/*****************************************************************************
- * lookahead.c: Lookahead slicetype decisions for x264
+ * lookahead.c: high-level lookahead functions
*****************************************************************************
- * Lookahead.c and associated modifications:
- * Copyright (C) 2008 Avail Media
+ * Copyright (C) 2010-2016 Avail Media and x264 project
*
* Authors: Michael Kazmier <mkazmier@availmedia.com>
* Alex Giladi <agiladi@availmedia.com>
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at licensing@x264.com.
*****************************************************************************/
/* LOOKAHEAD (threaded and non-threaded mode)
* # of bframes + # of threads.
*/
#include "common/common.h"
-#include "common/cpu.h"
#include "analyse.h"
-static void x264_lookahead_shift( x264_synch_frame_list_t *dst, x264_synch_frame_list_t *src, int count )
+static void x264_lookahead_shift( x264_sync_frame_list_t *dst, x264_sync_frame_list_t *src, int count )
{
int i = count;
while( i-- )
{
- assert( dst->i_size != dst->i_max_size );
+ assert( dst->i_size < dst->i_max_size );
assert( src->i_size );
dst->list[ dst->i_size++ ] = x264_frame_shift( src->list );
src->i_size--;
new_nonb->i_reference_count++;
}
-#ifdef HAVE_PTHREAD
+#if HAVE_THREAD
static void x264_lookahead_slicetype_decide( x264_t *h )
{
- int bframes = 0;
x264_stack_align( x264_slicetype_decide, h );
- while( IS_X264_TYPE_B( h->lookahead->next.list[bframes]->i_type ) )
- bframes++;
- x264_lookahead_update_last_nonb( h, h->lookahead->next.list[bframes] );
+ x264_lookahead_update_last_nonb( h, h->lookahead->next.list[0] );
+ int shift_frames = h->lookahead->next.list[0]->i_bframes + 1;
x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
while( h->lookahead->ofbuf.i_size == h->lookahead->ofbuf.i_max_size )
x264_pthread_cond_wait( &h->lookahead->ofbuf.cv_empty, &h->lookahead->ofbuf.mutex );
x264_pthread_mutex_lock( &h->lookahead->next.mutex );
- x264_lookahead_shift( &h->lookahead->ofbuf, &h->lookahead->next, bframes + 1 );
+ x264_lookahead_shift( &h->lookahead->ofbuf, &h->lookahead->next, shift_frames );
x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
/* For MB-tree and VBV lookahead, we have to perform propagation analysis on I-frames too. */
if( h->lookahead->b_analyse_keyframe && IS_X264_TYPE_I( h->lookahead->last_nonb->i_type ) )
- x264_stack_align( x264_slicetype_analyse, h, 1 );
+ x264_stack_align( x264_slicetype_analyse, h, shift_frames );
x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
}
-static void x264_lookahead_thread( x264_t *h )
+static void *x264_lookahead_thread( x264_t *h )
{
- int shift;
-#ifdef HAVE_MMX
- if( h->param.cpu&X264_CPU_SSE_MISALIGN )
- x264_cpu_mask_misalign_sse();
-#endif
- h->lookahead->b_thread_active = 1;
while( !h->lookahead->b_exit_thread )
{
x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
x264_pthread_mutex_lock( &h->lookahead->next.mutex );
- shift = X264_MIN( h->lookahead->next.i_max_size - h->lookahead->next.i_size, h->lookahead->ifbuf.i_size );
+ int shift = X264_MIN( h->lookahead->next.i_max_size - h->lookahead->next.i_size, h->lookahead->ifbuf.i_size );
x264_lookahead_shift( &h->lookahead->next, &h->lookahead->ifbuf, shift );
x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
- if( h->lookahead->next.i_size <= h->lookahead->i_slicetype_length )
+ if( h->lookahead->next.i_size <= h->lookahead->i_slicetype_length + h->param.b_vfr_input )
{
while( !h->lookahead->ifbuf.i_size && !h->lookahead->b_exit_thread )
x264_pthread_cond_wait( &h->lookahead->ifbuf.cv_fill, &h->lookahead->ifbuf.mutex );
x264_lookahead_slicetype_decide( h );
}
} /* end of input frames */
- x264_pthread_mutex_lock( &h->lookahead->next.mutex );
x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
+ x264_pthread_mutex_lock( &h->lookahead->next.mutex );
x264_lookahead_shift( &h->lookahead->next, &h->lookahead->ifbuf, h->lookahead->ifbuf.i_size );
- x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
+ x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
while( h->lookahead->next.i_size )
x264_lookahead_slicetype_decide( h );
+ x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
h->lookahead->b_thread_active = 0;
+ x264_pthread_cond_broadcast( &h->lookahead->ofbuf.cv_fill );
+ x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
+ return NULL;
}
#endif
{
x264_lookahead_t *look;
CHECKED_MALLOCZERO( look, sizeof(x264_lookahead_t) );
- int i;
- for( i = 0; i < h->param.i_threads; i++ )
+ for( int i = 0; i < h->param.i_threads; i++ )
h->thread[i]->lookahead = look;
- look->i_last_idr = - h->param.i_keyint_max;
+ look->i_last_keyframe = - h->param.i_keyint_max;
look->b_analyse_keyframe = (h->param.rc.b_mb_tree || (h->param.rc.i_vbv_buffer_size && h->param.rc.i_lookahead))
&& !h->param.rc.b_stat_read;
look->i_slicetype_length = i_slicetype_length;
/* init frame lists */
- if( x264_synch_frame_list_init( &look->ifbuf, h->param.i_sync_lookahead+3 ) ||
- x264_synch_frame_list_init( &look->next, h->frames.i_delay+3 ) ||
- x264_synch_frame_list_init( &look->ofbuf, h->frames.i_delay+3 ) )
+ if( x264_sync_frame_list_init( &look->ifbuf, h->param.i_sync_lookahead+3 ) ||
+ x264_sync_frame_list_init( &look->next, h->frames.i_delay+3 ) ||
+ x264_sync_frame_list_init( &look->ofbuf, h->frames.i_delay+3 ) )
goto fail;
if( !h->param.i_sync_lookahead )
x264_t *look_h = h->thread[h->param.i_threads];
*look_h = *h;
- if( x264_macroblock_cache_init( look_h ) )
+ if( x264_macroblock_cache_allocate( look_h ) )
+ goto fail;
+
+ if( x264_macroblock_thread_allocate( look_h, 1 ) < 0 )
goto fail;
- if( x264_pthread_create( &look_h->thread_handle, NULL, (void *)x264_lookahead_thread, look_h ) )
+ if( x264_pthread_create( &look->thread_handle, NULL, (void*)x264_lookahead_thread, look_h ) )
goto fail;
+ look->b_thread_active = 1;
return 0;
fail:
{
if( h->param.i_sync_lookahead )
{
+ x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
h->lookahead->b_exit_thread = 1;
x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
- x264_pthread_join( h->thread[h->param.i_threads]->thread_handle, NULL );
- x264_macroblock_cache_end( h->thread[h->param.i_threads] );
+ x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
+ x264_pthread_join( h->lookahead->thread_handle, NULL );
+ x264_macroblock_cache_free( h->thread[h->param.i_threads] );
+ x264_macroblock_thread_free( h->thread[h->param.i_threads], 1 );
x264_free( h->thread[h->param.i_threads] );
}
- x264_synch_frame_list_delete( &h->lookahead->ifbuf );
- x264_synch_frame_list_delete( &h->lookahead->next );
- x264_synch_frame_list_delete( &h->lookahead->ofbuf );
+ x264_sync_frame_list_delete( &h->lookahead->ifbuf );
+ x264_sync_frame_list_delete( &h->lookahead->next );
if( h->lookahead->last_nonb )
- x264_frame_delete( h->lookahead->last_nonb );
+ x264_frame_push_unused( h, h->lookahead->last_nonb );
+ x264_sync_frame_list_delete( &h->lookahead->ofbuf );
x264_free( h->lookahead );
}
void x264_lookahead_put_frame( x264_t *h, x264_frame_t *frame )
{
if( h->param.i_sync_lookahead )
- x264_synch_frame_list_push( &h->lookahead->ifbuf, frame );
+ x264_sync_frame_list_push( &h->lookahead->ifbuf, frame );
else
- x264_synch_frame_list_push( &h->lookahead->next, frame );
+ x264_sync_frame_list_push( &h->lookahead->next, frame );
}
int x264_lookahead_is_empty( x264_t *h )
{
- return !x264_synch_frame_list_get_size( &h->lookahead->ofbuf ) &&
- !x264_synch_frame_list_get_size( &h->lookahead->next );
+ x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
+ x264_pthread_mutex_lock( &h->lookahead->next.mutex );
+ int b_empty = !h->lookahead->next.i_size && !h->lookahead->ofbuf.i_size;
+ x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
+ x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
+ return b_empty;
}
static void x264_lookahead_encoder_shift( x264_t *h )
{
- int bframes = 0;
- int i_frames = 0;
-
- while( h->lookahead->ofbuf.list[i_frames] )
- {
- while( h->lookahead->b_thread_active && !h->lookahead->ofbuf.i_size )
- x264_pthread_cond_wait( &h->lookahead->ofbuf.cv_fill, &h->lookahead->ofbuf.mutex );
- if( IS_X264_TYPE_B( h->lookahead->ofbuf.list[bframes]->i_type ) )
- bframes++;
- else
- break;
- i_frames++;
- }
- if( h->lookahead->ofbuf.list[i_frames] )
+ if( !h->lookahead->ofbuf.i_size )
+ return;
+ int i_frames = h->lookahead->ofbuf.list[0]->i_bframes + 1;
+ while( i_frames-- )
{
- x264_frame_push( h->frames.current, x264_frame_shift( &h->lookahead->ofbuf.list[bframes] ) );
+ x264_frame_push( h->frames.current, x264_frame_shift( h->lookahead->ofbuf.list ) );
h->lookahead->ofbuf.i_size--;
- if( h->param.b_bframe_pyramid && bframes > 1 )
- {
- x264_frame_t *mid = x264_frame_shift( &h->lookahead->ofbuf.list[bframes/2] );
- h->lookahead->ofbuf.i_size--;
- mid->i_type = X264_TYPE_BREF;
- x264_frame_push( h->frames.current, mid );
- bframes--;
- }
- while( bframes-- )
- {
- x264_frame_push( h->frames.current, x264_frame_shift( h->lookahead->ofbuf.list ) );
- h->lookahead->ofbuf.i_size--;
- }
- x264_pthread_cond_broadcast( &h->lookahead->ofbuf.cv_empty );
}
+ x264_pthread_cond_broadcast( &h->lookahead->ofbuf.cv_empty );
}
void x264_lookahead_get_frames( x264_t *h )
return;
x264_stack_align( x264_slicetype_decide, h );
-
- int bframes=0;
- while( IS_X264_TYPE_B( h->lookahead->next.list[bframes]->i_type ) )
- bframes++;
-
- x264_lookahead_update_last_nonb( h, h->lookahead->next.list[bframes] );
- x264_lookahead_shift( &h->lookahead->ofbuf, &h->lookahead->next, bframes + 1 );
+ x264_lookahead_update_last_nonb( h, h->lookahead->next.list[0] );
+ int shift_frames = h->lookahead->next.list[0]->i_bframes + 1;
+ x264_lookahead_shift( &h->lookahead->ofbuf, &h->lookahead->next, shift_frames );
/* For MB-tree and VBV lookahead, we have to perform propagation analysis on I-frames too. */
if( h->lookahead->b_analyse_keyframe && IS_X264_TYPE_I( h->lookahead->last_nonb->i_type ) )
- x264_stack_align( x264_slicetype_analyse, h, 1 );
+ x264_stack_align( x264_slicetype_analyse, h, shift_frames );
x264_lookahead_encoder_shift( h );
}
projects / x264 / blobdiff