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_sar_num, int i_sar_den )
135 p_fmt->i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
137 p_fmt->i_visible_width = i_width;
139 p_fmt->i_visible_height = i_height;
141 p_fmt->i_y_offset = 0;
142 vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
143 i_sar_num, i_sar_den, 0 );
145 switch( p_fmt->i_chroma )
148 p_fmt->i_bits_per_pixel = 32;
152 p_fmt->i_bits_per_pixel = 24;
160 p_fmt->i_bits_per_pixel = 16;
164 p_fmt->i_bits_per_pixel = 16;
170 p_fmt->i_bits_per_pixel = 12;
174 p_fmt->i_bits_per_pixel = 9;
177 p_fmt->i_bits_per_pixel = 8;
180 p_fmt->i_bits_per_pixel = 8;
183 case VLC_CODEC_RGB32:
185 p_fmt->i_bits_per_pixel = 32;
187 case VLC_CODEC_RGB24:
188 p_fmt->i_bits_per_pixel = 24;
190 case VLC_CODEC_RGB15:
191 case VLC_CODEC_RGB16:
192 p_fmt->i_bits_per_pixel = 16;
195 p_fmt->i_bits_per_pixel = 8;
200 p_fmt->i_bits_per_pixel = 8;
204 p_fmt->i_bits_per_pixel = 0;
209 void video_format_CopyCrop( video_format_t *p_dst, const video_format_t *p_src )
211 p_dst->i_x_offset = p_src->i_x_offset;
212 p_dst->i_y_offset = p_src->i_y_offset;
213 p_dst->i_visible_width = p_src->i_visible_width;
214 p_dst->i_visible_height = p_src->i_visible_height;
217 void video_format_ScaleCropAr( video_format_t *p_dst, const video_format_t *p_src )
219 p_dst->i_x_offset = (uint64_t)p_src->i_x_offset * p_dst->i_width / p_src->i_width;
220 p_dst->i_y_offset = (uint64_t)p_src->i_y_offset * p_dst->i_height / p_src->i_height;
221 p_dst->i_visible_width = (uint64_t)p_src->i_visible_width * p_dst->i_width / p_src->i_width;
222 p_dst->i_visible_height = (uint64_t)p_src->i_visible_height * p_dst->i_height / p_src->i_height;
224 p_dst->i_sar_num *= p_src->i_width;
225 p_dst->i_sar_den *= p_dst->i_width;
226 vlc_ureduce(&p_dst->i_sar_num, &p_dst->i_sar_den,
227 p_dst->i_sar_num, p_dst->i_sar_den, 65536);
229 p_dst->i_sar_num *= p_dst->i_height;
230 p_dst->i_sar_den *= p_src->i_height;
231 vlc_ureduce(&p_dst->i_sar_num, &p_dst->i_sar_den,
232 p_dst->i_sar_num, p_dst->i_sar_den, 65536);
235 bool video_format_IsSimilar( const video_format_t *p_fmt1, const video_format_t *p_fmt2 )
237 video_format_t v1 = *p_fmt1;
238 video_format_t v2 = *p_fmt2;
240 if( v1.i_chroma != v2.i_chroma )
243 if( v1.i_width != v2.i_width || v1.i_height != v2.i_height ||
244 v1.i_visible_width != v2.i_visible_width ||
245 v1.i_visible_height != v2.i_visible_height ||
246 v1.i_x_offset != v2.i_x_offset || v1.i_y_offset != v2.i_y_offset )
248 if( v1.i_sar_num * v2.i_sar_den != v2.i_sar_num * v1.i_sar_den )
251 if( v1.i_chroma == VLC_CODEC_RGB15 ||
252 v1.i_chroma == VLC_CODEC_RGB16 ||
253 v1.i_chroma == VLC_CODEC_RGB24 ||
254 v1.i_chroma == VLC_CODEC_RGB32 )
256 video_format_FixRgb( &v1 );
257 video_format_FixRgb( &v2 );
259 if( v1.i_rmask != v2.i_rmask ||
260 v1.i_gmask != v2.i_gmask ||
261 v1.i_bmask != v2.i_bmask )
266 void video_format_Print( vlc_object_t *p_this,
267 const char *psz_text, const video_format_t *fmt )
270 "%s sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, sar %i:%i, msk r0x%x g0x%x b0x%x",
272 fmt->i_width, fmt->i_height, fmt->i_x_offset, fmt->i_y_offset,
273 fmt->i_visible_width, fmt->i_visible_height,
274 (char*)&fmt->i_chroma,
275 fmt->i_sar_num, fmt->i_sar_den,
276 fmt->i_rmask, fmt->i_gmask, fmt->i_bmask );
279 void es_format_Init( es_format_t *fmt,
280 int i_cat, vlc_fourcc_t i_codec )
283 fmt->i_codec = i_codec;
284 fmt->i_original_fourcc = 0;
290 fmt->psz_language = NULL;
291 fmt->psz_description = NULL;
293 fmt->i_extra_languages = 0;
294 fmt->p_extra_languages = NULL;
296 memset( &fmt->audio, 0, sizeof(audio_format_t) );
297 memset( &fmt->audio_replay_gain, 0, sizeof(audio_replay_gain_t) );
298 memset( &fmt->video, 0, sizeof(video_format_t) );
299 memset( &fmt->subs, 0, sizeof(subs_format_t) );
301 fmt->b_packetized = true;
307 void es_format_InitFromVideo( es_format_t *p_es, const video_format_t *p_fmt )
309 es_format_Init( p_es, VIDEO_ES, p_fmt->i_chroma );
310 video_format_Copy( &p_es->video, p_fmt );
313 int es_format_Copy( es_format_t *dst, const es_format_t *src )
316 memcpy( dst, src, sizeof( es_format_t ) );
317 dst->psz_language = src->psz_language ? strdup( src->psz_language ) : NULL;
318 dst->psz_description = src->psz_description ? strdup( src->psz_description ) : NULL;
319 if( src->i_extra > 0 && dst->p_extra )
321 dst->i_extra = src->i_extra;
322 dst->p_extra = malloc( src->i_extra );
324 memcpy( dst->p_extra, src->p_extra, src->i_extra );
334 dst->subs.psz_encoding = dst->subs.psz_encoding ? strdup( src->subs.psz_encoding ) : NULL;
336 if( src->video.p_palette )
338 dst->video.p_palette =
339 (video_palette_t*)malloc( sizeof( video_palette_t ) );
340 if(dst->video.p_palette)
342 memcpy( dst->video.p_palette, src->video.p_palette,
343 sizeof( video_palette_t ) );
347 if( dst->i_extra_languages && src->p_extra_languages)
349 dst->i_extra_languages = src->i_extra_languages;
350 dst->p_extra_languages = (extra_languages_t*)
351 malloc(dst->i_extra_languages * sizeof(*dst->p_extra_languages ));
352 if( dst->p_extra_languages )
354 for( i = 0; i < dst->i_extra_languages; i++ ) {
355 if( src->p_extra_languages[i].psz_language )
356 dst->p_extra_languages[i].psz_language = strdup( src->p_extra_languages[i].psz_language );
358 dst->p_extra_languages[i].psz_language = NULL;
359 if( src->p_extra_languages[i].psz_description )
360 dst->p_extra_languages[i].psz_description = strdup( src->p_extra_languages[i].psz_description );
362 dst->p_extra_languages[i].psz_description = NULL;
366 dst->i_extra_languages = 0;
369 dst->i_extra_languages = 0;
373 void es_format_Clean( es_format_t *fmt )
375 free( fmt->psz_language );
376 free( fmt->psz_description );
378 if( fmt->i_extra > 0 ) free( fmt->p_extra );
380 free( fmt->video.p_palette );
381 free( fmt->subs.psz_encoding );
383 if( fmt->i_extra_languages > 0 && fmt->p_extra_languages )
386 for( i = 0; i < fmt->i_extra_languages; i++ )
388 free( fmt->p_extra_languages[i].psz_language );
389 free( fmt->p_extra_languages[i].psz_description );
391 free( fmt->p_extra_languages );
394 /* es_format_Clean can be called multiple times */
395 memset( fmt, 0, sizeof(*fmt) );
398 bool es_format_IsSimilar( const es_format_t *p_fmt1, const es_format_t *p_fmt2 )
400 if( p_fmt1->i_cat != p_fmt2->i_cat ||
401 vlc_fourcc_GetCodec( p_fmt1->i_cat, p_fmt1->i_codec ) !=
402 vlc_fourcc_GetCodec( p_fmt2->i_cat, p_fmt2->i_codec ) )
405 switch( p_fmt1->i_cat )
409 audio_format_t a1 = p_fmt1->audio;
410 audio_format_t a2 = p_fmt2->audio;
412 if( a1.i_format && a2.i_format && a1.i_format != a2.i_format )
414 if( a1.i_rate != a2.i_rate ||
415 a1.i_physical_channels != a2.i_physical_channels ||
416 a1.i_original_channels != a2.i_original_channels )
423 video_format_t v1 = p_fmt1->video;
424 video_format_t v2 = p_fmt2->video;
426 v1.i_chroma = vlc_fourcc_GetCodec( p_fmt1->i_cat, p_fmt1->i_codec );
428 v2.i_chroma = vlc_fourcc_GetCodec( p_fmt1->i_cat, p_fmt2->i_codec );
429 return video_format_IsSimilar( &p_fmt1->video, &p_fmt2->video );