X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fvideo_output%2Fsnapshot.c;h=fb0b9cf7ce124ac4c7a73e687e5502b619bc54c2;hb=9d65e77152039fcb91ff55e8a590bafc17f642c0;hp=ae734a93f26d84ddf370d09254b260d36fd6debd;hpb=05b1d21700d6417e2ffa1e392eb79f921e7c8adf;p=vlc diff --git a/modules/video_output/snapshot.c b/modules/video_output/snapshot.c index ae734a93f2..fb0b9cf7ce 100644 --- a/modules/video_output/snapshot.c +++ b/modules/video_output/snapshot.c @@ -1,16 +1,16 @@ /***************************************************************************** * snapshot.c : snapshot plugin for vlc ***************************************************************************** - * Copyright (C) 2002 VideoLAN - * $Id: snapshot.c,v 1.5 2004/01/30 11:26:20 oaubert Exp $ + * Copyright (C) 2002 the VideoLAN team + * $Id$ * * Authors: Olivier Aubert - * + * * 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 @@ -18,18 +18,36 @@ * * 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. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. + *****************************************************************************/ + +/***************************************************************************** + * This module is a pseudo video output that offers the possibility to + * keep a cache of low-res snapshots. + * The snapshot structure is defined in include/snapshot.h + * In order to access the current snapshot cache, object variables are used: + * snapshot-list-pointer : the pointer on the first element in the list + * snapshot-datasize : size of a snapshot + * (also available in snapshot_t->i_datasize) + * snapshot-cache-size : size of the cache list + * + * It is used for the moment by the CORBA module and a specialized + * python-vlc binding. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ -#include -#include -#include -#include -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include /***************************************************************************** * Local prototypes @@ -38,33 +56,39 @@ static int Create ( vlc_object_t * ); static void Destroy ( vlc_object_t * ); static int Init ( vout_thread_t * ); +static void End ( vout_thread_t * ); static void Display ( vout_thread_t *, picture_t * ); /***************************************************************************** * Module descriptor *****************************************************************************/ -#define WIDTH_TEXT N_("snapshot width") -#define WIDTH_LONGTEXT N_("Set the width of the snapshot image") +#define WIDTH_TEXT N_( "Snapshot width" ) +#define WIDTH_LONGTEXT N_( "Width of the snapshot image." ) + +#define HEIGHT_TEXT N_( "Snapshot height" ) +#define HEIGHT_LONGTEXT N_( "Height of the snapshot image." ) -#define HEIGHT_TEXT N_("snapshot height") -#define HEIGHT_LONGTEXT N_("Set the height of the snapshot image") +#define CHROMA_TEXT N_( "Chroma" ) +#define CHROMA_LONGTEXT N_( "Output chroma for the snapshot image " \ + "(a 4 character string, like \"RV32\")." ) -#define CHROMA_TEXT N_("chroma") -#define CHROMA_LONGTEXT N_("Set the desired chroma for the snapshot image (a 4 character string)") +#define CACHE_TEXT N_( "Cache size (number of images)" ) +#define CACHE_LONGTEXT N_( "Snapshot cache size (number of images to keep)." ) -#define CACHE_TEXT N_("cache size (number of images)") -#define CACHE_LONGTEXT N_("Set the cache size (number of images to keep)") +vlc_module_begin( ); + set_description( N_( "Snapshot module" ) ); + set_shortname( N_("Snapshot") ); -vlc_module_begin(); - set_description( _("snapshot module") ); - set_capability( "video output", 0 ); + set_category( CAT_VIDEO ); + set_subcategory( SUBCAT_VIDEO_VOUT ); + set_capability( "video output", 1 ); + + add_integer( "snapshot-width", 320, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, false ); + add_integer( "snapshot-height", 200, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT, false ); + add_string( "snapshot-chroma", "RV32", NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true ); + add_integer( "snapshot-cache-size", 50, NULL, CACHE_TEXT, CACHE_LONGTEXT, true ); - add_integer( "snapshot-width", 320, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, VLC_FALSE ); - add_integer( "snapshot-height", 200, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT, VLC_FALSE ); - add_string ( "snapshot-chroma", "RV32", NULL, CHROMA_TEXT, CHROMA_LONGTEXT, VLC_TRUE ); - add_integer( "snapshot-cache-size", 50, NULL, CACHE_TEXT, CACHE_LONGTEXT, VLC_TRUE ); - set_callbacks( Create, Destroy ); vlc_module_end(); @@ -73,11 +97,11 @@ vlc_module_end(); *****************************************************************************/ struct vout_sys_t { - snapshot_t **p_list; /* List of available snapshots */ - int i_index; /* Index of the next available list member */ - int i_size; /* Size of the cache */ - int i_datasize; /* Size of an image */ - input_thread_t * p_input; /* The input thread */ + snapshot_t **p_list; /* List of available snapshots */ + int i_index; /* Index of the next available list member */ + int i_size; /* Size of the cache */ + int i_datasize; /* Size of an image */ + input_thread_t *p_input; /* The input thread */ }; /***************************************************************************** @@ -87,21 +111,21 @@ struct vout_sys_t *****************************************************************************/ static int Create( vlc_object_t *p_this ) { - vout_thread_t *p_vout = (vout_thread_t *)p_this; + vout_thread_t *p_vout = ( vout_thread_t * )p_this; /* Allocate instance and initialize some members */ p_vout->p_sys = malloc( sizeof( vout_sys_t ) ); - if(! p_vout->p_sys) + if( ! p_vout->p_sys ) return VLC_ENOMEM; - var_Create (p_this, "snapshot-width", VLC_VAR_INTEGER); - var_Create (p_this, "snapshot-height", VLC_VAR_INTEGER); - var_Create (p_this, "snapshot-datasize", VLC_VAR_INTEGER); - var_Create (p_this, "snapshot-cache-size", VLC_VAR_INTEGER); - var_Create (p_this, "snapshot-list-pointer", VLC_VAR_ADDRESS); + var_Create( p_vout, "snapshot-width", VLC_VAR_INTEGER ); + var_Create( p_vout, "snapshot-height", VLC_VAR_INTEGER ); + var_Create( p_vout, "snapshot-datasize", VLC_VAR_INTEGER ); + var_Create( p_vout, "snapshot-cache-size", VLC_VAR_INTEGER ); + var_Create( p_vout, "snapshot-list-pointer", VLC_VAR_ADDRESS ); p_vout->pf_init = Init; - p_vout->pf_end = NULL; + p_vout->pf_end = End; p_vout->pf_manage = NULL; p_vout->pf_render = NULL; p_vout->pf_display = Display; @@ -116,7 +140,7 @@ static int Init( vout_thread_t *p_vout ) { int i_index; picture_t *p_pic; - vlc_value_t val; + vlc_value_t val; char* psz_chroma; int i_chroma; int i_width; @@ -125,27 +149,24 @@ static int Init( vout_thread_t *p_vout ) i_width = config_GetInt( p_vout, "snapshot-width" ); i_height = config_GetInt( p_vout, "snapshot-height" ); - + psz_chroma = config_GetPsz( p_vout, "snapshot-chroma" ); - if (psz_chroma) - { - if (strlen (psz_chroma) < 4) - { - msg_Err(p_vout, - "snapshot-chroma should be 4 characters long.\n"); - return VLC_EGENERIC; - } - i_chroma = VLC_FOURCC (psz_chroma[0], - psz_chroma[1], - psz_chroma[2], - psz_chroma[3]); - free (psz_chroma); - } + if( psz_chroma ) + { + if( strlen( psz_chroma ) < 4 ) + { + msg_Err( p_vout, "snapshot-chroma should be 4 characters long" ); + return VLC_EGENERIC; + } + i_chroma = VLC_FOURCC( psz_chroma[0], psz_chroma[1], + psz_chroma[2], psz_chroma[3] ); + free( psz_chroma ); + } else - { - msg_Err (p_vout, "Cannot find chroma information.\n"); - return VLC_EGENERIC; - } + { + msg_Err( p_vout, "Cannot find chroma information." ); + return VLC_EGENERIC; + } I_OUTPUTPICTURES = 0; @@ -160,31 +181,31 @@ static int Init( vout_thread_t *p_vout ) /* Define the bitmasks */ switch( i_chroma ) - { - case VLC_FOURCC('R','V','1','5'): - p_vout->output.i_rmask = 0x001f; - p_vout->output.i_gmask = 0x03e0; - p_vout->output.i_bmask = 0x7c00; - break; - - case VLC_FOURCC('R','V','1','6'): - p_vout->output.i_rmask = 0x001f; - p_vout->output.i_gmask = 0x07e0; - p_vout->output.i_bmask = 0xf800; - break; - - case VLC_FOURCC('R','V','2','4'): - p_vout->output.i_rmask = 0xff0000; - p_vout->output.i_gmask = 0x00ff00; - p_vout->output.i_bmask = 0x0000ff; - break; - - case VLC_FOURCC('R','V','3','2'): - p_vout->output.i_rmask = 0xff0000; - p_vout->output.i_gmask = 0x00ff00; - p_vout->output.i_bmask = 0x0000ff; - break; - } + { + case VLC_FOURCC( 'R','V','1','5' ): + p_vout->output.i_rmask = 0x001f; + p_vout->output.i_gmask = 0x03e0; + p_vout->output.i_bmask = 0x7c00; + break; + + case VLC_FOURCC( 'R','V','1','6' ): + p_vout->output.i_rmask = 0x001f; + p_vout->output.i_gmask = 0x07e0; + p_vout->output.i_bmask = 0xf800; + break; + + case VLC_FOURCC( 'R','V','2','4' ): + p_vout->output.i_rmask = 0xff0000; + p_vout->output.i_gmask = 0x00ff00; + p_vout->output.i_bmask = 0x0000ff; + break; + + case VLC_FOURCC( 'R','V','3','2' ): + p_vout->output.i_rmask = 0xff0000; + p_vout->output.i_gmask = 0x00ff00; + p_vout->output.i_bmask = 0x0000ff; + break; + } /* Try to initialize 1 direct buffer */ p_pic = NULL; @@ -198,14 +219,14 @@ static int Init( vout_thread_t *p_vout ) break; } } - + /* Allocate the picture */ if( p_pic == NULL ) { return VLC_SUCCESS; } - vout_AllocatePicture( p_vout, p_pic, p_vout->output.i_chroma, + vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma, p_vout->output.i_width, p_vout->output.i_height, p_vout->output.i_aspect ); @@ -229,74 +250,83 @@ static int Init( vout_thread_t *p_vout ) p_vout->p_sys->i_index = 0; p_vout->p_sys->i_size = config_GetInt( p_vout, "snapshot-cache-size" ); - if (p_vout->p_sys->i_size < 2) - { - msg_Err (p_vout, "snapshot-cache-size must be at least 1."); - return VLC_EGENERIC; - } + if( p_vout->p_sys->i_size < 2 ) + { + msg_Err( p_vout, "snapshot-cache-size must be at least 1." ); + return VLC_EGENERIC; + } - p_vout->p_sys->p_list = (snapshot_t **)malloc (p_vout->p_sys->i_size * sizeof (snapshot_t *)); + p_vout->p_sys->p_list = malloc( p_vout->p_sys->i_size * sizeof( snapshot_t * ) ); if( p_vout->p_sys->p_list == NULL ) - return VLC_ENOMEM; + return VLC_ENOMEM; /* Initialize the structures for the circular buffer */ - for (i_index = 0 ; i_index < p_vout->p_sys->i_size ; i_index++) - { - snapshot_t *p_snapshot; - p_snapshot = (snapshot_t *)malloc (sizeof (snapshot_t)); - - if( p_snapshot == NULL ) - return VLC_ENOMEM; - - p_snapshot->i_width = i_width; - p_snapshot->i_height = i_height; - p_snapshot->i_datasize = i_datasize; - p_snapshot->date = 0; - p_snapshot->p_data = (char*) malloc (i_datasize); - if( p_snapshot->p_data == NULL ) - return VLC_ENOMEM; - p_vout->p_sys->p_list[i_index] = p_snapshot; - } + for( i_index = 0; i_index < p_vout->p_sys->i_size; i_index++ ) + { + snapshot_t *p_snapshot = malloc( sizeof( snapshot_t ) ); + + if( p_snapshot == NULL ) + return VLC_ENOMEM; + + p_snapshot->i_width = i_width; + p_snapshot->i_height = i_height; + p_snapshot->i_datasize = i_datasize; + p_snapshot->date = 0; + p_snapshot->p_data = ( char* ) malloc( i_datasize ); + if( p_snapshot->p_data == NULL ) + return VLC_ENOMEM; + p_vout->p_sys->p_list[i_index] = p_snapshot; + } val.i_int = i_width; - var_Set (p_vout, "snapshot-width", val); + var_Set( p_vout, "snapshot-width", val ); val.i_int = i_height; - var_Set (p_vout, "snapshot-height", val); + var_Set( p_vout, "snapshot-height", val ); val.i_int = i_datasize; - var_Set (p_vout, "snapshot-datasize", val); + var_Set( p_vout, "snapshot-datasize", val ); val.i_int = p_vout->p_sys->i_size; - var_Set (p_vout, "snapshot-cache-size", val); + var_Set( p_vout, "snapshot-cache-size", val ); val.p_address = p_vout->p_sys->p_list; - var_Set (p_vout, "snapshot-list-pointer", val); + var_Set( p_vout, "snapshot-list-pointer", val ); /* Get the p_input pointer (to access video times) */ p_vout->p_sys->p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, - FIND_PARENT ); - - if (! p_vout->p_sys->p_input) - return VLC_ENOOBJ; + FIND_PARENT ); - if (var_Create (p_vout->p_sys->p_input, "snapshot-id", VLC_VAR_INTEGER) != VLC_SUCCESS) - { - msg_Err (p_vout, "Cannot create snapshot-id variable in p_input (%d).", p_vout->p_sys->p_input->i_object_id); - return VLC_EGENERIC; - } + if( !p_vout->p_sys->p_input ) + return VLC_ENOOBJ; + + if( var_Create( p_vout->p_sys->p_input, "snapshot-id", VLC_VAR_INTEGER ) ) + { + msg_Err( p_vout, "Cannot create snapshot-id variable in p_input (%d).", + p_vout->p_sys->p_input->i_object_id ); + return VLC_EGENERIC; + } /* Register the snapshot vout module at the input level */ val.i_int = p_vout->i_object_id; - if (var_Set (p_vout->p_sys->p_input, "snapshot-id", val) != VLC_SUCCESS) - { - msg_Err (p_vout, "Cannot register snapshot-id in p_input (%d).", p_vout->p_sys->p_input->i_object_id); - return VLC_EGENERIC; - } + if( var_Set( p_vout->p_sys->p_input, "snapshot-id", val ) ) + { + msg_Err( p_vout, "Cannot register snapshot-id in p_input (%d).", + p_vout->p_sys->p_input->i_object_id ); + return VLC_EGENERIC; + } return VLC_SUCCESS; } +/***************************************************************************** + * End: terminate video thread output method + *****************************************************************************/ +static void End( vout_thread_t *p_vout ) +{ + (void)p_vout; +} + /***************************************************************************** * Destroy: destroy video thread ***************************************************************************** @@ -304,60 +334,41 @@ static int Init( vout_thread_t *p_vout ) *****************************************************************************/ static void Destroy( vlc_object_t *p_this ) { - vout_thread_t *p_vout = (vout_thread_t *)p_this; - vlc_object_t *p_vlc; - int i_index; - - fprintf (stderr, "Destroying snapshot module\n"); - vlc_object_release(p_vout->p_sys->p_input); - var_Destroy (p_this, "snapshot-width"); - var_Destroy (p_this, "snapshot-height"); - var_Destroy (p_this, "snapshot-datasize"); - - p_vlc = vlc_object_find(p_this, VLC_OBJECT_ROOT, FIND_PARENT); - if (p_vlc) - { - /* UnRegister the snapshot vout module at the root level */ - /* var_Destroy (p_vlc, "snapshot-id"); */ - var_Destroy (p_this->p_libvlc, "snapshot-id"); - vlc_object_release(p_vlc); - } + vout_thread_t *p_vout = ( vout_thread_t * )p_this; + int i_index; + + var_Destroy( p_vout->p_sys->p_input, "snapshot-id" ); + + vlc_object_release( p_vout->p_sys->p_input ); + var_Destroy( p_this, "snapshot-width" ); + var_Destroy( p_this, "snapshot-height" ); + var_Destroy( p_this, "snapshot-datasize" ); - for (i_index = 0 ; i_index < p_vout->p_sys->i_size ; i_index++) + for( i_index = 0 ; i_index < p_vout->p_sys->i_size ; i_index++ ) { - free (p_vout->p_sys->p_list[i_index]->p_data); + free( p_vout->p_sys->p_list[ i_index ]->p_data ); } - free (p_vout->p_sys->p_list); - /* Destroy structure */ - free( p_vout->p_sys ); + free( p_vout->p_sys->p_list ); + /* Destroy structure */ + free( p_vout->p_sys ); } /* Return the position in ms from the start of the movie */ -mtime_t get_movietime(vout_thread_t *p_vout) +static mtime_t snapshot_GetMovietime( vout_thread_t *p_vout ) { - input_thread_t* p_input; - vlc_value_t val; - mtime_t result; + input_thread_t* p_input; + vlc_value_t val; + mtime_t i_result; - p_input = p_vout->p_sys->p_input; - if (! p_input) - return 0; + p_input = p_vout->p_sys->p_input; + if( !p_input ) + return 0; - var_Get( p_input, "time", &val ); + var_Get( p_input, "time", &val ); - result = val.i_time; + i_result = val.i_time - p_input->i_pts_delay; - if (result == 0) - { - /* Either we are at the start, or (more probably) the demuxer - does not support the DEMUX_GET_TIME call. Try to fallback to - another method. */ - stream_position_t pos; - - input_Tell (p_input, &pos); - result = pos.i_mux_rate * 50 * pos.i_tell; - } - return (result / 1000); + return( i_result / 1000 ); } /***************************************************************************** @@ -367,28 +378,25 @@ mtime_t get_movietime(vout_thread_t *p_vout) *****************************************************************************/ static void Display( vout_thread_t *p_vout, picture_t *p_pic ) { - int i_index; - mtime_t date; - - i_index = p_vout->p_sys->i_index; - - p_vout->p_vlc->pf_memcpy( - p_vout->p_sys->p_list[i_index]->p_data, - p_pic->p->p_pixels, - p_vout->p_sys->i_datasize); - - date = get_movietime(p_vout); - - p_vout->p_sys->p_list[i_index]->date = date; - - i_index++; - - if (i_index >= p_vout->p_sys->i_size) - { - i_index = 0; - } - - p_vout->p_sys->i_index = i_index; - - return; + int i_index; + mtime_t i_date; + + i_index = p_vout->p_sys->i_index; + + vlc_memcpy( p_vout->p_sys->p_list[i_index]->p_data, p_pic->p->p_pixels, + p_vout->p_sys->i_datasize ); + + i_date = snapshot_GetMovietime( p_vout ); + + p_vout->p_sys->p_list[i_index]->date = i_date; + + i_index++; + + if( i_index >= p_vout->p_sys->i_size ) + { + i_index = 0; + } + + p_vout->p_sys->i_index = i_index; } +