 static int OpenDecoder ( vlc_object_t * );
51 static void CloseDecoder ( vlc_object_t * );
52 static picture_t *DecodeBlock ( decoder_t *p_dec, block_t **pp_block );
54 static int OpenEncoder( vlc_object_t *p_this );
55 static void CloseEncoder( vlc_object_t *p_this );
56 static block_t *Encode( encoder_t *p_enc, picture_t *p_pict );
58 #define ENC_CFG_PREFIX "sout-dirac-"
60 static const char *ppsz_enc_options[] = {
64 /*****************************************************************************
66 *****************************************************************************/
67 #define ENC_QUALITY_TEXT N_("Encoding quality")
68 #define ENC_QUALITY_LONGTEXT N_( \
69 "Quality of the encoding between 1.0 (low) and 10.0 (high)." )
72 set_category( CAT_INPUT );
73 set_subcategory( SUBCAT_INPUT_VCODEC );
74 set_description( _("Dirac video decoder") );
75 set_capability( "decoder", 100 );
76 set_callbacks( OpenDecoder, CloseDecoder );
77 add_shortcut( "dirac" );
80 set_description( _("Dirac video encoder") );
81 set_capability( "encoder", 100 );
82 set_callbacks( OpenEncoder, CloseEncoder );
83 add_shortcut( "dirac" );
84 add_float( ENC_CFG_PREFIX "quality", 7.0, NULL, ENC_QUALITY_TEXT,
85 ENC_QUALITY_LONGTEXT, VLC_FALSE );
89 /*****************************************************************************
90 * OpenDecoder: probe the decoder and return score
91 *****************************************************************************/
92 static int OpenDecoder( vlc_object_t *p_this )
94 decoder_t *p_dec = (decoder_t*)p_this;
96 dirac_decoder_t *p_dirac;
98 if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','r','a','c') )
103 /* Initialise the dirac decoder */
104 if( !(p_dirac = dirac_decoder_init(0)) ) return VLC_EGENERIC;
106 /* Allocate the memory needed to store the decoder's structure */
107 if( ( p_dec->p_sys = p_sys =
108 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
110 msg_Err( p_dec, "out of memory" );
114 p_sys->p_dirac = p_dirac;
116 /* Set output properties */
117 p_dec->fmt_out.i_cat = VIDEO_ES;
118 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
121 p_dec->pf_decode_video = DecodeBlock;
126 static void FreeFrameBuffer( dirac_decoder_t *p_dirac )
131 for( i = 0; i < 3; i++ )
133 if( p_dirac->fbuf->buf[i] ) free( p_dirac->fbuf->buf[i] );
134 p_dirac->fbuf->buf[i] = 0;
139 /*****************************************************************************
140 * GetNewPicture: Get a new picture from the vout and copy the decoder output
141 *****************************************************************************/
142 static picture_t *GetNewPicture( decoder_t *p_dec )
144 decoder_sys_t *p_sys = p_dec->p_sys;
148 p_dec->fmt_out.i_codec =
149 p_sys->p_dirac->seq_params.chroma == format411 ?
150 VLC_FOURCC('I','4','1','1') :
151 p_sys->p_dirac->seq_params.chroma == format420 ?
152 VLC_FOURCC('I','4','2','0') :
153 p_sys->p_dirac->seq_params.chroma == format422 ?
154 VLC_FOURCC('I','4','2','2') : 0;
156 p_dec->fmt_out.video.i_visible_width =
157 p_dec->fmt_out.video.i_width = p_sys->p_dirac->seq_params.width;
158 p_dec->fmt_out.video.i_visible_height =
159 p_dec->fmt_out.video.i_height = p_sys->p_dirac->seq_params.height;
160 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * 4 / 3;
162 p_dec->fmt_out.video.i_frame_rate =
163 p_sys->p_dirac->seq_params.frame_rate.numerator;
164 p_dec->fmt_out.video.i_frame_rate_base =
165 p_sys->p_dirac->seq_params.frame_rate.denominator;
167 /* Get a new picture */
168 p_pic = p_dec->pf_vout_buffer_new( p_dec );
170 if( p_pic == NULL ) return NULL;
172 p_pic->b_progressive = !p_sys->p_dirac->seq_params.interlace;
173 p_pic->b_top_field_first = p_sys->p_dirac->seq_params.topfieldfirst;
174 p_pic->i_nb_fields = 2;
176 /* Copy picture stride by stride */
177 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
179 int i_line, i_width, i_dst_stride;
180 uint8_t *p_src = p_sys->p_dirac->fbuf->buf[i_plane];
181 uint8_t *p_dst = p_pic->p[i_plane].p_pixels;
183 i_width = p_pic->p[i_plane].i_visible_pitch;
184 i_dst_stride = p_pic->p[i_plane].i_pitch;
186 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
188 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_width );
190 p_dst += i_dst_stride;
197 /*****************************************************************************
198 * CloseDecoder: decoder destruction
199 *****************************************************************************/
200 static void CloseDecoder( vlc_object_t *p_this )
202 decoder_t *p_dec = (decoder_t *)p_this;
203 decoder_sys_t *p_sys = p_dec->p_sys;
205 FreeFrameBuffer( p_sys->p_dirac );
206 dirac_decoder_close( p_sys->p_dirac );
210 /****************************************************************************
211 * DecodeBlock: the whole thing
212 ****************************************************************************
213 * This function must be fed with complete frames.
214 ****************************************************************************/
215 static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
217 decoder_sys_t *p_sys = p_dec->p_sys;
218 dirac_decoder_state_t state;
222 if( !pp_block || !*pp_block ) return NULL;
228 state = dirac_parse( p_sys->p_dirac );
233 if( !p_block->i_buffer )
235 block_Release( p_block );
239 msg_Dbg( p_dec, "STATE_BUFFER" );
240 dirac_buffer( p_sys->p_dirac, p_block->p_buffer,
241 p_block->p_buffer + p_block->i_buffer );
243 p_block->i_buffer = 0;
248 /* Initialize video output */
251 msg_Dbg( p_dec, "%dx%d, chroma %i, %f fps",
252 p_sys->p_dirac->seq_params.width,
253 p_sys->p_dirac->seq_params.height,
254 p_sys->p_dirac->seq_params.chroma,
255 (float)p_sys->p_dirac->seq_params.frame_rate.numerator/
256 p_sys->p_dirac->seq_params.frame_rate.denominator );
258 FreeFrameBuffer( p_sys->p_dirac );
259 buf[0] = malloc( p_sys->p_dirac->seq_params.width *
260 p_sys->p_dirac->seq_params.height );
261 buf[1] = malloc( p_sys->p_dirac->seq_params.chroma_width *
262 p_sys->p_dirac->seq_params.chroma_height );
263 buf[2] = malloc( p_sys->p_dirac->seq_params.chroma_width *
264 p_sys->p_dirac->seq_params.chroma_height );
266 dirac_set_buf( p_sys->p_dirac, buf, NULL );
270 case STATE_SEQUENCE_END:
271 msg_Dbg( p_dec, "SEQUENCE_END" );
272 FreeFrameBuffer( p_sys->p_dirac );
275 case STATE_PICTURE_START:
276 msg_Dbg( p_dec, "PICTURE_START: frame_type=%i frame_num=%d",
277 p_sys->p_dirac->frame_params.ftype,
278 p_sys->p_dirac->frame_params.fnum );
281 case STATE_PICTURE_AVAIL:
282 msg_Dbg( p_dec, "PICTURE_AVAI : frame_type=%i frame_num=%d",
283 p_sys->p_dirac->frame_params.ftype,
284 p_sys->p_dirac->frame_params.fnum );
286 /* Picture available for display */
287 p_pic = GetNewPicture( p_dec );
288 p_pic->date = p_block->i_pts > 0 ? p_block->i_pts : p_block->i_dts;
289 p_pic->b_force = 1; // HACK
294 msg_Dbg( p_dec, "STATE_INVALID" );
306 /*****************************************************************************
307 * encoder_sys_t : dirac encoder descriptor
308 *****************************************************************************/
309 #define ENC_BUFSIZE 1024*1024
315 dirac_encoder_t *p_dirac;
316 dirac_encoder_context_t ctx;
318 uint8_t *p_buffer_in;
321 uint8_t p_buffer_out[ENC_BUFSIZE];
324 /*****************************************************************************
325 * OpenEncoder: probe the encoder and return score
326 *****************************************************************************/
327 static int OpenEncoder( vlc_object_t *p_this )
329 encoder_t *p_enc = (encoder_t *)p_this;
330 encoder_sys_t *p_sys = p_enc->p_sys;
334 if( p_enc->fmt_out.i_codec != VLC_FOURCC('d','r','a','c') &&
340 /* Allocate the memory needed to store the decoder's structure */
341 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
343 msg_Err( p_enc, "out of memory" );
346 memset( p_sys, 0, sizeof(encoder_sys_t) );
347 p_enc->p_sys = p_sys;
349 p_enc->pf_encode_video = Encode;
350 p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
351 p_enc->fmt_in.video.i_bits_per_pixel = 12;
352 p_enc->fmt_out.i_codec = VLC_FOURCC('d','r','a','c');
354 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
356 /* Initialse the encoder context with the presets for SD576 - Standard
357 * Definition Digital (some parameters will be overwritten later on) */
358 dirac_encoder_context_init( &p_sys->ctx, SD576 );
360 /* Override parameters if required */
361 p_sys->ctx.seq_params.width = p_enc->fmt_in.video.i_width;
362 p_sys->ctx.seq_params.height = p_enc->fmt_in.video.i_height;
363 p_sys->ctx.seq_params.chroma = format420;
364 p_sys->ctx.seq_params.frame_rate.numerator =
365 p_enc->fmt_in.video.i_frame_rate;
366 p_sys->ctx.seq_params.frame_rate.denominator =
367 p_enc->fmt_in.video.i_frame_rate_base;
368 p_sys->ctx.seq_params.interlace = 0;
369 p_sys->ctx.seq_params.topfieldfirst = 0;
371 var_Get( p_enc, ENC_CFG_PREFIX "quality", &val );
372 f_quality = val.f_float;
373 if( f_quality > 10 ) f_quality = 10;
374 if( f_quality < 1 ) f_quality = 1;
375 p_sys->ctx.enc_params.qf = f_quality;
377 /* Initialise the encoder with the encoder context */
378 p_sys->p_dirac = dirac_encoder_init( &p_sys->ctx, 0 );
380 /* Set the buffer size for the encoded picture */
381 p_sys->i_buffer_in = p_enc->fmt_in.video.i_width *
382 p_enc->fmt_in.video.i_height * 3 / 2;
383 p_sys->p_buffer_in = malloc( p_sys->i_buffer_in );
388 /****************************************************************************
389 * Encode: the whole thing
390 ****************************************************************************
391 * This function spits out ogg packets.
392 ****************************************************************************/
393 static block_t *Encode( encoder_t *p_enc, picture_t *p_pic )
395 encoder_sys_t *p_sys = p_enc->p_sys;
396 block_t *p_block, *p_chain = NULL;
397 int i_plane, i_line, i_width, i_src_stride;
400 /* Copy input picture in encoder input buffer (stride by stride) */
401 p_dst = p_sys->p_buffer_in;
402 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
404 uint8_t *p_src = p_pic->p[i_plane].p_pixels;
405 i_width = p_pic->p[i_plane].i_visible_pitch;
406 i_src_stride = p_pic->p[i_plane].i_pitch;
408 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
410 p_enc->p_libvlc->pf_memcpy( p_dst, p_src, i_width );
412 p_src += i_src_stride;
416 /* Load one frame of data into encoder */
417 if( dirac_encoder_load( p_sys->p_dirac, p_sys->p_buffer_in,
418 p_sys->i_buffer_in ) >= 0 )
420 dirac_encoder_state_t state;
422 msg_Dbg( p_enc, "dirac_encoder_load" );
424 /* Retrieve encoded frames from encoder */
427 p_sys->p_dirac->enc_buf.buffer = p_sys->p_buffer_out;
428 p_sys->p_dirac->enc_buf.size = ENC_BUFSIZE;
429 state = dirac_encoder_output( p_sys->p_dirac );
430 msg_Dbg( p_enc, "dirac_encoder_output: %i", state );
433 case ENC_STATE_AVAIL:
434 // Encoded frame available in encoder->enc_buf
435 // Encoded frame params available in enccoder->enc_fparams
436 // Encoded frame stats available in enccoder->enc_fstats
437 p_block = block_New( p_enc, p_sys->p_dirac->enc_buf.size );
438 memcpy( p_block->p_buffer, p_sys->p_dirac->enc_buf.buffer,
439 p_sys->p_dirac->enc_buf.size );
440 p_block->i_dts = p_block->i_pts = p_pic->date;
441 block_ChainAppend( &p_chain, p_block );
444 case ENC_STATE_BUFFER:
446 case ENC_STATE_INVALID:
450 if( p_sys->p_dirac->decoded_frame_avail )
452 //locally decoded frame is available in
454 //locally decoded frame parameters available
455 //in encoder->dec_fparams
457 if( p_sys->p_dirac->instr_data_avail )
459 //Instrumentation data (motion vectors etc.)
460 //available in encoder->instr
463 } while( state == ENC_STATE_AVAIL );
467 msg_Dbg( p_enc, "dirac_encoder_load() error" );
473 /*****************************************************************************
474 * CloseEncoder: dirac encoder destruction
475 *****************************************************************************/
476 static void CloseEncoder( vlc_object_t *p_this )
478 encoder_t *p_enc = (encoder_t *)p_this;
479 encoder_sys_t *p_sys = p_enc->p_sys;
481 msg_Dbg( p_enc, "resulting bit-rate: %i bits/sec",
482 p_sys->p_dirac->enc_seqstats.bit_rate );
484 /* Free the encoder resources */
485 dirac_encoder_close( p_sys->p_dirac );
487 free( p_sys->p_buffer_in );