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/*
* import_mplayer.c
*
* Copyright (C) Thomas Oestreich - June 2001
*
* This file is part of transcode, a video stream processing tool
*
* transcode 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, or (at your option)
* any later version.
*
* transcode 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#define MOD_NAME "import_mplayer.so"
#define MOD_VERSION "v0.1.2 (2007-11-01)"
#define MOD_CODEC "(video) rendered by mplayer | (audio) rendered by mplayer"
#include "transcode.h"
static int verbose_flag = TC_QUIET;
static int capability_flag = TC_CAP_YUV|TC_CAP_RGB|TC_CAP_VID|TC_CAP_PCM;
#define MOD_PRE mplayer
#include "import_def.h"
#include <sys/types.h>
#define VIDEOPIPE_TEMPLATE "/tmp/mplayer2transcode-video.XXXXXX"
#define AUDIOPIPE_TEMPLATE "/tmp/mplayer2transcode-audio.XXXXXX"
static char videopipe[40];
static char audiopipe[40];
static FILE *videopipefd = NULL;
static FILE *audiopipefd = NULL;
/* ------------------------------------------------------------
* private helper macros/functions.
* ------------------------------------------------------------*/
#define RETURN_IF_BAD_SRET(SRET, FIFO) do { \
if ((SRET) < 0) { \
unlink((FIFO)); \
return TC_IMPORT_ERROR; \
} \
} while (0)
#define RETURN_IF_OPEN_FAILED(FP, MSG) do { \
if ((FP) == NULL) { \
tc_log_perror(MOD_NAME, (MSG)); \
unlink(videopipe); \
return TC_IMPORT_ERROR; \
} \
} while (0)
static int tc_mplayer_open_video(vob_t *vob, transfer_t *param)
{
char import_cmd_buf[TC_BUF_MAX];
long sret = 0;
tc_snprintf(videopipe, sizeof(videopipe), VIDEOPIPE_TEMPLATE);
if (!mktemp(videopipe)) {
tc_log_perror(MOD_NAME, "mktemp videopipe failed");
return(TC_IMPORT_ERROR);
}
if (mkfifo(videopipe, 00660) == -1) {
tc_log_perror(MOD_NAME, "mkfifo video failed");
return(TC_IMPORT_ERROR);
}
sret = tc_snprintf(import_cmd_buf, TC_BUF_MAX,
"mplayer -slave -benchmark -noframedrop -nosound"
" -vo yuv4mpeg:file=%s %s \"%s\" -osdlevel 0"
" > /dev/null 2>&1",
videopipe,
((vob->im_v_string) ? vob->im_v_string : ""),
vob->video_in_file);
RETURN_IF_BAD_SRET(sret, videopipe);
if (verbose_flag)
tc_log_info(MOD_NAME, "%s", import_cmd_buf);
videopipefd = popen(import_cmd_buf, "w");
RETURN_IF_OPEN_FAILED(videopipefd, "popen videopipe failed");
if (vob->im_v_codec == CODEC_YUV) {
sret = tc_snprintf(import_cmd_buf, TC_BUF_MAX,
"tcextract -i %s -x yuv420p -t yuv4mpeg", videopipe);
RETURN_IF_BAD_SRET(sret, videopipe);
} else {
sret = tc_snprintf(import_cmd_buf, TC_BUF_MAX,
"tcextract -i %s -x yuv420p -t yuv4mpeg |"
" tcdecode -x yuv420p -g %dx%d",
videopipe, vob->im_v_width, vob->im_v_height);
RETURN_IF_BAD_SRET(sret, videopipe);
}
// print out
if (verbose_flag)
tc_log_info(MOD_NAME, "%s", import_cmd_buf);
param->fd = popen(import_cmd_buf, "r");
RETURN_IF_OPEN_FAILED(videopipefd, "popen YUV stream");
return TC_IMPORT_OK;
}
static int tc_mplayer_open_audio(vob_t *vob, transfer_t *param)
{
char import_cmd_buf[TC_BUF_MAX];
long sret = 0;
tc_snprintf(audiopipe, sizeof(audiopipe), AUDIOPIPE_TEMPLATE);
if (!mktemp(audiopipe)) {
tc_log_perror(MOD_NAME, "mktemp audiopipe failed");
return(TC_IMPORT_ERROR);
}
if (mkfifo(audiopipe, 00660) == -1) {
tc_log_perror(MOD_NAME, "mkfifo audio failed");
unlink(audiopipe);
return(TC_IMPORT_ERROR);
}
sret = tc_snprintf(import_cmd_buf, TC_BUF_MAX,
"mplayer -slave -hardframedrop -vo null -ao pcm:nowaveheader"
":file=\"%s\" %s \"%s\" > /dev/null 2>&1",
audiopipe, (vob->im_a_string ? vob->im_a_string : ""),
vob->audio_in_file);
RETURN_IF_BAD_SRET(sret, audiopipe);
if (verbose_flag)
tc_log_info(MOD_NAME, "%s", import_cmd_buf);
audiopipefd = popen(import_cmd_buf, "w");
RETURN_IF_OPEN_FAILED(audiopipefd, "popen audiopipe failed");
/*
* XXX
* ok, this is really an ugly *temporary* hack that make things work.
* I'm not proud nor satisfied of this, but there isn't much that
* better this moment.
*/
sret = tc_snprintf(import_cmd_buf, TC_BUF_MAX,
"tcextract -i %s -x pcm -t raw", audiopipe);
RETURN_IF_BAD_SRET(sret, audiopipe);
// print out
if (verbose_flag)
tc_log_info(MOD_NAME, "%s", import_cmd_buf);
param->fd = popen(import_cmd_buf, "r");
RETURN_IF_OPEN_FAILED(audiopipefd, "popen PCM stream");
return TC_IMPORT_OK;
}
/*
* OK, there is a nasty deadlocks when dealing with (audio) pipe
* hidden and buried in this module internals.
* short history:
* - mplayer keeps writing data on the FIFO but
* - transcode stops reading from FIFO, so
* - FIFO buffer eventually become full and
* - mplayer blocks, so cannot terminate, but
* - transcode waits for mplayer termination:
* - DEADLOCK!
*
* possible workaround:
* static void tc_mplayer_send_quit(FILE *fd)
* {
* fprintf(fd, "quit\n");
* fflush(fd);
* }
*
* and invoke it in close* functions
*/
static int tc_mplayer_close_video(transfer_t *param)
{
if (param->fd != NULL) {
pclose(param->fd);
}
if (videopipefd != NULL) {
pclose(videopipefd);
videopipefd = NULL;
}
unlink(videopipe);
return TC_IMPORT_OK;
}
static int tc_mplayer_close_audio(transfer_t *param)
{
if (param->fd != NULL)
pclose(param->fd);
if (audiopipefd != NULL) {
pclose(audiopipefd);
audiopipefd = NULL;
}
unlink(audiopipe);
return TC_IMPORT_OK;
}
/* ------------------------------------------------------------
* main external API.
* ------------------------------------------------------------*/
MOD_open
{
/* check for mplayer */
if (tc_test_program("mplayer") != 0) {
return TC_IMPORT_ERROR;
}
if (param->flag == TC_VIDEO) {
return tc_mplayer_open_video(vob, param);
}
if (param->flag == TC_AUDIO) {
return tc_mplayer_open_audio(vob, param);
}
return TC_IMPORT_ERROR;
}
MOD_decode
{
return TC_IMPORT_OK;
}
MOD_close
{
if (param->flag == TC_VIDEO) {
return tc_mplayer_close_video(param);
}
if (param->flag == TC_AUDIO) {
return tc_mplayer_close_audio(param);
}
return TC_IMPORT_ERROR;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/
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