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-rw-r--r--src/decoder/plugins/ModplugDecoderPlugin.cxx215
1 files changed, 215 insertions, 0 deletions
diff --git a/src/decoder/plugins/ModplugDecoderPlugin.cxx b/src/decoder/plugins/ModplugDecoderPlugin.cxx
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index 000000000..336870817
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+++ b/src/decoder/plugins/ModplugDecoderPlugin.cxx
@@ -0,0 +1,215 @@
+/*
+ * 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 "ModplugDecoderPlugin.hxx"
+#include "../DecoderAPI.hxx"
+#include "input/InputStream.hxx"
+#include "tag/TagHandler.hxx"
+#include "system/FatalError.hxx"
+#include "util/WritableBuffer.hxx"
+#include "util/Domain.hxx"
+#include "Log.hxx"
+
+#include <libmodplug/modplug.h>
+
+
+#include <assert.h>
+
+static constexpr Domain modplug_domain("modplug");
+
+static constexpr size_t MODPLUG_FRAME_SIZE = 4096;
+static constexpr size_t MODPLUG_PREALLOC_BLOCK = 256 * 1024;
+static constexpr InputStream::offset_type MODPLUG_FILE_LIMIT = 100 * 1024 * 1024;
+
+static int modplug_loop_count;
+
+static bool
+modplug_decoder_init(const config_param &param)
+{
+ modplug_loop_count = param.GetBlockValue("loop_count", 0);
+ if (modplug_loop_count < -1)
+ FormatFatalError("Invalid loop count in line %d: %i",
+ param.line, modplug_loop_count);
+
+ return true;
+}
+
+static WritableBuffer<uint8_t>
+mod_loadfile(Decoder *decoder, InputStream &is)
+{
+ const InputStream::offset_type size = is.GetSize();
+
+ if (size == 0) {
+ LogWarning(modplug_domain, "file is empty");
+ return { nullptr, 0 };
+ }
+
+ if (size > MODPLUG_FILE_LIMIT) {
+ LogWarning(modplug_domain, "file too large");
+ return { nullptr, 0 };
+ }
+
+ //known/unknown size, preallocate array, lets read in chunks
+
+ const bool is_stream = size < 0;
+
+ WritableBuffer<uint8_t> buffer;
+ buffer.size = is_stream ? MODPLUG_PREALLOC_BLOCK : size;
+ buffer.data = new uint8_t[buffer.size];
+
+ uint8_t *const end = buffer.end();
+ uint8_t *p = buffer.begin();
+
+ while (true) {
+ size_t ret = decoder_read(decoder, is, p, end - p);
+ if (ret == 0) {
+ if (is.LockIsEOF())
+ /* end of file */
+ break;
+
+ /* I/O error - skip this song */
+ delete[] buffer.data;
+ buffer.data = nullptr;
+ return buffer;
+ }
+
+ p += ret;
+ if (p == end) {
+ if (!is_stream)
+ break;
+
+ LogWarning(modplug_domain, "stream too large");
+ delete[] buffer.data;
+ buffer.data = nullptr;
+ return buffer;
+ }
+ }
+
+ buffer.size = p - buffer.data;
+ return buffer;
+}
+
+static ModPlugFile *
+LoadModPlugFile(Decoder *decoder, InputStream &is)
+{
+ const auto buffer = mod_loadfile(decoder, is);
+ if (buffer.IsNull()) {
+ LogWarning(modplug_domain, "could not load stream");
+ return nullptr;
+ }
+
+ ModPlugFile *f = ModPlug_Load(buffer.data, buffer.size);
+ delete[] buffer.data;
+ return f;
+}
+
+static void
+mod_decode(Decoder &decoder, InputStream &is)
+{
+ ModPlug_Settings settings;
+ int ret;
+ char audio_buffer[MODPLUG_FRAME_SIZE];
+
+ ModPlug_GetSettings(&settings);
+ /* alter setting */
+ settings.mResamplingMode = MODPLUG_RESAMPLE_FIR; /* RESAMP */
+ settings.mChannels = 2;
+ settings.mBits = 16;
+ settings.mFrequency = 44100;
+ settings.mLoopCount = modplug_loop_count;
+ /* insert more setting changes here */
+ ModPlug_SetSettings(&settings);
+
+ ModPlugFile *f = LoadModPlugFile(&decoder, is);
+ if (f == nullptr) {
+ LogWarning(modplug_domain, "could not decode stream");
+ return;
+ }
+
+ static constexpr AudioFormat audio_format(44100, SampleFormat::S16, 2);
+ assert(audio_format.IsValid());
+
+ decoder_initialized(decoder, audio_format,
+ is.IsSeekable(),
+ ModPlug_GetLength(f) / 1000.0);
+
+ DecoderCommand cmd;
+ do {
+ ret = ModPlug_Read(f, audio_buffer, MODPLUG_FRAME_SIZE);
+ if (ret <= 0)
+ break;
+
+ cmd = decoder_data(decoder, nullptr,
+ audio_buffer, ret,
+ 0);
+
+ if (cmd == DecoderCommand::SEEK) {
+ float where = decoder_seek_where(decoder);
+
+ ModPlug_Seek(f, (int)(where * 1000.0));
+
+ decoder_command_finished(decoder);
+ }
+
+ } while (cmd != DecoderCommand::STOP);
+
+ ModPlug_Unload(f);
+}
+
+static bool
+modplug_scan_stream(InputStream &is,
+ const struct tag_handler *handler, void *handler_ctx)
+{
+ ModPlugFile *f = LoadModPlugFile(nullptr, is);
+ if (f == nullptr)
+ return false;
+
+ tag_handler_invoke_duration(handler, handler_ctx,
+ ModPlug_GetLength(f) / 1000);
+
+ const char *title = ModPlug_GetName(f);
+ if (title != nullptr)
+ tag_handler_invoke_tag(handler, handler_ctx,
+ TAG_TITLE, title);
+
+ ModPlug_Unload(f);
+
+ return true;
+}
+
+static const char *const mod_suffixes[] = {
+ "669", "amf", "ams", "dbm", "dfm", "dsm", "far", "it",
+ "med", "mdl", "mod", "mtm", "mt2", "okt", "s3m", "stm",
+ "ult", "umx", "xm",
+ nullptr
+};
+
+const struct DecoderPlugin modplug_decoder_plugin = {
+ "modplug",
+ modplug_decoder_init,
+ nullptr,
+ mod_decode,
+ nullptr,
+ nullptr,
+ modplug_scan_stream,
+ nullptr,
+ mod_suffixes,
+ nullptr,
+};