1 files changed, 56 insertions, 0 deletions
diff --git a/libavcodec/opusenc.h b/libavcodec/opusenc.h
new file mode 100644
index 0000000000..3273d0a9a2
--- /dev/null
+++ b/libavcodec/opusenc.h
@@ -0,0 +1,56 @@
+/*
+ * Opus encoder
+ * Copyright (c) 2017 Rostislav Pehlivanov <atomnuker@gmail.com>
+ *
+ * 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_OPUSENC_H
+#define AVCODEC_OPUSENC_H
+
+#include "internal.h"
+#include "opus_celt.h"
+
+/* Determines the maximum delay the psychoacoustic system will use for lookahead */
+#define FF_BUFQUEUE_SIZE 145
+#include "libavfilter/bufferqueue.h"
+
+#define OPUS_MAX_LOOKAHEAD ((FF_BUFQUEUE_SIZE - 1)*2.5f)
+
+#define OPUS_MAX_CHANNELS 2
+
+/* 120 ms / 2.5 ms = 48 frames (extremely improbable, but the encoder'll work) */
+#define OPUS_MAX_FRAMES_PER_PACKET 48
+
+#define OPUS_BLOCK_SIZE(x) (2 * 15 * (1 << ((x) + 2)))
+
+#define OPUS_SAMPLES_TO_BLOCK_SIZE(x) (ff_log2((x) / (2 * 15)) - 2)
+
+typedef struct OpusEncOptions {
+    float max_delay_ms;
+} OpusEncOptions;
+
+typedef struct OpusPacketInfo {
+    enum OpusMode mode;
+    enum OpusBandwidth bandwidth;
+    int framesize;
+    int frames;
+} OpusPacketInfo;
+
+void ff_celt_enc_bitalloc(OpusRangeCoder *rc, CeltFrame *f);
+
+#endif /* AVCODEC_OPUSENC_H */