142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/*
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* video_out_pgm.c
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* Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "video_out.h"
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typedef struct {
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vo_instance_t vo;
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int framenum;
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int width;
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int height;
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char header[1024];
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char filename[128];
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} pgm_instance_t;
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static void internal_draw_frame (pgm_instance_t * instance,
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FILE * file, uint8_t * const * buf)
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{
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int i;
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fwrite (instance->header, strlen (instance->header), 1, file);
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fwrite (buf[0], instance->width, instance->height, file);
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for (i = 0; i < instance->height >> 1; i++) {
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fwrite (buf[1] + i * (instance->width >> 1), instance->width >> 1, 1,
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file);
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fwrite (buf[2] + i * (instance->width >> 1), instance->width >> 1, 1,
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file);
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}
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}
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static void pgm_draw_frame (vo_instance_t * _instance,
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uint8_t * const * buf, void * id)
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{
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pgm_instance_t * instance;
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FILE * file;
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instance = (pgm_instance_t *) _instance;
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sprintf (instance->filename, "%d.pgm", instance->framenum++);
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file = fopen (instance->filename, "wb");
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if (!file)
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return;
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internal_draw_frame (instance, file, buf);
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fclose (file);
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}
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static int pgm_setup (vo_instance_t * _instance, int width, int height,
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vo_setup_result_t * result)
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{
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pgm_instance_t * instance;
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instance = (pgm_instance_t *) _instance;
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instance->width = width;
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instance->height = height;
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sprintf (instance->header, "P5\n%d %d\n255\n", width, height * 3 / 2);
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result->convert = NULL;
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return 0;
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}
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static vo_instance_t * internal_open (void draw (vo_instance_t *,
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uint8_t * const *, void *))
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{
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pgm_instance_t * instance;
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instance = (pgm_instance_t *) malloc (sizeof (pgm_instance_t));
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if (instance == NULL)
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return NULL;
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instance->vo.setup = pgm_setup;
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instance->vo.setup_fbuf = NULL;
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instance->vo.set_fbuf = NULL;
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instance->vo.start_fbuf = NULL;
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instance->vo.draw = draw;
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instance->vo.discard = NULL;
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instance->vo.close = NULL;
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instance->framenum = 0;
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return (vo_instance_t *) instance;
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}
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vo_instance_t * vo_pgm_open (void)
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{
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return internal_open (pgm_draw_frame);
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}
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static void pgmpipe_draw_frame (vo_instance_t * _instance,
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uint8_t * const * buf, void * id)
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{
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pgm_instance_t * instance;
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instance = (pgm_instance_t *) _instance;
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internal_draw_frame (instance, stdout, buf);
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}
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vo_instance_t * vo_pgmpipe_open (void)
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{
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return internal_open (pgmpipe_draw_frame);
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}
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static void md5_draw_frame (vo_instance_t * _instance,
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uint8_t * const * buf, void * id)
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{
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pgm_instance_t * instance;
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char command[100];
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instance = (pgm_instance_t *) _instance;
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pgm_draw_frame (_instance, buf, id);
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sprintf (command, "md5sum -b %s", instance->filename);
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system (command);
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remove (instance->filename);
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}
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vo_instance_t * vo_md5_open (void)
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{
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return internal_open (md5_draw_frame);
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}
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