diff --git a/ChangeLog b/ChangeLog index 263daa6ef4..5147344691 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,24 @@ +2007-02-08 Stefan Kost + + Patch by: Wouter Paesen + + * 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) + 2007-02-07 Edward Hervey * ext/amrwb/gstamrwbparse.c: (gst_amrwbparse_query): diff --git a/configure.ac b/configure.ac index 8a14f54f0b..ce3091a086 100644 --- a/configure.ac +++ b/configure.ac @@ -745,6 +745,17 @@ GST_CHECK_FEATURE(NEON, [neon http client plugins], neonhttpsrc, [ AC_SUBST(NEON_LIBS) ]) +dnl *** timidity *** +translit(dnm, m, l) AM_CONDITIONAL(USE_TIMIDITY, true) +GST_CHECK_FEATURE(TIMIDITY, [timidity midie soft synth plugin], timidity, [ + PKG_CHECK_MODULES(TIMIDITY, libtimidity, HAVE_TIMIDITY="yes", [ + HAVE_TIMIDITY="no" + AC_MSG_RESULT(no) + ]) + AC_SUBST(TIMIDITY_CFLAGS) + AC_SUBST(TIMIDITY_LIBS) +]) + dnl *** SDL *** translit(dnm, m, l) AM_CONDITIONAL(USE_SDL, true) GST_CHECK_FEATURE(SDL, [SDL plug-in], sdlvideosink sdlaudiosink, [ @@ -1021,6 +1032,7 @@ ext/soundtouch/Makefile ext/spc/Makefile ext/swfdec/Makefile ext/theora/Makefile +ext/timidity/Makefile ext/wavpack/Makefile ext/xvid/Makefile po/Makefile.in diff --git a/ext/Makefile.am b/ext/Makefile.am index 4e960c8e2f..37b5fc1911 100644 --- a/ext/Makefile.am +++ b/ext/Makefile.am @@ -178,6 +178,12 @@ else NEON_DIR= endif +if USE_TIMIDITY +TIMIDITY_DIR=timidity +else +TIMIDITY_DIR= +endif + # if USE_POLYP # POLYP_DIR=polyp # else @@ -232,7 +238,6 @@ else THEORA_DIR = endif - # if USE_TARKIN # TARKIN_DIR=tarkin # else @@ -291,6 +296,7 @@ SUBDIRS=\ $(SWFDEC_DIR) \ $(TARKIN_DIR) \ $(THEORA_DIR) \ + $(TIMIDITY_DIR) $(WAVPACK_DIR) \ $(XINE_DIR) \ $(XVID_DIR) @@ -321,5 +327,6 @@ DIST_SUBDIRS= \ spc \ swfdec \ theora \ + timidity \ wavpack \ xvid diff --git a/ext/timidity/Makefile.am b/ext/timidity/Makefile.am new file mode 100644 index 0000000000..a88aae32e5 --- /dev/null +++ b/ext/timidity/Makefile.am @@ -0,0 +1,17 @@ +# plugindir is set in configure + +# change libgstplugin.la to something more suitable +plugin_LTLIBRARIES = libgsttimidity.la + +# for the next set of variables, rename the prefix if you renamed the .la + +# sources used to compile this plug-in +libgsttimidity_la_SOURCES = gsttimidity.c + +# flags used to compile this plugin +# add other _CFLAGS and _LIBS as needed +libgsttimidity_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(TIMIDITY_CFLAGS) +libgsttimidity_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(TIMIDITY_LIBS) +libgsttimidity_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) + +noinst_HEADERS = gsttimidity.h diff --git a/ext/timidity/gsttimidity.c b/ext/timidity/gsttimidity.c new file mode 100644 index 0000000000..f8cc0af9d1 --- /dev/null +++ b/ext/timidity/gsttimidity.c @@ -0,0 +1,805 @@ +/* + * gsttimdity - timidity plugin for gstreamer + * + * Copyright 2007 Wouter Paesen + * + * 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. + */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include + +#include "gsttimidity.h" + +GST_DEBUG_CATEGORY_STATIC (gst_timidity_debug); +#define GST_CAT_DEFAULT gst_timidity_debug + +static const GstElementDetails gst_timidity_details = +GST_ELEMENT_DETAILS ("Timidity", + "Codec/Decoder/Audio", + "Midi Synthesizer Element", + "Wouter Paesen "); + +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0, + /* FILL ME */ +}; + +static void gst_timidity_base_init (gpointer g_class); +static void gst_timidity_class_init (GstTimidityClass * klass); + +static gboolean gst_timidity_src_event (GstPad * pad, GstEvent * event); +static GstStateChangeReturn gst_timidity_change_state (GstElement * element, + GstStateChange transition); +static gboolean gst_timidity_activate (GstPad * pad); +static gboolean gst_timidity_activatepull (GstPad * pad, gboolean active); +static void gst_timidity_loop (GstPad * sinkpad); +static gboolean gst_timidity_src_query (GstPad * pad, GstQuery * query); +static gboolean gst_timidity_set_song_options (GstTimidity * timidity, + MidSongOptions * options); + +static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/midi") + ); + +static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "rate = (int) 44100, " + "channels = (int) 2, " + "endianness = (int) LITTLE_ENDIAN, " + "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")); + +GST_BOILERPLATE (GstTimidity, gst_timidity, GstElement, GST_TYPE_ELEMENT); + +static void +gst_timidity_base_init (gpointer gclass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&src_factory)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&sink_factory)); + gst_element_class_set_details (element_class, &gst_timidity_details); +} + +/* initialize the plugin's class */ +static void +gst_timidity_class_init (GstTimidityClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + gstelement_class->change_state = gst_timidity_change_state; +} + +/* initialize the new element + * instantiate pads and add them to element + * set functions + * initialize structure + */ +static void +gst_timidity_init (GstTimidity * filter, GstTimidityClass * g_class) +{ + GstElementClass *klass = GST_ELEMENT_GET_CLASS (filter); + + filter->sinkpad = + gst_pad_new_from_template (gst_element_class_get_pad_template (klass, + "sink"), "sink"); + + gst_pad_set_activatepull_function (filter->sinkpad, + gst_timidity_activatepull); + gst_pad_set_activate_function (filter->sinkpad, gst_timidity_activate); + gst_pad_set_setcaps_function (filter->sinkpad, gst_pad_set_caps); + gst_pad_use_fixed_caps (filter->sinkpad); + gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); + + filter->srcpad = + gst_pad_new_from_template (gst_element_class_get_pad_template (klass, + "src"), "src"); + + gst_pad_set_query_function (filter->srcpad, gst_timidity_src_query); + gst_pad_set_event_function (filter->srcpad, gst_timidity_src_event); + gst_pad_use_fixed_caps (filter->srcpad); + gst_pad_set_setcaps_function (filter->srcpad, gst_pad_set_caps); + + gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); + + filter->song_options->buffer_size = 2048; + filter->song_options->rate = 44100; + filter->song_options->format = MID_AUDIO_S16LSB; + filter->song_options->channels = 2; + + gst_timidity_set_song_options (filter, filter->song_options); + + gst_segment_init (filter->o_segment, GST_FORMAT_DEFAULT); +} + +static gboolean +gst_timidity_set_song_options (GstTimidity * timidity, MidSongOptions * options) +{ + gint64 bps; + + switch (options->format) { + case MID_AUDIO_U8: + case MID_AUDIO_S8: + bps = 1; + break; + case MID_AUDIO_U16LSB: + case MID_AUDIO_S16LSB: + case MID_AUDIO_U16MSB: + case MID_AUDIO_S16MSB: + bps = 2; + break; + default: + return FALSE; + } + + bps *= options->channels; + + if (options != timidity->song_options) + memcpy (timidity->song_options, options, sizeof (MidSongOptions)); + + timidity->bytes_per_frame = bps; + timidity->time_per_frame = GST_SECOND / (GstClockTime) options->rate; + + return TRUE; +} + +static gboolean +gst_timidity_src_convert (GstTimidity * timidity, + GstFormat src_format, gint64 src_value, + GstFormat * dest_format, gint64 * dest_value) +{ + gboolean res = TRUE; + gint64 frames; + + if (src_format == *dest_format) { + *dest_value = src_value; + goto done; + } + + switch (src_format) { + case GST_FORMAT_TIME: + frames = src_value / timidity->time_per_frame; + break; + case GST_FORMAT_BYTES: + frames = src_value / (timidity->bytes_per_frame); + break; + case GST_FORMAT_DEFAULT: + frames = src_value; + break; + default: + res = FALSE; + goto done; + } + + switch (*dest_format) { + case GST_FORMAT_TIME: + *dest_value = frames * timidity->time_per_frame; + break; + case GST_FORMAT_BYTES: + *dest_value = frames * timidity->bytes_per_frame; + break; + case GST_FORMAT_DEFAULT: + *dest_value = frames; + break; + default: + res = FALSE; + break; + } + +done: + return res; +} + +static gboolean +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/") diff --git a/ext/timidity/gsttimidity.h b/ext/timidity/gsttimidity.h new file mode 100644 index 0000000000..0e58b3b60d --- /dev/null +++ b/ext/timidity/gsttimidity.h @@ -0,0 +1,82 @@ +/* + * gsttimdity - timidity plugin for gstreamer + * + * Copyright 2007 Wouter Paesen + * + * 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 +#include +#include + +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__ */