1 /*****************************************************************************
2 * adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
7 * Authors: Simon Latapie <garf@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 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 General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
35 #include "filter_common.h"
38 # define M_PI 3.14159265358979323846
41 #define eight_times( x ) x x x x x x x x
43 /*****************************************************************************
45 *****************************************************************************/
46 static int Create ( vlc_object_t * );
47 static void Destroy ( vlc_object_t * );
49 static int Init ( vout_thread_t * );
50 static void End ( vout_thread_t * );
51 static void Render ( vout_thread_t *, picture_t * );
53 static int SendEvents( vlc_object_t *, char const *,
54 vlc_value_t, vlc_value_t, void * );
56 /*****************************************************************************
58 *****************************************************************************/
60 #define THRES_TEXT N_("Enable brightness threshold")
61 #define THRES_LONGTEXT N_("Show black and white pixels with brightness as threshold value")
62 #define CONT_TEXT N_("Image contrast (0-2)")
63 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1")
64 #define HUE_TEXT N_("Image hue (0-360)")
65 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0")
66 #define SAT_TEXT N_("Image saturation (0-3)")
67 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1")
68 #define LUM_TEXT N_("Image brightness (0-2)")
69 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1")
70 #define GAMMA_TEXT N_("Image gamma (0-10)")
71 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1")
75 set_description( _("Image properties filter") );
76 set_shortname( N_("Image adjust" ));
77 set_category( CAT_VIDEO );
78 set_subcategory( SUBCAT_VIDEO_VFILTER );
79 set_capability( "video filter", 0 );
81 add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL,
82 CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
83 add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
84 LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
85 add_integer_with_range( "hue", 0, 0, 360, NULL,
86 HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
87 add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
88 SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
89 add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
90 GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
92 add_bool( "brightness-threshold", 0, NULL,
93 THRES_TEXT, THRES_LONGTEXT, VLC_FALSE );
95 add_shortcut( "adjust" );
96 set_callbacks( Create, Destroy );
99 /*****************************************************************************
100 * vout_sys_t: adjust video output method descriptor
101 *****************************************************************************
102 * This structure is part of the video output thread descriptor.
103 * It describes the adjust specific properties of an output thread.
104 *****************************************************************************/
107 vout_thread_t *p_vout;
110 inline static int32_t clip( int32_t a )
112 return (a > 255) ? 255 : (a < 0) ? 0 : a;
115 /*****************************************************************************
116 * Control: control facility for the vout (forwards to child vout)
117 *****************************************************************************/
118 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
120 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
123 /*****************************************************************************
124 * Create: allocates adjust video thread output method
125 *****************************************************************************
126 * This function allocates and initializes a adjust vout method.
127 *****************************************************************************/
128 static int Create( vlc_object_t *p_this )
130 vout_thread_t *p_vout = (vout_thread_t *)p_this;
132 /* Allocate structure */
133 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
134 if( p_vout->p_sys == NULL )
136 msg_Err( p_vout, "out of memory" );
140 p_vout->pf_init = Init;
141 p_vout->pf_end = End;
142 p_vout->pf_manage = NULL;
143 p_vout->pf_render = Render;
144 p_vout->pf_display = NULL;
145 p_vout->pf_control = Control;
147 var_Create( p_vout, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
148 var_Create( p_vout, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
149 var_Create( p_vout, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
150 var_Create( p_vout, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
151 var_Create( p_vout, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
152 var_Create( p_vout, "brightness-threshold",
153 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
158 /*****************************************************************************
159 * Init: initialize adjust video thread output method
160 *****************************************************************************/
161 static int Init( vout_thread_t *p_vout )
165 video_format_t fmt = {0};
167 I_OUTPUTPICTURES = 0;
169 /* Initialize the output structure */
170 p_vout->output.i_chroma = p_vout->render.i_chroma;
171 p_vout->output.i_width = p_vout->render.i_width;
172 p_vout->output.i_height = p_vout->render.i_height;
173 p_vout->output.i_aspect = p_vout->render.i_aspect;
175 fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
176 fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
177 fmt.i_x_offset = fmt.i_y_offset = 0;
178 fmt.i_chroma = p_vout->render.i_chroma;
179 fmt.i_aspect = p_vout->render.i_aspect;
180 fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
181 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
183 /* Try to open the real video output */
184 msg_Dbg( p_vout, "spawning the real video output" );
186 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
188 /* Everything failed */
189 if( p_vout->p_sys->p_vout == NULL )
191 msg_Err( p_vout, "can't open vout, aborting" );
195 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
197 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
199 ADD_PARENT_CALLBACKS( SendEventsToChild );
204 /*****************************************************************************
205 * End: terminate adjust video thread output method
206 *****************************************************************************/
207 static void End( vout_thread_t *p_vout )
211 /* Free the fake output buffers we allocated */
212 for( i_index = I_OUTPUTPICTURES ; i_index ; )
215 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
219 /*****************************************************************************
220 * Destroy: destroy adjust video thread output method
221 *****************************************************************************
222 * Terminate an output method created by adjustCreateOutputMethod
223 *****************************************************************************/
224 static void Destroy( vlc_object_t *p_this )
226 vout_thread_t *p_vout = (vout_thread_t *)p_this;
228 if( p_vout->p_sys->p_vout )
230 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
231 vlc_object_detach( p_vout->p_sys->p_vout );
232 vout_Destroy( p_vout->p_sys->p_vout );
235 DEL_PARENT_CALLBACKS( SendEventsToChild );
237 free( p_vout->p_sys );
240 /*****************************************************************************
241 * Render: displays previously rendered output
242 *****************************************************************************
243 * This function send the currently rendered image to adjust modified image,
244 * waits until it is displayed and switch the two rendering buffers, preparing
246 *****************************************************************************/
247 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
253 uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
254 uint8_t *p_out, *p_out_v;
259 int32_t i_cont, i_lum;
260 int i_sat, i_sin, i_cos, i_x, i_y;
264 /* This is a new frame. Get a structure from the video_output. */
265 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
268 if( p_vout->b_die || p_vout->b_error )
272 msleep( VOUT_OUTMEM_SLEEP );
275 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
276 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
279 var_Get( p_vout, "contrast", &val );
280 i_cont = (int) ( val.f_float * 255 );
281 var_Get( p_vout, "brightness", &val );
282 i_lum = (int) (( val.f_float - 1.0 ) * 255 );
283 var_Get( p_vout, "hue", &val );
284 f_hue = (float) ( val.i_int * M_PI / 180 );
285 var_Get( p_vout, "saturation", &val );
286 i_sat = (int) (val.f_float * 256 );
287 var_Get( p_vout, "gamma", &val );
288 f_gamma = 1.0 / val.f_float;
289 var_Get( p_vout, "brightness-threshold", &val );
290 b_thres = (vlc_bool_t) ( val.b_bool );
293 * Threshold mode drops out everything about luma, contrast and gamma.
295 if( b_thres != VLC_TRUE )
298 /* Contrast is a fast but kludged function, so I put this gap to be
300 i_lum += 128 - i_cont / 2;
302 /* Fill the gamma lookup table */
303 for( i = 0 ; i < 256 ; i++ )
305 pi_gamma[ i ] = clip( pow(i / 255.0, f_gamma) * 255.0);
308 /* Fill the luma lookup table */
309 for( i = 0 ; i < 256 ; i++ )
311 pi_luma[ i ] = pi_gamma[clip( i_lum + i_cont * i / 256)];
317 * We get luma as threshold value: the higher it is, the darker is
318 * the image. Should I reverse this?
320 for( i = 0 ; i < 256 ; i++ )
322 pi_luma[ i ] = (i < i_lum) ? 0 : 255;
326 * Desaturates image to avoid that strange yellow halo...
335 p_in = p_pic->p[0].p_pixels;
336 p_in_end = p_in + p_pic->p[0].i_visible_lines * p_pic->p[0].i_pitch - 8;
338 p_out = p_outpic->p[0].p_pixels;
340 for( ; p_in < p_in_end ; )
342 p_line_end = p_in + p_pic->p[0].i_visible_pitch - 8;
344 for( ; p_in < p_line_end ; )
346 /* Do 8 pixels at a time */
347 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
348 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
349 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
350 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
355 for( ; p_in < p_line_end ; )
357 *p_out++ = pi_luma[ *p_in++ ];
360 p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
361 p_out += p_outpic->p[0].i_pitch - p_outpic->p[0].i_visible_pitch;
365 * Do the U and V planes
368 p_in = p_pic->p[1].p_pixels;
369 p_in_v = p_pic->p[2].p_pixels;
370 p_in_end = p_in + p_pic->p[1].i_visible_lines * p_pic->p[1].i_pitch - 8;
372 p_out = p_outpic->p[1].p_pixels;
373 p_out_v = p_outpic->p[2].p_pixels;
375 i_sin = sin(f_hue) * 256;
376 i_cos = cos(f_hue) * 256;
378 i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
379 i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
383 #define WRITE_UV_CLIP() \
384 i_u = *p_in++ ; i_v = *p_in_v++ ; \
385 *p_out++ = clip( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
386 * i_sat) >> 8) + 128); \
387 *p_out_v++ = clip( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
388 * i_sat) >> 8) + 128)
392 for( ; p_in < p_in_end ; )
394 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
396 for( ; p_in < p_line_end ; )
398 /* Do 8 pixels at a time */
399 WRITE_UV_CLIP(); WRITE_UV_CLIP();
400 WRITE_UV_CLIP(); WRITE_UV_CLIP();
401 WRITE_UV_CLIP(); WRITE_UV_CLIP();
402 WRITE_UV_CLIP(); WRITE_UV_CLIP();
407 for( ; p_in < p_line_end ; )
412 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
413 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
414 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
415 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
421 i_u = *p_in++ ; i_v = *p_in_v++ ; \
422 *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
423 * i_sat) >> 8) + 128; \
424 *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
429 for( ; p_in < p_in_end ; )
431 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
433 for( ; p_in < p_line_end ; )
435 /* Do 8 pixels at a time */
436 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
437 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
442 for( ; p_in < p_line_end ; )
447 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
448 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
449 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
450 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
454 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
456 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
459 /*****************************************************************************
460 * SendEvents: forward mouse and keyboard events to the parent p_vout
461 *****************************************************************************/
462 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
463 vlc_value_t oldval, vlc_value_t newval, void *p_data )
465 var_Set( (vlc_object_t *)p_data, psz_var, newval );
470 /*****************************************************************************
471 * SendEventsToChild: forward events to the child/children vout
472 *****************************************************************************/
473 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
474 vlc_value_t oldval, vlc_value_t newval, void *p_data )
476 vout_thread_t *p_vout = (vout_thread_t *)p_this;
477 var_Set( p_vout->p_sys->p_vout, psz_var, newval );