1 /*****************************************************************************
2 * adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
5 * $Id: adjust.c,v 1.17 2004/01/25 20:05:28 hartman Exp $
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_capability( "video filter", 0 );
76 add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL, CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
77 add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL, LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
78 add_integer_with_range( "hue", 0, 0, 360, NULL, HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
79 add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL, SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
80 add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL, GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
82 add_shortcut( "adjust" );
83 set_callbacks( Create, Destroy );
86 /*****************************************************************************
87 * vout_sys_t: adjust video output method descriptor
88 *****************************************************************************
89 * This structure is part of the video output thread descriptor.
90 * It describes the adjust specific properties of an output thread.
91 *****************************************************************************/
94 vout_thread_t *p_vout;
97 inline static int32_t clip( int32_t a )
99 return (a > 255) ? 255 : (a < 0) ? 0 : a;
102 /*****************************************************************************
103 * Create: allocates adjust video thread output method
104 *****************************************************************************
105 * This function allocates and initializes a adjust vout method.
106 *****************************************************************************/
107 static int Create( vlc_object_t *p_this )
109 vout_thread_t *p_vout = (vout_thread_t *)p_this;
111 /* Allocate structure */
112 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
113 if( p_vout->p_sys == NULL )
115 msg_Err( p_vout, "out of memory" );
119 p_vout->pf_init = Init;
120 p_vout->pf_end = End;
121 p_vout->pf_manage = NULL;
122 p_vout->pf_render = Render;
123 p_vout->pf_display = NULL;
125 var_Create( p_vout, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
126 var_Create( p_vout, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
127 var_Create( p_vout, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
128 var_Create( p_vout, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
129 var_Create( p_vout, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
134 /*****************************************************************************
135 * Init: initialize adjust video thread output method
136 *****************************************************************************/
137 static int Init( vout_thread_t *p_vout )
142 I_OUTPUTPICTURES = 0;
144 /* Initialize the output structure */
145 p_vout->output.i_chroma = p_vout->render.i_chroma;
146 p_vout->output.i_width = p_vout->render.i_width;
147 p_vout->output.i_height = p_vout->render.i_height;
148 p_vout->output.i_aspect = p_vout->render.i_aspect;
150 /* Try to open the real video output */
151 msg_Dbg( p_vout, "spawning the real video output" );
153 p_vout->p_sys->p_vout = vout_Create( p_vout,
154 p_vout->render.i_width, p_vout->render.i_height,
155 p_vout->render.i_chroma, p_vout->render.i_aspect );
157 /* Everything failed */
158 if( p_vout->p_sys->p_vout == NULL )
160 msg_Err( p_vout, "can't open vout, aborting" );
165 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
167 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
169 ADD_PARENT_CALLBACKS( SendEventsToChild );
174 /*****************************************************************************
175 * End: terminate adjust video thread output method
176 *****************************************************************************/
177 static void End( vout_thread_t *p_vout )
181 /* Free the fake output buffers we allocated */
182 for( i_index = I_OUTPUTPICTURES ; i_index ; )
185 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
189 /*****************************************************************************
190 * Destroy: destroy adjust video thread output method
191 *****************************************************************************
192 * Terminate an output method created by adjustCreateOutputMethod
193 *****************************************************************************/
194 static void Destroy( vlc_object_t *p_this )
196 vout_thread_t *p_vout = (vout_thread_t *)p_this;
198 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
199 vlc_object_detach( p_vout->p_sys->p_vout );
200 vout_Destroy( p_vout->p_sys->p_vout );
202 DEL_PARENT_CALLBACKS( SendEventsToChild );
204 free( p_vout->p_sys );
207 /*****************************************************************************
208 * Render: displays previously rendered output
209 *****************************************************************************
210 * This function send the currently rendered image to adjust modified image,
211 * waits until it is displayed and switch the two rendering buffers, preparing
213 *****************************************************************************/
214 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
220 uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
221 uint8_t *p_out, *p_out_v;
225 int32_t i_cont, i_lum;
226 int i_sat, i_sin, i_cos, i_x, i_y;
230 /* This is a new frame. Get a structure from the video_output. */
231 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
234 if( p_vout->b_die || p_vout->b_error )
238 msleep( VOUT_OUTMEM_SLEEP );
241 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
242 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
245 var_Get( p_vout, "contrast", &val );
246 i_cont = (int) ( val.f_float * 255 );
247 var_Get( p_vout, "brightness", &val );
248 i_lum = (int) (( val.f_float - 1.0 ) * 255 );
249 var_Get( p_vout, "hue", &val );
250 f_hue = (float) ( val.i_int * M_PI / 180 );
251 var_Get( p_vout, "saturation", &val );
252 i_sat = (int) (val.f_float * 256 );
253 var_Get( p_vout, "gamma", &val );
254 f_gamma = 1.0 / val.f_float;
256 /* Contrast is a fast but kludged function, so I put this gap to be
258 i_lum += 128 - i_cont / 2;
260 /* Fill the gamma lookup table */
261 for( i = 0 ; i < 256 ; i++ )
263 pi_gamma[ i ] = clip( pow(i / 255.0, f_gamma) * 255.0);
266 /* Fill the luma lookup table */
267 for( i = 0 ; i < 256 ; i++ )
269 pi_luma[ i ] = pi_gamma[clip( i_lum + i_cont * i / 256)];
276 p_in = p_pic->p[0].p_pixels;
277 p_in_end = p_in + p_pic->p[0].i_lines * p_pic->p[0].i_pitch - 8;
279 p_out = p_outpic->p[0].p_pixels;
281 for( ; p_in < p_in_end ; )
283 p_line_end = p_in + p_pic->p[0].i_visible_pitch - 8;
285 for( ; p_in < p_line_end ; )
287 /* Do 8 pixels at a time */
288 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
289 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
290 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
291 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
296 for( ; p_in < p_line_end ; )
298 *p_out++ = pi_luma[ *p_in++ ];
301 p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
302 p_out += p_outpic->p[0].i_pitch - p_outpic->p[0].i_visible_pitch;
306 * Do the U and V planes
309 p_in = p_pic->p[1].p_pixels;
310 p_in_v = p_pic->p[2].p_pixels;
311 p_in_end = p_in + p_pic->p[1].i_lines * p_pic->p[1].i_pitch - 8;
313 p_out = p_outpic->p[1].p_pixels;
314 p_out_v = p_outpic->p[2].p_pixels;
316 i_sin = sin(f_hue) * 256;
317 i_cos = cos(f_hue) * 256;
319 i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
320 i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
324 #define WRITE_UV_CLIP() \
325 i_u = *p_in++ ; i_v = *p_in_v++ ; \
326 *p_out++ = clip( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
327 * i_sat) >> 8) + 128); \
328 *p_out_v++ = clip( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
329 * i_sat) >> 8) + 128)
333 for( ; p_in < p_in_end ; )
335 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
337 for( ; p_in < p_line_end ; )
339 /* Do 8 pixels at a time */
340 WRITE_UV_CLIP(); WRITE_UV_CLIP();
341 WRITE_UV_CLIP(); WRITE_UV_CLIP();
342 WRITE_UV_CLIP(); WRITE_UV_CLIP();
343 WRITE_UV_CLIP(); WRITE_UV_CLIP();
348 for( ; p_in < p_line_end ; )
353 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
354 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
355 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
356 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
362 i_u = *p_in++ ; i_v = *p_in_v++ ; \
363 *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
364 * i_sat) >> 8) + 128; \
365 *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
370 for( ; p_in < p_in_end ; )
372 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
374 for( ; p_in < p_line_end ; )
376 /* Do 8 pixels at a time */
377 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
378 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
383 for( ; p_in < p_line_end ; )
388 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
389 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
390 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
391 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
395 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
397 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
400 /*****************************************************************************
401 * SendEvents: forward mouse and keyboard events to the parent p_vout
402 *****************************************************************************/
403 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
404 vlc_value_t oldval, vlc_value_t newval, void *p_data )
406 var_Set( (vlc_object_t *)p_data, psz_var, newval );
411 /*****************************************************************************
412 * SendEventsToChild: forward events to the child/children vout
413 *****************************************************************************/
414 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
415 vlc_value_t oldval, vlc_value_t newval, void *p_data )
417 vout_thread_t *p_vout = (vout_thread_t *)p_this;
418 var_Set( p_vout->p_sys->p_vout, psz_var, newval );