30e05b3f98426f207141ba2da621d5a4aa25548a
[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 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
30
31 #include <vlc/vlc.h>
32 #include <vlc_plugin.h>
33 #include <vlc_codec.h>
34 #include <vlc_vout.h>
35
36 /*****************************************************************************
37  * decoder_sys_t : raw video decoder descriptor
38  *****************************************************************************/
39 struct decoder_sys_t
40 {
41     /* Module mode */
42     bool b_packetizer;
43
44     /*
45      * Input properties
46      */
47     size_t i_raw_size;
48     bool b_invert;
49
50     /*
51      * Common properties
52      */
53     mtime_t i_pts;
54
55 };
56
57 /****************************************************************************
58  * Local prototypes
59  ****************************************************************************/
60 static int  OpenDecoder   ( vlc_object_t * );
61 static int  OpenPacketizer( vlc_object_t * );
62 static void CloseDecoder  ( vlc_object_t * );
63
64 static void *DecodeBlock  ( decoder_t *, block_t ** );
65
66 static picture_t *DecodeFrame( decoder_t *, block_t * );
67 static block_t   *SendFrame  ( decoder_t *, block_t * );
68
69 /*****************************************************************************
70  * Module descriptor
71  *****************************************************************************/
72 vlc_module_begin();
73     set_description( N_("Pseudo raw video decoder") );
74     set_capability( "decoder", 50 );
75     set_category( CAT_INPUT );
76     set_subcategory( SUBCAT_INPUT_VCODEC );
77     set_callbacks( OpenDecoder, CloseDecoder );
78
79     add_submodule();
80     set_description( N_("Pseudo raw video packetizer") );
81     set_capability( "packetizer", 100 );
82     set_callbacks( OpenPacketizer, CloseDecoder );
83 vlc_module_end();
84
85 /*****************************************************************************
86  * OpenDecoder: probe the decoder and return score
87  *****************************************************************************/
88 static int OpenDecoder( vlc_object_t *p_this )
89 {
90     decoder_t *p_dec = (decoder_t*)p_this;
91     decoder_sys_t *p_sys;
92
93     switch( p_dec->fmt_in.i_codec )
94     {
95         /* Planar YUV */
96         case VLC_FOURCC('I','4','4','4'):
97         case VLC_FOURCC('I','4','2','2'):
98         case VLC_FOURCC('I','4','2','0'):
99         case VLC_FOURCC('Y','V','1','2'):
100         case VLC_FOURCC('I','Y','U','V'):
101         case VLC_FOURCC('I','4','1','1'):
102         case VLC_FOURCC('I','4','1','0'):
103         case VLC_FOURCC('Y','V','U','9'):
104         case VLC_FOURCC('Y','4','2','B'):
105         case VLC_FOURCC('Y','4','1','B'):
106
107         /* Packed YUV */
108         case VLC_FOURCC('Y','U','Y','2'):
109         case VLC_FOURCC('Y','8','0','0'):
110         case VLC_FOURCC('U','Y','V','Y'):
111         case VLC_FOURCC('H','D','Y','C'):
112
113         /* RGB */
114         case VLC_FOURCC('R','V','3','2'):
115         case VLC_FOURCC('R','V','2','4'):
116         case VLC_FOURCC('R','V','1','6'):
117         case VLC_FOURCC('R','V','1','5'):
118             break;
119         case VLC_FOURCC('2','V','u','y'):
120         case VLC_FOURCC('2','v','u','y'):
121         case VLC_FOURCC('A','V','U','I'):
122             p_dec->fmt_in.i_codec = VLC_FOURCC('U','Y','V','Y');
123             break;
124         case VLC_FOURCC('y','v','1','2'):
125             p_dec->fmt_in.i_codec = VLC_FOURCC('Y','V','1','2');
126             break;
127
128         default:
129             return VLC_EGENERIC;
130     }
131
132     /* Allocate the memory needed to store the decoder's structure */
133     if( ( p_dec->p_sys = p_sys =
134           (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
135         return VLC_ENOMEM;
136     /* Misc init */
137     p_dec->p_sys->b_packetizer = false;
138     p_sys->i_pts = 0;
139     p_sys->b_invert = 0;
140
141     if( (int)p_dec->fmt_in.video.i_height < 0 )
142     {
143         /* Frames are coded from bottom to top */
144         p_dec->fmt_in.video.i_height =
145             (unsigned int)(-(int)p_dec->fmt_in.video.i_height);
146         p_sys->b_invert = true;
147     }
148
149     if( p_dec->fmt_in.video.i_width <= 0 || p_dec->fmt_in.video.i_height <= 0 )
150     {
151         msg_Err( p_dec, "invalid display size %dx%d",
152                  p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
153         return VLC_EGENERIC;
154     }
155
156     /* Find out p_vdec->i_raw_size */
157     vout_InitFormat( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
158                      p_dec->fmt_in.video.i_width,
159                      p_dec->fmt_in.video.i_height,
160                      p_dec->fmt_in.video.i_aspect );
161     p_sys->i_raw_size = p_dec->fmt_out.video.i_bits_per_pixel *
162         p_dec->fmt_out.video.i_width * p_dec->fmt_out.video.i_height / 8;
163
164     /* Set output properties */
165     p_dec->fmt_out.i_cat = VIDEO_ES;
166     p_dec->fmt_out.i_codec = p_dec->fmt_in.i_codec;
167     if( !p_dec->fmt_in.video.i_aspect )
168     {
169         p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR *
170             p_dec->fmt_out.video.i_width / p_dec->fmt_out.video.i_height;
171     }
172     else p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
173
174     if( p_dec->fmt_in.video.i_rmask )
175         p_dec->fmt_out.video.i_rmask = p_dec->fmt_in.video.i_rmask;
176     if( p_dec->fmt_in.video.i_gmask )
177         p_dec->fmt_out.video.i_gmask = p_dec->fmt_in.video.i_gmask;
178     if( p_dec->fmt_in.video.i_bmask )
179         p_dec->fmt_out.video.i_bmask = p_dec->fmt_in.video.i_bmask;
180
181     /* Set callbacks */
182     p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
183         DecodeBlock;
184     p_dec->pf_packetize    = (block_t *(*)(decoder_t *, block_t **))
185         DecodeBlock;
186
187     return VLC_SUCCESS;
188 }
189
190 static int OpenPacketizer( vlc_object_t *p_this )
191 {
192     decoder_t *p_dec = (decoder_t*)p_this;
193
194     int i_ret = OpenDecoder( p_this );
195
196     if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = true;
197
198     return i_ret;
199 }
200
201 /****************************************************************************
202  * DecodeBlock: the whole thing
203  ****************************************************************************
204  * This function must be fed with complete frames.
205  ****************************************************************************/
206 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
207 {
208     decoder_sys_t *p_sys = p_dec->p_sys;
209     block_t *p_block;
210     void *p_buf;
211
212     if( !pp_block || !*pp_block ) return NULL;
213
214     p_block = *pp_block;
215
216     if( !p_sys->i_pts && !p_block->i_pts && !p_block->i_dts )
217     {
218         /* We've just started the stream, wait for the first PTS. */
219         block_Release( p_block );
220         return NULL;
221     }
222
223     /* Date management */
224     if( p_block->i_pts > 0 || p_block->i_dts > 0 )
225     {
226         if( p_block->i_pts > 0 ) p_sys->i_pts = p_block->i_pts;
227         else if( p_block->i_dts > 0 ) p_sys->i_pts = p_block->i_dts;
228     }
229
230     if( p_block->i_buffer < p_sys->i_raw_size )
231     {
232         msg_Warn( p_dec, "invalid frame size (%d < %d)",
233                   p_block->i_buffer, p_sys->i_raw_size );
234
235         block_Release( p_block );
236         return NULL;
237     }
238
239     if( p_sys->b_packetizer )
240     {
241         p_buf = SendFrame( p_dec, p_block );
242     }
243     else
244     {
245         p_buf = DecodeFrame( p_dec, p_block );
246     }
247
248     /* Date management: 1 frame per packet */
249     p_sys->i_pts += ( INT64_C(1000000) * 1.0 / 25 /*FIXME*/ );
250     *pp_block = NULL;
251
252     return p_buf;
253 }
254
255 /*****************************************************************************
256  * FillPicture:
257  *****************************************************************************/
258 static void FillPicture( decoder_t *p_dec, block_t *p_block, picture_t *p_pic )
259 {
260     uint8_t *p_src, *p_dst;
261     int i_plane, i_line, i_width;
262     decoder_sys_t *p_sys = p_dec->p_sys;
263
264     p_src = p_block->p_buffer;
265
266     for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
267     {
268         p_dst = p_pic->p[i_plane].p_pixels;
269         i_width = p_pic->p[i_plane].i_pitch;
270
271         if( p_sys->b_invert )
272             p_src += (i_width * (p_pic->p[i_plane].i_visible_lines - 1));
273
274         for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
275         {
276             vlc_memcpy( p_dst, p_src, i_width );
277             p_src += p_sys->b_invert ? -i_width : i_width;
278             p_dst += i_width;
279         }
280
281         if( p_sys->b_invert )
282             p_src += (i_width * (p_pic->p[i_plane].i_visible_lines + 1));
283     }
284 }
285
286 /*****************************************************************************
287  * DecodeFrame: decodes a video frame.
288  *****************************************************************************/
289 static picture_t *DecodeFrame( decoder_t *p_dec, block_t *p_block )
290 {
291     decoder_sys_t *p_sys = p_dec->p_sys;
292     picture_t *p_pic;
293
294     /* Get a new picture */
295     p_pic = p_dec->pf_vout_buffer_new( p_dec );
296     if( !p_pic )
297     {
298         block_Release( p_block );
299         return NULL;
300     }
301
302     FillPicture( p_dec, p_block, p_pic );
303
304     p_pic->date = p_sys->i_pts;
305
306     block_Release( p_block );
307     return p_pic;
308 }
309
310 /*****************************************************************************
311  * SendFrame: send a video frame to the stream output.
312  *****************************************************************************/
313 static block_t *SendFrame( decoder_t *p_dec, block_t *p_block )
314 {
315     decoder_sys_t *p_sys = p_dec->p_sys;
316
317     p_block->i_dts = p_block->i_pts = p_sys->i_pts;
318
319     if( p_sys->b_invert )
320     {
321         picture_t pic;
322         uint8_t *p_tmp, *p_pixels;
323         int i, j;
324
325         /* Fill in picture_t fields */
326         vout_InitPicture( VLC_OBJECT(p_dec), &pic, p_dec->fmt_out.i_codec,
327                           p_dec->fmt_out.video.i_width,
328                           p_dec->fmt_out.video.i_height, VOUT_ASPECT_FACTOR );
329
330         if( !pic.i_planes )
331         {
332             msg_Err( p_dec, "unsupported chroma" );
333             return p_block;
334         }
335
336         p_tmp = malloc( pic.p[0].i_pitch );
337         if( !p_tmp )
338             return p_block;
339         p_pixels = p_block->p_buffer;
340         for( i = 0; i < pic.i_planes; i++ )
341         {
342             int i_pitch = pic.p[i].i_pitch;
343             uint8_t *p_top = p_pixels;
344             uint8_t *p_bottom = p_pixels + i_pitch *
345                 (pic.p[i].i_visible_lines - 1);
346
347             for( j = 0; j < pic.p[i].i_visible_lines / 2; j++ )
348             {
349                 vlc_memcpy( p_tmp, p_bottom, pic.p[i].i_visible_pitch  );
350                 vlc_memcpy( p_bottom, p_top, pic.p[i].i_visible_pitch  );
351                 vlc_memcpy( p_top, p_tmp, pic.p[i].i_visible_pitch  );
352                 p_top += i_pitch;
353                 p_bottom -= i_pitch;
354             }
355
356             p_pixels += i_pitch * pic.p[i].i_lines;
357         }
358         free( p_tmp );
359     }
360
361     return p_block;
362 }
363
364 /*****************************************************************************
365  * CloseDecoder: decoder destruction
366  *****************************************************************************/
367 static void CloseDecoder( vlc_object_t *p_this )
368 {
369     decoder_t *p_dec = (decoder_t*)p_this;
370     free( p_dec->p_sys );
371 }