1 /*****************************************************************************
2 * format.c : PCM format converter
3 *****************************************************************************
4 * Copyright (C) 2002-2005 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * 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 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
36 #include <vlc_block.h>
37 #include "vlc_filter.h"
39 #ifdef WORDS_BIGENDIAN
40 # define AOUT_FMT_S24_IE VLC_FOURCC('s','2','4','l')
41 # define AOUT_FMT_S16_IE VLC_FOURCC('s','1','6','l')
42 # define AOUT_FMT_U16_IE VLC_FOURCC('u','1','6','l')
44 # define AOUT_FMT_S24_IE VLC_FOURCC('s','2','4','b')
45 # define AOUT_FMT_S16_IE VLC_FOURCC('s','1','6','b')
46 # define AOUT_FMT_U16_IE VLC_FOURCC('u','1','6','b')
50 /*****************************************************************************
52 *****************************************************************************/
53 static int Open ( vlc_object_t * );
55 static block_t *Float32toS24( filter_t *, block_t * );
56 static block_t *Float32toS16( filter_t *, block_t * );
57 static block_t *Float32toU16( filter_t *, block_t * );
58 static block_t *Float32toS8 ( filter_t *, block_t * );
59 static block_t *Float32toU8 ( filter_t *, block_t * );
61 static block_t *S24toFloat32 ( filter_t *, block_t * );
62 static block_t *S24toS16 ( filter_t *, block_t * );
63 static block_t *S24toS16Invert( filter_t *, block_t * );
65 static block_t *S16toFloat32 ( filter_t *, block_t * );
66 static block_t *S16toS24 ( filter_t *, block_t * );
67 static block_t *S16toS24Invert( filter_t *, block_t * );
68 static block_t *S16toS8 ( filter_t *, block_t * );
69 static block_t *S16toU8 ( filter_t *, block_t * );
70 static block_t *S16toU16 ( filter_t *, block_t * );
72 static block_t *U16toFloat32( filter_t *, block_t * );
73 static block_t *U16toS8 ( filter_t *, block_t * );
74 static block_t *U16toU8 ( filter_t *, block_t * );
75 static block_t *U16toS16 ( filter_t *, block_t * );
77 static block_t *Float32toS24Invert( filter_t *, block_t * );
78 static block_t *Float32toS16Invert( filter_t *, block_t * );
79 static block_t *Float32toU16Invert( filter_t *, block_t * );
81 static block_t *S24InverttoFloat32 ( filter_t *, block_t * );
82 static block_t *S24InverttoS16 ( filter_t *, block_t * );
83 static block_t *S24InverttoS16Invert( filter_t *, block_t * );
85 static block_t *S16InverttoFloat32 ( filter_t *, block_t * );
86 static block_t *S16InverttoS24 ( filter_t *, block_t * );
87 static block_t *S16InverttoS24Invert( filter_t *, block_t * );
88 static block_t *S16InverttoS8 ( filter_t *, block_t * );
89 static block_t *S16InverttoU8 ( filter_t *, block_t * );
90 static block_t *S16InverttoU16 ( filter_t *, block_t * );
92 static block_t *U16InverttoFloat32( filter_t *, block_t * );
93 static block_t *U16InverttoS8 ( filter_t *, block_t * );
94 static block_t *U16InverttoU8 ( filter_t *, block_t * );
95 static block_t *U16InverttoS16 ( filter_t *, block_t * );
97 static block_t *S8toFloat32 ( filter_t *, block_t * );
98 static block_t *S8toS16 ( filter_t *, block_t * );
99 static block_t *S8toU16 ( filter_t *, block_t * );
100 static block_t *S8toU8 ( filter_t *, block_t * );
101 static block_t *S8toS16Invert( filter_t *, block_t * );
102 static block_t *S8toU16Invert( filter_t *, block_t * );
104 static block_t *U8toFloat32 ( filter_t *, block_t * );
105 static block_t *U8toFloat32 ( filter_t *, block_t * );
106 static block_t *U8toS16 ( filter_t *, block_t * );
107 static block_t *U8toU16 ( filter_t *, block_t * );
108 static block_t *U8toS8 ( filter_t *, block_t * );
109 static block_t *U8toS16Invert( filter_t *, block_t * );
110 static block_t *U8toU16Invert( filter_t *, block_t * );
113 static block_t *U8toS8( filter_t *, block_t * );
114 static block_t *S8toU8( filter_t *, block_t * );
117 static block_t *Swap16( filter_t *, block_t * );
118 static block_t *Swap24( filter_t *, block_t * );
124 block_t *(*pf_convert)( filter_t *, block_t *);
128 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_S24_NE, Float32toS24 },
129 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_S16_NE, Float32toS16 },
130 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_U16_NE, Float32toU16 },
131 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_S24_IE, Float32toS24Invert },
132 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_S16_IE, Float32toS16Invert },
133 { VLC_FOURCC('f','l','3','2'), AOUT_FMT_U16_IE, Float32toU16Invert },
134 { VLC_FOURCC('f','l','3','2'), VLC_FOURCC('s','8',' ',' '), Float32toS8 },
135 { VLC_FOURCC('f','l','3','2'), VLC_FOURCC('u','8',' ',' '), Float32toU8 },
137 /* From s24 invert */
138 { AOUT_FMT_S24_NE, VLC_FOURCC('f','l','3','2'), S24toFloat32 },
139 { AOUT_FMT_S24_NE, AOUT_FMT_S24_IE, Swap24 },
140 { AOUT_FMT_S24_NE, AOUT_FMT_S16_NE, S24toS16 },
141 { AOUT_FMT_S24_NE, AOUT_FMT_S16_IE, S24toS16Invert },
144 { AOUT_FMT_S16_NE, VLC_FOURCC('f','l','3','2'), S16toFloat32 },
145 { AOUT_FMT_S16_NE, AOUT_FMT_S24_NE, S16toS24 },
146 { AOUT_FMT_S16_NE, AOUT_FMT_S24_IE, S16toS24Invert },
147 { AOUT_FMT_S16_NE, AOUT_FMT_S16_IE, Swap16 },
148 { AOUT_FMT_S16_NE, AOUT_FMT_U16_IE, S16toU16 },
149 { AOUT_FMT_S16_NE, VLC_FOURCC('s','8',' ',' '), S16toS8 },
150 { AOUT_FMT_S16_NE, VLC_FOURCC('u','8',' ',' '), S16toU8 },
153 { AOUT_FMT_U16_NE, VLC_FOURCC('f','l','3','2'), U16toFloat32 },
154 { AOUT_FMT_U16_NE, AOUT_FMT_U16_IE, Swap16 },
155 { AOUT_FMT_U16_NE, AOUT_FMT_S16_IE, U16toS16 },
156 { AOUT_FMT_U16_NE, VLC_FOURCC('s','8',' ',' '), U16toS8 },
157 { AOUT_FMT_U16_NE, VLC_FOURCC('u','8',' ',' '), U16toU8 },
160 { VLC_FOURCC('s','8',' ',' '), VLC_FOURCC('f','l','3','2'), S8toFloat32 },
161 { VLC_FOURCC('s','8',' ',' '), AOUT_FMT_S16_NE, S8toS16 },
162 { VLC_FOURCC('s','8',' ',' '), AOUT_FMT_S16_IE, S8toS16Invert },
163 { VLC_FOURCC('s','8',' ',' '), AOUT_FMT_U16_NE, S8toU16 },
164 { VLC_FOURCC('s','8',' ',' '), AOUT_FMT_U16_IE, S8toU16Invert },
165 { VLC_FOURCC('s','8',' ',' '), VLC_FOURCC('u','8',' ',' '), S8toU8 },
168 { VLC_FOURCC('u','8',' ',' '), VLC_FOURCC('f','l','3','2'), U8toFloat32 },
169 { VLC_FOURCC('u','8',' ',' '), AOUT_FMT_S16_NE, U8toS16 },
170 { VLC_FOURCC('u','8',' ',' '), AOUT_FMT_S16_IE, U8toS16Invert },
171 { VLC_FOURCC('u','8',' ',' '), AOUT_FMT_U16_NE, U8toU16 },
172 { VLC_FOURCC('u','8',' ',' '), AOUT_FMT_U16_IE, U8toU16Invert },
173 { VLC_FOURCC('u','8',' ',' '), VLC_FOURCC('s','8',' ',' '), U8toS8 },
175 /* From s24 invert */
176 { AOUT_FMT_S24_IE, VLC_FOURCC('f','l','3','2'), S24InverttoFloat32 },
177 { AOUT_FMT_S24_IE, AOUT_FMT_S24_NE, Swap24 },
178 { AOUT_FMT_S24_IE, AOUT_FMT_S16_NE, S24InverttoS16 },
179 { AOUT_FMT_S24_IE, AOUT_FMT_S16_IE, S24InverttoS16Invert },
181 /* From s16 invert */
182 { AOUT_FMT_S16_IE, VLC_FOURCC('f','l','3','2'), S16InverttoFloat32 },
183 { AOUT_FMT_S16_IE, AOUT_FMT_S24_NE, S16InverttoS24 },
184 { AOUT_FMT_S16_IE, AOUT_FMT_S24_IE, S16InverttoS24Invert },
185 { AOUT_FMT_S16_IE, AOUT_FMT_S16_NE, Swap16 },
186 { AOUT_FMT_S16_IE, AOUT_FMT_U16_NE, S16InverttoU16 },
187 { AOUT_FMT_S16_IE, VLC_FOURCC('s','8',' ',' '), S16InverttoS8 },
188 { AOUT_FMT_S16_IE, VLC_FOURCC('u','8',' ',' '), S16InverttoU8 },
190 /* From u16 invert */
191 { AOUT_FMT_U16_IE, VLC_FOURCC('f','l','3','2'), U16InverttoFloat32 },
192 { AOUT_FMT_U16_IE, AOUT_FMT_U16_NE, Swap16 },
193 { AOUT_FMT_U16_IE, AOUT_FMT_S16_NE, U16InverttoS16 },
194 { AOUT_FMT_U16_IE, VLC_FOURCC('s','8',' ',' '), U16InverttoS8 },
195 { AOUT_FMT_U16_IE, VLC_FOURCC('u','8',' ',' '), U16InverttoU8 },
201 /*****************************************************************************
203 *****************************************************************************/
205 set_description( N_("Audio filter for PCM format conversion") );
206 set_category( CAT_AUDIO );
207 set_subcategory( SUBCAT_AUDIO_MISC );
208 set_capability( "audio filter2", 1 );
209 set_callbacks( Open, NULL );
212 /*****************************************************************************
214 *****************************************************************************/
215 static int Open( vlc_object_t *p_this )
217 filter_t *p_filter = (filter_t *)p_this;
220 for( i = 0; ConvertTable[i].pf_convert != NULL; i++ )
222 if( ConvertTable[i].i_src == p_filter->fmt_in.i_codec &&
223 ConvertTable[i].i_dst == p_filter->fmt_out.i_codec )
226 if( ConvertTable[i].pf_convert == NULL )
229 p_filter->pf_audio_filter = ConvertTable[i].pf_convert;
230 p_filter->fmt_out.audio = p_filter->fmt_in.audio;
231 p_filter->fmt_out.audio.i_format = p_filter->fmt_out.i_codec;
233 msg_Dbg( p_this, "%4.4s->%4.4s, bits per sample: %i",
234 (char *)&p_filter->fmt_in.i_codec,
235 (char *)&p_filter->fmt_out.i_codec,
236 p_filter->fmt_in.audio.i_bitspersample );
241 /*****************************************************************************
243 *****************************************************************************/
244 static block_t *Float32toS24( filter_t *p_filter, block_t *p_block )
246 VLC_UNUSED(p_filter);
248 float *p_in = (float *)p_block->p_buffer;
249 uint8_t *p_out = (uint8_t *)p_in;
252 for( i = p_block->i_buffer / 4; i--; )
254 if ( *p_in >= 1.0 ) out = 8388607;
255 else if ( *p_in < -1.0 ) out = -8388608;
256 else out = *p_in * 8388608.0;
258 #ifdef WORDS_BIGENDIAN
259 *((int16_t *)p_out) = out >> 8;
260 p_out[2] = out & 0xFF;
262 *((int16_t *)(p_out+1)) = out >> 8;
263 p_out[0] = out & 0xFF;
269 p_block->i_buffer = p_block->i_buffer * 3 / 4;
273 static block_t *Float32toS16( filter_t *p_filter, block_t *p_block )
275 VLC_UNUSED(p_filter);
277 float *p_in = (float *)p_block->p_buffer;
278 int16_t *p_out = (int16_t *)p_in;
280 for( i = p_block->i_buffer / 4; i--; )
284 if ( *p_in >= 1.0 ) *p_out = 32767;
285 else if ( *p_in < -1.0 ) *p_out = -32768;
286 else *p_out = *p_in * 32768.0;
288 /* This is walken's trick based on IEEE float format. */
289 union { float f; int32_t i; } u;
291 if ( u.i > 0x43c07fff ) *p_out = 32767;
292 else if ( u.i < 0x43bf8000 ) *p_out = -32768;
293 else *p_out = u.i - 0x43c00000;
298 p_block->i_buffer /= 2;
302 static block_t *Float32toU16( filter_t *p_filter, block_t *p_block )
304 VLC_UNUSED(p_filter);
306 float *p_in = (float *)p_block->p_buffer;
307 uint16_t *p_out = (uint16_t *)p_in;
309 for( i = p_block->i_buffer / 4; i--; )
311 if ( *p_in >= 1.0 ) *p_out = 65535;
312 else if ( *p_in < -1.0 ) *p_out = 0;
313 else *p_out = (uint16_t)(32768 + *p_in * 32768);
317 p_block->i_buffer /= 2;
321 static block_t *S24toFloat32( filter_t *p_filter, block_t *p_block )
323 block_t *p_block_out;
329 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer * 4 / 3 );
332 msg_Warn( p_filter, "can't get output buffer" );
336 p_in = p_block->p_buffer;
337 p_out = (float *)p_block_out->p_buffer;
339 for( i = p_block->i_buffer / 3; i--; )
341 /* FIXME: unaligned reads */
342 #ifdef WORDS_BIGENDIAN
343 *p_out = ((float)( (((int32_t)*(int16_t *)(p_in)) << 8) + p_in[2]))
345 *p_out = ((float)( (((int32_t)*(int16_t *)(p_in+1)) << 8) + p_in[0]))
352 p_block_out->i_samples = p_block->i_samples;
353 p_block_out->i_dts = p_block->i_dts;
354 p_block_out->i_pts = p_block->i_pts;
355 p_block_out->i_length = p_block->i_length;
356 p_block_out->i_rate = p_block->i_rate;
358 block_Release( p_block );
362 static block_t *S24toS16( filter_t *p_filter, block_t *p_block )
364 VLC_UNUSED(p_filter);
366 uint8_t *p_in = (uint8_t *)p_block->p_buffer;
367 uint8_t *p_out = (uint8_t *)p_in;
369 for( i = p_block->i_buffer / 3; i--; )
371 #ifdef WORDS_BIGENDIAN
382 p_block->i_buffer = p_block->i_buffer * 2 / 3;
386 static block_t *S16toFloat32( filter_t *p_filter, block_t *p_block )
388 block_t *p_block_out;
394 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
397 msg_Warn( p_filter, "can't get output buffer" );
401 p_in = (int16_t *)p_block->p_buffer;
402 p_out = (float *)p_block_out->p_buffer;
404 for( i = p_block->i_buffer / 2; i--; )
408 *p_out = (float)*p_in / 32768.0;
410 /* This is walken's trick based on IEEE float format. On my PIII
411 * this takes 16 seconds to perform one billion conversions, instead
412 * of 19 seconds for the above division. */
413 union { float f; int32_t i; } u;
414 u.i = *p_in + 0x43c00000;
415 *p_out = u.f - 384.0;
421 p_block_out->i_samples = p_block->i_samples;
422 p_block_out->i_dts = p_block->i_dts;
423 p_block_out->i_pts = p_block->i_pts;
424 p_block_out->i_length = p_block->i_length;
425 p_block_out->i_rate = p_block->i_rate;
427 block_Release( p_block );
431 static block_t *U16toFloat32( filter_t *p_filter, block_t *p_block )
433 block_t *p_block_out;
439 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
442 msg_Warn( p_filter, "can't get output buffer" );
446 p_in = (uint16_t *)p_block->p_buffer;
447 p_out = (float *)p_block_out->p_buffer;
449 for( i = p_block->i_buffer / 2; i--; )
451 *p_out++ = (float)(*p_in++ - 32768) / 32768.0;
454 p_block_out->i_samples = p_block->i_samples;
455 p_block_out->i_dts = p_block->i_dts;
456 p_block_out->i_pts = p_block->i_pts;
457 p_block_out->i_length = p_block->i_length;
458 p_block_out->i_rate = p_block->i_rate;
460 block_Release( p_block );
464 static block_t *S16toS24( filter_t *p_filter, block_t *p_block )
466 block_t *p_block_out;
467 uint8_t *p_in, *p_out;
471 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*3/2 );
474 msg_Warn( p_filter, "can't get output buffer" );
478 p_in = (uint8_t *)p_block->p_buffer;
479 p_out = (uint8_t *)p_block_out->p_buffer;
481 for( i = p_block->i_buffer / 2; i--; )
483 #ifdef WORDS_BIGENDIAN
494 p_block_out->i_samples = p_block->i_samples;
495 p_block_out->i_dts = p_block->i_dts;
496 p_block_out->i_pts = p_block->i_pts;
497 p_block_out->i_length = p_block->i_length;
498 p_block_out->i_rate = p_block->i_rate;
500 block_Release( p_block );
504 static block_t *S16toS8( filter_t *p_filter, block_t *p_block )
506 VLC_UNUSED(p_filter);
508 int16_t *p_in = (int16_t *)p_block->p_buffer;
509 int8_t *p_out = (int8_t *)p_in;
511 for( i = p_block->i_buffer / 2; i--; )
512 *p_out++ = (*p_in++) >> 8;
514 p_block->i_buffer /= 2;
517 static block_t *S16toU8( filter_t *p_filter, block_t *p_block )
519 VLC_UNUSED(p_filter);
521 int16_t *p_in = (int16_t *)p_block->p_buffer;
522 uint8_t *p_out = (uint8_t *)p_in;
524 for( i = p_block->i_buffer / 2; i--; )
525 *p_out++ = ((*p_in++) + 32768) >> 8;
527 p_block->i_buffer /= 2;
530 static block_t *S16toU16( filter_t *p_filter, block_t *p_block )
532 VLC_UNUSED(p_filter);
534 int16_t *p_in = (int16_t *)p_block->p_buffer;
535 uint16_t *p_out = (uint16_t *)p_in;
537 for( i = p_block->i_buffer / 2; i--; )
538 *p_out++ = (*p_in++) + 32768;
543 static block_t *U16toS8( filter_t *p_filter, block_t *p_block )
545 VLC_UNUSED(p_filter);
547 uint16_t *p_in = (uint16_t *)p_block->p_buffer;
548 int8_t *p_out = (int8_t *)p_in;
550 for( i = p_block->i_buffer / 2; i--; )
551 *p_out++ = ((int)(*p_in++) - 32768) >> 8;
553 p_block->i_buffer /= 2;
556 static block_t *U16toU8( filter_t *p_filter, block_t *p_block )
558 VLC_UNUSED(p_filter);
560 uint16_t *p_in = (uint16_t *)p_block->p_buffer;
561 uint8_t *p_out = (uint8_t *)p_in;
563 for( i = p_block->i_buffer / 2; i--; )
564 *p_out++ = (*p_in++) >> 8;
566 p_block->i_buffer /= 2;
569 static block_t *U16toS16( filter_t *p_filter, block_t *p_block )
571 VLC_UNUSED(p_filter);
573 uint16_t *p_in = (uint16_t *)p_block->p_buffer;
574 int16_t *p_out = (int16_t *)p_in;
576 for( i = p_block->i_buffer / 2; i--; )
577 *p_out++ = (int)(*p_in++) - 32768;
582 static block_t *S8toU8( filter_t *p_filter, block_t *p_block )
584 VLC_UNUSED(p_filter);
586 int8_t *p_in = (int8_t *)p_block->p_buffer;
587 uint8_t *p_out = (uint8_t *)p_in;
589 for( i = p_block->i_buffer; i--; )
590 *p_out++ = ((*p_in++) + 128);
594 static block_t *U8toS8( filter_t *p_filter, block_t *p_block )
596 VLC_UNUSED(p_filter);
598 uint8_t *p_in = (uint8_t *)p_block->p_buffer;
599 int8_t *p_out = (int8_t *)p_in;
601 for( i = p_block->i_buffer; i--; )
602 *p_out++ = ((*p_in++) - 128);
608 static block_t *S8toU16( filter_t *p_filter, block_t *p_block )
610 block_t *p_block_out;
616 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
619 msg_Warn( p_filter, "can't get output buffer" );
623 p_in = (int8_t *)p_block->p_buffer;
624 p_out = (uint16_t *)p_block_out->p_buffer;
626 for( i = p_block->i_buffer; i--; )
627 *p_out++ = ((*p_in++) + 128) << 8;
629 p_block_out->i_samples = p_block->i_samples;
630 p_block_out->i_dts = p_block->i_dts;
631 p_block_out->i_pts = p_block->i_pts;
632 p_block_out->i_length = p_block->i_length;
633 p_block_out->i_rate = p_block->i_rate;
635 block_Release( p_block );
639 static block_t *U8toS16( filter_t *p_filter, block_t *p_block )
641 block_t *p_block_out;
647 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
650 msg_Warn( p_filter, "can't get output buffer" );
654 p_in = (uint8_t *)p_block->p_buffer;
655 p_out = (int16_t *)p_block_out->p_buffer;
657 for( i = p_block->i_buffer; i--; )
658 *p_out++ = ((*p_in++) - 128) << 8;
660 p_block_out->i_samples = p_block->i_samples;
661 p_block_out->i_dts = p_block->i_dts;
662 p_block_out->i_pts = p_block->i_pts;
663 p_block_out->i_length = p_block->i_length;
664 p_block_out->i_rate = p_block->i_rate;
666 block_Release( p_block );
671 static block_t *S8toS16( filter_t *p_filter, block_t *p_block )
673 block_t *p_block_out;
679 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
682 msg_Warn( p_filter, "can't get output buffer" );
686 p_in = (int8_t *)p_block->p_buffer;
687 p_out = (int16_t *)p_block_out->p_buffer;
689 for( i = p_block->i_buffer; i--; )
690 *p_out++ = (*p_in++) << 8;
692 p_block_out->i_samples = p_block->i_samples;
693 p_block_out->i_dts = p_block->i_dts;
694 p_block_out->i_pts = p_block->i_pts;
695 p_block_out->i_length = p_block->i_length;
696 p_block_out->i_rate = p_block->i_rate;
698 block_Release( p_block );
702 static block_t *U8toU16( filter_t *p_filter, block_t *p_block )
704 block_t *p_block_out;
710 p_filter->pf_audio_buffer_new( p_filter, p_block->i_buffer*2 );
713 msg_Warn( p_filter, "can't get output buffer" );
717 p_in = (uint8_t *)p_block->p_buffer;
718 p_out = (uint16_t *)p_block_out->p_buffer;
720 for( i = p_block->i_buffer; i--; )
721 *p_out++ = (*p_in++) << 8;
723 p_block_out->i_samples = p_block->i_samples;
724 p_block_out->i_dts = p_block->i_dts;
725 p_block_out->i_pts = p_block->i_pts;
726 p_block_out->i_length = p_block->i_length;
727 p_block_out->i_rate = p_block->i_rate;
729 block_Release( p_block );
733 /*****************************************************************************
734 * Swap a buffer of words
735 *****************************************************************************/
736 static block_t *Swap16( filter_t *p_filter, block_t *p_block )
738 VLC_UNUSED(p_filter);
740 uint8_t *p_in = (uint8_t *)p_block->p_buffer;
743 for( i = 0; i < p_block->i_buffer / 2; i++ )
754 static block_t *Swap24( filter_t *p_filter, block_t *p_block )
756 VLC_UNUSED(p_filter);
758 uint8_t *p_in = (uint8_t *)p_block->p_buffer;
761 for( i = 0; i < p_block->i_buffer / 3; i++ )
772 #define CONVERT_NN( func, f_in, f_out, b_pre_invert, b_post_invert, swapa, swapb ) \
773 static block_t *func( filter_t *p_filter, block_t *p_block ) \
776 swapa( p_filter, p_block ); \
778 p_block = f_in##to##f_out( p_filter, p_block ); \
780 if( b_post_invert ) \
781 swapb( p_filter, p_block ); \
786 CONVERT_NN( Float32toS24Invert, Float32, S24, 0, 1, Swap24, Swap24 )
787 CONVERT_NN( Float32toS16Invert, Float32, S16, 0, 1, Swap16, Swap16 )
788 CONVERT_NN( Float32toU16Invert, Float32, U16, 0, 1, Swap16, Swap16 )
790 CONVERT_NN( S24InverttoFloat32, S24, Float32, 1, 0, Swap24, Swap24 )
791 CONVERT_NN( S24InverttoS16, S24, S16, 1, 0, Swap24, Swap16 )
792 CONVERT_NN( S24InverttoS16Invert, S24, S16, 1, 1, Swap24, Swap16 )
793 CONVERT_NN( S24toS16Invert, S24, S16, 0, 1, Swap24, Swap16 )
795 CONVERT_NN( S16InverttoFloat32, S16, Float32, 1, 0, Swap16, Swap16 )
796 CONVERT_NN( S16InverttoS24, S16, S24, 1, 0, Swap16, Swap24 )
797 CONVERT_NN( S16toS24Invert, S16, S24, 0, 1, Swap16, Swap24 )
798 CONVERT_NN( S16InverttoS24Invert, S16, S24, 1, 1, Swap16, Swap24 )
799 CONVERT_NN( S16InverttoS8, S16, S8, 1, 0, Swap16, Swap16 )
800 CONVERT_NN( S16InverttoU8, S16, U8, 1, 0, Swap16, Swap16 )
801 CONVERT_NN( S16InverttoU16, S16, U16, 1, 0, Swap16, Swap16 )
803 CONVERT_NN( U16InverttoFloat32, U16, Float32, 1, 0, Swap16, Swap16 )
804 CONVERT_NN( U16InverttoS8, U16, S8, 1, 0, Swap16, Swap16 )
805 CONVERT_NN( U16InverttoU8, U16, U8, 1, 0, Swap16, Swap16 )
806 CONVERT_NN( U16InverttoS16, U16, S16, 1, 0, Swap16, Swap16 )
810 #define CONVERT_INDIRECT( func, f_in, f_mid, f_out ) \
811 static block_t *func( filter_t *p_filter, block_t *p_block ) \
813 return f_mid##to##f_out( p_filter, \
814 f_in##to##f_mid( p_filter, p_block ) ); \
817 CONVERT_INDIRECT( Float32toS8, Float32, S16, U8 )
818 CONVERT_INDIRECT( Float32toU8, Float32, U16, U8 )
819 CONVERT_INDIRECT( S8toFloat32, S8, S16, Float32 )
820 CONVERT_INDIRECT( U8toFloat32, U8, U16, Float32 )
822 #define S16toS16Invert Swap16
823 #define U16toU16Invert Swap16
825 CONVERT_INDIRECT( U8toS16Invert, U8, S16, S16Invert )
826 CONVERT_INDIRECT( S8toU16Invert, S8, U16, U16Invert )
828 CONVERT_INDIRECT( U8toU16Invert, U8, U16, U16Invert )
829 CONVERT_INDIRECT( S8toS16Invert, S8, S16, S16Invert )
831 #undef CONVERT_INDIRECT