1 /*****************************************************************************
2 * rawvideo.c: Pseudo video decoder/packetizer for raw video data
3 *****************************************************************************
4 * Copyright (C) 2001, 2002 VideoLAN
5 * $Id: rawvideo.c,v 1.8 2003/11/16 21:07:30 gbazin Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
28 #include <string.h> /* strdup() */
31 #include <vlc/decoder.h>
32 #include <vlc/input.h>
36 /*****************************************************************************
37 * decoder_sys_t : raw video decoder descriptor
38 *****************************************************************************/
42 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_callbacks( OpenDecoder, CloseDecoder );
77 set_description( _("Pseudo Raw Video packetizer") );
78 set_capability( "packetizer", 100 );
79 set_callbacks( OpenPacketizer, CloseDecoder );
82 /*****************************************************************************
83 * OpenDecoder: probe the decoder and return score
84 *****************************************************************************/
85 static int OpenDecoder( vlc_object_t *p_this )
87 decoder_t *p_dec = (decoder_t*)p_this;
90 switch( p_dec->fmt_in.i_codec )
93 case VLC_FOURCC('I','4','4','4'):
94 case VLC_FOURCC('I','4','2','2'):
95 case VLC_FOURCC('I','4','2','0'):
96 case VLC_FOURCC('Y','V','1','2'):
97 case VLC_FOURCC('I','Y','U','V'):
98 case VLC_FOURCC('I','4','1','1'):
99 case VLC_FOURCC('I','4','1','0'):
102 case VLC_FOURCC('Y','U','Y','2'):
103 case VLC_FOURCC('U','Y','V','Y'):
106 case VLC_FOURCC('R','V','3','2'):
107 case VLC_FOURCC('R','V','2','4'):
108 case VLC_FOURCC('R','V','1','6'):
109 case VLC_FOURCC('R','V','1','5'):
116 /* Allocate the memory needed to store the decoder's structure */
117 if( ( p_dec->p_sys = p_sys =
118 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
120 msg_Err( p_dec, "out of memory" );
124 p_dec->p_sys->b_packetizer = VLC_FALSE;
127 if( p_dec->fmt_in.video.i_width <= 0 ||
128 p_dec->fmt_in.video.i_height <= 0 )
130 msg_Err( p_dec, "invalid display size %dx%d",
131 p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
135 /* Find out p_vdec->i_raw_size */
136 vout_InitFormat( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
137 p_dec->fmt_in.video.i_width,
138 p_dec->fmt_in.video.i_height,
139 p_dec->fmt_in.video.i_aspect );
140 p_sys->i_raw_size = p_dec->fmt_out.video.i_bits_per_pixel *
141 p_dec->fmt_out.video.i_width * p_dec->fmt_out.video.i_height / 8;
143 /* Set output properties */
144 p_dec->fmt_out.i_cat = VIDEO_ES;
145 p_dec->fmt_out.i_codec = p_dec->fmt_in.i_codec;
146 //if( !p_dec->fmt_in.video.i_aspect )
148 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR *
149 p_dec->fmt_out.video.i_width / p_dec->fmt_out.video.i_height;
153 p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
155 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
161 static int OpenPacketizer( vlc_object_t *p_this )
163 decoder_t *p_dec = (decoder_t*)p_this;
165 int i_ret = OpenDecoder( p_this );
167 if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE;
172 /****************************************************************************
173 * DecodeBlock: the whole thing
174 ****************************************************************************
175 * This function must be fed with complete frames.
176 ****************************************************************************/
177 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
179 decoder_sys_t *p_sys = p_dec->p_sys;
183 if( !pp_block || !*pp_block ) return NULL;
187 if( !p_sys->i_pts && !p_block->i_pts )
189 /* We've just started the stream, wait for the first PTS. */
190 block_Release( p_block );
194 /* Date management */
195 if( p_block->i_pts > 0 && p_block->i_pts != p_sys->i_pts )
197 p_sys->i_pts = p_block->i_pts;
200 if( p_block->i_buffer < p_sys->i_raw_size )
202 msg_Warn( p_dec, "invalid frame size (%d < %d)",
203 p_block->i_buffer, p_sys->i_raw_size );
205 block_Release( p_block );
209 if( p_sys->b_packetizer )
211 p_buf = SendFrame( p_dec, p_block );
215 p_buf = DecodeFrame( p_dec, p_block );
218 /* Date management: 1 frame per packet */
219 p_sys->i_pts += ( I64C(1000000) * 1.0 / 25 /*FIXME*/ );
225 /*****************************************************************************
227 *****************************************************************************/
228 static void FillPicture( decoder_t *p_dec, block_t *p_block, picture_t *p_pic )
230 uint8_t *p_src, *p_dst;
231 int i_src, i_plane, i_line, i_width;
233 p_src = p_block->p_buffer;
234 i_src = p_block->i_buffer;
236 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
238 p_dst = p_pic->p[i_plane].p_pixels;
239 i_width = p_pic->p[i_plane].i_visible_pitch;
241 for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
243 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_width );
245 p_dst += p_pic->p[i_plane].i_pitch;
250 /*****************************************************************************
251 * DecodeFrame: decodes a video frame.
252 *****************************************************************************/
253 static picture_t *DecodeFrame( decoder_t *p_dec, block_t *p_block )
255 decoder_sys_t *p_sys = p_dec->p_sys;
258 /* Get a new picture */
259 p_pic = p_dec->pf_vout_buffer_new( p_dec );
262 block_Release( p_block );
266 FillPicture( p_dec, p_block, p_pic );
268 p_pic->date = p_sys->i_pts;
270 block_Release( p_block );
274 /*****************************************************************************
275 * SendFrame: send a video frame to the stream output.
276 *****************************************************************************/
277 static block_t *SendFrame( decoder_t *p_dec, block_t *p_block )
279 decoder_sys_t *p_sys = p_dec->p_sys;
281 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
286 /*****************************************************************************
287 * CloseDecoder: decoder destruction
288 *****************************************************************************/
289 static void CloseDecoder( vlc_object_t *p_this )
291 decoder_t *p_dec = (decoder_t*)p_this;
292 free( p_dec->p_sys );