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Remove spc plugin

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Replaced by gme plugin. Fixes #467
This commit is contained in:
Tim-Philipp Müller 2018-12-16 23:35:58 +00:00
parent aa72783b95
commit ee7e3f7bc7
8 changed files with 0 additions and 1040 deletions
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18
configure.ac
View file

@ -2113,22 +2113,6 @@ AG_GST_CHECK_FEATURE(SOUNDTOUCH, [soundtouch plug-in], soundtouch, [
fi
])
dnl *** spc ***
translit(dnm, m, l) AM_CONDITIONAL(USE_SPC, true)
AG_GST_CHECK_FEATURE(SPC, [spc decoder], spc, [
AC_CHECK_HEADER(openspc.h, [
AC_CHECK_LIB(openspc, OSPC_Init, [
SPC_LIBS="-lopenspc"
AC_SUBST(SPC_LIBS)
HAVE_SPC=yes
], [
HAVE_SPC=no
])
], [
HAVE_SPC=no
])
])
dnl *** gme ***
translit(dnm, m, l) AM_CONDITIONAL(USE_GME, true)
AG_GST_CHECK_FEATURE(GME, [gme decoder], gme, [
@ -2434,7 +2418,6 @@ AM_CONDITIONAL(USE_SMOOTHSTREAMING, false)
AM_CONDITIONAL(USE_SNDFILE, false)
AM_CONDITIONAL(USE_SOUNDTOUCH, false)
AM_CONDITIONAL(USE_SPANDSP, false)
AM_CONDITIONAL(USE_SPC, false)
AM_CONDITIONAL(USE_SRTP, false)
AM_CONDITIONAL(USE_SRT, false)
AM_CONDITIONAL(USE_GME, false)
@ -2746,7 +2729,6 @@ ext/srt/Makefile
ext/srtp/Makefile
ext/teletextdec/Makefile
ext/gme/Makefile
ext/spc/Makefile
ext/wildmidi/Makefile
ext/vulkan/Makefile
ext/vulkan/xcb/Makefile

8
ext/Makefile.am
View file

@ -322,12 +322,6 @@ else
SPANDSP_DIR =
endif
if USE_SPC
SPC_DIR=spc
else
SPC_DIR=
endif
if USE_SRT
SRT_DIR=srt
else
@ -468,7 +462,6 @@ SUBDIRS=\
$(SOUNDTOUCH_DIR) \
$(SPANDSP_DIR) \
$(GME_DIR) \
$(SPC_DIR) \
$(SRT_DIR) \
$(SRTP_DIR) \
$(TELETEXTDEC_DIR) \
@ -535,7 +528,6 @@ DIST_SUBDIRS = \
sndfile \
soundtouch \
spandsp \
spc \
srt \
srtp \
gme \

1
ext/meson.build
View file

@ -49,7 +49,6 @@ subdir('smoothstreaming')
#subdir('sndfile')
subdir('soundtouch')
subdir('spandsp')
#subdir('spc')
subdir('srt')
subdir('srtp')
#subdir('teletextdec')

10
ext/spc/Makefile.am
View file

@ -1,10 +0,0 @@
plugin_LTLIBRARIES = libgstspc.la
libgstspc_la_SOURCES = gstspc.c tag.c
libgstspc_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(SPC_CFLAGS)
libgstspc_la_LIBADD = $(GST_LIBS) $(SPC_LIBS)
libgstspc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstspc.h tag.h

555
ext/spc/gstspc.c
View file

@ -1,555 +0,0 @@
/* Copyright (C) 2004-2005 Michael Pyne <michael dot pyne at kdemail net>
* Copyright (C) 2004-2006 Chris Lee <clee at kde org>
* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstspc.h"
#include <gst/audio/audio.h>
#include <string.h>
#include <glib/gprintf.h>
#include <glib.h>
static GstStaticPadTemplate sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-spc"));
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_spc_dec_parent_class parent_class
G_DEFINE_TYPE (GstSpcDec, gst_spc_dec, GST_TYPE_ELEMENT);
static GstFlowReturn gst_spc_dec_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
static gboolean gst_spc_dec_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_spc_dec_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_spc_dec_src_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static GstStateChangeReturn gst_spc_dec_change_state (GstElement * element,
GstStateChange transition);
static void spc_play (GstPad * pad);
static void gst_spc_dec_dispose (GObject * object);
static gboolean spc_setup (GstSpcDec * spc);
static gboolean
spc_negotiate (GstSpcDec * spc)
{
GstCaps *caps;
caps = gst_pad_get_pad_template_caps (spc->srcpad);
gst_pad_set_caps (spc->srcpad, caps);
gst_caps_unref (caps);
return TRUE;
}
static void
gst_spc_dec_class_init (GstSpcDecClass * klass)
{
GstElementClass *element_class = (GstElementClass *) klass;
GObjectClass *gobject_class = (GObjectClass *) klass;
gst_element_class_set_static_metadata (element_class, "OpenSPC SPC decoder",
"Codec/Audio/Decoder",
"Uses OpenSPC to emulate an SPC processor",
"Chris Lee <clee@kde.org>, Brian Koropoff <bkoropoff@gmail.com>");
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_spc_dec_change_state);
gobject_class->dispose = gst_spc_dec_dispose;
}
static void
gst_spc_dec_init (GstSpcDec * spc)
{
spc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
/* gst_pad_set_query_function (spc->sinkpad, NULL); */
gst_pad_set_event_function (spc->sinkpad, gst_spc_dec_sink_event);
gst_pad_set_chain_function (spc->sinkpad, gst_spc_dec_chain);
gst_element_add_pad (GST_ELEMENT (spc), spc->sinkpad);
spc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
gst_pad_set_event_function (spc->srcpad, gst_spc_dec_src_event);
gst_pad_set_query_function (spc->srcpad, gst_spc_dec_src_query);
gst_pad_use_fixed_caps (spc->srcpad);
gst_element_add_pad (GST_ELEMENT (spc), spc->srcpad);
spc->buf = NULL;
spc->initialized = FALSE;
spc_tag_clear (&spc->tag_info);
}
static void
gst_spc_dec_dispose (GObject * object)
{
GstSpcDec *spc = GST_SPC_DEC (object);
if (spc->buf) {
gst_buffer_unref (spc->buf);
spc->buf = NULL;
}
spc_tag_free (&spc->tag_info);
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static GstFlowReturn
gst_spc_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstSpcDec *spc = GST_SPC_DEC (parent);
if (spc->buf) {
spc->buf = gst_buffer_append (spc->buf, buffer);
} else {
spc->buf = buffer;
}
return GST_FLOW_OK;
}
static gboolean
gst_spc_dec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstSpcDec *spc = GST_SPC_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 = spc_setup (spc))) {
/* can't start, post an ERROR and push EOS downstream */
GST_ELEMENT_ERROR (spc, STREAM, DEMUX, (NULL),
("can't start playback"));
forward = TRUE;
}
break;
default:
break;
}
if (forward)
result = gst_pad_push_event (spc->srcpad, event);
else
gst_event_unref (event);
return result;
}
static gint64
gst_spc_duration (GstSpcDec * spc)
{
gint64 total_ticks =
spc->tag_info.time_intro +
spc->tag_info.time_loop * spc->tag_info.loop_count +
spc->tag_info.time_end;
if (total_ticks) {
return (gint64) gst_util_uint64_scale (total_ticks, GST_SECOND, 64000);
} else if (spc->tag_info.time_seconds) {
gint64 time = (gint64) spc->tag_info.time_seconds * GST_SECOND;
return time;
} else {
return (gint64) (3 * 60) * GST_SECOND;
}
}
static gint64
gst_spc_fadeout (GstSpcDec * spc)
{
if (spc->tag_info.time_fade) {
return (gint64) gst_util_uint64_scale ((guint64) spc->tag_info.time_fade,
GST_SECOND, 64000);
} else if (spc->tag_info.time_fade_milliseconds) {
return (gint64) (spc->tag_info.time_fade_milliseconds * GST_MSECOND);
} else {
return 10 * GST_SECOND;
}
}
static gboolean
gst_spc_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstSpcDec *spc = GST_SPC_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);
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (spc, "seeking is only supported in TIME format");
break;
}
if (start_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE) {
GST_DEBUG_OBJECT (spc, "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 =
gst_util_uint64_scale (spc->byte_pos, GST_SECOND, 32000 * 2 * 2);
guint64 dest = (guint64) start;
dest = CLAMP (dest, 0, gst_spc_duration (spc) + gst_spc_fadeout (spc));
if (dest == cur)
break;
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
if (flush) {
gst_pad_push_event (spc->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (spc->srcpad);
}
GST_PAD_STREAM_LOCK (spc->srcpad);
if (flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (spc),
gst_message_new_segment_start (GST_OBJECT (spc), format, cur));
}
if (flush) {
gst_pad_push_event (spc->srcpad, gst_event_new_flush_stop (TRUE));
}
if (stop == GST_CLOCK_TIME_NONE)
stop = (guint64) (gst_spc_duration (spc) + gst_spc_fadeout (spc));
gst_segment_init (&seg, GST_FORMAT_TIME);
seg.rate = rate;
seg.start = dest;
seg.stop = stop;
seg.time = dest;
gst_pad_push_event (spc->srcpad, gst_event_new_segment (&seg));
/* spc->byte_pos += OSPC_Run(-1, NULL, (unsigned int) (gst_util_uint64_scale(dest - cur, 32000*2*2, GST_SECOND))); */
spc->seekpoint =
gst_util_uint64_scale (dest, 32000 * 2 * 2, GST_SECOND);
spc->seeking = TRUE;
gst_pad_start_task (spc->srcpad, (GstTaskFunction) spc_play,
spc->srcpad, NULL);
GST_PAD_STREAM_UNLOCK (spc->srcpad);
result = TRUE;
}
break;
}
default:
break;
}
return result;
}
static gboolean
gst_spc_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstSpcDec *spc = GST_SPC_DEC (parent);
gboolean result = TRUE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:
{
GstFormat format;
gst_query_parse_duration (query, &format, NULL);
if (!spc->initialized || format != GST_FORMAT_TIME) {
result = FALSE;
break;
}
gst_query_set_duration (query, GST_FORMAT_TIME,
gst_spc_duration (spc) + gst_spc_fadeout (spc));
break;
}
case GST_QUERY_POSITION:
{
GstFormat format;
gst_query_parse_position (query, &format, NULL);
if (!spc->initialized || format != GST_FORMAT_TIME) {
result = FALSE;
break;
}
gst_query_set_position (query, GST_FORMAT_TIME,
(gint64) gst_util_uint64_scale (spc->byte_pos, GST_SECOND,
32000 * 2 * 2));
break;
}
default:
result = gst_pad_query_default (pad, parent, query);
break;
}
return result;
}
static void
spc_play (GstPad * pad)
{
GstSpcDec *spc = GST_SPC_DEC (gst_pad_get_parent (pad));
GstFlowReturn flow_return;
GstBuffer *out;
gboolean seeking = spc->seeking;
gint64 duration, fade, end, position;
GstMapInfo map;
if (!seeking) {
out = gst_buffer_new_and_alloc (1600 * 4);
GST_BUFFER_TIMESTAMP (out) =
(gint64) gst_util_uint64_scale ((guint64) spc->byte_pos, GST_SECOND,
32000 * 2 * 2);
gst_buffer_map (out, &map, GST_MAP_WRITE);
spc->byte_pos += OSPC_Run (-1, (short *) map.data, 1600 * 4);
gst_buffer_unmap (out, &map);
} else {
if (spc->seekpoint < spc->byte_pos) {
gst_buffer_map (spc->buf, &map, GST_MAP_WRITE);
OSPC_Init (map.data, map.size);
gst_buffer_unmap (spc->buf, &map);
spc->byte_pos = 0;
}
spc->byte_pos += OSPC_Run (-1, NULL, 1600 * 4);
if (spc->byte_pos >= spc->seekpoint) {
spc->seeking = FALSE;
}
out = gst_buffer_new ();
}
duration = gst_spc_duration (spc);
fade = gst_spc_fadeout (spc);
end = duration + fade;
position =
(gint64) gst_util_uint64_scale ((guint64) spc->byte_pos, GST_SECOND,
32000 * 2 * 2);
if (position >= duration) {
gint16 *data;
guint32 size;
unsigned int i;
gint64 num;
gst_buffer_map (out, &map, GST_MAP_WRITE);
data = (gint16 *) map.data;
size = map.size / sizeof (gint16);
num = (fade - (position - duration));
for (i = 0; i < size; i++) {
/* Apply a parabolic volume envelope */
data[i] = (gint16) (data[i] * num / fade * num / fade);
}
}
if ((flow_return = gst_pad_push (spc->srcpad, out)) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (spc, "pausing task, reason %s",
gst_flow_get_name (flow_return));
gst_pad_pause_task (pad);
if (flow_return <= GST_FLOW_EOS || flow_return == GST_FLOW_NOT_LINKED) {
gst_pad_push_event (pad, gst_event_new_eos ());
}
}
if (position >= end) {
gst_pad_pause_task (pad);
gst_pad_push_event (pad, gst_event_new_eos ());
}
gst_object_unref (spc);
return;
}
static gboolean
spc_setup (GstSpcDec * spc)
{
spc_tag_info *info;
GstTagList *taglist;
guint64 total_duration;
GstSegment seg;
GstMapInfo map;
if (!spc->buf || !spc_negotiate (spc)) {
return FALSE;
}
info = &(spc->tag_info);
gst_buffer_map (spc->buf, &map, GST_MAP_READ);
spc_tag_get_info (map.data, map.size, info);
taglist = gst_tag_list_new_empty ();
if (info->title)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE,
info->title, NULL);
if (info->artist)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ARTIST,
info->artist, NULL);
/* Prefer the name of the official soundtrack over the name of the game (since this is
* how track numbers are derived)
*/
if (info->album)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ALBUM,
info->album, NULL);
else if (info->game)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ALBUM, info->game,
NULL);
if (info->year) {
GstDateTime *dt = gst_date_time_new_y (info->year);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME, dt,
NULL);
gst_date_time_unref (dt);
}
if (info->track) {
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_TRACK_NUMBER,
info->track, NULL);
}
if (info->comment)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_COMMENT,
info->comment, NULL);
if (info->disc)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ALBUM_VOLUME_NUMBER, info->disc, NULL);
if (info->publisher)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ORGANIZATION,
info->publisher, NULL);
if (info->dumper)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_CONTACT,
info->dumper, NULL);
if (info->emulator)
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER,
info->emulator == EMU_ZSNES ? "ZSNES" : "Snes9x", NULL);
total_duration = (guint64) (gst_spc_duration (spc) + gst_spc_fadeout (spc));
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_DURATION, total_duration,
GST_TAG_GENRE, "Game", GST_TAG_CODEC, "SPC700", NULL);
gst_pad_push_event (spc->srcpad, gst_event_new_tag (taglist));
/* spc_tag_info_free(&info); */
if (OSPC_Init (map.data, map.size) != 0) {
gst_buffer_unmap (spc->buf, &map);
return FALSE;
}
gst_buffer_unmap (spc->buf, &map);
gst_segment_init (&seg, GST_FORMAT_TIME);
gst_pad_push_event (spc->srcpad, gst_event_new_segment (&seg));
gst_pad_start_task (spc->srcpad, (GstTaskFunction) spc_play, spc->srcpad,
NULL);
/* We can't unreference this buffer because we might need to re-initialize
* the emulator with the original data during a reverse seek
* gst_buffer_unref (spc->buf);
* spc->buf = NULL;
*/
spc->initialized = TRUE;
spc->seeking = FALSE;
spc->seekpoint = 0;
spc->byte_pos = 0;
return spc->initialized;
}
static GstStateChangeReturn
gst_spc_dec_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn result;
GstSpcDec *dec;
dec = GST_SPC_DEC (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
default:
break;
}
result =
GST_ELEMENT_CLASS (gst_spc_dec_parent_class)->change_state (element,
transition);
if (result == GST_STATE_CHANGE_FAILURE)
return result;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (dec->buf) {
gst_buffer_unref (dec->buf);
dec->buf = NULL;
}
break;
default:
break;
}
return result;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "spcdec", GST_RANK_SECONDARY,
GST_TYPE_SPC_DEC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
spcdec,
"OpenSPC Audio Decoder",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

72
ext/spc/gstspc.h
View file

@ -1,72 +0,0 @@
/* Copyright (C) 2004-2005 Michael Pyne <michael dot pyne at kdemail net>
* Copyright (C) 2004-2006 Chris Lee <clee at kde org>
* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
*
* 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.
*/
#ifndef __GST_SPC_DEC_H__
#define __GST_SPC_DEC_H__
#include <gst/gst.h>
#include <openspc.h>
#include "tag.h"
G_BEGIN_DECLS
#define GST_TYPE_SPC_DEC \
(gst_spc_dec_get_type())
#define GST_SPC_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPC_DEC,GstSpcDec))
#define GST_SPC_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SPC_DEC,GstSpcDecClass))
#define GST_IS_SPC_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPC_DEC))
#define GST_IS_SPC_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPC_DEC))
typedef struct _GstSpcDec GstSpcDec;
typedef struct _GstSpcDecClass GstSpcDecClass;
struct _GstSpcDec
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
GstBuffer *buf;
gboolean initialized;
gboolean seeking;
guint32 seekpoint;
spc_tag_info tag_info;
guint32 byte_pos;
};
struct _GstSpcDecClass
{
GstElementClass parent_class;
};
GType gst_spc_dec_get_type(void);
G_END_DECLS
#endif /* __GST_SPC_DEC_H__ */

340
ext/spc/tag.c
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@ -1,340 +0,0 @@
/* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
*
* 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.
*/
#include <tag.h>
#include <string.h>
#include <stdlib.h>
#define EXTENDED_OFFSET 0x10200
#define EXTENDED_MAGIC ((guint32) ('x' << 0 | 'i' << 8 | 'd' << 16 | '6' << 24))
#define TYPE_LENGTH 0x0
#define TYPE_STRING 0x1
#define TYPE_INTEGER 0x4
#define TAG_TITLE 0x01
#define TAG_GAME 0x02
#define TAG_ARTIST 0x03
#define TAG_DUMPER 0x04
#define TAG_DUMP_DATE 0x05
#define TAG_EMULATOR 0x06
#define TAG_COMMENT 0x07
#define TAG_ALBUM 0x10
#define TAG_DISC 0x11
#define TAG_TRACK 0x12
#define TAG_PUBLISHER 0x13
#define TAG_YEAR 0x14
#define TAG_INTRO 0x30
#define TAG_LOOP 0x31
#define TAG_END 0x32
#define TAG_FADE 0x33
#define TAG_MUTED 0x34
#define TAG_COUNT 0x35
#define TAG_AMP 0x36
#define READ_INT8(data, offset) (data[offset])
#define READ_INT16(data, offset) ((data[offset] << 0) + (data[offset+1] << 8))
#define READ_INT24(data, offset) ((data[offset] << 0) + (data[offset+1] << 8) + (data[offset+2] << 16))
#define READ_INT32(data, offset) ((data[offset] << 0) + (data[offset+1] << 8) + (data[offset+2] << 16) + (data[offset+3] << 24))
static inline gboolean
spc_tag_is_extended (guchar * data, guint length)
{
// Extended tags come at the end of the file (at a known offset)
// and start with "xid6"
return (length > EXTENDED_OFFSET + 4
&& READ_INT32 (data, EXTENDED_OFFSET) == EXTENDED_MAGIC);
}
static inline gboolean
spc_tag_is_text_format (guchar * data, guint length)
{
// Because the id666 format is brain dead, there's
// no definite way to decide if it is in text
// format. This function implements a set of
// heuristics to make a best-effort guess.
// If the date field contains separators, it is probably text
if (data[0xA0] == '/' || data[0xA0] == '.')
return TRUE;
// If the first byte of the date field is small (but not 0,
// which could indicate an empty string), it's probably binary
if (data[0x9E] >= 1 && data[0x9E] <= 31)
return FALSE;
// If all previous tests turned up nothing, assume it's text
return TRUE;
}
static inline gboolean
spc_tag_is_present (guchar * data, guint length)
{
return data[0x23] == 26;
}
static inline GDate *
spc_tag_unpack_date (guint32 packed)
{
guint dump_year = packed / 10000;
guint dump_month = (packed % 10000) / 100;
guint dump_day = packed % 100;
if (dump_month == 0)
dump_month = 1;
if (dump_day == 0)
dump_day = 1;
if (dump_year != 0)
return g_date_new_dmy (dump_day, dump_month, dump_year);
else
return NULL;
}
void
spc_tag_clear (spc_tag_info * info)
{
info->title = info->game = info->publisher = info->artist = info->album =
info->comment = info->dumper = NULL;
info->dump_date = NULL;
info->time_seconds = 0;
info->time_fade_milliseconds = 0;
info->time_intro = 0;
info->time_end = 0;
info->time_loop = 0;
info->time_fade = 0;
info->loop_count = 0;
info->muted = 0;
info->disc = 0;
info->amplification = 0;
}
void
spc_tag_get_info (guchar * data, guint length, spc_tag_info * info)
{
spc_tag_clear (info);
if (spc_tag_is_present (data, length)) {
gboolean text_format = spc_tag_is_text_format (data, length);
info->title = g_new0 (gchar, 0x21);
info->game = g_new0 (gchar, 0x21);
info->artist = g_new0 (gchar, 0x21);
info->dumper = g_new0 (gchar, 0x10);
info->comment = g_new0 (gchar, 0x32);
strncpy (info->title, (gchar *) & data[0x2E], 32);
strncpy (info->artist, (gchar *) & data[(text_format ? 0xB1 : 0xB0)], 32);
strncpy (info->game, (gchar *) & data[0x4E], 32);
strncpy (info->dumper, (gchar *) & data[0x6E], 16);
strncpy (info->comment, (gchar *) & data[0x7E], 32);
if (text_format) {
gchar time[4];
gchar fade[6];
guint dump_year, dump_month, dump_day;
strncpy (time, (gchar *) data + 0xA9, 3);
strncpy (fade, (gchar *) data + 0xAC, 5);
time[3] = fade[5] = 0;
info->time_seconds = atoi (time);
info->time_fade_milliseconds = atoi (fade);
dump_year = (guint) atoi ((gchar *) data + 0x9E);
dump_month = (guint) atoi ((gchar *) data + 0x9E + 3);
dump_day = (guint) atoi ((gchar *) data + 0x9E + 3 + 3);
if (dump_month == 0)
dump_month = 1;
if (dump_day == 0)
dump_day = 1;
if (dump_year != 0)
info->dump_date = g_date_new_dmy (dump_day, dump_month, dump_year);
info->muted = READ_INT8 (data, 0xD1);
info->emulator = READ_INT8 (data, 0xD2);
} else {
info->time_seconds = READ_INT24 (data, 0xA9);
info->time_fade_milliseconds = READ_INT32 (data, 0xAC);
info->dump_date = spc_tag_unpack_date (READ_INT32 (data, 0x9E));
info->muted = READ_INT8 (data, 0xD0);
info->emulator = READ_INT8 (data, 0xD1);
}
}
if (spc_tag_is_extended (data, length)) {
guchar *chunk = data + EXTENDED_OFFSET + 8;
guint32 chunk_size = *((guint32 *) (data + EXTENDED_OFFSET + 4));
guchar *subchunk, *subchunk_next;
for (subchunk = chunk; subchunk < chunk + chunk_size;
subchunk = subchunk_next) {
guint8 tag = READ_INT8 (subchunk, 0);
guint8 type = READ_INT8 (subchunk, 1);
guint16 length = READ_INT16 (subchunk, 2);
guchar *value = subchunk + 4;
switch (type) {
case TYPE_LENGTH:
{
switch (tag) {
case TAG_TRACK:
info->track = READ_INT8 (subchunk, 2 + 1);
break;
case TAG_YEAR:
info->year = READ_INT16 (subchunk, 2);
break;
case TAG_COUNT:
info->loop_count = READ_INT8 (subchunk, 2);
break;
case TAG_EMULATOR:
info->emulator = READ_INT8 (subchunk, 2);
break;
case TAG_DISC:
info->disc = READ_INT8 (subchunk, 2);
break;
case TAG_MUTED:
info->muted = READ_INT8 (subchunk, 2);
break;
default:
break;
}
subchunk_next = subchunk + 4;
break;
}
case TYPE_STRING:
{
gchar *dest;
if (length <= 1)
dest = NULL;
else
switch (tag) {
case TAG_TITLE:
dest = info->title = g_renew (gchar, info->title, length);
break;
case TAG_GAME:
dest = info->game = g_renew (gchar, info->game, length);
break;
case TAG_ARTIST:
dest = info->artist = g_renew (gchar, info->artist, length);
break;
case TAG_ALBUM:
dest = info->album = g_renew (gchar, info->album, length);
break;
case TAG_DUMPER:
dest = info->dumper = g_renew (gchar, info->dumper, length);
break;
case TAG_COMMENT:
dest = info->comment = g_renew (gchar, info->comment, length);
break;
case TAG_PUBLISHER:
dest = info->publisher =
g_renew (gchar, info->publisher, length);
break;
default:
dest = NULL;
break;
}
if (dest)
strncpy (dest, (gchar *) value, length);
subchunk_next = value + length;
break;
}
case TYPE_INTEGER:
{
switch (tag) {
case TAG_INTRO:
info->time_intro = READ_INT32 (value, 0);
break;
case TAG_END:
info->time_end = READ_INT32 (value, 0);
break;
case TAG_FADE:
info->time_fade = READ_INT32 (value, 0);
break;
case TAG_LOOP:
info->time_loop = READ_INT32 (value, 0);
break;
case TAG_DUMP_DATE:
info->dump_date = spc_tag_unpack_date (READ_INT32 (value, 0));
break;
case TAG_AMP:
info->amplification = READ_INT32 (value, 0);
break;
default:
break;
}
subchunk_next = value + length;
break;
}
default:
subchunk_next = value + length;
break;
}
}
}
if (info->title && !*info->title) {
g_free (info->title);
info->title = NULL;
}
if (info->game && !*info->game) {
g_free (info->game);
info->game = NULL;
}
if (info->artist && !*info->artist) {
g_free (info->artist);
info->artist = NULL;
}
if (info->album && !*info->album) {
g_free (info->album);
info->album = NULL;
}
if (info->publisher && !*info->publisher) {
g_free (info->publisher);
info->publisher = NULL;
}
if (info->comment && !*info->comment) {
g_free (info->comment);
info->comment = NULL;
}
if (info->dumper && !*info->dumper) {
g_free (info->dumper);
info->dumper = NULL;
}
}
void
spc_tag_free (spc_tag_info * info)
{
g_free (info->title);
g_free (info->game);
g_free (info->artist);
g_free (info->album);
g_free (info->publisher);
g_free (info->comment);
g_free (info->dumper);
if (info->dump_date)
g_date_free (info->dump_date);
}

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ext/spc/tag.h
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/* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
*
* 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.
*/
#include <glib.h>
typedef struct
{
gchar *title, *game, *artist, *album, *publisher;
gchar *dumper, *comment;
enum { EMU_SNES9X = 2, EMU_ZSNES = 1, EMU_UNKNOWN = 0 } emulator;
guint8 track, disc, muted, loop_count;
guint16 year;
guint32 time_seconds, time_fade_milliseconds;
guint32 time_intro, time_loop, time_end, time_fade;
guint32 amplification;
GDate *dump_date;
} spc_tag_info;
void spc_tag_clear(spc_tag_info* info);
void spc_tag_get_info(guchar* data, guint length, spc_tag_info* info);
void spc_tag_free(spc_tag_info* info);