+++ /dev/null
-/*****************************************************************************
- * invmem_decoder.c: memory video driver for vlc
- *****************************************************************************
- * Copyright (C) 2008 the VideoLAN team
- * $Id$
- *
- * Authors: Robert Paciorek <robert@opcode.eu.org> <http://opcode.eu.org/bercik>
- * based on:
- * - vmem video output module (Gildas Bazin <gbazin@videolan.org>)
- * - png video decodec module (Sam Hocevar <sam@zoy.org>)
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_codec.h>
-
-#include <vlc_image.h>
-#include <vlc_filter.h>
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int OpenDecoder ( vlc_object_t * );
-static void CloseDecoder ( vlc_object_t * );
-
-static picture_t *DecodeBlock ( decoder_t *, block_t ** );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-#define T_WIDTH N_( "Width" )
-#define LT_WIDTH N_( "Video memory buffer width." )
-
-#define T_HEIGHT N_( "Height" )
-#define LT_HEIGHT N_( "Video memory buffer height." )
-
-#define T_LOCK N_( "Lock function" )
-#define LT_LOCK N_( "Address of the locking callback function. This " \
- "function must return a valid memory address for use " \
- "by the video renderer." )
-
-#define T_UNLOCK N_( "Unlock function" )
-#define LT_UNLOCK N_( "Address of the unlocking callback function" )
-
-#define T_DATA N_( "Callback data" )
-#define LT_DATA N_( "Data for the locking and unlocking functions" )
-
-#define T_CHROMA N_("Chroma")
-#define LT_CHROMA N_("Output chroma for the memory image as a 4-character " \
- "string, eg. \"RV32\".")
-
-vlc_module_begin()
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_VCODEC )
- set_shortname( N_("Memory video decoder") )
- set_description( N_("Memory video decoder") )
- set_capability( "decoder", 50 )
- set_callbacks( OpenDecoder, CloseDecoder )
- add_shortcut( "invmem" )
-
- add_integer( "invmem-width", 0, T_WIDTH, LT_WIDTH, false )
- add_integer( "invmem-height", 0, T_HEIGHT, LT_HEIGHT, false )
- add_string( "invmem-lock", "0", T_LOCK, LT_LOCK, true )
- add_string( "invmem-unlock", "0", T_UNLOCK, LT_UNLOCK, true )
- add_string( "invmem-data", "0", T_DATA, LT_DATA, true )
- add_string( "invmem-chroma", "RV24", T_CHROMA, LT_CHROMA, true)
-vlc_module_end()
-
-
-struct decoder_sys_t
-{
- void * (*pf_lock) (void *);
- void (*pf_unlock) (void *);
- void *p_data;
-
- int i_width;
- int i_height;
- int i_pitch;
-
- vlc_fourcc_t i_chroma;
-};
-
-
-/*****************************************************************************
- * OpenDecoder: probe the decoder and return score
- *****************************************************************************/
-static int OpenDecoder( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t*)p_this;
- decoder_sys_t *p_sys;
- char *psz_tmp;
- int pitch;
-
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('f','a','k','e'))
- {
- return VLC_EGENERIC;
- }
-
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys = malloc(sizeof(decoder_sys_t)) ) == NULL )
- return VLC_ENOMEM;
-
- // get parameters
- char* chromaStr = var_CreateGetString( p_dec, "invmem-chroma" );
- p_sys->i_width = var_CreateGetInteger( p_this, "invmem-width" );
- p_sys->i_height = var_CreateGetInteger( p_this, "invmem-height" );
- if( p_sys->i_width == 0 || p_sys->i_height == 0 )
- {
- msg_Err( p_dec, "--invmem-width and --invmem-height must be > 0" );
- goto error;
- }
-
- psz_tmp = var_CreateGetString( p_dec, "invmem-lock" );
- p_sys->pf_lock = (void * (*) (void *))(intptr_t)atoll( psz_tmp );
- free( psz_tmp );
-
- psz_tmp = var_CreateGetString( p_dec, "invmem-unlock" );
- p_sys->pf_unlock = (void (*) (void *))(intptr_t)atoll( psz_tmp );
- free( psz_tmp );
-
- psz_tmp = var_CreateGetString( p_dec, "invmem-data" );
- p_sys->p_data = (void *)(intptr_t)atoll( psz_tmp );
- free( psz_tmp );
-
- if( !p_sys->pf_lock || !p_sys->pf_unlock )
- {
- msg_Err( p_dec, "Invalid lock or unlock callbacks" );
- goto error;
- }
-
- if ( chromaStr == NULL )
- {
- msg_Err( p_dec, "Invalid invmem-chroma string." );
- goto error;
- }
- const vlc_fourcc_t chroma = vlc_fourcc_GetCodecFromString( VIDEO_ES, chromaStr );
-
- if ( !chroma )
- {
- msg_Err( p_dec, "invmem-chroma should be 4 characters long." );
- goto error;
- }
-
- /* Set output properties */
- switch (chroma)
- {
- case VLC_CODEC_RGB15:
- p_dec->fmt_out.video.i_rmask = 0x001f;
- p_dec->fmt_out.video.i_gmask = 0x03e0;
- p_dec->fmt_out.video.i_bmask = 0x7c00;
- pitch = p_sys->i_width * 2;
- break;
- case VLC_CODEC_RGB16:
- p_dec->fmt_out.video.i_rmask = 0x001f;
- p_dec->fmt_out.video.i_gmask = 0x07e0;
- p_dec->fmt_out.video.i_bmask = 0xf800;
- pitch = p_sys->i_width * 2;
- break;
- case VLC_CODEC_RGB24:
- p_dec->fmt_out.video.i_rmask = 0xff0000;
- p_dec->fmt_out.video.i_gmask = 0x00ff00;
- p_dec->fmt_out.video.i_bmask = 0x0000ff;
- pitch = p_sys->i_width * 3;
- break;
- case VLC_CODEC_RGB32:
- p_dec->fmt_out.video.i_rmask = 0xff0000;
- p_dec->fmt_out.video.i_gmask = 0x00ff00;
- p_dec->fmt_out.video.i_bmask = 0x0000ff;
- pitch = p_sys->i_width * 4;
- break;
- default:
- p_dec->fmt_out.video.i_rmask = 0;
- p_dec->fmt_out.video.i_gmask = 0;
- p_dec->fmt_out.video.i_bmask = 0;
- pitch = 0;
- msg_Warn( p_dec, "Unknown chroma %s", chromaStr );
- goto error;
- }
-
- free( chromaStr );
-
- p_dec->fmt_out.i_codec = chroma;
- p_dec->fmt_out.video.i_width = p_dec->p_sys->i_width;
- p_dec->fmt_out.video.i_height = p_dec->p_sys->i_height;
- p_dec->fmt_out.video.i_sar_num = 1;
- p_dec->fmt_out.video.i_sar_den = 1;
- p_dec->fmt_out.i_cat = VIDEO_ES;
-
- p_sys->i_pitch = pitch;
-
- /* Set callbacks */
- p_dec->pf_decode_video = DecodeBlock;
-
- return VLC_SUCCESS;
-error:
- free( p_sys );
- free( chromaStr );
- return VLC_EGENERIC;
-}
-
-/****************************************************************************
- * DecodeBlock: the whole thing
- ****************************************************************************
- * This function must be fed with a complete compressed frame.
- ****************************************************************************/
-static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
-{
- decoder_sys_t *p_sys = p_dec->p_sys;
- block_t *p_block;
- picture_t* p_pic;
-
- if( !pp_block || !*pp_block ) return NULL;
-
- p_block = *pp_block;
-
- // create new picture
- p_pic = decoder_NewPicture( p_dec );
- if ( !p_pic ) return NULL;
- p_pic->b_force = true;
- p_pic->p->i_pitch = p_dec->p_sys->i_pitch;
- p_pic->date = p_block->i_pts > VLC_TS_INVALID ? p_block->i_pts : p_block->i_dts;
-
- // lock input and copy to picture
- p_pic->p->p_pixels = p_sys->pf_lock( p_dec->p_sys->p_data );
-
- // unlock input
- p_sys->pf_unlock( p_dec->p_sys->p_data );
-
- block_Release( *pp_block ); *pp_block = NULL;
- return p_pic;
-}
-
-/*****************************************************************************
- * CloseDecoder: invmem decoder destruction
- *****************************************************************************/
-static void CloseDecoder( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t *)p_this;
- decoder_sys_t *p_sys = p_dec->p_sys;
-
- free( p_sys );
-}
projects / vlc / commitdiff