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-rw-r--r--src/decoder/plugins/GmeDecoderPlugin.cxx298
1 files changed, 298 insertions, 0 deletions
diff --git a/src/decoder/plugins/GmeDecoderPlugin.cxx b/src/decoder/plugins/GmeDecoderPlugin.cxx
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index 000000000..cc6ce5e5d
--- /dev/null
+++ b/src/decoder/plugins/GmeDecoderPlugin.cxx
@@ -0,0 +1,298 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "GmeDecoderPlugin.hxx"
+#include "../DecoderAPI.hxx"
+#include "CheckAudioFormat.hxx"
+#include "tag/TagHandler.hxx"
+#include "fs/Path.hxx"
+#include "util/Alloc.hxx"
+#include "util/FormatString.hxx"
+#include "util/UriUtil.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "Log.hxx"
+
+#include <glib.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <gme/gme.h>
+
+#define SUBTUNE_PREFIX "tune_"
+
+static constexpr Domain gme_domain("gme");
+
+static constexpr unsigned GME_SAMPLE_RATE = 44100;
+static constexpr unsigned GME_CHANNELS = 2;
+static constexpr unsigned GME_BUFFER_FRAMES = 2048;
+static constexpr unsigned GME_BUFFER_SAMPLES =
+ GME_BUFFER_FRAMES * GME_CHANNELS;
+
+/**
+ * returns the file path stripped of any /tune_xxx.* subtune
+ * suffix
+ */
+static char *
+get_container_name(Path path_fs)
+{
+ const char *subtune_suffix = uri_get_suffix(path_fs.c_str());
+ char *path_container = xstrdup(path_fs.c_str());
+
+ char pat[64];
+ snprintf(pat, sizeof(pat), "%s%s",
+ "*/" SUBTUNE_PREFIX "???.",
+ subtune_suffix);
+ GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
+ if (!g_pattern_match(path_with_subtune,
+ strlen(path_container), path_container, nullptr)) {
+ g_pattern_spec_free(path_with_subtune);
+ return path_container;
+ }
+
+ char *ptr = g_strrstr(path_container, "/" SUBTUNE_PREFIX);
+ if (ptr != nullptr)
+ *ptr='\0';
+
+ g_pattern_spec_free(path_with_subtune);
+ return path_container;
+}
+
+/**
+ * returns tune number from file.nsf/tune_xxx.* style path or 0 if no subtune
+ * is appended.
+ */
+static int
+get_song_num(Path path_fs)
+{
+ const char *subtune_suffix = uri_get_suffix(path_fs.c_str());
+
+ char pat[64];
+ snprintf(pat, sizeof(pat), "%s%s",
+ "*/" SUBTUNE_PREFIX "???.",
+ subtune_suffix);
+ GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
+
+ if (g_pattern_match(path_with_subtune,
+ path_fs.length(), path_fs.data(), nullptr)) {
+ char *sub = g_strrstr(path_fs.c_str(), "/" SUBTUNE_PREFIX);
+ g_pattern_spec_free(path_with_subtune);
+ if (!sub)
+ return 0;
+
+ sub += strlen("/" SUBTUNE_PREFIX);
+ int song_num = strtol(sub, nullptr, 10);
+
+ return song_num - 1;
+ } else {
+ g_pattern_spec_free(path_with_subtune);
+ return 0;
+ }
+}
+
+static char *
+gme_container_scan(Path path_fs, const unsigned int tnum)
+{
+ Music_Emu *emu;
+ const char *gme_err = gme_open_file(path_fs.c_str(), &emu,
+ GME_SAMPLE_RATE);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ return nullptr;
+ }
+
+ const unsigned num_songs = gme_track_count(emu);
+ gme_delete(emu);
+ /* if it only contains a single tune, don't treat as container */
+ if (num_songs < 2)
+ return nullptr;
+
+ const char *subtune_suffix = uri_get_suffix(path_fs.c_str());
+ if (tnum <= num_songs){
+ return FormatNew(SUBTUNE_PREFIX "%03u.%s",
+ tnum, subtune_suffix);
+ } else
+ return nullptr;
+}
+
+static void
+gme_file_decode(Decoder &decoder, Path path_fs)
+{
+ char *path_container = get_container_name(path_fs);
+
+ Music_Emu *emu;
+ const char *gme_err =
+ gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
+ free(path_container);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ return;
+ }
+
+ gme_info_t *ti;
+ const int song_num = get_song_num(path_fs);
+ gme_err = gme_track_info(emu, &ti, song_num);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ gme_delete(emu);
+ return;
+ }
+
+ const SignedSongTime song_len = ti->length > 0
+ ? SignedSongTime::FromMS(ti->length)
+ : SignedSongTime::Negative();
+
+ /* initialize the MPD decoder */
+
+ Error error;
+ AudioFormat audio_format;
+ if (!audio_format_init_checked(audio_format, GME_SAMPLE_RATE,
+ SampleFormat::S16, GME_CHANNELS,
+ error)) {
+ LogError(error);
+ gme_free_info(ti);
+ gme_delete(emu);
+ return;
+ }
+
+ decoder_initialized(decoder, audio_format, true, song_len);
+
+ gme_err = gme_start_track(emu, song_num);
+ if (gme_err != nullptr)
+ LogWarning(gme_domain, gme_err);
+
+ if (ti->length > 0)
+ gme_set_fade(emu, ti->length);
+
+ /* play */
+ DecoderCommand cmd;
+ do {
+ short buf[GME_BUFFER_SAMPLES];
+ gme_err = gme_play(emu, GME_BUFFER_SAMPLES, buf);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ return;
+ }
+
+ cmd = decoder_data(decoder, nullptr, buf, sizeof(buf), 0);
+ if (cmd == DecoderCommand::SEEK) {
+ unsigned where = decoder_seek_time(decoder).ToMS();
+ gme_err = gme_seek(emu, where);
+ if (gme_err != nullptr)
+ LogWarning(gme_domain, gme_err);
+ decoder_command_finished(decoder);
+ }
+
+ if (gme_track_ended(emu))
+ break;
+ } while (cmd != DecoderCommand::STOP);
+
+ gme_free_info(ti);
+ gme_delete(emu);
+}
+
+static bool
+gme_scan_file(Path path_fs,
+ const struct tag_handler *handler, void *handler_ctx)
+{
+ char *path_container = get_container_name(path_fs);
+
+ Music_Emu *emu;
+ const char *gme_err =
+ gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
+ free(path_container);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ return false;
+ }
+
+ const int song_num = get_song_num(path_fs);
+
+ gme_info_t *ti;
+ gme_err = gme_track_info(emu, &ti, song_num);
+ if (gme_err != nullptr) {
+ LogWarning(gme_domain, gme_err);
+ gme_delete(emu);
+ return false;
+ }
+
+ assert(ti != nullptr);
+
+ if (ti->length > 0)
+ tag_handler_invoke_duration(handler, handler_ctx,
+ SongTime::FromMS(ti->length));
+
+ if (ti->song != nullptr) {
+ if (gme_track_count(emu) > 1) {
+ /* start numbering subtunes from 1 */
+ char tag_title[1024];
+ snprintf(tag_title, sizeof(tag_title),
+ "%s (%d/%d)",
+ ti->song, song_num + 1,
+ gme_track_count(emu));
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_TITLE, tag_title);
+ } else
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_TITLE, ti->song);
+ }
+
+ if (ti->author != nullptr)
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_ARTIST, ti->author);
+
+ if (ti->game != nullptr)
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_ALBUM, ti->game);
+
+ if (ti->comment != nullptr)
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_COMMENT, ti->comment);
+
+ if (ti->copyright != nullptr)
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_DATE, ti->copyright);
+
+ gme_free_info(ti);
+ gme_delete(emu);
+
+ return true;
+}
+
+static const char *const gme_suffixes[] = {
+ "ay", "gbs", "gym", "hes", "kss", "nsf",
+ "nsfe", "sap", "spc", "vgm", "vgz",
+ nullptr
+};
+
+extern const struct DecoderPlugin gme_decoder_plugin;
+const struct DecoderPlugin gme_decoder_plugin = {
+ "gme",
+ nullptr,
+ nullptr,
+ nullptr,
+ gme_file_decode,
+ gme_scan_file,
+ nullptr,
+ gme_container_scan,
+ gme_suffixes,
+ nullptr,
+};