1 /*****************************************************************************
2 * video_fifo.h : FIFO for the pool of video_decoders
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
30 *****************************************************************************/
32 /*****************************************************************************
34 *****************************************************************************/
37 /* FIXME: move to inline functions ??*/
38 #define VIDEO_FIFO_ISEMPTY( fifo ) ( (fifo).i_start == (fifo).i_end )
39 #define VIDEO_FIFO_ISFULL( fifo ) ( ( ( (fifo).i_end + 1 - (fifo).i_start )\
41 #define VIDEO_FIFO_START( fifo ) ( (fifo).buffer[ (fifo).i_start ] )
42 #define VIDEO_FIFO_INCSTART( fifo ) ( (fifo).i_start = ((fifo).i_start + 1) \
44 #define VIDEO_FIFO_END( fifo ) ( (fifo).buffer[ (fifo).i_end ] )
45 #define VIDEO_FIFO_INCEND( fifo ) ( (fifo).i_end = ((fifo).i_end + 1) \
49 /*****************************************************************************
50 * vpar_GetMacroblock : return a macroblock to be decoded
51 *****************************************************************************/
52 static __inline__ macroblock_t * vpar_GetMacroblock( video_fifo_t * p_fifo )
57 vlc_mutex_lock( &p_fifo->lock );
58 while( VIDEO_FIFO_ISEMPTY( *p_fifo ) )
60 vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
61 if( p_fifo->p_vpar->b_die )
63 vlc_mutex_unlock( &p_fifo->lock );
68 p_mb = VIDEO_FIFO_START( *p_fifo );
69 VIDEO_FIFO_INCSTART( *p_fifo );
71 vlc_mutex_unlock( &p_fifo->lock );
75 /* Shouldn't normally be used without SMP. */
80 /*****************************************************************************
81 * vpar_NewMacroblock : return a buffer for the parser
82 *****************************************************************************/
83 static __inline__ macroblock_t * vpar_NewMacroblock( video_fifo_t * p_fifo )
88 #define P_buffer p_fifo->p_vpar->vbuffer
89 vlc_mutex_lock( &P_buffer.lock );
90 while( P_buffer.i_index == -1 )
92 /* No more structures available. This should not happen ! */
93 intf_DbgMsg("vpar debug: macroblock list is empty, delaying\n");
94 vlc_mutex_unlock( &P_buffer.lock );
95 if( p_fifo->p_vpar->b_die )
99 msleep(VPAR_OUTMEM_SLEEP);
100 vlc_mutex_lock( &P_buffer.lock );
103 p_mb = P_buffer.pp_mb_free[ P_buffer.i_index-- ];
105 vlc_mutex_unlock( &P_buffer.lock );
109 return( &p_fifo->buffer );
113 /*****************************************************************************
114 * vpar_DecodeMacroblock : put a macroblock in the video fifo
115 *****************************************************************************/
116 static __inline__ void vpar_DecodeMacroblock( video_fifo_t * p_fifo,
117 macroblock_t * p_mb )
120 /* Place picture in the video FIFO */
121 vlc_mutex_lock( &p_fifo->lock );
123 /* By construction, the video FIFO cannot be full */
124 VIDEO_FIFO_END( *p_fifo ) = p_mb;
125 VIDEO_FIFO_INCEND( *p_fifo );
127 vlc_mutex_unlock( &p_fifo->lock );
129 /* Shouldn't normally be used without SMP. */
132 /*****************************************************************************
133 * vpar_ReleaseMacroblock : release a macroblock and put the picture in the
134 * video output heap, if it is finished
135 *****************************************************************************/
136 static __inline__ void vpar_ReleaseMacroblock( video_fifo_t * p_fifo,
137 macroblock_t * p_mb )
140 boolean_t b_finished;
142 /* Unlink picture buffer */
143 vlc_mutex_lock( &p_mb->p_picture->lock_deccount );
144 p_mb->p_picture->i_deccount--;
145 b_finished = (p_mb->p_picture->i_deccount == 1);
146 vlc_mutex_unlock( &p_mb->p_picture->lock_deccount );
147 //fprintf(stderr, "%d ", p_mb->p_picture->i_deccount);
148 /* Test if it was the last block of the picture */
151 //fprintf(stderr, "Image decodee\n");
152 /* Mark the picture to be displayed */
153 vout_DisplayPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
155 /* Warn Synchro for its records. */
156 vpar_SynchroEnd( p_fifo->p_vpar );
158 /* Unlink referenced pictures */
159 if( p_mb->p_forward != NULL )
161 vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_forward );
163 if( p_mb->p_backward != NULL )
165 vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_backward );
169 /* Release the macroblock_t structure */
170 #define P_buffer p_fifo->p_vpar->vbuffer
171 vlc_mutex_lock( &P_buffer.lock );
172 P_buffer.pp_mb_free[ ++P_buffer.i_index ] = p_mb;
173 vlc_mutex_unlock( &P_buffer.lock );
177 p_mb->p_picture->i_deccount--;
178 if( p_mb->p_picture->i_deccount == 1 )
180 /* Mark the picture to be displayed */
181 vout_DisplayPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
183 /* Warn Synchro for its records. */
184 vpar_SynchroEnd( p_fifo->p_vpar );
189 /*****************************************************************************
190 * vpar_DestroyMacroblock : destroy a macroblock in case of error
191 *****************************************************************************/
192 static __inline__ void vpar_DestroyMacroblock( video_fifo_t * p_fifo,
193 macroblock_t * p_mb )
196 boolean_t b_finished;
198 /* Unlink picture buffer */
199 vlc_mutex_lock( &p_mb->p_picture->lock_deccount );
200 p_mb->p_picture->i_deccount--;
201 b_finished = (p_mb->p_picture->i_deccount == 1);
202 vlc_mutex_unlock( &p_mb->p_picture->lock_deccount );
204 /* Test if it was the last block of the picture */
207 fprintf(stderr, "Image trashee\n");
208 /* Mark the picture to be trashed */
209 vout_DestroyPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
211 /* Warn Synchro for its records. */
212 vpar_SynchroEnd( p_fifo->p_vpar );
214 /* Unlink referenced pictures */
215 if( p_mb->p_forward != NULL )
217 vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_forward );
219 if( p_mb->p_backward != NULL )
221 vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_backward );
225 /* Release the macroblock_t structure */
226 #define P_buffer p_fifo->p_vpar->vbuffer
227 vlc_mutex_lock( &P_buffer.lock );
228 P_buffer.pp_mb_free[ ++P_buffer.i_index ] = p_mb;
229 vlc_mutex_unlock( &P_buffer.lock );
233 p_mb->p_picture->i_deccount--;
234 if( p_mb->p_picture->i_deccount == 1 )
236 /* Mark the picture to be trashed */
237 vout_DestroyPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
239 /* Warn Synchro for its records. */
240 vpar_SynchroEnd( p_fifo->p_vpar );
245 /*****************************************************************************
247 *****************************************************************************/
248 void vpar_InitFIFO( struct vpar_thread_s * p_vpar );