video_output.c 81.6 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
 * 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.
15
 * 
16 17
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 19
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
20
 *
21 22 23
 * 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, USA.
24
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
25

26
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
27
 * Preamble
28
 *****************************************************************************/
29 30
#include "defs.h"

31 32 33 34
#include <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <stdio.h>                                              /* sprintf() */
#include <string.h>                                            /* strerror() */
Vincent Seguin's avatar
Vincent Seguin committed
35

Michel Kaempf's avatar
Michel Kaempf committed
36
#include "config.h"
37 38
#include "common.h"
#include "threads.h"
Michel Kaempf's avatar
Michel Kaempf committed
39
#include "mtime.h"
40
#include "plugins.h"
Michel Kaempf's avatar
Michel Kaempf committed
41 42
#include "video.h"
#include "video_output.h"
Vincent Seguin's avatar
Vincent Seguin committed
43
#include "video_text.h"
Sam Hocevar's avatar
NEWS:  
Sam Hocevar committed
44
#include "video_spu.h"
45
#include "video_yuv.h"
46

Vincent Seguin's avatar
Vincent Seguin committed
47
#include "intf_msg.h"
48
#include "main.h"
Vincent Seguin's avatar
Vincent Seguin committed
49

50
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
51
 * Local prototypes
52
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
53 54
static int      BinaryLog         ( u32 i );
static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
55 56 57 58 59
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 );
60
static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
61 62 63 64 65 66 67 68 69 70 71 72
                                    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 );
73
static void     Synchronize       ( vout_thread_t *p_vout, s64 i_delay );
74 75 76 77
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 );
78 79
static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
                                    u16 *green, u16 *blue, u16 *transp );
Michel Kaempf's avatar
Michel Kaempf committed
80

81
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
82
 * vout_CreateThread: creates a new video output thread
83
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
84 85 86
 * 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.
87
 * If not, it will be updated using one of the THREAD_* constants.
88
 *****************************************************************************/
89
vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
90 91
                          int i_width, int i_height, int *pi_status,
                          int i_method, void *p_data )
Michel Kaempf's avatar
Michel Kaempf committed
92
{
93 94 95
    vout_thread_t * p_vout;                             /* thread descriptor */
    int             i_status;                               /* thread status */
    int             i_index;               /* index for array initialization */
96
    char *          psz_method;
Michel Kaempf's avatar
Michel Kaempf committed
97

98
    /* Allocate descriptor */
99
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
100
    p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
101
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
102
    {
103
        intf_ErrMsg( "error: %s\n", strerror(ENOMEM) );
Michel Kaempf's avatar
Michel Kaempf committed
104 105
        return( NULL );
    }
106

107
    /* Request an interface plugin */
108 109
    psz_method = main_GetPszVariable( VOUT_METHOD_VAR, VOUT_DEFAULT_METHOD );

110
    if( RequestPlugin( &p_vout->vout_plugin, psz_method ) < 0 )
111
    {
112
        intf_ErrMsg( "error: could not open video plugin %s.so\n", psz_method );
113 114
        free( p_vout );
        return( NULL );
115
    }
116 117

    /* Get plugins */
Sam Hocevar's avatar
Sam Hocevar committed
118 119 120 121 122 123 124 125 126 127 128 129
    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" );
130

131
    /* Initialize thread properties - thread id and locks will be initialized
132
     * later */
133
    p_vout->b_die               = 0;
134
    p_vout->b_error             = 0;
135 136
    p_vout->b_active            = 0;
    p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
137
    *p_vout->pi_status          = THREAD_CREATE;
138

139
    /* Initialize some fields used by the system-dependant method - these fields will
140
     * probably be modified by the method, and are only preferences */
141
    p_vout->i_changes           = 0;
142 143
    p_vout->i_width             = i_width;
    p_vout->i_height            = i_height;
144
    p_vout->i_bytes_per_line    = i_width * 2;
145 146
    p_vout->i_screen_depth      = 15;
    p_vout->i_bytes_per_pixel   = 2;
147
    p_vout->f_gamma             = VOUT_GAMMA;
148

Sam Hocevar's avatar
Sam Hocevar committed
149 150
    p_vout->b_grayscale         = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
                                                       VOUT_GRAYSCALE_DEFAULT );
151
    p_vout->b_info              = 0;
152 153
    p_vout->b_interface         = 0;
    p_vout->b_scale             = 0;
154 155

    p_vout->p_set_palette       = SetPalette;
156

Sam Hocevar's avatar
Sam Hocevar committed
157 158 159
    intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
                 p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
                 p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
160

161 162
    /* Initialize idle screen */
    p_vout->last_display_date   = mdate();
163
    p_vout->last_display_date   = 0;
164 165
    p_vout->last_idle_date      = 0;

166 167
#ifdef STATS
    /* Initialize statistics fields */
168 169 170
    p_vout->render_time         = 0;
    p_vout->c_fps_samples       = 0;
#endif
171 172 173 174

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

175
    /* Initialize pictures and subpictures - translation tables and functions
176
     * will be initialized later in InitThread */
177 178
    for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
    {
179 180
        p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
        p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
181 182 183
    }
    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
    {
184 185
        p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
        p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
186
    }
187
    p_vout->i_pictures = 0;
188 189 190

    /* Initialize synchronization informations */
    p_vout->i_synchro_level     = VOUT_SYNCHRO_LEVEL_START;
191

192 193
    /* Create and initialize system-dependant method - this function issues its
     * own error messages */
194
    if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
Michel Kaempf's avatar
Michel Kaempf committed
195
    {
196
        TrashPlugin( p_vout->vout_plugin );
197 198
        free( p_vout );
        return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
199
    }
Vincent Seguin's avatar
Vincent Seguin committed
200
    intf_DbgMsg("actual configuration: %dx%d, %d/%d bpp (%d Bpl), masks: 0x%x/0x%x/0x%x\n",
201
                p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
Vincent Seguin's avatar
Vincent Seguin committed
202 203 204 205 206 207 208 209
                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 );

210
    /* Set some useful colors */
211
    p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
Vincent Seguin's avatar
Vincent Seguin committed
212 213
    p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
    p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
214
    p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
215

216 217
    /* Load fonts - fonts must be initialized after the system method since
     * they may be dependant on screen depth and other thread properties */
218 219 220 221 222
    p_vout->p_default_font      = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
    if( p_vout->p_default_font == NULL )
    {
        p_vout->p_default_font  = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
    }
Vincent Seguin's avatar
Vincent Seguin committed
223 224
    if( p_vout->p_default_font == NULL )
    {
225
        p_vout->p_sys_destroy( p_vout );
226
        TrashPlugin( p_vout->vout_plugin );
227 228 229
        free( p_vout );
        return( NULL );
    }
230 231 232 233 234
    p_vout->p_large_font        = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
    if( p_vout->p_large_font == NULL )
    {
        p_vout->p_large_font    = vout_LoadFont( "share/" VOUT_LARGE_FONT );
    }
Vincent Seguin's avatar
Vincent Seguin committed
235 236
    if( p_vout->p_large_font == NULL )
    {
237
        vout_UnloadFont( p_vout->p_default_font );
238
        p_vout->p_sys_destroy( p_vout );
239
        TrashPlugin( p_vout->vout_plugin );
240 241 242
        free( p_vout );
        return( NULL );
    }
Vincent Seguin's avatar
Vincent Seguin committed
243

Michel Kaempf's avatar
Michel Kaempf committed
244
    /* Create thread and set locks */
Vincent Seguin's avatar
Vincent Seguin committed
245
    vlc_mutex_init( &p_vout->picture_lock );
246 247 248
    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
249
    if( vlc_thread_create( &p_vout->thread_id, "video output", (void *) RunThread, (void *) p_vout) )
Michel Kaempf's avatar
Michel Kaempf committed
250
    {
251
        intf_ErrMsg("error: %s\n", strerror(ENOMEM));
Vincent Seguin's avatar
Vincent Seguin committed
252
        vout_UnloadFont( p_vout->p_default_font );
253
        vout_UnloadFont( p_vout->p_large_font );
254
        p_vout->p_sys_destroy( p_vout );
255
        TrashPlugin( p_vout->vout_plugin );
Michel Kaempf's avatar
Michel Kaempf committed
256 257
        free( p_vout );
        return( NULL );
258
    }
Michel Kaempf's avatar
Michel Kaempf committed
259

260
    intf_Msg("Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
Vincent Seguin's avatar
Vincent Seguin committed
261
             p_vout->i_height, p_vout->i_screen_depth, p_vout->i_bytes_per_pixel * 8 );
262

Michel Kaempf's avatar
Michel Kaempf committed
263 264 265 266
    /* If status is NULL, wait until the thread is created */
    if( pi_status == NULL )
    {
        do
267
        {
Michel Kaempf's avatar
Michel Kaempf committed
268
            msleep( THREAD_SLEEP );
269
        }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
Michel Kaempf's avatar
Michel Kaempf committed
270 271 272
                && (i_status != THREAD_FATAL) );
        if( i_status != THREAD_READY )
        {
273 274
            return( NULL );
        }
Michel Kaempf's avatar
Michel Kaempf committed
275 276 277 278
    }
    return( p_vout );
}

279
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
280
 * vout_DestroyThread: destroys a previously created thread
281 282
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
283
 * The function will request a destruction of the specified thread. If pi_error
284
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
285
 * update using one of the THREAD_* constants.
286
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
287
void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
288 289
{
    int     i_status;                                       /* thread status */
Michel Kaempf's avatar
Michel Kaempf committed
290 291

    /* Set status */
292
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
293
    p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
294 295
    *p_vout->pi_status = THREAD_DESTROY;

Michel Kaempf's avatar
Michel Kaempf committed
296 297 298 299
    /* Request thread destruction */
    p_vout->b_die = 1;

    /* If status is NULL, wait until thread has been destroyed */
300
    if( pi_status == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
301 302 303 304
    {
        do
        {
            msleep( THREAD_SLEEP );
305 306
        }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
                && (i_status != THREAD_FATAL) );
Michel Kaempf's avatar
Michel Kaempf committed
307 308 309
    }
}

310
/*****************************************************************************
311
 * vout_DisplaySubPicture: display a subpicture unit
312 313
 *****************************************************************************
 * Remove the reservation flag of an subpicture, which will cause it to be ready
314
 * for display. The picture does not need to be locked, since it is ignored by
Vincent Seguin's avatar
Vincent Seguin committed
315
 * the output thread if is reserved.
316
 *****************************************************************************/
317
void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
318 319
{
#ifdef DEBUG_VIDEO
320 321
    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
322 323 324 325
#endif

#ifdef DEBUG
    /* Check if status is valid */
326
    if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
327
    {
328 329 330
        intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
                    p_subpic->i_status );
    }
Vincent Seguin's avatar
Vincent Seguin committed
331 332 333
#endif

    /* Remove reservation flag */
334
    p_subpic->i_status = READY_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
335 336

#ifdef DEBUG_VIDEO
337
    /* Send subpicture informations */
338 339 340 341
    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
342 343 344
#endif
}

345
/*****************************************************************************
346
 * vout_CreateSubPicture: allocate an subpicture in the video output heap.
347 348
 *****************************************************************************
 * This function create a reserved subpicture in the video output heap.
Vincent Seguin's avatar
Vincent Seguin committed
349
 * A null pointer is returned if the function fails. This method provides an
350
 * already allocated zone of memory in the spu data fields. It needs locking
351 352 353
 * since several pictures can be created by several producers threads.
 *****************************************************************************/
subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
354
                                     int i_size )
Vincent Seguin's avatar
Vincent Seguin committed
355
{
356 357 358
    int                 i_subpic;                        /* subpicture index */
    subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
    subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
359 360 361 362

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

363 364
    /*
     * Look for an empty place
365
     */
366
    for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
367
    {
368 369 370 371 372 373
        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) )
            {
Sam Hocevar's avatar
NEWS:  
Sam Hocevar committed
374 375 376 377
                /* Memory size do match or is smaller : memory will not be
                 * reallocated, and function can end immediately - this is
                 * the best possible case, since no memory allocation needs
                 * to be done */
378
                p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
379
#ifdef DEBUG_VIDEO
380 381
                intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
                            &p_vout->p_subpicture[i_subpic] );
382
#endif
383 384 385 386 387 388 389 390 391 392
                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];
            }
        }
393
        else if( (p_free_subpic == NULL) &&
394 395
                 (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
        {
396
            /* Subpicture is empty and ready for allocation */
397 398 399 400 401 402
            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 ) )
403
    {
Sam Hocevar's avatar
NEWS:  
Sam Hocevar committed
404 405
        /* No free subpicture or matching destroyed subpicture has been
         * found, but a destroyed subpicture is still avalaible */
406
        free( p_destroyed_subpic->p_data );
407 408 409 410 411 412 413 414 415 416 417
        p_free_subpic = p_destroyed_subpic;
    }

    /*
     * Prepare subpicture
     */
    if( p_free_subpic != NULL )
    {
        /* Allocate memory */
        switch( i_type )
        {
418 419
        case TEXT_SUBPICTURE:                             /* text subpicture */
            p_free_subpic->p_data = malloc( i_size + 1 );
420
            break;
421 422 423
        case DVD_SUBPICTURE:                          /* DVD subpicture unit */
            p_free_subpic->p_data = malloc( i_size );
            break;
424 425 426
#ifdef DEBUG
        default:
            intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
427 428 429
            p_free_subpic->p_data   =  NULL;
            break;
#endif
430 431 432
        }

        if( p_free_subpic->p_data != NULL )
433
        {           /* Copy subpicture informations, set some default values */
434 435
            p_free_subpic->i_type                      = i_type;
            p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
436
            p_free_subpic->i_size                      = i_size;
437
            p_free_subpic->i_x                         = 0;
438
            p_free_subpic->i_y                         = 0;
439 440
            p_free_subpic->i_width                     = 0;
            p_free_subpic->i_height                    = 0;
441 442
            p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
            p_free_subpic->i_vertical_align            = CENTER_RALIGN;
443 444 445 446
        }
        else
        {
            /* Memory allocation failed : set subpicture as empty */
447 448 449 450
            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 ) );
451
        }
452

453
#ifdef DEBUG_VIDEO
454
        intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
455 456 457 458
#endif
        vlc_mutex_unlock( &p_vout->subpicture_lock );
        return( p_free_subpic );
    }
459

460 461 462 463
    /* 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
464 465
}

466
/*****************************************************************************
467
 * vout_DestroySubPicture: remove a subpicture from the heap
468
 *****************************************************************************
469
 * This function frees a previously reserved subpicture.
Vincent Seguin's avatar
Vincent Seguin committed
470
 * It is meant to be used when the construction of a picture aborted.
471
 * This function does not need locking since reserved subpictures are ignored
472
 * by the output thread.
473
 *****************************************************************************/
474
void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
475 476
{
#ifdef DEBUG
477 478
   /* Check if status is valid */
   if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
479
   {
480 481 482
       intf_DbgMsg("error: subpicture %p has invalid status %d\n",
                   p_subpic, p_subpic->i_status );
   }
Vincent Seguin's avatar
Vincent Seguin committed
483 484
#endif

485
    p_subpic->i_status = DESTROYED_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
486 487

#ifdef DEBUG_VIDEO
488
    intf_DbgMsg("subpicture %p\n", p_subpic);
Vincent Seguin's avatar
Vincent Seguin committed
489 490 491
#endif
}

492
/*****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
493
 * vout_DisplayPicture: display a picture
494
 *****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
495
 * Remove the reservation flag of a picture, which will cause it to be ready for
496
 * display. The picture won't be displayed until vout_DatePicture has been
497
 * called.
498
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
499
void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
500
{
501 502
    vlc_mutex_lock( &p_vout->picture_lock );
    switch( p_pic->i_status )
503
    {
504
    case RESERVED_PICTURE:
505
        p_pic->i_status = RESERVED_DISP_PICTURE;
506
        break;
507 508
    case RESERVED_DATED_PICTURE:
        p_pic->i_status = READY_PICTURE;
509
        break;
510
#ifdef DEBUG
511 512 513
    default:
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
        break;
514
#endif
515
    }
Michel Kaempf's avatar
Michel Kaempf committed
516

517
#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
518
    intf_DbgMsg("picture %p\n", p_pic);
519
#endif
520
    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
521 522
}

523
/*****************************************************************************
524
 * vout_DatePicture: date a picture
525
 *****************************************************************************
526
 * Remove the reservation flag of a picture, which will cause it to be ready for
527
 * display. The picture won't be displayed until vout_DisplayPicture has been
528
 * called.
529
 *****************************************************************************/
530 531
void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
{
Vincent Seguin's avatar
Vincent Seguin committed
532
#ifdef DEBUG_VIDEO
533
    char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
Vincent Seguin's avatar
Vincent Seguin committed
534 535
#endif

536
    vlc_mutex_lock( &p_vout->picture_lock );
537
    p_pic->date = date;
538 539
    switch( p_pic->i_status )
    {
540
    case RESERVED_PICTURE:
541
        p_pic->i_status = RESERVED_DATED_PICTURE;
542
        break;
543 544
    case RESERVED_DISP_PICTURE:
        p_pic->i_status = READY_PICTURE;
545
        break;
546
#ifdef DEBUG
547 548 549
    default:
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
        break;
550 551 552 553
#endif
    }

#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
554
    intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
555
#endif
556
    vlc_mutex_unlock( &p_vout->picture_lock );
557 558
}

559
/*****************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
560
 * vout_CreatePicture: allocate a picture in the video output heap.
561 562
 *****************************************************************************
 * This function create a reserved image in the video output heap.
Vincent Seguin's avatar
Vincent Seguin committed
563
 * A null pointer is returned if the function fails. This method provides an
564
 * already allocated zone of memory in the picture data fields. It needs locking
565 566 567
 * since several pictures can be created by several producers threads.
 *****************************************************************************/
picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
568
                               int i_width, int i_height )
Michel Kaempf's avatar
Michel Kaempf committed
569
{
570 571 572 573
    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
574

Vincent Seguin's avatar
Vincent Seguin committed
575
    /* Get lock */
Vincent Seguin's avatar
Vincent Seguin committed
576
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
577

578 579
    /*
     * Look for an empty place
Vincent Seguin's avatar
Vincent Seguin committed
580
     */
581
    for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
Vincent Seguin's avatar
Vincent Seguin committed
582
    {
583 584 585
        if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
        {
            /* Picture is marked for destruction, but is still allocated - note
586
             * that if width and type are the same for two pictures, chroma_width
587
             * should also be the same */
588 589 590 591 592
            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
593 594
                 * can end immediately - this is the best possible case, since no
                 * memory allocation needs to be done */
595
                p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
596
                p_vout->i_pictures++;
597
#ifdef DEBUG_VIDEO
598 599
                intf_DbgMsg("picture %p (in destroyed picture slot)\n",
                            &p_vout->p_picture[i_picture] );
600
#endif
601 602 603 604 605 606 607 608 609 610
                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];
            }
        }
611
        else if( (p_free_picture == NULL) &&
Vincent Seguin's avatar
Vincent Seguin committed
612 613
                 (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
        {
614
            /* Picture is empty and ready for allocation */
615
            p_free_picture = &p_vout->p_picture[i_picture];
Vincent Seguin's avatar
Vincent Seguin committed
616
        }
Michel Kaempf's avatar
Michel Kaempf committed
617 618
    }

Vincent Seguin's avatar
Vincent Seguin committed
619 620
    /* If no free picture is available, use a destroyed picture */
    if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
621
    {
622 623
        /* No free picture or matching destroyed picture has been found, but
         * a destroyed picture is still avalaible */
624 625
        free( p_destroyed_picture->p_data );
        p_free_picture = p_destroyed_picture;
Michel Kaempf's avatar
Michel Kaempf committed
626 627
    }

Vincent Seguin's avatar
Vincent Seguin committed
628 629 630 631 632 633 634
    /*
     * Prepare picture
     */
    if( p_free_picture != NULL )
    {
        /* Allocate memory */
        switch( i_type )
Michel Kaempf's avatar
Michel Kaempf committed
635
        {
636 637
        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
638
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
639
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
640 641
            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;
642
            break;
643 644
        case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
            i_chroma_width = i_width / 2;
645 646
            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
647 648
            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;
649
            break;
650 651
        case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
            i_chroma_width = i_width;
652 653
            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
654 655
            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;
656
            break;
Vincent Seguin's avatar
Vincent Seguin committed
657 658
#ifdef DEBUG
        default:
659
            intf_DbgMsg("error: unknown picture type %d\n", i_type );
660 661 662
            p_free_picture->p_data   =  NULL;
            break;
#endif
Michel Kaempf's avatar
Michel Kaempf committed
663 664
        }

Vincent Seguin's avatar
Vincent Seguin committed
665
        if( p_free_picture->p_data != NULL )
666
        {
667
            /* Copy picture informations, set some default values */
668 669
            p_free_picture->i_type                      = i_type;
            p_free_picture->i_status                    = RESERVED_PICTURE;
670
            p_free_picture->i_matrix_coefficients       = 1;
671 672
            p_free_picture->i_width                     = i_width;
            p_free_picture->i_height                    = i_height;
673
            p_free_picture->i_chroma_width              = i_chroma_width;
674
            p_free_picture->i_display_horizontal_offset = 0;
675
            p_free_picture->i_display_vertical_offset   = 0;
676 677
            p_free_picture->i_display_width             = i_width;
            p_free_picture->i_display_height            = i_height;
678 679
            p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
            p_free_picture->i_refcount                  = 0;
680
            p_vout->i_pictures++;
Vincent Seguin's avatar
Vincent Seguin committed
681 682 683 684
        }
        else
        {
            /* Memory allocation failed : set picture as empty */
685 686 687 688
            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
689
        }
690

691
#ifdef DEBUG_VIDEO
692
        intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
693
#endif
Vincent Seguin's avatar
Vincent Seguin committed
694
        vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
695
        return( p_free_picture );
Michel Kaempf's avatar
Michel Kaempf committed
696
    }
697

698
    /* No free or destroyed picture could be found */
699
    intf_DbgMsg( "warning: heap is full\n" );
Vincent Seguin's avatar
Vincent Seguin committed
700
    vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
701
    return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
702 703
}

704
/*****************************************************************************
705
 * vout_DestroyPicture: remove a permanent or reserved picture from the heap
706
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
707
 * This function frees a previously reserved picture or a permanent
Vincent Seguin's avatar
Vincent Seguin committed
708 709
 * 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 !
710
 *****************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
711
void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
712
{
713
   vlc_mutex_lock( &p_vout->picture_lock );
714

715
#ifdef DEBUG
716
   /* Check if picture status is valid */
717
   if( (p_pic->i_status != RESERVED_PICTURE) &&
718 719
       (p_pic->i_status != RESERVED_DATED_PICTURE) &&
       (p_pic->i_status != RESERVED_DISP_PICTURE) )
720
   {
721 722
       intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
   }
723 724
#endif

725
   p_pic->i_status = DESTROYED_PICTURE;
726
   p_vout->i_pictures--;
727 728

#ifdef DEBUG_VIDEO
729
   intf_DbgMsg("picture %p\n", p_pic);
730
#endif
731
   vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
732 733
}

734
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
735
 * vout_LinkPicture: increment reference counter of a picture
736
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
737
 * This function increment the reference counter of a picture in the video
738
 * heap. It needs a lock since several producer threads can access the picture.
739
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
740 741
void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
742
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
743
    p_pic->i_refcount++;
744 745

#ifdef DEBUG_VIDEO
746
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
747
#endif
748 749

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
750 751
}

752
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
753
 * vout_UnlinkPicture: decrement reference counter of a picture
754
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
755
 * This function decrement the reference counter of a picture in the video heap.
756
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
757 758
void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
759
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
760
    p_pic->i_refcount--;
761 762 763 764 765

#ifdef DEBUG_VIDEO
    if( p_pic->i_refcount < 0 )
    {
        intf_DbgMsg("error: refcount < 0\n");
766 767
        p_pic->i_refcount = 0;
    }
768 769
#endif

Vincent Seguin's avatar
Vincent Seguin committed
770
    if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
Michel Kaempf's avatar
Michel Kaempf committed
771
    {
772
        p_pic->i_status = DESTROYED_PICTURE;
773
        p_vout->i_pictures--;
Michel Kaempf's avatar
Michel Kaempf committed
774
    }
775 776

#ifdef DEBUG_VIDEO
777
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
778
#endif
779 780

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
781 782
}

783
/*****************************************************************************
784
 * vout_SetBuffers: set buffers adresses
785 786
 *****************************************************************************
 * This function is called by system drivers to set buffers video memory
787
 * adresses.
788
 *****************************************************************************/
789
void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
790 791
{
    /* No picture previously */
792 793 794 795 796 797 798 799
    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;
800 801

    /* The first area covers all the screen */
802 803 804 805 806 807 808 809
    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 */
810 811
    p_vout->p_buffer[0].p_data = p_buf1;
    p_vout->p_buffer