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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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544 lines
16 KiB
C
544 lines
16 KiB
C
/* Copyright (C) 2004-2005,2009 Michael Pyne <mpyne at kde org>
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* Copyright (C) 2004-2006 Chris Lee <clee at kde org>
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* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
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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 "gstgme.h"
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#include <string.h>
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#include <glib/gprintf.h>
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#include <glib.h>
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static GstStaticPadTemplate sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-ay; "
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"audio/x-gbs; "
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"audio/x-gym; "
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"audio/x-hes; "
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"audio/x-kss; "
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"audio/x-nsf; " "audio/x-sap; " "audio/x-spc; " "audio/x-vgm"));
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static GstStaticPadTemplate src_factory =
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GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-int, "
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"endianness = (int) BYTE_ORDER, "
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"signed = (boolean) TRUE, "
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"width = (int) 16, "
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"depth = (int) 16, " "rate = (int) 32000, " "channels = (int) 2"));
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#define gst_gme_dec_parent_class parent_class
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G_DEFINE_TYPE (GstGmeDec, gst_gme_dec, GST_TYPE_ELEMENT);
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static GstFlowReturn gst_gme_dec_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static gboolean gst_gme_dec_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_gme_dec_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_gme_dec_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static GstStateChangeReturn gst_gme_dec_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_gme_play (GstPad * pad);
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static void gst_gme_dec_dispose (GObject * object);
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static gboolean gme_setup (GstGmeDec * gme);
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static gboolean
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gme_negotiate (GstGmeDec * gme)
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{
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GstCaps *allowed, *caps;
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GstStructure *structure;
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gint width = 16, depth = 16;
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gboolean sign;
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int rate = 32000;
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int channels = 2;
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allowed = gst_pad_get_allowed_caps (gme->srcpad);
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if (!allowed) {
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GST_DEBUG_OBJECT (gme, "couldn't get allowed caps");
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return FALSE;
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}
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GST_DEBUG_OBJECT (gme, "allowed caps: %" GST_PTR_FORMAT, allowed);
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structure = gst_caps_get_structure (allowed, 0);
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gst_structure_get_int (structure, "width", &width);
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gst_structure_get_int (structure, "depth", &depth);
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if (width && depth && width != depth) {
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GST_DEBUG_OBJECT (gme, "width %d and depth %d are different", width, depth);
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gst_caps_unref (allowed);
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return FALSE;
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}
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gst_structure_get_boolean (structure, "signed", &sign);
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gst_structure_get_int (structure, "rate", &rate);
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gst_structure_get_int (structure, "channels", &channels);
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caps = gst_caps_new_simple ("audio/x-raw-int",
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"signed", G_TYPE_BOOLEAN, TRUE,
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"width", G_TYPE_INT, width,
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"depth", G_TYPE_INT, depth,
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"rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL);
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gst_pad_set_caps (gme->srcpad, caps);
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gst_caps_unref (caps);
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gst_caps_unref (allowed);
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return TRUE;
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}
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static void
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gst_gme_dec_class_init (GstGmeDecClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *element_class = (GstElementClass *) klass;
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gobject_class->dispose = gst_gme_dec_dispose;
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gst_element_class_set_details_simple (element_class,
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"Gaming console music file decoder", "Codec/Audio/Decoder",
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"Uses libgme to emulate a gaming console sound processors",
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"Chris Lee <clee@kde.org>, Brian Koropoff <bkoropoff@gmail.com>, "
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"Michael Pyne <mpyne@kde.org>, Sebastian Dröge <sebastian.droege@collabora.co.uk>");
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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_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_gme_dec_change_state);
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}
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static void
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gst_gme_dec_init (GstGmeDec * gme)
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{
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gme->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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/* gst_pad_set_query_function (gme->sinkpad, NULL); */
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gst_pad_set_event_function (gme->sinkpad, gst_gme_dec_sink_event);
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gst_pad_set_chain_function (gme->sinkpad, gst_gme_dec_chain);
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gst_element_add_pad (GST_ELEMENT (gme), gme->sinkpad);
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gme->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
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gst_pad_set_event_function (gme->srcpad, gst_gme_dec_src_event);
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gst_pad_set_query_function (gme->srcpad, gst_gme_dec_src_query);
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gst_pad_use_fixed_caps (gme->srcpad);
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gst_element_add_pad (GST_ELEMENT (gme), gme->srcpad);
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gme->adapter = gst_adapter_new ();
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gme->player = NULL;
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gme->total_duration = GST_CLOCK_TIME_NONE;
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gme->initialized = FALSE;
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}
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static void
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gst_gme_dec_dispose (GObject * object)
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{
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GstGmeDec *gme = GST_GME_DEC (object);
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if (gme->adapter) {
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g_object_unref (gme->adapter);
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gme->adapter = NULL;
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}
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}
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static GstFlowReturn
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gst_gme_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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GstGmeDec *gme = GST_GME_DEC (parent);
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/* Accumulate GME data until end-of-stream, then commence playback. */
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gst_adapter_push (gme->adapter, buffer);
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return GST_FLOW_OK;
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}
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static gboolean
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gst_gme_dec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstGmeDec *gme = GST_GME_DEC (parent);
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gboolean result = TRUE;
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gboolean forward = FALSE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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/* we get EOS when we loaded the complete file, now try to initialize the
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* decoding */
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if (!(result = gme_setup (gme))) {
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/* can't start, post an ERROR and push EOS downstream */
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GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL),
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("can't start playback"));
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forward = TRUE;
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}
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break;
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default:
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break;
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}
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if (forward)
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result = gst_pad_push_event (gme->srcpad, event);
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else
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gst_event_unref (event);
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return result;
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}
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static gboolean
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gst_gme_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstGmeDec *gme = GST_GME_DEC (parent);
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gboolean result = FALSE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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{
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gdouble rate;
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GstFormat format;
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GstSeekFlags flags;
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GstSeekType start_type, stop_type;
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gint64 start, stop;
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gboolean flush;
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gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
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&stop_type, &stop);
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gst_event_unref (event);
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if (format != GST_FORMAT_TIME) {
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GST_DEBUG_OBJECT (gme, "seeking is only supported in TIME format");
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break;
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}
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if (start_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE) {
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GST_DEBUG_OBJECT (gme, "unsupported seek type");
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break;
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}
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if (stop_type == GST_SEEK_TYPE_NONE)
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stop = GST_CLOCK_TIME_NONE;
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if (start_type == GST_SEEK_TYPE_SET) {
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GstSegment seg;
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guint64 cur = gme_tell (gme->player) * GST_MSECOND;
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guint64 dest = (guint64) start;
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if (gme->total_duration != GST_CLOCK_TIME_NONE)
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dest = CLAMP (dest, 0, gme->total_duration);
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else
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dest = MAX (0, dest);
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if (dest == cur)
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break;
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flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
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if (flush) {
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gst_pad_push_event (gme->srcpad, gst_event_new_flush_start ());
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} else {
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gst_pad_stop_task (gme->srcpad);
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}
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GST_PAD_STREAM_LOCK (gme->srcpad);
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if (flags & GST_SEEK_FLAG_SEGMENT) {
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gst_element_post_message (GST_ELEMENT (gme),
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gst_message_new_segment_start (GST_OBJECT (gme), format, cur));
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}
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if (flush) {
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gst_pad_push_event (gme->srcpad, gst_event_new_flush_stop (TRUE));
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}
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if (stop == GST_CLOCK_TIME_NONE
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&& gme->total_duration != GST_CLOCK_TIME_NONE)
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stop = gme->total_duration;
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gst_segment_init (&seg, GST_FORMAT_TIME);
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seg.rate = rate;
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seg.start = dest;
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seg.stop = stop;
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seg.time = dest;
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gst_pad_push_event (gme->srcpad, gst_event_new_segment (&seg));
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gme->seekpoint = dest / GST_MSECOND; /* nsecs to msecs */
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gme->seeking = TRUE;
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gst_pad_start_task (gme->srcpad, (GstTaskFunction) gst_gme_play,
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gme->srcpad);
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GST_PAD_STREAM_UNLOCK (gme->srcpad);
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result = TRUE;
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}
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break;
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}
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default:
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result = gst_pad_push_event (gme->sinkpad, event);
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break;
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}
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return result;
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}
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static gboolean
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gst_gme_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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GstGmeDec *gme = GST_GME_DEC (parent);
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gboolean result = TRUE;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_DURATION:
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{
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GstFormat format;
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gst_query_parse_duration (query, &format, NULL);
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if (!gme->initialized || format != GST_FORMAT_TIME
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|| gme->total_duration == GST_CLOCK_TIME_NONE) {
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result = FALSE;
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break;
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}
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gst_query_set_duration (query, GST_FORMAT_TIME, gme->total_duration);
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break;
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}
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case GST_QUERY_POSITION:
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{
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GstFormat format;
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gst_query_parse_position (query, &format, NULL);
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if (!gme->initialized || format != GST_FORMAT_TIME) {
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result = FALSE;
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break;
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}
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gst_query_set_position (query, GST_FORMAT_TIME,
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(gint64) gme_tell (gme->player) * GST_MSECOND);
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break;
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}
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default:
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result = gst_pad_query_default (pad, parent, query);
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break;
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}
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return result;
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}
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static void
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gst_gme_play (GstPad * pad)
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{
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GstGmeDec *gme = GST_GME_DEC (gst_pad_get_parent (pad));
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GstFlowReturn flow_return;
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GstBuffer *out;
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gboolean seeking = gme->seeking;
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gme_err_t gme_err = NULL;
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const int NUM_SAMPLES = 1600; /* 4 bytes (stereo 16-bit) per sample */
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if (!seeking) {
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short *data;
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out = gst_buffer_new_and_alloc (NUM_SAMPLES * 4);
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GST_BUFFER_TIMESTAMP (out) = gme_tell (gme->player) * GST_MSECOND;
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data = gst_buffer_map (out, NULL, NULL, GST_MAP_WRITE);
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gme_err = gme_play (gme->player, NUM_SAMPLES * 2, data);
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gst_buffer_unmap (out, data, -1);
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if (gme_err) {
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GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), (gme_err));
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gst_pad_pause_task (pad);
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gst_pad_push_event (pad, gst_event_new_eos ());
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gst_object_unref (gme);
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return;
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}
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} else {
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gme_seek (gme->player, gme->seekpoint);
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gme->seeking = FALSE;
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out = gst_buffer_new ();
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}
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if ((flow_return = gst_pad_push (gme->srcpad, out)) != GST_FLOW_OK) {
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GST_DEBUG_OBJECT (gme, "pausing task, reason %s",
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gst_flow_get_name (flow_return));
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gst_pad_pause_task (pad);
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if (flow_return == GST_FLOW_UNEXPECTED) {
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gst_pad_push_event (pad, gst_event_new_eos ());
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} else if (flow_return < GST_FLOW_UNEXPECTED
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|| flow_return == GST_FLOW_NOT_LINKED) {
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GST_ELEMENT_ERROR (gme, STREAM, FAILED, ("Internal data stream error."),
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("stream stopped, reason %s", gst_flow_get_name (flow_return)));
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gst_pad_push_event (pad, gst_event_new_eos ());
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}
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}
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if (gme_tell (gme->player) * GST_MSECOND > gme->total_duration) {
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gst_pad_pause_task (pad);
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gst_pad_push_event (pad, gst_event_new_eos ());
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}
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gst_object_unref (gme);
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return;
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}
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static gboolean
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gme_setup (GstGmeDec * gme)
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{
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gme_info_t *info;
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gme_err_t gme_err = NULL;
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GstTagList *taglist;
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guint64 total_duration;
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guint64 fade_time;
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GstBuffer *buffer;
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GstSegment seg;
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guint8 *data;
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gsize size;
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if (!gst_adapter_available (gme->adapter) || !gme_negotiate (gme)) {
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return FALSE;
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}
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buffer =
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gst_adapter_take_buffer (gme->adapter,
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gst_adapter_available (gme->adapter));
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data = gst_buffer_map (buffer, &size, NULL, GST_MAP_READ);
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gme_err = gme_open_data (data, size, &gme->player, 32000);
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gst_buffer_unmap (buffer, data, size);
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gst_buffer_unref (buffer);
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if (gme_err || !gme->player) {
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if (gme->player) {
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gme_delete (gme->player);
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gme->player = NULL;
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}
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GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), (gme_err));
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return FALSE;
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}
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gme_err = gme_track_info (gme->player, &info, 0);
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taglist = gst_tag_list_new_empty ();
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if (info->song && *info->song)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE,
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info->song, NULL);
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if (info->author && *info->author)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ARTIST,
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info->author, NULL);
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/* Prefer the name of the official soundtrack over the name of the game (since this is
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* how track numbers are derived)
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*/
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if (info->game && *info->game)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ALBUM, info->game,
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NULL);
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if (info->comment && *info->comment)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_COMMENT,
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info->comment, NULL);
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if (info->dumper && *info->dumper)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_CONTACT,
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info->dumper, NULL);
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if (info->copyright && *info->copyright)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_COPYRIGHT,
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info->copyright, NULL);
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if (info->system && *info->system)
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER,
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info->system, NULL);
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|
|
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);
|
|
|
|
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);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "gmedec", GST_RANK_PRIMARY,
|
|
GST_TYPE_GME_DEC);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"gmedec",
|
|
"GME Audio Decoder",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|