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authorTony Miller <mcfiredrill@gmail.com>2010-04-10 01:05:16 -0700
committerTony Miller <mcfiredrill@gmail.com>2010-04-10 01:05:16 -0700
commit9d55b16998b6336bfdd6ea0ae3ac31f8685521f6 (patch)
treeeeaa9587fbc8727e76d7ced346ee9646ab00af86 /src/decoder
parentc52f469c9cff4ad6aeede40ff3254d695a9ba603 (diff)
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Decoder for game music emulation library.
Supports a number of videogame music formats, more info here: http://www.fly.net/~ant/libs/audio.html I wrote this plugin for the latest svn, get it here: http://code.google.com/p/game-music-emu/source/checkout
Diffstat (limited to 'src/decoder')
-rw-r--r--src/decoder/gme_decoder_plugin.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/src/decoder/gme_decoder_plugin.c b/src/decoder/gme_decoder_plugin.c
new file mode 100644
index 000000000..4ca1b2eaf
--- /dev/null
+++ b/src/decoder/gme_decoder_plugin.c
@@ -0,0 +1,129 @@
+#include "config.h"
+#include "../decoder_api.h"
+#include "audio_check.h"
+#include <glib.h>
+#include <assert.h>
+#include <gme/gme.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "gme"
+
+#define GME_BUF_SIZE 4096
+
+static void
+gme_file_decode(struct decoder *decoder, const char *path_fs)
+{
+ int sample_rate = 44100;
+ int track = 0; /* index of track to play */
+ float song_len;
+ Music_Emu *emu;
+ gme_info_t *ti;
+ struct audio_format audio_format;
+ enum decoder_command cmd;
+ short buf[GME_BUF_SIZE];
+ const char* gme_err;
+
+ if((gme_err = gme_open_file(path_fs, &emu, sample_rate)) != NULL){
+ g_warning("%s", gme_err);
+ return;
+ }
+ if((gme_err = gme_track_info(emu, &ti, 0)) != NULL){
+ g_warning("%s", gme_err);
+ gme_delete(emu);
+ return;
+ }
+
+ if(ti->length > 0)
+ song_len = ti->length / 1000.0;
+ else song_len = -1;
+
+ /* initialize the MPD decoder */
+
+ GError *error = NULL;
+ if(!audio_format_init_checked(&audio_format, sample_rate, SAMPLE_FORMAT_S16,
+ 2, &error)){
+ g_warning("%s", error->message);
+ g_error_free(error);
+ gme_free_info(ti);
+ gme_delete(emu);
+ return;
+ }
+
+ decoder_initialized(decoder, &audio_format, true, song_len);
+
+ if((gme_err = gme_start_track(emu, track)) != NULL)
+ g_warning("%s", gme_err);
+
+ /* play */
+ do {
+ if((gme_err = gme_play(emu, GME_BUF_SIZE>>1, buf)) != NULL){
+ g_warning("%s", gme_err);
+ return;
+ }
+ cmd = decoder_data(decoder, NULL, buf, GME_BUF_SIZE, 0);
+
+ if(cmd == DECODE_COMMAND_SEEK) {
+ float where = decoder_seek_where(decoder);
+ if((gme_err = gme_seek(emu, (int)where*1000)) != NULL)
+ g_warning("%s", gme_err);
+ decoder_command_finished(decoder);
+ }
+
+ if(gme_track_ended(emu))
+ break;
+ } while(cmd != DECODE_COMMAND_STOP);
+
+ gme_free_info(ti);
+ gme_delete(emu);
+}
+
+static struct tag *
+gme_tag_dup(const char *path_fs)
+{
+ struct tag *tag = tag_new();
+ int sample_rate = 44100;
+ Music_Emu *emu;
+ gme_info_t *ti;
+ const char* gme_err;
+
+ if((gme_err = gme_open_file(path_fs, &emu, sample_rate)) != NULL){
+ g_warning("%s", gme_err);
+ return NULL;
+ }
+ if((gme_err = gme_track_info(emu, &ti, 0)) != NULL){
+ g_warning("%s", gme_err);
+ gme_delete(emu);
+ return NULL;
+ }
+
+ if(ti != NULL){
+ if(ti->length > 0)
+ tag->time = ti->length / 1000;
+ if(ti->song != NULL)
+ tag_add_item(tag, TAG_TITLE, ti->song);
+ if(ti->author != NULL)
+ tag_add_item(tag, TAG_ARTIST, ti->author);
+ if(ti->comment != NULL)
+ tag_add_item(tag, TAG_COMMENT, ti->comment);
+ if(ti->copyright != NULL)
+ tag_add_item(tag, TAG_DATE, ti->copyright);
+ }
+
+ gme_free_info(ti);
+ gme_delete(emu);
+ return tag;
+}
+
+static const char *const gme_suffixes[] = {
+ "ay", "gbs", "gym", "hes", "kss", "nsf",
+ "nsfe", "sap", "spc", "vgm", "vgz",
+ NULL
+};
+
+extern const struct decoder_plugin gme_decoder_plugin;
+const struct decoder_plugin gme_decoder_plugin = {
+ .name = "gme",
+ .file_decode = gme_file_decode,
+ .tag_dup = gme_tag_dup,
+ .suffixes = gme_suffixes,
+};