movie: load case-insensitive filename

include/xsystem4.h

@@ -67,6 +67,7 @@ void log_message(const char *log, const char *fmt, ...);
 
 char *unix_path(const char *path);
 char *gamedir_path(const char *path);
+char *gamedir_path_icase(const char *path);
 char *savedir_path(const char *path);
 
 void get_date(int *year, int *month, int *mday, int *wday);

src/movie_ffmpeg.c

@@ -168,6 +168,7 @@ static int audio_callback(sts_mixer_sample_t *sample, void *data)
 	assert(sample == &mc->sts_stream.sample);
 
 	if (!decode_frame(&mc->audio, mc)) {
+		NOTICE("???");
 		free(sample->data);
 		sample->length = 0;
 		sample->data = NULL;
@@ -206,7 +207,12 @@ struct movie_context *movie_load(const char *filename)
 {
 	struct movie_context *mc = xcalloc(1, sizeof(struct movie_context));
 	mc->voice = -1;
-	char *path = gamedir_path(filename);
+	char *path = gamedir_path_icase(filename);
+	if (!path) {
+		WARNING("%s: file does not exist", filename);
+		movie_free(mc);
+		return NULL;
+	}
 	int ret;
 	if ((ret = avformat_open_input(&mc->format_ctx, path, NULL, NULL)) != 0) {
 		WARNING("%s: avformat_open_input failed: %d", path, ret);

src/movie_plmpeg.c

@@ -112,7 +112,12 @@ struct movie_context *movie_load(const char *filename)
 {
 	struct movie_context *mc = xcalloc(1, sizeof(struct movie_context));
 	mc->voice = -1;
-	char *path = gamedir_path(filename);
+	char *path = gamedir_path_icase(filename);
+	if (!path) {
+		WARNING("%s: file does not exist", filename);
+		movie_free(mc);
+		return NULL;
+	}
 	FILE *fp = file_open_utf8(path, "rb");
 	if (!fp) {
 		WARNING("%s: %s", path, strerror(errno));

src/util.c

@@ -23,6 +23,7 @@
 #include <ctype.h>
 
 #include "system4.h"
+#include "system4/file.h"
 #include "system4/utfsjis.h"
 
 #include "xsystem4.h"
@@ -146,6 +147,17 @@ char *gamedir_path(const char *path)
 	return resolve_path(config.game_dir, path);
 }
 
+char *gamedir_path_icase(const char *path)
+{
+	char *resolved = resolve_path(config.game_dir, path);
+	if (!file_exists(resolved)) {
+		char *tmp = path_get_icase(resolved);
+		free(resolved);
+		resolved = tmp;
+	}
+	return resolved;
+}
+
 char *savedir_path(const char *path)
 {
 	return resolve_path(config.save_dir, path);