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mpv/libvo/vo_md5sum.c

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/* ------------------------------------------------------------------------- */
/*
* md5sum video output driver
*
* Copyright (C) 2004, 2005, 2006 Ivo van Poorten
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* ------------------------------------------------------------------------- */
/* Global Includes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* ------------------------------------------------------------------------- */
/* Local Includes */
#include "config.h"
#include "subopt-helper.h"
#include "mp_msg.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "libavutil/md5.h"
/* ------------------------------------------------------------------------- */
/* Info */
static const vo_info_t info=
{
"md5sum of each frame",
"md5sum",
"Ivo van Poorten (ivop@euronet.nl)",
""
};
const LIBVO_EXTERN (md5sum)
/* ------------------------------------------------------------------------- */
/* Global Variables */
char *md5sum_outfile = NULL;
FILE *md5sum_fd;
int framenum = 0;
/* ------------------------------------------------------------------------- */
/** \brief An error occured while writing to a file.
*
* The program failed to write data to a file.
* It displays a message and exits the player.
*
* \return nothing It does not return.
*/
static void md5sum_write_error(void) {
mp_tmsg(MSGT_VO, MSGL_ERR, "%s: Error writing file.\n", info.short_name);
}
/* ------------------------------------------------------------------------- */
/** \brief Pre-initialisation.
*
* This function is called before initialising the video output driver. It
* parses all suboptions and sets variables accordingly. If an error occurs
* (like an option being out of range, not having any value or an unknown
* option is stumbled upon) the player will exit. It also sets default
* values if necessary.
*
* \param arg A string containing all the suboptions passed to the video
* output driver.
*
* \return 0 All went well.
*/
static int preinit(const char *arg)
{
const opt_t subopts[] = {
{"outfile", OPT_ARG_MSTRZ, &md5sum_outfile, NULL},
{NULL, 0, NULL, NULL}
};
mp_msg(MSGT_VO, MSGL_V, "%s: %s\n", info.short_name,
"Parsing suboptions.");
md5sum_outfile = strdup("md5sums");
if (subopt_parse(arg, subopts) != 0) {
return -1;
}
mp_msg(MSGT_VO, MSGL_V, "%s: outfile --> %s\n", info.short_name,
md5sum_outfile);
mp_msg(MSGT_VO, MSGL_V, "%s: %s\n", info.short_name,
"Suboptions parsed OK.");
return 0;
}
/* ------------------------------------------------------------------------- */
/** \brief Configure the video output driver.
*
* This functions configures the video output driver. It opens the output
* file to which this driver will write all the MD5 sums. If something
* goes wrong, the player will exit.
*
* \return 0 All went well.
*/
static int config(uint32_t width, uint32_t height, uint32_t d_width,
uint32_t d_height, uint32_t flags, char *title,
uint32_t format)
{
if (vo_config_count > 0 ) { /* Already configured */
return 0;
}
if (strcmp(md5sum_outfile, "-") == 0)
md5sum_fd = stdout;
else
if ( (md5sum_fd = fopen(md5sum_outfile, "w") ) == NULL ) {
mp_msg(MSGT_VO, MSGL_ERR, "\n%s: %s\n", info.short_name,
_("Unable to create output file."));
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s: %s\n",
info.short_name, _("This error has occurred"), strerror(errno) );
return -1;
}
return 0;
}
/* ------------------------------------------------------------------------- */
/** \brief Write MD5 sum to output file.
*
* This function writes an ASCII representation of a 16-byte hexadecimal
* MD5 sum to our output file. The file descriptor is a global variable.
*
* \param md5sum Sixteen bytes that represent an MD5 sum.
*
* \return None The player will exit if a write error occurs.
*/
static void md5sum_output_sum(unsigned char *md5sum) {
int i;
for(i=0; i<16; i++) {
if ( fprintf(md5sum_fd, "%02x", md5sum[i]) < 0 ) md5sum_write_error();
}
if ( fprintf(md5sum_fd, " frame%08d\n", framenum) < 0 )
md5sum_write_error();
framenum++;
}
/* ------------------------------------------------------------------------- */
static int draw_frame(uint8_t *src[])
{
mp_msg(MSGT_VO, MSGL_V, "%s: draw_frame() is called!\n", info.short_name);
return -1;
}
/* ------------------------------------------------------------------------- */
static uint32_t draw_image(mp_image_t *mpi)
{
unsigned char md5sum[16];
uint32_t w = mpi->w;
uint32_t h = mpi->h;
uint8_t *rgbimage = mpi->planes[0];
uint8_t *planeY = mpi->planes[0];
uint8_t *planeU = mpi->planes[1];
uint8_t *planeV = mpi->planes[2];
uint32_t strideY = mpi->stride[0];
uint32_t strideU = mpi->stride[1];
uint32_t strideV = mpi->stride[2];
uint8_t md5_context_memory[av_md5_size];
struct AVMD5 *md5_context = (struct AVMD5*) md5_context_memory;
unsigned int i;
if (mpi->flags & MP_IMGFLAG_PLANAR) { /* Planar */
if (mpi->flags & MP_IMGFLAG_YUV) { /* Planar YUV */
av_md5_init(md5_context);
for (i=0; i<h; i++) {
av_md5_update(md5_context, planeY + i * strideY, w);
}
w = w / 2;
h = h / 2;
for (i=0; i<h; i++) {
av_md5_update(md5_context, planeU + i * strideU, w);
}
for (i=0; i<h; i++) {
av_md5_update(md5_context, planeV + i * strideV, w);
}
av_md5_final(md5_context, md5sum);
md5sum_output_sum(md5sum);
return VO_TRUE;
} else { /* Planar RGB */
return VO_FALSE;
}
} else { /* Packed */
if (mpi->flags & MP_IMGFLAG_YUV) { /* Packed YUV */
return VO_FALSE;
} else { /* Packed RGB */
av_md5_sum(md5sum, rgbimage, mpi->w * (mpi->bpp >> 3) * mpi->h);
md5sum_output_sum(md5sum);
return VO_TRUE;
}
}
return VO_FALSE;
}
/* ------------------------------------------------------------------------- */
static int draw_slice(uint8_t *src[], int stride[], int w, int h,
int x, int y)
{
return 0;
}
/* ------------------------------------------------------------------------- */
static int query_format(uint32_t format)
{
switch (format) {
case IMGFMT_RGB24:
case IMGFMT_YV12:
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
default:
return 0;
}
}
/* ------------------------------------------------------------------------- */
static int control(uint32_t request, void *data)
{
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
case VOCTRL_DRAW_IMAGE:
return draw_image(data);
}
return VO_NOTIMPL;
}
/* ------------------------------------------------------------------------- */
static void uninit(void)
{
free(md5sum_outfile);
md5sum_outfile = NULL;
if (md5sum_fd && md5sum_fd != stdout) fclose(md5sum_fd);
}
/* ------------------------------------------------------------------------- */
static void check_events(void)
{
}
/* ------------------------------------------------------------------------- */
static void draw_osd(void)
{
}
/* ------------------------------------------------------------------------- */
static void flip_page (void)
{
}
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