This patch implements subsong support for gme. I tried to make the behavior
similar to the container support for sidplay.
Commit is available in my repo:
git://github.com/mcfiredrill/mpd.git
---
src/decoder/gme_decoder_plugin.c | 118 +++++++++++++++++++++++++++++++++++---
1 files changed, 109 insertions(+), 9 deletions(-)
diff --git a/src/decoder/gme_decoder_plugin.c b/src/decoder/gme_decoder_plugin.c
index 4b6827a..25aa1f8 100644
--- a/src/decoder/gme_decoder_plugin.c
+++ b/src/decoder/gme_decoder_plugin.c
@@ -1,13 +1,20 @@
#include "config.h"
#include "../decoder_api.h"
#include "audio_check.h"
-#include <glib.h>
+#include "uri.h"
#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <glib.h>
+#include <string.h>
+
#include <gme/gme.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "gme"
+#define SUBTUNE_PREFIX "tune_"
+
enum {
GME_SAMPLE_RATE = 44100,
GME_CHANNELS = 2,
@@ -15,10 +22,84 @@ enum {
GME_BUFFER_SAMPLES = GME_BUFFER_FRAMES * GME_CHANNELS,
};
+/**
+ * returns the file path stripped of any /tune_xxx.* subtune
+ * suffix
+ */
+static char *
+get_container_name(const char *path_fs)
+{
+ const char *subtune_suffix = uri_get_suffix(path_fs);
+ char *path_container=g_strdup(path_fs);
+ GPatternSpec *path_with_subtune=g_pattern_spec_new(
+ g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix, NULL));
+
+ if(!g_pattern_match(path_with_subtune,
+ strlen(path_container), path_container, NULL)){
+ return path_container;
+ }
+
+ char *ptr=g_strrstr(path_container, "/" SUBTUNE_PREFIX);
+ if(ptr) *ptr='\0';
+
+ 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(const char *path_fs)
+{
+ const char *subtune_suffix = uri_get_suffix(path_fs);
+ GPatternSpec *path_with_subtune=g_pattern_spec_new(
+ g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix,
NULL));
+
+ if(g_pattern_match(path_with_subtune,
+ strlen(path_fs), path_fs, NULL)) {
+ char *sub=g_strrstr(path_fs, "/" SUBTUNE_PREFIX);
+ if(!sub) return 0;
+
+ sub+=strlen("/" SUBTUNE_PREFIX);
+ int song_num=strtol(sub, NULL, 10);
+
+ return song_num-1;
+ } else
+ return 0;
+
+}
+
+static char *
+gme_container_scan(const char *path_fs, const unsigned int tnum)
+{
+ Music_Emu *emu;
+ const char* gme_err;
+ unsigned int num_songs;
+
+ gme_err = gme_open_file(path_fs, &emu, GME_SAMPLE_RATE);
+ if (gme_err != NULL) {
+ g_warning("%s", gme_err);
+ return NULL;
+ }
+
+ num_songs = gme_track_count(emu);
+ /* if it only contains a single tune, don't treat as container */
+ if(num_songs < 2)
+ return NULL;
+
+ const char *subtune_suffix = uri_get_suffix(path_fs);
+ if(tnum <= num_songs){
+ char *subtune = g_strdup_printf(
+ SUBTUNE_PREFIX "%03u.%s", tnum, subtune_suffix);
+ return subtune;
+ } else
+ return NULL;
+}
+
static void
gme_file_decode(struct decoder *decoder, const char *path_fs)
{
- int track = 0; /* index of track to play */
float song_len;
Music_Emu *emu;
gme_info_t *ti;
@@ -26,13 +107,20 @@ gme_file_decode(struct decoder *decoder, const char
*path_fs)
enum decoder_command cmd;
short buf[GME_BUFFER_SAMPLES];
const char* gme_err;
+ char *path_container=get_container_name(path_fs);
+ int song_num;
- gme_err = gme_open_file(path_fs, &emu, GME_SAMPLE_RATE);
+ /*if((song_num=get_song_num(path_fs)) == -1)
+ song_num = 0;*/
+ song_num=get_song_num(path_fs);
+
+ gme_err = gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return;
}
- if((gme_err = gme_track_info(emu, &ti, 0)) != NULL){
+
+ if((gme_err = gme_track_info(emu, &ti, song_num)) != NULL){
g_warning("%s", gme_err);
gme_delete(emu);
return;
@@ -57,7 +145,7 @@ gme_file_decode(struct decoder *decoder, const char *path_fs)
decoder_initialized(decoder, &audio_format, true, song_len);
- if((gme_err = gme_start_track(emu, track)) != NULL)
+ if((gme_err = gme_start_track(emu, song_num)) != NULL)
g_warning("%s", gme_err);
/* play */
@@ -90,13 +178,16 @@ gme_tag_dup(const char *path_fs)
Music_Emu *emu;
gme_info_t *ti;
const char* gme_err;
+ char *path_container=get_container_name(path_fs);
+ int song_num;
+ song_num=get_song_num(path_fs);
- gme_err = gme_open_file(path_fs, &emu, GME_SAMPLE_RATE);
+ gme_err = gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return NULL;
}
- if((gme_err = gme_track_info(emu, &ti, 0)) != NULL){
+ if((gme_err = gme_track_info(emu, &ti, song_num)) != NULL){
g_warning("%s", gme_err);
gme_delete(emu);
return NULL;
@@ -106,8 +197,16 @@ gme_tag_dup(const char *path_fs)
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->song != NULL){
+ if(gme_track_count(emu) > 1){
+ /* start numbering subtunes from 1 */
+ char *tag_title=g_strdup_printf("%s (%d/%d)",
+ ti->song, song_num+1,
gme_track_count(emu));
+ tag_add_item(tag, TAG_TITLE, tag_title);
+ g_free(tag_title);
+ }else
+ tag_add_item(tag, TAG_TITLE, ti->song);
+ }
if(ti->author != NULL)
tag_add_item(tag, TAG_ARTIST, ti->author);
if(ti->game != NULL)
@@ -135,4 +234,5 @@ const struct decoder_plugin gme_decoder_plugin = {
.file_decode = gme_file_decode,
.tag_dup = gme_tag_dup,
.suffixes = gme_suffixes,
+ .container_scan = gme_container_scan,
};
--
1.5.6.5
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