1 /*****************************************************************************
2 * rawvideo.c: Pseudo video decoder/packetizer for raw video data
3 *****************************************************************************
4 * Copyright (C) 2001, 2002 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@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 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_codec.h>
36 /*****************************************************************************
37 * decoder_sys_t : raw video decoder descriptor
38 *****************************************************************************/
56 /****************************************************************************
58 ****************************************************************************/
59 static int OpenDecoder ( vlc_object_t * );
60 static int OpenPacketizer( vlc_object_t * );
61 static void CloseDecoder ( vlc_object_t * );
63 static void *DecodeBlock ( decoder_t *, block_t ** );
65 static picture_t *DecodeFrame( decoder_t *, block_t * );
66 static block_t *SendFrame ( decoder_t *, block_t * );
68 /*****************************************************************************
70 *****************************************************************************/
72 set_description( N_("Pseudo raw video decoder") )
73 set_capability( "decoder", 50 )
74 set_category( CAT_INPUT )
75 set_subcategory( SUBCAT_INPUT_VCODEC )
76 set_callbacks( OpenDecoder, CloseDecoder )
79 set_description( N_("Pseudo raw video packetizer") )
80 set_capability( "packetizer", 100 )
81 set_callbacks( OpenPacketizer, CloseDecoder )
84 /*****************************************************************************
85 * OpenDecoder: probe the decoder and return score
86 *****************************************************************************/
87 static int OpenDecoder( vlc_object_t *p_this )
89 decoder_t *p_dec = (decoder_t*)p_this;
92 switch( p_dec->fmt_in.i_codec )
95 case VLC_FOURCC('I','4','4','4'):
96 case VLC_FOURCC('I','4','2','2'):
97 case VLC_FOURCC('I','4','2','0'):
98 case VLC_FOURCC('Y','V','1','2'):
99 case VLC_FOURCC('I','Y','U','V'):
100 case VLC_FOURCC('I','4','1','1'):
101 case VLC_FOURCC('I','4','1','0'):
102 case VLC_FOURCC('Y','V','U','9'):
103 case VLC_FOURCC('Y','4','2','B'):
104 case VLC_FOURCC('Y','4','1','B'):
107 case VLC_FOURCC('Y','U','Y','2'):
108 case VLC_FOURCC('Y','8','0','0'):
109 case VLC_FOURCC('U','Y','V','Y'):
110 case VLC_FOURCC('H','D','Y','C'):
113 case VLC_FOURCC('R','V','3','2'):
114 case VLC_FOURCC('R','V','2','4'):
115 case VLC_FOURCC('R','V','1','6'):
116 case VLC_FOURCC('R','V','1','5'):
118 case VLC_FOURCC('2','V','u','y'):
119 case VLC_FOURCC('2','v','u','y'):
120 case VLC_FOURCC('A','V','U','I'):
121 p_dec->fmt_in.i_codec = VLC_FOURCC('U','Y','V','Y');
123 case VLC_FOURCC('y','v','1','2'):
124 p_dec->fmt_in.i_codec = VLC_FOURCC('Y','V','1','2');
131 /* Allocate the memory needed to store the decoder's structure */
132 if( ( p_dec->p_sys = p_sys =
133 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
136 p_dec->p_sys->b_packetizer = false;
139 if( (int)p_dec->fmt_in.video.i_height < 0 )
141 /* Frames are coded from bottom to top */
142 p_dec->fmt_in.video.i_height =
143 (unsigned int)(-(int)p_dec->fmt_in.video.i_height);
144 p_sys->b_invert = true;
147 if( p_dec->fmt_in.video.i_width <= 0 || p_dec->fmt_in.video.i_height <= 0 )
149 msg_Err( p_dec, "invalid display size %dx%d",
150 p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
154 es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
156 date_Init( &p_sys->pts, p_dec->fmt_out.video.i_frame_rate,
157 p_dec->fmt_out.video.i_frame_rate_base );
158 if( p_dec->fmt_out.video.i_frame_rate == 0 ||
159 p_dec->fmt_out.video.i_frame_rate_base == 0)
161 msg_Warn( p_dec, "invalid frame rate %d/%d, using 25 fps instead",
162 p_dec->fmt_out.video.i_frame_rate,
163 p_dec->fmt_out.video.i_frame_rate_base);
164 date_Init( &p_sys->pts, 25, 1 );
167 /* Find out p_vdec->i_raw_size */
168 vout_InitFormat( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
169 p_dec->fmt_in.video.i_width,
170 p_dec->fmt_in.video.i_height,
171 p_dec->fmt_in.video.i_aspect );
172 p_sys->i_raw_size = p_dec->fmt_out.video.i_bits_per_pixel *
173 p_dec->fmt_out.video.i_width * p_dec->fmt_out.video.i_height / 8;
175 if( !p_dec->fmt_in.video.i_aspect )
177 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR *
178 p_dec->fmt_out.video.i_width / p_dec->fmt_out.video.i_height;
182 p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
184 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
190 static int OpenPacketizer( vlc_object_t *p_this )
192 decoder_t *p_dec = (decoder_t*)p_this;
194 int i_ret = OpenDecoder( p_this );
196 if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = true;
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 )
208 decoder_sys_t *p_sys = p_dec->p_sys;
212 if( !pp_block || !*pp_block ) return NULL;
217 if( !p_block->i_pts && !p_block->i_dts && !date_Get( &p_sys->pts ) )
219 /* We've just started the stream, wait for the first PTS. */
220 block_Release( p_block );
224 /* Date management: If there is a pts avaliable, use that. */
227 date_Set( &p_sys->pts, p_block->i_pts );
229 else if( p_block->i_dts )
231 /* NB, davidf doesn't quite agree with this in general, it is ok
232 * for rawvideo since it is in order (ie pts=dts), however, it
233 * may not be ok for an out-of-order codec, so don't copy this
234 * without thinking */
235 date_Set( &p_sys->pts, p_block->i_dts );
238 if( p_block->i_buffer < p_sys->i_raw_size )
240 msg_Warn( p_dec, "invalid frame size (%zu < %zu)",
241 p_block->i_buffer, p_sys->i_raw_size );
243 block_Release( p_block );
247 if( p_sys->b_packetizer )
249 p_buf = SendFrame( p_dec, p_block );
253 p_buf = DecodeFrame( p_dec, p_block );
256 /* Date management: 1 frame per packet */
257 date_Increment( &p_sys->pts, 1 );
263 /*****************************************************************************
265 *****************************************************************************/
266 static void FillPicture( decoder_t *p_dec, block_t *p_block, picture_t *p_pic )
269 decoder_sys_t *p_sys = p_dec->p_sys;
270 uint8_t *p_src = p_block->p_buffer;
272 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
274 int i_pitch = p_pic->p[i_plane].i_pitch;
275 int i_visible_pitch = p_pic->p[i_plane].i_visible_pitch;
276 int i_visible_lines = p_pic->p[i_plane].i_visible_lines;
277 uint8_t *p_dst = p_pic->p[i_plane].p_pixels;
278 uint8_t *p_dst_end = p_dst+i_pitch*i_visible_lines;
280 if( p_sys->b_invert )
281 for( p_dst_end -= i_pitch; p_dst <= p_dst_end;
282 p_dst_end -= i_pitch, p_src += i_visible_pitch )
283 vlc_memcpy( p_dst_end, p_src, i_visible_pitch );
285 for( ; p_dst < p_dst_end;
286 p_dst += i_pitch, p_src += i_visible_pitch )
287 vlc_memcpy( p_dst, p_src, i_visible_pitch );
291 /*****************************************************************************
292 * DecodeFrame: decodes a video frame.
293 *****************************************************************************/
294 static picture_t *DecodeFrame( decoder_t *p_dec, block_t *p_block )
296 decoder_sys_t *p_sys = p_dec->p_sys;
299 /* Get a new picture */
300 p_pic = decoder_NewPicture( p_dec );
303 block_Release( p_block );
307 FillPicture( p_dec, p_block, p_pic );
309 p_pic->date = date_Get( &p_sys->pts );
310 p_pic->b_progressive = true;
312 block_Release( p_block );
316 /*****************************************************************************
317 * SendFrame: send a video frame to the stream output.
318 *****************************************************************************/
319 static block_t *SendFrame( decoder_t *p_dec, block_t *p_block )
321 decoder_sys_t *p_sys = p_dec->p_sys;
323 p_block->i_dts = p_block->i_pts = date_Get( &p_sys->pts );
325 if( p_sys->b_invert )
328 uint8_t *p_tmp, *p_pixels;
331 /* Fill in picture_t fields */
332 vout_InitPicture( VLC_OBJECT(p_dec), &pic, p_dec->fmt_out.i_codec,
333 p_dec->fmt_out.video.i_width,
334 p_dec->fmt_out.video.i_height, VOUT_ASPECT_FACTOR );
338 msg_Err( p_dec, "unsupported chroma" );
342 p_tmp = malloc( pic.p[0].i_pitch );
345 p_pixels = p_block->p_buffer;
346 for( i = 0; i < pic.i_planes; i++ )
348 int i_pitch = pic.p[i].i_pitch;
349 uint8_t *p_top = p_pixels;
350 uint8_t *p_bottom = p_pixels + i_pitch *
351 (pic.p[i].i_visible_lines - 1);
353 for( j = 0; j < pic.p[i].i_visible_lines / 2; j++ )
355 vlc_memcpy( p_tmp, p_bottom, pic.p[i].i_visible_pitch );
356 vlc_memcpy( p_bottom, p_top, pic.p[i].i_visible_pitch );
357 vlc_memcpy( p_top, p_tmp, pic.p[i].i_visible_pitch );
362 p_pixels += i_pitch * pic.p[i].i_lines;
370 /*****************************************************************************
371 * CloseDecoder: decoder destruction
372 *****************************************************************************/
373 static void CloseDecoder( vlc_object_t *p_this )
375 decoder_t *p_dec = (decoder_t*)p_this;
376 free( p_dec->p_sys );