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authorViliam Mateicka <viliam.mateicka@gmail.com>2008-12-28 17:11:18 +0100
committerViliam Mateicka <viliam.mateicka@gmail.com>2008-12-28 17:11:18 +0100
commitd838a1ad24a9eaac44367e34506373b4b71e4ff0 (patch)
tree9f94024a290c0e96f53b3b83095f3303a64abadd /src/decoder
parent4654bb462814f64f79302477c59a85317256addc (diff)
downloadmpd-d838a1ad24a9eaac44367e34506373b4b71e4ff0.tar.gz
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decoder: new plugin using modplug library
Diffstat (limited to 'src/decoder')
-rw-r--r--src/decoder/modplug_plugin.c200
1 files changed, 200 insertions, 0 deletions
diff --git a/src/decoder/modplug_plugin.c b/src/decoder/modplug_plugin.c
new file mode 100644
index 000000000..e02282c04
--- /dev/null
+++ b/src/decoder/modplug_plugin.c
@@ -0,0 +1,200 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2008 Viliam Mateicka <viliam.mateicka@gmail.com>
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "../decoder_api.h"
+#include "../utils.h"
+#include "../log.h"
+
+#include <glib.h>
+#include <modplug.h>
+
+#define MODPLUG_FRAME_SIZE (4096)
+#define MODPLUG_PREALLOC_BLOCK (256*1024)
+#define MODPLUG_READ_BLOCK (128*1024)
+#define MODPLUG_FILE_LIMIT (1024*1024*100)
+
+static GByteArray *mod_loadfile(struct decoder *decoder, struct input_stream *is)
+{
+ unsigned char *data;
+ GByteArray *bdatas;
+ int total_len;
+ int ret;
+
+ //known/unknown size, preallocate array, lets read in chunks
+ if (is->size) {
+ if (is->size > MODPLUG_FILE_LIMIT) {
+ g_warning("file too large\n");
+ return NULL;
+ }
+ bdatas = g_byte_array_sized_new(is->size);
+ } else {
+ bdatas = g_byte_array_sized_new(MODPLUG_PREALLOC_BLOCK);
+ }
+ data = g_malloc(MODPLUG_READ_BLOCK);
+ total_len = 0;
+ do {
+ if (decoder) {
+ ret = decoder_read(decoder, is, data, MODPLUG_READ_BLOCK);
+ } else {
+ ret = input_stream_read(is, data, MODPLUG_READ_BLOCK);
+ }
+ if (ret > 0) {
+ g_byte_array_append(bdatas, data, ret);
+ total_len += ret;
+ } else {
+ //end of file, or read error
+ break;
+ }
+ if (total_len > MODPLUG_FILE_LIMIT) {
+ g_warning("stream too large\n");
+ g_free(data);
+ g_byte_array_free(bdatas, TRUE);
+ return NULL;
+ }
+ } while (input_stream_eof(is));
+ g_free(data);
+
+ return bdatas;
+}
+
+static void
+mod_decode(struct decoder *decoder, struct input_stream *is)
+{
+ ModPlugFile *f;
+ ModPlug_Settings settings;
+ GByteArray *bdatas;
+ struct audio_format audio_format;
+ float total_time = 0.0;
+ int ret, current;
+ char audio_buffer[MODPLUG_FRAME_SIZE];
+ float sec_perbyte;
+ enum decoder_command cmd = DECODE_COMMAND_NONE;
+
+ bdatas = mod_loadfile(decoder, is);
+
+ if (!bdatas) {
+ g_warning("could not load stream\n");
+ return;
+ }
+ f = ModPlug_Load(bdatas->data, bdatas->len);
+ g_byte_array_free(bdatas, TRUE);
+ if (!f) {
+ g_warning("could not decode stream\n");
+ return;
+ }
+ ModPlug_GetSettings(&settings);
+ /* alter setting */
+ settings.mResamplingMode = MODPLUG_RESAMPLE_FIR; /* RESAMP */
+ settings.mChannels = 2;
+ settings.mBits = 16;
+ settings.mFrequency = 44100;
+ /* insert more setting changes here */
+ ModPlug_SetSettings(&settings);
+
+ audio_format.bits = 16;
+ audio_format.sample_rate = 44100;
+ audio_format.channels = 2;
+
+ sec_perbyte =
+ 1.0 / ((audio_format.bits * audio_format.channels / 8.0) *
+ (float)audio_format.sample_rate);
+
+ total_time = ModPlug_GetLength(f) / 1000;
+
+ decoder_initialized(decoder, &audio_format,
+ is->seekable, total_time);
+
+ total_time = 0;
+
+ do {
+ ret = ModPlug_Read(f, audio_buffer, MODPLUG_FRAME_SIZE);
+
+ if (ret == 0) {
+ break;
+ }
+
+ total_time += ret * sec_perbyte;
+ cmd = decoder_data(decoder, NULL,
+ audio_buffer, ret,
+ total_time, 0, NULL);
+
+ if (cmd == DECODE_COMMAND_SEEK) {
+ total_time = decoder_seek_where(decoder);
+ current = total_time * 1000;
+ ModPlug_Seek(f, current);
+ decoder_command_finished(decoder);
+ }
+
+ } while (cmd != DECODE_COMMAND_STOP);
+
+ ModPlug_Unload(f);
+}
+
+static struct tag *mod_tagdup(const char *file)
+{
+ ModPlugFile *f;
+ struct tag *ret = NULL;
+ GByteArray *bdatas;
+ char *title;
+ struct input_stream is;
+
+ if (!input_stream_open(&is, file)) {
+ g_warning("cant open file %s\n", file);
+ return NULL;
+ }
+
+ bdatas = mod_loadfile(NULL, &is);
+ if (!bdatas) {
+ g_warning("cant load file %s\n", file);
+ return NULL;
+ }
+
+ f = ModPlug_Load(bdatas->data, bdatas->len);
+ g_byte_array_free(bdatas, TRUE);
+ if (!f) {
+ g_warning("could not decode file %s\n", file);
+ return NULL;
+ }
+ ret = tag_new();
+ ret->time = 0;
+
+ title = g_strdup(ModPlug_GetName(f));
+ if (title)
+ tag_add_item(ret, TAG_ITEM_TITLE, title);
+ g_free(title);
+
+ ModPlug_Unload(f);
+
+ input_stream_close(&is);
+
+ return ret;
+}
+
+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",
+ NULL
+};
+
+const struct decoder_plugin modplug_plugin = {
+ .name = "modplug",
+ .stream_decode = mod_decode,
+ .tag_dup = mod_tagdup,
+ .suffixes = mod_suffixes,
+};