video_output.c 80.5 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2 3 4
 * video_output.c : video output thread
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
 * Copyright (C) 2000 VideoLAN
 *
 * Authors:
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
25
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
26

27
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
28
 * Preamble
29
 *****************************************************************************/
30 31 32 33
#include <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <stdio.h>                                              /* sprintf() */
#include <string.h>                                            /* strerror() */
Vincent Seguin's avatar
Vincent Seguin committed
34

35
#include "threads.h"
Michel Kaempf's avatar
Michel Kaempf committed
36 37 38
#include "common.h"
#include "config.h"
#include "mtime.h"
39
#include "plugins.h"
Michel Kaempf's avatar
Michel Kaempf committed
40 41
#include "video.h"
#include "video_output.h"
Vincent Seguin's avatar
Vincent Seguin committed
42
#include "video_text.h"
43
#include "video_yuv.h"
44

Vincent Seguin's avatar
Vincent Seguin committed
45
#include "intf_msg.h"
46
#include "main.h"
Vincent Seguin's avatar
Vincent Seguin committed
47

48
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
49
 * Local prototypes
50
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
51 52
static int      BinaryLog         ( u32 i );
static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
53 54 55 56 57
static int      InitThread        ( vout_thread_t *p_vout );
static void     RunThread         ( vout_thread_t *p_vout );
static void     ErrorThread       ( vout_thread_t *p_vout );
static void     EndThread         ( vout_thread_t *p_vout );
static void     DestroyThread     ( vout_thread_t *p_vout, int i_status );
58
static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
59 60 61 62 63 64 65 66 67 68 69 70
                                    int i_h_align, int i_v_align,
                                    unsigned char *psz_text );
static void     SetBufferArea     ( vout_thread_t *p_vout, int i_x, int i_y,
                                    int i_w, int i_h );
static void     SetBufferPicture  ( vout_thread_t *p_vout, picture_t *p_pic );
static void     RenderPicture     ( vout_thread_t *p_vout, picture_t *p_pic );
static void     RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
static void     RenderSubPicture  ( vout_thread_t *p_vout,
                                    subpicture_t *p_subpic );
static void     RenderInterface   ( vout_thread_t *p_vout );
static int      RenderIdle        ( vout_thread_t *p_vout );
static void     RenderInfo        ( vout_thread_t *p_vout );
71
static void     Synchronize       ( vout_thread_t *p_vout, s64 i_delay );
72 73 74 75
static int      Manage            ( vout_thread_t *p_vout );
static int      Align             ( vout_thread_t *p_vout, int *pi_x,
                                    int *pi_y, int i_width, int i_height,
                                    int i_h_align, int i_v_align );
76 77
static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
                                    u16 *green, u16 *blue, u16 *transp );
Michel Kaempf's avatar
Michel Kaempf committed
78

79
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
80
 * vout_CreateThread: creates a new video output thread
81
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
82 83 84
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
 * If pi_status is NULL, then the function will block until the thread is ready.
85
 * If not, it will be updated using one of the THREAD_* constants.
86
 *****************************************************************************/
87 88
vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
                          int i_width, int i_height, int *pi_status, int i_method )
Michel Kaempf's avatar
Michel Kaempf committed
89
{
90 91 92
    vout_thread_t * p_vout;                             /* thread descriptor */
    int             i_status;                               /* thread status */
    int             i_index;               /* index for array initialization */
93
    char *          psz_method;
Michel Kaempf's avatar
Michel Kaempf committed
94

95
    /* Allocate descriptor */
96
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
97
    p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
98
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
99
    {
100
        intf_ErrMsg( "error: %s\n", strerror(ENOMEM) );
Michel Kaempf's avatar
Michel Kaempf committed
101 102
        return( NULL );
    }
103

104
    /* Request an interface plugin */
105 106
    psz_method = main_GetPszVariable( VOUT_METHOD_VAR, VOUT_DEFAULT_METHOD );

107
    if( RequestPlugin( &p_vout->vout_plugin, "vout", psz_method ) < 0 )
108
    {
109
        intf_ErrMsg( "error: could not open video plugin vout_%s.so\n", psz_method );
110 111
        free( p_vout );
        return( NULL );
112
    }
113 114

    /* Get plugins */
115 116 117 118 119 120
    p_vout->p_sys_create =  GetPluginFunction( p_vout->vout_plugin, "vout_SysCreate" );
    p_vout->p_sys_init =    GetPluginFunction( p_vout->vout_plugin, "vout_SysInit" );
    p_vout->p_sys_end =     GetPluginFunction( p_vout->vout_plugin, "vout_SysEnd" );
    p_vout->p_sys_destroy = GetPluginFunction( p_vout->vout_plugin, "vout_SysDestroy" );
    p_vout->p_sys_manage =  GetPluginFunction( p_vout->vout_plugin, "vout_SysManage" );
    p_vout->p_sys_display = GetPluginFunction( p_vout->vout_plugin, "vout_SysDisplay" );
121

122
    /* Initialize thread properties - thread id and locks will be initialized
123
     * later */
124
    p_vout->b_die               = 0;
125
    p_vout->b_error             = 0;
126 127
    p_vout->b_active            = 0;
    p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
128
    *p_vout->pi_status          = THREAD_CREATE;
129

130
    /* Initialize some fields used by the system-dependant method - these fields will
131
     * probably be modified by the method, and are only preferences */
132
    p_vout->i_changes           = 0;
133 134
    p_vout->i_width             = i_width;
    p_vout->i_height            = i_height;
135
    p_vout->i_bytes_per_line    = i_width * 2;
136 137
    p_vout->i_screen_depth      = 15;
    p_vout->i_bytes_per_pixel   = 2;
138
    p_vout->f_gamma             = VOUT_GAMMA;
139

Vincent Seguin's avatar
Vincent Seguin committed
140
    p_vout->b_grayscale         = main_GetIntVariable( VOUT_GRAYSCALE_VAR, VOUT_GRAYSCALE_DEFAULT );
141
    p_vout->b_info              = 0;
142 143
    p_vout->b_interface         = 0;
    p_vout->b_scale             = 0;
144 145

    p_vout->p_set_palette       = SetPalette;
146

Vincent Seguin's avatar
Vincent Seguin committed
147
    intf_DbgMsg("wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
148
                p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
Vincent Seguin's avatar
Vincent Seguin committed
149
                p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
150

151 152
    /* Initialize idle screen */
    p_vout->last_display_date   = mdate();
153
    p_vout->last_display_date   = 0;
154 155
    p_vout->last_idle_date      = 0;

156 157
#ifdef STATS
    /* Initialize statistics fields */
158 159 160
    p_vout->render_time         = 0;
    p_vout->c_fps_samples       = 0;
#endif
161 162 163 164

    /* Initialize buffer index */
    p_vout->i_buffer_index      = 0;

165
    /* Initialize pictures and subpictures - translation tables and functions
166
     * will be initialized later in InitThread */
167 168
    for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
    {
169 170 171 172
        p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
        p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
        p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
        p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
173
    }
174
    p_vout->i_pictures = 0;
175 176 177

    /* Initialize synchronization informations */
    p_vout->i_synchro_level     = VOUT_SYNCHRO_LEVEL_START;
178

179 180
    /* Create and initialize system-dependant method - this function issues its
     * own error messages */
181
    if( p_vout->p_sys_create( p_vout, psz_display, i_root_window ) )
Michel Kaempf's avatar
Michel Kaempf committed
182
    {
183
        TrashPlugin( p_vout->vout_plugin );
184 185
        free( p_vout );
        return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
186
    }
Vincent Seguin's avatar
Vincent Seguin committed
187
    intf_DbgMsg("actual configuration: %dx%d, %d/%d bpp (%d Bpl), masks: 0x%x/0x%x/0x%x\n",
188
                p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
Vincent Seguin's avatar
Vincent Seguin committed
189 190 191 192 193 194 195 196
                p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
                p_vout->i_red_mask, p_vout->i_green_mask, p_vout->i_blue_mask );

    /* Calculate shifts from system-updated masks */
    MaskToShift( &p_vout->i_red_lshift,   &p_vout->i_red_rshift,   p_vout->i_red_mask );
    MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift, p_vout->i_green_mask );
    MaskToShift( &p_vout->i_blue_lshift,  &p_vout->i_blue_rshift,  p_vout->i_blue_mask );

197
    /* Set some useful colors */
198
    p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
Vincent Seguin's avatar
Vincent Seguin committed
199 200
    p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
    p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
201
    p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
202

203 204
    /* Load fonts - fonts must be initialized after the system method since
     * they may be dependant on screen depth and other thread properties */
205
    p_vout->p_default_font      = vout_LoadFont( VOUT_DEFAULT_FONT );
Vincent Seguin's avatar
Vincent Seguin committed
206 207
    if( p_vout->p_default_font == NULL )
    {
208
        p_vout->p_sys_destroy( p_vout );
209
        TrashPlugin( p_vout->vout_plugin );
210 211 212 213
        free( p_vout );
        return( NULL );
    }
    p_vout->p_large_font        = vout_LoadFont( VOUT_LARGE_FONT );
Vincent Seguin's avatar
Vincent Seguin committed
214 215
    if( p_vout->p_large_font == NULL )
    {
216
        vout_UnloadFont( p_vout->p_default_font );
217
        p_vout->p_sys_destroy( p_vout );
218
        TrashPlugin( p_vout->vout_plugin );
219 220 221
        free( p_vout );
        return( NULL );
    }
Vincent Seguin's avatar
Vincent Seguin committed
222

Michel Kaempf's avatar
Michel Kaempf committed
223
    /* Create thread and set locks */
Vincent Seguin's avatar
Vincent Seguin committed
224
    vlc_mutex_init( &p_vout->picture_lock );
225 226 227
    vlc_mutex_init( &p_vout->subpicture_lock );
    vlc_mutex_init( &p_vout->change_lock );
    vlc_mutex_lock( &p_vout->change_lock );
Vincent Seguin's avatar
Vincent Seguin committed
228
    if( vlc_thread_create( &p_vout->thread_id, "video output", (void *) RunThread, (void *) p_vout) )
Michel Kaempf's avatar
Michel Kaempf committed
229
    {
230
        intf_ErrMsg("error: %s\n", strerror(ENOMEM));
Vincent Seguin's avatar
Vincent Seguin committed
231
        vout_UnloadFont( p_vout->p_default_font );
232
        vout_UnloadFont( p_vout->p_large_font );
233
        p_vout->p_sys_destroy( p_vout );
234
        TrashPlugin( p_vout->vout_plugin );
Michel Kaempf's avatar
Michel Kaempf committed
235 236
        free( p_vout );
        return( NULL );
237
    }
Michel Kaempf's avatar
Michel Kaempf committed
238

239
    intf_Msg("Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
Vincent Seguin's avatar
Vincent Seguin committed
240
             p_vout->i_height, p_vout->i_screen_depth, p_vout->i_bytes_per_pixel * 8 );
241

Michel Kaempf's avatar
Michel Kaempf committed
242 243 244 245
    /* If status is NULL, wait until the thread is created */
    if( pi_status == NULL )
    {
        do
246
        {
Michel Kaempf's avatar
Michel Kaempf committed
247
            msleep( THREAD_SLEEP );
248
        }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
Michel Kaempf's avatar
Michel Kaempf committed
249 250 251
                && (i_status != THREAD_FATAL) );
        if( i_status != THREAD_READY )
        {
252 253
            return( NULL );
        }
Michel Kaempf's avatar
Michel Kaempf committed
254 255 256 257
    }
    return( p_vout );
}

258
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
259
 * vout_DestroyThread: destroys a previously created thread
260 261
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
262
 * The function will request a destruction of the specified thread. If pi_error
263
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
264
 * update using one of the THREAD_* constants.
265
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
266
void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
267 268
{
    int     i_status;                                       /* thread status */
Michel Kaempf's avatar
Michel Kaempf committed
269 270

    /* Set status */
271
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
272
    p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
273 274
    *p_vout->pi_status = THREAD_DESTROY;

Michel Kaempf's avatar
Michel Kaempf committed
275 276 277 278
    /* Request thread destruction */
    p_vout->b_die = 1;

    /* If status is NULL, wait until thread has been destroyed */
279
    if( pi_status == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
280 281 282 283
    {
        do
        {
            msleep( THREAD_SLEEP );
284 285
        }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
                && (i_status != THREAD_FATAL) );
Michel Kaempf's avatar
Michel Kaempf committed
286 287 288
    }
}

289
/*****************************************************************************
290
 * vout_DisplaySubPicture: display a subpicture unit
291 292
 *****************************************************************************
 * Remove the reservation flag of an subpicture, which will cause it to be ready
293
 * for display. The picture does not need to be locked, since it is ignored by
Vincent Seguin's avatar
Vincent Seguin committed
294
 * the output thread if is reserved.
295
 *****************************************************************************/
296
void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
297 298
{
#ifdef DEBUG_VIDEO
299 300
    char        psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
    char        psz_end_date[MSTRTIME_MAX_SIZE];   /* buffer for date string */
Vincent Seguin's avatar
Vincent Seguin committed
301 302 303 304
#endif

#ifdef DEBUG
    /* Check if status is valid */
305
    if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
306
    {
307 308 309
        intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
                    p_subpic->i_status );
    }
Vincent Seguin's avatar
Vincent Seguin committed
310 311 312
#endif

    /* Remove reservation flag */
313
    p_subpic->i_status = READY_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
314 315

#ifdef DEBUG_VIDEO
316
    /* Send subpicture informations */
317 318 319 320
    intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n",
                p_subpic, p_subpic->i_type,
                mstrtime( psz_begin_date, p_subpic->begin_date ),
                mstrtime( psz_end_date, p_subpic->end_date ) );
Vincent Seguin's avatar
Vincent Seguin committed
321 322 323
#endif
}

324
/*****************************************************************************
325
 * vout_CreateSubPicture: allocate an subpicture in the video output heap.
326 327
 *****************************************************************************
 * This function create a reserved subpicture in the video output heap.
Vincent Seguin's avatar
Vincent Seguin committed
328
 * A null pointer is returned if the function fails. This method provides an
329
 * already allocated zone of memory in the spu data fields. It needs locking
330 331 332
 * since several pictures can be created by several producers threads.
 *****************************************************************************/
subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
333
                                     int i_size )
Vincent Seguin's avatar
Vincent Seguin committed
334
{
335 336 337
    int                 i_subpic;                        /* subpicture index */
    subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
    subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
338 339 340 341

    /* Get lock */
    vlc_mutex_lock( &p_vout->subpicture_lock );

342 343
    /*
     * Look for an empty place
344 345 346
     */
    for( i_subpic = 0; i_subpic < VOUT_MAX_PICTURES; i_subpic++ )
    {
347 348 349 350 351 352 353
        if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
        {
            /* Subpicture is marked for destruction, but is still allocated */
            if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
                (p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
            {
                /* Memory size do match or is smaller : memory will not be reallocated,
354
                 * and function can end immediately - this is the best possible case,
355
                 * since no memory allocation needs to be done */
356
                p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
357
#ifdef DEBUG_VIDEO
358 359
                intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
                            &p_vout->p_subpicture[i_subpic] );
360
#endif
361 362 363 364 365 366 367 368 369 370
                vlc_mutex_unlock( &p_vout->subpicture_lock );
                return( &p_vout->p_subpicture[i_subpic] );
            }
            else if( p_destroyed_subpic == NULL )
            {
                /* Memory size do not match, but subpicture index will be kept in
                 * case no other place are left */
                p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
            }
        }
371
        else if( (p_free_subpic == NULL) &&
372 373
                 (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
        {
374
            /* Subpicture is empty and ready for allocation */
375 376 377 378 379 380
            p_free_subpic = &p_vout->p_subpicture[i_subpic];
        }
    }

    /* If no free subpicture is available, use a destroyed subpicture */
    if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
381
    {
382 383
        /* No free subpicture or matching destroyed subpicture has been found, but
         * a destroyed subpicture is still avalaible */
384
        free( p_destroyed_subpic->p_data );
385 386 387 388 389 390 391 392 393 394 395
        p_free_subpic = p_destroyed_subpic;
    }

    /*
     * Prepare subpicture
     */
    if( p_free_subpic != NULL )
    {
        /* Allocate memory */
        switch( i_type )
        {
396 397
        case TEXT_SUBPICTURE:                             /* text subpicture */
            p_free_subpic->p_data = malloc( i_size + 1 );
398 399 400 401
            break;
#ifdef DEBUG
        default:
            intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
402 403 404
            p_free_subpic->p_data   =  NULL;
            break;
#endif
405 406 407 408 409 410
        }

        if( p_free_subpic->p_data != NULL )
        {                    /* Copy subpicture informations, set some default values */
            p_free_subpic->i_type                      = i_type;
            p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
411
            p_free_subpic->i_size                      = i_size;
412
            p_free_subpic->i_x                         = 0;
413
            p_free_subpic->i_y                         = 0;
414 415
            p_free_subpic->i_width                     = 0;
            p_free_subpic->i_height                    = 0;
416 417
            p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
            p_free_subpic->i_vertical_align            = CENTER_RALIGN;
418 419 420 421
        }
        else
        {
            /* Memory allocation failed : set subpicture as empty */
422 423 424 425
            p_free_subpic->i_type   =  EMPTY_SUBPICTURE;
            p_free_subpic->i_status =  FREE_SUBPICTURE;
            p_free_subpic =            NULL;
            intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) );
426
        }
427

428
#ifdef DEBUG_VIDEO
429
        intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
430 431 432 433
#endif
        vlc_mutex_unlock( &p_vout->subpicture_lock );
        return( p_free_subpic );
    }
434

435 436 437 438
    /* No free or destroyed subpicture could be found */
    intf_DbgMsg( "warning: heap is full\n" );
    vlc_mutex_unlock( &p_vout->subpicture_lock );
    return( NULL );
Vincent Seguin's avatar
Vincent Seguin committed
439 440
}

441
/*****************************************************************************
442
 * vout_DestroySubPicture: remove a subpicture from the heap
443
 *****************************************************************************
444
 * This function frees a previously reserved subpicture.
Vincent Seguin's avatar
Vincent Seguin committed
445
 * It is meant to be used when the construction of a picture aborted.
446
 * This function does not need locking since reserved subpictures are ignored
447
 * by the output thread.
448
 *****************************************************************************/
449
void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
450 451
{
#ifdef DEBUG
452 453
   /* Check if status is valid */
   if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
454
   {
455 456 457
       intf_DbgMsg("error: subpicture %p has invalid status %d\n",
                   p_subpic, p_subpic->i_status );
   }
Vincent Seguin's avatar
Vincent Seguin committed
458 459
#endif

460
    p_subpic->i_status = DESTROYED_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
461 462

#ifdef DEBUG_VIDEO
463
    intf_DbgMsg("subpicture %p\n", p_subpic);
Vincent Seguin's avatar
Vincent Seguin committed
464 465 466
#endif
}

467
/*****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
468
 * vout_DisplayPicture: display a picture
469
 *****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
470
 * Remove the reservation flag of a picture, which will cause it to be ready for
471
 * display. The picture won't be displayed until vout_DatePicture has been
472
 * called.
473
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
474
void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
475
{
476 477
    vlc_mutex_lock( &p_vout->picture_lock );
    switch( p_pic->i_status )
478
    {
479
    case RESERVED_PICTURE:
480
        p_pic->i_status = RESERVED_DISP_PICTURE;
481
        break;
482 483
    case RESERVED_DATED_PICTURE:
        p_pic->i_status = READY_PICTURE;
484
        break;
485
#ifdef DEBUG
486 487 488
    default:
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
        break;
489
#endif
490
    }
Michel Kaempf's avatar
Michel Kaempf committed
491

492
#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
493
    intf_DbgMsg("picture %p\n", p_pic);
494
#endif
495
    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
496 497
}

498
/*****************************************************************************
499
 * vout_DatePicture: date a picture
500
 *****************************************************************************
501
 * Remove the reservation flag of a picture, which will cause it to be ready for
502
 * display. The picture won't be displayed until vout_DisplayPicture has been
503
 * called.
504
 *****************************************************************************/
505 506
void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
{
Vincent Seguin's avatar
Vincent Seguin committed
507
#ifdef DEBUG_VIDEO
508
    char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
Vincent Seguin's avatar
Vincent Seguin committed
509 510
#endif

511
    vlc_mutex_lock( &p_vout->picture_lock );
512
    p_pic->date = date;
513 514
    switch( p_pic->i_status )
    {
515
    case RESERVED_PICTURE:
516
        p_pic->i_status = RESERVED_DATED_PICTURE;
517
        break;
518 519
    case RESERVED_DISP_PICTURE:
        p_pic->i_status = READY_PICTURE;
520
        break;
521
#ifdef DEBUG
522 523 524
    default:
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
        break;
525 526 527 528
#endif
    }

#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
529
    intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
530
#endif
531
    vlc_mutex_unlock( &p_vout->picture_lock );
532 533
}

534
/*****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
535
 * vout_CreatePicture: allocate a picture in the video output heap.
536 537
 *****************************************************************************
 * This function create a reserved image in the video output heap.
Vincent Seguin's avatar
Vincent Seguin committed
538
 * A null pointer is returned if the function fails. This method provides an
539
 * already allocated zone of memory in the picture data fields. It needs locking
540 541 542
 * since several pictures can be created by several producers threads.
 *****************************************************************************/
picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
543
                               int i_width, int i_height )
Michel Kaempf's avatar
Michel Kaempf committed
544
{
545 546 547 548
    int         i_picture;                                  /* picture index */
    int         i_chroma_width = 0;                          /* chroma width */
    picture_t * p_free_picture = NULL;                 /* first free picture */
    picture_t * p_destroyed_picture = NULL;       /* first destroyed picture */
Michel Kaempf's avatar
Michel Kaempf committed
549

Vincent Seguin's avatar
Vincent Seguin committed
550
    /* Get lock */
Vincent Seguin's avatar
Vincent Seguin committed
551
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
552

553 554
    /*
     * Look for an empty place
Vincent Seguin's avatar
Vincent Seguin committed
555
     */
556
    for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
Vincent Seguin's avatar
Vincent Seguin committed
557
    {
558 559 560
        if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
        {
            /* Picture is marked for destruction, but is still allocated - note
561
             * that if width and type are the same for two pictures, chroma_width
562
             * should also be the same */
563 564 565 566 567
            if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
                (p_vout->p_picture[i_picture].i_height         == i_height) &&
                (p_vout->p_picture[i_picture].i_width          == i_width) )
            {
                /* Memory size do match : memory will not be reallocated, and function
Vincent Seguin's avatar
Vincent Seguin committed
568 569
                 * can end immediately - this is the best possible case, since no
                 * memory allocation needs to be done */
570
                p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
571
                p_vout->i_pictures++;
572
#ifdef DEBUG_VIDEO
573 574
                intf_DbgMsg("picture %p (in destroyed picture slot)\n",
                            &p_vout->p_picture[i_picture] );
575
#endif
576 577 578 579 580 581 582 583 584 585
                vlc_mutex_unlock( &p_vout->picture_lock );
                return( &p_vout->p_picture[i_picture] );
            }
            else if( p_destroyed_picture == NULL )
            {
                /* Memory size do not match, but picture index will be kept in
                 * case no other place are left */
                p_destroyed_picture = &p_vout->p_picture[i_picture];
            }
        }
586
        else if( (p_free_picture == NULL) &&
Vincent Seguin's avatar
Vincent Seguin committed
587 588
                 (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
        {
589
            /* Picture is empty and ready for allocation */
590
            p_free_picture = &p_vout->p_picture[i_picture];
Vincent Seguin's avatar
Vincent Seguin committed
591
        }
Michel Kaempf's avatar
Michel Kaempf committed
592 593
    }

Vincent Seguin's avatar
Vincent Seguin committed
594 595
    /* If no free picture is available, use a destroyed picture */
    if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
596
    {
597 598
        /* No free picture or matching destroyed picture has been found, but
         * a destroyed picture is still avalaible */
599 600
        free( p_destroyed_picture->p_data );
        p_free_picture = p_destroyed_picture;
Michel Kaempf's avatar
Michel Kaempf committed
601 602
    }

Vincent Seguin's avatar
Vincent Seguin committed
603 604 605 606 607 608 609
    /*
     * Prepare picture
     */
    if( p_free_picture != NULL )
    {
        /* Allocate memory */
        switch( i_type )
Michel Kaempf's avatar
Michel Kaempf committed
610
        {
611 612
        case YUV_420_PICTURE:        /* YUV 420: 1,1/4,1/4 samples per pixel */
            i_chroma_width = i_width / 2;
Vincent Seguin's avatar
Vincent Seguin committed
613
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
614
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
615 616
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
617
            break;
618 619
        case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
            i_chroma_width = i_width / 2;
620 621
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
622 623
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
624
            break;
625 626
        case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
            i_chroma_width = i_width;
627 628
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
629 630
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
631
            break;
Vincent Seguin's avatar
Vincent Seguin committed
632 633
#ifdef DEBUG
        default:
634
            intf_DbgMsg("error: unknown picture type %d\n", i_type );
635 636 637
            p_free_picture->p_data   =  NULL;
            break;
#endif
Michel Kaempf's avatar
Michel Kaempf committed
638 639
        }

Vincent Seguin's avatar
Vincent Seguin committed
640
        if( p_free_picture->p_data != NULL )
641
        {
642
            /* Copy picture informations, set some default values */
643 644
            p_free_picture->i_type                      = i_type;
            p_free_picture->i_status                    = RESERVED_PICTURE;
645
            p_free_picture->i_matrix_coefficients       = 1;
646 647
            p_free_picture->i_width                     = i_width;
            p_free_picture->i_height                    = i_height;
648
            p_free_picture->i_chroma_width              = i_chroma_width;
649
            p_free_picture->i_display_horizontal_offset = 0;
650
            p_free_picture->i_display_vertical_offset   = 0;
651 652
            p_free_picture->i_display_width             = i_width;
            p_free_picture->i_display_height            = i_height;
653 654
            p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
            p_free_picture->i_refcount                  = 0;
655
            p_vout->i_pictures++;
Vincent Seguin's avatar
Vincent Seguin committed
656 657 658 659
        }
        else
        {
            /* Memory allocation failed : set picture as empty */
660 661 662 663
            p_free_picture->i_type   =  EMPTY_PICTURE;
            p_free_picture->i_status =  FREE_PICTURE;
            p_free_picture =            NULL;
            intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) );
Vincent Seguin's avatar
Vincent Seguin committed
664
        }
665

666
#ifdef DEBUG_VIDEO
667
        intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
668
#endif
Vincent Seguin's avatar
Vincent Seguin committed
669
        vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
670
        return( p_free_picture );
Michel Kaempf's avatar
Michel Kaempf committed
671
    }
672

673
    /* No free or destroyed picture could be found */
674
    intf_DbgMsg( "warning: heap is full\n" );
Vincent Seguin's avatar
Vincent Seguin committed
675
    vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
676
    return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
677 678
}

679
/*****************************************************************************
680
 * vout_DestroyPicture: remove a permanent or reserved picture from the heap
681
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
682
 * This function frees a previously reserved picture or a permanent
Vincent Seguin's avatar
Vincent Seguin committed
683 684
 * picture. It is meant to be used when the construction of a picture aborted.
 * Note that the picture will be destroyed even if it is linked !
685
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
686
void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
687
{
688
   vlc_mutex_lock( &p_vout->picture_lock );
689

690
#ifdef DEBUG
691
   /* Check if picture status is valid */
692
   if( (p_pic->i_status != RESERVED_PICTURE) &&
693 694
       (p_pic->i_status != RESERVED_DATED_PICTURE) &&
       (p_pic->i_status != RESERVED_DISP_PICTURE) )
695
   {
696 697
       intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
   }
698 699
#endif

700
   p_pic->i_status = DESTROYED_PICTURE;
701
   p_vout->i_pictures--;
702 703

#ifdef DEBUG_VIDEO
704
   intf_DbgMsg("picture %p\n", p_pic);
705
#endif
706
   vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
707 708
}

709
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
710
 * vout_LinkPicture: increment reference counter of a picture
711
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
712
 * This function increment the reference counter of a picture in the video
713
 * heap. It needs a lock since several producer threads can access the picture.
714
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
715 716
void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
717
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
718
    p_pic->i_refcount++;
719 720

#ifdef DEBUG_VIDEO
721
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
722
#endif
723 724

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
725 726
}

727
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
728
 * vout_UnlinkPicture: decrement reference counter of a picture
729
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
730
 * This function decrement the reference counter of a picture in the video heap.
731
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
732 733
void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
734
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
735
    p_pic->i_refcount--;
736 737 738 739 740

#ifdef DEBUG_VIDEO
    if( p_pic->i_refcount < 0 )
    {
        intf_DbgMsg("error: refcount < 0\n");
741 742
        p_pic->i_refcount = 0;
    }
743 744
#endif

Vincent Seguin's avatar
Vincent Seguin committed
745
    if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
Michel Kaempf's avatar
Michel Kaempf committed
746
    {
747
        p_pic->i_status = DESTROYED_PICTURE;
748
        p_vout->i_pictures--;
Michel Kaempf's avatar
Michel Kaempf committed
749
    }
750 751

#ifdef DEBUG_VIDEO
752
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
753
#endif
754 755

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
756 757
}

758
/*****************************************************************************
759
 * vout_SetBuffers: set buffers adresses
760 761
 *****************************************************************************
 * This function is called by system drivers to set buffers video memory
762
 * adresses.
763
 *****************************************************************************/
764
void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
765 766
{
    /* No picture previously */
767 768 769 770 771 772 773 774
    p_vout->p_buffer[0].i_pic_x =         0;
    p_vout->p_buffer[0].i_pic_y =         0;
    p_vout->p_buffer[0].i_pic_width =     0;
    p_vout->p_buffer[0].i_pic_height =    0;
    p_vout->p_buffer[1].i_pic_x =         0;
    p_vout->p_buffer[1].i_pic_y =         0;
    p_vout->p_buffer[1].i_pic_width =     0;
    p_vout->p_buffer[1].i_pic_height =    0;
775 776

    /* The first area covers all the screen */
777 778 779 780 781 782 783 784
    p_vout->p_buffer[0].i_areas =                 1;
    p_vout->p_buffer[0].pi_area_begin[0] =        0;
    p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
    p_vout->p_buffer[1].i_areas =                 1;
    p_vout->p_buffer[1].pi_area_begin[0] =        0;
    p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;

    /* Set adresses */
785 786
    p_vout->p_buffer[0].p_data = p_buf1;
    p_vout->p_buffer[1].p_data = p_buf2;
787 788
}

Vincent Seguin's avatar
Vincent Seguin committed
789 790 791 792 793 794 795 796 797 798 799 800 801
/*****************************************************************************
 * vout_Pixel2RGB: return red, green and blue from pixel value
 *****************************************************************************
 * Return color values, in 0-255 range, of the decomposition of a pixel. This
 * is a slow routine and should only be used for initialization phase.
 *****************************************************************************/
void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
{
    *pi_red =   i_pixel & p_vout->i_red_mask;
    *pi_green = i_pixel & p_vout->i_green_mask;
    *pi_blue =  i_pixel & p_vout->i_blue_mask;
}

Michel Kaempf's avatar
Michel Kaempf committed
802 803
/* following functions are local */

Vincent Seguin's avatar
Vincent Seguin committed
804 805 806
/*****************************************************************************
 * BinaryLog: computes the base 2 log of a binary value
 *****************************************************************************
807
 * This functions is used by MaskToShift, to get a bit index from a binary
Vincent Seguin's avatar
Vincent Seguin committed
808 809 810 811 812 813 814
 * value.
 *****************************************************************************/
static int BinaryLog(u32 i)
{
    int i_log;

    i_log = 0;
815 816
    if (i & 0xffff0000)
    {
Vincent Seguin's avatar
Vincent Seguin committed
817
        i_log = 16;
818 819 820
    }
    if (i & 0xff00ff00)
    {
Vincent Seguin's avatar
Vincent Seguin committed
821
        i_log += 8;
822