1 /*****************************************************************************
2 * sdl_image.c: sdl decoder module making use of libsdl_image.
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_plugin.h>
33 #include <vlc_codec.h>
36 #include SDL_IMAGE_INCLUDE_FILE
38 /*****************************************************************************
39 * decoder_sys_t : sdl decoder descriptor
40 *****************************************************************************/
43 const char *psz_sdl_type;
46 /*****************************************************************************
48 *****************************************************************************/
49 static int OpenDecoder ( vlc_object_t * );
50 static void CloseDecoder ( vlc_object_t * );
52 static picture_t *DecodeBlock ( decoder_t *, block_t ** );
54 /*****************************************************************************
56 *****************************************************************************/
58 set_category( CAT_INPUT );
59 set_subcategory( SUBCAT_INPUT_VCODEC );
60 set_shortname( _("SDL Image decoder"));
61 set_description( _("SDL_image video decoder") );
62 set_capability( "decoder", 60 );
63 set_callbacks( OpenDecoder, CloseDecoder );
64 add_shortcut( "sdl_image" );
67 static const struct supported_fmt_t
69 vlc_fourcc_t i_fourcc;
70 const char *psz_sdl_type;
73 { VLC_FOURCC('t','g','a',' '), "TGA" },
74 { VLC_FOURCC('b','m','p',' '), "BMP" },
75 { VLC_FOURCC('p','n','m',' '), "PNM" },
76 { VLC_FOURCC('x','p','m',' '), "XPM" },
77 { VLC_FOURCC('x','c','f',' '), "XCF" },
78 { VLC_FOURCC('p','c','x',' '), "PCX" },
79 { VLC_FOURCC('g','i','f',' '), "GIF" },
80 { VLC_FOURCC('j','p','e','g'), "JPG" },
81 { VLC_FOURCC('t','i','f','f'), "TIF" },
82 { VLC_FOURCC('l','b','m',' '), "LBM" },
83 { VLC_FOURCC('p','n','g',' '), "PNG" }
86 /*****************************************************************************
87 * OpenDecoder: probe the decoder and return score
88 *****************************************************************************/
89 static int OpenDecoder( vlc_object_t *p_this )
91 decoder_t *p_dec = (decoder_t *)p_this;
97 i < (int)(sizeof(p_supported_fmt)/sizeof(struct supported_fmt_t));
100 if ( p_supported_fmt[i].i_fourcc == p_dec->fmt_in.i_codec )
103 if ( i == (int)(sizeof(p_supported_fmt)/sizeof(struct supported_fmt_t)) )
108 /* Allocate the memory needed to store the decoder's structure */
109 if( ( p_dec->p_sys = p_sys =
110 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
112 msg_Err( p_dec, "out of memory" );
115 p_sys->psz_sdl_type = p_supported_fmt[i].psz_sdl_type;
117 /* Set output properties - this is a decoy and isn't used anywhere */
118 p_dec->fmt_out.i_cat = VIDEO_ES;
119 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','3','2');
122 p_dec->pf_decode_video = DecodeBlock;
127 /****************************************************************************
128 * DecodeBlock: the whole thing
129 ****************************************************************************
130 * This function must be fed with a complete compressed frame.
131 ****************************************************************************/
132 static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
134 decoder_sys_t *p_sys = p_dec->p_sys;
136 picture_t *p_pic = NULL;
137 SDL_Surface *p_surface;
140 if( pp_block == NULL || *pp_block == NULL ) return NULL;
143 p_rw = SDL_RWFromConstMem( p_block->p_buffer, p_block->i_buffer );
145 /* Decode picture. */
146 p_surface = IMG_LoadTyped_RW( p_rw, 1, (char*)p_sys->psz_sdl_type );
147 if ( p_surface == NULL )
149 msg_Warn( p_dec, "SDL_image couldn't load the image (%s)",
154 switch ( p_surface->format->BitsPerPixel )
157 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','1','6');
161 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','2','4');
164 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','3','2');
167 msg_Warn( p_dec, "unknown bits/pixel format (%d)",
168 p_surface->format->BitsPerPixel );
171 p_dec->fmt_out.video.i_width = p_surface->w;
172 p_dec->fmt_out.video.i_height = p_surface->h;
173 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_surface->w
176 /* Get a new picture. */
177 p_pic = p_dec->pf_vout_buffer_new( p_dec );
178 if ( p_pic == NULL ) goto error;
180 switch ( p_surface->format->BitsPerPixel )
185 uint8_t *p_src, *p_dst;
187 for ( i = 0; i < p_surface->h; i++ )
189 p_src = (uint8_t*)p_surface->pixels + i * p_surface->pitch;
190 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
191 for ( j = 0; j < p_surface->w; j++ )
193 SDL_GetRGB( *(p_src++), p_surface->format,
205 uint8_t *p_src = p_surface->pixels;
206 uint8_t *p_dst = p_pic->p[0].p_pixels;
207 int i_pitch = p_pic->p[0].i_pitch < p_surface->pitch ?
208 p_pic->p[0].i_pitch : p_surface->pitch;
210 for ( i = 0; i < p_surface->h; i++ )
212 vlc_memcpy( p_dst, p_src, i_pitch );
213 p_src += p_surface->pitch;
214 p_dst += p_pic->p[0].i_pitch;
221 uint8_t *p_src, *p_dst;
223 for ( i = 0; i < p_surface->h; i++ )
225 p_src = (uint8_t*)p_surface->pixels + i * p_surface->pitch;
226 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
227 for ( j = 0; j < p_surface->w; j++ )
229 SDL_GetRGB( *(uint32_t*)p_src, p_surface->format,
242 uint8_t *p_src, *p_dst;
244 for ( i = 0; i < p_surface->h; i++ )
246 p_src = (uint8_t*)p_surface->pixels + i * p_surface->pitch;
247 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
248 for ( j = 0; j < p_surface->w; j++ )
250 SDL_GetRGBA( *(uint32_t*)p_src, p_surface->format,
263 SDL_FreeSurface( p_surface );
264 block_Release( p_block ); *pp_block = NULL;
268 if ( p_surface != NULL ) SDL_FreeSurface( p_surface );
269 block_Release( p_block ); *pp_block = NULL;
273 /*****************************************************************************
274 * CloseDecoder: sdl decoder destruction
275 *****************************************************************************/
276 static void CloseDecoder( vlc_object_t *p_this )
278 decoder_t *p_dec = (decoder_t *)p_this;
279 decoder_sys_t *p_sys = p_dec->p_sys;