1 /*****************************************************************************
2 * es_format.c : es_format_t helpers.
3 *****************************************************************************
4 * Copyright (C) 2008 VLC authors and VideoLAN
7 * Author: Laurent Aimar <fenrir@videolan.org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
36 /*****************************************************************************
37 * BinaryLog: computes the base 2 log of a binary value
38 *****************************************************************************
39 * This functions is used by MaskToShift, to get a bit index from a binary
41 *****************************************************************************/
42 static int BinaryLog( uint32_t i )
46 if( i == 0 ) return -31337;
48 if( i & 0xffff0000 ) i_log += 16;
49 if( i & 0xff00ff00 ) i_log += 8;
50 if( i & 0xf0f0f0f0 ) i_log += 4;
51 if( i & 0xcccccccc ) i_log += 2;
52 if( i & 0xaaaaaaaa ) i_log += 1;
58 * It transforms a color mask into right and left shifts
59 * FIXME copied from video_output.c
61 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
63 uint32_t i_low, i_high; /* lower and higher bits of the mask */
67 *pi_left = *pi_right = 0;
72 i_low = i_high = i_mask;
74 i_low &= - (int32_t)i_low; /* lower bit of the mask */
75 i_high += i_low; /* higher bit of the mask */
77 /* Transform bits into an index. Also deal with i_high overflow, which
78 * is faster than changing the BinaryLog code to handle 64 bit integers. */
79 i_low = BinaryLog (i_low);
80 i_high = i_high ? BinaryLog (i_high) : 32;
82 /* Update pointers and return */
84 *pi_right = (8 - i_high + i_low);
88 void video_format_FixRgb( video_format_t *p_fmt )
90 /* FIXME find right default mask */
91 if( !p_fmt->i_rmask || !p_fmt->i_gmask || !p_fmt->i_bmask )
93 switch( p_fmt->i_chroma )
96 p_fmt->i_rmask = 0x7c00;
97 p_fmt->i_gmask = 0x03e0;
98 p_fmt->i_bmask = 0x001f;
101 case VLC_CODEC_RGB16:
102 p_fmt->i_rmask = 0xf800;
103 p_fmt->i_gmask = 0x07e0;
104 p_fmt->i_bmask = 0x001f;
107 case VLC_CODEC_RGB24:
108 p_fmt->i_rmask = 0xff0000;
109 p_fmt->i_gmask = 0x00ff00;
110 p_fmt->i_bmask = 0x0000ff;
112 case VLC_CODEC_RGB32:
113 p_fmt->i_rmask = 0x00ff0000;
114 p_fmt->i_gmask = 0x0000ff00;
115 p_fmt->i_bmask = 0x000000ff;
123 MaskToShift( &p_fmt->i_lrshift, &p_fmt->i_rrshift,
125 MaskToShift( &p_fmt->i_lgshift, &p_fmt->i_rgshift,
127 MaskToShift( &p_fmt->i_lbshift, &p_fmt->i_rbshift,
131 void video_format_Setup( video_format_t *p_fmt, vlc_fourcc_t i_chroma,
132 int i_width, int i_height,
133 int i_visible_width, int i_visible_height,
134 int i_sar_num, int i_sar_den )
136 p_fmt->i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
137 p_fmt->i_width = i_width;
138 p_fmt->i_visible_width = i_visible_width;
139 p_fmt->i_height = i_height;
140 p_fmt->i_visible_height = i_visible_height;
142 p_fmt->i_y_offset = 0;
143 vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
144 i_sar_num, i_sar_den, 0 );
146 switch( p_fmt->i_chroma )
149 p_fmt->i_bits_per_pixel = 32;
151 case VLC_CODEC_YUV420A:
152 p_fmt->i_bits_per_pixel = 20;
154 case VLC_CODEC_YUV422A:
155 p_fmt->i_bits_per_pixel = 24;
159 p_fmt->i_bits_per_pixel = 24;
167 p_fmt->i_bits_per_pixel = 16;
171 p_fmt->i_bits_per_pixel = 16;
177 p_fmt->i_bits_per_pixel = 12;
181 p_fmt->i_bits_per_pixel = 9;
184 p_fmt->i_bits_per_pixel = 8;
187 p_fmt->i_bits_per_pixel = 8;
190 case VLC_CODEC_RGB32:
193 p_fmt->i_bits_per_pixel = 32;
195 case VLC_CODEC_RGB24:
196 p_fmt->i_bits_per_pixel = 24;
198 case VLC_CODEC_RGB15:
199 case VLC_CODEC_RGB16:
200 p_fmt->i_bits_per_pixel = 16;
203 p_fmt->i_bits_per_pixel = 8;
208 p_fmt->i_bits_per_pixel = 8;
211 case VLC_CODEC_XYZ12:
212 p_fmt->i_bits_per_pixel = 48;
216 p_fmt->i_bits_per_pixel = 0;
221 void video_format_CopyCrop( video_format_t *p_dst, const video_format_t *p_src )
223 p_dst->i_x_offset = p_src->i_x_offset;
224 p_dst->i_y_offset = p_src->i_y_offset;
225 p_dst->i_visible_width = p_src->i_visible_width;
226 p_dst->i_visible_height = p_src->i_visible_height;
229 void video_format_ScaleCropAr( video_format_t *p_dst, const video_format_t *p_src )
231 p_dst->i_x_offset = (uint64_t)p_src->i_x_offset * p_dst->i_width / p_src->i_width;
232 p_dst->i_y_offset = (uint64_t)p_src->i_y_offset * p_dst->i_height / p_src->i_height;
233 p_dst->i_visible_width = (uint64_t)p_src->i_visible_width * p_dst->i_width / p_src->i_width;
234 p_dst->i_visible_height = (uint64_t)p_src->i_visible_height * p_dst->i_height / p_src->i_height;
236 p_dst->i_sar_num *= p_src->i_width;
237 p_dst->i_sar_den *= p_dst->i_width;
238 vlc_ureduce(&p_dst->i_sar_num, &p_dst->i_sar_den,
239 p_dst->i_sar_num, p_dst->i_sar_den, 65536);
241 p_dst->i_sar_num *= p_dst->i_height;
242 p_dst->i_sar_den *= p_src->i_height;
243 vlc_ureduce(&p_dst->i_sar_num, &p_dst->i_sar_den,
244 p_dst->i_sar_num, p_dst->i_sar_den, 65536);
247 //Simplify transforms to have something more managable. Order: angle, hflip.
248 static void transform_GetBasicOps( video_transform_t transform,
249 unsigned *restrict angle,
250 bool *restrict hflip )
252 *hflip = ORIENT_IS_MIRROR(transform);
257 case TRANSFORM_TRANSPOSE:
261 case TRANSFORM_VFLIP:
265 case TRANSFORM_ANTI_TRANSPOSE:
268 case TRANSFORM_HFLIP:
269 case TRANSFORM_IDENTITY:
275 static video_transform_t transform_FromBasicOps( unsigned angle, bool hflip )
280 return hflip ? TRANSFORM_TRANSPOSE : TRANSFORM_R90;
282 return hflip ? TRANSFORM_VFLIP : TRANSFORM_R180;
284 return hflip ? TRANSFORM_ANTI_TRANSPOSE : TRANSFORM_R270;
286 return hflip ? TRANSFORM_HFLIP : TRANSFORM_IDENTITY;
290 video_transform_t video_format_GetTransform( video_orientation_t src,
291 video_orientation_t dst )
293 unsigned angle1, angle2;
296 transform_GetBasicOps( (video_transform_t)src, &angle1, &hflip1 );
297 transform_GetBasicOps( transform_Inverse( (video_transform_t)dst ),
300 int angle = (angle1 + angle2) % 360;
301 bool hflip = hflip1 ^ hflip2;
303 return transform_FromBasicOps(angle, hflip);
306 void video_format_TransformBy( video_format_t *fmt, video_transform_t transform )
308 /* Get destination orientation */
309 unsigned angle1, angle2;
312 transform_GetBasicOps( transform, &angle1, &hflip1 );
313 transform_GetBasicOps( (video_transform_t)fmt->orientation, &angle2, &hflip2 );
315 unsigned angle = (angle2 - angle1 + 360) % 360;
316 bool hflip = hflip2 ^ hflip1;
318 video_orientation_t dst_orient = ORIENT_NORMAL;
323 dst_orient = ORIENT_HFLIPPED;
324 else if( angle == 90 )
325 dst_orient = ORIENT_ANTI_TRANSPOSED;
326 else if( angle == 180 )
327 dst_orient = ORIENT_VFLIPPED;
328 else if( angle == 270 )
329 dst_orient = ORIENT_TRANSPOSED;
334 dst_orient = ORIENT_ROTATED_90;
335 else if( angle == 180 )
336 dst_orient = ORIENT_ROTATED_180;
337 else if( angle == 270 )
338 dst_orient = ORIENT_ROTATED_270;
341 /* Apply transform */
342 if( ORIENT_IS_SWAP( fmt->orientation ) != ORIENT_IS_SWAP( dst_orient ) )
344 video_format_t scratch = *fmt;
346 fmt->i_width = scratch.i_height;
347 fmt->i_visible_width = scratch.i_visible_height;
348 fmt->i_height = scratch.i_width;
349 fmt->i_visible_height = scratch.i_visible_width;
350 fmt->i_x_offset = scratch.i_y_offset;
351 fmt->i_y_offset = scratch.i_x_offset;
352 fmt->i_sar_num = scratch.i_sar_den;
353 fmt->i_sar_den = scratch.i_sar_num;
356 fmt->orientation = dst_orient;
359 void video_format_TransformTo( video_format_t *restrict fmt,
360 video_orientation_t dst_orientation )
362 video_transform_t transform = video_format_GetTransform(fmt->orientation,
364 video_format_TransformBy(fmt, transform);
367 void video_format_ApplyRotation( video_format_t *restrict out,
368 const video_format_t *restrict in )
372 video_format_TransformTo(out, ORIENT_NORMAL);
375 bool video_format_IsSimilar( const video_format_t *p_fmt1, const video_format_t *p_fmt2 )
377 video_format_t v1 = *p_fmt1;
378 video_format_t v2 = *p_fmt2;
380 if( v1.i_chroma != v2.i_chroma )
383 if( v1.i_width != v2.i_width || v1.i_height != v2.i_height ||
384 v1.i_visible_width != v2.i_visible_width ||
385 v1.i_visible_height != v2.i_visible_height ||
386 v1.i_x_offset != v2.i_x_offset || v1.i_y_offset != v2.i_y_offset )
388 if( v1.i_sar_num * v2.i_sar_den != v2.i_sar_num * v1.i_sar_den )
391 if( v1.orientation != v2.orientation)
394 if( v1.i_chroma == VLC_CODEC_RGB15 ||
395 v1.i_chroma == VLC_CODEC_RGB16 ||
396 v1.i_chroma == VLC_CODEC_RGB24 ||
397 v1.i_chroma == VLC_CODEC_RGB32 )
399 video_format_FixRgb( &v1 );
400 video_format_FixRgb( &v2 );
402 if( v1.i_rmask != v2.i_rmask ||
403 v1.i_gmask != v2.i_gmask ||
404 v1.i_bmask != v2.i_bmask )
409 void video_format_Print( vlc_object_t *p_this,
410 const char *psz_text, const video_format_t *fmt )
413 "%s sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, sar %i:%i, msk r0x%x g0x%x b0x%x",
415 fmt->i_width, fmt->i_height, fmt->i_x_offset, fmt->i_y_offset,
416 fmt->i_visible_width, fmt->i_visible_height,
417 (char*)&fmt->i_chroma,
418 fmt->i_sar_num, fmt->i_sar_den,
419 fmt->i_rmask, fmt->i_gmask, fmt->i_bmask );
422 void es_format_Init( es_format_t *fmt,
423 int i_cat, vlc_fourcc_t i_codec )
426 fmt->i_codec = i_codec;
427 fmt->i_original_fourcc = 0;
432 fmt->i_priority = ES_PRIORITY_SELECTABLE_MIN;
433 fmt->psz_language = NULL;
434 fmt->psz_description = NULL;
436 fmt->i_extra_languages = 0;
437 fmt->p_extra_languages = NULL;
439 memset( &fmt->audio, 0, sizeof(audio_format_t) );
440 memset( &fmt->audio_replay_gain, 0, sizeof(audio_replay_gain_t) );
441 memset( &fmt->video, 0, sizeof(video_format_t) );
442 memset( &fmt->subs, 0, sizeof(subs_format_t) );
444 fmt->b_packetized = true;
450 void es_format_InitFromVideo( es_format_t *p_es, const video_format_t *p_fmt )
452 es_format_Init( p_es, VIDEO_ES, p_fmt->i_chroma );
453 video_format_Copy( &p_es->video, p_fmt );
456 int es_format_Copy( es_format_t *dst, const es_format_t *src )
459 memcpy( dst, src, sizeof( es_format_t ) );
460 dst->psz_language = src->psz_language ? strdup( src->psz_language ) : NULL;
461 dst->psz_description = src->psz_description ? strdup( src->psz_description ) : NULL;
462 if( src->i_extra > 0 && dst->p_extra )
464 dst->i_extra = src->i_extra;
465 dst->p_extra = malloc( src->i_extra );
467 memcpy( dst->p_extra, src->p_extra, src->i_extra );
477 dst->subs.psz_encoding = dst->subs.psz_encoding ? strdup( src->subs.psz_encoding ) : NULL;
478 dst->subs.p_style = src->subs.p_style ? text_style_Duplicate( src->subs.p_style ) : NULL;
480 if( src->video.p_palette )
482 dst->video.p_palette =
483 (video_palette_t*)malloc( sizeof( video_palette_t ) );
484 if(dst->video.p_palette)
486 memcpy( dst->video.p_palette, src->video.p_palette,
487 sizeof( video_palette_t ) );
491 if( dst->i_extra_languages && src->p_extra_languages)
493 dst->i_extra_languages = src->i_extra_languages;
494 dst->p_extra_languages = (extra_languages_t*)
495 malloc(dst->i_extra_languages * sizeof(*dst->p_extra_languages ));
496 if( dst->p_extra_languages )
498 for( i = 0; i < dst->i_extra_languages; i++ ) {
499 if( src->p_extra_languages[i].psz_language )
500 dst->p_extra_languages[i].psz_language = strdup( src->p_extra_languages[i].psz_language );
502 dst->p_extra_languages[i].psz_language = NULL;
503 if( src->p_extra_languages[i].psz_description )
504 dst->p_extra_languages[i].psz_description = strdup( src->p_extra_languages[i].psz_description );
506 dst->p_extra_languages[i].psz_description = NULL;
510 dst->i_extra_languages = 0;
513 dst->i_extra_languages = 0;
517 void es_format_Clean( es_format_t *fmt )
519 free( fmt->psz_language );
520 free( fmt->psz_description );
522 if( fmt->i_extra > 0 ) free( fmt->p_extra );
524 free( fmt->video.p_palette );
525 free( fmt->subs.psz_encoding );
527 if ( fmt->subs.p_style ) text_style_Delete( fmt->subs.p_style );
529 if( fmt->i_extra_languages > 0 && fmt->p_extra_languages )
532 for( i = 0; i < fmt->i_extra_languages; i++ )
534 free( fmt->p_extra_languages[i].psz_language );
535 free( fmt->p_extra_languages[i].psz_description );
537 free( fmt->p_extra_languages );
540 /* es_format_Clean can be called multiple times */
541 memset( fmt, 0, sizeof(*fmt) );
544 bool es_format_IsSimilar( const es_format_t *p_fmt1, const es_format_t *p_fmt2 )
546 if( p_fmt1->i_cat != p_fmt2->i_cat ||
547 vlc_fourcc_GetCodec( p_fmt1->i_cat, p_fmt1->i_codec ) !=
548 vlc_fourcc_GetCodec( p_fmt2->i_cat, p_fmt2->i_codec ) )
551 switch( p_fmt1->i_cat )
555 audio_format_t a1 = p_fmt1->audio;
556 audio_format_t a2 = p_fmt2->audio;
558 if( a1.i_format && a2.i_format && a1.i_format != a2.i_format )
560 if( a1.i_rate != a2.i_rate ||
561 a1.i_physical_channels != a2.i_physical_channels ||
562 a1.i_original_channels != a2.i_original_channels )
569 video_format_t v1 = p_fmt1->video;
570 video_format_t v2 = p_fmt2->video;
572 v1.i_chroma = vlc_fourcc_GetCodec( p_fmt1->i_cat, p_fmt1->i_codec );
574 v2.i_chroma = vlc_fourcc_GetCodec( p_fmt2->i_cat, p_fmt2->i_codec );
575 return video_format_IsSimilar( &p_fmt1->video, &p_fmt2->video );