696031398ea7922042ac2c938a6785d94fd9c85b
[vlc.git] / modules / codec / rawvideo.c
1 /*****************************************************************************
2  * rawvideo.c: Pseudo video decoder/packetizer for raw video data
3  *****************************************************************************
4  * Copyright (C) 2001, 2002 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8  *
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.
13  *
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.
18  *
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  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27 #include <vlc/vlc.h>
28 #include <vlc_codec.h>
29 #include <vlc_vout.h>
30
31 /*****************************************************************************
32  * decoder_sys_t : raw video decoder descriptor
33  *****************************************************************************/
34 struct decoder_sys_t
35 {
36     /* Module mode */
37     vlc_bool_t b_packetizer;
38
39     /*
40      * Input properties
41      */
42     int i_raw_size;
43     vlc_bool_t b_invert;
44
45     /*
46      * Common properties
47      */
48     mtime_t i_pts;
49
50 };
51
52 /****************************************************************************
53  * Local prototypes
54  ****************************************************************************/
55 static int  OpenDecoder   ( vlc_object_t * );
56 static int  OpenPacketizer( vlc_object_t * );
57 static void CloseDecoder  ( vlc_object_t * );
58
59 static void *DecodeBlock  ( decoder_t *, block_t ** );
60
61 static picture_t *DecodeFrame( decoder_t *, block_t * );
62 static block_t   *SendFrame  ( decoder_t *, block_t * );
63
64 /*****************************************************************************
65  * Module descriptor
66  *****************************************************************************/
67 vlc_module_begin();
68     set_description( _("Pseudo raw video decoder") );
69     set_capability( "decoder", 50 );
70     set_category( CAT_INPUT );
71     set_subcategory( SUBCAT_INPUT_VCODEC );
72     set_callbacks( OpenDecoder, CloseDecoder );
73
74     add_submodule();
75     set_description( _("Pseudo raw video packetizer") );
76     set_capability( "packetizer", 100 );
77     set_callbacks( OpenPacketizer, CloseDecoder );
78 vlc_module_end();
79
80 /*****************************************************************************
81  * OpenDecoder: probe the decoder and return score
82  *****************************************************************************/
83 static int OpenDecoder( vlc_object_t *p_this )
84 {
85     decoder_t *p_dec = (decoder_t*)p_this;
86     decoder_sys_t *p_sys;
87
88     switch( p_dec->fmt_in.i_codec )
89     {
90         /* Planar YUV */
91         case VLC_FOURCC('I','4','4','4'):
92         case VLC_FOURCC('I','4','2','2'):
93         case VLC_FOURCC('I','4','2','0'):
94         case VLC_FOURCC('Y','V','1','2'):
95         case VLC_FOURCC('I','Y','U','V'):
96         case VLC_FOURCC('I','4','1','1'):
97         case VLC_FOURCC('I','4','1','0'):
98         case VLC_FOURCC('Y','V','U','9'):
99
100         /* Packed YUV */
101         case VLC_FOURCC('Y','U','Y','2'):
102         case VLC_FOURCC('U','Y','V','Y'):
103
104         /* RGB */
105         case VLC_FOURCC('R','V','3','2'):
106         case VLC_FOURCC('R','V','2','4'):
107         case VLC_FOURCC('R','V','1','6'):
108         case VLC_FOURCC('R','V','1','5'):
109             break;
110         case VLC_FOURCC('2','V','u','y'):
111             p_dec->fmt_in.i_codec = VLC_FOURCC('U','Y','V','Y');
112             break;
113         case VLC_FOURCC('y','v','1','2'):
114             p_dec->fmt_in.i_codec = VLC_FOURCC('Y','V','1','2');
115             break;
116
117         default:
118             return VLC_EGENERIC;
119     }
120
121     /* Allocate the memory needed to store the decoder's structure */
122     if( ( p_dec->p_sys = p_sys =
123           (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
124     {
125         msg_Err( p_dec, "out of memory" );
126         return VLC_EGENERIC;
127     }
128     /* Misc init */
129     p_dec->p_sys->b_packetizer = VLC_FALSE;
130     p_sys->i_pts = 0;
131     p_sys->b_invert = 0;
132
133     if( (int)p_dec->fmt_in.video.i_height < 0 )
134     {
135         /* Frames are coded from bottom to top */
136         p_dec->fmt_in.video.i_height =
137             (unsigned int)(-(int)p_dec->fmt_in.video.i_height);
138         p_sys->b_invert = VLC_TRUE;
139     }
140
141     if( p_dec->fmt_in.video.i_width <= 0 || p_dec->fmt_in.video.i_height <= 0 )
142     {
143         msg_Err( p_dec, "invalid display size %dx%d",
144                  p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
145         return VLC_EGENERIC;
146     }
147
148     /* Find out p_vdec->i_raw_size */
149     vout_InitFormat( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
150                      p_dec->fmt_in.video.i_width,
151                      p_dec->fmt_in.video.i_height,
152                      p_dec->fmt_in.video.i_aspect );
153     p_sys->i_raw_size = p_dec->fmt_out.video.i_bits_per_pixel *
154         p_dec->fmt_out.video.i_width * p_dec->fmt_out.video.i_height / 8;
155
156     /* Set output properties */
157     p_dec->fmt_out.i_cat = VIDEO_ES;
158     p_dec->fmt_out.i_codec = p_dec->fmt_in.i_codec;
159     if( !p_dec->fmt_in.video.i_aspect )
160     {
161         p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR *
162             p_dec->fmt_out.video.i_width / p_dec->fmt_out.video.i_height;
163     }
164     else p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
165
166     if( p_dec->fmt_in.video.i_rmask )
167         p_dec->fmt_out.video.i_rmask = p_dec->fmt_in.video.i_rmask;
168     if( p_dec->fmt_in.video.i_gmask )
169         p_dec->fmt_out.video.i_gmask = p_dec->fmt_in.video.i_gmask;
170     if( p_dec->fmt_in.video.i_bmask )
171         p_dec->fmt_out.video.i_bmask = p_dec->fmt_in.video.i_bmask;
172
173     /* Set callbacks */
174     p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
175         DecodeBlock;
176     p_dec->pf_packetize    = (block_t *(*)(decoder_t *, block_t **))
177         DecodeBlock;
178
179     return VLC_SUCCESS;
180 }
181
182 static int OpenPacketizer( vlc_object_t *p_this )
183 {
184     decoder_t *p_dec = (decoder_t*)p_this;
185
186     int i_ret = OpenDecoder( p_this );
187
188     if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE;
189
190     return i_ret;
191 }
192
193 /****************************************************************************
194  * DecodeBlock: the whole thing
195  ****************************************************************************
196  * This function must be fed with complete frames.
197  ****************************************************************************/
198 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
199 {
200     decoder_sys_t *p_sys = p_dec->p_sys;
201     block_t *p_block;
202     void *p_buf;
203
204     if( !pp_block || !*pp_block ) return NULL;
205
206     p_block = *pp_block;
207
208     if( !p_sys->i_pts && !p_block->i_pts && !p_block->i_dts )
209     {
210         /* We've just started the stream, wait for the first PTS. */
211         block_Release( p_block );
212         return NULL;
213     }
214
215     /* Date management */
216     if( p_block->i_pts > 0 || p_block->i_dts > 0 )
217     {
218         if( p_block->i_pts > 0 ) p_sys->i_pts = p_block->i_pts;
219         else if( p_block->i_dts > 0 ) p_sys->i_pts = p_block->i_dts;
220     }
221
222     if( p_block->i_buffer < p_sys->i_raw_size )
223     {
224         msg_Warn( p_dec, "invalid frame size (%d < %d)",
225                   p_block->i_buffer, p_sys->i_raw_size );
226
227         block_Release( p_block );
228         return NULL;
229     }
230
231     if( p_sys->b_packetizer )
232     {
233         p_buf = SendFrame( p_dec, p_block );
234     }
235     else
236     {
237         p_buf = DecodeFrame( p_dec, p_block );
238     }
239
240     /* Date management: 1 frame per packet */
241     p_sys->i_pts += ( I64C(1000000) * 1.0 / 25 /*FIXME*/ );
242     *pp_block = NULL;
243
244     return p_buf;
245 }
246
247 /*****************************************************************************
248  * FillPicture:
249  *****************************************************************************/
250 static void FillPicture( decoder_t *p_dec, block_t *p_block, picture_t *p_pic )
251 {
252     uint8_t *p_src, *p_dst;
253     int i_src, i_plane, i_line, i_width;
254     decoder_sys_t *p_sys = p_dec->p_sys;
255
256     p_src = p_block->p_buffer;
257     i_src = p_block->i_buffer;
258
259     for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
260     {
261         p_dst = p_pic->p[i_plane].p_pixels;
262         i_width = p_pic->p[i_plane].i_pitch;
263
264         if( p_sys->b_invert )
265             p_src += (i_width * (p_pic->p[i_plane].i_visible_lines - 1));
266
267         for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
268         {
269             p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_width );
270             p_src += p_sys->b_invert ? -i_width : i_width;
271             p_dst += i_width;
272         }
273
274         if( p_sys->b_invert )
275             p_src += (i_width * (p_pic->p[i_plane].i_visible_lines + 1));
276     }
277 }
278
279 /*****************************************************************************
280  * DecodeFrame: decodes a video frame.
281  *****************************************************************************/
282 static picture_t *DecodeFrame( decoder_t *p_dec, block_t *p_block )
283 {
284     decoder_sys_t *p_sys = p_dec->p_sys;
285     picture_t *p_pic;
286
287     /* Get a new picture */
288     p_pic = p_dec->pf_vout_buffer_new( p_dec );
289     if( !p_pic )
290     {
291         block_Release( p_block );
292         return NULL;
293     }
294
295     FillPicture( p_dec, p_block, p_pic );
296
297     p_pic->date = p_sys->i_pts;
298
299     block_Release( p_block );
300     return p_pic;
301 }
302
303 /*****************************************************************************
304  * SendFrame: send a video frame to the stream output.
305  *****************************************************************************/
306 static block_t *SendFrame( decoder_t *p_dec, block_t *p_block )
307 {
308     decoder_sys_t *p_sys = p_dec->p_sys;
309
310     p_block->i_dts = p_block->i_pts = p_sys->i_pts;
311
312     if( p_sys->b_invert )
313     {
314         picture_t pic;
315         uint8_t *p_tmp, *p_pixels;
316         int i, j;
317
318         /* Fill in picture_t fields */
319         vout_InitPicture( VLC_OBJECT(p_dec), &pic, p_dec->fmt_out.i_codec,
320                           p_dec->fmt_out.video.i_width,
321                           p_dec->fmt_out.video.i_height, VOUT_ASPECT_FACTOR );
322
323         if( !pic.i_planes )
324         {
325             msg_Err( p_dec, "unsupported chroma" );
326             return p_block;
327         }
328
329         p_tmp = malloc( pic.p[0].i_pitch );
330         p_pixels = p_block->p_buffer;
331         for( i = 0; i < pic.i_planes; i++ )
332         {
333             int i_pitch = pic.p[i].i_pitch;
334             uint8_t *p_top = p_pixels;
335             uint8_t *p_bottom = p_pixels + i_pitch *
336                 (pic.p[i].i_visible_lines - 1);
337
338             for( j = 0; j < pic.p[i].i_visible_lines / 2; j++ )
339             {
340                 p_dec->p_libvlc->pf_memcpy( p_tmp, p_bottom,
341                                          pic.p[i].i_visible_pitch  );
342                 p_dec->p_libvlc->pf_memcpy( p_bottom, p_top,
343                                          pic.p[i].i_visible_pitch  );
344                 p_dec->p_libvlc->pf_memcpy( p_top, p_tmp,
345                                          pic.p[i].i_visible_pitch  );
346                 p_top += i_pitch;
347                 p_bottom -= i_pitch;
348             }
349
350             p_pixels += i_pitch * pic.p[i].i_lines;
351         }
352         free( p_tmp );
353     }
354
355     return p_block;
356 }
357
358 /*****************************************************************************
359  * CloseDecoder: decoder destruction
360  *****************************************************************************/
361 static void CloseDecoder( vlc_object_t *p_this )
362 {
363     decoder_t *p_dec = (decoder_t*)p_this;
364     free( p_dec->p_sys );
365 }