1 /*****************************************************************************
2 * adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
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 CONT_TEXT N_("Image contrast (0-2)")
61 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1")
62 #define HUE_TEXT N_("Image hue (0-360)")
63 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0")
64 #define SAT_TEXT N_("Image saturation (0-3)")
65 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1")
66 #define LUM_TEXT N_("Image brightness (0-2)")
67 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1")
68 #define GAMMA_TEXT N_("Image gamma (0-10)")
69 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1")
73 set_description( _("Image properties filter") );
74 set_category( CAT_VIDEO );
75 set_subcategory( SUBCAT_VIDEO_VFILTER );
76 set_capability( "video filter", 0 );
78 add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL, CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
79 add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL, LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
80 add_integer_with_range( "hue", 0, 0, 360, NULL, HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
81 add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL, SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
82 add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL, GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
84 add_shortcut( "adjust" );
85 set_callbacks( Create, Destroy );
88 /*****************************************************************************
89 * vout_sys_t: adjust video output method descriptor
90 *****************************************************************************
91 * This structure is part of the video output thread descriptor.
92 * It describes the adjust specific properties of an output thread.
93 *****************************************************************************/
96 vout_thread_t *p_vout;
99 inline static int32_t clip( int32_t a )
101 return (a > 255) ? 255 : (a < 0) ? 0 : a;
104 /*****************************************************************************
105 * Control: control facility for the vout (forwards to child vout)
106 *****************************************************************************/
107 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
109 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
112 /*****************************************************************************
113 * Create: allocates adjust video thread output method
114 *****************************************************************************
115 * This function allocates and initializes a adjust vout method.
116 *****************************************************************************/
117 static int Create( vlc_object_t *p_this )
119 vout_thread_t *p_vout = (vout_thread_t *)p_this;
121 /* Allocate structure */
122 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
123 if( p_vout->p_sys == NULL )
125 msg_Err( p_vout, "out of memory" );
129 p_vout->pf_init = Init;
130 p_vout->pf_end = End;
131 p_vout->pf_manage = NULL;
132 p_vout->pf_render = Render;
133 p_vout->pf_display = NULL;
134 p_vout->pf_control = Control;
136 var_Create( p_vout, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
137 var_Create( p_vout, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
138 var_Create( p_vout, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
139 var_Create( p_vout, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
140 var_Create( p_vout, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
145 /*****************************************************************************
146 * Init: initialize adjust video thread output method
147 *****************************************************************************/
148 static int Init( vout_thread_t *p_vout )
153 I_OUTPUTPICTURES = 0;
155 /* Initialize the output structure */
156 p_vout->output.i_chroma = p_vout->render.i_chroma;
157 p_vout->output.i_width = p_vout->render.i_width;
158 p_vout->output.i_height = p_vout->render.i_height;
159 p_vout->output.i_aspect = p_vout->render.i_aspect;
161 /* Try to open the real video output */
162 msg_Dbg( p_vout, "spawning the real video output" );
164 p_vout->p_sys->p_vout = vout_Create( p_vout,
165 p_vout->render.i_width, p_vout->render.i_height,
166 p_vout->render.i_chroma, p_vout->render.i_aspect );
168 /* Everything failed */
169 if( p_vout->p_sys->p_vout == NULL )
171 msg_Err( p_vout, "can't open vout, aborting" );
176 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
178 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
180 ADD_PARENT_CALLBACKS( SendEventsToChild );
185 /*****************************************************************************
186 * End: terminate adjust video thread output method
187 *****************************************************************************/
188 static void End( vout_thread_t *p_vout )
192 /* Free the fake output buffers we allocated */
193 for( i_index = I_OUTPUTPICTURES ; i_index ; )
196 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
200 /*****************************************************************************
201 * Destroy: destroy adjust video thread output method
202 *****************************************************************************
203 * Terminate an output method created by adjustCreateOutputMethod
204 *****************************************************************************/
205 static void Destroy( vlc_object_t *p_this )
207 vout_thread_t *p_vout = (vout_thread_t *)p_this;
209 if( p_vout->p_sys->p_vout )
211 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
212 vlc_object_detach( p_vout->p_sys->p_vout );
213 vout_Destroy( p_vout->p_sys->p_vout );
216 DEL_PARENT_CALLBACKS( SendEventsToChild );
218 free( p_vout->p_sys );
221 /*****************************************************************************
222 * Render: displays previously rendered output
223 *****************************************************************************
224 * This function send the currently rendered image to adjust modified image,
225 * waits until it is displayed and switch the two rendering buffers, preparing
227 *****************************************************************************/
228 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
234 uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
235 uint8_t *p_out, *p_out_v;
239 int32_t i_cont, i_lum;
240 int i_sat, i_sin, i_cos, i_x, i_y;
244 /* This is a new frame. Get a structure from the video_output. */
245 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
248 if( p_vout->b_die || p_vout->b_error )
252 msleep( VOUT_OUTMEM_SLEEP );
255 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
256 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
259 var_Get( p_vout, "contrast", &val );
260 i_cont = (int) ( val.f_float * 255 );
261 var_Get( p_vout, "brightness", &val );
262 i_lum = (int) (( val.f_float - 1.0 ) * 255 );
263 var_Get( p_vout, "hue", &val );
264 f_hue = (float) ( val.i_int * M_PI / 180 );
265 var_Get( p_vout, "saturation", &val );
266 i_sat = (int) (val.f_float * 256 );
267 var_Get( p_vout, "gamma", &val );
268 f_gamma = 1.0 / val.f_float;
270 /* Contrast is a fast but kludged function, so I put this gap to be
272 i_lum += 128 - i_cont / 2;
274 /* Fill the gamma lookup table */
275 for( i = 0 ; i < 256 ; i++ )
277 pi_gamma[ i ] = clip( pow(i / 255.0, f_gamma) * 255.0);
280 /* Fill the luma lookup table */
281 for( i = 0 ; i < 256 ; i++ )
283 pi_luma[ i ] = pi_gamma[clip( i_lum + i_cont * i / 256)];
290 p_in = p_pic->p[0].p_pixels;
291 p_in_end = p_in + p_pic->p[0].i_visible_lines * p_pic->p[0].i_pitch - 8;
293 p_out = p_outpic->p[0].p_pixels;
295 for( ; p_in < p_in_end ; )
297 p_line_end = p_in + p_pic->p[0].i_visible_pitch - 8;
299 for( ; p_in < p_line_end ; )
301 /* Do 8 pixels at a time */
302 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
303 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
304 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
305 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
310 for( ; p_in < p_line_end ; )
312 *p_out++ = pi_luma[ *p_in++ ];
315 p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
316 p_out += p_outpic->p[0].i_pitch - p_outpic->p[0].i_visible_pitch;
320 * Do the U and V planes
323 p_in = p_pic->p[1].p_pixels;
324 p_in_v = p_pic->p[2].p_pixels;
325 p_in_end = p_in + p_pic->p[1].i_visible_lines * p_pic->p[1].i_pitch - 8;
327 p_out = p_outpic->p[1].p_pixels;
328 p_out_v = p_outpic->p[2].p_pixels;
330 i_sin = sin(f_hue) * 256;
331 i_cos = cos(f_hue) * 256;
333 i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
334 i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
338 #define WRITE_UV_CLIP() \
339 i_u = *p_in++ ; i_v = *p_in_v++ ; \
340 *p_out++ = clip( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
341 * i_sat) >> 8) + 128); \
342 *p_out_v++ = clip( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
343 * i_sat) >> 8) + 128)
347 for( ; p_in < p_in_end ; )
349 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
351 for( ; p_in < p_line_end ; )
353 /* Do 8 pixels at a time */
354 WRITE_UV_CLIP(); WRITE_UV_CLIP();
355 WRITE_UV_CLIP(); WRITE_UV_CLIP();
356 WRITE_UV_CLIP(); WRITE_UV_CLIP();
357 WRITE_UV_CLIP(); WRITE_UV_CLIP();
362 for( ; p_in < p_line_end ; )
367 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
368 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
369 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
370 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
376 i_u = *p_in++ ; i_v = *p_in_v++ ; \
377 *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
378 * i_sat) >> 8) + 128; \
379 *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
384 for( ; p_in < p_in_end ; )
386 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
388 for( ; p_in < p_line_end ; )
390 /* Do 8 pixels at a time */
391 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
392 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
397 for( ; p_in < p_line_end ; )
402 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
403 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
404 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
405 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
409 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
411 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
414 /*****************************************************************************
415 * SendEvents: forward mouse and keyboard events to the parent p_vout
416 *****************************************************************************/
417 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
418 vlc_value_t oldval, vlc_value_t newval, void *p_data )
420 var_Set( (vlc_object_t *)p_data, psz_var, newval );
425 /*****************************************************************************
426 * SendEventsToChild: forward events to the child/children vout
427 *****************************************************************************/
428 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
429 vlc_value_t oldval, vlc_value_t newval, void *p_data )
431 vout_thread_t *p_vout = (vout_thread_t *)p_this;
432 var_Set( p_vout->p_sys->p_vout, psz_var, newval );