-/*******************************************************************************
+/*****************************************************************************
* video_decoder.c : video decoder thread
- * (c)1999 VideoLAN
- *******************************************************************************/
+ *****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ * $Id: video_decoder.c,v 1.50 2001/05/30 17:03:12 sam Exp $
+ *
+ * Authors: Christophe Massiot <massiot@via.ecp.fr>
+ * Gaël Hendryckx <jimmy@via.ecp.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include "defs.h"
-/* ?? passer en terminate/destroy avec les signaux supplémentaires */
+#include <unistd.h> /* getpid() */
-/*******************************************************************************
- * Preamble
- *******************************************************************************/
-//#include "vlc.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/uio.h>
-#include <X11/Xlib.h>
-#include <X11/extensions/XShm.h>
+#include <stdlib.h> /* free() */
+#include <string.h> /* memcpy(), memset() */
+#include <errno.h> /* errno */
#include "config.h"
#include "common.h"
+#include "threads.h"
#include "mtime.h"
-#include "vlc_thread.h"
#include "intf_msg.h"
-#include "debug.h" /* ?? temporaire, requis par netlist.h */
-#include "input.h"
-#include "input_netlist.h"
-#include "decoder_fifo.h"
+#include "stream_control.h"
+#include "input_ext-dec.h"
+
#include "video.h"
#include "video_output.h"
-#include "vdec_idct.h"
-#include "video_decoder.h"
#include "vdec_motion.h"
+#include "video_decoder.h"
#include "vpar_blocks.h"
#include "vpar_headers.h"
-#include "video_fifo.h"
#include "vpar_synchro.h"
#include "video_parser.h"
+#include "video_fifo.h"
/*
* Local prototypes
*/
-static int InitThread ( vdec_thread_t *p_vdec );
+#ifdef VDEC_SMP
+static int vdec_InitThread ( vdec_thread_t *p_vdec );
+#endif
static void RunThread ( vdec_thread_t *p_vdec );
static void ErrorThread ( vdec_thread_t *p_vdec );
static void EndThread ( vdec_thread_t *p_vdec );
-static void DecodeMacroblock ( vdec_thread_t *p_vdec,
- macroblock_t * p_mb );
-/*******************************************************************************
+/*****************************************************************************
* vdec_CreateThread: create a video decoder thread
- *******************************************************************************
+ *****************************************************************************
* This function creates a new video decoder thread, and returns a pointer
* to its description. On error, it returns NULL.
* Following configuration properties are used:
- * ??
- *******************************************************************************/
+ * XXX??
+ *****************************************************************************/
vdec_thread_t * vdec_CreateThread( vpar_thread_t *p_vpar /*, int *pi_status */ )
{
vdec_thread_t * p_vdec;
- intf_DbgMsg("vdec debug: creating video decoder thread\n");
+ intf_DbgMsg("vdec debug: creating video decoder thread");
/* Allocate the memory needed to store the thread's structure */
if ( (p_vdec = (vdec_thread_t *)malloc( sizeof(vdec_thread_t) )) == NULL )
{
- intf_ErrMsg("vdec error: not enough memory for vdec_CreateThread() to create the new thread\n");
+ intf_ErrMsg("vdec error: not enough memory for vdec_CreateThread() to create the new thread");
return( NULL );
}
if ( vlc_thread_create(&p_vdec->thread_id, "video decoder",
(vlc_thread_func_t)RunThread, (void *)p_vdec) )
{
- intf_ErrMsg("vdec error: can't spawn video decoder thread\n");
+ intf_ErrMsg("vdec error: can't spawn video decoder thread");
free( p_vdec );
return( NULL );
}
- intf_DbgMsg("vdec debug: video decoder thread (%p) created\n", p_vdec);
+ intf_DbgMsg("vdec debug: video decoder thread (%p) created", p_vdec);
return( p_vdec );
}
-/*******************************************************************************
+/*****************************************************************************
* vdec_DestroyThread: destroy a video decoder thread
- *******************************************************************************
+ *****************************************************************************
* Destroy and terminate thread. This function will return 0 if the thread could
* be destroyed, and non 0 else. The last case probably means that the thread
* was still active, and another try may succeed.
- *******************************************************************************/
+ *****************************************************************************/
void vdec_DestroyThread( vdec_thread_t *p_vdec /*, int *pi_status */ )
{
- intf_DbgMsg("vdec debug: requesting termination of video decoder thread %p\n", p_vdec);
+ intf_DbgMsg("vdec debug: requesting termination of video decoder thread %p", p_vdec);
/* Ask thread to kill itself */
p_vdec->b_die = 1;
- /* Make sure the parser thread leaves the GetByte() function */
+
+#ifdef VDEC_SMP
+ /* Make sure the decoder thread leaves the vpar_GetMacroblock() function */
vlc_mutex_lock( &(p_vdec->p_vpar->vfifo.lock) );
vlc_cond_signal( &(p_vdec->p_vpar->vfifo.wait) );
vlc_mutex_unlock( &(p_vdec->p_vpar->vfifo.lock) );
-
+#endif
/* Waiting for the decoder thread to exit */
/* Remove this as soon as the "status" flag is implemented */
/* following functions are local */
-/*******************************************************************************
- * InitThread: initialize video decoder thread
- *******************************************************************************
+/*****************************************************************************
+ * vdec_InitThread: initialize video decoder thread
+ *****************************************************************************
* This function is called from RunThread and performs the second step of the
* initialization. It returns 0 on success. Note that the thread's flag are not
* modified inside this function.
- *******************************************************************************/
-static int InitThread( vdec_thread_t *p_vdec )
-{
- int i_dummy;
-
- intf_DbgMsg("vdec debug: initializing video decoder thread %p\n", p_vdec);
-
- /* Initialize other properties */
-#ifdef STATS
- p_vdec->c_loops = 0;
- p_vdec->c_idle_loops = 0;
- p_vdec->c_decoded_pictures = 0;
- p_vdec->c_decoded_i_pictures = 0;
- p_vdec->c_decoded_p_pictures = 0;
- p_vdec->c_decoded_b_pictures = 0;
+ *****************************************************************************/
+#ifdef VDEC_SMP
+static int vdec_InitThread( vdec_thread_t *p_vdec )
+#else
+int vdec_InitThread( vdec_thread_t *p_vdec )
#endif
-
- /* Init crop table */
- p_vdec->pi_crop = p_vdec->pi_crop_buf + (VDEC_CROPRANGE >> 1);
- for( i_dummy = -(VDEC_CROPRANGE >> 1); i_dummy < 0; i_dummy++ )
- {
- p_vdec->pi_crop[i_dummy] = 0;
- }
- for( ; i_dummy < 255; i_dummy ++ )
- {
- p_vdec->pi_crop[i_dummy] = i_dummy;
- }
- for( ; i_dummy < (VDEC_CROPRANGE >> 1) -1; i_dummy++ )
- {
- p_vdec->pi_crop[i_dummy] = 255;
- }
-
- /* Mark thread as running and return */
- intf_DbgMsg("vdec debug: InitThread(%p) succeeded\n", p_vdec);
- return( 0 );
-}
-
-/*******************************************************************************
- * RunThread: video decoder thread
- *******************************************************************************
- * Video decoder thread. This function does only return when the thread is
- * terminated.
- *******************************************************************************/
-static void RunThread( vdec_thread_t *p_vdec )
{
- intf_DbgMsg("vdec debug: running video decoder thread (%p) (pid == %i)\n",
- p_vdec, getpid());
+ intf_DbgMsg("vdec debug: initializing video decoder thread %p", p_vdec);
- /*
- * Initialize thread and free configuration
- */
- p_vdec->b_error = InitThread( p_vdec );
- if( p_vdec->b_error )
- {
- return;
- }
- p_vdec->b_run = 1;
+ p_vdec->pf_decode_init = p_vdec->p_vpar->pf_decode_init;
+ p_vdec->pf_decode_mb_c = p_vdec->p_vpar->pf_decode_mb_c;
+ p_vdec->pf_decode_mb_bw = p_vdec->p_vpar->pf_decode_mb_bw;
- /*
- * Main loop - it is not executed if an error occured during
- * initialization
- */
- while( (!p_vdec->b_die) && (!p_vdec->b_error) )
- {
- macroblock_t * p_mb;
+ p_vdec->pf_decode_init( p_vdec );
- if( (p_mb = vpar_GetMacroblock( &p_vdec->p_vpar->vfifo )) != NULL )
- {
- DecodeMacroblock( p_vdec, p_mb );
- }
- }
-
- /*
- * Error loop
- */
- if( p_vdec->b_error )
+#ifdef VDEC_SMP
+ /* Re-nice ourself */
+ if( nice(VDEC_NICE) == -1 )
{
- ErrorThread( p_vdec );
+ intf_WarnMsg( 2, "vdec warning : couldn't nice() (%s)",
+ strerror(errno) );
}
+#endif
- /* End of thread */
- EndThread( p_vdec );
- p_vdec->b_run = 0;
+ /* Mark thread as running and return */
+ intf_DbgMsg("vdec debug: InitThread(%p) succeeded", p_vdec);
+ return( 0 );
}
-/*******************************************************************************
+/*****************************************************************************
* ErrorThread: RunThread() error loop
- *******************************************************************************
+ *****************************************************************************
* This function is called when an error occured during thread main's loop. The
* thread can still receive feed, but must be ready to terminate as soon as
* possible.
- *******************************************************************************/
+ *****************************************************************************/
static void ErrorThread( vdec_thread_t *p_vdec )
{
macroblock_t * p_mb;
}
}
-/*******************************************************************************
+/*****************************************************************************
* EndThread: thread destruction
- *******************************************************************************
- * This function is called when the thread ends after a sucessfull
+ *****************************************************************************
+ * This function is called when the thread ends after a sucessful
* initialization.
- *******************************************************************************/
+ *****************************************************************************/
static void EndThread( vdec_thread_t *p_vdec )
{
- intf_DbgMsg("vdec debug: EndThread(%p)\n", p_vdec);
+ intf_DbgMsg("vdec debug: EndThread(%p)", p_vdec);
}
-/*******************************************************************************
- * DecodeMacroblock : decode a macroblock of a picture
- *******************************************************************************/
-static void DecodeMacroblock( vdec_thread_t *p_vdec, macroblock_t * p_mb )
+/*****************************************************************************
+ * RunThread: video decoder thread
+ *****************************************************************************
+ * Video decoder thread. This function does only return when the thread is
+ * terminated.
+ *****************************************************************************/
+static void RunThread( vdec_thread_t *p_vdec )
{
- int i_b;
+ intf_DbgMsg("vdec debug: running video decoder thread (%p) (pid == %i)",
+ p_vdec, getpid());
/*
- * Motion Compensation (ISO/IEC 13818-2 section 7.6)
+ * Initialize thread and free configuration
*/
- (*p_mb->pf_motion)( p_mb );
-
- /* luminance */
- for( i_b = 0; i_b < 4; i_b++ )
- {
- /*
- * Inverse DCT (ISO/IEC 13818-2 section Annex A)
- */
- (p_mb->pf_idct[i_b])( p_vdec, p_mb->ppi_blocks[i_b],
- p_mb->pi_sparse_pos[i_b] );
-
- /*
- * Adding prediction and coefficient data (ISO/IEC 13818-2 section 7.6.8)
- */
- (p_mb->pf_addb[i_b])( p_vdec, p_mb->ppi_blocks[i_b],
- p_mb->p_data[i_b], p_mb->i_addb_l_stride );
- }
-
- /* chrominance */
- for( i_b = 4; i_b < 4 + p_mb->i_chroma_nb_blocks; i_b++ )
+ p_vdec->b_error = vdec_InitThread( p_vdec );
+ if( p_vdec->b_error )
{
- /*
- * Inverse DCT (ISO/IEC 13818-2 section Annex A)
- */
- (p_mb->pf_idct[i_b])( p_vdec, p_mb->ppi_blocks[i_b],
- p_mb->pi_sparse_pos[i_b] );
-
- /*
- * Adding prediction and coefficient data (ISO/IEC 13818-2 section 7.6.8)
- */
- (p_mb->pf_addb[i_b])( p_vdec, p_mb->ppi_blocks[i_b],
- p_mb->p_data[i_b], p_mb->i_addb_c_stride );
+ return;
}
+ p_vdec->b_run = 1;
/*
- * Decoding is finished, release the macroblock and free
- * unneeded memory.
+ * Main loop - it is not executed if an error occured during
+ * initialization
*/
- vpar_ReleaseMacroblock( &p_vdec->p_vpar->vfifo, p_mb );
-}
-
-/*******************************************************************************
- * vdec_AddBlock : add a block
- *******************************************************************************/
-void vdec_AddBlock( vdec_thread_t * p_vdec, dctelem_t * p_block, yuv_data_t * p_data, int i_incr )
-{
- int i_x, i_y;
-
- for( i_y = 0; i_y < 8; i_y++ )
+ while( (!p_vdec->b_die) && (!p_vdec->b_error) )
{
- for( i_x = 0; i_x < 8; i_x++ )
+ macroblock_t * p_mb;
+
+ if( (p_mb = vpar_GetMacroblock( &p_vdec->p_vpar->vfifo )) != NULL )
{
- *p_data = p_vdec->pi_crop[*p_data + *p_block++];
- p_data++;
+ p_vdec->pf_decode_mb_c( p_vdec, p_mb );
}
- p_data += i_incr;
}
-}
-/*******************************************************************************
- * vdec_CopyBlock : copy a block
- *******************************************************************************/
-void vdec_CopyBlock( vdec_thread_t * p_vdec, dctelem_t * p_block, yuv_data_t * p_data, int i_incr )
-{
- int i_y;
-//fprintf(stderr, "%d ", i_incr );
-
- for( i_y = 0; i_y < 8; i_y++ )
+ /*
+ * Error loop
+ */
+ if( p_vdec->b_error )
{
-#if 0
- /* dctelem_t and yuv_data_t are the same */
- memcpy( p_data, p_block, 8*sizeof(yuv_data_t) );
- p_data += i_incr+8;
- p_block += 8;
-#else
- int i_x;
-
- for( i_x = 0; i_x < 8; i_x++ )
- {
- /* ??? Need clip to be MPEG-2 compliant */
- /* ??? Why does the reference decoder add 128 ??? */
- *p_data++ = p_vdec->pi_crop[*p_block++];
- }
- p_data += i_incr;
-#endif
+ ErrorThread( p_vdec );
}
-}
-/*******************************************************************************
- * vdec_DummyBlock : dummy function that does nothing
- *******************************************************************************/
-void vdec_DummyBlock( vdec_thread_t * p_vdec, dctelem_t * p_block, yuv_data_t * p_data, int i_incr )
-{
+ /* End of thread */
+ EndThread( p_vdec );
+ p_vdec->b_run = 0;
}
+
projects / vlc / blobdiff