mpg123 decoder plugin, 4/5-channel surround, ac3 pass-through (untested) and minor bugfixes

CVS patchset: 86
CVS date: 2001/05/27 23:48:12

1 files changed, 106 insertions, 0 deletions

diff --git a/src/libmpg123/xine_decoder.c b/src/libmpg123/xine_decoder.c
new file mode 100644
index 000000000..8508dcd24
--- /dev/null
+++ b/src/libmpg123/xine_decoder.c
@@ -0,0 +1,106 @@
+/* 
+ * Copyright (C) 2000-2001 the xine project
+ * 
+ * This file is part of xine, a unix video player.
+ * 
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * xine is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ *
+ * $Id: xine_decoder.c,v 1.1 2001/05/27 23:48:12 guenter Exp $
+ *
+ * stuff needed to turn libmpg123 into a xine decoder plugin
+ */
+
+/*
+ * FIXME: libmpg123 uses global variables (that are written to)
+ */
+
+
+#include <stdlib.h>
+
+#include "audio_out.h"
+#include "mpg123.h"
+#include "mpglib.h"
+#include "buffer.h"
+#include "xine_internal.h"
+
+#define FRAME_SIZE 4096
+
+typedef struct mpgdec_decoder_s {
+  audio_decoder_t  audio_decoder;
+
+  uint32_t         pts;
+
+  mpgaudio_t      *mpg;
+
+  ao_functions_t  *audio_out;
+  int              output_sampling_rate;
+  int              output_open;
+
+} mpgdec_decoder_t;
+
+int mpgdec_can_handle (audio_decoder_t *this_gen, int buf_type) {
+  return ((buf_type & 0xFFFF0000) == BUF_AUDIO_MPEG) ;
+}
+
+
+void mpgdec_init (audio_decoder_t *this_gen, ao_functions_t *audio_out) {
+
+  mpgdec_decoder_t *this = (mpgdec_decoder_t *) this_gen;
+
+  this->audio_out = audio_out;
+  this->mpg       = mpg_audio_init (audio_out);
+}
+
+void mpgdec_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
+
+  mpgdec_decoder_t *this = (mpgdec_decoder_t *) this_gen;
+
+  mpg_audio_decode_data (this->mpg, buf->content, buf->content + buf->size,
+			 buf->PTS);
+}
+
+void mpgdec_close (audio_decoder_t *this_gen) {
+
+  mpgdec_decoder_t *this = (mpgdec_decoder_t *) this_gen; 
+
+  mpg_audio_close (this->mpg);
+
+  if (this->output_open) 
+    this->audio_out->close (this->audio_out);
+}
+
+static char *mpgdec_get_id(void) {
+  return "mpgdec";
+}
+
+audio_decoder_t *init_audio_decoder_plugin (int iface_version, config_values_t *cfg) {
+
+  mpgdec_decoder_t *this ;
+
+  if (iface_version != 1)
+    return NULL;
+
+  this = (mpgdec_decoder_t *) malloc (sizeof (mpgdec_decoder_t));
+
+  this->audio_decoder.interface_version   = 1;
+  this->audio_decoder.can_handle          = mpgdec_can_handle;
+  this->audio_decoder.init                = mpgdec_init;
+  this->audio_decoder.decode_data         = mpgdec_decode_data;
+  this->audio_decoder.close               = mpgdec_close;
+  this->audio_decoder.get_identifier      = mpgdec_get_id;
+  
+  return (audio_decoder_t *) this;
+}
+