examples: add some example player programs

These are intentionally left out of the build system, there's an example
gcc line included in the sources.

1 files changed, 76 insertions, 0 deletions

diff --git a/examples/playit-null.c b/examples/playit-null.c
new file mode 100644
index 0000000..f256e0a
--- /dev/null
+++ b/examples/playit-null.c
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fmt.h"
+#include "sndfile.h"
+
+/*
+ * gcc -O2 -o playit-null playit-null.c -I.. -I../src/include -DHAVE_CONFIG_H -lm -s ../src/libplayit.a
+ */
+
+song_t * song_load_it(const char *file)
+{
+	slurp_t	*s;
+	song_t	*song;
+
+	s = slurp(file, NULL, 0);
+	if (!s) {
+		printf("failed to open \"%s\"\n", file);
+		goto _fail;
+	}
+
+	song = csf_allocate();
+	if (!song) {
+		printf("failed to allocate song\n");
+		goto _fail_slurp;
+	}
+
+	if (fmt_it_load_song(song, s, 0) != LOAD_SUCCESS)
+		goto _fail_song;
+
+	unslurp(s);
+
+	return song;
+
+_fail_song:
+	csf_free(song);
+_fail_slurp:
+	unslurp(s);
+_fail:
+	return NULL;
+}
+
+
+int main(int argc, const char *argv[])
+{
+	song_t	*song;
+	uint8_t	buf[8192];
+	int	len;
+
+	if (argc != 2) {
+		printf("usage: %s song.it\n", argv[0]);
+		goto _fail;
+	}
+
+	song = song_load_it(argv[1]);
+	if (!song) {
+		printf("failed to load song!\n");
+		goto _fail;
+	}
+
+	csf_set_current_order(song, 0);
+	song->repeat_count = 0;
+	song->buffer_count = 0;
+	song->stop_at_order = -1;
+	song->stop_at_row = -1;
+	song->flags &= ~(SONG_PAUSED | SONG_PATTERNLOOP | SONG_ENDREACHED);
+	csf_reset_playmarks(song);
+
+	while ((len = csf_read(song, buf, sizeof(buf))))
+		printf("mixed %i bytes\n", len);
+
+	return EXIT_SUCCESS;
+
+_fail:
+	return EXIT_FAILURE;
+}