Added mpg123 decoder.

1 files changed, 79 insertions, 0 deletions

diff --git a/decoders/decoder_mpg123.c b/decoders/decoder_mpg123.c
new file mode 100644
index 0000000..4d93f27
--- /dev/null
+++ b/decoders/decoder_mpg123.c
@@ -0,0 +1,79 @@
+#include "decoder.h"
+
+#include <mpg123.h>
+#include <stdio.h>
+
+static gboolean mpg123_decoder_init(gpointer *data) {
+	mpg123_handle *handle;
+
+	int error;
+	mpg123_init();
+
+	handle = mpg123_new("generic", &error);
+	if(error) {
+		g_warning("Error: %s", mpg123_plain_strerror(error));
+		return FALSE;
+	}
+
+	error = mpg123_open_feed(handle);
+	if(error) {
+		g_warning("Error: %s", mpg123_plain_strerror(error));
+	}
+
+	/* force format for now */
+	mpg123_format_none(handle);
+	mpg123_format(handle, 44100, 2, MPG123_ENC_SIGNED_16);
+
+	*data = handle;
+
+	return TRUE;
+}
+
+static gssize mpg123_decoder_decode(gpointer data, const guchar *inbuf,
+		gsize inbuf_size, guchar *outbuf, gsize outbuf_size) {
+	mpg123_handle *handle = data;
+	gssize size;
+	int ret;
+
+	if(mpg123_feed(handle, inbuf, inbuf_size) != MPG123_OK) {
+		g_debug("asdfasdf");
+		g_warning(mpg123_strerror(handle));
+		return -1;
+	}
+
+	ret = mpg123_read(handle, outbuf, outbuf_size, (size_t*)&size);
+
+	if(ret == MPG123_NEW_FORMAT) {
+		long rate;
+		int channels, enc;
+		mpg123_getformat(handle, &rate, &channels, &enc);
+		g_debug("New format: %li Hz, %i channels, encoding value %i", rate, channels, enc);
+		ret = mpg123_read(handle, outbuf, outbuf_size, (size_t*)&size);
+	}
+
+	if(ret != MPG123_OK && ret != MPG123_DONE && ret != MPG123_NEW_FORMAT
+			&& ret != MPG123_NEED_MORE) {
+		g_warning(mpg123_plain_strerror(ret));
+		return -1;
+	}
+
+	return size;
+}
+
+static void mpg123_decoder_close(gpointer data) {
+	mpg123_handle *handle = data;
+	mpg123_close(handle);
+	mpg123_delete(handle);
+}
+
+static const gchar * const decoder_mpg123_extensions[] = {
+	"mp3", NULL,
+};
+
+const struct decoder_plugin decoder_mpg123_decoder = {
+	.name = "mpg123 decoder",
+	.extensions = decoder_mpg123_extensions,
+	.init = mpg123_decoder_init,
+	.decode = mpg123_decoder_decode,
+	.close = mpg123_decoder_close,
+};