Add Kamil Nowosads j2k code.

This needs work but it should not rot in soc svn.

1 files changed, 75 insertions, 0 deletions

diff --git a/libavcodec/mqc.h b/libavcodec/mqc.h
new file mode 100644
index 0000000000..b28c13ec48
--- /dev/null
+++ b/libavcodec/mqc.h
@@ -0,0 +1,75 @@
+/*
+ * MQ-coder
+ * Copyright (c) 2007 Kamil Nowosad
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_MQC_H
+#define AVCODEC_MQC_H
+
+/**
+ * MQ-coder
+ * @file
+ * @author Kamil Nowosad
+ */
+
+#include "avcodec.h"
+
+#define MQC_CX_UNI 17
+#define MQC_CX_RL  18
+
+extern uint16_t  ff_mqc_qe[2*47];
+extern uint8_t ff_mqc_nlps[2*47];
+extern uint8_t ff_mqc_nmps[2*47];
+
+typedef struct {
+    uint8_t *bp, *bpstart;
+    unsigned int a;
+    unsigned int c;
+    unsigned int ct;
+    uint8_t cx_states[19];
+} MqcState;
+
+/* encoder */
+
+/** initialize the encoder */
+void ff_mqc_initenc(MqcState *mqc, uint8_t *bp);
+
+/** code bit d with context cx */
+void ff_mqc_encode(MqcState *mqc, uint8_t *cxstate, int d);
+
+/** number of encoded bytes */
+int ff_mqc_length(MqcState *mqc);
+
+/** flush the encoder [returns number of bytes encoded] */
+int ff_mqc_flush(MqcState *mqc);
+
+/* decoder */
+
+/** initialize the decoder */
+void ff_mqc_initdec(MqcState *mqc, uint8_t *bp);
+
+/** returns decoded bit with context cx */
+int ff_mqc_decode(MqcState *mqc, uint8_t *cxstate);
+
+/* common */
+
+/** initialize the contexts */
+void ff_mqc_init_contexts(MqcState *mqc);
+
+#endif /* AVCODEC_MQC_H */