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 *****************************************************************************/
32 #include <vlc_codec.h>
35 /*****************************************************************************
36 * decoder_sys_t : raw video decoder descriptor
37 *****************************************************************************/
41 vlc_bool_t b_packetizer;
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( _("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( _("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 )
135 msg_Err( p_dec, "out of memory" );
139 p_dec->p_sys->b_packetizer = VLC_FALSE;
143 if( (int)p_dec->fmt_in.video.i_height < 0 )
145 /* Frames are coded from bottom to top */
146 p_dec->fmt_in.video.i_height =
147 (unsigned int)(-(int)p_dec->fmt_in.video.i_height);
148 p_sys->b_invert = VLC_TRUE;
151 if( p_dec->fmt_in.video.i_width <= 0 || p_dec->fmt_in.video.i_height <= 0 )
153 msg_Err( p_dec, "invalid display size %dx%d",
154 p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
158 /* Find out p_vdec->i_raw_size */
159 vout_InitFormat( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
160 p_dec->fmt_in.video.i_width,
161 p_dec->fmt_in.video.i_height,
162 p_dec->fmt_in.video.i_aspect );
163 p_sys->i_raw_size = p_dec->fmt_out.video.i_bits_per_pixel *
164 p_dec->fmt_out.video.i_width * p_dec->fmt_out.video.i_height / 8;
166 /* Set output properties */
167 p_dec->fmt_out.i_cat = VIDEO_ES;
168 p_dec->fmt_out.i_codec = p_dec->fmt_in.i_codec;
169 if( !p_dec->fmt_in.video.i_aspect )
171 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR *
172 p_dec->fmt_out.video.i_width / p_dec->fmt_out.video.i_height;
174 else p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
176 if( p_dec->fmt_in.video.i_rmask )
177 p_dec->fmt_out.video.i_rmask = p_dec->fmt_in.video.i_rmask;
178 if( p_dec->fmt_in.video.i_gmask )
179 p_dec->fmt_out.video.i_gmask = p_dec->fmt_in.video.i_gmask;
180 if( p_dec->fmt_in.video.i_bmask )
181 p_dec->fmt_out.video.i_bmask = p_dec->fmt_in.video.i_bmask;
184 p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
186 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
192 static int OpenPacketizer( vlc_object_t *p_this )
194 decoder_t *p_dec = (decoder_t*)p_this;
196 int i_ret = OpenDecoder( p_this );
198 if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE;
203 /****************************************************************************
204 * DecodeBlock: the whole thing
205 ****************************************************************************
206 * This function must be fed with complete frames.
207 ****************************************************************************/
208 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
210 decoder_sys_t *p_sys = p_dec->p_sys;
214 if( !pp_block || !*pp_block ) return NULL;
218 if( !p_sys->i_pts && !p_block->i_pts && !p_block->i_dts )
220 /* We've just started the stream, wait for the first PTS. */
221 block_Release( p_block );
225 /* Date management */
226 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
228 if( p_block->i_pts > 0 ) p_sys->i_pts = p_block->i_pts;
229 else if( p_block->i_dts > 0 ) p_sys->i_pts = p_block->i_dts;
232 if( p_block->i_buffer < p_sys->i_raw_size )
234 msg_Warn( p_dec, "invalid frame size (%d < %d)",
235 p_block->i_buffer, p_sys->i_raw_size );
237 block_Release( p_block );
241 if( p_sys->b_packetizer )
243 p_buf = SendFrame( p_dec, p_block );
247 p_buf = DecodeFrame( p_dec, p_block );
250 /* Date management: 1 frame per packet */
251 p_sys->i_pts += ( I64C(1000000) * 1.0 / 25 /*FIXME*/ );
257 /*****************************************************************************
259 *****************************************************************************/
260 static void FillPicture( decoder_t *p_dec, block_t *p_block, picture_t *p_pic )
262 uint8_t *p_src, *p_dst;
263 int i_src, i_plane, i_line, i_width;
264 decoder_sys_t *p_sys = p_dec->p_sys;
266 p_src = p_block->p_buffer;
267 i_src = p_block->i_buffer;
269 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
271 p_dst = p_pic->p[i_plane].p_pixels;
272 i_width = p_pic->p[i_plane].i_pitch;
274 if( p_sys->b_invert )
275 p_src += (i_width * (p_pic->p[i_plane].i_visible_lines - 1));
277 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
279 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_width );
280 p_src += p_sys->b_invert ? -i_width : i_width;
284 if( p_sys->b_invert )
285 p_src += (i_width * (p_pic->p[i_plane].i_visible_lines + 1));
289 /*****************************************************************************
290 * DecodeFrame: decodes a video frame.
291 *****************************************************************************/
292 static picture_t *DecodeFrame( decoder_t *p_dec, block_t *p_block )
294 decoder_sys_t *p_sys = p_dec->p_sys;
297 /* Get a new picture */
298 p_pic = p_dec->pf_vout_buffer_new( p_dec );
301 block_Release( p_block );
305 FillPicture( p_dec, p_block, p_pic );
307 p_pic->date = p_sys->i_pts;
309 block_Release( p_block );
313 /*****************************************************************************
314 * SendFrame: send a video frame to the stream output.
315 *****************************************************************************/
316 static block_t *SendFrame( decoder_t *p_dec, block_t *p_block )
318 decoder_sys_t *p_sys = p_dec->p_sys;
320 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
322 if( p_sys->b_invert )
325 uint8_t *p_tmp, *p_pixels;
328 /* Fill in picture_t fields */
329 vout_InitPicture( VLC_OBJECT(p_dec), &pic, p_dec->fmt_out.i_codec,
330 p_dec->fmt_out.video.i_width,
331 p_dec->fmt_out.video.i_height, VOUT_ASPECT_FACTOR );
335 msg_Err( p_dec, "unsupported chroma" );
339 p_tmp = malloc( pic.p[0].i_pitch );
340 p_pixels = p_block->p_buffer;
341 for( i = 0; i < pic.i_planes; i++ )
343 int i_pitch = pic.p[i].i_pitch;
344 uint8_t *p_top = p_pixels;
345 uint8_t *p_bottom = p_pixels + i_pitch *
346 (pic.p[i].i_visible_lines - 1);
348 for( j = 0; j < pic.p[i].i_visible_lines / 2; j++ )
350 p_dec->p_libvlc->pf_memcpy( p_tmp, p_bottom,
351 pic.p[i].i_visible_pitch );
352 p_dec->p_libvlc->pf_memcpy( p_bottom, p_top,
353 pic.p[i].i_visible_pitch );
354 p_dec->p_libvlc->pf_memcpy( p_top, p_tmp,
355 pic.p[i].i_visible_pitch );
360 p_pixels += i_pitch * pic.p[i].i_lines;
368 /*****************************************************************************
369 * CloseDecoder: decoder destruction
370 *****************************************************************************/
371 static void CloseDecoder( vlc_object_t *p_this )
373 decoder_t *p_dec = (decoder_t*)p_this;
374 free( p_dec->p_sys );