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#include "config.h"
#include "../decoder_api.h"
#include "audio_check.h"
#include "uri.h"
#include "tag_handler.h"
#include <glib.h>
#include <assert.h>
#include <errno.h>
#include <stdlib.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,
GME_BUFFER_FRAMES = 2048,
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);
char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix, NULL);
GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
g_free(pat);
if (!g_pattern_match(path_with_subtune,
strlen(path_container), path_container, NULL)) {
g_pattern_spec_free(path_with_subtune);
return path_container;
}
char *ptr = g_strrstr(path_container, "/" SUBTUNE_PREFIX);
if (ptr != NULL)
*ptr='\0';
g_pattern_spec_free(path_with_subtune);
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);
char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.", subtune_suffix, NULL);
GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
g_free(pat);
if (g_pattern_match(path_with_subtune,
strlen(path_fs), path_fs, NULL)) {
char *sub = g_strrstr(path_fs, "/" SUBTUNE_PREFIX);
g_pattern_spec_free(path_with_subtune);
if(!sub)
return 0;
sub += strlen("/" SUBTUNE_PREFIX);
int song_num = strtol(sub, NULL, 10);
return song_num - 1;
} else {
g_pattern_spec_free(path_with_subtune);
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)
{
float song_len;
Music_Emu *emu;
gme_info_t *ti;
struct audio_format audio_format;
enum decoder_command cmd;
short buf[GME_BUFFER_SAMPLES];
const char* gme_err;
char *path_container = get_container_name(path_fs);
int song_num = get_song_num(path_fs);
gme_err = gme_open_file(path_container, &emu, GME_SAMPLE_RATE);
g_free(path_container);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return;
}
if((gme_err = gme_track_info(emu, &ti, song_num)) != 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, GME_SAMPLE_RATE,
SAMPLE_FORMAT_S16, GME_CHANNELS,
&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, song_num)) != NULL)
g_warning("%s", gme_err);
if(ti->length > 0)
gme_set_fade(emu, ti->length);
/* play */
do {
gme_err = gme_play(emu, GME_BUFFER_SAMPLES, buf);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return;
}
cmd = decoder_data(decoder, NULL, buf, sizeof(buf), 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 bool
gme_scan_file(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
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_container, &emu, GME_SAMPLE_RATE);
g_free(path_container);
if (gme_err != NULL) {
g_warning("%s", gme_err);
return false;
}
if((gme_err = gme_track_info(emu, &ti, song_num)) != NULL){
g_warning("%s", gme_err);
gme_delete(emu);
return false;
}
assert(ti != NULL);
if(ti->length > 0)
tag_handler_invoke_duration(handler, handler_ctx,
ti->length / 100);
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_handler_invoke_tag(handler, handler_ctx,
TAG_TITLE, tag_title);
g_free(tag_title);
}else
tag_handler_invoke_tag(handler, handler_ctx,
TAG_TITLE, ti->song);
}
if(ti->author != NULL)
tag_handler_invoke_tag(handler, handler_ctx,
TAG_ARTIST, ti->author);
if(ti->game != NULL)
tag_handler_invoke_tag(handler, handler_ctx,
TAG_ALBUM, ti->game);
if(ti->comment != NULL)
tag_handler_invoke_tag(handler, handler_ctx,
TAG_COMMENT, ti->comment);
if(ti->copyright != NULL)
tag_handler_invoke_tag(handler, handler_ctx,
TAG_DATE, ti->copyright);
gme_free_info(ti);
gme_delete(emu);
return true;
}
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,
.scan_file = gme_scan_file,
.suffixes = gme_suffixes,
.container_scan = gme_container_scan,
};
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