/***************************************************************************** * 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 * thread, and destroy a previously oppened video output thread. ***************************************************************************** * Copyright (C) 2000-2001 VideoLAN * $Id: video_output.c,v 1.241 2003/11/26 08:18:09 gbazin Exp $ * * Authors: Vincent Seguin * * 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, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #include /* free() */ #include #ifdef HAVE_SYS_TIMES_H # include #endif #include "vlc_video.h" #include "video_output.h" #include /* for input_thread_t and i_pts_delay */ #if defined( SYS_DARWIN ) #include "darwin_specific.h" #endif /***************************************************************************** * Local prototypes *****************************************************************************/ static int InitThread ( vout_thread_t * ); static void RunThread ( vout_thread_t * ); static void ErrorThread ( vout_thread_t * ); static void EndThread ( vout_thread_t * ); static void DestroyThread ( vout_thread_t * ); static int ReduceHeight ( int ); static int BinaryLog ( uint32_t ); static void MaskToShift ( int *, int *, uint32_t ); static void InitWindowSize ( vout_thread_t *, int *, int * ); /* Object variables callbacks */ static int FullscreenCallback( vlc_object_t *, char const *, vlc_value_t, vlc_value_t, void * ); static int DeinterlaceCallback( vlc_object_t *, char const *, vlc_value_t, vlc_value_t, void * ); static int FilterCallback( vlc_object_t *, char const *, vlc_value_t, vlc_value_t, void * ); /***************************************************************************** * vout_Request: find a video output thread, create one, or destroy one. ***************************************************************************** * This function looks for a video output thread matching the current * properties. If not found, it spawns a new one. *****************************************************************************/ vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout, unsigned int i_width, unsigned int i_height, vlc_fourcc_t i_chroma, unsigned int i_aspect ) { if( !i_width || !i_height || !i_chroma ) { /* Reattach video output to input before bailing out */ if( p_vout ) { vlc_object_t *p_playlist; p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE ); if( p_playlist ) { vlc_object_detach( p_vout ); vlc_object_attach( p_vout, p_playlist ); vlc_object_release( p_playlist ); } else { msg_Dbg( p_this, "cannot find playlist destroying vout" ); vlc_object_detach( p_vout ); vout_Destroy( p_vout ); } } return NULL; } /* If a video output was provided, lock it, otherwise look for one. */ if( p_vout ) { vlc_object_yield( p_vout ); } else { p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD ); if( !p_vout ) { vlc_object_t *p_playlist; p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE ); if( p_playlist ) { p_vout = vlc_object_find( p_playlist, VLC_OBJECT_VOUT, FIND_CHILD ); /* only first children of p_input for unused vout */ if( p_vout && p_vout->p_parent != p_playlist ) { vlc_object_release( p_vout ); p_vout = NULL; } vlc_object_release( p_playlist ); } } } /* If we now have a video output, check it has the right properties */ if( p_vout ) { char *psz_filter_chain; /* We don't directly check for the "filter" variable for obvious * performance reasons. */ if( p_vout->b_filter_change ) { psz_filter_chain = config_GetPsz( p_this, "filter" ); if( psz_filter_chain && !*psz_filter_chain ) { free( psz_filter_chain ); psz_filter_chain = NULL; } if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain ) { free( p_vout->psz_filter_chain ); p_vout->psz_filter_chain = NULL; } if( ( !psz_filter_chain && !p_vout->psz_filter_chain ) || ( psz_filter_chain && p_vout->psz_filter_chain && !strcmp( psz_filter_chain, p_vout->psz_filter_chain ) ) ) { p_vout->b_filter_change = VLC_FALSE; } if( psz_filter_chain ) free( psz_filter_chain ); } if( ( p_vout->render.i_width != i_width ) || ( p_vout->render.i_height != i_height ) || ( p_vout->render.i_chroma != i_chroma ) || ( p_vout->render.i_aspect != i_aspect && !p_vout->b_override_aspect ) || p_vout->b_filter_change ) { /* We are not interested in this format, close this vout */ vlc_object_detach( p_vout ); vlc_object_release( p_vout ); vout_Destroy( p_vout ); p_vout = NULL; } else { /* This video output is cool! Hijack it. */ vlc_object_detach( p_vout ); vlc_object_attach( p_vout, p_this ); vlc_object_release( p_vout ); } } if( !p_vout ) { msg_Dbg( p_this, "no usable vout present, spawning one" ); p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect ); } return p_vout; } /***************************************************************************** * vout_Create: creates a new video output thread ***************************************************************************** * This function creates a new video output thread, and returns a pointer * to its description. On error, it returns NULL. *****************************************************************************/ vout_thread_t * __vout_Create( vlc_object_t *p_parent, unsigned int i_width, unsigned int i_height, vlc_fourcc_t i_chroma, unsigned int i_aspect ) { vout_thread_t * p_vout; /* thread descriptor */ input_thread_t * p_input_thread; int i_index; /* loop variable */ char * psz_plugin; vlc_value_t val, text; /* Allocate descriptor */ p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT ); if( p_vout == NULL ) { msg_Err( p_parent, "out of memory" ); return NULL; } /* Initialize pictures and subpictures - translation tables and functions * will be initialized later in InitThread */ for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++) { p_vout->p_picture[i_index].pf_lock = NULL; p_vout->p_picture[i_index].pf_unlock = NULL; p_vout->p_picture[i_index].i_status = FREE_PICTURE; p_vout->p_picture[i_index].i_type = EMPTY_PICTURE; } for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++) { p_vout->p_subpicture[i_index].i_status = FREE_SUBPICTURE; p_vout->p_subpicture[i_index].i_type = EMPTY_SUBPICTURE; } /* No images in the heap */ p_vout->i_heap_size = 0; /* Initialize the rendering heap */ I_RENDERPICTURES = 0; p_vout->render.i_width = i_width; p_vout->render.i_height = i_height; p_vout->render.i_chroma = i_chroma; p_vout->render.i_aspect = i_aspect; p_vout->render.i_rmask = 0; p_vout->render.i_gmask = 0; p_vout->render.i_bmask = 0; p_vout->render.i_last_used_pic = -1; p_vout->render.b_allow_modify_pics = 1; /* Zero the output heap */ I_OUTPUTPICTURES = 0; p_vout->output.i_width = 0; p_vout->output.i_height = 0; p_vout->output.i_chroma = 0; p_vout->output.i_aspect = 0; p_vout->output.i_rmask = 0; p_vout->output.i_gmask = 0; p_vout->output.i_bmask = 0; /* Initialize misc stuff */ p_vout->i_changes = 0; p_vout->f_gamma = 0; p_vout->b_grayscale = 0; p_vout->b_info = 0; p_vout->b_interface = 0; p_vout->b_scale = 1; p_vout->b_fullscreen = 0; p_vout->i_alignment = 0; p_vout->render_time = 10; p_vout->c_fps_samples = 0; p_vout->b_filter_change = 0; /* Mouse coordinates */ var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER ); var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER ); var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER ); var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL ); var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER ); var_Create( p_vout, "intf-change", VLC_VAR_BOOL ); val.b_bool = VLC_TRUE; var_Set( p_vout, "intf-change", val ); /* Initialize locks */ vlc_mutex_init( p_vout, &p_vout->picture_lock ); vlc_mutex_init( p_vout, &p_vout->subpicture_lock ); vlc_mutex_init( p_vout, &p_vout->change_lock ); /* Attach the new object now so we can use var inheritance below */ vlc_object_attach( p_vout, p_parent ); /* Create a few object variables we'll need later on */ var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT ); var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT ); var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT ); var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT ); p_vout->b_override_aspect = VLC_FALSE; /* If the parent is not a VOUT object, that means we are at the start of * the video output pipe */ if( p_parent->i_object_type != VLC_OBJECT_VOUT ) { var_Get( p_vout, "aspect-ratio", &val ); /* Check whether the user tried to override aspect ratio */ if( val.psz_string ) { unsigned int i_new_aspect = i_aspect; char *psz_parser = strchr( val.psz_string, ':' ); if( psz_parser ) { *psz_parser++ = '\0'; i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR / atoi( psz_parser ); } else { i_new_aspect = i_width * VOUT_ASPECT_FACTOR * atof( val.psz_string ) / i_height; } free( val.psz_string ); if( i_new_aspect && i_new_aspect != i_aspect ) { int i_pgcd = ReduceHeight( i_new_aspect ); msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i", i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd ); p_vout->render.i_aspect = i_new_aspect; p_vout->b_override_aspect = VLC_TRUE; } } /* Look for the default filter configuration */ var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); var_Get( p_vout, "filter", &val ); p_vout->psz_filter_chain = val.psz_string; } else { /* continue the parent's filter chain */ char *psz_end; psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' ); if( psz_end && *(psz_end+1) ) p_vout->psz_filter_chain = strdup( psz_end+1 ); else p_vout->psz_filter_chain = NULL; } /* Choose the video output module */ if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain ) { var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); var_Get( p_vout, "vout", &val ); psz_plugin = val.psz_string; } else { /* the filter chain is a string list of filters separated by double * colons */ char *psz_end; psz_end = strchr( p_vout->psz_filter_chain, ':' ); if( psz_end ) psz_plugin = strndup( p_vout->psz_filter_chain, psz_end - p_vout->psz_filter_chain ); else psz_plugin = strdup( p_vout->psz_filter_chain ); } /* Initialize the dimensions of the video window */ InitWindowSize( p_vout, &p_vout->i_window_width, &p_vout->i_window_height ); /* Create the vout thread */ p_vout->p_module = module_Need( p_vout, ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ? "video filter" : "video output", psz_plugin ); if( psz_plugin ) free( psz_plugin ); if( p_vout->p_module == NULL ) { msg_Err( p_vout, "no suitable vout module" ); vlc_object_destroy( p_vout ); return NULL; } p_vout->p_text_renderer_module = module_Need( p_vout, "text renderer", NULL ); if( p_vout->p_text_renderer_module == NULL ) { msg_Warn( p_vout, "no suitable text renderer module" ); p_vout->pf_add_string = NULL; } /* Create a few object variables for interface interaction */ var_Create( p_vout, "fullscreen", VLC_VAR_BOOL ); text.psz_string = _("Fullscreen"); var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL ); var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL ); if( val.b_bool ) { /* user requested fullscreen */ p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE; } var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL ); var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE ); text.psz_string = _("Deinterlace"); var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL ); val.psz_string = ""; text.psz_string = _("Disable"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); val.psz_string = "discard"; text.psz_string = _("Discard"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); val.psz_string = "blend"; text.psz_string = _("Blend"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); val.psz_string = "mean"; text.psz_string = _("Mean"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); val.psz_string = "bob"; text.psz_string = _("Bob"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); val.psz_string = "linear"; text.psz_string = _("Linear"); var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text ); if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS ) { var_Set( p_vout, "deinterlace", val ); if( val.psz_string ) free( val.psz_string ); } var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL ); var_Create( p_vout, "filter", VLC_VAR_STRING ); text.psz_string = _("Filters"); var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL ); var_Change( p_vout, "filter", VLC_VAR_INHERITVALUE, &val, NULL ); if( val.psz_string ) { var_Set( p_vout, "filter", val ); free( val.psz_string ); } var_AddCallback( p_vout, "filter", FilterCallback, NULL ); /* Calculate delay created by internal caching */ p_input_thread = (input_thread_t *)vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_ANYWHERE ); if( p_input_thread ) { p_vout->i_pts_delay = p_input_thread->i_pts_delay; vlc_object_release( p_input_thread ); } else { p_vout->i_pts_delay = DEFAULT_PTS_DELAY; } if( vlc_thread_create( p_vout, "video output", RunThread, VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) ) { msg_Err( p_vout, "out of memory" ); module_Unneed( p_vout, p_vout->p_module ); vlc_object_destroy( p_vout ); return NULL; } return p_vout; } /***************************************************************************** * vout_Destroy: destroys a previously created video output ***************************************************************************** * Destroy a terminated thread. * The function will request a destruction of the specified thread. If pi_error * is NULL, it will return once the thread is destroyed. Else, it will be * update using one of the THREAD_* constants. *****************************************************************************/ void vout_Destroy( vout_thread_t *p_vout ) { vlc_object_t *p_playlist; /* Request thread destruction */ p_vout->b_die = VLC_TRUE; vlc_thread_join( p_vout ); var_Destroy( p_vout, "intf-change" ); p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE ); if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain ); /* Free structure */ vlc_object_destroy( p_vout ); /* If it was the last vout, tell the interface to show up */ if( p_playlist != NULL ) { vout_thread_t *p_another_vout = vlc_object_find( p_playlist, VLC_OBJECT_VOUT, FIND_ANYWHERE ); if( p_another_vout == NULL ) { vlc_value_t val; val.b_bool = VLC_TRUE; var_Set( p_playlist, "intf-show", val ); } else { vlc_object_release( p_another_vout ); } vlc_object_release( p_playlist ); } } /***************************************************************************** * InitThread: initialize video output thread ***************************************************************************** * This function is called from RunThread and performs the second step of the * initialization. It returns 0 on success. Note that the thread's flag are not * modified inside this function. *****************************************************************************/ static int InitThread( vout_thread_t *p_vout ) { int i, i_pgcd; vlc_mutex_lock( &p_vout->change_lock ); #ifdef STATS p_vout->c_loops = 0; #endif /* Initialize output method, it allocates direct buffers for us */ if( p_vout->pf_init( p_vout ) ) { vlc_mutex_unlock( &p_vout->change_lock ); return VLC_EGENERIC; } if( !I_OUTPUTPICTURES ) { msg_Err( p_vout, "plugin was unable to allocate at least " "one direct buffer" ); p_vout->pf_end( p_vout ); vlc_mutex_unlock( &p_vout->change_lock ); return VLC_EGENERIC; } if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES ) { msg_Err( p_vout, "plugin allocated too many direct buffers, " "our internal buffers must have overflown." ); p_vout->pf_end( p_vout ); vlc_mutex_unlock( &p_vout->change_lock ); return VLC_EGENERIC; } msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES ); #if 0 if( !p_vout->psz_filter_chain ) { char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" ); if( psz_aspect ) { int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR * atof( psz_aspect ) / p_vout->output.i_height; free( psz_aspect ); if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect ) { int i_pgcd = ReduceHeight( i_new_aspect ); msg_Dbg( p_vout, "output ratio forced to %i:%i\n", i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd ); p_vout->output.i_aspect = i_new_aspect; } } } #endif i_pgcd = ReduceHeight( p_vout->render.i_aspect ); msg_Dbg( p_vout, "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i", p_vout->render.i_width, p_vout->render.i_height, p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma, p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd ); i_pgcd = ReduceHeight( p_vout->output.i_aspect ); msg_Dbg( p_vout, "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i", p_vout->output.i_width, p_vout->output.i_height, p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma, p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd ); /* Calculate shifts from system-updated masks */ MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift, p_vout->output.i_rmask ); MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift, p_vout->output.i_gmask ); MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift, p_vout->output.i_bmask ); /* Check whether we managed to create direct buffers similar to * the render buffers, ie same size and chroma */ if( ( p_vout->output.i_width == p_vout->render.i_width ) && ( p_vout->output.i_height == p_vout->render.i_height ) && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) ) { /* Cool ! We have direct buffers, we can ask the decoder to * directly decode into them ! Map the first render buffers to * the first direct buffers, but keep the first direct buffer * for memcpy operations */ p_vout->b_direct = 1; for( i = 1; i < VOUT_MAX_PICTURES; i++ ) { if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE && I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 && p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE ) { /* We have enough direct buffers so there's no need to * try to use system memory buffers. */ break; } PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ]; I_RENDERPICTURES++; } msg_Dbg( p_vout, "direct render, mapping " "render pictures 0-%i to system pictures 1-%i", VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 ); } else { /* Rats... Something is wrong here, we could not find an output * plugin able to directly render what we decode. See if we can * find a chroma plugin to do the conversion */ p_vout->b_direct = 0; /* Choose the best module */ p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL ); if( p_vout->chroma.p_module == NULL ) { msg_Err( p_vout, "no chroma module for %4.4s to %4.4s", (char*)&p_vout->render.i_chroma, (char*)&p_vout->output.i_chroma ); p_vout->pf_end( p_vout ); vlc_mutex_unlock( &p_vout->change_lock ); return VLC_EGENERIC; } msg_Dbg( p_vout, "indirect render, mapping " "render pictures 0-%i to system pictures %i-%i", VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES, I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 ); /* Append render buffers after the direct buffers */ for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ ) { PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ]; I_RENDERPICTURES++; /* Check if we have enough render pictures */ if( I_RENDERPICTURES == VOUT_MAX_PICTURES ) break; } } /* Link pictures back to their heap */ for( i = 0 ; i < I_RENDERPICTURES ; i++ ) { PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render; } for( i = 0 ; i < I_OUTPUTPICTURES ; i++ ) { PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output; } /* XXX XXX mark thread ready */ return VLC_SUCCESS; } /***************************************************************************** * RunThread: video output thread ***************************************************************************** * Video output thread. This function does only returns when the thread is * terminated. It handles the pictures arriving in the video heap and the * display device events. *****************************************************************************/ static void RunThread( vout_thread_t *p_vout) { int i_index; /* index in heap */ int i_idle_loops = 0; /* loops without displaying a picture */ mtime_t current_date; /* current date */ mtime_t display_date; /* display date */ picture_t * p_picture; /* picture pointer */ picture_t * p_last_picture = NULL; /* last picture */ picture_t * p_directbuffer; /* direct buffer to display */ subpicture_t * p_subpic; /* subpicture pointer */ /* * Initialize thread */ p_vout->b_error = InitThread( p_vout ); /* signal the creation of the vout */ vlc_thread_ready( p_vout ); if( p_vout->b_error ) { /* Destroy thread structures allocated by Create and InitThread */ DestroyThread( p_vout ); return; } /* * Main loop - it is not executed if an error occured during * initialization */ while( (!p_vout->b_die) && (!p_vout->b_error) ) { /* Initialize loop variables */ p_picture = NULL; display_date = 0; current_date = mdate(); #if 0 p_vout->c_loops++; if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) ) { msg_Dbg( p_vout, "picture heap: %d/%d", I_RENDERPICTURES, p_vout->i_heap_size ); } #endif /* * Find the picture to display (the one with the earliest date). * This operation does not need lock, since only READY_PICTUREs * are handled. */ for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ ) { if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE) && ( (p_picture == NULL) || (PP_RENDERPICTURE[i_index]->date < display_date) ) ) { p_picture = PP_RENDERPICTURE[i_index]; display_date = p_picture->date; } } if( p_picture ) { /* If we met the last picture, parse again to see whether there is * a more appropriate one. */ if( p_picture == p_last_picture ) { for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ ) { if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE) && (PP_RENDERPICTURE[i_index] != p_last_picture) && ((p_picture == p_last_picture) || (PP_RENDERPICTURE[i_index]->date < display_date)) ) { p_picture = PP_RENDERPICTURE[i_index]; display_date = p_picture->date; } } } /* If we found better than the last picture, destroy it */ if( p_last_picture && p_picture != p_last_picture ) { vlc_mutex_lock( &p_vout->picture_lock ); if( p_last_picture->i_refcount ) { p_last_picture->i_status = DISPLAYED_PICTURE; } else { p_last_picture->i_status = DESTROYED_PICTURE; p_vout->i_heap_size--; } vlc_mutex_unlock( &p_vout->picture_lock ); p_last_picture = NULL; } /* Compute FPS rate */ p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date; if( !p_picture->b_force && p_picture != p_last_picture && display_date < current_date + p_vout->render_time ) { /* Picture is late: it will be destroyed and the thread * will directly choose the next picture */ vlc_mutex_lock( &p_vout->picture_lock ); if( p_picture->i_refcount ) { /* Pretend we displayed the picture, but don't destroy * it since the decoder might still need it. */ p_picture->i_status = DISPLAYED_PICTURE; } else { /* Destroy the picture without displaying it */ p_picture->i_status = DESTROYED_PICTURE; p_vout->i_heap_size--; } msg_Warn( p_vout, "late picture skipped ("I64Fd")", current_date - display_date ); vlc_mutex_unlock( &p_vout->picture_lock ); continue; } if( display_date > current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY ) { /* Picture is waaay too early: it will be destroyed */ vlc_mutex_lock( &p_vout->picture_lock ); if( p_picture->i_refcount ) { /* Pretend we displayed the picture, but don't destroy * it since the decoder might still need it. */ p_picture->i_status = DISPLAYED_PICTURE; } else { /* Destroy the picture without displaying it */ p_picture->i_status = DESTROYED_PICTURE; p_vout->i_heap_size--; } msg_Warn( p_vout, "vout warning: early picture skipped " "("I64Fd")", display_date - current_date - p_vout->i_pts_delay ); vlc_mutex_unlock( &p_vout->picture_lock ); continue; } if( display_date > current_date + VOUT_DISPLAY_DELAY ) { /* A picture is ready to be rendered, but its rendering date * is far from the current one so the thread will perform an * empty loop as if no picture were found. The picture state * is unchanged */ p_picture = NULL; display_date = 0; } else if( p_picture == p_last_picture ) { /* We are asked to repeat the previous picture, but we first * wait for a couple of idle loops */ if( i_idle_loops < 4 ) { p_picture = NULL; display_date = 0; } else { /* We set the display date to something high, otherwise * we'll have lots of problems with late pictures */ display_date = current_date + p_vout->render_time; } } } if( p_picture == NULL ) { i_idle_loops++; } /* * Check for subpictures to display */ p_subpic = vout_SortSubPictures( p_vout, display_date ); /* * Perform rendering */ p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic ); /* * Call the plugin-specific rendering method if there is one */ if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render ) { /* Render the direct buffer returned by vout_RenderPicture */ p_vout->pf_render( p_vout, p_directbuffer ); } /* * Sleep, wake up */ if( display_date != 0 && p_directbuffer != NULL ) { mtime_t current_render_time = mdate() - current_date; /* if render time is very large we don't include it in the mean */ if( current_render_time < p_vout->render_time + VOUT_DISPLAY_DELAY ) { /* Store render time using a sliding mean weighting to * current value in a 3 to 1 ratio*/ p_vout->render_time *= 3; p_vout->render_time += current_render_time; p_vout->render_time >>= 2; } } /* Give back change lock */ vlc_mutex_unlock( &p_vout->change_lock ); /* Sleep a while or until a given date */ if( display_date != 0 ) { /* If there are filters in the chain, better give them the picture * in advance */ if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain ) { mwait( display_date - VOUT_MWAIT_TOLERANCE ); } } else { msleep( VOUT_IDLE_SLEEP ); } /* On awakening, take back lock and send immediately picture * to display. */ vlc_mutex_lock( &p_vout->change_lock ); /* * Display the previously rendered picture */ if( p_picture != NULL && p_directbuffer != NULL ) { /* Display the direct buffer returned by vout_RenderPicture */ if( p_vout->pf_display ) { p_vout->pf_display( p_vout, p_directbuffer ); } /* Reinitialize idle loop count */ i_idle_loops = 0; /* Tell the vout this was the last picture and that it does not * need to be forced anymore. */ p_last_picture = p_picture; p_last_picture->b_force = 0; } /* * Check events and manage thread */ if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) ) { /* A fatal error occured, and the thread must terminate * immediately, without displaying anything - setting b_error to 1 * causes the immediate end of the main while() loop. */ p_vout->b_error = 1; } if( p_vout->i_changes & VOUT_SIZE_CHANGE ) { /* this must only happen when the vout plugin is incapable of * rescaling the picture itself. In this case we need to destroy * the current picture buffers and recreate new ones with the right * dimensions */ int i; p_vout->i_changes &= ~VOUT_SIZE_CHANGE; p_vout->pf_end( p_vout ); for( i = 0; i < I_OUTPUTPICTURES; i++ ) p_vout->p_picture[ i ].i_status = FREE_PICTURE; I_OUTPUTPICTURES = 0; if( p_vout->pf_init( p_vout ) ) { msg_Err( p_vout, "cannot resize display" ); /* FIXME: pf_end will be called again in EndThread() */ p_vout->b_error = 1; } /* Need to reinitialise the chroma plugin */ if( p_vout->chroma.p_module ) { if( p_vout->chroma.p_module->pf_deactivate ) p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) ); p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) ); } } } /* * Error loop - wait until the thread destruction is requested */ if( p_vout->b_error ) { ErrorThread( p_vout ); } /* End of thread */ EndThread( p_vout ); /* Destroy thread structures allocated by CreateThread */ DestroyThread( p_vout ); } /***************************************************************************** * ErrorThread: RunThread() error loop ***************************************************************************** * This function is called when an error occured during thread main's loop. The * thread can still receive feed, but must be ready to terminate as soon as * possible. *****************************************************************************/ static void ErrorThread( vout_thread_t *p_vout ) { /* Wait until a `die' order */ while( !p_vout->b_die ) { /* Sleep a while */ msleep( VOUT_IDLE_SLEEP ); } } /***************************************************************************** * EndThread: thread destruction ***************************************************************************** * This function is called when the thread ends after a sucessful * initialization. It frees all ressources allocated by InitThread. *****************************************************************************/ static void EndThread( vout_thread_t *p_vout ) { int i_index; /* index in heap */ #ifdef STATS { struct tms cpu_usage; times( &cpu_usage ); msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)", cpu_usage.tms_utime, cpu_usage.tms_stime ); } #endif if( !p_vout->b_direct ) { module_Unneed( p_vout, p_vout->chroma.p_module ); } /* Destroy all remaining pictures */ for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ ) { if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE ) { free( p_vout->p_picture[i_index].p_data_orig ); } } /* Destroy all remaining subpictures */ for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ ) { if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE ) { vout_DestroySubPicture( p_vout, &p_vout->p_subpicture[i_index] ); } } if( p_vout->p_text_renderer_module ) module_Unneed( p_vout, p_vout->p_text_renderer_module ); /* Destroy translation tables */ p_vout->pf_end( p_vout ); /* Release the change lock */ vlc_mutex_unlock( &p_vout->change_lock ); } /***************************************************************************** * DestroyThread: thread destruction ***************************************************************************** * This function is called when the thread ends. It frees all ressources * allocated by CreateThread. Status is available at this stage. *****************************************************************************/ static void DestroyThread( vout_thread_t *p_vout ) { /* Destroy the locks */ vlc_mutex_destroy( &p_vout->picture_lock ); vlc_mutex_destroy( &p_vout->subpicture_lock ); vlc_mutex_destroy( &p_vout->change_lock ); /* Release the module */ module_Unneed( p_vout, p_vout->p_module ); } /* following functions are local */ static int ReduceHeight( int i_ratio ) { int i_dummy = VOUT_ASPECT_FACTOR; int i_pgcd = 1; if( !i_ratio ) { return i_pgcd; } /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */ while( !(i_ratio & 1) && !(i_dummy & 1) ) { i_ratio >>= 1; i_dummy >>= 1; i_pgcd <<= 1; } while( !(i_ratio % 3) && !(i_dummy % 3) ) { i_ratio /= 3; i_dummy /= 3; i_pgcd *= 3; } while( !(i_ratio % 5) && !(i_dummy % 5) ) { i_ratio /= 5; i_dummy /= 5; i_pgcd *= 5; } return i_pgcd; } /***************************************************************************** * BinaryLog: computes the base 2 log of a binary value ***************************************************************************** * This functions is used by MaskToShift, to get a bit index from a binary * value. *****************************************************************************/ static int BinaryLog( uint32_t i ) { int i_log = 0; if( i == 0 ) return -31337; if( i & 0xffff0000 ) i_log += 16; if( i & 0xff00ff00 ) i_log += 8; if( i & 0xf0f0f0f0 ) i_log += 4; if( i & 0xcccccccc ) i_log += 2; if( i & 0xaaaaaaaa ) i_log += 1; return i_log; } /***************************************************************************** * MaskToShift: transform a color mask into right and left shifts ***************************************************************************** * This function is used for obtaining color shifts from masks. *****************************************************************************/ static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask ) { uint32_t i_low, i_high; /* lower hand higher bits of the mask */ if( !i_mask ) { *pi_left = *pi_right = 0; return; } /* Get bits */ i_low = i_mask & (- (int32_t)i_mask); /* lower bit of the mask */ i_high = i_mask + i_low; /* higher bit of the mask */ /* Transform bits into an index */ i_low = BinaryLog (i_low); i_high = BinaryLog (i_high); /* Update pointers and return */ *pi_left = i_low; *pi_right = (8 - i_high + i_low); } /***************************************************************************** * InitWindowSize: find the initial dimensions the video window should have. ***************************************************************************** * This function will check the "width", "height" and "zoom" config options and * will calculate the size that the video window should have. *****************************************************************************/ static void InitWindowSize( vout_thread_t *p_vout, int *pi_width, int *pi_height ) { vlc_value_t val; int i_width, i_height; uint64_t ll_zoom; #define FP_FACTOR 1000 /* our fixed point factor */ var_Get( p_vout, "align", &val ); p_vout->i_alignment = val.i_int; var_Get( p_vout, "width", &val ); i_width = val.i_int; var_Get( p_vout, "height", &val ); i_height = val.i_int; var_Get( p_vout, "zoom", &val ); ll_zoom = (uint64_t)( FP_FACTOR * val.f_float ); if( i_width > 0 && i_height > 0) { *pi_width = (int)( i_width * ll_zoom / FP_FACTOR ); *pi_height = (int)( i_height * ll_zoom / FP_FACTOR ); return; } else if( i_width > 0 ) { *pi_width = (int)( i_width * ll_zoom / FP_FACTOR ); *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR ); return; } else if( i_height > 0 ) { *pi_height = (int)( i_height * ll_zoom / FP_FACTOR ); *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR ); return; } if( p_vout->render.i_height * p_vout->render.i_aspect >= p_vout->render.i_width * VOUT_ASPECT_FACTOR ) { *pi_width = (int)( p_vout->render.i_height * ll_zoom * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR ); *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR ); } else { *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR ); *pi_height = (int)( p_vout->render.i_width * ll_zoom * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR ); } #undef FP_FACTOR } /***************************************************************************** * vout_VarCallback: generic callback for intf variables *****************************************************************************/ int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable, vlc_value_t old_value, vlc_value_t new_value, void * unused ) { vout_thread_t * p_vout = (vout_thread_t *)p_this; vlc_value_t val; val.b_bool = VLC_TRUE; var_Set( p_vout, "intf-change", val ); return VLC_SUCCESS; } /***************************************************************************** * object variables callbacks: a bunch of object variables are used by the * interfaces to interact with the vout. *****************************************************************************/ static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd, vlc_value_t oldval, vlc_value_t newval, void *p_data ) { vout_thread_t *p_vout = (vout_thread_t *)p_this; input_thread_t *p_input; vlc_value_t val; p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE; p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT ); if( p_input ) { /* Modify input as well because the vout might have to be restarted */ var_Create( p_input, "fullscreen", VLC_VAR_BOOL ); var_Set( p_input, "fullscreen", newval ); vlc_object_release( p_input ); } val.b_bool = VLC_TRUE; var_Set( p_vout, "intf-change", val ); return VLC_SUCCESS; } static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd, vlc_value_t oldval, vlc_value_t newval, void *p_data ) { vout_thread_t *p_vout = (vout_thread_t *)p_this; input_thread_t *p_input; vlc_value_t val; char *psz_mode = newval.psz_string; char *psz_filter; unsigned int i; psz_filter = config_GetPsz( p_vout, "filter" ); if( !psz_mode || !*psz_mode ) { config_PutPsz( p_vout, "filter", "" ); } else { if( !psz_filter || !*psz_filter ) { config_PutPsz( p_vout, "filter", "deinterlace" ); } else { if( strstr( psz_filter, "deinterlace" ) == NULL ) { psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 ); strcat( psz_filter, ",deinterlace" ); } config_PutPsz( p_vout, "filter", psz_filter ); } } if( psz_filter ) free( psz_filter ); p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT ); if( !p_input ) return VLC_EGENERIC; if( psz_mode && *psz_mode ) { val.psz_string = psz_mode; var_Set( p_vout, "deinterlace-mode", val ); /* Modify input as well because the vout might have to be restarted */ var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING ); var_Set( p_input, "deinterlace-mode", val ); } /* now restart all video streams */ vlc_mutex_lock( &p_input->stream.stream_lock ); p_vout->b_filter_change = VLC_TRUE; #define ES p_input->stream.pp_es[i] for( i = 0 ; i < p_input->stream.i_es_number ; i++ ) { if( ( ES->i_cat == VIDEO_ES ) && ES->p_dec != NULL ) { input_UnselectES( p_input, ES ); input_SelectES( p_input, ES ); } #undef ES } vlc_mutex_unlock( &p_input->stream.stream_lock ); vlc_object_release( p_input ); val.b_bool = VLC_TRUE; var_Set( p_vout, "intf-change", val ); return VLC_SUCCESS; } static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd, vlc_value_t oldval, vlc_value_t newval, void *p_data ) { vout_thread_t *p_vout = (vout_thread_t *)p_this; input_thread_t *p_input; vlc_value_t val; unsigned int i; p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT ); if (!p_input) { msg_Err( p_vout, "Input not found" ); return( VLC_EGENERIC ); } /* Restart the video stream */ vlc_mutex_lock( &p_input->stream.stream_lock ); p_vout->b_filter_change = VLC_TRUE; #define ES p_input->stream.pp_es[i] for( i = 0 ; i < p_input->stream.i_es_number ; i++ ) { if( ( ES->i_cat == VIDEO_ES ) && ES->p_dec != NULL ) { input_UnselectES( p_input, ES ); input_SelectES( p_input, ES ); } #undef ES } vlc_mutex_unlock( &p_input->stream.stream_lock ); vlc_object_release( p_input ); val.b_bool = VLC_TRUE; var_Set( p_vout, "intf-change", val ); return VLC_SUCCESS; }