thread.c
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/*****************************************************************************
* thread.c: threaded input
*****************************************************************************
* Copyright (C) 2003-2024 x264 project
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Loren Merritt <lorenm@u.washington.edu>
*
* 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., 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.
*****************************************************************************/
#include "input.h"
#include "common/common.h"
#define thread_input x264_glue3(thread, BIT_DEPTH, input)
typedef struct
{
cli_input_t input;
hnd_t p_handle;
cli_pic_t pic;
x264_threadpool_t *pool;
int next_frame;
int frame_total;
struct thread_input_arg_t *next_args;
} thread_hnd_t;
typedef struct thread_input_arg_t
{
thread_hnd_t *h;
cli_pic_t *pic;
int i_frame;
int status;
} thread_input_arg_t;
static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, cli_input_opt_t *opt )
{
thread_hnd_t *h = malloc( sizeof(thread_hnd_t) );
FAIL_IF_ERR( !h || cli_input.picture_alloc( &h->pic, *p_handle, info->csp, info->width, info->height ),
"x264", "malloc failed\n" );
h->input = cli_input;
h->p_handle = *p_handle;
h->next_frame = -1;
h->next_args = malloc( sizeof(thread_input_arg_t) );
if( !h->next_args )
return -1;
h->next_args->h = h;
h->next_args->status = 0;
h->frame_total = info->num_frames;
if( x264_threadpool_init( &h->pool, 1 ) )
return -1;
*p_handle = h;
return 0;
}
static void read_frame_thread_int( thread_input_arg_t *i )
{
i->status = i->h->input.read_frame( i->pic, i->h->p_handle, i->i_frame );
}
static int read_frame( cli_pic_t *p_pic, hnd_t handle, int i_frame )
{
thread_hnd_t *h = handle;
int ret = 0;
if( h->next_frame >= 0 )
{
x264_threadpool_wait( h->pool, h->next_args );
ret |= h->next_args->status;
}
if( h->next_frame == i_frame )
XCHG( cli_pic_t, *p_pic, h->pic );
else
{
if( h->next_frame >= 0 )
thread_input.release_frame( &h->pic, handle );
ret |= h->input.read_frame( p_pic, h->p_handle, i_frame );
}
if( !h->frame_total || i_frame+1 < h->frame_total )
{
h->next_frame =
h->next_args->i_frame = i_frame+1;
h->next_args->pic = &h->pic;
x264_threadpool_run( h->pool, (void*)read_frame_thread_int, h->next_args );
}
else
h->next_frame = -1;
return ret;
}
static int release_frame( cli_pic_t *pic, hnd_t handle )
{
thread_hnd_t *h = handle;
if( h->input.release_frame )
return h->input.release_frame( pic, h->p_handle );
return 0;
}
static int picture_alloc( cli_pic_t *pic, hnd_t handle, int csp, int width, int height )
{
thread_hnd_t *h = handle;
return h->input.picture_alloc( pic, h->p_handle, csp, width, height );
}
static void picture_clean( cli_pic_t *pic, hnd_t handle )
{
thread_hnd_t *h = handle;
h->input.picture_clean( pic, h->p_handle );
}
static int close_file( hnd_t handle )
{
thread_hnd_t *h = handle;
x264_threadpool_delete( h->pool );
h->input.picture_clean( &h->pic, h->p_handle );
h->input.close_file( h->p_handle );
free( h->next_args );
free( h );
return 0;
}
const cli_input_t thread_input = { open_file, picture_alloc, read_frame, release_frame, picture_clean, close_file };