-/*******************************************************************************
+/*****************************************************************************
* 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 <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 "video_parser.h"
-#include "undec_picture.h"
-#include "video_fifo.h"
+#include "vdec_motion.h"
#include "video_decoder.h"
+#include "vpar_blocks.h"
+#include "vpar_headers.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 DecodePicture ( vdec_thread_t *p_vdec,
- undec_picture_t * p_undec_p );
-/*******************************************************************************
+/*****************************************************************************
* 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 );
}
/* Spawn the video decoder thread */
if ( vlc_thread_create(&p_vdec->thread_id, "video decoder",
- (vlc_thread_func)RunThread, (void *)p_vdec) )
+ (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;
+#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 */
vlc_thread_join( p_vdec->thread_id );
/* 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 )
+ *****************************************************************************/
+#ifdef VDEC_SMP
+static int vdec_InitThread( vdec_thread_t *p_vdec )
+#else
+int vdec_InitThread( vdec_thread_t *p_vdec )
+#endif
{
- 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;
+ intf_DbgMsg("vdec debug: initializing video decoder thread %p", p_vdec);
+
+ 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;
+
+ p_vdec->pf_decode_init( p_vdec );
+
+#ifdef VDEC_SMP
+ /* Re-nice ourself */
+ if( nice(VDEC_NICE) == -1 )
+ {
+ intf_WarnMsg( 2, "vdec warning : couldn't nice() (%s)",
+ strerror(errno) );
+ }
#endif
/* Mark thread as running and return */
- intf_DbgMsg("vdec debug: InitThread(%p) succeeded\n", p_vdec);
- return( 0 );
+ 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;
+
+ /* Wait until a `die' order */
+ while( !p_vdec->b_die )
+ {
+ p_mb = vpar_GetMacroblock( &p_vdec->p_vpar->vfifo );
+ vpar_DestroyMacroblock( &p_vdec->p_vpar->vfifo, p_mb );
+ }
+}
+
+/*****************************************************************************
+ * EndThread: thread destruction
+ *****************************************************************************
+ * 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)", p_vdec);
+}
+
+/*****************************************************************************
* RunThread: video decoder thread
- *******************************************************************************
+ *****************************************************************************
* Video decoder thread. This function does only return when the thread is
- * terminated.
- *******************************************************************************/
+ * terminated.
+ *****************************************************************************/
static void RunThread( vdec_thread_t *p_vdec )
{
- intf_DbgMsg("vdec debug: running video decoder thread (%p) (pid == %i)\n",
+ intf_DbgMsg("vdec debug: running video decoder thread (%p) (pid == %i)",
p_vdec, getpid());
- /*
- * Initialize thread and free configuration
+ /*
+ * Initialize thread and free configuration
*/
- p_vdec->b_error = InitThread( p_vdec );
+ p_vdec->b_error = vdec_InitThread( p_vdec );
if( p_vdec->b_error )
{
return;
*/
while( (!p_vdec->b_die) && (!p_vdec->b_error) )
{
- undec_picture_t * p_undec_p;
-
- if( (p_undec_p = GetPicture( p_vdec->p_vpar->p_fifo )) != NULL )
+ macroblock_t * p_mb;
+
+ if( (p_mb = vpar_GetMacroblock( &p_vdec->p_vpar->vfifo )) != NULL )
{
- DecodePicture( p_vdec, p_undec_p );
+ p_vdec->pf_decode_mb_c( p_vdec, p_mb );
}
- }
+ }
/*
* Error loop
*/
if( p_vdec->b_error )
{
- ErrorThread( p_vdec );
+ ErrorThread( p_vdec );
}
/* End of thread */
p_vdec->b_run = 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 )
-{
- undec_picture_t * p_undec_p;
-
- /* Wait until a `die' order */
- while( !p_vdec->b_die )
- {
- p_undec_p = GetPicture( p_vdec->p_vpar.vfifo );
- DestroyPicture( p_vdec->p_vpar.vfifo, p_undec_p );
-
- /* Sleep a while */
- msleep( VDEC_IDLE_SLEEP );
- }
-}
-
-/*******************************************************************************
- * EndThread: thread destruction
- *******************************************************************************
- * This function is called when the thread ends after a sucessfull
- * initialization.
- *******************************************************************************/
-static void EndThread( vdec_thread_t *p_vdec )
-{
- intf_DbgMsg("vdec debug: EndThread(%p)\n", p_vdec);
-}
-
-/*******************************************************************************
- * DecodePicture : decode a picture
- *******************************************************************************/
-static void DecodePicture( vdec_thread_t *p_vdec, undec_picture_t * p_undec_p )
-{
- static int pi_chroma_nb_blocks[4] = {0, 1, 2, 4};
- static int pi_chroma_nb_coeffs[4] = {0, 64, 128, 256};
- static f_motion_mb_t ppf_chroma_motion[4] = { NULL,
- &vdec_MotionMacroBlock420,
- &vdec_MotionMacroBlock422,
- &vdec_MotionMacroBlock444 };
- static f_motion_t pppf_motion_forward[4][2] = {
- {NULL, NULL} /* I picture */
- {&vdec_MotionForward, &vdec_MotionForward} /* P */
- {NULL, &vdec_MotionForward} /* B */
- {NULL, NULL} /* D */ };
- static f_motion_t pppf_motion_backward[4][2] = {
- {NULL, NULL} /* I picture */
- {NULL, NULL} /* P */
- {NULL, &vdec_MotionBackward} /* B */
- {NULL, NULL} /* D */ };
- static f_motion_t ppf_motion[4] = { NULL,
- &vdec_MotionTopFirst,
- &vdec_MotionBottomFirst,
- &vdec_MotionFrame };
-
- int i_mb, i_b, i_totb;
- coeff_t * p_y, p_u, p_v;
- f_motion_mb_t pf_chroma_motion;
- f_motion_t pf_motion_forward, pf_motion_backward;
- int i_chroma_nb_blocks, i_chroma_nb_coeffs;
-
- p_y = (coeff_t *)p_undec_p->p_picture->p_y;
- p_u = (coeff_t *)p_undec_p->p_picture->p_u;
- p_v = (coeff_t *)p_undec_p->p_picture->p_v;
-
-#define I_chroma_format p_undec_p->p_picture->i_chroma_format
- pf_chroma_motion = ppf_chroma_motion[I_chroma_format];
- pf_motion_forward
- pf_motion = ppf_motion[p_undec_p->i_structure];
-
- i_chroma_nb_blocks = pi_chroma_nb_blocks[I_chroma_format];
- i_chroma_nb_coeffs = pi_chroma_nb_coeffs[I_chroma_format];
-#undef I_chroma_format
-
- for( i_mb = 0; i_mb < p_undec_p->i_mb_height*p_undec_p->i_mb_width; i_mb++ )
- {
-#define P_mb_info p_undec_p->p_mb_info[i_ref]
-
- /*
- * Inverse DCT (ISO/IEC 13818-2 section Annex A)
- */
-
- /* Luminance : always 4 blocks */
- for( i_b = 0; i_b < 4; i_b++ )
- {
- (*P_mb_info.p_idct_function[i_b])( p_y + i_b*64 );
- }
- i_totb = 4;
-
- /* Chrominance Cr */
- for( i_b = 0; i_b < i_chroma_nb_blocks\ 5; i_b++ )
- {
- (*P_mb_info.p_idct_function[i_totb + i_b])( p_u + i_b*64 );
- }
- i_totb += i_chroma_nb_blocks;
-
- /* Chrominance Cb */
- for( i_b = 0; i_b < i_chroma_nb_blocks; i_b++ )
- {
- (*P_mb_info.p_idct_function[i_totb + i_b])( p_v + i_b*64 );
- }
-
- /*
- * Motion Compensation (ISO/IEC 13818-2 section 7.6)
- */
- (*pf_motion)( p_vdec, p_undec_p, i_mb, pf_chroma_motion );
-
- p_y += 256;
- p_u += i_chroma_nb_coeffs;
- p_v += i_chroma_nb_coeffs;
-#undef P_mb_info
- }
-
- /*
- * Decoding is finished, mark the picture ready for displaying and free
- * unneeded memory
- */
- vpar_ReleasePicture( p_vdec->p_vpar->p_fifo, p_undec_p );
-}
projects / vlc / blobdiff