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 *****************************************************************************/
28 #include <vlc_codec.h>
31 #include SDL_IMAGE_INCLUDE_FILE
33 /*****************************************************************************
34 * decoder_sys_t : sdl decoder descriptor
35 *****************************************************************************/
38 const char *psz_sdl_type;
41 /*****************************************************************************
43 *****************************************************************************/
44 static int OpenDecoder ( vlc_object_t * );
45 static void CloseDecoder ( vlc_object_t * );
47 static picture_t *DecodeBlock ( decoder_t *, block_t ** );
49 /*****************************************************************************
51 *****************************************************************************/
53 set_category( CAT_INPUT );
54 set_subcategory( SUBCAT_INPUT_VCODEC );
55 set_description( _("SDL_image video decoder") );
56 set_capability( "decoder", 60 );
57 set_callbacks( OpenDecoder, CloseDecoder );
58 add_shortcut( "sdl_image" );
61 static const struct supported_fmt_t
63 vlc_fourcc_t i_fourcc;
64 const char *psz_sdl_type;
67 { VLC_FOURCC('t','g','a',' '), "TGA" },
68 { VLC_FOURCC('b','m','p',' '), "BMP" },
69 { VLC_FOURCC('p','n','m',' '), "PNM" },
70 { VLC_FOURCC('x','p','m',' '), "XPM" },
71 { VLC_FOURCC('x','c','f',' '), "XCF" },
72 { VLC_FOURCC('p','c','x',' '), "PCX" },
73 { VLC_FOURCC('g','i','f',' '), "GIF" },
74 { VLC_FOURCC('j','p','e','g'), "JPG" },
75 { VLC_FOURCC('t','i','f','f'), "TIF" },
76 { VLC_FOURCC('l','b','m',' '), "LBM" },
77 { VLC_FOURCC('p','n','g',' '), "PNG" }
80 /*****************************************************************************
81 * OpenDecoder: probe the decoder and return score
82 *****************************************************************************/
83 static int OpenDecoder( vlc_object_t *p_this )
85 decoder_t *p_dec = (decoder_t *)p_this;
91 i < (int)(sizeof(p_supported_fmt)/sizeof(struct supported_fmt_t));
94 if ( p_supported_fmt[i].i_fourcc == p_dec->fmt_in.i_codec )
97 if ( i == (int)(sizeof(p_supported_fmt)/sizeof(struct supported_fmt_t)) )
102 /* Allocate the memory needed to store the decoder's structure */
103 if( ( p_dec->p_sys = p_sys =
104 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
106 msg_Err( p_dec, "out of memory" );
109 p_sys->psz_sdl_type = p_supported_fmt[i].psz_sdl_type;
111 /* Set output properties - this is a decoy and isn't used anywhere */
112 p_dec->fmt_out.i_cat = VIDEO_ES;
113 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','3','2');
116 p_dec->pf_decode_video = DecodeBlock;
121 /****************************************************************************
122 * DecodeBlock: the whole thing
123 ****************************************************************************
124 * This function must be fed with a complete compressed frame.
125 ****************************************************************************/
126 static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
128 decoder_sys_t *p_sys = p_dec->p_sys;
130 picture_t *p_pic = NULL;
131 SDL_Surface *p_surface;
134 if( pp_block == NULL || *pp_block == NULL ) return NULL;
137 p_rw = SDL_RWFromConstMem( p_block->p_buffer, p_block->i_buffer );
139 /* Decode picture. */
140 p_surface = IMG_LoadTyped_RW( p_rw, 1, (char*)p_sys->psz_sdl_type );
141 if ( p_surface == NULL )
143 msg_Warn( p_dec, "SDL_image couldn't load the image (%s)",
148 switch ( p_surface->format->BitsPerPixel )
151 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','1','6');
155 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','2','4');
158 p_dec->fmt_out.i_codec = VLC_FOURCC('R','V','3','2');
161 msg_Warn( p_dec, "unknown bits/pixel format (%d)",
162 p_surface->format->BitsPerPixel );
165 p_dec->fmt_out.video.i_width = p_surface->w;
166 p_dec->fmt_out.video.i_height = p_surface->h;
167 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_surface->w
170 /* Get a new picture. */
171 p_pic = p_dec->pf_vout_buffer_new( p_dec );
172 if ( p_pic == NULL ) goto error;
174 switch ( p_surface->format->BitsPerPixel )
179 uint8_t *p_src, *p_dst;
181 for ( i = 0; i < p_surface->h; i++ )
183 p_src = p_surface->pixels + i * p_surface->pitch;
184 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
185 for ( j = 0; j < p_surface->w; j++ )
187 SDL_GetRGB( *(p_src++), p_surface->format,
199 uint8_t *p_src = p_surface->pixels;
200 uint8_t *p_dst = p_pic->p[0].p_pixels;
201 int i_pitch = p_pic->p[0].i_pitch < p_surface->pitch ?
202 p_pic->p[0].i_pitch : p_surface->pitch;
204 for ( i = 0; i < p_surface->h; i++ )
206 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_pitch );
207 p_src += p_surface->pitch;
208 p_dst += p_pic->p[0].i_pitch;
215 uint8_t *p_src, *p_dst;
217 for ( i = 0; i < p_surface->h; i++ )
219 p_src = p_surface->pixels + i * p_surface->pitch;
220 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
221 for ( j = 0; j < p_surface->w; j++ )
223 SDL_GetRGB( *(uint32_t*)p_src, p_surface->format,
236 uint8_t *p_src, *p_dst;
238 for ( i = 0; i < p_surface->h; i++ )
240 p_src = p_surface->pixels + i * p_surface->pitch;
241 p_dst = p_pic->p[0].p_pixels + i * p_pic->p[0].i_pitch;
242 for ( j = 0; j < p_surface->w; j++ )
244 SDL_GetRGBA( *(uint32_t*)p_src, p_surface->format,
257 SDL_FreeSurface( p_surface );
258 block_Release( p_block ); *pp_block = NULL;
262 if ( p_surface != NULL ) SDL_FreeSurface( p_surface );
263 block_Release( p_block ); *pp_block = NULL;
267 /*****************************************************************************
268 * CloseDecoder: sdl decoder destruction
269 *****************************************************************************/
270 static void CloseDecoder( vlc_object_t *p_this )
272 decoder_t *p_dec = (decoder_t *)p_this;
273 decoder_sys_t *p_sys = p_dec->p_sys;