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_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 * Control: control facility for the vout (forwards to child vout)
104 *****************************************************************************/
105 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
107 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
110 /*****************************************************************************
111 * Create: allocates adjust video thread output method
112 *****************************************************************************
113 * This function allocates and initializes a adjust vout method.
114 *****************************************************************************/
115 static int Create( vlc_object_t *p_this )
117 vout_thread_t *p_vout = (vout_thread_t *)p_this;
119 /* Allocate structure */
120 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
121 if( p_vout->p_sys == NULL )
123 msg_Err( p_vout, "out of memory" );
127 p_vout->pf_init = Init;
128 p_vout->pf_end = End;
129 p_vout->pf_manage = NULL;
130 p_vout->pf_render = Render;
131 p_vout->pf_display = NULL;
132 p_vout->pf_control = Control;
134 var_Create( p_vout, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
135 var_Create( p_vout, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
136 var_Create( p_vout, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
137 var_Create( p_vout, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
138 var_Create( p_vout, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
143 /*****************************************************************************
144 * Init: initialize adjust video thread output method
145 *****************************************************************************/
146 static int Init( vout_thread_t *p_vout )
151 I_OUTPUTPICTURES = 0;
153 /* Initialize the output structure */
154 p_vout->output.i_chroma = p_vout->render.i_chroma;
155 p_vout->output.i_width = p_vout->render.i_width;
156 p_vout->output.i_height = p_vout->render.i_height;
157 p_vout->output.i_aspect = p_vout->render.i_aspect;
159 /* Try to open the real video output */
160 msg_Dbg( p_vout, "spawning the real video output" );
162 p_vout->p_sys->p_vout = vout_Create( p_vout,
163 p_vout->render.i_width, p_vout->render.i_height,
164 p_vout->render.i_chroma, p_vout->render.i_aspect );
166 /* Everything failed */
167 if( p_vout->p_sys->p_vout == NULL )
169 msg_Err( p_vout, "can't open vout, aborting" );
174 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
176 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
178 ADD_PARENT_CALLBACKS( SendEventsToChild );
183 /*****************************************************************************
184 * End: terminate adjust video thread output method
185 *****************************************************************************/
186 static void End( vout_thread_t *p_vout )
190 /* Free the fake output buffers we allocated */
191 for( i_index = I_OUTPUTPICTURES ; i_index ; )
194 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
198 /*****************************************************************************
199 * Destroy: destroy adjust video thread output method
200 *****************************************************************************
201 * Terminate an output method created by adjustCreateOutputMethod
202 *****************************************************************************/
203 static void Destroy( vlc_object_t *p_this )
205 vout_thread_t *p_vout = (vout_thread_t *)p_this;
207 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
208 vlc_object_detach( p_vout->p_sys->p_vout );
209 vout_Destroy( p_vout->p_sys->p_vout );
211 DEL_PARENT_CALLBACKS( SendEventsToChild );
213 free( p_vout->p_sys );
216 /*****************************************************************************
217 * Render: displays previously rendered output
218 *****************************************************************************
219 * This function send the currently rendered image to adjust modified image,
220 * waits until it is displayed and switch the two rendering buffers, preparing
222 *****************************************************************************/
223 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
229 uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
230 uint8_t *p_out, *p_out_v;
234 int32_t i_cont, i_lum;
235 int i_sat, i_sin, i_cos, i_x, i_y;
239 /* This is a new frame. Get a structure from the video_output. */
240 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
243 if( p_vout->b_die || p_vout->b_error )
247 msleep( VOUT_OUTMEM_SLEEP );
250 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
251 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
254 var_Get( p_vout, "contrast", &val );
255 i_cont = (int) ( val.f_float * 255 );
256 var_Get( p_vout, "brightness", &val );
257 i_lum = (int) (( val.f_float - 1.0 ) * 255 );
258 var_Get( p_vout, "hue", &val );
259 f_hue = (float) ( val.i_int * M_PI / 180 );
260 var_Get( p_vout, "saturation", &val );
261 i_sat = (int) (val.f_float * 256 );
262 var_Get( p_vout, "gamma", &val );
263 f_gamma = 1.0 / val.f_float;
265 /* Contrast is a fast but kludged function, so I put this gap to be
267 i_lum += 128 - i_cont / 2;
269 /* Fill the gamma lookup table */
270 for( i = 0 ; i < 256 ; i++ )
272 pi_gamma[ i ] = clip( pow(i / 255.0, f_gamma) * 255.0);
275 /* Fill the luma lookup table */
276 for( i = 0 ; i < 256 ; i++ )
278 pi_luma[ i ] = pi_gamma[clip( i_lum + i_cont * i / 256)];
285 p_in = p_pic->p[0].p_pixels;
286 p_in_end = p_in + p_pic->p[0].i_lines * p_pic->p[0].i_pitch - 8;
288 p_out = p_outpic->p[0].p_pixels;
290 for( ; p_in < p_in_end ; )
292 p_line_end = p_in + p_pic->p[0].i_visible_pitch - 8;
294 for( ; p_in < p_line_end ; )
296 /* Do 8 pixels at a time */
297 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
298 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
299 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
300 *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
305 for( ; p_in < p_line_end ; )
307 *p_out++ = pi_luma[ *p_in++ ];
310 p_in += p_pic->p[0].i_pitch - p_pic->p[0].i_visible_pitch;
311 p_out += p_outpic->p[0].i_pitch - p_outpic->p[0].i_visible_pitch;
315 * Do the U and V planes
318 p_in = p_pic->p[1].p_pixels;
319 p_in_v = p_pic->p[2].p_pixels;
320 p_in_end = p_in + p_pic->p[1].i_lines * p_pic->p[1].i_pitch - 8;
322 p_out = p_outpic->p[1].p_pixels;
323 p_out_v = p_outpic->p[2].p_pixels;
325 i_sin = sin(f_hue) * 256;
326 i_cos = cos(f_hue) * 256;
328 i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
329 i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
333 #define WRITE_UV_CLIP() \
334 i_u = *p_in++ ; i_v = *p_in_v++ ; \
335 *p_out++ = clip( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
336 * i_sat) >> 8) + 128); \
337 *p_out_v++ = clip( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
338 * i_sat) >> 8) + 128)
342 for( ; p_in < p_in_end ; )
344 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
346 for( ; p_in < p_line_end ; )
348 /* Do 8 pixels at a time */
349 WRITE_UV_CLIP(); WRITE_UV_CLIP();
350 WRITE_UV_CLIP(); WRITE_UV_CLIP();
351 WRITE_UV_CLIP(); WRITE_UV_CLIP();
352 WRITE_UV_CLIP(); WRITE_UV_CLIP();
357 for( ; p_in < p_line_end ; )
362 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
363 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
364 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
365 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
371 i_u = *p_in++ ; i_v = *p_in_v++ ; \
372 *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
373 * i_sat) >> 8) + 128; \
374 *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
379 for( ; p_in < p_in_end ; )
381 p_line_end = p_in + p_pic->p[1].i_visible_pitch - 8;
383 for( ; p_in < p_line_end ; )
385 /* Do 8 pixels at a time */
386 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
387 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
392 for( ; p_in < p_line_end ; )
397 p_in += p_pic->p[1].i_pitch - p_pic->p[1].i_visible_pitch;
398 p_in_v += p_pic->p[2].i_pitch - p_pic->p[2].i_visible_pitch;
399 p_out += p_outpic->p[1].i_pitch - p_outpic->p[1].i_visible_pitch;
400 p_out_v += p_outpic->p[2].i_pitch - p_outpic->p[2].i_visible_pitch;
404 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
406 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
409 /*****************************************************************************
410 * SendEvents: forward mouse and keyboard events to the parent p_vout
411 *****************************************************************************/
412 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
413 vlc_value_t oldval, vlc_value_t newval, void *p_data )
415 var_Set( (vlc_object_t *)p_data, psz_var, newval );
420 /*****************************************************************************
421 * SendEventsToChild: forward events to the child/children vout
422 *****************************************************************************/
423 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
424 vlc_value_t oldval, vlc_value_t newval, void *p_data )
426 vout_thread_t *p_vout = (vout_thread_t *)p_this;
427 var_Set( p_vout->p_sys->p_vout, psz_var, newval );