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Add timitity midi render plugin (#403992)
Original commit message from CVS: Patch by: Wouter Paesen <wouter@blue-gate.be> * configure.ac: * ext/Makefile.am: * ext/timidity/Makefile.am: * ext/timidity/gsttimidity.c: (gst_timidity_base_init), (gst_timidity_class_init), (gst_timidity_init), (gst_timidity_set_song_options), (gst_timidity_src_convert), (gst_timidity_src_query), (gst_timidity_get_upstream_size), (gst_timidity_get_segment), (gst_timidity_get_new_segment_event), (gst_timidity_src_event), (gst_timidity_activate), (gst_timidity_activatepull), (gst_timidity_allocate_buffer), (gst_timidity_clip_buffer), (gst_timidity_fill_buffer), (gst_timidity_get_buffer), (gst_timidity_loop), (gst_timidity_change_state), (gst_timidity_typefind), (plugin_init): * ext/timidity/gsttimidity.h: Add timitity midi render plugin (#403992)
This commit is contained in:
Wouter Paesen
Stefan Kost
parent
1ec203993d
commit
b74d9a063f
6 changed files with 945 additions and 1 deletions
21
ChangeLog
21
ChangeLog
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@ -1,3 +1,24 @@
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2007-02-08 Stefan Kost <ensonic@users.sf.net>
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Patch by: Wouter Paesen <wouter@blue-gate.be>
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* configure.ac:
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* ext/Makefile.am:
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* ext/timidity/Makefile.am:
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* ext/timidity/gsttimidity.c: (gst_timidity_base_init),
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(gst_timidity_class_init), (gst_timidity_init),
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(gst_timidity_set_song_options), (gst_timidity_src_convert),
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(gst_timidity_src_query), (gst_timidity_get_upstream_size),
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(gst_timidity_get_segment), (gst_timidity_get_new_segment_event),
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(gst_timidity_src_event), (gst_timidity_activate),
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(gst_timidity_activatepull), (gst_timidity_allocate_buffer),
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(gst_timidity_clip_buffer), (gst_timidity_fill_buffer),
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(gst_timidity_get_buffer), (gst_timidity_loop),
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(gst_timidity_change_state), (gst_timidity_typefind),
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(plugin_init):
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* ext/timidity/gsttimidity.h:
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Add timitity midi render plugin (#403992)
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2007-02-07 Edward Hervey <edward@fluendo.com>
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2007-02-07 Edward Hervey <edward@fluendo.com>
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* ext/amrwb/gstamrwbparse.c: (gst_amrwbparse_query):
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* ext/amrwb/gstamrwbparse.c: (gst_amrwbparse_query):
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12
configure.ac
12
configure.ac
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@ -745,6 +745,17 @@ GST_CHECK_FEATURE(NEON, [neon http client plugins], neonhttpsrc, [
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AC_SUBST(NEON_LIBS)
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AC_SUBST(NEON_LIBS)
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])
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])
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dnl *** timidity ***
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translit(dnm, m, l) AM_CONDITIONAL(USE_TIMIDITY, true)
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GST_CHECK_FEATURE(TIMIDITY, [timidity midie soft synth plugin], timidity, [
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PKG_CHECK_MODULES(TIMIDITY, libtimidity, HAVE_TIMIDITY="yes", [
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HAVE_TIMIDITY="no"
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AC_MSG_RESULT(no)
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])
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AC_SUBST(TIMIDITY_CFLAGS)
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AC_SUBST(TIMIDITY_LIBS)
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])
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dnl *** SDL ***
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dnl *** SDL ***
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translit(dnm, m, l) AM_CONDITIONAL(USE_SDL, true)
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translit(dnm, m, l) AM_CONDITIONAL(USE_SDL, true)
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GST_CHECK_FEATURE(SDL, [SDL plug-in], sdlvideosink sdlaudiosink, [
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GST_CHECK_FEATURE(SDL, [SDL plug-in], sdlvideosink sdlaudiosink, [
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@ -1021,6 +1032,7 @@ ext/soundtouch/Makefile
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ext/spc/Makefile
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ext/spc/Makefile
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ext/swfdec/Makefile
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ext/swfdec/Makefile
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ext/theora/Makefile
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ext/theora/Makefile
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ext/timidity/Makefile
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ext/wavpack/Makefile
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ext/wavpack/Makefile
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ext/xvid/Makefile
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ext/xvid/Makefile
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po/Makefile.in
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po/Makefile.in
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@ -178,6 +178,12 @@ else
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NEON_DIR=
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NEON_DIR=
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endif
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endif
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if USE_TIMIDITY
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TIMIDITY_DIR=timidity
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else
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TIMIDITY_DIR=
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endif
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# if USE_POLYP
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# if USE_POLYP
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# POLYP_DIR=polyp
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# POLYP_DIR=polyp
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# else
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# else
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@ -232,7 +238,6 @@ else
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THEORA_DIR =
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THEORA_DIR =
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endif
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endif
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# if USE_TARKIN
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# if USE_TARKIN
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# TARKIN_DIR=tarkin
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# TARKIN_DIR=tarkin
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# else
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# else
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@ -291,6 +296,7 @@ SUBDIRS=\
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$(SWFDEC_DIR) \
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$(SWFDEC_DIR) \
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$(TARKIN_DIR) \
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$(TARKIN_DIR) \
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$(THEORA_DIR) \
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$(THEORA_DIR) \
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$(TIMIDITY_DIR)
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$(WAVPACK_DIR) \
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$(WAVPACK_DIR) \
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$(XINE_DIR) \
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$(XINE_DIR) \
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$(XVID_DIR)
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$(XVID_DIR)
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@ -321,5 +327,6 @@ DIST_SUBDIRS= \
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spc \
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spc \
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swfdec \
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swfdec \
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theora \
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theora \
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timidity \
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wavpack \
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wavpack \
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xvid
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xvid
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17
ext/timidity/Makefile.am
Normal file
17
ext/timidity/Makefile.am
Normal file
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@ -0,0 +1,17 @@
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# plugindir is set in configure
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# change libgstplugin.la to something more suitable
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plugin_LTLIBRARIES = libgsttimidity.la
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# for the next set of variables, rename the prefix if you renamed the .la
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# sources used to compile this plug-in
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libgsttimidity_la_SOURCES = gsttimidity.c
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# flags used to compile this plugin
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# add other _CFLAGS and _LIBS as needed
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libgsttimidity_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(TIMIDITY_CFLAGS)
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libgsttimidity_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(TIMIDITY_LIBS)
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libgsttimidity_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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noinst_HEADERS = gsttimidity.h
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805
ext/timidity/gsttimidity.c
Normal file
805
ext/timidity/gsttimidity.c
Normal file
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@ -0,0 +1,805 @@
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/*
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* gsttimdity - timidity plugin for gstreamer
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*
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* Copyright 2007 Wouter Paesen <wouter@blue-gate.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <gst/gst.h>
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#include <string.h>
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#include "gsttimidity.h"
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GST_DEBUG_CATEGORY_STATIC (gst_timidity_debug);
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#define GST_CAT_DEFAULT gst_timidity_debug
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static const GstElementDetails gst_timidity_details =
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GST_ELEMENT_DETAILS ("Timidity",
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"Codec/Decoder/Audio",
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"Midi Synthesizer Element",
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"Wouter Paesen <wouter@blue-gate.be>");
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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/* FILL ME */
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};
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static void gst_timidity_base_init (gpointer g_class);
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static void gst_timidity_class_init (GstTimidityClass * klass);
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static gboolean gst_timidity_src_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_timidity_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_timidity_activate (GstPad * pad);
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static gboolean gst_timidity_activatepull (GstPad * pad, gboolean active);
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static void gst_timidity_loop (GstPad * sinkpad);
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static gboolean gst_timidity_src_query (GstPad * pad, GstQuery * query);
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static gboolean gst_timidity_set_song_options (GstTimidity * timidity,
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MidSongOptions * options);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/midi")
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);
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-int, "
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"rate = (int) 44100, "
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"channels = (int) 2, "
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"endianness = (int) LITTLE_ENDIAN, "
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"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true"));
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GST_BOILERPLATE (GstTimidity, gst_timidity, GstElement, GST_TYPE_ELEMENT);
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static void
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gst_timidity_base_init (gpointer gclass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_set_details (element_class, &gst_timidity_details);
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}
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/* initialize the plugin's class */
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static void
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gst_timidity_class_init (GstTimidityClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstelement_class->change_state = gst_timidity_change_state;
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}
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/* initialize the new element
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* instantiate pads and add them to element
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* set functions
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* initialize structure
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*/
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static void
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gst_timidity_init (GstTimidity * filter, GstTimidityClass * g_class)
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{
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (filter);
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filter->sinkpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
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"sink"), "sink");
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gst_pad_set_activatepull_function (filter->sinkpad,
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gst_timidity_activatepull);
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gst_pad_set_activate_function (filter->sinkpad, gst_timidity_activate);
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gst_pad_set_setcaps_function (filter->sinkpad, gst_pad_set_caps);
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gst_pad_use_fixed_caps (filter->sinkpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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filter->srcpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
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"src"), "src");
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|
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gst_pad_set_query_function (filter->srcpad, gst_timidity_src_query);
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gst_pad_set_event_function (filter->srcpad, gst_timidity_src_event);
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gst_pad_use_fixed_caps (filter->srcpad);
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gst_pad_set_setcaps_function (filter->srcpad, gst_pad_set_caps);
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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|
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filter->song_options->buffer_size = 2048;
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filter->song_options->rate = 44100;
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filter->song_options->format = MID_AUDIO_S16LSB;
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filter->song_options->channels = 2;
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|
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gst_timidity_set_song_options (filter, filter->song_options);
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|
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gst_segment_init (filter->o_segment, GST_FORMAT_DEFAULT);
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}
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|
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static gboolean
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gst_timidity_set_song_options (GstTimidity * timidity, MidSongOptions * options)
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{
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gint64 bps;
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|
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|
switch (options->format) {
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|
case MID_AUDIO_U8:
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|
case MID_AUDIO_S8:
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|
bps = 1;
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|
break;
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|
case MID_AUDIO_U16LSB:
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|
case MID_AUDIO_S16LSB:
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|
case MID_AUDIO_U16MSB:
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|
case MID_AUDIO_S16MSB:
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|
bps = 2;
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|
break;
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|
default:
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|
return FALSE;
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|
}
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|
|
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|
bps *= options->channels;
|
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|
|
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|
if (options != timidity->song_options)
|
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|
memcpy (timidity->song_options, options, sizeof (MidSongOptions));
|
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|
|
||||||
|
timidity->bytes_per_frame = bps;
|
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|
timidity->time_per_frame = GST_SECOND / (GstClockTime) options->rate;
|
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|
|
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|
return TRUE;
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|
}
|
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|
|
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|
static gboolean
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|
gst_timidity_src_convert (GstTimidity * timidity,
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|
GstFormat src_format, gint64 src_value,
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|
GstFormat * dest_format, gint64 * dest_value)
|
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|
{
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|
gboolean res = TRUE;
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|
gint64 frames;
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|
|
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|
if (src_format == *dest_format) {
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|
*dest_value = src_value;
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|
goto done;
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|
}
|
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|
|
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|
switch (src_format) {
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|
case GST_FORMAT_TIME:
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|
frames = src_value / timidity->time_per_frame;
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|
break;
|
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|
case GST_FORMAT_BYTES:
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|
frames = src_value / (timidity->bytes_per_frame);
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|
break;
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|
case GST_FORMAT_DEFAULT:
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|
frames = src_value;
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|
break;
|
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|
default:
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|
res = FALSE;
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|
goto done;
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|
}
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|
|
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|
switch (*dest_format) {
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|
case GST_FORMAT_TIME:
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|
*dest_value = frames * timidity->time_per_frame;
|
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|
break;
|
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|
case GST_FORMAT_BYTES:
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|
*dest_value = frames * timidity->bytes_per_frame;
|
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|
break;
|
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|
case GST_FORMAT_DEFAULT:
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|
*dest_value = frames;
|
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|
break;
|
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|
default:
|
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|
res = FALSE;
|
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|
break;
|
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|
}
|
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|
|
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|
done:
|
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|
return res;
|
||||||
|
}
|
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|
|
||||||
|
static gboolean
|
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|
gst_timidity_src_query (GstPad * pad, GstQuery * query)
|
||||||
|
{
|
||||||
|
gboolean res = TRUE;
|
||||||
|
GstTimidity *timidity = GST_TIMIDITY (gst_pad_get_parent (pad));
|
||||||
|
GstFormat src_format, dst_format;
|
||||||
|
gint64 src_value, dst_value;
|
||||||
|
|
||||||
|
if (!timidity->song) {
|
||||||
|
gst_object_unref (timidity);
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (GST_QUERY_TYPE (query)) {
|
||||||
|
case GST_QUERY_DURATION:
|
||||||
|
gst_query_set_duration (query, GST_FORMAT_TIME,
|
||||||
|
GST_MSECOND * (gint64) mid_song_get_total_time (timidity->song));
|
||||||
|
break;
|
||||||
|
case GST_QUERY_POSITION:
|
||||||
|
gst_query_set_position (query, GST_FORMAT_TIME,
|
||||||
|
timidity->o_segment->last_stop * timidity->time_per_frame);
|
||||||
|
break;
|
||||||
|
case GST_QUERY_CONVERT:
|
||||||
|
gst_query_parse_convert (query, &src_format, &src_value,
|
||||||
|
&dst_format, NULL);
|
||||||
|
|
||||||
|
res =
|
||||||
|
gst_timidity_src_convert (timidity, src_format, src_value,
|
||||||
|
&dst_format, &dst_value);
|
||||||
|
if (res)
|
||||||
|
gst_query_set_convert (query, src_format, src_value, dst_format,
|
||||||
|
dst_value);
|
||||||
|
|
||||||
|
break;
|
||||||
|
case GST_QUERY_FORMATS:
|
||||||
|
gst_query_set_formats (query, 3,
|
||||||
|
GST_FORMAT_TIME, GST_FORMAT_BYTES, GST_FORMAT_DEFAULT);
|
||||||
|
break;
|
||||||
|
case GST_QUERY_SEGMENT:
|
||||||
|
gst_query_set_segment (query, timidity->o_segment->rate,
|
||||||
|
timidity->o_segment->format, timidity->o_segment->start,
|
||||||
|
timidity->o_segment->stop);
|
||||||
|
break;
|
||||||
|
case GST_QUERY_SEEKING:
|
||||||
|
gst_query_set_seeking (query, timidity->o_segment->format,
|
||||||
|
TRUE, 0, timidity->o_len);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
res = FALSE;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_object_unref (timidity);
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
gst_timidity_get_upstream_size (GstTimidity * timidity, gint64 * size)
|
||||||
|
{
|
||||||
|
GstFormat format = GST_FORMAT_BYTES;
|
||||||
|
gboolean res = FALSE;
|
||||||
|
GstPad *peer = gst_pad_get_peer (timidity->sinkpad);
|
||||||
|
|
||||||
|
if (peer != NULL)
|
||||||
|
res = gst_pad_query_duration (peer, &format, size) && *size >= 0;
|
||||||
|
|
||||||
|
gst_object_unref (peer);
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstSegment *
|
||||||
|
gst_timidity_get_segment (GstTimidity * timidity, GstFormat format,
|
||||||
|
gboolean update)
|
||||||
|
{
|
||||||
|
gint64 start, stop, time;
|
||||||
|
|
||||||
|
GstSegment *segment = gst_segment_new ();
|
||||||
|
|
||||||
|
gst_timidity_src_convert (timidity,
|
||||||
|
timidity->o_segment->format, timidity->o_segment->start, &format, &start);
|
||||||
|
|
||||||
|
if (timidity->o_segment->stop == GST_CLOCK_TIME_NONE) {
|
||||||
|
stop = GST_CLOCK_TIME_NONE;
|
||||||
|
} else {
|
||||||
|
gst_timidity_src_convert (timidity,
|
||||||
|
timidity->o_segment->format, timidity->o_segment->stop, &format, &stop);
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_timidity_src_convert (timidity,
|
||||||
|
timidity->o_segment->format, timidity->o_segment->time, &format, &time);
|
||||||
|
|
||||||
|
gst_segment_set_newsegment_full (segment, update,
|
||||||
|
timidity->o_segment->rate, timidity->o_segment->applied_rate,
|
||||||
|
format, start, stop, time);
|
||||||
|
|
||||||
|
segment->last_stop = time;
|
||||||
|
|
||||||
|
return segment;
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstEvent *
|
||||||
|
gst_timidity_get_new_segment_event (GstTimidity * timidity, GstFormat format,
|
||||||
|
gboolean update)
|
||||||
|
{
|
||||||
|
GstSegment *segment;
|
||||||
|
GstEvent *event;
|
||||||
|
|
||||||
|
segment = gst_timidity_get_segment (timidity, format, update);
|
||||||
|
|
||||||
|
event = gst_event_new_new_segment_full (update,
|
||||||
|
segment->rate, segment->applied_rate, segment->format,
|
||||||
|
segment->start, segment->stop, segment->time);
|
||||||
|
|
||||||
|
gst_segment_free (segment);
|
||||||
|
|
||||||
|
return event;
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
gst_timidity_src_event (GstPad * pad, GstEvent * event)
|
||||||
|
{
|
||||||
|
gboolean res = FALSE;
|
||||||
|
GstTimidity *timidity = GST_TIMIDITY (gst_pad_get_parent (pad));
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (pad, "%s event received", GST_EVENT_TYPE_NAME (event));
|
||||||
|
|
||||||
|
switch (GST_EVENT_TYPE (event)) {
|
||||||
|
case GST_EVENT_SEEK:
|
||||||
|
{
|
||||||
|
gdouble rate;
|
||||||
|
GstFormat src_format, dst_format;
|
||||||
|
GstSeekFlags flags;
|
||||||
|
GstSeekType start_type, stop_type;
|
||||||
|
gint64 orig_start, start, stop;
|
||||||
|
gboolean flush, update;
|
||||||
|
|
||||||
|
if (!timidity->song)
|
||||||
|
break;
|
||||||
|
|
||||||
|
gst_event_parse_seek (event, &rate, &src_format, &flags,
|
||||||
|
&start_type, &orig_start, &stop_type, &stop);
|
||||||
|
|
||||||
|
dst_format = GST_FORMAT_DEFAULT;
|
||||||
|
|
||||||
|
gst_timidity_src_convert (timidity, src_format, orig_start,
|
||||||
|
&dst_format, &start);
|
||||||
|
gst_timidity_src_convert (timidity, src_format, stop, &dst_format, &stop);
|
||||||
|
|
||||||
|
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
|
||||||
|
|
||||||
|
if (flush) {
|
||||||
|
GST_DEBUG ("performing flush");
|
||||||
|
gst_pad_push_event (timidity->srcpad, gst_event_new_flush_start ());
|
||||||
|
} else {
|
||||||
|
gst_pad_stop_task (timidity->sinkpad);
|
||||||
|
}
|
||||||
|
|
||||||
|
GST_PAD_STREAM_LOCK (timidity->sinkpad);
|
||||||
|
|
||||||
|
if (flush) {
|
||||||
|
gst_pad_push_event (timidity->srcpad, gst_event_new_flush_stop ());
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_segment_set_seek (timidity->o_segment, rate, dst_format, flags,
|
||||||
|
start_type, start, stop_type, stop, &update);
|
||||||
|
|
||||||
|
if ((flags && GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
|
||||||
|
GST_DEBUG_OBJECT (timidity, "received segment seek %d, %d",
|
||||||
|
(gint) start_type, (gint) stop_type);
|
||||||
|
} else {
|
||||||
|
GST_DEBUG_OBJECT (timidity, "received normal seek %d",
|
||||||
|
(gint) start_type);
|
||||||
|
update = FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_pad_push_event (timidity->srcpad,
|
||||||
|
gst_timidity_get_new_segment_event (timidity, GST_FORMAT_TIME,
|
||||||
|
update));
|
||||||
|
|
||||||
|
timidity->o_seek = TRUE;
|
||||||
|
|
||||||
|
gst_pad_start_task (timidity->sinkpad,
|
||||||
|
(GstTaskFunction) gst_timidity_loop, timidity->sinkpad);
|
||||||
|
|
||||||
|
GST_PAD_STREAM_UNLOCK (timidity->sinkpad);
|
||||||
|
GST_DEBUG ("seek done");
|
||||||
|
}
|
||||||
|
res = TRUE;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
g_object_unref (timidity);
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
gst_timidity_activate (GstPad * sinkpad)
|
||||||
|
{
|
||||||
|
if (gst_pad_check_pull_range (sinkpad))
|
||||||
|
return gst_pad_activate_pull (sinkpad, TRUE);
|
||||||
|
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
gst_timidity_activatepull (GstPad * pad, gboolean active)
|
||||||
|
{
|
||||||
|
if (active) {
|
||||||
|
return gst_pad_start_task (pad, (GstTaskFunction) gst_timidity_loop, pad);
|
||||||
|
} else {
|
||||||
|
return gst_pad_stop_task (pad);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstBuffer *
|
||||||
|
gst_timidity_allocate_buffer (GstTimidity * timidity, gint64 samples)
|
||||||
|
{
|
||||||
|
return gst_buffer_new_and_alloc (samples * timidity->bytes_per_frame);
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstBuffer *
|
||||||
|
gst_timidity_clip_buffer (GstTimidity * timidity, GstBuffer * buffer)
|
||||||
|
{
|
||||||
|
gint64 new_start, new_stop;
|
||||||
|
gint64 offset, length;
|
||||||
|
GstBuffer *out;
|
||||||
|
|
||||||
|
return buffer;
|
||||||
|
|
||||||
|
if (!gst_segment_clip (timidity->o_segment, GST_FORMAT_DEFAULT,
|
||||||
|
GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer),
|
||||||
|
&new_start, &new_stop)) {
|
||||||
|
gst_buffer_unref (buffer);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (GST_BUFFER_OFFSET (buffer) == new_start &&
|
||||||
|
GST_BUFFER_OFFSET_END (buffer) == new_stop)
|
||||||
|
return buffer;
|
||||||
|
|
||||||
|
offset = new_start - GST_BUFFER_OFFSET (buffer);
|
||||||
|
length = new_stop - new_start;
|
||||||
|
|
||||||
|
out = gst_buffer_create_sub (buffer, offset * timidity->bytes_per_frame,
|
||||||
|
length * timidity->bytes_per_frame);
|
||||||
|
|
||||||
|
GST_BUFFER_OFFSET (out) = new_start;
|
||||||
|
GST_BUFFER_OFFSET_END (out) = new_stop;
|
||||||
|
GST_BUFFER_TIMESTAMP (out) = new_start * timidity->time_per_frame;
|
||||||
|
GST_BUFFER_DURATION (out) = (new_stop - new_start) * timidity->time_per_frame;
|
||||||
|
|
||||||
|
gst_buffer_unref (buffer);
|
||||||
|
|
||||||
|
return out;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* generate audio data and advance internal timers */
|
||||||
|
static GstBuffer *
|
||||||
|
gst_timidity_fill_buffer (GstTimidity * timidity, GstBuffer * buffer)
|
||||||
|
{
|
||||||
|
size_t bytes_read;
|
||||||
|
gint64 samples;
|
||||||
|
|
||||||
|
bytes_read = mid_song_read_wave (timidity->song, GST_BUFFER_DATA (buffer),
|
||||||
|
GST_BUFFER_SIZE (buffer));
|
||||||
|
|
||||||
|
if (bytes_read == 0) {
|
||||||
|
gst_buffer_unref (buffer);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
GST_BUFFER_OFFSET (buffer) =
|
||||||
|
timidity->o_segment->last_stop * timidity->bytes_per_frame;
|
||||||
|
GST_BUFFER_TIMESTAMP (buffer) =
|
||||||
|
timidity->o_segment->last_stop * timidity->time_per_frame;
|
||||||
|
|
||||||
|
if (bytes_read < GST_BUFFER_SIZE (buffer)) {
|
||||||
|
GstBuffer *old = buffer;
|
||||||
|
|
||||||
|
buffer = gst_buffer_create_sub (buffer, 0, bytes_read);
|
||||||
|
gst_buffer_unref (old);
|
||||||
|
}
|
||||||
|
|
||||||
|
samples = GST_BUFFER_SIZE (buffer) / timidity->bytes_per_frame;
|
||||||
|
|
||||||
|
timidity->o_segment->last_stop += samples;
|
||||||
|
|
||||||
|
GST_BUFFER_OFFSET_END (buffer) =
|
||||||
|
timidity->o_segment->last_stop * timidity->bytes_per_frame;
|
||||||
|
GST_BUFFER_DURATION (buffer) = samples * timidity->time_per_frame;
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (timidity,
|
||||||
|
"generated buffer %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT
|
||||||
|
" (%d samples)",
|
||||||
|
GST_TIME_ARGS ((guint64) GST_BUFFER_TIMESTAMP (buffer)),
|
||||||
|
GST_TIME_ARGS (((guint64) (GST_BUFFER_TIMESTAMP (buffer) +
|
||||||
|
GST_BUFFER_DURATION (buffer)))), samples);
|
||||||
|
|
||||||
|
return buffer;
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstBuffer *
|
||||||
|
gst_timidity_get_buffer (GstTimidity * timidity)
|
||||||
|
{
|
||||||
|
GstBuffer *out;
|
||||||
|
|
||||||
|
out =
|
||||||
|
gst_timidity_fill_buffer (timidity,
|
||||||
|
gst_timidity_allocate_buffer (timidity, 256));
|
||||||
|
|
||||||
|
if (!out)
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
return gst_timidity_clip_buffer (timidity, out);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gst_timidity_loop (GstPad * sinkpad)
|
||||||
|
{
|
||||||
|
GstTimidity *timidity = GST_TIMIDITY (GST_PAD_PARENT (sinkpad));
|
||||||
|
GstBuffer *out;
|
||||||
|
GstFlowReturn ret;
|
||||||
|
|
||||||
|
if (timidity->mididata_size == 0) {
|
||||||
|
if (!gst_timidity_get_upstream_size (timidity, &timidity->mididata_size)) {
|
||||||
|
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
|
||||||
|
("Unable to get song length"));
|
||||||
|
goto paused;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (timidity->mididata)
|
||||||
|
g_free (timidity->mididata);
|
||||||
|
|
||||||
|
timidity->mididata = g_malloc (timidity->mididata_size);
|
||||||
|
timidity->mididata_offset = 0;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (timidity->mididata_offset < timidity->mididata_size) {
|
||||||
|
GstBuffer *buffer;
|
||||||
|
gint64 size;
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (timidity, "loading song");
|
||||||
|
|
||||||
|
ret =
|
||||||
|
gst_pad_pull_range (timidity->sinkpad, timidity->mididata_offset,
|
||||||
|
-1, &buffer);
|
||||||
|
if (ret != GST_FLOW_OK) {
|
||||||
|
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
|
||||||
|
("Unable to load song"));
|
||||||
|
goto paused;
|
||||||
|
}
|
||||||
|
|
||||||
|
size = timidity->mididata_size - timidity->mididata_offset;
|
||||||
|
if (GST_BUFFER_SIZE (buffer) < size)
|
||||||
|
size = GST_BUFFER_SIZE (buffer);
|
||||||
|
|
||||||
|
memmove (timidity->mididata + timidity->mididata_offset,
|
||||||
|
GST_BUFFER_DATA (buffer), size);
|
||||||
|
gst_buffer_unref (buffer);
|
||||||
|
|
||||||
|
timidity->mididata_offset += size;
|
||||||
|
GST_DEBUG_OBJECT (timidity, "Song loaded");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!timidity->song) {
|
||||||
|
MidIStream *stream;
|
||||||
|
GstTagList *tags = NULL;
|
||||||
|
gchar *text;
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (timidity, "Parsing song");
|
||||||
|
|
||||||
|
stream =
|
||||||
|
mid_istream_open_mem (timidity->mididata, timidity->mididata_size, 0);
|
||||||
|
|
||||||
|
timidity->song = mid_song_load (stream, timidity->song_options);
|
||||||
|
mid_istream_close (stream);
|
||||||
|
|
||||||
|
if (!timidity->song) {
|
||||||
|
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
|
||||||
|
("Unable to parse midi"));
|
||||||
|
goto paused;
|
||||||
|
}
|
||||||
|
|
||||||
|
mid_song_start (timidity->song);
|
||||||
|
timidity->o_len = (GST_MSECOND *
|
||||||
|
(GstClockTime) mid_song_get_total_time (timidity->song)) /
|
||||||
|
timidity->time_per_frame;
|
||||||
|
gst_segment_set_newsegment (timidity->o_segment, FALSE, 1.0,
|
||||||
|
GST_FORMAT_DEFAULT, 0, GST_CLOCK_TIME_NONE, 0);
|
||||||
|
|
||||||
|
|
||||||
|
gst_pad_push_event (timidity->srcpad,
|
||||||
|
gst_timidity_get_new_segment_event (timidity, GST_FORMAT_TIME, FALSE));
|
||||||
|
|
||||||
|
/* extract tags */
|
||||||
|
text = mid_song_get_meta (timidity->song, MID_SONG_TEXT);
|
||||||
|
if (text) {
|
||||||
|
tags = gst_tag_list_new ();
|
||||||
|
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_TITLE, text, NULL);
|
||||||
|
|
||||||
|
//g_free (text);
|
||||||
|
}
|
||||||
|
|
||||||
|
text = mid_song_get_meta (timidity->song, MID_SONG_COPYRIGHT);
|
||||||
|
if (text) {
|
||||||
|
if (tags == NULL)
|
||||||
|
tags = gst_tag_list_new ();
|
||||||
|
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
|
||||||
|
GST_TAG_COPYRIGHT, text, NULL);
|
||||||
|
|
||||||
|
//g_free (text);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (tags) {
|
||||||
|
gst_element_found_tags (GST_ELEMENT (timidity), tags);
|
||||||
|
}
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (timidity, "Parsing song done");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (timidity->o_segment_changed) {
|
||||||
|
GST_DEBUG_OBJECT (timidity, "segment changed");
|
||||||
|
|
||||||
|
GstSegment *segment = gst_timidity_get_segment (timidity, GST_FORMAT_TIME,
|
||||||
|
!timidity->o_new_segment);
|
||||||
|
|
||||||
|
GST_LOG_OBJECT (timidity,
|
||||||
|
"sending newsegment from %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT
|
||||||
|
", pos=%" GST_TIME_FORMAT, GST_TIME_ARGS ((guint64) segment->start),
|
||||||
|
GST_TIME_ARGS ((guint64) segment->stop),
|
||||||
|
GST_TIME_ARGS ((guint64) segment->time));
|
||||||
|
|
||||||
|
if (timidity->o_segment->flags & GST_SEEK_FLAG_SEGMENT) {
|
||||||
|
gst_element_post_message (GST_ELEMENT (timidity),
|
||||||
|
gst_message_new_segment_start (GST_OBJECT (timidity),
|
||||||
|
segment->format, segment->start));
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_segment_free (segment);
|
||||||
|
timidity->o_segment_changed = FALSE;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (timidity->o_seek) {
|
||||||
|
/* perform a seek internally */
|
||||||
|
timidity->o_segment->last_stop = timidity->o_segment->time;
|
||||||
|
mid_song_seek (timidity->song,
|
||||||
|
(timidity->o_segment->last_stop * timidity->time_per_frame) /
|
||||||
|
GST_MSECOND);
|
||||||
|
}
|
||||||
|
|
||||||
|
out = gst_timidity_get_buffer (timidity);
|
||||||
|
if (!out) {
|
||||||
|
GST_LOG_OBJECT (timidity, "Song ended, generating eos");
|
||||||
|
gst_pad_push_event (timidity->srcpad, gst_event_new_eos ());
|
||||||
|
timidity->o_seek = FALSE;
|
||||||
|
goto paused;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (timidity->o_seek) {
|
||||||
|
GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
|
||||||
|
timidity->o_seek = FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_buffer_set_caps (out, timidity->out_caps);
|
||||||
|
ret = gst_pad_push (timidity->srcpad, out);
|
||||||
|
|
||||||
|
if (ret == GST_FLOW_OK)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (GST_FLOW_IS_FATAL (ret)) {
|
||||||
|
GST_ELEMENT_ERROR (timidity, STREAM, FAILED,
|
||||||
|
("Internal data stream error XXX"),
|
||||||
|
("Streaming stopped, reason %s", gst_flow_get_name (ret)));
|
||||||
|
}
|
||||||
|
|
||||||
|
paused:
|
||||||
|
GST_LOG_OBJECT (timidity, "pausing task");
|
||||||
|
gst_pad_pause_task (timidity->sinkpad);
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstStateChangeReturn
|
||||||
|
gst_timidity_change_state (GstElement * element, GstStateChange transition)
|
||||||
|
{
|
||||||
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||||
|
GstTimidity *timidity = GST_TIMIDITY (element);
|
||||||
|
|
||||||
|
switch (transition) {
|
||||||
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||||
|
timidity->out_caps =
|
||||||
|
gst_caps_copy (gst_pad_get_pad_template_caps (timidity->srcpad));
|
||||||
|
timidity->mididata = NULL;
|
||||||
|
break;
|
||||||
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||||
|
timidity->mididata_size = 0;
|
||||||
|
break;
|
||||||
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||||
|
|
||||||
|
switch (transition) {
|
||||||
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
||||||
|
break;
|
||||||
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||||
|
if (timidity->song)
|
||||||
|
mid_song_free (timidity->song);
|
||||||
|
timidity->song = NULL;
|
||||||
|
timidity->mididata_size = 0;
|
||||||
|
if (timidity->mididata) {
|
||||||
|
g_free (timidity->mididata);
|
||||||
|
timidity->mididata = NULL;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||||
|
gst_caps_unref (timidity->out_caps);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* http://jedi.ks.uiuc.edu/~johns/links/music/midifile.html
|
||||||
|
*/
|
||||||
|
static void
|
||||||
|
gst_timidity_typefind (GstTypeFind * tf, gpointer _data)
|
||||||
|
{
|
||||||
|
guint8 *data = gst_type_find_peek (tf, 0, 4);
|
||||||
|
|
||||||
|
if (data && data[0] == 'M' && data[1] == 'T' && data[2] == 'h'
|
||||||
|
&& data[3] == 'd') {
|
||||||
|
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
|
||||||
|
gst_caps_new_simple ("audio/midi", NULL));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
plugin_init (GstPlugin * plugin)
|
||||||
|
{
|
||||||
|
static gchar *exts[] = { "mid", "midi", NULL };
|
||||||
|
/* exchange the strings 'plugin' and 'Template plugin' with your
|
||||||
|
* plugin name and description */
|
||||||
|
GST_DEBUG_CATEGORY_INIT (gst_timidity_debug, "timidity",
|
||||||
|
0, "Timidity plugin");
|
||||||
|
|
||||||
|
/* initialise timidity library, fail loading the plugin if this fails
|
||||||
|
* FIXME: check for config location during configure
|
||||||
|
*/
|
||||||
|
if (mid_init ("/etc/timidity/timidity.cfg") != 0) {
|
||||||
|
GST_WARNING ("can't initialize timidity, is it configured?");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!gst_type_find_register (plugin, "audio/midi", GST_RANK_PRIMARY,
|
||||||
|
gst_timidity_typefind, exts,
|
||||||
|
gst_caps_new_simple ("audio/midi", NULL), NULL, NULL))
|
||||||
|
return FALSE;
|
||||||
|
|
||||||
|
return gst_element_register (plugin, "timidity",
|
||||||
|
GST_RANK_PRIMARY, GST_TYPE_TIMIDITY);
|
||||||
|
}
|
||||||
|
|
||||||
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||||
|
GST_VERSION_MINOR,
|
||||||
|
"timidity",
|
||||||
|
"Timidity Plugin",
|
||||||
|
plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
|
||||||
82
ext/timidity/gsttimidity.h
Normal file
82
ext/timidity/gsttimidity.h
Normal file
|
|
@ -0,0 +1,82 @@
|
||||||
|
/*
|
||||||
|
* gsttimdity - timidity plugin for gstreamer
|
||||||
|
*
|
||||||
|
* Copyright 2007 Wouter Paesen <wouter@blue-gate.be>
|
||||||
|
*
|
||||||
|
* This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Library General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library 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
|
||||||
|
* Library General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Library General Public
|
||||||
|
* License along with this library; if not, write to the
|
||||||
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||||
|
* Boston, MA 02111-1307, USA.
|
||||||
|
*
|
||||||
|
* Wrapper element for libtimidity. This element works in pull
|
||||||
|
* based mode because that's essentially how libtimidity works.
|
||||||
|
* We create a libtimidity stream that operates on the srcpad.
|
||||||
|
* The sinkpad is in pull mode.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __GST_TIMIDITY_H__
|
||||||
|
#define __GST_TIMIDITY_H__
|
||||||
|
|
||||||
|
#include <gst/gst.h>
|
||||||
|
#include <gst/base/gstadapter.h>
|
||||||
|
#include <timidity.h>
|
||||||
|
|
||||||
|
G_BEGIN_DECLS
|
||||||
|
#define GST_TYPE_TIMIDITY \
|
||||||
|
(gst_timidity_get_type())
|
||||||
|
#define GST_TIMIDITY(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIMIDITY,GstTimidity))
|
||||||
|
#define GST_TIMIDITY_CLASS(klass) \
|
||||||
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TIMIDITY,GstTimidityClass))
|
||||||
|
#define GST_IS_TIMIDITY(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIMIDITY))
|
||||||
|
#define GST_IS_TIMIDITY_CLASS(klass) \
|
||||||
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TIMIDITY))
|
||||||
|
typedef struct _GstTimidity GstTimidity;
|
||||||
|
typedef struct _GstTimidityClass GstTimidityClass;
|
||||||
|
|
||||||
|
struct _GstTimidity
|
||||||
|
{
|
||||||
|
GstElement element;
|
||||||
|
|
||||||
|
GstPad *sinkpad, *srcpad;
|
||||||
|
|
||||||
|
/* input stream properties */
|
||||||
|
gint64 mididata_size, mididata_offset;
|
||||||
|
gchar *mididata;
|
||||||
|
gboolean mididata_filled;
|
||||||
|
|
||||||
|
MidSong *song;
|
||||||
|
|
||||||
|
/* output data */
|
||||||
|
gboolean o_new_segment, o_segment_changed, o_seek;
|
||||||
|
GstSegment o_segment[1];
|
||||||
|
gint64 o_len;
|
||||||
|
|
||||||
|
/* format of the stream */
|
||||||
|
MidSongOptions song_options[1];
|
||||||
|
gint64 bytes_per_frame;
|
||||||
|
GstClockTime time_per_frame;
|
||||||
|
|
||||||
|
GstCaps *out_caps;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GstTimidityClass
|
||||||
|
{
|
||||||
|
GstElementClass parent_class;
|
||||||
|
};
|
||||||
|
|
||||||
|
GType gst_timidity_get_type (void);
|
||||||
|
|
||||||
|
G_END_DECLS
|
||||||
|
#endif /* __GST_TIMIDITY_H__ */
|
||||||
Loading…
Reference in a new issue