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 switch( p_sys->p_dirac->seq_params.chroma )
150 case format420: p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0'); break;
151 case format422: p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','2'); break;
152 case format444: p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','4','4'); break; // XXX 0.6 ?
154 p_dec->fmt_out.i_codec = 0;
158 p_dec->fmt_out.video.i_visible_width =
159 p_dec->fmt_out.video.i_width = p_sys->p_dirac->seq_params.width;
160 p_dec->fmt_out.video.i_visible_height =
161 p_dec->fmt_out.video.i_height = p_sys->p_dirac->seq_params.height;
162 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * 4 / 3;
164 p_dec->fmt_out.video.i_frame_rate =
165 p_sys->p_dirac->src_params.frame_rate.numerator;
166 p_dec->fmt_out.video.i_frame_rate_base =
167 p_sys->p_dirac->src_params.frame_rate.denominator;
169 /* Get a new picture */
170 p_pic = p_dec->pf_vout_buffer_new( p_dec );
172 if( p_pic == NULL ) return NULL;
173 p_pic->b_progressive = !p_sys->p_dirac->src_params.interlace;
174 p_pic->b_top_field_first = p_sys->p_dirac->src_params.topfieldfirst;
176 p_pic->i_nb_fields = 2;
178 /* Copy picture stride by stride */
179 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
181 int i_line, i_width, i_dst_stride;
182 uint8_t *p_src = p_sys->p_dirac->fbuf->buf[i_plane];
183 uint8_t *p_dst = p_pic->p[i_plane].p_pixels;
185 i_width = p_pic->p[i_plane].i_visible_pitch;
186 i_dst_stride = p_pic->p[i_plane].i_pitch;
188 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
190 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_width );
192 p_dst += i_dst_stride;
199 /*****************************************************************************
200 * CloseDecoder: decoder destruction
201 *****************************************************************************/
202 static void CloseDecoder( vlc_object_t *p_this )
204 decoder_t *p_dec = (decoder_t *)p_this;
205 decoder_sys_t *p_sys = p_dec->p_sys;
207 FreeFrameBuffer( p_sys->p_dirac );
208 dirac_decoder_close( p_sys->p_dirac );
212 /****************************************************************************
213 * DecodeBlock: the whole thing
214 ****************************************************************************
215 * This function must be fed with complete frames.
216 ****************************************************************************/
217 static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
219 decoder_sys_t *p_sys = p_dec->p_sys;
220 dirac_decoder_state_t state;
224 if( !pp_block || !*pp_block ) return NULL;
230 state = dirac_parse( p_sys->p_dirac );
235 if( !p_block->i_buffer )
237 block_Release( p_block );
241 msg_Dbg( p_dec, "STATE_BUFFER" );
242 dirac_buffer( p_sys->p_dirac, p_block->p_buffer,
243 p_block->p_buffer + p_block->i_buffer );
245 p_block->i_buffer = 0;
250 /* Initialize video output */
253 msg_Dbg( p_dec, "%dx%d, chroma %i, %f fps",
254 p_sys->p_dirac->seq_params.width,
255 p_sys->p_dirac->seq_params.height,
256 p_sys->p_dirac->seq_params.chroma,
257 (float)p_sys->p_dirac->src_params.frame_rate.numerator/
258 p_sys->p_dirac->src_params.frame_rate.denominator );
260 FreeFrameBuffer( p_sys->p_dirac );
261 buf[0] = malloc( p_sys->p_dirac->seq_params.width *
262 p_sys->p_dirac->seq_params.height );
263 buf[1] = malloc( p_sys->p_dirac->seq_params.chroma_width *
264 p_sys->p_dirac->seq_params.chroma_height );
265 buf[2] = malloc( p_sys->p_dirac->seq_params.chroma_width *
266 p_sys->p_dirac->seq_params.chroma_height );
268 dirac_set_buf( p_sys->p_dirac, buf, NULL );
272 case STATE_SEQUENCE_END:
273 msg_Dbg( p_dec, "SEQUENCE_END" );
274 FreeFrameBuffer( p_sys->p_dirac );
277 case STATE_PICTURE_START:
278 msg_Dbg( p_dec, "PICTURE_START: frame_type=%i frame_num=%d",
279 p_sys->p_dirac->frame_params.ftype,
280 p_sys->p_dirac->frame_params.fnum );
283 case STATE_PICTURE_AVAIL:
284 msg_Dbg( p_dec, "PICTURE_AVAI : frame_type=%i frame_num=%d",
285 p_sys->p_dirac->frame_params.ftype,
286 p_sys->p_dirac->frame_params.fnum );
288 /* Picture available for display */
289 p_pic = GetNewPicture( p_dec );
290 p_pic->date = p_block->i_pts > 0 ? p_block->i_pts : p_block->i_dts;
291 p_pic->b_force = 1; // HACK
296 msg_Dbg( p_dec, "STATE_INVALID" );
308 /*****************************************************************************
309 * encoder_sys_t : dirac encoder descriptor
310 *****************************************************************************/
311 #define ENC_BUFSIZE 1024*1024
317 dirac_encoder_t *p_dirac;
318 dirac_encoder_context_t ctx;
320 uint8_t *p_buffer_in;
323 uint8_t p_buffer_out[ENC_BUFSIZE];
326 /*****************************************************************************
327 * OpenEncoder: probe the encoder and return score
328 *****************************************************************************/
329 static int OpenEncoder( vlc_object_t *p_this )
331 encoder_t *p_enc = (encoder_t *)p_this;
332 encoder_sys_t *p_sys = p_enc->p_sys;
336 if( p_enc->fmt_out.i_codec != VLC_FOURCC('d','r','a','c') &&
342 /* Allocate the memory needed to store the decoder's structure */
343 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
345 msg_Err( p_enc, "out of memory" );
348 memset( p_sys, 0, sizeof(encoder_sys_t) );
349 p_enc->p_sys = p_sys;
351 p_enc->pf_encode_video = Encode;
352 p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
353 p_enc->fmt_in.video.i_bits_per_pixel = 12;
354 p_enc->fmt_out.i_codec = VLC_FOURCC('d','r','a','c');
356 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
358 dirac_encoder_context_init( &p_sys->ctx, VIDEO_FORMAT_CUSTOM );
360 p_sys->ctx.seq_params.width = p_enc->fmt_in.video.i_width;
361 p_sys->ctx.seq_params.height = p_enc->fmt_in.video.i_height;
362 p_sys->ctx.seq_params.chroma = format420;
364 p_sys->ctx.src_params.frame_rate.numerator =
365 p_enc->fmt_in.video.i_frame_rate;
366 p_sys->ctx.src_params.frame_rate.denominator =
367 p_enc->fmt_in.video.i_frame_rate_base;
368 p_sys->ctx.src_params.interlace = 0;
369 p_sys->ctx.src_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 );