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mpv/libvo/vo_jpeg.c
wm4 a1244111a7 windows support: unicode filenames 
Windows uses a legacy codepage for char* / runtime functions accepting
char *. Using UTF-8 as the codepage with setlocale() is explicitly
forbidden.

Work this around by overriding the MSVCRT functions with wrapper
macros, that assume UTF-8 and use "proper" API calls like _wopen etc.
to deal with unicode filenames. All code that uses standard functions
that take or return filenames must now include osdep/io.h. stat()
can't be overridden, because MinGW-w64 itself defines "stat" as a
macro. Change code to use use mp_stat() instead.

This is not perfectly clean, but still somewhat sane, and much better
than littering the rest of the mplayer code with MinGW specific hacks.
It's also a bit fragile, but that's actually little different from the
previous situation. Also, MinGW is unlikely to ever include a nice way
of dealing with this.
2012-03-09 20:48:54 +02:00

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/*
* JPEG Renderer for MPlayer
*
* Copyright (C) 2002 by Pontscho <pontscho@makacs.poliod.hu>
* Copyright (C) 2003 by Alex
* Copyright (C) 2004, 2005 by Ivo van Poorten <ivop@euronet.nl>
*
* 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>
#include <jpeglib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
/* ------------------------------------------------------------------------- */
/* Local Includes */
#include "config.h"
#include "subopt-helper.h"
#include "mp_msg.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "mplayer.h" /* for exit_player_bad() */
#include "osdep/io.h"
/* ------------------------------------------------------------------------- */
/* Defines */
/* Used for temporary buffers to store file- and pathnames */
#define BUFLENGTH 512
/* ------------------------------------------------------------------------- */
/* Info */
static const vo_info_t info=
{
"JPEG file",
"jpeg",
"Zoltan Ponekker (pontscho@makacs.poliod.hu)",
""
};
const LIBVO_EXTERN (jpeg)
/* ------------------------------------------------------------------------- */
/* Global Variables */
static int image_width;
static int image_height;
static int image_d_width;
static int image_d_height;
int jpeg_baseline = 1;
int jpeg_progressive_mode = 0;
int jpeg_optimize = 100;
int jpeg_smooth = 0;
int jpeg_quality = 75;
int jpeg_dpi = 72; /** Screen resolution = 72 dpi */
char *jpeg_outdir = NULL;
char *jpeg_subdirs = NULL;
int jpeg_maxfiles = 1000;
static int framenum = 0;
/* ------------------------------------------------------------------------- */
/** \brief Create a directory.
*
* This function creates a directory. If it already exists, it tests if
* it's a directory and not something else, and if it is, it tests whether
* the directory is writable or not.
*
* \param buf Pointer to directory name.
* \param verbose Verbose on success. If verbose is non-zero, it will print
* a message if it was successful in creating the directory.
*
* \return nothing In case anything fails, the player will exit. If it
* returns, everything went well.
*/
static void jpeg_mkdir(const char *buf, int verbose) {
struct stat stat_p;
if ( mkdir(buf, 0755) < 0 ) {
switch (errno) { /* use switch in case other errors need to be caught
and handled in the future */
case EEXIST:
if ( mp_stat(buf, &stat_p ) < 0 ) {
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s: %s\n", info.short_name,
_("This error has occurred"), strerror(errno) );
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s %s\n", info.short_name,
_("Unable to access"), buf);
exit_player_bad(_("Fatal error"));
}
if ( !S_ISDIR(stat_p.st_mode) ) {
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s %s\n", info.short_name,
buf, _("already exists, but is not a directory."));
exit_player_bad(_("Fatal error"));
}
if ( !(stat_p.st_mode & S_IWUSR) ) {
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s - %s\n", info.short_name,
buf, _("Output directory already exists, but is not writable."));
exit_player_bad(_("Fatal error"));
}
mp_msg(MSGT_VO, MSGL_INFO, "%s: %s - %s\n", info.short_name,
buf, _("Output directory already exists and is writable."));
break;
default:
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s: %s\n", info.short_name,
_("This error has occurred"), strerror(errno) );
mp_msg(MSGT_VO, MSGL_ERR, "%s: %s - %s\n", info.short_name,
buf, _("Unable to create output directory."));
exit_player_bad(_("Fatal error"));
} /* end switch */
} else if ( verbose ) {
mp_msg(MSGT_VO, MSGL_INFO, "%s: %s - %s\n", info.short_name,
buf, _("Output directory successfully created."));
} /* end if */
}
/* ------------------------------------------------------------------------- */
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)
{
char buf[BUFLENGTH];
/* Create outdir. */
snprintf(buf, BUFLENGTH, "%s", jpeg_outdir);
jpeg_mkdir(buf, 1); /* This function only returns if creation was
successful. If not, the player will exit. */
image_height = height;
image_width = width;
/* Save for JFIF-Header PAR */
image_d_width = d_width;
image_d_height = d_height;
return 0;
}
/* ------------------------------------------------------------------------- */
static uint32_t jpeg_write(const char * name, uint8_t * buffer)
{
FILE *outfile;
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
JSAMPROW row_pointer[1];
int row_stride;
if ( !buffer ) return 1;
if ( (outfile = fopen(name, "wb") ) == 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) );
exit_player_bad(_("Fatal error"));
}
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, outfile);
cinfo.image_width = image_width;
cinfo.image_height = image_height;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
/* Important: Header info must be set AFTER jpeg_set_defaults() */
cinfo.write_JFIF_header = TRUE;
cinfo.JFIF_major_version = 1;
cinfo.JFIF_minor_version = 2;
cinfo.density_unit = 1; /* 0=unknown, 1=dpi, 2=dpcm */
/* Image DPI is determined by Y_density, so we leave that at
jpeg_dpi if possible and crunch X_density instead (PAR > 1) */
cinfo.X_density = jpeg_dpi*image_width/image_d_width;
cinfo.Y_density = jpeg_dpi*image_height/image_d_height;
cinfo.write_Adobe_marker = TRUE;
jpeg_set_quality(&cinfo,jpeg_quality, jpeg_baseline);
cinfo.optimize_coding = jpeg_optimize;
cinfo.smoothing_factor = jpeg_smooth;
if ( jpeg_progressive_mode ) {
jpeg_simple_progression(&cinfo);
}
jpeg_start_compress(&cinfo, TRUE);
row_stride = image_width * 3;
while (cinfo.next_scanline < cinfo.image_height) {
row_pointer[0] = &buffer[cinfo.next_scanline * row_stride];
(void)jpeg_write_scanlines(&cinfo, row_pointer,1);
}
jpeg_finish_compress(&cinfo);
fclose(outfile);
jpeg_destroy_compress(&cinfo);
return 0;
}
/* ------------------------------------------------------------------------- */
static int draw_frame(uint8_t *src[])
{
static int framecounter = 0, subdircounter = 0;
char buf[BUFLENGTH];
static char subdirname[BUFLENGTH] = "";
/* Start writing to new subdirectory after a certain amount of frames */
if ( framecounter == jpeg_maxfiles ) {
framecounter = 0;
}
/* If framecounter is zero (or reset to zero), increment subdirectory
* number and create the subdirectory.
* If jpeg_subdirs is not set, do nothing and resort to old behaviour. */
if ( !framecounter && jpeg_subdirs ) {
subdircounter++;
snprintf(subdirname, BUFLENGTH, "%s%08d", jpeg_subdirs, subdircounter);
snprintf(buf, BUFLENGTH, "%s/%s", jpeg_outdir, subdirname);
jpeg_mkdir(buf, 0); /* This function only returns if creation was
successful. If not, the player will exit. */
}
framenum++;
/* snprintf the full pathname of the outputfile */
snprintf(buf, BUFLENGTH, "%s/%s/%08d.jpg", jpeg_outdir, subdirname,
framenum);
framecounter++;
return jpeg_write(buf, src[0]);
}
/* ------------------------------------------------------------------------- */
static void draw_osd(void)
{
}
/* ------------------------------------------------------------------------- */
static void flip_page (void)
{
}
/* ------------------------------------------------------------------------- */
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)
{
if (format == IMGFMT_RGB24) {
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
}
return 0;
}
/* ------------------------------------------------------------------------- */
static void uninit(void)
{
free(jpeg_subdirs);
jpeg_subdirs = NULL;
free(jpeg_outdir);
jpeg_outdir = NULL;
}
/* ------------------------------------------------------------------------- */
static void check_events(void)
{
}
/* ------------------------------------------------------------------------- */
/** \brief Validation function for values [0-100]
*/
static int int_zero_hundred(void *valp)
{
int *val = valp;
return *val >= 0 && *val <= 100;
}
static int preinit(const char *arg)
{
const opt_t subopts[] = {
{"progressive", OPT_ARG_BOOL, &jpeg_progressive_mode, NULL},
{"baseline", OPT_ARG_BOOL, &jpeg_baseline, NULL},
{"optimize", OPT_ARG_INT, &jpeg_optimize,
int_zero_hundred},
{"smooth", OPT_ARG_INT, &jpeg_smooth,
int_zero_hundred},
{"quality", OPT_ARG_INT, &jpeg_quality,
int_zero_hundred},
{"dpi", OPT_ARG_INT, &jpeg_dpi, NULL},
{"outdir", OPT_ARG_MSTRZ, &jpeg_outdir, NULL},
{"subdirs", OPT_ARG_MSTRZ, &jpeg_subdirs, NULL},
{"maxfiles", OPT_ARG_INT, &jpeg_maxfiles, int_pos},
{NULL, 0, NULL, NULL}
};
const char *info_message = NULL;
mp_msg(MSGT_VO, MSGL_V, "%s: %s\n", info.short_name,
"Parsing suboptions.");
jpeg_progressive_mode = 0;
jpeg_baseline = 1;
jpeg_optimize = 100;
jpeg_smooth = 0;
jpeg_quality = 75;
jpeg_maxfiles = 1000;
jpeg_outdir = strdup(".");
jpeg_subdirs = NULL;
if (subopt_parse(arg, subopts) != 0) {
return -1;
}
if (jpeg_progressive_mode) info_message = _("Progressive JPEG enabled.");
else info_message = _("Progressive JPEG disabled.");
mp_msg(MSGT_VO, MSGL_INFO, "%s: %s\n", info.short_name, info_message);
if (jpeg_baseline) info_message = _("Baseline JPEG enabled.");
else info_message = _("Baseline JPEG disabled.");
mp_msg(MSGT_VO, MSGL_INFO, "%s: %s\n", info.short_name, info_message);
mp_msg(MSGT_VO, MSGL_V, "%s: optimize --> %d\n", info.short_name,
jpeg_optimize);
mp_msg(MSGT_VO, MSGL_V, "%s: smooth --> %d\n", info.short_name,
jpeg_smooth);
mp_msg(MSGT_VO, MSGL_V, "%s: quality --> %d\n", info.short_name,
jpeg_quality);
mp_msg(MSGT_VO, MSGL_V, "%s: dpi --> %d\n", info.short_name,
jpeg_dpi);
mp_msg(MSGT_VO, MSGL_V, "%s: outdir --> %s\n", info.short_name,
jpeg_outdir);
if (jpeg_subdirs) {
mp_msg(MSGT_VO, MSGL_V, "%s: subdirs --> %s\n", info.short_name,
jpeg_subdirs);
mp_msg(MSGT_VO, MSGL_V, "%s: maxfiles --> %d\n", info.short_name,
jpeg_maxfiles);
}
mp_msg(MSGT_VO, MSGL_V, "%s: %s\n", info.short_name,
"Suboptions parsed OK.");
return 0;
}
/* ------------------------------------------------------------------------- */
static int control(uint32_t request, void *data)
{
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}
/* ------------------------------------------------------------------------- */
#undef BUFLENGTH
/* ------------------------------------------------------------------------- */
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