/* Copyright (C) 2004-2005,2009 Michael Pyne * Copyright (C) 2004-2006 Chris Lee * Copyright (C) 2007 Brian Koropoff * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex * with newer GLib versions (>= 2.31.0) */ #define GLIB_DISABLE_DEPRECATION_WARNINGS #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstgme.h" #include #include #include #include static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-ay; " "audio/x-gbs; " "audio/x-gym; " "audio/x-hes; " "audio/x-kss; " "audio/x-nsf; " "audio/x-sap; " "audio/x-spc; " "audio/x-vgm")); static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw, " "format = (string) " GST_AUDIO_NE (S16) ", " "layout = (string) interleaved, " "rate = (int) 32000, " "channels = (int) 2")); #define gst_gme_dec_parent_class parent_class G_DEFINE_TYPE (GstGmeDec, gst_gme_dec, GST_TYPE_ELEMENT); GST_ELEMENT_REGISTER_DEFINE (gmedec, "gmedec", GST_RANK_PRIMARY, GST_TYPE_GME_DEC); static GstFlowReturn gst_gme_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer); static gboolean gst_gme_dec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event); static gboolean gst_gme_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event); static gboolean gst_gme_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query); static GstStateChangeReturn gst_gme_dec_change_state (GstElement * element, GstStateChange transition); static void gst_gme_play (GstPad * pad); static void gst_gme_dec_dispose (GObject * object); static gboolean gme_setup (GstGmeDec * gme); static gboolean gme_negotiate (GstGmeDec * gme) { GstCaps *caps; caps = gst_pad_get_pad_template_caps (gme->srcpad); gst_pad_set_caps (gme->srcpad, caps); gst_caps_unref (caps); return TRUE; } static void gst_gme_dec_class_init (GstGmeDecClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *element_class = (GstElementClass *) klass; gobject_class->dispose = gst_gme_dec_dispose; gst_element_class_set_static_metadata (element_class, "Gaming console music file decoder", "Codec/Audio/Decoder", "Uses libgme to emulate a gaming console sound processors", "Chris Lee , Brian Koropoff , " "Michael Pyne , Sebastian Dröge "); gst_element_class_add_static_pad_template (element_class, &sink_factory); gst_element_class_add_static_pad_template (element_class, &src_factory); element_class->change_state = GST_DEBUG_FUNCPTR (gst_gme_dec_change_state); } static void gst_gme_dec_init (GstGmeDec * gme) { gme->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink"); /* gst_pad_set_query_function (gme->sinkpad, NULL); */ gst_pad_set_event_function (gme->sinkpad, gst_gme_dec_sink_event); gst_pad_set_chain_function (gme->sinkpad, gst_gme_dec_chain); gst_element_add_pad (GST_ELEMENT (gme), gme->sinkpad); gme->srcpad = gst_pad_new_from_static_template (&src_factory, "src"); gst_pad_set_event_function (gme->srcpad, gst_gme_dec_src_event); gst_pad_set_query_function (gme->srcpad, gst_gme_dec_src_query); gst_pad_use_fixed_caps (gme->srcpad); gst_element_add_pad (GST_ELEMENT (gme), gme->srcpad); gme->adapter = gst_adapter_new (); gme->player = NULL; gme->total_duration = GST_CLOCK_TIME_NONE; gme->initialized = FALSE; } static void gst_gme_dec_dispose (GObject * object) { GstGmeDec *gme = GST_GME_DEC (object); if (gme->adapter) { g_object_unref (gme->adapter); gme->adapter = NULL; } GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); } static GstFlowReturn gst_gme_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) { GstGmeDec *gme = GST_GME_DEC (parent); /* Accumulate GME data until end-of-stream, then commence playback. */ gst_adapter_push (gme->adapter, buffer); return GST_FLOW_OK; } static gboolean gst_gme_dec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstGmeDec *gme = GST_GME_DEC (parent); gboolean result = TRUE; gboolean forward = FALSE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_EOS: /* we get EOS when we loaded the complete file, now try to initialize the * decoding */ if (!(result = gme_setup (gme))) { /* can't start, post an ERROR and push EOS downstream */ GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), ("can't start playback")); forward = TRUE; } break; case GST_EVENT_CAPS: case GST_EVENT_SEGMENT: break; default: forward = TRUE; break; } if (forward) result = gst_pad_push_event (gme->srcpad, event); else gst_event_unref (event); return result; } static gboolean gst_gme_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstGmeDec *gme = GST_GME_DEC (parent); gboolean result = FALSE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: { gdouble rate; GstFormat format; GstSeekFlags flags; GstSeekType start_type, stop_type; gint64 start, stop; gboolean flush; gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start, &stop_type, &stop); gst_event_unref (event); if (format != GST_FORMAT_TIME) { GST_DEBUG_OBJECT (gme, "seeking is only supported in TIME format"); break; } if (start_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE) { GST_DEBUG_OBJECT (gme, "unsupported seek type"); break; } if (stop_type == GST_SEEK_TYPE_NONE) stop = GST_CLOCK_TIME_NONE; if (start_type == GST_SEEK_TYPE_SET) { GstSegment seg; guint64 cur = gme_tell (gme->player) * GST_MSECOND; guint64 dest = (guint64) start; if (gme->total_duration != GST_CLOCK_TIME_NONE) dest = MIN (dest, gme->total_duration); if (dest == cur) break; flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH; if (flush) { gst_pad_push_event (gme->srcpad, gst_event_new_flush_start ()); } else { gst_pad_stop_task (gme->srcpad); } GST_PAD_STREAM_LOCK (gme->srcpad); if (flags & GST_SEEK_FLAG_SEGMENT) { gst_element_post_message (GST_ELEMENT (gme), gst_message_new_segment_start (GST_OBJECT (gme), format, cur)); } if (flush) { gst_pad_push_event (gme->srcpad, gst_event_new_flush_stop (TRUE)); } if (stop == GST_CLOCK_TIME_NONE && gme->total_duration != GST_CLOCK_TIME_NONE) stop = gme->total_duration; gst_segment_init (&seg, GST_FORMAT_TIME); seg.rate = rate; seg.start = dest; seg.stop = stop; seg.time = dest; gst_pad_push_event (gme->srcpad, gst_event_new_segment (&seg)); gme->seekpoint = dest / GST_MSECOND; /* nsecs to msecs */ gme->seeking = TRUE; gst_pad_start_task (gme->srcpad, (GstTaskFunction) gst_gme_play, gme->srcpad, NULL); GST_PAD_STREAM_UNLOCK (gme->srcpad); result = TRUE; } break; } default: result = gst_pad_push_event (gme->sinkpad, event); break; } return result; } static gboolean gst_gme_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query) { GstGmeDec *gme = GST_GME_DEC (parent); gboolean result = TRUE; switch (GST_QUERY_TYPE (query)) { case GST_QUERY_DURATION: { GstFormat format; gst_query_parse_duration (query, &format, NULL); if (!gme->initialized || format != GST_FORMAT_TIME || gme->total_duration == GST_CLOCK_TIME_NONE) { result = FALSE; break; } gst_query_set_duration (query, GST_FORMAT_TIME, gme->total_duration); break; } case GST_QUERY_POSITION: { GstFormat format; gst_query_parse_position (query, &format, NULL); if (!gme->initialized || format != GST_FORMAT_TIME) { result = FALSE; break; } gst_query_set_position (query, GST_FORMAT_TIME, (gint64) gme_tell (gme->player) * GST_MSECOND); break; } default: result = gst_pad_query_default (pad, parent, query); break; } return result; } static void gst_gme_play (GstPad * pad) { GstGmeDec *gme = GST_GME_DEC (gst_pad_get_parent (pad)); GstFlowReturn flow_return; GstBuffer *out; gboolean seeking = gme->seeking; gme_err_t gme_err = NULL; const int NUM_SAMPLES = 1600; /* 4 bytes (stereo 16-bit) per sample */ if (!seeking) { GstMapInfo map; out = gst_buffer_new_and_alloc (NUM_SAMPLES * 4); GST_BUFFER_TIMESTAMP (out) = gme_tell (gme->player) * GST_MSECOND; gst_buffer_map (out, &map, GST_MAP_WRITE); gme_err = gme_play (gme->player, NUM_SAMPLES * 2, (short *) map.data); gst_buffer_unmap (out, &map); if (gme_err) { GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), ("%s", gme_err)); gst_pad_pause_task (pad); gst_pad_push_event (pad, gst_event_new_eos ()); gst_object_unref (gme); return; } } else { gme_seek (gme->player, gme->seekpoint); gme->seeking = FALSE; out = gst_buffer_new (); } if ((flow_return = gst_pad_push (gme->srcpad, out)) != GST_FLOW_OK) { GST_DEBUG_OBJECT (gme, "pausing task, reason %s", gst_flow_get_name (flow_return)); gst_pad_pause_task (pad); if (flow_return == GST_FLOW_EOS) { gst_pad_push_event (pad, gst_event_new_eos ()); } else if (flow_return < GST_FLOW_EOS || flow_return == GST_FLOW_NOT_LINKED) { GST_ELEMENT_FLOW_ERROR (gme, flow_return); gst_pad_push_event (pad, gst_event_new_eos ()); } } if (gme_tell (gme->player) * GST_MSECOND > gme->total_duration) { gst_pad_pause_task (pad); gst_pad_push_event (pad, gst_event_new_eos ()); } gst_object_unref (gme); return; } static gboolean gme_setup (GstGmeDec * gme) { gme_info_t *info; gme_err_t gme_err = NULL; GstTagList *taglist; guint64 total_duration; guint64 fade_time; GstBuffer *buffer; GstSegment seg; GstMapInfo map; if (!gst_adapter_available (gme->adapter) || !gme_negotiate (gme)) { return FALSE; } buffer = gst_adapter_take_buffer (gme->adapter, gst_adapter_available (gme->adapter)); gst_buffer_map (buffer, &map, GST_MAP_READ); gme_err = gme_open_data (map.data, map.size, &gme->player, 32000); gst_buffer_unmap (buffer, &map); gst_buffer_unref (buffer); if (gme_err || !gme->player) { if (gme->player) { gme_delete (gme->player); gme->player = NULL; } GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), ("%s", gme_err)); return FALSE; } gme_err = gme_track_info (gme->player, &info, 0); taglist = gst_tag_list_new_empty (); if (info->song && *info->song) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE, info->song, NULL); if (info->author && *info->author) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ARTIST, info->author, NULL); /* Prefer the name of the official soundtrack over the name of the game (since this is * how track numbers are derived) */ if (info->game && *info->game) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ALBUM, info->game, NULL); if (info->comment && *info->comment) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_COMMENT, info->comment, NULL); if (info->dumper && *info->dumper) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_CONTACT, info->dumper, NULL); if (info->copyright && *info->copyright) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_COPYRIGHT, info->copyright, NULL); if (info->system && *info->system) gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER, info->system, NULL); gme->total_duration = total_duration = gst_util_uint64_scale_int (info->play_length + (info->loop_length > 0 ? 8000 : 0), GST_MSECOND, 1); fade_time = info->loop_length > 0 ? info->play_length : 0; gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_DURATION, total_duration, NULL); gst_pad_push_event (gme->srcpad, gst_event_new_tag (taglist)); g_free (info); #ifdef HAVE_LIBGME_ACCURACY /* TODO: Is it worth it to make this optional? */ gme_enable_accuracy (gme->player, 1); #endif gme_start_track (gme->player, 0); if (fade_time) gme_set_fade (gme->player, fade_time); gst_segment_init (&seg, GST_FORMAT_TIME); gst_pad_push_event (gme->srcpad, gst_event_new_segment (&seg)); gst_pad_start_task (gme->srcpad, (GstTaskFunction) gst_gme_play, gme->srcpad, NULL); gme->initialized = TRUE; gme->seeking = FALSE; gme->seekpoint = 0; return gme->initialized; } static GstStateChangeReturn gst_gme_dec_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn result; GstGmeDec *dec; dec = GST_GME_DEC (element); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: dec->total_duration = GST_CLOCK_TIME_NONE; break; default: break; } result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (result == GST_STATE_CHANGE_FAILURE) return result; switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_adapter_clear (dec->adapter); if (dec->player) { gme_delete (dec->player); dec->player = NULL; } break; default: break; } return result; } static gboolean plugin_init (GstPlugin * plugin) { return GST_ELEMENT_REGISTER (gmedec, plugin); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, gme, "GME Audio Decoder", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);