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-rw-r--r--mfx_stub/bitstream.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/mfx_stub/bitstream.h b/mfx_stub/bitstream.h
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+++ b/mfx_stub/bitstream.h
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+/*
+ * Copyright (C) 2024 Mikhail Burakov. This file is part of receiver.
+ *
+ * receiver 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * receiver 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 receiver. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef MFX_STUB_BITSTREAM_H_
+#define MFX_STUB_BITSTREAM_H_
+
+#include <setjmp.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define BitstreamCreate(a, b) \
+ (struct Bitstream) { .data = a, .size = b }
+#define BitstreamReadFailed(x) setjmp((x)->trap)
+
+struct Bitstream {
+ const uint8_t* data;
+ size_t size;
+ size_t offset;
+ size_t epb_count;
+ uint32_t cache;
+ jmp_buf trap;
+};
+
+uint64_t BitstreamReadU(struct Bitstream* bitstream, size_t size);
+uint64_t BitstreamReadUE(struct Bitstream* bitstream);
+int64_t BitstreamReadSE(struct Bitstream* bitstream);
+void BitstreamByteAlign(struct Bitstream* bitstream);
+bool BitstreamReadNalu(struct Bitstream* bitstream, struct Bitstream* output);
+bool BitstreamAvail(const struct Bitstream* bitstream);
+
+#endif // MFX_STUB_BITSTREAM_H_