diff options
Diffstat (limited to 'src/decoder/modplug_decoder_plugin.c')
| -rw-r--r-- | src/decoder/modplug_decoder_plugin.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/decoder/modplug_decoder_plugin.c b/src/decoder/modplug_decoder_plugin.c new file mode 100644 index 000000000..037c2fd74 --- /dev/null +++ b/src/decoder/modplug_decoder_plugin.c @@ -0,0 +1,194 @@ +/* + * Copyright (C) 2003-2010 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 "decoder_api.h" + +#include <glib.h> +#include <modplug.h> +#include <assert.h> + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "modplug" + +enum { + MODPLUG_FRAME_SIZE = 4096, + MODPLUG_PREALLOC_BLOCK = 256 * 1024, + MODPLUG_READ_BLOCK = 128 * 1024, + MODPLUG_FILE_LIMIT = 100 * 1024 * 1024, +}; + +static GByteArray *mod_loadfile(struct decoder *decoder, struct input_stream *is) +{ + unsigned char *data; + GByteArray *bdatas; + size_t ret; + + if (is->size == 0) { + g_warning("file is empty"); + return NULL; + } + + if (is->size > MODPLUG_FILE_LIMIT) { + g_warning("file too large"); + return NULL; + } + + //known/unknown size, preallocate array, lets read in chunks + if (is->size > 0) { + bdatas = g_byte_array_sized_new(is->size); + } else { + bdatas = g_byte_array_sized_new(MODPLUG_PREALLOC_BLOCK); + } + + data = g_malloc(MODPLUG_READ_BLOCK); + + while (true) { + ret = decoder_read(decoder, is, data, MODPLUG_READ_BLOCK); + if (ret == 0) { + if (input_stream_eof(is)) + /* end of file */ + break; + + /* I/O error - skip this song */ + g_free(data); + g_byte_array_free(bdatas, true); + return NULL; + } + + if (bdatas->len + ret > MODPLUG_FILE_LIMIT) { + g_warning("stream too large\n"); + g_free(data); + g_byte_array_free(bdatas, TRUE); + return NULL; + } + + g_byte_array_append(bdatas, data, ret); + } + + 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; + int ret; + char audio_buffer[MODPLUG_FRAME_SIZE]; + enum decoder_command cmd = DECODE_COMMAND_NONE; + + bdatas = mod_loadfile(decoder, is); + + if (!bdatas) { + g_warning("could not load 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); + + f = ModPlug_Load(bdatas->data, bdatas->len); + g_byte_array_free(bdatas, TRUE); + if (!f) { + g_warning("could not decode stream\n"); + return; + } + + audio_format_init(&audio_format, 44100, SAMPLE_FORMAT_S16, 2); + assert(audio_format_valid(&audio_format)); + + decoder_initialized(decoder, &audio_format, + is->seekable, ModPlug_GetLength(f) / 1000.0); + + do { + ret = ModPlug_Read(f, audio_buffer, MODPLUG_FRAME_SIZE); + if (ret <= 0) + break; + + cmd = decoder_data(decoder, NULL, + audio_buffer, ret, + 0); + + if (cmd == DECODE_COMMAND_SEEK) { + float where = decoder_seek_where(decoder); + + ModPlug_Seek(f, (int)(where * 1000.0)); + + decoder_command_finished(decoder); + } + + } while (cmd != DECODE_COMMAND_STOP); + + ModPlug_Unload(f); +} + +static struct tag * +modplug_stream_tag(struct input_stream *is) +{ + ModPlugFile *f; + struct tag *ret = NULL; + GByteArray *bdatas; + char *title; + + bdatas = mod_loadfile(NULL, is); + if (!bdatas) + return NULL; + + f = ModPlug_Load(bdatas->data, bdatas->len); + g_byte_array_free(bdatas, TRUE); + if (f == NULL) + return NULL; + + ret = tag_new(); + ret->time = ModPlug_GetLength(f) / 1000; + + title = g_strdup(ModPlug_GetName(f)); + if (title) + tag_add_item(ret, TAG_TITLE, title); + g_free(title); + + ModPlug_Unload(f); + + 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_decoder_plugin = { + .name = "modplug", + .stream_decode = mod_decode, + .stream_tag = modplug_stream_tag, + .suffixes = mod_suffixes, +}; |