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